#include "opj_includes.h"
-#include "opj_convert.h"
-/*
- * The yuv code is based on cinelerra-VERSION/quicktime/rtjpeg_core.c
-*/
-#define KcrR 76284
-#define KcrG 53281
-#define KcbG 25625
-#define KcbB 132252
-#define Ky 76284
-
-static void opj_convert_yuv444(opj_image_t *img)
-{
- int *d0, *d1, *d2, *red, *green, *blue;
- const int *sY, *sCb, *sCr;
- int maxw, maxh, max, i;
- int R, G, B, C, D, E;
- int shiftR, shiftG, shiftB;
- int addR, addG, addB;
-
- maxw = img->comps[0].w; maxh = img->comps[0].h;
- max = maxw * maxh;
-
- sY = img->comps[0].data;
- sCb = img->comps[1].data;
- sCr = img->comps[2].data;
-
- if(img->comps[0].prec > 8)
- shiftR = img->comps[0].prec - 8;
- else
- shiftR = 0;
-
- if(img->comps[1].prec > 8)
- shiftG = img->comps[1].prec - 8;
- else
- shiftG = 0;
-
- if(img->comps[2].prec > 8)
- shiftB = img->comps[2].prec - 8;
- else
- shiftB = 0;
-
- addR = (img->comps[0].sgnd ? 1 << (img->comps[0].prec - 1) : 0);
- addG = (img->comps[1].sgnd ? 1 << (img->comps[1].prec - 1) : 0);
- addB = (img->comps[2].sgnd ? 1 << (img->comps[2].prec - 1) : 0);
-
- d0 = red = (int*)opj_malloc(sizeof(int) * max);
- d1 = green = (int*)opj_malloc(sizeof(int) * max);
- d2 = blue = (int*)opj_malloc(sizeof(int) * max);
-
- for(i = 0; i < max; ++i)
- {
- C = ((*sY++ + addR) >> shiftR) - 16;
- D = ((*sCb++ + addG) >> shiftG) - 128;
- E = ((*sCr++ + addB) >> shiftB) - 128;
-
-
- R = (298 * C + 409 * E + 128)>>8;
- if(R < 0) R = 0; else if(R > 255) R = 255;
-
- G = (298 * C - 100 * D - 208 * E + 128)>>8;
- if(G < 0) G = 0; else if(G > 255) G = 255;
-
- B = (298 * C + 516 * D + 128)>>8;
- if(B < 0) B = 0; else if(B > 255) B = 255;
-
- *d0++ = R; *d1++ = G; *d2++ = B;
-
- }
- opj_free(img->comps[0].data); img->comps[0].data = red;
- opj_free(img->comps[1].data); img->comps[1].data = green;
- opj_free(img->comps[2].data); img->comps[2].data = blue;
-
- img->comps[0].prec = 8; img->comps[1].prec = 8; img->comps[2].prec = 8;
-}/* opj_convert_yuv444() */
-
-static void yuv422rgb(int *src_y, int *src_cb, int *src_cr, int *red,
- int *green, int *blue, int width, int height)
-{
- int i, j, tmp;
- int y, crR, crG, cbG, cbB;
-
- for(i=0; i<height; i++)
- {
- for(j=0; j<width; j+=2)
- {
- crR=(*src_cr - 128)*KcrR;
- crG=(*src_cr - 128)*KcrG; ++src_cr;
- cbG=(*src_cb - 128)*KcbG;
- cbB=(*src_cb - 128)*KcbB; ++src_cb;
- y=(src_y[j]-16)*Ky;
+/*--------------------------------------------------------
+Matrix f�r sYCC, Amendment 1 to IEC 61966-2-1
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red++ = tmp;
+Y : 0.299 0.587 0.114 :R
+Cb: -0.1687 -0.3312 0.5 :G
+Cr: 0.5 -0.4187 -0.0812 :B
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green++ = tmp;
+Inverse:
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue = tmp;
+R: 1 -3.68213e-05 1.40199 :Y
+G: 1.00003 -0.344125 -0.714128 :Cb - 2^(prec - 1)
+B: 0.999823 1.77204 -8.04142e-06 :Cr - 2^(prec - 1)
- y=(src_y[j+1]-16)*Ky;
+-----------------------------------------------------------*/
+static void sycc_to_rgb(int offset, int upb, int y, int cb, int cr,
+ int *out_r, int *out_g, int *out_b)
+{
+ int r, g, b;
