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improved horizontal sync falling edge detection

master
Ahmet Inan 2012-08-16 21:37:17 +02:00
rodzic 63d30a73ac
commit 614fccad24
2 zmienionych plików z 9 dodań i 13 usunięć
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14
debug.c
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@ -190,7 +190,7 @@ int main(int argc, char **argv)
// we want a pulse at the falling edge
latch_sync = begin_hor_sync > (int)(drate * sync_tolerance * hor_sync_len) ? 1 : latch_sync;
int hor_sync = begin_hor_sync > (int)(drate * sync_tolerance * hor_sync_len) ? 0 : latch_sync;
int hor_sync = (cnt_freq > 1299.0) && latch_sync;
latch_sync = hor_sync ? 0 : latch_sync;
// we only want a pulse for the bits
@ -395,13 +395,11 @@ int main(int argc, char **argv)
evn_count = 0;
odd_count = 0;
}
// TODO: need better way to compensate for pulse decay time
float fixme = 0.0007;
if (hor_ticks == (int)((fixme + sync_porch_len) * drate) ||
hor_ticks == (int)((fixme + sync_porch_len + y_len) * drate) ||
hor_ticks == (int)((fixme + sync_porch_len + y_len + seperator_len) * drate) ||
hor_ticks == (int)((fixme + sync_porch_len + y_len + seperator_len + porch_len) * drate) ||
hor_ticks == (int)((fixme + sync_porch_len + y_len + seperator_len + porch_len + uv_len) * drate)) {
if (hor_ticks == (int)(sync_porch_len * drate) ||
hor_ticks == (int)((sync_porch_len + y_len) * drate) ||
hor_ticks == (int)((sync_porch_len + y_len + seperator_len) * drate) ||
hor_ticks == (int)((sync_porch_len + y_len + seperator_len + porch_len) * drate) ||
hor_ticks == (int)((sync_porch_len + y_len + seperator_len + porch_len + uv_len) * drate)) {
uint8_t *p = img->pixel + 3 * y * width + 3 * hor_ticks;
p[0] = 255;
p[1] = 0;

8
decode.c
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@ -192,7 +192,7 @@ int decode(int *reset, struct img **img, char *img_name, float cnt_freq, float d
// we want a pulse at the falling edge
latch_sync = hor_ticks > (int)(drate * sync_tolerance * hor_sync_len) ? 1 : latch_sync;
int hor_sync = hor_ticks > (int)(drate * sync_tolerance * hor_sync_len) ? 0 : latch_sync;
int hor_sync = (cnt_freq > 1299.0) && latch_sync;
latch_sync = hor_sync ? 0 : latch_sync;
// we wait until first sync
@ -272,12 +272,10 @@ int decode(int *reset, struct img **img, char *img_name, float cnt_freq, float d
odd = sep_count < 0;
sep_count = 0;
}
// TODO: need better way to compensate for pulse decay time
float fixme = 0.0007;
if (y_pixel_x < y_width && ticks >= (int)((fixme + sync_porch_len) * drate))
if (y_pixel_x < y_width && ticks >= (int)(sync_porch_len * drate))
y_pixel[y_pixel_x++ + (y % 2) * y_width] = fclampf(255.0 * (dat_freq - 1500.0) / 800.0, 0.0, 255.0);
if (uv_pixel_x < uv_width && ticks >= (int)((fixme + sync_porch_len + y_len + seperator_len + porch_len) * drate))
if (uv_pixel_x < uv_width && ticks >= (int)((sync_porch_len + y_len + seperator_len + porch_len) * drate))
uv_pixel[uv_pixel_x++ + odd * uv_width] = fclampf(255.0 * (dat_freq - 1500.0) / 800.0, 0.0, 255.0);
return 0;
}