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gstreamer/libs/colorspace/yuv2rgb.c
Wim Taymans a3aad0c1a2 Fixed a yuv to bgr32 bug, red and blue were swapped. Thanks to 
Original commit message from CVS:
Fixed a yuv to bgr32 bug, red and blue were swapped. Thanks to
Trigon (Bert Boer <bert@mermaid.geenpunt.nl>).
2001-01-22 19:21:24 +00:00

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <math.h>
#include <stdlib.h>
//#define DEBUG_ENABLED
#include <gst/gst.h>
#include <gstcolorspace.h>
//#undef HAVE_LIBMMX
#ifdef HAVE_LIBMMX
#include "mmx.h"
#endif
#include "yuv2rgb.h"
static void gst_colorspace_yuv420P_to_bgr16_mmx(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_bgr32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_bgr32_mmx(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_rgb24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_bgr24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_rgb16(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv420P_to_bgr16_mmx(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
static void gst_colorspace_yuv_to_rgb16(GstColorSpaceYUVTables *tables,
unsigned char *lum,
unsigned char *cr,
unsigned char *cb,
unsigned char *out,
int cols, int rows);
static void gst_colorspace_yuv_to_rgb24(GstColorSpaceYUVTables *tables,
unsigned char *lum,
unsigned char *cr,
unsigned char *cb,
unsigned char *out,
int cols, int rows);
static void gst_colorspace_yuv_to_rgb32(GstColorSpaceYUVTables *tables,
unsigned char *lum,
unsigned char *cr,
unsigned char *cb,
unsigned char *out,
int cols, int rows);
#ifdef HAVE_LIBMMX
static void gst_colorspace_yuv_to_bgr32_mmx(GstColorSpaceYUVTables *tables,
unsigned char *lum,
unsigned char *cr,
unsigned char *cb,
unsigned char *out,
int cols, int rows);
extern void gst_colorspace_yuv_to_bgr16_mmx(GstColorSpaceYUVTables *tables,
unsigned char *lum,
unsigned char *cr,
unsigned char *cb,
unsigned char *out,
int cols, int rows);
#endif
static GstColorSpaceYUVTables * gst_colorspace_init_yuv(long depth,
long red_mask, long green_mask, long blue_mask);
GstColorSpaceConvertFunction gst_colorspace_yuv2rgb_get_converter(GstColorSpaceConverter *space, GstColorSpaceType src, GstColorSpaceType dest) {
GST_DEBUG (0,"gst_colorspace_yuv2rgb_get_converter %d %d\n", src, dest);
switch(src) {
case GST_COLORSPACE_YUV420P:
space->insize = space->width*space->height+space->width*space->height/2;
switch(dest) {
case GST_COLORSPACE_BGR32:
space->color_tables = gst_colorspace_init_yuv(32, 0xFF0000, 0x00FF00, 0x0000FF);
space->outsize = space->width*space->height*4;
#ifdef HAVE_LIBMMX
return gst_colorspace_yuv420P_to_bgr32_mmx;
#else
return gst_colorspace_yuv420P_to_bgr32;
#endif
case GST_COLORSPACE_RGB32:
space->color_tables = gst_colorspace_init_yuv(32, 0x0000FF, 0x00FF00, 0xFF0000);
space->outsize = space->width*space->height*4;
return gst_colorspace_yuv420P_to_rgb32;
case GST_COLORSPACE_RGB24:
space->color_tables = gst_colorspace_init_yuv(24, 0x0000FF, 0x00FF00, 0xFF0000);
space->outsize = space->width*space->height*3;
return gst_colorspace_yuv420P_to_rgb24;
case GST_COLORSPACE_BGR24:
space->color_tables = gst_colorspace_init_yuv(24, 0xFF0000, 0x00FF00, 0x0000FF);
space->outsize = space->width*space->height*3;
return gst_colorspace_yuv420P_to_bgr24;
case GST_COLORSPACE_RGB555:
case GST_COLORSPACE_RGB565:
case GST_COLORSPACE_BGR555:
g_return_val_if_fail(space->visual != NULL, NULL);
space->color_tables = gst_colorspace_init_yuv(16, space->visual->red_mask, space->visual->green_mask, space->visual->blue_mask);
space->outsize = space->width*space->height*2;
return gst_colorspace_yuv420P_to_rgb16;
case GST_COLORSPACE_BGR565:
g_return_val_if_fail(space->visual != NULL, NULL);
space->color_tables = gst_colorspace_init_yuv(16, space->visual->red_mask, space->visual->green_mask, space->visual->blue_mask);
