FFmpeg

366MB

Tree: fb0ae037d0

Author	SHA1	Message	Date
Andreas Rheinhardt	fb0ae037d0	avcodec/qdmc: Make tables used to initialize VLCs smaller This is possible by switching to ff_init_vlc_from_lengths() which allows to replace tables of codes of size uint16_t or uint32_t by tables of symbols of size uint8_t; in case there already were symbols tables the savings are even bigger. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	5 years ago
Andreas Rheinhardt	b81e6437ca	avcodec/qdmc: Don't check for errors for complete VLCs Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	5 years ago
Paul B Mahol	d2206f0c5b	avcodec/qdmc: reduce insanely huge tables	5 years ago
Michael Niedermayer	2c7975fe6f	avcodec/qdmc: Check input space in qdmc_get_vlc() Fixes: Timeout (125sec -> 0.4sec) Fixes: 18059/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDMC_fuzzer-5656195825664000 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>	6 years ago
Michael Niedermayer	2921b45a38	avcodec/qdmc: Fix integer overflows in PRNG Fixes: signed integer overflow: 214013 * 2531011 cannot be represented in type 'int' Fixes: 15254/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDMC_fuzzer-5698137026461696 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
Paul B Mahol	d8ad8fd8bd	avcodec/qdmc: check return code of ff_fft_init()	7 years ago
Muhammad Faiz	3caecf7ce8	avcodec: do not use init_static_data on some codecs They don't modify AVCodec, no needs to call it at register. They will be wasteful if these codecs are unused. Instead, call static data initialization at codecs' init. Benchmark: old: 51281340 decicycles in avcodec_register_all, 1 runs, 0 skips new: 6738960 decicycles in avcodec_register_all, 1 runs, 0 skips Reviewed-by: wm4 <nfxjfg@googlemail.com> Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>	8 years ago
Paul B Mahol	ba632efa93	avcodec/qdmc: silence gcc 6.2.0 warning Signed-off-by: Paul B Mahol <onemda@gmail.com>	9 years ago
Paul B Mahol	90ac9f4094	avcodec: add QDMC decoder Signed-off-by: Paul B Mahol <onemda@gmail.com>	9 years ago

9 Commits (fb0ae037d024e96093ccbf8cb366dd1fbbdf9644)