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Commit Graph

109 Commits

Author SHA1 Message Date
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
2007-12-20 00:55:08 +00:00
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
2007-12-17 01:09:00 +00:00
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
2007-12-17 01:03:19 +00:00
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
2007-12-16 04:25:50 +00:00
Andreas Öman
6708eefe55 Make AC3 decoder honor avctx->request_channels
Originally committed as revision 11220 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-15 07:00:19 +00:00
Justin Ruggles
e2270b4e1e cosmetics: rename ac3 decoder variables
Originally committed as revision 11197 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:28:10 +00:00
Justin Ruggles
e59cc20593 cosmetics: rename common ac3 variables
Originally committed as revision 11196 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:27:14 +00:00
Justin Ruggles
5ce2134258 cosmetics: rename ac3 bit allocation variables
Originally committed as revision 11194 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:23:04 +00:00
Justin Ruggles
66ecf18e38 cosmetics: rename ac3 tables
Originally committed as revision 11193 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-09 03:21:33 +00:00
Diego Biurrun
56cc85a068 Misc spelling fixes, prefer American over British English.
Originally committed as revision 11126 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-02 15:43:08 +00:00
Justin Ruggles
a135bea507 skip incomplete frames
Originally committed as revision 10497 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 02:44:28 +00:00
Justin Ruggles
3df880934e better AC3 header error reporting
Originally committed as revision 10496 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 02:41:24 +00:00
Justin Ruggles
d5b7144e1f fix random dithering of zero-bit mantissas
Originally committed as revision 10495 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 00:43:40 +00:00
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
2007-09-15 00:19:21 +00:00
Justin Ruggles
396a6ee50e fix decoding of DolbyNet AC3
Originally committed as revision 10493 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-15 00:00:57 +00:00
Justin Ruggles
222ae64c3d cosmetics: vertical alignment
Originally committed as revision 10002 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-09 00:39:35 +00:00
Justin Ruggles
5066f51502 comments modification: add, clean up, Doxygenize, and reword
Originally committed as revision 10001 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-09 00:36:49 +00:00
Justin Ruggles
f5cefb21d5 cosmetics: blank lines, remove some comments
Originally committed as revision 9955 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 21:48:46 +00:00
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
2007-08-05 21:34:33 +00:00
Justin Ruggles
77416325cb use array for dynamic range scaling factors
Originally committed as revision 9953 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 21:10:09 +00:00
Justin Ruggles
01f354531d add dialogue normalization
Originally committed as revision 9948 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-05 19:36:35 +00:00
Justin Ruggles
3bbb0bf82c add support for downmixing to stereo or mono
Originally committed as revision 9916 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 22:32:17 +00:00
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
2007-08-04 20:59:22 +00:00
Justin Ruggles
775369e028 cosmetics: indentation
Originally committed as revision 9911 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 20:32:57 +00:00
Justin Ruggles
7b4076a777 consolidate decoding of lfe and coupling channels with decoding of full-bandwidth channels.
Originally committed as revision 9910 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 19:19:48 +00:00
Justin Ruggles
5e61de0cc1 there are only 4 rematrixing bands
Originally committed as revision 9908 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 15:01:21 +00:00
Justin Ruggles
75b9b0369b cosmetics: use more appropriate names for iterator variables.
Originally committed as revision 9907 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:52:56 +00:00
Justin Ruggles
8e2eb3b674 move some variables to a more local scope.
Originally committed as revision 9905 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:30:37 +00:00
Justin Ruggles
0bff58a59a make exponent decoding consistent (prepare for merging coupling and lfe code with normal channel code).
Originally committed as revision 9904 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 13:26:46 +00:00
Justin Ruggles
eaf84d970f cosmetics: use braces when it makes the code easier to read.
Originally committed as revision 9893 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 12:04:41 +00:00
Justin Ruggles
fc59010bbf change AC3DecodeContext variable to local variable
Originally committed as revision 9892 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 11:55:10 +00:00
Justin Ruggles
6d96d626c6 use array instead of bitmask
Originally committed as revision 9891 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 11:39:47 +00:00
Justin Ruggles
3357ff338b use table for converting dynamic range codes to scale factors
Originally committed as revision 9889 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 03:27:05 +00:00
Justin Ruggles
5aefe3ebef use floating-point mantissa dequantization tables
Originally committed as revision 9888 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 03:21:17 +00:00
Justin Ruggles
04ac5cada1 cosmetics: indentation
Originally committed as revision 9887 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 01:14:14 +00:00
Justin Ruggles
60f07fadd3 dither zero-bit mantissas by default. remove dithering only if it's explicitly turned off.
Originally committed as revision 9886 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 01:13:08 +00:00
Justin Ruggles
d63f6fea50 simplify coefficient decoding
Originally committed as revision 9884 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-04 00:12:23 +00:00
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
2007-08-04 00:04:17 +00:00
Justin Ruggles
d7dc7ad05c split out coupling coefficient reconstruction into a separate function
Originally committed as revision 9882 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-03 23:53:53 +00:00
Justin Ruggles
dfd57c366f align array used in mdct. fixes segfault.
Originally committed as revision 9848 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-01 01:13:58 +00:00
Justin Ruggles
8b60bbbf5b simplify stereo rematrixing
Originally committed as revision 9824 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-29 00:58:32 +00:00
Justin Ruggles
b6acc57f88 change 2 fields from context to local variables
Originally committed as revision 9823 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-29 00:35:30 +00:00
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
2007-07-28 20:50:25 +00:00
Justin Ruggles
7bfd22f25a remove broken downmixing. will add new implementation later.
Originally committed as revision 9821 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-28 19:33:19 +00:00
Justin Ruggles
4611b64ec1 simplify snr offset and bit allocation
Originally committed as revision 9784 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 02:08:27 +00:00
Justin Ruggles
e9a3824880 only use sized data types when necessary
Originally committed as revision 9783 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 01:43:47 +00:00
Justin Ruggles
8f58a4c943 set bit allocation parameters directly instead of copying
Originally committed as revision 9782 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-24 01:35:25 +00:00
Justin Ruggles
e2cd6686fa use enum value instead of numerical value for acmod
Originally committed as revision 9781 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-23 22:47:49 +00:00
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
2007-07-23 22:23:37 +00:00
Justin Ruggles
878c40a137 change some bit masks to arrays
Originally committed as revision 9779 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-23 22:16:15 +00:00