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571bbaf814
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105 Commits

Author SHA1 Message Date
Michael Niedermayer
571bbaf814 Factorize lpc code slightly. 
Originally committed as revision 15393 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-23 22:49:22 +00:00
Vitor Sessak
faf6d6964b Use SAMPLE_FMT_FLT instead of doing the float->int conversion in the 
decoder. This changes the output very little and any difference should
be inaudible.

Originally committed as revision 15343 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-17 19:26:37 +00:00
Vitor Sessak
9547cadb8d Cosmetics: line breaks 
Originally committed as revision 15308 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-13 16:56:58 +00:00
Vitor Sessak
111734de09 Simplify: use a single history buffer for gain and a single one for 
speech instead of having two for each in the context.

Originally committed as revision 15307 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-13 16:49:05 +00:00
Vitor Sessak
9c10ab6cd1 Cosmetics: align spec references 
Originally committed as revision 15300 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-11 19:10:26 +00:00
Vitor Sessak
5381a00a2b Rename function: s/colmult/apply_window/ 
Originally committed as revision 15299 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-11 19:06:54 +00:00
Diego Biurrun
36b3e36e00 misc spelling/wording/grammar fixes 
Originally committed as revision 15296 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-11 08:13:23 +00:00
Vitor Sessak
fd8897e803 Convert table to integer. 
Originally committed as revision 15292 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-10 19:00:02 +00:00
Vitor Sessak
1be0fc2909 Avoid duplicating compute_lpc_coefs() function in both the RA288 and AAC decoders. 
Originally committed as revision 15193 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-04 11:03:14 +00:00
Vitor Sessak
8089c652a7 Check *data_size in decode_frame() 
Originally committed as revision 14636 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-06 03:00:15 +00:00
Vitor Sessak
5991704634 Cosmetics: alignment 
Originally committed as revision 14635 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-06 02:49:22 +00:00
Vitor Sessak
e3751aa6ec Flip (by making buf[i] -> buf[size-i-1]) two buffers: {sp,gain}_block. This 
needs duplicating a few loops, but now the code is clearer.

Originally committed as revision 14634 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-06 02:44:59 +00:00
Vitor Sessak
6888b4fcec Rename prodsum() function to convolve() 
Originally committed as revision 14615 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-08-05 04:52:33 +00:00
Peter Ross
fd76c37fd9 Modify all codecs to report their supported input and output sample format(s). 
Originally committed as revision 14482 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-31 10:47:31 +00:00
Vitor Sessak
4ca7e74c1f Do not declare a counter as unsigned when it is not needed 
Originally committed as revision 14469 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-29 18:22:31 +00:00
Vitor Sessak
4e33ed368a Cosmetics: rename loop counter vars to i,j 
Originally committed as revision 14468 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-29 18:20:49 +00:00
Vitor Sessak
045e21cc19 Cosmetics: new line 
Originally committed as revision 14457 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 10:49:44 +00:00
Vitor Sessak
e7e4f476c0 Remove the now useless phase variable from context 
Originally committed as revision 14456 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 10:49:14 +00:00
Vitor Sessak
c749f3db98 Cosmetics: make comment match var name 
Originally committed as revision 14454 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 05:18:39 +00:00
Vitor Sessak
6509507fad Cosmetics: align comments 
Originally committed as revision 14453 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 05:16:51 +00:00
Vitor Sessak
f285e6dd31 Rename two context vars: s/sb/sp_block/, s/lhist/gain_block/ 
Originally committed as revision 14452 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 04:53:05 +00:00
Vitor Sessak
36826ee0df Declare temporary buffers to be only of the necessary size 
Originally committed as revision 14451 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 04:37:58 +00:00
Vitor Sessak
5e707c5905 Remove redundant comments 
Originally committed as revision 14450 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 04:25:51 +00:00
Vitor Sessak
c6ad13044a Cosmetics: do not align with now removed next instruction 
Originally committed as revision 14449 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 04:24:08 +00:00
Vitor Sessak
2c46367163 Cosmetics: remove braces and useless newline 
Originally committed as revision 14448 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 04:07:18 +00:00
Vitor Sessak
2b356efec2 Change the way the input is passed to do_hybrid_filter(). Before, in[0] was 
the oldest input sample passed and in[n-1] was the latest. Now it is the
contrary. This allows making backward_filter() somewhat simpler.

Originally committed as revision 14447 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 02:55:47 +00:00
Vitor Sessak
aed39f6c02 Remove RA288Context.output buffer. This buffer is just RA288Context.sb 
backwards (output[i] == sb[N-i], where N is the buffer length).

