Start adding FastCapture based on FastThread WIP
This version supports at most one fast capture client.
Change-Id: Idf609bfc80ae22433433d66a5232c043c65506df
diff --git a/services/audioflinger/FastCapture.h b/services/audioflinger/FastCapture.h
new file mode 100644
index 0000000..e535b9d
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+++ b/services/audioflinger/FastCapture.h
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+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ANDROID_AUDIO_FAST_CAPTURE_H
+#define ANDROID_AUDIO_FAST_CAPTURE_H
+
+#include "FastThread.h"
+#include "StateQueue.h"
+#include "FastCaptureState.h"
+
+namespace android {
+
+typedef StateQueue<FastCaptureState> FastCaptureStateQueue;
+
+struct FastCaptureDumpState : FastThreadDumpState {
+ FastCaptureDumpState();
+ /*virtual*/ ~FastCaptureDumpState();
+
+ // FIXME by renaming, could pull up many of these to FastThreadDumpState
+ uint32_t mReadSequence; // incremented before and after each read()
+ uint32_t mFramesRead; // total number of frames read successfully
+ uint32_t mReadErrors; // total number of read() errors
+ uint32_t mSampleRate;
+ size_t mFrameCount;
+};
+
+class FastCapture : public FastThread {
+
+public:
+ FastCapture();
+ virtual ~FastCapture();
+
+ FastCaptureStateQueue* sq();
+
+private:
+ FastCaptureStateQueue mSQ;
+
+ // callouts
+ virtual const FastThreadState *poll();
+ virtual void setLog(NBLog::Writer *logWriter);
+ virtual void onIdle();
+ virtual void onExit();
+ virtual bool isSubClassCommand(FastThreadState::Command command);
+ virtual void onStateChange();
+ virtual void onWork();
+
+ static const FastCaptureState initial;
+ FastCaptureState preIdle; // copy of state before we went into idle
+ // FIXME by renaming, could pull up many of these to FastThread
+ NBAIO_Source *inputSource;
+ int inputSourceGen;
+ NBAIO_Sink *pipeSink;
+ int pipeSinkGen;
+ short *readBuffer;
+ ssize_t readBufferState; // number of initialized frames in readBuffer, or -1 to clear
+ NBAIO_Format format;
+ unsigned sampleRate;
+ FastCaptureDumpState dummyDumpState;
+ uint32_t totalNativeFramesRead; // copied to dumpState->mFramesRead
+
+}; // class FastCapture
+
+} // namespace android
+
+#endif // ANDROID_AUDIO_FAST_CAPTURE_H