[libav.git] / libavcodec / simple_idct_template.c

/*
 * Simple IDCT
 *
 * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of Libav.
 *
 * Libav is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * Libav is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * simpleidct in C.
 */

/*
  based upon some outcommented c code from mpeg2dec (idct_mmx.c
  written by Aaron Holtzman <aholtzma@ess.engr.uvic.ca>)
 */

#include "bit_depth_template.c"

#undef W1
#undef W2
#undef W3
#undef W4
#undef W5
#undef W6
#undef W7
#undef ROW_SHIFT
#undef COL_SHIFT
#undef DC_SHIFT
#undef MUL
#undef MAC

#if BIT_DEPTH == 8

#define W1  22725  //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W2  21407  //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W3  19266  //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W4  16383  //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W5  12873  //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W6  8867   //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W7  4520   //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5

#define ROW_SHIFT 11
#define COL_SHIFT 20
#define DC_SHIFT 3

#define MUL(a, b)    MUL16(a, b)
#define MAC(a, b, c) MAC16(a, b, c)

#elif BIT_DEPTH == 10

#define W1 90901
#define W2 85627
#define W3 77062
#define W4 65535
#define W5 51491
#define W6 35468
#define W7 18081

#define ROW_SHIFT 15
#define COL_SHIFT 20
#define DC_SHIFT 1

#define MUL(a, b)    ((a) * (b))
#define MAC(a, b, c) ((a) += (b) * (c))

#else

#error "Unsupported bitdepth"

#endif

static inline void FUNC(idctRowCondDC)(DCTELEM *row, int extra_shift)
{
    int a0, a1, a2, a3, b0, b1, b2, b3;

#if HAVE_FAST_64BIT
#define ROW0_MASK (0xffffLL << 48 * HAVE_BIGENDIAN)
    if (((((uint64_t *)row)[0] & ~ROW0_MASK) | ((uint64_t *)row)[1]) == 0) {
        uint64_t temp;
        if (DC_SHIFT - extra_shift > 0) {
            temp = (row[0] << (DC_SHIFT - extra_shift)) & 0xffff;
        } else {
            temp = (row[0] >> (extra_shift - DC_SHIFT)) & 0xffff;
        }
        temp += temp << 16;
        temp += temp << 32;
        ((uint64_t *)row)[0] = temp;
        ((uint64_t *)row)[1] = temp;
        return;
    }
#else
    if (!(((uint32_t*)row)[1] |
          ((uint32_t*)row)[2] |
          ((uint32_t*)row)[3] |
          row[1])) {
        uint32_t temp;
        if (DC_SHIFT - extra_shift > 0) {
            temp = (row[0] << (DC_SHIFT - extra_shift)) & 0xffff;
        } else {
            temp = (row[0] >> (extra_shift - DC_SHIFT)) & 0xffff;
        }
        temp += temp << 16;
        ((uint32_t*)row)[0]=((uint32_t*)row)[1] =
            ((uint32_t*)row)[2]=((uint32_t*)row)[3] = temp;
        return;
    }
#endif

    a0 = (W4 * row[0]) + (1 << (ROW_SHIFT - 1));
    a1 = a0;
    a2 = a0;
    a3 = a0;

    a0 += W2 * row[2];
    a1 += W6 * row[2];
    a2 -= W6 * row[2];
    a3 -= W2 * row[2];

    b0 = MUL(W1, row[1]);
    MAC(b0, W3, row[3]);
    b1 = MUL(W3, row[1]);
    MAC(b1, -W7, row[3]);
    b2 = MUL(W5, row[1]);
    MAC(b2, -W1, row[3]);
    b3 = MUL(W7, row[1]);
    MAC(b3, -W5, row[3]);

    if (AV_RN64A(row + 4)) {
        a0 +=   W4*row[4] + W6*row[6];
        a1 += - W4*row[4] - W2*row[6];
        a2 += - W4*row[4] + W2*row[6];
        a3 +=   W4*row[4] - W6*row[6];

