/*

 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#define USE_ERROR

#define USE_TRACE

#include "PLATFORM_API_WinOS_Util.h"

#if USE_PLATFORM_MIDI_OUT == TRUE

#ifdef USE_ERROR

#include <stdio.h>

#define MIDIOUT_CHECK_ERROR  { \

        if (err != MMSYSERR_NOERROR) \

        }

#else

#define MIDIOUT_CHECK_ERROR

#endif

/* *************************** MidiOutDeviceProvider implementation *********************************** */

/* not thread safe */

static char winMidiOutErrMsg[WIN_MAX_ERROR_LEN];

char* MIDI_OUT_GetErrorStr(INT32 err) {

    winMidiOutErrMsg[0] = 0;

    midiOutGetErrorText((MMRESULT) err, winMidiOutErrMsg, WIN_MAX_ERROR_LEN);

    return winMidiOutErrMsg;

}

INT32 MIDI_OUT_GetNumDevices() {

    // add one for the MIDI_MAPPER

    // we want to return it first so it'll be the default, so we

    // decrement each deviceID for these methods....

    return (INT32) (midiOutGetNumDevs() + 1);

}

INT32 getMidiOutCaps(INT32 deviceID, MIDIOUTCAPS* caps, INT32* err) {

    if (deviceID == 0) {

        deviceID = MIDI_MAPPER;

    } else {

        deviceID--;

    }

    (*err) = (INT32) midiOutGetDevCaps(deviceID, caps, sizeof(MIDIOUTCAPS));

    return ((*err) == MMSYSERR_NOERROR);

}

INT32 MIDI_OUT_GetDeviceName(INT32 deviceID, char *name, UINT32 nameLength) {

    MIDIOUTCAPS midiOutCaps;

    INT32 err;

    if (getMidiOutCaps(deviceID, &midiOutCaps, &err)) {

        strncpy(name, midiOutCaps.szPname, nameLength-1);

        name[nameLength-1] = 0;

        return MIDI_SUCCESS;

    }

    MIDIOUT_CHECK_ERROR;

    return err;

}

INT32 MIDI_OUT_GetDeviceVendor(INT32 deviceID, char *name, UINT32 nameLength) {

    return MIDI_NOT_SUPPORTED;

}

INT32 MIDI_OUT_GetDeviceDescription(INT32 deviceID, char *name, UINT32 nameLength) {

    MIDIOUTCAPS midiOutCaps;

    char *desc;

    INT32 err;

    if (getMidiOutCaps(deviceID, &midiOutCaps, &err)) {

        int tech = (int)midiOutCaps.wTechnology;

        switch(tech) {

        case MOD_MIDIPORT:

            desc = "External MIDI Port";

            break;

        case MOD_SQSYNTH:

            desc = "Internal square wave synthesizer";

            break;

        case MOD_FMSYNTH:

            desc = "Internal FM synthesizer";

            break;

        case MOD_SYNTH:

            desc = "Internal synthesizer (generic)";

            break;

        case MOD_MAPPER:

            desc = "Windows MIDI_MAPPER";

            break;

        case 7 /* MOD_SWSYNTH*/:

            desc = "Internal software synthesizer";

            break;

        default:

            return MIDI_NOT_SUPPORTED;

        }

        strncpy(name, desc, nameLength-1);

        name[nameLength-1] = 0;

        return MIDI_SUCCESS;

    }

    return err;

}

INT32 MIDI_OUT_GetDeviceVersion(INT32 deviceID, char *name, UINT32 nameLength) {

    MIDIOUTCAPS midiOutCaps;

    INT32 err;

    if (getMidiOutCaps(deviceID, &midiOutCaps, &err) && nameLength>7) {

        sprintf(name, "%d.%d", (midiOutCaps.vDriverVersion & 0xFF00) >> 8, midiOutCaps.vDriverVersion & 0xFF);

        return MIDI_SUCCESS;

    }

    MIDIOUT_CHECK_ERROR;

    return err;

