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84 lines
2.5 KiB
84 lines
2.5 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef HISTOGRAM_HISTOGRAM_COLLECTOR_H_
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#define HISTOGRAM_HISTOGRAM_COLLECTOR_H_
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#include <android-base/thread_annotations.h>
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#include <string>
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#include <thread>
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#include <mutex>
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#include <condition_variable>
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#define HWC2_INCLUDE_STRINGIFICATION
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#define HWC2_USE_CPP11
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#include <hardware/hwcomposer2.h>
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#undef HWC2_INCLUDE_STRINGIFICATION
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#undef HWC2_USE_CPP11
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//number of enums in hwc2_format_color_component_t;
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#define NUM_HISTOGRAM_COLOR_COMPONENTS 4
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namespace histogram {
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typedef uint32_t BlobId;
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class Ringbuffer;
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class HistogramCollector
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{
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public:
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HistogramCollector();
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~HistogramCollector();
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void start();
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void start(uint64_t max_frames);
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void stop();
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void notify_histogram_event(int blob_source_fd, BlobId id);
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std::string Dump() const;
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HWC2::Error collect(uint64_t max_frames,
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uint64_t timestamp,
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int32_t samples_size[NUM_HISTOGRAM_COLOR_COMPONENTS],
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uint64_t* samples[NUM_HISTOGRAM_COLOR_COMPONENTS],
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uint64_t* numFrames) const;
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HWC2::Error getAttributes(int32_t* format,
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int32_t* dataspace,
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uint8_t* supported_components) const;
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private:
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HistogramCollector(HistogramCollector const&) = delete;
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HistogramCollector& operator=(HistogramCollector const&) = delete;
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void blob_processing_thread();
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std::condition_variable cv;
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std::mutex mutable mutex;
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bool started /* GUARDED_BY(mutex) */ = false;
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struct BlobWork {
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int fd; /* non-owning! */
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BlobId id;
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} blobwork /* GUARDED_BY(mutex) */;
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//no optional in c++14.
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bool work_available = false; /* GUARDED_BY(mutex) */;
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std::thread monitoring_thread;
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std::unique_ptr<histogram::Ringbuffer> histogram;
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};
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} // namespace histogram
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#endif // HISTOGRAM_HISTOGRAM_COLLECTOR_H_
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