post_proc: Support effects in DSP for tunnel mode playback
Add interface to support configuring equlaizer, bass boost,
virtualizer and reverb effects in DSP for tunnel mode of
playback.
Change-Id: I9a93ad6136c4de06df5136967908b4e888dae44f
diff --git a/post_proc/equalizer.h b/post_proc/equalizer.h
new file mode 100644
index 0000000..19af186
--- /dev/null
+++ b/post_proc/equalizer.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Not a Contribution.
+ *
+ * Copyright (C) 2013 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 OFFLOAD_EQUALIZER_H_
+#define OFFLOAD_EQUALIZER_H_
+
+#include "bundle.h"
+
+#define NUM_EQ_BANDS 5
+#define INVALID_PRESET -2
+#define PRESET_CUSTOM -1
+
+extern const effect_descriptor_t equalizer_descriptor;
+
+typedef struct equalizer_context_s {
+ effect_context_t common;
+
+ int preset;
+ int band_levels[NUM_EQ_BANDS];
+
+ // Offload vars
+ struct mixer_ctl *ctl;
+ uint32_t device;
+ struct eq_params offload_eq;
+} equalizer_context_t;
+
+int equalizer_get_parameter(effect_context_t *context, effect_param_t *p,
+ uint32_t *size);
+
+int equalizer_set_parameter(effect_context_t *context, effect_param_t *p,
+ uint32_t size);
+
+int equalizer_set_device(effect_context_t *context, uint32_t device);
+
+int equalizer_reset(effect_context_t *context);
+
+int equalizer_init(effect_context_t *context);
+
+int equalizer_enable(effect_context_t *context);
+
+int equalizer_disable(effect_context_t *context);
+
+int equalizer_start(effect_context_t *context, output_context_t *output);
+
+int equalizer_stop(effect_context_t *context, output_context_t *output);
+
+#endif /*OFFLOAD_EQUALIZER_H_*/