zukopvd
commented
8 years ago Hello again!
Here is more information about this issue. I'm working with m4a files that was encoded by android MediaCodec (code below). On all of my test devices encoding works fine: resutl codec name is correct (OMX.google.aac.decoder), file is playable and can be parsed to waveform by ringdroid. But issue comes to the one of devices when I try to parse file with your waveform-android libriary. Device is: Sony Xperia Tablet Z3 Compact under Android 5.1.1 - file that was encoded there is playable, can be parsed with ringdroid, but with waveform-android it's always throw "java.io.IOException: Went over by 7 bytes" and it's always at third step of parse iterations:
04-03 15:08:26.853 24412-24628/com.semantive.waveformandroid.waveform.soundfile.CheapAAC: skipLen: 16, atomLen: 24, mOffset: 8, initialOffset: 0, header: [0, 0, 0, 24, 102, 116, 121, 112] 04-03 15:08:26.853 24412-24628/com.semantive.waveformandroid.waveform.soundfile.CheapAAC: skipLen: 6136, atomLen: 6144, mOffset: 32, initialOffset: 24, header: [0, 0, 24, 0, 102, 114, 101, 101] 04-03 15:08:26.854 24412-24628/com.semantive.waveformandroid.waveform.soundfile.CheapAAC: skipLen: -7, atomLen: 1, mOffset: 6176, initialOffset: 6168, header: [0, 0, 0, 1, 109, 100, 97, 116] 04-03 15:08:26.854 24412-24628/ W/System.err: java.io.IOException: Went over by 7 bytes 04-03 15:08:26.854 24412-24628/W/System.err: at com.semantive.waveformandroid.waveform.soundfile.CheapAAC.parseMp4(CheapAAC.java:288) 04-03 15:08:26.854 24412-24628/ W/System.err: at com.semantive.waveformandroid.waveform.soundfile.CheapAAC.ReadFile(CheapAAC.java:200) 04-03 15:08:26.855 24412-24628/ W/System.err: at com.semantive.waveformandroid.waveform.soundfile.CheapSoundFile.create(CheapSoundFile.java:100)
If I put to Sony any m4a file, that was encoded on other device parse works fine. Here is encoding code that I used. May be I should do something in different way:
`
private static void convertWavToM4A(File wavFile, File dstM4AFile, MediaFormat format) {
final String COMPRESSED_AUDIO_FILE_MIME_TYPE = "audio/mp4a-latm";
final int COMPRESSED_AUDIO_FILE_BIT_RATE = 256000;
final int SAMPLING_RATE = format == null ? 44100 : format.getInteger(MediaFormat.KEY_SAMPLE_RATE);
final int BUFFER_SIZE = SAMPLING_RATE;
final int CODEC_TIMEOUT_IN_MS = 5000;
final int CHANNELS_COUNT = format == null ? 1 : format.getInteger(MediaFormat.KEY_CHANNEL_COUNT);
try {
FileInputStream fis = new FileInputStream(wavFile);
if (dstM4AFile.exists()) dstM4AFile.delete();
MediaMuxer mux = new MediaMuxer(dstM4AFile.getAbsolutePath(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
MediaFormat outputFormat = MediaFormat.createAudioFormat(COMPRESSED_AUDIO_FILE_MIME_TYPE, SAMPLING_RATE, CHANNELS_COUNT);
outputFormat.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
outputFormat.setInteger(MediaFormat.KEY_BIT_RATE, COMPRESSED_AUDIO_FILE_BIT_RATE);
outputFormat.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, BUFFER_SIZE);
MediaCodec codec = MediaCodec.createEncoderByType(COMPRESSED_AUDIO_FILE_MIME_TYPE);
codec.configure(outputFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
codec.start();
ByteBuffer[] codecInputBuffers = codec.getInputBuffers(); // Note: Array of buffers
ByteBuffer[] codecOutputBuffers = codec.getOutputBuffers();
MediaCodec.BufferInfo outBuffInfo = new MediaCodec.BufferInfo();
byte[] tempBuffer = new byte[BUFFER_SIZE];
boolean hasMoreData = true;
double presentationTimeUs = 0;
int audioTrackIdx = 0;
int totalBytesRead = 0;
do {
int inputBufIndex = 0;
while (inputBufIndex != -1 && hasMoreData) {
inputBufIndex = codec.dequeueInputBuffer(CODEC_TIMEOUT_IN_MS);
if (inputBufIndex >= 0) {
ByteBuffer dstBuf = codecInputBuffers[inputBufIndex];
dstBuf.clear();
int bytesRead = fis.read(tempBuffer, 0, dstBuf.limit());
if (bytesRead == -1) { // -1 implies EOS
hasMoreData = false;
codec.queueInputBuffer(inputBufIndex, 0, 0, (long) presentationTimeUs, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
} else {
totalBytesRead += bytesRead;
dstBuf.put(tempBuffer, 0, bytesRead);
codec.queueInputBuffer(inputBufIndex, 0, bytesRead, (long) presentationTimeUs, 0);
presentationTimeUs = 1000000l * (totalBytesRead / (SAMPLING_RATE/10000)) / SAMPLING_RATE;
}
}
}
int outputBufIndex = 0;
while (outputBufIndex != MediaCodec.INFO_TRY_AGAIN_LATER) {
outputBufIndex = codec.dequeueOutputBuffer(outBuffInfo, CODEC_TIMEOUT_IN_MS);
if (outputBufIndex >= 0) {
ByteBuffer encodedData = codecOutputBuffers[outputBufIndex];
encodedData.position(outBuffInfo.offset);
encodedData.limit(outBuffInfo.offset + outBuffInfo.size);
if ((outBuffInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0 && outBuffInfo.size != 0) {
codec.releaseOutputBuffer(outputBufIndex, false);
} else {
mux.writeSampleData(audioTrackIdx, codecOutputBuffers[outputBufIndex], outBuffInfo);
codec.releaseOutputBuffer(outputBufIndex, false);
}
} else if (outputBufIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
outputFormat = codec.getOutputFormat();
audioTrackIdx = mux.addTrack(outputFormat);
mux.start();
} else if (outputBufIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
} else if (outputBufIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
// NO OP
} else {
}
}
} while (outBuffInfo.flags != MediaCodec.BUFFER_FLAG_END_OF_STREAM);
codec.stop();
codec.release();
fis.close();
mux.stop();
mux.release();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}`I hope it's will be helpful to resolve this issue.
Thanks. Serge.
solitaire
Hello! Can you please suggest me what can i do with "Went over 7 bytes" exception? One of my test devices always trows it at CheapAAC.parseMp4(CheapAAC.java:285). It's always "7" bytes for every m4a file that i try to use. How can i solve it?
Thanks. Serge.