diff --git a/services/audioflinger/AudioMixer.cpp b/services/audioflinger/AudioMixer.cpp
index dddca02..cb90ece 100644
--- a/services/audioflinger/AudioMixer.cpp
+++ b/services/audioflinger/AudioMixer.cpp
@@ -38,9 +38,7 @@
 #include <audio_utils/format.h>
 #include <common_time/local_clock.h>
 #include <common_time/cc_helper.h>
-
-#include <media/EffectsFactoryApi.h>
-#include <audio_effects/effect_downmix.h>
+#include <media/AudioResamplerPublic.h>
 
 #include "AudioMixerOps.h"
 #include "AudioMixer.h"
@@ -91,323 +89,6 @@
     return a < b ? a : b;
 }
 
-AudioMixer::CopyBufferProvider::CopyBufferProvider(size_t inputFrameSize,
-        size_t outputFrameSize, size_t bufferFrameCount) :
-        mInputFrameSize(inputFrameSize),
-        mOutputFrameSize(outputFrameSize),
-        mLocalBufferFrameCount(bufferFrameCount),
-        mLocalBufferData(NULL),
-        mConsumed(0)
-{
-    ALOGV("CopyBufferProvider(%p)(%zu, %zu, %zu)", this,
-            inputFrameSize, outputFrameSize, bufferFrameCount);
-    LOG_ALWAYS_FATAL_IF(inputFrameSize < outputFrameSize && bufferFrameCount == 0,
-            "Requires local buffer if inputFrameSize(%zu) < outputFrameSize(%zu)",
-            inputFrameSize, outputFrameSize);
-    if (mLocalBufferFrameCount) {
-        (void)posix_memalign(&mLocalBufferData, 32, mLocalBufferFrameCount * mOutputFrameSize);
-    }
-    mBuffer.frameCount = 0;
-}
-
-AudioMixer::CopyBufferProvider::~CopyBufferProvider()
-{
-    ALOGV("~CopyBufferProvider(%p)", this);
-    if (mBuffer.frameCount != 0) {
-        mTrackBufferProvider->releaseBuffer(&mBuffer);
-    }
-    free(mLocalBufferData);
-}
-
-status_t AudioMixer::CopyBufferProvider::getNextBuffer(AudioBufferProvider::Buffer *pBuffer,
-        int64_t pts)
-{
-    //ALOGV("CopyBufferProvider(%p)::getNextBuffer(%p (%zu), %lld)",
-    //        this, pBuffer, pBuffer->frameCount, pts);
-    if (mLocalBufferFrameCount == 0) {
-        status_t res = mTrackBufferProvider->getNextBuffer(pBuffer, pts);
-        if (res == OK) {
-            copyFrames(pBuffer->raw, pBuffer->raw, pBuffer->frameCount);
-        }
-        return res;
-    }
-    if (mBuffer.frameCount == 0) {
-        mBuffer.frameCount = pBuffer->frameCount;
-        status_t res = mTrackBufferProvider->getNextBuffer(&mBuffer, pts);
-        // At one time an upstream buffer provider had
-        // res == OK and mBuffer.frameCount == 0, doesn't seem to happen now 7/18/2014.
-        //
-        // By API spec, if res != OK, then mBuffer.frameCount == 0.
-        // but there may be improper implementations.
-        ALOG_ASSERT(res == OK || mBuffer.frameCount == 0);
-        if (res != OK || mBuffer.frameCount == 0) { // not needed by API spec, but to be safe.
