mirror of
https://github.com/Ardour/ardour.git
synced 2025-12-23 07:06:23 +01:00
break out ALSA related functions into libardouralsautil
This commit is contained in:
Robin Gareus
Paul Davis
parent
ed7c8de1a9
commit
feb1a9e269
11 changed files with 317 additions and 226 deletions
|
|
@ -31,6 +31,7 @@
|
|||
#include "pbd/file_utils.h"
|
||||
#include "ardour/port_manager.h"
|
||||
#include "ardour/system_exec.h"
|
||||
#include "ardouralsautil/devicelist.h"
|
||||
#include "i18n.h"
|
||||
|
||||
using namespace ARDOUR;
|
||||
|
|
@ -44,8 +45,8 @@ AlsaAudioBackend::AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info)
|
|||
, _run (false)
|
||||
, _active (false)
|
||||
, _freewheeling (false)
|
||||
, _capture_device("")
|
||||
, _playback_device("")
|
||||
, _audio_device("")
|
||||
, _midi_device("")
|
||||
, _samplerate (48000)
|
||||
, _samples_per_period (1024)
|
||||
, _periods_per_cycle (2)
|
||||
|
|
@ -83,79 +84,14 @@ std::vector<AudioBackend::DeviceStatus>
|
|||
AlsaAudioBackend::enumerate_devices () const
|
||||
{
|
||||
std::vector<AudioBackend::DeviceStatus> s;
|
||||
int cardnum = -1;
|
||||
int device = -1;
|
||||
snd_ctl_card_info_t *info;
|
||||
snd_ctl_card_info_alloca (&info);
|
||||
snd_pcm_info_t *pcminfo;
|
||||
snd_pcm_info_alloca (&pcminfo);
|
||||
|
||||
while (snd_card_next (&cardnum) >= 0 && cardnum >= 0) {
|
||||
snd_ctl_t *handle;
|
||||
|
||||
std::string devname = "hw:";
|
||||
devname += PBD::to_string (cardnum, std::dec);
|
||||
|
||||
if (snd_ctl_open (&handle, devname.c_str(), 0) >= 0 && snd_ctl_card_info (handle, info) >= 0) {
|
||||
if (snd_ctl_card_info (handle, info) < 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
std::string card_name = snd_ctl_card_info_get_name (info);
|
||||
devname = "hw:";
|
||||
devname += snd_ctl_card_info_get_id (info);
|
||||
|
||||
while (snd_ctl_pcm_next_device (handle, &device) >= 0 && device >= 0) {
|
||||
snd_pcm_info_set_device (pcminfo, device);
|
||||
snd_pcm_info_set_subdevice (pcminfo, 0);
|
||||
snd_pcm_info_set_stream (pcminfo, SND_PCM_STREAM_CAPTURE);
|
||||
if (snd_ctl_pcm_info (handle, pcminfo) < 0) {
|
||||
continue;
|
||||
}
|
||||
snd_pcm_info_set_device (pcminfo, device);
|
||||
snd_pcm_info_set_subdevice (pcminfo, 0);
|
||||
snd_pcm_info_set_stream (pcminfo, SND_PCM_STREAM_PLAYBACK);
|
||||
if (snd_ctl_pcm_info (handle, pcminfo) < 0) {
|
||||
continue;
|
||||
}
|
||||
devname += ',';
|
||||
devname += PBD::to_string (device, std::dec);
|
||||
s.push_back (DeviceStatus (devname + " " + card_name, true));
|
||||
}
|
||||
snd_ctl_close (handle);
|
||||
}
|
||||
std::map<std::string, std::string> devices;
|
||||
get_alsa_audio_device_names(devices);
|
||||
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
||||
s.push_back (DeviceStatus (i->first, true));
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
static int card_to_num(const char* device_name)
|
||||
{
|
||||
char* ctl_name;
|
||||
const char * comma;
|
||||
