FrameCache.cpp

//
// Created by Cry on 2018-12-20.
//

#include "FrameCache.h"

SDL_bool FrameCache::product_frame() {
 if (consume_render == SDL_FALSE) {
 //上一个帧，还没送显。这里不做处理。直接跳过
 }
 frames_swap();
 SDL_bool previous_frame_consumed = consume_render;
 consume_render = SDL_FALSE;
 return previous_frame_consumed;
}


void FrameCache::frames_swap() {
 AVFrame *temp = decode_frame;
 render_frame = temp;
 decode_frame = render_frame;
}

SDL_bool FrameCache::init() {
 decode_frame = av_frame_alloc();

 render_frame = av_frame_alloc();

 consume_render = SDL_TRUE;

 return SDL_TRUE;
}