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Merge changes Id9890a60,I376d81e6,I1c958838 into main

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* changes:
  GetBackwardReferences: fail on alloc error
  BackwardReferencesHashChainDistanceOnly: fix segfault on OOM
  VP8LEncodeStream: fix segfault on OOM
This commit is contained in:
James Zern 2022-04-06 20:04:25 +00:00 committed by Gerrit Code Review
commit 2de4b05a56
3 changed files with 19 additions and 13 deletions
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2
src/enc/backward_references_cost_enc.c
View File

@ -577,7 +577,7 @@ static int BackwardReferencesHashChainDistanceOnly(
(CostModel*)WebPSafeCalloc(1ULL, cost_model_size);
VP8LColorCache hashers;
CostManager* cost_manager =
(CostManager*)WebPSafeMalloc(1ULL, sizeof(*cost_manager));
(CostManager*)WebPSafeCalloc(1ULL, sizeof(*cost_manager));
int offset_prev = -1, len_prev = -1;
double offset_cost = -1;
int first_offset_is_constant = -1; // initialized with 'impossible' value

19
src/enc/backward_references_enc.c
View File

@ -1007,15 +1007,16 @@ static int GetBackwardReferences(int width, int height,
const VP8LHashChain* const hash_chain_tmp =
(lz77_types_best[i] == kLZ77Standard) ? hash_chain : &hash_chain_box;
const int cache_bits = (i == 1) ? 0 : *cache_bits_best;
if (VP8LBackwardReferencesTraceBackwards(width, height, argb, cache_bits,
hash_chain_tmp, &refs[i],
refs_tmp)) {
double bit_cost_trace;
VP8LHistogramCreate(histo, refs_tmp, cache_bits);
bit_cost_trace = VP8LHistogramEstimateBits(histo);
if (bit_cost_trace < bit_costs_best[i]) {
BackwardRefsSwap(refs_tmp, &refs[i]);
}
double bit_cost_trace;
if (!VP8LBackwardReferencesTraceBackwards(width, height, argb, cache_bits,
hash_chain_tmp, &refs[i],
refs_tmp)) {
goto Error;
}
VP8LHistogramCreate(histo, refs_tmp, cache_bits);
bit_cost_trace = VP8LHistogramEstimateBits(histo);
if (bit_cost_trace < bit_costs_best[i]) {
BackwardRefsSwap(refs_tmp, &refs[i]);
}
}

11
src/enc/vp8l_enc.c
View File

@ -1966,14 +1966,19 @@ int VP8LEncodeStream(const WebPConfig* const config,
const WebPWorkerInterface* const worker_interface = WebPGetWorkerInterface();
int ok_main;
if (enc_main == NULL || !VP8LBitWriterInit(&bw_side, 0)) {
WebPEncodingSetError(picture, VP8_ENC_ERROR_OUT_OF_MEMORY);
VP8LEncoderDelete(enc_main);
return 0;
}
// Avoid "garbage value" error from Clang's static analysis tool.
WebPPictureInit(&picture_side);
// Analyze image (entropy, num_palettes etc)
if (enc_main == NULL ||
!EncoderAnalyze(enc_main, crunch_configs, &num_crunch_configs_main,
if (!EncoderAnalyze(enc_main, crunch_configs, &num_crunch_configs_main,
&red_and_blue_always_zero) ||
!EncoderInit(enc_main) || !VP8LBitWriterInit(&bw_side, 0)) {
!EncoderInit(enc_main)) {
WebPEncodingSetError(picture, VP8_ENC_ERROR_OUT_OF_MEMORY);
goto Error;
}