}

/* *************************** MidiOutDevice implementation ***************************************** */

INT32 unprepareLongBuffers(MidiDeviceHandle* handle) {

    SysExQueue* sysex;

    MMRESULT err = MMSYSERR_NOERROR;

    int i;

    if (!handle || !handle->deviceHandle || !handle->longBuffers) {

        ERROR0("MIDI_OUT_unprepareLongBuffers: handle, deviceHandle, or longBuffers == NULL\n");

        return MIDI_INVALID_HANDLE;

    }

    sysex = (SysExQueue*) handle->longBuffers;

    for (i = 0; i<sysex->count; i++) {

        MIDIHDR* hdr = &(sysex->header[i]);

        if (hdr->dwFlags) {

            err = midiOutUnprepareHeader((HMIDIOUT) handle->deviceHandle, hdr, sizeof(MIDIHDR));

        }

    }

    MIDIOUT_CHECK_ERROR;

    return (INT32) err;

}

INT32 freeLongBuffer(MIDIHDR* hdr, HMIDIOUT deviceHandle, INT32 minToLeaveData) {

    MMRESULT err = MMSYSERR_NOERROR;

    if (!hdr) {

        ERROR0("MIDI_OUT_freeLongBuffer: hdr == NULL\n");

        return MIDI_INVALID_HANDLE;

    }

    if (hdr->dwFlags && deviceHandle) {

        err = midiOutUnprepareHeader(deviceHandle, hdr, sizeof(MIDIHDR));

    }

    if (hdr->lpData && (((INT32) hdr->dwBufferLength) < minToLeaveData || minToLeaveData < 0)) {

        free(hdr->lpData);

        hdr->lpData=NULL;

        hdr->dwBufferLength=0;

    }

    hdr->dwBytesRecorded=0;

    hdr->dwFlags=0;

    return (INT32) err;

}

INT32 freeLongBuffers(MidiDeviceHandle* handle) {

    SysExQueue* sysex;

    MMRESULT err = MMSYSERR_NOERROR;

    int i;

    if (!handle || !handle->longBuffers) {

        ERROR0("MIDI_OUT_freeLongBuffers: handle or longBuffers == NULL\n");

        return MIDI_INVALID_HANDLE;

    }

    sysex = (SysExQueue*) handle->longBuffers;

    for (i = 0; i<sysex->count; i++) {

        err = freeLongBuffer(&(sysex->header[i]), (HMIDIOUT) handle->deviceHandle, -1);

    }

    MIDIOUT_CHECK_ERROR;

    return (INT32) err;

}

INT32 MIDI_OUT_OpenDevice(INT32 deviceID, MidiDeviceHandle** handle) {

    MMRESULT err;

    TRACE1(">> MIDI_OUT_OpenDevice: deviceID: %d\n", deviceID);

    if (deviceID == 0) {

        deviceID = MIDI_MAPPER;

    } else {

        deviceID--;

    }

#ifdef USE_ERROR

    setvbuf(stdout, NULL, (int)_IONBF, 0);

    setvbuf(stderr, NULL, (int)_IONBF, 0);

#endif

    (*handle) = (MidiDeviceHandle*) malloc(sizeof(MidiDeviceHandle));

    if (!(*handle)) {

        ERROR0("ERROR: MIDI_OUT_OpenDevice: out of memory\n");

        return MIDI_OUT_OF_MEMORY;

    }

    memset(*handle, 0, sizeof(MidiDeviceHandle));

    // create long buffer queue

    if (!MIDI_WinCreateEmptyLongBufferQueue(*handle, MIDI_OUT_LONG_QUEUE_SIZE)) {

        ERROR0("ERROR: MIDI_OUT_OpenDevice: could not create long Buffers\n");

        free(*handle);

        (*handle) = NULL;

        return MIDI_OUT_OF_MEMORY;