space->outsize = space->width*space->height*2;
#ifdef HAVE_LIBMMX
return gst_colorspace_yuv420P_to_bgr16_mmx;
#else
return gst_colorspace_yuv420P_to_rgb16;
#endif
default:
break;
}
break;
default:
break;
}
g_print("gst_colorspace_yuv2rgb not implemented\n");
return NULL;
}
static void gst_colorspace_yuv420P_to_bgr32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
{
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_bgr32\n");
size = space->width * space->height;
gst_colorspace_yuv_to_rgb32(space->color_tables,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
static void gst_colorspace_yuv420P_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
{
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_rgb32\n");
size = space->width * space->height;
gst_colorspace_yuv_to_rgb32(space->color_tables,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
static void gst_colorspace_yuv420P_to_bgr24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest) {
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_bgr24\n");
size = space->width * space->height;
gst_colorspace_yuv_to_rgb24(space->color_tables,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
static void gst_colorspace_yuv420P_to_rgb24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest) {
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_rgb24\n");
size = space->width * space->height;
gst_colorspace_yuv_to_rgb24(space->color_tables,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
static void gst_colorspace_yuv420P_to_rgb16(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest) {
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_rgb16\n");
size = space->width * space->height;
gst_colorspace_yuv_to_rgb16(space->color_tables,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
#ifdef HAVE_LIBMMX
static void gst_colorspace_yuv420P_to_bgr32_mmx(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest) {
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_rgb32_mmx\n");
size = space->width * space->height;
gst_colorspace_yuv_to_bgr32_mmx(NULL,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
}
static void gst_colorspace_yuv420P_to_bgr16_mmx(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest) {
int size;
GST_DEBUG (0,"gst_colorspace_yuv420P_to_bgr16_mmx \n");
size = space->width * space->height;
gst_colorspace_yuv_to_bgr16_mmx(NULL,
src, // Y component
src+size, // cr component
src+size+(size>>2), // cb component
dest,
space->height,
space->width);
GST_DEBUG (0,"gst_colorspace_yuv420P_to_bgr16_mmx done\n");
}
#endif
/*
* How many 1 bits are there in the longword.
* Low performance, do not call often.
*/
static int
number_of_bits_set(a)
unsigned long a;
{
if(!a) return 0;
if(a & 1) return 1 + number_of_bits_set(a >> 1);
return(number_of_bits_set(a >> 1));
}
/*
* Shift the 0s in the least significant end out of the longword.
* Low performance, do not call often.
*/
static unsigned long
shifted_down(a)
unsigned long a;
{
if(!a) return 0;
if(a & 1) return a;
return a >> 1;
}
/*
* How many 0 bits are there at most significant end of longword.
* Low performance, do not call often.
*/
static int
free_bits_at_top(a)
unsigned long a;
{
/* assume char is 8 bits */
if(!a) return sizeof(unsigned long) * 8;
/* assume twos complement */
if(((long)a) < 0l) return 0;
return 1 + free_bits_at_top ( a << 1);
}
/*
* How many 0 bits are there at least significant end of longword.
* Low performance, do not call often.
*/
static int
free_bits_at_bottom(a)
unsigned long a;
{
/* assume char is 8 bits */
if(!a) return sizeof(unsigned long) * 8;
if(((long)a) & 1l) return 0;
return 1 + free_bits_at_bottom ( a >> 1);
}
/*
*--------------------------------------------------------------
*
* InitColor16Dither --
*
* To get rid of the multiply and other conversions in color
* dither, we use a lookup table.
