mv30.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bytestream.h"
#include "copy_block.h"
#include "mathops.h"
#include "blockdsp.h"
#include "get_bits.h"
#include "internal.h"
#include "aandcttab.h"

Go to the source code of this file.

Data Structures
struct	MV30Context

Macros
#define	CBP_VLC_BITS   9

Functions
static void	get_qtable (int16_t *table, int quant, const uint8_t *quant_tab)
static void	idct_1d (unsigned *blk, int step)
static void	idct_put (uint8_t *dst, int stride, int *block)
static void	idct_add (uint8_t *dst, int stride, const uint8_t *src, int in_linesize, int *block)
static void	idct2_1d (int *blk, int step)
static void	idct2_put (uint8_t *dst, int stride, int *block)
static void	idct2_add (uint8_t *dst, int stride, const uint8_t *src, int in_linesize, int *block)
static void	update_inter_block (uint8_t *dst, int stride, const uint8_t *src, int in_linesize, int block)
static int	decode_intra_block (AVCodecContext *avctx, int mode, GetByteContext *gbyte, int16_t *qtab, int *block, int *pfill, uint8_t *dst, int linesize)
static int	decode_inter_block (AVCodecContext *avctx, int mode, GetByteContext *gbyte, int16_t *qtab, int *block, int *pfill, uint8_t *dst, int linesize, const uint8_t *src, int in_linesize)
static int	decode_coeffs (GetBitContext *gb, int16_t *coeffs, int nb_codes)
static int	decode_intra (AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame)
static int	decode_inter (AVCodecContext *avctx, GetBitContext *gb, AVFrame *frame, AVFrame *prev)
static int	decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold void	init_static_data (void)
static av_cold int	decode_init (AVCodecContext *avctx)
static void	decode_flush (AVCodecContext *avctx)
static av_cold int	decode_close (AVCodecContext *avctx)

Variables
static VLC	cbp_tab
static const uint8_t	luma_tab []
static const uint8_t	chroma_tab []
static const uint8_t	zigzag []
static const uint8_t	cbp_bits []
AVCodec	ff_mv30_decoder

Macro Definition Documentation

CBP_VLC_BITS

#define CBP_VLC_BITS   9

Definition at line 38 of file mv30.c.

Function Documentation

get_qtable()

static void get_qtable ( int16_t *  table, int  quant, const uint8_t *  quant_tab  )

static

Definition at line 97 of file mv30.c.

Referenced by decode_frame().

idct_1d()

static void idct_1d ( unsigned *  blk, int  step  )

inlinestatic

Definition at line 107 of file mv30.c.

Referenced by idct_add(), and idct_put().

idct_put()

static void idct_put ( uint8_t *  dst, int  stride, int *  block  )

static

Definition at line 137 of file mv30.c.

Referenced by decode_intra_block().

idct_add()

static void idct_add ( uint8_t *  dst, int  stride, const uint8_t *  src, int  in_linesize, int *  block  )

static

Definition at line 168 of file mv30.c.

Referenced by decode_inter_block(), hl_decode_mb(), hl_decode_mb_idct_luma(), and hl_decode_mb_predict_luma().

idct2_1d()

static void idct2_1d ( int *  blk, int  step  )

inlinestatic

Definition at line 201 of file mv30.c.

Referenced by idct2_add(), and idct2_put().

idct2_put()

static void idct2_put ( uint8_t *  dst, int  stride, int *  block  )

static

Definition at line 220 of file mv30.c.

Referenced by decode_intra_block().

idct2_add()

static void idct2_add ( uint8_t *  dst, int  stride, const uint8_t *  src, int  in_linesize, int *  block  )

static

Definition at line 250 of file mv30.c.

Referenced by decode_inter_block().

update_inter_block()

static void update_inter_block ( uint8_t *  dst, int  stride, const uint8_t *  src, int  in_linesize, int  block  )

static

Definition at line 283 of file mv30.c.

Referenced by decode_inter_block().

decode_intra_block()

static int decode_intra_block ( AVCodecContext *  avctx, int  mode, GetByteContext *  gbyte, int16_t *  qtab, int *  block, int *  pfill, uint8_t *  dst, int  linesize  )

static

Definition at line 295 of file mv30.c.

