Enable GLX/EGL backend switching while run HW video decode with libva.

content/common/gpu/media/vaapi_video_decode_accelerator.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
@@ skipping 62 matching lines @@
   ~TFPPicture();
 
   static linked_ptr<TFPPicture> Create(
       const base::Callback<bool(void)>& make_context_current,
       const GLXFBConfig& fb_config,
       Display* x_display,
       int32 picture_buffer_id,
       uint32 texture_id,
       gfx::Size size);
 
+  static linked_ptr<TFPPicture> Create(
+      const base::Callback<bool(void)>& make_context_current,
+      const EGLDisplay egl_display,
+      Display* x_display,
+      int32 picture_buffer_id,
+      uint32 texture_id,
+      gfx::Size size);
   int32 picture_buffer_id() {
     return picture_buffer_id_;
   }
 
   uint32 texture_id() {
     return texture_id_;
   }
 
   gfx::Size size() {
     return size_;
   }
 
   int x_pixmap() {
     return x_pixmap_;
   }
 
   // Bind texture to pixmap. Needs to be called every frame.
   bool Bind();
 
  private:
   TFPPicture(const base::Callback<bool(void)>& make_context_current,
+             GLXFBConfig& fb_config,
+             Display* x_display,
+             int32 picture_buffer_id,
+             uint32 texture_id,
+             gfx::Size size);
+  TFPPicture(const base::Callback<bool(void)>& make_context_current,
+             EGLDisplay egl_display,
              Display* x_display,
              int32 picture_buffer_id,
              uint32 texture_id,
              gfx::Size size);
 
   bool Initialize(const GLXFBConfig& fb_config);
+  bool Initialize(const EGLDisplay egl_display);
 
   base::Callback<bool(void)> make_context_current_;
 
   Display* x_display_;
 
   // Output id for the client.
   int32 picture_buffer_id_;
   uint32 texture_id_;
 
   gfx::Size size_;
 
   // Pixmaps bound to this texture.
   Pixmap x_pixmap_;
+  EGLDisplay egl_display_;
+  EGLImageKHR egl_image_;
   GLXPixmap glx_pixmap_;
 
   DISALLOW_COPY_AND_ASSIGN(TFPPicture);
 };
+VaapiVideoDecodeAccelerator::TFPPicture::TFPPicture(
+    const base::Callback<bool(void)>& make_context_current,
+    GLXFBConfig& fb_config,
+    Display* x_display,
+    int32 picture_buffer_id,
+    uint32 texture_id,
+    gfx::Size size)
+    : make_context_current_(make_context_current),
+      x_display_(x_display),
+      picture_buffer_id_(picture_buffer_id),
+      texture_id_(texture_id),
+      size_(size),
+      x_pixmap_(0),
+      egl_image_(0),
+      glx_pixmap_(0) {
+  DCHECK(!make_context_current_.is_null());
+};
 
 VaapiVideoDecodeAccelerator::TFPPicture::TFPPicture(
     const base::Callback<bool(void)>& make_context_current,
+    EGLDisplay egl_display,
     Display* x_display,
     int32 picture_buffer_id,
     uint32 texture_id,
     gfx::Size size)
     : make_context_current_(make_context_current),
       x_display_(x_display),
       picture_buffer_id_(picture_buffer_id),
       texture_id_(texture_id),
       size_(size),
       x_pixmap_(0),
+      egl_display_(egl_display),
+      egl_image_(0),
       glx_pixmap_(0) {
   DCHECK(!make_context_current_.is_null());
 };
 
 linked_ptr<VaapiVideoDecodeAccelerator::TFPPicture>
 VaapiVideoDecodeAccelerator::TFPPicture::Create(
     const base::Callback<bool(void)>& make_context_current,
     const GLXFBConfig& fb_config,
     Display* x_display,
     int32 picture_buffer_id,
     uint32 texture_id,
     gfx::Size size) {
 
   linked_ptr<TFPPicture> tfp_picture(
-      new TFPPicture(make_context_current, x_display, picture_buffer_id,
-                     texture_id, size));
+      new TFPPicture(make_context_current, fb_config, x_display,
+                     picture_buffer_id, texture_id, size));
 
