| // 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 "chrome/browser/image_decoder.h" |
| |
| #include "base/bind.h" |
| #include "chrome/browser/browser_process.h" |
| #include "chrome/common/chrome_utility_messages.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/utility_process_host.h" |
| |
| using content::BrowserThread; |
| using content::UtilityProcessHost; |
| |
| ImageDecoder::ImageDecoder(Delegate* delegate, |
| const std::string& image_data, |
| ImageCodec image_codec) |
| : delegate_(delegate), |
| image_data_(image_data.begin(), image_data.end()), |
| image_codec_(image_codec), |
| task_runner_(NULL), |
| shrink_to_fit_(false) { |
| } |
| |
| ImageDecoder::~ImageDecoder() {} |
| |
| void ImageDecoder::Start(scoped_refptr<base::SequencedTaskRunner> task_runner) { |
| task_runner_ = task_runner; |
| BrowserThread::PostTask( |
| BrowserThread::IO, FROM_HERE, |
| base::Bind(&ImageDecoder::DecodeImageInSandbox, this, image_data_)); |
| } |
| |
| bool ImageDecoder::OnMessageReceived(const IPC::Message& message) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP(ImageDecoder, message) |
| IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Succeeded, |
| OnDecodeImageSucceeded) |
| IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Failed, |
| OnDecodeImageFailed) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP() |
| return handled; |
| } |
| |
| void ImageDecoder::OnDecodeImageSucceeded(const SkBitmap& decoded_image) { |
| DCHECK(task_runner_->RunsTasksOnCurrentThread()); |
| if (delegate_) |
| delegate_->OnImageDecoded(this, decoded_image); |
| } |
| |
| void ImageDecoder::OnDecodeImageFailed() { |
| DCHECK(task_runner_->RunsTasksOnCurrentThread()); |
| if (delegate_) |
| delegate_->OnDecodeImageFailed(this); |
| } |
| |
| void ImageDecoder::DecodeImageInSandbox( |
| const std::vector<unsigned char>& image_data) { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
| UtilityProcessHost* utility_process_host; |
| utility_process_host = UtilityProcessHost::Create(this, task_runner_.get()); |
| if (image_codec_ == ROBUST_JPEG_CODEC) { |
| utility_process_host->Send( |
| new ChromeUtilityMsg_RobustJPEGDecodeImage(image_data)); |
| } else { |
| utility_process_host->Send( |
| new ChromeUtilityMsg_DecodeImage(image_data, shrink_to_fit_)); |
| } |
| } |