Referenced by decode_inter(), and decode_intra().

decode_inter_block()

static int decode_inter_block ( AVCodecContext *  avctx, int  mode, GetByteContext *  gbyte, int16_t *  qtab, int *  block, int *  pfill, uint8_t *  dst, int  linesize, const uint8_t *  src, int  in_linesize  )

static

Definition at line 336 of file mv30.c.

Referenced by decode_inter().

decode_coeffs()

static int decode_coeffs ( GetBitContext *  gb, int16_t *  coeffs, int  nb_codes  )

static

Definition at line 377 of file mv30.c.

Referenced by decode_inter(), and decode_intra().

decode_intra()

static int decode_intra ( AVCodecContext *  avctx, GetBitContext *  gb, AVFrame *  frame  )

static

Definition at line 403 of file mv30.c.

Referenced by decode_frame().

decode_inter()

static int decode_inter ( AVCodecContext *  avctx, GetBitContext *  gb, AVFrame *  frame, AVFrame *  prev  )

static

Definition at line 462 of file mv30.c.

Referenced by decode_frame().

decode_frame()

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

static

Definition at line 603 of file mv30.c.

init_static_data()

static av_cold void init_static_data ( void  )

static

Definition at line 660 of file mv30.c.

Referenced by av_codec_init_static(), and decode_init().

decode_init()

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 666 of file mv30.c.

decode_flush()

static void decode_flush ( AVCodecContext *  avctx )

static

Definition at line 685 of file mv30.c.

decode_close()

static av_cold int decode_close ( AVCodecContext *  avctx )

static

Definition at line 692 of file mv30.c.

Variable Documentation

cbp_tab

VLC cbp_tab

static

Definition at line 62 of file mv30.c.

Referenced by decode_coeffs(), and init_static_data().

luma_tab

const uint8_t luma_tab[]

static

Initial value:

= {
    12, 12, 15, 19, 25, 34, 40, 48,
    12, 12, 18, 22, 27, 44, 47, 46,
    17, 18, 21, 26, 35, 46, 52, 47,
    18, 20, 24, 28, 40, 61, 59, 51,
    20, 24, 32, 43, 50, 72, 72, 63,
    25, 31, 42, 48, 58, 72, 81, 75,
    38, 46, 54, 61, 71, 84, 88, 85,
    50, 61, 65, 68, 79, 78, 86, 91,
}

Definition at line 64 of file mv30.c.

Referenced by decode_frame().

chroma_tab

const uint8_t chroma_tab[]

static

Initial value:

= {
    12, 16, 24, 47, 99, 99, 99, 99,
    16, 21, 26, 66, 99, 99, 99, 99,
    24, 26, 56, 99, 99, 99, 99, 99,
    47, 66, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99,
    99, 99, 99, 99, 99, 99, 99, 99,
}

Definition at line 75 of file mv30.c.

Referenced by decode_frame().

zigzag

const uint8_t zigzag[]

static

Initial value:

= {
     0,  1,  8,  9, 16,  2,  3, 10,
    17, 24, 32, 25, 18, 11,  4,  5,
    12, 19, 26, 33, 40, 48, 41, 34,
    27, 20, 13,  6,  7, 14, 21, 28,
    35, 42, 49, 56, 57, 50, 43, 36,
    29, 22, 15, 23, 30, 37, 44, 51,
    58, 59, 52, 45, 38, 31, 39, 46,
    53, 60, 61, 54, 47, 55, 62, 63,
}

Definition at line 86 of file mv30.c.

Referenced by decode_inter_block(), and decode_intra_block().

cbp_bits

const uint8_t cbp_bits[]

static

Initial value:

= {
    2, 2, 3, 3, 3, 4, 5, 6, 7, 8, 9, 9,
}

Definition at line 656 of file mv30.c.

Referenced by init_static_data().

ff_mv30_decoder

AVCodec ff_mv30_decoder

Initial value:

= {
    .name             = "mv30",
    .long_name        = NULL_IF_CONFIG_SMALL("MidiVid 3.0"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_MV30,
    .priv_data_size   = sizeof(MV30Context),
    .init             = decode_init,
    .close            = decode_close,
    .decode           = decode_frame,
    .flush            = decode_flush,
    .capabilities     = AV_CODEC_CAP_DR1,
    .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE |
                        FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 705 of file mv30.c.