163 строки
3.8 KiB
C
163 строки
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) 2006,2007 Daniel Mack
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/gfp.h>
|
|
#include <sound/rawmidi.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
|
|
#include "device.h"
|
|
#include "midi.h"
|
|
|
|
static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
|
|
{
|
|
struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
|
|
|
|
if (!cdev)
|
|
return;
|
|
|
|
cdev->midi_receive_substream = up ? substream : NULL;
|
|
}
|
|
|
|
|
|
static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
|
|
{
|
|
struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
|
|
if (cdev->midi_out_active) {
|
|
usb_kill_urb(&cdev->midi_out_urb);
|
|
cdev->midi_out_active = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev,
|
|
struct snd_rawmidi_substream *substream)
|
|
{
|
|
int len, ret;
|
|
struct device *dev = caiaqdev_to_dev(cdev);
|
|
|
|
cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
|
|
cdev->midi_out_buf[1] = 0; /* port */
|
|
len = snd_rawmidi_transmit(substream, cdev->midi_out_buf + 3,
|
|
EP1_BUFSIZE - 3);
|
|
|
|
if (len <= 0)
|
|
return;
|
|
|
|
cdev->midi_out_buf[2] = len;
|
|
cdev->midi_out_urb.transfer_buffer_length = len+3;
|
|
|
|
ret = usb_submit_urb(&cdev->midi_out_urb, GFP_ATOMIC);
|
|
if (ret < 0)
|
|
dev_err(dev,
|
|
"snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
|
|
"ret=%d, len=%d\n", substream, ret, len);
|
|
else
|
|
cdev->midi_out_active = 1;
|
|
}
|
|
|
|
static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
|
|
{
|
|
struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
|
|
|
|
if (up) {
|
|
cdev->midi_out_substream = substream;
|
|
if (!cdev->midi_out_active)
|
|
snd_usb_caiaq_midi_send(cdev, substream);
|
|
} else {
|
|
cdev->midi_out_substream = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static const struct snd_rawmidi_ops snd_usb_caiaq_midi_output =
|
|
{
|
|
.open = snd_usb_caiaq_midi_output_open,
|
|
.close = snd_usb_caiaq_midi_output_close,
|
|
.trigger = snd_usb_caiaq_midi_output_trigger,
|
|
};
|
|
|
|
static const struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
|
|
{
|
|
.open = snd_usb_caiaq_midi_input_open,
|
|
.close = snd_usb_caiaq_midi_input_close,
|
|
.trigger = snd_usb_caiaq_midi_input_trigger,
|
|
};
|
|
|
|
void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
|
|
int port, const char *buf, int len)
|
|
{
|
|
if (!cdev->midi_receive_substream)
|
|
return;
|
|
|
|
snd_rawmidi_receive(cdev->midi_receive_substream, buf, len);
|
|
}
|
|
|
|
int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
|
|
{
|
|
int ret;
|
|
struct snd_rawmidi *rmidi;
|
|
|
|
ret = snd_rawmidi_new(device->chip.card, device->product_name, 0,
|
|
device->spec.num_midi_out,
|
|
device->spec.num_midi_in,
|
|
&rmidi);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
strlcpy(rmidi->name, device->product_name, sizeof(rmidi->name));
|
|
|
|
rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX;
|
|
rmidi->private_data = device;
|
|
|
|
if (device->spec.num_midi_out > 0) {
|
|
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
|
|
&snd_usb_caiaq_midi_output);
|
|
}
|
|
|
|
if (device->spec.num_midi_in > 0) {
|
|
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
|
|
&snd_usb_caiaq_midi_input);
|
|
}
|
|
|
|
device->rmidi = rmidi;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void snd_usb_caiaq_midi_output_done(struct urb* urb)
|
|
{
|
|
struct snd_usb_caiaqdev *cdev = urb->context;
|
|
|
|
cdev->midi_out_active = 0;
|
|
if (urb->status != 0)
|
|
return;
|
|
|
|
if (!cdev->midi_out_substream)
|
|
return;
|
|
|
|
snd_usb_caiaq_midi_send(cdev, cdev->midi_out_substream);
|
|
}
|