Refactor Vaapi video decoder/encoder in preparation of Freon support

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"
 #include "base/synchronization/waitable_event.h"
-#include "base/threading/non_thread_safe.h"
 #include "content/common/gpu/gpu_channel.h"
+#include "content/common/gpu/media/vaapi_picture.h"
 #include "content/common/gpu/media/vaapi_video_decode_accelerator.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/video/picture.h"
 #include "ui/gl/gl_bindings.h"
-#include "ui/gl/scoped_binders.h"
 
 static void ReportToUMA(
     content::VaapiH264Decoder::VAVDAH264DecoderFailure failure) {
   UMA_HISTOGRAM_ENUMERATION(
       "Media.VAVDAH264.DecoderFailure",
       failure,
       content::VaapiH264Decoder::VAVDA_H264_DECODER_FAILURES_MAX);
 }
 
 namespace content {
@@ skipping 25 matching lines @@
   message_loop_->PostTask(FROM_HERE, base::Bind(
       &VaapiVideoDecodeAccelerator::Cleanup, weak_this_));
 
   LOG(ERROR) << "Notifying of error " << error;
   if (client_) {
     client_->NotifyError(error);
     client_ptr_factory_.reset();
   }
 }
 
-// TFPPicture allocates X Pixmaps and binds them to textures passed
-// in PictureBuffers from clients to them. TFPPictures are created as
-// a consequence of receiving a set of PictureBuffers from clients and released
-// at the end of decode (or when a new set of PictureBuffers is required).
-//
-// TFPPictures are used for output, contents of VASurfaces passed from decoder
-// are put into the associated pixmap memory and sent to client.
-class VaapiVideoDecodeAccelerator::TFPPicture : public base::NonThreadSafe {
- public:
-  ~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);
-
-  int32 picture_buffer_id() {
-    return picture_buffer_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,
-             Display* x_display,
-             int32 picture_buffer_id,
-             uint32 texture_id,
-             gfx::Size size);
-
-  bool Initialize(const GLXFBConfig& fb_config);
-
-  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_;
-  GLXPixmap glx_pixmap_;
-
-  DISALLOW_COPY_AND_ASSIGN(TFPPicture);
-};
-
-VaapiVideoDecodeAccelerator::TFPPicture::TFPPicture(
-    const base::Callback<bool(void)>& make_context_current,
-    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),
-      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));
-
-  if (!tfp_picture->Initialize(fb_config))
-    tfp_picture.reset();
-
-  return tfp_picture;
-}
-
-bool VaapiVideoDecodeAccelerator::TFPPicture::Initialize(
-    const GLXFBConfig& fb_config) {
-  DCHECK(CalledOnValidThread());
-  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_) {
-    LOG(ERROR) << "Failed creating an X Pixmap for TFP";
-    return false;
-  }
-
-  static const int pixmap_attr[] = {
-    GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
-    GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT,
-    GL_NONE,
-  };
-
-  glx_pixmap_ = glXCreatePixmap(x_display_, fb_config, x_pixmap_, pixmap_attr);
-  if (!glx_pixmap_) {
-    // x_pixmap_ will be freed in the destructor.
-    LOG(ERROR) << "Failed creating a GLX Pixmap for TFP";
-    return false;
-  }
-
-  return true;
-}
-
-VaapiVideoDecodeAccelerator::TFPPicture::~TFPPicture() {
-  DCHECK(CalledOnValidThread());
-  // 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 (x_pixmap_)
-    XFreePixmap(x_display_, x_pixmap_);
-  XSync(x_display_, False);  // Needed to work around buggy vdpau-driver.
-}
-
-bool VaapiVideoDecodeAccelerator::TFPPicture::Bind() {
-  DCHECK(CalledOnValidThread());
-  DCHECK(x_pixmap_);
-  DCHECK(glx_pixmap_);
-  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);
-
-  return true;
-}
-
-VaapiVideoDecodeAccelerator::TFPPicture*
-    VaapiVideoDecodeAccelerator::TFPPictureById(int32 picture_buffer_id) {
-  TFPPictures::iterator it = tfp_pictures_.find(picture_buffer_id);
-  if (it == tfp_pictures_.end()) {
+VaapiPicture* VaapiVideoDecodeAccelerator::PictureById(
+    int32 picture_buffer_id) {
+  Pictures::iterator it = pictures_.find(picture_buffer_id);
+  if (it == pictures_.end()) {
     LOG(ERROR) << "Picture id " << picture_buffer_id << " does not exist";
     return NULL;
   }
 
