DXVA2 Hardware Decoding (#3)

2026-04-17 22:00:05 +00:00 · 2018-07-13 02:28:10 -07:00
parent 86f843464c
commit 1cae5f83e5
8 changed files with 810 additions and 87 deletions
--- a/app/streaming/renderers/sdl.cpp
+++ b/app/streaming/renderers/sdl.cpp
@@ -0,0 +1,67 @@
+#include "streaming/session.hpp"
+
+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 */
+    return true;
+}
+
+bool SdlRenderer::initialize(SDL_Window* window,
+                             int,
+                             int width,
+                             int height)
+{
+    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;
+    }
+
+    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]);
+    SDL_RenderClear(m_Renderer);
+    SDL_RenderCopy(m_Renderer, m_Texture, nullptr, nullptr);
+    SDL_RenderPresent(m_Renderer);
+}