private MediaStreamSample GetVideoSample2()
{
//Utility.Trace(" GetVideoSample2 ");
MediaStreamSample sample = new MediaStreamSample(this.videoStreamDescription, null, 0, 0, 0, emptyDict);
if (m_VmediaStreamEnd)
{
Utility.Trace(" GetVideoSample2 NULL stream has been sent!");
return(sample);
}
if (vIdx > (fNum - 1))
{
// free current video block
m_curVideoBlk = null;
Utility.Trace(" GetVideoSample,m_vbuffer WaitForWorkItem ");
m_vbuffer.WaitForWorkItem();
Utility.Trace(" GetVideoSample,m_vbuffer Got an Item ");
m_curVideoBlk = m_vbuffer.Dequeue();
if (m_curVideoBlk != null)
{
vIdx = 0;
fNum = (int)m_curVideoBlk.VideoFrameNum;
}
else
{
m_VmediaStreamEnd = true;
Utility.Trace(" GetVideoSample2 NULL stream has been sent!");
return(sample);
}
}
MemoryStream vStream = new MemoryStream();
int len = (int)m_curVideoBlk.vFrames[vIdx].Length;
vStream.Write(m_curVideoBlk.vFrames[vIdx]._data, 0, len);
MediaStreamSample mediaStreamSample = new MediaStreamSample
(
this.videoStreamDescription,
vStream,
0,
len,
m_curVideoBlk.vFrames[vIdx].RelativeTime, //// 以100 纳秒为单位
emptyDict
);
vIdx++;
return(mediaStreamSample);
}
public MSF.VideoBlock ParseVideoBlock(int offset, Stream _stream)
{
_stream.Seek(offset, SeekOrigin.Begin);
byte[] tmp = new byte[4];
MSF.VideoBlock vb = new MSF.VideoBlock();
_stream.Read(tmp, 0, 2);
vb.VideoBlockHeaderLength = (uint)BitTools.MaskBits(tmp, 0, 12);
//计算有多少个视频帧, 每个视频参数集 5byte
vb.VideoFrameNum = vb.VideoBlockHeaderLength / 5;
uint addr = (uint)offset + vb.VideoBlockHeaderLength + CRC_Size;
for (int i = 0; i < vb.VideoFrameNum; i++)
{
MSF.VideoBlock.VideoFrame f = new MSF.VideoBlock.VideoFrame();
//本段视频的开始地址
f.RelativeStartAddr = addr;
// 视频段长度
_stream.Read(tmp, 0, 2);
f.Length = (uint)BitTools.MaskBits(tmp, 0, 16);
// 帧类型，I帧 or P帧
_stream.Read(tmp, 0, 1);
f.FrameMode = (uint)BitTools.MaskBits(tmp, 0, 3);
if (vb.FirstIFrameIdx == -1 && f.FrameMode == 0)
{
vb.FirstIFrameIdx = i;
}
// 相对播放时间
if (BitTools.MaskBits(tmp, 7, 1) == 1) //相对时间提示
{
_stream.Read(tmp, 0, 2);
f.RelativeTime = BitTools.MaskBits(tmp, 0, 16) * timeUint;
}
// 本段视频流
//f._vs = BitTools.CopyToNewStream(_stream, (long)f.RelativeStartAddr, (int)f.Length);
BitTools.CopyFromStreamToBytesArray(_stream, (long)f.RelativeStartAddr, (int)f.Length, ref f._data);
vb.vFrames.Add(f);
//下一段视频的开始地址
addr += f.Length;
}
ParseNALHeader(vb);
return(vb);
}
protected override void OpenMediaAsync()
{
//WaveFormatEx
HeAacWaveFormat aacf = new HeAacWaveFormat();
WaveFormatExtensible wfx = new WaveFormatExtensible();
aacf.WaveFormatExtensible = wfx;
aacf.WaveFormatExtensible.FormatTag = 0x1610; //0xFF;//0x1610;
aacf.WaveFormatExtensible.Channels = 2; //
aacf.WaveFormatExtensible.BlockAlign = 1;
aacf.WaveFormatExtensible.BitsPerSample = 0; //16; //unkonw set to 0
aacf.WaveFormatExtensible.SamplesPerSec = 24000; // from 8000 to 96000 Hz
aacf.WaveFormatExtensible.AverageBytesPerSecond = 0; //wfx.SamplesPerSec * wfx.Channels * wfx.BitsPerSample / wfx.BlockAlign;
aacf.WaveFormatExtensible.Size = 12;
// Extra 3 words in WAVEFORMATEX
// refer to http://msdn.microsoft.com/en-us/library/windows/desktop/dd757806(v=vs.85).aspx
aacf.wPayloadType = 0x0; //Audio Data Transport Stream (ADTS). The stream contains an adts_sequence, as defined by MPEG-2.
