J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /*****************************************************************************/ |
| 27 | /* |
| 28 | ** Native functions for interfacing Java with the native implementation |
| 29 | ** of PlatformMidi.h's functions. |
| 30 | */ |
| 31 | /*****************************************************************************/ |
| 32 | |
| 33 | #define USE_ERROR |
| 34 | #define USE_TRACE |
| 35 | |
| 36 | |
| 37 | #include <jni.h> |
| 38 | /* for memcpy */ |
| 39 | #include <string.h> |
| 40 | #include "SoundDefs.h" |
| 41 | #include "PlatformMidi.h" |
| 42 | #include "com_sun_media_sound_MidiInDevice.h" |
| 43 | |
| 44 | |
| 45 | JNIEXPORT jlong JNICALL |
| 46 | Java_com_sun_media_sound_MidiInDevice_nOpen(JNIEnv* e, jobject thisObj, jint index) { |
| 47 | |
| 48 | MidiDeviceHandle* deviceHandle = NULL; |
| 49 | INT32 err = MIDI_NOT_SUPPORTED; |
| 50 | |
| 51 | TRACE1("> Java_com_sun_media_sound_MidiInDevice_nOpen: index: %d\n", index); |
| 52 | |
| 53 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 54 | err = MIDI_IN_OpenDevice((INT32) index, &deviceHandle); |
| 55 | #endif |
| 56 | |
| 57 | /* $$mp 2003-08-28: |
| 58 | So far, the return value (err) hasn't been taken into account. |
| 59 | Now, it is also expected to be MIDI_SUCCESS (0). |
| 60 | This works for Linux, but has to be checked on other platforms. |
| 61 | |
| 62 | It would be better to settle on one method of signaling error: |
| 63 | either returned error codes or a NULL handle. If the latter is used, |
| 64 | the return value should be removed from the signature of |
| 65 | MIDI_IN_OpenDevice. |
| 66 | */ |
| 67 | // if we didn't get a valid handle, throw a MidiUnavailableException |
| 68 | if (!deviceHandle || err != MIDI_SUCCESS) { |
| 69 | deviceHandle = NULL; |
| 70 | ERROR0("Java_com_sun_media_sound_MidiInDevice_nOpen: "); |
| 71 | ThrowJavaMessageException(e, JAVA_MIDI_PACKAGE_NAME"/MidiUnavailableException", |
| 72 | MIDI_IN_InternalGetErrorString(err)); |
| 73 | } else { |
| 74 | TRACE0("< Java_com_sun_media_sound_MidiInDevice_nOpen succeeded\n"); |
| 75 | } |
| 76 | return (jlong) (UINT_PTR) deviceHandle; |
| 77 | } |
| 78 | |
| 79 | |
| 80 | JNIEXPORT void JNICALL |
| 81 | Java_com_sun_media_sound_MidiInDevice_nClose(JNIEnv* e, jobject thisObj, jlong deviceHandle) { |
| 82 | |
| 83 | TRACE0("> Java_com_sun_media_sound_MidiInDevice_nClose.\n"); |
| 84 | |
| 85 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 86 | MIDI_IN_CloseDevice((MidiDeviceHandle*) (UINT_PTR) deviceHandle); |
| 87 | #endif |
| 88 | |
| 89 | TRACE0("< Java_com_sun_media_sound_MidiInDevice_nClose succeeded\n"); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | JNIEXPORT void JNICALL |
| 94 | Java_com_sun_media_sound_MidiInDevice_nStart(JNIEnv* e, jobject thisObj, jlong deviceHandle) { |
| 95 | |
| 96 | INT32 err = MIDI_NOT_SUPPORTED; |
| 97 | |
| 98 | TRACE0("> Java_com_sun_media_sound_MidiInDevice_nStart.\n"); |
| 99 | |
| 100 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 101 | err = MIDI_IN_StartDevice((MidiDeviceHandle*) (UINT_PTR) deviceHandle); |
| 102 | #endif |
| 103 | |
| 104 | if (err != MIDI_SUCCESS) { |
| 105 | ERROR0("Java_com_sun_media_sound_MidiInDevice_nStart: "); |
