#include "config.h" #include #include #include "gstcms.h" #define SCALE 256 static void get_taps (double *taps, double x) { taps[3] = x * x * (x - 1); taps[2] = x * (-x * x + x + 1); x = 1 - x; taps[1] = x * (-x * x + x + 1); taps[0] = x * x * (x - 1); } int main (int argc, char *argv[]) { int i; g_print ("/* This file is autogenerated. Do not edit.*/\n"); g_print ("#include \n"); g_print ("gint8 cog_resample_table_4tap[256][4] = {\n"); for (i = 0; i < 256; i++) { double x = i / 256.0; double taps[4]; int t[4]; int sum; get_taps (taps, x); taps[0] *= SCALE; taps[1] *= SCALE; taps[2] *= SCALE; taps[3] *= SCALE; t[0] = floor (taps[0]); t[1] = floor (taps[1]); t[2] = floor (taps[2]); t[3] = floor (taps[3]); sum = t[0] + t[1] + t[2] + t[3]; for (; sum < SCALE; sum++) { int i; double max = 0; int max_i = -1; for (i = 0; i < 4; i++) { if (max_i == -1 || (t[i] < taps[i] && (taps[i] - t[i]) > max)) { max_i = i; max = taps[i] - t[i]; } } t[max_i]++; } sum = t[0] + t[1] + t[2] + t[3]; g_print (" { %d, %d, %d, %d }, /* %d %d */\n", t[0], t[1], t[2], t[3], t[2] + t[0], t[1] + t[3]); #if 0 g_print ("/* %.3f %.3f %.3f %.3f %d */\n", taps[0] - t[0], taps[1] - t[1], taps[2] - t[2], taps[3] - t[3], sum); #endif } g_print ("};\n"); g_print ("\n"); { int cm, bits; for (cm = 0; cm < 2; cm++) { for (bits = 6; bits <= 8; bits += 2) { ColorMatrix matrix; /* * At this point, everything is in YCbCr * All components are in the range [0,255] */ color_matrix_set_identity (&matrix); /* offset required to get input video black to (0.,0.,0.) */ /* we don't do this because the code does it for us */ color_matrix_offset_components (&matrix, -16, -128, -128); color_matrix_scale_components (&matrix, (1 / 219.0), (1 / 224.0), (1 / 224.0)); /* colour matrix, YCbCr -> RGB */ /* Requires Y in [0,1.0], Cb&Cr in [-0.5,0.5] */ if (cm) { color_matrix_YCbCr_to_RGB (&matrix, 0.2126, 0.0722); /* HD */ } else { color_matrix_YCbCr_to_RGB (&matrix, 0.2990, 0.1140); /* SD */ } /* * We are now in RGB space */ /* scale to output range. */ color_matrix_scale_components (&matrix, 255.0, 255.0, 255.0); /* because we're doing 8-bit matrix coefficients */ color_matrix_scale_components (&matrix, 1 << bits, 1 << bits, 1 << bits); g_print ("static const int cog_ycbcr_to_rgb_matrix_%dbit_%s[] = {\n", bits, cm ? "hdtv" : "sdtv"); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[0][0]), (int) rint (matrix.m[0][1]), (int) rint (matrix.m[0][2]), (int) rint (matrix.m[0][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[1][0]), (int) rint (matrix.m[1][1]), (int) rint (matrix.m[1][2]), (int) rint (matrix.m[1][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[2][0]), (int) rint (matrix.m[2][1]), (int) rint (matrix.m[2][2]), (int) rint (matrix.m[2][3])); g_print ("};\n"); } } } { int cm, bits; for (cm = 0; cm < 2; cm++) { for (bits = 8; bits <= 8; bits += 1) { ColorMatrix matrix; color_matrix_set_identity (&matrix); color_matrix_scale_components (&matrix, (1 / 255.0), (1 / 255.0), (1 / 255.0)); /* colour matrix, RGB -> YCbCr */ if (cm) { color_matrix_RGB_to_YCbCr (&matrix, 0.2126, 0.0722); /* HD */ } else { color_matrix_RGB_to_YCbCr (&matrix, 0.2990, 0.1140); /* SD */ } /* * We are now in YCbCr space */ color_matrix_scale_components (&matrix, 219.0, 224.0, 224.0); color_matrix_offset_components (&matrix, 16, 128, 128); /* because we're doing 8-bit matrix coefficients */ color_matrix_scale_components (&matrix, 1 << bits, 1 << bits, 1 << bits); g_print ("static const int cog_rgb_to_ycbcr_matrix_%dbit_%s[] = {\n", bits, cm ? "hdtv" : "sdtv"); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[0][0]), (int) rint (matrix.m[0][1]), (int) rint (matrix.m[0][2]), (int) rint (matrix.m[0][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[1][0]), (int) rint (matrix.m[1][1]), (int) rint (matrix.m[1][2]), (int) rint (matrix.m[1][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[2][0]), (int) rint (matrix.m[2][1]), (int) rint (matrix.m[2][2]), (int) rint (matrix.m[2][3])); g_print ("};\n"); } } } { int cm, bits; for (cm = 0; cm < 2; cm++) { for (bits = 8; bits <= 8; bits += 1) { ColorMatrix matrix; color_matrix_set_identity (&matrix); /* offset required to get input video black to (0.,0.,0.) */ /* we don't do this because the code does it for us */ color_matrix_offset_components (&matrix, -16, -128, -128); color_matrix_scale_components (&matrix, (1 / 219.0), (1 / 224.0), (1 / 224.0)); /* colour matrix, RGB -> YCbCr */ if (cm) { color_matrix_YCbCr_to_RGB (&matrix, 0.2126, 0.0722); /* HD */ color_matrix_RGB_to_YCbCr (&matrix, 0.2990, 0.1140); /* SD */ } else { color_matrix_YCbCr_to_RGB (&matrix, 0.2990, 0.1140); /* SD */ color_matrix_RGB_to_YCbCr (&matrix, 0.2126, 0.0722); /* HD */ } /* * We are now in YCbCr space */ color_matrix_scale_components (&matrix, 219.0, 224.0, 224.0); color_matrix_offset_components (&matrix, 16, 128, 128); /* because we're doing 8-bit matrix coefficients */ color_matrix_scale_components (&matrix, 1 << bits, 1 << bits, 1 << bits); g_print ("static const int cog_ycbcr_%s_to_ycbcr_%s_matrix_%dbit[] = {\n", cm ? "hdtv" : "sdtv", cm ? "sdtv" : "hdtv", bits); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[0][0]), (int) rint (matrix.m[0][1]), (int) rint (matrix.m[0][2]), (int) rint (matrix.m[0][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[1][0]), (int) rint (matrix.m[1][1]), (int) rint (matrix.m[1][2]), (int) rint (matrix.m[1][3])); g_print (" %d, %d, %d, %d,\n", (int) rint (matrix.m[2][0]), (int) rint (matrix.m[2][1]), (int) rint (matrix.m[2][2]), (int) rint (matrix.m[2][3])); g_print ("};\n"); } } } return 0; }