*
* Results:
* None.
*
* Side effects:
* The lookup tables are initialized.
*
*--------------------------------------------------------------
*/
static GstColorSpaceYUVTables *
gst_colorspace_init_yuv(long depth, long red_mask, long green_mask, long blue_mask)
{
int CR, CB, i;
int *L_tab, *Cr_r_tab, *Cr_g_tab, *Cb_g_tab, *Cb_b_tab;
long *r_2_pix_alloc;
long *g_2_pix_alloc;
long *b_2_pix_alloc;
GstColorSpaceYUVTables *tables = g_malloc(sizeof(GstColorSpaceYUVTables));
L_tab = tables->L_tab = (int *)malloc(256*sizeof(int));
Cr_r_tab = tables->Cr_r_tab = (int *)malloc(256*sizeof(int));
Cr_g_tab = tables->Cr_g_tab = (int *)malloc(256*sizeof(int));
Cb_g_tab = tables->Cb_g_tab = (int *)malloc(256*sizeof(int));
Cb_b_tab = tables->Cb_b_tab = (int *)malloc(256*sizeof(int));
r_2_pix_alloc = (long *)malloc(768*sizeof(long));
g_2_pix_alloc = (long *)malloc(768*sizeof(long));
b_2_pix_alloc = (long *)malloc(768*sizeof(long));
if (L_tab == NULL ||
Cr_r_tab == NULL ||
Cr_g_tab == NULL ||
Cb_g_tab == NULL ||
Cb_b_tab == NULL ||
r_2_pix_alloc == NULL ||
g_2_pix_alloc == NULL ||
b_2_pix_alloc == NULL) {
fprintf(stderr, "Could not get enough memory in InitColorDither\n");
exit(1);
}
for (i=0; i<256; i++) {
L_tab[i] = i;
/*
if (gammaCorrectFlag) {
L_tab[i] = GAMMA_CORRECTION(i);
}
*/
CB = CR = i;
/*
if (chromaCorrectFlag) {
CB -= 128;
CB = CHROMA_CORRECTION128(CB);
CR -= 128;
CR = CHROMA_CORRECTION128(CR);
}
else
*/
{
CB -= 128; CR -= 128;
}
Cr_r_tab[i] = (0.419/0.299) * CR;
Cr_g_tab[i] = -(0.299/0.419) * CR;
Cb_g_tab[i] = -(0.114/0.331) * CB;
Cb_b_tab[i] = (0.587/0.331) * CB;
}
/*
* Set up entries 0-255 in rgb-to-pixel value tables.
*/
for (i = 0; i < 256; i++) {
r_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(red_mask));
r_2_pix_alloc[i + 256] <<= free_bits_at_bottom(red_mask);
g_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(green_mask));
g_2_pix_alloc[i + 256] <<= free_bits_at_bottom(green_mask);
b_2_pix_alloc[i + 256] = i >> (8 - number_of_bits_set(blue_mask));
b_2_pix_alloc[i + 256] <<= free_bits_at_bottom(blue_mask);
/*
* If we have 16-bit output depth, then we double the value
* in the top word. This means that we can write out both
* pixels in the pixel doubling mode with one op. It is
* harmless in the normal case as storing a 32-bit value
* through a short pointer will lose the top bits anyway.
* A similar optimisation for Alpha for 64 bit has been
* prepared for, but is not yet implemented.
*/
if(!(depth == 32) && !(depth == 24)) {
r_2_pix_alloc[i + 256] |= (r_2_pix_alloc[i + 256]) << 16;
g_2_pix_alloc[i + 256] |= (g_2_pix_alloc[i + 256]) << 16;
b_2_pix_alloc[i + 256] |= (b_2_pix_alloc[i + 256]) << 16;
}
#ifdef SIXTYFOUR_BIT
if(depth == 32) {
r_2_pix_alloc[i + 256] |= (r_2_pix_alloc[i + 256]) << 32;
g_2_pix_alloc[i + 256] |= (g_2_pix_alloc[i + 256]) << 32;
b_2_pix_alloc[i + 256] |= (b_2_pix_alloc[i + 256]) << 32;
}
#endif
}
/*
* Spread out the values we have to the rest of the array so that
* we do not need to check for overflow.
