void CAESinkALSA::EnumerateDevice(AEDeviceInfoList &list, const std::string &device, const std::string &description, snd_config_t *config)
{
snd_pcm_t *pcmhandle = NULL;
if (!OpenPCMDevice(device, "", ALSA_MAX_CHANNELS, &pcmhandle, config))
return;
snd_pcm_info_t *pcminfo;
snd_pcm_info_alloca(&pcminfo);
memset(pcminfo, 0, snd_pcm_info_sizeof());
int err = snd_pcm_info(pcmhandle, pcminfo);
if (err < 0)
{
CLog::Log(LOGINFO, "CAESinkALSA - Unable to get pcm_info for \"%s\"", device.c_str());
snd_pcm_close(pcmhandle);
}
int cardNr = snd_pcm_info_get_card(pcminfo);
CAEDeviceInfo info;
info.m_deviceName = device;
info.m_deviceType = AEDeviceTypeFromName(device);
if (cardNr >= 0)
{
/* "HDA NVidia", "HDA Intel", "HDA ATI HDMI", "SB Live! 24-bit External", ... */
char *cardName;
if (snd_card_get_name(cardNr, &cardName) == 0)
info.m_displayName = cardName;
if (info.m_deviceType == AE_DEVTYPE_HDMI && info.m_displayName.size() > 5 &&
info.m_displayName.substr(info.m_displayName.size()-5) == " HDMI")
{
/* We already know this is HDMI, strip it */
info.m_displayName.erase(info.m_displayName.size()-5);
}
/* "CONEXANT Analog", "USB Audio", "HDMI 0", "ALC889 Digital" ... */
std::string pcminfoName = snd_pcm_info_get_name(pcminfo);
/*
* Filter "USB Audio", in those cases snd_card_get_name() is more
* meaningful already
*/
if (pcminfoName != "USB Audio")
info.m_displayNameExtra = pcminfoName;
if (info.m_deviceType == AE_DEVTYPE_HDMI)
{
/* replace, this was likely "HDMI 0" */
info.m_displayNameExtra = "HDMI";
int dev = snd_pcm_info_get_device(pcminfo);
if (dev >= 0)
{
/* lets see if we can get ELD info */
snd_ctl_t *ctlhandle;
std::stringstream sstr;
sstr << "hw:" << cardNr;
std::string strHwName = sstr.str();
if (snd_ctl_open_lconf(&ctlhandle, strHwName.c_str(), 0, config) == 0)
{
snd_hctl_t *hctl;
if (snd_hctl_open_ctl(&hctl, ctlhandle) == 0)
{
snd_hctl_load(hctl);
bool badHDMI = false;
if (!GetELD(hctl, dev, info, badHDMI))
CLog::Log(LOGDEBUG, "CAESinkALSA - Unable to obtain ELD information for device \"%s\" (not supported by device, or kernel older than 3.2)",
device.c_str());
/* snd_hctl_close also closes ctlhandle */
snd_hctl_close(hctl);
if (badHDMI)
{
/*
* Warn about disconnected devices, but keep them enabled
* Detection can go wrong on Intel, Nvidia and on all
* AMD (fglrx) hardware, so it is not safe to close those
* handles
*/
CLog::Log(LOGDEBUG, "CAESinkALSA - HDMI device \"%s\" may be unconnected (no ELD data)", device.c_str());
}
}
else
{
snd_ctl_close(ctlhandle);
}
}
}
}
else if (info.m_deviceType == AE_DEVTYPE_IEC958)
{
/* append instead of replace, pcminfoName is useful for S/PDIF */
if (!info.m_displayNameExtra.empty())
info.m_displayNameExtra += ' ';
info.m_displayNameExtra += "S/PDIF";
}
else if (info.m_displayNameExtra.empty())
{
/* for USB audio, it gets a bit confusing as there is
* - "SB Live! 24-bit External"
* - "SB Live! 24-bit External, S/PDIF"
* so add "Analog" qualifier to the first one */
info.m_displayNameExtra = "Analog";
}
/* "default" is a device that will be used for all inputs, while
* "@" will be mangled to front/default/surroundXX as necessary */
if (device == "@" || device == "default")
{
/* Make it "Default (whatever)" */
info.m_displayName = "Default (" + info.m_displayName + (info.m_displayNameExtra.empty() ? "" : " " + info.m_displayNameExtra + ")");
info.m_displayNameExtra = "";
}
}
else
{
/* virtual devices: "default", "pulse", ... */
/* description can be e.g. "PulseAudio Sound Server" - for hw devices it is
* normally uninteresting, like "HDMI Audio Output" or "Default Audio Device",
* so we only use it for virtual devices that have no better display name */
info.m_displayName = description;
}
snd_pcm_hw_params_t *hwparams;
snd_pcm_hw_params_alloca(&hwparams);
memset(hwparams, 0, snd_pcm_hw_params_sizeof());
