1 files changed, 72 insertions, 0 deletions
diff --git a/xbmc/rendering/gles/ScreenshotSurfaceGLES.cpp b/xbmc/rendering/gles/ScreenshotSurfaceGLES.cpp
new file mode 100644
index 0000000..3c290ec
--- /dev/null
+++ b/xbmc/rendering/gles/ScreenshotSurfaceGLES.cpp
@@ -0,0 +1,72 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "ScreenshotSurfaceGLES.h"
+
+#include "ServiceBroker.h"
+#include "guilib/GUIComponent.h"
+#include "guilib/GUIWindowManager.h"
+#include "utils/Screenshot.h"
+#include "windowing/GraphicContext.h"
+
+#include <mutex>
+#include <vector>
+
+#include "system_gl.h"
+
+void CScreenshotSurfaceGLES::Register()
+{
+  CScreenShot::Register(CScreenshotSurfaceGLES::CreateSurface);
+}
+
+std::unique_ptr<IScreenshotSurface> CScreenshotSurfaceGLES::CreateSurface()
+{
+  return std::unique_ptr<CScreenshotSurfaceGLES>(new CScreenshotSurfaceGLES());
+}
+
+bool CScreenshotSurfaceGLES::Capture()
+{
+  CWinSystemBase* winsystem = CServiceBroker::GetWinSystem();
+  if (!winsystem)
+    return false;
+
+  CGUIComponent* gui = CServiceBroker::GetGUI();
+  if (!gui)
+    return false;
+
+  std::unique_lock<CCriticalSection> lock(winsystem->GetGfxContext());
+  gui->GetWindowManager().Render();
+
+  //get current viewport
+  GLint viewport[4];
+  glGetIntegerv(GL_VIEWPORT, viewport);
+
+  m_width = viewport[2] - viewport[0];
+  m_height = viewport[3] - viewport[1];
+  m_stride = m_width * 4;
+  std::vector<uint8_t> surface(m_stride * m_height);
+
+  //read pixels from the backbuffer
+  glReadPixels(viewport[0], viewport[1], viewport[2], viewport[3], GL_RGBA, GL_UNSIGNED_BYTE, static_cast<GLvoid*>(surface.data()));
+
+  //make a new buffer and copy the read image to it with the Y axis inverted
+  m_buffer = new unsigned char[m_stride * m_height];
+  for (int y = 0; y < m_height; y++)
+  {
+    // we need to save in BGRA order so XOR Swap RGBA -> BGRA
+    unsigned char* swap_pixels = surface.data() + (m_height - y - 1) * m_stride;
+    for (int x = 0; x < m_width; x++, swap_pixels += 4)
+    {
+      std::swap(swap_pixels[0], swap_pixels[2]);
+    }
+
+    memcpy(m_buffer + y * m_stride, surface.data() + (m_height - y - 1) * m_stride, m_stride);
+  }
+
+  return m_buffer != nullptr;
+}