diff options
Diffstat (limited to 'apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h')
| -rw-r--r-- | apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h | 158 |
1 files changed, 144 insertions, 14 deletions
diff --git a/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h b/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h index 3d1c8977..157c0817 100644 --- a/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h +++ b/apps/OboeTester/app/src/main/cpp/OboeStreamCallbackProxy.h @@ -19,8 +19,12 @@ #include <unistd.h> #include <sys/types.h> +#include <sys/sysinfo.h> #include "oboe/Oboe.h" +#include "synth/Synthesizer.h" +#include "synth/SynthTools.h" +#include "OboeTesterStreamCallback.h" class DoubleStatistics { public: @@ -65,12 +69,79 @@ private: std::atomic<double> maximum { 0 }; }; -class OboeStreamCallbackProxy : public oboe::AudioStreamCallback { +/** + * Manage the synthesizer workload that burdens the CPU. + * Adjust the number of voices according to the requested workload. + * Trigger noteOn and noteOff messages. + */ +class SynthWorkload { +public: + SynthWorkload() { + mSynth.setup(marksynth::kSynthmarkSampleRate, marksynth::kSynthmarkMaxVoices); + } + + void onCallback(double workload) { + // If workload changes then restart notes. + if (workload != mPreviousWorkload) { + mSynth.allNotesOff(); + mAreNotesOn = false; + mCountdown = 0; // trigger notes on + mPreviousWorkload = workload; + } + if (mCountdown <= 0) { + if (mAreNotesOn) { + mSynth.allNotesOff(); + mAreNotesOn = false; + mCountdown = mOffFrames; + } else { + mSynth.notesOn((int)mPreviousWorkload); + mAreNotesOn = true; + mCountdown = mOnFrames; + } + } + } + + /** + * Render the notes into a stereo buffer. + * Passing a nullptr will cause the calculated results to be discarded. + * The workload should be the same. + * @param buffer a real stereo buffer or nullptr + * @param numFrames + */ + void renderStereo(float *buffer, int numFrames) { + if (buffer == nullptr) { + int framesLeft = numFrames; + while (framesLeft > 0) { + int framesThisTime = std::min(kDummyBufferSizeInFrames, framesLeft); + // Do the work then throw it away. + mSynth.renderStereo(&mDummyStereoBuffer[0], framesThisTime); + framesLeft -= framesThisTime; + } + } else { + mSynth.renderStereo(buffer, numFrames); + } + mCountdown -= numFrames; + } + +private: + marksynth::Synthesizer mSynth; + static constexpr int kDummyBufferSizeInFrames = 32; + float mDummyStereoBuffer[kDummyBufferSizeInFrames * 2]; + double mPreviousWorkload = 1.0; + bool mAreNotesOn = false; + int mCountdown = 0; + int mOnFrames = (int) (0.2 * 48000); + int mOffFrames = (int) (0.3 * 48000); +}; + +class OboeStreamCallbackProxy : public OboeTesterStreamCallback { public: - void setCallback(oboe::AudioStreamCallback *callback) { + + void setDataCallback(oboe::AudioStreamDataCallback *callback) { mCallback = callback; setCallbackCount(0); mStatistics.clear(); + mPreviousMask = 0; } static void setCallbackReturnStop(bool b) { @@ -100,39 +171,98 @@ public: /** * Specify the amount of artificial workload that will waste CPU cycles * and increase the CPU load. - * @param workload typically ranges from 0.0 to 100.0 + * @param workload typically ranges from 0 to 400 */ - void setWorkload(double workload) { - mWorkload = std::max(0.0, workload); + void setWorkload(int32_t workload) { + mNumWorkloadVoices = std::max(0, workload); + } + + int32_t getWorkload() const { + return mNumWorkloadVoices; } - double getWorkload() const { - return mWorkload; + void setHearWorkload(bool enabled) { + mHearWorkload = enabled; } - double getCpuLoad() const { + /** + * This is the callback duration relative to the real-time equivalent. + * So it may be higher than 1.0. + * @return low pass filtered value for the fractional CPU load + */ + float getCpuLoad() const { return mCpuLoad; } + /** + * Calling this will atomically reset the max to zero so only call + * this from one client. + * + * @return last value of the maximum unfiltered CPU load. + */ + float getAndResetMaxCpuLoad() { + return mMaxCpuLoad.exchange(0.0f); + } + std::string getCallbackTimeString() const { return mStatistics.dump(); } - static int64_t getNanoseconds(clockid_t clockId = CLOCK_MONOTONIC); + /** + * @return mask of the CPUs used since the last reset + */ + uint32_t getAndResetCpuMask() { + return mCpuMask.exchange(0); + } + void orCurrentCpuMask(int cpuIndex) { + mCpuMask |= (1 << cpuIndex); + } + + /** + * @param cpuIndex + * @return 0 on success or a negative errno + */ + int setCpuAffinity(int cpuIndex) { + cpu_set_t cpu_set; + CPU_ZERO(&cpu_set); + CPU_SET(cpuIndex, &cpu_set); + int err = sched_setaffinity((pid_t) 0, sizeof(cpu_set_t), &cpu_set); + return err == 0 ? 0 : -errno; + } + + /** + * + * @param mask bits for each CPU or zero for all + * @return + */ + int applyCpuAffinityMask(uint32_t mask); + + void setCpuAffinityMask(uint32_t mask) { + mCpuAffinityMask = mask; + } private: - static constexpr int32_t kWorkloadScaler = 500; static constexpr double kNsToMsScaler = 0.000001; - double mWorkload = 0.0; - std::atomic<double> mCpuLoad{0}; + std::atomic<float> mCpuLoad{0.0f}; + std::atomic<float> mMaxCpuLoad{0.0f}; int64_t mPreviousCallbackTimeNs = 0; DoubleStatistics mStatistics; + int32_t mNumWorkloadVoices = 0; + SynthWorkload mSynthWorkload; + bool mHearWorkload = false; - oboe::AudioStreamCallback *mCallback = nullptr; + oboe::AudioStreamDataCallback *mCallback = nullptr; static bool mCallbackReturnStop; + int64_t mCallbackCount = 0; std::atomic<int32_t> mFramesPerCallback{0}; -}; + std::atomic<uint32_t> mCpuAffinityMask{0}; + std::atomic<uint32_t> mPreviousMask{0}; + std::atomic<uint32_t> mCpuMask{0}; + cpu_set_t mOriginalCpuSet; + bool mIsOriginalCpuSetValid = false; + +}; #endif //NATIVEOBOE_OBOESTREAMCALLBACKPROXY_H |