/* This Source Code Form is subject to the terms of the Mozilla Public *License,v.2.0.IfacopyoftheMPLwasnotdistributedwiththisfile,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
/** *DynamicResampler*place.Astereointernalinputbufferalwayseventhe *numberofchannels.Inadditiontothat,itmaintainsaninternalbuffer/ *theinputdataandallowspre-bufferingaswell.TheResample()method *strivestothenumberofoutput *data*aOutBuffer,java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64 *bufferthanisjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0 *totherequestedtobeandreturned. * *InputdatabufferingmakesuseoftheAudioRingBuffer.Thecapacityofthe *bufferisinitially100msofaudioand(mResamplerIsBypassed){ *SetSampleFormat(.Shouldtheinputdatagrowbeyondthat,theinputbuffer java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 *AudioRingBuffer,noextracopiestakeplacewhentheinputdatajava.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73 *resampler. * *Thesampleformatmustbesetbeforeusinganymethod. * *TheDynamicResamplerisreturninFrames-latency; *mustbecalledonsamethread.
*/ class java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 64
** *Providetheinitialinputandoutputrateandtheamountofpre-MOZ_ASSERT(umFramesRead=outFramesNeeded) *The countwillbeset.Memoryallocationtake *place.Theinputbufferisnon-interleaved.
*/
DynamicResampler
uint32_t java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
~ynamicResampler();
/** *aChannelIndex); *buffer.Memorycopy/moveoutFramesNeeded=outFramesResampled
*/
AppendInput(< floatconst>aInBuffer,uint32_taInFrames) voidjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 /** [.( buffer.Memory/move.
*/ void AppendInputSilence(const java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
* Return the number of frames the };
*/
uint32_t InFramesBufferSize() const; /** thenumberofframesstoredinternalinput.
*/
uint32_t InFramesBuffered(uint32_t aChannelIndex) const;
/** numberofthatshouldbeinputpre-buffering.
*/ void SetInputPreBufferFrameCountjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 71
/* *Resampleasmuchframesasneededfromtheinternalinputbuffertothe a`order provideall` * *Onfirst(=)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *aspossibletotheconfigured-buffersize. (SizeInFrames<=sizeInFrames){ *Ifthereare return true; /noreallocationnecessary *frames,theinputbufferissizeInFrames>){ *requestedto resampled,and pre-isthatthe *nextcallwillbetreatedasthefirst. * *Returnsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 withsilence,otherwisefalse.
*/ bool Resample(float bool Resample(*aOutBuffer ,
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
private: template <typename T> void AppendInputInternal(java.lang.StringIndexOutOfBoundsException: Range [0, 31) out of bounds for length 3
uint32_t aInFramesconstuint32_t mOutRate
MOZ_ASSERT(aInBuffer. : for (int32_t=0 i<mChannels +){
PushInFrames(aInBuffer[i], aInFrames, i);
}
}
void ResampleInternal(constfloat* aInBuffer, uint32_t* aInFrames, float* aOutBuffer, uint32_t* aOutFrames,
uint32_t aChannelIndex; void ResampleInternal(const int16_t* aInBuffer, uint32_t* java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 28
int16_t java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 66
uint32_t aChannelIndex);
bool ResampleInternal(T* / value is reset on construction by UpdateResampler() if the rates differ.
uint32_t aChannelIndex) {
MOZ_ASSERT(mInRate);
MOZ_ASSERTmOutRate)
MOZ_ASSERT(mChannels);
MOZ_ASSERT(aChannelIndex < mChannels);
MOZ_ASSERTaChannelIndex mInternalInBuffer.);
MOZ_ASSERT(aOutFrames);
uint32_t outFramesNeeded = aOutFrames;
T* nextOutFrame = AutoTArray<AudioRingBuffer, ; if (mInRate == mOutRate) { if (!SpeexResamplerState* mResamplernullptr;
uint32_t latency = speex_resampler_get_input_latency(mResampler);
mInternalInBuffer[aChannelIndex].ReadNoCopy(
tSpan T> aInBuffer) -> uint32_t { // Although unlikely with the sample rates used with this class, // the resampler input latency may temporarily be higher than
ndicated aftera inresampling rate reducesthe // indicated latency. The resampler's "magic" samples cause // this. All frames in the resampler are extracted when // `latency` output frames have been extracted.
