Silicon Graphics Motion Video Compressor 1 & 2 decoder. More...

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"

Include dependency graph for mvcdec.c:

Data Structures
struct	MvcContext

Macros
#define	PIX16(target, true, false)

#define	ROW16(row, a1, a0, b1, b0)

#define	PIX32(target, true, false)

#define	ROW32(row, a1, a0, b1, b0)

#define	MVC2_BLOCK

Typedefs
typedef struct MvcContext	MvcContext

Functions
static av_cold int	mvc_decode_init (AVCodecContext *avctx)

static int	decode_mvc1 (AVCodecContext avctx, GetByteContext gb, uint8_t *dst_start, int width, int height, int linesize)

static void	set_4x4_block (uint8_t *dst, int linesize, uint32_t pixel)

static int	decode_mvc2 (AVCodecContext avctx, GetByteContext gb, uint8_t *dst_start, int width, int height, int linesize, int vflip)

static int	mvc_decode_frame (AVCodecContext avctx, void data, int got_frame, AVPacket avpkt)

static av_cold int	mvc_decode_end (AVCodecContext *avctx)

Detailed Description

Silicon Graphics Motion Video Compressor 1 & 2 decoder.

Definition in file mvcdec.c.

Macro Definition Documentation

#define MVC2_BLOCK

Value:

ROW32(0, 1, 0, 3, 2); \
    ROW32(1, 1, 0, 3, 2); \
    ROW32(2, 5, 4, 7, 6); \
    ROW32(3, 5, 4, 7, 6);

Definition at line 132 of file mvcdec.c.

Referenced by decode_mvc2().

#define PIX16	(	target,
		true,
		false
	)

Value:

i = (mask & target) ? true : false; \
        AV_WN16A(dst, (v[i] & 0x7C00) | (v[i] & 0x3E0) | (v[i] & 0x1F)); \
        dst += 2;

#define PIX32	(	target,
		true,
		false
	)

Value:

AV_WN32A(dst, (mask & target) ? v[true] : v[false]); \

dst += 4;

v

float v

Definition: avf_showspectrum.c:88

AV_WN32A

#define AV_WN32A(p, v)

Definition: intreadwrite.h:530

mask

static const uint16_t mask[17]

Definition: lzw.c:37

dst

else dst[i][x+y *dst_stride[i]]

Definition: vf_mcdeint.c:160

Definition at line 121 of file mvcdec.c.

#define ROW16	(	row,
		a1,
		a0,
		b1,
		b0
	)

Value:

dst = dst_start + (y + row) * linesize + x * 2; \
        PIX16(1 << (row * 4),     a1, a0) \
        PIX16(1 << (row * 4 + 1), a1, a0) \
        PIX16(1 << (row * 4 + 2), b1, b0) \
        PIX16(1 << (row * 4 + 3), b1, b0)

Referenced by decode_mvc1().

#define ROW32	(	row,
		a1,
		a0,
		b1,
		b0
	)

Value:

dst = dst_start + (y + row) * linesize + x * 4; \
    PIX32(1 << (row * 4),     a1, a0) \
    PIX32(1 << (row * 4 + 1), a1, a0) \
    PIX32(1 << (row * 4 + 2), b1, b0) \
    PIX32(1 << (row * 4 + 3), b1, b0)