doc/examples/filtering_audio.c File Reference

API example for audio decoding and filtering. More...

#include <unistd.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavfilter/avfiltergraph.h>
#include <libavfilter/avcodec.h>
#include <libavfilter/buffersink.h>
#include <libavfilter/buffersrc.h>

Go to the source code of this file.

Functions
static int	open_input_file (const char *filename)
static int	init_filters (const char *filters_descr)
static void	print_samplesref (AVFilterBufferRef *samplesref)
int	main (int argc, char **argv)
Variables
const char *	filter_descr = "aresample=8000,aconvert=s16:mono"
const char *	player = "ffplay -f s16le -ar 8000 -ac 1 -"
static AVFormatContext *	fmt_ctx
static AVCodecContext *	dec_ctx
AVFilterContext *	buffersink_ctx
AVFilterContext *	buffersrc_ctx
AVFilterGraph *	filter_graph
static int	audio_stream_index = -1

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Detailed Description

API example for audio decoding and filtering.

Definition in file filtering_audio.c.

---

Function Documentation

static int init_filters

(

const char *

filters_descr

)

[static]

Definition at line 82 of file filtering_audio.c.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 166 of file filtering_audio.c.

static int open_input_file

(

const char *

filename

)

[static]

Definition at line 49 of file filtering_audio.c.

Referenced by main(), and probe_file().

static void print_samplesref

(

AVFilterBufferRef *

samplesref

)

[static]

Definition at line 151 of file filtering_audio.c.

Referenced by main().

---

Variable Documentation

int audio_stream_index = -1 [static]

Definition at line 47 of file filtering_audio.c.

Referenced by main(), and open_input_file().

AVFilterContext* buffersink_ctx

Definition at line 44 of file filtering_audio.c.

AVFilterContext* buffersrc_ctx

Definition at line 45 of file filtering_audio.c.

AVCodecContext* dec_ctx [static]

Definition at line 43 of file filtering_audio.c.

Referenced by get_decoded_frame(), and show_stream().

const char* filter_descr = "aresample=8000,aconvert=s16:mono"

Definition at line 39 of file filtering_audio.c.

Referenced by main().

AVFilterGraph* filter_graph

Definition at line 46 of file filtering_audio.c.

AVFormatContext* fmt_ctx [static]

Definition at line 42 of file filtering_audio.c.

Referenced by close_input_file(), main(), open_input_file(), and probe_file().

const char* player = "ffplay -f s16le -ar 8000 -ac 1 -"

Definition at line 40 of file filtering_audio.c.

Referenced by main().