Android使用MediaCodec编码录音,之后使用SmartPublisherPostAudioEncodedData(long handle, int codec_id, ByteBuffer data, int size, int is_key_frame, long timestamp,ByteBuffer parameter_info, int parameter_info_size)音频直播推流的完整代码
时间: 2024-03-11 13:47:42 浏览: 116
很抱歉,我无法提供完整的代码。但我可以提供一些参考和指导。
首先,在使用MediaCodec编码录音之前,需要获取音频数据。可以使用Android提供的AudioRecord类来实现。以下是获取音频数据的示例代码:
```
int bufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
AudioRecord audioRecorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelConfig, audioFormat, bufferSize);
byte[] audioBuffer = new byte[bufferSize];
audioRecorder.startRecording();
while (isRecording) {
int readResult = audioRecorder.read(audioBuffer, 0, bufferSize);
if (readResult > 0) {
// 处理音频数据
}
}
audioRecorder.stop();
```
接下来是使用MediaCodec进行编码。以下是使用MediaCodec将PCM格式的音频数据编码为AAC格式的音频数据的示例代码:
```
MediaCodec audioEncoder = MediaCodec.createEncoderByType("audio/mp4a-latm");
MediaFormat audioFormat = MediaFormat.createAudioFormat("audio/mp4a-latm", sampleRate, channelCount);
audioFormat.setInteger(MediaFormat.KEY_BIT_RATE, bitRate);
audioFormat.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
audioEncoder.configure(audioFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
audioEncoder.start();
ByteBuffer[] inputBuffers = audioEncoder.getInputBuffers();
ByteBuffer[] outputBuffers = audioEncoder.getOutputBuffers();
MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
boolean isInputEnd = false;
boolean isOutputEnd = false;
while (!isOutputEnd) {
if (!isInputEnd) {
int inputBufferIndex = audioEncoder.dequeueInputBuffer(-1);
if (inputBufferIndex >= 0) {
ByteBuffer inputBuffer = inputBuffers[inputBufferIndex];
inputBuffer.clear();
int inputLength = inputBuffer.limit();
int readResult = audioBuffer.remaining() >= inputLength ? inputLength : audioBuffer.remaining();
if (readResult == -1) {
isInputEnd = true;
audioEncoder.queueInputBuffer(inputBufferIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
} else {
inputBuffer.put(audioBuffer, 0, readResult);
audioEncoder.queueInputBuffer(inputBufferIndex, 0, readResult, System.nanoTime() / 1000, 0);
}
}
}
int outputBufferIndex = audioEncoder.dequeueOutputBuffer(bufferInfo, 0);
if (outputBufferIndex >= 0) {
ByteBuffer outputBuffer = outputBuffers[outputBufferIndex];
outputBuffer.position(bufferInfo.offset);
outputBuffer.limit(bufferInfo.offset + bufferInfo.size);
byte[] aacBuffer = new byte[bufferInfo.size + 7];
addADTSHeader(aacBuffer, bufferInfo.size + 7);
outputBuffer.get(aacBuffer, 7, bufferInfo.size);
outputBuffer.position(bufferInfo.offset);
// 处理AAC格式的音频数据
audioEncoder.releaseOutputBuffer(outputBufferIndex, false);
}
}
audioEncoder.stop();
audioEncoder.release();
```
最后是使用SmartPublisherPostAudioEncodedData()方法将编码后的音频数据推流。以下是使用SmartPublisherPostAudioEncodedData()方法进行音频推流的示例代码:
```
int codecId = 1; // AAC
ByteBuffer parameterInfo = ByteBuffer.allocate(1);
parameterInfo.put((byte) 0);
smartPublisher.SmartPublisherPostAudioEncodedData(handle, codecId, ByteBuffer.wrap(aacBuffer), aacBuffer.length, 0, System.currentTimeMillis(), parameterInfo, 1);
```
需要注意的是,以上代码仅供参考,实际使用时需要根据具体情况进行修改和完善。同时,还需要保证音频采集和编码的参数设置与推流服务器的要求一致,以确保推流的稳定和正常。
阅读全文