gsmdec.c File Reference

#include "libavutil/channel_layout.h"
#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

Macros
#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)

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

Macro Definition Documentation

#define GSM_BLOCK_SIZE   33

Definition at line 28 of file gsmdec.c.

Referenced by gsm_read_header(), and gsm_read_packet().

#define GSM_BLOCK_SAMPLES   160

Definition at line 29 of file gsmdec.c.

Referenced by gsm_read_header().

#define GSM_SAMPLE_RATE   8000

Definition at line 30 of file gsmdec.c.

Referenced by gsm_read_header().

Function Documentation

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

static

Definition at line 37 of file gsmdec.c.

static int gsm_read_header ( AVFormatContext *  s )

static

Definition at line 57 of file gsmdec.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "sample_rate", "", 0x42,
       AV_OPT_TYPE_INT, {.i64 = GSM_SAMPLE_RATE}, 1, INT_MAX / GSM_BLOCK_SIZE,
       AV_OPT_FLAG_DECODING_PARAM },
    { NULL },
}

Definition at line 76 of file gsmdec.c.

class_name = "gsm demuxer"

Definition at line 84 of file gsmdec.c.

item_name = av_default_item_name

Definition at line 85 of file gsmdec.c.

option = options

Definition at line 86 of file gsmdec.c.

version = LIBAVUTIL_VERSION_INT

Definition at line 87 of file gsmdec.c.

const { ... }

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,
    .flags          = AVFMT_GENERIC_INDEX,
    .extensions     = "gsm",
    .raw_codec_id   = AV_CODEC_ID_GSM,
    .priv_class     = &class,
}

Definition at line 90 of file gsmdec.c.