Group PJMEDIA_WAVE

group PJMEDIA_WAVE

Representation of RIFF/WAVE file format.

This the the low level representation of RIFF/WAVE file format. For higher abstraction, please see WAV File Player and File Writer (Recorder).

Defines

PJMEDIA_RIFF_TAG

Standard RIFF tag to identify RIFF file format in the WAVE header.

PJMEDIA_WAVE_TAG

Standard WAVE tag to identify WAVE header.

PJMEDIA_FMT_TAG

Standard FMT tag to identify format chunks.

PJMEDIA_DATA_TAG

Standard DATA tag to identify data chunks.

PJMEDIA_FACT_TAG

Standard FACT tag to identify fact chunks.

PJMEDIA_WAVE_NORMALIZE_SUBCHUNK(ch)

Normalize subchunk header from little endian (the representation of RIFF file) into host’s endian.

Enums

enum pjmedia_wave_fmt_tag

Enumeration of format compression tag.

Values:

enumerator PJMEDIA_WAVE_FMT_TAG_PCM

enumerator PJMEDIA_WAVE_FMT_TAG_ALAW

enumerator PJMEDIA_WAVE_FMT_TAG_ULAW

Functions

void pjmedia_wave_hdr_file_to_host(pjmedia_wave_hdr *hdr)

On big-endian hosts, this function swaps the byte order of the values in the WAVE header fields. On little-endian hosts, this function does nothing.

Application SHOULD call this function after reading the WAVE header chunks from a file.

Parameters

hdr – The WAVE header.

void pjmedia_wave_hdr_host_to_file(pjmedia_wave_hdr *hdr)

On big-endian hosts, this function swaps the byte order of the values in the WAVE header fields. On little-endian hosts, this function does nothing.

Application SHOULD call this function before writing the WAVE header to a file.

Parameters

hdr – The WAVE header.

struct pjmedia_wave_hdr

#include <wave.h>

This file describes the simpler/canonical version of a WAVE file. It does not support the full RIFF format specification.

See

pjmedia_wave_hdr

struct pjmedia_wave_subchunk

#include <wave.h>

This structure describes generic RIFF subchunk header.