Visualizer changes (audio connection, some opengl fixes)

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@679 b956fd51-792f-4845-bead-9b4dfca2ff2c

4 files changed, 106 insertions, 41 deletions

diff --git a/Game/Code/Classes/UAudio_bass.pas b/Game/Code/Classes/UAudio_bass.pas
index bcf01f92..69278cca 100644
--- a/Game/Code/Classes/UAudio_bass.pas
+++ b/Game/Code/Classes/UAudio_bass.pas
@@ -100,6 +100,9 @@ type
       //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 );

@@ -384,6 +387,40 @@ begin
   BASS_ChannelGetData(Bass, @Result, BASS_DATA_FFT512);

 end;

 

+{*

+ * Copies interleaved PCM 16bit uint (maybe fake) stereo samples into data.

+ * Returns the number of frames (= stereo/mono sample)

+ *}

+function TAudio_bass.GetPCMData(var data: TPCMData): Cardinal;

+var

+  info: BASS_CHANNELINFO;

+  nBytes: DWORD;

+begin

+  //Get Channel Data Mono and 256 Values

+  BASS_ChannelGetInfo(Bass, info);

+  ZeroMemory(@data, sizeof(TPCMData));

+  

+  if (info.chans = 1) then

+  begin

+    // mono file -> add stereo channel

+    {

+    nBytes := BASS_ChannelGetData(Bass, @data[0], samples*sizeof(Smallint));

+    // interleave data

+    //CopyMemory(@data[1], @data[0], samples*sizeof(Smallint));

+    }

+    result := 0;

+  end

+  else

+  begin

+    // stereo file

+    nBytes := BASS_ChannelGetData(Bass, @data, sizeof(TPCMData));

+  end;

+  if(nBytes <= 0) then

+    result := 0

+  else

+    result := nBytes div sizeof(TPCMStereoSample);

+end;

+

 function TAudio_bass.LoadCustomSound(const Filename: String): Cardinal;

 var

   S: hStream;

diff --git a/Game/Code/Classes/UMedia_dummy.pas b/Game/Code/Classes/UMedia_dummy.pas
index 630b497e..c5fb799c 100644
--- a/Game/Code/Classes/UMedia_dummy.pas
+++ b/Game/Code/Classes/UMedia_dummy.pas
@@ -57,6 +57,7 @@ type
       procedure CaptureCard(RecordI, PlayerLeft, PlayerRight: byte);
       procedure StopCard(Card: byte);
       function GetFFTData: TFFTData;
+      function GetPCMData(var data: TPCMData): Cardinal;
 
       // IAudioPlayback
       procedure InitializePlayback;
@@ -167,6 +168,11 @@ function  Tmedia_dummy.GetFFTData: TFFTData;
 begin
 end;
 
+function  Tmedia_dummy.GetPCMData(var data: TPCMData): Cardinal;
+begin
+  result := 0;
+end;
+
 // IAudioPlayback
 procedure Tmedia_dummy.InitializePlayback;
 begin
diff --git a/Game/Code/Classes/UMusic.pas b/Game/Code/Classes/UMusic.pas
index 18ec2944..4acbb55a 100644
--- a/Game/Code/Classes/UMusic.pas
+++ b/Game/Code/Classes/UMusic.pas
@@ -83,7 +83,10 @@ type
     Source:   array of string;
   end;
 
-  TFFTData  = array [0..256] of Single;
+  TFFTData  = array[0..256] of Single;
+
+  TPCMStereoSample = array[0..1] of Smallint;
+  TPCMData  = array[0..511] of TPCMStereoSample;
 
   hStream = Cardinal;
 
@@ -165,6 +168,9 @@ type
 
       //Equalizer
       function GetFFTData: TFFTData;
+
+      // Interface for Visualizer
+      function GetPCMData(var data: TPCMData): Cardinal;
   end;
 
   IAudioInput = Interface
diff --git a/Game/Code/Classes/UVisualizer.pas b/Game/Code/Classes/UVisualizer.pas
index 1905358f..0f2334ba 100644
--- a/Game/Code/Classes/UVisualizer.pas
+++ b/Game/Code/Classes/UVisualizer.pas
@@ -30,16 +30,19 @@ uses SDL,
 

 implementation

 

+uses

+     UGraphic;

+

 var

   singleton_VideoProjectM : IVideoPlayback;
 

 const

-  VisualWidth  = 800;  // 640

-  VisualHeight = 600;  // 480

   gx           = 32;

   gy           = 24;

   fps          = 30;

   texsize      = 512;

+  visuals_Dir  = 'Visuals'; // TODO: move this to a place common for all visualizers

+  projectM_Dir = visuals_Dir+'/projectM';

 

 type

   TVideoPlayback_ProjectM = class( TInterfacedObject, IVideoPlayback )

@@ -50,7 +53,7 @@ type
     VisualizerPaused  : Boolean;

 

     VisualTex         : glUint;

-    pcm_data          : TPCM16;

+    PCMData           : TPCMData;

     hRC               : Integer;

     hDC               : Integer;

 
@@ -140,7 +143,6 @@ end;
 
 procedure TVideoPlayback_ProjectM.VisualizerStart;

 begin

-//exit;

   VisualizerStarted := True;

 

   New(pm);

@@ -153,8 +155,8 @@ begin
 	pm^.fps := fps;

 	pm^.renderTarget^.usePbuffers := 0;