snd_ctl_t* ctl_handle;
|
||||
int i = -1;
|
||||
|
||||
if (strncasecmp(device_name, "plughw:", 7) == 0) {
|
||||
device_name += 4;
|
||||
}
|
||||
if (!(comma = strchr(device_name, ','))) {
|
||||
ctl_name = strdup(device_name);
|
||||
} else {
|
||||
ctl_name = strndup(device_name, comma - device_name);
|
||||
}
|
||||
|
||||
if (snd_ctl_open (&ctl_handle, ctl_name, 0) >= 0) {
|
||||
snd_ctl_card_info_t *card_info;
|
||||
snd_ctl_card_info_alloca (&card_info);
|
||||
if (snd_ctl_card_info(ctl_handle, card_info) >= 0) {
|
||||
i = snd_ctl_card_info_get_card(card_info);
|
||||
}
|
||||
snd_ctl_close(ctl_handle);
|
||||
}
|
||||
free(ctl_name);
|
||||
return i;
|
||||
}
|
||||
|
||||
static void acquire_device(const char* device_name)
|
||||
{
|
||||
/* This is quick hack, ideally we'll link against libdbus and implement a dbus-listener
|
||||
|
|
@ -253,8 +189,7 @@ AlsaAudioBackend::can_change_buffer_size_when_running () const
|
|||
int
|
||||
AlsaAudioBackend::set_device_name (const std::string& d)
|
||||
{
|
||||
_capture_device = d;
|
||||
_playback_device = d;
|
||||
_audio_device = d;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -317,7 +252,7 @@ AlsaAudioBackend::set_systemic_output_latency (uint32_t sl)
|
|||
std::string
|
||||
AlsaAudioBackend::device_name () const
|
||||
{
|
||||
return _capture_device;
|
||||
return _audio_device;
|
||||
}
|
||||
|
||||
float
|
||||
|
|
@ -363,96 +298,17 @@ AlsaAudioBackend::systemic_output_latency () const
|
|||
}
|
||||
|
||||
/* MIDI */
|
||||
void
|
||||
AlsaAudioBackend::enumerate_midi_devices (std::vector<std::string> &m) const
|
||||
{
|
||||
int cardnum = -1;
|
||||
snd_ctl_card_info_t *cinfo;
|
||||
snd_ctl_card_info_alloca (&cinfo);
|
||||
while (snd_card_next (&cardnum) >= 0 && cardnum >= 0) {
|
||||
snd_ctl_t *handle;
|
||||
std::string devname = "hw:";
|
||||
devname += PBD::to_string (cardnum, std::dec);
|
||||
if (snd_ctl_open (&handle, devname.c_str (), 0) >= 0 && snd_ctl_card_info (handle, cinfo) >= 0) {
|
||||
int device = -1;
|
||||
while (snd_ctl_rawmidi_next_device (handle, &device) >= 0 && device >= 0) {
|
||||
snd_rawmidi_info_t *info;
|
||||
snd_rawmidi_info_alloca (&info);
|
||||
snd_rawmidi_info_set_device (info, device);
|
||||
|
||||
int subs_in, subs_out;
|
||||
|
||||
snd_rawmidi_info_set_stream (info, SND_RAWMIDI_STREAM_INPUT);
|
||||
if (snd_ctl_rawmidi_info (handle, info) >= 0) {
|
||||
subs_in = snd_rawmidi_info_get_subdevices_count (info);
|
||||
} else {
|
||||
subs_in = 0;
|
||||
}
|
||||
|
||||
snd_rawmidi_info_set_stream (info, SND_RAWMIDI_STREAM_OUTPUT);
|
||||
if (snd_ctl_rawmidi_info (handle, info) >= 0) {
|
||||
subs_out = snd_rawmidi_info_get_subdevices_count (info);
|
||||
} else {
|
||||
subs_out = 0;
|
||||
}
|
||||
|
||||
const int subs = subs_in > subs_out ? subs_in : subs_out;
|
||||
if (!subs) {
|
||||
continue;
|
||||
}
|
||||
|
||||
for (int sub = 0; sub < subs; ++sub) {
|
||||
snd_rawmidi_info_set_stream (info, sub < subs_in ?
