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Added AudioSampleBuffer::reverse() method.

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This commit is contained in:
jules 2013-09-11 11:40:59 +01:00
parent 463325c0c6
commit 3ef1ab02c6
2 changed files with 29 additions and 25 deletions
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36
modules/juce_audio_basics/buffers/juce_AudioSampleBuffer.cpp
View file

@ -285,9 +285,7 @@ void AudioSampleBuffer::applyGainRamp (const int channel,
}
}
void AudioSampleBuffer::applyGain (const int startSample,
const int numSamples,
const float gain) noexcept
void AudioSampleBuffer::applyGain (int startSample, int numSamples, float gain) noexcept
{
for (int i = 0; i < numChannels; ++i)
applyGain (i, startSample, numSamples, gain);
@ -298,10 +296,8 @@ void AudioSampleBuffer::applyGain (const float gain) noexcept
applyGain (0, size, gain);
}
void AudioSampleBuffer::applyGainRamp (const int startSample,
const int numSamples,
const float startGain,
const float endGain) noexcept
void AudioSampleBuffer::applyGainRamp (int startSample, int numSamples,
float startGain, float endGain) noexcept
{
for (int i = 0; i < numChannels; ++i)
applyGainRamp (i, startSample, numSamples, startGain, endGain);
@ -399,11 +395,9 @@ void AudioSampleBuffer::copyFrom (const int destChannel,
jassert (sourceStartSample >= 0 && sourceStartSample + numSamples <= source.size);
if (numSamples > 0)
{
FloatVectorOperations::copy (channels [destChannel] + destStartSample,
source.channels [sourceChannel] + sourceStartSample,
numSamples);
}
}
void AudioSampleBuffer::copyFrom (const int destChannel,
@ -416,11 +410,7 @@ void AudioSampleBuffer::copyFrom (const int destChannel,
jassert (source != nullptr);
if (numSamples > 0)
{
FloatVectorOperations::copy (channels [destChannel] + destStartSample,
source,
numSamples);
}
FloatVectorOperations::copy (channels [destChannel] + destStartSample, source, numSamples);
}
void AudioSampleBuffer::copyFrom (const int destChannel,
@ -482,6 +472,21 @@ void AudioSampleBuffer::copyFromWithRamp (const int destChannel,
}
}
void AudioSampleBuffer::reverse (int channel, int startSample, int numSamples) const noexcept
{
jassert (isPositiveAndBelow (channel, numChannels));
jassert (startSample >= 0 && startSample + numSamples <= size);
std::reverse (channels[channel] + startSample,
channels[channel] + startSample + numSamples);
}
void AudioSampleBuffer::reverse (int startSample, int numSamples) const noexcept
{
for (int i = 0; i < numChannels; ++i)
reverse (i, startSample, numSamples);
}
void AudioSampleBuffer::findMinMax (const int channel,
const int startSample,
int numSamples,
@ -508,8 +513,7 @@ float AudioSampleBuffer::getMagnitude (const int channel,
return jmax (mn, -mn, mx, -mx);
}
float AudioSampleBuffer::getMagnitude (const int startSample,
const int numSamples) const noexcept
float AudioSampleBuffer::getMagnitude (int startSample, int numSamples) const noexcept
{
float mag = 0.0f;

18
modules/juce_audio_basics/buffers/juce_AudioSampleBuffer.h
View file

@ -107,19 +107,16 @@ public:
//==============================================================================
/** Returns the number of channels of audio data that this buffer contains.
@see getSampleData
*/
int getNumChannels() const noexcept { return numChannels; }
/** Returns the number of samples allocated in each of the buffer's channels.
@see getSampleData
*/
int getNumSamples() const noexcept { return size; }
/** Returns a pointer one of the buffer's channels.
For speed, this doesn't check whether the channel number is out of range,
so be careful when using it!
*/
@ -409,23 +406,26 @@ public:
float& minVal,
float& maxVal) const noexcept;
/** Finds the highest absolute sample value within a region of a channel.
*/
/** Finds the highest absolute sample value within a region of a channel. */
float getMagnitude (int channel,
int startSample,
int numSamples) const noexcept;
/** Finds the highest absolute sample value within a region on all channels.
*/
/** Finds the highest absolute sample value within a region on all channels. */
float getMagnitude (int startSample,
int numSamples) const noexcept;
/** Returns the root mean squared level for a region of a channel.
*/
/** Returns the root mean squared level for a region of a channel. */
float getRMSLevel (int channel,
int startSample,
int numSamples) const noexcept;
/** Reverses a part of a channel. */
void reverse (int channel, int startSample, int numSamples) const noexcept;
/** Reverses a part of the buffer. */
void reverse (int startSample, int numSamples) const noexcept;
private:
//==============================================================================
int numChannels, size;