Nekojimi
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Chords
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WIP: initial work on streaming instead of downloading.

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master
Nekojimi 9 months ago
parent c8684dbe75
commit 6759afe76b
2 changed files with 125 additions and 85 deletions
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  1. 106
      src/main/java/moe/nekojimi/chords/Downloader.java
  2. 20
      src/main/java/moe/nekojimi/chords/TrackPlayer.java

106
src/main/java/moe/nekojimi/chords/Downloader.java
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@ -5,10 +5,8 @@
*/ */
package moe.nekojimi.chords; package moe.nekojimi.chords;
import java.io.File; import com.beust.jcommander.Strings;
import java.io.IOException; import java.io.*;
import java.io.InputStream;
import java.io.StringReader;
import java.nio.charset.Charset; import java.nio.charset.Charset;
import java.nio.file.Files; import java.nio.file.Files;
import java.util.*; 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 int BITRATE_TARGET = (int) AudioSendHandler.INPUT_FORMAT.getSampleRate();
private static final Pattern FORMAT_PATTERN = Pattern.compile("^([\\w]+)\\s+([\\w]+)\\s+(\\w+ ?\\w*)\\s+(.*)$"); private static final Pattern FORMAT_PATTERN = Pattern.compile("^([\\w]+)\\s+([\\w]+)\\s+(\\w+ ?\\w*)\\s+(.*)$");
public static final Pattern DESTINATION_PATTERN = Pattern.compile("Destination: (.*\\.wav)"); public static final Pattern 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\\.]+)%"); 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 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})"); 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); getInfo(request);
download(promise); boolean streamOutput = request.getTracks().size() == 1;
download(promise, streamOutput);
} catch (Exception ex) } catch (Exception ex)
{ {
ex.printStackTrace(); ex.printStackTrace();
@ -157,8 +157,8 @@ public class Downloader extends QueueThing<TrackRequest, Track>
return; return;
try try
{ {
String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download -F " + track.getUrl().toString(); // String cmd = + " --skip-download -F " + track.getUrl().toString();
Process exec = runCommand(cmd, FORMAT_TIMEOUT); Process exec = runCommand(List.of(Chords.getSettings().getYtdlCommand(), "--skip-download", "-F", track.getUrl().toString()), FORMAT_TIMEOUT);
InputStream input = exec.getInputStream(); InputStream input = exec.getInputStream();
String output = new String(input.readAllBytes(), Charset.defaultCharset()); String output = new String(input.readAllBytes(), Charset.defaultCharset());
@ -231,8 +231,8 @@ public class Downloader extends QueueThing<TrackRequest, Track>
List<Track> ret = new ArrayList<>(); List<Track> ret = new ArrayList<>();
try try
{ {
String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + request.getUrl().toString(); // String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + request.getUrl().toString();
Process exec = runCommand(cmd, INFO_TIMEOUT); Process exec = runCommand(List.of(Chords.getSettings().getYtdlCommand(), "--skip-download", "--print-json", request.getUrl().toString()), INFO_TIMEOUT);
InputStream input = exec.getInputStream(); InputStream input = exec.getInputStream();
// read each line as JSON, turn each into a track object // 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); 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(); TrackRequest request = promise.getInput();
Set<Format> uniqueFormats = new HashSet<>(); Set<Format> uniqueFormats = new HashSet<>();
@ -351,20 +351,61 @@ public class Downloader extends QueueThing<TrackRequest, Track>
try try
{ {
messageHandler.accept(request, null); messageHandler.accept(request, null);
String cmd = Chords.getSettings().getYtdlCommand() List<String> cmd = new ArrayList<>();
+ " -x" cmd.add(Chords.getSettings().getYtdlCommand());
+ " -f " + formatCodes + "worstaudio/bestaudio/worst/best" cmd.add("-x");
+ " --audio-format=wav" cmd.add("-f=" + formatCodes + "worstaudio/bestaudio/worst/best");
+ " --no-playlist" cmd.add("--audio-format=wav");
// + " --extractor-args youtube:player_client=android" cmd.add("--no-playlist");
+ " -N 8" // cmd.add(" --extractor-args youtube:player_client=android";
+ " -o " + getDownloadDir().getAbsolutePath() + "/%(title)s.%(ext)s " cmd.add("-N8");
+ request.getUrl().toString(); if (streamOutput)
{
Process exec = runCommand(cmd, DOWNLOAD_TIMEOUT); cmd.add("--downloader=ffmpeg"); // download using FFMpeg
InputStream in = exec.getInputStream(); cmd.add("--downloader-args=ffmpeg:-f wav -c:a pcm_s16le"); // tell FFMpeg to convert to wav
cmd.add("-o"); // output to stdout
Scanner sc = new Scanner(in); cmd.add("-");
} else
{
cmd.add("-o " + getDownloadDir().getAbsolutePath() + "/%(title)s.%(ext)s");
}
cmd.add(request.getUrl().toString());
Process exec = runCommand(cmd, streamOutput ? 0 : DOWNLOAD_TIMEOUT);
if (streamOutput)
{
Scanner sc = new Scanner(exec.getErrorStream());
while (sc.hasNextLine())
{
String line = sc.nextLine();
System.out.println(line);
Matcher streamMatcher = STREAM_PATTERN.matcher(line);
if (streamMatcher.find())
{
break;
}
}
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()) while (sc.hasNextLine())
{ {
String line = sc.nextLine(); String line = sc.nextLine();
@ -374,8 +415,6 @@ public class Downloader extends QueueThing<TrackRequest, Track>
if (itemMatcher.find()) if (itemMatcher.find())
{ {
int idx = Integer.parseInt(itemMatcher.group(1)) - 1; int idx = Integer.parseInt(itemMatcher.group(1)) - 1;
// int total = Integer.parseInt(itemMatcher.group(2));
downloadIdx = idx; downloadIdx = idx;
} }
@ -415,6 +454,7 @@ public class Downloader extends QueueThing<TrackRequest, Track>
{ {
throw new RuntimeException("youtube-dl failed to exit."); throw new RuntimeException("youtube-dl failed to exit.");
} }
}
messageHandler.accept(request, null); messageHandler.accept(request, null);
} catch (Exception ex) } catch (Exception ex)
@ -426,11 +466,12 @@ 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); System.out.println("Running command: " + cmd);
// Process exec = Runtime.getRuntime().exec().split(" ")); Process exec = new ProcessBuilder(cmd).redirectOutput(ProcessBuilder.Redirect.PIPE).redirectError(ProcessBuilder.Redirect.PIPE).start();
Process exec = new ProcessBuilder(cmd.split(" ")).redirectOutput(ProcessBuilder.Redirect.PIPE).redirectError(ProcessBuilder.Redirect.PIPE).start(); if (timeoutSecs > 0)
{
scheduler.schedule(() -> scheduler.schedule(() ->
{ {
if (exec.isAlive()) if (exec.isAlive())
@ -439,12 +480,7 @@ public class Downloader extends QueueThing<TrackRequest, Track>
System.err.println("Process " + cmd + " took too long, killing process."); System.err.println("Process " + cmd + " took too long, killing process.");
} }
}, timeoutSecs, TimeUnit.SECONDS); }, timeoutSecs, TimeUnit.SECONDS);
// boolean done = exec.waitFor(timeoutSecs, TimeUnit.SECONDS); }
// if (!done)
// {
// exec.destroyForcibly();
// throw new RuntimeException("Took too long, giving up.");
// }
return exec; return exec;
} }

