Changeset 89289 in vbox for trunk/src/VBox/Devices/Audio

Timestamp:

May 26, 2021 9:48:37 AM (4 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

144635

Message:

Audio/ValKit: Added AudioTestToneInit(). bugref:10008

Location:

trunk/src/VBox/Devices/Audio

Files:

• AudioTest.cpp (modified) (2 diffs)
• AudioTest.h (modified) (1 diff)

trunk/src/VBox/Devices/Audio/AudioTest.cpp

@@ -86 +86 @@
 
 /**
- * Initializes a test tone by picking a random but well-known frequency (in Hz).
+ * Initializes a test tone with a specific frequency (in Hz).
  *
  * @returns Randomly picked frequency (in Hz).
  * @param   pTone               Pointer to test tone to initialize.
  * @param   pProps              PCM properties to use for the test tone.
- */
-double AudioTestToneInitRandom(PAUDIOTESTTONE pTone, PPDMAUDIOPCMPROPS pProps)
+ * @þaram   dbFreq              Frequency (in Hz) to initialize tone with.
+ */
+void AudioTestToneInit(PAUDIOTESTTONE pTone, PPDMAUDIOPCMPROPS pProps, double dbFreq)
 {
     /* Pick a frequency from our selection, so that every time a recording starts
      * we'll hopfully generate a different note. */
-    pTone->rdFreqHz = s_aAudioTestToneFreqsHz[RTRandU32Ex(0, RT_ELEMENTS(s_aAudioTestToneFreqsHz) - 1)];
+    pTone->rdFreqHz = dbFreq;
     pTone->rdFixed  = 2.0 * M_PI * pTone->rdFreqHz / PDMAudioPropsHz(pProps);
     pTone->uSample  = 0;
@@ -103 +104 @@
 
     pTone->enmType = AUDIOTESTTONETYPE_SINE; /* Only type implemented so far. */
+}
+
+/**
+ * Initializes a test tone by picking a random but well-known frequency (in Hz).
+ *
+ * @returns Randomly picked frequency (in Hz).
+ * @param   pTone               Pointer to test tone to initialize.
+ * @param   pProps              PCM properties to use for the test tone.
+ */
+double AudioTestToneInitRandom(PAUDIOTESTTONE pTone, PPDMAUDIOPCMPROPS pProps)
+{
+    AudioTestToneInit(pTone, pProps,
+                      /* Pick a frequency from our selection, so that every time a recording starts
+                       * we'll hopfully generate a different note. */
+                      s_aAudioTestToneFreqsHz[RTRandU32Ex(0, RT_ELEMENTS(s_aAudioTestToneFreqsHz) - 1)]);
 
     return pTone->rdFreqHz;

trunk/src/VBox/Devices/Audio/AudioTest.h

@@ -293 +293 @@
 
 
+void   AudioTestToneInit(PAUDIOTESTTONE pTone, PPDMAUDIOPCMPROPS pProps, double dbFreq);
 double AudioTestToneInitRandom(PAUDIOTESTTONE pTone, PPDMAUDIOPCMPROPS pProps);
 int    AudioTestToneGenerate(PAUDIOTESTTONE pTone, void *pvBuf, uint32_t cbBuf, uint32_t *pcbWritten);