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-rw-r--r--services/audioflinger/audio-resampler/AudioResamplerCoefficients.cpp55
1 files changed, 55 insertions, 0 deletions
diff --git a/services/audioflinger/audio-resampler/AudioResamplerCoefficients.cpp b/services/audioflinger/audio-resampler/AudioResamplerCoefficients.cpp
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index 0000000..ade58a7
--- /dev/null
+++ b/services/audioflinger/audio-resampler/AudioResamplerCoefficients.cpp
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+/*
+ * Copyright (C) 2012 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.
+ */
+
+#include <dnsampler_filter_coefficients_x128_10112011.h>
+#include <resampler_filter_coefficients_10042011.h>
+#undef LOG_TAG
+#include <utils/Log.h>
+//#include "common_log.h"
+#define LOG_TAG "ResamplerCoefficients"
+#define LOG_NDEBUG 0
+
+const int32_t RESAMPLE_FIR_NUM_COEF = 16;
+const int32_t RESAMPLE_FIR_LERP_INT_BITS = 7;
+
+using namespace android;
+#ifdef __cplusplus
+extern "C" {
+#endif
+const int32_t* readResamplerCoefficients(bool upSample) {
+
+ ALOGV("readResamplerCoefficients");
+ if(upSample) {
+ return resampler_filter_coefficients_10042011;
+ }
+ else {
+ return dnsampler_filter_coefficients_x128_10112011;
+ }
+
+}
+
+int32_t readResampleFirNumCoeff() {
+
+ return RESAMPLE_FIR_NUM_COEF;
+}
+
+int32_t readResampleFirLerpIntBits() {
+
+ return RESAMPLE_FIR_LERP_INT_BITS;
+}
+#ifdef __cplusplus
+}
+#endif