buffering_thread

app/src/video_buffer.h

@@ -6,13 +6,33 @@
 #include <stdbool.h>
 
 #include "frame_buffer.h"
+#include "util/queue.h"
+#include "util/thread.h"
 
 // forward declarations
 typedef struct AVFrame AVFrame;
 
+struct sc_video_buffer_frame {
+    AVFrame *frame;
+    struct sc_video_buffer_frame *next;
+};
+
+struct sc_video_buffer_frame_queue SC_QUEUE(struct sc_video_buffer_frame);
+
 struct sc_video_buffer {
     struct sc_frame_buffer fb;
 
+    unsigned buffering_ms;
+
+    // only if buffering_ms > 0
+    struct {
+        sc_thread thread;
+        sc_mutex mutex;
+        sc_cond queue_cond;
+        struct sc_video_buffer_frame_queue queue;
+        bool stopped;
+    } b; // buffering
+
     const struct sc_video_buffer_callbacks *cbs;
     void *cbs_userdata;
 };
@@ -23,10 +43,19 @@ struct sc_video_buffer_callbacks {
 };
 
 bool
-sc_video_buffer_init(struct sc_video_buffer *vb,
+sc_video_buffer_init(struct sc_video_buffer *vb, unsigned buffering_ms,
                      const struct sc_video_buffer_callbacks *cbs,
                      void *cbs_userdata);
 
+bool
+sc_video_buffer_start(struct sc_video_buffer *vb);
+
+void
+sc_video_buffer_stop(struct sc_video_buffer *vb);
+
+void
+sc_video_buffer_join(struct sc_video_buffer *vb);
+
 void
 sc_video_buffer_destroy(struct sc_video_buffer *vb);