private void AudioEncoding()
{
//skip start_time if IsExplicitTimeRange=true
int calc_start_time = 0, calc_end_time = (int)MusicPlayerManager.ActivityPlayer.Length;
if (option.IsExplicitTimeRange)
{
calc_end_time = option.EndTime;
calc_start_time = option.StartTime;
while (audio_reader.NextFrame(audio_frame, audio_decoder.StreamIndex))
{
pos = audio_reader.Position.TotalMilliseconds;
if (pos >= option.StartTime)
{
break;
}
}
}
while (writer != null)
{
if (pos >= MusicPlayerManager.ActivityPlayer.CurrentTime)
{
continue;
}
if (!audio_reader.NextFrame(audio_frame, audio_decoder.StreamIndex))
{
break;
}
pos = audio_reader.Position.TotalMilliseconds;
if (option.IsExplicitTimeRange && (pos < option.StartTime || pos > option.EndTime))
{
break;
}
lock (this)
{
writer.Write(audio_frame);
}
Log.Debug($"{audio_encoder.FullName} ---> ({audio_encoder.InputFrames}) {audio_encoder.InputTimestamp}");
}
Log.User($"Finish audio encoding...");
}
static void Main(string[] args)
{
var media = new MediaReader(@"Z:\【神之超赛】来自深渊+01话.mp4");
var decoder = media.Decoders.OfType <VideoDecoder>().First();
decoder.OutFormat = new VideoFormat(decoder.InFormat.Width, decoder.InFormat.Height, AVPixelFormat.Bgr24, 4);
VideoFrame frame = new VideoFrame();
for (int i = 0; i < 10; i++)
{
if (media.NextFrame(frame, decoder.StreamIndex))
{
Bitmap image = new Bitmap(frame.Format.Width, frame.Format.Height, frame.Format.Strides[0], PixelFormat.Format24bppRgb, frame.Scan0);
image.Save($@"Z:\{i}.png");
}
}
}
public override void Execute(byte[] bytes)
{
if (bytes.Length == 0)
{
return;
}
var aa = Thread.CurrentThread.ManagedThreadId.ToString();
Console.WriteLine($"DecodeDataImpl {aa} ==> {bytes.Length}");
if (null == stream)
{
stream = new MemoryStream();
}
else
{
try
{
stream.Seek(0, SeekOrigin.Begin);
}
catch (Exception ex)
{
stream = new MemoryStream();
Console.WriteLine($"Execute {ex.ToString()}");
}
}
stream.Write(bytes, 0, bytes.Length);
stream.Seek(0, SeekOrigin.Begin);
if (null == media)
{
media = new MediaReader(stream);
decoder = media.Decoders.OfType <VideoDecoder>().First();
decoder.OutFormat = new VideoFormat(decoder.InFormat.Width, decoder.InFormat.Height, AVPixelFormat.Bgr24, 4);
}
if (null == frame)
{
frame = new VideoFrame();
}
if (media.NextFrame(frame, decoder.StreamIndex))
{
Bitmap image = new Bitmap(frame.Format.Width, frame.Format.Height, frame.Format.Strides[0], PixelFormat.Format24bppRgb, frame.Scan0);
ImgMgr.Get().SetImg("live.png", image);
}
}
unsafe static void Main(string[] args)
{
using (var reader = new MediaReader(@"D:\MyDocuments\Music\HEALTH\04 21世紀難民 feat. れをる(from REOL).m4a")) {
var decoder = reader.Decoders.OfType <AudioDecoder>().First();
var frame = new AudioFrame();
using (var writer = new MediaWriter(@"D:\test.flac").AddAudio(decoder.OutFormat, BitRate.Zero).Initialize()) {
var enc = writer.Encoders[0] as AudioEncoder;
while (reader.NextFrame(frame, decoder.StreamIndex))
{
var pos = reader.Position;
writer.Write(frame);
Console.Write($"\rframes: {enc.InputFrames}, time: {enc.InputTimestamp}");
