Initial commit

Start a new clean history from here.

app/src/frames.c

@@ -0,0 +1,48 @@
+#include "frames.h"
+
+#include <SDL2/SDL_mutex.h>
+#include <libavutil/avutil.h>
+#include <libavformat/avformat.h>
+
+int frames_init(struct frames *frames) {
+    if (!(frames->decoding_frame = av_frame_alloc())) {
+        goto error_0;
+    }
+
+    if (!(frames->rendering_frame = av_frame_alloc())) {
+        goto error_1;
+    }
+
+    if (!(frames->mutex = SDL_CreateMutex())) {
+        goto error_2;
+    }
+
+    if (!(frames->rendering_frame_consumed_cond = SDL_CreateCond())) {
+        goto error_3;
+    }
+
+    frames->rendering_frame_consumed = SDL_TRUE;
+
+    return 0;
+
+error_3:
+    SDL_DestroyMutex(frames->mutex);
+error_2:
+    av_frame_free(&frames->rendering_frame);
+error_1:
+    av_frame_free(&frames->decoding_frame);
+error_0:
+    return -1;
+}
+
+void frames_destroy(struct frames *frames) {
+    SDL_DestroyMutex(frames->mutex);
+    av_frame_free(&frames->rendering_frame);
+    av_frame_free(&frames->decoding_frame);
+}
+
+void frames_swap(struct frames *frames) {
+    AVFrame *tmp = frames->decoding_frame;
+    frames->decoding_frame = frames->rendering_frame;
+    frames->rendering_frame = tmp;
+}