        MAC(b0,  W5, row[5]);
        MAC(b0,  W7, row[7]);

        MAC(b1, -W1, row[5]);
        MAC(b1, -W5, row[7]);

        MAC(b2,  W7, row[5]);
        MAC(b2,  W3, row[7]);

        MAC(b3,  W3, row[5]);
        MAC(b3, -W1, row[7]);
    }

    row[0] = (a0 + b0) >> (ROW_SHIFT + extra_shift);
    row[7] = (a0 - b0) >> (ROW_SHIFT + extra_shift);
    row[1] = (a1 + b1) >> (ROW_SHIFT + extra_shift);
    row[6] = (a1 - b1) >> (ROW_SHIFT + extra_shift);
    row[2] = (a2 + b2) >> (ROW_SHIFT + extra_shift);
    row[5] = (a2 - b2) >> (ROW_SHIFT + extra_shift);
    row[3] = (a3 + b3) >> (ROW_SHIFT + extra_shift);
    row[4] = (a3 - b3) >> (ROW_SHIFT + extra_shift);
}

#define IDCT_COLS do {                                  \
        a0 = W4 * (col[8*0] + ((1<<(COL_SHIFT-1))/W4)); \
        a1 = a0;                                        \
        a2 = a0;                                        \
        a3 = a0;                                        \
                                                        \
        a0 +=  W2*col[8*2];                             \
        a1 +=  W6*col[8*2];                             \
        a2 += -W6*col[8*2];                             \
        a3 += -W2*col[8*2];                             \
                                                        \
        b0 = MUL(W1, col[8*1]);                         \
        b1 = MUL(W3, col[8*1]);                         \
        b2 = MUL(W5, col[8*1]);                         \
        b3 = MUL(W7, col[8*1]);                         \
                                                        \
        MAC(b0,  W3, col[8*3]);                         \
        MAC(b1, -W7, col[8*3]);                         \
        MAC(b2, -W1, col[8*3]);                         \
        MAC(b3, -W5, col[8*3]);                         \
                                                        \
        if (col[8*4]) {                                 \
            a0 +=  W4*col[8*4];                         \
            a1 += -W4*col[8*4];                         \
            a2 += -W4*col[8*4];                         \
            a3 +=  W4*col[8*4];                         \
        }                                               \
                                                        \
        if (col[8*5]) {                                 \
            MAC(b0,  W5, col[8*5]);                     \
            MAC(b1, -W1, col[8*5]);                     \
            MAC(b2,  W7, col[8*5]);                     \
            MAC(b3,  W3, col[8*5]);                     \
        }                                               \
                                                        \
        if (col[8*6]) {                                 \
            a0 +=  W6*col[8*6];                         \
            a1 += -W2*col[8*6];                         \
            a2 +=  W2*col[8*6];                         \
            a3 += -W6*col[8*6];                         \
        }                                               \
                                                        \
        if (col[8*7]) {                                 \
            MAC(b0,  W7, col[8*7]);                     \
            MAC(b1, -W5, col[8*7]);                     \
            MAC(b2,  W3, col[8*7]);                     \
            MAC(b3, -W1, col[8*7]);                     \
        }                                               \
    } while (0)

static inline void FUNC(idctSparseColPut)(pixel *dest, int line_size,
                                          DCTELEM *col)
{
    int a0, a1, a2, a3, b0, b1, b2, b3;
    INIT_CLIP;

    IDCT_COLS;

    dest[0] = CLIP((a0 + b0) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a1 + b1) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a2 + b2) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a3 + b3) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a3 - b3) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a2 - b2) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a1 - b1) >> COL_SHIFT);
    dest += line_size;
    dest[0] = CLIP((a0 - b0) >> COL_SHIFT);
}

static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
                                          DCTELEM *col)
{
    int a0, a1, a2, a3, b0, b1, b2, b3;
    INIT_CLIP;