    }

    // create notification event

    (*handle)->platformData = (void*) CreateEvent(NULL, FALSE /*manual reset*/, FALSE /*signaled*/, NULL);

    if (!(*handle)->platformData) {

        ERROR0("ERROR: MIDI_OUT_StartDevice: could not create event\n");

        MIDI_WinDestroyLongBufferQueue(*handle);

        free(*handle);

        (*handle) = NULL;

        return MIDI_OUT_OF_MEMORY;

    }

    // finally open the device

    err = midiOutOpen((HMIDIOUT*) &((*handle)->deviceHandle), deviceID,

                      (UINT_PTR) (*handle)->platformData, (UINT_PTR) (*handle), CALLBACK_EVENT);

    if ((err != MMSYSERR_NOERROR) || (!(*handle)->deviceHandle)) {

        /* some devices return non zero, but no error! */

        if (midiOutShortMsg((HMIDIOUT) ((*handle)->deviceHandle),0) == MMSYSERR_INVALHANDLE) {

            MIDIOUT_CHECK_ERROR;

            CloseHandle((HANDLE) (*handle)->platformData);

            MIDI_WinDestroyLongBufferQueue(*handle);

            free(*handle);

            (*handle) = NULL;

            return (INT32) err;

        }

    }

    //$$fb enable high resolution time

    timeBeginPeriod(1);

    MIDI_SetStartTime(*handle);

    TRACE0("<< MIDI_OUT_OpenDevice: succeeded\n");

    return MIDI_SUCCESS;

}

INT32 MIDI_OUT_CloseDevice(MidiDeviceHandle* handle) {

    MMRESULT err = MMSYSERR_NOERROR;

    HANDLE event;

    TRACE0("> MIDI_OUT_CloseDevice\n");

    if (!handle) {

        ERROR0("ERROR: MIDI_OUT_StopDevice: handle is NULL\n");

        return MIDI_INVALID_HANDLE; // failure

    }

    // encourage MIDI_OUT_SendLongMessage to return soon

    event = handle->platformData;

    handle->platformData = NULL;

    if (event) {

        SetEvent(event);

    } else {

        ERROR0("ERROR: MIDI_OUT_StopDevice: event is NULL\n");

    }

    if (handle->deviceHandle) {

        //$$fb disable high resolution time

        timeEndPeriod(1);

        err = midiOutReset((HMIDIOUT) handle->deviceHandle);

    } else {

        ERROR0("ERROR: MIDI_OUT_CloseDevice: deviceHandle is NULL\n");

    }

    // issue a "SUSTAIN OFF" message to each MIDI channel, 0 to 15.

    // "CONTROL CHANGE" is 176, "SUSTAIN CONTROLLER" is 64, and the value is 0.

    // $$fb 2002-04-04: It is responsability of the application developer to

    // leave the device in a consistent state. So I put this in comments

    /*

      for (channel = 0; channel < 16; channel++)

      MIDI_OUT_SendShortMessage(deviceHandle, (unsigned char)(176 + channel), (unsigned char)64, (unsigned char)0, (UINT32)-1);

    */

    if (event) {

        // wait until MIDI_OUT_SendLongMessage has finished

        while (handle->isWaiting) Sleep(0);

    }

    unprepareLongBuffers(handle);

    if (handle->deviceHandle) {

        err = midiOutClose((HMIDIOUT) handle->deviceHandle);

        MIDIOUT_CHECK_ERROR;

        handle->deviceHandle = NULL;

    }

    freeLongBuffers(handle);

    if (event) {

        CloseHandle(event);

    }

    MIDI_WinDestroyLongBufferQueue(handle);

    free(handle);

    TRACE0("< MIDI_OUT_CloseDevice\n");

    return (INT32) err;

}

/* return time stamp in microseconds */

INT64 MIDI_OUT_GetTimeStamp(MidiDeviceHandle* handle) {

    return MIDI_GetTimeStamp(handle);

}

INT32 MIDI_OUT_SendShortMessage(MidiDeviceHandle* handle, UINT32 packedMsg, UINT32 timestamp) {

    MMRESULT err = MMSYSERR_NOERROR;