}
writer.Flush();
Console.WriteLine($"\rframes: {enc.InputFrames}, time: {enc.InputTimestamp}");
}
}
}
unsafe static void Main(string[] args)
{
using (var reader = new MediaReader(@"D:\MyDocuments\Music\夕立のりぼん+inst（NoMastering）_island__201411091428.mp3")) {
var decoder = reader.Decoders.OfType <AudioDecoder>().First();
var frame = new AudioFrame();
using (var writer = new MediaWriter(@"D:\MyDocuments\Music\夕立のりぼん+inst（NoMastering）_island__201411091428-output.mp3").AddAudio(decoder.OutFormat, BitRate._320Kbps).Initialize()) {
var enc = writer.Encoders[0] as AudioEncoder;
while (reader.NextFrame(frame, decoder.StreamIndex))
{
var pos = reader.Position;
writer.Write(frame);
Console.Write($"\rframes: {enc.InputFrames}, time: {enc.InputTimestamp}");
}
writer.Flush();
Console.WriteLine($"\rframes: {enc.InputFrames}, time: {enc.InputTimestamp}");
}
}
}
public int Read(byte[] buffer, int start, int length)
{
if (over == 0)
{
if (!media.NextFrame(frame, decoder.StreamIndex))
{
Position = TimeSpan.Zero;
return(0);
}
frame.ToPacked();
over = frame.TotalBytes;
}
int writeLength = Math.Min(over, length);
Marshal.Copy(frame.Data[0] + frame.TotalBytes - over, buffer, start, writeLength);
over -= writeLength;
return(writeLength);
}
static void Main(string[] args)
{
var httpRequest = WebRequest.CreateHttp("https://txy.live-play.acgvideo.com/live-txy/148029/live_16159326_5264177.flv?wsSecret=f120730be328d6c1bdbe50dc42f1fc65&wsTime=1510802458");
httpRequest.Method = "GET";
var httpResponse = httpRequest.GetResponse() as HttpWebResponse;
var reader = new MediaReader(httpResponse.GetResponseStream());
var decoder = reader.Decoders.OfType <VideoDecoder>().First();
decoder.OutFormat = new VideoFormat(decoder.InFormat.Width, decoder.InFormat.Height, AVPixelFormat.Bgr24, 4);
var frame = new VideoFrame();
for (int i = 0; i < 100; i++)
{
reader.NextFrame(frame, decoder.StreamIndex);
var bitmap = new Bitmap(frame.Format.Width, frame.Format.Height, frame.Format.Strides[0], System.Drawing.Imaging.PixelFormat.Format24bppRgb, frame.Scan0);
bitmap.Save($@"Z:\{i}.png");
}
}
static void Main(string[] args)
{
var reader = new MediaReader(@"G:\请问您今天来点兔子吗\[Hakugetsu&VCB-Studio]Gochuumon wa Usagi Desuka[1080p]\[Hakugetsu&VCB-Studio]Gochuumon wa Usagi Desuka[01][Hi10p_1080p][x264_2flac].mkv");
var decoder = reader.Decoders.OfType <VideoDecoder>().First();
decoder.OutFormat = new VideoFormat(
decoder.InFormat.Width,
decoder.InFormat.Height,
AVPixelFormat.Yuv420p);
VideoFrame frame = new VideoFrame();
for (int i = 0; i < 10; i++)
{
if (reader.NextFrame(frame, decoder.StreamIndex))
{
var writer = File.OpenWrite($@"Z:\{i}.yuv");
Write(writer, frame.Data[0], frame.Format.Strides[0] * frame.Format.Height);
Write(writer, frame.Data[1], frame.Format.Strides[1] * frame.Format.Height / 2);
Write(writer, frame.Data[2], frame.Format.Strides[2] * frame.Format.Height / 2);
writer.Close();
}
}
}
unsafe static void Main(string[] args)
{
const double MinimumFrequency = 10;
const double MaximumFrequency = 20000;
