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path: root/libavcodec/ac3enc_fixed.c
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* dsputil: Split audio operations off into a separate contextDiego Biurrun2014-06-22
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* Rename CONFIG_FFT_FLOAT ---> FFT_FLOATDiego Biurrun2014-01-06
| | | | | The define does not originate from configure, so it should not have a name that is CONFIG_-prefixed.
* dsputil: Move apply_window_int16 to ac3dspDiego Biurrun2013-12-08
| | | | The (optimized) functions are used nowhere else.
* cosmetics: Group .name and .long_name together in codec/format declarationsDiego Biurrun2013-10-03
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* (e)ac3enc: use planar sample formatJustin Ruggles2012-10-06
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* Replace all CODEC_ID_* with AV_CODEC_ID_*Anton Khirnov2012-08-07
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* ac3: don't use different names for option tables in the template file.Ronald S. Bultje2012-07-21
| | | | | The variables which are declared in the teplate file are static and therefore there is no symbol clash.
* Add a float DSP framework to libavutilJustin Ruggles2012-06-08
| | | | Move vector_fmul() from DSPContext to AVFloatDSPContext.
* cosmetics: Align codec declarationsMartin Storsjö2012-04-06
| | | | | | | Also break some long lines, remove codec function placeholder comments and add spaces in sample/pixel format lists. Signed-off-by: Martin Storsjö <martin@martin.st>
* ac3enc: update to AVCodec.encode2()Justin Ruggles2012-03-20
| | | | Update FATE references due to encoder delay.
* (e)ac3enc: select a default bit rate based on the channel layoutJustin Ruggles2012-02-29
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* ac3enc: doxygen update.Justin Ruggles2011-11-02
| | | | | | Add some parameters to existing function documentation. Remove some unneeded documentation. Convert some static function documentation to non-doxygen style.
* ac3enc: Add channel coupling support for the fixed-point AC-3 encoder.Justin Ruggles2011-09-05
| | | | Update FATE references accordingly.
* lavc: use designated initialisers for all codecs.Anton Khirnov2011-07-29
| | | | It's more readable and less prone to breakage.
* eac3enc: use different numbers of blocks per frame to allow higher bitratesJustin Ruggles2011-07-21
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* ac3enc: Mark AVClasses constMartin Storsjö2011-07-15
| | | | Signed-off-by: Martin Storsjö <martin@martin.st>
* ac3enc: merge AC3MDCTContext with AC3EncodeContext.Justin Ruggles2011-07-13
| | | | | | Since both the fixed-point and floating-point encoders use the FFTContext, this no longer needs to be in a separate context. Also, when a short-transform context is added, the same MDCT window will be used.
* ac3enc: clip coefficients after MDCT.Justin Ruggles2011-07-01
| | | | | This ensures that any processing between the MDCT and exponent extraction will be using clipped coefficients.
* ac3enc: move ff_ac3_encode_frame() to ac3enc_template.cJustin Ruggles2011-06-27
| | | | | This avoids using function pointers for quite a few small functions, most of which just call DSP functions.
* ac3enc: merge log2_tab() into normalize_samples()Justin Ruggles2011-06-27
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* ac3enc: split templated float vs. fixed functions into a separate file.Justin Ruggles2011-06-13
| | | | | Function pointers are used for templated functions instead of needlessly duplicating many functions.
* ac3enc: add channel coupling supportJustin Ruggles2011-05-24
| | | | | | | | | Channel coupling is an optional AC-3 feature that increases quality by combining high frequency information from multiple channels into a single channel. The per-channel high frequency information is sent with less accuracy in both the frequency and time domains. This allows more bits to be used for lower frequencies while preserving enough information to reconstruct the high frequencies.
* ac3enc: correct the flipped sign in the ac3_fixed encoderJustin Ruggles2011-04-26
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* ac3: fix memleak in fixed-point encoderJanne Grunau2011-04-25
| | | | caused by typo in mdct_end
* ac3enc: use generic fixed-point mdctMans Rullgard2011-04-03
| | | | | | | | This makes the AC3 encoder use the shared fixed-point MDCT rather than its own implementation. The checksum changes are due to different rounding in the MDCT. Signed-off-by: Mans Rullgard <mans@mansr.com>
* ac3enc: Add codec-specific options for writing AC-3 metadata.Justin Ruggles2011-03-27
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* Add apply_window_int16() to DSPContext with x86-optimized versions and use itJustin Ruggles2011-03-22
| | | | in the ac3_fixed encoder.
* Replace FFmpeg with Libav in licence headersMans Rullgard2011-03-19
| | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
* ac3enc: add SIMD-optimized shifting functions for use with the fixed-point ↵Justin Ruggles2011-03-14
| | | | AC3 encoder.
* ac3enc: do not right-shift fixed-point coefficients in the final MDCT stage.Justin2011-03-14
| | | | | | | | | This increases the accuracy of coefficients, leading to improved quality. Rescaling of the coefficients to full 25-bit accuracy is done rather than offsetting the exponent values. This requires coefficient scaling to be done before determining the rematrixing strategy. Also, the rematrixing strategy calculation must use 64-bit math to prevent overflow due to the higher precision coefficients.
* ac3enc: Add x86-optimized function to speed up log2_tab().Justin Ruggles2011-02-13
| | | | | | | AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute value of each element in an array of int16_t. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
* ac3enc: Remove unneeded clipping of shift amount.Justin Ruggles2011-02-10
| | | | | | | | s->windowed_samples will always have a range of [-32767,32767] due to the window function, so the return value from log2_tab() will always be in the range [0,14]. Signed-off-by: Mans Rullgard <mans@mansr.com>
* ac3enc: remove right shifting from lshift_tab() and make lshift unsigned.Justin Ruggles2011-02-10
| | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
* Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf.Diego Elio Pettenò2011-01-26
| | | | | | | None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com>
* ac3enc: use dsputil functions in apply_window()Justin Ruggles2011-01-22
| | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
* Convert floating-point MDCT coefficients to 24-bit fixed-point all at onceJustin Ruggles2011-01-05
| | | | | | | | instead of doing it separately in 2 different functions. This makes float AC-3 encoding approx. 3-7% faster overall. Also, the coefficient conversion can now be easily SIMD-optimized. Originally committed as revision 26232 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Change the AC-3 encoder to use floating-point.Justin Ruggles2011-01-04
| | | | | | | | Fixed-point AC-3 encoder renamed to ac3_fixed. Regression test acodec-ac3 renamed to acodec-ac3_fixed. Regression test lavf-rm changed to use ac3_fixed encoder. Originally committed as revision 26209 to svn://svn.ffmpeg.org/ffmpeg/trunk
* Move fixed-point parts of the AC-3 encoder to separate files.Justin Ruggles2011-01-03
Originally committed as revision 26206 to svn://svn.ffmpeg.org/ffmpeg/trunk
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