astcdec.c File Reference

ASTC (Adaptive Scalable Texture Compression) demuxer. More...

#include "config_components.h"
#include <inttypes.h>
#include <limits.h>
#include "avformat.h"
#include "avio.h"
#include "avio_internal.h"
#include "demux.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"

Go to the source code of this file.

Data Structures
struct	ASTCDemuxerContext

Macros
#define	ASTC_HEADER_SIZE   16
#define	ASTC_BLOCK_BYTES   16

Functions
static int	astc_probe (const AVProbeData *p)
static int	astc_read_header (AVFormatContext *s)
static int	astc_read_packet (AVFormatContext *s, AVPacket *pkt)

Variables
static const uint8_t	astc_magic [4] = { 0x13, 0xAB, 0xA1, 0x5C }
const FFInputFormat	ff_astc_demuxer

Detailed Description

ASTC (Adaptive Scalable Texture Compression) demuxer.

Reads the 16-byte .astc header, exposes it as extradata to the decoder, and emits the raw ASTC bitstream as a single packet.

Definition in file astcdec.c.

Macro Definition Documentation

ASTC_HEADER_SIZE

#define ASTC_HEADER_SIZE   16

Definition at line 42 of file astcdec.c.

ASTC_BLOCK_BYTES

#define ASTC_BLOCK_BYTES   16

Definition at line 43 of file astcdec.c.

Function Documentation

astc_probe()

static int astc_probe ( const AVProbeData * p )

static

Definition at line 51 of file astcdec.c.

astc_read_header()

static int astc_read_header ( AVFormatContext * s )

static

Definition at line 59 of file astcdec.c.

astc_read_packet()

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

static

Definition at line 127 of file astcdec.c.

Variable Documentation

astc_magic

const uint8_t astc_magic[4] = { 0x13, 0xAB, 0xA1, 0x5C }

static

Definition at line 44 of file astcdec.c.

Referenced by astc_probe(), astc_read_header(), ktx_read_header(), and ktx_write_header().

ff_astc_demuxer

const FFInputFormat ff_astc_demuxer

Initial value:

= {
    .p.name         = "astc",
    .p.long_name    = NULL_IF_CONFIG_SMALL("ASTC (Adaptive Scalable Texture Compression)"),
    .p.mime_type    = "image/astc",
    .p.extensions   = "astc",
    .p.flags        = AVFMT_NOTIMESTAMPS,
    .priv_data_size = sizeof(ASTCDemuxerContext),
    .read_probe     = astc_probe,
    .read_header    = astc_read_header,
    .read_packet    = astc_read_packet,
}

Definition at line 165 of file astcdec.c.