diff options
| -rw-r--r-- | common/jpeg/Makefile.am | 18 | ||||
| -rw-r--r-- | common/jpeg/cderror.h | 132 | ||||
| -rw-r--r-- | common/jpeg/cdjpeg.c | 181 | ||||
| -rw-r--r-- | common/jpeg/cdjpeg.h | 184 | ||||
| -rw-r--r-- | common/jpeg/cjpeg.c | 606 | ||||
| -rw-r--r-- | common/jpeg/djpeg.c | 616 | ||||
| -rw-r--r-- | common/jpeg/rdbmp.c | 439 | ||||
| -rw-r--r-- | common/jpeg/rdcolmap.c | 253 | ||||
| -rw-r--r-- | common/jpeg/rdgif.c | 38 | ||||
| -rw-r--r-- | common/jpeg/rdppm.c | 458 | ||||
| -rw-r--r-- | common/jpeg/rdswitch.c | 332 | ||||
| -rw-r--r-- | common/jpeg/rdtarga.c | 500 | ||||
| -rw-r--r-- | common/jpeg/wrbmp.c | 442 | ||||
| -rw-r--r-- | common/jpeg/wrgif.c | 399 | ||||
| -rw-r--r-- | common/jpeg/wrppm.c | 268 | ||||
| -rw-r--r-- | common/jpeg/wrtarga.c | 253 |
16 files changed, 5118 insertions, 1 deletions
diff --git a/common/jpeg/Makefile.am b/common/jpeg/Makefile.am index 5adc1309..57081f7e 100644 --- a/common/jpeg/Makefile.am +++ b/common/jpeg/Makefile.am @@ -22,7 +22,7 @@ endif TSTHDRS = turbojpeg.h rrutil.h rrtimer.h -noinst_PROGRAMS = jpgtest jpegut +noinst_PROGRAMS = jpgtest jpegut cjpeg djpeg jpgtest_SOURCES = $(TSTHDRS) jpgtest.cxx bmp.c turbojpegl.c @@ -31,3 +31,19 @@ jpgtest_LDADD = $(top_srcdir)/libjpeg.la jpegut_SOURCES = $(TSTHDRS) jpegut.c bmp.c turbojpegl.c jpegut_LDADD = $(top_srcdir)/libjpeg.la + +cjpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c cjpeg.c rdbmp.c rdgif.c \ + rdppm.c rdswitch.c rdtarga.c + +cjpeg_LDADD = $(top_srcdir)/libjpeg.la + +cjpeg_CFLAGS = -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED \ + -DTARGA_SUPPORTED + +djpeg_SOURCES = cdjpeg.h cderror.h cdjpeg.c djpeg.c rdcolmap.c rdswitch.c \ + wrbmp.c wrgif.c wrppm.c wrtarga.c + +djpeg_LDADD = $(top_srcdir)/libjpeg.la + +djpeg_CFLAGS = -DBMP_SUPPORTED -DGIF_SUPPORTED -DPPM_SUPPORTED \ + -DTARGA_SUPPORTED diff --git a/common/jpeg/cderror.h b/common/jpeg/cderror.h new file mode 100644 index 00000000..70435e16 --- /dev/null +++ b/common/jpeg/cderror.h @@ -0,0 +1,132 @@ +/* + * cderror.h + * + * Copyright (C) 1994-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file defines the error and message codes for the cjpeg/djpeg + * applications. These strings are not needed as part of the JPEG library + * proper. + * Edit this file to add new codes, or to translate the message strings to + * some other language. + */ + +/* + * To define the enum list of message codes, include this file without + * defining macro JMESSAGE. To create a message string table, include it + * again with a suitable JMESSAGE definition (see jerror.c for an example). + */ +#ifndef JMESSAGE +#ifndef CDERROR_H +#define CDERROR_H +/* First time through, define the enum list */ +#define JMAKE_ENUM_LIST +#else +/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ +#define JMESSAGE(code,string) +#endif /* CDERROR_H */ +#endif /* JMESSAGE */ + +#ifdef JMAKE_ENUM_LIST + +typedef enum { + +#define JMESSAGE(code,string) code , + +#endif /* JMAKE_ENUM_LIST */ + +JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */ + +#ifdef BMP_SUPPORTED +JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format") +JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported") +JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length") +JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1") +JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB") +JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported") +JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM") +JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image") +JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image") +JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image") +JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image") +#endif /* BMP_SUPPORTED */ + +#ifdef GIF_SUPPORTED +JMESSAGE(JERR_GIF_BUG, "GIF output got confused") +JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d") +JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB") +JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file") +JMESSAGE(JERR_GIF_NOT, "Not a GIF file") +JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image") +JMESSAGE(JTRC_GIF_BADVERSION, + "Warning: unexpected GIF version number '%c%c%c'") +JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x") +JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input") +JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file") +JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring") +JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image") +JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits") +#endif /* GIF_SUPPORTED */ + +#ifdef PPM_SUPPORTED +JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB") +JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file") +JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file") +JMESSAGE(JTRC_PGM, "%ux%u PGM image") +JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image") +JMESSAGE(JTRC_PPM, "%ux%u PPM image") +JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image") +#endif /* PPM_SUPPORTED */ + +#ifdef RLE_SUPPORTED +JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library") +JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB") +JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE") +JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file") +JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header") +JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header") +JMESSAGE(JERR_RLE_NOT, "Not an RLE file") +JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE") +JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup") +JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file") +JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d") +JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file") +JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d") +JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d") +#endif /* RLE_SUPPORTED */ + +#ifdef TARGA_SUPPORTED +JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format") +JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file") +JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB") +JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image") +JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image") +JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image") +#else +JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled") +#endif /* TARGA_SUPPORTED */ + +JMESSAGE(JERR_BAD_CMAP_FILE, + "Color map file is invalid or of unsupported format") +JMESSAGE(JERR_TOO_MANY_COLORS, + "Output file format cannot handle %d colormap entries") +JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed") +#ifdef TARGA_SUPPORTED +JMESSAGE(JERR_UNKNOWN_FORMAT, + "Unrecognized input file format --- perhaps you need -targa") +#else +JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format") +#endif +JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format") + +#ifdef JMAKE_ENUM_LIST + + JMSG_LASTADDONCODE +} ADDON_MESSAGE_CODE; + +#undef JMAKE_ENUM_LIST +#endif /* JMAKE_ENUM_LIST */ + +/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ +#undef JMESSAGE diff --git a/common/jpeg/cdjpeg.c b/common/jpeg/cdjpeg.c new file mode 100644 index 00000000..b6250ff9 --- /dev/null +++ b/common/jpeg/cdjpeg.c @@ -0,0 +1,181 @@ +/* + * cdjpeg.c + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains common support routines used by the IJG application + * programs (cjpeg, djpeg, jpegtran). + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ +#include <ctype.h> /* to declare isupper(), tolower() */ +#ifdef NEED_SIGNAL_CATCHER +#include <signal.h> /* to declare signal() */ +#endif +#ifdef USE_SETMODE +#include <fcntl.h> /* to declare setmode()'s parameter macros */ +/* If you have setmode() but not <io.h>, just delete this line: */ +#include <io.h> /* to declare setmode() */ +#endif + + +/* + * Signal catcher to ensure that temporary files are removed before aborting. + * NB: for Amiga Manx C this is actually a global routine named _abort(); + * we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus... + */ + +#ifdef NEED_SIGNAL_CATCHER + +static j_common_ptr sig_cinfo; + +void /* must be global for Manx C */ +signal_catcher (int signum) +{ + if (sig_cinfo != NULL) { + if (sig_cinfo->err != NULL) /* turn off trace output */ + sig_cinfo->err->trace_level = 0; + jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */ + } + exit(EXIT_FAILURE); +} + + +GLOBAL(void) +enable_signal_catcher (j_common_ptr cinfo) +{ + sig_cinfo = cinfo; +#ifdef SIGINT /* not all systems have SIGINT */ + signal(SIGINT, signal_catcher); +#endif +#ifdef SIGTERM /* not all systems have SIGTERM */ + signal(SIGTERM, signal_catcher); +#endif +} + +#endif + + +/* + * Optional progress monitor: display a percent-done figure on stderr. + */ + +#ifdef PROGRESS_REPORT + +METHODDEF(void) +progress_monitor (j_common_ptr cinfo) +{ + cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress; + int total_passes = prog->pub.total_passes + prog->total_extra_passes; + int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit); + + if (percent_done != prog->percent_done) { + prog->percent_done = percent_done; + if (total_passes > 1) { + fprintf(stderr, "\rPass %d/%d: %3d%% ", + prog->pub.completed_passes + prog->completed_extra_passes + 1, + total_passes, percent_done); + } else { + fprintf(stderr, "\r %3d%% ", percent_done); + } + fflush(stderr); + } +} + + +GLOBAL(void) +start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress) +{ + /* Enable progress display, unless trace output is on */ + if (cinfo->err->trace_level == 0) { + progress->pub.progress_monitor = progress_monitor; + progress->completed_extra_passes = 0; + progress->total_extra_passes = 0; + progress->percent_done = -1; + cinfo->progress = &progress->pub; + } +} + + +GLOBAL(void) +end_progress_monitor (j_common_ptr cinfo) +{ + /* Clear away progress display */ + if (cinfo->err->trace_level == 0) { + fprintf(stderr, "\r \r"); + fflush(stderr); + } +} + +#endif + + +/* + * Case-insensitive matching of possibly-abbreviated keyword switches. + * keyword is the constant keyword (must be lower case already), + * minchars is length of minimum legal abbreviation. + */ + +GLOBAL(boolean) +keymatch (char * arg, const char * keyword, int minchars) +{ + register int ca, ck; + register int nmatched = 0; + + while ((ca = *arg++) != '\0') { + if ((ck = *keyword++) == '\0') + return FALSE; /* arg longer than keyword, no good */ + if (isupper(ca)) /* force arg to lcase (assume ck is already) */ + ca = tolower(ca); + if (ca != ck) + return FALSE; /* no good */ + nmatched++; /* count matched characters */ + } + /* reached end of argument; fail if it's too short for unique abbrev */ + if (nmatched < minchars) + return FALSE; + return TRUE; /* A-OK */ +} + + +/* + * Routines to establish binary I/O mode for stdin and stdout. + * Non-Unix systems often require some hacking to get out of text mode. + */ + +GLOBAL(FILE *) +read_stdin (void) +{ + FILE * input_file = stdin; + +#ifdef USE_SETMODE /* need to hack file mode? */ + setmode(fileno(stdin), O_BINARY); +#endif +#ifdef USE_FDOPEN /* need to re-open in binary mode? */ + if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) { + fprintf(stderr, "Cannot reopen stdin\n"); + exit(EXIT_FAILURE); + } +#endif + return input_file; +} + + +GLOBAL(FILE *) +write_stdout (void) +{ + FILE * output_file = stdout; + +#ifdef USE_SETMODE /* need to hack file mode? */ + setmode(fileno(stdout), O_BINARY); +#endif +#ifdef USE_FDOPEN /* need to re-open in binary mode? */ + if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) { + fprintf(stderr, "Cannot reopen stdout\n"); + exit(EXIT_FAILURE); + } +#endif + return output_file; +} diff --git a/common/jpeg/cdjpeg.h b/common/jpeg/cdjpeg.h new file mode 100644 index 00000000..2b387b6e --- /dev/null +++ b/common/jpeg/cdjpeg.h @@ -0,0 +1,184 @@ +/* + * cdjpeg.h + * + * Copyright (C) 1994-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains common declarations for the sample applications + * cjpeg and djpeg. It is NOT used by the core JPEG library. + */ + +#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */ +#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */ +#include "jinclude.h" +#include "jpeglib.h" +#include "jerror.h" /* get library error codes too */ +#include "cderror.h" /* get application-specific error codes */ + + +/* + * Object interface for cjpeg's source file decoding modules + */ + +typedef struct cjpeg_source_struct * cjpeg_source_ptr; + +struct cjpeg_source_struct { + JMETHOD(void, start_input, (j_compress_ptr cinfo, + cjpeg_source_ptr sinfo)); + JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, + cjpeg_source_ptr sinfo)); + JMETHOD(void, finish_input, (j_compress_ptr cinfo, + cjpeg_source_ptr sinfo)); + + FILE *input_file; + + JSAMPARRAY buffer; + JDIMENSION buffer_height; +}; + + +/* + * Object interface for djpeg's output file encoding modules + */ + +typedef struct djpeg_dest_struct * djpeg_dest_ptr; + +struct djpeg_dest_struct { + /* start_output is called after jpeg_start_decompress finishes. + * The color map will be ready at this time, if one is needed. + */ + JMETHOD(void, start_output, (j_decompress_ptr cinfo, + djpeg_dest_ptr dinfo)); + /* Emit the specified number of pixel rows from the buffer. */ + JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo, + djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied)); + /* Finish up at the end of the image. */ + JMETHOD(void, finish_output, (j_decompress_ptr cinfo, + djpeg_dest_ptr dinfo)); + + /* Target file spec; filled in by djpeg.c after object is created. */ + FILE * output_file; + + /* Output pixel-row buffer. Created by module init or start_output. + * Width is cinfo->output_width * cinfo->output_components; + * height is buffer_height. + */ + JSAMPARRAY buffer; + JDIMENSION buffer_height; +}; + + +/* + * cjpeg/djpeg may need to perform extra passes to convert to or from + * the source/destination file format. The JPEG library does not know + * about these passes, but we'd like them to be counted by the progress + * monitor. We use an expanded progress monitor object to hold the + * additional pass count. + */ + +struct cdjpeg_progress_mgr { + struct jpeg_progress_mgr pub; /* fields known to JPEG library */ + int completed_extra_passes; /* extra passes completed */ + int total_extra_passes; /* total extra */ + /* last printed percentage stored here to avoid multiple printouts */ + int percent_done; +}; + +typedef struct cdjpeg_progress_mgr * cd_progress_ptr; + + +/* Short forms of external names for systems with brain-damaged linkers. */ + +#ifdef NEED_SHORT_EXTERNAL_NAMES +#define jinit_read_bmp jIRdBMP +#define jinit_write_bmp jIWrBMP +#define jinit_read_gif jIRdGIF +#define jinit_write_gif jIWrGIF +#define jinit_read_ppm jIRdPPM +#define jinit_write_ppm jIWrPPM +#define jinit_read_rle jIRdRLE +#define jinit_write_rle jIWrRLE +#define jinit_read_targa jIRdTarga +#define jinit_write_targa jIWrTarga +#define read_quant_tables RdQTables +#define read_scan_script RdScnScript +#define set_quant_slots SetQSlots +#define set_sample_factors SetSFacts +#define read_color_map RdCMap +#define enable_signal_catcher EnSigCatcher +#define start_progress_monitor StProgMon +#define end_progress_monitor EnProgMon +#define read_stdin RdStdin +#define write_stdout WrStdout +#endif /* NEED_SHORT_EXTERNAL_NAMES */ + +/* Module selection routines for I/O modules. */ + +EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo)); +EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo, + boolean is_os2)); +EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo)); +EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo)); +EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo)); +EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo)); +EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo)); +EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo)); +EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo)); +EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo)); + +/* cjpeg support routines (in rdswitch.c) */ + +EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename, + int scale_factor, boolean force_baseline)); +EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename)); +EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg)); +EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg)); + +/* djpeg support routines (in rdcolmap.c) */ + +EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile)); + +/* common support routines (in cdjpeg.c) */ + +EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo)); +EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo, + cd_progress_ptr progress)); +EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo)); +EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars)); +EXTERN(FILE *) read_stdin JPP((void)); +EXTERN(FILE *) write_stdout JPP((void)); + +/* miscellaneous useful macros */ + +#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ +#define READ_BINARY "r" +#define WRITE_BINARY "w" +#else +#ifdef VMS /* VMS is very nonstandard */ +#define READ_BINARY "rb", "ctx=stm" +#define WRITE_BINARY "wb", "ctx=stm" +#else /* standard ANSI-compliant case */ +#define READ_BINARY "rb" +#define WRITE_BINARY "wb" +#endif +#endif + +#ifndef EXIT_FAILURE /* define exit() codes if not provided */ +#define EXIT_FAILURE 1 +#endif +#ifndef EXIT_SUCCESS +#ifdef VMS +#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ +#else +#define EXIT_SUCCESS 0 +#endif +#endif +#ifndef EXIT_WARNING +#ifdef VMS +#define EXIT_WARNING 1 /* VMS is very nonstandard */ +#else +#define EXIT_WARNING 2 +#endif +#endif diff --git a/common/jpeg/cjpeg.c b/common/jpeg/cjpeg.c new file mode 100644 index 00000000..f2a929f0 --- /dev/null +++ b/common/jpeg/cjpeg.c @@ -0,0 +1,606 @@ +/* + * cjpeg.c + * + * Copyright (C) 1991-1998, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains a command-line user interface for the JPEG compressor. + * It should work on any system with Unix- or MS-DOS-style command lines. + * + * Two different command line styles are permitted, depending on the + * compile-time switch TWO_FILE_COMMANDLINE: + * cjpeg [options] inputfile outputfile + * cjpeg [options] [inputfile] + * In the second style, output is always to standard output, which you'd + * normally redirect to a file or pipe to some other program. Input is + * either from a named file or from standard input (typically redirected). + * The second style is convenient on Unix but is unhelpful on systems that + * don't support pipes. Also, you MUST use the first style if your system + * doesn't do binary I/O to stdin/stdout. + * To simplify script writing, the "-outfile" switch is provided. The syntax + * cjpeg [options] -outfile outputfile inputfile + * works regardless of which command line style is used. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ +#include "jversion.h" /* for version message */ + +#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ +#ifdef __MWERKS__ +#include <SIOUX.h> /* Metrowerks needs this */ +#include <console.h> /* ... and this */ +#endif +#ifdef THINK_C +#include <console.h> /* Think declares it here */ +#endif +#endif + + +/* Create the add-on message string table. */ + +#define JMESSAGE(code,string) string , + +static const char * const cdjpeg_message_table[] = { +#include "cderror.h" + NULL +}; + + +/* + * This routine determines what format the input file is, + * and selects the appropriate input-reading module. + * + * To determine which family of input formats the file belongs to, + * we may look only at the first byte of the file, since C does not + * guarantee that more than one character can be pushed back with ungetc. + * Looking at additional bytes would require one of these approaches: + * 1) assume we can fseek() the input file (fails for piped input); + * 2) assume we can push back more than one character (works in + * some C implementations, but unportable); + * 3) provide our own buffering (breaks input readers that want to use + * stdio directly, such as the RLE library); + * or 4) don't put back the data, and modify the input_init methods to assume + * they start reading after the start of file (also breaks RLE library). + * #1 is attractive for MS-DOS but is untenable on Unix. + * + * The most portable solution for file types that can't be identified by their + * first byte is to make the user tell us what they are. This is also the + * only approach for "raw" file types that contain only arbitrary values. + * We presently apply this method for Targa files. Most of the time Targa + * files start with 0x00, so we recognize that case. Potentially, however, + * a Targa file could start with any byte value (byte 0 is the length of the + * seldom-used ID field), so we provide a switch to force Targa input mode. + */ + +static boolean is_targa; /* records user -targa switch */ + + +LOCAL(cjpeg_source_ptr) +select_file_type (j_compress_ptr cinfo, FILE * infile) +{ + int c; + + if (is_targa) { +#ifdef TARGA_SUPPORTED + return jinit_read_targa(cinfo); +#else + ERREXIT(cinfo, JERR_TGA_NOTCOMP); +#endif + } + + if ((c = getc(infile)) == EOF) + ERREXIT(cinfo, JERR_INPUT_EMPTY); + if (ungetc(c, infile) == EOF) + ERREXIT(cinfo, JERR_UNGETC_FAILED); + + switch (c) { +#ifdef BMP_SUPPORTED + case 'B': + return jinit_read_bmp(cinfo); +#endif +#ifdef GIF_SUPPORTED + case 'G': + return jinit_read_gif(cinfo); +#endif +#ifdef PPM_SUPPORTED + case 'P': + return jinit_read_ppm(cinfo); +#endif +#ifdef RLE_SUPPORTED + case 'R': + return jinit_read_rle(cinfo); +#endif +#ifdef TARGA_SUPPORTED + case 0x00: + return jinit_read_targa(cinfo); +#endif + default: + ERREXIT(cinfo, JERR_UNKNOWN_FORMAT); + break; + } + + return NULL; /* suppress compiler warnings */ +} + + +/* + * Argument-parsing code. + * The switch parser is designed to be useful with DOS-style command line + * syntax, ie, intermixed switches and file names, where only the switches + * to the left of a given file name affect processing of that file. + * The main program in this file doesn't actually use this capability... + */ + + +static const char * progname; /* program name for error messages */ +static char * outfilename; /* for -outfile switch */ + + +LOCAL(void) +usage (void) +/* complain about bad command line */ +{ + fprintf(stderr, "usage: %s [switches] ", progname); +#ifdef TWO_FILE_COMMANDLINE + fprintf(stderr, "inputfile outputfile\n"); +#else + fprintf(stderr, "[inputfile]\n"); +#endif + + fprintf(stderr, "Switches (names may be abbreviated):\n"); + fprintf(stderr, " -quality N Compression quality (0..100; 5-95 is useful range)\n"); + fprintf(stderr, " -grayscale Create monochrome JPEG file\n"); +#ifdef ENTROPY_OPT_SUPPORTED + fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n"); +#endif +#ifdef C_PROGRESSIVE_SUPPORTED + fprintf(stderr, " -progressive Create progressive JPEG file\n"); +#endif +#ifdef TARGA_SUPPORTED + fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n"); +#endif + fprintf(stderr, "Switches for advanced users:\n"); +#ifdef DCT_ISLOW_SUPPORTED + fprintf(stderr, " -dct int Use integer DCT method%s\n", + (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); +#endif +#ifdef DCT_IFAST_SUPPORTED + fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", + (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); +#endif +#ifdef DCT_FLOAT_SUPPORTED + fprintf(stderr, " -dct float Use floating-point DCT method%s\n", + (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); +#endif + fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n"); +#ifdef INPUT_SMOOTHING_SUPPORTED + fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n"); +#endif + fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); + fprintf(stderr, " -outfile name Specify name for output file\n"); + fprintf(stderr, " -verbose or -debug Emit debug output\n"); + fprintf(stderr, "Switches for wizards:\n"); +#ifdef C_ARITH_CODING_SUPPORTED + fprintf(stderr, " -arithmetic Use arithmetic coding\n"); +#endif + fprintf(stderr, " -baseline Force baseline quantization tables\n"); + fprintf(stderr, " -qtables file Use quantization tables given in file\n"); + fprintf(stderr, " -qslots N[,...] Set component quantization tables\n"); + fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n"); +#ifdef C_MULTISCAN_FILES_SUPPORTED + fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n"); +#endif + exit(EXIT_FAILURE); +} + + +LOCAL(int) +parse_switches (j_compress_ptr cinfo, int argc, char **argv, + int last_file_arg_seen, boolean for_real) +/* Parse optional switches. + * Returns argv[] index of first file-name argument (== argc if none). + * Any file names with indexes <= last_file_arg_seen are ignored; + * they have presumably been processed in a previous iteration. + * (Pass 0 for last_file_arg_seen on the first or only iteration.) + * for_real is FALSE on the first (dummy) pass; we may skip any expensive + * processing. + */ +{ + int argn; + char * arg; + int quality; /* -quality parameter */ + int q_scale_factor; /* scaling percentage for -qtables */ + boolean force_baseline; + boolean simple_progressive; + char * qtablefile = NULL; /* saves -qtables filename if any */ + char * qslotsarg = NULL; /* saves -qslots parm if any */ + char * samplearg = NULL; /* saves -sample parm if any */ + char * scansarg = NULL; /* saves -scans parm if any */ + + /* Set up default JPEG parameters. */ + /* Note that default -quality level need not, and does not, + * match the default scaling for an explicit -qtables argument. + */ + quality = 75; /* default -quality value */ + q_scale_factor = 100; /* default to no scaling for -qtables */ + force_baseline = FALSE; /* by default, allow 16-bit quantizers */ + simple_progressive = FALSE; + is_targa = FALSE; + outfilename = NULL; + cinfo->err->trace_level = 0; + + /* Scan command line options, adjust parameters */ + + for (argn = 1; argn < argc; argn++) { + arg = argv[argn]; + if (*arg != '-') { + /* Not a switch, must be a file name argument */ + if (argn <= last_file_arg_seen) { + outfilename = NULL; /* -outfile applies to just one input file */ + continue; /* ignore this name if previously processed */ + } + break; /* else done parsing switches */ + } + arg++; /* advance past switch marker character */ + + if (keymatch(arg, "arithmetic", 1)) { + /* Use arithmetic coding. */ +#ifdef C_ARITH_CODING_SUPPORTED + cinfo->arith_code = TRUE; +#else + fprintf(stderr, "%s: sorry, arithmetic coding not supported\n", + progname); + exit(EXIT_FAILURE); +#endif + + } else if (keymatch(arg, "baseline", 1)) { + /* Force baseline-compatible output (8-bit quantizer values). */ + force_baseline = TRUE; + + } else if (keymatch(arg, "dct", 2)) { + /* Select DCT algorithm. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (keymatch(argv[argn], "int", 1)) { + cinfo->dct_method = JDCT_ISLOW; + } else if (keymatch(argv[argn], "fast", 2)) { + cinfo->dct_method = JDCT_IFAST; + } else if (keymatch(argv[argn], "float", 2)) { + cinfo->dct_method = JDCT_FLOAT; + } else + usage(); + + } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { + /* Enable debug printouts. */ + /* On first -d, print version identification */ + static boolean printed_version = FALSE; + + if (! printed_version) { + fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n", + JVERSION, JCOPYRIGHT); + printed_version = TRUE; + } + cinfo->err->trace_level++; + + } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { + /* Force a monochrome JPEG file to be generated. */ + jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); + + } else if (keymatch(arg, "maxmemory", 3)) { + /* Maximum memory in Kb (or Mb with 'm'). */ + long lval; + char ch = 'x'; + + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) + usage(); + if (ch == 'm' || ch == 'M') + lval *= 1000L; + cinfo->mem->max_memory_to_use = lval * 1000L; + + } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) { + /* Enable entropy parm optimization. */ +#ifdef ENTROPY_OPT_SUPPORTED + cinfo->optimize_coding = TRUE; +#else + fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n", + progname); + exit(EXIT_FAILURE); +#endif + + } else if (keymatch(arg, "outfile", 4)) { + /* Set output file name. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + outfilename = argv[argn]; /* save it away for later use */ + + } else if (keymatch(arg, "progressive", 1)) { + /* Select simple progressive mode. */ +#ifdef C_PROGRESSIVE_SUPPORTED + simple_progressive = TRUE; + /* We must postpone execution until num_components is known. */ +#else + fprintf(stderr, "%s: sorry, progressive output was not compiled\n", + progname); + exit(EXIT_FAILURE); +#endif + + } else if (keymatch(arg, "quality", 1)) { + /* Quality factor (quantization table scaling factor). */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%d", &quality) != 1) + usage(); + /* Change scale factor in case -qtables is present. */ + q_scale_factor = jpeg_quality_scaling(quality); + + } else if (keymatch(arg, "qslots", 2)) { + /* Quantization table slot numbers. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + qslotsarg = argv[argn]; + /* Must delay setting qslots until after we have processed any + * colorspace-determining switches, since jpeg_set_colorspace sets + * default quant table numbers. + */ + + } else if (keymatch(arg, "qtables", 2)) { + /* Quantization tables fetched from file. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + qtablefile = argv[argn]; + /* We postpone actually reading the file in case -quality comes later. */ + + } else if (keymatch(arg, "restart", 1)) { + /* Restart interval in MCU rows (or in MCUs with 'b'). */ + long lval; + char ch = 'x'; + + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) + usage(); + if (lval < 0 || lval > 65535L) + usage(); + if (ch == 'b' || ch == 'B') { + cinfo->restart_interval = (unsigned int) lval; + cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */ + } else { + cinfo->restart_in_rows = (int) lval; + /* restart_interval will be computed during startup */ + } + + } else if (keymatch(arg, "sample", 2)) { + /* Set sampling factors. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + samplearg = argv[argn]; + /* Must delay setting sample factors until after we have processed any + * colorspace-determining switches, since jpeg_set_colorspace sets + * default sampling factors. + */ + + } else if (keymatch(arg, "scans", 2)) { + /* Set scan script. */ +#ifdef C_MULTISCAN_FILES_SUPPORTED + if (++argn >= argc) /* advance to next argument */ + usage(); + scansarg = argv[argn]; + /* We must postpone reading the file in case -progressive appears. */ +#else + fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n", + progname); + exit(EXIT_FAILURE); +#endif + + } else if (keymatch(arg, "smooth", 2)) { + /* Set input smoothing factor. */ + int val; + + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%d", &val) != 1) + usage(); + if (val < 0 || val > 100) + usage(); + cinfo->smoothing_factor = val; + + } else if (keymatch(arg, "targa", 1)) { + /* Input file is Targa format. */ + is_targa = TRUE; + + } else { + usage(); /* bogus switch */ + } + } + + /* Post-switch-scanning cleanup */ + + if (for_real) { + + /* Set quantization tables for selected quality. */ + /* Some or all may be overridden if -qtables is present. */ + jpeg_set_quality(cinfo, quality, force_baseline); + + if (qtablefile != NULL) /* process -qtables if it was present */ + if (! read_quant_tables(cinfo, qtablefile, + q_scale_factor, force_baseline)) + usage(); + + if (qslotsarg != NULL) /* process -qslots if it was present */ + if (! set_quant_slots(cinfo, qslotsarg)) + usage(); + + if (samplearg != NULL) /* process -sample if it was present */ + if (! set_sample_factors(cinfo, samplearg)) + usage(); + +#ifdef C_PROGRESSIVE_SUPPORTED + if (simple_progressive) /* process -progressive; -scans can override */ + jpeg_simple_progression(cinfo); +#endif + +#ifdef C_MULTISCAN_FILES_SUPPORTED + if (scansarg != NULL) /* process -scans if it was present */ + if (! read_scan_script(cinfo, scansarg)) + usage(); +#endif + } + + return argn; /* return index of next arg (file name) */ +} + + +/* + * The main program. + */ + +int +main (int argc, char **argv) +{ + struct jpeg_compress_struct cinfo; + struct jpeg_error_mgr jerr; +#ifdef PROGRESS_REPORT + struct cdjpeg_progress_mgr progress; +#endif + int file_index; + cjpeg_source_ptr src_mgr; + FILE * input_file; + FILE * output_file; + JDIMENSION num_scanlines; + + /* On Mac, fetch a command line. */ +#ifdef USE_CCOMMAND + argc = ccommand(&argv); +#endif + + progname = argv[0]; + if (progname == NULL || progname[0] == 0) + progname = "cjpeg"; /* in case C library doesn't provide it */ + + /* Initialize the JPEG compression object with default error handling. */ + cinfo.err = jpeg_std_error(&jerr); + jpeg_create_compress(&cinfo); + /* Add some application-specific error messages (from cderror.h) */ + jerr.addon_message_table = cdjpeg_message_table; + jerr.first_addon_message = JMSG_FIRSTADDONCODE; + jerr.last_addon_message = JMSG_LASTADDONCODE; + + /* Now safe to enable signal catcher. */ +#ifdef NEED_SIGNAL_CATCHER + enable_signal_catcher((j_common_ptr) &cinfo); +#endif + + /* Initialize JPEG parameters. + * Much of this may be overridden later. + * In particular, we don't yet know the input file's color space, + * but we need to provide some value for jpeg_set_defaults() to work. + */ + + cinfo.in_color_space = JCS_RGB; /* arbitrary guess */ + jpeg_set_defaults(&cinfo); + + /* Scan command line to find file names. + * It is convenient to use just one switch-parsing routine, but the switch + * values read here are ignored; we will rescan the switches after opening + * the input file. + */ + + file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); + +#ifdef TWO_FILE_COMMANDLINE + /* Must have either -outfile switch or explicit output file name */ + if (outfilename == NULL) { + if (file_index != argc-2) { + fprintf(stderr, "%s: must name one input and one output file\n", + progname); + usage(); + } + outfilename = argv[file_index+1]; + } else { + if (file_index != argc-1) { + fprintf(stderr, "%s: must name one input and one output file\n", + progname); + usage(); + } + } +#else + /* Unix style: expect zero or one file name */ + if (file_index < argc-1) { + fprintf(stderr, "%s: only one input file\n", progname); + usage(); + } +#endif /* TWO_FILE_COMMANDLINE */ + + /* Open the input file. */ + if (file_index < argc) { + if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); + exit(EXIT_FAILURE); + } + } else { + /* default input file is stdin */ + input_file = read_stdin(); + } + + /* Open the output file. */ + if (outfilename != NULL) { + if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, outfilename); + exit(EXIT_FAILURE); + } + } else { + /* default output file is stdout */ + output_file = write_stdout(); + } + +#ifdef PROGRESS_REPORT + start_progress_monitor((j_common_ptr) &cinfo, &progress); +#endif + + /* Figure out the input file format, and set up to read it. */ + src_mgr = select_file_type(&cinfo, input_file); + src_mgr->input_file = input_file; + + /* Read the input file header to obtain file size & colorspace. */ + (*src_mgr->start_input) (&cinfo, src_mgr); + + /* Now that we know input colorspace, fix colorspace-dependent defaults */ + jpeg_default_colorspace(&cinfo); + + /* Adjust default compression parameters by re-parsing the options */ + file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); + + /* Specify data destination for compression */ + jpeg_stdio_dest(&cinfo, output_file); + + /* Start compressor */ + jpeg_start_compress(&cinfo, TRUE); + + /* Process data */ + while (cinfo.next_scanline < cinfo.image_height) { + num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr); + (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines); + } + + /* Finish compression and release memory */ + (*src_mgr->finish_input) (&cinfo, src_mgr); + jpeg_finish_compress(&cinfo); + jpeg_destroy_compress(&cinfo); + + /* Close files, if we opened them */ + if (input_file != stdin) + fclose(input_file); + if (output_file != stdout) + fclose(output_file); + +#ifdef PROGRESS_REPORT + end_progress_monitor((j_common_ptr) &cinfo); +#endif + + /* All done. */ + exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); + return 0; /* suppress no-return-value warnings */ +} diff --git a/common/jpeg/djpeg.c b/common/jpeg/djpeg.c new file mode 100644 index 00000000..e099e90a --- /dev/null +++ b/common/jpeg/djpeg.c @@ -0,0 +1,616 @@ +/* + * djpeg.c + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains a command-line user interface for the JPEG decompressor. + * It should work on any system with Unix- or MS-DOS-style command lines. + * + * Two different command line styles are permitted, depending on the + * compile-time switch TWO_FILE_COMMANDLINE: + * djpeg [options] inputfile outputfile + * djpeg [options] [inputfile] + * In the second style, output is always to standard output, which you'd + * normally redirect to a file or pipe to some other program. Input is + * either from a named file or from standard input (typically redirected). + * The second style is convenient on Unix but is unhelpful on systems that + * don't support pipes. Also, you MUST use the first style if your system + * doesn't do binary I/O to stdin/stdout. + * To simplify script writing, the "-outfile" switch is provided. The syntax + * djpeg [options] -outfile outputfile inputfile + * works regardless of which command line style is used. