git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
This commit is contained in:
826
deps/juce/modules/juce_audio_utils/gui/juce_AudioThumbnail.cpp
vendored
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826
deps/juce/modules/juce_audio_utils/gui/juce_AudioThumbnail.cpp
vendored
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@ -0,0 +1,826 @@
|
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/*
|
||||
==============================================================================
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||||
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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|
||||
JUCE is an open source library subject to commercial or open-source
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||||
licensing.
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||||
|
||||
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
|
||||
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
|
||||
|
||||
End User License Agreement: www.juce.com/juce-6-licence
|
||||
Privacy Policy: www.juce.com/juce-privacy-policy
|
||||
|
||||
Or: You may also use this code under the terms of the GPL v3 (see
|
||||
www.gnu.org/licenses).
|
||||
|
||||
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
||||
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
||||
DISCLAIMED.
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||||
==============================================================================
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*/
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namespace juce
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{
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struct AudioThumbnail::MinMaxValue
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||||
{
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MinMaxValue() noexcept
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||||
{
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values[0] = 0;
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||||
values[1] = 0;
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||||
}
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||||
|
||||
inline void set (const int8 newMin, const int8 newMax) noexcept
|
||||
{
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||||
values[0] = newMin;
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||||
values[1] = newMax;
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||||
}
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||||
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inline int8 getMinValue() const noexcept { return values[0]; }
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||||
inline int8 getMaxValue() const noexcept { return values[1]; }
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||||
|
||||
inline void setFloat (Range<float> newRange) noexcept
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{
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// Workaround for an ndk armeabi compiler bug which crashes on signed saturation
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||||
#if JUCE_ANDROID
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||||
Range<float> limitedRange (jlimit (-1.0f, 1.0f, newRange.getStart()),
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jlimit (-1.0f, 1.0f, newRange.getEnd()));
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values[0] = (int8) (limitedRange.getStart() * 127.0f);
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||||
