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260 Commits

Author SHA1 Message Date
Justin Ruggles
ae04de316f eac3dec: revert commit r18860. keep the AHT IDCT 24-bit. will make AHT GAQ 
dequantization 24-bit in a separate commit.

Originally committed as revision 18887 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-21 00:09:23 +00:00
Diego Biurrun
1754fe4d30 The AC-3 decoder is now LGPL. Exchange the license header and change references 
in the build system and documentation that mark it as GPL.

Originally committed as revision 18876 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-19 22:58:09 +00:00
Jason Garrett-Glaser
d869a460db LGPL version of ac3_decode_transform_coeffs_ch, ~12.4% faster. 
Originally committed as revision 18875 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-19 21:29:21 +00:00
Justin Ruggles
9a7a71ed4c eac3dec: use 16-bit pre-mantissas instead of 24-bit in AHT decoding. it is 
simpler and also fixes a bug in GAQ dequantization.

Originally committed as revision 18860 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-17 06:53:24 +00:00
Justin Ruggles
1ac7d1ac50 ac3dec: fix coupling range check. the start subband must be less than 
the end subband.

Originally committed as revision 18857 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-16 17:02:44 +00:00
Siarhei Siamashka
7d485f165f Support for getting (i)MDCT output multiplied by a constant scaling factor. 
Scaling (i)MDCT output has no runtime overhead and can be used to improve
performance of audio codecs. All the changes are only needed in
'ff_mdct_init' function and slow down initialization a bit.

Originally committed as revision 18855 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-16 14:17:08 +00:00
Justin Ruggles
778bc09bbe cosmetics: line wrap and vertical alignment 
Originally committed as revision 18752 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-06 01:48:14 +00:00
Justin Ruggles
396b73c7f7 ac3dec: Remove unneeded context variable, num_cpl_subbands. It is also 
not needed for spectral extension or enhanced coupling since it is
redundant information, so I am removing it from decode_band_structure()
as well.

Originally committed as revision 18751 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-06 01:47:34 +00:00
Justin Ruggles
52dc3fc83d cosmetics: indentation after last commit 
Originally committed as revision 18750 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-05 23:39:10 +00:00
Justin Ruggles
13ec942869 ac3dec: move channel remapping to outside of block loop 
Originally committed as revision 18749 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-05 23:38:12 +00:00
Justin Ruggles
bfeca7beb6 Add channel layout support to the AC-3 decoder and AC-3 parser. 
Originally committed as revision 18622 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-19 15:05:32 +00:00
Justin Ruggles
95f3019a51 ac3dec: reorder output channels to SMPTE channel order 
Originally committed as revision 18542 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-17 08:43:04 +00:00
Thilo Borgmann
7a00bbad21 Implement avcodec_decode_video2(), _audio3() and _subtitle2() which takes an 
AVPacket argument rather than a const uint8_t *buf + int buf_size. This allows
passing of packet-specific flags from demuxer to decoder, such as the keyframe
flag, which appears necessary to playback corePNG P-frames.

Patch by Thilo Borgmann thilo.borgmann googlemail com, see also the thread
"Google Summer of Code participation" on the mailinglist.

Originally committed as revision 18351 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-04-07 15:59:50 +00:00
Diego Biurrun
406792e7b0 cosmetics: Remove pointless period after copyright statement non-sentences. 
Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-19 15:46:40 +00:00
Alex Converse
11d6f38cc9 Factorise enum of AC3 error types to be usable by AAC in the ADTS patch that 
will follow

Patch by Alex Converse ( alex converse gmail com )

Originally committed as revision 16479 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-01-07 18:10:10 +00:00
Stefano Sabatini
dbbec0c2f2 Make av_log_missing_feature an internal function, and change its name 
to ff_log_missing_feature.

