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Added define OUTPUT_VOLUME_CONTROL which disables output volume control - both in the descriptors and processing. NOTE: Still could be extended to disable volume in MIXER

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This commit is contained in:
Ross Owen
2014-04-17 14:14:05 +01:00
parent ff4cd84781
commit 641fbdfca6
3 changed files with 34 additions and 15 deletions
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30
module_usb_audio/endpoint0/descriptors.h
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@@ -840,7 +840,9 @@ typedef struct
#ifdef OUTPUT
/* Output path */
USB_Descriptor_Audio_InputTerminal_t Audio_Out_InputTerminal;
#if(OUTPUT_VOLUME_CONTROL==1)
USB_Descriptor_Audio_FeatureUnit_Out_t Audio_Out_FeatureUnit;
#endif
USB_Descriptor_Audio_OutputTerminal_t Audio_Out_OutputTerminal;
#endif
#ifdef INPUT
@@ -1066,7 +1068,7 @@ USB_Config_Descriptor_Audio2_t cfgDesc_Audio2=
.bDescriptorSubType = UAC_CS_AC_INTERFACE_SUBTYPE_CLOCK_SELECTOR,
.bClockID = ID_CLKSEL,
.bNrPins = NUM_CLOCKS,
ID_CLKSRC_INT, /* baCSourceID */
.baCSourceId[0] = ID_CLKSRC_INT, /* baCSourceID */
#ifdef SPDIF_RX
ID_CLKSRC_SPDIF, /* baCSourceID */
@@ -1083,19 +1085,20 @@ USB_Config_Descriptor_Audio2_t cfgDesc_Audio2=
.Audio_Out_InputTerminal =
{
.bLength = sizeof(USB_Descriptor_Audio_InputTerminal_t),
UAC_CS_DESCTYPE_INTERFACE, /* 1 bDescriptorType */
UAC_CS_AC_INTERFACE_SUBTYPE_INPUT_TERMINAL, /* 2 bDescriptorSubType: INPUT_TERMINAL */
ID_IT_USB, /* 3 bTerminalID */
USB_TERMTYPE_USB_STREAMING, /* 5 wTerminalType: USB Streaming */
0x00, /* 6 bAssocTerminal */
ID_CLKSEL, /* 7 bCSourceID: ID of Clock Entity */
NUM_USB_CHAN_OUT, /* 8 bNrChannels */
0x00000000, /* 9 bmChannelConfig TODO. Set me! */
.bDescriptorType = UAC_CS_DESCTYPE_INTERFACE,
.bDescriptorSubtype = UAC_CS_AC_INTERFACE_SUBTYPE_INPUT_TERMINAL,
.bTerminalID = ID_IT_USB,
.wTerminalType = USB_TERMTYPE_USB_STREAMING,
.bAssocTerminal = 0x00,
.bCSourceID = ID_CLKSEL,
.bNrChannels = NUM_USB_CHAN_OUT,
.bmChannelConfig = 0x00000000, /* TODO. Set me! */
.iChannelNames = offsetof(StringDescTable_t, outputChanStr_1)/sizeof(char *),
0x0000, /* 14 bmControls */
6, /* 16 iTerminal */
.bmControls = 0x0000,
.iTerminal = offsetof(StringDescTable_t, usbInputTermStr_Audio2)/sizeof(char *)
},
#if(OUTPUT_VOLUME_CONTROL == 1)
/* Feature Unit Descriptor */
.Audio_Out_FeatureUnit =
{
@@ -1170,6 +1173,7 @@ USB_Config_Descriptor_Audio2_t cfgDesc_Audio2=
},
0, /* 60 iFeature */
},
#endif
/* Output Terminal Descriptor (Audio) */
.Audio_Out_OutputTerminal =
@@ -1180,7 +1184,11 @@ USB_Config_Descriptor_Audio2_t cfgDesc_Audio2=
ID_OT_AUD, /* 3 bTerminalID */
.wTerminalType = UAC_TT_OUTPUT_TERMTYPE_SPEAKER,
0x00, /* 6 bAssocTerminal */
#if (OUTPUT_VOLUME_CONTROL == 1)
FU_USBOUT, /* 7 bSourceID Connect to analog input feature unit*/
#else
ID_IT_USB, /* 7 bSourceID Connect to analog input feature unit*/
#endif
ID_CLKSEL, /* 8 bCSourceUD */
0x0000, /* 9 bmControls */
0, /* 11 iTerminal */