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Chords
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WIP: initial work on streaming instead of downloading.

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master
Nekojimi 8 months ago
parent c8684dbe75
commit 6759afe76b
2 changed files with 125 additions and 85 deletions
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  1. 182
      src/main/java/moe/nekojimi/chords/Downloader.java
  2. 28
      src/main/java/moe/nekojimi/chords/TrackPlayer.java

182
src/main/java/moe/nekojimi/chords/Downloader.java
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@ -5,10 +5,8 @@
*/
package moe.nekojimi.chords;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import com.beust.jcommander.Strings;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.util.*;
@ -40,6 +38,7 @@ public class Downloader extends QueueThing<TrackRequest, Track>
private static final int BITRATE_TARGET = (int) AudioSendHandler.INPUT_FORMAT.getSampleRate();
private static final Pattern FORMAT_PATTERN = Pattern.compile("^([\\w]+)\\s+([\\w]+)\\s+(\\w+ ?\\w*)\\s+(.*)$");
public static final Pattern DESTINATION_PATTERN = Pattern.compile("Destination: (.*\\.wav)");
public static final Pattern STREAM_PATTERN = Pattern.compile("Destination: -");
public static final Pattern PROGRESS_PATTERN = Pattern.compile("\\[download\\].*?([\\d\\.]+)%");
private static final Pattern INFO_JSON_PATTERN = Pattern.compile("Writing video metadata as JSON to: (.*\\.info\\.json)");
private static final Pattern ETA_PATTERN = Pattern.compile("\\[download\\].*?ETA\\s+(\\d{1,2}:\\d{2})");
@ -99,7 +98,8 @@ public class Downloader extends QueueThing<TrackRequest, Track>
{
getInfo(request);
download(promise);
boolean streamOutput = request.getTracks().size() == 1;
download(promise, streamOutput);
} catch (Exception ex)
{
ex.printStackTrace();
@ -157,8 +157,8 @@ public class Downloader extends QueueThing<TrackRequest, Track>
return;
try
{
String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download -F " + track.getUrl().toString();
Process exec = runCommand(cmd, FORMAT_TIMEOUT);
// String cmd = + " --skip-download -F " + track.getUrl().toString();
Process exec = runCommand(List.of(Chords.getSettings().getYtdlCommand(), "--skip-download", "-F", track.getUrl().toString()), FORMAT_TIMEOUT);
InputStream input = exec.getInputStream();
String output = new String(input.readAllBytes(), Charset.defaultCharset());
@ -231,8 +231,8 @@ public class Downloader extends QueueThing<TrackRequest, Track>
List<Track> ret = new ArrayList<>();
try
{
String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + request.getUrl().toString();
Process exec = runCommand(cmd, INFO_TIMEOUT);
// String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + request.getUrl().toString();
Process exec = runCommand(List.of(Chords.getSettings().getYtdlCommand(), "--skip-download", "--print-json", request.getUrl().toString()), INFO_TIMEOUT);
InputStream input = exec.getInputStream();
// read each line as JSON, turn each into a track object
@ -330,7 +330,7 @@ public class Downloader extends QueueThing<TrackRequest, Track>
return request.getTracks().get(idx);
}
private void download(Promise<TrackRequest, Track> promise) throws InterruptedException, ExecutionException
private void download(Promise<TrackRequest, Track> promise, boolean streamOutput) throws InterruptedException, ExecutionException
{
TrackRequest request = promise.getInput();
Set<Format> uniqueFormats = new HashSet<>();
@ -351,69 +351,109 @@ public class Downloader extends QueueThing<TrackRequest, Track>
try
{
messageHandler.accept(request, null);
String cmd = Chords.getSettings().getYtdlCommand()
+ " -x"
+ " -f " + formatCodes + "worstaudio/bestaudio/worst/best"
+ " --audio-format=wav"
+ " --no-playlist"
// + " --extractor-args youtube:player_client=android"
+ " -N 8"
+ " -o " + getDownloadDir().getAbsolutePath() + "/%(title)s.%(ext)s "
+ request.getUrl().toString();
Process exec = runCommand(cmd, DOWNLOAD_TIMEOUT);
InputStream in = exec.getInputStream();
Scanner sc = new Scanner(in);
while (sc.hasNextLine())
List<String> cmd = new ArrayList<>();
cmd.add(Chords.getSettings().getYtdlCommand());
cmd.add("-x");
cmd.add("-f=" + formatCodes + "worstaudio/bestaudio/worst/best");
cmd.add("--audio-format=wav");
cmd.add("--no-playlist");
// cmd.add(" --extractor-args youtube:player_client=android";
cmd.add("-N8");
if (streamOutput)
{
String line = sc.nextLine();
System.out.println(line);
Matcher itemMatcher = DOWNLOAD_ITEM_PATTERN.matcher(line);
if (itemMatcher.find())
{
int idx = Integer.parseInt(itemMatcher.group(1)) - 1;
// int total = Integer.parseInt(itemMatcher.group(2));
cmd.add("--downloader=ffmpeg"); // download using FFMpeg