| 106 | ThrowJavaMessageException(e, JAVA_MIDI_PACKAGE_NAME"/MidiUnavailableException", |
| 107 | MIDI_IN_InternalGetErrorString(err)); |
| 108 | } else { |
| 109 | TRACE0("< Java_com_sun_media_sound_MidiInDevice_nStart succeeded\n"); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | |
| 114 | JNIEXPORT void JNICALL |
| 115 | Java_com_sun_media_sound_MidiInDevice_nStop(JNIEnv* e, jobject thisObj, jlong deviceHandle) { |
| 116 | |
| 117 | TRACE0("> Java_com_sun_media_sound_MidiInDevice_nStop.\n"); |
| 118 | |
| 119 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 120 | // stop the device and remove all queued events for this device handle |
| 121 | MIDI_IN_StopDevice((MidiDeviceHandle*) (UINT_PTR) deviceHandle); |
| 122 | #endif |
| 123 | |
| 124 | TRACE0("< Java_com_sun_media_sound_MidiInDevice_nStop succeeded\n"); |
| 125 | } |
| 126 | |
| 127 | JNIEXPORT jlong JNICALL |
| 128 | Java_com_sun_media_sound_MidiInDevice_nGetTimeStamp(JNIEnv* e, jobject thisObj, jlong deviceHandle) { |
| 129 | |
| 130 | jlong ret = -1; |
| 131 | |
| 132 | TRACE0("Java_com_sun_media_sound_MidiInDevice_nGetTimeStamp.\n"); |
| 133 | |
| 134 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 135 | ret = (jlong) MIDI_IN_GetTimeStamp((MidiDeviceHandle*) (UINT_PTR) deviceHandle); |
| 136 | #endif |
| 137 | |
| 138 | /* Handle error codes. */ |
| 139 | if (ret < -1) { |
| 140 | ERROR1("Java_com_sun_media_sound_MidiInDevice_nGetTimeStamp: MIDI_IN_GetTimeStamp returned %lld\n", ret); |
| 141 | ret = -1; |
| 142 | } |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | |
| 147 | JNIEXPORT void JNICALL |
| 148 | Java_com_sun_media_sound_MidiInDevice_nGetMessages(JNIEnv* e, jobject thisObj, jlong deviceHandle) { |
| 149 | |
| 150 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 151 | MidiMessage* pMessage; |
| 152 | jclass javaClass = NULL; |
| 153 | jmethodID callbackShortMessageMethodID = NULL; |
| 154 | jmethodID callbackLongMessageMethodID = NULL; |
| 155 | #endif |
| 156 | |
| 157 | TRACE0("> Java_com_sun_media_sound_MidiInDevice_nGetMessages\n"); |
| 158 | |
| 159 | #if USE_PLATFORM_MIDI_IN == TRUE |
| 160 | while ((pMessage = MIDI_IN_GetMessage((MidiDeviceHandle*) (UINT_PTR) deviceHandle))) { |
| 161 | if ((javaClass == NULL) || (callbackShortMessageMethodID == NULL)) { |
| 162 | if (!thisObj) { |
| 163 | ERROR0("MidiInDevice: Java_com_sun_media_sound_MidiInDevice_nGetMessages: thisObj is NULL\n"); |
| 164 | return; |
| 165 | } |
| 166 | |
| 167 | if (javaClass == NULL) { |
| 168 | javaClass = (*e)->GetObjectClass(e, thisObj); |
| 169 | if (javaClass == NULL) { |
| 170 | ERROR0("MidiInDevice: Java_com_sun_media_sound_MidiInDevice_nGetMessages: javaClass is NULL\n"); |
| 171 | return; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | if (callbackShortMessageMethodID == NULL) { |
| 176 | // save the callbackShortMessage callback method id. |
| 177 | // this is valid as long as the class is not unloaded. |
| 178 | callbackShortMessageMethodID = (*e)->GetMethodID(e, javaClass, "callbackShortMessage", "(IJ)V"); |
| 179 | if (callbackShortMessageMethodID == 0) { |
| 180 | ERROR0("MidiInDevice: Java_com_sun_media_sound_MidiInDevice_nGetMessages: callbackShortMessageMethodID is 0\n"); |
| 181 | return; |
| 182 | } |
| 183 | } |
| 184 | if (callbackLongMessageMethodID == NULL) { |
