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openjpeg/libopenjpeg/opj_convert.c

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Added files to let people build openjpeg with configure tools ; Added makefiles to let people manually build openjpeg on *nix platforms ; Removed obsolete Makefiles ; Renamed dirent.h to windirent.h ; Made optional the PNG, TIFF, and LCMS support in CMake files ; Added opj_config* files to configure openjpeg before building it (opj_config.h generated by configure, cmake, or manually by the user) ; Renamed this file from ChangeLog to CHANGES ; Renamed License.txt to LICENSE ; Updated README files ; Added INSTALL and LICENSE files ; Added man pages
2010-10-05 12:33:15 +02:00
#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;
tmp=(y+crR)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*red++ = tmp;
tmp=(y-crG-cbG)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*green++ = tmp;
tmp=(y+cbB)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*blue = tmp;
y=(src_y[j+1]-16)*Ky;
tmp=(y+crR)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*red++ = tmp;
tmp=(y-crG-cbG)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*green++ = tmp;
tmp=(y+cbB)>>16;
if(tmp < 0) tmp = 0; else if(tmp > 255) tmp = 255;
*blue++ = tmp;
}
src_y += width;
}
}/* yuv422rgb() */
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)
{
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;
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);
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);
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=(src_y[j+1]-16)*Ky;
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);
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);
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=(src_y[j+yskip]-16)*Ky;
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);
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);
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=(src_y[j+1+yskip]-16)*Ky;
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);
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);
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);
}
red_e += width; green_e += width; blue_e += width;
red_o += width; green_o += width; blue_o += width;
src_y += width<<1;
}
}/* yuv420rgb() */
static void opj_convert_yuv422(opj_image_t *img)
{
int *y, *cb, *cr, *red, *green, *blue;
int maxy, maxw, maxh;
maxw = img->comps[0].w; maxh = img->comps[0].h;
maxy = maxw * maxh;
y = img->comps[0].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);
yuv422rgb(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;
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[0].prec = 8; img->comps[1].prec = 8; img->comps[2].prec = 8;
}
static void opj_convert_yuv420(opj_image_t *img)
{
int *y, *cb, *cr, *red, *green, *blue;
int maxy, maxw, maxh;
maxw = img->comps[0].w; maxh = img->comps[0].h;
maxy = maxw * maxh;
y = img->comps[0].data;
cb = img->comps[1].data;
cr = img->comps[2].data;
//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);
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;
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[0].prec = 8; img->comps[1].prec = 8; img->comps[2].prec = 8;
}
void opj_convert_sycc_to_rgb(opj_image_t *img)
{
if(img->numcomps < 3)
{
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
{
opj_convert_yuv420(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
{
opj_convert_yuv422(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))
{
opj_convert_yuv444(img);
}
else
{
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() */