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local VolumetricMaxPooling, parent = torch.class('nn.VolumetricMaxPooling', 'nn.Module')
VolumetricMaxPooling.__version = 2
function VolumetricMaxPooling:__init(kT, kW, kH, dT, dW, dH, padT, padW, padH)
parent.__init(self)
dT = dT or kT
dW = dW or kW
dH = dH or kH
self.kT = kT
self.kH = kH
self.kW = kW
self.dT = dT
self.dW = dW
self.dH = dH
self.padT = padT or 0
self.padW = padW or 0
self.padH = padH or 0
self.ceil_mode = false
self.indices = torch.LongTensor()
end
function VolumetricMaxPooling:ceil()
self.ceil_mode = true
return self
end
function VolumetricMaxPooling:floor()
self.ceil_mode = false
return self
end
function VolumetricMaxPooling:updateOutput(input)
local dims = input:dim()
self.itime = input:size(dims-2)
self.iheight = input:size(dims-1)
self.iwidth = input:size(dims)
self.indices = self.indices or torch.LongTensor()
if torch.typename(input):find('torch%.Cuda.*Tensor') then
self.indices = torch.CudaLongTensor and self.indices:cudaLong() or self.indices
else
self.indices = self.indices:long()
end
input.THNN.VolumetricMaxPooling_updateOutput(
input:cdata(),
self.output:cdata(),
self.indices:cdata(),
self.kT, self.kW, self.kH,
self.dT, self.dW, self.dH,
self.padT, self.padW, self.padH,
self.ceil_mode
)
return self.output
end
function VolumetricMaxPooling:updateGradInput(input, gradOutput)
input.THNN.VolumetricMaxPooling_updateGradInput(
input:cdata(),
gradOutput:cdata(),
self.gradInput:cdata(),
self.indices:cdata(),
self.kT, self.kW, self.kH,
self.dT, self.dW, self.dH,
self.padT, self.padW, self.padH,
self.ceil_mode
)
return self.gradInput
end
function VolumetricMaxPooling:empty()
self:clearState()
end
function VolumetricMaxPooling:clearState()
if self.indices then self.indices:set() end
return parent.clearState(self)
end
function VolumetricMaxPooling:read(file, version)
parent.read(self, file)
if version < 2 then
self.ceil_mode = false
end
end
function VolumetricMaxPooling:__tostring__()
local s = string.format('%s(%dx%dx%d, %d,%d,%d', torch.type(self),
self.kT, self.kW, self.kH, self.dT, self.dW, self.dH)
if (self.padT or self.padW or self.padH) and
(self.padT ~= 0 or self.padW ~= 0 or self.padH ~= 0) then
s = s .. ', ' .. self.padT.. ',' .. self.padW .. ','.. self.padH
end
s = s .. ')'
return s
end
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