1 /* 2 * Copyright (C) 2020 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 #include <assert.h> 18 #include <stdint.h> 19 20 #include <system/audio.h> 21 22 // Ensure that bit mask enum types have 32-bit size. 23 // There is a lot of code that assumes this. 24 25 // Note that audio_devices_t is not a pure mask type since R, 26 // however there is legacy code which can mix its usage with uint32_t. 27 28 #define AUDIO_ENUM_MASKS_LIST(V) \ 29 V(audio_channel_mask_t) \ 30 V(audio_channel_representation_t) \ 31 V(audio_devices_t) \ 32 V(audio_flags_mask_t) \ 33 V(audio_gain_mode_t) \ 34 V(audio_input_flags_t) \ 35 V(audio_output_flags_t) 36 37 #define AUDIO_ASSERT_ENUM_MASK_SIZE(t) \ 38 static_assert(sizeof(t) == sizeof(uint32_t), "The size of \'" #t "\' type must be 32 bits"); 39 AUDIO_ENUM_MASKS_LIST(AUDIO_ASSERT_ENUM_MASK_SIZE); 40 #undef AUDIO_ASSERT_ENUM_MASK_SIZE 41 #undef AUDIO_ENUM_MASKS_LIST 42