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// 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_));
}
}
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