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// Copyright (c) 2012-2017 VideoStitch SAS
// Copyright (c) 2018 stitchEm
#include "magewell_helpers.hpp"
#include "libvideostitch/logging.hpp"
#include <codecvt>
namespace VideoStitch {
namespace Magewell {
SupportedMagewellCaptureFamily retrieveCaptureFamily(const VIDEO_CAPTURE_INFO_EX& videoCaptureInfo) {
if (videoCaptureInfo.deviceType == XI_DEVICE_HDVIDEO_CAPTURE) {
return SupportedMagewellCaptureFamily::FirstGenerationCaptureFamily;
} else if (videoCaptureInfo.deviceType == PRO_CAPTURE) {
return SupportedMagewellCaptureFamily::ProCaptureFamily;
} else {
std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> converter;
std::string videoDeviceCompleteId = converter.to_bytes(std::wstring(videoCaptureInfo.szDShowID));
if (videoDeviceCompleteId.find("usb") != std::string::npos) {
return SupportedMagewellCaptureFamily::UsbCaptureFamily;
} else {
return SupportedMagewellCaptureFamily::UnknownFamily;
}
}
}
std::string extractMeaningfulDeviceId(const std::string& deviceCompleteId, const std::string& hardwareType) {
size_t hardwarePosition = deviceCompleteId.find(hardwareType);
size_t bracePosition = deviceCompleteId.find("{", hardwarePosition);
if (hardwarePosition == std::string::npos || bracePosition == std::string::npos) {
return std::string();
} else {
return deviceCompleteId.substr(hardwarePosition, bracePosition - hardwarePosition);
}
}
void extractUsbMeaningfulDeviceIdParts(const std::string& deviceCompleteId, std::string& firstIdPart,
std::string& secondIdPart) {
std::string cardId = extractMeaningfulDeviceId(deviceCompleteId, "usb");
if (cardId.empty()) {
return;
}
size_t lastAndPosition = cardId.rfind("&");
size_t lastSharpPosition = cardId.rfind("#", lastAndPosition);
secondIdPart = cardId.substr(lastSharpPosition, lastAndPosition - lastSharpPosition);
size_t previousAndPosition = cardId.rfind("&", lastSharpPosition);
firstIdPart = cardId.substr(0, previousAndPosition);
}
AUDIO_CAPTURE_INFO_EX retrieveAudioCaptureInfo(const VIDEO_CAPTURE_INFO_EX& videoCaptureInfo, bool& ok) {
// For Magewell, audio devices and video devices are not in the same order. So we can't use the device index.
// This method parse the device id to retrieve the audio device from the video device
// We can also use the code of the example named "DeviceMatch" in the latest version of the Magewell SDK 2
// (2.1.0.2008)
ok = false;
std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> converter;
std::string videoDeviceCompleteId = converter.to_bytes(std::wstring(videoCaptureInfo.szDShowID));
SupportedMagewellCaptureFamily family = retrieveCaptureFamily(videoCaptureInfo);
switch (family) {
case SupportedMagewellCaptureFamily::FirstGenerationCaptureFamily:
case SupportedMagewellCaptureFamily::ProCaptureFamily: {
const char videoDeviceIndex = videoDeviceCompleteId.back();
std::string videoCardId = extractMeaningfulDeviceId(videoDeviceCompleteId, "pci");
if (videoCardId.empty()) {
Logger::get(Logger::Error) << "Error! Magewell video device id (" << videoDeviceCompleteId
<< ") not valid. Aborting." << std::endl;
return AUDIO_CAPTURE_INFO_EX();
}
// Stupid Magewell SDK lists all the audio input devices (including the microphone) in random order
int nbAudioCaptures = XIS_GetAudioCaptureCount();
for (int index = 0; index < nbAudioCaptures; ++index) {
AUDIO_CAPTURE_INFO_EX audioCaptureInfo;
if (XIS_GetAudioCaptureInfoEx(index, &audioCaptureInfo) != TRUE) {
Logger::get(Logger::Error)
<< "Error! Magewell library (XIS) could not list available audio devices. Aborting." << std::endl;
return AUDIO_CAPTURE_INFO_EX();
}
std::string deviceName = converter.to_bytes(std::wstring(audioCaptureInfo.szName));
std::string audioDeviceCompleteId = converter.to_bytes(std::wstring(audioCaptureInfo.szID));
Logger::get(Logger::Debug) << "Magewell library (XIS): found audio capture device name: " << deviceName << "."
<< std::endl
<< "Device id: " << audioDeviceCompleteId << std::endl;
const char audioDeviceIndex = audioDeviceCompleteId.back();
std::string audioCardId = extractMeaningfulDeviceId(audioDeviceCompleteId, "pci");
if (audioCardId.empty()) {
// Not a Magewell audio device
continue;
}
if (videoCardId == audioCardId &&
(videoDeviceIndex == audioDeviceIndex || family == SupportedMagewellCaptureFamily::ProCaptureFamily)) {
Logger::get(Logger::Debug) << "Magewell library (XIS): found suitable audio capture device." << std::endl;
ok = true;
return audioCaptureInfo;
}
}
break;
}
case SupportedMagewellCaptureFamily::UsbCaptureFamily: {
std::string firstVideoIdPart, secondVideoIdPart;
extractUsbMeaningfulDeviceIdParts(videoDeviceCompleteId, firstVideoIdPart, secondVideoIdPart);
if (firstVideoIdPart.empty() || secondVideoIdPart.empty()) {
Logger::get(Logger::Error) << "Error! Magewell video device id (" << videoDeviceCompleteId
<< ") not valid. Aborting." << std::endl;
return AUDIO_CAPTURE_INFO_EX();
}
// Stupid Magewell SDK lists all the audio input devices (including the microphone) in random order
int nbAudioCaptures = XIS_GetAudioCaptureCount();
for (int index = 0; index < nbAudioCaptures; ++index) {
AUDIO_CAPTURE_INFO_EX audioCaptureInfo;
if (XIS_GetAudioCaptureInfoEx(index, &audioCaptureInfo) != TRUE) {
Logger::get(Logger::Error)
<< "Error! Magewell library (XIS) could not list available audio devices. Aborting." << std::endl;
return AUDIO_CAPTURE_INFO_EX();
}
std::string deviceName = converter.to_bytes(std::wstring(audioCaptureInfo.szName));
std::string audioDeviceCompleteId = converter.to_bytes(std::wstring(audioCaptureInfo.szID));
Logger::get(Logger::Debug) << "Magewell library (XIS): found audio capture device name: " << deviceName << "."
<< std::endl
<< "Device id: " << audioDeviceCompleteId << std::endl;
std::string firstAudioIdPart, secondAudioIdPart;
extractUsbMeaningfulDeviceIdParts(audioDeviceCompleteId, firstAudioIdPart, secondAudioIdPart);
if (firstAudioIdPart.empty() || secondAudioIdPart.empty()) {
// Not a Magewell audio device
continue;
}
if (firstVideoIdPart == firstAudioIdPart && secondVideoIdPart == secondAudioIdPart) {
Logger::get(Logger::Debug) << "Magewell library (XIS): found suitable audio capture device." << std::endl;
ok = true;
return audioCaptureInfo;
}
}
break;
}
case SupportedMagewellCaptureFamily::UnknownFamily:
default:
break; // nothing
}
Logger::get(Logger::Error)
<< "Error! Magewell library (XIS): aborting. No suitable audio device found for associated video device id: "
<< videoDeviceCompleteId << std::endl;
return AUDIO_CAPTURE_INFO_EX();
}
} // namespace Magewell
} // namespace VideoStitch