eamad.c File Reference

Electronic Arts Madcow Video Decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "aandcttab.h"
#include "eaidct.h"
#include "internal.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 */

Functions
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, AVFrame *frame, int mb_x, int mb_y, int j, int mv_x, int mv_y, int add)
static void	idct_put (MadContext *t, AVFrame *frame, int16_t *block, int mb_x, int mb_y, int j)
static int	decode_block_intra (MadContext *s, int16_t *block)
static int	decode_motion (GetBitContext *gb)
static int	decode_mb (MadContext *s, AVFrame *frame, int inter)
static void	calc_quant_matrix (MadContext *s, int qscale)
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, 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 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().

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

Definition at line 43 of file eamad.c.

Referenced by decode_frame().

Function Documentation

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 59 of file eamad.c.

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

inlinestatic

Definition at line 76 of file eamad.c.

Referenced by av_get_padded_bits_per_pixel(), av_image_fill_max_pixsteps(), av_read_image_line(), av_write_image_line(), bmp_decode_frame(), comp_block(), config_props(), decode_component(), dirac_decode_frame_internal(), ff_blend_mask(), ff_blend_rectangle(), ff_get_unscaled_swscale(), fill_coding_method_array(), filter_frame(), init_noise(), init_tile(), interleave_compare_dts(), jpeg2000_dec_cleanup(), jpeg2000_decode_tile(), ls_decode_line(), ls_encode_line(), ls_encode_run(), noise(), swr_next_pts(), vp5_parse_vector_adjustment(), vp5_parse_vector_models(), vp6_parse_vector_adjustment(), and vp6_parse_vector_models().

static void comp_block ( MadContext *  t, AVFrame *  frame, int  mb_x, int  mb_y, int  j, int  mv_x, int  mv_y, int  add  )

inlinestatic

Definition at line 85 of file eamad.c.

Referenced by decode_mb().

static void idct_put ( MadContext *  t, AVFrame *  frame, int16_t *  block, int  mb_x, int  mb_y, int  j  )

inlinestatic

Definition at line 109 of file eamad.c.

Referenced by decode_mb().

static int decode_block_intra ( MadContext *  s, int16_t *  block  )

inlinestatic

Definition at line 124 of file eamad.c.

Referenced by decode_mb().

static int decode_motion ( GetBitContext *  gb )

static

Definition at line 184 of file eamad.c.

Referenced by decode_mb().

static int decode_mb ( MadContext *  s, AVFrame *  frame, int  inter  )

static

Definition at line 195 of file eamad.c.

Referenced by decode_frame().

static void calc_quant_matrix ( MadContext *  s, int  qscale  )

static

Definition at line 225 of file eamad.c.

Referenced by decode_frame().

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

static

Definition at line 234 of file eamad.c.

static av_cold int decode_end ( AVCodecContext *  avctx )

static

Definition at line 319 of file eamad.c.

Variable Documentation

AVCodec ff_eamad_decoder

Initial value:

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

Definition at line 327 of file eamad.c.