Add m-esr52 at 52.6.0

1 files changed, 504 insertions, 0 deletions

diff --git a/media/libsoundtouch/src/SoundTouch.cpp b/media/libsoundtouch/src/SoundTouch.cpp
new file mode 100644
index 000000000..a9d23fc3c
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+++ b/media/libsoundtouch/src/SoundTouch.cpp
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+//////////////////////////////////////////////////////////////////////////////
+///
+/// SoundTouch - main class for tempo/pitch/rate adjusting routines. 
+///
+/// Notes:
+/// - Initialize the SoundTouch object instance by setting up the sound stream 
+///   parameters with functions 'setSampleRate' and 'setChannels', then set 
+///   desired tempo/pitch/rate settings with the corresponding functions.
+///
+/// - The SoundTouch class behaves like a first-in-first-out pipeline: The 
+///   samples that are to be processed are fed into one of the pipe by calling
+///   function 'putSamples', while the ready processed samples can be read 
+///   from the other end of the pipeline with function 'receiveSamples'.
+/// 
+/// - The SoundTouch processing classes require certain sized 'batches' of 
+///   samples in order to process the sound. For this reason the classes buffer 
+///   incoming samples until there are enough of samples available for 
+///   processing, then they carry out the processing step and consequently
+///   make the processed samples available for outputting.
+/// 
+/// - For the above reason, the processing routines introduce a certain 
+///   'latency' between the input and output, so that the samples input to
+///   SoundTouch may not be immediately available in the output, and neither 
+///   the amount of outputtable samples may not immediately be in direct 
+///   relationship with the amount of previously input samples.
+///
+/// - The tempo/pitch/rate control parameters can be altered during processing.
+///   Please notice though that they aren't currently protected by semaphores,
+///   so in multi-thread application external semaphore protection may be
+///   required.
+///
+/// - This class utilizes classes 'TDStretch' for tempo change (without modifying
+///   pitch) and 'RateTransposer' for changing the playback rate (that is, both 
+///   tempo and pitch in the same ratio) of the sound. The third available control 
+///   'pitch' (change pitch but maintain tempo) is produced by a combination of
+///   combining the two other controls.
+///
+/// Author        : Copyright (c) Olli Parviainen
+/// Author e-mail : oparviai 'at' iki.fi
+/// SoundTouch WWW: http://www.surina.net/soundtouch
+///
+////////////////////////////////////////////////////////////////////////////////
+//
+// Last changed  : $Date: 2014-10-08 15:26:57 +0000 (Wed, 08 Oct 2014) $
+// File revision : $Revision: 4 $
+//
+// $Id: SoundTouch.cpp 201 2014-10-08 15:26:57Z oparviai $
+//
+////////////////////////////////////////////////////////////////////////////////
+//
+// License :
+//
+//  SoundTouch audio processing library
+//  Copyright (c) Olli Parviainen
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <assert.h>
+#include <stdlib.h>
+#include <memory.h>
+#include <math.h>
+#include <stdio.h>
+
+#include "SoundTouch.h"
+#include "TDStretch.h"
+#include "RateTransposer.h"
+#include "cpu_detect.h"
+
+using namespace soundtouch;
+    
+/// test if two floating point numbers are equal
+#define TEST_FLOAT_EQUAL(a, b)  (fabs(a - b) < 1e-10)
+
+
+/// Print library version string for autoconf
+extern "C" void soundtouch_ac_test()
+{
+    printf("SoundTouch Version: %s\n",SOUNDTOUCH_VERSION);
+} 
+
+
+SoundTouch::SoundTouch()
+{
+    // Initialize rate transposer and tempo changer instances
+
+    pRateTransposer = new RateTransposer();
+    pTDStretch = TDStretch::newInstance();
+
+    setOutPipe(pTDStretch);
+
+    rate = tempo = 0;
+
+    virtualPitch = 
+    virtualRate = 
+    virtualTempo = 1.0;
+
+    calcEffectiveRateAndTempo();
+
+    channels = 0;
+    bSrateSet = false;
+}
+
+
+
+SoundTouch::~SoundTouch()
+{
+    delete pRateTransposer;
+    delete pTDStretch;
+}
+
+
+
+/// Get SoundTouch library version string
+const char *SoundTouch::getVersionString()
+{
+    static const char *_version = SOUNDTOUCH_VERSION;
+
+    return _version;
+}
+
+
+/// Get SoundTouch library version Id
+uint SoundTouch::getVersionId()
+{
+    return SOUNDTOUCH_VERSION_ID;
+}
+
+
+// Sets the number of channels, 1 = mono, 2 = stereo
+void SoundTouch::setChannels(uint numChannels)
+{
+    /*if (numChannels != 1 && numChannels != 2) 
+    {
+        //ST_THROW_RT_ERROR("Illegal number of channels");
+		return;
+    }*/
+    channels = numChannels;
+    pRateTransposer->setChannels((int)numChannels);
+    pTDStretch->setChannels((int)numChannels);
+}
+
+
+
+// Sets new rate control value. Normal rate = 1.0, smaller values
+// represent slower rate, larger faster rates.
