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Author SHA1 Message Date
Vladimir Voroshilov ce9eac7913 Implement bidirectional (positive offset - left, negative - right) 
signed shift for ACELP-based codecs.

Originally committed as revision 13117 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-11 11:49:25 +00:00
Vladimir Voroshilov 542c064d1b Update comment to version, negotiated with Diego, and 
fix missing period (not latest revision of patch
was wrongly committed).

Originally committed as revision 13113 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-11 10:07:11 +00:00
Vladimir Voroshilov 7c96587c17 Fix compilation error. 
It was introduced after changing input parameter and
overlooked during review process.

Originally committed as revision 13112 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-11 05:28:29 +00:00
Vladimir Voroshilov a52000f291 various filters for ACELP-based codecs 
Originally committed as revision 13110 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-11 03:42:53 +00:00
Vladimir Voroshilov 3f3865d30b Replace hardcoded LP filter order with parameter. 
This will allow to reuse the code in the SIPR decoder.

Originally committed as revision 13108 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-05-11 03:18:18 +00:00
Vladimir Voroshilov 8726882993 Fixed-point LSP and LPC decoding routines for ACELP-based codecs 
Originally committed as revision 12978 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-26 11:52:33 +00:00
Vladimir Voroshilov 1cf3ee2d1c Fixed-point implementation of ff_cos, ff_log2, ff_exp2. 
Also implemented routine for calculating sum(a[i] * a[i-offset]>>shift)

Originally committed as revision 12974 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-25 17:14:47 +00:00
Vladimir Voroshilov 159ef4b02a Implement FFMAX3(a,b,c) - maximum over three arguments. 
Originally committed as revision 12910 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-19 17:07:58 +00:00
Vladimir Voroshilov c6cd525aa0 Decrease returning probe score for WAV demuxer to avoid 
probe conflict between WAV and future ACT demuxer.
This is necessary because ACT has standard WAV header
at top of it's own.

Originally committed as revision 12909 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-04-19 14:52:19 +00:00
Vladimir Voroshilov 3c3704d281 Fix MJPEG decoder for AMV files. 
Since decoding is doing from the end and aligned by 16
previous code worked correctly only when picture height was dividable by 16,
otherwise it provides garbage in top lines and truncates bottom.
New code adjusts data[] pointers taking in account alignment issue.

Originally committed as revision 10727 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-13 17:38:58 +00:00
Vladimir Voroshilov 94d9633a32 Replace "signed short" typecast with "int16_t" as suggested by 
Mans Rullgard. Value at the right side is 16 bit length signed.
We can not know for sure that short is in fact 16 bits, even if
this virtually always is the case.

Originally committed as revision 10666 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-04 15:13:42 +00:00
Vladimir Voroshilov 330194b9ce Fix audio clicks in ADPCM IMA AMV by casting predictor as "signed short" 
Initialize step_index as int16_t (as multimedia wiki says).

Originally committed as revision 10657 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-10-03 19:32:57 +00:00
Vladimir Voroshilov 0b04ebb326 Add support for AMV variants of AVI files. 
patch by Vladimir Voroshilov, voroshil gmail com
Date: Sun, 30 Sep 2007 00:30:34 +0700
Subject: Re: [FFmpeg-devel] [PATCH] Demuxer for AMV files

Originally committed as revision 10623 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 22:47:34 +00:00
Vladimir Voroshilov 8787d8377f AMV video decoder. 
Patch by Vladimir Voroshilov (voroshil - gmail - com)

Originally committed as revision 10617 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 15:20:22 +00:00
Vladimir Voroshilov a449faeacb Add variables to prepare to the AMV decoder patch. 
Patch by Vladimir Voroshilov (voroshil - gmail - com)

Originally committed as revision 10614 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2007-09-29 12:52:56 +00:00