values[1] = (int8) (limitedRange.getEnd() * 127.0f);
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#else
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values[0] = (int8) jlimit (-128, 127, roundToInt (newRange.getStart() * 127.0f));
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values[1] = (int8) jlimit (-128, 127, roundToInt (newRange.getEnd() * 127.0f));
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#endif
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||||
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||||
if (values[0] == values[1])
|
||||
{
|
||||
if (values[1] == 127)
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||||
values[0]--;
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||||
else
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||||
values[1]++;
|
||||
}
|
||||
}
|
||||
|
||||
inline bool isNonZero() const noexcept
|
||||
{
|
||||
return values[1] > values[0];
|
||||
}
|
||||
|
||||
inline int getPeak() const noexcept
|
||||
{
|
||||
return jmax (std::abs ((int) values[0]),
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||||
std::abs ((int) values[1]));
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||||
}
|
||||
|
||||
inline void read (InputStream& input) { input.read (values, 2); }
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||||
inline void write (OutputStream& output) { output.write (values, 2); }
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|
||||
private:
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||||
int8 values[2];
|
||||
};
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||||
|
||||
//==============================================================================
|
||||
class AudioThumbnail::LevelDataSource : public TimeSliceClient
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{
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||||
public:
|
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LevelDataSource (AudioThumbnail& thumb, AudioFormatReader* newReader, int64 hash)
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||||
: hashCode (hash), owner (thumb), reader (newReader)
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{
|
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}
|
||||
|
||||
LevelDataSource (AudioThumbnail& thumb, InputSource* src)
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||||
: hashCode (src->hashCode()), owner (thumb), source (src)
|
||||
{
|
||||
}
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||||
|
||||
~LevelDataSource() override
|
||||
{
|
||||
owner.cache.getTimeSliceThread().removeTimeSliceClient (this);
|
||||
}
|
||||
|
||||
enum { timeBeforeDeletingReader = 3000 };
|
||||
|
||||
void initialise (int64 samplesFinished)
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||||
{
|
||||
const ScopedLock sl (readerLock);
|
||||
|
||||
numSamplesFinished = samplesFinished;
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||||
|
||||
createReader();
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||||
|
||||
if (reader != nullptr)
|
||||
{
|
||||
lengthInSamples = reader->lengthInSamples;
|
||||
numChannels = reader->numChannels;
|
||||
sampleRate = reader->sampleRate;
|
||||
|
||||
if (lengthInSamples <= 0 || isFullyLoaded())
|
||||
reader.reset();
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||||
else
|
||||
owner.cache.getTimeSliceThread().addTimeSliceClient (this);
|
||||
}
|
||||
}
|
||||
|
||||
void getLevels (int64 startSample, int numSamples, Array<Range<float>>& levels)
|
||||
{
|
||||
const ScopedLock sl (readerLock);
|
||||
|
||||
if (reader == nullptr)
|
||||