   if (!tfp_picture->Initialize(fb_config))
     tfp_picture.reset();
 
   return tfp_picture;
 }
 
+linked_ptr<VaapiVideoDecodeAccelerator::TFPPicture>
+VaapiVideoDecodeAccelerator::TFPPicture::Create(
+    const base::Callback<bool(void)>& make_context_current,
+    const EGLDisplay egl_display,
+    Display* x_display,
+    int32 picture_buffer_id,
+    uint32 texture_id,
+    gfx::Size size) {
+
+  linked_ptr<TFPPicture> tfp_picture(
+      new TFPPicture(make_context_current, egl_display, x_display,
+                     picture_buffer_id, texture_id, size));
+
+  if (!tfp_picture->Initialize(egl_display))
+    tfp_picture.reset();
+
+  return tfp_picture;
+}
 bool VaapiVideoDecodeAccelerator::TFPPicture::Initialize(
     const GLXFBConfig& fb_config) {
   // Check for NULL prevents unittests from crashing on nonexistent ChildThread.
   DCHECK(ChildThread::current() == NULL ||
       ChildThread::current()->message_loop() == base::MessageLoop::current());
 
   if (!make_context_current_.Run())
     return false;
 
   XWindowAttributes win_attr;
@@ skipping 16 matching lines @@
   glx_pixmap_ = glXCreatePixmap(x_display_, fb_config, x_pixmap_, pixmap_attr);
   if (!glx_pixmap_) {
     // x_pixmap_ will be freed in the destructor.
     DVLOG(1) << "Failed creating a GLX Pixmap for TFP";
     return false;
   }
 
   return true;
 }
 
+bool VaapiVideoDecodeAccelerator::TFPPicture::Initialize(
+    EGLDisplay egl_display) {
+  // Check for NULL prevents unittests from crashing on nonexistent ChildThread.
+  DCHECK(ChildThread::current() == NULL ||
+      ChildThread::current()->message_loop() == base::MessageLoop::current());
+
+  if (!make_context_current_.Run())
+    return false;
+
+  XWindowAttributes win_attr;
+  int screen = DefaultScreen(x_display_);
+  XGetWindowAttributes(x_display_, RootWindow(x_display_, screen), &win_attr);
+  //TODO(posciak): pass the depth required by libva, not the RootWindow's depth
+  x_pixmap_ = XCreatePixmap(x_display_, RootWindow(x_display_, screen),
+                            size_.width(), size_.height(), win_attr.depth);
+  if (!x_pixmap_) {
+    DVLOG(1) << "Failed creating an X Pixmap for TFP";
+    return false;
+  }
+
+  egl_display_ = egl_display;
+  EGLint image_attrs[] = { EGL_IMAGE_PRESERVED_KHR, 1 , EGL_NONE };
+
+  egl_image_ = eglCreateImageKHR(egl_display_,
+                                EGL_NO_CONTEXT,
+                                EGL_NATIVE_PIXMAP_KHR,
+                                (EGLClientBuffer)x_pixmap_,
+                                image_attrs);
+  if (!egl_image_) {
+    DVLOG(1) << "Failed creating a EGLImage from Pixmap for KHR";
+    return false;
+  }
+
+  return true;
+}
 VaapiVideoDecodeAccelerator::TFPPicture::~TFPPicture() {
   // Check for NULL prevents unittests from crashing on nonexistent ChildThread.
   DCHECK(ChildThread::current() == NULL ||
       ChildThread::current()->message_loop() == base::MessageLoop::current());
 
   // Unbind surface from texture and deallocate resources.
   if (glx_pixmap_ && make_context_current_.Run()) {
     glXReleaseTexImageEXT(x_display_, glx_pixmap_, GLX_FRONT_LEFT_EXT);
     glXDestroyPixmap(x_display_, glx_pixmap_);
   }
 
