From d31df89c2c152567cdb35bc695f33d131ea885b7 Mon Sep 17 00:00:00 2001
From: tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>
Date: Tue, 18 Dec 2007 04:35:24 +0000
Subject: non_working with portaudio-support

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@723 b956fd51-792f-4845-bead-9b4dfca2ff2c
---
 Game/Code/Classes/UAudio_FFMpeg_Pa.pas | 969 +++++++++++++++++++++++++++++++++
 1 file changed, 969 insertions(+)
 create mode 100644 Game/Code/Classes/UAudio_FFMpeg_Pa.pas

(limited to 'Game')

diff --git a/Game/Code/Classes/UAudio_FFMpeg_Pa.pas b/Game/Code/Classes/UAudio_FFMpeg_Pa.pas
new file mode 100644
index 00000000..a1682e78
--- /dev/null
+++ b/Game/Code/Classes/UAudio_FFMpeg_Pa.pas
@@ -0,0 +1,969 @@
+unit UAudio_FFMpeg;
+
+(*******************************************************************************
+
+This unit is primarily based upon -
+    http://www.dranger.com/ffmpeg/ffmpegtutorial_all.html
+    
+    and tutorial03.c
+
+    http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html
+
+*******************************************************************************)
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+
+uses Classes,
+     {$IFDEF win32}
+     windows,
+     {$ENDIF}
+     Messages,
+     SysUtils,
+     {$IFNDEF FPC}
+     Forms,
+     {$ENDIF}
+     SDL,       // Used for Audio output Interface
+     avcodec,   // FFMpeg Audio file decoding
+     avformat,
+     avutil,
+     ULog,
+     UMusic;
+
+implementation
+
+uses
+     {$IFDEF LAZARUS}
+     lclintf,
+     //libc, // not available in win32
+     {$ENDIF}
+     portaudio,
+     UIni,
+     UMain,
+     UThemes;
+
+
+type
+  PPacketQueue = ^TPacketQueue;
+  TPacketQueue = class
+    private
+      firstPkt,
+      lastPkt    : PAVPacketList;
+      nbPackets  : integer;
+      size       : integer;
+      mutex      : PSDL_Mutex;
+      cond       : PSDL_Cond;
+      quit       : boolean;
+
+    public
+      constructor Create();
+
+      function Put(pkt : PAVPacket): integer;
+      function Get(var pkt: TAVPacket; block: boolean): integer;
+  end;
+
+type
+  TStreamStatus = (sNotReady, sStopped, sPlaying, sSeeking, sPaused, sOpen);
+
+const
+  StreamStatusStr:  array[TStreamStatus] of string = ('Not ready', 'Stopped', 'Playing', 'Seeking', 'Paused', 'Open');
+
+type
+  PAudioBuffer = ^TAudioBuffer;
+  TAudioBuffer = array[0 .. (AVCODEC_MAX_AUDIO_FRAME_SIZE * 3 div 2)-1] of byte;
+
+const
+  SDL_AUDIO_BUFFER_SIZE = 1024;
+
+type
+  TFFMpegOutputStream = class(TAudioOutputStream)
+    private
+      parseThread: PSDL_Thread;
+      packetQueue: TPacketQueue;
+
+      status: TStreamStatus;
+
+      // FFMpeg internal data
+      pFormatCtx     : PAVFormatContext;
+      pCodecCtx      : PAVCodecContext;
+      pCodec         : PAVCodec;
+      ffmpegStreamID : Integer;
+      ffmpegStream   : PAVStream;
+
+      // static vars for AudioDecodeFrame
+      pkt             : TAVPacket;
+      audio_pkt_data  : PChar;
+      audio_pkt_size  : integer;
+
+      // static vars for AudioCallback
+      audio_buf_index : cardinal;
+      audio_buf_size  : cardinal;
+      audio_buf       : TAudioBuffer;
+
+      channel: PPaStream;
+    public
+      constructor Create(); overload;
+      constructor Create(pFormatCtx: PAVFormatContext;
+                         pCodecCtx: PAVCodecContext; pCodec: PAVCodec;
