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porting the mmx&sse2 (sse2 untested) vp3 idcts to the lavc idct API

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Originally committed as revision 4260 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-05-17 18:28:40 +00:00
parent 1482fee88d
commit 5773a74669
5 changed files with 48 additions and 266 deletions
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4
libavcodec/dsputil.c
View File

@ -3885,6 +3885,10 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
for(i=0; i<64; i++)
c->idct_permutation[i]= ((i&7)<<3) | (i>>3);
break;
case FF_PARTTRANS_IDCT_PERM:
for(i=0; i<64; i++)
c->idct_permutation[i]= (i&0x24) | ((i&3)<<3) | ((i>>3)&3);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Internal error, IDCT permutation not set\n");
}

1
libavcodec/dsputil.h
View File

@ -315,6 +315,7 @@ typedef struct DSPContext {
#define FF_LIBMPEG2_IDCT_PERM 2
#define FF_SIMPLE_IDCT_PERM 3
#define FF_TRANSPOSE_IDCT_PERM 4
#define FF_PARTTRANS_IDCT_PERM 5
int (*try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale);
void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);

46
libavcodec/i386/dsputil_mmx.c
View File

@ -3115,6 +3115,10 @@ static void add_8x8basis_mmx(int16_t rem[64], int16_t basis[64], int scale){
void ff_mmx_idct(DCTELEM *block);
void ff_mmxext_idct(DCTELEM *block);
void ff_vp3_idct_sse2(int16_t *input_data);
void ff_vp3_idct_mmx(int16_t *data);
void ff_vp3_dsp_init_mmx(void);
/* XXX: those functions should be suppressed ASAP when all IDCTs are
converted */
static void ff_libmpeg2mmx_idct_put(uint8_t *dest, int line_size, DCTELEM *block)
@ -3137,6 +3141,26 @@ static void ff_libmpeg2mmx2_idct_add(uint8_t *dest, int line_size, DCTELEM *bloc
ff_mmxext_idct (block);
add_pixels_clamped_mmx(block, dest, line_size);
}
static void ff_vp3_idct_put_sse2(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_sse2(block);
put_signed_pixels_clamped_mmx(block, dest, line_size);
}
static void ff_vp3_idct_add_sse2(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_sse2(block);
add_pixels_clamped_mmx(block, dest, line_size);
}
static void ff_vp3_idct_put_mmx(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_mmx(block);
put_signed_pixels_clamped_mmx(block, dest, line_size);
}
static void ff_vp3_idct_add_mmx(uint8_t *dest, int line_size, DCTELEM *block)
{
ff_vp3_idct_mmx(block);
add_pixels_clamped_mmx(block, dest, line_size);
}
void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
{
@ -3196,18 +3220,22 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
c->idct = ff_mmx_idct;
}
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}else if(idct_algo==FF_IDCT_VP3){
