libavformat/gsmdec.c File Reference

#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	GSMDemuxerContext
Defines
#define	GSM_BLOCK_SIZE   33
#define	GSM_BLOCK_SAMPLES   160
#define	GSM_SAMPLE_RATE   8000
Functions
static int	gsm_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	gsm_read_header (AVFormatContext *s, AVFormatParameters *ap)
static int	gsm_read_seek2 (AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
Variables
static const AVOption	options []
class {
class_name = "gsm demuxer"
item_name = av_default_item_name
option = options
version = LIBAVUTIL_VERSION_INT
};
AVInputFormat	ff_gsm_demuxer

---

Define Documentation

#define GSM_BLOCK_SAMPLES   160

Definition at line 28 of file gsmdec.c.

Referenced by gsm_read_header(), and gsm_read_seek2().

#define GSM_BLOCK_SIZE   33

Definition at line 27 of file gsmdec.c.

#define GSM_SAMPLE_RATE   8000

Definition at line 29 of file gsmdec.c.

Referenced by gsm_read_header().

---

Function Documentation

static int gsm_read_header	(	AVFormatContext *	s,
		AVFormatParameters *	ap
	)			[static]

Definition at line 57 of file gsmdec.c.

static int gsm_read_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 36 of file gsmdec.c.

static int gsm_read_seek2	(	AVFormatContext *	s,
		int	stream_index,
		int64_t	min_ts,
		int64_t	ts,
		int64_t	max_ts,
		int	flags
	)			[static]

Definition at line 76 of file gsmdec.c.

---

Variable Documentation

const { ... } [static]

class_name = "gsm demuxer"

Definition at line 117 of file gsmdec.c.

AVInputFormat ff_gsm_demuxer

Initial value:

 {
    .name           = "gsm",
    .long_name      = NULL_IF_CONFIG_SMALL("raw GSM"),
    .priv_data_size = sizeof(GSMDemuxerContext),
    .read_header    = gsm_read_header,
    .read_packet    = gsm_read_packet,
    .read_seek2     = gsm_read_seek2,
    .extensions     = "gsm",
    .value          = CODEC_ID_GSM,
    .priv_class     = &class,
}

Definition at line 123 of file gsmdec.c.

item_name = av_default_item_name

Definition at line 118 of file gsmdec.c.

option = options

Definition at line 119 of file gsmdec.c.

const AVOption options[] [static]

Initial value:

 {
    { "sample_rate", "", 0x42,
       AV_OPT_TYPE_INT, {.dbl = GSM_SAMPLE_RATE}, 1, INT_MAX / GSM_BLOCK_SIZE,
       AV_OPT_FLAG_DECODING_PARAM },
    { NULL },
}

Definition at line 109 of file gsmdec.c.

version = LIBAVUTIL_VERSION_INT

Definition at line 120 of file gsmdec.c.