 

-	pm^.fontURL   := PChar('Visuals\fonts');

-	pm^.presetURL := PChar('Visuals\presets');

+	pm^.fontURL := PChar(projectM_Dir+'/fonts');

+	pm^.presetURL := PChar(projectM_Dir+'/presets');

 

 	glPushAttrib(GL_ALL_ATTRIB_BITS);

 	projectM_init(pm);

@@ -164,7 +166,9 @@ begin
   glPushMatrix();

   glMatrixMode(GL_TEXTURE);

   glPushMatrix();

-	projectM_resetGL(pm, VisualWidth, VisualHeight);

+

+	projectM_resetGL(pm, ScreenW, ScreenH);

+  

   glMatrixMode(GL_PROJECTION);

   glPopMatrix();

   glMatrixMode(GL_MODELVIEW);

@@ -191,21 +195,16 @@ end;
 procedure TVideoPlayback_ProjectM.GetFrame(Time: Extended);

 var

   i: integer;

+  nSamples: cardinal;

 begin

-//  exit;

-

   if not VisualizerStarted then Exit;

   if VisualizerPaused then Exit;

 

-  Randomize();

-

-	for i := 0 to 511 do

-  begin

-    pcm_data[0][i] := RandomRange(High(Smallint), Low(Smallint));

-    pcm_data[1][i] := pcm_data[0][i];

-  end;

-  addPCM16(pcm_data);

+  // get audio data

+  nSamples := AudioPlayback.GetPCMData(PcmData);

+  addPCM16Data(PSmallInt(@PcmData), nSamples);

 

+  // store OpenGL state (might be messed up otherwise)

   glPushAttrib(GL_ALL_ATTRIB_BITS);

   glMatrixMode(GL_PROJECTION);

   glPushMatrix();

@@ -213,12 +212,17 @@ begin
   glPushMatrix();

   glMatrixMode(GL_TEXTURE);

   glPushMatrix();

+

+  // let projectM render a frame

   renderFrame(pm);

   glFlush();

-  {

+

+  {$IFDEF UseTexture}

   glBindTexture(GL_TEXTURE_2D, VisualTex);

   glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 0, 0, VisualWidth, VisualHeight, 0);

-  }

+  {$ENDIF}

+

+  // restore USDX OpenGL state

   glMatrixMode(GL_PROJECTION);

   glPopMatrix();

   glMatrixMode(GL_MODELVIEW);

@@ -227,41 +231,45 @@ begin
   glPopMatrix();

   glPopAttrib();

 

+  // discard projectM's depth buffer information (avoid overlay)

   glClear(GL_DEPTH_BUFFER_BIT);

-

-  {

-  glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);

-

-  glEnable(GL_TEXTURE_2D);

-  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

-  glBindTexture(GL_TEXTURE_2D, VisualTex);

-  glBegin(GL_QUADS);

-    glTexCoord2f(0, 0); glVertex2f(-1, -1);

-    glTexCoord2f(1, 0); glVertex2f( 1, -1);

-    glTexCoord2f(1, 1); glVertex2f( 1,  1);

-    glTexCoord2f(0, 1); glVertex2f(-1,  1);

-  glEnd();

-  glDisable(GL_TEXTURE_2D);

-  }

 end;

 

 procedure TVideoPlayback_ProjectM.DrawGL(Screen: integer);

 begin

-

-  exit;

-

+  {$IFDEF UseTexture}

   // have a nice black background to draw on (even if there were errors opening the vid)

   if Screen=1 then begin

-    glClearColor(0,0,0,0);

+    glClearColor(0, 0, 0, 0);

     glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);

   end;

   // exit if there's nothing to draw

   if not VisualizerStarted then Exit;

 

-  glEnable(GL_TEXTURE_2D);

+  // setup display

+  glMatrixMode(GL_PROJECTION);

+  glPushMatrix();

+  glLoadIdentity();

+  gluOrtho2D(0, 1, 0, 1);

+  glMatrixMode(GL_MODELVIEW);

+  glPushMatrix();

+  glLoadIdentity();

+

   glEnable(GL_BLEND);

-  glColor4f(1, 1, 1, 1);

+  glEnable(GL_TEXTURE_2D);

+  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

   glBindTexture(GL_TEXTURE_2D, VisualTex);

+  glColor4f(1, 1, 1, 1);

+

+  // draw projectM frame

+  glBegin(GL_QUADS);

+    glTexCoord2f(0, 0); glVertex2f(0, 0);

+    glTexCoord2f(1, 0); glVertex2f(1, 0);

+    glTexCoord2f(1, 1); glVertex2f(1, 1);

+    glTexCoord2f(0, 1); glVertex2f(0, 1);

+  glEnd();

+

+  {

   glbegin(GL_QUADS);

     glTexCoord2f(0, 0);

     glVertex2f(400-VisualWidth/2, 300-VisualHeight/2);

@@ -272,9 +280,17 @@ begin
     glTexCoord2f(1, 0);

     glVertex2f(400+VisualWidth/2, 300-VisualHeight/2);

   glEnd;

+  }

+

   glDisable(GL_TEXTURE_2D);

   glDisable(GL_BLEND);

 

+  // restore state

+  glMatrixMode(GL_PROJECTION);

+  glPopMatrix();

+  glMatrixMode(GL_MODELVIEW);

+  glPopMatrix();

+  {$ENDIF}

 end;