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composite.cpp
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composite.cpp
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#include <stdio.h>
#include <stdlib.h>
typedef unsigned char u8;
typedef unsigned int u32;
u8 video_frame[720][1280][3];
u8 background_quote_frame[720][1280][3];
u8 background_blank_frame[720][1280][3];
u8 background_black_boxes_frame[720][1280][3];
u8 background_fadeout_frame[720][1280][3];
u8 background_about_frame[720][1280][3];
bool place(FILE * in, u32 width, u32 height, u32 x_left, u32 y_top) {
const int num_bytes = width * height * 3;
u8 input_buffer[num_bytes];
if (fseek(in, -num_bytes, SEEK_END)) {
printf("FSEEK FAIL!!!!!\n");
return false;
}
if(fread(input_buffer, 1, num_bytes, in) == num_bytes) {
for(u32 y=0; y<height; y++) {
for(u32 x=0; x<width; x++) {
video_frame[y + y_top][x + x_left][0] = input_buffer[(y*width + x) * 3];
video_frame[y + y_top][x + x_left][1] = input_buffer[(y*width + x) * 3 + 1];
video_frame[y + y_top][x + x_left][2] = input_buffer[(y*width + x) * 3 + 2];
}
}
} else {
printf("FREAD FAIL!!!!!\n");
return false;
}
return true;
}
void dump_file(const char * filename) {
FILE * out = fopen(filename, "wb");
fprintf(out, "P6 1280 720 255\n");
for (int y=0; y<720; y++) {
for (int x=0; x<1280; x++) {
fputc(video_frame[y][x][0], out);
fputc(video_frame[y][x][1], out);
fputc(video_frame[y][x][2], out);
}
}
fclose(out);
}
void fade_black(u8 background[720][1280][3], u32 frame_start, u32 frame_count, int direction) {
float t;
char filename[256];
for(u32 frame=0; frame<frame_count; frame++) {
t = (float)frame/frame_count;
if (direction == -1)
t = 1.0-t;
for(int y=0; y<720; y++) {
for(int x=0; x<1280; x++) {
video_frame[y][x][0] = (u8)(t*background[y][x][0]);
video_frame[y][x][1] = (u8)(t*background[y][x][1]);
video_frame[y][x][2] = (u8)(t*background[y][x][2]);
}
}
sprintf(filename, "final_video/video_frame_%05d.ppm%c", frame_start+frame, '\0');
printf("fade_black %s\n", filename);
dump_file(filename);
}
}
void fade_to(u8 background_to[720][1280][3], u8 background_from[720][1280][3], u32 frame_start, u32 frame_count) {
float t;
char filename[256];
for(u32 frame=0; frame<frame_count; frame++) {
t = (float)frame/frame_count;
for(int y=0; y<720; y++) {
for(int x=0; x<1280; x++) {
video_frame[y][x][0] = (u8)(t*background_from[y][x][0] + (1-t)*background_to[y][x][0]);
video_frame[y][x][1] = (u8)(t*background_from[y][x][1] + (1-t)*background_to[y][x][1]);
video_frame[y][x][2] = (u8)(t*background_from[y][x][2] + (1-t)*background_to[y][x][2]);
}
}
sprintf(filename, "final_video/video_frame_%05d.ppm%c", frame_start+frame, '\0');
printf("fade_to %s\n", filename);
dump_file(filename);
}
}
int main(int argc, char * argv[]) {
FILE * in;
char filename[256];
bool done = false;
in = fopen("background_quote.pbm", "rb");
fseek(in, -720*1280*3, SEEK_END);
fread(background_quote_frame, 1, 720*1280*3, in);
fclose(in);
in = fopen("background_blank.pbm", "rb");
fseek(in, -720*1280*3, SEEK_END);
fread(background_blank_frame, 1, 720*1280*3, in);
fclose(in);
in = fopen("background_black_boxes.pbm", "rb");
fseek(in, -720*1280*3, SEEK_END);
fread(background_black_boxes_frame, 1, 720*1280*3, in);
fclose(in);
in = fopen("background_fadeout.pbm", "rb");
fseek(in, -720*1280*3, SEEK_END);
fread(background_fadeout_frame, 1, 720*1280*3, in);
fclose(in);
in = fopen("background_about.pbm", "rb");
fseek(in, -720*1280*3, SEEK_END);
fread(background_about_frame, 1, 720*1280*3, in);
fclose(in);
fade_black(background_quote_frame, 0, 30, 1);
u32 frame_id;
for(frame_id=0; frame_id<900; frame_id++) {
if(frame_id == 0) {
fade_black(background_quote_frame, frame_id, 30, 1);
frame_id += 30;
}
if(frame_id == 420) {
fade_to(background_quote_frame, background_blank_frame, frame_id, 30);
frame_id += 30;
}
if(frame_id == 450) {
fade_to(background_blank_frame, background_about_frame, frame_id, 30);
frame_id += 30;
}
if(frame_id == 840) {
fade_to(background_about_frame, background_blank_frame, frame_id, 30);
frame_id += 30;
}
if(frame_id == 870) {
fade_to(background_blank_frame, background_black_boxes_frame, frame_id, 30);
frame_id += 30;
}
if (frame_id<900) {
sprintf(filename, "final_video/video_frame_%05d.ppm%c", frame_id, '\0');
printf("intro %s\n", filename);
dump_file(filename);
}
}
frame_id = 0;
while(true) {
done = true;
sprintf(filename, "final_video/video_frame_%05d.ppm%c", frame_id+900, '\0');
printf("%s\n", filename);
sprintf(filename, "video_frames/0_%05d.ppm%c", frame_id, '\0');
in = fopen(filename, "rb");
printf(" %s", filename);
if (in) {
if(place(in, 540, 540, 67, 173)) {
printf(" okay\n");
done = false;
} else {
printf(" broken\n");
}
} else {
printf(" missing\n");
}
fclose(in);
sprintf(filename, "video_frames/1_%05d.ppm%c", frame_id, '\0');
in = fopen(filename, "rb");
printf(" %s", filename);
if (in) {
if(place(in, 540, 540, 673, 173)) {
printf(" okay\n");
} else {
printf(" broken\n");
}
} else {
printf(" missing\n");
}
fclose(in);
sprintf(filename, "waveforms/0_%05d.ppm%c", frame_id, '\0');
in = fopen(filename, "rb");
printf(" %s", filename);
if (in) {
if(place(in, 610, 160, 20, 6)) {
printf(" okay\n");
done = false;
} else {
printf(" broken\n");
}
} else {
printf(" missing\n");
}
fclose(in);
sprintf(filename, "waveforms/1_%05d.ppm%c", frame_id, '\0');
in = fopen(filename, "rb");
printf(" %s", filename);
if (in) {
if(place(in, 610, 160, 650, 6)) {
printf(" okay\n");
done = false;
} else {
printf(" broken\n");
}
} else {
printf(" missing\n");
}
fclose(in);
if (done)
break;
sprintf(filename, "final_video/video_frame_%05d.ppm%c", frame_id+900, '\0');
dump_file(filename);
frame_id++;
}
fade_black(background_fadeout_frame, frame_id+900, 90, -1);
}