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diff --git a/include/media/EffectVisualizerApi.h b/include/media/EffectVisualizerApi.h
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+/*
+ * Copyright (C) 2010 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_EFFECTVISUALIZERAPI_H_
+#define ANDROID_EFFECTVISUALIZERAPI_H_
+
+#include <media/EffectApi.h>
+
+#if __cplusplus
+extern "C" {
+#endif
+
+//TODO replace by openSL ES include when available
+static const effect_uuid_t SL_IID_VISUALIZATION_ =
+ { 0xe46b26a0, 0xdddd, 0x11db, 0x8afd, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } };
+const effect_uuid_t * const SL_IID_VISUALIZATION = &SL_IID_VISUALIZATION_;
+
+#define VISUALIZER_CAPTURE_SIZE_MAX 1024 // maximum capture size in samples
+#define VISUALIZER_CAPTURE_SIZE_MIN 128 // minimum capture size in samples
+
+/* enumerated parameters for Visualizer effect */
+typedef enum
+{
+ VISU_PARAM_CAPTURE_SIZE, // Sets the number PCM samples in the capture.
+} t_visualizer_params;
+
+/* commands */
+typedef enum
+{
+ VISU_CMD_CAPTURE = EFFECT_CMD_FIRST_PROPRIETARY, // Gets the latest PCM capture.
+}t_visualizer_cmds;
+
+// VISU_CMD_CAPTURE retrieves the latest PCM snapshot captured by the visualizer engine.
+// It returns the number of samples specified by VISU_PARAM_CAPTURE_SIZE
+// in 8 bit unsigned format (0 = 0x80)
+
+#if __cplusplus
+} // extern "C"
+#endif
+
+
+#endif /*ANDROID_EFFECTVISUALIZERAPI_H_*/