    TRACE2("> MIDI_OUT_SendShortMessage %x, time: %d\n", packedMsg, timestamp);

    if (!handle) {

        ERROR0("ERROR: MIDI_OUT_SendShortMessage: handle is NULL\n");

        return MIDI_INVALID_HANDLE; // failure

    }

    err = midiOutShortMsg((HMIDIOUT) handle->deviceHandle, packedMsg);

    MIDIOUT_CHECK_ERROR;

    TRACE0("< MIDI_OUT_SendShortMessage\n");

    return (INT32) err;

}

INT32 MIDI_OUT_SendLongMessage(MidiDeviceHandle* handle, UBYTE* data, UINT32 size, UINT32 timestamp) {

    MMRESULT err;

    SysExQueue* sysex;

    MIDIHDR* hdr = NULL;

    INT32 remainingSize;

    int i;

    TRACE2("> MIDI_OUT_SendLongMessage size %d, time: %d\n", size, timestamp);

    if (!handle || !data || !handle->longBuffers) {

        ERROR0("< ERROR: MIDI_OUT_SendLongMessage: handle, data, or longBuffers is NULL\n");

        return MIDI_INVALID_HANDLE; // failure

    }

    if (size == 0) {

        return MIDI_SUCCESS;

    }

    sysex = (SysExQueue*) handle->longBuffers;

    remainingSize = size;

    // send in chunks of 512 bytes

    size = 512;

    while (remainingSize > 0) {

        if (remainingSize < (INT32) size) {

            size = (UINT32) remainingSize;

        }

        while (!hdr && handle->platformData) {

            /* find a non-queued header */

            for (i = 0; i < sysex->count; i++) {

                hdr = &(sysex->header[i]);

                if ((hdr->dwFlags & MHDR_DONE) || (hdr->dwFlags == 0)) {

                    break;

                }

                hdr = NULL;

            }

            /* wait for a buffer to free up */

            if (!hdr && handle->platformData) {

                DWORD res;

                TRACE0(" Need to wait for free buffer\n");

                handle->isWaiting = TRUE;

                res = WaitForSingleObject((HANDLE) handle->platformData, 700);

                handle->isWaiting = FALSE;

                if (res == WAIT_TIMEOUT) {

                    // break out back to Java if no buffer freed up after 700 milliseconds

                    TRACE0("-> TIMEOUT. Need to go back to Java\n");

                    break;

                }

            }

        }

        if (!hdr) {

            // no free buffer

            return MIDI_NOT_SUPPORTED;

        }

        TRACE2("-> sending %d bytes with buffer index=%d\n", (int) size, (int) hdr->dwUser);

        freeLongBuffer(hdr, handle->deviceHandle, (INT32) size);

        if (hdr->lpData == NULL) {

            hdr->lpData = malloc(size);

            hdr->dwBufferLength = size;

        }

        hdr->dwBytesRecorded = size;

        memcpy(hdr->lpData, data, size);

        err = midiOutPrepareHeader((HMIDIOUT) handle->deviceHandle, hdr, sizeof(MIDIHDR));

        if (err != MMSYSERR_NOERROR) {

            freeLongBuffer(hdr, handle->deviceHandle, -1);

            MIDIOUT_CHECK_ERROR;

            return (INT32) err;

        }

        err = midiOutLongMsg((HMIDIOUT) handle->deviceHandle, hdr, sizeof(MIDIHDR));

        if (err != MMSYSERR_NOERROR) {

            freeLongBuffer(hdr, handle->deviceHandle, -1);

            ERROR0("ERROR: MIDI_OUT_SendLongMessage: midiOutLongMsg returned error:\n");

            MIDIOUT_CHECK_ERROR;

            return (INT32) err;

        }

        remainingSize -= size;

        data += size;

    }

    TRACE0("< MIDI_OUT_SendLongMessage success\n");

    return MIDI_SUCCESS;

}

#endif // USE_PLATFORM_MIDI_OUT