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made value_blur nicer to use and took care of edges

pull/6/head
Ahmet Inan 2014-12-11 14:17:24 +01:00
rodzic 40eb37a40d
commit e4d0264d95
3 zmienionych plików z 1154 dodań i 31 usunięć
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1132
app/src/main/rs/blur_generated.rsh
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Plik diff jest za duży Load Diff

28
app/src/main/rs/decoder.rs
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@ -68,10 +68,10 @@ static void robot36_decoder()
prev_timeout = hpos >= maximum_length;
if (vpos & 1) {
for (int i = 0; i < bitmap_width; ++i) {
uchar even_y = value_blur(i * (y_end-y_begin) / bitmap_width + y_begin);
uchar v = value_blur(i * (v_end-v_begin) / bitmap_width + v_begin);
uchar odd_y = value_blur(i * (y_end-y_begin) / bitmap_width + prev_hpos + y_begin);
uchar u = value_blur(i * (u_end-u_begin) / bitmap_width + prev_hpos + u_begin);
uchar even_y = value_blur(i, y_begin, y_end);
uchar v = value_blur(i, v_begin, v_end);
uchar odd_y = value_blur(i, prev_hpos + y_begin, prev_hpos + y_end);
uchar u = value_blur(i, prev_hpos + u_begin, prev_hpos + u_end);
pixel_buffer[bitmap_width * (vpos-1) + i] = yuv(even_y, u, v);
pixel_buffer[bitmap_width * vpos + i] = yuv(odd_y, u, v);
}
@ -94,9 +94,9 @@ static void robot36_decoder()
static void yuv_decoder()
{
for (int i = 0; i < bitmap_width; ++i) {
uchar y = value_blur(i * (y_end-y_begin) / bitmap_width + y_begin);
uchar u = value_blur(i * (u_end-u_begin) / bitmap_width + u_begin);
uchar v = value_blur(i * (v_end-v_begin) / bitmap_width + v_begin);
uchar y = value_blur(i, y_begin, y_end);
uchar u = value_blur(i, u_begin, u_end);
uchar v = value_blur(i, v_begin, v_end);
pixel_buffer[bitmap_width * vpos + i] = yuv(y, u, v);
}
if (hpos >= maximum_length)
@ -109,9 +109,9 @@ static void yuv_decoder()
static void rgb_decoder()
{
for (int i = 0; i < bitmap_width; ++i) {
uchar r = value_blur(i * (r_end-r_begin) / bitmap_width + r_begin);
uchar g = value_blur(i * (g_end-g_begin) / bitmap_width + g_begin);
uchar b = value_blur(i * (b_end-b_begin) / bitmap_width + b_begin);
uchar r = value_blur(i, r_begin, r_end);
uchar g = value_blur(i, g_begin, g_end);
uchar b = value_blur(i, b_begin, b_end);
pixel_buffer[bitmap_width * vpos + i] = rgb(r, g, b);
}
if (hpos >= maximum_length)
@ -124,7 +124,7 @@ static void rgb_decoder()
static void raw_decoder()
{
for (int i = 0; i < bitmap_width; ++i) {
uchar value = value_blur(i * hpos / bitmap_width);
uchar value = value_blur(i, 0, hpos);
pixel_buffer[bitmap_width * vpos + i] = rgb(value, value, value);
}
prev_hpos = hpos = 0;
@ -145,9 +145,9 @@ static void scottie_decoder()
return;
}
for (int i = 0; i < bitmap_width; ++i) {
uchar r = value_blur(i * (r_end-r_begin) / bitmap_width + prev_hpos + r_begin);
uchar g = value_blur(i * (g_end-g_begin) / bitmap_width + g_begin);
uchar b = value_blur(i * (b_end-b_begin) / bitmap_width + b_begin);
uchar r = value_blur(i, prev_hpos + r_begin, prev_hpos + r_end);
uchar g = value_blur(i, g_begin, g_end);
uchar b = value_blur(i, b_begin, b_end);
pixel_buffer[bitmap_width * vpos + i] = rgb(r, g, b);
}
for (int i = 0; i < scanline_length; ++i)

25
utils/blur.c
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@ -24,7 +24,24 @@ double gauss(double x, double radius)
}
void emit(int radius)
{
printf("\t\tif (i < %d || (buffer_length - %d) <= i)\n\t\t\treturn 0;\n", radius, radius);
printf("\t\tif ((i-%d) < begin || end <= (i+%d)) {\n", radius, radius);
for (int i = -radius; i < 0; ++i) {
printf("\t\t\tif (begin <= (i%d)) {\n", i);
printf("\t\t\t\tweight_sum += %d;\n",
(int)(16384 * gauss(i, radius)));
printf("\t\t\t\tvalue_sum += %d * value_buffer[i%d];\n",
(int)(16384 * gauss(i, radius)), i);
printf("\t\t\t}\n");
}
for (int i = 0; i <= radius; ++i) {
printf("\t\t\tif ((i+%d) < end) {\n", i);
printf("\t\t\t\tweight_sum += %d;\n",
(int)(16384 * gauss(i, radius)));
printf("\t\t\t\tvalue_sum += %d * value_buffer[i+%d];\n",
(int)(16384 * gauss(i, radius)), i);
printf("\t\t\t}\n");
}
printf("\t\t\treturn value_sum / weight_sum;\n\t\t}\n");
int sum = 0;
for (int i = -radius; i <= radius; ++i)
sum += 16384 * gauss(i, radius);
@ -41,7 +58,11 @@ void emit(int radius)
int main()
{
printf("/* code generated by 'utils/blur.c' */\n");
printf("static uchar value_blur(int i)\n{\n\tswitch (blur_power) {\n");
printf("static uchar value_blur(int pixel, int begin, int end)\n{\n");
printf("\tint i = (pixel * (end - begin) + (end - begin) / 2) / bitmap_width + begin;\n");
printf("\tint weight_sum = 0;\n");
printf("\tint value_sum = 0;\n");
printf("\tswitch (blur_power) {\n");
for (int i = 0; i < 7; ++i) {
printf("\tcase %d:\n", i);
emit((1 << i) | 1);