scrcpy/app/src/frame_buffer.h

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#ifndef SC_FRAME_BUFFER_H
#define SC_FRAME_BUFFER_H
#include "common.h"
#include <stdbool.h>
#include "util/thread.h"
// forward declarations
typedef struct AVFrame AVFrame;
/**
* A frame buffer holds 1 pending frame, which is the last frame received from
* the producer (typically, the decoder).
*
* If a pending frame has not been consumed when the producer pushes a new
* frame, then it is lost. The intent is to always provide access to the very
* last frame to minimize latency.
*/
struct sc_frame_buffer {
AVFrame *pending_frame;
AVFrame *tmp_frame; // To preserve the pending frame on error
sc_mutex mutex;
bool pending_frame_consumed;
};
bool
sc_frame_buffer_init(struct sc_frame_buffer *fb);
void
sc_frame_buffer_destroy(struct sc_frame_buffer *fb);
bool
sc_frame_buffer_push(struct sc_frame_buffer *fb, const AVFrame *frame,
bool *skipped);
void
sc_frame_buffer_consume(struct sc_frame_buffer *fb, AVFrame *dst);
#endif