demuxing_decoding.c File Reference

Demuxing and decoding example. More...

#include <libavutil/imgutils.h>
#include <libavutil/samplefmt.h>
#include <libavutil/timestamp.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>

Go to the source code of this file.

Functions
static int	output_video_frame (AVFrame *frame)
static int	output_audio_frame (AVFrame *frame)
static int	decode_packet (AVCodecContext *dec, const AVPacket *pkt)
static int	open_codec_context (int *stream_idx, AVCodecContext **dec_ctx, AVFormatContext *fmt_ctx, enum AVMediaType type)
static int	get_format_from_sample_fmt (const char **fmt, enum AVSampleFormat sample_fmt)
int	main (int argc, char **argv)

Variables
static AVFormatContext *	fmt_ctx = NULL
static AVCodecContext *	video_dec_ctx = NULL
static AVCodecContext *	audio_dec_ctx
static int	width
static int	height
static enum AVPixelFormat	pix_fmt
static AVStream *	video_stream = NULL
static AVStream *	audio_stream = NULL
static const char *	src_filename = NULL
static const char *	video_dst_filename = NULL
static const char *	audio_dst_filename = NULL
static FILE *	video_dst_file = NULL
static FILE *	audio_dst_file = NULL
static uint8_t *	video_dst_data [4] = {NULL}
static int	video_dst_linesize [4]
static int	video_dst_bufsize
static int	video_stream_idx = -1
static int	audio_stream_idx = -1
static AVFrame *	frame = NULL
static AVPacket *	pkt = NULL
static int	video_frame_count = 0
static int	audio_frame_count = 0

Detailed Description

Demuxing and decoding example.

Show how to use the libavformat and libavcodec API to demux and decode audio and video data.

Definition in file demuxing_decoding.c.

Function Documentation

output_video_frame()

static int output_video_frame ( AVFrame *  frame )

static

Examples

demuxing_decoding.c.

Definition at line 59 of file demuxing_decoding.c.

Referenced by decode_packet().

output_audio_frame()

static int output_audio_frame ( AVFrame *  frame )

static

Examples

demuxing_decoding.c.

Definition at line 90 of file demuxing_decoding.c.

Referenced by decode_packet().

decode_packet()

static int decode_packet ( AVCodecContext *  dec, const AVPacket *  pkt  )

static

Examples

demuxing_decoding.c.

Definition at line 110 of file demuxing_decoding.c.

Referenced by main().

open_codec_context()

static int open_codec_context ( int *  stream_idx, AVCodecContext **  dec_ctx, AVFormatContext *  fmt_ctx, enum AVMediaType  type  )

static

Examples

demuxing_decoding.c.

Definition at line 146 of file demuxing_decoding.c.

Referenced by main().

get_format_from_sample_fmt()

static int get_format_from_sample_fmt ( const char **  fmt, enum AVSampleFormat  sample_fmt  )

static

Examples

demuxing_decoding.c.

Definition at line 197 of file demuxing_decoding.c.

Referenced by main().

main()

int main	(	int	argc,
		char **	argv
	)

Examples

demuxing_decoding.c.

Definition at line 226 of file demuxing_decoding.c.

Variable Documentation

fmt_ctx

AVFormatContext* fmt_ctx = NULL

static

Examples

avio_reading.c, demuxing_decoding.c, metadata.c, muxing.c, and remuxing.c.

Definition at line 38 of file demuxing_decoding.c.

Referenced by log_packet(), main(), open_codec_context(), and write_frame().

video_dec_ctx

AVCodecContext* video_dec_ctx = NULL

static

Examples

demuxing_decoding.c.

Definition at line 39 of file demuxing_decoding.c.

Referenced by main().

audio_dec_ctx

AVCodecContext * audio_dec_ctx

static

Examples

demuxing_decoding.c.

Definition at line 39 of file demuxing_decoding.c.

Referenced by main(), and output_audio_frame().

width

int width

static

Examples

demuxing_decoding.c, muxing.c, and scaling_video.c.

Definition at line 40 of file demuxing_decoding.c.

Referenced by alloc_picture(), fill_yuv_image(), main(), and output_video_frame().

height

int height

static

Examples

demuxing_decoding.c, muxing.c, and scaling_video.c.

