1 files changed, 113 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/video_capture/linux/device_info_pipewire.cc b/third_party/libwebrtc/modules/video_capture/linux/device_info_pipewire.cc
new file mode 100644
index 0000000000..ad6cea57b8
--- /dev/null
+++ b/third_party/libwebrtc/modules/video_capture/linux/device_info_pipewire.cc
@@ -0,0 +1,113 @@
+/*
+ *  Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "modules/video_capture/linux/device_info_pipewire.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#include <vector>
+
+#include "modules/video_capture/video_capture.h"
+#include "modules/video_capture/video_capture_defines.h"
+#include "modules/video_capture/video_capture_impl.h"
+#include "modules/video_capture/video_capture_options.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+namespace videocapturemodule {
+DeviceInfoPipeWire::DeviceInfoPipeWire(VideoCaptureOptions* options)
+    : DeviceInfoImpl(), pipewire_session_(options->pipewire_session()) {}
+
+int32_t DeviceInfoPipeWire::Init() {
+  return 0;
+}
+
+DeviceInfoPipeWire::~DeviceInfoPipeWire() = default;
+
+uint32_t DeviceInfoPipeWire::NumberOfDevices() {
+  return pipewire_session_->nodes().size();
+}
+
+int32_t DeviceInfoPipeWire::GetDeviceName(uint32_t deviceNumber,
+                                          char* deviceNameUTF8,
+                                          uint32_t deviceNameLength,
+                                          char* deviceUniqueIdUTF8,
+                                          uint32_t deviceUniqueIdUTF8Length,
+                                          char* productUniqueIdUTF8,
+                                          uint32_t productUniqueIdUTF8Length,
+                                          pid_t* pid,
+                                          bool* deviceIsPlaceholder) {
+  if (deviceNumber >= NumberOfDevices())
+    return -1;
+
+  const PipeWireNode& node = pipewire_session_->nodes().at(deviceNumber);
+
+  if (deviceNameLength <= node.display_name().length()) {
+    RTC_LOG(LS_INFO) << "deviceNameUTF8 buffer passed is too small";
+    return -1;
+  }
+  if (deviceUniqueIdUTF8Length <= node.unique_id().length()) {
+    RTC_LOG(LS_INFO) << "deviceUniqueIdUTF8 buffer passed is too small";
+    return -1;
+  }
+  if (productUniqueIdUTF8 &&
+      productUniqueIdUTF8Length <= node.model_id().length()) {
+    RTC_LOG(LS_INFO) << "productUniqueIdUTF8 buffer passed is too small";
+    return -1;
+  }
+
+  memset(deviceNameUTF8, 0, deviceNameLength);
+  node.display_name().copy(deviceNameUTF8, deviceNameLength);
+
+  memset(deviceUniqueIdUTF8, 0, deviceUniqueIdUTF8Length);
+  node.unique_id().copy(deviceUniqueIdUTF8, deviceUniqueIdUTF8Length);
+
+  if (productUniqueIdUTF8) {
+    memset(productUniqueIdUTF8, 0, productUniqueIdUTF8Length);
+    node.model_id().copy(productUniqueIdUTF8, productUniqueIdUTF8Length);
+  }
+
+  return 0;
+}
+
+int32_t DeviceInfoPipeWire::CreateCapabilityMap(
+    const char* deviceUniqueIdUTF8) {
+  for (auto& node : pipewire_session_->nodes()) {
+    if (node.unique_id().compare(deviceUniqueIdUTF8) != 0)
+      continue;
+
+    _captureCapabilities = node.capabilities();
+    _lastUsedDeviceNameLength = node.unique_id().length();
+    _lastUsedDeviceName = static_cast<char*>(
+        realloc(_lastUsedDeviceName, _lastUsedDeviceNameLength + 1));
+    memcpy(_lastUsedDeviceName, deviceUniqueIdUTF8,
+           _lastUsedDeviceNameLength + 1);
+    return _captureCapabilities.size();
+  }
+  return -1;
+}
+
+int32_t DeviceInfoPipeWire::DisplayCaptureSettingsDialogBox(
+    const char* /*deviceUniqueIdUTF8*/,
+    const char* /*dialogTitleUTF8*/,
+    void* /*parentWindow*/,
+    uint32_t /*positionX*/,
+    uint32_t /*positionY*/) {
+  return -1;
+}
+
+}  // namespace videocapturemodule
+}  // namespace webrtc