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ +#include "jversion.h" /* for version message */ + +#include <ctype.h> /* to declare isprint() */ + +#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ +#ifdef __MWERKS__ +#include <SIOUX.h> /* Metrowerks needs this */ +#include <console.h> /* ... and this */ +#endif +#ifdef THINK_C +#include <console.h> /* Think declares it here */ +#endif +#endif + + +/* Create the add-on message string table. */ + +#define JMESSAGE(code,string) string , + +static const char * const cdjpeg_message_table[] = { +#include "cderror.h" + NULL +}; + + +/* + * This list defines the known output image formats + * (not all of which need be supported by a given version). + * You can change the default output format by defining DEFAULT_FMT; + * indeed, you had better do so if you undefine PPM_SUPPORTED. + */ + +typedef enum { + FMT_BMP, /* BMP format (Windows flavor) */ + FMT_GIF, /* GIF format */ + FMT_OS2, /* BMP format (OS/2 flavor) */ + FMT_PPM, /* PPM/PGM (PBMPLUS formats) */ + FMT_RLE, /* RLE format */ + FMT_TARGA, /* Targa format */ + FMT_TIFF /* TIFF format */ +} IMAGE_FORMATS; + +#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */ +#define DEFAULT_FMT FMT_PPM +#endif + +static IMAGE_FORMATS requested_fmt; + + +/* + * Argument-parsing code. + * The switch parser is designed to be useful with DOS-style command line + * syntax, ie, intermixed switches and file names, where only the switches + * to the left of a given file name affect processing of that file. + * The main program in this file doesn't actually use this capability... + */ + + +static const char * progname; /* program name for error messages */ +static char * outfilename; /* for -outfile switch */ + + +LOCAL(void) +usage (void) +/* complain about bad command line */ +{ + fprintf(stderr, "usage: %s [switches] ", progname); +#ifdef TWO_FILE_COMMANDLINE + fprintf(stderr, "inputfile outputfile\n"); +#else + fprintf(stderr, "[inputfile]\n"); +#endif + + fprintf(stderr, "Switches (names may be abbreviated):\n"); + fprintf(stderr, " -colors N Reduce image to no more than N colors\n"); + fprintf(stderr, " -fast Fast, low-quality processing\n"); + fprintf(stderr, " -grayscale Force grayscale output\n"); +#ifdef IDCT_SCALING_SUPPORTED + fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n"); +#endif +#ifdef BMP_SUPPORTED + fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n", + (DEFAULT_FMT == FMT_BMP ? " (default)" : "")); +#endif +#ifdef GIF_SUPPORTED + fprintf(stderr, " -gif Select GIF output format%s\n", + (DEFAULT_FMT == FMT_GIF ? " (default)" : "")); +#endif +#ifdef BMP_SUPPORTED + fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n", + (DEFAULT_FMT == FMT_OS2 ? " (default)" : "")); +#endif +#ifdef PPM_SUPPORTED + fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n", + (DEFAULT_FMT == FMT_PPM ? " (default)" : "")); +#endif +#ifdef RLE_SUPPORTED + fprintf(stderr, " -rle Select Utah RLE output format%s\n", + (DEFAULT_FMT == FMT_RLE ? " (default)" : "")); +#endif +#ifdef TARGA_SUPPORTED + fprintf(stderr, " -targa Select Targa output format%s\n", + (DEFAULT_FMT == FMT_TARGA ? " (default)" : "")); +#endif + fprintf(stderr, "Switches for advanced users:\n"); +#ifdef DCT_ISLOW_SUPPORTED + fprintf(stderr, " -dct int Use integer DCT method%s\n", + (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); +#endif +#ifdef DCT_IFAST_SUPPORTED + fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", + (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); +#endif +#ifdef DCT_FLOAT_SUPPORTED + fprintf(stderr, " -dct float Use floating-point DCT method%s\n", + (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); +#endif + fprintf(stderr, " -dither fs Use F-S dithering (default)\n"); + fprintf(stderr, " -dither none Don't use dithering in quantization\n"); + fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n"); +#ifdef QUANT_2PASS_SUPPORTED + fprintf(stderr, " -map FILE Map to colors used in named image file\n"); +#endif + fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n"); +#ifdef QUANT_1PASS_SUPPORTED + fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n"); +#endif + fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); + fprintf(stderr, " -outfile name Specify name for output file\n"); + fprintf(stderr, " -verbose or -debug Emit debug output\n"); + exit(EXIT_FAILURE); +} + + +LOCAL(int) +parse_switches (j_decompress_ptr cinfo, int argc, char **argv, + int last_file_arg_seen, boolean for_real) +/* Parse optional switches. + * Returns argv[] index of first file-name argument (== argc if none). + * Any file names with indexes <= last_file_arg_seen are ignored; + * they have presumably been processed in a previous iteration. + * (Pass 0 for last_file_arg_seen on the first or only iteration.) + * for_real is FALSE on the first (dummy) pass; we may skip any expensive + * processing. + */ +{ + int argn; + char * arg; + + /* Set up default JPEG parameters. */ + requested_fmt = DEFAULT_FMT; /* set default output file format */ + outfilename = NULL; + cinfo->err->trace_level = 0; + + /* Scan command line options, adjust parameters */ + + for (argn = 1; argn < argc; argn++) { + arg = argv[argn]; + if (*arg != '-') { + /* Not a switch, must be a file name argument */ + if (argn <= last_file_arg_seen) { + outfilename = NULL; /* -outfile applies to just one input file */ + continue; /* ignore this name if previously processed */ + } + break; /* else done parsing switches */ + } + arg++; /* advance past switch marker character */ + + if (keymatch(arg, "bmp", 1)) { + /* BMP output format. */ + requested_fmt = FMT_BMP; + + } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) || + keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) { + /* Do color quantization. */ + int val; + + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%d", &val) != 1) + usage(); + cinfo->desired_number_of_colors = val; + cinfo->quantize_colors = TRUE; + + } else if (keymatch(arg, "dct", 2)) { + /* Select IDCT algorithm. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (keymatch(argv[argn], "int", 1)) { + cinfo->dct_method = JDCT_ISLOW; + } else if (keymatch(argv[argn], "fast", 2)) { + cinfo->dct_method = JDCT_IFAST; + } else if (keymatch(argv[argn], "float", 2)) { + cinfo->dct_method = JDCT_FLOAT; + } else + usage(); + + } else if (keymatch(arg, "dither", 2)) { + /* Select dithering algorithm. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (keymatch(argv[argn], "fs", 2)) { + cinfo->dither_mode = JDITHER_FS; + } else if (keymatch(argv[argn], "none", 2)) { + cinfo->dither_mode = JDITHER_NONE; + } else if (keymatch(argv[argn], "ordered", 2)) { + cinfo->dither_mode = JDITHER_ORDERED; + } else + usage(); + + } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { + /* Enable debug printouts. */ + /* On first -d, print version identification */ + static boolean printed_version = FALSE; + + if (! printed_version) { + fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n", + JVERSION, JCOPYRIGHT); + printed_version = TRUE; + } + cinfo->err->trace_level++; + + } else if (keymatch(arg, "fast", 1)) { + /* Select recommended processing options for quick-and-dirty output. */ + cinfo->two_pass_quantize = FALSE; + cinfo->dither_mode = JDITHER_ORDERED; + if (! cinfo->quantize_colors) /* don't override an earlier -colors */ + cinfo->desired_number_of_colors = 216; + cinfo->dct_method = JDCT_FASTEST; + cinfo->do_fancy_upsampling = FALSE; + + } else if (keymatch(arg, "gif", 1)) { + /* GIF output format. */ + requested_fmt = FMT_GIF; + + } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { + /* Force monochrome output. */ + cinfo->out_color_space = JCS_GRAYSCALE; + + } else if (keymatch(arg, "map", 3)) { + /* Quantize to a color map taken from an input file. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (for_real) { /* too expensive to do twice! */ +#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */ + FILE * mapfile; + + if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); + exit(EXIT_FAILURE); + } + read_color_map(cinfo, mapfile); + fclose(mapfile); + cinfo->quantize_colors = TRUE; +#else + ERREXIT(cinfo, JERR_NOT_COMPILED); +#endif + } + + } else if (keymatch(arg, "maxmemory", 3)) { + /* Maximum memory in Kb (or Mb with 'm'). */ + long lval; + char ch = 'x'; + + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) + usage(); + if (ch == 'm' || ch == 'M') + lval *= 1000L; + cinfo->mem->max_memory_to_use = lval * 1000L; + + } else if (keymatch(arg, "nosmooth", 3)) { + /* Suppress fancy upsampling */ + cinfo->do_fancy_upsampling = FALSE; + + } else if (keymatch(arg, "onepass", 3)) { + /* Use fast one-pass quantization. */ + cinfo->two_pass_quantize = FALSE; + + } else if (keymatch(arg, "os2", 3)) { + /* BMP output format (OS/2 flavor). */ + requested_fmt = FMT_OS2; + + } else if (keymatch(arg, "outfile", 4)) { + /* Set output file name. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + outfilename = argv[argn]; /* save it away for later use */ + + } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) { + /* PPM/PGM output format. */ + requested_fmt = FMT_PPM; + + } else if (keymatch(arg, "rle", 1)) { + /* RLE output format. */ + requested_fmt = FMT_RLE; + + } else if (keymatch(arg, "scale", 1)) { + /* Scale the output image by a fraction M/N. */ + if (++argn >= argc) /* advance to next argument */ + usage(); + if (sscanf(argv[argn], "%d/%d", + &cinfo->scale_num, &cinfo->scale_denom) != 2) + usage(); + + } else if (keymatch(arg, "targa", 1)) { + /* Targa output format. */ + requested_fmt = FMT_TARGA; + + } else { + usage(); /* bogus switch */ + } + } + + return argn; /* return index of next arg (file name) */ +} + + +/* + * Marker processor for COM and interesting APPn markers. + * This replaces the library's built-in processor, which just skips the marker. + * We want to print out the marker as text, to the extent possible. + * Note this code relies on a non-suspending data source. + */ + +LOCAL(unsigned int) +jpeg_getc (j_decompress_ptr cinfo) +/* Read next byte */ +{ + struct jpeg_source_mgr * datasrc = cinfo->src; + + if (datasrc->bytes_in_buffer == 0) { + if (! (*datasrc->fill_input_buffer) (cinfo)) + ERREXIT(cinfo, JERR_CANT_SUSPEND); + } + datasrc->bytes_in_buffer--; + return GETJOCTET(*datasrc->next_input_byte++); +} + + +METHODDEF(boolean) +print_text_marker (j_decompress_ptr cinfo) +{ + boolean traceit = (cinfo->err->trace_level >= 1); + INT32 length; + unsigned int ch; + unsigned int lastch = 0; + + length = jpeg_getc(cinfo) << 8; + length += jpeg_getc(cinfo); + length -= 2; /* discount the length word itself */ + + if (traceit) { + if (cinfo->unread_marker == JPEG_COM) + fprintf(stderr, "Comment, length %ld:\n", (long) length); + else /* assume it is an APPn otherwise */ + fprintf(stderr, "APP%d, length %ld:\n", + cinfo->unread_marker - JPEG_APP0, (long) length); + } + + while (--length >= 0) { + ch = jpeg_getc(cinfo); + if (traceit) { + /* Emit the character in a readable form. + * Nonprintables are converted to \nnn form, + * while \ is converted to \\. + * Newlines in CR, CR/LF, or LF form will be printed as one newline. + */ + if (ch == '\r') { + fprintf(stderr, "\n"); + } else if (ch == '\n') { + if (lastch != '\r') + fprintf(stderr, "\n"); + } else if (ch == '\\') { + fprintf(stderr, "\\\\"); + } else if (isprint(ch)) { + putc(ch, stderr); + } else { + fprintf(stderr, "\\%03o", ch); + } + lastch = ch; + } + } + + if (traceit) + fprintf(stderr, "\n"); + + return TRUE; +} + + +/* + * The main program. + */ + +int +main (int argc, char **argv) +{ + struct jpeg_decompress_struct cinfo; + struct jpeg_error_mgr jerr; +#ifdef PROGRESS_REPORT + struct cdjpeg_progress_mgr progress; +#endif + int file_index; + djpeg_dest_ptr dest_mgr = NULL; + FILE * input_file; + FILE * output_file; + JDIMENSION num_scanlines; + + /* On Mac, fetch a command line. */ +#ifdef USE_CCOMMAND + argc = ccommand(&argv); +#endif + + progname = argv[0]; + if (progname == NULL || progname[0] == 0) + progname = "djpeg"; /* in case C library doesn't provide it */ + + /* Initialize the JPEG decompression object with default error handling. */ + cinfo.err = jpeg_std_error(&jerr); + jpeg_create_decompress(&cinfo); + /* Add some application-specific error messages (from cderror.h) */ + jerr.addon_message_table = cdjpeg_message_table; + jerr.first_addon_message = JMSG_FIRSTADDONCODE; + jerr.last_addon_message = JMSG_LASTADDONCODE; + + /* Insert custom marker processor for COM and APP12. + * APP12 is used by some digital camera makers for textual info, + * so we provide the ability to display it as text. + * If you like, additional APPn marker types can be selected for display, + * but don't try to override APP0 or APP14 this way (see libjpeg.doc). + */ + jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker); + jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker); + + /* Now safe to enable signal catcher. */ +#ifdef NEED_SIGNAL_CATCHER + enable_signal_catcher((j_common_ptr) &cinfo); +#endif + + /* Scan command line to find file names. */ + /* It is convenient to use just one switch-parsing routine, but the switch + * values read here are ignored; we will rescan the switches after opening + * the input file. + * (Exception: tracing level set here controls verbosity for COM markers + * found during jpeg_read_header...) + */ + + file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); + +#ifdef TWO_FILE_COMMANDLINE + /* Must have either -outfile switch or explicit output file name */ + if (outfilename == NULL) { + if (file_index != argc-2) { + fprintf(stderr, "%s: must name one input and one output file\n", + progname); + usage(); + } + outfilename = argv[file_index+1]; + } else { + if (file_index != argc-1) { + fprintf(stderr, "%s: must name one input and one output file\n", + progname); + usage(); + } + } +#else + /* Unix style: expect zero or one file name */ + if (file_index < argc-1) { + fprintf(stderr, "%s: only one input file\n", progname); + usage(); + } +#endif /* TWO_FILE_COMMANDLINE */ + + /* Open the input file. */ + if (file_index < argc) { + if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); + exit(EXIT_FAILURE); + } + } else { + /* default input file is stdin */ + input_file = read_stdin(); + } + + /* Open the output file. */ + if (outfilename != NULL) { + if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { + fprintf(stderr, "%s: can't open %s\n", progname, outfilename); + exit(EXIT_FAILURE); + } + } else { + /* default output file is stdout */ + output_file = write_stdout(); + } + +#ifdef PROGRESS_REPORT + start_progress_monitor((j_common_ptr) &cinfo, &progress); +#endif + + /* Specify data source for decompression */ + jpeg_stdio_src(&cinfo, input_file); + + /* Read file header, set default decompression parameters */ + (void) jpeg_read_header(&cinfo, TRUE); + + /* Adjust default decompression parameters by re-parsing the options */ + file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); + + /* Initialize the output module now to let it override any crucial + * option settings (for instance, GIF wants to force color quantization). + */ + switch (requested_fmt) { +#ifdef BMP_SUPPORTED + case FMT_BMP: + dest_mgr = jinit_write_bmp(&cinfo, FALSE); + break; + case FMT_OS2: + dest_mgr = jinit_write_bmp(&cinfo, TRUE); + break; +#endif +#ifdef GIF_SUPPORTED + case FMT_GIF: + dest_mgr = jinit_write_gif(&cinfo); + break; +#endif +#ifdef PPM_SUPPORTED + case FMT_PPM: + dest_mgr = jinit_write_ppm(&cinfo); + break; +#endif +#ifdef RLE_SUPPORTED + case FMT_RLE: + dest_mgr = jinit_write_rle(&cinfo); + break; +#endif +#ifdef TARGA_SUPPORTED + case FMT_TARGA: + dest_mgr = jinit_write_targa(&cinfo); + break; +#endif + default: + ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT); + break; + } + dest_mgr->output_file = output_file; + + /* Start decompressor */ + (void) jpeg_start_decompress(&cinfo); + + /* Write output file header */ + (*dest_mgr->start_output) (&cinfo, dest_mgr); + + /* Process data */ + while (cinfo.output_scanline < cinfo.output_height) { + num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer, + dest_mgr->buffer_height); + (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines); + } + +#ifdef PROGRESS_REPORT + /* Hack: count final pass as done in case finish_output does an extra pass. + * The library won't have updated completed_passes. + */ + progress.pub.completed_passes = progress.pub.total_passes; +#endif + + /* Finish decompression and release memory. + * I must do it in this order because output module has allocated memory + * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory. + */ + (*dest_mgr->finish_output) (&cinfo, dest_mgr); + (void) jpeg_finish_decompress(&cinfo); + jpeg_destroy_decompress(&cinfo); + + /* Close files, if we opened them */ + if (input_file != stdin) + fclose(input_file); + if (output_file != stdout) + fclose(output_file); + +#ifdef PROGRESS_REPORT + end_progress_monitor((j_common_ptr) &cinfo); +#endif + + /* All done. */ + exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); + return 0; /* suppress no-return-value warnings */ +} diff --git a/common/jpeg/rdbmp.c b/common/jpeg/rdbmp.c new file mode 100644 index 00000000..b05fe2ac --- /dev/null +++ b/common/jpeg/rdbmp.c @@ -0,0 +1,439 @@ +/* + * rdbmp.c + * + * Copyright (C) 1994-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to read input images in Microsoft "BMP" + * format (MS Windows 3.x, OS/2 1.x, and OS/2 2.x flavors). + * Currently, only 8-bit and 24-bit images are supported, not 1-bit or + * 4-bit (feeding such low-depth images into JPEG would be silly anyway). + * Also, we don't support RLE-compressed files. + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume input from + * an ordinary stdio stream. They further assume that reading begins + * at the start of the file; start_input may need work if the + * user interface has already read some data (e.g., to determine that + * the file is indeed BMP format). + * + * This code contributed by James Arthur Boucher. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef BMP_SUPPORTED + + +/* Macros to deal with unsigned chars as efficiently as compiler allows */ + +#ifdef HAVE_UNSIGNED_CHAR +typedef unsigned char U_CHAR; +#define UCH(x) ((int) (x)) +#else /* !HAVE_UNSIGNED_CHAR */ +#ifdef CHAR_IS_UNSIGNED +typedef char U_CHAR; +#define UCH(x) ((int) (x)) +#else +typedef char U_CHAR; +#define UCH(x) ((int) (x) & 0xFF) +#endif +#endif /* HAVE_UNSIGNED_CHAR */ + + +#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) + + +/* Private version of data source object */ + +typedef struct _bmp_source_struct * bmp_source_ptr; + +typedef struct _bmp_source_struct { + struct cjpeg_source_struct pub; /* public fields */ + + j_compress_ptr cinfo; /* back link saves passing separate parm */ + + JSAMPARRAY colormap; /* BMP colormap (converted to my format) */ + + jvirt_sarray_ptr whole_image; /* Needed to reverse row order */ + JDIMENSION source_row; /* Current source row number */ + JDIMENSION row_width; /* Physical width of scanlines in file */ + + int bits_per_pixel; /* remembers 8- or 24-bit format */ +} bmp_source_struct; + + +LOCAL(int) +read_byte (bmp_source_ptr sinfo) +/* Read next byte from BMP file */ +{ + register FILE *infile = sinfo->pub.input_file; + register int c; + + if ((c = getc(infile)) == EOF) + ERREXIT(sinfo->cinfo, JERR_INPUT_EOF); + return c; +} + + +LOCAL(void) +read_colormap (bmp_source_ptr sinfo, int cmaplen, int mapentrysize) +/* Read the colormap from a BMP file */ +{ + int i; + + switch (mapentrysize) { + case 3: + /* BGR format (occurs in OS/2 files) */ + for (i = 0; i < cmaplen; i++) { + sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); + } + break; + case 4: + /* BGR0 format (occurs in MS Windows files) */ + for (i = 0; i < cmaplen; i++) { + sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); + (void) read_byte(sinfo); + } + break; + default: + ERREXIT(sinfo->cinfo, JERR_BMP_BADCMAP); + break; + } +} + + +/* + * Read one row of pixels. + * The image has been read into the whole_image array, but is otherwise + * unprocessed. We must read it out in top-to-bottom row order, and if + * it is an 8-bit image, we must expand colormapped pixels to 24bit format. + */ + +METHODDEF(JDIMENSION) +get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 8-bit colormap indexes */ +{ + bmp_source_ptr source = (bmp_source_ptr) sinfo; + register JSAMPARRAY colormap = source->colormap; + JSAMPARRAY image_ptr; + register int t; + register JSAMPROW inptr, outptr; + register JDIMENSION col; + + /* Fetch next row from virtual array */ + source->source_row--; + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, source->whole_image, + source->source_row, (JDIMENSION) 1, FALSE); + + /* Expand the colormap indexes to real data */ + inptr = image_ptr[0]; + outptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + t = GETJSAMPLE(*inptr++); + *outptr++ = colormap[0][t]; /* can omit GETJSAMPLE() safely */ + *outptr++ = colormap[1][t]; + *outptr++ = colormap[2][t]; + } + + return 1; +} + + +METHODDEF(JDIMENSION) +get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 24-bit pixels */ +{ + bmp_source_ptr source = (bmp_source_ptr) sinfo; + JSAMPARRAY image_ptr; + register JSAMPROW inptr, outptr; + register JDIMENSION col; + + /* Fetch next row from virtual array */ + source->source_row--; + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, source->whole_image, + source->source_row, (JDIMENSION) 1, FALSE); + + /* Transfer data. Note source values are in BGR order + * (even though Microsoft's own documents say the opposite). + */ + inptr = image_ptr[0]; + outptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ + outptr[1] = *inptr++; + outptr[0] = *inptr++; + outptr += 3; + } + + return 1; +} + + +/* + * This method loads the image into whole_image during the first call on + * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call + * get_8bit_row or get_24bit_row on subsequent calls. + */ + +METHODDEF(JDIMENSION) +preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + bmp_source_ptr source = (bmp_source_ptr) sinfo; + register FILE *infile = source->pub.input_file; + register int c; + register JSAMPROW out_ptr; + JSAMPARRAY image_ptr; + JDIMENSION row, col; + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + + /* Read the data into a virtual array in input-file row order. */ + for (row = 0; row < cinfo->image_height; row++) { + if (progress != NULL) { + progress->pub.pass_counter = (long) row; + progress->pub.pass_limit = (long) cinfo->image_height; + (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); + } + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, source->whole_image, + row, (JDIMENSION) 1, TRUE); + out_ptr = image_ptr[0]; + for (col = source->row_width; col > 0; col--) { + /* inline copy of read_byte() for speed */ + if ((c = getc(infile)) == EOF) + ERREXIT(cinfo, JERR_INPUT_EOF); + *out_ptr++ = (JSAMPLE) c; + } + } + if (progress != NULL) + progress->completed_extra_passes++; + + /* Set up to read from the virtual array in top-to-bottom order */ + switch (source->bits_per_pixel) { + case 8: + source->pub.get_pixel_rows = get_8bit_row; + break; + case 24: + source->pub.get_pixel_rows = get_24bit_row; + break; + default: + ERREXIT(cinfo, JERR_BMP_BADDEPTH); + } + source->source_row = cinfo->image_height; + + /* And read the first row */ + return (*source->pub.get_pixel_rows) (cinfo, sinfo); +} + + +/* + * Read the file header; return image size and component count. + */ + +METHODDEF(void) +start_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + bmp_source_ptr source = (bmp_source_ptr) sinfo; + U_CHAR bmpfileheader[14]; + U_CHAR bmpinfoheader[64]; +#define GET_2B(array,offset) ((unsigned int) UCH(array[offset]) + \ + (((unsigned int) UCH(array[offset+1])) << 8)) +#define GET_4B(array,offset) ((INT32) UCH(array[offset]) + \ + (((INT32) UCH(array[offset+1])) << 8) + \ + (((INT32) UCH(array[offset+2])) << 16) + \ + (((INT32) UCH(array[offset+3])) << 24)) + INT32 bfOffBits; + INT32 headerSize; + INT32 biWidth = 0; /* initialize to avoid compiler warning */ + INT32 biHeight = 0; + unsigned int biPlanes; + INT32 biCompression; + INT32 biXPelsPerMeter,biYPelsPerMeter; + INT32 biClrUsed = 0; + int mapentrysize = 0; /* 0 indicates no colormap */ + INT32 bPad; + JDIMENSION row_width; + + /* Read and verify the bitmap file header */ + if (! ReadOK(source->pub.input_file, bmpfileheader, 14)) + ERREXIT(cinfo, JERR_INPUT_EOF); + if (GET_2B(bmpfileheader,0) != 0x4D42) /* 'BM' */ + ERREXIT(cinfo, JERR_BMP_NOT); + bfOffBits = (INT32) GET_4B(bmpfileheader,10); + /* We ignore the remaining fileheader fields */ + + /* The infoheader might be 12 bytes (OS/2 1.x), 40 bytes (Windows), + * or 64 bytes (OS/2 2.x). Check the first 4 bytes to find out which. + */ + if (! ReadOK(source->pub.input_file, bmpinfoheader, 4)) + ERREXIT(cinfo, JERR_INPUT_EOF); + headerSize = (INT32) GET_4B(bmpinfoheader,0); + if (headerSize < 12 || headerSize > 64) + ERREXIT(cinfo, JERR_BMP_BADHEADER); + if (! ReadOK(source->pub.input_file, bmpinfoheader+4, headerSize-4)) + ERREXIT(cinfo, JERR_INPUT_EOF); + + switch ((int) headerSize) { + case 12: + /* Decode OS/2 1.x header (Microsoft calls this a BITMAPCOREHEADER) */ + biWidth = (INT32) GET_2B(bmpinfoheader,4); + biHeight = (INT32) GET_2B(bmpinfoheader,6); + biPlanes = GET_2B(bmpinfoheader,8); + source->bits_per_pixel = (int) GET_2B(bmpinfoheader,10); + + switch (source->bits_per_pixel) { + case 8: /* colormapped image */ + mapentrysize = 3; /* OS/2 uses RGBTRIPLE colormap */ + TRACEMS2(cinfo, 1, JTRC_BMP_OS2_MAPPED, (int) biWidth, (int) biHeight); + break; + case 24: /* RGB image */ + TRACEMS2(cinfo, 1, JTRC_BMP_OS2, (int) biWidth, (int) biHeight); + break; + default: + ERREXIT(cinfo, JERR_BMP_BADDEPTH); + break; + } + if (biPlanes != 1) + ERREXIT(cinfo, JERR_BMP_BADPLANES); + break; + case 40: + case 64: + /* Decode Windows 3.x header (Microsoft calls this a BITMAPINFOHEADER) */ + /* or OS/2 2.x header, which has additional fields that we ignore */ + biWidth = GET_4B(bmpinfoheader,4); + biHeight = GET_4B(bmpinfoheader,8); + biPlanes = GET_2B(bmpinfoheader,12); + source->bits_per_pixel = (int) GET_2B(bmpinfoheader,14); + biCompression = GET_4B(bmpinfoheader,16); + biXPelsPerMeter = GET_4B(bmpinfoheader,24); + biYPelsPerMeter = GET_4B(bmpinfoheader,28); + biClrUsed = GET_4B(bmpinfoheader,32); + /* biSizeImage, biClrImportant fields are ignored */ + + switch (source->bits_per_pixel) { + case 8: /* colormapped image */ + mapentrysize = 4; /* Windows uses RGBQUAD colormap */ + TRACEMS2(cinfo, 1, JTRC_BMP_MAPPED, (int) biWidth, (int) biHeight); + break; + case 24: /* RGB image */ + TRACEMS2(cinfo, 1, JTRC_BMP, (int) biWidth, (int) biHeight); + break; + default: + ERREXIT(cinfo, JERR_BMP_BADDEPTH); + break; + } + if (biPlanes != 1) + ERREXIT(cinfo, JERR_BMP_BADPLANES); + if (biCompression != 0) + ERREXIT(cinfo, JERR_BMP_COMPRESSED); + + if (biXPelsPerMeter > 0 && biYPelsPerMeter > 0) { + /* Set JFIF density parameters from the BMP data */ + cinfo->X_density = (UINT16) (biXPelsPerMeter/100); /* 100 cm per meter */ + cinfo->Y_density = (UINT16) (biYPelsPerMeter/100); + cinfo->density_unit = 2; /* dots/cm */ + } + break; + default: + ERREXIT(cinfo, JERR_BMP_BADHEADER); + break; + } + + /* Compute distance to bitmap data --- will adjust for colormap below */ + bPad = bfOffBits - (headerSize + 14); + + /* Read the colormap, if any */ + if (mapentrysize > 0) { + if (biClrUsed <= 0) + biClrUsed = 256; /* assume it's 256 */ + else if (biClrUsed > 256) + ERREXIT(cinfo, JERR_BMP_BADCMAP); + /* Allocate space to store the colormap */ + source->colormap = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + (JDIMENSION) biClrUsed, (JDIMENSION) 3); + /* and read it from the file */ + read_colormap(source, (int) biClrUsed, mapentrysize); + /* account for size of colormap */ + bPad -= biClrUsed * mapentrysize; + } + + /* Skip any remaining pad bytes */ + if (bPad < 0) /* incorrect bfOffBits value? */ + ERREXIT(cinfo, JERR_BMP_BADHEADER); + while (--bPad >= 0) { + (void) read_byte(source); + } + + /* Compute row width in file, including padding to 4-byte boundary */ + if (source->bits_per_pixel == 24) + row_width = (JDIMENSION) (biWidth * 3); + else + row_width = (JDIMENSION) biWidth; + while ((row_width & 3) != 0) row_width++; + source->row_width = row_width; + + /* Allocate space for inversion array, prepare for preload pass */ + source->whole_image = (*cinfo->mem->request_virt_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, + row_width, (JDIMENSION) biHeight, (JDIMENSION) 1); + source->pub.get_pixel_rows = preload_image; + if (cinfo->progress != NULL) { + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + progress->total_extra_passes++; /* count file input as separate pass */ + } + + /* Allocate one-row buffer for returned data */ + source->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + (JDIMENSION) (biWidth * 3), (JDIMENSION) 1); + source->pub.buffer_height = 1; + + cinfo->in_color_space = JCS_RGB; + cinfo->input_components = 3; + cinfo->data_precision = 8; + cinfo->image_width = (JDIMENSION) biWidth; + cinfo->image_height = (JDIMENSION) biHeight; +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + /* no work */ +} + + +/* + * The module selection routine for BMP format input. + */ + +GLOBAL(cjpeg_source_ptr) +jinit_read_bmp (j_compress_ptr cinfo) +{ + bmp_source_ptr source; + + /* Create module interface object */ + source = (bmp_source_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(bmp_source_struct)); + source->cinfo = cinfo; /* make back link for subroutines */ + /* Fill in method ptrs, except get_pixel_rows which start_input sets */ + source->pub.start_input = start_input_bmp; + source->pub.finish_input = finish_input_bmp; + + return (cjpeg_source_ptr) source; +} + +#endif /* BMP_SUPPORTED */ diff --git a/common/jpeg/rdcolmap.c b/common/jpeg/rdcolmap.c new file mode 100644 index 00000000..42b34376 --- /dev/null +++ b/common/jpeg/rdcolmap.c @@ -0,0 +1,253 @@ +/* + * rdcolmap.c + * + * Copyright (C) 1994-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file implements djpeg's "-map file" switch. It reads a source image + * and constructs a colormap to be supplied to the JPEG decompressor. + * + * Currently, these file formats are supported for the map file: + * GIF: the contents of the GIF's global colormap are used. + * PPM (either text or raw flavor): the entire file is read and + * each unique pixel value is entered in the map. + * Note that reading a large PPM file will be horrendously slow. + * Typically, a PPM-format map file should contain just one pixel + * of each desired color. Such a file can be extracted from an + * ordinary image PPM file with ppmtomap(1). + * + * Rescaling a PPM that has a maxval unequal to MAXJSAMPLE is not + * currently implemented. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */ + +/* Portions of this code are based on the PBMPLUS library, which is: +** +** Copyright (C) 1988 by Jef Poskanzer. +** +** Permission to use, copy, modify, and distribute this software and its +** documentation for any purpose and without fee is hereby granted, provided +** that the above copyright notice appear in all copies and that both that +** copyright notice and this permission notice appear in supporting +** documentation. This software is provided "as is" without express or +** implied warranty. +*/ + + +/* + * Add a (potentially) new color to the color map. + */ + +LOCAL(void) +add_map_entry (j_decompress_ptr cinfo, int R, int G, int B) +{ + JSAMPROW colormap0 = cinfo->colormap[0]; + JSAMPROW colormap1 = cinfo->colormap[1]; + JSAMPROW colormap2 = cinfo->colormap[2]; + int ncolors = cinfo->actual_number_of_colors; + int index; + + /* Check for duplicate color. */ + for (index = 0; index < ncolors; index++) { + if (GETJSAMPLE(colormap0[index]) == R && + GETJSAMPLE(colormap1[index]) == G && + GETJSAMPLE(colormap2[index]) == B) + return; /* color is already in map */ + } + + /* Check for map overflow. */ + if (ncolors >= (MAXJSAMPLE+1)) + ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, (MAXJSAMPLE+1)); + + /* OK, add color to map. */ + colormap0[ncolors] = (JSAMPLE) R; + colormap1[ncolors] = (JSAMPLE) G; + colormap2[ncolors] = (JSAMPLE) B; + cinfo->actual_number_of_colors++; +} + + +/* + * Extract color map from a GIF file. + */ + +LOCAL(void) +read_gif_map (j_decompress_ptr cinfo, FILE * infile) +{ + int header[13]; + int i, colormaplen; + int R, G, B; + + /* Initial 'G' has already been read by read_color_map */ + /* Read the rest of the GIF header and logical screen descriptor */ + for (i = 1; i < 13; i++) { + if ((header[i] = getc(infile)) == EOF) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + } + + /* Verify GIF Header */ + if (header[1] != 'I' || header[2] != 'F') + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + + /* There must be a global color map. */ + if ((header[10] & 0x80) == 0) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + + /* OK, fetch it. */ + colormaplen = 2 << (header[10] & 0x07); + + for (i = 0; i < colormaplen; i++) { + R = getc(infile); + G = getc(infile); + B = getc(infile); + if (R == EOF || G == EOF || B == EOF) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + add_map_entry(cinfo, + R << (BITS_IN_JSAMPLE-8), + G << (BITS_IN_JSAMPLE-8), + B << (BITS_IN_JSAMPLE-8)); + } +} + + +/* Support routines for reading PPM */ + + +LOCAL(int) +pbm_getc (FILE * infile) +/* Read next char, skipping over any comments */ +/* A comment/newline sequence is returned as a newline */ +{ + register int ch; + + ch = getc(infile); + if (ch == '#') { + do { + ch = getc(infile); + } while (ch != '\n' && ch != EOF); + } + return ch; +} + + +LOCAL(unsigned int) +read_pbm_integer (j_decompress_ptr cinfo, FILE * infile) +/* Read an unsigned decimal integer from the PPM file */ +/* Swallows one trailing character after the integer */ +/* Note that on a 16-bit-int machine, only values up to 64k can be read. */ +/* This should not be a problem in practice. */ +{ + register int ch; + register unsigned int val; + + /* Skip any leading whitespace */ + do { + ch = pbm_getc(infile); + if (ch == EOF) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'); + + if (ch < '0' || ch > '9') + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + + val = ch - '0'; + while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') { + val *= 10; + val += ch - '0'; + } + return val; +} + + +/* + * Extract color map from a PPM file. + */ + +LOCAL(void) +read_ppm_map (j_decompress_ptr cinfo, FILE * infile) +{ + int c; + unsigned int w, h, maxval, row, col; + int R, G, B; + + /* Initial 'P' has already been read by read_color_map */ + c = getc(infile); /* save format discriminator for a sec */ + + /* while we fetch the remaining header info */ + w = read_pbm_integer(cinfo, infile); + h = read_pbm_integer(cinfo, infile); + maxval = read_pbm_integer(cinfo, infile); + + if (w <= 0 || h <= 0 || maxval <= 0) /* error check */ + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + + /* For now, we don't support rescaling from an unusual maxval. */ + if (maxval != (unsigned int) MAXJSAMPLE) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + + switch (c) { + case '3': /* it's a text-format PPM file */ + for (row = 0; row < h; row++) { + for (col = 0; col < w; col++) { + R = read_pbm_integer(cinfo, infile); + G = read_pbm_integer(cinfo, infile); + B = read_pbm_integer(cinfo, infile); + add_map_entry(cinfo, R, G, B); + } + } + break; + + case '6': /* it's a raw-format PPM file */ + for (row = 0; row < h; row++) { + for (col = 0; col < w; col++) { + R = getc(infile); + G = getc(infile); + B = getc(infile); + if (R == EOF || G == EOF || B == EOF) + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + add_map_entry(cinfo, R, G, B); + } + } + break; + + default: + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + break; + } +} + + +/* + * Main entry point from djpeg.c. + * Input: opened input file (from file name argument on command line). + * Output: colormap and actual_number_of_colors fields are set in cinfo. + */ + +GLOBAL(void) +read_color_map (j_decompress_ptr cinfo, FILE * infile) +{ + /* Allocate space for a color map of maximum supported size. */ + cinfo->colormap = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + (JDIMENSION) (MAXJSAMPLE+1), (JDIMENSION) 3); + cinfo->actual_number_of_colors = 0; /* initialize map to empty */ + + /* Read first byte to determine file format */ + switch (getc(infile)) { + case 'G': + read_gif_map(cinfo, infile); + break; + case 'P': + read_ppm_map(cinfo, infile); + break; + default: + ERREXIT(cinfo, JERR_BAD_CMAP_FILE); + break; + } +} + +#endif /* QUANT_2PASS_SUPPORTED */ diff --git a/common/jpeg/rdgif.c b/common/jpeg/rdgif.c new file mode 100644 index 00000000..b27c1675 --- /dev/null +++ b/common/jpeg/rdgif.c @@ -0,0 +1,38 @@ +/* + * rdgif.c + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to read input images in GIF format. + * + ***************************************************************************** + * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * + * the ability to read GIF files has been removed from the IJG distribution. * + * Sorry about that. * + ***************************************************************************** + * + * We are required to state that + * "The Graphics Interchange Format(c) is the Copyright property of + * CompuServe Incorporated. GIF(sm) is a Service Mark property of + * CompuServe Incorporated." + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef GIF_SUPPORTED + +/* + * The module selection routine for GIF format input. + */ + +GLOBAL(cjpeg_source_ptr) +jinit_read_gif (j_compress_ptr cinfo) +{ + fprintf(stderr, "GIF input is unsupported for legal reasons. Sorry.