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red++ = tmp;
+ cb -= offset; cr -= offset;
+ r = y + (int)(1.402 * (float)cr);
+ if(r < 0) r = 0; else if(r > upb) r = upb; *out_r = r;
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green++ = tmp;
+ g = y - (int)(0.344 * (float)cb + 0.714 * (float)cr);
+ if(g < 0) g = 0; else if(g > upb) g = upb; *out_g = g;
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue++ = tmp;
- }
- src_y += width;
- }
-}/* yuv422rgb() */
+ b = y + (int)(1.772 * (float)cb);
+ if(b < 0) b = 0; else if(b > upb) b = upb; *out_b = b;
+}
-static void yuv420rgb(const int *src_y, const int *src_cb,
- const int *src_cr, int *red, int *green, int *blue,
- int width, int height)
+static void opj_convert_sycc444(opj_image_t *img)
{
- int *red_e, *green_e, *blue_e, *red_o, *green_o, *blue_o;
- int y, crR, crG, cbG, cbB, i, j, tmp;
- int yskip;
-
- yskip = width;
- red_e = red; green_e = green; blue_e = blue;
- red_o = red + width; green_o = green + width; blue_o = blue + width;
-
- for(i=0; i < (height>>1); i++)
- {
- for(j=0; j < width; j+=2)
- {
- crR=(*src_cr-128)*KcrR;
- crG=(*(src_cr++)-128)*KcrG;
- cbG=(*src_cb-128)*KcbG;
- cbB=(*(src_cb++)-128)*KcbB;
-
- y=(src_y[j]-16)*Ky;
+ int *d0, *d1, *d2, *r, *g, *b;
+ const int *y, *cb, *cr;
+ int maxw, maxh, max, i, offset, upb;
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ i = img->comps[0].prec;
+ offset = 1<<(i - 1); upb = (1<<i)-1;
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ maxw = img->comps[0].w; maxh = img->comps[0].h;
+ max = maxw * maxh;
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ y = img->comps[0].data;
+ cb = img->comps[1].data;
+ cr = img->comps[2].data;
- y=(src_y[j+1]-16)*Ky;
+ d0 = r = (int*)opj_malloc(sizeof(int) * max);
+ d1 = g = (int*)opj_malloc(sizeof(int) * max);
+ d2 = b = (int*)opj_malloc(sizeof(int) * max);
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ for(i = 0; i < max; ++i)
+ {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ ++y; ++cb; ++cr; ++r; ++g; ++b;
+ }
+ opj_free(img->comps[0].data); img->comps[0].data = d0;
+ opj_free(img->comps[1].data); img->comps[1].data = d1;
+ opj_free(img->comps[2].data); img->comps[2].data = d2;
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue_e++ = tmp;//*(bufoute++)=(tmp>255)?255:((tmp<0)?0:tmp);
+}/* opj_convert_sycc444() */
- y=(src_y[j+yskip]-16)*Ky;
+static void opj_convert_sycc422(opj_image_t *img)
+{
+ int *d0, *d1, *d2, *r, *g, *b;
+ const int *y, *cb, *cr;
+ int maxw, maxh, max, offset, upb;
+ int i, j;
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ i = img->comps[0].prec;
+ offset = 1<<(i - 1); upb = (1<<i)-1;
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ maxw = img->comps[0].w; maxh = img->comps[0].h;
+ max = maxw * maxh;
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ y = img->comps[0].data;
+ cb = img->comps[1].data;
+ cr = img->comps[2].data;
- y=(src_y[j+1+yskip]-16)*Ky;
+ d0 = r = (int*)opj_malloc(sizeof(int) * max);
+ d1 = g = (int*)opj_malloc(sizeof(int) * max);
+ d2 = b = (int*)opj_malloc(sizeof(int) * max);