aacf.wAudioProfileLevelIndication = 0xFE;
aacf.wStructType = 0;
string codecPrivateData = aacf.ToHexString();
Dictionary <MediaStreamAttributeKeys, string> audioStreamAttributes = new Dictionary <MediaStreamAttributeKeys, string>();
audioStreamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = codecPrivateData;
audioStreamDescription = new MediaStreamDescription(MediaStreamType.Audio, audioStreamAttributes);
m_vbuffer.WaitForWorkItem();
m_curVideoBlk = m_vbuffer.Dequeue().CommandParameter as MSF.VideoBlock;
if (m_curVideoBlk == null)
{
return;
}
vIdx = 0;
fNum = (int)m_curVideoBlk.VideoFrameNum;
H264NalFormat h264f = new H264NalFormat();
h264f.sps = m_curVideoBlk.FirstIFrameInfo.sps;
h264f.pps = m_curVideoBlk.FirstIFrameInfo.pps;
string s = h264f.ToHexString();
//Video
Dictionary <MediaStreamAttributeKeys, string> videoStreamAttributes = new Dictionary <MediaStreamAttributeKeys, string>();
videoStreamAttributes[MediaStreamAttributeKeys.VideoFourCC] = "H264";
videoStreamAttributes[MediaStreamAttributeKeys.Height] = "240";
videoStreamAttributes[MediaStreamAttributeKeys.Width] = "320";
videoStreamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = s;//"0000016742E00D96520283F40500000168CE388000";
videoStreamDescription = new MediaStreamDescription(MediaStreamType.Video, videoStreamAttributes);
//Media
Dictionary <MediaSourceAttributesKeys, string> mediaSourceAttributes = new Dictionary <MediaSourceAttributesKeys, string>();
mediaSourceAttributes[MediaSourceAttributesKeys.Duration] = TimeSpan.FromSeconds(6).Ticks.ToString(CultureInfo.InvariantCulture);
mediaSourceAttributes[MediaSourceAttributesKeys.CanSeek] = "0";
List <MediaStreamDescription> mediaStreamDescriptions = new List <MediaStreamDescription>();
#if !DEBUG
// Emulator does not support HE-AAC
mediaStreamDescriptions.Add(audioStreamDescription);
#endif
mediaStreamDescriptions.Add(videoStreamDescription);
this.AudioBufferLength = 500;
this.ReportOpenMediaCompleted(mediaSourceAttributes, mediaStreamDescriptions);
}
private MediaStreamSample GetVideoSample2()
{
//Utility.Trace(" GetVideoSample2 ");
MediaStreamSample sample = new MediaStreamSample(this.videoStreamDescription, null, 0, 0, 0, emptyDict);
if (m_VmediaStreamEnd)
{
Utility.Trace(" GetVideoSample2 NULL stream has been sent!");
return sample;
}
if (vIdx > (fNum - 1))
{
// free current video block and request for next video block
m_curVideoBlk = null;
Utility.Trace(" GetVideoSample,m_vbuffer WaitForWorkItem ");
m_vbuffer.WaitForWorkItem();
Utility.Trace(" GetVideoSample,m_vbuffer Got an Item ");
m_curVideoBlk = (MSF.VideoBlock)m_vbuffer.Dequeue().CommandParameter;
if (m_curVideoBlk != null)
{
Utility.Trace(String.Format(" GetVideoSample,m_vbuffer.count = {0} ", m_vbuffer.Count()));
if (m_vbuffer.Count() == 0)
m_vBufferFullEvent.Reset();
vIdx = 0;
fNum = (int)m_curVideoBlk.VideoFrameNum;
}
else
{
m_VmediaStreamEnd = true;
Utility.Trace(" GetVideoSample2 NULL stream has been sent!");
return sample;
}
}
MemoryStream vStream = new MemoryStream();