const double MaxDB = 65;
const int fftSize = 4192 * 6;
var reader = new MediaReader(@"D:\CloudMusic\MAN WITH A MISSION - My Hero.mp3");
var decoder = reader.Decoders.OfType <AudioDecoder>().First();
var videoFormat = new VideoFormat(1280, 720, AVPixelFormat.Rgb0);
var writer = new MediaWriter(@"D:\CloudMusic\MAN WITH A MISSION - My Hero-fft.mkv")
.AddEncoder(new VideoEncoder(AVCodecID.H264, videoFormat, new VideoEncoderParameters {
FrameRate = new Fraction(30), GopSize = 10
}))
.AddEncoder(new AudioEncoder(AVCodecID.Mp3, decoder.InFormat))
//.AddVideo(videoFormat, new VideoEncoderParameters { FrameRate = new Fraction(30), GopSize = 10 })
//.AddAudio(decoder.InFormat)
.Initialize();
int sampleRate = decoder.InFormat.SampleRate;
int channels = decoder.InFormat.Channels;
var resampler = new AudioResampler(decoder.InFormat, new AudioFormat(sampleRate, channels, 64));
var inFrame = new AudioFrame();
var outFrame = new AudioFrame();
var image = new VideoFrame(videoFormat);
var viewHeight = videoFormat.Height / 2;
var observer = new StreamObserver <double>(fftSize * 2, fftSize / 6, 2);
var fft = DoubleFFT.Create(fftSize);
var inFFT = fft.AllocInput();
var outFFT = fft.AllocOutput();
var cutLength = FFTTools.CutFrequencyLength(fftSize, MinimumFrequency, MaximumFrequency, sampleRate, fft.FFTComplexCount);
var cutFFT = Marshal.AllocHGlobal(cutLength * sizeof(double));
var outFFT2 = Marshal.AllocHGlobal(fft.FFTComplexCount * sizeof(double));
var outFFTFinal = Marshal.AllocHGlobal(viewHeight * sizeof(double));
var window = new BlackmanHarrisWindow(fftSize);
var log = new Spectrum3DLog();
void FFT()
{
window.Apply((double *)inFFT, (double *)inFFT);
fft.Execute(inFFT, outFFT);
FFTTools.Abs(fftSize, (double *)outFFT, (double *)outFFT2);
FFTTools.CutFrequency(fftSize, (double *)outFFT2, fft.FFTComplexCount, MinimumFrequency, MaximumFrequency, sampleRate, (double *)cutFFT, cutLength);
FFTTools.Logarithm((double *)cutFFT, cutLength, MinimumFrequency, MaximumFrequency, (double *)outFFTFinal, viewHeight, log);
FFTTools.ToDB((double *)outFFTFinal, viewHeight, MaxDB);
FFTTools.Scale((double *)outFFTFinal, viewHeight, 1 / MaxDB);
}
void LeftShiftImage()
{
int w = image.Format.Width - 1;
int h = image.Format.Height;
for (int y = 0; y < h; y++)
{
var p = (uint *)(image.Data[0] + image.Format.Strides[0] * y);
for (int x = 0; x < w; x++)
{
p[x] = p[x + 1];
}
}
}
observer.Completed += data => {
LeftShiftImage();
int w = image.Format.Width - 1;
int h = image.Format.Height;
var p = (byte *)((uint *)image.Data[0] + w);
var stride = image.Format.Strides[0];
for (int i = 0; i < fftSize; i++)
{
((double *)inFFT)[i] = ((double *)data)[2 * i];
}
FFT();
for (int y = 0; y < viewHeight; y++, p += stride)
{
var val = ((double *)outFFTFinal)[viewHeight - y - 1] * 256;
if (val < 0)
{
val = 0;
}
else if (val > 255)
{
val = 255;
}
p[0] = p[1] = p[2] = (byte)val;
}
for (int i = 0; i < fftSize; i++)
{
((double *)inFFT)[i] = ((double *)data)[2 * i + 1];
}
FFT();
for (int y = 0; y < viewHeight; y++, p += stride)
{
