FFmpeg

Commit Graph

Author	SHA1	Message	Date
Andreas Rheinhardt	2d764069be	avcodec/vlc: Use structure instead of VLC_TYPE array as VLC element In C, qualifiers for arrays are broken: const VLC_TYPE (foo)[2] is a pointer to an array of two const VLC_TYPE elements and unfortunately this is not compatible with a pointer to a const array of two VLC_TYPE, because the latter does not exist as array types are never qualified (the qualifier applies to the base type instead). This is the reason why get_vlc2() doesn't accept a const VLC table despite not modifying the table at all, as there is no automatic conversion from VLC_TYPE ()[2] to const VLC_TYPE (*)[2]. Fix this by using a structure VLCElem for the VLC table. This also has the advantage of making it clear which element is which. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	c3ff716808	avcodec/h264_*: Remove unnecessary internal.h inclusions Also remove some other unnecessary headers while at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Andreas Rheinhardt	25c8507818	Remove/replace some unnecessary avcodec.h inclusions Also remove other unnecessary headers and include headers directly while at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Andreas Rheinhardt	a581370f54	avcodec/h264_cavlc: Reindent after the previous commit Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Andreas Rheinhardt	b41e4f6187	avcodec/h264_cavlc: Remove redundant check The only caller to ff_h264_decode_init_vlc() already uses ff_thread_once() for the call; ergo the check via a simple int with static storage duration in ff_h264_decode_init_vlc() is redundant. And if it were not redundant, it would be a potential for data races. So remove it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	4 years ago
Michael Niedermayer	b789ebf681	avcodec/h264_cavlc: Fix integer overflows with motion vector residual addition Fixes: signed integer overflow: 14 + 2147483647 cannot be represented in type 'int' Fixes: 14794/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5677380695228416 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Michael Niedermayer	f72b9904fe	avcodec/h264_cavlc: Check mb_skip_run Fixes: 10300/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-6292205497483264 Fixes: signed integer overflow: -2147483648 - 1 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>	6 years ago
Xiaohan Wang	71f39de2a5	avcodec/h264_cavlc: Set valid qscale value in ff_h264_decode_mb_cavlc() When ff_h264_decode_mb_cavlc() failed due to wrong sl->qscale values, e.g. dquant out of range, set the qscale to be a valid value before returning -1 and exiting the function. The qscale value can be used later e.g. in loop filter. BUG=806122 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	7 years ago
Anton Mitrofanov	70946e6059	h264dec: Fix mix of lossless and lossy MBs decoding CC: libav-stable@libav.org Signed-off-by: Anton Khirnov <anton@khirnov.net>	7 years ago
Wan-Teh Chang	99c5ac2039	avcodec/h264: Declare the local variable decode_chroma as const. ff_h264_decode_mb_cabac() and ff_h264_decode_mb_cavlc() are very long functions. Declaring decode_chroma as const makes it clear the variable doesn't change after initialization. Signed-off-by: Wan-Teh Chang <wtc@google.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	7 years ago
Anton Mitrofanov	cf231b68da	avcodec/h264: Fix mix of lossless and lossy MBs decoding Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	8 years ago
Michael Niedermayer	0e87c07d87	avcodec/h264_cavlc: Fix runtime error: index -1 out of bounds for type 'VLC [6]' Fixes: 1639/clusterfuzz-testcase-minimized-5693801463021568 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
Michael Niedermayer	54e1b62ee2	avcodec/h264_cavlc: Fix runtime error: index -1 out of bounds for type 'VLC [15] Fixes: 1513/clusterfuzz-testcase-minimized-6246484833992704 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
Michael Niedermayer	fc8cff96ed	avcodec/h264_cavlc: Fix undefined behavior on qscale overflow Fixes: 1214/clusterfuzz-testcase-minimized-6130606599569408 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	8 years ago