if(mm_flags & MM_SSE2){
c->idct_put= ff_vp3_idct_put_sse2;
c->idct_add= ff_vp3_idct_add_sse2;
c->idct = ff_vp3_idct_sse2;
c->idct_permutation_type= FF_TRANSPOSE_IDCT_PERM;
}else{
ff_vp3_dsp_init_mmx();
c->idct_put= ff_vp3_idct_put_mmx;
c->idct_add= ff_vp3_idct_add_mmx;
c->idct = ff_vp3_idct_mmx;
c->idct_permutation_type= FF_PARTTRANS_IDCT_PERM;
}
}
}
/* VP3 optimized DSP functions */
// if (mm_flags & MM_SSE2) {
// c->vp3_dsp_init = vp3_dsp_init_sse2;
// c->vp3_idct = vp3_idct_sse2;
// } else {
// c->vp3_dsp_init = vp3_dsp_init_mmx;
// c->vp3_idct = vp3_idct_mmx;
// }
#ifdef CONFIG_ENCODERS
c->get_pixels = get_pixels_mmx;
c->diff_pixels = diff_pixels_mmx;

247
libavcodec/i386/vp3dsp_mmx.c
View File

@ -257,18 +257,11 @@ static uint16_t idct_cosine_table[7] = {
movq_r2m(r2, *I(2)); \
}
void vp3_dsp_init_mmx(void)
void ff_vp3_dsp_init_mmx(void)
{
int j = 16;
uint16_t *p;
do {
idct_constants[--j] = 0;
} while (j);
idct_constants[0] = idct_constants[5] =
idct_constants[10] = idct_constants[15] = 65535;
j = 1;
do {
p = idct_constants + ((j + 3) << 2);
@ -279,8 +272,7 @@ void vp3_dsp_init_mmx(void)
idct_constants[46] = idct_constants[47] = IdctAdjustBeforeShift;
}
void vp3_idct_mmx(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, int16_t *output_data)
void ff_vp3_idct_mmx(int16_t *output_data)
{
/* eax = quantized input
* ebx = dequantizer matrix
@ -291,246 +283,11 @@ void vp3_idct_mmx(int16_t *input_data, int16_t *dequant_matrix,
* r0..r7 = mm0..mm7
*/
#define M(x) (idct_constants + x * 4)
#define C(x) (idct_constants + 16 + (x - 1) * 4)
#define Eight (idct_constants + 44)
unsigned char *input_bytes = (unsigned char *)input_data;
unsigned char *dequant_matrix_bytes = (unsigned char *)dequant_matrix;
unsigned char *output_data_bytes = (unsigned char *)output_data;
movq_m2r(*(input_bytes), r0);
pmullw_m2r(*(dequant_matrix_bytes), r0); /* r0 = 03 02 01 00 */
movq_m2r(*(input_bytes+16), r1);
pmullw_m2r(*(dequant_matrix_bytes+16), r1); /* r1 = 13 12 11 10 */
movq_m2r(*M(0), r2); /* r2 = __ __ __ FF */
movq_r2r(r0, r3); /* r3 = 03 02 01 00 */
movq_m2r(*(input_bytes+8), r4);
psrlq_i2r(16, r0); /* r0 = __ 03 02 01 */
pmullw_m2r(*(dequant_matrix_bytes+8), r4); /* r4 = 07 06 05 04 */
pand_r2r(r2, r3); /* r3 = __ __ __ 00 */
movq_r2r(r0, r5); /* r5 = __ 03 02 01 */
movq_r2r(r1, r6); /* r6 = 13 12 11 10 */
pand_r2r(r2, r5); /* r5 = __ __ __ 01 */
psllq_i2r(32, r6); /* r6 = 11 10 __ __ */
movq_m2r(*M(3), r7); /* r7 = FF __ __ __ */
pxor_r2r(r5, r0); /* r0 = __ 03 02 __ */
pand_r2r(r6, r7); /* r7 = 11 __ __ __ */
por_r2r(r3, r0); /* r0 = __ 03 02 00 */
pxor_r2r(r7, r6); /* r6 = __ 10 __ __ */
