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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/browser/speech/google_one_shot_remote_engine.h" | 5 #include "content/browser/speech/google_one_shot_remote_engine.h" |
| 6 | 6 |
| 7 #include <stddef.h> |
| 8 #include <stdint.h> |
| 9 |
| 7 #include <vector> | 10 #include <vector> |
| 8 | 11 |
| 9 #include "base/json/json_reader.h" | 12 #include "base/json/json_reader.h" |
| 10 #include "base/strings/string_number_conversions.h" | 13 #include "base/strings/string_number_conversions.h" |
| 11 #include "base/strings/string_util.h" | 14 #include "base/strings/string_util.h" |
| 12 #include "base/values.h" | 15 #include "base/values.h" |
| 13 #include "content/browser/speech/audio_buffer.h" | 16 #include "content/browser/speech/audio_buffer.h" |
| 14 #include "content/public/common/speech_recognition_error.h" | 17 #include "content/public/common/speech_recognition_error.h" |
| 15 #include "content/public/common/speech_recognition_result.h" | 18 #include "content/public/common/speech_recognition_result.h" |
| 16 #include "google_apis/google_api_keys.h" | 19 #include "google_apis/google_api_keys.h" |
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| 240 | 243 |
| 241 void GoogleOneShotRemoteEngine::AudioChunksEnded() { | 244 void GoogleOneShotRemoteEngine::AudioChunksEnded() { |
| 242 DCHECK(url_fetcher_.get()); | 245 DCHECK(url_fetcher_.get()); |
| 243 DCHECK(encoder_.get()); | 246 DCHECK(encoder_.get()); |
| 244 | 247 |
| 245 // UploadAudioChunk requires a non-empty final buffer. So we encode a packet | 248 // UploadAudioChunk requires a non-empty final buffer. So we encode a packet |
| 246 // of silence in case encoder had no data already. | 249 // of silence in case encoder had no data already. |
| 247 size_t sample_count = | 250 size_t sample_count = |
| 248 config_.audio_sample_rate * kAudioPacketIntervalMs / 1000; | 251 config_.audio_sample_rate * kAudioPacketIntervalMs / 1000; |
| 249 scoped_refptr<AudioChunk> dummy_chunk(new AudioChunk( | 252 scoped_refptr<AudioChunk> dummy_chunk(new AudioChunk( |
| 250 sample_count * sizeof(int16), encoder_->GetBitsPerSample() / 8)); | 253 sample_count * sizeof(int16_t), encoder_->GetBitsPerSample() / 8)); |
| 251 encoder_->Encode(*dummy_chunk.get()); | 254 encoder_->Encode(*dummy_chunk.get()); |
| 252 encoder_->Flush(); | 255 encoder_->Flush(); |
| 253 scoped_refptr<AudioChunk> encoded_dummy_data( | 256 scoped_refptr<AudioChunk> encoded_dummy_data( |
| 254 encoder_->GetEncodedDataAndClear()); | 257 encoder_->GetEncodedDataAndClear()); |
| 255 DCHECK(!encoded_dummy_data->IsEmpty()); | 258 DCHECK(!encoded_dummy_data->IsEmpty()); |
| 256 encoder_.reset(); | 259 encoder_.reset(); |
| 257 | 260 |
| 258 url_fetcher_->AppendChunkToUpload(encoded_dummy_data->AsString(), true); | 261 url_fetcher_->AppendChunkToUpload(encoded_dummy_data->AsString(), true); |
| 259 } | 262 } |
| 260 | 263 |
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| 285 | 288 |
| 286 bool GoogleOneShotRemoteEngine::IsRecognitionPending() const { | 289 bool GoogleOneShotRemoteEngine::IsRecognitionPending() const { |
| 287 return url_fetcher_ != NULL; | 290 return url_fetcher_ != NULL; |
| 288 } | 291 } |
| 289 | 292 |
| 290 int GoogleOneShotRemoteEngine::GetDesiredAudioChunkDurationMs() const { | 293 int GoogleOneShotRemoteEngine::GetDesiredAudioChunkDurationMs() const { |
| 291 return kAudioPacketIntervalMs; | 294 return kAudioPacketIntervalMs; |
| 292 } | 295 } |
| 293 | 296 |
| 294 } // namespace content | 297 } // namespace content |
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