FFmpeg

Commit Graph

Author	SHA1	Message	Date
Diego Biurrun	4958f35a2e	dsputil: Move apply_window_int16 to ac3dsp The (optimized) functions are used nowhere else.	11 years ago
Diego Biurrun	b2bed9325d	cosmetics: Group .name and .long_name together in codec/format declarations	11 years ago
Justin Ruggles	b1540fc884	(e)ac3enc: use planar sample format	12 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	13 years ago
Ronald S. Bultje	b170b323e3	ac3: don't use different names for option tables in the template file. The variables which are declared in the teplate file are static and therefore there is no symbol clash.	13 years ago
Justin Ruggles	d5a7229ba4	Add a float DSP framework to libavutil Move vector_fmul() from DSPContext to AVFloatDSPContext.	13 years ago
Martin Storsjö	00c3b67b8a	cosmetics: Align codec declarations 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>	13 years ago
Justin Ruggles	aa872af5e3	ac3enc: update to AVCodec.encode2() Update FATE references due to encoder delay.	13 years ago
Justin Ruggles	4e99501f62	(e)ac3enc: select a default bit rate based on the channel layout	13 years ago
Justin Ruggles	c2d9a65bc0	ac3enc: doxygen update. Add some parameters to existing function documentation. Remove some unneeded documentation. Convert some static function documentation to non-doxygen style.	13 years ago
Justin Ruggles	ae264bb29b	ac3enc: Add channel coupling support for the fixed-point AC-3 encoder. Update FATE references accordingly.	14 years ago
Anton Khirnov	ec6402b7c5	lavc: use designated initialisers for all codecs. It's more readable and less prone to breakage.	14 years ago
Justin Ruggles	be7bd626c4	eac3enc: use different numbers of blocks per frame to allow higher bitrates	14 years ago
Martin Storsjö	ca5d57ef8a	ac3enc: Mark AVClasses const Signed-off-by: Martin Storsjö <martin@martin.st>	14 years ago
Justin Ruggles	b5849f7709	ac3enc: merge AC3MDCTContext with AC3EncodeContext. 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.	14 years ago
Justin Ruggles	523b7eba19	ac3enc: clip coefficients after MDCT. This ensures that any processing between the MDCT and exponent extraction will be using clipped coefficients.	14 years ago
Justin Ruggles	8683c6a638	ac3enc: move ff_ac3_encode_frame() to ac3enc_template.c This avoids using function pointers for quite a few small functions, most of which just call DSP functions.	14 years ago
Justin Ruggles	668afae438	ac3enc: merge log2_tab() into normalize_samples()	14 years ago
Justin Ruggles	e0cc66df61	ac3enc: split templated float vs. fixed functions into a separate file. Function pointers are used for templated functions instead of needlessly duplicating many functions.	14 years ago
Justin Ruggles	7f3a7b5c40	ac3enc: add channel coupling support 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.	14 years ago
Justin Ruggles	79ee8977c2	ac3enc: correct the flipped sign in the ac3_fixed encoder	14 years ago
Janne Grunau	6ad2bafcfd	ac3: fix memleak in fixed-point encoder caused by typo in mdct_end	14 years ago
Mans Rullgard	79997def65	ac3enc: use generic fixed-point mdct 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>	14 years ago
Justin Ruggles	991f3de1bb	ac3enc: Add codec-specific options for writing AC-3 metadata.	14 years ago
Justin Ruggles	e6e9823488	Add apply_window_int16() to DSPContext with x86-optimized versions and use it in the ac3_fixed encoder.	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	f1efbca5e9	ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder.	14 years ago
Justin	323e6fead0	ac3enc: do not right-shift fixed-point coefficients in the final MDCT stage. 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.	14 years ago
Justin Ruggles	fbb6b49dab	ac3enc: Add x86-optimized function to speed up log2_tab(). 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>	14 years ago
Justin Ruggles	626264b11b	ac3enc: Remove unneeded clipping of shift amount. 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>	14 years ago
Justin Ruggles	d4582889ee	ac3enc: remove right shifting from lshift_tab() and make lshift unsigned. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Diego Elio Pettenò	d36beb3f69	Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	3b924294ea	ac3enc: use dsputil functions in apply_window() Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	ac05f9030e	Convert floating-point MDCT coefficients to 24-bit fixed-point all at once 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	14 years ago
Justin Ruggles	6fd96d1a85	Change the AC-3 encoder to use floating-point. 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	14 years ago
Justin Ruggles	ad6b2c1f6d	Move fixed-point parts of the AC-3 encoder to separate files. Originally committed as revision 26206 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago

36 Commits (a2eeed619de3bb257e82f0e06d1a580101bce54c)