This makes the code slower, this will be fixed in my next commit.

Originally committed as revision 14446 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-28 02:53:07 +00:00
Vitor Sessak
b26d320583 Add a few comments pointing to the G.728 specification 
Originally committed as revision 14444 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-27 22:22:51 +00:00
Vitor Sessak
854ce441c3 Remove the history buffer from the context. It can easily be evaluated 
from the lhist buffer.

Originally committed as revision 14443 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-27 22:21:41 +00:00
Vitor Sessak
0143ec2a7e Rename two context buffers: pr{1,2} -> {sp,gain}_lpc. Also add a few doxy 
comments.

Originally committed as revision 14437 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-27 20:58:29 +00:00
Vitor Sessak
59da0390dc Remove st1 and st2 temporary buffers in backward_filter() and use instead 
RA288Context.pr{1,2}. Note that the pr{1,2} buffers are one unity smaller
than the st{1,2} buffers. My guess is that the original coder decided to
add one to the array sizes "just to be sure".

Originally committed as revision 14435 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-27 20:55:27 +00:00
Vitor Sessak
3df136d438 Change slightly the meaning of RA288Context.phase. This 
allows to remove two intermediary buffers and avoid a few
memcpy's.

Originally committed as revision 14432 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-27 20:35:32 +00:00
Vitor Sessak
f42eb5715d Remove st1 and st2 variables from context, since they could be just local vars 
Originally committed as revision 14421 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 15:14:50 +00:00
Vitor Sessak
272d258ab9 Rename st{1,2}{a,b} context variables to more meaningful names: {sp,gain}_{rec,hist} 
Originally committed as revision 14420 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 15:10:17 +00:00
Vitor Sessak
efa86ebe4c Cosmetics: remove useless parenthesis 
Originally committed as revision 14418 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:38:29 +00:00
Vitor Sessak
e07c5ade5e Move colmult() function to the beginning of file to group DSP-related functions. 
Originally committed as revision 14417 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:35:50 +00:00
Vitor Sessak
5af20c207e Remove an useless comment describing colmult() 
Originally committed as revision 14416 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:33:53 +00:00
Vitor Sessak
d899014ee2 Remove an useless comment describing prodsum() 
Originally committed as revision 14415 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:33:25 +00:00
Vitor Sessak
952a980d75 Give the context variables of ra288 a better name: s/glob/ractx/ 
Originally committed as revision 14414 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:31:47 +00:00
Vitor Sessak
029e1c01b5 Give the context structure of ra288 a better name: s/Real288_internal/RA288Context/ 
Originally committed as revision 14413 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-26 14:29:39 +00:00
Vitor Sessak
a53b545068 Cosmetics: grammar nits 
Originally committed as revision 14368 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 11:55:01 +00:00
Vitor Sessak
2477d60944 Rename update() function to backward_filter() and add a doxy comment 
Originally committed as revision 14364 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 04:29:23 +00:00
Vitor Sessak
a6755f8d53 Rename and comment bandwidth broadening tables 
(s/table1a/syn_bw_tab/, s/table2a/gain_bw_tab/).

Originally committed as revision 14363 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 04:15:50 +00:00
Vitor Sessak
5e65f5df0e Follow FFmpeg convention of returning negative values on error in eval_lpc_coeffs() 
Originally committed as revision 14362 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 04:07:50 +00:00
Vitor Sessak
a3896c6377 Rename pred() to eval_lpc_coeffs() and add a doxy comment 
Originally committed as revision 14361 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 04:05:41 +00:00
Vitor Sessak
a0cce1587b Give windowing tables a more descriptive name 
(s/table1/syn_window/, s/table2/gain_window/).

Originally committed as revision 14360 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 03:50:06 +00:00
Vitor Sessak
475d0e1464 Add comments to do_hybrid_window() 
Originally committed as revision 14359 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 03:28:42 +00:00
Vitor Sessak
0f72a2b7d3 Give parameters of do_hybrid_window() more meaningful names 
Originally committed as revision 14358 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 03:28:01 +00:00
Vitor Sessak
427981c7a6 Rename co() function to the much more descriptive name of 
do_hybrid_window(). Also change a misleading and wrong comment.

Originally committed as revision 14357 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 03:23:51 +00:00
Vitor Sessak
5ab3d66fe5 Simplify co(): write constant in a more readable way 
Originally committed as revision 14356 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-07-24 03:22:19 +00:00