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-rw-r--r--libs/audioflinger/AudioResamplerCubic.h68
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diff --git a/libs/audioflinger/AudioResamplerCubic.h b/libs/audioflinger/AudioResamplerCubic.h
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--- a/libs/audioflinger/AudioResamplerCubic.h
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@@ -1,68 +0,0 @@
-/*
- * 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_RESAMPLER_CUBIC_H
-#define ANDROID_AUDIO_RESAMPLER_CUBIC_H
-
-#include <stdint.h>
-#include <sys/types.h>
-#include <cutils/log.h>
-
-#include "AudioResampler.h"
-
-namespace android {
-// ----------------------------------------------------------------------------
-
-class AudioResamplerCubic : public AudioResampler {
-public:
- AudioResamplerCubic(int bitDepth, int inChannelCount, int32_t sampleRate) :
- AudioResampler(bitDepth, inChannelCount, sampleRate) {
- }
- virtual void resample(int32_t* out, size_t outFrameCount,
- AudioBufferProvider* provider);
-private:
- // number of bits used in interpolation multiply - 14 bits avoids overflow
- static const int kNumInterpBits = 14;
-
- // bits to shift the phase fraction down to avoid overflow
- static const int kPreInterpShift = kNumPhaseBits - kNumInterpBits;
- typedef struct {
- int32_t a, b, c, y0, y1, y2, y3;
- } state;
- void init();
- void resampleMono16(int32_t* out, size_t outFrameCount,
- AudioBufferProvider* provider);
- void resampleStereo16(int32_t* out, size_t outFrameCount,
- AudioBufferProvider* provider);
- static inline int32_t interp(state* p, int32_t x) {
- return (((((p->a * x >> 14) + p->b) * x >> 14) + p->c) * x >> 14) + p->y1;
- }
- static inline void advance(state* p, int16_t in) {
- p->y0 = p->y1;
- p->y1 = p->y2;
- p->y2 = p->y3;
- p->y3 = in;
- p->a = (3 * (p->y1 - p->y2) - p->y0 + p->y3) >> 1;
- p->b = (p->y2 << 1) + p->y0 - (((5 * p->y1 + p->y3)) >> 1);
- p->c = (p->y2 - p->y0) >> 1;
- }
- state left, right;
-};
-
-// ----------------------------------------------------------------------------
-}; // namespace android
-
-#endif /*ANDROID_AUDIO_RESAMPLER_CUBIC_H*/