/* ensure we can get a playback configuration for the device */
if (snd_pcm_hw_params_any(pcmhandle, hwparams) < 0)
{
CLog::Log(LOGINFO, "CAESinkALSA - No playback configurations available for device \"%s\"", device.c_str());
snd_pcm_close(pcmhandle);
return;
}
/* detect the available sample rates */
for (unsigned int *rate = ALSASampleRateList; *rate != 0; ++rate)
if (snd_pcm_hw_params_test_rate(pcmhandle, hwparams, *rate, 0) >= 0)
info.m_sampleRates.push_back(*rate);
/* detect the channels available */
int channels = 0;
for (int i = ALSA_MAX_CHANNELS; i >= 1; --i)
{
/* Reopen the device if needed on the special "surroundXX" cases */
if (info.m_deviceType == AE_DEVTYPE_PCM && (i == 8 || i == 6 || i == 4))
OpenPCMDevice(device, "", i, &pcmhandle, config);
if (snd_pcm_hw_params_test_channels(pcmhandle, hwparams, i) >= 0)
{
channels = i;
break;
}
}
if (device == "default" && channels == 2)
{
/* This looks like the ALSA standard default stereo dmix device, we
* probably want to use "@" instead to get surroundXX. */
snd_pcm_close(pcmhandle);
EnumerateDevice(list, "@", description, config);
return;
}
CAEChannelInfo alsaChannels;
for (int i = 0; i < channels; ++i)
{
if (!info.m_channels.HasChannel(ALSAChannelMap[i]))
info.m_channels += ALSAChannelMap[i];
alsaChannels += ALSAChannelMap[i];
}
/* remove the channels from m_channels that we cant use */
info.m_channels.ResolveChannels(alsaChannels);
/* detect the PCM sample formats that are available */
for (enum AEDataFormat i = AE_FMT_MAX; i > AE_FMT_INVALID; i = (enum AEDataFormat)((int)i - 1))
{
if (AE_IS_RAW(i) || i == AE_FMT_MAX)
continue;
snd_pcm_format_t fmt = AEFormatToALSAFormat(i);
if (fmt == SND_PCM_FORMAT_UNKNOWN)
continue;
if (snd_pcm_hw_params_test_format(pcmhandle, hwparams, fmt) >= 0)
info.m_dataFormats.push_back(i);
}
snd_pcm_close(pcmhandle);
list.push_back(info);
}
void CAESinkALSA::EnumerateDevicesEx(AEDeviceInfoList &list)
{
/* ensure that ALSA has been initialized */
if(!snd_config)
snd_config_update();
snd_ctl_t *ctlhandle;
snd_pcm_t *pcmhandle;
snd_ctl_card_info_t *ctlinfo;
snd_ctl_card_info_alloca(&ctlinfo);
memset(ctlinfo, 0, snd_ctl_card_info_sizeof());
snd_pcm_hw_params_t *hwparams;
snd_pcm_hw_params_alloca(&hwparams);
memset(hwparams, 0, snd_pcm_hw_params_sizeof());
snd_pcm_info_t *pcminfo;
snd_pcm_info_alloca(&pcminfo);
memset(pcminfo, 0, snd_pcm_info_sizeof());
/* get the sound config */
snd_config_t *config;
snd_config_copy(&config, snd_config);
std::string strHwName;
int n_cards = -1;
while (snd_card_next(&n_cards) == 0 && n_cards != -1)
{
std::stringstream sstr;
sstr << "hw:" << n_cards;
std::string strHwName = sstr.str();
if (snd_ctl_open_lconf(&ctlhandle, strHwName.c_str(), 0, config) != 0)
{
CLog::Log(LOGDEBUG, "CAESinkALSA::EnumerateDevicesEx - Unable to open control for device %s", strHwName.c_str());
continue;
}
if (snd_ctl_card_info(ctlhandle, ctlinfo) != 0)
{
CLog::Log(LOGDEBUG, "CAESinkALSA::EnumerateDevicesEx - Unable to get card control info for device %s", strHwName.c_str());
snd_ctl_close(ctlhandle);
continue;
}
snd_hctl_t *hctl;
if (snd_hctl_open_ctl(&hctl, ctlhandle) != 0)
hctl = NULL;
snd_hctl_load(hctl);
int pcm_index = 0;
int iec958_index = 0;
int hdmi_index = 0;
int dev = -1;
while (snd_ctl_pcm_next_device(ctlhandle, &dev) == 0 && dev != -1)
{
snd_pcm_info_set_device (pcminfo, dev);
snd_pcm_info_set_subdevice(pcminfo, 0 );
snd_pcm_info_set_stream (pcminfo, SND_PCM_STREAM_PLAYBACK);
if (snd_ctl_pcm_info(ctlhandle, pcminfo) < 0)
{
CLog::Log(LOGDEBUG, "CAESinkALSA::EnumerateDevicesEx - Skipping device %s,%d as it does not have PCM playback ability", strHwName.c_str(), dev);
continue;
}
int dev_index;
sstr.str(std::string());
CAEDeviceInfo info;
std::string devname = snd_pcm_info_get_name(pcminfo);
bool maybeHDMI = false;
/* detect HDMI */