por_r2r(r7, r0); /* r0 = 11 03 02 00 = R0 */
movq_m2r(*M(3), r7); /* r7 = FF __ __ __ */
movq_r2r(r4, r3); /* r3 = 07 06 05 04 */
movq_r2m(r0, *(output_data_bytes)); /* write R0 = r0 */
pand_r2r(r2, r3); /* r3 = __ __ __ 04 */
movq_m2r(*(input_bytes+32), r0);
psllq_i2r(16, r3); /* r3 = __ __ 04 __ */
pmullw_m2r(*(dequant_matrix_bytes+32), r0); /* r0 = 23 22 21 20 */
pand_r2r(r1, r7); /* r7 = 13 __ __ __ */
por_r2r(r3, r5); /* r5 = __ __ 04 01 */
por_r2r(r6, r7); /* r7 = 13 10 __ __ */
movq_m2r(*(input_bytes+24), r3);
por_r2r(r5, r7); /* r7 = 13 10 04 01 = R1 */
pmullw_m2r(*(dequant_matrix_bytes+24), r3); /* r3 = 17 16 15 14 */
psrlq_i2r(16, r4); /* r4 = __ 07 06 05 */
movq_r2m(r7, *(output_data_bytes+16)); /* write R1 = r7 */
movq_r2r(r4, r5); /* r5 = __ 07 06 05 */
movq_r2r(r0, r7); /* r7 = 23 22 21 20 */
psrlq_i2r(16, r4); /* r4 = __ __ 07 06 */
psrlq_i2r(48, r7); /* r7 = __ __ __ 23 */
movq_r2r(r2, r6); /* r6 = __ __ __ FF */
pand_r2r(r2, r5); /* r5 = __ __ __ 05 */
pand_r2r(r4, r6); /* r6 = __ __ __ 06 */
movq_r2m(r7, *(output_data_bytes+80)); /* partial R9 = __ __ __ 23 */
pxor_r2r(r6, r4); /* r4 = __ __ 07 __ */
psrlq_i2r(32, r1); /* r1 = __ __ 13 12 */
por_r2r(r5, r4); /* r4 = __ __ 07 05 */
movq_m2r(*M(3), r7); /* r7 = FF __ __ __ */
pand_r2r(r2, r1); /* r1 = __ __ __ 12 */
movq_m2r(*(input_bytes+48), r5);
psllq_i2r(16, r0); /* r0 = 22 21 20 __ */
pmullw_m2r(*(dequant_matrix_bytes+48), r5); /* r5 = 33 32 31 30 */
pand_r2r(r0, r7); /* r7 = 22 __ __ __ */
movq_r2m(r1, *(output_data_bytes+64)); /* partial R8 = __ __ __ 12 */
por_r2r(r4, r7); /* r7 = 22 __ 07 05 */
movq_r2r(r3, r4); /* r4 = 17 16 15 14 */
pand_r2r(r2, r3); /* r3 = __ __ __ 14 */
movq_m2r(*M(2), r1); /* r1 = __ FF __ __ */
psllq_i2r(32, r3); /* r3 = __ 14 __ __ */
por_r2r(r3, r7); /* r7 = 22 14 07 05 = R2 */
movq_r2r(r5, r3); /* r3 = 33 32 31 30 */
psllq_i2r(48, r3); /* r3 = 30 __ __ __ */
pand_r2r(r0, r1); /* r1 = __ 21 __ __ */
movq_r2m(r7, *(output_data_bytes+32)); /* write R2 = r7 */
por_r2r(r3, r6); /* r6 = 30 __ __ 06 */
movq_m2r(*M(1), r7); /* r7 = __ __ FF __ */
por_r2r(r1, r6); /* r6 = 30 21 __ 06 */
movq_m2r(*(input_bytes+56), r1);
pand_r2r(r4, r7); /* r7 = __ __ 15 __ */
pmullw_m2r(*(dequant_matrix_bytes+56), r1); /* r1 = 37 36 35 34 */
por_r2r(r6, r7); /* r7 = 30 21 15 06 = R3 */
pand_m2r(*M(1), r0); /* r0 = __ __ 20 __ */
psrlq_i2r(32, r4); /* r4 = __ __ 17 16 */
movq_r2m(r7, *(output_data_bytes+48)); /* write R3 = r7 */
movq_r2r(r4, r6); /* r6 = __ __ 17 16 */
movq_m2r(*M(3), r7); /* r7 = FF __ __ __ */
pand_r2r(r2, r4); /* r4 = __ __ __ 16 */
movq_m2r(*M(1), r3); /* r3 = __ __ FF __ */
pand_r2r(r1, r7); /* r7 = 37 __ __ __ */
