Pepper: PPB_VideoDecoder software-only mode.

content/renderer/pepper/pepper_video_decoder_host.cc

 // Copyright (c) 2014 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 "content/renderer/pepper/pepper_video_decoder_host.h"
 
 #include "base/bind.h"
 #include "base/memory/shared_memory.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/public/renderer/render_thread.h"
@@ skipping 93 matching lines @@
     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_VideoDecoder_Reset,
                                         OnHostMsgReset)
   PPAPI_END_MESSAGE_MAP()
   return PP_ERROR_FAILED;
 }
 
 int32_t PepperVideoDecoderHost::OnHostMsgInitialize(
     ppapi::host::HostMessageContext* context,
     const ppapi::HostResource& graphics_context,
     PP_VideoProfile profile,
-    bool allow_software_fallback) {
+    PP_HardwareAcceleration acceleration) {
   if (initialized_)
     return PP_ERROR_FAILED;
 
   EnterResourceNoLock<PPB_Graphics3D_API> enter_graphics(
       graphics_context.host_resource(), true);
   if (enter_graphics.failed())
     return PP_ERROR_FAILED;
   PPB_Graphics3D_Impl* graphics3d =
       static_cast<PPB_Graphics3D_Impl*>(enter_graphics.object());
 
   int command_buffer_route_id = graphics3d->GetCommandBufferRouteId();
   if (!command_buffer_route_id)
     return PP_ERROR_FAILED;
 
   media::VideoCodecProfile media_profile = PepperToMediaVideoProfile(profile);
 
-  // This is not synchronous, but subsequent IPC messages will be buffered, so
-  // it is okay to immediately send IPC messages through the returned channel.
-  GpuChannelHost* channel = graphics3d->channel();
-  DCHECK(channel);
-  decoder_ = channel->CreateVideoDecoder(command_buffer_route_id);
-  if (decoder_ && decoder_->Initialize(media_profile, this)) {
-    initialized_ = true;
-    return PP_OK;
+  if (acceleration != PP_HARDWAREACCELERATION_NONE) {
+    // This is not synchronous, but subsequent IPC messages will be buffered, so
+    // it is okay to immediately send IPC messages through the returned channel.
+    GpuChannelHost* channel = graphics3d->channel();
+    DCHECK(channel);
+    decoder_ = channel->CreateVideoDecoder(command_buffer_route_id);
+    if (decoder_ && decoder_->Initialize(media_profile, this)) {
+      initialized_ = true;
+      return PP_OK;
+    }
+    decoder_.reset();
+    if (acceleration == PP_HARDWAREACCELERATION_ONLY)
+      return PP_ERROR_NOTSUPPORTED;
   }
-  decoder_.reset();
 
 #if defined(OS_ANDROID)
   return PP_ERROR_NOTSUPPORTED;
 #else
-  if (!allow_software_fallback)
-    return PP_ERROR_NOTSUPPORTED;
-
   decoder_.reset(new VideoDecoderShim(this));
   initialize_reply_context_ = context->MakeReplyMessageContext();
   decoder_->Initialize(media_profile, this);
 
   return PP_OK_COMPLETIONPENDING;
 #endif
 }
 
 int32_t PepperVideoDecoderHost::OnHostMsgGetShm(
     ppapi::host::HostMessageContext* context,
@@ skipping 242 matching lines @@
   host()->SendUnsolicitedReply(
       pp_resource(),
       PpapiPluginMsg_VideoDecoder_RequestTextures(
           requested_num_of_buffers,
           PP_MakeSize(dimensions.width(), dimensions.height()),
           texture_target,
           mailboxes));
 }
 
 }  // namespace content