Move talk/media to webrtc/media

talk/media/devices/gtkvideorenderer.cc

-/*
- * libjingle
- * Copyright 2004 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-// Implementation of GtkVideoRenderer
-
-#include "talk/media/devices/gtkvideorenderer.h"
-
-#include <gdk/gdk.h>
-#include <glib.h>
-#include <gtk/gtk.h>
-
-#include "talk/media/base/videocommon.h"
-#include "talk/media/base/videoframe.h"
-
-namespace cricket {
-
-class ScopedGdkLock {
- public:
-  ScopedGdkLock() {
-    gdk_threads_enter();
-  }
-
-  ~ScopedGdkLock() {
-    gdk_threads_leave();
-  }
-};
-
-GtkVideoRenderer::GtkVideoRenderer(int x, int y)
-    : window_(NULL),
-      draw_area_(NULL),
-      initial_x_(x),
-      initial_y_(y),
-      width_(0),
-      height_(0) {
-  g_type_init();
-  // g_thread_init API is deprecated since glib 2.31.0, see release note:
-  // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
-#if !GLIB_CHECK_VERSION(2, 31, 0)
-  g_thread_init(NULL);
-#endif
-  gdk_threads_init();
-}
-
-GtkVideoRenderer::~GtkVideoRenderer() {
-  if (window_) {
-    ScopedGdkLock lock;
-    gtk_widget_destroy(window_);
-    // Run the Gtk main loop to tear down the window.
-    Pump();
-  }
-  // Don't need to destroy draw_area_ because it is not top-level, so it is
-  // implicitly destroyed by the above.
-}
-
-bool GtkVideoRenderer::SetSize(int width, int height, int reserved) {
-  ScopedGdkLock lock;
-
-  // If the dimension is the same, no-op.
-  if (width_ == width && height_ == height) {
-    return true;
-  }
-
-  // For the first frame, initialize the GTK window
-  if ((!window_ && !Initialize(width, height)) || IsClosed()) {
-    return false;
-  }
-
-  image_.reset(new uint8_t[width * height * 4]);
-  gtk_widget_set_size_request(draw_area_, width, height);
-
-  width_ = width;
-  height_ = height;
-  return true;
-}
-
-bool GtkVideoRenderer::RenderFrame(const VideoFrame* video_frame) {
-  if (!video_frame) {
-    return false;
-  }
-
-  const VideoFrame* frame = video_frame->GetCopyWithRotationApplied();
-
-  // Need to set size as the frame might be rotated.
-  if (!SetSize(frame->GetWidth(), frame->GetHeight(), 0)) {
-    return false;
-  }
-
-  // convert I420 frame to ABGR format, which is accepted by GTK
-  frame->ConvertToRgbBuffer(cricket::FOURCC_ABGR,
-                            image_.get(),
-                            frame->GetWidth() * frame->GetHeight() * 4,
-                            frame->GetWidth() * 4);
-
-  ScopedGdkLock lock;
-
-  if (IsClosed()) {
-    return false;
-  }
-
-  // draw the ABGR image
-  gdk_draw_rgb_32_image(draw_area_->window,
-                        draw_area_->style->fg_gc[GTK_STATE_NORMAL],
-                        0,
-                        0,
-                        frame->GetWidth(),
-                        frame->GetHeight(),
-                        GDK_RGB_DITHER_MAX,
-                        image_.get(),
-                        frame->GetWidth() * 4);
-
-  // Run the Gtk main loop to refresh the window.
-  Pump();
-  return true;
-}
-
-bool GtkVideoRenderer::Initialize(int width, int height) {
-  gtk_init(NULL, NULL);
-  window_ = gtk_window_new(GTK_WINDOW_TOPLEVEL);
-  draw_area_ = gtk_drawing_area_new();
-  if (!window_ || !draw_area_) {
-    return false;
-  }
-
-  gtk_window_set_position(GTK_WINDOW(window_), GTK_WIN_POS_CENTER);
-  gtk_window_set_title(GTK_WINDOW(window_), "Video Renderer");
-  gtk_window_set_resizable(GTK_WINDOW(window_), FALSE);
-  gtk_widget_set_size_request(draw_area_, width, height);
-  gtk_container_add(GTK_CONTAINER(window_), draw_area_);
-  gtk_widget_show_all(window_);
-  gtk_window_move(GTK_WINDOW(window_), initial_x_, initial_y_);
-
-  image_.reset(new uint8_t[width * height * 4]);
-  return true;
-}
-
-void GtkVideoRenderer::Pump() {
-  while (gtk_events_pending()) {
-    gtk_main_iteration();
-  }
-}
-
-bool GtkVideoRenderer::IsClosed() const {
-  if (!window_) {
-    // Not initialized yet, so hasn't been closed.
-    return false;
-  }
-
-  if (!GTK_IS_WINDOW(window_) || !GTK_IS_DRAWING_AREA(draw_area_)) {
-    return true;
-  }
-
-  return false;
-}
-
-}  // namespace cricket