WMA compatible decoder. More...

#include "libavutil/attributes.h"
#include "libavutil/ffmath.h"
#include "avcodec.h"
#include "internal.h"
#include "wma.h"

Macros
#define	EXPVLCBITS 8

#define	EXPMAX ((19 + EXPVLCBITS - 1) / EXPVLCBITS)

#define	HGAINVLCBITS 9

#define	HGAINMAX ((13 + HGAINVLCBITS - 1) / HGAINVLCBITS)

Detailed Description

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.

Macros

Detailed Description