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Rectify the Chunk parsing logic.

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For odd-sized chunk-payload, there's one Byte padding at the end to make the
next chunk start at even-address. The chunk-skip logic needs to be updated to
handle such cases.

Change-Id: I8939ed07584a6195092fbe703eb0ea711fa5f153
This commit is contained in:
Vikas Arora 2011-10-31 04:38:25 +00:00 committed by James Zern
parent b8634f7d8f
commit f07b2138cd
1 changed files with 2 additions and 1 deletions
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3
src/dec/webp.c
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@ -131,7 +131,8 @@ VP8StatusCode WebPParseOptionalChunks(const uint8_t** data, uint32_t* data_size,
}
chunk_size = get_le32(buf + TAG_SIZE);
cur_skip_size = CHUNK_HEADER_SIZE + chunk_size;
// For odd-sized chunk-payload, there's one Byte padding at the end.
cur_skip_size = (CHUNK_HEADER_SIZE + chunk_size + 1) & ~1;
// Check that total bytes skipped along with current chunk size
// does not exceed riff_size.