    IDCT_COLS;

    dest[0] = CLIP(dest[0] + ((a0 + b0) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a1 + b1) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a2 + b2) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a3 + b3) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a3 - b3) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a2 - b2) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a1 - b1) >> COL_SHIFT));
    dest += line_size;
    dest[0] = CLIP(dest[0] + ((a0 - b0) >> COL_SHIFT));
}

static inline void FUNC(idctSparseCol)(DCTELEM *col)
{
    int a0, a1, a2, a3, b0, b1, b2, b3;

    IDCT_COLS;

    col[0 ] = ((a0 + b0) >> COL_SHIFT);
    col[8 ] = ((a1 + b1) >> COL_SHIFT);
    col[16] = ((a2 + b2) >> COL_SHIFT);
    col[24] = ((a3 + b3) >> COL_SHIFT);
    col[32] = ((a3 - b3) >> COL_SHIFT);
    col[40] = ((a2 - b2) >> COL_SHIFT);
    col[48] = ((a1 - b1) >> COL_SHIFT);
    col[56] = ((a0 - b0) >> COL_SHIFT);
}

void FUNC(ff_simple_idct_put)(uint8_t *dest_, int line_size, DCTELEM *block)
{
    pixel *dest = (pixel *)dest_;
    int i;

    line_size /= sizeof(pixel);

    for (i = 0; i < 8; i++)
        FUNC(idctRowCondDC)(block + i*8, 0);

    for (i = 0; i < 8; i++)
        FUNC(idctSparseColPut)(dest + i, line_size, block + i);
}

void FUNC(ff_simple_idct_add)(uint8_t *dest_, int line_size, DCTELEM *block)
{
    pixel *dest = (pixel *)dest_;
    int i;

    line_size /= sizeof(pixel);

    for (i = 0; i < 8; i++)
        FUNC(idctRowCondDC)(block + i*8, 0);

    for (i = 0; i < 8; i++)
        FUNC(idctSparseColAdd)(dest + i, line_size, block + i);
}

void FUNC(ff_simple_idct)(DCTELEM *block)
{
    int i;

    for (i = 0; i < 8; i++)
        FUNC(idctRowCondDC)(block + i*8, 0);

