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* avcodec/qdmc: Mark decoder as init-threadsafeAndreas Rheinhardt2020-12-31
| | | | | | | It already uses ff_thread_once() to initialize its static data. Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avcodec: set AV_CODEC_CAP_CHANNEL_CONF on decoders which set their own channelsHendrik Leppkes2020-12-10
| | | | | | | | | | | | The decoders in this set either have a fixed channel count, or read it from the bitstream, and thus do not require the channel count as external information. Fixes various regressions since 81503ac58a763a36b1f57264013b1e76acb62b68, which requires a valid channel count for decoders which do not set this capability. Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
* avcodec/qdmc: Avoid code duplication when initializing VLCAndreas Rheinhardt2020-12-08
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avcodec/qdmc: Apply offset when creating VLCAndreas Rheinhardt2020-12-08
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avcodec/qdmc: Make tables used to initialize VLCs smallerAndreas Rheinhardt2020-12-08
| | | | | | | | | 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>
* avcodec/qdmc: Don't check for errors for complete VLCsAndreas Rheinhardt2020-11-24
| | | | Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
* avcodec/qdmc: reduce insanely huge tablesPaul B Mahol2020-08-21
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* avcodec/qdmc: Check input space in qdmc_get_vlc()Michael Niedermayer2019-10-12
| | | | | | | | | 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>
* avcodec/qdmc: Fix integer overflows in PRNGMichael Niedermayer2019-06-26
| | | | | | | | 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>
* avcodec/qdmc: check return code of ff_fft_init()Paul B Mahol2018-09-08
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* avcodec: do not use init_static_data on some codecsMuhammad Faiz2018-02-04
| | | | | | | | | | | | | | 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>
* avcodec/qdmc: silence gcc 6.2.0 warningPaul B Mahol2017-02-10
| | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* avcodec: add QDMC decoderPaul B Mahol2017-01-06
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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