/// <summary>
/// 编码首帧音频，即audioTag[0]
/// <para>
/// 注意：本方法已写入<see cref="previousTagSize"/>
/// </para>
/// </summary>
/// <returns></returns>
public byte[] EncoderFirstAudioTag(ulong timestamp)
{
byte[] buffer = FlvArrayPool.Rent(2048);
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
//flv body audio tag
//flv body tag header
FlvTags flvTags = new FlvTags
{
Type = TagType.Audio,
Timestamp = (uint)timestamp,
//flv body tag body
AudioTagsData = new AudioTags(AACPacketType.AudioSpecificConfig)
};
flvMessagePackWriter.WriteUInt32(previousTagSize);
flvMessagePackWriter.WriteFlvTag(flvTags);
var data = flvMessagePackWriter.FlushAndGetArray();
previousTagSize = (uint)(flvTags.DataSize + 11);
return(data);
}
finally
{
FlvArrayPool.Return(buffer);
}
}
private void CreateVideoTagOtherFrame(ref FlvMessagePackWriter flvMessagePackWriter, uint previousTagSize, H264NALU nALU)
{
//flv body PreviousTagSize
flvMessagePackWriter.WriteUInt32(previousTagSize);
//flv body video tag
//flv body tag header
FlvTags flvTags = new FlvTags();
flvTags.Type = TagType.Video;
flvTags.Timestamp = nALU.LastIFrameInterval;
flvTags.TimestampExt = 0;
flvTags.StreamId = 0;
//flv body tag body
flvTags.VideoTagsData = new VideoTags();
if (nALU.NALUHeader.NalUnitType == 5)
{
flvTags.VideoTagsData.FrameType = FrameType.KeyFrame;
}
else
{
flvTags.VideoTagsData.FrameType = FrameType.InterFrame;
}
flvTags.VideoTagsData.VideoData = new AvcVideoPacke();
flvTags.VideoTagsData.VideoData.AvcPacketType = AvcPacketType.Raw;
flvTags.VideoTagsData.VideoData.CompositionTime = nALU.LastIFrameInterval;
flvTags.VideoTagsData.VideoData.Data = nALU.RawData;
flvMessagePackWriter.WriteFlvTag(flvTags);
}
public void Test1()
{
Span <byte> buffer = new byte[1024];
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
AVCDecoderConfigurationRecord aVCDecoderConfigurationRecord = new AVCDecoderConfigurationRecord();
aVCDecoderConfigurationRecord.AVCProfileIndication = 0x64;
aVCDecoderConfigurationRecord.ProfileCompatibility = 0;
aVCDecoderConfigurationRecord.AVCLevelIndication = 0x1F;
aVCDecoderConfigurationRecord.NumOfPictureParameterSets = 1;
aVCDecoderConfigurationRecord.SPSBuffer = new byte[] {
0x67, 0x64, 0x00, 0x1F,
0xAC, 0xD9, 0x40, 0x88,
0x1E, 0x68, 0x40, 0x00,
0x00, 0x03, 0x01, 0x80,
0x00, 0x00, 0x57, 0x83,
0xC6, 0x0C, 0x65, 0x80
};
aVCDecoderConfigurationRecord.PPSBuffer = new byte[] {
0x68, 0xEB, 0xE3, 0xCB, 0x22, 0xC0
};
flvMessagePackWriter.WriteAVCDecoderConfigurationRecord(aVCDecoderConfigurationRecord);
var hexData = flvMessagePackWriter.FlushAndGetArray().ToHexString();
Assert.Equal("0164001FFFE100186764001FACD940881E6840000003018000005783C60C658001000668EBE3CB22C0", hexData);
//0164001FFFE100186764001FACD940881E6840000003018000005783C60C658001000668EBE3CB22C0
//0164001FFFE100186764001FACD940881E6840000003018000005783C60C658001000668EBE3CB22C0
}
/// <summary>
/// 编码脚本Tag
/// </summary>
/// <param name="spsInfo">解析后的sps信息</param>
/// <param name="hasAudio">是否有音频</param>
/// <param name="frameRate">帧率 默认25d 即每秒25帧</param>
/// <returns></returns>
public byte[] EncoderScriptTag(SPSInfo spsInfo, bool hasAudio = false, double frameRate = 25d)