var val = ((double *)outFFTFinal)[viewHeight - y - 1] * 256;
if (val < 0)
{
val = 0;
}
else if (val > 255)
{
val = 255;
}
p[0] = p[1] = p[2] = (byte)val;
}
};
bool end = false, run = true;
while (run)
{
writer.Write(encoder => {
switch (encoder)
{
case AudioEncoder audioEncoder:
Console.Write($"\r{audioEncoder.InputTimestamp}");
if (reader.NextFrame(inFrame, decoder.StreamIndex))
{
resampler.Resample(inFrame, outFrame);
observer.Write(outFrame.Data[0], outFrame.SampleCount * channels);
return(inFrame);
}
else
{
resampler.ResampleFinal(outFrame);
observer.Write(outFrame.Data[0], outFrame.SampleCount * channels);
end = true;
Console.WriteLine($"\r{audioEncoder.InputTimestamp}");
return(null);
}
case VideoEncoder videoEncoder:
if (end)
{
run = false;
}
return(image);
default:
throw new NotImplementedException();
}
});
}
writer.Dispose();
}
static void Main(string[] args)
{
var media = new MediaReader(@"D:\MyDocuments\Videos\bandicam 2018-05-07 20-38-22-722.mp4");
var decoder = media.Decoders.OfType <VideoDecoder>().First();
decoder.OutFormat = new VideoFormat(decoder.InFormat.Width, decoder.InFormat.Height, AVPixelFormat.Bgr24, 4);
VideoFrame frame = new VideoFrame();
for (int i = 0; i < 100; i++)
{
if (media.NextFrame(frame, decoder.StreamIndex))
{
Bitmap image = new Bitmap(frame.Format.Width, frame.Format.Height, frame.Format.Strides[0], PixelFormat.Format24bppRgb, frame.Scan0);
image.Save($@"D:\MyDocuments\Videos\{i}.png");
}
}
//AVFormatContext* formatCtx = null;
//const string filename = @"D:\MyDocuments\Music\虾米音乐\Cyua-Blumenkranz.mp3";
//FF.avformat_open_input(&formatCtx, filename, null, null).CheckFFmpegCode();
//FF.avformat_find_stream_info(formatCtx, null);
//AVCodec* codec;
//int index = FF.av_find_best_stream(formatCtx, AVMediaType.Audio, -1, -1, &codec, 0).CheckFFmpegCode();
//AVStream* stream = formatCtx->Streams[index];
//// var codec = FF.avcodec_find_decoder(stream->Codecpar->CodecId);
//var parser = FF.av_parser_init(codec->Id);
//var codecCtx = FF.avcodec_alloc_context3(codec);
//FF.avcodec_parameters_to_context(codecCtx, stream->Codecpar);
//Debug.Print(*stream->Codecpar);
//FF.avcodec_open2(codecCtx, codec, null).CheckFFmpegCode();
//// FF.av_dump_format(formatCtx, 0, filename, false);
//var frame = FF.av_frame_alloc();
//AVPacket packet;
//FF.av_init_packet(&packet);
//packet.Data = null;
//packet.Size = 0;
//void decode_packet(AVPacket* _packet) {
// int r = FF.avcodec_send_packet(codecCtx, _packet).CheckFFmpegCode();
// AVRational rational = codecCtx->PktTimebase;
// while (r >= 0) {
// r = FF.avcodec_receive_frame(codecCtx, frame);
// switch (r) {
// case var _ when r == Error.EAGAIN.AVError():
// Console.Write('.');
// return;
// case (int)AVError.Eof:
// Console.WriteLine("EOF");
// return;
// case var _ when r < 0:
// throw new FFmpegException(r);
// }
// Console.Write('!');
// }
//}
//while (FF.av_read_frame(formatCtx, &packet) >= 0) {
// if (packet.StreamIndex == index) {
// decode_packet(&packet);
// }
// FF.av_packet_unref(&packet);
//}
//decode_packet(null);
}