\n"); + exit(EXIT_FAILURE); + return NULL; /* keep compiler happy */ +} + +#endif /* GIF_SUPPORTED */ diff --git a/common/jpeg/rdppm.c b/common/jpeg/rdppm.c new file mode 100644 index 00000000..1df35c1b --- /dev/null +++ b/common/jpeg/rdppm.c @@ -0,0 +1,458 @@ +/* + * rdppm.c + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to read input images in PPM/PGM format. + * The extended 2-byte-per-sample raw PPM/PGM formats are supported. + * The PBMPLUS library is NOT required to compile this software + * (but it is highly useful as a set of PPM image manipulation programs). + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume input from + * an ordinary stdio stream. They further assume that reading begins + * at the start of the file; start_input may need work if the + * user interface has already read some data (e.g., to determine that + * the file is indeed PPM format). + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef PPM_SUPPORTED + + +/* Portions of this code are based on the PBMPLUS library, which is: +** +** Copyright (C) 1988 by Jef Poskanzer. +** +** Permission to use, copy, modify, and distribute this software and its +** documentation for any purpose and without fee is hereby granted, provided +** that the above copyright notice appear in all copies and that both that +** copyright notice and this permission notice appear in supporting +** documentation. This software is provided "as is" without express or +** implied warranty. +*/ + + +/* Macros to deal with unsigned chars as efficiently as compiler allows */ + +#ifdef HAVE_UNSIGNED_CHAR +typedef unsigned char U_CHAR; +#define UCH(x) ((int) (x)) +#else /* !HAVE_UNSIGNED_CHAR */ +#ifdef CHAR_IS_UNSIGNED +typedef char U_CHAR; +#define UCH(x) ((int) (x)) +#else +typedef char U_CHAR; +#define UCH(x) ((int) (x) & 0xFF) +#endif +#endif /* HAVE_UNSIGNED_CHAR */ + + +#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) + + +/* + * On most systems, reading individual bytes with getc() is drastically less + * efficient than buffering a row at a time with fread(). On PCs, we must + * allocate the buffer in near data space, because we are assuming small-data + * memory model, wherein fread() can't reach far memory. If you need to + * process very wide images on a PC, you might have to compile in large-memory + * model, or else replace fread() with a getc() loop --- which will be much + * slower. + */ + + +/* Private version of data source object */ + +typedef struct { + struct cjpeg_source_struct pub; /* public fields */ + + U_CHAR *iobuffer; /* non-FAR pointer to I/O buffer */ + JSAMPROW pixrow; /* FAR pointer to same */ + size_t buffer_width; /* width of I/O buffer */ + JSAMPLE *rescale; /* => maxval-remapping array, or NULL */ +} ppm_source_struct; + +typedef ppm_source_struct * ppm_source_ptr; + + +LOCAL(int) +pbm_getc (FILE * infile) +/* Read next char, skipping over any comments */ +/* A comment/newline sequence is returned as a newline */ +{ + register int ch; + + ch = getc(infile); + if (ch == '#') { + do { + ch = getc(infile); + } while (ch != '\n' && ch != EOF); + } + return ch; +} + + +LOCAL(unsigned int) +read_pbm_integer (j_compress_ptr cinfo, FILE * infile) +/* Read an unsigned decimal integer from the PPM file */ +/* Swallows one trailing character after the integer */ +/* Note that on a 16-bit-int machine, only values up to 64k can be read. */ +/* This should not be a problem in practice. */ +{ + register int ch; + register unsigned int val; + + /* Skip any leading whitespace */ + do { + ch = pbm_getc(infile); + if (ch == EOF) + ERREXIT(cinfo, JERR_INPUT_EOF); + } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'); + + if (ch < '0' || ch > '9') + ERREXIT(cinfo, JERR_PPM_NONNUMERIC); + + val = ch - '0'; + while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') { + val *= 10; + val += ch - '0'; + } + return val; +} + + +/* + * Read one row of pixels. + * + * We provide several different versions depending on input file format. + * In all cases, input is scaled to the size of JSAMPLE. + * + * A really fast path is provided for reading byte/sample raw files with + * maxval = MAXJSAMPLE, which is the normal case for 8-bit data. + */ + + +METHODDEF(JDIMENSION) +get_text_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading text-format PGM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + FILE * infile = source->pub.input_file; + register JSAMPROW ptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; + } + return 1; +} + + +METHODDEF(JDIMENSION) +get_text_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading text-format PPM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + FILE * infile = source->pub.input_file; + register JSAMPROW ptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; + *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; + *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; + } + return 1; +} + + +METHODDEF(JDIMENSION) +get_scaled_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading raw-byte-format PGM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + register JSAMPROW ptr; + register U_CHAR * bufferptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) + ERREXIT(cinfo, JERR_INPUT_EOF); + ptr = source->pub.buffer[0]; + bufferptr = source->iobuffer; + for (col = cinfo->image_width; col > 0; col--) { + *ptr++ = rescale[UCH(*bufferptr++)]; + } + return 1; +} + + +METHODDEF(JDIMENSION) +get_scaled_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading raw-byte-format PPM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + register JSAMPROW ptr; + register U_CHAR * bufferptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) + ERREXIT(cinfo, JERR_INPUT_EOF); + ptr = source->pub.buffer[0]; + bufferptr = source->iobuffer; + for (col = cinfo->image_width; col > 0; col--) { + *ptr++ = rescale[UCH(*bufferptr++)]; + *ptr++ = rescale[UCH(*bufferptr++)]; + *ptr++ = rescale[UCH(*bufferptr++)]; + } + return 1; +} + + +METHODDEF(JDIMENSION) +get_raw_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading raw-byte-format files with maxval = MAXJSAMPLE. + * In this case we just read right into the JSAMPLE buffer! + * Note that same code works for PPM and PGM files. + */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + + if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) + ERREXIT(cinfo, JERR_INPUT_EOF); + return 1; +} + + +METHODDEF(JDIMENSION) +get_word_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading raw-word-format PGM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + register JSAMPROW ptr; + register U_CHAR * bufferptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) + ERREXIT(cinfo, JERR_INPUT_EOF); + ptr = source->pub.buffer[0]; + bufferptr = source->iobuffer; + for (col = cinfo->image_width; col > 0; col--) { + register int temp; + temp = UCH(*bufferptr++); + temp |= UCH(*bufferptr++) << 8; + *ptr++ = rescale[temp]; + } + return 1; +} + + +METHODDEF(JDIMENSION) +get_word_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading raw-word-format PPM files with any maxval */ +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + register JSAMPROW ptr; + register U_CHAR * bufferptr; + register JSAMPLE *rescale = source->rescale; + JDIMENSION col; + + if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) + ERREXIT(cinfo, JERR_INPUT_EOF); + ptr = source->pub.buffer[0]; + bufferptr = source->iobuffer; + for (col = cinfo->image_width; col > 0; col--) { + register int temp; + temp = UCH(*bufferptr++); + temp |= UCH(*bufferptr++) << 8; + *ptr++ = rescale[temp]; + temp = UCH(*bufferptr++); + temp |= UCH(*bufferptr++) << 8; + *ptr++ = rescale[temp]; + temp = UCH(*bufferptr++); + temp |= UCH(*bufferptr++) << 8; + *ptr++ = rescale[temp]; + } + return 1; +} + + +/* + * Read the file header; return image size and component count. + */ + +METHODDEF(void) +start_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + ppm_source_ptr source = (ppm_source_ptr) sinfo; + int c; + unsigned int w, h, maxval; + boolean need_iobuffer, use_raw_buffer, need_rescale; + + if (getc(source->pub.input_file) != 'P') + ERREXIT(cinfo, JERR_PPM_NOT); + + c = getc(source->pub.input_file); /* subformat discriminator character */ + + /* detect unsupported variants (ie, PBM) before trying to read header */ + switch (c) { + case '2': /* it's a text-format PGM file */ + case '3': /* it's a text-format PPM file */ + case '5': /* it's a raw-format PGM file */ + case '6': /* it's a raw-format PPM file */ + break; + default: + ERREXIT(cinfo, JERR_PPM_NOT); + break; + } + + /* fetch the remaining header info */ + w = read_pbm_integer(cinfo, source->pub.input_file); + h = read_pbm_integer(cinfo, source->pub.input_file); + maxval = read_pbm_integer(cinfo, source->pub.input_file); + + if (w <= 0 || h <= 0 || maxval <= 0) /* error check */ + ERREXIT(cinfo, JERR_PPM_NOT); + + cinfo->data_precision = BITS_IN_JSAMPLE; /* we always rescale data to this */ + cinfo->image_width = (JDIMENSION) w; + cinfo->image_height = (JDIMENSION) h; + + /* initialize flags to most common settings */ + need_iobuffer = TRUE; /* do we need an I/O buffer? */ + use_raw_buffer = FALSE; /* do we map input buffer onto I/O buffer? */ + need_rescale = TRUE; /* do we need a rescale array? */ + + switch (c) { + case '2': /* it's a text-format PGM file */ + cinfo->input_components = 1; + cinfo->in_color_space = JCS_GRAYSCALE; + TRACEMS2(cinfo, 1, JTRC_PGM_TEXT, w, h); + source->pub.get_pixel_rows = get_text_gray_row; + need_iobuffer = FALSE; + break; + + case '3': /* it's a text-format PPM file */ + cinfo->input_components = 3; + cinfo->in_color_space = JCS_RGB; + TRACEMS2(cinfo, 1, JTRC_PPM_TEXT, w, h); + source->pub.get_pixel_rows = get_text_rgb_row; + need_iobuffer = FALSE; + break; + + case '5': /* it's a raw-format PGM file */ + cinfo->input_components = 1; + cinfo->in_color_space = JCS_GRAYSCALE; + TRACEMS2(cinfo, 1, JTRC_PGM, w, h); + if (maxval > 255) { + source->pub.get_pixel_rows = get_word_gray_row; + } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { + source->pub.get_pixel_rows = get_raw_row; + use_raw_buffer = TRUE; + need_rescale = FALSE; + } else { + source->pub.get_pixel_rows = get_scaled_gray_row; + } + break; + + case '6': /* it's a raw-format PPM file */ + cinfo->input_components = 3; + cinfo->in_color_space = JCS_RGB; + TRACEMS2(cinfo, 1, JTRC_PPM, w, h); + if (maxval > 255) { + source->pub.get_pixel_rows = get_word_rgb_row; + } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { + source->pub.get_pixel_rows = get_raw_row; + use_raw_buffer = TRUE; + need_rescale = FALSE; + } else { + source->pub.get_pixel_rows = get_scaled_rgb_row; + } + break; + } + + /* Allocate space for I/O buffer: 1 or 3 bytes or words/pixel. */ + if (need_iobuffer) { + source->buffer_width = (size_t) w * cinfo->input_components * + ((maxval<=255) ? SIZEOF(U_CHAR) : (2*SIZEOF(U_CHAR))); + source->iobuffer = (U_CHAR *) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + source->buffer_width); + } + + /* Create compressor input buffer. */ + if (use_raw_buffer) { + /* For unscaled raw-input case, we can just map it onto the I/O buffer. */ + /* Synthesize a JSAMPARRAY pointer structure */ + /* Cast here implies near->far pointer conversion on PCs */ + source->pixrow = (JSAMPROW) source->iobuffer; + source->pub.buffer = & source->pixrow; + source->pub.buffer_height = 1; + } else { + /* Need to translate anyway, so make a separate sample buffer. */ + source->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + (JDIMENSION) w * cinfo->input_components, (JDIMENSION) 1); + source->pub.buffer_height = 1; + } + + /* Compute the rescaling array if required. */ + if (need_rescale) { + INT32 val, half_maxval; + + /* On 16-bit-int machines we have to be careful of maxval = 65535 */ + source->rescale = (JSAMPLE *) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + (size_t) (((long) maxval + 1L) * SIZEOF(JSAMPLE))); + half_maxval = maxval / 2; + for (val = 0; val <= (INT32) maxval; val++) { + /* The multiplication here must be done in 32 bits to avoid overflow */ + source->rescale[val] = (JSAMPLE) ((val*MAXJSAMPLE + half_maxval)/maxval); + } + } +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + /* no work */ +} + + +/* + * The module selection routine for PPM format input. + */ + +GLOBAL(cjpeg_source_ptr) +jinit_read_ppm (j_compress_ptr cinfo) +{ + ppm_source_ptr source; + + /* Create module interface object */ + source = (ppm_source_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(ppm_source_struct)); + /* Fill in method ptrs, except get_pixel_rows which start_input sets */ + source->pub.start_input = start_input_ppm; + source->pub.finish_input = finish_input_ppm; + + return (cjpeg_source_ptr) source; +} + +#endif /* PPM_SUPPORTED */ diff --git a/common/jpeg/rdswitch.c b/common/jpeg/rdswitch.c new file mode 100644 index 00000000..4f4bb4f5 --- /dev/null +++ b/common/jpeg/rdswitch.c @@ -0,0 +1,332 @@ +/* + * rdswitch.c + * + * Copyright (C) 1991-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to process some of cjpeg's more complicated + * command-line switches. Switches processed here are: + * -qtables file Read quantization tables from text file + * -scans file Read scan script from text file + * -qslots N[,N,...] Set component quantization table selectors + * -sample HxV[,HxV,...] Set component sampling factors + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ +#include <ctype.h> /* to declare isdigit(), isspace() */ + + +LOCAL(int) +text_getc (FILE * file) +/* Read next char, skipping over any comments (# to end of line) */ +/* A comment/newline sequence is returned as a newline */ +{ + register int ch; + + ch = getc(file); + if (ch == '#') { + do { + ch = getc(file); + } while (ch != '\n' && ch != EOF); + } + return ch; +} + + +LOCAL(boolean) +read_text_integer (FILE * file, long * result, int * termchar) +/* Read an unsigned decimal integer from a file, store it in result */ +/* Reads one trailing character after the integer; returns it in termchar */ +{ + register int ch; + register long val; + + /* Skip any leading whitespace, detect EOF */ + do { + ch = text_getc(file); + if (ch == EOF) { + *termchar = ch; + return FALSE; + } + } while (isspace(ch)); + + if (! isdigit(ch)) { + *termchar = ch; + return FALSE; + } + + val = ch - '0'; + while ((ch = text_getc(file)) != EOF) { + if (! isdigit(ch)) + break; + val *= 10; + val += ch - '0'; + } + *result = val; + *termchar = ch; + return TRUE; +} + + +GLOBAL(boolean) +read_quant_tables (j_compress_ptr cinfo, char * filename, + int scale_factor, boolean force_baseline) +/* Read a set of quantization tables from the specified file. + * The file is plain ASCII text: decimal numbers with whitespace between. + * Comments preceded by '#' may be included in the file. + * There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values. + * The tables are implicitly numbered 0,1,etc. + * NOTE: does not affect the qslots mapping, which will default to selecting + * table 0 for luminance (or primary) components, 1 for chrominance components. + * You must use -qslots if you want a different component->table mapping. + */ +{ + FILE * fp; + int tblno, i, termchar; + long val; + unsigned int table[DCTSIZE2]; + + if ((fp = fopen(filename, "r")) == NULL) { + fprintf(stderr, "Can't open table file %s\n", filename); + return FALSE; + } + tblno = 0; + + while (read_text_integer(fp, &val, &termchar)) { /* read 1st element of table */ + if (tblno >= NUM_QUANT_TBLS) { + fprintf(stderr, "Too many tables in file %s\n", filename); + fclose(fp); + return FALSE; + } + table[0] = (unsigned int) val; + for (i = 1; i < DCTSIZE2; i++) { + if (! read_text_integer(fp, &val, &termchar)) { + fprintf(stderr, "Invalid table data in file %s\n", filename); + fclose(fp); + return FALSE; + } + table[i] = (unsigned int) val; + } + jpeg_add_quant_table(cinfo, tblno, table, scale_factor, force_baseline); + tblno++; + } + + if (termchar != EOF) { + fprintf(stderr, "Non-numeric data in file %s\n", filename); + fclose(fp); + return FALSE; + } + + fclose(fp); + return TRUE; +} + + +#ifdef C_MULTISCAN_FILES_SUPPORTED + +LOCAL(boolean) +read_scan_integer (FILE * file, long * result, int * termchar) +/* Variant of read_text_integer that always looks for a non-space termchar; + * this simplifies parsing of punctuation in scan scripts. + */ +{ + register int ch; + + if (! read_text_integer(file, result, termchar)) + return FALSE; + ch = *termchar; + while (ch != EOF && isspace(ch)) + ch = text_getc(file); + if (isdigit(ch)) { /* oops, put it back */ + if (ungetc(ch, file) == EOF) + return FALSE; + ch = ' '; + } else { + /* Any separators other than ';' and ':' are ignored; + * this allows user to insert commas, etc, if desired. + */ + if (ch != EOF && ch != ';' && ch != ':') + ch = ' '; + } + *termchar = ch; + return TRUE; +} + + +GLOBAL(boolean) +read_scan_script (j_compress_ptr cinfo, char * filename) +/* Read a scan script from the specified text file. + * Each entry in the file defines one scan to be emitted. + * Entries are separated by semicolons ';'. + * An entry contains one to four component indexes, + * optionally followed by a colon ':' and four progressive-JPEG parameters. + * The component indexes denote which component(s) are to be transmitted + * in the current scan. The first component has index 0. + * Sequential JPEG is used if the progressive-JPEG parameters are omitted. + * The file is free format text: any whitespace may appear between numbers + * and the ':' and ';' punctuation marks. Also, other punctuation (such + * as commas or dashes) can be placed between numbers if desired. + * Comments preceded by '#' may be included in the file. + * Note: we do very little validity checking here; + * jcmaster.c will validate the script parameters. + */ +{ + FILE * fp; + int scanno, ncomps, termchar; + long val; + jpeg_scan_info * scanptr; +#define MAX_SCANS 100 /* quite arbitrary limit */ + jpeg_scan_info scans[MAX_SCANS]; + + if ((fp = fopen(filename, "r")) == NULL) { + fprintf(stderr, "Can't open scan definition file %s\n", filename); + return FALSE; + } + scanptr = scans; + scanno = 0; + + while (read_scan_integer(fp, &val, &termchar)) { + if (scanno >= MAX_SCANS) { + fprintf(stderr, "Too many scans defined in file %s\n", filename); + fclose(fp); + return FALSE; + } + scanptr->component_index[0] = (int) val; + ncomps = 1; + while (termchar == ' ') { + if (ncomps >= MAX_COMPS_IN_SCAN) { + fprintf(stderr, "Too many components in one scan in file %s\n", + filename); + fclose(fp); + return FALSE; + } + if (! read_scan_integer(fp, &val, &termchar)) + goto bogus; + scanptr->component_index[ncomps] = (int) val; + ncomps++; + } + scanptr->comps_in_scan = ncomps; + if (termchar == ':') { + if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') + goto bogus; + scanptr->Ss = (int) val; + if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') + goto bogus; + scanptr->Se = (int) val; + if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') + goto bogus; + scanptr->Ah = (int) val; + if (! read_scan_integer(fp, &val, &termchar)) + goto bogus; + scanptr->Al = (int) val; + } else { + /* set non-progressive parameters */ + scanptr->Ss = 0; + scanptr->Se = DCTSIZE2-1; + scanptr->Ah = 0; + scanptr->Al = 0; + } + if (termchar != ';' && termchar != EOF) { +bogus: + fprintf(stderr, "Invalid scan entry format in file %s\n", filename); + fclose(fp); + return FALSE; + } + scanptr++, scanno++; + } + + if (termchar != EOF) { + fprintf(stderr, "Non-numeric data in file %s\n", filename); + fclose(fp); + return FALSE; + } + + if (scanno > 0) { + /* Stash completed scan list in cinfo structure. + * NOTE: for cjpeg's use, JPOOL_IMAGE is the right lifetime for this data, + * but if you want to compress multiple images you'd want JPOOL_PERMANENT. + */ + scanptr = (jpeg_scan_info *) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + scanno * SIZEOF(jpeg_scan_info)); + MEMCOPY(scanptr, scans, scanno * SIZEOF(jpeg_scan_info)); + cinfo->scan_info = scanptr; + cinfo->num_scans = scanno; + } + + fclose(fp); + return TRUE; +} + +#endif /* C_MULTISCAN_FILES_SUPPORTED */ + + +GLOBAL(boolean) +set_quant_slots (j_compress_ptr cinfo, char *arg) +/* Process a quantization-table-selectors parameter string, of the form + * N[,N,...] + * If there are more components than parameters, the last value is replicated. + */ +{ + int val = 0; /* default table # */ + int ci; + char ch; + + for (ci = 0; ci < MAX_COMPONENTS; ci++) { + if (*arg) { + ch = ','; /* if not set by sscanf, will be ',' */ + if (sscanf(arg, "%d%c", &val, &ch) < 1) + return FALSE; + if (ch != ',') /* syntax check */ + return FALSE; + if (val < 0 || val >= NUM_QUANT_TBLS) { + fprintf(stderr, "JPEG quantization tables are numbered 0..