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--- interrogating_20the_20audio_20mixer [2018/03/31 13:19] – external edit 127.0.0.1
+++ interrogating_20the_20audio_20mixer [2024/01/05 00:22] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 =====Interrogating the audio mixer=====
-//by Richard Russell, June 2010//\\ \\ **Note: On Windows Vista and Windows 7 each running application has its own independent audio mixer. The code listed here will work correctly, but the mixer interrogated is that for the specific application.**\\ \\  The article [[/Controlling%20the%20audio%20mixer|Controlling the audio mixer]] explains how to control the volume of Wave, Synth and CD outputs and the level of CD, Microphone and Line inputs (and often several others) using the **FN_mixerset** routine. The **FN_mixerget** function listed at the end of this article allows you to interrogate the settings of the various mixer controls. The function should be called using code similar to the following:\\
+//by Richard Russell, June 2010//\\ \\ **Note: On Windows Vista and Windows 7 each running application has its own independent audio mixer. The code listed here will work correctly, but the mixer interrogated is that for the specific application.**\\ \\  The article [[/Controlling%20the%20audio%20mixer|Controlling the audio mixer]] explains how to control the volume of Wave, Synth and CD outputs and the level of CD, Microphone and Line inputs (and often several others) using the **FN_mixerset** routine. The **FN_mixerget** function listed at the end of this article allows you to interrogate the settings of the various mixer controls. The function should be called using code similar to the following:
+<code bb4w>
         setting% = FN_mixerget(Dest%, Source%, Control%)
-The routine returns the current setting of the control (typically 0-65535 for Volume).\\ \\  The parameters are as follows:\\ \\
+</code>
+The routine returns the current setting of the control (typically 0-65535 for Volume).\\ \\  The parameters are as follows:
   * **"Dest%"** - The destination for the control, which will generally be either the **Speaker Output** (= **4**) or the **Recording Input** (= **7**).
   * **"Source%"** - The audio source for the control, for example the **Line Input** (= **&1002**), **Microphone** (= **&1003**), **Synthesizer** (= **&1004**), **CD** (= **&1005**) or **Wave Output** (= **&1008**).
   * **"Control%"** - The control type, which will generally be **Volume** (= **&50030001**).
-\\  For other possible values consult the Microsoft documentation.\\ \\  So for example to interrogate the **Microphone recording level** you could use code like this:\\
+For other possible values consult the Microsoft documentation.\\ \\  So for example to interrogate the **Microphone recording level** you could use code like this:
+<code bb4w>
         miclevel% = FN_mixerget(7, &1003, &50030001)
-To read the **CD Player output volume**:\\
+</code>
+To read the **CD Player output volume**:
+<code bb4w>
         cdvolume% = FN_mixerget(4, &1005, &50030001)
-To read a **Master Volume** setting (which does not have a specific source) set the **"Source%"** parameter to zero. So to discover the **Master speaker volume** you could do:\\
+</code>
+To read a **Master Volume** setting (which does not have a specific source) set the **"Source%"** parameter to zero. So to discover the **Master speaker volume** you could do:
+<code bb4w>
         master% = FN_mixerget(4, 0, &50030001)
-Finally here is the code for **FN_mixerget** itself:\\
+</code>
+Finally here is the code for **FN_mixerget** itself:
+<code bb4w>
         DEF FN_mixerget(dest%, source%, ctrl%)
         LOCAL hmx%, res%, ndevs%, dev%, src%, level%, MixerLine{}
@@ Line 103: / Line 122: @@
         = MixerControlDetailsData.dwValue%
+</code>