imm4.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/mem_internal.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bswapdsp.h"
#include "copy_block.h"
#include "get_bits.h"
#include "idctdsp.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	IMM4Context

Macros
#define	CBPLO_VLC_BITS   6
#define	CBPHI_VLC_BITS   6
#define	BLKTYPE_VLC_BITS   9
#define	BLOCK_VLC_BITS   12

Functions
static int	get_cbphi (GetBitContext *gb, int x)
static int	decode_block (AVCodecContext *avctx, GetBitContext *gb, int block, int factor, int flag, int offset, int flag2)
static int	decode_blocks (AVCodecContext *avctx, GetBitContext *gb, unsigned cbp, int flag, int offset, unsigned flag2)
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	imm4_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 const uint8_t	intra_cb []
static const uint8_t	inter_cb []
static const uint8_t	cbplo [][2]
static const uint8_t	cbphi_bits []
static const uint8_t	cbphi_codes []
static const uint8_t	blktype [][2]
static const uint16_t	block_symbols []
static const uint8_t	block_bits []
static VLC	cbplo_tab
static VLC	cbphi_tab
static VLC	blktype_tab
static VLC	block_tab
const AVCodec	ff_imm4_decoder

Macro Definition Documentation

CBPLO_VLC_BITS

#define CBPLO_VLC_BITS   6

Definition at line 37 of file imm4.c.

CBPHI_VLC_BITS

#define CBPHI_VLC_BITS   6

Definition at line 38 of file imm4.c.

BLKTYPE_VLC_BITS

#define BLKTYPE_VLC_BITS   9

Definition at line 39 of file imm4.c.

BLOCK_VLC_BITS

#define BLOCK_VLC_BITS   12

Definition at line 40 of file imm4.c.

Function Documentation

get_cbphi()

static int get_cbphi ( GetBitContext *  gb, int  x  )

static

Definition at line 117 of file imm4.c.

Referenced by decode_inter(), and decode_intra().

decode_block()

static int decode_block ( AVCodecContext *  avctx, GetBitContext *  gb, int  block, int  factor, int  flag, int  offset, int  flag2  )

static

Definition at line 128 of file imm4.c.

Referenced by decode_blocks().

decode_blocks()

static int decode_blocks ( AVCodecContext *  avctx, GetBitContext *  gb, unsigned  cbp, int  flag, int  offset, unsigned  flag2  )

static

Definition at line 171 of file imm4.c.

Referenced by decode_inter(), and decode_intra().

decode_intra()

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

static

Definition at line 201 of file imm4.c.

Referenced by decode_frame().

decode_inter()

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

static

Definition at line 252 of file imm4.c.

Referenced by decode_frame().

decode_frame()

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

static

Definition at line 355 of file imm4.c.

imm4_init_static_data()

static av_cold void imm4_init_static_data ( void  )

static

Definition at line 477 of file imm4.c.

Referenced by decode_init().

decode_init()

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 495 of file imm4.c.

decode_flush()

static void decode_flush ( AVCodecContext *  avctx )

static

Definition at line 517 of file imm4.c.

decode_close()

static av_cold int decode_close ( AVCodecContext *  avctx )

static

Definition at line 524 of file imm4.c.

Variable Documentation

intra_cb

const uint8_t intra_cb[]

static

Initial value:

= {
    24, 18, 12
}

Definition at line 59 of file imm4.c.

Referenced by decode_intra().

inter_cb

const uint8_t inter_cb[]

static

Initial value:

= {
    30, 20, 15
}

Definition at line 63 of file imm4.c.

Referenced by decode_inter().

cbplo

const uint8_t cbplo[][2]

static

Initial value:

= {
    {    0,-6 }, { 0x01, 6 }, { 0x02, 6 }, { 0x03, 6 }, { 0x00, 4 },
    { 0x01, 3 }, { 0x02, 3 }, { 0x03, 3 }, { 0x00, 1 },
}

Definition at line 67 of file imm4.c.

Referenced by decode_inter(), decode_intra(), and imm4_init_static_data().

cbphi_bits

const uint8_t cbphi_bits[]

static

Initial value:

= {
    4, 5, 5, 4, 5, 4, 6, 4, 5, 6, 4, 4, 4, 4, 4, 2
}

Definition at line 72 of file imm4.c.

