114 行
3.8 KiB
C
114 行
3.8 KiB
C
#ifndef cmRtSysMsg_h
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#define cmRtSysMsg_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Reserved DSP message selector id's (second field of all
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// host<->audio system messages)
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enum
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{
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kMidiMsgArraySelRtId = 1000,
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kMidiSysExSelRtId,
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kUiDrvrSelRtId, // cmUiDriverArg_t message to/from the UI driver
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kUiSelRtId, // cmUiDriverArg_t message from the UI mgr to a client
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kUiMstrSelRtId, // indicates a cmDspUiHdr_t msg containing master control information for the audio system
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kStatusSelRtId, // indicates the msg is of type cmRtSysStatus_t
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kNetSyncSelRtId, // sent with a cmDspNetMsg_t object
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kMsgSelRtId, // client defined msg transmitted between threads or network nodes
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};
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typedef struct
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{
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unsigned rtSubIdx;
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unsigned selId; // Message selector id See kXXXSelRtId above
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} cmRtSysMsgHdr_t;
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// All of the UI messages that create a UI control contain an array of integers
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// as in the 'value' field. The array contains the id's associated with
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// the different programmable paramters which are part of the control.
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// For example a slider control has minimum,maximum, step size, and value
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// parameters. The location in the array is hard coded according to the
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// parameters meaning but the actual value of the id is left up to the
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// engine. This allows the engine to use whatever values work best for
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// it on a per instance basis.
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// Header record for all messages between the host and the DSP controllers.
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typedef struct
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{
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cmRtSysMsgHdr_t hdr;
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unsigned devIdx;
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unsigned chIdx;
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bool inFl;
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unsigned ctlId;
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double value;
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} cmRtSysMstr_t;
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// Control id's used to identify the control type of master contols.
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enum
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{
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kSliderUiRtId = 0,
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kMeterUiRtId = 1,
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kMuteUiRtId = 2,
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kToneUiRtId = 3,
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kPassUiRtId = 4
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};
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// Audio sub-system status record - this message can be transmitted to the host at
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// periodic intervals. See cmRtSysStatusNotifyEnable().
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// When transmitted to the host this record acts as the message header.
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// This header is followed by two arrays of doubles containing the input
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// and output meter values associated with the input and output audio devices.
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// Message Layout:
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// [ rtSubIdx kStatusSelId cmRtSysStatus_t iMeterArray[iMeterCnt] oMeterArray[oMeterCnt] ]
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typedef struct
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{
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cmRtSysMsgHdr_t hdr;
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unsigned updateCnt; // count of callbacks from the audio devices.
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unsigned wakeupCnt; // count of times the audio system thread has woken up after the cond. var has been signaled by the audio update thread.
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unsigned msgCbCnt; // count of msgs delivered via cmRtCallback() .
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unsigned audioCbCnt; // count of times the DSP execution was requested via cmRtCallback().
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unsigned iDevIdx; // Input device index
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unsigned oDevIdx; // Output device index
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unsigned overflowCnt; // count of times the audio input buffers overflowed
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unsigned underflowCnt; // count of times the audio output buffers underflowed
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unsigned iMeterCnt; // count of input meter channels
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unsigned oMeterCnt; // count of output meter channels
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} cmRtSysStatus_t;
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typedef struct
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{
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cmRtSysMsgHdr_t hdr;
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unsigned devIdx;
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unsigned portIdx;
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unsigned msgCnt;
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// cmMidiMsg msgArray[msgCnt]
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} cmRtSysMidi_t;
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typedef struct
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{
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cmRtSysMsgHdr_t hdr; // hdr.rtSubIdx = dest rtSubIdx
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// hdr.selId = msg contents
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unsigned dstEndPtId; // = dest endpoint
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unsigned srcEndPtId; // = src endpoint id
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unsigned srcNodeIdx; // = src node index (filled in by receiving cmRtNet mgr)
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// char msg[ msgByteCnt ]
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} cmRtNetMsg_t;
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#ifdef __cplusplus
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}
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#endif
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#endif
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