- 30 Dec, 2017 1 commit
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Rostislav Pehlivanov authored
There's no difference apart from which entropy coding functions get called. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 04 Dec, 2017 1 commit
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Rostislav Pehlivanov authored
No point in having the same code twice to do exactly the same thing. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 23 Sep, 2017 1 commit
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Rostislav Pehlivanov authored
This commit implements a psychoacoustic system for the native Opus encoder. Its unlike any other psychoacoustic system known since its capable of using a lookahead to make better choices on how to treat the current frame and how many bits to allocate for it (and future frames). Also, whilst the main bulk of the analysis function has to run in a single thread, the per-frame anaylsis functions does not modify the main psychoacoustic context, so in the future it will be fairly trivial to run those as slice threads. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 18 Jul, 2017 2 commits
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Rostislav Pehlivanov authored
Just put the subtraction in the table. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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Rostislav Pehlivanov authored
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 14 Jul, 2017 1 commit
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Rostislav Pehlivanov authored
Also fixes transient windowing Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 13 Jul, 2017 1 commit
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Rostislav Pehlivanov authored
vector_fmul_reverse requires padding the window at the front Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 10 Jul, 2017 1 commit
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Rostislav Pehlivanov authored
Its only use is to adjust the aac psychoacoustic/filter system which isn't used here. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 16 May, 2017 2 commits
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Rostislav Pehlivanov authored
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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Rostislav Pehlivanov authored
Fixes valgrind warnings, didn't affect anything since it was only used for resynthesis. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 07 Apr, 2017 4 commits
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Rostislav Pehlivanov authored
Saves around 5kbps. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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Rostislav Pehlivanov authored
Apparently its only use is to enable comfort noise/error recovery. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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Rostislav Pehlivanov authored
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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Rostislav Pehlivanov authored
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 27 Mar, 2017 1 commit
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Kyle Swanson authored
Squelches the following compiler warnings: libavcodec/opusenc.c:1051:16: warning: format specifies type 'long' but the argument has type 'long long' [-Wformat] avctx->bit_rate/1000, clipped_rate/1000); ^~~~~~~~~~~~~~~~~~~~ libavcodec/opusenc.c:1051:38: warning: format specifies type 'long' but the argument has type 'long long' [-Wformat] avctx->bit_rate/1000, clipped_rate/1000); ^~~~~~~~~~~~~~~~~
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- 18 Feb, 2017 1 commit
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Rostislav Pehlivanov authored
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 16 Feb, 2017 1 commit
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Michael Niedermayer authored
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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- 15 Feb, 2017 1 commit
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Rostislav Pehlivanov authored
Fixes CID1400584 Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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- 14 Feb, 2017 1 commit
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Rostislav Pehlivanov authored
This marks the first time anyone has written an Opus encoder without using any libopus code. The aim of the encoder is to prove how far the format can go by writing the craziest encoder for it. Right now the encoder's basic, it only supports CBR encoding, however internally every single feature the CELT layer has is implemented (except the pitch pre-filter which needs to work well with the rest of whatever gets implemented). Psychoacoustic and rate control systems are under development. The encoder takes in frames of 120 samples and depending on the value of opus_delay the plan is to use the extra buffered frames as lookahead. Right now the encoder will pick the nearest largest legal frame size and won't use the lookahead, but that'll change once there's a psychoacoustic system. Even though its a pretty basic encoder its already outperforming any other native encoder FFmpeg has by a huge amount. The PVQ search algorithm is faster and more accurate than libopus's algorithm so the encoder's performance is close to that of libopus at zero complexity (libopus has more SIMD). The algorithm might be ported to libopus or other codecs using PVQ in the future. The encoder still has a few minor bugs, like desyncs at ultra low bitrates (below 9kbps with 20ms frames). Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
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