{
byte[] buffer = FlvArrayPool.Rent(1024);
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
//flv body script tag
//flv body tag header
FlvTags flvTags = new FlvTags
{
Type = TagType.ScriptData,
//flv body tag body
DataTagsData = new Amf3
{
Amf3Metadatas = new List <IAmf3Metadata>
{
new Amf3Metadata_Duration {
Value = 0d
},
new Amf3Metadata_VideoDataRate {
Value = 0d
},
new Amf3Metadata_VideoCodecId {
Value = 7d
},
new Amf3Metadata_FrameRate {
Value = frameRate
},
new Amf3Metadata_Width()
{
Value = spsInfo.width
},
new Amf3Metadata_Height()
{
Value = spsInfo.height
},
}
}
};
if (hasAudio)
{
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_AudioCodecId());
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_AudioSampleRate());
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_AudioSampleSize());
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_AudioStereo());
}
flvMessagePackWriter.WriteFlvTag(flvTags);
flvMessagePackWriter.WriteUInt32((uint)(flvTags.DataSize + 11));
return(flvMessagePackWriter.FlushAndGetArray());
}
finally
{
FlvArrayPool.Return(buffer);
}
}
public byte[] CreateFlvFrame(List <H264NALU> nALUs, int minimumLength = 10240)
{
byte[] buffer = FlvArrayPool.Rent(minimumLength);
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
int currentMarkPosition = 0;
int nextMarkPosition = 0;
H264NALU?sps = null, pps = null;
foreach (var naln in nALUs)
{
string key = naln.GetKey();
if (!FrameInitDict.ContainsKey(key))
{
if (naln.NALUHeader.NalUnitType == 7)
{
naln.RawData = H264Decoder.DiscardEmulationPreventionBytes(naln.RawData);
sps = naln;
}
else if (naln.NALUHeader.NalUnitType == 8)
{
pps = naln;
}
if (sps != null && pps != null)
{
flvMessagePackWriter.WriteArray(CreateFlvFirstFrame(sps, pps));
FrameInitDict.TryAdd(key, true);
}
else
{
continue;
}
}
if (PreviousTagSizeDict.TryGetValue(key, out uint previousTagSize))
{
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
CreateVideoTagOtherFrame(ref flvMessagePackWriter, previousTagSize, naln);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
uint tmpPreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
PreviousTagSizeDict.TryUpdate(key, tmpPreviousTagSize, previousTagSize);
}
}
return(flvMessagePackWriter.FlushAndGetArray());
}
finally
{
FlvArrayPool.Return(buffer);
}
}
/// <summary>
/// 编码首帧视频，即videoTag[0]
/// <para>
/// 注意：本方法已写入<see cref="previousTagSize"/>
/// </para>
/// </summary>
/// <param name="sps"></param>
/// <param name="pps"></param>
/// <param name="sei"></param>
/// <returns></returns>
public byte[] EncoderFirstVideoTag(H264NALU sps, H264NALU pps, H264NALU sei)
{
byte[] buffer = FlvArrayPool.Rent(2048);
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
var rawData = h264Decoder.DiscardEmulationPreventionBytes(sps.RawData);
ExpGolombReader h264GolombReader = new ExpGolombReader(rawData);
SPSInfo spsInfo = h264GolombReader.ReadSPS();
//flv body video tag
//flv body tag header
FlvTags flvTags = new FlvTags
{
Type = TagType.Video,
Timestamp = (uint)sps.Timestamp,
TimestampExt = 0,
StreamId = 0,
//flv body tag body
VideoTagsData = new VideoTags()
};
flvTags.VideoTagsData.FrameType = FrameType.KeyFrame;
