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https://github.com/reactos/reactos.git
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358 lines
10 KiB
C
358 lines
10 KiB
C
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/*
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS Multimedia
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* FILE: lib/mmdrv/midi.c
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* PURPOSE: Multimedia User Mode Driver
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* PROGRAMMER: Andrew Greenwood
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* UPDATE HISTORY:
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* Jan 30, 2004: Imported into ReactOS tree
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*/
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#include "mmdrv.h"
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#include "wave.h"
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#define NDEBUG
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#include <debug.h>
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// MIDI device instance information
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//
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#define LOCAL_DATA_SIZE 20
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typedef struct _LOCALMIDIHDR {
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OVERLAPPED Ovl;
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DWORD BytesReturned;
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struct _LOCALMIDIHDR *lpNext;
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BOOL Done;
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PVOID pClient;
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// MIDI_DD_INPUT_DATA MidiData;
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BYTE ExtraData[LOCAL_DATA_SIZE - sizeof(ULONG)];
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} LOCALMIDIHDR, *PLOCALMIDIHDR;
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#define LOCAL_MIDI_BUFFERS 8
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typedef struct {
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BOOL fMidiInStarted;
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DWORD dwMsg;
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DWORD dwCurData;
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BYTE status;
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BOOLEAN fSysex;
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BOOLEAN Bad;
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BYTE bBytesLeft;
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BYTE bBytePos;
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DWORD dwCurTime;
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DWORD dwMsgTime;
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PLOCALMIDIHDR DeviceQueue;
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LOCALMIDIHDR
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Bufs[LOCAL_MIDI_BUFFERS];
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} LOCALMIDIDATA, *PLOCALMIDIDATA;
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typedef struct tag_MIDIALLOC {
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struct tag_MIDIALLOC *Next; // Chain of devices
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UINT DeviceNumber; // Number of device
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UINT DeviceType; // MidiInput or MidiOutput
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DWORD dwCallback; // client's callback
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DWORD dwInstance; // client's instance data
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HMIDI hMidi; // handle for stream
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HANDLE DeviceHandle; // Midi device handle
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LPMIDIHDR lpMIQueue; // Buffers sent to device
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// This is only required so that
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// CLOSE knows when things have
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// really finished.
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// notify. This is only accessed
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// on the device thread and its
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// apcs so does not need any
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// synchronized access.
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HANDLE Event; // Event for driver syncrhonization
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// and notification of auxiliary
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// task operation completion.
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// MIDITHREADFUNCTION AuxFunction; // Function for thread to perform
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union {
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LPMIDIHDR pHdr; // Buffer to pass in aux task
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ULONG State; // State to set
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struct {
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ULONG Function; // IOCTL to use
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PBYTE pData; // Data to set or get
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ULONG DataLen; // Length of data
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} GetSetData;
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} AuxParam;
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// 0 means terminate task.
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HANDLE ThreadHandle; // Handle for termination ONLY
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HANDLE AuxEvent1; // Aux thread waits on this
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HANDLE AuxEvent2; // Aux thread caller waits on this
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DWORD AuxReturnCode; // Return code from Aux task
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DWORD dwFlags; // Open flags
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PLOCALMIDIDATA Mid; // Extra midi input structures
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int l; // Helper global for modMidiLength
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} MIDIALLOC, *PMIDIALLOC;
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PMIDIALLOC MidiHandleList; // Our chain of wave handles
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static DWORD OpenMidiDevice(UINT DeviceType, DWORD ID, DWORD User, DWORD Param1, DWORD Param2)
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{
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PMIDIALLOC pClient = NULL;
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MMRESULT Result = MMSYSERR_NOERROR;
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// Check ID?
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DPRINT("OpenMidiDevice()\n");
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switch(DeviceType)
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{
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case MidiOutDevice :
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pClient = (PMIDIALLOC) HeapAlloc(Heap, 0, sizeof(MIDIALLOC));
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if ( pClient ) memset(pClient, 0, sizeof(MIDIALLOC));
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break;
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case MidiInDevice :
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pClient = (PMIDIALLOC) HeapAlloc(Heap, 0, sizeof(MIDIALLOC) + sizeof(LOCALMIDIDATA));
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if ( pClient ) memset(pClient, 0, sizeof(MIDIALLOC) + sizeof(LOCALMIDIDATA));
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break;
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};
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if ( !pClient )
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return MMSYSERR_NOMEM;
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if (DeviceType == MidiInDevice)
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{
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int i;
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pClient->Mid = (PLOCALMIDIDATA)(pClient + 1);
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for (i = 0 ;i < LOCAL_MIDI_BUFFERS ; i++)
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{
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pClient->Mid->Bufs[i].pClient = pClient;
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}
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}
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pClient->DeviceType = DeviceType;
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pClient->dwCallback = ((LPMIDIOPENDESC)Param1)->dwCallback;
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pClient->dwInstance = ((LPMIDIOPENDESC)Param1)->dwInstance;
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pClient->hMidi = ((LPMIDIOPENDESC)Param1)->hMidi;
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pClient->dwFlags = Param2;
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Result = OpenDevice(DeviceType, ID, &pClient->DeviceHandle, (GENERIC_READ | GENERIC_WRITE));
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if ( Result != MMSYSERR_NOERROR )
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{
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// cleanup
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return Result;
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}
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pClient->Event = CreateEvent(NULL, FALSE, FALSE, NULL);
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if ( !pClient->Event )
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{
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// cleanup
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return MMSYSERR_NOMEM;
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}
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if (DeviceType == MidiInDevice)
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{
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pClient->AuxEvent1 = CreateEvent(NULL, FALSE, FALSE, NULL);
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if (pClient->AuxEvent1 == NULL)
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{
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// cleanup