- tmp=(y+crR)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *red_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ for(i=0; i < maxh; ++i)
+ {
+ for(j=0; j < maxw; j += 2)
+ {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
- tmp=(y-crG-cbG)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *green_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ ++y; ++r; ++g; ++b;
- tmp=(y+cbB)>>16;
- if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
- *blue_o++ = tmp;//*(bufouto++)=(tmp>255)?255:((tmp<0)?0:tmp);
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
+ ++y; ++r; ++g; ++b; ++cb; ++cr;
}
- red_e += width; green_e += width; blue_e += width;
- red_o += width; green_o += width; blue_o += width;
- src_y += width<<1;
}
-}/* yuv420rgb() */
+ opj_free(img->comps[0].data); img->comps[0].data = d0;
+ opj_free(img->comps[1].data); img->comps[1].data = d1;
+ opj_free(img->comps[2].data); img->comps[2].data = d2;
+
+ img->comps[1].w = maxw; img->comps[1].h = maxh;
+ img->comps[2].w = maxw; img->comps[2].h = maxh;
+ img->comps[1].dx = img->comps[0].dx;
+ img->comps[2].dx = img->comps[0].dx;
+ img->comps[1].dy = img->comps[0].dy;
+ img->comps[2].dy = img->comps[0].dy;
-static void opj_convert_yuv422(opj_image_t *img)
+}/* opj_convert_sycc422() */
+
+static void opj_convert_sycc420(opj_image_t *img)
{
- int *y, *cb, *cr, *red, *green, *blue;
- int maxy, maxw, maxh;
+ int *d0, *d1, *d2, *r, *g, *b, *nr, *ng, *nb;
+ const int *y, *cb, *cr, *ny;
+ int maxw, maxh, max, offset, upb;
+ int i, j;
+
+ i = img->comps[0].prec;
+ offset = 1<<(i - 1); upb = (1<<i)-1;
maxw = img->comps[0].w; maxh = img->comps[0].h;
- maxy = maxw * maxh;
+ max = maxw * maxh;
y = img->comps[0].data;
- cb = img->comps[1].data;
+ cb = img->comps[1].data;
cr = img->comps[2].data;
-//YUV422 -> YUV444 -> RGB
- red = (int*)opj_calloc(sizeof(int), maxy);
- green = (int*)opj_calloc(sizeof(int), maxy);
- blue = (int*)opj_calloc(sizeof(int), maxy);
+ d0 = r = (int*)opj_malloc(sizeof(int) * max);
+ d1 = g = (int*)opj_malloc(sizeof(int) * max);
+ d2 = b = (int*)opj_malloc(sizeof(int) * max);
- yuv422rgb(y, cb, cr, red, green, blue, maxw, maxh);
+ for(i=0; i < maxh; i += 2)
+ {
+ ny = y + maxw;
+ nr = r + maxw; ng = g + maxw; nb = b + maxw;
- opj_free(img->comps[0].data); img->comps[0].data = red;
- opj_free(img->comps[1].data); img->comps[1].data = green;
- opj_free(img->comps[2].data); img->comps[2].data = blue;
+ for(j=0; j < maxw; j += 2)
+ {
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
- img->comps[1].w = maxw; img->comps[2].h = maxh;
- img->comps[1].dx = img->comps[0].dx;
- img->comps[2].dx = img->comps[0].dx;
- img->comps[1].dy = img->comps[0].dy;
- img->comps[2].dy = img->comps[0].dy;
+ ++y; ++r; ++g; ++b;
- img->comps[0].prec = 8; img->comps[1].prec = 8; img->comps[2].prec = 8;
-}
+ sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
-static void opj_convert_yuv420(opj_image_t *img)
-{
- int *y, *cb, *cr, *red, *green, *blue;
- int maxy, maxw, maxh;
+ ++y; ++r; ++g; ++b;
- maxw = img->comps[0].w; maxh = img->comps[0].h;
- maxy = maxw * maxh;
+ sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
- y = img->comps[0].data;
- cb = img->comps[1].data;