+void SoundTouch::setRate(float newRate)
+{
+    virtualRate = newRate;
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets new rate control value as a difference in percents compared
+// to the original rate (-50 .. +100 %)
+void SoundTouch::setRateChange(float newRate)
+{
+    virtualRate = 1.0f + 0.01f * newRate;
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets new tempo control value. Normal tempo = 1.0, smaller values
+// represent slower tempo, larger faster tempo.
+void SoundTouch::setTempo(float newTempo)
+{
+    virtualTempo = newTempo;
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets new tempo control value as a difference in percents compared
+// to the original tempo (-50 .. +100 %)
+void SoundTouch::setTempoChange(float newTempo)
+{
+    virtualTempo = 1.0f + 0.01f * newTempo;
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets new pitch control value. Original pitch = 1.0, smaller values
+// represent lower pitches, larger values higher pitch.
+void SoundTouch::setPitch(float newPitch)
+{
+    virtualPitch = newPitch;
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets pitch change in octaves compared to the original pitch
+// (-1.00 .. +1.00)
+void SoundTouch::setPitchOctaves(float newPitch)
+{
+    virtualPitch = (float)exp(0.69314718056f * newPitch);
+    calcEffectiveRateAndTempo();
+}
+
+
+
+// Sets pitch change in semi-tones compared to the original pitch
+// (-12 .. +12)
+void SoundTouch::setPitchSemiTones(int newPitch)
+{
+    setPitchOctaves((float)newPitch / 12.0f);
+}
+
+
+
+void SoundTouch::setPitchSemiTones(float newPitch)
+{
+    setPitchOctaves(newPitch / 12.0f);
+}
+
+
+// Calculates 'effective' rate and tempo values from the
+// nominal control values.
+void SoundTouch::calcEffectiveRateAndTempo()
+{
+    float oldTempo = tempo;
+    float oldRate = rate;
+
+    tempo = virtualTempo / virtualPitch;
+    rate = virtualPitch * virtualRate;
+
+    if (!TEST_FLOAT_EQUAL(rate,oldRate)) pRateTransposer->setRate(rate);
+    if (!TEST_FLOAT_EQUAL(tempo, oldTempo)) pTDStretch->setTempo(tempo);
+
+#ifndef SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER
+    if (rate <= 1.0f) 
+    {
+        if (output != pTDStretch) 
+        {
+            FIFOSamplePipe *tempoOut;
+
+            assert(output == pRateTransposer);
+            // move samples in the current output buffer to the output of pTDStretch
+            tempoOut = pTDStretch->getOutput();
+            tempoOut->moveSamples(*output);
+            // move samples in pitch transposer's store buffer to tempo changer's input
+            // deprecated : pTDStretch->moveSamples(*pRateTransposer->getStore());
+
+            output = pTDStretch;
+        }
+    }
+    else
+#endif
+    {
+        if (output != pRateTransposer) 
+        {
+            FIFOSamplePipe *transOut;
+
+            assert(output == pTDStretch);
+            // move samples in the current output buffer to the output of pRateTransposer
+            transOut = pRateTransposer->getOutput();
+            transOut->moveSamples(*output);
+            // move samples in tempo changer's input to pitch transposer's input
+            pRateTransposer->moveSamples(*pTDStretch->getInput());
+
+            output = pRateTransposer;
+        }
+    } 
+}
+
+
+// Sets sample rate.
