1 /* 2 * Copyright (C) 2014 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_AUDIO_FAST_CAPTURE_STATE_H 18 #define ANDROID_AUDIO_FAST_CAPTURE_STATE_H 19 20 #include <media/nbaio/NBAIO.h> 21 #include "FastThreadState.h" 22 #include <private/media/AudioTrackShared.h> 23 24 namespace android { 25 26 // Represent a single state of the fast capture 27 struct FastCaptureState : FastThreadState { 28 FastCaptureState(); 29 /*virtual*/ ~FastCaptureState(); 30 31 // all pointer fields use raw pointers; objects are owned and ref-counted by RecordThread 32 NBAIO_Source* mInputSource; // HAL input device, must already be negotiated 33 // FIXME by renaming, could pull up these fields to FastThreadState 34 int mInputSourceGen; // increment when mInputSource is assigned 35 NBAIO_Sink* mPipeSink; // after reading from input source, write to this pipe sink 36 int mPipeSinkGen; // increment when mPipeSink is assigned 37 size_t mFrameCount; // number of frames per fast capture buffer 38 audio_track_cblk_t* mCblk; // control block for the single fast client, or NULL 39 40 // Extends FastThreadState::Command 41 static const Command 42 // The following commands also process configuration changes, and can be "or"ed: 43 READ = 0x8, // read from input source 44 WRITE = 0x10, // write to pipe sink 45 READ_WRITE = 0x18; // read from input source and write to pipe sink 46 47 // never returns NULL; asserts if command is invalid 48 static const char *commandToString(Command command); 49 }; // struct FastCaptureState 50 51 } // namespace android 52 53 #endif // ANDROID_AUDIO_FAST_CAPTURE_STATE_H 54
