136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/*
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* tascam-midi.c - a part of driver for TASCAM FireWire series
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*
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* Copyright (c) 2015 Takashi Sakamoto
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include "tascam.h"
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static int midi_capture_open(struct snd_rawmidi_substream *substream)
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{
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/* Do nothing. */
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return 0;
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}
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static int midi_playback_open(struct snd_rawmidi_substream *substream)
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{
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struct snd_tscm *tscm = substream->rmidi->private_data;
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/* Initialize internal status. */
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tscm->running_status[substream->number] = 0;
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tscm->on_sysex[substream->number] = 0;
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return 0;
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}
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static int midi_capture_close(struct snd_rawmidi_substream *substream)
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{
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/* Do nothing. */
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return 0;
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}
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static int midi_playback_close(struct snd_rawmidi_substream *substream)
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{
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struct snd_tscm *tscm = substream->rmidi->private_data;
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snd_fw_async_midi_port_finish(&tscm->out_ports[substream->number]);
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return 0;
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}
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static void midi_capture_trigger(struct snd_rawmidi_substream *substrm, int up)
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{
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struct snd_tscm *tscm = substrm->rmidi->private_data;
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unsigned long flags;
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spin_lock_irqsave(&tscm->lock, flags);
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if (up)
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tscm->tx_midi_substreams[substrm->number] = substrm;
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else
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tscm->tx_midi_substreams[substrm->number] = NULL;
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spin_unlock_irqrestore(&tscm->lock, flags);
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}
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static void midi_playback_trigger(struct snd_rawmidi_substream *substrm, int up)
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{
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struct snd_tscm *tscm = substrm->rmidi->private_data;
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unsigned long flags;
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spin_lock_irqsave(&tscm->lock, flags);
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if (up)
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snd_fw_async_midi_port_run(&tscm->out_ports[substrm->number],
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substrm);
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spin_unlock_irqrestore(&tscm->lock, flags);
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}
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static struct snd_rawmidi_ops midi_capture_ops = {
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.open = midi_capture_open,
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.close = midi_capture_close,
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.trigger = midi_capture_trigger,
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};
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static struct snd_rawmidi_ops midi_playback_ops = {
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.open = midi_playback_open,
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.close = midi_playback_close,
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.trigger = midi_playback_trigger,
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};
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int snd_tscm_create_midi_devices(struct snd_tscm *tscm)
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{
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struct snd_rawmidi *rmidi;
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struct snd_rawmidi_str *stream;
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struct snd_rawmidi_substream *subs;
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int err;
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err = snd_rawmidi_new(tscm->card, tscm->card->driver, 0,
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tscm->spec->midi_playback_ports,
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tscm->spec->midi_capture_ports,
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&rmidi);
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if (err < 0)
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return err;
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snprintf(rmidi->name, sizeof(rmidi->name),
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"%s MIDI", tscm->card->shortname);
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rmidi->private_data = tscm;
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
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&midi_capture_ops);
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stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT];
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/* Set port names for MIDI input. */
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list_for_each_entry(subs, &stream->substreams, list) {
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/* TODO: support virtual MIDI ports. */
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if (subs->number < tscm->spec->midi_capture_ports) {
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/* Hardware MIDI ports. */
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snprintf(subs->name, sizeof(subs->name),
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"%s MIDI %d",
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tscm->card->shortname, subs->number + 1);
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}
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}
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
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snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
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&midi_playback_ops);
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stream = &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT];
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/* Set port names for MIDI ourput. */
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list_for_each_entry(subs, &stream->substreams, list) {
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if (subs->number < tscm->spec->midi_playback_ports) {
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/* Hardware MIDI ports only. */
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snprintf(subs->name, sizeof(subs->name),
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"%s MIDI %d",
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tscm->card->shortname, subs->number + 1);
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}
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}
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rmidi->info_flags |= SNDRV_RAWMIDI_INFO_DUPLEX;
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return 0;
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}
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