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Add MIDI autoconnect feature.

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It allows to open all MIDI in devices according
to MIDI channels limit set by synth.midi-channels setting.
This commit is contained in:
jjceresa 2022-01-15 14:01:59 +01:00
parent b345eff042
commit 3c73f28033
1 changed files with 43 additions and 4 deletions
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47
src/drivers/fluid_winmidi.c
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@ -69,6 +69,19 @@
* or use the multi device naming "0" (specifying only device index 0).
* Both naming choice allows the driver to handle the same single device.
*
3)If the setting "midi.autoconnect" is enabled and the device name is "default",
* then all the available devices are opened, applying the appropriate channel
* mappings to each device (the first device is mapped to the 16 first channels
* (0-15), the second one to the next 16 channels (16-31), and so on with the limit
* of the synth.midi-channels setting. After arriving to the channels limit, the
* mapping restarts with the channels 0-15.
* This makes all MIDI devices audible on the synth instance. However with more than
* 1 MIDI devices and the default value of synth.midi-channels of 16 then MIDI
* channels conflicts are possible if MIDI devices transmit on the same MIDI channel.
* If the device name other than "default" is specified, then midi.autoconnect
* and synth.midi-channels settings are ignored (see 1).
*
*/
#include "fluidsynth_priv.h"
@ -481,6 +494,8 @@ new_fluid_winmidi_driver(fluid_settings_t *settings,
MMRESULT res;
int i, j;
int max_devices; /* maximum number of devices to handle */
int autoconnect = 0;
int synth_midi_channels = 16;
char strError[MAXERRORLENGTH];
char dev_name[MAXPNAMELEN];
@ -498,8 +513,18 @@ new_fluid_winmidi_driver(fluid_settings_t *settings,
FLUID_STRCPY(dev_name, "default");
}
/* parse device name, get the maximum number of devices to handle */
max_devices = fluid_winmidi_parse_device_name(NULL, dev_name);
fluid_settings_getint(settings, "midi.autoconnect", &autoconnect);
if ((autoconnect) && (strcmp(dev_name, "default") == 0))
{
fluid_settings_getint(settings, "synth.midi-channels", &synth_midi_channels);
max_devices = midiInGetNumDevs(); /* get number of real devices installed */
}
else
{
autoconnect = 0; /* disable autoconnect */
/* parse device name to get the number of devices to handle */
max_devices = fluid_winmidi_parse_device_name(NULL, dev_name);
}
/* check if any device has be found */
if(!max_devices)
@ -519,8 +544,15 @@ new_fluid_winmidi_driver(fluid_settings_t *settings,
FLUID_MEMSET(dev, 0, i); /* reset structure members */
/* parse device name, get devices index */
fluid_winmidi_parse_device_name(dev, dev_name);
if(autoconnect)
{
dev->dev_count = max_devices; /* device count for autoconnect */
}
else
{
/* parse device name, get devices index and device count into dev */
fluid_winmidi_parse_device_name(dev, dev_name);
}
dev->driver.handler = handler;
dev->driver.data = data;
@ -532,6 +564,13 @@ new_fluid_winmidi_driver(fluid_settings_t *settings,
dev_infos->dev = dev; /* driver structure */
dev_infos->midi_num = i; /* device order number */
dev_infos->channel_map = i * 16; /* map from input to output */
if(autoconnect)
{
/* set device index and channel mapping for autoconnect */
dev_infos->dev_idx = i;
dev_infos->channel_map %= synth_midi_channels;
}
FLUID_LOG(FLUID_DBG, "opening device at index %d", dev_infos->dev_idx);
res = midiInOpen(&dev_infos->hmidiin, dev_infos->dev_idx,
(DWORD_PTR) fluid_winmidi_callback,