629c296207
Expose frames_offer_decoded_frame() and frames_consume_rendered_frame() so that callers are not exposed to frame swapping (between the decoding and rendering frames) details.
37 lines
979 B
C
37 lines
979 B
C
#ifndef FRAMES_H
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#define FRAMES_H
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#include <SDL2/SDL_mutex.h>
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#include <SDL2/SDL_stdinc.h>
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#include "config.h"
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// forward declarations
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typedef struct AVFrame AVFrame;
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struct frames {
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AVFrame *decoding_frame;
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AVFrame *rendering_frame;
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SDL_mutex *mutex;
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#ifndef SKIP_FRAMES
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SDL_cond *rendering_frame_consumed_cond;
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#endif
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SDL_bool rendering_frame_consumed;
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};
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SDL_bool frames_init(struct frames *frames);
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void frames_destroy(struct frames *frames);
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// set the decoder frame as ready for rendering
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// this function locks frames->mutex during its execution
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// returns true if the previous frame had been consumed
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SDL_bool frames_offer_decoded_frame(struct frames *frames);
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// mark the rendering frame as consumed and return it
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// MUST be called with frames->mutex locked!!!
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// the caller is expected to render the returned frame to some texture before
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// unlocking frames->mutex
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const AVFrame *frames_consume_rendered_frame(struct frames *frames);
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#endif
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