flvTags.VideoTagsData.VideoData = new AvcVideoPacke
{
AvcPacketType = AvcPacketType.SequenceHeader,
CompositionTime = 0
};
AVCDecoderConfigurationRecord aVCDecoderConfigurationRecord = new AVCDecoderConfigurationRecord
{
AVCProfileIndication = spsInfo.profileIdc,
ProfileCompatibility = (byte)spsInfo.profileCompat,
AVCLevelIndication = spsInfo.levelIdc,
NumOfPictureParameterSets = 1,
PPSBuffer = pps.RawData,
SPSBuffer = sps.RawData
};
flvTags.VideoTagsData.VideoData.AVCDecoderConfiguration = aVCDecoderConfigurationRecord;
flvMessagePackWriter.WriteUInt32(previousTagSize);
flvMessagePackWriter.WriteFlvTag(flvTags);
var data = flvMessagePackWriter.FlushAndGetArray();
previousTagSize = (uint)(flvTags.DataSize + 11);
return(data);
}
finally
{
FlvArrayPool.Return(buffer);
}
}
/// <summary>
///
/// </summary>
/// <param name="sps">NalUnitType->7</param>
/// <param name="pps">NalUnitType->8</param>
/// <returns></returns>
public byte[] CreateFlvFirstFrame(H264NALU sps, H264NALU pps)
{
byte[] buffer = FlvArrayPool.Rent(65535);
int currentMarkPosition = 0;
int nextMarkPosition = 0;
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
//flv header
flvMessagePackWriter.WriteArray(VideoFlvHeaderBuffer);
//SPS -> 7
ExpGolombReader h264GolombReader = new ExpGolombReader(sps.RawData);
var spsInfo = h264GolombReader.ReadSPS();
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body script tag
CreateScriptTagFrame(ref flvMessagePackWriter, spsInfo.width, spsInfo.height);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body video tag
uint scriptTagFramePreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
AVCDecoderConfigurationRecord aVCDecoderConfigurationRecord = new AVCDecoderConfigurationRecord();
aVCDecoderConfigurationRecord.AVCProfileIndication = spsInfo.profileIdc;
aVCDecoderConfigurationRecord.ProfileCompatibility = (byte)spsInfo.profileCompat;
aVCDecoderConfigurationRecord.AVCLevelIndication = spsInfo.levelIdc;
aVCDecoderConfigurationRecord.NumOfPictureParameterSets = 1;
aVCDecoderConfigurationRecord.PPSBuffer = pps.RawData;
aVCDecoderConfigurationRecord.SPSBuffer = sps.RawData;
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
CreateVideoTag0Frame(ref flvMessagePackWriter, scriptTagFramePreviousTagSize, aVCDecoderConfigurationRecord);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body video tag 0
uint videoTag0PreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
//cache PreviousTagSize
PreviousTagSizeDict.AddOrUpdate(sps.GetKey(), videoTag0PreviousTagSize, (a, b) => videoTag0PreviousTagSize);
return(flvMessagePackWriter.FlushAndGetArray());
}
finally
{
FlvArrayPool.Return(buffer);
}
}
public void FlvMessagePackWriter_FlvBody_Test_1()
{
Span <byte> buffer = new byte[1024];
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
FlvBody flvBody = new FlvBody()
{
PreviousTagSize = 0,
Tag = new FlvTags
{
Type = Enums.TagType.ScriptData,
DataSize = 156,
DataTagsData = new Amf3
{
Amf3Metadatas = new List <Flv.Metadata.IAmf3Metadata> {
new Amf3Metadata_Duration {
Value = 7.22100
},
new Amf3Metadata_FileSize {
Value = 2005421.00000
},
new Amf3Metadata_FrameRate {
Value = 29.16667
},
new Amf3Metadata_Height {
Value = 960.00000
},
new Amf3Metadata_VideoCodecId {
Value = 7.00000
},
new Amf3Metadata_VideoDataRate {
Value = 0.00000
},
new Amf3Metadata_Width {
Value = 544.00000
}
}
}
}
};
flvMessagePackWriter.WriteFlvBody(flvBody);
var hex = flvMessagePackWriter.FlushAndGetArray().ToHexString();
Assert.Equal("00000000120000A00000000000000002000A6F6E4D65746144617461080000000700086475726174696F6E00401CE24DD2F1A9FC000866696C6573697A6500413E99AD0000000000096672616D657261746500403D2AAAE297396D000668656967687400408E000000000000000C766964656F636F646563696400401C000000000000000D766964656F646174617261746500000000000000000000057769647468004081000000000000", hex);
}
private void CreateScriptTagFrame(ref FlvMessagePackWriter flvMessagePackWriter, int width, int height)
{
//flv body PreviousTagSize awalys 0
flvMessagePackWriter.WriteUInt32(0);
//flv body script tag
//flv body tag header
FlvTags flvTags = new FlvTags();
flvTags.Type = TagType.ScriptData;
flvTags.Timestamp = 0;
flvTags.TimestampExt = 0;
flvTags.StreamId = 0;
//flv body tag body
flvTags.DataTagsData = new Amf3();
flvTags.DataTagsData.Amf3Metadatas = new List <IAmf3Metadata>();
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_Duration
{
Value = 0d
});
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_VideoDataRate
{
Value = 0d
});
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_VideoCodecId
{
Value = 7d
});
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_FrameRate
{
Value = 25d
});
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_Width
{
Value = width
});
flvTags.DataTagsData.Amf3Metadatas.Add(new Amf3Metadata_Height
{
Value = height
});
flvMessagePackWriter.WriteFlvTag(flvTags);
}
private void CreateVideoTag0Frame(ref FlvMessagePackWriter flvMessagePackWriter, uint previousTagSize, AVCDecoderConfigurationRecord aVCDecoderConfigurationRecord)
{
//flv body PreviousTagSize ScriptTag
flvMessagePackWriter.WriteUInt32(previousTagSize);
//flv body video tag
//flv body tag header
FlvTags flvTags = new FlvTags();
flvTags.Type = TagType.Video;
flvTags.Timestamp = 0;
flvTags.TimestampExt = 0;
flvTags.StreamId = 0;
//flv body tag body
flvTags.VideoTagsData = new VideoTags();
flvTags.VideoTagsData.FrameType = FrameType.KeyFrame;
flvTags.VideoTagsData.VideoData = new AvcVideoPacke();
flvTags.VideoTagsData.VideoData.AvcPacketType = AvcPacketType.SequenceHeader;
flvTags.VideoTagsData.VideoData.CompositionTime = 0;
flvTags.VideoTagsData.VideoData.AVCDecoderConfiguration = aVCDecoderConfigurationRecord;
flvMessagePackWriter.WriteFlvTag(flvTags);
}
/// <summary>
///
/// </summary>
private void CreateFlvKeyFrame(ref FlvMessagePackWriter flvMessagePackWriter, string key, byte[] spsRawData, byte[] ppsRawData, SPSInfo spsInfo, uint previousTagSize = 0)
{
int currentMarkPosition = 0;
int nextMarkPosition = 0;
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body script tag
CreateScriptTagFrame(ref flvMessagePackWriter, spsInfo.width, spsInfo.height, previousTagSize);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body video tag
uint scriptTagFramePreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