+                         ffmpegStreamID : Integer; ffmpegStream: PAVStream); overload;
+
+      procedure Play();
+      procedure Pause();
+      procedure Stop();
+      procedure Close();
+
+      function AudioDecodeFrame(buffer : PUInt8; bufSize: integer): integer;
+  end;
+
+type
+  TAudio_FFMpeg = class( TInterfacedObject, IAudioPlayback )
+    private
+      MusicStream:        TFFMpegOutputStream;
+
+      StartSoundStream:   TFFMpegOutputStream;
+      BackSoundStream:    TFFMpegOutputStream;
+      SwooshSoundStream:  TFFMpegOutputStream;
+      ChangeSoundStream:  TFFMpegOutputStream;
+      OptionSoundStream:  TFFMpegOutputStream;
+      ClickSoundStream:   TFFMpegOutputStream;
+      DrumSoundStream:    TFFMpegOutputStream;
+      HihatSoundStream:   TFFMpegOutputStream;
+      ClapSoundStream:    TFFMpegOutputStream;
+      ShuffleSoundStream: TFFMpegOutputStream;
+
+      //Custom Sounds
+      CustomSounds: array of TCustomSoundEntry;
+      Loaded:   boolean;
+      Loop:     boolean;
+
+      function FindAudioStreamID(pFormatCtx : PAVFormatContext): integer;
+    public
+      function  GetName: String;
+      procedure InitializePlayback;
+      procedure SetVolume(Volume: integer);
+      procedure SetMusicVolume(Volume: integer);
+      procedure SetLoop(Enabled: boolean);
+      function Open(Name: string): boolean; // true if succeed
+      procedure Rewind;
+      procedure MoveTo(Time: real);
+      procedure Play;
+      procedure Pause; //Pause Mod
+      procedure Stop;
+      procedure Close;
+      function Finished: boolean;
+      function Length: real;
+      function getPosition: real;
+      procedure PlayStart;
+      procedure PlayBack;
+      procedure PlaySwoosh;
+      procedure PlayChange;
+      procedure PlayOption;
+      procedure PlayClick;
+      procedure PlayDrum;
+      procedure PlayHihat;
+      procedure PlayClap;
+      procedure PlayShuffle;
+      procedure StopShuffle;
+
+      function LoadSoundFromFile(Name: string): TFFMpegOutputStream;
+
+      //Equalizer
+      function GetFFTData: TFFTData;
+
+      // Interface for Visualizer
+      function GetPCMData(var data: TPCMData): Cardinal;
+
+      //Custom Sounds
+      function LoadCustomSound(const Filename: String): Cardinal;
+      procedure PlayCustomSound(const Index: Cardinal );
+  end;
+
+var
+  test: TFFMpegOutputStream;
+  it: integer;
+
+var
+  singleton_MusicFFMpeg : IAudioPlayback = nil;
+
+
+function ParseAudio(data: Pointer): integer; cdecl; forward;
+procedure SDL_AudioCallback( userdata: Pointer; stream: PUInt8; len: Integer ); cdecl; forward;
+function Pa_AudioCallback(input: Pointer; output: Pointer; frameCount: Longword;
+      timeInfo: PPaStreamCallbackTimeInfo; statusFlags: TPaStreamCallbackFlags;
+      userData: Pointer): Integer; cdecl; forward;
+
+constructor TFFMpegOutputStream.Create();
+begin
+  inherited;
+
+  packetQueue := TPacketQueue.Create();
+
+  FillChar(pkt, sizeof(TAVPacket), #0);
+
+  status := sStopped;
+
+  audio_pkt_data := nil;
+  audio_pkt_size := 0;
+
+  audio_buf_index := 0;
+  audio_buf_size  := 0;
+end;
+
+constructor TFFMpegOutputStream.Create(pFormatCtx: PAVFormatContext;
+                   pCodecCtx: PAVCodecContext; pCodec: PAVCodec;
+                   ffmpegStreamID : Integer; ffmpegStream: PAVStream);
