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38 Commits
Author SHA1 Message Date
Andreas RheinhardtandJames Almer a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
 2021-04-27 10:43:15 -03:00
Paul B Mahol 8e197a9638 avcodec/dxv: make prev variable unsigned 2020-02-22 00:15:43 +01:00
Michael Niedermayer dd9e6d077e avcodec/dxv: Subtract 12 earlier in dxv_decompress_cocg() 
the data_start is after reading 12 bytes and if its subtracted
at the very end the intermediate might overflow

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-08 16:24:58 +02:00
Michael Niedermayer c371e50b4f libavcodec/dxv: Remove redundant seek 
This seeks to the position the previous call to dxv_decompress_opcodes()
positioned us in case of success

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-10-08 16:24:58 +02:00
Michael Niedermayer 97450d2b6a avcodec/dxv: Check op_offset in dxv_decompress_yo() 
Fixes: signed integer overflow: -2147483648 - 8 cannot be represented in type 'int'
Fixes: 17745/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5734628463214592

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-09-30 22:44:43 +02:00
Michael Niedermayer 8c7d5fcfc3 avcodec/dxv: Check op_offset in both directions 
Fixes: signed integer overflow: 61 + 2147483647 cannot be represented in type 'int'
Fixes: 15311/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5742552826773504

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-09-24 12:28:26 +02:00
Michael Niedermayer e96b7a8ba6 avcodec/dxv: Initialize tex_funct to NULL 
Fixes: Various anomalies
Fixes: 14493/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5071018000908288
Fixes: 14630/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5714888963391488

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-07-08 08:21:03 +02:00
Michael Niedermayer 8e520843dd avcodec/dxv: Check op_offset in dxv_decompress_cocg() 
Fixes: signed integer overflow: -2147483648 - 12 cannot be represented in type 'int'
Fixes: 14732/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5735273129836544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-06-05 13:19:59 +02:00
Michael Niedermayer 4daec0c677 avcodec/dxv: Check remaining space in CHECKPOINT() 
Fixes: Timeout (77sec -> 1sec)
Fixes: 13407/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5093143018471424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-03-28 21:32:31 +01:00
Michael Niedermayer 6e0b5d3a20 avcodec/dxv: Correct integer overflow in get_opcodes() 
Fixes: 13099/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-5665598896340992
Fixes: signed integer overflow: 2147483647 + 7 cannot be represented in type 'int'

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-03-09 15:33:53 +01:00
Michael Niedermayer 2bc3811c0d avcodec/dxv: Check that there is enough data to decompress 
Fixes: Timeout
Fixes: 10979/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DXV_fuzzer-6178582203203584

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-08 17:01:03 +01:00
Paul B Mahol 250792be5e avcodec/dxv: add support for "high" quality mode 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2018-04-15 09:27:42 +02:00
Michael Niedermayer d662143f06 avcodec/dxv: Check for end of input in dxv_decompress_dxt5() 
Fixes: Timeout
Fixes: 3291/clusterfuzz-testcase-4630024655208448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-10-04 02:16:11 +02:00
Michael Niedermayer eb50492270 avcodec/dxv: Check remaining bytes in dxv_decompress_raw() 
Fixes: Timeout
Fixes: 2006/clusterfuzz-testcase-minimized-5766515037044736

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2017-06-04 17:51:02 +02:00
Clément Bœsch 549045254c Fix all -Wformat warnings raised by DJGPP 2017-03-29 14:49:29 +02:00
Clément Bœsch 46f4f8ad86 Merge commit '1263b2039eb5aaf1522e9de9f07c787ab30a5f50' 
* commit '1263b2039eb5aaf1522e9de9f07c787ab30a5f50':
  Adjust printf conversion specifiers to match variable signedness

Merged-by: Clément Bœsch <u@pkh.me>
 2017-03-24 13:34:39 +01:00
Clément Bœsch d96f6df3a6 Merge commit '7ebdffc353f3f0827864e8e3461fdc00cc243b14' 
* commit '7ebdffc353f3f0827864e8e3461fdc00cc243b14':
  dxv: Check to make sure we don't overrun buffers on corrupt inputs

Merged-by: Clément Bœsch <u@pkh.me>
 2017-03-15 23:26:10 +01:00
Diego Biurrun 1263b2039e Adjust printf conversion specifiers to match variable signedness 2016-10-28 11:22:21 +02:00
Martin Storsjö 9806b9ab5c Revert "Don't use expressions with side effects in macro parameters" 
This reverts commit 25bacd0a0c.