| 185 | // save the callbackLongMessage callback method id. |
| 186 | // this is valid as long as the class is not unloaded. |
| 187 | callbackLongMessageMethodID = (*e)->GetMethodID(e, javaClass, "callbackLongMessage", "([BJ)V"); |
| 188 | if (callbackLongMessageMethodID == 0) { |
| 189 | ERROR0("MidiInDevice: Java_com_sun_media_sound_MidiInDevice_nGetMessages: callbackLongMessageMethodID is 0\n"); |
| 190 | return; |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | switch ((int)pMessage->type) { |
| 196 | case SHORT_MESSAGE: { |
| 197 | jint msg = (jint)pMessage->data.s.packedMsg; |
| 198 | jlong ts = (jlong)pMessage->timestamp; |
| 199 | TRACE0("Java_com_sun_media_sound_MidiInDevice_nGetMessages: got SHORT_MESSAGE\n"); |
| 200 | // now we can put this message object back in the queue |
| 201 | MIDI_IN_ReleaseMessage((MidiDeviceHandle*) (UINT_PTR) deviceHandle, pMessage); |
| 202 | // and notify Java space |
| 203 | (*e)->CallVoidMethod(e, thisObj, callbackShortMessageMethodID, msg, ts); |
| 204 | break; |
| 205 | } |
| 206 | |
| 207 | case LONG_MESSAGE: { |
| 208 | jlong ts = (jlong)pMessage->timestamp; |
| 209 | jbyteArray jData; |
| 210 | UBYTE* data; |
| 211 | int isSXCont = 0; |
| 212 | TRACE0("Java_com_sun_media_sound_MidiInDevice_nGetMessages: got LONG_MESSAGE\n"); |
| 213 | if ((*(pMessage->data.l.data) != 0xF0) |
| 214 | && (*(pMessage->data.l.data) != 0xF7)) { |
| 215 | // this is a continued sys ex message |
| 216 | // need to prepend 0xF7 |
| 217 | isSXCont = 1; |
| 218 | } |
| 219 | jData = (*e)->NewByteArray(e, pMessage->data.l.size + isSXCont); |
| 220 | if (!jData) { |
| 221 | ERROR0("Java_com_sun_media_sound_MidiInDevice_nGetMessages: cannot create long byte array.\n"); |
| 222 | break; |
| 223 | } |
| 224 | data = (UBYTE*) ((*e)->GetByteArrayElements(e, jData, NULL)); |
| 225 | if (!data) { |
| 226 | ERROR0("MidiInDevice: Java_com_sun_media_sound_MidiInDevice_nGetMessages: array data is NULL\n"); |
| 227 | break; |
| 228 | } |
| 229 | // finally copy the long message |
| 230 | memcpy(data + isSXCont, pMessage->data.l.data, pMessage->data.l.size); |
| 231 | |
| 232 | // now we can put this message object back in the queue |
| 233 | MIDI_IN_ReleaseMessage((MidiDeviceHandle*) (UINT_PTR) deviceHandle, pMessage); |
| 234 | |
| 235 | // if this is a patched continued sys ex message, prepend 0xF7 |
| 236 | if (isSXCont) { |
| 237 | *data = 0xF7; |
| 238 | } |
| 239 | |
| 240 | // commit the byte array |
| 241 | (*e)->ReleaseByteArrayElements(e, jData, (jbyte*) data, (jint) 0); |
| 242 | |
| 243 | (*e)->CallVoidMethod(e, thisObj, callbackLongMessageMethodID, jData, ts); |
| 244 | // release local reference to array: not needed anymore. |
| 245 | (*e)->DeleteLocalRef(e, jData); |
| 246 | break; |
| 247 | } |
| 248 | |
| 249 | default: |
| 250 | // put this message object back in the queue |
| 251 | MIDI_IN_ReleaseMessage((MidiDeviceHandle*) (UINT_PTR) deviceHandle, pMessage); |
| 252 | ERROR1("Java_com_sun_media_sound_MidiInDevice_nGetMessages: got unsupported message, type %d\n", pMessage->type); |
| 253 | break; |
| 254 | } // switch |
| 255 | } |
| 256 | |
| 257 | #endif // USE_PLATFORM_MIDI_IN |
| 258 | |
| 259 | TRACE0("< Java_com_sun_media_sound_MidiInDevice_nGetMessages returning\n"); |
| 260 | } |