FFmpeg

Commit Graph

Author	SHA1	Message	Date
Justin Ruggles	d63f6fea50	simplify coefficient decoding Originally committed as revision 9884 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	285bf28c67	merge decoding of coupling channel coefficients and regular channel coefficients Originally committed as revision 9883 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	d7dc7ad05c	split out coupling coefficient reconstruction into a separate function Originally committed as revision 9882 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	dfd57c366f	align array used in mdct. fixes segfault. Originally committed as revision 9848 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	8b60bbbf5b	simplify stereo rematrixing Originally committed as revision 9824 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	b6acc57f88	change 2 fields from context to local variables Originally committed as revision 9823 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	8fbb368d2c	BLOCK_SIZE is not used properly, just use numbers instead to avoid confusion Originally committed as revision 9822 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	7bfd22f25a	remove broken downmixing. will add new implementation later. Originally committed as revision 9821 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	4611b64ec1	simplify snr offset and bit allocation Originally committed as revision 9784 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	e9a3824880	only use sized data types when necessary Originally committed as revision 9783 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	8f58a4c943	set bit allocation parameters directly instead of copying Originally committed as revision 9782 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	e2cd6686fa	use enum value instead of numerical value for acmod Originally committed as revision 9781 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	bc8edb7e53	use consistent data type for exponents. needs to be int8_t to pass to bit allocation. Originally committed as revision 9780 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	878c40a137	change some bit masks to arrays Originally committed as revision 9779 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	bec37145da	cosmetics: indentation Originally committed as revision 9774 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	9fc1ab722e	Use shared AC-3 header parsing. Move some initializations to block parsing function. Originally committed as revision 9773 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	9ef6039043	don't need to synchronize in the decoder. the parser does that already. Originally committed as revision 9772 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	de34875c75	get rid of an ugly macro Originally committed as revision 9771 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	614e9b2424	don't need to define ALT_BITSTREAM_READER Originally committed as revision 9752 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	362664215d	update license header. add copyright for myself. correct and complete the statement about liba52. Originally committed as revision 9751 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	3bb004fcda	revise comment for exponent decoding function Originally committed as revision 9750 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	4415076f55	new implementation of exponent decoding Originally committed as revision 9749 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	d699d38393	cosmetics: indentation Originally committed as revision 9748 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	0ce668015f	remove portions of bit allocation which are no longer needed since they are shared with the encoder Originally committed as revision 9747 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	0de73a46ff	fix the 256-point MDCT Originally committed as revision 9685 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	623b79435d	use shared ac3 bit allocation function Originally committed as revision 9684 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	fa67992dea	no need for the decoder to have the license as a prefix Originally committed as revision 9682 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	76d357fd23	remove a debugging function and variable, and remove the commented-out code which uses them. Originally committed as revision 9681 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	a39532b0d9	ABS -> FFABS Originally committed as revision 9680 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	cc2a8443eb	move some common values to ac3.h and utilize them Originally committed as revision 9679 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	cb503702ee	use random number generator from libavutil Originally committed as revision 9678 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	9d10960194	10l to me. I accidentally removed a word. Originally committed as revision 9677 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	0ec2cc35f7	revise license header for simplicity and consistency Originally committed as revision 9676 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	283614b5fc	make ac3dec.c GPL until violations are fixed Originally committed as revision 9674 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	967d397a6c	AC-3 decoder, soc revision 402, Jul 14 13:45:14 2007 UTC by jbr merge ac3_decoder.h into ac3_decoder.c Originally committed as revision 9673 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Loren Merritt	afb46fc092	AC-3 decoder, soc revision 148, Sep 28 18:38:27 2006 UTC by banan Enable sse imdct, patch by Loren Merrit. Originally committed as revision 9672 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	de17eee70f	AC-3 decoder, soc revision 109, Sep 22 22:42:54 2006 UTC by banan Cosmetics. Originally committed as revision 9671 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	1ea76064b4	AC-3 decoder, soc revision 72, Sep 7 04:20:00 2006 UTC by cloud9 fix short block imdct. Originally committed as revision 9670 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	c7cfc48f37	AC-3 decoder, soc revision 71, Sep 4 09:47:12 2006 UTC by cloud9 Redundant code cleanup. Optimized dither generation. Minor optimization in bit allocation. Comments. Originally committed as revision 9669 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	860fe8c908	AC-3 decoder, soc revision 70, Aug 31 18:04:23 2006 UTC by banan Cosmetics, white space removal. Originally committed as revision 9668 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	6dc5d71f97	AC-3 decoder, soc revision 69, Aug 31 07:12:56 2006 UTC by cloud9 Fix the bugs: 1. The quality of output because of incorrect windowing coefficients. New code for window generation. 2. Dynrng values were reset where dynrng value is present in the first block, but not in the subsequent block. Originally committed as revision 9667 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	d7bcc4adcf	AC-3 decoder, soc revision 58, Aug 19 14:20:45 2006 UTC by cloud9 Further optimizations. Originally committed as revision 9666 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	1d0a6f5209	AC-3 decoder, soc revision 57, Aug 19 12:44:38 2006 UTC by cloud9 Optimization as suggested by Benjamin. Originally committed as revision 9665 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	032732d49d	AC-3 decoder, soc revision 56, Aug 17 14:21:58 2006 UTC by cloud9 Acknowledgements. Originally committed as revision 9664 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	e6bca37c81	AC-3 decoder, soc revision 55, Aug 17 12:25:24 2006 UTC by cloud9 Remove more unnecessary headers. Codec initialization changed to use name => argument notation. Originally committed as revision 9663 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	3ff88ff45a	AC-3 decoder, soc revision 54, Aug 17 09:13:08 2006 UTC by cloud9 Remove unnecessary header files. Originally committed as revision 9662 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	262d8702a9	AC-3 decoder, soc revision 53, Aug 17 08:53:44 2006 UTC by cloud9 Converted the window from double to float. Now sound produced is as good as sound produced by liba52. Originally committed as revision 9661 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	67414da7f7	AC-3 decoder, soc revision 52, Aug 16 22:45:07 2006 UTC by cloud9 Reset the blksw and dithflag to 0 at the begining of each block. Otherwise blockswitching propagates over multiple frames even if block switching is not enabled for that frame. Also reuse rematflg. Originally committed as revision 9660 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	45b0ed13a8	AC-3 decoder, soc revision 48, Aug 16 11:27:49 2006 UTC by cloud9 I realized that the bug was not in the imdct routine but in the get_transform_coeffs. Fixed it. Code now uses the ffmpeg's imdct routines. All the mplayer's ac3 samples are decoded successfully. Also improved downmixing. Now all the downmixing coeffcients for channels are normalized such that the sum of coefficients used to construct the output for single channel never exceeds 1.0. Originally committed as revision 9659 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Justin Ruggles	2fbbd087bb	AC-3 decoder, soc revision 40, Aug 9 00:10:14 2006 UTC by cloud9 More code cleanup. Window is now runtime generated. Fixed the bugs in rematrixing routine and in Decoding AC3 Bitstreams when coupling is in use. Still struggling to find out what affects the quality of the produced sound. Can anybody have a look at the imdct routines do_imdct_256 and do_imdct_512 and tell me whether it is the correctly implemented as described in standard. Originally committed as revision 9658 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago

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323 Commits (30327865f388260e49d40affd1b9c9fc2e20ebfe)