FFmpeg

Commit Graph

Author	SHA1	Message	Date
Justin Ruggles	38dae9c3a6	downmix before imdct unless different size transforms are used. about 20% faster 5.1-to-stereo downmixing. Originally committed as revision 12397 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	d8870f120e	use scale factor instead of sum for downmix level adjustment. avoids division inside downmix loop. 7% faster 5.1-to-stereo downmixing. Originally committed as revision 12287 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	9d10e6e6c0	pre-calculate downmix coefficient sums. 2% faster 5.1-to-stereo downmixing. Originally committed as revision 12286 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	a4de6dd2c1	Use 24-bit fixed-point transform coefficients until just before MDCT. This gives 7% faster decoding on average. Originally committed as revision 12284 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Robert Swain	3ed546fe52	Add variable alpha and size of half window for Kaiser-Bessel Derived window generation. Hard code Bessel I0 approximation iterations to 50. See thread for discussion: [FFmpeg-devel] [PATCH] Move Kaiser-Bessel Derived window to mdct.c Started on the 2008/01/10 Originally committed as revision 11520 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Robert Swain	4eb7a735cb	Make the Kaiser-Bessel window generator a common function Patch by Robert Swain, robert d swain a gmail d com Originally committed as revision 11514 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	f34b221bd2	used defined name for testing error resilience level Originally committed as revision 11478 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	f0b3a7ba12	split out init of downmix coeffs into a separate function that can be called only when needed Originally committed as revision 11441 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	82a6c4811a	remove unneeded variable from AC3DecodeContext Originally committed as revision 11439 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	4bc829bb8f	make sure that the last coupling band stops at the end of the coupling range Originally committed as revision 11438 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	b02fbf7536	fix phase flag processing for the case when coupling coordinates are reused for the right channel, but new for the left channel Originally committed as revision 11436 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	646800f79c	move E-AC3 header parsing to ff_ac3_parse_header() Originally committed as revision 11420 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	86ad4c7e1b	remove unneeded variables from AC3HeaderInfo Originally committed as revision 11419 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	2816d32310	cosmetics: indentation Originally committed as revision 11416 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	95283c1701	check for request_channels at codec init Originally committed as revision 11415 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Aurelien Jacobs	3abe5fbdc4	improve CRC API - don't export any global var - provide either generated or hardcoded tables Originally committed as revision 11409 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	7564658bbc	cosmetics: indentation and add a TODO comment Originally committed as revision 11389 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	471db688c6	only check ac3 crc if AVCodecContext.error_resilience > 0 Originally committed as revision 11388 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	d6939960d5	add crc check to ac3 decoder Originally committed as revision 11379 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	12eaa3b760	simplify Originally committed as revision 11360 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	b35c67e58b	pass an AC3DecodeContext to ac3_downmix() instead of multiple arguments Originally committed as revision 11359 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	866181e5e8	cosmetics: rename sampling_rate to sample_rate Originally committed as revision 11358 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	0345fade94	do not need to cast a (void *) Originally committed as revision 11357 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	1b70d88b7a	cosmetics: vertical realignment after last commit Originally committed as revision 11356 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	d802d7ca12	cosmetics: rename all AC3DecodeContext variables from ctx to s Originally committed as revision 11355 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	23c8cb89c9	cosmetics: rename GetBitContext gb to gbc Originally committed as revision 11354 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	005ab694ae	remove unused context variable Originally committed as revision 11353 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	1408352ada	Add option for user to scale the amount of dynamic range compression which is applied by the audio decoder, and use that option in the AC3 decoder. Originally committed as revision 11280 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	03726b7042	Skip dialog normalization. It shouldn't be used by the decoder, and there is not currently a clean way to pass the value to the user. Originally committed as revision 11246 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	224bc440b2	Revert commit made in revision 11228. I'm getting some strange results in the downmixed output that I can't quite figure out. Originally committed as revision 11245 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	b40211ff67	downmix before the IMDCT if no block switching is used Originally committed as revision 11228 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Andreas Öman	6708eefe55	Make AC3 decoder honor avctx->request_channels Originally committed as revision 11220 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	e2270b4e1e	cosmetics: rename ac3 decoder variables Originally committed as revision 11197 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	e59cc20593	cosmetics: rename common ac3 variables Originally committed as revision 11196 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	5ce2134258	cosmetics: rename ac3 bit allocation variables Originally committed as revision 11194 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	66ecf18e38	cosmetics: rename ac3 tables Originally committed as revision 11193 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	56cc85a068	Misc spelling fixes, prefer American over British English. Originally committed as revision 11126 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Justin Ruggles	a135bea507	skip incomplete frames Originally committed as revision 10497 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	3df880934e	better AC3 header error reporting Originally committed as revision 10496 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	d5b7144e1f	fix random dithering of zero-bit mantissas Originally committed as revision 10495 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	bfcf690c68	cosmetics: rename variables. tbl->tab for consistency with other AC3 tables Originally committed as revision 10494 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	396a6ee50e	fix decoding of DolbyNet AC3 Originally committed as revision 10493 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	222ae64c3d	cosmetics: vertical alignment Originally committed as revision 10002 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	5066f51502	comments modification: add, clean up, Doxygenize, and reword Originally committed as revision 10001 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	f5cefb21d5	cosmetics: blank lines, remove some comments Originally committed as revision 9955 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	82758fd690	add pointer to the parent context for use with av_log() Originally committed as revision 9954 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	77416325cb	use array for dynamic range scaling factors Originally committed as revision 9953 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	01f354531d	add dialogue normalization Originally committed as revision 9948 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	3bbb0bf82c	add support for downmixing to stereo or mono Originally committed as revision 9916 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	4e09232070	use dsputil for float to signed 16-bit sample conversion Originally committed as revision 9914 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago

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286 Commits (c99baf05c3c2a4b441a1d8270f440247ba3af3d9)