+void SoundTouch::setSampleRate(uint srate)
+{
+    bSrateSet = true;
+    // set sample rate, leave other tempo changer parameters as they are.
+    pTDStretch->setParameters((int)srate);
+}
+
+
+// Adds 'numSamples' pcs of samples from the 'samples' memory position into
+// the input of the object.
+void SoundTouch::putSamples(const SAMPLETYPE *samples, uint nSamples)
+{
+    if (bSrateSet == false) 
+    {
+        ST_THROW_RT_ERROR("SoundTouch : Sample rate not defined");
+    } 
+    else if (channels == 0) 
+    {
+        ST_THROW_RT_ERROR("SoundTouch : Number of channels not defined");
+    }
+
+    // Transpose the rate of the new samples if necessary
+    /* Bypass the nominal setting - can introduce a click in sound when tempo/pitch control crosses the nominal value...
+    if (rate == 1.0f) 
+    {
+        // The rate value is same as the original, simply evaluate the tempo changer. 
+        assert(output == pTDStretch);
+        if (pRateTransposer->isEmpty() == 0) 
+        {
+            // yet flush the last samples in the pitch transposer buffer
+            // (may happen if 'rate' changes from a non-zero value to zero)
+            pTDStretch->moveSamples(*pRateTransposer);
+        }
+        pTDStretch->putSamples(samples, nSamples);
+    } 
+    */
+#ifndef SOUNDTOUCH_PREVENT_CLICK_AT_RATE_CROSSOVER
+    else if (rate <= 1.0f) 
+    {
+        // transpose the rate down, output the transposed sound to tempo changer buffer
+        assert(output == pTDStretch);
+        pRateTransposer->putSamples(samples, nSamples);
+        pTDStretch->moveSamples(*pRateTransposer);
+    } 
+    else 
+#endif
+    {
+        // evaluate the tempo changer, then transpose the rate up, 
+        assert(output == pRateTransposer);
+        pTDStretch->putSamples(samples, nSamples);
+        pRateTransposer->moveSamples(*pTDStretch);
+    }
+}
+
+
+// Flushes the last samples from the processing pipeline to the output.
+// Clears also the internal processing buffers.
+//
+// Note: This function is meant for extracting the last samples of a sound
+// stream. This function may introduce additional blank samples in the end
+// of the sound stream, and thus it's not recommended to call this function
+// in the middle of a sound stream.
+void SoundTouch::flush()
+{
+    int i;
+    int nUnprocessed;
+    int nOut;
+    SAMPLETYPE *buff = new SAMPLETYPE[64 * channels];
+    
+    // check how many samples still await processing, and scale
+    // that by tempo & rate to get expected output sample count
+    nUnprocessed = numUnprocessedSamples();
+    nUnprocessed = (int)((double)nUnprocessed / (tempo * rate) + 0.5);
+
+    nOut = numSamples();        // ready samples currently in buffer ...
+    nOut += nUnprocessed;       // ... and how many we expect there to be in the end
+    
+    memset(buff, 0, 64 * channels * sizeof(SAMPLETYPE));
+    // "Push" the last active samples out from the processing pipeline by
+    // feeding blank samples into the processing pipeline until new, 
+    // processed samples appear in the output (not however, more than 
+    // 8ksamples in any case)
+    for (i = 0; i < 128; i ++) 
+    {
+        putSamples(buff, 64);
+        if ((int)numSamples() >= nOut) 
+        {
+            // Enough new samples have appeared into the output!
