muxing.c File Reference

libavformat API example. More...

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <libavutil/avassert.h>
#include <libavutil/channel_layout.h>
#include <libavutil/opt.h>
#include <libavutil/mathematics.h>
#include <libavutil/timestamp.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libswresample/swresample.h>

Go to the source code of this file.

Data Structures
struct	OutputStream

Macros
#define	STREAM_DURATION   10.0
#define	STREAM_FRAME_RATE   25 /* 25 images/s */
#define	STREAM_PIX_FMT   AV_PIX_FMT_YUV420P /* default pix_fmt */
#define	SCALE_FLAGS   SWS_BICUBIC

Functions
static void	log_packet (const AVFormatContext *fmt_ctx, const AVPacket *pkt)
static int	write_frame (AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
static void	add_stream (OutputStream *ost, AVFormatContext *oc, AVCodec **codec, enum AVCodecID codec_id)
static void	open_audio (AVFormatContext *oc, AVCodec *codec, OutputStream *ost)
static AVFrame *	get_audio_frame (OutputStream *ost)
static int	write_audio_frame (AVFormatContext *oc, OutputStream *ost)
static AVFrame *	alloc_picture (enum AVPixelFormat pix_fmt, int width, int height)
static void	open_video (AVFormatContext *oc, AVCodec *codec, OutputStream *ost)
static void	fill_yuv_image (AVFrame *pict, int frame_index, int width, int height)
static AVFrame *	get_video_frame (OutputStream *ost)
static int	write_video_frame (AVFormatContext *oc, OutputStream *ost)
static void	close_stream (AVFormatContext *oc, OutputStream *ost)
int	main (int argc, char **argv)

Variables
int	samples_count
struct SwrContext *	swr_ctx = NULL

Detailed Description

libavformat API example.

Output a media file in any supported libavformat format. The default codecs are used.

Definition in file muxing.c.

Macro Definition Documentation

#define STREAM_DURATION   10.0

Examples:

muxing.c.

Definition at line 46 of file muxing.c.

Referenced by get_audio_frame(), and get_video_frame().

#define STREAM_FRAME_RATE   25 /* 25 images/s */

Examples:

muxing.c.

Definition at line 47 of file muxing.c.

Referenced by add_stream().

#define STREAM_PIX_FMT   AV_PIX_FMT_YUV420P /* default pix_fmt */

Examples:

muxing.c.

Definition at line 48 of file muxing.c.

Referenced by add_stream().

#define SCALE_FLAGS   SWS_BICUBIC

Examples:

muxing.c.

Definition at line 50 of file muxing.c.

Function Documentation

static void log_packet ( const AVFormatContext *  fmt_ctx, const AVPacket *  pkt  )

static

Examples:

muxing.c, and remuxing.c.

Definition at line 67 of file muxing.c.

Referenced by write_frame().

static int write_frame ( AVFormatContext *  fmt_ctx, const AVRational *  time_base, AVStream *  st, AVPacket *  pkt  )

static

Examples:

muxing.c.

Definition at line 78 of file muxing.c.

Referenced by write_audio_frame(), and write_video_frame().

static void add_stream ( OutputStream *  ost, AVFormatContext *  oc, AVCodec **  codec, enum AVCodecID  codec_id  )

static

Examples:

muxing.c.

Definition at line 90 of file muxing.c.

Referenced by main().

static void open_audio ( AVFormatContext *  oc, AVCodec *  codec, OutputStream *  ost  )

static

Examples:

muxing.c.

Definition at line 165 of file muxing.c.

Referenced by main().

static AVFrame* get_audio_frame ( OutputStream *  ost )

static

Examples:

muxing.c.

Definition at line 244 of file muxing.c.

Referenced by write_audio_frame().

static int write_audio_frame ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples:

muxing.c.

Definition at line 280 of file muxing.c.

Referenced by main().

static AVFrame* alloc_picture ( enum AVPixelFormat  pix_fmt, int  width, int  height  )

static

Examples:

muxing.c.

Definition at line 340 of file muxing.c.

Referenced by open_video().

static void open_video ( AVFormatContext *  oc, AVCodec *  codec, OutputStream *  ost  )

static

Examples:

muxing.c.

Definition at line 363 of file muxing.c.

Referenced by main().

static void fill_yuv_image ( AVFrame *  pict, int  frame_index, int  width, int  height  )

static

Examples:

muxing.c, and scaling_video.c.

Definition at line 396 of file muxing.c.

static AVFrame* get_video_frame ( OutputStream *  ost )

static

Examples:

muxing.c.

Definition at line 425 of file muxing.c.

Referenced by write_video_frame().

static int write_video_frame ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples:

muxing.c.

Definition at line 466 of file muxing.c.

Referenced by main().

static void close_stream ( AVFormatContext *  oc, OutputStream *  ost  )

static

Examples:

muxing.c.

Definition at line 520 of file muxing.c.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 531 of file muxing.c.

Variable Documentation

int samples_count

Examples:

muxing.c.

Definition at line 161 of file muxing.c.

Referenced by write_audio_frame().

struct SwrContext* swr_ctx = NULL

Examples:

muxing.c, and resampling_audio.c.

Definition at line 163 of file muxing.c.

Referenced by main().