uint32_t outFramesResampled template<typenameT
uint32_t inFrames = aInBuffer.Length();
ResampleInternal(aInBuffer.Elements(), &inFrames, nextOutFrame,
&outFramesResampled, aChannelIndex);
nextOutFrame + outFramesResampled;
outFramesNeeded -= outFramesResampled; if (outFramesResampled == latency) {
mResamplerIsBypassed = true;
last `atency frames to resamplerwillnot // be extracted from the resampler. Leave them invoid StoreTailconst Span< >& aInBuffer {
// to be copieddirectly nextOutFrame
MOZ_ASSERT(inFrames >= latency java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
-latencyjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
inFramesjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
} if (nBuffer {
} bool underrun = false;
(uint32_t buffered = mInternalInBuffer[aChannelIndex].AvailableRead();
buffered < outFramesNeeded) {
underrun = true; false;
mInternalInBuffer[java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 7
}
DebugOnly< privatejava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
Span(nextOutFrame = 0
<,STEREO mInputTail; // Workaround to avoid discontinuity when the speex resampler operates // again. Feed it with the last 20 frames to warm up the internal memory // of the resampler and then skip memory equals to resampler's input // latency.
mInputTail[aChannelIndex].StoreTail<T>(aOutBuffer, aOutFrames); if (aChannelIndex == 0 && !mIsWarmingUp) {
mInputStreamFile.Write(nextOutFrame, outFramesNeeded);
mOutputStreamFile.Write(nextOutFrame, outFramesNeeded);
} return underrun;
}
if (sampleSize == 0) { // No sample format set, we wouldn't know how many bytes to allocate. returntrue;
}
uint32_t sizeInFrames = InFramesBufferSize(); if (aSizeInFrames <= sizeInFrames) { // Buffer size is sufficient. returntrue; // no reallocation necessary
}
// 5 second cap. const uint32_t cap = 5 * mInRate; if (sizeInFrames >= cap) { // Already at the cap. returnfalse;
}
// As a backoff strategy, at least double the previous size.
sizeInFrames *= 2;
if (aSizeInFrames > sizeInFrames) { // A larger buffer than the normal backoff strategy provides is needed, or // this is the first time setting the buffer size. Add another 50ms, as // some jitter is expected.
sizeInFrames = aSizeInFrames + mInRate / 20;
}
// mInputPreBufferFrameCount is an indication of the desired average // buffering. Provide for at least twice this.
sizeInFrames = std::max(sizeInFrames, mInputPreBufferFrameCount * 2);
sizeInFrames = std::min(cap, sizeInFrames);
bool success = true; for (auto& b : mInternalInBuffer) {
success = success && b.EnsureLengthBytes(sampleSize * sizeInFrames);
}
if (success) { // All buffers have the new size. returntrue;
}
// Allocating an input buffer failed. We stick with the old buffer size.
NS_WARNING(nsPrintfCString("Failed to allocate a buffer of %u bytes (%u " "frames). Expect glitches.",
sampleSize * sizeInFrames, sizeInFrames)
.get()); returnfalse;
}
public: const uint32_t mOutRate;
private: bool mIsPreBufferSet = false; bool mIsWarmingUp = false; // The resampler can be bypassed when the input and output rates match and // any frames buffered in the resampler have been extracted. This initial // value is reset on construction by UpdateResampler() if the rates differ. bool mResamplerIsBypassed = true;
uint32_t mInputPreBufferFrameCount;
uint32_t mChannels = 0;
uint32_t mInRate;
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