Added possibility to run DSP without host audio output, added configure options

[virtualjaguar] / src / dac.cpp

diff --git a/src/dac.cpp b/src/dac.cpp
index f37dd843ba71093171b399dd204e85b7f0f950e1..990a7248b5a7c3fb4ec7152d94d0466d89e288a5 100644 (file)
--- a/src/dac.cpp
+++ b/src/dac.cpp
@@ -57,7 +57,7 @@
 
 static uint32 LeftFIFOHeadPtr, LeftFIFOTailPtr, RightFIFOHeadPtr, RightFIFOTailPtr;
 static SDL_AudioSpec desired;
-static bool SDLSoundInitialized = false;
+static bool SDLSoundInitialized;
 
 // We can get away with using native endian here because we can tell SDL to use the native
 // endian when looking at the sample buffer, i.e., no need to worry about it.
@@ -76,6 +76,14 @@ int GetCalculatedFrequency(void);
 //
 void DACInit(void)
 {
+       SDLSoundInitialized = false;
+
+       if (!vjs.audioEnabled)
+       {
+               WriteLog("DAC: Host audio playback disabled.\n");
+               return;
+       }
+
 //     memory_malloc_secure((void **)&DACBuffer, BUFFER_SIZE * sizeof(uint16), "DAC buffer");
 //     DACBuffer = (uint16 *)memory_malloc(BUFFER_SIZE * sizeof(uint16), "DAC buffer");
 
@@ -207,6 +215,8 @@ void DACWriteWord(uint32 offset, uint16 data, uint32 who/*= UNKNOWN*/)
 {
        if (offset == LTXD + 2)
        {
+               if (!SDLSoundInitialized)
+                       return;
                // Spin until buffer has been drained (for too fast processors!)...
 //Small problem--if Head == 0 and Tail == buffer end, then this will fail... !!! FIX !!!
 //[DONE]
@@ -246,6 +256,8 @@ WriteLog("Tail=%X, Head=%X", ltail, lhead);
        }
        else if (offset == RTXD + 2)
        {
+               if (!SDLSoundInitialized)
+                       return;
 /*
 Here's what's happening now: