void CDevicesDlg::OnBnClickedButtonSave()
{
if (m_CurSel == -1) {
return;
}
if (LVIS_SELECTED != m_listDevs.GetItemState(m_CurSel, LVIS_SELECTED)) {
MessageBox("EEEEE");
return;
}
DumpDevice(m_CurSel);
DeviceInfo& info = m_Devs[m_CurSel];
if (info.Index == -1) {
// New Device
info.Index = m_pAccApi->AddDevice(&info);
if (info.Index == -1) {
MessageBox("Add Device Failed");
}
else {
MessageBox("Add Device Done!");
}
}
else {
int rc = m_pAccApi->ModifyDevice(&info);
if (rc != 0) {
MessageBox("Modify Device Failed");
}
else {
MessageBox("Modify Device Done!");
}
}
}
static int Open (vlc_object_t *obj)
{
demux_t *demux = (demux_t *)obj;
demux_sys_t *sys = vlc_obj_malloc(obj, sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
/* Open the device */
const char *device = demux->psz_location;
if (device == NULL || !device[0])
device = "default";
const int mode = SND_PCM_NONBLOCK
/*| SND_PCM_NO_AUTO_RESAMPLE*/
| SND_PCM_NO_AUTO_CHANNELS
/*| SND_PCM_NO_AUTO_FORMAT*/;
snd_pcm_t *pcm;
int val = snd_pcm_open (&pcm, device, SND_PCM_STREAM_CAPTURE, mode);
if (val != 0)
{
msg_Err (demux, "cannot open ALSA device \"%s\": %s", device,
snd_strerror (val));
return VLC_EGENERIC;
}
sys->pcm = pcm;
msg_Dbg (demux, "using ALSA device: %s", device);
DumpDevice (VLC_OBJECT(demux), pcm);
/* Negotiate capture parameters */
snd_pcm_hw_params_t *hw;
es_format_t fmt;
unsigned param;
int dir;
snd_pcm_hw_params_alloca (&hw);
snd_pcm_hw_params_any (pcm, hw);
Dump (demux, "initial hardware setup:\n", snd_pcm_hw_params_dump, hw);
val = snd_pcm_hw_params_set_rate_resample (pcm, hw, 0);
if (val)
{
msg_Err (demux, "cannot disable resampling: %s", snd_strerror (val));
goto error;
}
val = snd_pcm_hw_params_set_access (pcm, hw,
SND_PCM_ACCESS_RW_INTERLEAVED);
if (val)
{
msg_Err (demux, "cannot set access mode: %s", snd_strerror (val));
goto error;
}
snd_pcm_format_t format = SND_PCM_FORMAT_UNKNOWN;
for (size_t i = 0; i < sizeof (choices) / sizeof (choices[0]); i++)
if (snd_pcm_hw_params_test_format (pcm, hw, choices[i]) == 0)
{
val = snd_pcm_hw_params_set_format (pcm, hw, choices[i]);
if (val)
{
msg_Err (demux, "cannot set sample format: %s",
snd_strerror (val));
goto error;
}
format = choices[i];
break;
}
if (format == SND_PCM_FORMAT_UNKNOWN)
{
msg_Err (demux, "no supported sample format");
goto error;
}
assert ((size_t)format < (sizeof (formats) / sizeof (formats[0])));
es_format_Init (&fmt, AUDIO_ES, formats[format]);
fmt.audio.i_format = fmt.i_codec;
param = 1 + var_InheritBool (demux, "alsa-stereo");
val = snd_pcm_hw_params_set_channels_max (pcm, hw, ¶m);
if (val)
{
msg_Err (demux, "cannot restrict channels count: %s",
snd_strerror (val));
goto error;
}
val = snd_pcm_hw_params_set_channels_last (pcm, hw, ¶m);
if (val)
{
msg_Err (demux, "cannot set channels count: %s", snd_strerror (val));
goto error;
}
assert (param > 0);
assert (param < (sizeof (channel_maps) / sizeof (channel_maps[0])));
fmt.audio.i_channels = param;
fmt.audio.i_physical_channels = channel_maps[param - 1];
param = var_InheritInteger (demux, "alsa-samplerate");
val = snd_pcm_hw_params_set_rate_max (pcm, hw, ¶m, NULL);
if (val)
{
msg_Err (demux, "cannot restrict rate to %u Hz or less: %s", 192000,
snd_strerror (val));
goto error;
}
val = snd_pcm_hw_params_set_rate_last (pcm, hw, ¶m, &dir);
if (val)
{
msg_Err (demux, "cannot set sample rate: %s", snd_strerror (val));
goto error;
}
if (dir)
msg_Warn (demux, "sample rate is not integral");
fmt.audio.i_rate = param;
sys->rate = param;
sys->start = mdate ();
sys->caching = INT64_C(1000) * var_InheritInteger (demux, "live-caching");
param = sys->caching;
val = snd_pcm_hw_params_set_buffer_time_near (pcm, hw, ¶m, NULL);
if (val)
{
msg_Err (demux, "cannot set buffer duration: %s", snd_strerror (val));
goto error;
}
param /= 4;
val = snd_pcm_hw_params_set_period_time_near (pcm, hw, ¶m, NULL);
if (val)
{
msg_Err (demux, "cannot set period: %s", snd_strerror (val));
goto error;
}
val = snd_pcm_hw_params_get_period_size (hw, &sys->period_size, &dir);
if (val)
{
msg_Err (demux, "cannot get period size: %s", snd_strerror (val));
goto error;
}
if (dir > 0)
sys->period_size++;
/* Commit hardware parameters */
val = snd_pcm_hw_params (pcm, hw);
if (val)
{
msg_Err (demux, "cannot commit hardware parameters: %s",
snd_strerror (val));
goto error;
}
Dump (demux, "final HW setup:\n", snd_pcm_hw_params_dump, hw);
/* Kick recording */
aout_FormatPrepare (&fmt.audio);
sys->es = es_out_Add (demux->out, &fmt);
demux->p_sys = sys;
if (vlc_clone (&sys->thread, Thread, demux, VLC_THREAD_PRIORITY_INPUT))
{
es_out_Del (demux->out, sys->es);
goto error;
}
demux->pf_demux = NULL;
demux->pf_control = Control;
return VLC_SUCCESS;
error:
snd_pcm_close (pcm);
return VLC_EGENERIC;
}