2017-10-09 22:11:01 +08:00
|
|
|
|
/*
|
2017-09-27 16:20:30 +08:00
|
|
|
|
* MIT License
|
2017-05-08 18:03:43 +08:00
|
|
|
|
*
|
2017-09-27 16:20:30 +08:00
|
|
|
|
* Copyright (c) 2016 xiongziliang <771730766@qq.com>
|
|
|
|
|
|
*
|
|
|
|
|
|
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
|
|
|
|
|
|
*
|
|
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
|
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
|
|
|
|
* in the Software without restriction, including without limitation the rights
|
|
|
|
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
|
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
|
|
|
|
* furnished to do so, subject to the following conditions:
|
|
|
|
|
|
*
|
|
|
|
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
|
|
|
|
* copies or substantial portions of the Software.
|
|
|
|
|
|
*
|
|
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
|
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
|
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
|
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
|
|
|
|
* SOFTWARE.
|
2017-05-08 18:03:43 +08:00
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef YUVDISPLAYER_H_
|
|
|
|
|
|
#define YUVDISPLAYER_H_
|
|
|
|
|
|
#include <stdexcept>
|
|
|
|
|
|
#include "Util/onceToken.h"
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
|
|
extern "C" {
|
|
|
|
|
|
#endif
|
|
|
|
|
|
#include <SDL/SDL.h>
|
|
|
|
|
|
#include <libavcodec/avcodec.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
namespace ZL {
|
|
|
|
|
|
namespace Screen {
|
|
|
|
|
|
|
|
|
|
|
|
class YuvDisplayer {
|
|
|
|
|
|
public:
|
|
|
|
|
|
YuvDisplayer(){
|
|
|
|
|
|
static onceToken token([]() {
|
|
|
|
|
|
if(SDL_Init(SDL_INIT_EVERYTHING) == -1) {
|
|
|
|
|
|
throw std::runtime_error("初始化SDL失败");
|
|
|
|
|
|
}
|
|
|
|
|
|
}, []() {
|
|
|
|
|
|
SDL_Quit();
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
virtual ~YuvDisplayer(){
|
|
|
|
|
|
if(m_pOverlay){
|
|
|
|
|
|
SDL_FreeYUVOverlay(m_pOverlay);
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
bool displayYUV(AVFrame *pFrame){
|
|
|
|
|
|
if (!m_pScreen) {
|
|
|
|
|
|
/* Set up the screen */
|
|
|
|
|
|
m_pScreen = SDL_SetVideoMode(1366, 768, 16, SDL_SWSURFACE);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!m_pOverlay && m_pScreen) {
|
|
|
|
|
|
/* Create a YUV overlay */
|
|
|
|
|
|
m_pOverlay = SDL_CreateYUVOverlay(pFrame->width, pFrame->height, SDL_YV12_OVERLAY, m_pScreen);
|
|
|
|
|
|
/* Set the window caption */
|
|
|
|
|
|
SDL_WM_SetCaption("YUV Window", NULL);
|
|
|
|
|
|
}
|
|
|
|
|
|
if (m_pOverlay) {
|
|
|
|
|
|
/* Apply the image to the screen */
|
|
|
|
|
|
m_pOverlay->pixels[0] = pFrame->data[0];
|
|
|
|
|
|
m_pOverlay->pixels[2] = pFrame->data[1];
|
|
|
|
|
|
m_pOverlay->pixels[1] = pFrame->data[2];
|
|
|
|
|
|
|
|
|
|
|
|
m_pOverlay->pitches[0] = pFrame->linesize[0];
|
|
|
|
|
|
m_pOverlay->pitches[2] = pFrame->linesize[1];
|
|
|
|
|
|
m_pOverlay->pitches[1] = pFrame->linesize[2];
|
|
|
|
|
|
|
|
|
|
|
|
/* Update the screen */
|
|
|
|
|
|
SDL_Rect rect = { 0 ,0 ,1366,768};
|
|
|
|
|
|
SDL_LockYUVOverlay(m_pOverlay);
|
|
|
|
|
|
SDL_DisplayYUVOverlay(m_pOverlay, &rect);
|
|
|
|
|
|
SDL_UnlockYUVOverlay(m_pOverlay);
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
private:
|
|
|
|
|
|
SDL_Surface* m_pScreen = nullptr;
|
|
|
|
|
|
SDL_Overlay* m_pOverlay = nullptr;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
} /* namespace Screen */
|
|
|
|
|
|
} /* namespace ZL */
|
|
|
|
|
|
|
|
|
|
|
|
#endif /* YUVDISPLAYER_H_ */
|
