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Support for unknown chunks in mux library

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WebPMuxSetChunk/WebPMuxGetChunk/WebPMuxDeleteChunk now correctly handle
unknown chunks.

Change-Id: I2b75106ef08260f2bce03eb1782924b620643746
This commit is contained in:
Urvang Joshi
2013-07-17 16:34:50 -07:00
parent 7d60bbc6d9
commit faa4b07eda
4 changed files with 24 additions and 56 deletions
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9
src/mux/muxread.c
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@ -237,7 +237,6 @@ WebPMux* WebPMuxCreateInternal(const WebPData* bitstream, int copy_data,
if (wpi->is_partial_) goto Err; // Encountered a non-image chunk before
// getting all chunks of an image.
chunk_list = MuxGetChunkListFromId(mux, id); // List to add this chunk.
if (chunk_list == NULL) chunk_list = &mux->unknown_;
if (ChunkSetNth(&chunk, chunk_list, 0) != WEBP_MUX_OK) goto Err;
break;
}
@ -502,12 +501,8 @@ WebPMuxError WebPMuxNumChunks(const WebPMux* mux,
*num_elements = MuxImageCount(mux->images_, id);
} else {
WebPChunk* const* chunk_list = MuxGetChunkListFromId(mux, id);
if (chunk_list == NULL) {
*num_elements = 0;
} else {
const CHUNK_INDEX idx = ChunkGetIndexFromId(id);
*num_elements = CountChunks(*chunk_list, kChunks[idx].tag);
}
const CHUNK_INDEX idx = ChunkGetIndexFromId(id);
*num_elements = CountChunks(*chunk_list, kChunks[idx].tag);
}
return WEBP_MUX_OK;