post_proc: Add support for non-tunnel DSP audio effects
Add hw accelerator module to send PCM data to DSP and get
back the effects processed data.
Expose a wrapper library for AudioFlinger to be able use the new
module to apply the DSP audio effects.
Change-Id: I6ee30c11f04a97b35f12201fb61b8cd901921e68
Signed-off-by: Alexy Joseph <alexyj@codeaurora.org>
diff --git a/post_proc/EffectsHwAcc.h b/post_proc/EffectsHwAcc.h
new file mode 100644
index 0000000..919332b
--- /dev/null
+++ b/post_proc/EffectsHwAcc.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ANDROID_EFFECTS_HW_ACC_H
+#define ANDROID_EFFECTS_HW_ACC_H
+
+#include <media/AudioBufferProvider.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+class EffectsHwAcc {
+public:
+ EffectsHwAcc(uint32_t sampleRate);
+ virtual ~EffectsHwAcc();
+
+ virtual void setSampleRate(uint32_t inpSR, uint32_t outSR);
+ virtual void unprepareEffects(AudioBufferProvider **trackBufferProvider);
+ virtual status_t prepareEffects(AudioBufferProvider **trackBufferProvider,
+ int sessionId, audio_channel_mask_t channelMask,
+ int frameCount);
+ virtual void setBufferProvider(AudioBufferProvider **bufferProvider,
+ AudioBufferProvider **trackBufferProvider);
+ /* AudioBufferProvider that wraps a track AudioBufferProvider by a call to
+ h/w accelerated effect */
+ class EffectsBufferProvider : public AudioBufferProvider {
+ public:
+ EffectsBufferProvider();
+ virtual ~EffectsBufferProvider();
+
+ virtual status_t getNextBuffer(Buffer* buffer, int64_t pts);
+ virtual void releaseBuffer(Buffer* buffer);
+
+ AudioBufferProvider* mTrackBufferProvider;
+ effect_handle_t mEffectsHandle;
+ effect_config_t mEffectsConfig;
+
+ void *mInputBuffer;
+ void *mOutputBuffer;
+ uint32_t mInputBufferFrameCountOffset;
+ };
+
+ bool mEnabled;
+ int32_t mFd;
+
+ EffectsBufferProvider* mBufferProvider;
+
+private:
+ uint32_t mInputSampleRate;
+ uint32_t mOutputSampleRate;
+};
+
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_EFFECTS_HW_ACC_H