replace common qcom sources with samsung ones

qcom/opensource/display-intf/snapalloc/SnapHandle.h

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Changes from Qualcomm Innovation Center are provided under the following license:
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause-Clear
+ */
+
+#ifndef __SNAPALLOC_SNAPHANDLE_H__
+#define __SNAPALLOC_SNAPHANDLE_H__
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+namespace vendor {
+namespace qti {
+namespace hardware {
+namespace display {
+namespace snapalloc {
+
+#define SNAP_HANDLE_MAX_FDS 1024
+#define SNAP_HANDLE_MAX_INTS 1024
+
+class SnapHandle {
+ public:
+  ~SnapHandle(){};
+  SnapHandle(){};
+
+  int version;
+  int num_fds;  /* number of file descriptors at &buffer_data[0] */
+  int num_ints; /* number of ints at &buffer_data[num_fds] */
+#if defined(__clang__)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wzero-length-array"
+#endif
+  int buffer_data[0]; /* num_fds + num_ints ints */
+#if defined(__clang__)
+#pragma clang diagnostic pop
+#endif
+};
+
+inline SnapHandle *snap_handle_create(int num_fds, int num_ints) {
+  if (num_fds < 0 || num_ints < 0 || num_fds > SNAP_HANDLE_MAX_FDS || num_ints > SNAP_HANDLE_MAX_INTS) {
+    errno = EINVAL;
+    return NULL;
+  }
+  size_t handle_size = sizeof(SnapHandle) + (sizeof(int) * (num_fds + num_ints));
+  SnapHandle *h = static_cast<SnapHandle *>(malloc(handle_size));
+  if (h) {
+    h->version = sizeof(SnapHandle);
+    h->num_fds = num_fds;
+    h->num_ints = num_ints;
+  }
+  return h;
+}
+
+inline int snap_handle_delete(SnapHandle *h) {
+  if (h) {
+    if (h->version != sizeof(SnapHandle))
+      return -EINVAL;
+    free(h);
+  }
+  return 0;
+}
+
+}  // namespace snapalloc
+}  // namespace display
+}  // namespace hardware
+}  // namespace qti
+}  // namespace vendor
+
+#endif  // __SNAPALLOC_SNAPHANDLE_H__