+begin
+  Create();
+
+  Self.pFormatCtx := pFormatCtx;
+  Self.pCodecCtx := pCodecCtx;
+  Self.pCodec    := pCodec;
+  Self.ffmpegStreamID := ffmpegStreamID;
+  Self.ffmpegStream   := ffmpegStream;
+
+  test := Self;
+  it:=0;
+end;
+
+procedure TFFMpegOutputStream.Play();
+var
+  err: TPaError;
+begin
+  writeln('Play request');
+  if(status = sStopped) then
+  begin
+    writeln('Play ok');
+    status := sPlaying;
+    Self.parseThread := SDL_CreateThread(@ParseAudio, Self);
+    //SDL_PauseAudio(0);
+
+    err := Pa_StartStream(Self.channel);
+  end;
+end;
+
+procedure TFFMpegOutputStream.Pause();
+begin
+end;
+
+procedure TFFMpegOutputStream.Stop();
+begin
+end;
+
+procedure TFFMpegOutputStream.Close();
+begin
+  // Close the codec
+  avcodec_close(pCodecCtx);
+
+  // Close the video file
+  av_close_input_file(pFormatCtx);
+end;
+
+
+function TAudio_FFMpeg.GetName: String;
+begin
+  result := 'FFMpeg';
+end;
+
+procedure TAudio_FFMpeg.InitializePlayback;
+begin
+  Log.LogStatus('InitializePlayback', 'UAudio_FFMpeg');
+
+  Loaded := false;
+  Loop   := false;
+
+  av_register_all();
+  //SDL_Init(SDL_INIT_AUDIO);
+  Pa_Initialize();
+
+  StartSoundStream   := LoadSoundFromFile(SoundPath + 'Common Start.mp3');
+  {
+  BackSoundStream    := LoadSoundFromFile(SoundPath + 'Common Back.mp3');
+  SwooshSoundStream  := LoadSoundFromFile(SoundPath + 'menu swoosh.mp3');
+  ChangeSoundStream  := LoadSoundFromFile(SoundPath + 'select music change music 50.mp3');
+  OptionSoundStream  := LoadSoundFromFile(SoundPath + 'option change col.mp3');
+  ClickSoundStream   := LoadSoundFromFile(SoundPath + 'rimshot022b.mp3');
+  }
+//  DrumSoundStream  := LoadSoundFromFile(SoundPath + 'bassdrumhard076b.mp3');
+//  HihatSoundStream := LoadSoundFromFile(SoundPath + 'hihatclosed068b.mp3');
+//  ClapSoundStream  := LoadSoundFromFile(SoundPath + 'claps050b.mp3');
+
+//  ShuffleSoundStream := LoadSoundFromFile(SoundPath + 'Shuffle.mp3');
+end;
+
+
+procedure TAudio_FFMpeg.SetVolume(Volume: integer);
+begin
+  //New: Sets Volume only for this Application
+(*
+  BASS_SetConfig(BASS_CONFIG_GVOL_SAMPLE, Volume);
+  BASS_SetConfig(BASS_CONFIG_GVOL_STREAM, Volume);
+  BASS_SetConfig(BASS_CONFIG_GVOL_MUSIC, Volume);
+*)
+end;
+
+procedure TAudio_FFMpeg.SetMusicVolume(Volume: Integer);
+begin
+  //Max Volume Prevention
+  if Volume > 100 then
+    Volume := 100;
+
+  if Volume < 0 then
+    Volume := 0;
+
+
+  //Set Volume
+//  BASS_ChannelSetAttributes (Bass, -1, Volume, -101);
+end;
+
+procedure TAudio_FFMpeg.SetLoop(Enabled: boolean);
+begin
+  Loop := Enabled;
+end;
+
+function TAudio_FFMpeg.Open(Name: string): boolean;
+begin
+  Loaded := false;
+  if FileExists(Name) then
+  begin
+//    Bass := Bass_StreamCreateFile(false, pchar(Name), 0, 0, 0);
+
+    Loaded := true;
+    //Set Max Volume
+    SetMusicVolume (100);
+  end;
+
+  Result := Loaded;
+end;
+
+procedure TAudio_FFMpeg.Rewind;
+begin
+  if Loaded then
+  begin
+  end;
+end;
+
+procedure TAudio_FFMpeg.MoveTo(Time: real);
+var
+  bytes:    integer;
+begin
+//  bytes := BASS_ChannelSeconds2Bytes(Bass, Time);
+//  BASS_ChannelSetPosition(Bass, bytes);
+end;
+
+procedure TAudio_FFMpeg.Play;
+begin
+  if MusicStream <> nil then
+  if Loaded then
+  begin
+    if Loop then
+    begin
+    end;
+    // start from beginning...
