eamad.c File Reference

Electronic Arts Madcow Video Decoder. More...

#include "avcodec.h"
#include "bytestream.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

Macros

#define EA_PREAMBLE_SIZE   8
#define MADk_TAG   MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */
#define MADm_TAG   MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */
#define MADe_TAG   MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */

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.nosp@m.@xvi.nosp@m.d.org
See Also
technical details at http://wiki.multimedia.cx/index.php?title=Electronic_Arts_MAD

Definition in file eamad.c.

Macro Definition Documentation

#define EA_PREAMBLE_SIZE   8

Definition at line 40 of file eamad.c.

#define MADe_TAG   MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */

Definition at line 43 of file eamad.c.

Referenced by decode_frame().

#define MADk_TAG   MKTAG('M', 'A', 'D', 'k') /* MAD i-frame */

Definition at line 41 of file eamad.c.

#define MADm_TAG   MKTAG('M', 'A', 'D', 'm') /* MAD p-frame */

Definition at line 42 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 54 of file eamad.c.

Referenced by decode_frame().

static void calc_intra_matrix ( MadContext t,
int  qscale 
)
static

Definition at line 224 of file eamad.c.

Referenced by decode_frame().

static void comp_block ( MadContext t,
int  mb_x,
int  mb_y,
int  j,
int  mv_x,
int  mv_y,
int  add 
)
inlinestatic

Definition at line 84 of file eamad.c.

Referenced by decode_mb().

static void decode_block_intra ( MadContext t,
DCTELEM block 
)
inlinestatic

Definition at line 117 of file eamad.c.

Referenced by decode_mb().

static av_cold int decode_end ( AVCodecContext avctx)
static

Definition at line 308 of file eamad.c.

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

Definition at line 240 of file eamad.c.

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 61 of file eamad.c.

static void decode_mb ( MadContext t,
int  inter 
)
static

Definition at line 194 of file eamad.c.

Referenced by decode_frame().

static int decode_motion ( GetBitContext gb)
static

Definition at line 183 of file eamad.c.

Referenced by decode_mb().

static void idct_put ( MadContext t,
DCTELEM block,
int  mb_x,
int  mb_y,
int  j 
)
inlinestatic

Definition at line 102 of file eamad.c.

Referenced by decode_mb().

Variable Documentation

AVCodec ff_eamad_decoder
Initial value:
{
.name = "eamad",
.id = CODEC_ID_MAD,
.priv_data_size = sizeof(MadContext),
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Madcow Video")
}

Definition at line 319 of file eamad.c.