pjmedia_wave_hdr Struct Reference
[WAVE Header]

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Detailed Description

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

Data Fields
struct {
pj_uint32_t   riff
pj_uint32_t   file_len
pj_uint32_t   wave
}	riff_hdr
struct {
pj_uint32_t   fmt
pj_uint32_t   len
pj_uint16_t   fmt_tag
pj_uint16_t   nchan
pj_uint32_t   sample_rate
pj_uint32_t   bytes_per_sec
pj_uint16_t   block_align
pj_uint16_t   bits_per_sample
}	fmt_hdr
struct {
pj_uint32_t   data
pj_uint32_t   len
}	data_hdr

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Field Documentation

pj_uint32_t pjmedia_wave_hdr::riff

"RIFF" ASCII tag.

pj_uint32_t pjmedia_wave_hdr::file_len

File length minus 8 bytes

pj_uint32_t pjmedia_wave_hdr::wave

"WAVE" ASCII tag.

struct { ... } pjmedia_wave_hdr::riff_hdr

This structure describes RIFF WAVE file header

pj_uint32_t pjmedia_wave_hdr::fmt

"fmt " ASCII tag.

pj_uint32_t pjmedia_wave_hdr::len

16 for PCM.

Data length.

pj_uint16_t pjmedia_wave_hdr::fmt_tag

1 for PCM

pj_uint16_t pjmedia_wave_hdr::nchan

Number of channels.

pj_uint32_t pjmedia_wave_hdr::sample_rate

Sampling rate.

pj_uint32_t pjmedia_wave_hdr::bytes_per_sec

Average bytes per second.

pj_uint16_t pjmedia_wave_hdr::block_align

nchannels * bits / 8

pj_uint16_t pjmedia_wave_hdr::bits_per_sample

Bits per sample.

struct { ... } pjmedia_wave_hdr::fmt_hdr

This structure describes format chunks/header

pj_uint32_t pjmedia_wave_hdr::data

"data" ASCII tag.

struct { ... } pjmedia_wave_hdr::data_hdr

The data header preceeds the actual data in the file.

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The documentation for this struct was generated from the following file:

• wave.h