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return MMSYSERR_NOMEM;
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}
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pClient->AuxEvent2 = CreateEvent(NULL, FALSE, FALSE, NULL);
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if (pClient->AuxEvent2 == NULL)
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{
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// cleanup
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return MMSYSERR_NOMEM;
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}
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// TaskCreate
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WaitForSingleObject(pClient->AuxEvent2, INFINITE);
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}
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PMIDIALLOC *pUserHandle;
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pUserHandle = (PMIDIALLOC*) User;
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*pUserHandle = pClient;
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// callback
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return MMSYSERR_NOERROR;
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}
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static DWORD WriteMidi(PBYTE pData, ULONG Length, PMIDIALLOC pClient)
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{
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DWORD BytesReturned;
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DPRINT("IOCTL_MIDI_PLAY == %d [%x]\n", IOCTL_MIDI_PLAY, IOCTL_MIDI_PLAY);
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if ( !DeviceIoControl(pClient->DeviceHandle, IOCTL_MIDI_PLAY, (PVOID)pData,
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Length, NULL, 0, &BytesReturned, NULL))
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return TranslateStatus();
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return MMSYSERR_NOERROR;
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}
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static int GetMidiLength(PMIDIALLOC pClient, BYTE b)
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{
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if (b >= 0xF8)
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{
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// Realtime message - leave running status
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return 1; // Write one byte
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}
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switch (b)
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{
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case 0xF0: case 0xF4: case 0xF5: case 0xF6: case 0xF7:
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pClient->l = 1;
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return pClient->l;
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case 0xF1: case 0xF3:
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pClient->l = 2;
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return pClient->l;
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case 0xF2:
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pClient->l = 3;
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return pClient->l;
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}
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switch (b & 0xF0)
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{
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case 0x80: case 0x90: case 0xA0: case 0xB0: case 0xE0:
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pClient->l = 3;
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return pClient->l;
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case 0xC0: case 0xD0:
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pClient->l = 2;
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return pClient->l;
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}
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return (pClient->l - 1); // uses previous value if data byte (running status)
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}
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/* ----------------------------------------------------------------------------
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Exported functions
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----------------------------------------------------------------------------- */
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APIENTRY DWORD midMessage(DWORD dwId, DWORD dwMessage, DWORD dwUser, DWORD dwParam1, DWORD dwParam2)
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{
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DPRINT("midMessage\n");
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return MMSYSERR_NOERROR;
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switch (dwMessage) {
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case MIDM_GETNUMDEVS:
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DPRINT("MIDM_GETNUMDEVS");
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return GetDeviceCount(MidiInDevice);
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case MIDM_GETDEVCAPS:
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DPRINT("MIDM_GETDEVCAPS");
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return GetDeviceCapabilities(dwId, MidiInDevice, (LPBYTE)dwParam1, (DWORD)dwParam2);
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case MIDM_OPEN:
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DPRINT("MIDM_OPEN");
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return MMSYSERR_NOERROR;
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case MIDM_CLOSE:
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DPRINT("MIDM_CLOSE");
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return MMSYSERR_NOERROR;
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case MIDM_ADDBUFFER:
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DPRINT("MIDM_ADDBUFFER");
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return MMSYSERR_NOERROR;
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case MIDM_STOP:
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DPRINT("MIDM_PAUSE");
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return MMSYSERR_NOERROR;
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case MIDM_START:
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DPRINT("MIDM_RESTART");
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return MMSYSERR_NOERROR;
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case MIDM_RESET:
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DPRINT("MIDM_RESET");
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return MMSYSERR_NOERROR;
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default:
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return MMSYSERR_NOTSUPPORTED;
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}
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// the function should never get to this point
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//FIXME: Would it be wise to assert here?
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return MMSYSERR_NOTSUPPORTED;
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}
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APIENTRY DWORD modMessage(DWORD ID, DWORD Message, DWORD User, DWORD Param1, DWORD Param2)
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{
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DPRINT("modMessage\n");
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switch(Message)
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{
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case MODM_GETNUMDEVS:
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DPRINT("MODM_GETNUMDEVS == %d\n", (int)GetDeviceCount(MidiOutDevice));
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return GetDeviceCount(MidiOutDevice);
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case MODM_GETDEVCAPS:
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DPRINT("MODM_GETDEVCAPS");
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return GetDeviceCapabilities(ID, MidiOutDevice, (LPBYTE)Param1, (DWORD)Param2);
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case MODM_OPEN :
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return OpenMidiDevice(MidiOutDevice, ID, User, Param1, Param2);
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case MODM_CLOSE:
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DPRINT("MODM_CLOSE");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_DATA:
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DPRINT("MODM_DATA");
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int i;
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BYTE b[4];
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for (i = 0; i < 4; i ++) {
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b[i] = (BYTE)(Param1 % 256);
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Param1 /= 256;
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}
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return WriteMidi(b, GetMidiLength((PMIDIALLOC)User, b[0]),
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(PMIDIALLOC)User);
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case MODM_LONGDATA:
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DPRINT("MODM_LONGDATA");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_RESET:
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DPRINT("MODM_RESET");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_SETVOLUME:
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DPRINT("MODM_SETVOLUME");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_GETVOLUME:
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DPRINT("MODM_GETVOLUME");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_CACHEPATCHES:
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DPRINT("MODM_CACHEPATCHES");
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return MMSYSERR_NOTSUPPORTED;
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case MODM_CACHEDRUMPATCHES:
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DPRINT("MODM_CACHEDRUMPATCHES");
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return MMSYSERR_NOTSUPPORTED;
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};
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return MMSYSERR_NOTSUPPORTED;
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}
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