FFmpeg: doc/examples/filter_audio.c File Reference

FFmpeg

#include <inttypes.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "libavutil/channel_layout.h"
#include "libavutil/md5.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/buffersink.h"
#include "libavfilter/buffersrc.h"

Go to the source code of this file.

Macros
#define	INPUT_SAMPLERATE 48000

#define	INPUT_FORMAT AV_SAMPLE_FMT_FLTP

#define	INPUT_CHANNEL_LAYOUT (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT0

#define	VOLUME_VAL 0.90

#define	FRAME_SIZE 1024

Functions
static int	init_filter_graph (AVFilterGraph graph, AVFilterContext src, AVFilterContext **sink)

static int	process_output (struct AVMD5 md5, AVFrame frame)

static int	get_input (AVFrame *frame, int frame_num)

int	main (int argc, char *argv[])

Detailed Description

libavfilter API usage example.

Definition in file filter_audio.c.

Macro Definition Documentation

◆ INPUT_SAMPLERATE

#define INPUT_SAMPLERATE 48000

Examples: filter_audio.c.

Definition at line 56 of file filter_audio.c.

◆ INPUT_FORMAT

#define INPUT_FORMAT AV_SAMPLE_FMT_FLTP

Examples: filter_audio.c.

Definition at line 57 of file filter_audio.c.

◆ INPUT_CHANNEL_LAYOUT

#define INPUT_CHANNEL_LAYOUT (AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT0

Examples: filter_audio.c.

Definition at line 58 of file filter_audio.c.

◆ VOLUME_VAL

#define VOLUME_VAL 0.90

Examples: filter_audio.c.

Definition at line 60 of file filter_audio.c.

◆ FRAME_SIZE

#define FRAME_SIZE 1024

Examples: filter_audio.c.

Function Documentation

◆ init_filter_graph()

static int init_filter_graph	(	AVFilterGraph **	graph,
		AVFilterContext **	src,
		AVFilterContext **	sink
	)

static

Examples: filter_audio.c.

Definition at line 62 of file filter_audio.c.

Referenced by main().

◆ process_output()

static int process_output	(	struct AVMD5 *	md5,
		AVFrame *	frame
	)

static

Examples: filter_audio.c.

Definition at line 214 of file filter_audio.c.

Referenced by main().

◆ get_input()

static int get_input	(	AVFrame *	frame,
		int	frame_num
	)

static

Examples: filter_audio.c.

Definition at line 241 of file filter_audio.c.

Referenced by main().

◆ main()

int main	(	int	argc,
		char *	argv[]
	)

Examples: filter_audio.c.

Definition at line 269 of file filter_audio.c.