Since 230b1c070, the bytewise AV_W*() macros only expand their
argument once, so revert to the more readable version of these.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2016-08-02 21:18:12 +03:00
Martin Storsjö 25bacd0a0c Don't use expressions with side effects in macro parameters 
AV_WB32 can be implemented as a macro that expands its parameters
multiple times (in case AV_HAVE_FAST_UNALIGNED isn't set and the
compiler doesn't support GCC attributes); make sure not to read
multiple times from the source in this case.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2016-07-31 22:50:51 +03:00
Martin Storsjö 7ebdffc353 dxv: Check to make sure we don't overrun buffers on corrupt inputs 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2016-07-31 22:50:47 +03:00
Michael Niedermayer 68eb20801d avcodec/dxv: Check idx in dxv_decompress_dxt5() 
Fixes potential out of array read

No testcase available

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-01-05 03:08:09 +01:00
Michael Niedermayer eb8a67de75 avcodec/dxv: Check idx in CHECKPOINT() 
Fixes out of array read

Fixes Ticket5098
Fixes Ticket5099

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-01-05 02:55:49 +01:00
Hendrik Leppkes 9c3c8d2c56 Merge commit 'b2417ee6d1ee0c5e9b170a642d73bdf68908966f' 
* commit 'b2417ee6d1ee0c5e9b170a642d73bdf68908966f':
  dxv: Improve error message

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-26 11:14:31 +02:00
Hendrik Leppkes b4ea8a7305 Merge commit '1bcd4a476ba45a7fdf59d1701b8f0e274418cc32' 
* commit '1bcd4a476ba45a7fdf59d1701b8f0e274418cc32':
  dxv: Support RAW intermediate compression

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-26 11:14:25 +02:00
Hendrik Leppkes f6048e4920 Merge commit 'bbf71d46db3417b43bcbd745cbf235e8e2ff69ae' 
* commit 'bbf71d46db3417b43bcbd745cbf235e8e2ff69ae':
  dxv: Print texture information after header parsing

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-26 11:14:01 +02:00
Hendrik Leppkes 234c7378ca Merge commit 'fb2889691cb7720d2680e188eb6036a35afa2392' 
* commit 'fb2889691cb7720d2680e188eb6036a35afa2392':
  dxv: Support the original first version

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-26 11:13:48 +02:00
Hendrik Leppkes d0aec0aae8 Merge commit '588a5619da0d041e55b365f63d0fa9c72bdbd4d3' 
* commit '588a5619da0d041e55b365f63d0fa9c72bdbd4d3':
  dxv: Parse ancillary encoder information

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-26 11:11:06 +02:00
Vittorio Giovara b2417ee6d1 dxv: Improve error message 2015-09-24 10:57:30 +02:00
Vittorio Giovara 1bcd4a476b dxv: Support RAW intermediate compression 
Sample-Id: boombox64.mov
Reported-by: Aarni Koskela
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-09-24 10:57:25 +02:00
Vittorio Giovara bbf71d46db dxv: Print texture information after header parsing 2015-09-24 10:57:25 +02:00
Vittorio Giovara fb2889691c dxv: Support the original first version 
DXV 1.0 provided DXT1 with LZF only.

Sample-Id: Orange-Strings-07_640_DXV.mov
Reported-by: Carl Eugen Hoyos
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2015-09-24 10:57:20 +02:00
Vittorio Giovara 588a5619da dxv: Parse ancillary encoder information 
Header does not contain the number of channels, but rather the encoder
version, so rename the variable, and read the additional byte.
 2015-09-24 10:56:44 +02:00
Paul B Mahol 92bfc3cd03 avcodec/dxv: remove code that is never reached 
The function is automatically called.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2015-09-15 07:52:15 +00:00
Carl Eugen Hoyos 9b2802f0d3 lavc/dxv: Support more real-world old version samples. 2015-09-08 10:18:16 +02:00
Carl Eugen Hoyos 84c9bf62b4 lavc/dxv: Silence "Multiple ff_thread_finish_setup() calls" warnings. 2015-09-08 10:16:34 +02:00
Hendrik Leppkes d02d208211 Merge commit 'c45fcf30cfab687004ed1cdc06ebaa21f4262a0b' 
* commit 'c45fcf30cfab687004ed1cdc06ebaa21f4262a0b':
  DXV decoder

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2015-09-07 16:07:07 +02:00
Vittorio Giovara c45fcf30cf DXV decoder 
Support all DXDI and DXD3 normal quality videos.
 2015-09-02 22:22:02 +02:00