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Issue #1939 - Part 2: Update libwebp source.

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Job Bautista 2022-06-26 12:52:04 +08:00 • committed by roytam1
commit 8038505d6c
127 changed files with 34059 additions and 775 deletions
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23
media/libwebp/demux/demux.c
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@ -24,7 +24,7 @@
#include "../webp/format_constants.h"
#define DMUX_MAJ_VERSION 1
#define DMUX_MIN_VERSION 0
#define DMUX_MIN_VERSION 2
#define DMUX_REV_VERSION 2
typedef struct {
@ -221,12 +221,16 @@ static ParseStatus StoreFrame(int frame_num, uint32_t min_size,
const size_t chunk_start_offset = mem->start_;
const uint32_t fourcc = ReadLE32(mem);
const uint32_t payload_size = ReadLE32(mem);
const uint32_t payload_size_padded = payload_size + (payload_size & 1);
const size_t payload_available = (payload_size_padded > MemDataSize(mem))
? MemDataSize(mem) : payload_size_padded;
const size_t chunk_size = CHUNK_HEADER_SIZE + payload_available;
uint32_t payload_size_padded;
size_t payload_available;
size_t chunk_size;
if (payload_size > MAX_CHUNK_PAYLOAD) return PARSE_ERROR;
payload_size_padded = payload_size + (payload_size & 1);
payload_available = (payload_size_padded > MemDataSize(mem))
? MemDataSize(mem) : payload_size_padded;
chunk_size = CHUNK_HEADER_SIZE + payload_available;
if (SizeIsInvalid(mem, payload_size_padded)) return PARSE_ERROR;
if (payload_size_padded > MemDataSize(mem)) status = PARSE_NEED_MORE_DATA;
@ -312,6 +316,7 @@ static ParseStatus ParseAnimationFrame(
int bits;
MemBuffer* const mem = &dmux->mem_;
Frame* frame;
size_t start_offset;
ParseStatus status =
NewFrame(mem, ANMF_CHUNK_SIZE, frame_chunk_size, &frame);
if (status != PARSE_OK) return status;
@ -332,7 +337,11 @@ static ParseStatus ParseAnimationFrame(
// Store a frame only if the animation flag is set there is some data for
// this frame is available.
start_offset = mem->start_;
status = StoreFrame(dmux->num_frames_ + 1, anmf_payload_size, mem, frame);
if (status != PARSE_ERROR && mem->start_ - start_offset > anmf_payload_size) {
status = PARSE_ERROR;
}
if (status != PARSE_ERROR && is_animation && frame->frame_num_ > 0) {
added_frame = AddFrame(dmux, frame);
if (added_frame) {
@ -446,9 +455,11 @@ static ParseStatus ParseVP8XChunks(WebPDemuxer* const dmux) {
const size_t chunk_start_offset = mem->start_;
const uint32_t fourcc = ReadLE32(mem);
const uint32_t chunk_size = ReadLE32(mem);
const uint32_t chunk_size_padded = chunk_size + (chunk_size & 1);
uint32_t chunk_size_padded;
if (chunk_size > MAX_CHUNK_PAYLOAD) return PARSE_ERROR;
chunk_size_padded = chunk_size + (chunk_size & 1);
if (SizeIsInvalid(mem, chunk_size_padded)) return PARSE_ERROR;
switch (fourcc) {