+    // actually bass itself does not loop, nor does this TAudio_FFMpeg Class
+    MusicStream.Play();
+  end;
+end;
+
+procedure TAudio_FFMpeg.Pause; //Pause Mod
+begin
+  if MusicStream <> nil then
+  if Loaded then begin
+    MusicStream.Pause(); // Pauses Song
+  end;
+end;
+
+procedure TAudio_FFMpeg.Stop;
+begin
+  if MusicStream <> nil then
+  MusicStream.Stop();
+end;
+
+procedure TAudio_FFMpeg.Close;
+begin
+  if MusicStream <> nil then
+  MusicStream.Close();
+end;
+
+function TAudio_FFMpeg.Length: real;
+var
+  bytes: integer;
+begin
+  Result := MusicStream.pFormatCtx^.duration / AV_TIME_BASE;
+end;
+
+function TAudio_FFMpeg.getPosition: real;
+var
+  bytes: integer;
+begin
+  Result := 0;
+
+(*
+  bytes  := BASS_ChannelGetPosition(BASS);
+  Result := BASS_ChannelBytes2Seconds(BASS, bytes);
+*)
+end;
+
+function TAudio_FFMpeg.Finished: boolean;
+begin
+  Result := false;
+
+(*
+  if BASS_ChannelIsActive(BASS) = BASS_ACTIVE_STOPPED then
+  begin
+    Result := true;
+  end;
+*)
+end;
+
+procedure TAudio_FFMpeg.PlayStart;
+begin
+  if StartSoundStream <> nil then
+  StartSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayBack;
+begin
+  if BackSoundStream <> nil then
+  BackSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlaySwoosh;
+begin
+  if SwooshSoundStream <> nil then
+  SwooshSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayChange;
+begin
+  if ChangeSoundStream <> nil then
+  ChangeSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayOption;
+begin
+  if OptionSoundStream <> nil then
+  OptionSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayClick;
+begin
+  if ClickSoundStream <> nil then
+  ClickSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayDrum;
+begin
+  if DrumSoundStream <> nil then
+  DrumSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayHihat;
+begin
+  if HihatSoundStream <> nil then
+  HihatSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayClap;
+begin
+  if ClapSoundStream <> nil then
+  ClapSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.PlayShuffle;
+begin
+  if ShuffleSoundStream <> nil then
+  ShuffleSoundStream.Play();
+end;
+
+procedure TAudio_FFMpeg.StopShuffle;
+begin
+  if ShuffleSoundStream <> nil then
+  ShuffleSoundStream.Stop();
+end;
+
+
+function TFFMpegOutputStream.AudioDecodeFrame(buffer : PUInt8; bufSize: integer): integer;
+var
+  len1,
+  data_size: integer;
+begin
+  result := -1;
+
+  if (buffer = nil)  then
+    exit;
+
+  while true do
+  begin
+    while (audio_pkt_size > 0) do
+    begin
+//      writeln( 'got audio packet' );
+      data_size := bufSize;
+
+      if(pCodecCtx = nil) then begin
+        writeln('Das wars');
+        exit;
+      end;
+
+      // TODO: should be avcodec_decode_audio2 but this wont link on my ubuntu box.
+      len1 := avcodec_decode_audio(pCodecCtx, Pointer(buffer),
+                  data_size, audio_pkt_data, audio_pkt_size);
+
+      //writeln('avcodec_decode_audio : ' + inttostr( len1 ));
+
+      if(len1 < 0) then
+      begin
+	      // if error, skip frame
+//       	writeln( 'Skip audio frame' );
+        audio_pkt_size := 0;
+       	break;
+      end;
+
+      audio_pkt_data := audio_pkt_data + len1;
+      audio_pkt_size := audio_pkt_size + len1;
+
+      if (data_size <= 0) then
+      begin
+    	  // No data yet, get more frames
+     	  continue;
+      end;
+
+      // We have data, return it and come back for more later
+      result := data_size;
+      exit;
+    end;
+
+    inc(it);
+    if (pkt.data <> nil) then
+    begin
+      av_free_packet(pkt);
+    end;
+
+    if (packetQueue.quit) then
+    begin
+      result := -1;
+      exit;
+    end;
+    writeln(it);
+    if (packetQueue.Get(pkt, true) < 0) then
+    begin
+      result := -1;
+      exit;
+    end;
+
+    audio_pkt_data := PChar(pkt.data);
+    audio_pkt_size := pkt.size;
+//    writeln( 'Audio Packet Size - ' + inttostr(audio_pkt_size) );
+  end;
+end;
+
+procedure SDL_AudioCallback(userdata: Pointer; stream: PUInt8; len: Integer); cdecl;
+var
+  outStream       : TFFMpegOutputStream;
+  len1,
+  audio_size      : integer;
+  pSrc            : Pointer;
+begin
+  outStream := TFFMpegOutputStream(userdata);
+
+  while (len > 0) do
+  with outStream do begin
+    if (audio_buf_index >= audio_buf_size) then
+    begin
+      // We have already sent all our data; get more
+      audio_size := AudioDecodeFrame(@audio_buf, sizeof(TAudioBuffer));
+      //writeln('audio_decode_frame : '+ inttostr(audio_size));
+
+      if(audio_size < 0) then
+      begin
+      	// If error, output silence
+        audio_buf_size := 1024;
+        FillChar(audio_buf, audio_buf_size, #0);
+        //writeln( 'Silence' );
+      end
+      else
+      begin
+      	audio_buf_size := audio_size;
+      end;
+      audio_buf_index := 0;  // Todo : jb - SegFault ?
