AAudio(Android Advanced Audio)是Android平臺上的一種高級音頻API,它提供了低延遲、高質量的音頻處理能力。要實現音頻同步,你可以遵循以下步驟:
aaudio_createDevice()
函數來完成。AAudioDevice *device = nullptr;
AAudio_result result = aaudio_createDevice(&device, 0, AAUDIO_FORMAT_PCM_16BIT, 44100, 2, AAUDIO_DIRECTION_OUTPUT);
if (result != AAUDIO_RESULT_OK) {
// 處理錯誤
}
aaudio_openStream()
函數來完成。AAudioStream *stream = nullptr;
result = aaudio_openStream(device, &stream, 0, AAUDIO_FORMAT_PCM_16BIT, 44100, 2, AAUDIO_DIRECTION_OUTPUT);
if (result != AAUDIO_RESULT_OK) {
// 處理錯誤
}
const int SAMPLE_RATE = 44100;
const int CHANNEL_COUNT = 2;
const int SAMPLE_FORMAT = AAUDIO_FORMAT_PCM_16BIT;
const int FRAME_SIZE = SAMPLE_RATE * CHANNEL_COUNT * sizeof(int16_t);
uint8_t *audioData = new uint8_t[FRAME_SIZE];
// 填充音頻樣本
for (int i = 0; i < FRAME_SIZE / sizeof(int16_t); ++i) {
int16_t sample = static_cast<int16_t>(i * 4000 / SAMPLE_RATE); // 示例音頻樣本
memcpy(audioData + i * sizeof(int16_t), &sample, sizeof(int16_t));
}
aaudio_write()
函數來完成。result = aaudio_write(stream, audioData, FRAME_SIZE);
if (result != AAUDIO_RESULT_OK) {
// 處理錯誤
}
while (true) {
result = aaudio_write(stream, audioData, FRAME_SIZE);
if (result != AAUDIO_RESULT_OK) {
// 處理錯誤
}
// 等待音頻數據播放完畢
aaudio_flushStream(stream);
}
aaudio_closeStream(stream);
aaudio_deleteDevice(device);
通過以上步驟,你可以使用AAudio API在Android平臺上實現音頻同步。請注意,這里的示例代碼僅作為參考,你可能需要根據實際需求進行調整。