{
|
||||
createReader();
|
||||
|
||||
if (reader != nullptr)
|
||||
{
|
||||
lastReaderUseTime = Time::getMillisecondCounter();
|
||||
owner.cache.getTimeSliceThread().addTimeSliceClient (this);
|
||||
}
|
||||
}
|
||||
|
||||
if (reader != nullptr)
|
||||
{
|
||||
if (levels.size() < (int) reader->numChannels)
|
||||
levels.insertMultiple (0, {}, (int) reader->numChannels - levels.size());
|
||||
|
||||
reader->readMaxLevels (startSample, numSamples, levels.getRawDataPointer(), (int) reader->numChannels);
|
||||
|
||||
lastReaderUseTime = Time::getMillisecondCounter();
|
||||
}
|
||||
}
|
||||
|
||||
void releaseResources()
|
||||
{
|
||||
const ScopedLock sl (readerLock);
|
||||
reader.reset();
|
||||
}
|
||||
|
||||
int useTimeSlice() override
|
||||
{
|
||||
if (isFullyLoaded())
|
||||
{
|
||||
if (reader != nullptr && source != nullptr)
|
||||
{
|
||||
if (Time::getMillisecondCounter() > lastReaderUseTime + timeBeforeDeletingReader)
|
||||
releaseResources();
|
||||
else
|
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return 200;
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
bool justFinished = false;
|
||||
|
||||
{
|
||||
const ScopedLock sl (readerLock);
|
||||
createReader();
|
||||
|
||||
if (reader != nullptr)
|
||||
{
|
||||
if (! readNextBlock())
|
||||
return 0;
|
||||
|
||||
justFinished = true;
|
||||
}
|
||||
}
|
||||
|
||||
if (justFinished)
|
||||
owner.cache.storeThumb (owner, hashCode);
|
||||
|
||||
return 200;
|
||||
}
|
||||
|
||||
bool isFullyLoaded() const noexcept
|
||||
{
|
||||
return numSamplesFinished >= lengthInSamples;
|
||||
}
|
||||
|
||||
inline int sampleToThumbSample (const int64 originalSample) const noexcept
|
||||
{
|
||||
return (int) (originalSample / owner.samplesPerThumbSample);
|
||||
}
|
||||
|
||||
int64 lengthInSamples = 0, numSamplesFinished = 0;
|
||||
double sampleRate = 0;
|
||||
unsigned int numChannels = 0;
|
||||
int64 hashCode = 0;
|
||||
|
||||
private:
|
||||
AudioThumbnail& owner;
|
||||
std::unique_ptr<InputSource> source;
|
||||
std::unique_ptr<AudioFormatReader> reader;
|
||||
CriticalSection readerLock;
|
||||
std::atomic<uint32> lastReaderUseTime { 0 };
|
||||
|
||||
void createReader()
|
||||
{
|
||||
if (reader == nullptr && source != nullptr)
|
||||
if (auto* audioFileStream = source->createInputStream())
|
||||
reader.reset (owner.formatManagerToUse.createReaderFor (std::unique_ptr<InputStream> (audioFileStream)));
|
||||
}
|
||||
|
||||
bool readNextBlock()
|
||||
{
|
||||
jassert (reader != nullptr);
|
||||
|
||||
if (! isFullyLoaded())
|
||||
{
|
||||
auto numToDo = (int) jmin (256 * (int64) owner.samplesPerThumbSample, lengthInSamples - numSamplesFinished);
|
||||
|
||||
if (numToDo > 0)
|
||||
{
|
||||
auto startSample = numSamplesFinished;
|
||||
|
||||
auto firstThumbIndex = sampleToThumbSample (startSample);
|
||||
auto lastThumbIndex = sampleToThumbSample (startSample + numToDo);
|
||||
auto numThumbSamps = lastThumbIndex - firstThumbIndex;
|
||||
|
||||
HeapBlock<MinMaxValue> levelData ((unsigned int) numThumbSamps * numChannels);
|
||||
HeapBlock<MinMaxValue*> levels (numChannels);
|
||||
|
||||
for (int i = 0; i < (int) numChannels; ++i)
|
||||
levels[i] = levelData + i * numThumbSamps;
|
||||
|
||||
HeapBlock<Range<float>> levelsRead (numChannels);
|
||||
|
||||
for (int i = 0; i < numThumbSamps; ++i)
|
||||
{
|
||||
reader->readMaxLevels ((firstThumbIndex + i) * owner.samplesPerThumbSample,
|
||||
owner.samplesPerThumbSample, levelsRead, (int) numChannels);
|
||||
|
||||
for (int j = 0; j < (int) numChannels; ++j)
|
||||
levels[j][i].setFloat (levelsRead[j]);
