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add the minimal documentation to make this decoder useful

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Originally committed as revision 3059 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2004-04-24 19:30:49 +00:00
parent 0f12310fe2
commit 7e56cd927b
1 changed files with 9 additions and 0 deletions
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9
libavcodec/wmadec.c
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@ -20,6 +20,15 @@
/** /**
* @file wmadec.c * @file wmadec.c
* WMA compatible decoder. * WMA compatible decoder.
* This decoder handles Microsoft Windows Media Audio data, versions 1 & 2.
* WMA v1 is identified by audio format 0x160 in Microsoft media files
* (ASF/AVI/WAV). WMA v2 is identified by audio format 0x161.
*
* To use this decoder, a calling application must supply the extra data
* bytes provided with the WMA data. These are the extra, codec-specific
* bytes at the end of a WAVEFORMATEX data structure. Transmit these bytes
* to the decoder using the extradata[_size] fields in AVCodecContext. There
* should be 4 extra bytes for v1 data and 6 extra bytes for v2 data.
*/ */
#include "avcodec.h" #include "avcodec.h"