libavformat/mov_chan.h File Reference

#include <stdint.h>
#include "libavcodec/avcodec.h"
#include "avformat.h"

Go to the source code of this file.

Functions
uint64_t	ff_mov_get_channel_layout (uint32_t tag, uint32_t bitmap)
	mov 'chan' tag reading/writing.
uint32_t	ff_mov_get_channel_layout_tag (enum AVCodecID codec_id, uint64_t channel_layout, uint32_t *bitmap)
	Get the channel layout tag for the specified codec id and channel layout.
int	ff_mov_read_chan (AVFormatContext *s, AVIOContext *pb, AVStream *st, int64_t size)
	Read 'chan' tag from the input stream.

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Function Documentation

uint64_t ff_mov_get_channel_layout	(	uint32_t	tag,
		uint32_t	bitmap
	)

mov 'chan' tag reading/writing.

Author:

Justin Ruggles Get the channel layout for the specified channel layout tag.

Parameters:

[in]	tag	channel layout tag
[out]	bitmap	channel bitmap (only used if needed)

Returns:

channel layout

Definition at line 453 of file mov_chan.c.

Referenced by ff_mov_read_chan().

uint32_t ff_mov_get_channel_layout_tag	(	enum AVCodecID	codec_id,
		uint64_t	channel_layout,
		uint32_t *	bitmap
	)

Get the channel layout tag for the specified codec id and channel layout.

If the layout tag was not found, use a channel bitmap if possible.

Parameters:

[in]	codec_id	codec id
[in]	channel_layout	channel layout
[out]	bitmap	channel bitmap

Returns:

channel layout tag

Definition at line 493 of file mov_chan.c.

Referenced by mov_write_chan_tag().

int ff_mov_read_chan	(	AVFormatContext *	s,
		AVIOContext *	pb,
		AVStream *	st,
		int64_t	size
	)

Read 'chan' tag from the input stream.

Parameters:

	s	AVFormatContext
	pb	AVIOContext
	st	The stream to set codec values for
	size	Remaining size in the 'chan' tag

Returns:

0 if ok, or negative AVERROR code on failure

Definition at line 546 of file mov_chan.c.