|
||||
}
|
||||
|
||||
{
|
||||
const ScopedUnlock su (readerLock);
|
||||
owner.setLevels (levels, firstThumbIndex, (int) numChannels, numThumbSamps);
|
||||
}
|
||||
|
||||
numSamplesFinished += numToDo;
|
||||
lastReaderUseTime = Time::getMillisecondCounter();
|
||||
}
|
||||
}
|
||||
|
||||
return isFullyLoaded();
|
||||
}
|
||||
};
|
||||
|
||||
//==============================================================================
|
||||
class AudioThumbnail::ThumbData
|
||||
{
|
||||
public:
|
||||
ThumbData (int numThumbSamples)
|
||||
{
|
||||
ensureSize (numThumbSamples);
|
||||
}
|
||||
|
||||
inline MinMaxValue* getData (int thumbSampleIndex) noexcept
|
||||
{
|
||||
jassert (thumbSampleIndex < data.size());
|
||||
return data.getRawDataPointer() + thumbSampleIndex;
|
||||
}
|
||||
|
||||
int getSize() const noexcept
|
||||
{
|
||||
return data.size();
|
||||
}
|
||||
|
||||
void getMinMax (int startSample, int endSample, MinMaxValue& result) const noexcept
|
||||
{
|
||||
if (startSample >= 0)
|
||||
{
|
||||
endSample = jmin (endSample, data.size() - 1);
|
||||
|
||||
int8 mx = -128;
|
||||
int8 mn = 127;
|
||||
|
||||
while (startSample <= endSample)
|
||||
{
|
||||
auto& v = data.getReference (startSample);
|
||||
|
||||
if (v.getMinValue() < mn) mn = v.getMinValue();
|
||||
if (v.getMaxValue() > mx) mx = v.getMaxValue();
|
||||
|
||||
++startSample;
|
||||
}
|
||||
|
||||
if (mn <= mx)
|
||||
{
|
||||
result.set (mn, mx);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
result.set (1, 0);
|
||||
}
|
||||
|
||||
void write (const MinMaxValue* values, int startIndex, int numValues)
|
||||
{
|
||||
resetPeak();
|
||||
|
||||
if (startIndex + numValues > data.size())
|
||||
ensureSize (startIndex + numValues);
|
||||
|
||||
auto* dest = getData (startIndex);
|
||||
|
||||
for (int i = 0; i < numValues; ++i)
|
||||
dest[i] = values[i];
|
||||
}
|
||||
|
||||
void resetPeak() noexcept
|
||||
{
|
||||
peakLevel = -1;
|
||||
}
|
||||
|
||||
int getPeak() noexcept
|
||||
{
|
||||
if (peakLevel < 0)
|
||||
{
|
||||
for (auto& s : data)
|
||||
{
|
||||
auto peak = s.getPeak();
|
||||
|
||||
if (peak > peakLevel)
|
||||
peakLevel = peak;
|
||||
}
|
||||
}
|
||||
|
||||
return peakLevel;
|
||||
}
|
||||
|
||||
private:
|
||||
Array<MinMaxValue> data;
|
||||
int peakLevel = -1;
|
||||
|
||||
void ensureSize (int thumbSamples)
|
||||
{
|
||||
auto extraNeeded = thumbSamples - data.size();
|
||||
|
||||
if (extraNeeded > 0)
|
||||
data.insertMultiple (-1, MinMaxValue(), extraNeeded);
|
||||
}
|
||||
};
|
||||
|
||||
//==============================================================================
|
||||
class AudioThumbnail::CachedWindow
|
||||
{
|
||||
public:
|
||||
CachedWindow() {}
|
||||
|
||||
void invalidate()
|
||||
{
|
||||
cacheNeedsRefilling = true;
|
||||
}
|
||||
|
||||
void drawChannel (Graphics& g, const Rectangle<int>& area,
|
||||
const double startTime, const double endTime,
|
||||
const int channelNum, const float verticalZoomFactor,
|
||||
const double rate, const int numChans, const int sampsPerThumbSample,
|
||||
LevelDataSource* levelData, const OwnedArray<ThumbData>& chans)
|
||||
{
|
||||
if (refillCache (area.getWidth(), startTime, endTime, rate,
|
||||
numChans, sampsPerThumbSample, levelData, chans)
|
||||
&& isPositiveAndBelow (channelNum, numChannelsCached))
|
||||
{
|
||||
auto clip = g.getClipBounds().getIntersection (area.withWidth (jmin (numSamplesCached, area.getWidth())));
|
||||
|
||||
if (! clip.isEmpty())
|
||||
{
|
||||
auto topY = (float) area.getY();
|
||||
auto bottomY = (float) area.getBottom();
|
||||
