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523f1dce DM |
1 | /* |
2 | * Copyright (c) 2006,2007 Daniel Mack | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | ||
523f1dce | 19 | #include <linux/usb.h> |
523f1dce | 20 | #include <sound/rawmidi.h> |
e431cf45 | 21 | #include <sound/core.h> |
523f1dce DM |
22 | #include <sound/pcm.h> |
23 | ||
936e7d03 DM |
24 | #include "device.h" |
25 | #include "midi.h" | |
523f1dce | 26 | |
523f1dce DM |
27 | static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream) |
28 | { | |
29 | return 0; | |
30 | } | |
31 | ||
32 | static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream) | |
33 | { | |
34 | return 0; | |
35 | } | |
36 | ||
37 | static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) | |
38 | { | |
39 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; | |
40 | ||
41 | if (!dev) | |
42 | return; | |
43 | ||
44 | dev->midi_receive_substream = up ? substream : NULL; | |
45 | } | |
46 | ||
47 | ||
48 | static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream) | |
49 | { | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream) | |
54 | { | |
f3f80a92 TI |
55 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; |
56 | if (dev->midi_out_active) { | |
57 | usb_kill_urb(&dev->midi_out_urb); | |
58 | dev->midi_out_active = 0; | |
59 | } | |
523f1dce DM |
60 | return 0; |
61 | } | |
62 | ||
63 | static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev, | |
64 | struct snd_rawmidi_substream *substream) | |
65 | { | |
66 | int len, ret; | |
67 | ||
68 | dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE; | |
69 | dev->midi_out_buf[1] = 0; /* port */ | |
f3f80a92 TI |
70 | len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3, |
71 | EP1_BUFSIZE - 3); | |
523f1dce DM |
72 | |
73 | if (len <= 0) | |
74 | return; | |
75 | ||
76 | dev->midi_out_buf[2] = len; | |
77 | dev->midi_out_urb.transfer_buffer_length = len+3; | |
78 | ||
79 | ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC); | |
80 | if (ret < 0) | |
f3f80a92 TI |
81 | log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed," |
82 | "ret=%d, len=%d\n", | |
83 | substream, ret, len); | |
84 | else | |
85 | dev->midi_out_active = 1; | |
523f1dce DM |
86 | } |
87 | ||
88 | static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) | |
89 | { | |
90 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; | |
91 | ||
f3f80a92 TI |
92 | if (up) { |
93 | dev->midi_out_substream = substream; | |
94 | if (!dev->midi_out_active) | |
95 | snd_usb_caiaq_midi_send(dev, substream); | |
96 | } else { | |
523f1dce | 97 | dev->midi_out_substream = NULL; |
523f1dce | 98 | } |
523f1dce DM |
99 | } |
100 | ||
101 | ||
102 | static struct snd_rawmidi_ops snd_usb_caiaq_midi_output = | |
103 | { | |
104 | .open = snd_usb_caiaq_midi_output_open, | |
105 | .close = snd_usb_caiaq_midi_output_close, | |
106 | .trigger = snd_usb_caiaq_midi_output_trigger, | |
107 | }; | |
108 | ||
109 | static struct snd_rawmidi_ops snd_usb_caiaq_midi_input = | |
110 | { | |
111 | .open = snd_usb_caiaq_midi_input_open, | |
112 | .close = snd_usb_caiaq_midi_input_close, | |
113 | .trigger = snd_usb_caiaq_midi_input_trigger, | |
114 | }; | |
115 | ||
116 | void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev, | |
117 | int port, const char *buf, int len) | |
118 | { | |
119 | if (!dev->midi_receive_substream) | |
120 | return; | |
121 | ||
122 | snd_rawmidi_receive(dev->midi_receive_substream, buf, len); | |
123 | } | |
124 | ||
599c3e76 | 125 | int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device) |
523f1dce DM |
126 | { |
127 | int ret; | |
128 | struct snd_rawmidi *rmidi; | |
129 | ||
130 | ret = snd_rawmidi_new(device->chip.card, device->product_name, 0, | |
131 | device->spec.num_midi_out, | |
132 | device->spec.num_midi_in, | |
133 | &rmidi); | |
134 | ||
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | strcpy(rmidi->name, device->product_name); | |
139 | ||
140 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX; | |
141 | rmidi->private_data = device; | |
142 | ||
143 | if (device->spec.num_midi_out > 0) { | |
144 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; | |
145 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, | |
146 | &snd_usb_caiaq_midi_output); | |
147 | } | |
148 | ||
149 | if (device->spec.num_midi_in > 0) { | |
150 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; | |
151 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, | |
152 | &snd_usb_caiaq_midi_input); | |
153 | } | |
154 | ||
155 | device->rmidi = rmidi; | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | void snd_usb_caiaq_midi_output_done(struct urb* urb) | |
161 | { | |
162 | struct snd_usb_caiaqdev *dev = urb->context; | |
523f1dce | 163 | |
f3f80a92 | 164 | dev->midi_out_active = 0; |
523f1dce DM |
165 | if (urb->status != 0) |
166 | return; | |
167 | ||
168 | if (!dev->midi_out_substream) | |
169 | return; | |
170 | ||
523f1dce DM |
171 | snd_usb_caiaq_midi_send(dev, dev->midi_out_substream); |
172 | } | |
173 |