int len = (int)m_curVideoBlk.vFrames[vIdx].Length;
vStream.Write(m_curVideoBlk.vFrames[vIdx]._data, 0, len);
MediaStreamSample mediaStreamSample = new MediaStreamSample
(
this.videoStreamDescription,
vStream,
0,
len,
m_curVideoBlk.vFrames[vIdx].RelativeTime, //// 以100 纳秒为单位
emptyDict
);
vIdx++;
return mediaStreamSample;
}
protected override void OpenMediaAsync()
{
//WaveFormatEx
HeAacWaveFormat aacf = new HeAacWaveFormat();
WaveFormatExtensible wfx = new WaveFormatExtensible();
aacf.WaveFormatExtensible = wfx;
aacf.WaveFormatExtensible.FormatTag = 0x1610; //0xFF;//0x1610;
aacf.WaveFormatExtensible.Channels = 2; //
aacf.WaveFormatExtensible.BlockAlign = 1;
aacf.WaveFormatExtensible.BitsPerSample = 0;//16; //unkonw set to 0
aacf.WaveFormatExtensible.SamplesPerSec = 24000; // from 8000 to 96000 Hz
aacf.WaveFormatExtensible.AverageBytesPerSecond = 0;//wfx.SamplesPerSec * wfx.Channels * wfx.BitsPerSample / wfx.BlockAlign;
aacf.WaveFormatExtensible.Size = 12;
// Extra 3 words in WAVEFORMATEX
// refer to http://msdn.microsoft.com/en-us/library/windows/desktop/dd757806(v=vs.85).aspx
aacf.wPayloadType = 0x0; //Audio Data Transport Stream (ADTS). The stream contains an adts_sequence, as defined by MPEG-2.
aacf.wAudioProfileLevelIndication = 0xFE;
aacf.wStructType = 0;
string codecPrivateData = aacf.ToHexString();
Dictionary<MediaStreamAttributeKeys, string> audioStreamAttributes = new Dictionary<MediaStreamAttributeKeys, string>();
audioStreamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = codecPrivateData;
audioStreamDescription = new MediaStreamDescription(MediaStreamType.Audio, audioStreamAttributes);
m_vbuffer.WaitForWorkItem();
m_curVideoBlk = m_vbuffer.Dequeue().CommandParameter as MSF.VideoBlock;
if (m_curVideoBlk == null)
return;
vIdx = 0;
fNum = (int)m_curVideoBlk.VideoFrameNum;
H264NalFormat h264f = new H264NalFormat();
h264f.sps = m_curVideoBlk.FirstIFrameInfo.sps;
h264f.pps = m_curVideoBlk.FirstIFrameInfo.pps;
string s = h264f.ToHexString();
//Video
Dictionary<MediaStreamAttributeKeys, string> videoStreamAttributes = new Dictionary<MediaStreamAttributeKeys, string>();
videoStreamAttributes[MediaStreamAttributeKeys.VideoFourCC] = "H264";
videoStreamAttributes[MediaStreamAttributeKeys.Height] = "240";
videoStreamAttributes[MediaStreamAttributeKeys.Width] = "320";
videoStreamAttributes[MediaStreamAttributeKeys.CodecPrivateData] = s;//"0000016742E00D96520283F40500000168CE388000";
videoStreamDescription = new MediaStreamDescription(MediaStreamType.Video, videoStreamAttributes);
//Media
Dictionary<MediaSourceAttributesKeys, string> mediaSourceAttributes = new Dictionary<MediaSourceAttributesKeys, string>();
mediaSourceAttributes[MediaSourceAttributesKeys.Duration] = TimeSpan.FromSeconds(6).Ticks.ToString(CultureInfo.InvariantCulture);
mediaSourceAttributes[MediaSourceAttributesKeys.CanSeek] = "0";
List<MediaStreamDescription> mediaStreamDescriptions = new List<MediaStreamDescription>();
#if !DEBUG
// Emulator does not support HE-AAC
mediaStreamDescriptions.Add(audioStreamDescription);
