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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_streaming_remote_engine.h" | 5 #include "content/browser/speech/google_streaming_remote_engine.h" |
| 6 | 6 |
| 7 #include <vector> | 7 #include <vector> |
| 8 | 8 |
| 9 #include "base/bind.h" | 9 #include "base/bind.h" |
| 10 #include "base/command_line.h" | 10 #include "base/command_line.h" |
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| 429 // TODO(hans): We need a better error code for this. | 429 // TODO(hans): We need a better error code for this. |
| 430 return Abort(SPEECH_RECOGNITION_ERROR_ABORTED); | 430 return Abort(SPEECH_RECOGNITION_ERROR_ABORTED); |
| 431 case proto::SpeechRecognitionEvent::STATUS_BAD_GRAMMAR: | 431 case proto::SpeechRecognitionEvent::STATUS_BAD_GRAMMAR: |
| 432 return Abort(SPEECH_RECOGNITION_ERROR_BAD_GRAMMAR); | 432 return Abort(SPEECH_RECOGNITION_ERROR_BAD_GRAMMAR); |
| 433 case proto::SpeechRecognitionEvent::STATUS_LANGUAGE_NOT_SUPPORTED: | 433 case proto::SpeechRecognitionEvent::STATUS_LANGUAGE_NOT_SUPPORTED: |
| 434 // TODO(hans): We need a better error code for this. | 434 // TODO(hans): We need a better error code for this. |
| 435 return Abort(SPEECH_RECOGNITION_ERROR_ABORTED); | 435 return Abort(SPEECH_RECOGNITION_ERROR_ABORTED); |
| 436 } | 436 } |
| 437 } | 437 } |
| 438 | 438 |
| 439 SpeechRecognitionResults results; |
| 439 for (int i = 0; i < ws_event.result_size(); ++i) { | 440 for (int i = 0; i < ws_event.result_size(); ++i) { |
| 440 const proto::SpeechRecognitionResult& ws_result = ws_event.result(i); | 441 const proto::SpeechRecognitionResult& ws_result = ws_event.result(i); |
| 441 SpeechRecognitionResult result; | 442 results.push_back(SpeechRecognitionResult()); |
| 443 SpeechRecognitionResult& result = results.back(); |
| 442 result.is_provisional = !(ws_result.has_final() && ws_result.final()); | 444 result.is_provisional = !(ws_result.has_final() && ws_result.final()); |
| 443 | 445 |
| 444 if (!result.is_provisional) | 446 if (!result.is_provisional) |
| 445 got_last_definitive_result_ = true; | 447 got_last_definitive_result_ = true; |
| 446 | 448 |
| 447 for (int j = 0; j < ws_result.alternative_size(); ++j) { | 449 for (int j = 0; j < ws_result.alternative_size(); ++j) { |
| 448 const proto::SpeechRecognitionAlternative& ws_alternative = | 450 const proto::SpeechRecognitionAlternative& ws_alternative = |
| 449 ws_result.alternative(j); | 451 ws_result.alternative(j); |
| 450 SpeechRecognitionHypothesis hypothesis; | 452 SpeechRecognitionHypothesis hypothesis; |
| 451 if (ws_alternative.has_confidence()) | 453 if (ws_alternative.has_confidence()) |
| 452 hypothesis.confidence = ws_alternative.confidence(); | 454 hypothesis.confidence = ws_alternative.confidence(); |
| 453 else if (ws_result.has_stability()) | 455 else if (ws_result.has_stability()) |
| 454 hypothesis.confidence = ws_result.stability(); | 456 hypothesis.confidence = ws_result.stability(); |
| 455 DCHECK(ws_alternative.has_transcript()); | 457 DCHECK(ws_alternative.has_transcript()); |
| 456 // TODO(hans): Perhaps the transcript should be required in the proto? | 458 // TODO(hans): Perhaps the transcript should be required in the proto? |
| 457 if (ws_alternative.has_transcript()) | 459 if (ws_alternative.has_transcript()) |
| 458 hypothesis.utterance = UTF8ToUTF16(ws_alternative.transcript()); | 460 hypothesis.utterance = UTF8ToUTF16(ws_alternative.transcript()); |
| 459 | 461 |
| 460 result.hypotheses.push_back(hypothesis); | 462 result.hypotheses.push_back(hypothesis); |
| 461 } | 463 } |
| 464 } |
| 462 | 465 |
| 463 delegate()->OnSpeechRecognitionEngineResult(result); | 466 delegate()->OnSpeechRecognitionEngineResults(results); |
| 464 } | |
| 465 | 467 |
| 466 return state_; | 468 return state_; |
| 467 } | 469 } |
| 468 | 470 |
| 469 GoogleStreamingRemoteEngine::FSMState | 471 GoogleStreamingRemoteEngine::FSMState |
| 470 GoogleStreamingRemoteEngine::RaiseNoMatchErrorIfGotNoResults( | 472 GoogleStreamingRemoteEngine::RaiseNoMatchErrorIfGotNoResults( |
| 471 const FSMEventArgs& event_args) { | 473 const FSMEventArgs& event_args) { |
| 472 if (!got_last_definitive_result_) { | 474 if (!got_last_definitive_result_) { |
| 473 // Provide an empty result to notify that recognition is ended with no | 475 // Provide an empty result to notify that recognition is ended with no |
| 474 // errors, yet neither any further results. | 476 // errors, yet neither any further results. |
| 475 delegate()->OnSpeechRecognitionEngineResult(SpeechRecognitionResult()); | 477 delegate()->OnSpeechRecognitionEngineResults(SpeechRecognitionResults()); |
| 476 } | 478 } |
| 477 return AbortSilently(event_args); | 479 return AbortSilently(event_args); |
| 478 } | 480 } |
| 479 | 481 |
| 480 GoogleStreamingRemoteEngine::FSMState | 482 GoogleStreamingRemoteEngine::FSMState |
| 481 GoogleStreamingRemoteEngine::CloseUpstreamAndWaitForResults( | 483 GoogleStreamingRemoteEngine::CloseUpstreamAndWaitForResults( |
| 482 const FSMEventArgs&) { | 484 const FSMEventArgs&) { |
| 483 DCHECK(upstream_fetcher_.get()); | 485 DCHECK(upstream_fetcher_.get()); |
| 484 DCHECK(encoder_.get()); | 486 DCHECK(encoder_.get()); |
| 485 | 487 |
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| 586 } | 588 } |
| 587 | 589 |
| 588 GoogleStreamingRemoteEngine::FSMEventArgs::FSMEventArgs(FSMEvent event_value) | 590 GoogleStreamingRemoteEngine::FSMEventArgs::FSMEventArgs(FSMEvent event_value) |
| 589 : event(event_value) { | 591 : event(event_value) { |
| 590 } | 592 } |
| 591 | 593 |
| 592 GoogleStreamingRemoteEngine::FSMEventArgs::~FSMEventArgs() { | 594 GoogleStreamingRemoteEngine::FSMEventArgs::~FSMEventArgs() { |
| 593 } | 595 } |
| 594 | 596 |
| 595 } // namespace content | 597 } // namespace content |
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