*/
for (i = 0; i < 256; i++) {
r_2_pix_alloc[i] = r_2_pix_alloc[256];
r_2_pix_alloc[i+ 512] = r_2_pix_alloc[511];
g_2_pix_alloc[i] = g_2_pix_alloc[256];
g_2_pix_alloc[i+ 512] = g_2_pix_alloc[511];
b_2_pix_alloc[i] = b_2_pix_alloc[256];
b_2_pix_alloc[i+ 512] = b_2_pix_alloc[511];
}
tables->r_2_pix = r_2_pix_alloc + 256;
tables->g_2_pix = g_2_pix_alloc + 256;
tables->b_2_pix = b_2_pix_alloc + 256;
return tables;
}
/*
*--------------------------------------------------------------
*
* Color16DitherImage --
*
* Converts image into 16 bit color.
*
* Results:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
static void
gst_colorspace_yuv_to_rgb16(tables, lum, cb, cr, out, rows, cols)
GstColorSpaceYUVTables *tables;
unsigned char *lum;
unsigned char *cr;
unsigned char *cb;
unsigned char *out;
int cols, rows;
{
int L, CR, CB;
unsigned short *row1, *row2;
unsigned char *lum2;
int x, y;
int cr_r;
int crb_g;
int cb_b;
int cols_2 = cols>>1;
row1 = (unsigned short *)out;
row2 = row1 + cols;
lum2 = lum + cols;
for (y=rows>>1; y; y--) {
for (x=cols_2; x; x--) {
CR = *cr++;
CB = *cb++;
cr_r = tables->Cr_r_tab[CR];
crb_g = tables->Cr_g_tab[CR] + tables->Cb_g_tab[CB];
cb_b = tables->Cb_b_tab[CB];
L = tables->L_tab[(int) *lum++];
*row1++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
L = tables->L_tab[(int) *lum++];
*row1++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
/*
* Now, do second row.
*/
L = tables->L_tab[(int) *lum2++];
*row2++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
L = tables->L_tab[(int) *lum2++];
*row2++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
}
/*
* These values are at the start of the next line, (due
* to the ++'s above),but they need to be at the start
* of the line after that.
*/
lum = lum2;
row1 = row2;
lum2 += cols;
row2 += cols;
}
}
static void
gst_colorspace_yuv_to_rgb24(tables, lum, cb, cr, out, rows, cols)
GstColorSpaceYUVTables *tables;
unsigned char *lum;
unsigned char *cr;
unsigned char *cb;
unsigned char *out;
int cols, rows;
{
int L, CR, CB;
unsigned char *row1, *row2;
unsigned char *lum2;
int x, y;
int cr_r;
int crb_g;
int cb_b;
int cols_2 = cols>>1;
int cols_3 = cols*3;
unsigned char pixels[4];
row1 = out;
row2 = row1 + cols_3;
lum2 = lum + cols;
for (y=rows>>1; y; y--) {
for (x=cols_2; x; x--) {
CR = *cr++;
CB = *cb++;
cr_r = tables->Cr_r_tab[CR];
crb_g = tables->Cr_g_tab[CR] + tables->Cb_g_tab[CB];
cb_b = tables->Cb_b_tab[CB];
L = tables->L_tab[(int) *lum++];
((int *)pixels)[0] = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
*row1++ = pixels[0]; *row1++ = pixels[1]; *row1++ = pixels[2];
L = tables->L_tab[(int) *lum++];
((int *)pixels)[0] = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
*row1++ = pixels[0]; *row1++ = pixels[1]; *row1++ = pixels[2];
/*
* Now, do second row.
