@Test
public void flvNellymoserTest() throws Exception {
logger.info("flvNellymoserTest");
Muxer muxer =
Muxer.make(this.getClass().getCanonicalName() + ".flv_nellymoser.flv", null, null);
Encoder encoder = Encoder.make(Codec.findEncodingCodec(Codec.ID.CODEC_ID_NELLYMOSER));
Type findType = null;
for (Type type : encoder.getCodec().getSupportedAudioFormats()) {
if (findType == null) {
findType = type;
}
if (type == Type.SAMPLE_FMT_S16) {
findType = type;
break;
}
}
logger.info(findType.toString());
int sampleRate = 44100;
encoder.setSampleRate(sampleRate);
Rational encoderTimeBase = Rational.make(1, sampleRate);
encoder.setTimeBase(encoderTimeBase);
encoder.setChannels(1);
encoder.setChannelLayout(Layout.CH_LAYOUT_MONO);
encoder.setSampleFormat(findType);
encoder.setFlag(Flag.FLAG_GLOBAL_HEADER, true);
encoder.open(null, null);
muxer.addNewStream(encoder);
processConvert(muxer, encoder);
logger.info("done");
}
/**
* make sine wave humble MediaAudio.
*
* @return
*/
private MediaAudio beepSamples() {
int sampleRate = 44100; // 44.1KHz
int sampleNum = 44100; // 44100 samples(1sec)
int channel = 2; // 2channel(stereo)
int tone = 440; // 440Hz tone.
int bit = 16; // 16bit
ByteBuffer buffer = ByteBuffer.allocate((int) sampleNum * bit * channel / 8);
double rad = tone * 2 * Math.PI / sampleRate; // radian for each sample.
double max = (1 << (bit - 2)) - 1; // ampletude
buffer.order(ByteOrder.LITTLE_ENDIAN);
for (int i = 0; i < sampleNum; i++) {
short data = (short) (Math.sin(rad * i) * max);
for (int j = 0; j < channel; j++) {
buffer.putShort(data);
}
}
buffer.flip();
logger.info("data size for 1sec buffer.:" + buffer.remaining());
MediaAudio samples =
MediaAudio.make(
sampleNum, sampleRate, channel, Layout.CH_LAYOUT_STEREO, Type.SAMPLE_FMT_S16);
samples.getData(0).put(buffer.array(), 0, 0, buffer.remaining());
logger.info(
"{}",
samples.getDataPlaneSize(0)); // why this size is little bit bigger than original buffer?
samples.setComplete(true);
samples.setTimeBase(Rational.make(1, 44100));
samples.setTimeStamp(0);
samples.setNumSamples(sampleNum);
return samples;
}
