X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fengine%2Fe_soundfile_wav.pas;h=84ea42df4c5c12068309086e75f61ff2941c2593;hb=9193a04898bdd4020400c8acd8b1bcaccbe33dbf;hp=0ebe256b9d9d818245067079d9fe22c99a5e252c;hpb=987c4a835a103345b59937e8e1be8524a6228712;p=d2df-sdl.git

diff --git a/src/engine/e_soundfile_wav.pas b/src/engine/e_soundfile_wav.pas
index 0ebe256..84ea42d 100644
--- a/src/engine/e_soundfile_wav.pas
+++ b/src/engine/e_soundfile_wav.pas
@@ -24,15 +24,17 @@ type
 
   TWAVLoader = class (TSoundLoader)
   public
-    function Load(Data: Pointer; Len: LongWord; SStreaming: Boolean): Boolean; override; overload;
-    function Load(FName: string; SStreaming: Boolean): Boolean; override; overload;
-    function SetPosition(Pos: LongWord): Boolean; override;
+    function Load(Data: Pointer; Len: LongWord; Loop: Boolean): Boolean; override; overload;
+    function Load(FName: string; Loop: Boolean): Boolean; override; overload;
+    function Finished(): Boolean; override;
+    function Restart(): Boolean; override;
     function FillBuffer(Buf: Pointer; Len: LongWord): LongWord; override;
-    function GetAll(var OutPtr: Pointer): LongWord; override;
     procedure Free(); override;
   private
     FData: Pointer;
     FDataLen: LongWord;
+    FDataPos: LongWord;
+    FLooping: Boolean;
   end;
 
   TWAVLoaderFactory = class (TSoundLoaderFactory)
@@ -44,7 +46,13 @@ type
 
 implementation
 
-uses sdl2, utils, e_log;
+uses
+  {$IFDEF USE_SDL}
+    SDL,
+  {$ELSE}
+    SDL2,
+  {$ENDIF}
+  utils, ctypes, e_log;
 
 (* TWAVLoaderFactory *)
 
@@ -73,99 +81,144 @@ begin
 end;
 
 (* TWAVLoader *)
+function ConvertSound (var buf: PUInt8; var len: UInt32; var format: UInt16; rate: cint; chan: UInt8): Boolean;
+  var cvt: TSDL_AudioCVT; tformat: UInt16;
+begin
+  result := true;
+  case format of
+    AUDIO_U8,     AUDIO_S8    : tformat := AUDIO_U8; (* yes, unsigned *)
+    AUDIO_U16LSB, AUDIO_U16MSB: tformat := AUDIO_S16SYS; (* and yes, signed *)
+    AUDIO_S16LSB, AUDIO_S16MSB: tformat := AUDIO_S16SYS;
+    AUDIO_S32LSB, AUDIO_S32MSB: tformat := AUDIO_S16SYS; (* 32bit not supported in al core *)
+    AUDIO_F32LSB, AUDIO_F32MSB: tformat := AUDIO_S16SYS; (* float not supported in al core *)
+  else result := false (* unsupported format *)
+  end;
+  if (result = true) and (format <> tformat) then
+  begin
+    Result := False;
+    if SDL_BuildAudioCVT(@cvt, format, chan, rate, tformat, chan, rate) <> -1 then
+    begin
+      buf := SDL_realloc(buf, len * cvt.len_mult);
+      cvt.len := len;
+      cvt.buf := buf;
+      result := SDL_ConvertAudio(@cvt) = 0;
+      len := cvt.len_cvt;
+      format := tformat
+    end
+  end
+end;
 
-function TWAVLoader.Load(Data: Pointer; Len: LongWord; SStreaming: Boolean): Boolean;
-var
-  Spec: TSDL_AudioSpec;
-  RW: PSDL_RWops;
-  TmpLen: UInt32;
-  TmpBuf: PUInt8;
+function LoadWavRW (Loader: TWAVLoader; RW: PSDL_RWops): Boolean;
+  var
+    Spec: TSDL_AudioSpec;
+    Len: UInt32;
+    Buf: PUInt8;
 begin
   Result := False;
-
-  RW := SDL_RWFromConstMem(Data, Len);
-
-  if SDL_LoadWAV_RW(RW, 0, @Spec, @TmpBuf, @TmpLen) = nil then
+{$IFDEF USE_SDL2}
+  if SDL_LoadWAV_RW(RW, 0, @Spec, @Buf, @Len) <> nil then
+{$ELSE}
+  if SDL_LoadWAV_RW(RW, 0, @Spec, PUInt8(@Buf), @Len) <> nil then
+{$ENDIF}
   begin
-    e_LogWriteln('Could not load WAV: ' + SDL_GetError());
+    Result := ConvertSound(Buf, Len, Spec.format, Spec.freq, Spec.channels);
+    if Result = True then
+    begin
+      with Loader do
+      begin
+        FFormat.SampleRate := Spec.freq;
+        {$IFDEF USE_SDL2}
+          FFormat.SampleBits := SDL_AUDIO_BITSIZE(Spec.format);
+        {$ELSE}
+          FFormat.SampleBits := Spec.format and $FF;
+        {$ENDIF}
+        FFormat.Channels := Spec.channels;
+        FDataPos := 0;
+        FDataLen := Len;
+        FData := Buf;
+      end
+    end
+    else
+    begin
+      SDL_FreeWav(Buf)
+    end
   end
-  else
-  begin
-    FFormat.SampleRate := Spec.freq;
-    FFormat.SampleBits := SDL_AUDIO_BITSIZE(Spec.format);
-    FFormat.Channels := Spec.channels;
-    FStreaming := False; // never stream wavs
-    FDataLen := TmpLen;
-    FData := TmpBuf;
-    Result := True;
-  end;
+end;
 
