libavcodec/eamad.c File Reference

Electronic Arts Madcow Video Decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
#include "aandcttab.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "libavutil/imgutils.h"

Go to the source code of this file.

Data Structures
struct	MadContext
Defines
#define	EA_PREAMBLE_SIZE   8
#define	MADk_TAG   MKTAG('M', 'A', 'D', 'k')
#define	MADm_TAG   MKTAG('M', 'A', 'D', 'm')
#define	MADe_TAG   MKTAG('M', 'A', 'D', 'e')
Typedefs
typedef struct MadContext	MadContext
Functions
static void	bswap16_buf (uint16_t *dst, const uint16_t *src, int count)
static av_cold int	decode_init (AVCodecContext *avctx)
static void	comp (unsigned char *dst, int dst_stride, unsigned char *src, int src_stride, int add)
static void	comp_block (MadContext *t, int mb_x, int mb_y, int j, int mv_x, int mv_y, int add)
static void	idct_put (MadContext *t, DCTELEM *block, int mb_x, int mb_y, int j)
static void	decode_block_intra (MadContext *t, DCTELEM *block)
static int	decode_motion (GetBitContext *gb)
static void	decode_mb (MadContext *t, int inter)
static void	calc_intra_matrix (MadContext *t, int qscale)
static int	decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static av_cold int	decode_end (AVCodecContext *avctx)
Variables
AVCodec	ff_eamad_decoder

---

Detailed Description

Electronic Arts Madcow Video Decoder.

Author:

Peter Ross <pross@xvid.org>

See also:

technical details at http://wiki.multimedia.cx/index.php?title=Electronic_Arts_MAD

Definition in file eamad.c.

---

Define Documentation

#define EA_PREAMBLE_SIZE   8

Definition at line 39 of file eamad.c.

#define MADe_TAG   MKTAG('M', 'A', 'D', 'e')

Definition at line 42 of file eamad.c.

Referenced by decode_frame().

#define MADk_TAG   MKTAG('M', 'A', 'D', 'k')

Definition at line 40 of file eamad.c.

#define MADm_TAG   MKTAG('M', 'A', 'D', 'm')

Definition at line 41 of file eamad.c.

Referenced by decode_frame().

---

Typedef Documentation

typedef struct MadContext MadContext

---

Function Documentation

static void bswap16_buf	(	uint16_t *	dst,
		const uint16_t *	src,
		int	count
	)			[static]

Definition at line 53 of file eamad.c.

Referenced by decode_frame().

static void calc_intra_matrix	(	MadContext *	t,
		int	qscale
	)			[static]

Definition at line 217 of file eamad.c.

Referenced by decode_frame().

static void comp	(	unsigned char *	dst,
		int	dst_stride,
		unsigned char *	src,
		int	src_stride,
		int	add
	)			[inline, static]

Definition at line 74 of file eamad.c.

Referenced by av_image_fill_max_pixsteps(), av_read_image_line(), av_write_image_line(), comp_block(), do_audio_out(), ff_interleave_compare_dts(), and find_c_packed_planar_out_funcs().

static void comp_block	(	MadContext *	t,
		int	mb_x,
		int	mb_y,
		int	j,
		int	mv_x,
		int	mv_y,
		int	add
	)			[inline, static]

Definition at line 83 of file eamad.c.

Referenced by decode_mb().

static void decode_block_intra	(	MadContext *	t,
		DCTELEM *	block
	)			[inline, static]

Definition at line 116 of file eamad.c.

Referenced by decode_mb().

static av_cold int decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 298 of file eamad.c.

static int decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		AVPacket *	avpkt
	)			[static]

Definition at line 233 of file eamad.c.

static av_cold int decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 60 of file eamad.c.

static void decode_mb	(	MadContext *	t,
		int	inter
	)			[static]

Definition at line 187 of file eamad.c.

Referenced by decode_frame().

static int decode_motion

(

GetBitContext *

gb

)

[static]

Definition at line 176 of file eamad.c.

Referenced by decode_mb().

static void idct_put	(	MadContext *	t,
		DCTELEM *	block,
		int	mb_x,
		int	mb_y,
		int	j
	)			[inline, static]

Definition at line 101 of file eamad.c.

Referenced by decode_mb().

---

Variable Documentation

AVCodec ff_eamad_decoder

Initial value:

 {
    .name           = "eamad",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_MAD,
    .priv_data_size = sizeof(MadContext),
    .init           = decode_init,
    .close          = decode_end,
    .decode         = decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Madcow Video")
}

Definition at line 309 of file eamad.c.