    for (i = 0; i < 8; i++)
        FUNC(idctSparseCol)(block + i);
}
Commit	Line	Data
e7a972e1 MR	1	/*
	2	* Simple IDCT
	3	*
	4	* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
	5	*
	6	* This file is part of Libav.
	7	*
	8	* Libav is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU Lesser General Public
	10	* License as published by the Free Software Foundation; either
	11	* version 2.1 of the License, or (at your option) any later version.
	12	*
	13	* Libav is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* Lesser General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public
	19	* License along with Libav; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	21	*/
	22
	23	/**
	24	* @file
	25	* simpleidct in C.
	26	*/
	27
	28	/*
	29	based upon some outcommented c code from mpeg2dec (idct_mmx.c
	30	written by Aaron Holtzman <aholtzma@ess.engr.uvic.ca>)
	31	*/
	32
	33	#include "bit_depth_template.c"
	34
	35	#undef W1
	36	#undef W2
	37	#undef W3
	38	#undef W4
	39	#undef W5
	40	#undef W6
	41	#undef W7
	42	#undef ROW_SHIFT
	43	#undef COL_SHIFT
	44	#undef DC_SHIFT
	45	#undef MUL
	46	#undef MAC
	47
	48	#if BIT_DEPTH == 8
	49
	50	#define W1 22725 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	51	#define W2 21407 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	52	#define W3 19266 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	53	#define W4 16383 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	54	#define W5 12873 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	55	#define W6 8867 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	56	#define W7 4520 //cos(iM_PI/16)sqrt(2)*(1<<14) + 0.5
	57
	58	#define ROW_SHIFT 11
	59	#define COL_SHIFT 20
	60	#define DC_SHIFT 3
	61
	62	#define MUL(a, b) MUL16(a, b)
	63	#define MAC(a, b, c) MAC16(a, b, c)
	64
65	#elif BIT_DEPTH == 10
66
67	#define W1 90901
68	#define W2 85627
69	#define W3 77062
70	#define W4 65535
71	#define W5 51491
72	#define W6 35468
73	#define W7 18081
74
75	#define ROW_SHIFT 15
76	#define COL_SHIFT 20
77	#define DC_SHIFT 1
78
79	#define MUL(a, b) ((a) * (b))
80	#define MAC(a, b, c) ((a) += (b) * (c))
81
82	#else
83
84	#error "Unsupported bitdepth"
85
86	#endif
87
f78cd0c2	88	static inline void FUNC(idctRowCondDC)(DCTELEM *row, int extra_shift)
e7a972e1	89	{
2cc4f3b2	90	int a0, a1, a2, a3, b0, b1, b2, b3;
e7a972e1 MR	91
	92	#if HAVE_FAST_64BIT
	93	#define ROW0_MASK (0xffffLL << 48 * HAVE_BIGENDIAN)
2cc4f3b2	94	if (((((uint64_t )row)[0] & ~ROW0_MASK) \| ((uint64_t )row)[1]) == 0) {
f78cd0c2 RB	95	uint64_t temp;
	96	if (DC_SHIFT - extra_shift > 0) {
	97	temp = (row[0] << (DC_SHIFT - extra_shift)) & 0xffff;
	98	} else {
	99	temp = (row[0] >> (extra_shift - DC_SHIFT)) & 0xffff;
	100	}
2cc4f3b2 MR	101	temp += temp << 16;
	102	temp += temp << 32;
	103	((uint64_t *)row)[0] = temp;
	104	((uint64_t *)row)[1] = temp;
	105	return;
	106	}
e7a972e1	107	#else
2cc4f3b2 MR	108	if (!(((uint32_t*)row)[1] \|
	109	((uint32_t*)row)[2] \|
	110	((uint32_t*)row)[3] \|
	111	row[1])) {