auto midY = (topY + bottomY) * 0.5f;
|
||||
auto vscale = verticalZoomFactor * (bottomY - topY) / 256.0f;
|
||||
|
||||
auto* cacheData = getData (channelNum, clip.getX() - area.getX());
|
||||
|
||||
RectangleList<float> waveform;
|
||||
waveform.ensureStorageAllocated (clip.getWidth());
|
||||
|
||||
auto x = (float) clip.getX();
|
||||
|
||||
for (int w = clip.getWidth(); --w >= 0;)
|
||||
{
|
||||
if (cacheData->isNonZero())
|
||||
{
|
||||
auto top = jmax (midY - cacheData->getMaxValue() * vscale - 0.3f, topY);
|
||||
auto bottom = jmin (midY - cacheData->getMinValue() * vscale + 0.3f, bottomY);
|
||||
|
||||
waveform.addWithoutMerging (Rectangle<float> (x, top, 1.0f, bottom - top));
|
||||
}
|
||||
|
||||
x += 1.0f;
|
||||
++cacheData;
|
||||
}
|
||||
|
||||
g.fillRectList (waveform);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
Array<MinMaxValue> data;
|
||||
double cachedStart = 0, cachedTimePerPixel = 0;
|
||||
int numChannelsCached = 0, numSamplesCached = 0;
|
||||
bool cacheNeedsRefilling = true;
|
||||
|
||||
bool refillCache (int numSamples, double startTime, double endTime,
|
||||
double rate, int numChans, int sampsPerThumbSample,
|
||||
LevelDataSource* levelData, const OwnedArray<ThumbData>& chans)
|
||||
{
|
||||
auto timePerPixel = (endTime - startTime) / numSamples;
|
||||
|
||||
if (numSamples <= 0 || timePerPixel <= 0.0 || rate <= 0)
|
||||
{
|
||||
invalidate();
|
||||
return false;
|
||||
}
|
||||
|
||||
if (numSamples == numSamplesCached
|
||||
&& numChannelsCached == numChans
|
||||
&& startTime == cachedStart
|
||||
&& timePerPixel == cachedTimePerPixel
|
||||
&& ! cacheNeedsRefilling)
|
||||
{
|
||||
return ! cacheNeedsRefilling;
|
||||
}
|
||||
|
||||
numSamplesCached = numSamples;
|
||||
numChannelsCached = numChans;
|
||||
cachedStart = startTime;
|
||||
cachedTimePerPixel = timePerPixel;
|
||||
cacheNeedsRefilling = false;
|
||||
|
||||
ensureSize (numSamples);
|
||||
|
||||
if (timePerPixel * rate <= sampsPerThumbSample && levelData != nullptr)
|
||||
{
|
||||
auto sample = roundToInt (startTime * rate);
|
||||
Array<Range<float>> levels;
|
||||
|
||||
int i;
|
||||
for (i = 0; i < numSamples; ++i)
|
||||
{
|
||||
auto nextSample = roundToInt ((startTime + timePerPixel) * rate);
|
||||
|
||||
if (sample >= 0)
|
||||
{
|
||||
if (sample >= levelData->lengthInSamples)
|
||||
{
|
||||
for (int chan = 0; chan < numChannelsCached; ++chan)
|
||||
*getData (chan, i) = MinMaxValue();
|
||||
}
|
||||
else
|
||||
{
|
||||
levelData->getLevels (sample, jmax (1, nextSample - sample), levels);
|
||||
|
||||
auto totalChans = jmin (levels.size(), numChannelsCached);
|
||||
|
||||
for (int chan = 0; chan < totalChans; ++chan)
|
||||
getData (chan, i)->setFloat (levels.getReference (chan));
|
||||
}
|
||||
}
|
||||
|
||||
startTime += timePerPixel;
|
||||
sample = nextSample;
|
||||
}
|
||||
|
||||
numSamplesCached = i;
|
||||
}
|
||||
else
|
||||
{
|
||||
jassert (chans.size() == numChannelsCached);
|
||||
|
||||
for (int channelNum = 0; channelNum < numChannelsCached; ++channelNum)
|
||||
{
|
||||
ThumbData* channelData = chans.getUnchecked (channelNum);
|
||||
MinMaxValue* cacheData = getData (channelNum, 0);
|
||||
|
||||
auto timeToThumbSampleFactor = rate / (double) sampsPerThumbSample;
|
||||
|
||||
startTime = cachedStart;
|
||||
auto sample = roundToInt (startTime * timeToThumbSampleFactor);
|
||||
|
||||
for (int i = numSamples; --i >= 0;)
|
||||
{
|
||||
auto nextSample = roundToInt ((startTime + timePerPixel) * timeToThumbSampleFactor);
|
||||
|
||||
channelData->getMinMax (sample, nextSample, *cacheData);
|
||||
|
||||
