ffmpeg-r/libavcodec/vqavideo.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "avcodec.h"
#include "dsputil.h"

Go to the source code of this file.

Data Structures
struct	VqaContext
Defines
#define	PALETTE_COUNT   256
#define	VQA_HEADER_SIZE   0x2A
#define	CHUNK_PREAMBLE_SIZE   8
#define	MAX_CODEBOOK_VECTORS   0xFF00
#define	SOLID_PIXEL_VECTORS   0x100
#define	MAX_VECTORS   (MAX_CODEBOOK_VECTORS + SOLID_PIXEL_VECTORS)
#define	MAX_CODEBOOK_SIZE   (MAX_VECTORS * 4 * 4)
#define	CBF0_TAG   MKBETAG('C', 'B', 'F', '0')
#define	CBFZ_TAG   MKBETAG('C', 'B', 'F', 'Z')
#define	CBP0_TAG   MKBETAG('C', 'B', 'P', '0')
#define	CBPZ_TAG   MKBETAG('C', 'B', 'P', 'Z')
#define	CPL0_TAG   MKBETAG('C', 'P', 'L', '0')
#define	CPLZ_TAG   MKBETAG('C', 'P', 'L', 'Z')
#define	VPTZ_TAG   MKBETAG('V', 'P', 'T', 'Z')
#define	VQA_DEBUG   0
#define	CHECK_COUNT()
Functions
static void	vqa_debug (const char *format,...)
static int	vqa_decode_init (AVCodecContext *avctx)
static void	decode_format80 (unsigned char *src, int src_size, unsigned char *dest, int dest_size, int check_size)
static void	vqa_decode_chunk (VqaContext *s)
static int	vqa_decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	vqa_decode_end (AVCodecContext *avctx)
Variables
AVCodec	vqa_decoder

---

Define Documentation

#define CBF0_TAG   MKBETAG('C', 'B', 'F', '0')

Definition at line 85 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define CBFZ_TAG   MKBETAG('C', 'B', 'F', 'Z')

Definition at line 86 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define CBP0_TAG   MKBETAG('C', 'B', 'P', '0')

Definition at line 87 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define CBPZ_TAG   MKBETAG('C', 'B', 'P', 'Z')

Definition at line 88 of file vqavideo.c.

Referenced by vqa_decode_chunk().

 

#define CHECK_COUNT

(

)

Value:

if (dest_index + count > dest_size) { \
        av_log(NULL, AV_LOG_ERROR, "  VQA video: decode_format80 problem: next op would overflow dest_index\n"); \
        av_log(NULL, AV_LOG_ERROR, "  VQA video: current dest_index = %d, count = %d, dest_size = %d\n", \
            dest_index, count, dest_size); \
        return; \
    }

Definition at line 197 of file vqavideo.c.

Referenced by decode_format80(), and mpegts_probe().

#define CHUNK_PREAMBLE_SIZE   8

Definition at line 76 of file vqavideo.c.

Referenced by ipmovie_read_header(), process_ipmovie_chunk(), and vqa_decode_chunk().

#define CPL0_TAG   MKBETAG('C', 'P', 'L', '0')

Definition at line 89 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define CPLZ_TAG   MKBETAG('C', 'P', 'L', 'Z')

Definition at line 90 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define MAX_CODEBOOK_SIZE   (MAX_VECTORS * 4 * 4)

Definition at line 83 of file vqavideo.c.

Referenced by vqa_decode_chunk(), and vqa_decode_init().

#define MAX_CODEBOOK_VECTORS   0xFF00

Definition at line 80 of file vqavideo.c.

#define MAX_VECTORS   (MAX_CODEBOOK_VECTORS + SOLID_PIXEL_VECTORS)

Definition at line 82 of file vqavideo.c.

#define PALETTE_COUNT   256

Definition at line 74 of file vqavideo.c.

Referenced by idcin_decode_frame(), ipvideo_decode_opcodes(), vmd_decode(), vmdvideo_decode_frame(), vmdvideo_decode_init(), vqa_decode_frame(), and wc3_read_packet().

#define SOLID_PIXEL_VECTORS   0x100

Definition at line 81 of file vqavideo.c.

#define VPTZ_TAG   MKBETAG('V', 'P', 'T', 'Z')

Definition at line 91 of file vqavideo.c.

Referenced by vqa_decode_chunk().

#define VQA_DEBUG   0

Definition at line 93 of file vqavideo.c.

#define VQA_HEADER_SIZE   0x2A

Definition at line 75 of file vqavideo.c.

Referenced by vqa_decode_init(), and wsvqa_read_header().

---

Function Documentation

static void decode_format80	(	unsigned char *	src,
		int	src_size,
		unsigned char *	dest,
		int	dest_size,
		int	check_size
	)			[static]

Definition at line 205 of file vqavideo.c.

Referenced by vqa_decode_chunk().

static void vqa_debug	(	const char *	format,
			...
	)			[inline, static]

Definition at line 98 of file vqavideo.c.

Referenced by decode_format80().

static void vqa_decode_chunk

(

VqaContext *

s

)

[static]

Definition at line 296 of file vqavideo.c.

Referenced by vqa_decode_frame().

static int vqa_decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 598 of file vqavideo.c.

static int vqa_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 568 of file vqavideo.c.

static int vqa_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 132 of file vqavideo.c.

---

Variable Documentation

AVCodec vqa_decoder

Initial value:

 {
    "vqavideo",
    CODEC_TYPE_VIDEO,
    CODEC_ID_WS_VQA,
    sizeof(VqaContext),
    vqa_decode_init,
    NULL,
    vqa_decode_end,
    vqa_decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 612 of file vqavideo.c.