1 // Copyright 2021 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef ANDROID_V4L2_CODEC2_PLUGIN_STORE_DMABUF_HELPERS_H 6 #define ANDROID_V4L2_CODEC2_PLUGIN_STORE_DMABUF_HELPERS_H 7 8 #include <inttypes.h> 9 10 #include <optional> 11 12 namespace android { 13 14 // We use the value of dma-buf inode as the unique ID of the graphic buffers. 15 using unique_id_t = uint32_t; 16 std::optional<unique_id_t> getDmabufId(int dmabufFd); 17 18 } // namespace android 19 20 #endif // ANDROID_V4L2_CODEC2_PLUGIN_STORE_DMABUF_HELPERS_H 21