pand_r2r(r5, r3); /* r3 = __ __ 31 __ */
por_r2r(r4, r0); /* r0 = __ __ 20 16 */
psllq_i2r(16, r3); /* r3 = __ 31 __ __ */
por_r2r(r0, r7); /* r7 = 37 __ 20 16 */
movq_m2r(*M(2), r4); /* r4 = __ FF __ __ */
por_r2r(r3, r7); /* r7 = 37 31 20 16 = R4 */
movq_m2r(*(input_bytes+80), r0);
movq_r2r(r4, r3); /* r3 = __ __ FF __ */
pmullw_m2r(*(dequant_matrix_bytes+80), r0); /* r0 = 53 52 51 50 */
pand_r2r(r5, r4); /* r4 = __ 32 __ __ */
movq_r2m(r7, *(output_data_bytes+8)); /* write R4 = r7 */
por_r2r(r4, r6); /* r6 = __ 32 17 16 */
movq_r2r(r3, r4); /* r4 = __ FF __ __ */
psrlq_i2r(16, r6); /* r6 = __ __ 32 17 */
movq_r2r(r0, r7); /* r7 = 53 52 51 50 */
pand_r2r(r1, r4); /* r4 = __ 36 __ __ */
psllq_i2r(48, r7); /* r7 = 50 __ __ __ */
por_r2r(r4, r6); /* r6 = __ 36 32 17 */
movq_m2r(*(input_bytes+88), r4);
por_r2r(r6, r7); /* r7 = 50 36 32 17 = R5 */
pmullw_m2r(*(dequant_matrix_bytes+88), r4); /* r4 = 57 56 55 54 */
psrlq_i2r(16, r3); /* r3 = __ __ FF __ */
movq_r2m(r7, *(output_data_bytes+24)); /* write R5 = r7 */
pand_r2r(r1, r3); /* r3 = __ __ 35 __ */
psrlq_i2r(48, r5); /* r5 = __ __ __ 33 */
pand_r2r(r2, r1); /* r1 = __ __ __ 34 */
movq_m2r(*(input_bytes+104), r6);
por_r2r(r3, r5); /* r5 = __ __ 35 33 */
pmullw_m2r(*(dequant_matrix_bytes+104), r6); /* r6 = 67 66 65 64 */
psrlq_i2r(16, r0); /* r0 = __ 53 52 51 */
movq_r2r(r4, r7); /* r7 = 57 56 55 54 */
movq_r2r(r2, r3); /* r3 = __ __ __ FF */
psllq_i2r(48, r7); /* r7 = 54 __ __ __ */
pand_r2r(r0, r3); /* r3 = __ __ __ 51 */
pxor_r2r(r3, r0); /* r0 = __ 53 52 __ */
psllq_i2r(32, r3); /* r3 = __ 51 __ __ */
por_r2r(r5, r7); /* r7 = 54 __ 35 33 */
movq_r2r(r6, r5); /* r5 = 67 66 65 64 */
pand_m2r(*M(1), r6); /* r6 = __ __ 65 __ */
por_r2r(r3, r7); /* r7 = 54 51 35 33 = R6 */
psllq_i2r(32, r6); /* r6 = 65 __ __ __ */
por_r2r(r1, r0); /* r0 = __ 53 52 34 */
movq_r2m(r7, *(output_data_bytes+40)); /* write R6 = r7 */
por_r2r(r6, r0); /* r0 = 65 53 52 34 = R7 */
movq_m2r(*(input_bytes+120), r7);
movq_r2r(r5, r6); /* r6 = 67 66 65 64 */
pmullw_m2r(*(dequant_matrix_bytes+120), r7); /* r7 = 77 76 75 74 */
psrlq_i2r(32, r5); /* r5 = __ __ 67 66 */
pand_r2r(r2, r6); /* r6 = __ __ __ 64 */
movq_r2r(r5, r1); /* r1 = __ __ 67 66 */
movq_r2m(r0, *(output_data_bytes+56)); /* write R7 = r0 */
pand_r2r(r2, r1); /* r1 = __ __ __ 66 */
movq_m2r(*(input_bytes+112), r0);
movq_r2r(r7, r3); /* r3 = 77 76 75 74 */
pmullw_m2r(*(dequant_matrix_bytes+112), r0); /* r0 = 73 72 71 70 */
psllq_i2r(16, r3); /* r3 = 76 75 74 __ */
pand_m2r(*M(3), r7); /* r7 = 77 __ __ __ */
pxor_r2r(r1, r5); /* r5 = __ __ 67 __ */
por_r2r(r5, r6); /* r6 = __ __ 67 64 */
movq_r2r(r3, r5); /* r5 = 76 75 74 __ */
