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PortAudio V19-devel (pa_stable_v19_20140130)을 사용하여 TTS (텍스트 음성 변환) 엔진의 출력을 합성합니다.PortAudio에서 Pa_IsStreamActive를 사용하는 방법?
먼저 오디오 스트림이 비활성 상태가 될 때 호출되도록 PaStreamFinishedCallback (void *userData)을 사용하여 함수를 등록했습니다. 결국, Stream State Machine 따르면
는 상태 beeing는 동안 "액티브"는과 paAbort 복귀 (오디오 데이터를 처리하기위한 콜백 beeing는 말해서), 우리는 상태로의 전이를 트리거 '콜백 완료 "및 Pa_IsStreamActive 0을 반환 버퍼가 취소되었습니다.
불행히도 Pa_IsStreamActive이 paAbort 다음에 1을 반환하므로이 작업을 수행하는 방법을 알지 못합니다. 문제는 모든 버퍼가 취소되었는지 확인하는 것입니다. 이 오디오 스트림 후 호출되는 내 콜백 코드가 완료되어
int AudioConnection::onAudioDataReceived (const void *input, void *output,
unsigned long frames, const PaStreamCallbackTimeInfo *time,
PaStreamCallbackFlags status, void *userdata
) {
int finished;
unsigned int i;
AudioConnection *data = (AudioConnection *)userdata;
unsigned int framesLeft = data->numFrames - data->cursor;
int8_t *out = (int8_t *)output;
// Declared to prevent unused variable warnings
(void) time; (void) input; (void) status;
if (framesLeft >= frames) {
for (i = 0; i < frames; i++) {
*out++ = data->audioSamples[data->cursor++];
*out++ = data->audioSamples[data->cursor++];
}
data->cursor += frames;
finished = paContinue;
}
else if (framesLeft == 0) {
*out++ = 0;
*out++ = 0;
data->cursor = 0;
finished = paAbort;
}
// final buffer
else if (framesLeft < frames) {
for (i = 0; i < framesLeft; i++) {
*out++ = data->audioSamples[data->cursor++];
*out++ = data->audioSamples[data->cursor++];
}
data->cursor = 0;
finished = paComplete;
}
// should never happen
else {
finished = paAbort;
}
return finished;
}
: 당신이 내 코드의 해당 조각을 찾을 수 아래의
void AudioConnection::onAudioStreamFinished (void *userdata) {
AudioConnection *data = (AudioConnection *) userdata;
ACE_DEBUG ((LM_TRACE, ACE_TEXT ("(%t | %P | %D | %N) AudioConnection::onAudioStreamFinished()\n")));
ACE_DEBUG ((LM_TRACE, ACE_TEXT ("(%t | %P | %D | %N) AudioConnection::isAudioStreamActive() = %d \n"), data->isAudioStreamActive()));
}
그리고
bool AudioConnection::isAudioStreamActive() {
return Pa_IsStreamActive (audioStream) ? true : false;
}
다음 추적은 문제를 나타냅니다 - 나는 마지막 줄에 isAudioStreamActive이 0을 반환 할 것으로 기대합니다. 이에 대한 모든 의견을 환영합니다. 감사!
(1987417168 | 19339 | 2016-09-27 23:10:30.935040 | ../src/AudioConnection.cpp) AudioConnection::isAudioStreamActive() = 0
(1987417168 | 19339 | 2016-09-27 23:10:30.936162 | ../src/AudioConnection.cpp) AudioConnection::playAudioStream()
(1954542672 | 19339 | 2016-09-27 23:10:30.977247 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 27648
(1954542672 | 19339 | 2016-09-27 23:10:31.007114 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 26112
(1954542672 | 19339 | 2016-09-27 23:10:31.037122 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 24576
(1954542672 | 19339 | 2016-09-27 23:10:31.067106 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 23040
(1954542672 | 19339 | 2016-09-27 23:10:31.097107 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 21504
(1954542672 | 19339 | 2016-09-27 23:10:31.137147 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 19968
(1954542672 | 19339 | 2016-09-27 23:10:31.187113 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 18432
(1954542672 | 19339 | 2016-09-27 23:10:31.237124 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 16896
(1954542672 | 19339 | 2016-09-27 23:10:31.287146 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 15360
(1954542672 | 19339 | 2016-09-27 23:10:31.337112 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 13824
(1954542672 | 19339 | 2016-09-27 23:10:31.387106 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 12288
(1954542672 | 19339 | 2016-09-27 23:10:31.437225 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 10752
(1954542672 | 19339 | 2016-09-27 23:10:31.487161 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 9216
(1954542672 | 19339 | 2016-09-27 23:10:31.537158 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 7680
(1954542672 | 19339 | 2016-09-27 23:10:31.587206 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 6144
(1954542672 | 19339 | 2016-09-27 23:10:31.637156 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 4608
(1954542672 | 19339 | 2016-09-27 23:10:31.687188 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 3072
(1954542672 | 19339 | 2016-09-27 23:10:31.737236 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 1536
(1954542672 | 19339 | 2016-09-27 23:10:31.787165 | ../src/AudioConnection.cpp) AudioConnection framesLeft: 0 .......silence.
(1954542672 | 19339 | 2016-09-27 23:10:31.787428 | ../src/AudioConnection.cpp) AudioConnection::onAudioStreamFinished()
(1954542672 | 19339 | 2016-09-27 23:10:31.787736 | ../src/AudioConnection.cpp) AudioConnection::isAudioStreamActive() = 1