f78cd0c2 RB	112	uint32_t temp;
	113	if (DC_SHIFT - extra_shift > 0) {
	114	temp = (row[0] << (DC_SHIFT - extra_shift)) & 0xffff;
	115	} else {
	116	temp = (row[0] >> (extra_shift - DC_SHIFT)) & 0xffff;
	117	}
2cc4f3b2 MR	118	temp += temp << 16;
	119	((uint32_t)row)[0]=((uint32_t)row)[1] =
	120	((uint32_t)row)[2]=((uint32_t)row)[3] = temp;
	121	return;
	122	}
e7a972e1 MR	123	#endif
e7a972e1 MR	124
2cc4f3b2 MR	125	a0 = (W4 * row[0]) + (1 << (ROW_SHIFT - 1));
	126	a1 = a0;
	127	a2 = a0;
	128	a3 = a0;
	129
	130	a0 += W2 * row[2];
	131	a1 += W6 * row[2];
	132	a2 -= W6 * row[2];
	133	a3 -= W2 * row[2];
	134
	135	b0 = MUL(W1, row[1]);
	136	MAC(b0, W3, row[3]);
	137	b1 = MUL(W3, row[1]);
	138	MAC(b1, -W7, row[3]);
	139	b2 = MUL(W5, row[1]);
	140	MAC(b2, -W1, row[3]);
	141	b3 = MUL(W7, row[1]);
	142	MAC(b3, -W5, row[3]);
	143
	144	if (AV_RN64A(row + 4)) {
	145	a0 += W4row[4] + W6row[6];
	146	a1 += - W4row[4] - W2row[6];
	147	a2 += - W4row[4] + W2row[6];
	148	a3 += W4row[4] - W6row[6];
	149
	150	MAC(b0, W5, row[5]);
	151	MAC(b0, W7, row[7]);
	152
	153	MAC(b1, -W1, row[5]);
	154	MAC(b1, -W5, row[7]);
	155
	156	MAC(b2, W7, row[5]);
	157	MAC(b2, W3, row[7]);
	158
	159	MAC(b3, W3, row[5]);
	160	MAC(b3, -W1, row[7]);
	161	}
	162
f78cd0c2 RB	163	row[0] = (a0 + b0) >> (ROW_SHIFT + extra_shift);
	164	row[7] = (a0 - b0) >> (ROW_SHIFT + extra_shift);
	165	row[1] = (a1 + b1) >> (ROW_SHIFT + extra_shift);
	166	row[6] = (a1 - b1) >> (ROW_SHIFT + extra_shift);
	167	row[2] = (a2 + b2) >> (ROW_SHIFT + extra_shift);
	168	row[5] = (a2 - b2) >> (ROW_SHIFT + extra_shift);
	169	row[3] = (a3 + b3) >> (ROW_SHIFT + extra_shift);
	170	row[4] = (a3 - b3) >> (ROW_SHIFT + extra_shift);
e7a972e1 MR	171	}
e7a972e1 MR	172
a402f109 MR	173	#define IDCT_COLS do { \
	174	a0 = W4 * (col[8*0] + ((1<<(COL_SHIFT-1))/W4)); \
	175	a1 = a0; \
	176	a2 = a0; \
	177	a3 = a0; \
	178	\
	179	a0 += W2col[82]; \
	180	a1 += W6col[82]; \
	181	a2 += -W6col[82]; \
	182	a3 += -W2col[82]; \
	183	\
	184	b0 = MUL(W1, col[8*1]); \
	185	b1 = MUL(W3, col[8*1]); \
	186	b2 = MUL(W5, col[8*1]); \
	187	b3 = MUL(W7, col[8*1]); \
	188	\
	189	MAC(b0, W3, col[8*3]); \
	190	MAC(b1, -W7, col[8*3]); \
	191	MAC(b2, -W1, col[8*3]); \
	192	MAC(b3, -W5, col[8*3]); \
	193	\
	194	if (col[8*4]) { \
	195	a0 += W4col[84]; \
	196	a1 += -W4col[84]; \
	197	a2 += -W4col[84]; \
	198	a3 += W4col[84]; \
	199	} \
	200	\
	201	if (col[8*5]) { \
	202	MAC(b0, W5, col[8*5]); \
	203	MAC(b1, -W1, col[8*5]); \
	204	MAC(b2, W7, col[8*5]); \
	205	MAC(b3, W3, col[8*5]); \
	206	} \
	207	\
	208	if (col[8*6]) { \
	209	a0 += W6col[86]; \
	210	a1 += -W2col[86]; \
	211	a2 += W2col[86]; \
	212	a3 += -W6col[86]; \
	213	} \
	214	\
	215	if (col[8*7]) { \
	216	MAC(b0, W7, col[8*7]); \
	217	MAC(b1, -W5, col[8*7]); \
	218	MAC(b2, W3, col[8*7]); \
	219	MAC(b3, -W1, col[8*7]); \
	220	} \
	221	} while (0)
	222
e7a972e1 MR	223	static inline void FUNC(idctSparseColPut)(pixel *dest, int line_size,
	224	DCTELEM *col)
	225	{
2cc4f3b2 MR	226	int a0, a1, a2, a3, b0, b1, b2, b3;