if (devname.find("HDMI") != std::string::npos)
{
info.m_deviceType = AE_DEVTYPE_HDMI;
dev_index = hdmi_index++;
sstr << "hdmi";
}
else
{
/* detect IEC958 */
/* some HDMI devices (intel) report Digital for HDMI also */
if (devname.find("Digital") != std::string::npos)
maybeHDMI = true;
if (maybeHDMI || devname.find("IEC958" ) != std::string::npos)
{
info.m_deviceType = AE_DEVTYPE_IEC958;
dev_index = iec958_index; /* dont increment, it might be HDMI */
sstr << "iec958";
}
else
{
info.m_deviceType = AE_DEVTYPE_PCM;
dev_index = pcm_index++;
sstr << "hw";
}
}
/* build the driver string to pass to ALSA */
sstr << ":CARD=" << snd_ctl_card_info_get_id(ctlinfo) << ",DEV=" << dev_index;
info.m_deviceName = sstr.str();
/* get the friendly display name*/
info.m_displayName = snd_ctl_card_info_get_name(ctlinfo);
info.m_displayNameExtra = devname;
/* open the device for testing */
int err = snd_pcm_open_lconf(&pcmhandle, info.m_deviceName.c_str(), SND_PCM_STREAM_PLAYBACK, 0, config);
/* if open of possible IEC958 failed and it could be HDMI, try as HDMI */
if (err < 0 && maybeHDMI)
{
/* check for HDMI if it failed */
sstr.str(std::string());
dev_index = hdmi_index;
sstr << "hdmi";
sstr << ":CARD=" << snd_ctl_card_info_get_id(ctlinfo) << ",DEV=" << dev_index;
info.m_deviceName = sstr.str();
err = snd_pcm_open_lconf(&pcmhandle, info.m_deviceName.c_str(), SND_PCM_STREAM_PLAYBACK, 0, config);
/* if it was valid, increment the index and set the type */
if (err >= 0)
{
++hdmi_index;
info.m_deviceType = AE_DEVTYPE_HDMI;
}
}
/* if it's still IEC958, increment the index */
if (info.m_deviceType == AE_DEVTYPE_IEC958)
++iec958_index;
/* final error check */
if (err < 0)
{
CLog::Log(LOGINFO, "CAESinkALSA::EnumerateDevicesEx - Unable to open %s for capability detection", strHwName.c_str());
continue;
}
/* see if we can get ELD for this device */
if (info.m_deviceType == AE_DEVTYPE_HDMI)
{
bool badHDMI = false;
if (hctl && !GetELD(hctl, dev, info, badHDMI))
CLog::Log(LOGDEBUG, "CAESinkALSA::EnumerateDevicesEx - Unable to obtain ELD information for device %s, make sure you have ALSA >= 1.0.25", info.m_deviceName.c_str());
if (badHDMI)
{
CLog::Log(LOGDEBUG, "CAESinkALSA::EnumerateDevicesEx - Skipping HDMI device %s as it has no ELD data", info.m_deviceName.c_str());
continue;
}
}
/* ensure we can get a playback configuration for the device */
if (snd_pcm_hw_params_any(pcmhandle, hwparams) < 0)
{
CLog::Log(LOGINFO, "CAESinkALSA::EnumerateDevicesEx - No playback configurations available for device %s", info.m_deviceName.c_str());
snd_pcm_close(pcmhandle);
continue;
}
/* detect the available sample rates */
for (unsigned int *rate = ALSASampleRateList; *rate != 0; ++rate)
if (snd_pcm_hw_params_test_rate(pcmhandle, hwparams, *rate, 0) >= 0)
info.m_sampleRates.push_back(*rate);
/* detect the channels available */
int channels = 0;
for (int i = 1; i <= ALSA_MAX_CHANNELS; ++i)
if (snd_pcm_hw_params_test_channels(pcmhandle, hwparams, i) >= 0)
channels = i;
CAEChannelInfo alsaChannels;
for (int i = 0; i < channels; ++i)
{
if (!info.m_channels.HasChannel(ALSAChannelMap[i]))
info.m_channels += ALSAChannelMap[i];
alsaChannels += ALSAChannelMap[i];
}
/* remove the channels from m_channels that we cant use */
info.m_channels.ResolveChannels(alsaChannels);
/* detect the PCM sample formats that are available */
for (enum AEDataFormat i = AE_FMT_MAX; i > AE_FMT_INVALID; i = (enum AEDataFormat)((int)i - 1))
{
if (AE_IS_RAW(i) || i == AE_FMT_MAX)
continue;
snd_pcm_format_t fmt = AEFormatToALSAFormat(i);
if (fmt == SND_PCM_FORMAT_UNKNOWN)
continue;
if (snd_pcm_hw_params_test_format(pcmhandle, hwparams, fmt) >= 0)
info.m_dataFormats.push_back(i);
}
snd_pcm_close(pcmhandle);
list.push_back(info);
}
/* snd_hctl_close also closes ctlhandle */
if (hctl)
snd_hctl_close(hctl);
else
snd_ctl_close(ctlhandle);
}
}