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Extract sc_delay_buffer

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A video buffer had 2 responsibilities:
 - handle the frame delaying mechanism (queuing packets and pushing them
   after the expected delay);
 - keep only the most recent frame (using a sc_frame_buffer).

In order to reuse only the frame delaying mechanism, extract it to a
separate component, sc_delay_buffer.
This commit is contained in:
Romain Vimont
2023-03-02 00:31:43 +01:00
parent 4ebde4b4d1
commit 57192b4a2f
5 changed files with 337 additions and 229 deletions
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34
app/src/video_buffer.h
View File

@@ -5,41 +5,13 @@
#include <stdbool.h>
#include "clock.h"
#include "delay_buffer.h"
#include "frame_buffer.h"
#include "util/thread.h"
#include "util/tick.h"
#include "util/vecdeque.h"
// forward declarations
typedef struct AVFrame AVFrame;
struct sc_video_buffer_frame {
AVFrame *frame;
#ifndef NDEBUG
sc_tick push_date;
#endif
};
struct sc_video_buffer_frame_queue SC_VECDEQUE(struct sc_video_buffer_frame);
struct sc_video_buffer {
struct sc_delay_buffer db;
struct sc_frame_buffer fb;
sc_tick buffering_time;
// only if buffering_time > 0
struct {
sc_thread thread;
sc_mutex mutex;
sc_cond queue_cond;
sc_cond wait_cond;
struct sc_clock clock;
struct sc_video_buffer_frame_queue queue;
bool stopped;
} b; // buffering
const struct sc_video_buffer_callbacks *cbs;
void *cbs_userdata;
};
@@ -50,7 +22,7 @@ struct sc_video_buffer_callbacks {
};
bool
sc_video_buffer_init(struct sc_video_buffer *vb, sc_tick buffering_time,
sc_video_buffer_init(struct sc_video_buffer *vb, sc_tick delay,
const struct sc_video_buffer_callbacks *cbs,
void *cbs_userdata);