chapter3

まだ音が出ません　ヘッダの問題かな

diff --git a/spWav.pas b/spWav.pas
index 688af66..f0410cd 100644 (file)
--- a/spWav.pas
+++ b/spWav.pas
@@ -36,4 +36,7 @@ const
   STR_WAVE = 'WAVE';
   STR_fmt = 'fmt ';
   STR_DATA = 'data';
-  _MAX_PATH = 255;
\ No newline at end of file
+  _MAX_PATH = 255;
+
+  WAV_MONAURAL = 1;
+  WAV_STEREO = 2;
\ No newline at end of file

diff --git a/wav_proj.dpr b/wav_proj.dpr
index 9caf049..a92bcb3 100644 (file)
--- a/wav_proj.dpr
+++ b/wav_proj.dpr
@@ -11,9 +11,10 @@ uses
 
 function effect8BitWav(fpIn, fpOut: TFileStream; sizeOfData: LongInt): integer;
 var
-  i: integer;
+  i, j: integer;
   s: Single;
   c: array [0 .. 1] of Byte;
+  mix: Byte;
 begin
   result := 0;
   i := 0;
@@ -22,22 +23,23 @@ begin
   begin
     try
       fpIn.ReadBuffer(c, SizeOf(c));
-      c[0] := 128;
-      fpOut.WriteBuffer(c, SizeOf(c));
+      j:=(c[0]+c[1]) div 2;
+      mix:=j;
+      fpOut.WriteBuffer(mix, SizeOf(mix));
     except
       result := -1;
       break;
     end;
-    Writeln(c[0], ' : ', c[1]);
     inc(i);
   end;
 end;
 
 function effect16BitWav(fpIn, fpOut: TFileStream; sizeOfData: LongInt): integer;
 var
-  i: integer;
+  i, j: integer;
   s: Single;
   c: array [0 .. 1] of ShortInt;
+  mix: LongInt;
 begin
   result := 0;
   i := 0;
@@ -46,13 +48,13 @@ begin
   begin
     try
       fpIn.ReadBuffer(c, SizeOf(c));
-      c[0] := 0;
-      fpOut.WriteBuffer(c, SizeOf(c));
+      j:=(c[0]+c[1]) div 2;
+      mix:=j;
+      fpOut.WriteBuffer(mix, SizeOf(mix));
     except
       result := -1;
       break;
     end;
-    Writeln(c[0], ' : ', c[1]);
     inc(i);
   end;
 end;

diff --git a/wav_proj.dproj.local b/wav_proj.dproj.local
index 74aa953..6b8a0be 100644 (file)
--- a/wav_proj.dproj.local
+++ b/wav_proj.dproj.local
@@ -11,8 +11,8 @@
     <Transaction>2017/10/19 20:49:15.000.988,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
     <Transaction>2017/10/19 20:49:16.000.125,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/10/19 20:49:16.000.218,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
-    <Transaction>2017/10/19 20:49:45.000.913,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/10/19 20:49:45.000.816,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
+    <Transaction>2017/10/19 20:49:45.000.913,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/10/19 20:50:18.000.999,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/10/19 20:50:19.000.049,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/10/19 21:37:00.000.271,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
@@ -21,11 +21,11 @@
     <Transaction>2017/10/28 22:58:31.000.296,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
     <Transaction>2017/10/29 14:44:00.000.024,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
     <Transaction>2017/10/29 16:13:37.000.037,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
-    <Transaction>2017/10/29 16:13:37.000.809,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/10/29 16:13:37.000.174,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
-    <Transaction>2017/10/29 16:55:16.000.244,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
-    <Transaction>2017/10/29 16:55:16.000.343,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
+    <Transaction>2017/10/29 16:13:37.000.809,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/10/29 16:55:16.000.109,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
+    <Transaction>2017/10/29 16:55:16.000.343,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
+    <Transaction>2017/10/29 16:55:16.000.244,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/10/30 15:04:38.000.106,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\WebModuleUnit1.pas</Transaction>
     <Transaction>2017/11/01 16:00:52.000.956,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/11/01 16:00:53.000.058,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
@@ -35,8 +35,8 @@
     <Transaction>2017/11/01 18:21:25.000.947,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:21:26.000.254,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\WebModuleUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:23:22.000.440,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\WebModuleUnit1.pas</Transaction>
-    <Transaction>2017/11/01 18:23:22.000.193,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\FormUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:23:22.000.344,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
+    <Transaction>2017/11/01 18:23:22.000.193,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\FormUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:33:21.000.133,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerContainerUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:33:21.000.032,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\ServerMethodsUnit1.pas</Transaction>
     <Transaction>2017/11/01 18:33:39.000.795,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\WebModuleUnit1.pas</Transaction>
@@ -45,11 +45,11 @@
     <Transaction>2018/01/01 12:40:34.000.125,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
     <Transaction>2018/01/01 12:40:55.000.044,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
     <Transaction>2018/05/07 18:00:45.000.726,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
-    <Transaction>2018/05/07 18:01:10.000.795,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\wav.pas</Transaction>
-    <Transaction>2018/05/07 18:01:39.000.274,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Project1.dproj=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\wav_proj.dproj</Transaction>
+    <Transaction>2018/05/07 18:01:10.000.795,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\wav.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Unit1.pas</Transaction>
+    <Transaction>2018/05/07 18:01:39.000.274,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\wav_proj.dproj=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\Project1.dproj</Transaction>
     <Transaction>2018/05/07 21:20:21.000.796,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas</Transaction>
-    <Transaction>2018/05/07 21:20:27.000.646,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\spWave.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas</Transaction>
+    <Transaction>2018/05/07 21:20:27.000.646,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\spWave.pas</Transaction>
     <Transaction>2018/05/09 21:56:39.000.226,=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas</Transaction>
-    <Transaction>2018/05/09 21:56:54.000.027,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\WriteHeader.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas</Transaction>
+    <Transaction>2018/05/09 21:56:54.000.027,C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\Unit1.pas=C:\Users\yamat\Documents\Embarcadero\Studio\Projects\myapp\wav\WriteHeader.pas</Transaction>
   </Transactions>
 </BorlandProject>