|
||||
SND_RAWMIDI_STREAM_INPUT :
|
||||
SND_RAWMIDI_STREAM_OUTPUT);
|
||||
|
||||
snd_rawmidi_info_set_subdevice (info, sub);
|
||||
if (snd_ctl_rawmidi_info (handle, info) < 0) {
|
||||
continue;
|
||||
}
|
||||
|
||||
const char *sub_name = snd_rawmidi_info_get_subdevice_name (info);
|
||||
if (sub == 0 && sub_name[0] == '\0') {
|
||||
devname = "hw:";
|
||||
devname += snd_ctl_card_info_get_id (cinfo);
|
||||
devname += ",";
|
||||
devname += PBD::to_string (device, std::dec);
|
||||
devname += " ";
|
||||
devname += snd_rawmidi_info_get_name (info);
|
||||
devname += " (";
|
||||
if (sub < subs_in) devname += "I";
|
||||
if (sub < subs_out) devname += "O";
|
||||
devname += ")";
|
||||
m.push_back (devname);
|
||||
break;
|
||||
} else {
|
||||
devname = "hw:";
|
||||
devname += snd_ctl_card_info_get_id (cinfo);
|
||||
devname += ",";
|
||||
devname += PBD::to_string (device, std::dec);
|
||||
devname += ",";
|
||||
devname += PBD::to_string (sub, std::dec);
|
||||
devname += " ";
|
||||
devname += sub_name;
|
||||
devname += " (";
|
||||
if (sub < subs_in) devname += "I";
|
||||
if (sub < subs_out) devname += "O";
|
||||
devname += ")";
|
||||
m.push_back (devname);
|
||||
}
|
||||
}
|
||||
}
|
||||
snd_ctl_close (handle);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
std::vector<std::string>
|
||||
AlsaAudioBackend::enumerate_midi_options () const
|
||||
{
|
||||
std::vector<std::string> m;
|
||||
m.push_back (_("-None-"));
|
||||
enumerate_midi_devices(m);
|
||||
std::map<std::string, std::string> devices;
|
||||
get_alsa_rawmidi_device_names(devices);
|
||||
|
||||
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
||||
m.push_back (i->first);
|
||||
}
|
||||
if (m.size() > 2) {
|
||||
m.push_back (_("-All-"));
|
||||
}
|
||||
|
|
@ -503,9 +359,18 @@ AlsaAudioBackend::_start (bool for_latency_measurement)
|
|||
assert(_rmidi_out.size() == 0);
|
||||
assert(_pcmi == 0);
|
||||
|
||||
unsigned int pos = _capture_device.find(" ");
|
||||
acquire_device(_capture_device.substr(0, pos).c_str());
|
||||
_pcmi = new Alsa_pcmi (_capture_device.substr(0, pos).c_str(), _playback_device.substr(0, pos).c_str(), 0, _samplerate, _samples_per_period, _periods_per_cycle, 0);
|
||||
std::string alsa_device;
|
||||
std::map<std::string, std::string> devices;
|
||||
get_alsa_audio_device_names(devices);
|
||||
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
||||
if (i->first == _audio_device) {
|
||||
alsa_device = i->second;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
acquire_device(alsa_device.c_str());
|
||||
_pcmi = new Alsa_pcmi (alsa_device.c_str(), alsa_device.c_str(), 0, _samplerate, _samples_per_period, _periods_per_cycle, 0);
|
||||
switch (_pcmi->state ()) {
|
||||
case 0: /* OK */ break;
|
||||
case -1: PBD::error << _("AlsaAudioBackend: failed to open device.") << endmsg; break;
|
||||
|
|
@ -947,10 +812,20 @@ AlsaAudioBackend::register_system_midi_ports()
|
|||
return 0;
|
||||
}
|
||||
else if (_midi_device == _("-All-")) {
|
||||
enumerate_midi_devices(devices);
|
||||
std::map<std::string, std::string> devmap;
|
||||
get_alsa_rawmidi_device_names(devmap);
|
||||
for (std::map<std::string, std::string>::const_iterator i = devmap.begin (); i != devmap.end(); ++i) {
|
||||
devices.push_back (i->second);
|
||||
}
|
||||
} else {
|
||||
unsigned int pos = _midi_device.find(" ");
|
||||
devices.push_back(_midi_device.substr(0, pos));
|
||||
std::map<std::string, std::string> devmap;
|
||||
get_alsa_rawmidi_device_names(devmap);
|
||||
for (std::map<std::string, std::string>::const_iterator i = devmap.begin (); i != devmap.end(); ++i) {
|
||||
if (i->first == _midi_device) {
|
||||
devices.push_back (i->second);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (std::vector<std::string>::const_iterator i = devices.begin (); i != devices.end (); ++i) {
|
||||
|
|
|
|||
|
|
@ -285,8 +285,7 @@ class AlsaAudioBackend : public AudioBackend {
|
|||
bool _freewheeling;
|
||||
|
||||
void enumerate_midi_devices (std::vector<std::string> &) const;
|
||||
std::string _capture_device;
|
||||
std::string _playback_device;
|
||||
std::string _audio_device;
|
||||
std::string _midi_device;
|
||||
|
||||
float _samplerate;
|
||||
|
|
|
|||
|
|
@ -31,7 +31,7 @@ def build(bld):
|
|||
obj.includes = ['.']
|
||||
obj.name = 'alsa_audiobackend'
|
||||
obj.target = 'alsa_audiobackend'
|
||||
obj.use = 'libardour libpbd'
|
||||
obj.use = 'libardour libpbd ardouralsautil'
|
||||
obj.uselib = 'ALSA'
|
||||
obj.vnum = ALSABACKEND_VERSION
|
||||
obj.install_path = os.path.join(bld.env['LIBDIR'], 'backends')
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue