qcp.c File Reference

QCP format (.qcp) demuxer. More...

#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "avformat.h"

Include dependency graph for qcp.c:

Go to the source code of this file.

Data Structures
struct	QCPContext

Macros
#define	QCP_MAX_MODE   4

Functions
static int	is_qcelp_13k_guid (const uint8_t *guid)
static int	qcp_probe (AVProbeData *pd)
static int	qcp_read_header (AVFormatContext *s)
static int	qcp_read_packet (AVFormatContext *s, AVPacket *pkt)

Variables
static const uint8_t	guid_qcelp_13k_part [15]
	Last 15 out of 16 bytes of QCELP-13K GUID, as stored in the file; the first byte of the GUID can be either 0x41 or 0x42. More...
static const uint8_t	guid_evrc [16]
	EVRC GUID as stored in the file. More...
static const uint8_t	guid_smv [16]
	SMV GUID as stored in the file. More...
AVInputFormat	ff_qcp_demuxer

Detailed Description

QCP format (.qcp) demuxer.

Author

Kenan Gillet

See also

RFC 3625: "The QCP File Format and Media Types for Speech Data" http://tools.ietf.org/html/rfc3625

Definition in file qcp.c.

Macro Definition Documentation

#define QCP_MAX_MODE   4

Definition at line 37 of file qcp.c.

Referenced by qcp_read_header(), and qcp_read_packet().

Function Documentation

static int is_qcelp_13k_guid ( const uint8_t *  guid )

static

Parameters

guid	contains at least 16 bytes

Returns

1 if the guid is a qcelp_13k guid, 0 otherwise

Definition at line 71 of file qcp.c.

Referenced by qcp_read_header().

static int qcp_probe ( AVProbeData *  pd )

static

Definition at line 76 of file qcp.c.

static int qcp_read_header ( AVFormatContext *  s )

static

Definition at line 84 of file qcp.c.

static int qcp_read_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 136 of file qcp.c.

Variable Documentation

AVInputFormat ff_qcp_demuxer

Initial value:

= {
    .name           = "qcp",
    .long_name      = NULL_IF_CONFIG_SMALL("QCP"),
    .priv_data_size = sizeof(QCPContext),
    .read_probe     = qcp_probe,
    .read_header    = qcp_read_header,
    .read_packet    = qcp_read_packet,
}

Definition at line 189 of file qcp.c.

const uint8_t guid_evrc[16]

static

Initial value:

= {
    0x8d, 0xd4, 0x89, 0xe6, 0x76, 0x90, 0xb5, 0x46,
    0x91, 0xef, 0x73, 0x6a, 0x51, 0x00, 0xce, 0xb4
}

EVRC GUID as stored in the file.

Definition at line 54 of file qcp.c.

Referenced by qcp_read_header().

const uint8_t guid_qcelp_13k_part[15]

static

Initial value:

= {
    0x6d, 0x7f, 0x5e, 0x15, 0xb1, 0xd0, 0x11, 0xba,
    0x91, 0x00, 0x80, 0x5f, 0xb4, 0xb9, 0x7e
}

Last 15 out of 16 bytes of QCELP-13K GUID, as stored in the file; the first byte of the GUID can be either 0x41 or 0x42.

Definition at line 46 of file qcp.c.

Referenced by is_qcelp_13k_guid().

const uint8_t guid_smv[16]

static

Initial value:

= {
    0x75, 0x2b, 0x7c, 0x8d, 0x97, 0xa7, 0x49, 0xed,
    0x98, 0x5e, 0xd5, 0x3c, 0x8c, 0xc7, 0x5f, 0x84
}

SMV GUID as stored in the file.

Definition at line 62 of file qcp.c.

Referenced by qcp_read_header().