- cr = img->comps[2].data;
+ ++ny; ++nr; ++ng; ++nb;
-//YUV420 -> YUV422 -> YUV444 -> RGB
- red = (int*)opj_calloc(sizeof(int), maxy);
- green = (int*)opj_calloc(sizeof(int), maxy);
- blue = (int*)opj_calloc(sizeof(int), maxy);
+ sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
- yuv420rgb(y, cb, cr, red, green, blue, maxw, maxh);
-
- opj_free(img->comps[0].data); img->comps[0].data = red;
- opj_free(img->comps[1].data); img->comps[1].data = green;
- opj_free(img->comps[2].data); img->comps[2].data = blue;
+ ++ny; ++nr; ++ng; ++nb; ++cb; ++cr;
+ }
+ y += maxw; r += maxw; g += maxw; b += maxw;
+ }
+ opj_free(img->comps[0].data); img->comps[0].data = d0;
+ opj_free(img->comps[1].data); img->comps[1].data = d1;
+ opj_free(img->comps[2].data); img->comps[2].data = d2;
- img->comps[1].w = maxw; img->comps[2].h = maxh;
- img->comps[1].dx = img->comps[0].dx;
- img->comps[2].dx = img->comps[0].dx;
- img->comps[1].dy = img->comps[0].dy;
- img->comps[2].dy = img->comps[0].dy;
+ img->comps[1].w = maxw; img->comps[1].h = maxh;
+ img->comps[2].w = maxw; img->comps[2].h = maxh;
+ img->comps[1].dx = img->comps[0].dx;
+ img->comps[2].dx = img->comps[0].dx;
+ img->comps[1].dy = img->comps[0].dy;
+ img->comps[2].dy = img->comps[0].dy;
- img->comps[0].prec = 8; img->comps[1].prec = 8; img->comps[2].prec = 8;
-}
+}/* opj_convert_sycc420() */
void opj_convert_sycc_to_rgb(opj_image_t *img)
{
img->color_space = CLRSPC_GRAY;
return;
}
- if((img->comps[0].dx == 1)
- && (img->comps[1].dx == 2)
- && (img->comps[2].dx == 2)
- && (img->comps[0].dy == 1)
- && (img->comps[1].dy == 2)
- && (img->comps[2].dy == 2))// horizontal and vertical
+
+ if((img->comps[0].dx == 1)
+ && (img->comps[1].dx == 2)
+ && (img->comps[2].dx == 2)
+ && (img->comps[0].dy == 1)
+ && (img->comps[1].dy == 2)
+ && (img->comps[2].dy == 2))/* horizontal and vertical sub-sample */
{
- opj_convert_yuv420(img);
+ opj_convert_sycc420(img);
}
- else
- if((img->comps[0].dx == 1)
- && (img->comps[1].dx == 2)
- && (img->comps[2].dx == 2)
- && (img->comps[0].dy == 1)
- && (img->comps[1].dy == 1)
- && (img->comps[2].dy == 1))// horizontal only
+ else
+ if((img->comps[0].dx == 1)
+ && (img->comps[1].dx == 2)
+ && (img->comps[2].dx == 2)
+ && (img->comps[0].dy == 1)
+ && (img->comps[1].dy == 1)
+ && (img->comps[2].dy == 1))/* horizontal sub-sample only */
{
- opj_convert_yuv422(img);
+ opj_convert_sycc422(img);
}
- else
- if((img->comps[0].dx == 1)
- && (img->comps[1].dx == 1)
- && (img->comps[2].dx == 1)
- && (img->comps[0].dy == 1)
- && (img->comps[1].dy == 1)
- && (img->comps[2].dy == 1))
+ else
+ if((img->comps[0].dx == 1)
+ && (img->comps[1].dx == 1)
+ && (img->comps[2].dx == 1)
+ && (img->comps[0].dy == 1)
+ && (img->comps[1].dy == 1)
+ && (img->comps[2].dy == 1))/* no sub-sample */
{
- opj_convert_yuv444(img);
+ opj_convert_sycc444(img);
}
else
{
-fprintf(stderr,"%s:%d:opj_convert_sycc_to_rgb\n\tCAN NOT CONVERT\n",
-__FILE__,__LINE__);
+ fprintf(stderr,"%s:%d:opj_convert_sycc_to_rgb\n\tCAN NOT CONVERT\n",
+ __FILE__,__LINE__);
return;
}
img->color_space = CLRSPC_SRGB;
+
}/* opj_convert_sycc_to_rgb() */
projects / openjpeg.git / commitdiff