+            // As samples come from processing with bigger chunks, now truncate it
+            // back to maximum "nOut" samples to improve duration accuracy 
+            adjustAmountOfSamples(nOut);
+
+            // finish
+            break;  
+        }
+    }
+
+    delete[] buff;
+
+    // Clear working buffers
+    pRateTransposer->clear();
+    pTDStretch->clearInput();
+    // yet leave the 'tempoChanger' output intouched as that's where the
+    // flushed samples are!
+}
+
+
+// Changes a setting controlling the processing system behaviour. See the
+// 'SETTING_...' defines for available setting ID's.
+bool SoundTouch::setSetting(int settingId, int value)
+{
+    int sampleRate, sequenceMs, seekWindowMs, overlapMs;
+
+    // read current tdstretch routine parameters
+    pTDStretch->getParameters(&sampleRate, &sequenceMs, &seekWindowMs, &overlapMs);
+
+    switch (settingId) 
+    {
+        case SETTING_USE_AA_FILTER :
+            // enables / disabless anti-alias filter
+            pRateTransposer->enableAAFilter((value != 0) ? true : false);
+            return true;
+
+        case SETTING_AA_FILTER_LENGTH :
+            // sets anti-alias filter length
+            pRateTransposer->getAAFilter()->setLength(value);
+            return true;
+
+        case SETTING_USE_QUICKSEEK :
+            // enables / disables tempo routine quick seeking algorithm
+            pTDStretch->enableQuickSeek((value != 0) ? true : false);
+            return true;
+
+        case SETTING_SEQUENCE_MS:
+            // change time-stretch sequence duration parameter
+            pTDStretch->setParameters(sampleRate, value, seekWindowMs, overlapMs);
+            return true;
+
+        case SETTING_SEEKWINDOW_MS:
+            // change time-stretch seek window length parameter
+            pTDStretch->setParameters(sampleRate, sequenceMs, value, overlapMs);
+            return true;
+
+        case SETTING_OVERLAP_MS:
+            // change time-stretch overlap length parameter
+            pTDStretch->setParameters(sampleRate, sequenceMs, seekWindowMs, value);
+            return true;
+
+        default :
+            return false;
+    }
+}
+
+
+// Reads a setting controlling the processing system behaviour. See the
+// 'SETTING_...' defines for available setting ID's.
+//
+// Returns the setting value.
+int SoundTouch::getSetting(int settingId) const
+{
+    int temp;
+
+    switch (settingId) 
+    {
+        case SETTING_USE_AA_FILTER :
+            return (uint)pRateTransposer->isAAFilterEnabled();
+
+        case SETTING_AA_FILTER_LENGTH :
+            return pRateTransposer->getAAFilter()->getLength();
+
+        case SETTING_USE_QUICKSEEK :
+            return (uint)   pTDStretch->isQuickSeekEnabled();
+
+        case SETTING_SEQUENCE_MS:
+            pTDStretch->getParameters(NULL, &temp, NULL, NULL);
+            return temp;
+
+        case SETTING_SEEKWINDOW_MS:
+            pTDStretch->getParameters(NULL, NULL, &temp, NULL);
+            return temp;
+
+        case SETTING_OVERLAP_MS:
+            pTDStretch->getParameters(NULL, NULL, NULL, &temp);
+            return temp;
+
+		case SETTING_NOMINAL_INPUT_SEQUENCE :
+			return pTDStretch->getInputSampleReq();
+
+		case SETTING_NOMINAL_OUTPUT_SEQUENCE :
+			return pTDStretch->getOutputBatchSize();
+
+		default :
+            return 0;
+    }
+}
+
+
+// Clears all the samples in the object's output and internal processing
+// buffers.
+void SoundTouch::clear()
+{
+    pRateTransposer->clear();
+    pTDStretch->clear();
+}
+
+
+
+/// Returns number of samples currently unprocessed.
+uint SoundTouch::numUnprocessedSamples() const
+{
+    FIFOSamplePipe * psp;
+    if (pTDStretch)
+    {
+        psp = pTDStretch->getInput();
+        if (psp)
+        {
+            return psp->numSamples();
+        }
+    }
+    return 0;
+}