++cacheData;
|
||||
startTime += timePerPixel;
|
||||
sample = nextSample;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
MinMaxValue* getData (const int channelNum, const int cacheIndex) noexcept
|
||||
{
|
||||
jassert (isPositiveAndBelow (channelNum, numChannelsCached) && isPositiveAndBelow (cacheIndex, data.size()));
|
||||
|
||||
return data.getRawDataPointer() + channelNum * numSamplesCached
|
||||
+ cacheIndex;
|
||||
}
|
||||
|
||||
void ensureSize (const int numSamples)
|
||||
{
|
||||
auto itemsRequired = numSamples * numChannelsCached;
|
||||
|
||||
if (data.size() < itemsRequired)
|
||||
data.insertMultiple (-1, MinMaxValue(), itemsRequired - data.size());
|
||||
}
|
||||
};
|
||||
|
||||
//==============================================================================
|
||||
AudioThumbnail::AudioThumbnail (const int originalSamplesPerThumbnailSample,
|
||||
AudioFormatManager& formatManager,
|
||||
AudioThumbnailCache& cacheToUse)
|
||||
: formatManagerToUse (formatManager),
|
||||
cache (cacheToUse),
|
||||
window (new CachedWindow()),
|
||||
samplesPerThumbSample (originalSamplesPerThumbnailSample)
|
||||
{
|
||||
}
|
||||
|
||||
AudioThumbnail::~AudioThumbnail()
|
||||
{
|
||||
clear();
|
||||
}
|
||||
|
||||
void AudioThumbnail::clear()
|
||||
{
|
||||
source.reset();
|
||||
const ScopedLock sl (lock);
|
||||
clearChannelData();
|
||||
}
|
||||
|
||||
void AudioThumbnail::clearChannelData()
|
||||
{
|
||||
window->invalidate();
|
||||
channels.clear();
|
||||
totalSamples = numSamplesFinished = 0;
|
||||
numChannels = 0;
|
||||
sampleRate = 0;
|
||||
|
||||
sendChangeMessage();
|
||||
}
|
||||
|
||||
void AudioThumbnail::reset (int newNumChannels, double newSampleRate, int64 totalSamplesInSource)
|
||||
{
|
||||
clear();
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
numChannels = newNumChannels;
|
||||
sampleRate = newSampleRate;
|
||||
totalSamples = totalSamplesInSource;
|
||||
|
||||
createChannels (1 + (int) (totalSamplesInSource / samplesPerThumbSample));
|
||||
}
|
||||
|
||||
void AudioThumbnail::createChannels (const int length)
|
||||
{
|
||||
while (channels.size() < numChannels)
|
||||
channels.add (new ThumbData (length));
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
bool AudioThumbnail::loadFrom (InputStream& rawInput)
|
||||
{
|
||||
BufferedInputStream input (rawInput, 4096);
|
||||
|
||||
if (input.readByte() != 'j' || input.readByte() != 'a' || input.readByte() != 't' || input.readByte() != 'm')
|
||||
return false;
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
clearChannelData();
|
||||
|
||||
samplesPerThumbSample = input.readInt();
|
||||
totalSamples = input.readInt64(); // Total number of source samples.
|
||||
numSamplesFinished = input.readInt64(); // Number of valid source samples that have been read into the thumbnail.
|
||||
int32 numThumbnailSamples = input.readInt(); // Number of samples in the thumbnail data.
|
||||
numChannels = input.readInt(); // Number of audio channels.
|
||||
sampleRate = input.readInt(); // Source sample rate.
|
||||
input.skipNextBytes (16); // (reserved)
|
||||
|
||||
createChannels (numThumbnailSamples);
|
||||
|
||||
for (int i = 0; i < numThumbnailSamples; ++i)
|
||||
for (int chan = 0; chan < numChannels; ++chan)
|
||||
channels.getUnchecked(chan)->getData(i)->read (input);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void AudioThumbnail::saveTo (OutputStream& output) const
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
const int numThumbnailSamples = channels.size() == 0 ? 0 : channels.getUnchecked(0)->getSize();
|
||||
|
||||