+    end;
+
+    len1 := audio_buf_size - audio_buf_index;
+    if (len1 > len) then
+      len1 := len;
+
+    pSrc := PChar(@audio_buf) + audio_buf_index;
+    {$ifdef WIN32}
+      CopyMemory(stream, pSrc , len1);
+    {$else}
+      memcpy(stream, pSrc , len1);
+    {$endif}
+
+    Dec(len, len1);
+    Inc(stream, len1);
+    Inc(audio_buf_index, len1);
+  end;
+end;
+
+function Pa_AudioCallback(input: Pointer; output: Pointer; frameCount: Longword;
+      timeInfo: PPaStreamCallbackTimeInfo; statusFlags: TPaStreamCallbackFlags;
+      userData: Pointer): Integer; cdecl;
+var
+  outStream       : TFFMpegOutputStream;
+  len1,
+  audio_size      : integer;
+  pSrc            : Pointer;
+  len             : integer;
+begin
+  outStream := TFFMpegOutputStream(userData);
+  len := frameCount * 4;  // use *2 for mono-files
+
+  while (len > 0) do
+  with outStream do begin
+    if (audio_buf_index >= audio_buf_size) then
+    begin
+      // We have already sent all our data; get more
+      audio_size := AudioDecodeFrame(@audio_buf, sizeof(TAudioBuffer));
+      //writeln('audio_decode_frame : '+ inttostr(audio_size));
+
+      if(audio_size < 0) then
+      begin
+      	// If error, output silence
+        audio_buf_size := 1024;
+        FillChar(audio_buf, audio_buf_size, #0);
+        //writeln( 'Silence' );
+      end
+      else
+      begin
+      	audio_buf_size := audio_size;
+      end;
+      audio_buf_index := 0;  // Todo : jb - SegFault ?
+    end;
+
+    len1 := audio_buf_size - audio_buf_index;
+    if (len1 > len) then
+      len1 := len;
+
+    pSrc := PChar(@audio_buf) + audio_buf_index;
+    {$ifdef WIN32}
+      CopyMemory(output, pSrc , len1);
+    {$else}
+      memcpy(output, pSrc , len1);
+    {$endif}
+
+    Dec(len, len1);
+    Inc(PChar(output), len1);
+    Inc(audio_buf_index, len1);
+  end;
+end;
+
+function TAudio_FFMpeg.FindAudioStreamID(pFormatCtx : PAVFormatContext): integer;
+var
+  i : integer;
+  streamID: integer;
+  stream : PAVStream;
+begin
+  // Find the first audio stream
+  streamID := -1;
+
+  for i := 0 to pFormatCtx^.nb_streams-1 do
+  begin
+    //Log.LogStatus('aFormatCtx.streams[i] : ' + inttostr(i), 'UAudio_FFMpeg');
+    stream := pFormatCtx^.streams[i];
+
+    if ( stream.codec^.codec_type = CODEC_TYPE_AUDIO ) then
+    begin
+      Log.LogStatus('Found Audio Stream', 'UAudio_FFMpeg');
+      streamID := i;
+      break;
+    end;
+  end;
+
+  result := streamID;
+end;
+