pand_m2r(*M(3), r5); /* r5 = 76 __ __ __ */
por_r2r(r1, r7); /* r7 = 77 __ __ 66 */
movq_m2r(*(input_bytes+96), r1);
pxor_r2r(r5, r3); /* r3 = __ 75 74 __ */
pmullw_m2r(*(dequant_matrix_bytes+96), r1); /* r1 = 63 62 61 60 */
por_r2r(r3, r7); /* r7 = 77 75 74 66 = R15 */
por_r2r(r5, r6); /* r6 = 76 __ 67 64 */
movq_r2r(r0, r5); /* r5 = 73 72 71 70 */
movq_r2m(r7, *(output_data_bytes+120)); /* store R15 = r7 */
psrlq_i2r(16, r5); /* r5 = __ 73 72 71 */
pand_m2r(*M(2), r5); /* r5 = __ 73 __ __ */
movq_r2r(r0, r7); /* r7 = 73 72 71 70 */
por_r2r(r5, r6); /* r6 = 76 73 67 64 = R14 */
pand_r2r(r2, r0); /* r0 = __ __ __ 70 */
pxor_r2r(r0, r7); /* r7 = 73 72 71 __ */
psllq_i2r(32, r0); /* r0 = __ 70 __ __ */
movq_r2m(r6, *(output_data_bytes+104)); /* write R14 = r6 */
psrlq_i2r(16, r4); /* r4 = __ 57 56 55 */
movq_m2r(*(input_bytes+72), r5);
psllq_i2r(16, r7); /* r7 = 72 71 __ __ */
pmullw_m2r(*(dequant_matrix_bytes+72), r5); /* r5 = 47 46 45 44 */
movq_r2r(r7, r6); /* r6 = 72 71 __ __ */
movq_m2r(*M(2), r3); /* r3 = __ FF __ __ */
psllq_i2r(16, r6); /* r6 = 71 __ __ __ */
pand_m2r(*M(3), r7); /* r7 = 72 __ __ __ */
pand_r2r(r1, r3); /* r3 = __ 62 __ __ */
por_r2r(r0, r7); /* r7 = 72 70 __ __ */
movq_r2r(r1, r0); /* r0 = 63 62 61 60 */
pand_m2r(*M(3), r1); /* r1 = 63 __ __ __ */
por_r2r(r3, r6); /* r6 = 71 62 __ __ */
movq_r2r(r4, r3); /* r3 = __ 57 56 55 */
psrlq_i2r(32, r1); /* r1 = __ __ 63 __ */
pand_r2r(r2, r3); /* r3 = __ __ __ 55 */
por_r2r(r1, r7); /* r7 = 72 70 63 __ */
por_r2r(r3, r7); /* r7 = 72 70 63 55 = R13 */
movq_r2r(r4, r3); /* r3 = __ 57 56 55 */
pand_m2r(*M(1), r3); /* r3 = __ __ 56 __ */
movq_r2r(r5, r1); /* r1 = 47 46 45 44 */
movq_r2m(r7, *(output_data_bytes+88)); /* write R13 = r7 */
psrlq_i2r(48, r5); /* r5 = __ __ __ 47 */
movq_m2r(*(input_bytes+64), r7);
por_r2r(r3, r6); /* r6 = 71 62 56 __ */
pmullw_m2r(*(dequant_matrix_bytes+64), r7); /* r7 = 43 42 41 40 */
por_r2r(r5, r6); /* r6 = 71 62 56 47 = R12 */
pand_m2r(*M(2), r4); /* r4 = __ 57 __ __ */
psllq_i2r(32, r0); /* r0 = 61 60 __ __ */
movq_r2m(r6, *(output_data_bytes+72)); /* write R12 = r6 */
movq_r2r(r0, r6); /* r6 = 61 60 __ __ */
pand_m2r(*M(3), r0); /* r0 = 61 __ __ __ */
psllq_i2r(16, r6); /* r6 = 60 __ __ __ */
movq_m2r(*(input_bytes+40), r5);
movq_r2r(r1, r3); /* r3 = 47 46 45 44 */
pmullw_m2r(*(dequant_matrix_bytes+40), r5); /* r5 = 27 26 25 24 */
psrlq_i2r(16, r1); /* r1 = __ 47 46 45 */
pand_m2r(*M(1), r1); /* r1 = __ __ 46 __ */
por_r2r(r4, r0); /* r0 = 61 57 __ __ */
pand_r2r(r7, r2); /* r2 = __ __ __ 40 */
por_r2r(r1, r0); /* r0 = 61 57 46 __ */
por_r2r(r2, r0); /* r0 = 61 57 46 40 = R11 */
