| /* |
| * Copyright (c) 2003, 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 |
| |
| #if USE_PLATFORM_MIDI_OUT == TRUE |
| |
| #include <alsa/asoundlib.h> |
| #include "PlatformMidi.h" |
| #include "PLATFORM_API_LinuxOS_ALSA_MidiUtils.h" |
| |
| |
| |
| static int CHANNEL_MESSAGE_LENGTH[] = { |
| -1, -1, -1, -1, -1, -1, -1, -1, 3, 3, 3, 3, 2, 2, 3 }; |
| /* 8x 9x Ax Bx Cx Dx Ex */ |
| |
| static int SYSTEM_MESSAGE_LENGTH[] = { |
| -1, 2, 3, 2, -1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1 }; |
| /* F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF */ |
| |
| |
| // the returned length includes the status byte. |
| // for illegal messages, -1 is returned. |
| static int getShortMessageLength(int status) { |
| int dataLength = 0; |
| if (status < 0xF0) { // channel voice message |
| dataLength = CHANNEL_MESSAGE_LENGTH[(status >> 4) & 0xF]; |
| } else { |
| dataLength = SYSTEM_MESSAGE_LENGTH[status & 0xF]; |
| } |
| return dataLength; |
| } |
| |
| |
| /* |
| * implementation of the platform-dependent |
| * MIDI out functions declared in PlatformMidi.h |
| */ |
| char* MIDI_OUT_GetErrorStr(INT32 err) { |
| return (char*) getErrorStr(err); |
| } |
| |
| |
| INT32 MIDI_OUT_GetNumDevices() { |
| TRACE0("MIDI_OUT_GetNumDevices()\n"); |
| return getMidiDeviceCount(SND_RAWMIDI_STREAM_OUTPUT); |
| } |
| |
| |
| INT32 MIDI_OUT_GetDeviceName(INT32 deviceIndex, char *name, UINT32 nameLength) { |
| TRACE0("MIDI_OUT_GetDeviceName()\n"); |
| return getMidiDeviceName(SND_RAWMIDI_STREAM_OUTPUT, deviceIndex, |
| name, nameLength); |
| } |
| |
| |
| INT32 MIDI_OUT_GetDeviceVendor(INT32 deviceIndex, char *name, UINT32 nameLength) { |
| TRACE0("MIDI_OUT_GetDeviceVendor()\n"); |
| return getMidiDeviceVendor(deviceIndex, name, nameLength); |
| } |
| |
| |
| INT32 MIDI_OUT_GetDeviceDescription(INT32 deviceIndex, char *name, UINT32 nameLength) { |
| TRACE0("MIDI_OUT_GetDeviceDescription()\n"); |
| return getMidiDeviceDescription(SND_RAWMIDI_STREAM_OUTPUT, deviceIndex, |
| name, nameLength); |
| } |
| |
| |
| INT32 MIDI_OUT_GetDeviceVersion(INT32 deviceIndex, char *name, UINT32 nameLength) { |
| TRACE0("MIDI_OUT_GetDeviceVersion()\n"); |
| return getMidiDeviceVersion(deviceIndex, name, nameLength); |
| } |
| |
| |
| /* *************************** MidiOutDevice implementation *************** */ |
| |
| INT32 MIDI_OUT_OpenDevice(INT32 deviceIndex, MidiDeviceHandle** handle) { |
| TRACE1("MIDI_OUT_OpenDevice(): deviceIndex: %d\n", (int) deviceIndex); |
| return openMidiDevice(SND_RAWMIDI_STREAM_OUTPUT, deviceIndex, handle); |
| } |
| |
| |
| INT32 MIDI_OUT_CloseDevice(MidiDeviceHandle* handle) { |
| TRACE0("MIDI_OUT_CloseDevice()\n"); |
| return closeMidiDevice(handle); |
| } |
| |
| |
| INT64 MIDI_OUT_GetTimeStamp(MidiDeviceHandle* handle) { |
| return getMidiTimestamp(handle); |
| } |
| |
| |
| INT32 MIDI_OUT_SendShortMessage(MidiDeviceHandle* handle, UINT32 packedMsg, |
| UINT32 timestamp) { |
| int err; |
| int status; |
| int data1; |
| int data2; |
| char buffer[3]; |
| |
| TRACE2("> MIDI_OUT_SendShortMessage() %x, time: %u\n", packedMsg, (unsigned int) timestamp); |
| if (!handle) { |
| ERROR0("< ERROR: MIDI_OUT_SendShortMessage(): handle is NULL\n"); |
| return MIDI_INVALID_HANDLE; |
| } |
| if (!handle->deviceHandle) { |
| ERROR0("< ERROR: MIDI_OUT_SendLongMessage(): native handle is NULL\n"); |
| return MIDI_INVALID_HANDLE; |
| } |
| status = (packedMsg & 0xFF); |
| buffer[0] = (char) status; |
| buffer[1] = (char) ((packedMsg >> 8) & 0xFF); |
| buffer[2] = (char) ((packedMsg >> 16) & 0xFF); |
| TRACE4("status: %d, data1: %d, data2: %d, length: %d\n", (int) buffer[0], (int) buffer[1], (int) buffer[2], getShortMessageLength(status)); |
| err = snd_rawmidi_write((snd_rawmidi_t*) handle->deviceHandle, buffer, getShortMessageLength(status)); |
| if (err < 0) { |
| ERROR1(" ERROR: MIDI_OUT_SendShortMessage(): snd_rawmidi_write() returned %d\n", err); |
| } |
| |
| TRACE0("< MIDI_OUT_SendShortMessage()\n"); |
| return err; |
| } |
| |
| |
| INT32 MIDI_OUT_SendLongMessage(MidiDeviceHandle* handle, UBYTE* data, |
| UINT32 size, UINT32 timestamp) { |
| int err; |
| |
| TRACE2("> MIDI_OUT_SendLongMessage() size %u, time: %u\n", (unsigned int) size, (unsigned int) timestamp); |
| if (!handle) { |
| ERROR0("< ERROR: MIDI_OUT_SendLongMessage(): handle is NULL\n"); |
| return MIDI_INVALID_HANDLE; |
| } |
| if (!handle->deviceHandle) { |
| ERROR0("< ERROR: MIDI_OUT_SendLongMessage(): native handle is NULL\n"); |
| return MIDI_INVALID_HANDLE; |
| } |
| if (!data) { |
| ERROR0("< ERROR: MIDI_OUT_SendLongMessage(): data is NULL\n"); |
| return MIDI_INVALID_HANDLE; |
| } |
| err = snd_rawmidi_write((snd_rawmidi_t*) handle->deviceHandle, |
| data, size); |
| if (err < 0) { |
| ERROR1(" ERROR: MIDI_OUT_SendLongMessage(): snd_rawmidi_write() returned %d\n", err); |
| } |
| |
| TRACE0("< MIDI_OUT_SendLongMessage()\n"); |
| return err; |
| } |
| |
| |
| #endif /* USE_PLATFORM_MIDI_OUT */ |