+  if (egl_image_ && make_context_current_.Run()) {
+      eglDestroyImageKHR(egl_display_, egl_image_);
+  }
+
   if (x_pixmap_)
     XFreePixmap(x_display_, x_pixmap_);
   XSync(x_display_, False);  // Needed to work around buggy vdpau-driver.
 }
 
 bool VaapiVideoDecodeAccelerator::TFPPicture::Bind() {
   DCHECK(x_pixmap_);
-  DCHECK(glx_pixmap_);
+
   // Check for NULL prevents unittests from crashing on nonexistent ChildThread.
   DCHECK(ChildThread::current() == NULL ||
       ChildThread::current()->message_loop() == base::MessageLoop::current());
 
   if (!make_context_current_.Run())
     return false;
 
   gfx::ScopedTextureBinder texture_binder(GL_TEXTURE_2D, texture_id_);
-  glXBindTexImageEXT(x_display_, glx_pixmap_, GLX_FRONT_LEFT_EXT, NULL);
-
+  if(glx_pixmap_) {
+    glXBindTexImageEXT(x_display_, glx_pixmap_, GLX_FRONT_LEFT_EXT, NULL);
+  } else if(egl_image_) {
+    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image_);
+  } else {
+    return false;
+  }
   return true;
 }
 
 VaapiVideoDecodeAccelerator::TFPPicture*
     VaapiVideoDecodeAccelerator::TFPPictureById(int32 picture_buffer_id) {
   TFPPictures::iterator it = tfp_pictures_.find(picture_buffer_id);
   if (it == tfp_pictures_.end()) {
     DVLOG(1) << "Picture id " << picture_buffer_id << " does not exist";
     return NULL;
   }
 
   return it->second.get();
 }
 
 VaapiVideoDecodeAccelerator::VaapiVideoDecodeAccelerator(
     Display* x_display, GLXContext glx_context,
     Client* client,
     const base::Callback<bool(void)>& make_context_current)
     : x_display_(x_display),
+      egl_context_(0),
       glx_context_(glx_context),
       make_context_current_(make_context_current),
       state_(kUninitialized),
       input_ready_(&lock_),
       surfaces_available_(&lock_),
       message_loop_(base::MessageLoop::current()),
       weak_this_(base::AsWeakPtr(this)),
       client_ptr_factory_(client),
       client_(client_ptr_factory_.GetWeakPtr()),
       decoder_thread_("VaapiDecoderThread"),
       num_frames_at_client_(0),
       num_stream_bufs_at_decoder_(0),
       finish_flush_pending_(false),
       awaiting_va_surfaces_recycle_(false),
       requested_num_pics_(0) {
   DCHECK(client);
 }
 
+VaapiVideoDecodeAccelerator::VaapiVideoDecodeAccelerator(
+    EGLDisplay egl_display, EGLContext egl_context,
+    Client* client,
+    const base::Callback<bool(void)>& make_context_current)
+    : x_display_(0),
+      egl_display_(egl_display),
+      egl_context_(egl_context),
+      glx_context_(0),
+      make_context_current_(make_context_current),
+      state_(kUninitialized),
+      input_ready_(&lock_),
+      surfaces_available_(&lock_),
+      message_loop_(base::MessageLoop::current()),
+      weak_this_(base::AsWeakPtr(this)),
+      client_ptr_factory_(client),
+      client_(client_ptr_factory_.GetWeakPtr()),
+      decoder_thread_("VaapiDecoderThread"),
+      num_frames_at_client_(0),
+      num_stream_bufs_at_decoder_(0),
+      finish_flush_pending_(false),
+      awaiting_va_surfaces_recycle_(false),
+      requested_num_pics_(0) {
+  DCHECK(client);
+}
 VaapiVideoDecodeAccelerator::~VaapiVideoDecodeAccelerator() {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 }
 
 class ScopedPtrXFree {
  public:
   void operator()(void* x) const {
     ::XFree(x);
   }
 };
 
 bool VaapiVideoDecodeAccelerator::InitializeFBConfig() {
-  const int fbconfig_attr[] = {
-    GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
-    GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
-    GLX_BIND_TO_TEXTURE_RGB_EXT, GL_TRUE,
-    GLX_Y_INVERTED_EXT, GL_TRUE,
-    GL_NONE,
-  };
+  if(glx_context_) {
+    const int fbconfig_attr[] = {
+      GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
+      GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
+      GLX_BIND_TO_TEXTURE_RGB_EXT, GL_TRUE,
+      GLX_Y_INVERTED_EXT, GL_TRUE,
+      GL_NONE,
+    };
 