psllq_i2r(16, r3); /* r3 = 46 45 44 __ */
movq_r2r(r3, r4); /* r4 = 46 45 44 __ */
movq_r2r(r5, r2); /* r2 = 27 26 25 24 */
movq_r2m(r0, *(output_data_bytes+112)); /* write R11 = r0 */
psrlq_i2r(48, r2); /* r2 = __ __ __ 27 */
pand_m2r(*M(2), r4); /* r4 = __ 45 __ __ */
por_r2r(r2, r6); /* r6 = 60 __ __ 27 */
movq_m2r(*M(1), r2); /* r2 = __ __ FF __ */
por_r2r(r4, r6); /* r6 = 60 45 __ 27 */
pand_r2r(r7, r2); /* r2 = __ __ 41 __ */
psllq_i2r(32, r3); /* r3 = 44 __ __ __ */
por_m2r(*(output_data_bytes+80), r3); /* r3 = 44 __ __ 23 */
por_r2r(r2, r6); /* r6 = 60 45 41 27 = R10 */
movq_m2r(*M(3), r2); /* r2 = FF __ __ __ */
psllq_i2r(16, r5); /* r5 = 26 25 24 __ */
movq_r2m(r6, *(output_data_bytes+96)); /* store R10 = r6 */
pand_r2r(r5, r2); /* r2 = 26 __ __ __ */
movq_m2r(*M(2), r6); /* r6 = __ FF __ __ */
pxor_r2r(r2, r5); /* r5 = __ 25 24 __ */
pand_r2r(r7, r6); /* r6 = __ 42 __ __ */
psrlq_i2r(32, r2); /* r2 = __ __ 26 __ */
pand_m2r(*M(3), r7); /* r7 = 43 __ __ __ */
por_r2r(r2, r3); /* r3 = 44 __ 26 23 */
por_m2r(*(output_data_bytes+64), r7); /* r7 = 43 __ __ 12 */
por_r2r(r3, r6); /* r6 = 44 42 26 23 = R9 */
por_r2r(r5, r7); /* r7 = 43 25 24 12 = R8 */
movq_r2m(r6, *(output_data_bytes+80)); /* store R9 = r6 */
movq_r2m(r7, *(output_data_bytes+64)); /* store R8 = r7 */
#undef M
/* at this point, function has completed dequantization + dezigzag +
* partial transposition; now do the idct itself */
#define I(K) (output_data + K * 8)
#define J(K) (output_data + ((K - 4) * 8) + 4)

16
libavcodec/i386/vp3dsp_sse2.c
View File

@ -796,24 +796,16 @@ static unsigned short __align16 SSE2_idct_data[7 * 8] =
} /* end of SSE2_Dequantize Macro */
void vp3_dsp_init_sse2(void)
{
/* nop */
}
void vp3_idct_sse2(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, int16_t *output_data)
void ff_vp3_idct_sse2(int16_t *input_data)
{
unsigned char *input_bytes = (unsigned char *)input_data;
unsigned char *dequant_matrix_bytes = (unsigned char *)dequant_matrix;
unsigned char *dequant_const_bytes = (unsigned char *)SSE2_dequant_const;
unsigned char *output_data_bytes = (unsigned char *)output_data;
unsigned char *output_data_bytes = (unsigned char *)input_data;
unsigned char *idct_data_bytes = (unsigned char *)SSE2_idct_data;
unsigned char *Eight = (unsigned char *)eight_data;
#define eax input_bytes
#define ebx dequant_matrix_bytes
//#define ebx dequant_matrix_bytes
#define ecx dequant_const_bytes
#define edx idct_data_bytes
@ -821,7 +813,7 @@ void vp3_idct_sse2(int16_t *input_data, int16_t *dequant_matrix,
#define O(i) (ebx + 16 * i)
#define C(i) (edx + 16 * (i-1))
SSE2_Dequantize();
// SSE2_Dequantize();
#undef ebx
#define ebx output_data_bytes