Group PJMEDIA_AVI

group PJMEDIA_AVI

Representation of RIFF/AVI file format.

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

Defines

PJMEDIA_AVI_MAX_NUM_STREAMS

Enums

enum pjmedia_avi_tag

Values:

enumerator PJMEDIA_AVI_RIFF_TAG

enumerator PJMEDIA_AVI_AVI_TAG

enumerator PJMEDIA_AVI_HDRL_TAG

enumerator PJMEDIA_AVI_AVIH_TAG

enumerator PJMEDIA_AVI_STRL_TAG

enumerator PJMEDIA_AVI_STRH_TAG

enumerator PJMEDIA_AVI_AUDS_TAG

enumerator PJMEDIA_AVI_VIDS_TAG

enumerator PJMEDIA_AVI_STRF_TAG

enumerator PJMEDIA_AVI_MOVI_TAG

enumerator PJMEDIA_AVI_LIST_TAG

enumerator PJMEDIA_AVI_JUNK_TAG

Variables

static const char avi_tags[][4] = {{'R', 'I', 'F', 'F'}, {'A', 'V', 'I', ' '}, {'h', 'd', 'r', 'l'}, {'a', 'v', 'i', 'h'}, {'s', 't', 'r', 'l'}, {'s', 't', 'r', 'h'}, {'a', 'u', 'd', 's'}, {'v', 'i', 'd', 's'}, {'s', 't', 'r', 'f'}, {'m', 'o', 'v', 'i'}, {'L', 'I', 'S', 'T'}, {'J', 'U', 'N', 'K'},}

static const pj_uint8_t strf_audio_hdr_sizes[] = {8, 4, 8, 6}: Sizes of strf_audio_hdr_t struct, started by the size (in bytes) of 32-bits struct members, alternated with the size of 16-bits members.

static const pj_uint8_t strf_video_hdr_sizes[] = {20, 4, 24}

struct riff_hdr_t

#include <avi.h>

These types describe the simpler/canonical version of an AVI file. They do not support the full AVI RIFF format specification. This structure describes RIFF AVI file header

Public Members

pj_uint32_t riff: “RIFF” ASCII tag.

pj_uint32_t file_len: File length minus 8 bytes

pj_uint32_t avi: “AVI” ASCII tag.

struct avih_hdr_t

#include <avi.h>

This structure describes avih header

Public Members

pj_uint32_t usec_per_frame: microsecs between frames

struct strl_hdr_t

#include <avi.h>

This structure describes strl header

Public Members

pj_uint32_t bogus_priority_language: Do not access this data

pj_uint32_t bogus_frame[2]: Do not access this data

struct strf_audio_hdr_t

Public Members

pj_uint16_t fmt_tag: 1 for PCM

pj_uint16_t nchannels: Number of channels.

pj_uint32_t sample_rate: Sampling rate.

pj_uint32_t bytes_per_sec: Average bytes per second.

pj_uint16_t block_align: nchannels * bits / 8

pj_uint16_t bits_per_sample: Bits per sample.

struct strf_video_hdr_t

struct pjmedia_avi_hdr