astenc.c File Reference

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

Go to the source code of this file.

Data Structures
struct	ASTMuxContext

Macros
#define	CHECK_LOOP(type)
#define	OFFSET(obj)   offsetof(ASTMuxContext, obj)

Functions
static int	ast_write_header (AVFormatContext *s)
static int	ast_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	ast_write_trailer (AVFormatContext *s)

Variables
static const AVOption	options []
static const AVClass	ast_muxer_class
AVOutputFormat	ff_ast_muxer

Macro Definition Documentation

CHECK_LOOP

#define CHECK_LOOP

(

type

)

Value:

if (ast->loop ## type > 0) { \
        ast->loop ## type = av_rescale_rnd(ast->loop ## type, par->sample_rate, 1000, AV_ROUND_DOWN); \
        if (ast->loop ## type < 0 || ast->loop ## type > UINT_MAX) { \
            av_log(s, AV_LOG_ERROR, "Invalid loop" #type " value\n"); \
            return AVERROR(EINVAL);  \
        } \
    }

Definition at line 38 of file astenc.c.

Referenced by ast_write_header().

OFFSET

#define OFFSET

(

obj

)

offsetof(ASTMuxContext, obj)

Definition at line 188 of file astenc.c.

Function Documentation

ast_write_header()

static int ast_write_header ( AVFormatContext *  s )

static

Definition at line 47 of file astenc.c.

ast_write_packet()

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

static

Definition at line 109 of file astenc.c.

ast_write_trailer()

static int ast_write_trailer ( AVFormatContext *  s )

static

Definition at line 132 of file astenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
  { "loopstart", "Loopstart position in milliseconds.", OFFSET(loopstart), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
  { "loopend",   "Loopend position in milliseconds.",   OFFSET(loopend),   AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
  { NULL },
}

Definition at line 189 of file astenc.c.

ast_muxer_class

const AVClass ast_muxer_class

static

Initial value:

= {
    .class_name = "AST muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 195 of file astenc.c.

ff_ast_muxer

AVOutputFormat ff_ast_muxer

Initial value:

= {
    .name              = "ast",
    .long_name         = NULL_IF_CONFIG_SMALL("AST (Audio Stream)"),
    .extensions        = "ast",
    .priv_data_size    = sizeof(ASTMuxContext),
    .audio_codec       = AV_CODEC_ID_PCM_S16BE_PLANAR,
    .video_codec       = AV_CODEC_ID_NONE,
    .write_header      = ast_write_header,
    .write_packet      = ast_write_packet,
    .write_trailer     = ast_write_trailer,
    .priv_class        = &ast_muxer_class,
    .codec_tag         = (const AVCodecTag* const []){ff_codec_ast_tags, 0},
}

Definition at line 202 of file astenc.c.