dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2025-02-13 15:32:53 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Rectify the Chunk parsing logic.

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/dec/webp.c
View File

@ -131,7 +131,8 @@ VP8StatusCode WebPParseOptionalChunks(const uint8_t** data, uint32_t* data_size,
} }
chunk_size = get_le32(buf + TAG_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 // Check that total bytes skipped along with current chunk size
// does not exceed riff_size. // does not exceed riff_size.