1 /* 2 * Copyright 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_UI_BUFFERQUEUEDEFS_H 18 #define ANDROID_UI_BUFFERQUEUEDEFS_H 19 20 namespace android { 21 namespace BufferQueueDefs { 22 // BufferQueue will keep track of at most this value of buffers. 23 // Attempts at runtime to increase the number of buffers past this 24 // will fail. 25 static constexpr int NUM_BUFFER_SLOTS = 64; 26 27 enum { 28 // A flag returned by dequeueBuffer when the client needs to call 29 // requestBuffer immediately thereafter. 30 BUFFER_NEEDS_REALLOCATION = 0x1, 31 // A flag returned by dequeueBuffer when all mirrored slots should be 32 // released by the client. This flag should always be processed first. 33 RELEASE_ALL_BUFFERS = 0x2, 34 }; 35 36 } // namespace BufferQueueDefs 37 } // namespace android 38 39 #endif 40