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N
ffmpeg-0.6.3
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${ noResults }
8 Commits (5d3addb937946eca5391e40b5e6308e74ac6f77b)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Andreas Cadhalpun
|
76d4c62734 |
webp: Make sure enough bytes are available
Every chunk needs at least 8 bytes for chunk_type and chunk_size. Prevent a possible infinite loop. CC: libav-stable@libav.org Signed-off-by: Luca Barbato <lu_zero@gentoo.org> |
10 years ago |
|
Andreas Cadhalpun
|
30e6abd1a8 |
webp: ensure that each transform is only used once
According to the WebP Lossless Bitstream Specification "each transform is allowed to be used only once". If a transform is more than once this can lead to memory corruption. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net> |
10 years ago |
|
Andreas Cadhalpun
|
4f2ee9daee |
webp: validate the distance prefix code
According to the WebP Lossless Bitstream Specification the highest allowed value for a prefix code is 39. If prefix_code is too large, the calculated extra_bits has an invalid value and triggers an assertion in get_bits. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net> |
10 years ago |
Justin Ruggles
|
c6698dfe7c |
webpdec: Fix decoding of the huffman group indices.
Per the specification, "The red and green components of a pixel define the meta Huffman code used in a particular block of the ARGB image." |
11 years ago |
|
Justin Ruggles
|
d085f80fa1 |
webp: add a special case for a huffman table with only 1 symbol
The vlc reader cannot handle 0-bit huffman codes. For most situations WebP uses the "simple" huffman coding for this case, but that will only handle symbols up to 255. For the LZ77 distance codes, larger symbol values are needed, so it can happen in rare cases that a normal huffman table is used that only has a single symbol. |
11 years ago |
|
Justin Ruggles
|
f51e3a1971 |
webp: do not call av_frame_free() on the user-provided frame
Fixes double-free on error. |
11 years ago |
Anton Khirnov
|
0a9e94bba8 |
webp: stop using deprecated avcodec_set_dimensions
|
11 years ago |
|
Justin Ruggles
|
c4bfa09807 |
Add a WebP decoder
Container and lossy decoding by Aneesh Dogra <aneesh@sugarlabs.org> Lossless decoding by Justin Ruggles <justin.ruggles@gmail.com> |
11 years ago |