output.write ("jatm", 4);
|
||||
output.writeInt (samplesPerThumbSample);
|
||||
output.writeInt64 (totalSamples);
|
||||
output.writeInt64 (numSamplesFinished);
|
||||
output.writeInt (numThumbnailSamples);
|
||||
output.writeInt (numChannels);
|
||||
output.writeInt ((int) sampleRate);
|
||||
output.writeInt64 (0);
|
||||
output.writeInt64 (0);
|
||||
|
||||
for (int i = 0; i < numThumbnailSamples; ++i)
|
||||
for (int chan = 0; chan < numChannels; ++chan)
|
||||
channels.getUnchecked(chan)->getData(i)->write (output);
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
bool AudioThumbnail::setDataSource (LevelDataSource* newSource)
|
||||
{
|
||||
JUCE_ASSERT_MESSAGE_MANAGER_IS_LOCKED
|
||||
|
||||
numSamplesFinished = 0;
|
||||
auto wasSuccessful = [&] { return sampleRate > 0 && totalSamples > 0; };
|
||||
|
||||
if (cache.loadThumb (*this, newSource->hashCode) && isFullyLoaded())
|
||||
{
|
||||
source.reset (newSource); // (make sure this isn't done before loadThumb is called)
|
||||
|
||||
source->lengthInSamples = totalSamples;
|
||||
source->sampleRate = sampleRate;
|
||||
source->numChannels = (unsigned int) numChannels;
|
||||
source->numSamplesFinished = numSamplesFinished;
|
||||
|
||||
return wasSuccessful();
|
||||
}
|
||||
|
||||
source.reset (newSource);
|
||||
|
||||
const ScopedLock sl (lock);
|
||||
source->initialise (numSamplesFinished);
|
||||
|
||||
totalSamples = source->lengthInSamples;
|
||||
sampleRate = source->sampleRate;
|
||||
numChannels = (int32) source->numChannels;
|
||||
|
||||
createChannels (1 + (int) (totalSamples / samplesPerThumbSample));
|
||||
|
||||
return wasSuccessful();
|
||||
}
|
||||
|
||||
bool AudioThumbnail::setSource (InputSource* const newSource)
|
||||
{
|
||||
clear();
|
||||
|
||||
return newSource != nullptr && setDataSource (new LevelDataSource (*this, newSource));
|
||||
}
|
||||
|
||||
void AudioThumbnail::setReader (AudioFormatReader* newReader, int64 hash)
|
||||
{
|
||||
clear();
|
||||
|
||||
if (newReader != nullptr)
|
||||
setDataSource (new LevelDataSource (*this, newReader, hash));
|
||||
}
|
||||
|
||||
int64 AudioThumbnail::getHashCode() const
|
||||
{
|
||||
return source == nullptr ? 0 : source->hashCode;
|
||||
}
|
||||
|
||||
void AudioThumbnail::addBlock (int64 startSample, const AudioBuffer<float>& incoming,
|
||||
int startOffsetInBuffer, int numSamples)
|
||||
{
|
||||
jassert (startSample >= 0
|
||||
&& startOffsetInBuffer >= 0
|
||||
&& startOffsetInBuffer + numSamples <= incoming.getNumSamples());
|
||||
|
||||
auto firstThumbIndex = (int) (startSample / samplesPerThumbSample);
|
||||
auto lastThumbIndex = (int) ((startSample + numSamples + (samplesPerThumbSample - 1)) / samplesPerThumbSample);
|
||||
auto numToDo = lastThumbIndex - firstThumbIndex;
|
||||
|
||||
if (numToDo > 0)
|
||||
{
|
||||
auto numChans = jmin (channels.size(), incoming.getNumChannels());
|
||||
|
||||
const HeapBlock<MinMaxValue> thumbData (numToDo * numChans);
|
||||
const HeapBlock<MinMaxValue*> thumbChannels (numChans);
|
||||
|
||||
for (int chan = 0; chan < numChans; ++chan)
|
||||
{
|
||||
auto* sourceData = incoming.getReadPointer (chan, startOffsetInBuffer);
|
||||
auto* dest = thumbData + numToDo * chan;
|
||||
thumbChannels [chan] = dest;
|
||||
|
||||
for (int i = 0; i < numToDo; ++i)
|
||||
{
|
||||
auto start = i * samplesPerThumbSample;
|
||||
dest[i].setFloat (FloatVectorOperations::findMinAndMax (sourceData + start, jmin (samplesPerThumbSample, numSamples - start)));
|
||||
}
|
||||
}
|
||||
|
||||
setLevels (thumbChannels, firstThumbIndex, numChans, numToDo);
|
||||
}
|
||||
}
|
||||
|