20
src/main/java/moe/nekojimi/chords/TrackPlayer.java
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@ -5,6 +5,7 @@
*/ */
package moe.nekojimi.chords; package moe.nekojimi.chords;
import java.io.BufferedInputStream;
import java.io.Closeable; import java.io.Closeable;
import java.io.IOException; import java.io.IOException;
import java.nio.ByteBuffer; import java.nio.ByteBuffer;
@ -39,30 +40,32 @@ public class TrackPlayer implements Closeable
{ {
AudioInputStream in = null; AudioInputStream in = null;
AudioFormat decodedFormat = null; AudioFormat decodedFormat = null;
for (int retry = 0; retry < RETRY_COUNT; retry++) int retry = 0;
while (in == null)
{ {
try try
{ {
in = AudioSystem.getAudioInputStream(track.getInputStream()); in = AudioSystem.getAudioInputStream(new BufferedInputStream(track.getInputStream()));
decodedFormat = AudioSendHandler.INPUT_FORMAT; decodedFormat = AudioSendHandler.INPUT_FORMAT;
break; // it worked! break; // it worked!
} catch (Exception ex) } catch (Exception ex)
{ {
retry++;
if (retry < RETRY_COUNT)
{
System.err.println("Open file " + track.getLocation() + " failed because " + ex.getMessage() + " retry " + retry + "...");
try try
{ {
Thread.sleep(((long) Math.pow(2, retry)) * RETRY_DELAY); Thread.sleep(((long) Math.pow(2, retry)) * RETRY_DELAY);
} catch (InterruptedException ex1) } catch (InterruptedException ex1)
{ {
if (retry < RETRY_COUNT) }
{
System.err.println("Open file " + track.getLocation() + " failed, retry " + retry + "...");
continue;
} else } else
{ {
throw ex; throw ex;
} }
}
} }
} }
input = AudioSystem.getAudioInputStream(decodedFormat, in); input = AudioSystem.getAudioInputStream(decodedFormat, in);
@ -88,7 +91,7 @@ public class TrackPlayer implements Closeable
// throw new OutOfInputException(); // throw new OutOfInputException();
int toRead = Math.min(length, audioBuffer.getCurrentNumberOfBytes()); 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) if (toRead <= 0)
throw new OutOfInputException(); throw new OutOfInputException();
@ -166,6 +169,7 @@ public class TrackPlayer implements Closeable
} }
public static class OutOfInputException extends RuntimeException public static class OutOfInputException extends RuntimeException
{ {

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