Add offset support to BitstreamBuffer.

content/common/gpu/media/vaapi_jpeg_decode_accelerator.cc

 // Copyright 2015 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_jpeg_decode_accelerator.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 55 matching lines @@
            << frame_header.num_components << ", h=" << std::hex << h
            << ", v=" << v;
 
   return 0;
 }
 
 }  // namespace
 
 VaapiJpegDecodeAccelerator::DecodeRequest::DecodeRequest(
     const media::BitstreamBuffer& bitstream_buffer,
-    scoped_ptr<base::SharedMemory> shm,
+    scoped_ptr<SharedMemoryRegion> shm,
     const scoped_refptr<media::VideoFrame>& video_frame)
     : bitstream_buffer(bitstream_buffer),
       shm(shm.Pass()),
-      video_frame(video_frame) {
-}
+      video_frame(video_frame) {}
 
 VaapiJpegDecodeAccelerator::DecodeRequest::~DecodeRequest() {
 }
 
 void VaapiJpegDecodeAccelerator::NotifyError(int32_t bitstream_buffer_id,
                                              Error error) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DLOG(ERROR) << "Notifying of error " << error;
   DCHECK(client_);
   client_->NotifyError(bitstream_buffer_id, error);
@@ skipping 187 matching lines @@
 
 void VaapiJpegDecodeAccelerator::Decode(
     const media::BitstreamBuffer& bitstream_buffer,
     const scoped_refptr<media::VideoFrame>& video_frame) {
   DVLOG(3) << __func__;
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   TRACE_EVENT1("jpeg", "Decode", "input_id", bitstream_buffer.id());
 
   DVLOG(4) << "Mapping new input buffer id: " << bitstream_buffer.id()
            << " size: " << bitstream_buffer.size();
-  scoped_ptr<base::SharedMemory> shm(
-      new base::SharedMemory(bitstream_buffer.handle(), true));
+  scoped_ptr<SharedMemoryRegion> shm(
+      new SharedMemoryRegion(bitstream_buffer, true));
 
-  if (!shm->Map(bitstream_buffer.size())) {
+  if (!shm->Map()) {
     LOG(ERROR) << "Failed to map input buffer";
     NotifyErrorFromDecoderThread(bitstream_buffer.id(), UNREADABLE_INPUT);
     return;
   }
 
   scoped_ptr<DecodeRequest> request(
       new DecodeRequest(bitstream_buffer, shm.Pass(), video_frame));
 
   decoder_task_runner_->PostTask(
       FROM_HERE, base::Bind(&VaapiJpegDecodeAccelerator::DecodeTask,
                             base::Unretained(this), base::Passed(&request)));
 }
 
 bool VaapiJpegDecodeAccelerator::IsSupported() {
   return VaapiWrapper::IsJpegDecodeSupported();
 }
 
 }  // namespace content