*/
L = tables->L_tab [(int) *lum2++];
((int *)pixels)[0] = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
*row2++ = pixels[0]; *row2++ = pixels[1]; *row2++ = pixels[2];
L = tables->L_tab [(int) *lum2++];
((int *)pixels)[0] = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
*row2++ = pixels[0]; *row2++ = pixels[1]; *row2++ = pixels[2];
}
lum = lum2;
row1 = row2;
lum2 += cols;
row2 += cols_3;
}
}
/*
*--------------------------------------------------------------
*
* Color32DitherImage --
*
* Converts image into 32 bit color (or 24-bit non-packed).
*
* Results:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/*
* This is a copysoft version of the function above with ints instead
* of shorts to cause a 4-byte pixel size
*/
static void
gst_colorspace_yuv_to_rgb32(tables, lum, cb, cr, out, rows, cols)
GstColorSpaceYUVTables *tables;
unsigned char *lum;
unsigned char *cr;
unsigned char *cb;
unsigned char *out;
int cols, rows;
{
int L, CR, CB;
unsigned int *row1, *row2;
unsigned char *lum2;
int x, y;
int cr_r;
int crb_g;
int cb_b;
int cols_2 = cols>>1;
row1 = (guint32 *)out;
row2 = row1 + cols;
lum2 = lum + cols;
for (y=rows>>1; y; y--) {
for (x=cols_2; x; x--) {
CR = *cr++;
CB = *cb++;
cr_r = tables->Cr_r_tab[CR];
crb_g = tables->Cr_g_tab[CR] + tables->Cb_g_tab[CB];
cb_b = tables->Cb_b_tab[CB];
L = tables->L_tab[(int) *lum++];
*row1++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
L = tables->L_tab[(int) *lum++];
*row1++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
/*
* Now, do second row.
*/
L = tables->L_tab [(int) *lum2++];
*row2++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
L = tables->L_tab [(int) *lum2++];
*row2++ = (tables->r_2_pix[L+cr_r] | tables->g_2_pix[L+crb_g] | tables->b_2_pix[L+cb_b]);
}
lum = lum2;
row1 = row2;
lum2 += cols;
row2 += cols;
}
}
#ifdef HAVE_LIBMMX
static mmx_t MMX_80w = (mmx_t)(long long)0x0080008000800080LL; //dd 00080 0080h, 000800080h
static mmx_t MMX_00FFw = (mmx_t)(long long)0x00ff00ff00ff00ffLL; //dd 000FF 00FFh, 000FF00FFh
static mmx_t MMX_FF00w = (mmx_t)(long long)0xff00ff00ff00ff00LL; //dd 000FF 00FFh, 000FF00FFh
static mmx_t MMX32_Vredcoeff = (mmx_t)(long long)0x0059005900590059LL;
static mmx_t MMX32_Ubluecoeff = (mmx_t)(long long)0x0072007200720072LL;
static mmx_t MMX32_Ugrncoeff = (mmx_t)(long long)0xffeaffeaffeaffeaLL;
static mmx_t MMX32_Vgrncoeff = (mmx_t)(long long)0xffd2ffd2ffd2ffd2LL;