+function ParseAudio(data: Pointer): integer; cdecl;
+var
+  packet: TAVPacket;
+  stream: TFFMpegOutputStream;
+begin
+  stream := TFFMpegOutputStream(data);
+
+  while (av_read_frame(stream.pFormatCtx, packet) >= 0) do
+  begin
+    //writeln( 'ffmpeg - av_read_frame' );
+
+    if (packet.stream_index = stream.ffmpegStreamID) then
+    begin
+      //writeln( 'packet_queue_put' );
+      stream.packetQueue.put(@packet);
+    end
+    else
+    begin
+      av_free_packet(packet);
+    end;
+  end;
+
+  //Writeln('Done: ' + inttostr(stream.packetQueue.nbPackets));
+
+  result := 0;
+end;
+
+
+function TAudio_FFMpeg.LoadSoundFromFile(Name: string): TFFMpegOutputStream;
+var
+  pFormatCtx     : PAVFormatContext;
+  pCodecCtx      : PAVCodecContext;
+  pCodec         : PAVCodec;
+  ffmpegStreamID : Integer;
+  ffmpegStream   : PAVStream;
+  wanted_spec,
+  spec           : TSDL_AudioSpec;
+  csIndex        : integer;
+  stream         : TFFMpegOutputStream;
+  err            : TPaError;
+begin
+  result := nil;
+
+  if (not FileExists(Name)) then
+  begin
+    Log.LogStatus('LoadSoundFromFile: Sound not found "' + Name + '"', 'UAudio_FFMpeg');
+    exit;
+  end;
+
+  // Open audio file
+  if (av_open_input_file(pFormatCtx, PChar(Name), nil, 0, nil) > 0) then
+    exit;
+
+  // Retrieve stream information
+  if (av_find_stream_info(pFormatCtx) < 0) then
+    exit;
+
+  dump_format(pFormatCtx, 0, pchar(Name), 0);
+
+  ffmpegStreamID := FindAudioStreamID(pFormatCtx);
+  if (ffmpegStreamID < 0) then
+    exit;
+
+  //Log.LogStatus('Audio Stream ID is : '+ inttostr(ffmpegStreamID), 'UAudio_FFMpeg');
+
+  ffmpegStream := pFormatCtx.streams[ffmpegStreamID];
+  pCodecCtx := ffmpegStream^.codec;
+
+  pCodec := avcodec_find_decoder(pCodecCtx^.codec_id);
+  if (pCodec = nil) then
+  begin
+    Log.LogStatus('Unsupported codec!', 'UAudio_FFMpeg');
+    exit;
+  end;
+
+  avcodec_open(pCodecCtx, pCodec);
+  //writeln( 'Opened the codec' );
+
+  stream := TFFMpegOutputStream.Create(pFormatCtx, pCodecCtx, pCodec,
+              ffmpegStreamID, ffmpegStream);
+
+  {
+  // Set SDL audio settings from codec info
+  wanted_spec.freq     := pCodecCtx^.sample_rate;
+  wanted_spec.format   := AUDIO_S16SYS;
+  wanted_spec.channels := pCodecCtx^.channels;
+  wanted_spec.silence  := 0;
+  wanted_spec.samples  := SDL_AUDIO_BUFFER_SIZE;
+  wanted_spec.callback := AudioCallback;
+  wanted_spec.userdata := stream;
+
+  // TODO: this works only one time (?)
