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Devices with only I or O Fix

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Added new fields to track ALSA device capabilities, letting the application know whether a device supports capture or playback

Updated serialization to include the new flags in the JSON data exchanged with the UI

Modified the dummy driver so test devices always indicate capture and playback support

Adjusted the TypeScript model and dialog to filter device choices based on the new flags, ensuring only valid options appear in selectors
This commit is contained in:
ExtremesecrecyOne
2025-07-23 12:18:19 -07:00
parent fbd925caca
commit 6ac8968583
5 changed files with 55 additions and 30 deletions
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src/PiPedalAlsa.cpp
+24 -16
View File
@@ -97,20 +97,16 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
info.name_ = snd_ctl_card_info_get_name(alsaInfo);
info.longName_ = snd_ctl_card_info_get_longname(alsaInfo);
snd_pcm_t *hDevice = nullptr;
snd_pcm_t *captureDevice = nullptr;
snd_pcm_t *playbackDevice = nullptr;
bool captureOk = snd_pcm_open(&captureDevice, cardId.c_str(), SND_PCM_STREAM_CAPTURE, 0) == 0;
bool playbackOk = snd_pcm_open(&playbackDevice, cardId.c_str(), SND_PCM_STREAM_PLAYBACK, 0) == 0;
info.supportsCapture_ = captureOk;
info.supportsPlayback_ = playbackOk;
// must support capture AND playback
err = snd_pcm_open(&hDevice, cardId.c_str(), SND_PCM_STREAM_CAPTURE, 0);
if (err == 0)
{
snd_pcm_close(hDevice);
}
if (err == 0)
{
err = snd_pcm_open(&hDevice, cardId.c_str(), SND_PCM_STREAM_PLAYBACK, 0);
}
if (err == 0)
if (captureOk || playbackOk)
{
snd_pcm_t *hDevice = captureOk ? captureDevice : playbackDevice;
snd_pcm_hw_params_t *params = nullptr;
err = snd_pcm_hw_params_malloc(&params);
if (err == 0)
@@ -151,15 +147,25 @@ std::vector<AlsaDeviceInfo> PiPedalAlsaDevices::GetAlsaDevices()
info.minBufferSize_ = (uint32_t)minBufferSize;
info.maxBufferSize_ = (uint32_t)maxBufferSize;
cacheDevice(info.name_, info);
result.push_back(info);
}
}
}
if (params != nullptr)
snd_pcm_hw_params_free(params);
snd_pcm_close(hDevice);
}
if (captureOk)
snd_pcm_close(captureDevice);
if (playbackOk && playbackDevice != captureDevice)
snd_pcm_close(playbackDevice);
if (err == 0)
{
cacheDevice(info.name_, info);
result.push_back(info);
}
else if (getCachedDevice(info.name_, &info))
{
result.push_back(info);
}
}
else
{
if (getCachedDevice(info.name_, &info))
@@ -480,6 +486,8 @@ JSON_MAP_REFERENCE(AlsaDeviceInfo, longName)
JSON_MAP_REFERENCE(AlsaDeviceInfo, sampleRates)
JSON_MAP_REFERENCE(AlsaDeviceInfo, minBufferSize)
JSON_MAP_REFERENCE(AlsaDeviceInfo, maxBufferSize)
JSON_MAP_REFERENCE(AlsaDeviceInfo, supportsCapture)
JSON_MAP_REFERENCE(AlsaDeviceInfo, supportsPlayback)
JSON_MAP_END()
JSON_MAP_BEGIN(AlsaMidiDeviceInfo)