Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers...

[reactos.git] / drivers / multimedia / audio / sndblst.old / card.c

diff --git a/drivers/multimedia/audio/sndblst.old/card.c b/drivers/multimedia/audio/sndblst.old/card.c
new file mode 100644 (file)
index 0000000..267d55f
--- /dev/null
+++ b/drivers/multimedia/audio/sndblst.old/card.c
@@ -0,0 +1,69 @@
+/*
+    Sound card operations
+
+    http://www.cae.wisc.edu/~brodskye/sb16doc/sb16doc.html
+*/
+
+#include <ntddk.h>
+#include "sndblst.h"
+
+VOID SetOutputSampleRate(ULONG BasePort, ULONG SampleRate)
+{
+    // This only works for DSP v4.xx ONLY - need a workaround!
+    DPRINT("Setting output sample rate\n");
+
+    // WAIT
+//    if (! WaitToSend(BasePort))
+//        return;
+
+    SB_WRITE_BYTE(BasePort, SB_SET_OUTPUT_RATE);
+    SB_WRITE_BYTE(BasePort, SampleRate / 256);  // high
+    SB_WRITE_BYTE(BasePort, SampleRate % 256);  // low
+}
+
+
+VOID EnableSpeaker(ULONG BasePort, BOOLEAN SpeakerOn)
+{
+    DPRINT("Setting speaker status %d\n", SpeakerOn);
+
+//    if (! WaitForWrite(BasePort))
+//        return;
+
+    SB_WRITE_BYTE(BasePort, SpeakerOn ? SB_ENABLE_SPEAKER : SB_DISABLE_SPEAKER);
+}
+
+
+BOOLEAN IsSpeakerEnabled(ULONG BasePort)
+{
+    DPRINT("Obtaining speaker status\n");
+
+//    if (! WaitToSend(BasePort))
+//        return FALSE;
+
+    SB_WRITE_BYTE(BasePort, SB_GET_SPEAKER_STATUS);
+    if (! WaitToReceive(BasePort))
+        return FALSE;
+
+    return SB_READ_DATA(BasePort) == 0xff;
+}
+
+
+VOID BeginPlayback(ULONG BasePort, ULONG BitDepth, ULONG Channels, ULONG BlockSize)
+{
+    DPRINT("BeginPlayback(%d, %d, %d, %d)\n", BasePort, BitDepth, Channels, BlockSize);
+
+//    switch(BitDepth)
+//    {
+//        case 8 :    Command = 0xc0; break;
+//        case 16 :   Command = 0xb0; break;  // Make sure we support it
+//        default :   Command = 0xc0;
+//    }
+
+    DPRINT("Initiating playback\n");
+
+    // TEMPORARY:
+    SB_WRITE_BYTE(BasePort, 0xc6);
+    SB_WRITE_BYTE(BasePort, 0); // mode - TEMPORARY
+    SB_WRITE_BYTE(BasePort, BlockSize % 256);
+    SB_WRITE_BYTE(BasePort, BlockSize / 256);
+}