-            pBuffer->raw = NULL;
-            pBuffer->frameCount = 0;
-            return res;
-        }
-        mConsumed = 0;
-    }
-    ALOG_ASSERT(mConsumed < mBuffer.frameCount);
-    size_t count = min(mLocalBufferFrameCount, mBuffer.frameCount - mConsumed);
-    count = min(count, pBuffer->frameCount);
-    pBuffer->raw = mLocalBufferData;
-    pBuffer->frameCount = count;
-    copyFrames(pBuffer->raw, (uint8_t*)mBuffer.raw + mConsumed * mInputFrameSize,
-            pBuffer->frameCount);
-    return OK;
-}
-
-void AudioMixer::CopyBufferProvider::releaseBuffer(AudioBufferProvider::Buffer *pBuffer)
-{
-    //ALOGV("CopyBufferProvider(%p)::releaseBuffer(%p(%zu))",
-    //        this, pBuffer, pBuffer->frameCount);
-    if (mLocalBufferFrameCount == 0) {
-        mTrackBufferProvider->releaseBuffer(pBuffer);
-        return;
-    }
-    // LOG_ALWAYS_FATAL_IF(pBuffer->frameCount == 0, "Invalid framecount");
-    mConsumed += pBuffer->frameCount; // TODO: update for efficiency to reuse existing content
-    if (mConsumed != 0 && mConsumed >= mBuffer.frameCount) {
-        mTrackBufferProvider->releaseBuffer(&mBuffer);
-        ALOG_ASSERT(mBuffer.frameCount == 0);
-    }
-    pBuffer->raw = NULL;
-    pBuffer->frameCount = 0;
-}
-
-void AudioMixer::CopyBufferProvider::reset()
-{
-    if (mBuffer.frameCount != 0) {
-        mTrackBufferProvider->releaseBuffer(&mBuffer);
-    }
-    mConsumed = 0;
-}
-
-AudioMixer::DownmixerBufferProvider::DownmixerBufferProvider(
-        audio_channel_mask_t inputChannelMask,
-        audio_channel_mask_t outputChannelMask, audio_format_t format,
-        uint32_t sampleRate, int32_t sessionId, size_t bufferFrameCount) :
-        CopyBufferProvider(
-            audio_bytes_per_sample(format) * audio_channel_count_from_out_mask(inputChannelMask),
-            audio_bytes_per_sample(format) * audio_channel_count_from_out_mask(outputChannelMask),
-            bufferFrameCount)  // set bufferFrameCount to 0 to do in-place
-{
-    ALOGV("DownmixerBufferProvider(%p)(%#x, %#x, %#x %u %d)",
-            this, inputChannelMask, outputChannelMask, format,
-            sampleRate, sessionId);
-    if (!sIsMultichannelCapable
-            || EffectCreate(&sDwnmFxDesc.uuid,
-                    sessionId,
-                    SESSION_ID_INVALID_AND_IGNORED,
-                    &mDownmixHandle) != 0) {
-         ALOGE("DownmixerBufferProvider() error creating downmixer effect");
-         mDownmixHandle = NULL;
-         return;
-     }
-     // channel input configuration will be overridden per-track
-     mDownmixConfig.inputCfg.channels = inputChannelMask;   // FIXME: Should be bits
-     mDownmixConfig.outputCfg.channels = outputChannelMask; // FIXME: should be bits
-     mDownmixConfig.inputCfg.format = format;
-     mDownmixConfig.outputCfg.format = format;
-     mDownmixConfig.inputCfg.samplingRate = sampleRate;
-     mDownmixConfig.outputCfg.samplingRate = sampleRate;
-     mDownmixConfig.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;
-     mDownmixConfig.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE;
-     // input and output buffer provider, and frame count will not be used as the downmix effect
-     // process() function is called directly (see DownmixerBufferProvider::getNextBuffer())
-     mDownmixConfig.inputCfg.mask = EFFECT_CONFIG_SMP_RATE | EFFECT_CONFIG_CHANNELS |
-             EFFECT_CONFIG_FORMAT | EFFECT_CONFIG_ACC_MODE;
-     mDownmixConfig.outputCfg.mask = mDownmixConfig.inputCfg.mask;
-
-     int cmdStatus;
-     uint32_t replySize = sizeof(int);
-
-     // Configure downmixer
-     status_t status = (*mDownmixHandle)->command(mDownmixHandle,
-             EFFECT_CMD_SET_CONFIG /*cmdCode*/, sizeof(effect_config_t) /*cmdSize*/,
-             &mDownmixConfig /*pCmdData*/,
-             &replySize, &cmdStatus /*pReplyData*/);
-     if (status != 0 || cmdStatus != 0) {