%d\n", + NUM_QUANT_TBLS-1); + return FALSE; + } + cinfo->comp_info[ci].quant_tbl_no = val; + while (*arg && *arg++ != ',') /* advance to next segment of arg string */ + ; + } else { + /* reached end of parameter, set remaining components to last table */ + cinfo->comp_info[ci].quant_tbl_no = val; + } + } + return TRUE; +} + + +GLOBAL(boolean) +set_sample_factors (j_compress_ptr cinfo, char *arg) +/* Process a sample-factors parameter string, of the form + * HxV[,HxV,...] + * If there are more components than parameters, "1x1" is assumed for the rest. + */ +{ + int ci, val1, val2; + char ch1, ch2; + + for (ci = 0; ci < MAX_COMPONENTS; ci++) { + if (*arg) { + ch2 = ','; /* if not set by sscanf, will be ',' */ + if (sscanf(arg, "%d%c%d%c", &val1, &ch1, &val2, &ch2) < 3) + return FALSE; + if ((ch1 != 'x' && ch1 != 'X') || ch2 != ',') /* syntax check */ + return FALSE; + if (val1 <= 0 || val1 > 4 || val2 <= 0 || val2 > 4) { + fprintf(stderr, "JPEG sampling factors must be 1..4\n"); + return FALSE; + } + cinfo->comp_info[ci].h_samp_factor = val1; + cinfo->comp_info[ci].v_samp_factor = val2; + while (*arg && *arg++ != ',') /* advance to next segment of arg string */ + ; + } else { + /* reached end of parameter, set remaining components to 1x1 sampling */ + cinfo->comp_info[ci].h_samp_factor = 1; + cinfo->comp_info[ci].v_samp_factor = 1; + } + } + return TRUE; +} diff --git a/common/jpeg/rdtarga.c b/common/jpeg/rdtarga.c new file mode 100644 index 00000000..4c2cd267 --- /dev/null +++ b/common/jpeg/rdtarga.c @@ -0,0 +1,500 @@ +/* + * rdtarga.c + * + * Copyright (C) 1991-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to read input images in Targa format. + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume input from + * an ordinary stdio stream. They further assume that reading begins + * at the start of the file; start_input may need work if the + * user interface has already read some data (e.g., to determine that + * the file is indeed Targa format). + * + * Based on code contributed by Lee Daniel Crocker. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef TARGA_SUPPORTED + + +/* Macros to deal with unsigned chars as efficiently as compiler allows */ + +#ifdef HAVE_UNSIGNED_CHAR +typedef unsigned char U_CHAR; +#define UCH(x) ((int) (x)) +#else /* !HAVE_UNSIGNED_CHAR */ +#ifdef CHAR_IS_UNSIGNED +typedef char U_CHAR; +#define UCH(x) ((int) (x)) +#else +typedef char U_CHAR; +#define UCH(x) ((int) (x) & 0xFF) +#endif +#endif /* HAVE_UNSIGNED_CHAR */ + + +#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) + + +/* Private version of data source object */ + +typedef struct _tga_source_struct * tga_source_ptr; + +typedef struct _tga_source_struct { + struct cjpeg_source_struct pub; /* public fields */ + + j_compress_ptr cinfo; /* back link saves passing separate parm */ + + JSAMPARRAY colormap; /* Targa colormap (converted to my format) */ + + jvirt_sarray_ptr whole_image; /* Needed if funny input row order */ + JDIMENSION current_row; /* Current logical row number to read */ + + /* Pointer to routine to extract next Targa pixel from input file */ + JMETHOD(void, read_pixel, (tga_source_ptr sinfo)); + + /* Result of read_pixel is delivered here: */ + U_CHAR tga_pixel[4]; + + int pixel_size; /* Bytes per Targa pixel (1 to 4) */ + + /* State info for reading RLE-coded pixels; both counts must be init to 0 */ + int block_count; /* # of pixels remaining in RLE block */ + int dup_pixel_count; /* # of times to duplicate previous pixel */ + + /* This saves the correct pixel-row-expansion method for preload_image */ + JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, + cjpeg_source_ptr sinfo)); +} tga_source_struct; + + +/* For expanding 5-bit pixel values to 8-bit with best rounding */ + +static const UINT8 c5to8bits[32] = { + 0, 8, 16, 25, 33, 41, 49, 58, + 66, 74, 82, 90, 99, 107, 115, 123, + 132, 140, 148, 156, 165, 173, 181, 189, + 197, 206, 214, 222, 230, 239, 247, 255 +}; + + + +LOCAL(int) +read_byte (tga_source_ptr sinfo) +/* Read next byte from Targa file */ +{ + register FILE *infile = sinfo->pub.input_file; + register int c; + + if ((c = getc(infile)) == EOF) + ERREXIT(sinfo->cinfo, JERR_INPUT_EOF); + return c; +} + + +LOCAL(void) +read_colormap (tga_source_ptr sinfo, int cmaplen, int mapentrysize) +/* Read the colormap from a Targa file */ +{ + int i; + + /* Presently only handles 24-bit BGR format */ + if (mapentrysize != 24) + ERREXIT(sinfo->cinfo, JERR_TGA_BADCMAP); + + for (i = 0; i < cmaplen; i++) { + sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); + sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); + } +} + + +/* + * read_pixel methods: get a single pixel from Targa file into tga_pixel[] + */ + +METHODDEF(void) +read_non_rle_pixel (tga_source_ptr sinfo) +/* Read one Targa pixel from the input file; no RLE expansion */ +{ + register FILE *infile = sinfo->pub.input_file; + register int i; + + for (i = 0; i < sinfo->pixel_size; i++) { + sinfo->tga_pixel[i] = (U_CHAR) getc(infile); + } +} + + +METHODDEF(void) +read_rle_pixel (tga_source_ptr sinfo) +/* Read one Targa pixel from the input file, expanding RLE data as needed */ +{ + register FILE *infile = sinfo->pub.input_file; + register int i; + + /* Duplicate previously read pixel? */ + if (sinfo->dup_pixel_count > 0) { + sinfo->dup_pixel_count--; + return; + } + + /* Time to read RLE block header? */ + if (--sinfo->block_count < 0) { /* decrement pixels remaining in block */ + i = read_byte(sinfo); + if (i & 0x80) { /* Start of duplicate-pixel block? */ + sinfo->dup_pixel_count = i & 0x7F; /* number of dups after this one */ + sinfo->block_count = 0; /* then read new block header */ + } else { + sinfo->block_count = i & 0x7F; /* number of pixels after this one */ + } + } + + /* Read next pixel */ + for (i = 0; i < sinfo->pixel_size; i++) { + sinfo->tga_pixel[i] = (U_CHAR) getc(infile); + } +} + + +/* + * Read one row of pixels. + * + * We provide several different versions depending on input file format. + */ + + +METHODDEF(JDIMENSION) +get_8bit_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 8-bit grayscale pixels */ +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + register JSAMPROW ptr; + register JDIMENSION col; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ + *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); + } + return 1; +} + +METHODDEF(JDIMENSION) +get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 8-bit colormap indexes */ +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + register int t; + register JSAMPROW ptr; + register JDIMENSION col; + register JSAMPARRAY colormap = source->colormap; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ + t = UCH(source->tga_pixel[0]); + *ptr++ = colormap[0][t]; + *ptr++ = colormap[1][t]; + *ptr++ = colormap[2][t]; + } + return 1; +} + +METHODDEF(JDIMENSION) +get_16bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 16-bit pixels */ +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + register int t; + register JSAMPROW ptr; + register JDIMENSION col; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ + t = UCH(source->tga_pixel[0]); + t += UCH(source->tga_pixel[1]) << 8; + /* We expand 5 bit data to 8 bit sample width. + * The format of the 16-bit (LSB first) input word is + * xRRRRRGGGGGBBBBB + */ + ptr[2] = (JSAMPLE) c5to8bits[t & 0x1F]; + t >>= 5; + ptr[1] = (JSAMPLE) c5to8bits[t & 0x1F]; + t >>= 5; + ptr[0] = (JSAMPLE) c5to8bits[t & 0x1F]; + ptr += 3; + } + return 1; +} + +METHODDEF(JDIMENSION) +get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +/* This version is for reading 24-bit pixels */ +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + register JSAMPROW ptr; + register JDIMENSION col; + + ptr = source->pub.buffer[0]; + for (col = cinfo->image_width; col > 0; col--) { + (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ + *ptr++ = (JSAMPLE) UCH(source->tga_pixel[2]); /* change BGR to RGB order */ + *ptr++ = (JSAMPLE) UCH(source->tga_pixel[1]); + *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); + } + return 1; +} + +/* + * Targa also defines a 32-bit pixel format with order B,G,R,A. + * We presently ignore the attribute byte, so the code for reading + * these pixels is identical to the 24-bit routine above. + * This works because the actual pixel length is only known to read_pixel. + */ + +#define get_32bit_row get_24bit_row + + +/* + * This method is for re-reading the input data in standard top-down + * row order. The entire image has already been read into whole_image + * with proper conversion of pixel format, but it's in a funny row order. + */ + +METHODDEF(JDIMENSION) +get_memory_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + JDIMENSION source_row; + + /* Compute row of source that maps to current_row of normal order */ + /* For now, assume image is bottom-up and not interlaced. */ + /* NEEDS WORK to support interlaced images! */ + source_row = cinfo->image_height - source->current_row - 1; + + /* Fetch that row from virtual array */ + source->pub.buffer = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, source->whole_image, + source_row, (JDIMENSION) 1, FALSE); + + source->current_row++; + return 1; +} + + +/* + * This method loads the image into whole_image during the first call on + * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call + * get_memory_row on subsequent calls. + */ + +METHODDEF(JDIMENSION) +preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + JDIMENSION row; + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + + /* Read the data into a virtual array in input-file row order. */ + for (row = 0; row < cinfo->image_height; row++) { + if (progress != NULL) { + progress->pub.pass_counter = (long) row; + progress->pub.pass_limit = (long) cinfo->image_height; + (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); + } + source->pub.buffer = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE); + (*source->get_pixel_rows) (cinfo, sinfo); + } + if (progress != NULL) + progress->completed_extra_passes++; + + /* Set up to read from the virtual array in unscrambled order */ + source->pub.get_pixel_rows = get_memory_row; + source->current_row = 0; + /* And read the first row */ + return get_memory_row(cinfo, sinfo); +} + + +/* + * Read the file header; return image size and component count. + */ + +METHODDEF(void) +start_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + tga_source_ptr source = (tga_source_ptr) sinfo; + U_CHAR targaheader[18]; + int idlen, cmaptype, subtype, flags, interlace_type, components; + unsigned int width, height, maplen; + boolean is_bottom_up; + +#define GET_2B(offset) ((unsigned int) UCH(targaheader[offset]) + \ + (((unsigned int) UCH(targaheader[offset+1])) << 8)) + + if (! ReadOK(source->pub.input_file, targaheader, 18)) + ERREXIT(cinfo, JERR_INPUT_EOF); + + /* Pretend "15-bit" pixels are 16-bit --- we ignore attribute bit anyway */ + if (targaheader[16] == 15) + targaheader[16] = 16; + + idlen = UCH(targaheader[0]); + cmaptype = UCH(targaheader[1]); + subtype = UCH(targaheader[2]); + maplen = GET_2B(5); + width = GET_2B(12); + height = GET_2B(14); + source->pixel_size = UCH(targaheader[16]) >> 3; + flags = UCH(targaheader[17]); /* Image Descriptor byte */ + + is_bottom_up = ((flags & 0x20) == 0); /* bit 5 set => top-down */ + interlace_type = flags >> 6; /* bits 6/7 are interlace code */ + + if (cmaptype > 1 || /* cmaptype must be 0 or 1 */ + source->pixel_size < 1 || source->pixel_size > 4 || + (UCH(targaheader[16]) & 7) != 0 || /* bits/pixel must be multiple of 8 */ + interlace_type != 0) /* currently don't allow interlaced image */ + ERREXIT(cinfo, JERR_TGA_BADPARMS); + + if (subtype > 8) { + /* It's an RLE-coded file */ + source->read_pixel = read_rle_pixel; + source->block_count = source->dup_pixel_count = 0; + subtype -= 8; + } else { + /* Non-RLE file */ + source->read_pixel = read_non_rle_pixel; + } + + /* Now should have subtype 1, 2, or 3 */ + components = 3; /* until proven different */ + cinfo->in_color_space = JCS_RGB; + + switch (subtype) { + case 1: /* Colormapped image */ + if (source->pixel_size == 1 && cmaptype == 1) + source->get_pixel_rows = get_8bit_row; + else + ERREXIT(cinfo, JERR_TGA_BADPARMS); + TRACEMS2(cinfo, 1, JTRC_TGA_MAPPED, width, height); + break; + case 2: /* RGB image */ + switch (source->pixel_size) { + case 2: + source->get_pixel_rows = get_16bit_row; + break; + case 3: + source->get_pixel_rows = get_24bit_row; + break; + case 4: + source->get_pixel_rows = get_32bit_row; + break; + default: + ERREXIT(cinfo, JERR_TGA_BADPARMS); + break; + } + TRACEMS2(cinfo, 1, JTRC_TGA, width, height); + break; + case 3: /* Grayscale image */ + components = 1; + cinfo->in_color_space = JCS_GRAYSCALE; + if (source->pixel_size == 1) + source->get_pixel_rows = get_8bit_gray_row; + else + ERREXIT(cinfo, JERR_TGA_BADPARMS); + TRACEMS2(cinfo, 1, JTRC_TGA_GRAY, width, height); + break; + default: + ERREXIT(cinfo, JERR_TGA_BADPARMS); + break; + } + + if (is_bottom_up) { + /* Create a virtual array to buffer the upside-down image. */ + source->whole_image = (*cinfo->mem->request_virt_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, + (JDIMENSION) width * components, (JDIMENSION) height, (JDIMENSION) 1); + if (cinfo->progress != NULL) { + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + progress->total_extra_passes++; /* count file input as separate pass */ + } + /* source->pub.buffer will point to the virtual array. */ + source->pub.buffer_height = 1; /* in case anyone looks at it */ + source->pub.get_pixel_rows = preload_image; + } else { + /* Don't need a virtual array, but do need a one-row input buffer. */ + source->whole_image = NULL; + source->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + (JDIMENSION) width * components, (JDIMENSION) 1); + source->pub.buffer_height = 1; + source->pub.get_pixel_rows = source->get_pixel_rows; + } + + while (idlen--) /* Throw away ID field */ + (void) read_byte(source); + + if (maplen > 0) { + if (maplen > 256 || GET_2B(3) != 0) + ERREXIT(cinfo, JERR_TGA_BADCMAP); + /* Allocate space to store the colormap */ + source->colormap = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) maplen, (JDIMENSION) 3); + /* and read it from the file */ + read_colormap(source, (int) maplen, UCH(targaheader[7])); + } else { + if (cmaptype) /* but you promised a cmap! */ + ERREXIT(cinfo, JERR_TGA_BADPARMS); + source->colormap = NULL; + } + + cinfo->input_components = components; + cinfo->data_precision = 8; + cinfo->image_width = width; + cinfo->image_height = height; +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) +{ + /* no work */ +} + + +/* + * The module selection routine for Targa format input. + */ + +GLOBAL(cjpeg_source_ptr) +jinit_read_targa (j_compress_ptr cinfo) +{ + tga_source_ptr source; + + /* Create module interface object */ + source = (tga_source_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(tga_source_struct)); + source->cinfo = cinfo; /* make back link for subroutines */ + /* Fill in method ptrs, except get_pixel_rows which start_input sets */ + source->pub.start_input = start_input_tga; + source->pub.finish_input = finish_input_tga; + + return (cjpeg_source_ptr) source; +} + +#endif /* TARGA_SUPPORTED */ diff --git a/common/jpeg/wrbmp.c b/common/jpeg/wrbmp.c new file mode 100644 index 00000000..3283b0f1 --- /dev/null +++ b/common/jpeg/wrbmp.c @@ -0,0 +1,442 @@ +/* + * wrbmp.c + * + * Copyright (C) 1994-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to write output images in Microsoft "BMP" + * format (MS Windows 3.x and OS/2 1.x flavors). + * Either 8-bit colormapped or 24-bit full-color format can be written. + * No compression is supported. + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume output to + * an ordinary stdio stream. + * + * This code contributed by James Arthur Boucher. