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
 

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, AVFormatParameters *ap)
 

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_SAMPLES   160

Definition at line 28 of file gsmdec.c.

Referenced by gsm_read_header().

#define GSM_BLOCK_SIZE   33

Definition at line 27 of file gsmdec.c.

Referenced by gsm_init(), gsm_read_header(), and gsm_read_packet().

#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.

Variable Documentation

const { ... }
class_name = "gsm demuxer"

Definition at line 83 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),
.extensions = "gsm",
.value = CODEC_ID_GSM,
.priv_class = &class,
}
static int read_header(FFV1Context *f)
Definition: ffv1.c:1513
static int flags
Definition: log.c:34
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:191
as in Berlin toast format
Definition: avcodec.h:357
static int gsm_read_header(AVFormatContext *s, AVFormatParameters *ap)
Definition: gsmdec.c:57
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:109
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:376
static int gsm_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: gsmdec.c:36

Definition at line 89 of file gsmdec.c.

item_name = av_default_item_name

Definition at line 84 of file gsmdec.c.

option = options

Definition at line 85 of file gsmdec.c.

const AVOption options[]
static
Initial value:
= {
{ "sample_rate", "", 0x42,
{ NULL },
}
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:275
#define GSM_BLOCK_SIZE
Definition: gsmdec.c:27
#define GSM_SAMPLE_RATE
Definition: gsmdec.c:29
NULL
Definition: eval.c:50

Definition at line 75 of file gsmdec.c.

Definition at line 86 of file gsmdec.c.