   return it->second.get();
 }
 
 VaapiVideoDecodeAccelerator::VaapiVideoDecodeAccelerator(
-    Display* x_display,
     const base::Callback<bool(void)>& make_context_current)
-    : x_display_(x_display),
-      make_context_current_(make_context_current),
+    : make_context_current_(make_context_current),
       state_(kUninitialized),
       input_ready_(&lock_),
       surfaces_available_(&lock_),
       message_loop_(base::MessageLoop::current()),
       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),
       weak_this_factory_(this) {
   weak_this_ = weak_this_factory_.GetWeakPtr();
   va_surface_release_cb_ = media::BindToCurrentLoop(
       base::Bind(&VaapiVideoDecodeAccelerator::RecycleVASurfaceID, weak_this_));
 }
 
 VaapiVideoDecodeAccelerator::~VaapiVideoDecodeAccelerator() {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 }
 
-class XFreeDeleter {
- 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,
-  };
-
-  int num_fbconfigs;
-  scoped_ptr<GLXFBConfig, XFreeDeleter> glx_fb_configs(
-      glXChooseFBConfig(x_display_, DefaultScreen(x_display_), fbconfig_attr,
-                        &num_fbconfigs));
-  if (!glx_fb_configs)
-    return false;
-  if (!num_fbconfigs)
-    return false;
-
-  fb_config_ = glx_fb_configs.get()[0];
-  return true;
-}
-
 bool VaapiVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile,
                                              Client* client) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   client_ptr_factory_.reset(new base::WeakPtrFactory<Client>(client));
   client_ = client_ptr_factory_->GetWeakPtr();
 
   base::AutoLock auto_lock(lock_);
   DCHECK_EQ(state_, kUninitialized);
   DVLOG(2) << "Initializing VAVDA, profile: " << profile;
 
-  if (!make_context_current_.Run())
-    return false;
-
-  if (!InitializeFBConfig()) {
-    LOG(ERROR) << "Could not get a usable FBConfig";
+#if defined(USE_X11)
+  if (gfx::GetGLImplementation() != gfx::kGLImplementationDesktopGL) {
+    DVLOG(1) << "HW video decode acceleration not available without "
+                "DesktopGL (GLX).";
     return false;
   }
+#endif  // USE_X11
 
   vaapi_wrapper_ = VaapiWrapper::Create(
       VaapiWrapper::kDecode,
       profile,
-      x_display_,
       base::Bind(&ReportToUMA, content::VaapiH264Decoder::VAAPI_ERROR));
 
   if (!vaapi_wrapper_.get()) {
     LOG(ERROR) << "Failed initializing VAAPI";
     return false;
   }
 
   decoder_.reset(
       new VaapiH264Decoder(
           vaapi_wrapper_.get(),
@@ skipping 21 matching lines @@
   pending_output_cbs_.push(
       base::Bind(&VaapiVideoDecodeAccelerator::OutputPicture,
                  weak_this_, va_surface, input_id));
 
   TryOutputSurface();
 }
 
 void VaapiVideoDecodeAccelerator::OutputPicture(
     const scoped_refptr<VASurface>& va_surface,
     int32 input_id,
-    TFPPicture* tfp_picture) {
+    VaapiPicture* picture) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
-  int32 output_id  = tfp_picture->picture_buffer_id();
+  int32 output_id = picture->picture_buffer_id();
 