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef BMP_SUPPORTED + + +/* + * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. + * This is not yet implemented. + */ + +#if BITS_IN_JSAMPLE != 8 + Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ +#endif + +/* + * Since BMP stores scanlines bottom-to-top, we have to invert the image + * from JPEG's top-to-bottom order. To do this, we save the outgoing data + * in a virtual array during put_pixel_row calls, then actually emit the + * BMP file during finish_output. The virtual array contains one JSAMPLE per + * pixel if the output is grayscale or colormapped, three if it is full color. + */ + +/* Private version of data destination object */ + +typedef struct { + struct djpeg_dest_struct pub; /* public fields */ + + boolean is_os2; /* saves the OS2 format request flag */ + + jvirt_sarray_ptr whole_image; /* needed to reverse row order */ + JDIMENSION data_width; /* JSAMPLEs per row */ + JDIMENSION row_width; /* physical width of one row in the BMP file */ + int pad_bytes; /* number of padding bytes needed per row */ + JDIMENSION cur_output_row; /* next row# to write to virtual array */ +} bmp_dest_struct; + +typedef bmp_dest_struct * bmp_dest_ptr; + + +/* Forward declarations */ +LOCAL(void) write_colormap + JPP((j_decompress_ptr cinfo, bmp_dest_ptr dest, + int map_colors, int map_entry_size)); + + +/* + * Write some pixel data. + * In this module rows_supplied will always be 1. + */ + +METHODDEF(void) +put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +/* This version is for writing 24-bit pixels */ +{ + bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; + JSAMPARRAY image_ptr; + register JSAMPROW inptr, outptr; + register JDIMENSION col; + int pad; + + /* Access next row in virtual array */ + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, dest->whole_image, + dest->cur_output_row, (JDIMENSION) 1, TRUE); + dest->cur_output_row++; + + /* Transfer data. Note destination values must be in BGR order + * (even though Microsoft's own documents say the opposite). + */ + inptr = dest->pub.buffer[0]; + outptr = image_ptr[0]; + for (col = cinfo->output_width; col > 0; col--) { + outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ + outptr[1] = *inptr++; + outptr[0] = *inptr++; + outptr += 3; + } + + /* Zero out the pad bytes. */ + pad = dest->pad_bytes; + while (--pad >= 0) + *outptr++ = 0; +} + +METHODDEF(void) +put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +/* This version is for grayscale OR quantized color output */ +{ + bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; + JSAMPARRAY image_ptr; + register JSAMPROW inptr, outptr; + register JDIMENSION col; + int pad; + + /* Access next row in virtual array */ + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, dest->whole_image, + dest->cur_output_row, (JDIMENSION) 1, TRUE); + dest->cur_output_row++; + + /* Transfer data. */ + inptr = dest->pub.buffer[0]; + outptr = image_ptr[0]; + for (col = cinfo->output_width; col > 0; col--) { + *outptr++ = *inptr++; /* can omit GETJSAMPLE() safely */ + } + + /* Zero out the pad bytes. */ + pad = dest->pad_bytes; + while (--pad >= 0) + *outptr++ = 0; +} + + +/* + * Startup: normally writes the file header. + * In this module we may as well postpone everything until finish_output. + */ + +METHODDEF(void) +start_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + /* no work here */ +} + + +/* + * Finish up at the end of the file. + * + * Here is where we really output the BMP file. + * + * First, routines to write the Windows and OS/2 variants of the file header. + */ + +LOCAL(void) +write_bmp_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) +/* Write a Windows-style BMP file header, including colormap if needed */ +{ + char bmpfileheader[14]; + char bmpinfoheader[40]; +#define PUT_2B(array,offset,value) \ + (array[offset] = (char) ((value) & 0xFF), \ + array[offset+1] = (char) (((value) >> 8) & 0xFF)) +#define PUT_4B(array,offset,value) \ + (array[offset] = (char) ((value) & 0xFF), \ + array[offset+1] = (char) (((value) >> 8) & 0xFF), \ + array[offset+2] = (char) (((value) >> 16) & 0xFF), \ + array[offset+3] = (char) (((value) >> 24) & 0xFF)) + INT32 headersize, bfSize; + int bits_per_pixel, cmap_entries; + + /* Compute colormap size and total file size */ + if (cinfo->out_color_space == JCS_RGB) { + if (cinfo->quantize_colors) { + /* Colormapped RGB */ + bits_per_pixel = 8; + cmap_entries = 256; + } else { + /* Unquantized, full color RGB */ + bits_per_pixel = 24; + cmap_entries = 0; + } + } else { + /* Grayscale output. We need to fake a 256-entry colormap. */ + bits_per_pixel = 8; + cmap_entries = 256; + } + /* File size */ + headersize = 14 + 40 + cmap_entries * 4; /* Header and colormap */ + bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; + + /* Set unused fields of header to 0 */ + MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); + MEMZERO(bmpinfoheader, SIZEOF(bmpinfoheader)); + + /* Fill the file header */ + bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ + bmpfileheader[1] = 0x4D; + PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ + /* we leave bfReserved1 & bfReserved2 = 0 */ + PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ + + /* Fill the info header (Microsoft calls this a BITMAPINFOHEADER) */ + PUT_2B(bmpinfoheader, 0, 40); /* biSize */ + PUT_4B(bmpinfoheader, 4, cinfo->output_width); /* biWidth */ + PUT_4B(bmpinfoheader, 8, cinfo->output_height); /* biHeight */ + PUT_2B(bmpinfoheader, 12, 1); /* biPlanes - must be 1 */ + PUT_2B(bmpinfoheader, 14, bits_per_pixel); /* biBitCount */ + /* we leave biCompression = 0, for none */ + /* we leave biSizeImage = 0; this is correct for uncompressed data */ + if (cinfo->density_unit == 2) { /* if have density in dots/cm, then */ + PUT_4B(bmpinfoheader, 24, (INT32) (cinfo->X_density*100)); /* XPels/M */ + PUT_4B(bmpinfoheader, 28, (INT32) (cinfo->Y_density*100)); /* XPels/M */ + } + PUT_2B(bmpinfoheader, 32, cmap_entries); /* biClrUsed */ + /* we leave biClrImportant = 0 */ + + if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) + ERREXIT(cinfo, JERR_FILE_WRITE); + if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t) 40) + ERREXIT(cinfo, JERR_FILE_WRITE); + + if (cmap_entries > 0) + write_colormap(cinfo, dest, cmap_entries, 4); +} + + +LOCAL(void) +write_os2_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) +/* Write an OS2-style BMP file header, including colormap if needed */ +{ + char bmpfileheader[14]; + char bmpcoreheader[12]; + INT32 headersize, bfSize; + int bits_per_pixel, cmap_entries; + + /* Compute colormap size and total file size */ + if (cinfo->out_color_space == JCS_RGB) { + if (cinfo->quantize_colors) { + /* Colormapped RGB */ + bits_per_pixel = 8; + cmap_entries = 256; + } else { + /* Unquantized, full color RGB */ + bits_per_pixel = 24; + cmap_entries = 0; + } + } else { + /* Grayscale output. We need to fake a 256-entry colormap. */ + bits_per_pixel = 8; + cmap_entries = 256; + } + /* File size */ + headersize = 14 + 12 + cmap_entries * 3; /* Header and colormap */ + bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; + + /* Set unused fields of header to 0 */ + MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); + MEMZERO(bmpcoreheader, SIZEOF(bmpcoreheader)); + + /* Fill the file header */ + bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ + bmpfileheader[1] = 0x4D; + PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ + /* we leave bfReserved1 & bfReserved2 = 0 */ + PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ + + /* Fill the info header (Microsoft calls this a BITMAPCOREHEADER) */ + PUT_2B(bmpcoreheader, 0, 12); /* bcSize */ + PUT_2B(bmpcoreheader, 4, cinfo->output_width); /* bcWidth */ + PUT_2B(bmpcoreheader, 6, cinfo->output_height); /* bcHeight */ + PUT_2B(bmpcoreheader, 8, 1); /* bcPlanes - must be 1 */ + PUT_2B(bmpcoreheader, 10, bits_per_pixel); /* bcBitCount */ + + if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) + ERREXIT(cinfo, JERR_FILE_WRITE); + if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t) 12) + ERREXIT(cinfo, JERR_FILE_WRITE); + + if (cmap_entries > 0) + write_colormap(cinfo, dest, cmap_entries, 3); +} + + +/* + * Write the colormap. + * Windows uses BGR0 map entries; OS/2 uses BGR entries. + */ + +LOCAL(void) +write_colormap (j_decompress_ptr cinfo, bmp_dest_ptr dest, + int map_colors, int map_entry_size) +{ + JSAMPARRAY colormap = cinfo->colormap; + int num_colors = cinfo->actual_number_of_colors; + FILE * outfile = dest->pub.output_file; + int i; + + if (colormap != NULL) { + if (cinfo->out_color_components == 3) { + /* Normal case with RGB colormap */ + for (i = 0; i < num_colors; i++) { + putc(GETJSAMPLE(colormap[2][i]), outfile); + putc(GETJSAMPLE(colormap[1][i]), outfile); + putc(GETJSAMPLE(colormap[0][i]), outfile); + if (map_entry_size == 4) + putc(0, outfile); + } + } else { + /* Grayscale colormap (only happens with grayscale quantization) */ + for (i = 0; i < num_colors; i++) { + putc(GETJSAMPLE(colormap[0][i]), outfile); + putc(GETJSAMPLE(colormap[0][i]), outfile); + putc(GETJSAMPLE(colormap[0][i]), outfile); + if (map_entry_size == 4) + putc(0, outfile); + } + } + } else { + /* If no colormap, must be grayscale data. Generate a linear "map". */ + for (i = 0; i < 256; i++) { + putc(i, outfile); + putc(i, outfile); + putc(i, outfile); + if (map_entry_size == 4) + putc(0, outfile); + } + } + /* Pad colormap with zeros to ensure specified number of colormap entries */ + if (i > map_colors) + ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, i); + for (; i < map_colors; i++) { + putc(0, outfile); + putc(0, outfile); + putc(0, outfile); + if (map_entry_size == 4) + putc(0, outfile); + } +} + + +METHODDEF(void) +finish_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; + register FILE * outfile = dest->pub.output_file; + JSAMPARRAY image_ptr; + register JSAMPROW data_ptr; + JDIMENSION row; + register JDIMENSION col; + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + + /* Write the header and colormap */ + if (dest->is_os2) + write_os2_header(cinfo, dest); + else + write_bmp_header(cinfo, dest); + + /* Write the file body from our virtual array */ + for (row = cinfo->output_height; row > 0; row--) { + if (progress != NULL) { + progress->pub.pass_counter = (long) (cinfo->output_height - row); + progress->pub.pass_limit = (long) cinfo->output_height; + (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); + } + image_ptr = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, dest->whole_image, row-1, (JDIMENSION) 1, FALSE); + data_ptr = image_ptr[0]; + for (col = dest->row_width; col > 0; col--) { + putc(GETJSAMPLE(*data_ptr), outfile); + data_ptr++; + } + } + if (progress != NULL) + progress->completed_extra_passes++; + + /* Make sure we wrote the output file OK */ + fflush(outfile); + if (ferror(outfile)) + ERREXIT(cinfo, JERR_FILE_WRITE); +} + + +/* + * The module selection routine for BMP format output. + */ + +GLOBAL(djpeg_dest_ptr) +jinit_write_bmp (j_decompress_ptr cinfo, boolean is_os2) +{ + bmp_dest_ptr dest; + JDIMENSION row_width; + + /* Create module interface object, fill in method pointers */ + dest = (bmp_dest_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(bmp_dest_struct)); + dest->pub.start_output = start_output_bmp; + dest->pub.finish_output = finish_output_bmp; + dest->is_os2 = is_os2; + + if (cinfo->out_color_space == JCS_GRAYSCALE) { + dest->pub.put_pixel_rows = put_gray_rows; + } else if (cinfo->out_color_space == JCS_RGB) { + if (cinfo->quantize_colors) + dest->pub.put_pixel_rows = put_gray_rows; + else + dest->pub.put_pixel_rows = put_pixel_rows; + } else { + ERREXIT(cinfo, JERR_BMP_COLORSPACE); + } + + /* Calculate output image dimensions so we can allocate space */ + jpeg_calc_output_dimensions(cinfo); + + /* Determine width of rows in the BMP file (padded to 4-byte boundary). */ + row_width = cinfo->output_width * cinfo->output_components; + dest->data_width = row_width; + while ((row_width & 3) != 0) row_width++; + dest->row_width = row_width; + dest->pad_bytes = (int) (row_width - dest->data_width); + + /* Allocate space for inversion array, prepare for write pass */ + dest->whole_image = (*cinfo->mem->request_virt_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, + row_width, cinfo->output_height, (JDIMENSION) 1); + dest->cur_output_row = 0; + if (cinfo->progress != NULL) { + cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; + progress->total_extra_passes++; /* count file input as separate pass */ + } + + /* Create decompressor output buffer. */ + dest->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, row_width, (JDIMENSION) 1); + dest->pub.buffer_height = 1; + + return (djpeg_dest_ptr) dest; +} + +#endif /* BMP_SUPPORTED */ diff --git a/common/jpeg/wrgif.c b/common/jpeg/wrgif.c new file mode 100644 index 00000000..5fe83283 --- /dev/null +++ b/common/jpeg/wrgif.c @@ -0,0 +1,399 @@ +/* + * wrgif.c + * + * Copyright (C) 1991-1997, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to write output images in GIF format. + * + ************************************************************************** + * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * + * this code has been modified to output "uncompressed GIF" files. * + * There is no trace of the LZW algorithm in this file. * + ************************************************************************** + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume output to + * an ordinary stdio stream. + */ + +/* + * This code is loosely based on ppmtogif from the PBMPLUS distribution + * of Feb. 1991. That file contains the following copyright notice: + * Based on GIFENCODE by David Rowley <mgardi@watdscu.waterloo.edu>. + * Lempel-Ziv compression based on "compress" by Spencer W. Thomas et al. + * Copyright (C) 1989 by Jef Poskanzer. + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation. This software is provided "as is" without express or + * implied warranty. + * + * We are also required to state that + * "The Graphics Interchange Format(c) is the Copyright property of + * CompuServe Incorporated. GIF(sm) is a Service Mark property of + * CompuServe Incorporated." + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef GIF_SUPPORTED + + +/* Private version of data destination object */ + +typedef struct { + struct djpeg_dest_struct pub; /* public fields */ + + j_decompress_ptr cinfo; /* back link saves passing separate parm */ + + /* State for packing variable-width codes into a bitstream */ + int n_bits; /* current number of bits/code */ + int maxcode; /* maximum code, given n_bits */ + INT32 cur_accum; /* holds bits not yet output */ + int cur_bits; /* # of bits in cur_accum */ + + /* State for GIF code assignment */ + int ClearCode; /* clear code (doesn't change) */ + int EOFCode; /* EOF code (ditto) */ + int code_counter; /* counts output symbols */ + + /* GIF data packet construction buffer */ + int bytesinpkt; /* # of bytes in current packet */ + char packetbuf[256]; /* workspace for accumulating packet */ + +} gif_dest_struct; + +typedef gif_dest_struct * gif_dest_ptr; + +/* Largest value that will fit in N bits */ +#define MAXCODE(n_bits) ((1 << (n_bits)) - 1) + + +/* + * Routines to package finished data bytes into GIF data blocks. + * A data block consists of a count byte (1..255) and that many data bytes. + */ + +LOCAL(void) +flush_packet (gif_dest_ptr dinfo) +/* flush any accumulated data */ +{ + if (dinfo->bytesinpkt > 0) { /* never write zero-length packet */ + dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++; + if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt) + != (size_t) dinfo->bytesinpkt) + ERREXIT(dinfo->cinfo, JERR_FILE_WRITE); + dinfo->bytesinpkt = 0; + } +} + + +/* Add a character to current packet; flush to disk if necessary */ +#define CHAR_OUT(dinfo,c) \ + { (dinfo)->packetbuf[++(dinfo)->bytesinpkt] = (char) (c); \ + if ((dinfo)->bytesinpkt >= 255) \ + flush_packet(dinfo); \ + } + + +/* Routine to convert variable-width codes into a byte stream */ + +LOCAL(void) +output (gif_dest_ptr dinfo, int code) +/* Emit a code of n_bits bits */ +/* Uses cur_accum and cur_bits to reblock into 8-bit bytes */ +{ + dinfo->cur_accum |= ((INT32) code) << dinfo->cur_bits; + dinfo->cur_bits += dinfo->n_bits; + + while (dinfo->cur_bits >= 8) { + CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); + dinfo->cur_accum >>= 8; + dinfo->cur_bits -= 8; + } +} + + +/* The pseudo-compression algorithm. + * + * In this module we simply output each pixel value as a separate symbol; + * thus, no compression occurs. In fact, there is expansion of one bit per + * pixel, because we use a symbol width one bit wider than the pixel width. + * + * GIF ordinarily uses variable-width symbols, and the decoder will expect + * to ratchet up the symbol width after a fixed number of symbols. + * To simplify the logic and keep the expansion penalty down, we emit a + * GIF Clear code to reset the decoder just before the width would ratchet up. + * Thus, all the symbols in the output file will have the same bit width. + * Note that emitting the Clear codes at the right times is a mere matter of + * counting output symbols and is in no way dependent on the LZW patent. + * + * With a small basic pixel width (low color count), Clear codes will be + * needed very frequently, causing the file to expand even more. So this + * simplistic approach wouldn't work too well on bilevel images, for example. + * But for output of JPEG conversions the pixel width will usually be 8 bits + * (129 to 256 colors), so the overhead added by Clear symbols is only about + * one symbol in every 256. + */ + +LOCAL(void) +compress_init (gif_dest_ptr dinfo, int i_bits) +/* Initialize pseudo-compressor */ +{ + /* init all the state variables */ + dinfo->n_bits = i_bits; + dinfo->maxcode = MAXCODE(dinfo->n_bits); + dinfo->ClearCode = (1 << (i_bits - 1)); + dinfo->EOFCode = dinfo->ClearCode + 1; + dinfo->code_counter = dinfo->ClearCode + 2; + /* init output buffering vars */ + dinfo->bytesinpkt = 0; + dinfo->cur_accum = 0; + dinfo->cur_bits = 0; + /* GIF specifies an initial Clear code */ + output(dinfo, dinfo->ClearCode); +} + + +LOCAL(void) +compress_pixel (gif_dest_ptr dinfo, int c) +/* Accept and "compress" one pixel value. + * The given value must be less than n_bits wide. + */ +{ + /* Output the given pixel value as a symbol. */ + output(dinfo, c); + /* Issue Clear codes often enough to keep the reader from ratcheting up + * its symbol size. + */ + if (dinfo->code_counter < dinfo->maxcode) { + dinfo->code_counter++; + } else { + output(dinfo, dinfo->ClearCode); + dinfo->code_counter = dinfo->ClearCode + 2; /* reset the counter */ + } +} + + +LOCAL(void) +compress_term (gif_dest_ptr dinfo) +/* Clean up at end */ +{ + /* Send an EOF code */ + output(dinfo, dinfo->EOFCode); + /* Flush the bit-packing buffer */ + if (dinfo->cur_bits > 0) { + CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); + } + /* Flush the packet buffer */ + flush_packet(dinfo); +} + + +/* GIF header construction */ + + +LOCAL(void) +put_word (gif_dest_ptr dinfo, unsigned int w) +/* Emit a 16-bit word, LSB first */ +{ + putc(w & 0xFF, dinfo->pub.output_file); + putc((w >> 8) & 0xFF, dinfo->pub.output_file); +} + + +LOCAL(void) +put_3bytes (gif_dest_ptr dinfo, int val) +/* Emit 3 copies of same byte value --- handy subr for colormap construction */ +{ + putc(val, dinfo->pub.output_file); + putc(val, dinfo->pub.output_file); + putc(val, dinfo->pub.output_file); +} + + +LOCAL(void) +emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap) +/* Output the GIF file header, including color map */ +/* If colormap==NULL, synthesize a gray-scale colormap */ +{ + int BitsPerPixel, ColorMapSize, InitCodeSize, FlagByte; + int cshift = dinfo->cinfo->data_precision - 8; + int i; + + if (num_colors > 256) + ERREXIT1(dinfo->cinfo, JERR_TOO_MANY_COLORS, num_colors); + /* Compute bits/pixel and related values */ + BitsPerPixel = 1; + while (num_colors > (1 << BitsPerPixel)) + BitsPerPixel++; + ColorMapSize = 1 << BitsPerPixel; + if (BitsPerPixel <= 1) + InitCodeSize = 2; + else + InitCodeSize = BitsPerPixel; + /* + * Write the GIF header. + * Note that we generate a plain GIF87 header for maximum compatibility. + */ + putc('G', dinfo->pub.output_file); + putc('I', dinfo->pub.output_file); + putc('F', dinfo->pub.output_file); + putc('8', dinfo->pub.output_file); + putc('7', dinfo->pub.output_file); + putc('a', dinfo->pub.output_file); + /* Write the Logical Screen Descriptor */ + put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); + put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); + FlagByte = 0x80; /* Yes, there is a global color table */ + FlagByte |= (BitsPerPixel-1) << 4; /* color resolution */ + FlagByte |= (BitsPerPixel-1); /* size of global color table */ + putc(FlagByte, dinfo->pub.output_file); + putc(0, dinfo->pub.output_file); /* Background color index */ + putc(0, dinfo->pub.output_file); /* Reserved (aspect ratio in GIF89) */ + /* Write the Global Color Map */ + /* If the color map is more than 8 bits precision, */ + /* we reduce it to 8 bits by shifting */ + for (i=0; i < ColorMapSize; i++) { + if (i < num_colors) { + if (colormap != NULL) { + if (dinfo->cinfo->out_color_space == JCS_RGB) { + /* Normal case: RGB color map */ + putc(GETJSAMPLE(colormap[0][i]) >> cshift, dinfo->pub.output_file); + putc(GETJSAMPLE(colormap[1][i]) >> cshift, dinfo->pub.output_file); + putc(GETJSAMPLE(colormap[2][i]) >> cshift, dinfo->pub.output_file); + } else { + /* Grayscale "color map": possible if quantizing grayscale image */ + put_3bytes(dinfo, GETJSAMPLE(colormap[0][i]) >> cshift); + } + } else { + /* Create a gray-scale map of num_colors values, range 0..255 */ + put_3bytes(dinfo, (i * 255 + (num_colors-1)/2) / (num_colors-1)); + } + } else { + /* fill out the map to a power of 2 */ + put_3bytes(dinfo, 0); + } + } + /* Write image separator and Image Descriptor */ + putc(',', dinfo->pub.output_file); /* separator */ + put_word(dinfo, 0); /* left/top offset */ + put_word(dinfo, 0); + put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); /* image size */ + put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); + /* flag byte: not interlaced, no local color map */ + putc(0x00, dinfo->pub.output_file); + /* Write Initial Code Size byte */ + putc(InitCodeSize, dinfo->pub.output_file); + + /* Initialize for "compression" of image data */ + compress_init(dinfo, InitCodeSize+1); +} + + +/* + * Startup: write the file header. + */ + +METHODDEF(void) +start_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + gif_dest_ptr dest = (gif_dest_ptr) dinfo; + + if (cinfo->quantize_colors) + emit_header(dest, cinfo->actual_number_of_colors, cinfo->colormap); + else + emit_header(dest, 256, (JSAMPARRAY) NULL); +} + + +/* + * Write some pixel data. + * In this module rows_supplied will always be 1. + */ + +METHODDEF(void) +put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + gif_dest_ptr dest = (gif_dest_ptr) dinfo; + register JSAMPROW ptr; + register JDIMENSION col; + + ptr = dest->pub.buffer[0]; + for (col = cinfo->output_width; col > 0; col--) { + compress_pixel(dest, GETJSAMPLE(*ptr++)); + } +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + gif_dest_ptr dest = (gif_dest_ptr) dinfo; + + /* Flush "compression" mechanism */ + compress_term(dest); + /* Write a zero-length data block to end the series */ + putc(0, dest->pub.output_file); + /* Write the GIF terminator mark */ + putc(';', dest->pub.output_file); + /* Make sure we wrote the output file OK */ + fflush(dest->pub.output_file); + if (ferror(dest->pub.output_file)) + ERREXIT(cinfo, JERR_FILE_WRITE); +} + + +/* + * The module selection routine for GIF format output. + */ + +GLOBAL(djpeg_dest_ptr) +jinit_write_gif (j_decompress_ptr cinfo) +{ + gif_dest_ptr dest; + + /* Create module interface object, fill in method pointers */ + dest = (gif_dest_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(gif_dest_struct)); + dest->cinfo = cinfo; /* make back link for subroutines */ + dest->pub.start_output = start_output_gif; + dest->pub.put_pixel_rows = put_pixel_rows; + dest->pub.finish_output = finish_output_gif; + + if (cinfo->out_color_space != JCS_GRAYSCALE && + cinfo->out_color_space != JCS_RGB) + ERREXIT(cinfo, JERR_GIF_COLORSPACE); + + /* Force quantization if color or if > 8 bits input */ + if (cinfo->out_color_space != JCS_GRAYSCALE || cinfo->data_precision > 8) { + /* Force quantization to at most 256 colors */ + cinfo->quantize_colors = TRUE; + if (cinfo->desired_number_of_colors > 256) + cinfo->desired_number_of_colors = 256; + } + + /* Calculate output image dimensions so we can allocate space */ + jpeg_calc_output_dimensions(cinfo); + + if (cinfo->output_components != 1) /* safety check: just one component? */ + ERREXIT(cinfo, JERR_GIF_BUG); + + /* Create decompressor output buffer. */ + dest->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width, (JDIMENSION) 1); + dest->pub.buffer_height = 1; + + return (djpeg_dest_ptr) dest; +} + +#endif /* GIF_SUPPORTED */ diff --git a/common/jpeg/wrppm.c b/common/jpeg/wrppm.c new file mode 100644 index 00000000..6c6d9088 --- /dev/null +++ b/common/jpeg/wrppm.c @@ -0,0 +1,268 @@ +/* + * wrppm.c + * + * Copyright (C) 1991-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to write output images in PPM/PGM format. + * The extended 2-byte-per-sample raw PPM/PGM formats are supported. + * The PBMPLUS library is NOT required to compile this software + * (but it is highly useful as a set of PPM image manipulation programs). + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume output to + * an ordinary stdio stream. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef PPM_SUPPORTED + + +/* + * For 12-bit JPEG data, we either downscale the values to 8 bits + * (to write standard byte-per-sample PPM/PGM files), or output + * nonstandard word-per-sample PPM/PGM files. Downscaling is done + * if PPM_NORAWWORD is defined (this can be done in the Makefile + * or in jconfig.h). + * (When the core library supports data precision reduction, a cleaner + * implementation will be to ask for that instead.) + */ + +#if BITS_IN_JSAMPLE == 8 +#define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) (v) +#define BYTESPERSAMPLE 1 +#define PPM_MAXVAL 255 +#else +#ifdef PPM_NORAWWORD +#define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) ((v) >> (BITS_IN_JSAMPLE-8)) +#define BYTESPERSAMPLE 1 +#define PPM_MAXVAL 255 +#else +/* The word-per-sample format always puts the LSB first. */ +#define PUTPPMSAMPLE(ptr,v) \ + { register int val_ = v; \ + *ptr++ = (char) (val_ & 0xFF); \ + *ptr++ = (char) ((val_ >> 8) & 0xFF); \ + } +#define BYTESPERSAMPLE 2 +#define PPM_MAXVAL ((1<<BITS_IN_JSAMPLE)-1) +#endif +#endif + + +/* + * When JSAMPLE is the same size as char, we can just fwrite() the + * decompressed data to the PPM or PGM file. On PCs, in order to make this + * work the output buffer must be allocated in near data space, because we are + * assuming small-data memory model wherein fwrite() can't reach far memory. + * If you need to process very wide images on a PC, you might have to compile + * in large-memory model, or else replace fwrite() with a putc() loop --- + * which will be much slower. + */ + + +/* Private version of data destination object */ + +typedef struct { + struct djpeg_dest_struct pub; /* public fields */ + + /* Usually these two pointers point to the same place: */ + char *iobuffer; /* fwrite's I/O buffer */ + JSAMPROW pixrow; /* decompressor output buffer */ + size_t buffer_width; /* width of I/O buffer */ + JDIMENSION samples_per_row; /* JSAMPLEs per output row */ +} ppm_dest_struct; + +typedef ppm_dest_struct * ppm_dest_ptr; + + +/* + * Write some pixel data. + * In this module rows_supplied will always be 1. + * + * put_pixel_rows handles the "normal" 8-bit case where the decompressor + * output buffer is physically the same as the fwrite buffer. + */ + +METHODDEF(void) +put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; + + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +/* + * This code is used when we have to copy the data and apply a pixel + * format translation. Typically this only happens in 12-bit mode. + */ + +METHODDEF(void) +copy_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; + register char * bufferptr; + register JSAMPROW ptr; + register JDIMENSION col; + + ptr = dest->pub.buffer[0]; + bufferptr = dest->iobuffer; + for (col = dest->samples_per_row; col > 0; col--) { + PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++)); + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +/* + * Write some pixel data when color quantization is in effect. + * We have to demap the color index values to straight data. + */ + +METHODDEF(void) +put_demapped_rgb (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; + register char * bufferptr; + register int pixval; + register JSAMPROW ptr; + register JSAMPROW color_map0 = cinfo->colormap[0]; + register JSAMPROW color_map1 = cinfo->colormap[1]; + register JSAMPROW color_map2 = cinfo->colormap[2]; + register JDIMENSION col; + + ptr = dest->pub.buffer[0]; + bufferptr = dest->iobuffer; + for (col = cinfo->output_width; col > 0; col--) { + pixval = GETJSAMPLE(*ptr++); + PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map0[pixval])); + PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map1[pixval])); + PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map2[pixval])); + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +METHODDEF(void) +put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; + register char * bufferptr; + register JSAMPROW ptr; + register JSAMPROW color_map = cinfo->colormap[0]; + register JDIMENSION col; + + ptr = dest->pub.buffer[0]; + bufferptr = dest->iobuffer; + for (col = cinfo->output_width; col > 0; col--) { + PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map[GETJSAMPLE(*ptr++)])); + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +/* + * Startup: write the file header. + */ + +METHODDEF(void) +start_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; + + /* Emit file header */ + switch (cinfo->out_color_space) { + case JCS_GRAYSCALE: + /* emit header for raw PGM format */ + fprintf(dest->pub.output_file, "P5\n%ld %ld\n%d\n", + (long) cinfo->output_width, (long) cinfo->output_height, + PPM_MAXVAL); + break; + case JCS_RGB: + /* emit header for raw PPM format */ + fprintf(dest->pub.output_file, "P6\n%ld %ld\n%d\n", + (long) cinfo->output_width, (long) cinfo->output_height, + PPM_MAXVAL); + break; + default: + ERREXIT(cinfo, JERR_PPM_COLORSPACE); + } +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + /* Make sure we wrote the output file OK */ + fflush(dinfo->output_file); + if (ferror(dinfo->output_file)) + ERREXIT(cinfo, JERR_FILE_WRITE); +} + + +/* + * The module selection routine for PPM format output. + */ + +GLOBAL(djpeg_dest_ptr) +jinit_write_ppm (j_decompress_ptr cinfo) +{ + ppm_dest_ptr dest; + + /* Create module interface object, fill in method pointers */ + dest = (ppm_dest_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(ppm_dest_struct)); + dest->pub.start_output = start_output_ppm; + dest->pub.finish_output = finish_output_ppm; + + /* Calculate output image dimensions so we can allocate space */ + jpeg_calc_output_dimensions(cinfo); + + /* Create physical I/O buffer. Note we make this near on a PC. */ + dest->samples_per_row = cinfo->output_width * cinfo->out_color_components; + dest->buffer_width = dest->samples_per_row * (BYTESPERSAMPLE * SIZEOF(char)); + dest->iobuffer = (char *) (*cinfo->mem->alloc_small) + ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width); + + if (cinfo->quantize_colors || BITS_IN_JSAMPLE != 8 || + SIZEOF(JSAMPLE) != SIZEOF(char)) { + /* When quantizing, we need an output buffer for colormap indexes + * that's separate from the physical I/O buffer. We also need a + * separate buffer if pixel format translation must take place. + */ + dest->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, + cinfo->output_width * cinfo->output_components, (JDIMENSION) 1); + dest->pub.buffer_height = 1; + if (! cinfo->quantize_colors) + dest->pub.put_pixel_rows = copy_pixel_rows; + else if (cinfo->out_color_space == JCS_GRAYSCALE) + dest->pub.put_pixel_rows = put_demapped_gray; + else + dest->pub.put_pixel_rows = put_demapped_rgb; + } else { + /* We will fwrite() directly from decompressor output buffer. */ + /* Synthesize a JSAMPARRAY pointer structure */ + /* Cast here implies near->far pointer conversion on PCs */ + dest->pixrow = (JSAMPROW) dest->iobuffer; + dest->pub.buffer = & dest->pixrow; + dest->pub.buffer_height = 1; + dest->pub.put_pixel_rows = put_pixel_rows; + } + + return (djpeg_dest_ptr) dest; +} + +#endif /* PPM_SUPPORTED */ diff --git a/common/jpeg/wrtarga.c b/common/jpeg/wrtarga.c new file mode 100644 index 00000000..cf104d2d --- /dev/null +++ b/common/jpeg/wrtarga.c @@ -0,0 +1,253 @@ +/* + * wrtarga.c + * + * Copyright (C) 1991-1996, Thomas G. Lane. + * This file is part of the Independent JPEG Group's software. + * For conditions of distribution and use, see the accompanying README file. + * + * This file contains routines to write output images in Targa format. + * + * These routines may need modification for non-Unix environments or + * specialized applications. As they stand, they assume output to + * an ordinary stdio stream. + * + * Based on code contributed by Lee Daniel Crocker. + */ + +#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ + +#ifdef TARGA_SUPPORTED + + +/* + * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. + * This is not yet implemented. + */ + +#if BITS_IN_JSAMPLE != 8 + Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ +#endif + +/* + * The output buffer needs to be writable by fwrite(). On PCs, we must + * allocate the buffer in near data space, because we are assuming small-data + * memory model, wherein fwrite() can't reach far memory. If you need to + * process very wide images on a PC, you might have to compile in large-memory + * model, or else replace fwrite() with a putc() loop --- which will be much + * slower. + */ + + +/* Private version of data destination object */ + +typedef struct { + struct djpeg_dest_struct pub; /* public fields */ + + char *iobuffer; /* physical I/O buffer */ + JDIMENSION buffer_width; /* width of one row */ +} tga_dest_struct; + +typedef tga_dest_struct * tga_dest_ptr; + + +LOCAL(void) +write_header (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, int num_colors) +/* Create and write a Targa header */ +{ + char targaheader[18]; + + /* Set unused fields of header to 0 */ + MEMZERO(targaheader, SIZEOF(targaheader)); + + if (num_colors > 0) { + targaheader[1] = 1; /* color map type 1 */ + targaheader[5] = (char) (num_colors & 0xFF); + targaheader[6] = (char) (num_colors >> 8); + targaheader[7] = 24; /* 24 bits per cmap entry */ + } + + targaheader[12] = (char) (cinfo->output_width & 0xFF); + targaheader[13] = (char) (cinfo->output_width >> 8); + targaheader[14] = (char) (cinfo->output_height & 0xFF); + targaheader[15] = (char) (cinfo->output_height >> 8); + targaheader[17] = 0x20; /* Top-down, non-interlaced */ + + if (cinfo->out_color_space == JCS_GRAYSCALE) { + targaheader[2] = 3; /* image type = uncompressed gray-scale */ + targaheader[16] = 8; /* bits per pixel */ + } else { /* must be RGB */ + if (num_colors > 0) { + targaheader[2] = 1; /* image type = colormapped RGB */ + targaheader[16] = 8; + } else { + targaheader[2] = 2; /* image type = uncompressed RGB */ + targaheader[16] = 24; + } + } + + if (JFWRITE(dinfo->output_file, targaheader, 18) != (size_t) 18) + ERREXIT(cinfo, JERR_FILE_WRITE); +} + + +/* + * Write some pixel data. + * In this module rows_supplied will always be 1. + */ + +METHODDEF(void) +put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +/* used for unquantized full-color output */ +{ + tga_dest_ptr dest = (tga_dest_ptr) dinfo; + register JSAMPROW inptr; + register char * outptr; + register JDIMENSION col; + + inptr = dest->pub.buffer[0]; + outptr = dest->iobuffer; + for (col = cinfo->output_width; col > 0; col--) { + outptr[0] = (char) GETJSAMPLE(inptr[2]); /* RGB to BGR order */ + outptr[1] = (char) GETJSAMPLE(inptr[1]); + outptr[2] = (char) GETJSAMPLE(inptr[0]); + inptr += 3, outptr += 3; + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + +METHODDEF(void) +put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +/* used for grayscale OR quantized color output */ +{ + tga_dest_ptr dest = (tga_dest_ptr) dinfo; + register JSAMPROW inptr; + register char * outptr; + register JDIMENSION col; + + inptr = dest->pub.buffer[0]; + outptr = dest->iobuffer; + for (col = cinfo->output_width; col > 0; col--) { + *outptr++ = (char) GETJSAMPLE(*inptr++); + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +/* + * Write some demapped pixel data when color quantization is in effect. + * For Targa, this is only applied to grayscale data. + */ + +METHODDEF(void) +put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, + JDIMENSION rows_supplied) +{ + tga_dest_ptr dest = (tga_dest_ptr) dinfo; + register JSAMPROW inptr; + register char * outptr; + register JSAMPROW color_map0 = cinfo->colormap[0]; + register JDIMENSION col; + + inptr = dest->pub.buffer[0]; + outptr = dest->iobuffer; + for (col = cinfo->output_width; col > 0; col--) { + *outptr++ = (char) GETJSAMPLE(color_map0[GETJSAMPLE(*inptr++)]); + } + (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); +} + + +/* + * Startup: write the file header. + */ + +METHODDEF(void) +start_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + tga_dest_ptr dest = (tga_dest_ptr) dinfo; + int num_colors, i; + FILE *outfile; + + if (cinfo->out_color_space == JCS_GRAYSCALE) { + /* Targa doesn't have a mapped grayscale format, so we will */ + /* demap quantized gray output. Never emit a colormap. */ + write_header(cinfo, dinfo, 0); + if (cinfo->quantize_colors) + dest->pub.put_pixel_rows = put_demapped_gray; + else + dest->pub.put_pixel_rows = put_gray_rows; + } else if (cinfo->out_color_space == JCS_RGB) { + if (cinfo->quantize_colors) { + /* We only support 8-bit colormap indexes, so only 256 colors */ + num_colors = cinfo->actual_number_of_colors; + if (num_colors > 256) + ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, num_colors); + write_header(cinfo, dinfo, num_colors); + /* Write the colormap. Note Targa uses BGR byte order */ + outfile = dest->pub.output_file; + for (i = 0; i < num_colors; i++) { + putc(GETJSAMPLE(cinfo->colormap[2][i]), outfile); + putc(GETJSAMPLE(cinfo->colormap[1][i]), outfile); + putc(GETJSAMPLE(cinfo->colormap[0][i]), outfile); + } + dest->pub.put_pixel_rows = put_gray_rows; + } else { + write_header(cinfo, dinfo, 0); + dest->pub.put_pixel_rows = put_pixel_rows; + } + } else { + ERREXIT(cinfo, JERR_TGA_COLORSPACE); + } +} + + +/* + * Finish up at the end of the file. + */ + +METHODDEF(void) +finish_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) +{ + /* Make sure we wrote the output file OK */ + fflush(dinfo->output_file); + if (ferror(dinfo->output_file)) + ERREXIT(cinfo, JERR_FILE_WRITE); +} + + +/* + * The module selection routine for Targa format output. + */ + +GLOBAL(djpeg_dest_ptr) +jinit_write_targa (j_decompress_ptr cinfo) +{ + tga_dest_ptr dest; + + /* Create module interface object, fill in method pointers */ + dest = (tga_dest_ptr) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + SIZEOF(tga_dest_struct)); + dest->pub.start_output = start_output_tga; + dest->pub.finish_output = finish_output_tga; + + /* Calculate output image dimensions so we can allocate space */ + jpeg_calc_output_dimensions(cinfo); + + /* Create I/O buffer. Note we make this near on a PC. */ + dest->buffer_width = cinfo->output_width * cinfo->output_components; + dest->iobuffer = (char *) + (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + (size_t) (dest->buffer_width * SIZEOF(char))); + + /* Create decompressor output buffer. */ + dest->pub.buffer = (*cinfo->mem->alloc_sarray) + ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width, (JDIMENSION) 1); + dest->pub.buffer_height = 1; + + return (djpeg_dest_ptr) dest; +} + +#endif /* TARGA_SUPPORTED */ |