audio: Audio resampler support for 192Khz playback

Add support for QTI audio resampler

audio: Audio resampler support for 192Khz playback
Change-Id: Ia8f24a0874ebf6e16ef7bd1f2759a14f47149875

audio: Add audio mixing support for qti resampler
Change-Id: Ib657aa12b2a72323564148c302ff8891e1bb7433

AudioMixer: Extend use of QTI resampler for 44.1Khz sampling rate
Change-Id: I2a819dbc9f1e3e280cb4fa79328e331883a3e981

AudioMixer: fill 0s at right place when no more buffers available
Change-Id: I50504c5a02eb0c69abfc9b047792b0f6f85b9ce8

audioflinger: add channel count check to use QTI resampler
Change-Id: I8f76dd82b72a0dd8b77343e77e0d0545e1be2114

Change-Id: Ia8f24a0874ebf6e16ef7bd1f2759a14f47149875

1 files changed, 52 insertions, 0 deletions

diff --git a/services/audioflinger/AudioResamplerQTI.h b/services/audioflinger/AudioResamplerQTI.h
new file mode 100644
index 0000000..0b30a9f
--- /dev/null
+++ b/services/audioflinger/AudioResamplerQTI.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014, The Linux Foundation. All rights reserved.
+ * Not a Contribution.
+ * 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.
+ */
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <cutils/log.h>
+
+#include "AudioResampler.h"
+
+namespace android {
+// ----------------------------------------------------------------------------
+
+class AudioResamplerQTI : public AudioResampler {
+public:
+    AudioResamplerQTI(int format, int inChannelCount, int32_t sampleRate);
+    ~AudioResamplerQTI();
+    size_t resample(int32_t* out, size_t outFrameCount,
+                  AudioBufferProvider* provider);
+    void setSampleRate(int32_t inSampleRate);
+    size_t getNumInSample(size_t outFrameCount);
+
+    int16_t *mState;
+    int16_t *mTmpBuf;
+    int32_t *mResamplerOutBuf;
+    size_t mFrameIndex;
+    size_t stateSize;
+    size_t mOutFrameCount;
+
+    static const int kNumTmpBufSize = 1024;
+
+    void init();
+    void reset();
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+