scrcpy/app/src/video_buffer.h

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#ifndef VIDEO_BUFFER_H
#define VIDEO_BUFFER_H
#include <stdbool.h>
#include <SDL2/SDL_mutex.h>
#include "config.h"
#include "fps_counter.h"
// forward declarations
typedef struct AVFrame AVFrame;
struct video_buffer {
AVFrame *decoding_frame;
AVFrame *rendering_frame;
SDL_mutex *mutex;
#ifndef SKIP_FRAMES
bool interrupted;
SDL_cond *rendering_frame_consumed_cond;
#endif
bool rendering_frame_consumed;
struct fps_counter fps_counter;
};
bool
video_buffer_init(struct video_buffer *vb);
void
video_buffer_destroy(struct video_buffer *vb);
// set the decoded frame as ready for rendering
// this function locks frames->mutex during its execution
// the output flag is set to report whether the previous frame has been skipped
void
video_buffer_offer_decoded_frame(struct video_buffer *vb,
bool *previous_frame_skipped);
// mark the rendering frame as consumed and return it
// MUST be called with frames->mutex locked!!!
// the caller is expected to render the returned frame to some texture before
// unlocking frames->mutex
const AVFrame *
video_buffer_consume_rendered_frame(struct video_buffer *vb);
// wake up and avoid any blocking call
void
video_buffer_interrupt(struct video_buffer *vb);
#endif