cmd.add("--downloader-args=ffmpeg:-f wav -c:a pcm_s16le"); // tell FFMpeg to convert to wav
cmd.add("-o"); // output to stdout
cmd.add("-");
} else
{
cmd.add("-o " + getDownloadDir().getAbsolutePath() + "/%(title)s.%(ext)s");
}
cmd.add(request.getUrl().toString());
downloadIdx = idx;
}
Process exec = runCommand(cmd, streamOutput ? 0 : DOWNLOAD_TIMEOUT);
Matcher progMatcher = PROGRESS_PATTERN.matcher(line);
if (progMatcher.find())
if (streamOutput)
{
Scanner sc = new Scanner(exec.getErrorStream());
while (sc.hasNextLine())
{
getTrackFromRequest(request, downloadIdx).setProgress(Double.parseDouble(progMatcher.group(1)));
messageHandler.accept(request, null);
String line = sc.nextLine();
System.out.println(line);
Matcher streamMatcher = STREAM_PATTERN.matcher(line);
if (streamMatcher.find())
{
break;
}
}
Matcher destMatcher = DESTINATION_PATTERN.matcher(line);
if (destMatcher.find())
if (!exec.isAlive() && exec.exitValue() != 0)
throw new RuntimeException("yt-dlp failed with error code " + exec.exitValue());
Track track = getTrackFromRequest(request, 0);
BufferedInputStream inBuf = new BufferedInputStream(exec.getInputStream());
inBuf.mark(128);
final byte[] headerBytes = inBuf.readNBytes(80);
String header = new String(headerBytes);
System.out.println("streaming data header: " + header);
if (!header.startsWith("RIFF"))
throw new RuntimeException("Streaming data has bad header!");
inBuf.reset();
track.setInputStream(inBuf);
promise.complete(track);
track.setProgress(100.0);
messageHandler.accept(request, null);
} else
{
Scanner sc = new Scanner(exec.getInputStream());
while (sc.hasNextLine())
{
Track track = getTrackFromRequest(request, downloadIdx);
String line = sc.nextLine();
System.out.println(line);
track.setLocation(new File(destMatcher.group(1)));
Matcher itemMatcher = DOWNLOAD_ITEM_PATTERN.matcher(line);
if (itemMatcher.find())
{
int idx = Integer.parseInt(itemMatcher.group(1)) - 1;
downloadIdx = idx;
}
// this is currently our criteria for completion; submit the track and move on
promise.complete(track);
Matcher progMatcher = PROGRESS_PATTERN.matcher(line);
if (progMatcher.find())
{
getTrackFromRequest(request, downloadIdx).setProgress(Double.parseDouble(progMatcher.group(1)));
messageHandler.accept(request, null);
}
track.setProgress(100.0);
Matcher destMatcher = DESTINATION_PATTERN.matcher(line);
if (destMatcher.find())
{
Track track = getTrackFromRequest(request, downloadIdx);
messageHandler.accept(request, null);
track.setLocation(new File(destMatcher.group(1)));
downloadIdx++;
// this is currently our criteria for completion; submit the track and move on
promise.complete(track);
track.setProgress(100.0);
messageHandler.accept(request, null);
downloadIdx++;
}
}
}
boolean exited = exec.waitFor(DOWNLOAD_TIMEOUT, TimeUnit.SECONDS);
if (exited)
{
String error = new String(exec.getErrorStream().readAllBytes(), Charset.defaultCharset());
boolean exited = exec.waitFor(DOWNLOAD_TIMEOUT, TimeUnit.SECONDS);
if (exited)
{
String error = new String(exec.getErrorStream().readAllBytes(), Charset.defaultCharset());
if (exec.exitValue() != 0)
throw new RuntimeException("youtube-dl failed with error " + exec.exitValue() + ", output:\n" + error);
} else
{
throw new RuntimeException("youtube-dl failed to exit.");
if (exec.exitValue() != 0)
throw new RuntimeException("youtube-dl failed with error " + exec.exitValue() + ", output:\n" + error);
} else
{
throw new RuntimeException("youtube-dl failed to exit.");
}
}
messageHandler.accept(request, null);
@ -426,25 +466,21 @@ public class Downloader extends QueueThing<TrackRequest, Track>
}
}
private Process runCommand(String cmd, int timeoutSecs) throws RuntimeException, IOException, InterruptedException
private Process runCommand(List<String> cmd, int timeoutSecs) throws RuntimeException, IOException, InterruptedException
{
System.out.println("Running command: " + cmd);
// Process exec = Runtime.getRuntime().exec().split(" "));
Process exec = new ProcessBuilder(cmd.split(" ")).redirectOutput(ProcessBuilder.Redirect.PIPE).redirectError(ProcessBuilder.Redirect.PIPE).start();
scheduler.schedule(() ->
Process exec = new ProcessBuilder(cmd).redirectOutput(ProcessBuilder.Redirect.PIPE).redirectError(ProcessBuilder.Redirect.PIPE).start();
if (timeoutSecs > 0)
{
if (exec.isAlive())
scheduler.schedule(() ->
{
exec.destroyForcibly();
System.err.println("Process " + cmd + " took too long, killing process.");
}
}, timeoutSecs, TimeUnit.SECONDS);
// boolean done = exec.waitFor(timeoutSecs, TimeUnit.SECONDS);
// if (!done)
// {
// exec.destroyForcibly();
// throw new RuntimeException("Took too long, giving up.");
// }
if (exec.isAlive())
{
exec.destroyForcibly();
System.err.println("Process " + cmd + " took too long, killing process.");
}
}, timeoutSecs, TimeUnit.SECONDS);
}
return exec;
}

