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5<TITLE>AX Voice Parameters</TITLE>
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11<H1 align="left">AX Voice Parameters</H1>
12<H2>Overview</H2>
13<UL>
14<LI>Use <code>AXSetVoice*</code> to set voice parameters.
15<LI>Voice parameters can also be set directly using the application in the <code>axvpb</code> data structure. This method can save a few CPU cycles. However, you must assert the appropriate synchronization flags in <code>axvpb.sync</code>. Some parameters depend on other parameter settings for proper operation.
16</UL>
17<H2>Example</H2>
18<BLOCKQUOTE>
19<PRE><code>#include &lt;revolution.h&gt;
20
21#ifdef SET_PARAMS_WITH_AX_API
22
23AXPBADDR        addr;
24
25addr.loopFlag           = AXPBADDR_LOOP_ON;
26addr.format             = AX_PB_FORMAT_ADPCM;
27addr.loopAddressHi      = (u16)(loopAddress &gt;&gt; 16);
28addr.loopAddressLo      = (u16)(loopAddress &amp; 0xffff);
29addr.endAddressHi       = (u16)(endAddress &gt;&gt; 16);
30addr.endAddressLo       = (u16)(endAddress &amp; 0xffff);
31addr.currentAddressHi   = (u16)(startAddress &gt;&gt; 16);
32addr.currentAddressLo   = (u16)(startAddress &amp; 0xffff);
33
34AXSetVoiceAddr(axvpb, &amp;addr);
35
36#else
37
38int old = OSDisableInterrupts();
39
40axvpb-&gt;addr.loopFlag           = AXPBADDR_LOOP_ON;
41axvpb-&gt;addr.format             = AX_PB_FORMAT_ADPCM;
42axvpb-&gt;addr.loopAddressHi      = (u16)(loopAddress &gt;&gt; 16);
43axvpb-&gt;addr.loopAddressLo      = (u16)(loopAddress &amp; 0xffff);
44axvpb-&gt;addr.endAddressHi       = (u16)(endAddress &gt;&gt; 16);
45axvpb-&gt;addr.endAddressLo       = (u16)(endAddress &amp; 0xffff);
46axvpb-&gt;addr.currentAddressHi   = (u16)(startAddress &gt;&gt; 16);
47axvpb-&gt;addr.currentAddressLo   = (u16)(startAddress &amp; 0xffff);
48
49axvpb-&gt;sync |= AX_SYNC_USER_ADDR;
50
51OSRestoreInterrupts(old);
52
53#endif
54
55// This is only a code example. // You must also set the
56// loop context for ADPCM-encoded sounds.</CODE></PRE>
57</BLOCKQUOTE>
58<H2>Revision History</H2>
59<P>03/01/2006 Initial version.</P>
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