public void ExecuteBlack(double rate, double time, string outputfilename)
{
if (_parser == null)
{
return;
}
double o_rate = _parser.Rate;
if (o_rate < rate)
{
// 不需要转换
//此视频不需要转换 后黑
return;
}
long filesize = _parser.Length + 16;
double duration;
if (time < 0)
{
// 计算傲娇时间
duration = filesize / 125.0 / rate; // * 8 / 1000 / rate
}
else
{
duration = _parser.Duration / 1000.0 + time;
}
string offset = ((duration * 1000 - _parser.Duration) / 1000).ToString("0.000");
//开始处理后黑
Stream src = new FileStream(_filename, FileMode.Open);
string path = outputfilename;
Stream dest = new FileStream(path, FileMode.Create);
WriteHead(dest, filesize, duration, -1, -1, -1, 1.0, 0,
0, _parser.Tags.Count - 1, false);
for (int i = 1; i < _parser.Tags.Count; i++)
{
src.Seek(_parser.Tags[i].Offset - 11, SeekOrigin.Begin);
FlvParser.FlvTag tag = _parser.Tags[i];
byte[] bs = new byte[tag.DataSize + 11];
// 数据
src.Read(bs, 0, bs.Length);
dest.Write(bs, 0, bs.Length);
// prev tag size
src.Read(bs, 0, 4);
dest.Write(bs, 0, 4);
}
src.Close();
src.Dispose();
byte[] buffer = new byte[] {
0x09, 0, 0, 0x01, // 视频帧 1 字节
0, 0, 0, 0, // 04h, timestamp & ex
0, 0, 0, // stream id
0x17, // InnerFrame, H.264
0, 0, 0, 0x0c // 此帧长度 12 字节
};
uint dur = (uint)(duration * 1000);
PutTime(buffer, 0x04, dur);
dest.Write(buffer, 0, buffer.Length);
dest.Flush();
dest.Close();
dest.Dispose();
}
public void ExecuteTime(double rate, double time, string outputfilename)
{
if (_parser == null)
{
return;
}
double o_rate = _parser.Rate;
if (o_rate < rate)
{
// 不需要转换
return;
}
long filesize = _parser.Length;
if (rate < 0)
{
filesize += 27;
}
uint offset;
double duration;
if (time < 0)
{
// 计算傲娇时间
duration = filesize / 125.0 / rate; // * 8 / 1000 / rate
offset = (uint)(duration * 1000 - _parser.Duration);
//o_rate = rate;
}
else
{
duration = _parser.Duration / 1000.0 + time;
offset = (uint)(time * 1000);
//o_rate = filesize / 125.0 / duration;
}
string offstr = (offset / 1000.0).ToString("0.000");
//开始处理傲娇
Stream src = new FileStream(_filename, FileMode.Open);
string path = outputfilename;
Stream dest = new FileStream(path, FileMode.Create);
WriteHead(dest, filesize, duration, 2.0, 2.0, -1, 1.0, 0 - offset,
0, _parser.Tags.Count - 1, (rate < 0));
// 傲娇的话才插入新帧
if (rate < 0)
{
ushort width = 512, height = 384;
//try
//{
// string[] ss = toolComboFrame.Text.Split('x');
// if (ss.Length == 2)
// {
// width = ushort.Parse(ss[0]);
// height = ushort.Parse(ss[1]);
// }
//}
//catch { }
byte[] buffer = GetH263Frame(0, width, height);
dest.Write(buffer, 0, buffer.Length);
}
//WriteDataStream(src, parser.Tags[1].Offset - 11, dest);
bool flag = true;
for (int i = 1; i < _parser.Tags.Count; i++)
{
src.Seek(_parser.Tags[i].Offset - 11, SeekOrigin.Begin);
FlvParser.FlvTag tag = _parser.Tags[i];
byte[] bs = new byte[tag.DataSize < 4 ? 4 : tag.DataSize];
src.Read(bs, 0, 4);
dest.Write(bs, 0, 4);
// 时间戳
uint t = tag.TimeStamp;
if (flag)
{
FlvParser.VideoTag vtag = tag as FlvParser.VideoTag;
if (time < 0)
{
// 无傲娇进度条
if ((vtag != null) && (vtag.AVCPacketType == 1))
{
t += offset;
flag = false;
}
else
{
t = 0;
}
}
else
{
// 傲娇
if (vtag != null)
{
if (vtag.FrameType == "keyframe")
{
flag = false;
}
t = 0;
}
else
{
t += offset;
}
}
}
else
{
t += offset;
}
PutTime(bs, 0, t);
dest.Write(bs, 0, 4); // timestamp
// 继续的数据
src.Seek(4, SeekOrigin.Current);
src.Read(bs, 0, 3); // streamid
dest.Write(bs, 0, 3);
src.Read(bs, 0, tag.DataSize);
dest.Write(bs, 0, tag.DataSize);
// prev tag size
src.Read(bs, 0, 4);
dest.Write(bs, 0, 4);
}
src.Close();
src.Dispose();
dest.Flush();
dest.Close();
dest.Dispose();
}