+function TWAVLoader.Load(Data: Pointer; Len: LongWord; Loop: Boolean): Boolean;
+  var
+    RW: PSDL_RWops;
+begin
+  RW := SDL_RWFromConstMem(Data, Len);
+  Result := LoadWavRW(Self, RW);
+  if Result = False then
+    e_LogWriteln('Could not load WAV: ' + SDL_GetError());
   SDL_RWclose(RW);
+  FStreaming := False;
+  FLooping := Loop;
 end;
 
-function TWAVLoader.Load(FName: string; SStreaming: Boolean): Boolean;
-var
-  Spec: TSDL_AudioSpec;
-  RW: PSDL_RWops;
-  TmpLen: UInt32;
-  TmpBuf: PUInt8;
+function TWAVLoader.Load(FName: string; Loop: Boolean): Boolean;
+  var
+    RW: PSDL_RWops;
 begin
-  Result := False;
-
   RW := SDL_RWFromFile(PChar(FName), 'rb');
-
-  if RW = nil then
-  begin
-    e_LogWritefln('Could not open WAV file `%s`: %s', [FName, SDL_GetError()]);
-    exit;
-  end;
-
-  if SDL_LoadWAV_RW(RW, 0, @Spec, @TmpBuf, @TmpLen) = nil then
+  if RW <> nil then
   begin
-    e_LogWritefln('Could not load WAV file `%s`: %s', [FName, SDL_GetError()]);
+    Result := LoadWavRW(Self, RW);
+    if Result = False then
+      e_LogWritefln('Could not load WAV file `%s`: %s', [FName, SDL_GetError()]);
   end
   else
   begin
-    FFormat.SampleRate := Spec.freq;
-    FFormat.SampleBits := SDL_AUDIO_BITSIZE(Spec.format);
-    FFormat.Channels := Spec.channels;
-    FStreaming := False; // never stream wavs
-    FDataLen := TmpLen;
-    FData := TmpBuf;
-    Result := True;
+    e_LogWritefln('Could not open WAV file `%s`: %s', [FName, SDL_GetError()]);
+    Result := False
   end;
-
   SDL_RWclose(RW);
+  FStreaming := False;
+  FLooping := Loop;
 end;
 
-function TWAVLoader.SetPosition(Pos: LongWord): Boolean;
+function TWAVLoader.Finished(): Boolean;
 begin
-  Result := False; // makes no sense when not streaming
+  Result := FDataPos >= FDataLen;
 end;
 
-function TWAVLoader.FillBuffer(Buf: Pointer; Len: LongWord): LongWord;
+function TWAVLoader.Restart(): Boolean;
 begin
-  if FDataLen < Len then
-    Len := FDataLen;
-  if FData <> nil then
-  begin
-    Move(FData^, Buf^, Len);
-    Result := Len;
-  end
-  else
-    Result := 0;
+  Result := True;
+  FDataPos := 0;
 end;
 
-function TWAVLoader.GetAll(var OutPtr: Pointer): LongWord;
+function TWAVLoader.FillBuffer(Buf: Pointer; Len: LongWord): LongWord;
+var
+  OutPos: LongWord;
+  Tx: LongWord;
 begin
-  OutPtr := FData;
-  Result := FDataLen;
+  OutPos := 0;
+  Result := 0;
+
+  while (FDataPos < FDataLen) and (OutPos < Len) do
+  begin
+    Tx := nmin(FDataLen - FDataPos, Len - OutPos);
+    Move((FData + FDataPos)^, (Buf + OutPos)^, Tx);
+
+    FDataPos := FDataPos + Tx;
+    OutPos := OutPos + Tx;
+    Result := Result + Tx;
+
+    if (FDataPos >= FDataLen) and FLooping then
+      FDataPos := 0;
+  end;
 end;
 
 procedure TWAVLoader.Free();
 begin
   if FData <> nil then
     SDL_FreeWAV(FData); // SDL allocates inside the DLL, so we need this
+  FDataPos := 0;
+  FData := nil;
+  FDataLen := 0;
 end;
 
 initialization