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Use size_t for DWA buffersize calculation #901

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merged 2 commits into from
Jan 20, 2021
Merged

Use size_t for DWA buffersize calculation #901

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c3e4595
Use size_t for DWA buffersize calculation
peterhillman Jan 17, 2021
0a68cc7
use Int64 instead of size_t for buffersize calculations
peterhillman Jan 19, 2021
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30 changes: 14 additions & 16 deletions src/lib/OpenEXR/ImfDwaCompressor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2934,8 +2934,8 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)

size_t maxOutBufferSize = 0;
int numLossyDctChans = 0;
int unknownBufferSize = 0;
int rleBufferSize = 0;
size_t unknownBufferSize = 0;
size_t rleBufferSize = 0;

int maxLossyDctAcSize = (int)ceil ((float)numScanLines() / 8.0f) *
(int)ceil ((float)(_max[0] - _min[0] + 1) / 8.0f) *
Expand All @@ -2945,6 +2945,8 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
(int)ceil ((float)(_max[0] - _min[0] + 1) / 8.0f) *
sizeof (unsigned short);

size_t pixelCount = static_cast<size_t>(numScanLines()) * static_cast<size_t>(_max[0] - _min[0] + 1);

for (unsigned int chan = 0; chan < _channelData.size(); ++chan)
{
switch (_channelData[chan].compression)
Expand All @@ -2971,8 +2973,7 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
// of the source data.
//

int rleAmount = 2 * numScanLines() * (_max[0] - _min[0] + 1) *
OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);
size_t rleAmount = 2 * pixelCount * OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);

rleBufferSize += rleAmount;
}
Expand All @@ -2981,8 +2982,7 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)

case UNKNOWN:

unknownBufferSize += numScanLines() * (_max[0] - _min[0] + 1) *
OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);
unknownBufferSize += pixelCount * OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);
break;

default:
Expand All @@ -2999,13 +2999,13 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
// which could take slightly more space
//

maxOutBufferSize += compressBound ((uLongf)rleBufferSize);
maxOutBufferSize += compressBound (rleBufferSize);

//
// And the same goes for the UNKNOWN data
//

maxOutBufferSize += compressBound ((uLongf)unknownBufferSize);
maxOutBufferSize += compressBound (unknownBufferSize);

//
// Allocate a zip/deflate compressor big enought to hold the DC data
Expand Down Expand Up @@ -3072,7 +3072,7 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
_packedDcBuffer = new char[_packedDcBufferSize];
}

if (static_cast<size_t>(rleBufferSize) > _rleBufferSize)
if ( rleBufferSize > _rleBufferSize )
{
_rleBufferSize = rleBufferSize;
if (_rleBuffer != 0)
Expand All @@ -3091,7 +3091,7 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
// all in one swoop (for each compression scheme).
//

int planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
size_t planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
for (int i=0; i<NUM_COMPRESSOR_SCHEMES; ++i)
planarUncBufferSize[i] = 0;

Expand All @@ -3103,14 +3103,12 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
break;

case RLE:
planarUncBufferSize[RLE] +=
numScanLines() * (_max[0] - _min[0] + 1) *
planarUncBufferSize[RLE] += pixelCount *
OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);
break;

case UNKNOWN:
planarUncBufferSize[UNKNOWN] +=
numScanLines() * (_max[0] - _min[0] + 1) *
planarUncBufferSize[UNKNOWN] += pixelCount *
OPENEXR_IMF_NAMESPACE::pixelTypeSize (_channelData[chan].type);
break;

Expand All @@ -3128,12 +3126,12 @@ DwaCompressor::initializeBuffers (size_t &outBufferSize)
if (planarUncBufferSize[UNKNOWN] > 0)
{
planarUncBufferSize[UNKNOWN] =
compressBound ((uLongf)planarUncBufferSize[UNKNOWN]);
compressBound (planarUncBufferSize[UNKNOWN]);
}

for (int i = 0; i < NUM_COMPRESSOR_SCHEMES; ++i)
{
if (static_cast<size_t>(planarUncBufferSize[i]) > _planarUncBufferSize[i])
if ( planarUncBufferSize[i] > _planarUncBufferSize[i])
{
_planarUncBufferSize[i] = planarUncBufferSize[i];
if (_planarUncBuffer[i] != 0)
Expand Down