getvlc.h

video linux conference

/* macroblock modes */
#define MACROBLOCK_INTRA 1
#define MACROBLOCK_PATTERN 2
#define MACROBLOCK_MOTION_BACKWARD 4
#define MACROBLOCK_MOTION_FORWARD 8
#define MACROBLOCK_QUANT 16
#define DCT_TYPE_INTERLACED 32

/* motion_type */
#define MOTION_TYPE_MASK (3*64)
#define MOTION_TYPE_BASE 64
#define MC_FIELD (1*64)
#define MC_FRAME (2*64)
#define MC_16X8 (2*64)
#define MC_DMV (3*64)

/* picture structure */
#define TOP_FIELD 1
#define BOTTOM_FIELD 2
#define FRAME_PICTURE 3

/* take num bits from the high part of bit_buf and zero extend them */
#define UBITS(bit_buf,num) (((uint32_t)(bs->i_bit_in_cache)) >> (32 - (num)))

/* take num bits from the high part of bit_buf and sign extend them */
#define SBITS(bit_buf,num) (((int32_t)(bs->i_bit_in_cache)) >> (32 - (num)))

typedef struct {
    uint8_t modes;
    uint8_t len;
} MBtab;

typedef struct {
    uint8_t delta;
    uint8_t len;
} MVtab;

typedef struct {
    int8_t dmv;
    uint8_t len;
} DMVtab;

typedef struct {
    uint8_t cbp;
    uint8_t len;
} CBPtab;

typedef struct {
    uint8_t size;
    uint8_t len;
} DCtab;

typedef struct {
    uint8_t run;
    uint8_t level;
    uint8_t len;
} DCTtab;

typedef struct {
    uint8_t mba;
    uint8_t len;
} MBAtab;


#define INTRA MACROBLOCK_INTRA
#define QUANT MACROBLOCK_QUANT

static const MBtab MB_I [] = {
    {INTRA|QUANT, 2}, {INTRA, 1}
};

#define MC MACROBLOCK_MOTION_FORWARD
#define CODED MACROBLOCK_PATTERN

static const MBtab MB_P [] = {
    {INTRA|QUANT, 6}, {CODED|QUANT, 5}, {MC|CODED|QUANT, 5}, {INTRA,    5},
    {MC,          3}, {MC,          3}, {MC,             3}, {MC,       3},
    {CODED,       2}, {CODED,       2}, {CODED,          2}, {CODED,    2},
    {CODED,       2}, {CODED,       2}, {CODED,          2}, {CODED,    2},
    {MC|CODED,    1}, {MC|CODED,    1}, {MC|CODED,       1}, {MC|CODED, 1},
    {MC|CODED,    1}, {MC|CODED,    1}, {MC|CODED,       1}, {MC|CODED, 1},
    {MC|CODED,    1}, {MC|CODED,    1}, {MC|CODED,       1}, {MC|CODED, 1},
    {MC|CODED,    1}, {MC|CODED,    1}, {MC|CODED,       1}, {MC|CODED, 1}
};

#define FWD MACROBLOCK_MOTION_FORWARD
#define BWD MACROBLOCK_MOTION_BACKWARD
#define INTER MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD

static const MBtab MB_B [] = {
    {0,                 0}, {INTRA|QUANT,       6},
    {BWD|CODED|QUANT,   6}, {FWD|CODED|QUANT,   6},
    {INTER|CODED|QUANT, 5}, {INTER|CODED|QUANT, 5},
                                        {INTRA,       5}, {INTRA,       5},
    {FWD,         4}, {FWD,         4}, {FWD,         4}, {FWD,         4},
    {FWD|CODED,   4}, {FWD|CODED,   4}, {FWD|CODED,   4}, {FWD|CODED,   4},
    {BWD,         3}, {BWD,         3}, {BWD,         3}, {BWD,         3},
    {BWD,         3}, {BWD,         3}, {BWD,         3}, {BWD,         3},
    {BWD|CODED,   3}, {BWD|CODED,   3}, {BWD|CODED,   3}, {BWD|CODED,   3},
    {BWD|CODED,   3}, {BWD|CODED,   3}, {BWD|CODED,   3}, {BWD|CODED,   3},
    {INTER,       2}, {INTER,       2}, {INTER,       2}, {INTER,       2},
    {INTER,       2}, {INTER,       2}, {INTER,       2}, {INTER,       2},
    {INTER,       2}, {INTER,       2}, {INTER,       2}, {INTER,       2},
    {INTER,       2}, {INTER,       2}, {INTER,       2}, {INTER,       2},
    {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
    {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
    {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
    {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}
};