||||
void AudioThumbnail::setLevels (const MinMaxValue* const* values, int thumbIndex, int numChans, int numValues)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
for (int i = jmin (numChans, channels.size()); --i >= 0;)
|
||||
channels.getUnchecked(i)->write (values[i], thumbIndex, numValues);
|
||||
|
||||
auto start = thumbIndex * (int64) samplesPerThumbSample;
|
||||
auto end = (thumbIndex + numValues) * (int64) samplesPerThumbSample;
|
||||
|
||||
if (numSamplesFinished >= start && end > numSamplesFinished)
|
||||
numSamplesFinished = end;
|
||||
|
||||
totalSamples = jmax (numSamplesFinished, totalSamples.load());
|
||||
window->invalidate();
|
||||
sendChangeMessage();
|
||||
}
|
||||
|
||||
//==============================================================================
|
||||
int AudioThumbnail::getNumChannels() const noexcept
|
||||
{
|
||||
return numChannels;
|
||||
}
|
||||
|
||||
double AudioThumbnail::getTotalLength() const noexcept
|
||||
{
|
||||
return sampleRate > 0 ? ((double) totalSamples / sampleRate) : 0.0;
|
||||
}
|
||||
|
||||
bool AudioThumbnail::isFullyLoaded() const noexcept
|
||||
{
|
||||
return numSamplesFinished >= totalSamples - samplesPerThumbSample;
|
||||
}
|
||||
|
||||
double AudioThumbnail::getProportionComplete() const noexcept
|
||||
{
|
||||
return jlimit (0.0, 1.0, (double) numSamplesFinished / (double) jmax ((int64) 1, totalSamples.load()));
|
||||
}
|
||||
|
||||
int64 AudioThumbnail::getNumSamplesFinished() const noexcept
|
||||
{
|
||||
return numSamplesFinished;
|
||||
}
|
||||
|
||||
float AudioThumbnail::getApproximatePeak() const
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
int peak = 0;
|
||||
|
||||
for (auto* c : channels)
|
||||
peak = jmax (peak, c->getPeak());
|
||||
|
||||
return (float) jlimit (0, 127, peak) / 127.0f;
|
||||
}
|
||||
|
||||
void AudioThumbnail::getApproximateMinMax (double startTime, double endTime, int channelIndex,
|
||||
float& minValue, float& maxValue) const noexcept
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
MinMaxValue result;
|
||||
auto* data = channels [channelIndex];
|
||||
|
||||
if (data != nullptr && sampleRate > 0)
|
||||
{
|
||||
auto firstThumbIndex = (int) ((startTime * sampleRate) / samplesPerThumbSample);
|
||||
auto lastThumbIndex = (int) (((endTime * sampleRate) + samplesPerThumbSample - 1) / samplesPerThumbSample);
|
||||
|
||||
data->getMinMax (jmax (0, firstThumbIndex), lastThumbIndex, result);
|
||||
}
|
||||
|
||||
minValue = result.getMinValue() / 128.0f;
|
||||
maxValue = result.getMaxValue() / 128.0f;
|
||||
}
|
||||
|
||||
void AudioThumbnail::drawChannel (Graphics& g, const Rectangle<int>& area, double startTime,
|
||||
double endTime, int channelNum, float verticalZoomFactor)
|
||||
{
|
||||
const ScopedLock sl (lock);
|
||||
|
||||
window->drawChannel (g, area, startTime, endTime, channelNum, verticalZoomFactor,
|
||||
sampleRate, numChannels, samplesPerThumbSample, source.get(), channels);
|
||||
}
|
||||
|
||||
void AudioThumbnail::drawChannels (Graphics& g, const Rectangle<int>& area, double startTimeSeconds,
|
||||
double endTimeSeconds, float verticalZoomFactor)
|
||||
{
|
||||
for (int i = 0; i < numChannels; ++i)
|
||||
{
|
||||
auto y1 = roundToInt ((i * area.getHeight()) / numChannels);
|
||||
auto y2 = roundToInt (((i + 1) * area.getHeight()) / numChannels);
|
||||
|
||||
drawChannel (g, { area.getX(), area.getY() + y1, area.getWidth(), y2 - y1 },
|
||||
startTimeSeconds, endTimeSeconds, i, verticalZoomFactor);
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace juce
|
Reference in New Issue
Block a user