static void
gst_colorspace_yuv_to_bgr32_mmx(tables, lum, cr, cb, out, rows, cols)
GstColorSpaceYUVTables *tables;
unsigned char *lum;
unsigned char *cr;
unsigned char *cb;
unsigned char *out;
int cols, rows;
{
guint32 *row1 = (guint32 *)out; // 32 bit target
int cols4 = cols>>2;
int y, x;
for (y=rows>>1; y; y--) {
for (x=cols4; x; x--) {
// create Cr (result in mm1)
movd_m2r(*(mmx_t *)cb, mm1); // 0 0 0 0 v3 v2 v1 v0
pxor_r2r(mm7, mm7); // 00 00 00 00 00 00 00 00
movd_m2r(*(mmx_t *)lum, mm2); // 0 0 0 0 l3 l2 l1 l0
punpcklbw_r2r(mm7, mm1); // 0 v3 0 v2 00 v1 00 v0
punpckldq_r2r(mm1, mm1); // 00 v1 00 v0 00 v1 00 v0
psubw_m2r(MMX_80w, mm1); // mm1-128:r1 r1 r0 r0 r1 r1 r0 r0
// create Cr_g (result in mm0)
movq_r2r(mm1, mm0); // r1 r1 r0 r0 r1 r1 r0 r0
pmullw_m2r(MMX32_Vgrncoeff, mm0); // red*-46dec=0.7136*64
pmullw_m2r(MMX32_Vredcoeff, mm1); // red*89dec=1.4013*64
psraw_i2r(6, mm0); // red=red/64
psraw_i2r(6, mm1); // red=red/64
// create L1 L2 (result in mm2,mm4)
// L2=lum+cols
movq_m2r(*(mmx_t *)(lum+cols),mm3); // 0 0 0 0 L3 L2 L1 L0
punpckldq_r2r(mm3, mm2); // L3 L2 L1 L0 l3 l2 l1 l0
movq_r2r(mm2, mm4); // L3 L2 L1 L0 l3 l2 l1 l0
pand_m2r(MMX_FF00w, mm2); // L3 0 L1 0 l3 0 l1 0
pand_m2r(MMX_00FFw, mm4); // 0 L2 0 L0 0 l2 0 l0
psrlw_i2r(8, mm2); // 0 L3 0 L1 0 l3 0 l1
// create R (result in mm6)
movq_r2r(mm2, mm5); // 0 L3 0 L1 0 l3 0 l1
movq_r2r(mm4, mm6); // 0 L2 0 L0 0 l2 0 l0
paddsw_r2r(mm1, mm5); // lum1+red:x R3 x R1 x r3 x r1
paddsw_r2r(mm1, mm6); // lum1+red:x R2 x R0 x r2 x r0
packuswb_r2r(mm5, mm5); // R3 R1 r3 r1 R3 R1 r3 r1
packuswb_r2r(mm6, mm6); // R2 R0 r2 r0 R2 R0 r2 r0
pxor_r2r(mm7, mm7); // 00 00 00 00 00 00 00 00
punpcklbw_r2r(mm5, mm6); // R3 R2 R1 R0 r3 r2 r1 r0
// create Cb (result in mm1)
movd_m2r(*(mmx_t *)cr, mm1); // 0 0 0 0 u3 u2 u1 u0
punpcklbw_r2r(mm7, mm1); // 0 u3 0 u2 00 u1 00 u0
punpckldq_r2r(mm1, mm1); // 00 u1 00 u0 00 u1 00 u0
psubw_m2r(MMX_80w, mm1); // mm1-128:u1 u1 u0 u0 u1 u1 u0 u0
// create Cb_g (result in mm5)
movq_r2r(mm1, mm5); // u1 u1 u0 u0 u1 u1 u0 u0
pmullw_m2r(MMX32_Ugrncoeff, mm5); // blue*-109dec=1.7129*64
pmullw_m2r(MMX32_Ubluecoeff, mm1); // blue*114dec=1.78125*64
psraw_i2r(6, mm5); // blue=red/64
psraw_i2r(6, mm1); // blue=blue/64
// create G (result in mm7)
movq_r2r(mm2, mm3); // 0 L3 0 L1 0 l3 0 l1
movq_r2r(mm4, mm7); // 0 L2 0 L0 0 l2 0 l1
paddsw_r2r(mm5, mm3); // lum1+Cb_g:x G3t x G1t x g3t x g1t