   TRACE_EVENT2("Video Decoder", "VAVDA::OutputSurface",
                "input_id", input_id,
                "output_id", output_id);
 
   DVLOG(3) << "Outputting VASurface " << va_surface->id()
            << " into pixmap bound to picture buffer id " << output_id;
 
-  RETURN_AND_NOTIFY_ON_FAILURE(tfp_picture->Bind(),
-                               "Failed binding texture to pixmap",
+  RETURN_AND_NOTIFY_ON_FAILURE(picture->DownloadFromSurface(va_surface),
+                               "Failed putting surface into pixmap",
                                PLATFORM_FAILURE, );
 
-  RETURN_AND_NOTIFY_ON_FAILURE(
-      vaapi_wrapper_->PutSurfaceIntoPixmap(va_surface->id(),
-                                           tfp_picture->x_pixmap(),
-                                           tfp_picture->size()),
-      "Failed putting surface into pixmap", PLATFORM_FAILURE, );
-
   // Notify the client a picture is ready to be displayed.
   ++num_frames_at_client_;
   TRACE_COUNTER1("Video Decoder", "Textures at client", num_frames_at_client_);
   DVLOG(4) << "Notifying output picture id " << output_id
            << " for input "<< input_id << " is ready";
   // TODO(posciak): Use visible size from decoder here instead
   // (crbug.com/402760).
   if (client_)
     client_->PictureReady(
-        media::Picture(output_id, input_id, gfx::Rect(tfp_picture->size())));
+        media::Picture(output_id, input_id, gfx::Rect(picture->size())));
 }
 
 void VaapiVideoDecodeAccelerator::TryOutputSurface() {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   // Handle Destroy() arriving while pictures are queued for output.
   if (!client_)
     return;
 
   if (pending_output_cbs_.empty() || output_buffers_.empty())
     return;
 
   OutputCB output_cb = pending_output_cbs_.front();
   pending_output_cbs_.pop();
 
-  TFPPicture* tfp_picture = TFPPictureById(output_buffers_.front());
-  DCHECK(tfp_picture);
+  VaapiPicture* picture = PictureById(output_buffers_.front());
+  DCHECK(picture);
   output_buffers_.pop();
 
-  output_cb.Run(tfp_picture);
+  output_cb.Run(picture);
 
   if (finish_flush_pending_ && pending_output_cbs_.empty())
     FinishFlush();
 }
 
 void VaapiVideoDecodeAccelerator::MapAndQueueNewInputBuffer(
     const media::BitstreamBuffer& bitstream_buffer) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
   TRACE_EVENT1("Video Decoder", "MapAndQueueNewInputBuffer", "input_id",
       bitstream_buffer.id());
@@ skipping 90 matching lines @@
   while (available_va_surfaces_.empty() &&
          (state_ == kDecoding || state_ == kFlushing || state_ == kIdle)) {
     surfaces_available_.Wait();
   }
 
   if (state_ != kDecoding && state_ != kFlushing && state_ != kIdle)
     return false;
 
   while (!available_va_surfaces_.empty()) {
     scoped_refptr<VASurface> va_surface(
-        new VASurface(available_va_surfaces_.front(), va_surface_release_cb_));
+        new VASurface(available_va_surfaces_.front(), requested_pic_size_,
+                      va_surface_release_cb_));
     available_va_surfaces_.pop_front();
     decoder_->ReuseSurface(va_surface);
   }
 
   return true;
 }
 
 void VaapiVideoDecodeAccelerator::DecodeTask() {
   DCHECK(decoder_thread_proxy_->BelongsToCurrentThread());
   TRACE_EVENT0("Video Decoder", "VAVDA::DecodeTask");
@@ skipping 71 matching lines @@
   TryFinishSurfaceSetChange();
 }
 
 void VaapiVideoDecodeAccelerator::TryFinishSurfaceSetChange() {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   if (!awaiting_va_surfaces_recycle_)
     return;
 
