Add offset support to BitstreamBuffer.

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 "content/common/gpu/media/vaapi_video_decode_accelerator.h"
 
 #include <string.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 238 matching lines @@
  private:
   scoped_refptr<VaapiDecodeSurface> VP9PictureToVaapiDecodeSurface(
       const scoped_refptr<VP9Picture>& pic);
 
   VaapiWrapper* vaapi_wrapper_;
   VaapiVideoDecodeAccelerator* vaapi_dec_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiVP9Accelerator);
 };
 
-VaapiVideoDecodeAccelerator::InputBuffer::InputBuffer() : id(0), size(0) {
-}
+VaapiVideoDecodeAccelerator::InputBuffer::InputBuffer() : id(0) {}
 
 VaapiVideoDecodeAccelerator::InputBuffer::~InputBuffer() {
 }
 
 void VaapiVideoDecodeAccelerator::NotifyError(Error error) {
   if (message_loop_ != base::MessageLoop::current()) {
     DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
     message_loop_->PostTask(FROM_HERE, base::Bind(
         &VaapiVideoDecodeAccelerator::NotifyError, weak_this_, error));
     return;
@@ skipping 169 matching lines @@
 
 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());
 
   DVLOG(4) << "Mapping new input buffer id: " << bitstream_buffer.id()
            << " size: " << (int)bitstream_buffer.size();
 
-  scoped_ptr<base::SharedMemory> shm(
-      new base::SharedMemory(bitstream_buffer.handle(), true));
-  RETURN_AND_NOTIFY_ON_FAILURE(shm->Map(bitstream_buffer.size()),
-                              "Failed to map input buffer", UNREADABLE_INPUT,);
+  scoped_ptr<SharedMemoryRegion> shm(
+      new SharedMemoryRegion(bitstream_buffer, true));
+  RETURN_AND_NOTIFY_ON_FAILURE(shm->Map(), "Failed to map input buffer",
+                               UNREADABLE_INPUT, );
 
   base::AutoLock auto_lock(lock_);
 
   // Set up a new input buffer and queue it for later.
   linked_ptr<InputBuffer> input_buffer(new InputBuffer());
   input_buffer->shm.reset(shm.release());
   input_buffer->id = bitstream_buffer.id();
-  input_buffer->size = bitstream_buffer.size();
 
   ++num_stream_bufs_at_decoder_;
   TRACE_COUNTER1("Video Decoder", "Stream buffers at decoder",
                  num_stream_bufs_at_decoder_);
 
   input_buffers_.push(input_buffer);
   input_ready_.Signal();
 }
 
 bool VaapiVideoDecodeAccelerator::GetInputBuffer_Locked() {
@@ skipping 18 matching lines @@
       if (input_buffers_.empty())
         return false;
       // else fallthrough
     case kDecoding:
     case kIdle:
       DCHECK(!input_buffers_.empty());
 
       curr_input_buffer_ = input_buffers_.front();
       input_buffers_.pop();
 
-      DVLOG(4) << "New current bitstream buffer, id: "
-               << curr_input_buffer_->id
-               << " size: " << curr_input_buffer_->size;
+      DVLOG(4) << "New current bitstream buffer, id: " << curr_input_buffer_->id
+               << " size: " << curr_input_buffer_->shm->size();
 
       decoder_->SetStream(
           static_cast<uint8_t*>(curr_input_buffer_->shm->memory()),
-          curr_input_buffer_->size);
+          curr_input_buffer_->shm->size());
       return true;
 
     default:
       // We got woken up due to being destroyed/reset, ignore any already
       // queued inputs.
       return false;
   }
 }
 
 void VaapiVideoDecodeAccelerator::ReturnCurrInputBuffer_Locked() {
@@ skipping 1231 matching lines @@
   return vaapi_pic->dec_surface();
 }
 
 // static
 media::VideoDecodeAccelerator::SupportedProfiles
 VaapiVideoDecodeAccelerator::GetSupportedProfiles() {
   return VaapiWrapper::GetSupportedDecodeProfiles();
 }
 
 }  // namespace content