+  if (SDL_OpenAudio(@wanted_spec, @spec) < 0) then
+  begin
+    Log.LogStatus('SDL_OpenAudio: '+SDL_GetError(), 'UAudio_FFMpeg');
+    stream.Free();
+    exit;
+  end;
+  }
+
+  err := Pa_OpenDefaultStream(stream.channel, 0, pCodecCtx^.channels, paInt16,
+          pCodecCtx^.sample_rate, SDL_AUDIO_BUFFER_SIZE div 4, //paFramesPerBufferUnspecified,
+          @PA_AudioCallback, stream);
+  if(err <> paNoError) then begin
+    Log.LogStatus('Pa_OpenDefaultStream: '+Pa_GetErrorText(err), 'UAudio_FFMpeg');
+    stream.Free();
+    exit;
+  end;
+
+  Log.LogStatus('SDL opened audio device', 'UAudio_FFMpeg');
+
+  //Add CustomSound
+  csIndex := High(CustomSounds) + 1;
+  SetLength (CustomSounds, csIndex + 1);
+  CustomSounds[csIndex].Filename := Name;
+  CustomSounds[csIndex].Stream := stream;
+
+  result := stream;
+end;
+
+//Equalizer
+function TAudio_FFMpeg.GetFFTData: TFFTData;
+var
+  data: TFFTData;
+begin
+  //Get Channel Data Mono and 256 Values
+//  BASS_ChannelGetData(Bass, @Result, BASS_DATA_FFT512);
+  result := data;
+end;
+
+// Interface for Visualizer
+function TAudio_FFMpeg.GetPCMData(var data: TPCMData): Cardinal;
+begin
+  result := 0;
+end;
+
+function TAudio_FFMpeg.LoadCustomSound(const Filename: String): Cardinal;
+var
+  S: TFFMpegOutputStream;
+  I: Integer;
+  F: String;
+begin
+  //Search for Sound in already loaded Sounds
+  F := UpperCase(SoundPath + FileName);
+  For I := 0 to High(CustomSounds) do
+  begin
+    if (UpperCase(CustomSounds[I].Filename) = F) then
+    begin
+      Result := I;
+      Exit;
+    end;
+  end;
+
+  S := LoadSoundFromFile(SoundPath + Filename);
+  if (S <> nil) then
+    Result := High(CustomSounds)
+  else
+    Result := 0;
+end;
+
+procedure TAudio_FFMpeg.PlayCustomSound(const Index: Cardinal );
+begin
+  if Index <= High(CustomSounds) then
+    (CustomSounds[Index].Stream as TFFMpegOutputStream).Play();
+end;
+
+
+constructor TPacketQueue.Create();
+begin
+  inherited;
+
+  firstPkt := nil;
+  lastPkt  := nil;
+  nbPackets := 0;
+  size := 0;
+
+  mutex := SDL_CreateMutex();
+  cond  := SDL_CreateCond();
+end;
+
+function TPacketQueue.Put(pkt : PAVPacket): integer;
+var
+  pkt1 : PAVPacketList;
+begin
+  result := -1;
+
+  if (av_dup_packet(pkt) < 0) then
+    exit;
+    
+  pkt1 := av_malloc(sizeof(TAVPacketList));
+  if (pkt1 = nil) then
+    exit;
+
+  pkt1^.pkt  := pkt^;
+  pkt1^.next := nil;
+
+
+  SDL_LockMutex(Self.mutex);
+  try
+
+    if (Self.lastPkt = nil) then
+      Self.firstPkt := pkt1
+    else
+      Self.lastPkt^.next := pkt1;
+      
+    Self.lastPkt := pkt1;
+    inc(Self.nbPackets);
+
+    Writeln('Put: ' + inttostr(nbPackets));
+
+    Self.size := Self.size + pkt1^.pkt.size;
+    SDL_CondSignal(Self.cond);
+
+  finally
+    SDL_UnlockMutex(Self.mutex);
+  end;
+
+  result := 0;
+end;
+
+function TPacketQueue.Get(var pkt: TAVPacket; block: boolean): integer;
+var
+  pkt1 : PAVPacketList;
+begin
+  result := -1;
+
+  SDL_LockMutex(Self.mutex);
+  try
+    while true do
+    begin
+      if (quit) then
+        exit;
+
+      pkt1 := Self.firstPkt;
+
+      if (pkt1 <> nil) then
+      begin
+        Self.firstPkt := pkt1.next;
+        if (Self.firstPkt = nil) then
+      	  Self.lastPkt := nil;
+        dec(Self.nbPackets);
+
+        Writeln('Get: ' + inttostr(nbPackets));
+
+        Self.size := Self.size - pkt1^.pkt.size;
+        pkt := pkt1^.pkt;
+        av_free(pkt1);
+
+        result := 1;
+        break;
+      end
+      else
+      if (not block) then
+      begin
+        result := 0;
+        break;
+      end
+      else
+      begin
+        SDL_CondWait(Self.cond, Self.mutex);
+      end;
+    end;
+  finally
+    SDL_UnlockMutex(Self.mutex);
+  end;
+end;
+
+
+
+initialization
+  singleton_MusicFFMpeg := TAudio_FFMpeg.create();
+
+  writeln( 'UAudio_FFMpeg - Register Playback' );
+  AudioManager.add( IAudioPlayback( singleton_MusicFFMpeg ) );
+
+finalization
+  AudioManager.Remove( IAudioPlayback( singleton_MusicFFMpeg ) );
+
+
+end.
-- 
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