-         ALOGE("DownmixerBufferProvider() error %d cmdStatus %d while configuring downmixer",
-                 status, cmdStatus);
-         EffectRelease(mDownmixHandle);
-         mDownmixHandle = NULL;
-         return;
-     }
-
-     // Enable downmixer
-     replySize = sizeof(int);
-     status = (*mDownmixHandle)->command(mDownmixHandle,
-             EFFECT_CMD_ENABLE /*cmdCode*/, 0 /*cmdSize*/, NULL /*pCmdData*/,
-             &replySize, &cmdStatus /*pReplyData*/);
-     if (status != 0 || cmdStatus != 0) {
-         ALOGE("DownmixerBufferProvider() error %d cmdStatus %d while enabling downmixer",
-                 status, cmdStatus);
-         EffectRelease(mDownmixHandle);
-         mDownmixHandle = NULL;
-         return;
-     }
-
-     // Set downmix type
-     // parameter size rounded for padding on 32bit boundary
-     const int psizePadded = ((sizeof(downmix_params_t) - 1)/sizeof(int) + 1) * sizeof(int);
-     const int downmixParamSize =
-             sizeof(effect_param_t) + psizePadded + sizeof(downmix_type_t);
-     effect_param_t * const param = (effect_param_t *) malloc(downmixParamSize);
-     param->psize = sizeof(downmix_params_t);
-     const downmix_params_t downmixParam = DOWNMIX_PARAM_TYPE;
-     memcpy(param->data, &downmixParam, param->psize);
-     const downmix_type_t downmixType = DOWNMIX_TYPE_FOLD;
-     param->vsize = sizeof(downmix_type_t);
-     memcpy(param->data + psizePadded, &downmixType, param->vsize);
-     replySize = sizeof(int);
-     status = (*mDownmixHandle)->command(mDownmixHandle,
-             EFFECT_CMD_SET_PARAM /* cmdCode */, downmixParamSize /* cmdSize */,
-             param /*pCmdData*/, &replySize, &cmdStatus /*pReplyData*/);
-     free(param);
-     if (status != 0 || cmdStatus != 0) {
-         ALOGE("DownmixerBufferProvider() error %d cmdStatus %d while setting downmix type",
-                 status, cmdStatus);
-         EffectRelease(mDownmixHandle);
-         mDownmixHandle = NULL;
-         return;
-     }
-     ALOGV("DownmixerBufferProvider() downmix type set to %d", (int) downmixType);
-}
-
-AudioMixer::DownmixerBufferProvider::~DownmixerBufferProvider()
-{
-    ALOGV("~DownmixerBufferProvider (%p)", this);
-    EffectRelease(mDownmixHandle);
-    mDownmixHandle = NULL;
-}
-
-void AudioMixer::DownmixerBufferProvider::copyFrames(void *dst, const void *src, size_t frames)
-{
-    mDownmixConfig.inputCfg.buffer.frameCount = frames;
-    mDownmixConfig.inputCfg.buffer.raw = const_cast<void *>(src);
-    mDownmixConfig.outputCfg.buffer.frameCount = frames;
-    mDownmixConfig.outputCfg.buffer.raw = dst;
-    // may be in-place if src == dst.
-    status_t res = (*mDownmixHandle)->process(mDownmixHandle,
-            &mDownmixConfig.inputCfg.buffer, &mDownmixConfig.outputCfg.buffer);
-    ALOGE_IF(res != OK, "DownmixBufferProvider error %d", res);
-}
-
-/* call once in a pthread_once handler. */
-/*static*/ status_t AudioMixer::DownmixerBufferProvider::init()
-{
-    // find multichannel downmix effect if we have to play multichannel content
-    uint32_t numEffects = 0;
-    int ret = EffectQueryNumberEffects(&numEffects);
-    if (ret != 0) {
-        ALOGE("AudioMixer() error %d querying number of effects", ret);
-        return NO_INIT;
-    }
-    ALOGV("EffectQueryNumberEffects() numEffects=%d", numEffects);
-
-    for (uint32_t i = 0 ; i < numEffects ; i++) {
-        if (EffectQueryEffect(i, &sDwnmFxDesc) == 0) {
-            ALOGV("effect %d is called %s", i, sDwnmFxDesc.name);
-            if (memcmp(&sDwnmFxDesc.type, EFFECT_UIID_DOWNMIX, sizeof(effect_uuid_t)) == 0) {
-                ALOGI("found effect \"%s\" from %s",
-                        sDwnmFxDesc.name, sDwnmFxDesc.implementor);
-                sIsMultichannelCapable = true;
-                break;
-            }
-        }
-    }
-    ALOGW_IF(!sIsMultichannelCapable, "unable to find downmix effect");