   if (!pending_output_cbs_.empty() ||
-      tfp_pictures_.size() != available_va_surfaces_.size()) {
+      pictures_.size() != available_va_surfaces_.size()) {
     // Either:
     // 1. Not all pending pending output callbacks have been executed yet.
     // Wait for the client to return enough pictures and retry later.
     // 2. The above happened and all surface release callbacks have been posted
     // as the result, but not all have executed yet. Post ourselves after them
     // to let them release surfaces.
     DVLOG(2) << "Awaiting pending output/surface release callbacks to finish";
     message_loop_->PostTask(FROM_HERE, base::Bind(
         &VaapiVideoDecodeAccelerator::TryFinishSurfaceSetChange, weak_this_));
     return;
   }
 
   // All surfaces released, destroy them and dismiss all PictureBuffers.
   awaiting_va_surfaces_recycle_ = false;
   available_va_surfaces_.clear();
   vaapi_wrapper_->DestroySurfaces();
 
-  for (TFPPictures::iterator iter = tfp_pictures_.begin();
-       iter != tfp_pictures_.end(); ++iter) {
+  for (Pictures::iterator iter = pictures_.begin(); iter != pictures_.end();
+       ++iter) {
     DVLOG(2) << "Dismissing picture id: " << iter->first;
     if (client_)
       client_->DismissPictureBuffer(iter->first);
   }
-  tfp_pictures_.clear();
+  pictures_.clear();
 
   // And ask for a new set as requested.
   DVLOG(1) << "Requesting " << requested_num_pics_ << " pictures of size: "
            << requested_pic_size_.ToString();
 
-  message_loop_->PostTask(FROM_HERE, base::Bind(
-      &Client::ProvidePictureBuffers, client_,
-      requested_num_pics_, requested_pic_size_, GL_TEXTURE_2D));
+  message_loop_->PostTask(
+      FROM_HERE,
+      base::Bind(&Client::ProvidePictureBuffers, client_, requested_num_pics_,
+                 requested_pic_size_, VaapiPicture::GetGLTextureTarget()));
 }
 
 void VaapiVideoDecodeAccelerator::Decode(
     const media::BitstreamBuffer& bitstream_buffer) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   TRACE_EVENT1("Video Decoder", "VAVDA::Decode", "Buffer id",
                bitstream_buffer.id());
 
   // We got a new input buffer from the client, map it and queue for later use.
@@ skipping 31 matching lines @@
 
   available_va_surfaces_.push_back(va_surface_id);
   surfaces_available_.Signal();
 }
 
 void VaapiVideoDecodeAccelerator::AssignPictureBuffers(
     const std::vector<media::PictureBuffer>& buffers) {
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
 
   base::AutoLock auto_lock(lock_);
-  DCHECK(tfp_pictures_.empty());
+  DCHECK(pictures_.empty());
 
   while (!output_buffers_.empty())
     output_buffers_.pop();
 
   RETURN_AND_NOTIFY_ON_FAILURE(
       buffers.size() == requested_num_pics_,
       "Got an invalid number of picture buffers. (Got " << buffers.size()
       << ", requested " << requested_num_pics_ << ")", INVALID_ARGUMENT, );
   DCHECK(requested_pic_size_ == buffers[0].size());
 
   std::vector<VASurfaceID> va_surface_ids;
   RETURN_AND_NOTIFY_ON_FAILURE(
       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];
 
-    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<VaapiPicture> picture(VaapiPicture::CreatePicture(
+        vaapi_wrapper_, make_context_current_, 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.",
+        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;
+    bool inserted =
+        pictures_.insert(std::make_pair(buffers[i].id(), 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_proxy_->PostTask(FROM_HERE, base::Bind(
       &VaapiVideoDecodeAccelerator::DecodeTask, base::Unretained(this)));
@@ skipping 187 matching lines @@
   DCHECK_EQ(message_loop_, base::MessageLoop::current());
   Cleanup();
   delete this;
 }
 
 bool VaapiVideoDecodeAccelerator::CanDecodeOnIOThread() {
   return false;
 }
 
 }  // namespace content