svq1dec.c File Reference

Go to the source code of this file.

Classes
struct	svq1_pmv_s
Typedefs
typedef struct svq1_pmv_s	svq1_pmv_t
Functions
static int	svq1_decode_block_intra (GetBitContext *bitbuf, uint8_t *pixels, int pitch)
static int	svq1_decode_block_non_intra (GetBitContext *bitbuf, uint8_t *pixels, int pitch)
static int	svq1_decode_motion_vector (GetBitContext *bitbuf, svq1_pmv_t *mv, svq1_pmv_t **pmv)
static void	svq1_skip_block (uint8_t *current, uint8_t *previous, int pitch, int x, int y)
static int	svq1_motion_inter_block (MpegEncContext *s, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, int x, int y)
static int	svq1_motion_inter_4v_block (MpegEncContext *s, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, int x, int y)
static int	svq1_decode_delta_block (MpegEncContext *s, GetBitContext *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, int x, int y)
static uint16_t	svq1_packet_checksum (uint8_t *data, int length, int value)
static void	svq1_parse_string (GetBitContext *bitbuf, uint8_t *out)
static int	svq1_decode_frame_header (GetBitContext *bitbuf, MpegEncContext *s)
static int	svq1_decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	svq1_decode_init (AVCodecContext *avctx)
static int	svq1_decode_end (AVCodecContext *avctx)
Variables
const uint8_t	mvtab [33][2]
static VLC	svq1_block_type
static VLC	svq1_motion_component
static VLC	svq1_intra_multistage [6]
static VLC	svq1_inter_multistage [6]
static VLC	svq1_intra_mean
static VLC	svq1_inter_mean
static const uint16_t	checksum_table [256]
static const uint8_t	string_table [256]
AVCodec	svq1_decoder

---

Typedef Documentation

typedef struct svq1_pmv_s svq1_pmv_t

---

Function Documentation

static int svq1_decode_block_intra	(	GetBitContext *	bitbuf,
		uint8_t *	pixels,
		int	pitch
	)			[static]

Definition at line 206 of file svq1dec.c.

Referenced by svq1_decode_delta_block(), and svq1_decode_frame().

static int svq1_decode_block_non_intra	(	GetBitContext *	bitbuf,
		uint8_t *	pixels,
		int	pitch
	)			[static]

Definition at line 261 of file svq1dec.c.

Referenced by svq1_decode_delta_block().

static int svq1_decode_motion_vector	(	GetBitContext *	bitbuf,
		svq1_pmv_t *	mv,
		svq1_pmv_t **	pmv
	)			[static]

Definition at line 304 of file svq1dec.c.

Referenced by svq1_motion_inter_4v_block(), and svq1_motion_inter_block().

static void svq1_skip_block	(	uint8_t *	current,
		uint8_t *	previous,
		int	pitch,
		int	x,
		int	y
	)			[static]

Definition at line 328 of file svq1dec.c.

Referenced by svq1_decode_delta_block().

static int svq1_motion_inter_block	(	MpegEncContext *	s,
		GetBitContext *	bitbuf,
		uint8_t *	current,
		uint8_t *	previous,
		int	pitch,
		svq1_pmv_t *	motion,
		int	x,
		int	y
	)			[static]

Definition at line 343 of file svq1dec.c.

Referenced by svq1_decode_delta_block().

static int svq1_motion_inter_4v_block	(	MpegEncContext *	s,
		GetBitContext *	bitbuf,
		uint8_t *	current,
		uint8_t *	previous,
		int	pitch,
		svq1_pmv_t *	motion,
		int	x,
		int	y
	)			[static]

Definition at line 395 of file svq1dec.c.

Referenced by svq1_decode_delta_block().

static int svq1_decode_delta_block	(	MpegEncContext *	s,
		GetBitContext *	bitbuf,
		uint8_t *	current,
		uint8_t *	previous,
		int	pitch,
		svq1_pmv_t *	motion,
		int	x,
		int	y
	)			[static]

Definition at line 485 of file svq1dec.c.

Referenced by svq1_decode_frame().

static uint16_t svq1_packet_checksum	(	uint8_t *	data,
		int	length,
		int	value
	)			[static]

Definition at line 543 of file svq1dec.c.

Referenced by svq1_decode_frame_header().

static void svq1_parse_string	(	GetBitContext *	bitbuf,
		uint8_t *	out
	)			[static]

Definition at line 553 of file svq1dec.c.

Referenced by svq1_decode_frame_header().

static int svq1_decode_frame_header	(	GetBitContext *	bitbuf,
		MpegEncContext *	s
	)			[static]

Definition at line 567 of file svq1dec.c.

Referenced by svq1_decode_frame().

static int svq1_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 642 of file svq1dec.c.

static int svq1_decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 764 of file svq1dec.c.

static int svq1_decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 808 of file svq1dec.c.

---

Variable Documentation

const uint8_t mvtab[33][2]

Definition at line 109 of file h263data.h.

Referenced by ff_h263_encode_motion(), ff_msmpeg4_decode_init(), h263_decode_init_vlc(), h263_get_motion_length(), init_mv_penalty_and_fcode(), msmpeg4v2_encode_motion(), and svq1_decode_init().

VLC svq1_block_type [static]

Definition at line 48 of file svq1dec.c.

VLC svq1_motion_component [static]

Definition at line 49 of file svq1dec.c.

VLC svq1_intra_multistage[6] [static]

Definition at line 50 of file svq1dec.c.

VLC svq1_inter_multistage[6] [static]

Definition at line 51 of file svq1dec.c.

VLC svq1_intra_mean [static]

Definition at line 52 of file svq1dec.c.

VLC svq1_inter_mean [static]

Definition at line 53 of file svq1dec.c.

const uint16_t checksum_table[256] [static]

Definition at line 61 of file svq1dec.c.

Referenced by svq1_packet_checksum().

const uint8_t string_table[256] [static]

Definition at line 96 of file svq1dec.c.

Referenced by svq1_parse_string().

AVCodec svq1_decoder

Initial value:

 {
    "svq1",
    CODEC_TYPE_VIDEO,
    CODEC_ID_SVQ1,
    sizeof(MpegEncContext),
    svq1_decode_init,
    NULL,
    svq1_decode_end,
    svq1_decode_frame,
    CODEC_CAP_DR1,
    .flush= ff_mpeg_flush,
    .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV410P, -1},
}

Definition at line 817 of file svq1dec.c.