AAudio(Android Advanced Audio)是Android平台上的一种高级音频API,它提供了低延迟、高质量的音频处理能力。要实现音频同步,你可以遵循以下步骤:
aaudio_createDevice()
函数来完成。AAudioDevice *device = nullptr;
AAudio_result result = aaudio_createDevice(&device, 0, AAUDIO_FORMAT_PCM_16BIT, 44100, 2, AAUDIO_DIRECTION_OUTPUT);
if (result != AAUDIO_RESULT_OK) {
// 处理错误
}
aaudio_openStream()
函数来完成。AAudioStream *stream = nullptr;
result = aaudio_openStream(device, &stream, 0, AAUDIO_FORMAT_PCM_16BIT, 44100, 2, AAUDIO_DIRECTION_OUTPUT);
if (result != AAUDIO_RESULT_OK) {
// 处理错误
}
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];
// 填充音频样本
for (int i = 0; i < FRAME_SIZE / sizeof(int16_t); ++i) {
int16_t sample = static_cast<int16_t>(i * 4000 / SAMPLE_RATE); // 示例音频样本
memcpy(audioData + i * sizeof(int16_t), &sample, sizeof(int16_t));
}
aaudio_write()
函数来完成。result = aaudio_write(stream, audioData, FRAME_SIZE);
if (result != AAUDIO_RESULT_OK) {
// 处理错误
}
while (true) {
result = aaudio_write(stream, audioData, FRAME_SIZE);
if (result != AAUDIO_RESULT_OK) {
// 处理错误
}
// 等待音频数据播放完毕
aaudio_flushStream(stream);
}
aaudio_closeStream(stream);
aaudio_deleteDevice(device);
通过以上步骤,你可以使用AAudio API在Android平台上实现音频同步。请注意,这里的示例代码仅作为参考,你可能需要根据实际需求进行调整。