| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/speech/sandbox/audio_loader.h" |
| |
| #include <vector> |
| |
| namespace cobalt { |
| namespace speech { |
| namespace sandbox { |
| |
| namespace { |
| class DummyDecoder : public loader::Decoder { |
| public: |
| typedef base::Callback<void(const uint8*, int)> DoneCallback; |
| |
| explicit DummyDecoder(const DoneCallback& done_callback) |
| : done_callback_(done_callback) {} |
| ~DummyDecoder() OVERRIDE {} |
| |
| // This function is used for binding callback for creating DummyDecoder. |
| static scoped_ptr<Decoder> Create(const DoneCallback& done_callback) { |
| return scoped_ptr<Decoder>(new DummyDecoder(done_callback)); |
| } |
| |
| // From Decoder. |
| void DecodeChunk(const char* data, size_t size) OVERRIDE { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| // Because we load data into memory, set a maximum buffer size. |
| const int kMaxBufferSize = 1024 * 1024; |
| if (buffer_.size() + size > kMaxBufferSize) { |
| return; |
| } |
| buffer_.insert(buffer_.end(), data, data + size); |
| } |
| |
| void Finish() OVERRIDE { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| if (buffer_.size() == 0) { |
| // No data loaded. |
| done_callback_.Run(NULL, 0); |
| return; |
| } |
| |
| done_callback_.Run(reinterpret_cast<uint8*>(&buffer_[0]), buffer_.size()); |
| } |
| bool Suspend() OVERRIDE { |
| NOTIMPLEMENTED(); |
| return false; |
| } |
| void Resume(render_tree::ResourceProvider* /*resource_provider*/) OVERRIDE { |
| NOTIMPLEMENTED(); |
| } |
| |
| private: |
| base::ThreadChecker thread_checker_; |
| std::vector<char> buffer_; |
| DoneCallback done_callback_; |
| }; |
| } // namespace |
| |
| AudioLoader::AudioLoader(const GURL& url, |
| network::NetworkModule* network_module, |
| const DoneCallback& callback) |
| : network_module_(network_module), done_callback_(callback) { |
| DCHECK(url.is_valid()); |
| DCHECK(!callback.is_null()); |
| |
| fetcher_factory_.reset(new loader::FetcherFactory(network_module_)); |
| loader_ = make_scoped_ptr(new loader::Loader( |
| base::Bind(&loader::FetcherFactory::CreateFetcher, |
| base::Unretained(fetcher_factory_.get()), url), |
| scoped_ptr<loader::Decoder>(new DummyDecoder( |
| base::Bind(&AudioLoader::OnLoadingDone, base::Unretained(this)))), |
| base::Bind(&AudioLoader::OnLoadingError, base::Unretained(this)))); |
| } |
| |
| AudioLoader::~AudioLoader() {} |
| |
| void AudioLoader::OnLoadingDone(const uint8* data, int size) { |
| done_callback_.Run(data, size); |
| } |
| |
| void AudioLoader::OnLoadingError(const std::string& error) { |
| DLOG(WARNING) << "OnLoadingError with error message: " << error; |
| } |
| |
| } // namespace sandbox |
| } // namespace speech |
| } // namespace cobalt |