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cleaned up

master
Ahmet İnan 2011-10-23 00:52:51 +02:00
rodzic e579163306
commit 8c9e5a5e7f
1 zmienionych plików z 17 dodań i 10 usunięć
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27
decode.c
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@ -19,8 +19,6 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
#include "utils.h"
#include "img.h"
int first_hor_sync = 0;
void process_line(uint8_t *pixel, uint8_t *y_pixel, uint8_t *uv_pixel, int y_width, int uv_width, int width, int height, int n)
{
// we only process after 2 full lines: on odd lines
@ -50,7 +48,7 @@ void process_line(uint8_t *pixel, uint8_t *y_pixel, uint8_t *uv_pixel, int y_wid
}
}
int vis_code(int *code, float cnt_freq, float drate)
int vis_code(int *reset, int *code, float cnt_freq, float drate)
{
const float tolerance = 0.9;
const float length = 0.03;
@ -78,6 +76,11 @@ int vis_code(int *code, float cnt_freq, float drate)
static int bit = -1;
static int byte = 0;
if (*reset) {
bit = -1;
*reset = 0;
}
if (bit < 0) {
if (sig_ss) {
ticks = 0;
@ -153,7 +156,7 @@ int cal_header(float cnt_freq, float dat_freq, float drate)
return 0;
}
int decode(img_t **img, char *img_name, int width, int height, int *missing_sync, int *seperator_correction, float cnt_freq, float dat_freq, float drate)
int decode(int *reset, img_t **img, char *img_name, int width, int height, int *missing_sync, int *seperator_correction, float cnt_freq, float dat_freq, float drate)
{
const float sync_porch_len = 0.003;
const float porch_len = 0.0015; (void)porch_len;
@ -201,7 +204,7 @@ int decode(img_t **img, char *img_name, int width, int height, int *missing_sync
latch_sync = hor_sync ? 0 : latch_sync;
// we wait until first sync
if (first_hor_sync && !hor_sync)
if (*reset && !hor_sync)
return 0;
static int y = 0;
@ -213,8 +216,8 @@ int decode(img_t **img, char *img_name, int width, int height, int *missing_sync
hor_ticks++;
// data comes after first sync
if (first_hor_sync && hor_sync) {
first_hor_sync = 0;
if (*reset && hor_sync) {
*reset = 0;
hor_ticks = 0;
y_pixel_x = 0;
uv_pixel_x = 0;
@ -343,6 +346,8 @@ int main(int argc, char **argv)
int vis_mode = 0;
int dat_mode = 0;
int vis_reset = 0;
int dat_reset = 0;
#if DN && UP
// 320 / 0.088 = 160 / 0.044 = 40000 / 11 = 3636.(36)~ pixels per second for Y, U and V
@ -411,14 +416,15 @@ int main(int argc, char **argv)
if (cal_header(cnt_freq, dat_freq, drate)) {
vis_mode = 1;
vis_reset = 1;
dat_mode = 0;
first_hor_sync = 1;
dat_reset = 1;
fprintf(stderr, "%s got calibration header\n", string_time("%F %T"));
}
if (vis_mode) {
int code = 0;
if (!vis_code(&code, cnt_freq, drate))
if (!vis_code(&vis_reset, &code, cnt_freq, drate))
continue;
if (0x88 != code) {
fprintf(stderr, "%s got unsupported VIS 0x%x, ignoring\n", string_time("%F %T"), code);
@ -427,11 +433,12 @@ int main(int argc, char **argv)
}
fprintf(stderr, "%s got VIS = 0x%x\n", string_time("%F %T"), code);
dat_mode = 1;
dat_reset = 1;
vis_mode = 0;
}
if (dat_mode) {
if (decode(&img, img_name, width, height, &missing_sync, &seperator_correction, cnt_freq, dat_freq, drate))
if (decode(&dat_reset, &img, img_name, width, height, &missing_sync, &seperator_correction, cnt_freq, dat_freq, drate))
dat_mode = 0;
}
}