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did some code reuse, added write support in img, used it in decode and

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This commit is contained in:
Ahmet İnan 2011-10-03 18:28:43 +02:00
parent d947867831
commit d2e809f823
7 changed files with 77 additions and 62 deletions
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48
decode.c
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@ -18,6 +18,7 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
#include "delay.h"
#include "yuv.h"
#include "utils.h"
#include "img.h"
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)
{
@ -52,11 +53,11 @@ int main(int argc, char **argv)
{
pcm_t *pcm;
char *pcm_name = "default";
char *ppm_name = 0;
char *img_name = 0;
if (argc != 1)
pcm_name = argv[1];
if (argc == 3)
ppm_name = argv[2];
img_name = argv[2];
if (!open_pcm_read(&pcm, pcm_name))
return 1;
@ -156,12 +157,7 @@ int main(int argc, char **argv)
const int width = 320;
const int height = 240;
char ppm_head[32];
snprintf(ppm_head, 32, "P6 %d %d 255\n", width, height);
size_t ppm_size = strlen(ppm_head) + width * height * 3;
void *ppm_p = 0;
uint8_t *pixel = 0;
img_t *img;
int hor_ticks = 0;
int y_pixel_x = 0;
@ -298,26 +294,26 @@ int main(int argc, char **argv)
uv_pixel_x = 0;
y = 0;
odd = 0;
if (pixel) {
munmap_file(ppm_p, ppm_size);
if (img) {
close_img(img);
fprintf(stderr, "%d missing sync's and %d corrections from seperator\n", missing_sync, seperator_correction);
missing_sync = 0;
seperator_correction = 0;
}
if (ppm_name)
mmap_file_rw(&ppm_p, ppm_name, ppm_size);
else
mmap_file_rw(&ppm_p, string_time("%F_%T.ppm"), ppm_size);
memcpy(ppm_p, ppm_head, strlen(ppm_head));
pixel = (uint8_t *)ppm_p + strlen(ppm_head);
memset(pixel, 0, width * height * 3);
if (img_name) {
if (!open_img_write(&img, img_name, width, height))
return 1;
} else {
if (!open_img_write(&img, string_time("%F_%T.ppm"), width, height))
return 1;
}
continue;
}
// if horizontal sync is too early, we reset to the beginning instead of ignoring
if (hor_sync && hor_ticks < (int)((hor_len - sync_porch_len) * drate)) {
for (int i = 0; i < 4; i++) {
uint8_t *p = pixel + 3 * y * width + 3 * (width - i - 10);
uint8_t *p = img->pixel + 3 * y * width + 3 * (width - i - 10);
p[0] = 255;
p[1] = 0;
p[2] = 255;
@ -330,11 +326,11 @@ int main(int argc, char **argv)
// we always sync if sync pulse is where it should be.
if (hor_sync && (hor_ticks >= (int)((hor_len - sync_porch_len) * drate) &&
hor_ticks < (int)((hor_len + sync_porch_len) * drate))) {
process_line(pixel, y_pixel, uv_pixel, y_width, uv_width, width, height, y++);
process_line(img->pixel, y_pixel, uv_pixel, y_width, uv_width, width, height, y++);
if (y == height) {
munmap_file(ppm_p, ppm_size);
close_img(img);
fprintf(stderr, "%d missing sync's and %d corrections from seperator\n", missing_sync, seperator_correction);
pixel = 0;
img = 0;
dat_mode = 0;
missing_sync = 0;
seperator_correction = 0;
@ -348,11 +344,11 @@ int main(int argc, char **argv)
// if horizontal sync is missing, we extrapolate from last sync
if (hor_ticks >= (int)((hor_len + sync_porch_len) * drate)) {
process_line(pixel, y_pixel, uv_pixel, y_width, uv_width, width, height, y++);
process_line(img->pixel, y_pixel, uv_pixel, y_width, uv_width, width, height, y++);
if (y == height) {
munmap_file(ppm_p, ppm_size);
close_img(img);
fprintf(stderr, "%d missing sync's and %d corrections from seperator\n", missing_sync, seperator_correction);
pixel = 0;
img = 0;
dat_mode = 0;
missing_sync = 0;
seperator_correction = 0;
@ -394,8 +390,8 @@ int main(int argc, char **argv)
uv_pixel[uv_pixel_x++ + odd * uv_width] = fclampf(255.0 * (dat_freq - 1500.0) / 800.0, 0.0, 255.0);
}
if (pixel) {
munmap_file(ppm_p, ppm_size);
if (img) {
close_img(img);
fprintf(stderr, "%d missing sync's and %d corrections from seperator\n", missing_sync, seperator_correction);
missing_sync = 0;
seperator_correction = 0;