moonlight-qt/app/streaming/video/ffmpeg-renderers/sdl.cpp
2018-08-15 20:41:19 -07:00

87 lines
2.3 KiB
C++

#include "renderer.h"
#include <Limelight.h>
SdlRenderer::SdlRenderer()
: m_Renderer(nullptr),
m_Texture(nullptr)
{
}
SdlRenderer::~SdlRenderer()
{
if (m_Texture != nullptr) {
SDL_DestroyTexture(m_Texture);
}
if (m_Renderer != nullptr) {
SDL_DestroyRenderer(m_Renderer);
}
}
bool SdlRenderer::prepareDecoderContext(AVCodecContext*)
{
/* Nothing to do */
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Using SDL software renderer");
return true;
}
bool SdlRenderer::initialize(SDL_Window* window,
int,
int width,
int height,
int)
{
m_Renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
if (!m_Renderer) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_CreateRenderer() failed: %s",
SDL_GetError());
return false;
}
// The window may be smaller than the stream size, so ensure our
// logical rendering surface size is equal to the stream size
SDL_RenderSetLogicalSize(m_Renderer, width, height);
// Draw a black frame until the video stream starts rendering
SDL_SetRenderDrawColor(m_Renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
SDL_RenderClear(m_Renderer);
SDL_RenderPresent(m_Renderer);
m_Texture = SDL_CreateTexture(m_Renderer,
SDL_PIXELFORMAT_YV12,
SDL_TEXTUREACCESS_STREAMING,
width,
height);
if (!m_Texture) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_CreateRenderer() failed: %s",
SDL_GetError());
return false;
}
return true;
}
void SdlRenderer::renderFrame(AVFrame* frame)
{
SDL_UpdateYUVTexture(m_Texture, nullptr,
frame->data[0],
frame->linesize[0],
frame->data[1],
frame->linesize[1],
frame->data[2],
frame->linesize[2]);
// Done with the frame now
av_frame_free(&frame);
SDL_RenderClear(m_Renderer);
SDL_RenderCopy(m_Renderer, m_Texture, nullptr, nullptr);
SDL_RenderPresent(m_Renderer);
}