-    return NO_INIT;
-}
-
-/*static*/ bool AudioMixer::DownmixerBufferProvider::sIsMultichannelCapable = false;
-/*static*/ effect_descriptor_t AudioMixer::DownmixerBufferProvider::sDwnmFxDesc;
-
-AudioMixer::RemixBufferProvider::RemixBufferProvider(audio_channel_mask_t inputChannelMask,
-        audio_channel_mask_t outputChannelMask, audio_format_t format,
-        size_t bufferFrameCount) :
-        CopyBufferProvider(
-                audio_bytes_per_sample(format)
-                    * audio_channel_count_from_out_mask(inputChannelMask),
-                audio_bytes_per_sample(format)
-                    * audio_channel_count_from_out_mask(outputChannelMask),
-                bufferFrameCount),
-        mFormat(format),
-        mSampleSize(audio_bytes_per_sample(format)),
-        mInputChannels(audio_channel_count_from_out_mask(inputChannelMask)),
-        mOutputChannels(audio_channel_count_from_out_mask(outputChannelMask))
-{
-    ALOGV("RemixBufferProvider(%p)(%#x, %#x, %#x) %zu %zu",
-            this, format, inputChannelMask, outputChannelMask,
-            mInputChannels, mOutputChannels);
-
-    const audio_channel_representation_t inputRepresentation =
-            audio_channel_mask_get_representation(inputChannelMask);
-    const audio_channel_representation_t outputRepresentation =
-            audio_channel_mask_get_representation(outputChannelMask);
-    const uint32_t inputBits = audio_channel_mask_get_bits(inputChannelMask);
-    const uint32_t outputBits = audio_channel_mask_get_bits(outputChannelMask);
-
-    switch (inputRepresentation) {
-    case AUDIO_CHANNEL_REPRESENTATION_POSITION:
-        switch (outputRepresentation) {
-        case AUDIO_CHANNEL_REPRESENTATION_POSITION:
-            memcpy_by_index_array_initialization(mIdxAry, ARRAY_SIZE(mIdxAry),
-                    outputBits, inputBits);
-            return;
-        case AUDIO_CHANNEL_REPRESENTATION_INDEX:
-            // TODO: output channel index mask not currently allowed
-            // fall through
-        default:
-            break;
-        }
-        break;
-    case AUDIO_CHANNEL_REPRESENTATION_INDEX:
-        switch (outputRepresentation) {
-        case AUDIO_CHANNEL_REPRESENTATION_POSITION:
-            memcpy_by_index_array_initialization_src_index(mIdxAry, ARRAY_SIZE(mIdxAry),
-                    outputBits, inputBits);
-            return;
-        case AUDIO_CHANNEL_REPRESENTATION_INDEX:
-            // TODO: output channel index mask not currently allowed
-            // fall through
-        default:
-            break;
-        }
-        break;
-    default:
-        break;
-    }
-    LOG_ALWAYS_FATAL("invalid channel mask conversion from %#x to %#x",
-            inputChannelMask, outputChannelMask);
-}
-
-void AudioMixer::RemixBufferProvider::copyFrames(void *dst, const void *src, size_t frames)
-{
-    memcpy_by_index_array(dst, mOutputChannels,
-            src, mInputChannels, mIdxAry, mSampleSize, frames);
-}
-
-AudioMixer::ReformatBufferProvider::ReformatBufferProvider(int32_t channels,
-        audio_format_t inputFormat, audio_format_t outputFormat,
-        size_t bufferFrameCount) :
-        CopyBufferProvider(
-            channels * audio_bytes_per_sample(inputFormat),
-            channels * audio_bytes_per_sample(outputFormat),
-            bufferFrameCount),
-        mChannels(channels),
-        mInputFormat(inputFormat),
-        mOutputFormat(outputFormat)
-{
-    ALOGV("ReformatBufferProvider(%p)(%d, %#x, %#x)", this, channels, inputFormat, outputFormat);
-}
-
-void AudioMixer::ReformatBufferProvider::copyFrames(void *dst, const void *src, size_t frames)
-{
-    memcpy_by_audio_format(dst, mOutputFormat, src, mInputFormat, frames * mChannels);
-}
-
 // ----------------------------------------------------------------------------
 
 // Ensure mConfiguredNames bitmask is initialized properly on all architectures.