AVCDecoderConfigurationRecord aVCDecoderConfigurationRecord = new AVCDecoderConfigurationRecord();
aVCDecoderConfigurationRecord.AVCProfileIndication = spsInfo.profileIdc;
aVCDecoderConfigurationRecord.ProfileCompatibility = (byte)spsInfo.profileCompat;
aVCDecoderConfigurationRecord.AVCLevelIndication = spsInfo.levelIdc;
aVCDecoderConfigurationRecord.NumOfPictureParameterSets = 1;
aVCDecoderConfigurationRecord.PPSBuffer = ppsRawData;
aVCDecoderConfigurationRecord.SPSBuffer = spsRawData;
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
CreateVideoTag0Frame(ref flvMessagePackWriter, scriptTagFramePreviousTagSize, aVCDecoderConfigurationRecord);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
//flv body video tag 0
uint videoTag0PreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
//cache PreviousTagSize
FlvFrameInfoDict.AddOrUpdate(key, new FlvFrameInfo {
PreviousTagSize = videoTag0PreviousTagSize
}, (a, b) => {
b.PreviousTagSize = videoTag0PreviousTagSize;
return(b);
});
}
public void FlvMessagePackWriter_Amf3_Test_1()
{
Span <byte> buffer = new byte[1024];
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
flvMessagePackWriter.WriteAmf3(new Flv.Metadata.Amf3 {
Amf3Metadatas = new List <Flv.Metadata.IAmf3Metadata> {
new Amf3Metadata_Duration {
Value = 7.22100
},
new Amf3Metadata_FileSize {
Value = 2005421.00000
},
new Amf3Metadata_FrameRate {
Value = 29.16667
},
new Amf3Metadata_Height {
Value = 960.00000
},
new Amf3Metadata_VideoCodecId {
Value = 7.00000
},
new Amf3Metadata_VideoDataRate {
Value = 0.00000
},
new Amf3Metadata_Width {
Value = 544.00000
}
}
});
buffer = buffer.Slice(5);//amf3 5个字节
Amf3Metadata_Duration amf3Metadata = new Amf3Metadata_Duration();
amf3Metadata.Value = 7.22100;
var hex = amf3Metadata.ToBuffer().ToArray().ToHexString();
Assert.Equal("00086475726174696F6E00401CE24DD2F1A9FC", buffer.Slice(0, hex.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex.Length / 2);
Amf3Metadata_FileSize amf3Metadata_FileSize = new Amf3Metadata_FileSize();
amf3Metadata_FileSize.Value = 2005421.00000;
var hex1 = amf3Metadata_FileSize.ToBuffer().ToArray().ToHexString();
Assert.Equal("000866696C6573697A6500413E99AD00000000", buffer.Slice(0, hex1.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex1.Length / 2);
Amf3Metadata_FrameRate amf3Metadata_FrameRate = new Amf3Metadata_FrameRate();
amf3Metadata_FrameRate.Value = 29.16667;
var hex2 = amf3Metadata_FrameRate.ToBuffer().ToArray().ToHexString();
Assert.Equal("00096672616D657261746500403D2AAAE297396D", buffer.Slice(0, hex2.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex2.Length / 2);
Amf3Metadata_Height amf3Metadata_Height = new Amf3Metadata_Height();
amf3Metadata_Height.Value = 960.00000;
var hex3 = amf3Metadata_Height.ToBuffer().ToArray().ToHexString();
Assert.Equal("000668656967687400408E000000000000", buffer.Slice(0, hex3.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex3.Length / 2);
Amf3Metadata_VideoCodecId amf3Metadata_VideoCodecId = new Amf3Metadata_VideoCodecId();
amf3Metadata_VideoCodecId.Value = 7.00000;
var hex4 = amf3Metadata_VideoCodecId.ToBuffer().ToArray().ToHexString();