28
src/main/java/moe/nekojimi/chords/TrackPlayer.java
Unescape View File

@ -5,6 +5,7 @@
*/
package moe.nekojimi.chords;
import java.io.BufferedInputStream;
import java.io.Closeable;
import java.io.IOException;
import java.nio.ByteBuffer;
@ -39,30 +40,32 @@ public class TrackPlayer implements Closeable
{
AudioInputStream in = null;
AudioFormat decodedFormat = null;
for (int retry = 0; retry < RETRY_COUNT; retry++)
int retry = 0;
while (in == null)
{
try
{
in = AudioSystem.getAudioInputStream(track.getInputStream());
in = AudioSystem.getAudioInputStream(new BufferedInputStream(track.getInputStream()));
decodedFormat = AudioSendHandler.INPUT_FORMAT;
break; // it worked!
} catch (Exception ex)
{
try
retry++;
if (retry < RETRY_COUNT)
{
Thread.sleep(((long) Math.pow(2, retry)) * RETRY_DELAY);
} catch (InterruptedException ex1)
{
if (retry < RETRY_COUNT)
System.err.println("Open file " + track.getLocation() + " failed because " + ex.getMessage() + " retry " + retry + "...");
try
{
System.err.println("Open file " + track.getLocation() + " failed, retry " + retry + "...");
continue;
} else
Thread.sleep(((long) Math.pow(2, retry)) * RETRY_DELAY);
} catch (InterruptedException ex1)
{
throw ex;
}
} else
{
throw ex;
}
}
}
input = AudioSystem.getAudioInputStream(decodedFormat, in);
@ -88,7 +91,7 @@ public class TrackPlayer implements Closeable
// throw new OutOfInputException();
int toRead = Math.min(length, audioBuffer.getCurrentNumberOfBytes());
// System.out.println("To read: " + toRead + " from " + audioBuffer.getCurrentNumberOfBytes());
System.out.println("To read: " + toRead + " from " + audioBuffer.getCurrentNumberOfBytes());
if (toRead <= 0)
throw new OutOfInputException();
@ -166,6 +169,7 @@ public class TrackPlayer implements Closeable
}
public static class OutOfInputException extends RuntimeException
{

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