public:
YuvPlayer(int width, int height, const string& title = "YUV Player");
void play(string fname, int fps = -1);
+ void drawGrid();
~YuvPlayer();
private:
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *texture;
- long frameCnt = 0;
+ unsigned int frameCnt = 0;
string title;
+ ifstream::pos_type last_pos;
+};
+
+
+class ImageOperation {
+public:
+ ImageOperation(uint8_t *r, int width, int height);
+
+
+private:
+ int width;
+ int height;
+ uint8_t *raw;
};
YuvPlayer::YuvPlayer(int w, int h, const string& t)
if (!in.is_open()) {
cout << "failed to open " << file << endl;
}
- cout << "fps " << fps << endl;
+
SDL_Event event;
bool quit = false;
quit = true;
break;
case SDLK_RIGHT:
- cout << "Right click" << endl;
if(readFrame(in, raw, frame_size)){
updateRenderer(raw);
}
break;
+ case SDLK_LEFT:
+ frameCnt = frameCnt >= 2 ? frameCnt - 2 : 0;
+ in.seekg(frameCnt * frame_size);
+ if(readFrame(in, raw, frame_size)){
+ updateRenderer(raw);
+ }
+
+ break;
case SDLK_p:
isPlaying = !isPlaying;
break;
+ case SDLK_g:
+ drawGrid();
+ break;
default:
break;
}
free(raw);
}
+void YuvPlayer::drawGrid()
+{
+// cout << "drawGrid" << endl;
+// SDL_RenderClear(renderer);
+// SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
+//
+// if(SDL_RenderDrawLine(renderer, 10, 10, 200, 200) == -1){
+// cout << "draw line error" << endl;
+// }
+// SDL_RenderCopy(renderer, texture, nullptr, nullptr);
+// SDL_RenderPresent(renderer);
+
+// SDL_UpdateTexture(texture, nullptr, raw, width * SDL_BYTESPERPIXEL(SDL_PIXELFORMAT_IYUV));
+ SDL_RenderClear(renderer);
+ SDL_RenderCopy(renderer, texture, nullptr, nullptr);
+ SDL_RenderPresent(renderer);
+}
+
+
bool YuvPlayer::readFrame(ifstream& in, uint8_t *raw, size_t size)
{
+ last_pos = in.tellg();
bool ret = (bool) in.read(reinterpret_cast<char *>(raw), size);
if (ret){
frameCnt++;
stringstream ss;
ss << this->title << " [" << setw(4) << to_string(frameCnt) << "]";
- cout << "read frame " << frameCnt << endl;
SDL_SetWindowTitle(window, ss.str().c_str());
+ }else {
+ cout << "read error" << endl;
}
return ret;
}
void YuvPlayer::updateRenderer(uint8_t *raw)
{
+ if (frameCnt == 10){
+ memset(raw, 0x00, 1280 * 720);
+ }
SDL_UpdateTexture(texture, nullptr, raw, width * SDL_BYTESPERPIXEL(SDL_PIXELFORMAT_IYUV));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, texture, nullptr, nullptr);
{
string fname = "out.yuv";
YuvPlayer player(1280, 720);
- player.play(fname, 25);
+ //player.play(fname, 25);
+ player.play(fname);
}