public static VideoCodecMeta createCodecMeta(
VirtualTrack src, H264Encoder encoder, int thumbWidth, int thumbHeight) {
VideoCodecMeta codecMeta = (VideoCodecMeta) src.getCodecMeta();
AvcCBox createAvcC =
H264Utils.createAvcC(
encoder.initSPS(new Size(thumbWidth, thumbHeight)), encoder.initPPS(), 4);
return VideoCodecMeta.createVideoCodecMeta(
"avc1",
H264Utils.getAvcCData(createAvcC),
new Size(thumbWidth, thumbHeight),
codecMeta.getPasp());
}
private static void mux(FramesMP4MuxerTrack track, File f) throws IOException {
MappedH264ES es = new MappedH264ES(NIOUtils.map(f));
ArrayList<ByteBuffer> spsList = new ArrayList<ByteBuffer>();
ArrayList<ByteBuffer> ppsList = new ArrayList<ByteBuffer>();
Packet frame = null;
while ((frame = es.nextFrame()) != null) {
ByteBuffer data = frame.getData();
H264Utils.wipePS(data, spsList, ppsList);
H264Utils.encodeMOVPacket(data);
MP4Packet pkt = new MP4Packet(new Packet(frame, data), frame.getPts(), 0);
System.out.println(pkt.getFrameNo());
track.addFrame(pkt);
}
addSampleEntry(track, es.getSps(), es.getPps());
}
public ByteBuffer transcodeFrame(ByteBuffer src, ByteBuffer dst) throws IOException {
if (src == null) return null;
Picture8Bit decoded = decoder.decodeFrame8Bit(src, pic0.getData());
if (pic1 == null) {
pic1 =
Picture8Bit.create(
decoded.getWidth(), decoded.getHeight(), encoder.getSupportedColorSpaces()[0]);
transform =
ColorUtil.getTransform8Bit(decoded.getColor(), encoder.getSupportedColorSpaces()[0]);
}
transform.transform(decoded, pic1);
pic1.setCrop(new Rect(0, 0, track.thumbWidth, track.thumbHeight));
int rate = TARGET_RATE;
do {
try {
encoder.encodeFrame8Bit(pic1, dst);
break;
} catch (BufferOverflowException ex) {
Logger.warn("Abandon frame, buffer too small: " + dst.capacity());
rate -= 10;
rc.setRate(rate);
}
} while (rate > 10);
rc.setRate(TARGET_RATE);
H264Utils.encodeMOVPacket(dst);
return dst;
}
public static int readSE(BitReader bits, String message) {
int val = readUE(bits);
val = H264Utils.golomb2Signed(val);
trace(message, val);
return val;
}
public static void validateVideoOutputFormat(MediaFormat format) {
String mime = format.getString(MediaFormat.KEY_MIME);
// Refer: http://developer.android.com/guide/appendix/media-formats.html#core
// Refer: http://en.wikipedia.org/wiki/MPEG-4_Part_14#Data_streams
if (!MediaFormatExtraConstants.MIMETYPE_VIDEO_AVC.equals(mime)) {
throw new InvalidOutputFormatException(
"Video codecs other than AVC is not supported, actual mime type: " + mime);
}
ByteBuffer spsBuffer = AvcCsdUtils.getSpsBuffer(format);
SeqParameterSet sps = H264Utils.readSPS(spsBuffer);
if (sps.profile_idc != PROFILE_IDC_BASELINE) {
throw new InvalidOutputFormatException(
"Non-baseline AVC video profile is not supported by Android OS, actual profile_idc: "
+ sps.profile_idc);
}
}
@Override
public int probe(ByteBuffer data) {
boolean validSps = false, validPps = false, validSh = false;
for (ByteBuffer nalUnit : H264Utils.splitFrame(data.duplicate())) {
NALUnit marker = NALUnit.read(nalUnit);
if (marker.type == NALUnitType.IDR_SLICE || marker.type == NALUnitType.NON_IDR_SLICE) {
BitReader reader = new BitReader(nalUnit);
validSh = validSh(new SliceHeaderReader().readPart1(reader));
break;
} else if (marker.type == NALUnitType.SPS) {
validSps = validSps(SeqParameterSet.read(nalUnit));
} else if (marker.type == NALUnitType.PPS) {
validPps = validPps(PictureParameterSet.read(nalUnit));
}
}
return (validSh ? 60 : 0) + (validSps ? 20 : 0) + (validPps ? 20 : 0);
}
private void writeH264WithStartCode(AVPacket frame) throws IOException {
ByteBuffer data = frame.getByteBuffer();
if (data.remaining() > 4 && 1 != data.getInt(data.position())) {
logger.warn("H264 Not Start With 0x00 00 00 01");
return;
}
List<ByteBuffer> segs = H264Utils.splitFrame(data);
int dataSize = 5 + 4 * segs.size();
for (ByteBuffer seg : segs) {
dataSize += seg.remaining();
}
ChannelBuffer avc = ChannelBuffers.buffer(11 + dataSize + 4 + 4 + 5);
avc.writeByte(0x09); // video type
avc.writeMedium(dataSize); // tag data size
// timestamp
long timestamp = frame.getTimestamp(AVTimeUnit.MILLISECONDS);
avc.writeMedium((int) (0xFFFFFF & timestamp));
avc.writeByte((int) (0xFF & (timestamp >> 24)));
avc.writeMedium(0x0); // stream id
avc.writeByte(frame.isKeyFrame() ? 0x17 : 0x27); // key frame + avc
avc.writeByte(0x01); // avc NAL
avc.writeMedium(
(int) frame.getCompositionTime(AVTimeUnit.MILLISECONDS)); // Composition time offset
// data
for (ByteBuffer seg : segs) {
avc.writeInt(seg.remaining());
avc.writeBytes(seg);
}
avc.writeInt(avc.readableBytes()); // pre tag size
avc.readBytes(out, avc.readableBytes());
}
public ByteBuffer transcode(ByteBuffer data, ByteBuffer _out) {
return transcode(H264Utils.splitFrame(data), _out);
}
@Override
public Frame decodeFrame8Bit(ByteBuffer data, byte[][] buffer) {
return new FrameDecoder().decodeFrame(H264Utils.splitFrame(data), buffer);
}
@Override
public Picture decodeFrame(ByteBuffer data, int[][] buffer) {
Frame frame =
new FrameDecoder().decodeFrame(H264Utils.splitFrame(data), getSameSizeBuffer(buffer));
return frame == null ? null : frame.toPicture(8, buffer);
}