Assert.Equal("000C766964656F636F646563696400401C000000000000", buffer.Slice(0, hex4.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex4.Length / 2);
Amf3Metadata_VideoDataRate amf3Metadata_VideoDataRate = new Amf3Metadata_VideoDataRate();
amf3Metadata_VideoDataRate.Value = 0.00000;
var hex5 = amf3Metadata_VideoDataRate.ToBuffer().ToArray().ToHexString();
Assert.Equal("000D766964656F6461746172617465000000000000000000", buffer.Slice(0, hex5.Length / 2).ToArray().ToHexString());
buffer = buffer.Slice(hex5.Length / 2);
Amf3Metadata_Width amf3Metadata_Width = new Amf3Metadata_Width();
amf3Metadata_Width.Value = 544.00000;
var hex6 = amf3Metadata_Width.ToBuffer().ToArray().ToHexString();
Assert.Equal("00057769647468004081000000000000", buffer.Slice(0, hex6.Length / 2).ToArray().ToHexString());
}
public byte[] CreateFlvFrame(List <H264NALU> nALUs, int minimumLength = 65535)
{
byte[] buffer = FlvArrayPool.Rent(minimumLength);
try
{
FlvMessagePackWriter flvMessagePackWriter = new FlvMessagePackWriter(buffer);
int currentMarkPosition = 0;
int nextMarkPosition = 0;
H264NALU sps = null, pps = null;
SPSInfo spsInfo = new SPSInfo();
foreach (var naln in nALUs)
{
string key = naln.GetKey();
if (sps != null && pps != null)
{
if (VideoSPSDict.TryGetValue(key, out var spsInfoCache))
{
if (spsInfoCache.height != spsInfo.height && spsInfoCache.width != spsInfo.width)
{
if (FlvFrameInfoDict.TryGetValue(key, out FlvFrameInfo flvFrameInfo))
{
CreateFlvKeyFrame(ref flvMessagePackWriter, key, sps.RawData, pps.RawData, spsInfo, flvFrameInfo.PreviousTagSize);
FlvFirstFrameCache.TryRemove(key, out _);
FlvFirstFrameCache.TryAdd(key, flvMessagePackWriter.FlushAndGetArray());
VideoSPSDict.TryUpdate(key, spsInfo, spsInfo);
flvFrameInfo.LastFrameInterval = 0;
FlvFrameInfoDict.TryUpdate(key, flvFrameInfo, flvFrameInfo);
}
}
sps = null;
pps = null;
}
else
{
CreateFlvKeyFrame(ref flvMessagePackWriter, key, sps.RawData, pps.RawData, spsInfo, 0);
FlvFirstFrameCache.TryAdd(key, flvMessagePackWriter.FlushAndGetArray());
VideoSPSDict.TryAdd(key, spsInfo);
sps = null;
pps = null;
}
}
//7 8 6 5 1 1 1 1 7 8 6 5 1 1 1 1 1 7 8 6 5 1 1 1 1 1
switch (naln.NALUHeader.NalUnitType)
{
case 5: // IDR
case 1: // I/P/B
if (FlvFrameInfoDict.TryGetValue(key, out FlvFrameInfo flvFrameInfo))
{
currentMarkPosition = flvMessagePackWriter.GetCurrentPosition();
CreateVideoTagOtherFrame(ref flvMessagePackWriter, flvFrameInfo, naln);
nextMarkPosition = flvMessagePackWriter.GetCurrentPosition();
uint tmpPreviousTagSize = (uint)(nextMarkPosition - currentMarkPosition - PreviousTagSizeFixedLength);
flvFrameInfo.PreviousTagSize = tmpPreviousTagSize;
flvFrameInfo.LastFrameInterval += naln.LastFrameInterval;
FlvFrameInfoDict.TryUpdate(key, flvFrameInfo, flvFrameInfo);
}
break;
case 7: // sps
sps = naln;
var rawData = H264Decoder.DiscardEmulationPreventionBytes(naln.RawData);
ExpGolombReader h264GolombReader = new ExpGolombReader(rawData);
spsInfo = h264GolombReader.ReadSPS();
break;
case 8: // pps
pps = naln;
break;
case 6: //SEI
break;
default:
break;
}
}
return(flvMessagePackWriter.FlushAndGetArray());
}
finally
{
FlvArrayPool.Return(buffer);
}
}