Originally committed as revision 16037 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 21:21:38 +00:00
Justin Ruggles
20e047262f cosmetics: alignment after last commit 
Originally committed as revision 16035 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 03:15:10 +00:00
Justin Ruggles
72a6244b5d ac3: detect dba errors and prevent writing past end of array 
Originally committed as revision 16034 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-08 03:13:20 +00:00
Justin Ruggles
2ceccf045c ac3dec: simplify exponent bounds checking 
Originally committed as revision 16022 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 16:33:16 +00:00
Justin Ruggles
96f229d6c0 ac3dec: unroll inner loop in exponent decoding. 46% faster decode_exponents(). 
Originally committed as revision 16018 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:46:23 +00:00
Justin Ruggles
806703243e cosmetics: vertical alignment 
Originally committed as revision 16017 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:38:21 +00:00
Justin Ruggles
1cdd567f31 cosmetics: reindent after last commit 
Originally committed as revision 16016 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:37:04 +00:00
Justin Ruggles
ce7d842fa6 ac3dec: detect out-of-range exponents 
Originally committed as revision 16015 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-06 15:36:23 +00:00
Justin Ruggles
f23dc1e1f9 silence gcc warning: ‘n_bands’ may be used uninitialized 
Originally committed as revision 15999 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-04 02:56:25 +00:00
Justin Ruggles
75b53b2123 ac3dec: use uint8_t for band sizes 
Originally committed as revision 15998 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-04 02:51:39 +00:00
Justin Ruggles
af2272b209 ac3dec: skip decoding and use error concealment for remaining blocks in 
the frame after an error occurs.

Originally committed as revision 15987 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-12-03 03:34:31 +00:00
Justin Ruggles
e202cc2580 revert r15812 (E-AC-3 Spectral Extension) pending further review 
Originally committed as revision 15818 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 22:38:38 +00:00
Justin Ruggles
3f3ca7ac07 cosmetics: vertical alignment 
Originally committed as revision 15815 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:28 +00:00
Justin Ruggles
c763f86728 silence a gcc warning about using an uninitialized variable 
Originally committed as revision 15814 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:24 +00:00
Justin Ruggles
66561189a1 cosmetics: indentation 
Originally committed as revision 15813 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:18 +00:00
Justin Ruggles
0cc51734b2 add support for spectral extension 
Originally committed as revision 15812 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:13 +00:00
Justin Ruggles
0c5d750df9 add a generic function to decode banding structure for coupling, spectral 
extension, or enhanced coupling

Originally committed as revision 15811 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:07 +00:00
Justin Ruggles
6c6f927289 add a line break in error message text 
Originally committed as revision 15810 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:18:01 +00:00
Justin Ruggles
6ee6d068f7 simplify decoding of coupling frequency range 
Originally committed as revision 15809 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:17:56 +00:00
Justin Ruggles
24834c1928 cosmetics: rename two variables 
Originally committed as revision 15808 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-11-13 03:17:50 +00:00
Michael Niedermayer
047599a4ba Rename error_resilience to error_recognition. 
Originally committed as revision 15270 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-08 18:18:49 +00:00
Justin Ruggles
2988c93d94 create a separate codec_id for E-AC-3 
Originally committed as revision 15143 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-01 14:33:54 +00:00
Justin Ruggles
1f6a594de4 turn on E-AC-3 decoding support and update the Changelog 
Originally committed as revision 15103 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 03:08:18 +00:00
Justin Ruggles
f2e4eb62dc cosmetics: indentation 
Originally committed as revision 15089 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:32:08 +00:00
Justin Ruggles
8dfc56ec32 commit more OKed parts of the E-AC-3 decoder 
Originally committed as revision 15087 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-31 02:30:09 +00:00
Justin Ruggles
225c30429d commit more OKed parts of the E-AC-3 decoder 
Originally committed as revision 15068 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-30 23:19:23 +00:00
Justin Ruggles
ea364c74a0 cosmetics: update comment about dithering 
Originally committed as revision 15051 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-30 17:51:03 +00:00
Justin Ruggles
e522bd49c8 cosmetics: change another "get" to "decode" 
Originally committed as revision 15014 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-29 00:09:47 +00:00
Justin Ruggles
164e169fef cosmetics: change "get" to "decode" 
Originally committed as revision 15013 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-29 00:06:43 +00:00
Justin Ruggles
86662b1c89 cosmetics: indentation 
Originally committed as revision 15012 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-28 23:16:21 +00:00
Justin Ruggles
260e09305b remove unneeded variable, dither_all 
Originally committed as revision 15011 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-28 23:04:15 +00:00
Justin Ruggles
aec0407faf cosmetics: indent after last commit 
Originally committed as revision 15001 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 23:23:54 +00:00
Justin Ruggles
6b4bfed965 do not read exponent strategies from each block for E-AC-3 since they are in the header 
Originally committed as revision 15000 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 23:11:05 +00:00
Justin Ruggles
0ffea2439b copy default coupling band structure from table to decoding context (used for E-AC-3) 
Originally committed as revision 14990 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 01:40:46 +00:00
Justin Ruggles
e43b29ab26 add more OKed parts of the E-AC-3 decoder: structural changes to support AHT mode mantissa decoding 
Originally committed as revision 14989 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-27 01:36:20 +00:00