libavcore/samplefmt.h File Reference

#include "avcore.h"

Go to the source code of this file.

Enumerations
enum	AVSampleFormat {   AV_SAMPLE_FMT_NONE = -1, AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32,   AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_NB }
	all in native-endian format More...
Functions
const char *	av_get_sample_fmt_name (enum AVSampleFormat sample_fmt)
	Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
enum AVSampleFormat	av_get_sample_fmt (const char *name)
	Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE on error.
char *	av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
	Generate a string corresponding to the sample format with sample_fmt, or a header if sample_fmt is negative.
int	av_get_bits_per_sample_fmt (enum AVSampleFormat sample_fmt)
	Return sample format bits per sample.

---

Enumeration Type Documentation

enum AVSampleFormat

all in native-endian format

Enumerator:

AV_SAMPLE_FMT_NONE
AV_SAMPLE_FMT_U8	unsigned 8 bits
AV_SAMPLE_FMT_S16	signed 16 bits
AV_SAMPLE_FMT_S32	signed 32 bits
AV_SAMPLE_FMT_FLT	float
AV_SAMPLE_FMT_DBL	double
AV_SAMPLE_FMT_NB	Number of sample formats. DO NOT USE if dynamically linking to libavcore.

Definition at line 27 of file samplefmt.h.

---

Function Documentation

int av_get_bits_per_sample_fmt

(

enum AVSampleFormat

sample_fmt

)

Return sample format bits per sample.

Parameters:

sample_fmt

the sample format

Returns:

number of bits per sample or zero if unknown for the given sample format

Definition at line 66 of file samplefmt.c.

Referenced by audio_decode_frame(), av_audio_resample_init(), av_get_bits_per_sample_format(), avfilter_default_get_audio_buffer(), decode_frame(), decode_init(), do_audio_out(), mkv_write_tracks(), and output_packet().

enum AVSampleFormat av_get_sample_fmt

(

const char *

name

)

Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE on error.

Definition at line 43 of file samplefmt.c.

Referenced by avcodec_get_sample_fmt(), and opt_audio_sample_fmt().

const char* av_get_sample_fmt_name

(

enum AVSampleFormat

sample_fmt

)

Return the name of sample_fmt, or NULL if sample_fmt is not recognized.

Definition at line 36 of file samplefmt.c.

Referenced by audio_decode_frame(), av_audio_resample_init(), avcodec_get_sample_fmt_name(), avcodec_string(), do_audio_out(), ff_dprintf_link(), and print_digraph().

char* av_get_sample_fmt_string	(	char *	buf,
		int	buf_size,
		enum AVSampleFormat	sample_fmt
	)

Generate a string corresponding to the sample format with sample_fmt, or a header if sample_fmt is negative.

Parameters:

	buf	the buffer where to write the string
	buf_size	the size of buf
	sample_fmt	the number of the sample format to print the corresponding info string, or a negative value to print the corresponding header.

Returns:

the pointer to the filled buffer or NULL if sample_fmt is unknown or in case of other errors

Definition at line 53 of file samplefmt.c.

Referenced by avcodec_sample_fmt_string(), and opt_audio_sample_fmt().