Start adding FastCapture based on FastThread WIP

This version supports at most one fast capture client.

Change-Id: Idf609bfc80ae22433433d66a5232c043c65506df

1 files changed, 51 insertions, 0 deletions

diff --git a/services/audioflinger/FastCaptureState.h b/services/audioflinger/FastCaptureState.h
new file mode 100644
index 0000000..29c865a
--- /dev/null
+++ b/services/audioflinger/FastCaptureState.h
@@ -0,0 +1,51 @@
+/*
+ * 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_STATE_H
+#define ANDROID_AUDIO_FAST_CAPTURE_STATE_H
+
+#include <media/nbaio/NBAIO.h>
+#include "FastThreadState.h"
+#include <private/media/AudioTrackShared.h>
+
+namespace android {
+
+// Represent a single state of the fast capture
+struct FastCaptureState : FastThreadState {
+                FastCaptureState();
+    /*virtual*/ ~FastCaptureState();
+
+    // all pointer fields use raw pointers; objects are owned and ref-counted by RecordThread
+    NBAIO_Source    *mInputSource;      // HAL input device, must already be negotiated
+    // FIXME by renaming, could pull up these fields to FastThreadState
+    int             mInputSourceGen;    // increment when mInputSource is assigned
+    NBAIO_Sink      *mPipeSink;         // after reading from input source, write to this pipe sink
+    int             mPipeSinkGen;       // increment when mPipeSink is assigned
+    size_t          mFrameCount;        // number of frames per fast capture buffer
+    audio_track_cblk_t  *mCblk;         // control block for the single fast client, or NULL
+
+    // Extends FastThreadState::Command
+    static const Command
+        // The following commands also process configuration changes, and can be "or"ed:
+        READ = 0x8,             // read from input source
+        WRITE = 0x10,           // write to pipe sink
+        READ_WRITE = 0x18;      // read from input source and write to pipe sink
+
+};  // struct FastCaptureState
+
+}   // namespace android
+
+#endif  // ANDROID_AUDIO_FAST_CAPTURE_STATE_H