#undef INTRA
#undef QUANT
#undef MC
#undef CODED
#undef FWD
#undef BWD
#undef INTER


static const MVtab MV_4 [] = {
    { 3, 6}, { 2, 4}, { 1, 3}, { 1, 3}, { 0, 2}, { 0, 2}, { 0, 2}, { 0, 2}
};

static const MVtab MV_10 [] = {
    { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10},
    { 0,10}, { 0,10}, { 0,10}, { 0,10}, {15,10}, {14,10}, {13,10}, {12,10},
    {11,10}, {10,10}, { 9, 9}, { 9, 9}, { 8, 9}, { 8, 9}, { 7, 9}, { 7, 9},
    { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7},
    { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7},
    { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}
};


static const DMVtab DMV_2 [] = {
    { 0, 1}, { 0, 1}, { 1, 2}, {-1, 2}
};


static const CBPtab CBP_7 [] = {
    {0x22, 7}, {0x12, 7}, {0x0a, 7}, {0x06, 7},
    {0x21, 7}, {0x11, 7}, {0x09, 7}, {0x05, 7},
    {0x3f, 6}, {0x3f, 6}, {0x03, 6}, {0x03, 6},
    {0x24, 6}, {0x24, 6}, {0x18, 6}, {0x18, 6},
    {0x3e, 5}, {0x3e, 5}, {0x3e, 5}, {0x3e, 5},
    {0x02, 5}, {0x02, 5}, {0x02, 5}, {0x02, 5},
    {0x3d, 5}, {0x3d, 5}, {0x3d, 5}, {0x3d, 5},
    {0x01, 5}, {0x01, 5}, {0x01, 5}, {0x01, 5},
    {0x38, 5}, {0x38, 5}, {0x38, 5}, {0x38, 5},
    {0x34, 5}, {0x34, 5}, {0x34, 5}, {0x34, 5},
    {0x2c, 5}, {0x2c, 5}, {0x2c, 5}, {0x2c, 5},
    {0x1c, 5}, {0x1c, 5}, {0x1c, 5}, {0x1c, 5},
    {0x28, 5}, {0x28, 5}, {0x28, 5}, {0x28, 5},
    {0x14, 5}, {0x14, 5}, {0x14, 5}, {0x14, 5},
    {0x30, 5}, {0x30, 5}, {0x30, 5}, {0x30, 5},
    {0x0c, 5}, {0x0c, 5}, {0x0c, 5}, {0x0c, 5},
    {0x20, 4}, {0x20, 4}, {0x20, 4}, {0x20, 4},
    {0x20, 4}, {0x20, 4}, {0x20, 4}, {0x20, 4},
    {0x10, 4}, {0x10, 4}, {0x10, 4}, {0x10, 4},
    {0x10, 4}, {0x10, 4}, {0x10, 4}, {0x10, 4},
    {0x08, 4}, {0x08, 4}, {0x08, 4}, {0x08, 4},
    {0x08, 4}, {0x08, 4}, {0x08, 4}, {0x08, 4},
    {0x04, 4}, {0x04, 4}, {0x04, 4}, {0x04, 4},
    {0x04, 4}, {0x04, 4}, {0x04, 4}, {0x04, 4},
    {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
    {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
    {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
    {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3}
};

static const CBPtab CBP_9 [] = {
    {0,    0}, {0x00, 9}, {0x27, 9}, {0x1b, 9},
    {0x3b, 9}, {0x37, 9}, {0x2f, 9}, {0x1f, 9},
    {0x3a, 8}, {0x3a, 8}, {0x36, 8}, {0x36, 8},
    {0x2e, 8}, {0x2e, 8}, {0x1e, 8}, {0x1e, 8},
    {0x39, 8}, {0x39, 8}, {0x35, 8}, {0x35, 8},
    {0x2d, 8}, {0x2d, 8}, {0x1d, 8}, {0x1d, 8},
    {0x26, 8}, {0x26, 8}, {0x1a, 8}, {0x1a, 8},
    {0x25, 8}, {0x25, 8}, {0x19, 8}, {0x19, 8},
    {0x2b, 8}, {0x2b, 8}, {0x17, 8}, {0x17, 8},
    {0x33, 8}, {0x33, 8}, {0x0f, 8}, {0x0f, 8},
    {0x2a, 8}, {0x2a, 8}, {0x16, 8}, {0x16, 8},
    {0x32, 8}, {0x32, 8}, {0x0e, 8}, {0x0e, 8},
    {0x29, 8}, {0x29, 8}, {0x15, 8}, {0x15, 8},
    {0x31, 8}, {0x31, 8}, {0x0d, 8}, {0x0d, 8},
    {0x23, 8}, {0x23, 8}, {0x13, 8}, {0x13, 8},
    {0x0b, 8}, {0x0b, 8}, {0x07, 8}, {0x07, 8}
};


static const DCtab DC_lum_5 [] = {
    {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
    {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
    {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
    {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}
};

static const DCtab DC_chrom_5 [] = {
    {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
    {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},