#endif
mediaStreamDescriptions.Add(videoStreamDescription);
this.AudioBufferLength = 500;
this.ReportOpenMediaCompleted(mediaSourceAttributes, mediaStreamDescriptions);
}
public MSF.VideoBlock ParseVideoBlock(int offset, Stream _stream)
{
_stream.Seek(offset, SeekOrigin.Begin);
byte[] tmp = new byte[4];
MSF.VideoBlock vb = new MSF.VideoBlock();
_stream.Read(tmp, 0, 2);
vb.VideoBlockHeaderLength = (uint)BitTools.MaskBits(tmp, 0, 12);
//计算有多少个视频帧, 每个视频参数集 5byte
vb.VideoFrameNum = vb.VideoBlockHeaderLength / 5;
uint addr = (uint)offset + vb.VideoBlockHeaderLength + CRC_Size;
for (int i = 0; i < vb.VideoFrameNum; i++)
{
MSF.VideoBlock.VideoFrame f = new MSF.VideoBlock.VideoFrame();
//本段视频的开始地址
f.RelativeStartAddr = addr;
// 视频段长度
_stream.Read(tmp, 0, 2);
f.Length = (uint)BitTools.MaskBits(tmp, 0, 16);
// 帧类型，I帧 or P帧
_stream.Read(tmp, 0, 1);
f.FrameMode = (uint)BitTools.MaskBits(tmp, 0, 3);
if (vb.FirstIFrameIdx == -1 && f.FrameMode ==0)
{
vb.FirstIFrameIdx = i;
}
// 相对播放时间
if (BitTools.MaskBits(tmp, 7, 1) == 1) //相对时间提示
{
_stream.Read(tmp, 0, 2);
f.RelativeTime = BitTools.MaskBits(tmp, 0, 16) * timeUint;
}
// 本段视频流
//f._vs = BitTools.CopyToNewStream(_stream, (long)f.RelativeStartAddr, (int)f.Length);
BitTools.CopyFromStreamToBytesArray(_stream, (long)f.RelativeStartAddr, (int)f.Length, ref f._data);
vb.vFrames.Add(f);
//下一段视频的开始地址
addr += f.Length;
}
ParseNALHeader(vb);
return vb;
}
public bool ParseNALHeader(MSF.VideoBlock vb)
{
// Need to get the SPS and PPS of the stream, the first frame must be I frame, other frames cannot be played.
if (vb.FirstIFrameIdx == -1)
{
return(false);
}
//有I帧
byte[] tmp = new byte[32];
byte[] NALStartCode = new byte[] { 0x00, 0x00, 0x01 };
List <byte[]> nals = new List <byte[]>();
Stream s = new MemoryStream(); //vb.vFrames[vb.FirstIFrameIdx]._vs;
s.Write(vb.vFrames[vb.FirstIFrameIdx]._data, 0,
(int)vb.vFrames[vb.FirstIFrameIdx].Length);
s.Seek(0, SeekOrigin.Begin);
s.Read(tmp, 0, 3);
if (BitTools.FindBytePattern(tmp, NALStartCode) != 0)
{
return(false);
}
while (true)
{
long pos = s.Position;
s.Read(tmp, 0, 32);
int nextNALidx = BitTools.FindBytePattern(tmp, NALStartCode);
if (nextNALidx == -1)
{
break;
}
byte[] nal = new byte[nextNALidx];
BitTools.CopyToBytesArray(tmp, nal, nextNALidx);
nals.Add(nal);
// rollback pos
pos += nextNALidx + 3; //跳过下一个startcode
s.Seek(pos, SeekOrigin.Begin);
}
s.Close();
vb.FirstIFrameInfo = new MSF.VideoBlock.NAL_SPS_PPS_SEI();
foreach (var v in nals)
{
switch (v[0])
{
case 0x67: //SPS http://www.eefocus.com/czzheng/blog/11-09/230262_65ff0.html
vb.FirstIFrameInfo.sps = new byte[v.Length - 1];
BitTools.CopyToBytesArray(v, 1, vb.FirstIFrameInfo.sps, v.Length - 1);
break;
case 0x68: //PPS
vb.FirstIFrameInfo.pps = new byte[v.Length - 1];
BitTools.CopyToBytesArray(v, 1, vb.FirstIFrameInfo.pps, v.Length - 1);
break;
case 0x06: // SEI
vb.FirstIFrameInfo.sei = new byte[v.Length - 1];
BitTools.CopyToBytesArray(v, 1, vb.FirstIFrameInfo.sei, v.Length - 1);
break;
default:
break;
}
}
return(true);
}
