1 files changed, 64 insertions, 0 deletions
diff --git a/include/private/media/AudioTrackShared.h b/include/private/media/AudioTrackShared.h
new file mode 100644
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--- /dev/null
+++ b/include/private/media/AudioTrackShared.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2007 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_TRACK_SHARED_H
+#define ANDROID_AUDIO_TRACK_SHARED_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/threads.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+#define MAX_SAMPLE_RATE     65535
+#define THREAD_PRIORITY_AUDIO_CLIENT (ANDROID_PRIORITY_AUDIO)
+
+struct audio_track_cblk_t
+{
+    enum {
+        SEQUENCE_MASK   = 0xFFFFFF00,
+        BUFFER_MASK     = 0x000000FF
+    };
+
+                Mutex       lock;
+                Condition   cv;
+    volatile    uint32_t    user;
+    volatile    uint32_t    server;
+    volatile    union {
+                    uint16_t    volume[2];
+                    uint32_t    volumeLR;
+                };
+                uint16_t    sampleRate;
+                uint16_t    reserved;
+
+                void*       buffers;
+                size_t      size;
+            
+                            audio_track_cblk_t();
+                uint32_t    stepUser(int bufferCount);
+                bool        stepServer(int bufferCount);
+                void*       buffer(int id) const;
+};
+
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_AUDIO_TRACK_SHARED_H