paddsw_r2r(mm5, mm7); // lum1+Cb_g:x G2t x G0t x g2t x g0t
paddsw_r2r(mm0, mm3); // lum1+Cr_g:x G3 x G1 x g3 x g1
paddsw_r2r(mm0, mm7); // lum1+blue:x G2 x G0 x g2 x g0
packuswb_r2r(mm3, mm3); // G3 G1 g3 g1 G3 G1 g3 g1
packuswb_r2r(mm7, mm7); // G2 G0 g2 g0 G2 G0 g2 g0
punpcklbw_r2r(mm3, mm7); // G3 G2 G1 G0 g3 g2 g1 g0
// create B (result in mm5)
movq_r2r(mm2, mm3); // 0 L3 0 L1 0 l3 0 l1
movq_r2r(mm4, mm5); // 0 L2 0 L0 0 l2 0 l1
paddsw_r2r(mm1, mm3); // lum1+blue:x B3 x B1 x b3 x b1
paddsw_r2r(mm1, mm5); // lum1+blue:x B2 x B0 x b2 x b0
packuswb_r2r(mm3, mm3); // B3 B1 b3 b1 B3 B1 b3 b1
packuswb_r2r(mm5, mm5); // B2 B0 b2 b0 B2 B0 b2 b0
punpcklbw_r2r(mm3, mm5); // B3 B2 B1 B0 b3 b2 b1 b0
// fill destination row1 (needed are mm6=Rr,mm7=Gg,mm5=Bb)
pxor_r2r(mm2, mm2); // 0 0 0 0 0 0 0 0
pxor_r2r(mm4, mm4); // 0 0 0 0 0 0 0 0
movq_r2r(mm6, mm1); // R3 R2 R1 R0 r3 r2 r1 r0
movq_r2r(mm5, mm3); // B3 B2 B1 B0 b3 b2 b1 b0
// process lower lum
punpcklbw_r2r(mm4, mm1); // 0 r3 0 r2 0 r1 0 r0
punpcklbw_r2r(mm4, mm3); // 0 b3 0 b2 0 b1 0 b0
movq_r2r(mm1, mm2); // 0 r3 0 r2 0 r1 0 r0
movq_r2r(mm3, mm0); // 0 b3 0 b2 0 b1 0 b0
punpcklwd_r2r(mm1, mm3); // 0 r1 0 b1 0 r0 0 b0
punpckhwd_r2r(mm2, mm0); // 0 r3 0 b3 0 r2 0 b2
pxor_r2r(mm2, mm2); // 0 0 0 0 0 0 0 0
movq_r2r(mm7, mm1); // G3 G2 G1 G0 g3 g2 g1 g0
punpcklbw_r2r(mm1, mm2); // g3 0 g2 0 g1 0 g0 0
punpcklwd_r2r(mm4, mm2); // 0 0 g1 0 0 0 g0 0
por_r2r(mm3, mm2); // 0 r1 g1 b1 0 r0 g0 b0
movq_r2m(mm2, *(mmx_t *)row1); // wrote out ! row1
pxor_r2r(mm2, mm2); // 0 0 0 0 0 0 0 0
punpcklbw_r2r(mm1, mm4); // g3 0 g2 0 g1 0 g0 0
punpckhwd_r2r(mm2, mm4); // 0 0 g3 0 0 0 g2 0
por_r2r(mm0, mm4); // 0 r3 g3 b3 0 r2 g2 b2
movq_r2m(mm4, *(mmx_t *)(row1+2)); // wrote out ! row1
// fill destination row2 (needed are mm6=Rr,mm7=Gg,mm5=Bb)
// this can be done "destructive"
pxor_r2r(mm2, mm2); // 0 0 0 0 0 0 0 0
punpckhbw_r2r(mm2, mm6); // 0 R3 0 R2 0 R1 0 R0
punpckhbw_r2r(mm1, mm5); // G3 B3 G2 B2 G1 B1 G0 B0
movq_r2r(mm5, mm1); // G3 B3 G2 B2 G1 B1 G0 B0
punpcklwd_r2r(mm6, mm1); // 0 R1 G1 B1 0 R0 G0 B0
movq_r2m(mm1, *(mmx_t *)(row1+cols)); // wrote out ! row2
punpckhwd_r2r(mm6, mm5); // 0 R3 G3 B3 0 R2 G2 B2
movq_r2m(mm5, *(mmx_t *)(row1+cols+2)); // wrote out ! row2
lum+=4;
cr+=2;
cb+=2;
row1 +=4;
}
lum += cols;
row1 += cols;
}
emms();
}
#endif
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