Definition at line 40 of file demuxing_decoding.c.

Referenced by alloc_picture(), fill_yuv_image(), main(), and output_video_frame().

pix_fmt

enum AVPixelFormat pix_fmt

static

Examples

demuxing_decoding.c, and muxing.c.

Definition at line 41 of file demuxing_decoding.c.

Referenced by alloc_picture(), main(), and output_video_frame().

video_stream

AVStream* video_stream = NULL

static

Examples

demuxing_decoding.c, and hw_decode.c.

Definition at line 42 of file demuxing_decoding.c.

Referenced by main().

audio_stream

AVStream * audio_stream = NULL

static

Examples

demuxing_decoding.c.

Definition at line 42 of file demuxing_decoding.c.

Referenced by main().

src_filename

const char* src_filename = NULL

static

Examples

demuxing_decoding.c.

Definition at line 43 of file demuxing_decoding.c.

Referenced by main(), and open_codec_context().

video_dst_filename

const char* video_dst_filename = NULL

static

Examples

demuxing_decoding.c.

Definition at line 44 of file demuxing_decoding.c.

Referenced by main().

audio_dst_filename

const char* audio_dst_filename = NULL

static

Examples

demuxing_decoding.c.

Definition at line 45 of file demuxing_decoding.c.

Referenced by main().

video_dst_file

FILE* video_dst_file = NULL

static

Examples

demuxing_decoding.c.

Definition at line 46 of file demuxing_decoding.c.

Referenced by main(), and output_video_frame().

audio_dst_file

FILE* audio_dst_file = NULL

static

Examples

demuxing_decoding.c.

Definition at line 47 of file demuxing_decoding.c.

Referenced by main(), and output_audio_frame().

video_dst_data

uint8_t* video_dst_data[4] = {NULL}

static

Examples

demuxing_decoding.c.

Definition at line 49 of file demuxing_decoding.c.

Referenced by main(), and output_video_frame().

video_dst_linesize

int video_dst_linesize[4]

static

Examples

demuxing_decoding.c.

Definition at line 50 of file demuxing_decoding.c.

Referenced by main(), and output_video_frame().

video_dst_bufsize

int video_dst_bufsize

static

Examples

demuxing_decoding.c.

Definition at line 51 of file demuxing_decoding.c.

Referenced by main(), and output_video_frame().

video_stream_idx

int video_stream_idx = -1

static

Examples

demuxing_decoding.c.

Definition at line 53 of file demuxing_decoding.c.

Referenced by main().

audio_stream_idx

int audio_stream_idx = -1

static

Examples

demuxing_decoding.c.

Definition at line 53 of file demuxing_decoding.c.

Referenced by main().

frame

AVFrame* frame = NULL

static

Examples

decode_audio.c, decode_video.c, demuxing_decoding.c, encode_audio.c, encode_video.c, filter_audio.c, filtering_audio.c, filtering_video.c, hw_decode.c, muxing.c, qsvdec.c, transcode_aac.c, transcoding.c, vaapi_encode.c, and vaapi_transcode.c.

Definition at line 54 of file demuxing_decoding.c.

Referenced by alloc_audio_frame(), dec_enc(), decode(), decode_audio_frame(), decode_packet(), decode_write(), display_frame(), encode(), encode_audio_frame(), encode_write(), filter_encode_write_frame(), get_audio_frame(), get_input(), init_input_frame(), init_output_frame(), main(), output_audio_frame(), output_video_frame(), print_frame(), process_output(), write_audio_frame(), and write_frame().

pkt

AVPacket* pkt = NULL

static

Examples

decode_audio.c, decode_video.c, demuxing_decoding.c, encode_audio.c, encode_video.c, muxing.c, qsvdec.c, remuxing.c, and vaapi_transcode.c.

Definition at line 55 of file demuxing_decoding.c.

Referenced by dec_enc(), decode(), decode_packet(), encode(), log_packet(), main(), and write_frame().

video_frame_count

int video_frame_count = 0

static

Examples

demuxing_decoding.c.

Definition at line 56 of file demuxing_decoding.c.

Referenced by output_video_frame().

audio_frame_count

int audio_frame_count = 0

static

Examples

demuxing_decoding.c.

Definition at line 57 of file demuxing_decoding.c.

Referenced by output_audio_frame().