libavcodec/mpeg4audio.c File Reference

#include "bitstream.h"
#include "mpeg4audio.h"

Go to the source code of this file.

Functions
static int	get_object_type (GetBitContext *gb)
static int	get_sample_rate (GetBitContext *gb, int *index)
int	ff_mpeg4audio_get_config (MPEG4AudioConfig *c, const uint8_t *buf, int buf_size)
	Parse MPEG-4 systems extradata to retrieve audio configuration.
Variables
const int	ff_mpeg4audio_sample_rates [16]
const uint8_t	ff_mpeg4audio_channels [8]

---

Function Documentation

int ff_mpeg4audio_get_config	(	MPEG4AudioConfig *	c,
		const uint8_t *	buf,
		int	buf_size
	)

Parse MPEG-4 systems extradata to retrieve audio configuration.

Parameters:

[in]	c	MPEG4AudioConfig structure to fill.
[in]	buf	Extradata from container.
[in]	buf_size	Extradata size.

Returns:

On error -1 is returned, on success AudioSpecificConfig bit index in extradata.

Definition at line 49 of file mpeg4audio.c.

Referenced by decode_audio_specific_config(), flv_read_packet(), and mov_read_esds().

static int get_object_type

(

GetBitContext *

gb

)

[inline, static]

Definition at line 34 of file mpeg4audio.c.

Referenced by ff_mpeg4audio_get_config().

static int get_sample_rate	(	GetBitContext *	gb,
		int *	index
	)			[inline, static]

Definition at line 42 of file mpeg4audio.c.

Referenced by ff_mpeg4audio_get_config().

---

Variable Documentation

const uint8_t ff_mpeg4audio_channels[8]

Initial value:

 {
    0, 1, 2, 3, 4, 5, 6, 8
}

Definition at line 30 of file mpeg4audio.c.

Referenced by aac_sync(), ff_aac_parse_header(), flv_read_packet(), and mov_read_esds().

const int ff_mpeg4audio_sample_rates[16]

Initial value:

 {
    96000, 88200, 64000, 48000, 44100, 32000,
    24000, 22050, 16000, 12000, 11025, 8000, 7350
}

Definition at line 25 of file mpeg4audio.c.

Referenced by aac_encode_init(), decode_pce(), ff_aac_parse_header(), get_aac_sample_rates(), get_sample_rate(), and matroska_aac_sri().