	227	INIT_CLIP;
	228
	229	IDCT_COLS;
	230
	231	dest[0] = CLIP((a0 + b0) >> COL_SHIFT);
	232	dest += line_size;
	233	dest[0] = CLIP((a1 + b1) >> COL_SHIFT);
	234	dest += line_size;
	235	dest[0] = CLIP((a2 + b2) >> COL_SHIFT);
	236	dest += line_size;
	237	dest[0] = CLIP((a3 + b3) >> COL_SHIFT);
	238	dest += line_size;
	239	dest[0] = CLIP((a3 - b3) >> COL_SHIFT);
	240	dest += line_size;
	241	dest[0] = CLIP((a2 - b2) >> COL_SHIFT);
	242	dest += line_size;
	243	dest[0] = CLIP((a1 - b1) >> COL_SHIFT);
	244	dest += line_size;
	245	dest[0] = CLIP((a0 - b0) >> COL_SHIFT);
e7a972e1 MR	246	}
	247
	248	static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
	249	DCTELEM *col)
	250	{
2cc4f3b2 MR	251	int a0, a1, a2, a3, b0, b1, b2, b3;
	252	INIT_CLIP;
	253
	254	IDCT_COLS;
	255
	256	dest[0] = CLIP(dest[0] + ((a0 + b0) >> COL_SHIFT));
	257	dest += line_size;
	258	dest[0] = CLIP(dest[0] + ((a1 + b1) >> COL_SHIFT));
	259	dest += line_size;
	260	dest[0] = CLIP(dest[0] + ((a2 + b2) >> COL_SHIFT));
	261	dest += line_size;
	262	dest[0] = CLIP(dest[0] + ((a3 + b3) >> COL_SHIFT));
	263	dest += line_size;
	264	dest[0] = CLIP(dest[0] + ((a3 - b3) >> COL_SHIFT));
	265	dest += line_size;
	266	dest[0] = CLIP(dest[0] + ((a2 - b2) >> COL_SHIFT));
	267	dest += line_size;
	268	dest[0] = CLIP(dest[0] + ((a1 - b1) >> COL_SHIFT));
	269	dest += line_size;
	270	dest[0] = CLIP(dest[0] + ((a0 - b0) >> COL_SHIFT));
e7a972e1 MR	271	}
	272
	273	static inline void FUNC(idctSparseCol)(DCTELEM *col)
	274	{
2cc4f3b2 MR	275	int a0, a1, a2, a3, b0, b1, b2, b3;
	276
	277	IDCT_COLS;
	278
	279	col[0 ] = ((a0 + b0) >> COL_SHIFT);
	280	col[8 ] = ((a1 + b1) >> COL_SHIFT);
	281	col[16] = ((a2 + b2) >> COL_SHIFT);
	282	col[24] = ((a3 + b3) >> COL_SHIFT);
	283	col[32] = ((a3 - b3) >> COL_SHIFT);
	284	col[40] = ((a2 - b2) >> COL_SHIFT);
	285	col[48] = ((a1 - b1) >> COL_SHIFT);
	286	col[56] = ((a0 - b0) >> COL_SHIFT);
e7a972e1 MR	287	}
	288
	289	void FUNC(ff_simple_idct_put)(uint8_t dest_, int line_size, DCTELEM block)
	290	{
	291	pixel dest = (pixel )dest_;
	292	int i;
e7bcc5ba MR	293
	294	line_size /= sizeof(pixel);
	295
2cc4f3b2	296	for (i = 0; i < 8; i++)
f78cd0c2	297	FUNC(idctRowCondDC)(block + i*8, 0);
e7a972e1	298
2cc4f3b2	299	for (i = 0; i < 8; i++)
e7a972e1 MR	300	FUNC(idctSparseColPut)(dest + i, line_size, block + i);
	301	}
	302
	303	void FUNC(ff_simple_idct_add)(uint8_t dest_, int line_size, DCTELEM block)
	304	{
	305	pixel dest = (pixel )dest_;
	306	int i;
e7bcc5ba MR	307
	308	line_size /= sizeof(pixel);
	309
2cc4f3b2	310	for (i = 0; i < 8; i++)
f78cd0c2	311	FUNC(idctRowCondDC)(block + i*8, 0);
e7a972e1	312
2cc4f3b2	313	for (i = 0; i < 8; i++)
e7a972e1 MR	314	FUNC(idctSparseColAdd)(dest + i, line_size, block + i);
	315	}
	316
	317	void FUNC(ff_simple_idct)(DCTELEM *block)
	318	{
	319	int i;
2cc4f3b2 MR	320
2cc4f3b2 MR	321	for (i = 0; i < 8; i++)
f78cd0c2	322	FUNC(idctRowCondDC)(block + i*8, 0);
e7a972e1	323
2cc4f3b2	324	for (i = 0; i < 8; i++)
e7a972e1 MR	325	FUNC(idctSparseCol)(block + i);
e7a972e1 MR	326	}