Anton Khirnov	522d850e68	h264_cavlc: check the value of run_before Section 9.2.3.2 of the spec implies that run_before must not be larger than zeros_left. Fixes invalid reads with corrupted files. CC: libav-stable@libav.org Bug-Id: 1000 Found-By: Kamil Frankowicz	8 years ago
Diego Biurrun	d4c2103bd3	golomb: Convert to the new bitstream reader	8 years ago
Anton Khirnov	9df889a5f1	h264: rename h264.[ch] to h264dec.[ch] This is more consistent with the naming of other decoders.	9 years ago
James Almer	94011f994a	avodec/h264dec: fix compilation with -DTRACE Signed-off-by: James Almer <jamrial@gmail.com>	9 years ago
Anton Khirnov	6e92181bf8	h264: pass just the PPS to get_chroma_qp() It does not need the whole context. This will simplify the following commit.	9 years ago
Diego Biurrun	52567e8198	get_bits: Drop some TRACE-level debug code It will not be provided by the new bit reader anyway.	9 years ago
Vittorio Giovara	41ed7ab45f	cosmetics: Fix spelling mistakes Signed-off-by: Diego Biurrun <diego@biurrun.de>	9 years ago
Diego Biurrun	c11c693acc	h264: Drop broken trace debug output	9 years ago
Anton Khirnov	3176217c60	h264: decouple h264_ps from the h264 decoder Make the SPS/PPS parsing independent of the H264Context, to allow decoupling the parser from the decoder. The change is modelled after the one done earlier for HEVC. Move the dequant buffers to the PPS to avoid complex checks whether they changed and an expensive copy for frame threads.	9 years ago
Anton Khirnov	ecc31f6b08	h264: move ff_h264_check_intra[4x4]_pred_mode() to h264_parse It is shared with svq3.	9 years ago
Diego Biurrun	a7da517f6a	h264data: Move all data tables from a header to a .c file	9 years ago
Diego Biurrun	6b96d2dcda	cosmetics: Drop particularly redundant silly comments	9 years ago
Vittorio Giovara	6a85dfc830	lavc: Replace av_dlog and tprintf with internal macros	10 years ago
Michael Niedermayer	797ba4d53b	avcodec/h264_cavlc: Drop local_ref_count This basically switches to the implementation from `f6f7d15041` which seems faster Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Anton Khirnov	7505c8dfba	h264_cavlc: constify all uses of H264Context All the variables modified by this code are either per-MB arrays or have been moved to the per-slice context	10 years ago
Anton Khirnov	e9b2383bf8	h264: move mb_mbaff into the per-slice context	10 years ago
Anton Khirnov	bc98e8c0e0	h264: move mb_field_decoding_flag into the per-slice context	10 years ago
Anton Khirnov	f42485dbce	h264: use a separate GetBitContext for slice data	10 years ago
Anton Khirnov	404a416d4b	h264: remove some remnants of data partitioning	10 years ago
Anton Khirnov	d4d9068cdf	h264: move mb_{x,y} into the per-slice context	10 years ago
Anton Khirnov	0edbe6faa7	h264: move mb_xy into the per-slice context	10 years ago
Anton Khirnov	47a0d39350	h264: move mb_skip_run into the per-slice context	10 years ago
Anton Khirnov	e7226984ac	h264: move [{top,left}_]cbp into the per-slice context	10 years ago
Anton Khirnov	bf03a878a7	h264: move mb[_{padding,luma_dc}] into the per-slice context	10 years ago
Anton Khirnov	b063582e0c	h264: move intra_pcm_ptr into the per-slice context	10 years ago
Anton Khirnov	95eb35f305	h264: move the ref lists variables into the per-slice context	10 years ago
Anton Khirnov	ed451a08a4	h264: move sub_mb_type into the per-slice context	10 years ago
Anton Khirnov	56febc993b	h264: move the slice type variables into the per-slice context	10 years ago
Anton Khirnov	e6287f077c	h264: move {mv,ref}_cache into the per-slice context	10 years ago
Anton Khirnov	f69574cf7a	h264: move non_zero_count_cache into the per-slice context	10 years ago
Anton Khirnov	64c81b2cd0	h264: move *_samples_available into the per-slice context	10 years ago
Anton Khirnov	7d8154edd5	h264: move intra4x4_pred_mode[_cache] into the per-slice context	10 years ago
Anton Khirnov	8b00f4df20	h264: move some neighbour information into the per-slice context	10 years ago
Anton Khirnov	4bd5ac200d	h264: move {chroma,intra16x16}_pred_mode into the per-slice context	10 years ago
Anton Khirnov	5355ed6b20	h264: move {prev,next}_mb_skipped into the per-slice context	10 years ago
Anton Khirnov	d231e84b06	h264: move the quantizers into the per-slice context	10 years ago

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176 Commits (5828e8209f48f206c42b69e314a6988b50e98924)