Import from http://www.sharpmz.org/mzf2wav.htm

1 files changed, 56 insertions, 0 deletions

diff --git a/mzf2wav/src/wav.c b/mzf2wav/src/wav.c
new file mode 100644
index 0000000..ba0c3fa
--- /dev/null
+++ b/mzf2wav/src/wav.c
@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include "wav.h"
+#include "physical.h"
+
+// Externs.
+extern FILE *OUT;
+
+// Global variables.
+dword fs = 0;
+// Numbers are little endian.
+byte header[44] = { 'R', 'I', 'F', 'F',   // File description header.
+                    0x0, 0x0, 0x0, 0x0,   // Filesize - 8.
+                    'W', 'A', 'V', 'E',   // "WAVE" Description header.
+                    'f', 'm', 't', ' ',   // "fmt " Description header.
+                    0x10, 0x0, 0x0, 0x0,  // Size of WAVE section chunck.
+                    0x1, 0x0,             // Wave type format.
+                    0x1, 0x0,             // Mono or stereo.
+                    0x44, 0xac, 0x0, 0x0, // Sample rate.
+                    0x44, 0xac, 0x0, 0x0, // Bytes per second.
+                    0x1, 0x0,             // Block alignment.
+                    0x8, 0x0,             // Bits per sample.
+                    'd', 'a', 't', 'a',   // "data" Description header.
+                    0x0, 0x0, 0x0, 0x0 }; // Size of data chunk.
+
+
+// Public functions.
+void outb(int value, int port) {
+  fprintf(OUT, "%c", value);
+}//outb
+
+// Write the WAV header.
+void writewavheader(void) {
+  int i = 0;
+
+  for (i = 0; i < 44; i++)
+    fprintf(OUT, "%c", header[i]);
+}//writewavheader
+
+// Set the filesizes in the WAV header. 
+void setheader(void) {
+  dword temp = fs;
+  int i = 0;
+
+  fseek(OUT, 4, SEEK_SET);
+  fprintf(OUT, "%c", (temp & 0xff) + 36);
+  fseek(OUT, 40, SEEK_SET);
+  fprintf(OUT, "%c", temp & 0xff);
+  temp >>= 8;
+  for (i = 1; i < 4; i++) {
+    fseek(OUT, 4 + i, SEEK_SET);
+    fprintf(OUT, "%c", temp & 0xff);
+    fseek(OUT, 40 + i, SEEK_SET);
+    fprintf(OUT, "%c", temp & 0xff);
+    temp >>= 8;
+  }//for
+}//setheader