-  int num_fbconfigs;
-  scoped_ptr_malloc<GLXFBConfig, ScopedPtrXFree> glx_fb_configs(
+    int num_fbconfigs;
+    scoped_ptr_malloc<GLXFBConfig, ScopedPtrXFree> glx_fb_configs(
       glXChooseFBConfig(x_display_, DefaultScreen(x_display_), fbconfig_attr,
                         &num_fbconfigs));
-  if (!glx_fb_configs)
+    if (!glx_fb_configs)
+      return false;
+    if (!num_fbconfigs)
+      return false;
+
+    fb_config_ = glx_fb_configs.get()[0];
+  } else if(egl_context_) {
+    x_display_ = base::MessagePumpForUI::GetDefaultXDisplay();
+  } else {
     return false;
-  if (!num_fbconfigs)
-    return false;
+  }
 
-  fb_config_ = glx_fb_configs.get()[0];
   return true;
 }
 
 bool VaapiVideoDecodeAccelerator::Initialize(
     media::VideoCodecProfile profile) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   base::AutoLock auto_lock(lock_);
   DCHECK_EQ(state_, kUninitialized);
   DVLOG(2) << "Initializing VAVDA, profile: " << profile;
@@ skipping 404 matching lines @@
       vaapi_wrapper_->CreateSurfaces(requested_pic_size_,
                                      buffers.size(),
                                      &va_surface_ids),
       "Failed creating VA Surfaces", PLATFORM_FAILURE, );
   DCHECK_EQ(va_surface_ids.size(), buffers.size());
 
   for (size_t i = 0; i < buffers.size(); ++i) {
     DVLOG(2) << "Assigning picture id: " << buffers[i].id()
              << " to texture id: " << buffers[i].texture_id()
              << " VASurfaceID: " << va_surface_ids[i];
+    if(glx_context_) {
+      linked_ptr<TFPPicture> tfp_picture(
+          TFPPicture::Create(make_context_current_, fb_config_, x_display_,
+                             buffers[i].id(), buffers[i].texture_id(),
+                             requested_pic_size_));
 
-    linked_ptr<TFPPicture> tfp_picture(
-        TFPPicture::Create(make_context_current_, fb_config_, x_display_,
-                           buffers[i].id(), buffers[i].texture_id(),
-                           requested_pic_size_));
+      RETURN_AND_NOTIFY_ON_FAILURE(
+          tfp_picture.get(), "Failed assigning picture buffer to a texture.",
+          PLATFORM_FAILURE, );
 
-    RETURN_AND_NOTIFY_ON_FAILURE(
-        tfp_picture.get(), "Failed assigning picture buffer to a texture.",
-        PLATFORM_FAILURE, );
+      bool inserted = tfp_pictures_.insert(std::make_pair(
+          buffers[i].id(), tfp_picture)).second;
+      DCHECK(inserted);
+    } else if(egl_context_) {
+      linked_ptr<TFPPicture> tfp_picture(
+          TFPPicture::Create(make_context_current_, egl_display_, x_display_,
+                             buffers[i].id(), buffers[i].texture_id(),
+                             requested_pic_size_));
 
-    bool inserted = tfp_pictures_.insert(std::make_pair(
-        buffers[i].id(), tfp_picture)).second;
-    DCHECK(inserted);
+      RETURN_AND_NOTIFY_ON_FAILURE(
+          tfp_picture.get(), "Failed assigning picture buffer to a texture.",
+          PLATFORM_FAILURE, );
+
+      bool inserted = tfp_pictures_.insert(std::make_pair(
+          buffers[i].id(), tfp_picture)).second;
+      DCHECK(inserted);
+    }
 
     output_buffers_.push(buffers[i].id());
     available_va_surfaces_.push_back(va_surface_ids[i]);
     surfaces_available_.Signal();
   }
 
   state_ = kDecoding;
   decoder_thread_.message_loop()->PostTask(FROM_HERE, base::Bind(
       &VaapiVideoDecodeAccelerator::DecodeTask, base::Unretained(this)));
 }
@@ skipping 183 matching lines @@
   state_ = kUninitialized;
 }
 
 void VaapiVideoDecodeAccelerator::Destroy() {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
   Cleanup();
   delete this;
 }
 
 }  // namespace content