1 /*

     2  * Copyright (c) 2003, 2007, Oracle and/or its affiliates. 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.  Oracle designates this

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

     9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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

    23  * questions.

    24  */

    25 

    26 #include <alsa/asoundlib.h>

    27 #include "Utilities.h"

    28 #include "PlatformMidi.h"

    29 

    30 

    31 #ifndef PLATFORM_API_LINUXOS_ALSA_MIDIUTILS_H_INCLUDED

    32 #define PLATFORM_API_LINUXOS_ALSA_MIDIUTILS_H_INCLUDED

    33 

    34 #define EVENT_PARSER_BUFSIZE (2048)

    35 

    36 // if this is defined, use plughw: devices

    37 //#define ALSA_MIDI_USE_PLUGHW

    38 #undef ALSA_MIDI_USE_PLUGHW

    39 

    40 typedef struct tag_ALSA_MIDIDeviceDescription {

    41         int index;          // in

    42         int strLen;         // in

    43         INT32 deviceID;    // out

    44         char* name;         // out

    45         char* description;  // out

    46 } ALSA_MIDIDeviceDescription;

    47 

    48 

    49 const char* getErrorStr(INT32 err);

    50 

    51 /* Returns the number of devices. */

    52 /* direction is either SND_RAWMIDI_STREAM_OUTPUT or

    53    SND_RAWMIDI_STREAM_INPUT. */

    54 int getMidiDeviceCount(snd_rawmidi_stream_t direction);

    55 

    56 /* Returns MIDI_SUCCESS or MIDI_INVALID_DEVICEID */

    57 /* direction is either SND_RAWMIDI_STREAM_OUTPUT or

    58    SND_RAWMIDI_STREAM_INPUT. */

    59 int getMidiDeviceName(snd_rawmidi_stream_t direction, int index,

    60                       char *name, UINT32 nameLength);

    61 

    62 /* Returns MIDI_SUCCESS or MIDI_INVALID_DEVICEID */

    63 int getMidiDeviceVendor(int index, char *name, UINT32 nameLength);

    64 

    65 /* Returns MIDI_SUCCESS or MIDI_INVALID_DEVICEID */

    66 /* direction is either SND_RAWMIDI_STREAM_OUTPUT or

    67    SND_RAWMIDI_STREAM_INPUT. */

    68 int getMidiDeviceDescription(snd_rawmidi_stream_t direction, int index,

    69                              char *name, UINT32 nameLength);

    70 

    71 /* Returns MIDI_SUCCESS or MIDI_INVALID_DEVICEID */

    72 int getMidiDeviceVersion(int index, char *name, UINT32 nameLength);

    73 

    74 // returns 0 on success, otherwise MIDI_OUT_OF_MEMORY or ALSA error code

    75 /* direction is either SND_RAWMIDI_STREAM_OUTPUT or

    76    SND_RAWMIDI_STREAM_INPUT. */

    77 INT32 openMidiDevice(snd_rawmidi_stream_t direction, INT32 deviceIndex,

    78                      MidiDeviceHandle** handle);

    79 

    80 // returns 0 on success, otherwise a (negative) ALSA error code

    81 INT32 closeMidiDevice(MidiDeviceHandle* handle);

    82 

    83 INT64 getMidiTimestamp(MidiDeviceHandle* handle);

    84 

    85 #endif // PLATFORM_API_LINUXOS_ALSA_MIDIUTILS_H_INCLUDED