Referenced by imm4_init_static_data().

cbphi_codes

const uint8_t cbphi_codes[]

static

Initial value:

= {
    3, 5, 4, 9, 3, 7, 2, 11, 2, 3, 5, 10, 4, 8, 6, 3
}

Definition at line 76 of file imm4.c.

Referenced by imm4_init_static_data().

blktype

const uint8_t blktype[][2]

static

Initial value:

= {
    {    0,-8 }, { 0x34, 9 }, {    0,-9 }, { 0x14, 9 }, {    0,-9 },
    { 0x23, 8 }, { 0x13, 8 }, { 0x32, 8 }, { 0x33, 7 }, { 0x22, 7 },
    { 0x12, 7 }, { 0x21, 7 }, { 0x11, 7 }, { 0x04, 6 }, { 0x30, 6 },
    { 0x03, 5 }, { 0x20, 4 }, { 0x10, 4 }, { 0x02, 3 }, { 0x01, 3 },
    { 0x00, 1 },
}

Definition at line 80 of file imm4.c.

Referenced by imm4_init_static_data().

block_symbols

const uint16_t block_symbols[]

static

Initial value:

= {
         0, 0x4082, 0x4003, 0x000B, 0x000A, 0x4E01, 0x4D81, 0x4D01, 0x4C81,
    0x0482, 0x0402, 0x0382, 0x0302, 0x0282, 0x0183, 0x0103, 0x0084, 0x000C,
    0x0085, 0x0B81, 0x0C01, 0x4E81, 0x4F01, 0x4F81, 0x5001, 0x0086, 0x0104,
    0x0203, 0x0283, 0x0303, 0x0502, 0x0C81, 0x0D01, 0x5081, 0x5101, 0x5181,
    0x5201, 0x5281, 0x5301, 0x5381, 0x5401, 0x0000, 0x0009, 0x0008, 0x4C01,
    0x4B81, 0x4B01, 0x4A81, 0x4A01, 0x4981, 0x4901, 0x4881, 0x4002, 0x0B01,
    0x0A81, 0x0A01, 0x0981, 0x0901, 0x0881, 0x0801, 0x0781, 0x0202, 0x0182,
    0x0007, 0x0006, 0x4801, 0x4781, 0x4701, 0x4681, 0x4601, 0x4581, 0x4501,
    0x4481, 0x0701, 0x0681, 0x0102, 0x0083, 0x0005, 0x4401, 0x4381, 0x4301,
    0x4281, 0x0601, 0x0581, 0x0501, 0x0004, 0x4201, 0x4181, 0x4101, 0x4081,
    0x0481, 0x0401, 0x0381, 0x0301, 0x0082, 0x0003, 0x0281, 0x0201, 0x0181,
    0x4001, 0x0001, 0x0081, 0x0101, 0x0002,
}

Definition at line 88 of file imm4.c.

Referenced by imm4_init_static_data().

block_bits

const uint8_t block_bits[]

static

Initial value:

= {
    -9, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11,
    11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    12, 12, 12,  7, 10, 10,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
     9,  9,  9,  9,  9,  9,  9,  9,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,
     8,  8,  7,  7,  7,  7,  7,  7,  7,  7,  6,  6,  6,  6,  6,  6,  6,  6,  6,
     6,  5,  5,  5,  4,  2,  3,  4,  4,
}

Definition at line 103 of file imm4.c.

Referenced by decode_entropy_image(), imm4_init_static_data(), parse_transform_color(), and parse_transform_predictor().

cbplo_tab

VLC cbplo_tab

static

Definition at line 112 of file imm4.c.

Referenced by decode_intra(), and imm4_init_static_data().

cbphi_tab

VLC cbphi_tab

static

Definition at line 113 of file imm4.c.

Referenced by get_cbphi(), and imm4_init_static_data().

blktype_tab

VLC blktype_tab

static

Definition at line 114 of file imm4.c.

Referenced by decode_inter(), and imm4_init_static_data().

block_tab

VLC block_tab

static

Definition at line 115 of file imm4.c.

Referenced by decode_block(), and imm4_init_static_data().

ff_imm4_decoder

const AVCodec ff_imm4_decoder

Initial value:

= {
    .name             = "imm4",
    .long_name        = NULL_IF_CONFIG_SMALL("Infinity IMM4"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_IMM4,
    .priv_data_size   = sizeof(IMM4Context),
    .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 535 of file imm4.c.