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108 lines
4.0 KiB
108 lines
4.0 KiB
/*
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* Copyright (C) 2019 Samsung Electronics Co.,LTD.
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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 __HARDWARE_EXYNOS_LIBSCALERFORJPEG_H__
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#define __HARDWARE_EXYNOS_LIBSCALERFORJPEG_H__
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#include <functional>
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#include <linux/videodev2.h>
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#include "ThumbnailScaler.h"
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class LibScalerForJpeg : public ThumbnailScaler {
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public:
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LibScalerForJpeg() { }
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~LibScalerForJpeg() { }
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bool SetSrcImage(unsigned int width, unsigned int height, unsigned int v4l2_format) {
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return mSrcImage.set(width, height, v4l2_format);
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}
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bool SetDstImage(unsigned int width, unsigned int height, unsigned int v4l2_format) {
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return mDstImage.set(width, height, v4l2_format);
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}
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bool RunStream(int srcBuf[SCALER_MAX_PLANES], int srcLen[SCALER_MAX_PLANES], int dstBuf, size_t dstLen);
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bool RunStream(char *srcBuf[SCALER_MAX_PLANES], int srcLen[SCALER_MAX_PLANES], int dstBuf, size_t dstLen);
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bool available() { return mDevice.mFd >= 0; }
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private:
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struct Device {
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int mFd;
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Device();
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~Device();
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bool requestBuffers(unsigned int buftype, unsigned int memtype, unsigned int count);
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bool setFormat(unsigned int buftype, unsigned int format, unsigned int width, unsigned int height, unsigned int planelen[SCALER_MAX_PLANES]);
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bool streamOn(unsigned int buftype);
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bool streamOff(unsigned int buftype);
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bool queueBuffer(unsigned int buftype, std::function<void(v4l2_buffer &)> bufferFiller);
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bool queueBuffer(unsigned int buftype, int buf[SCALER_MAX_PLANES], unsigned int len[SCALER_MAX_PLANES]);
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bool queueBuffer(unsigned int buftype, char *buf[SCALER_MAX_PLANES], unsigned int len[SCALER_MAX_PLANES]);
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bool queueBuffer(unsigned int buftype, int buf, unsigned int len[SCALER_MAX_PLANES]);
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bool dequeueBuffer(unsigned int buftype, unsigned int memtype);
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};
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struct Image {
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Device &mDevice;
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unsigned int width;
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unsigned int height;
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unsigned int format;
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unsigned int memoryType = 0;
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const unsigned int bufferType;
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unsigned int planeLen[SCALER_MAX_PLANES];
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Image(Device &dev, unsigned int w, unsigned int h, unsigned int f, unsigned int buftype)
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: mDevice(dev), width(w), height(h), format(f), bufferType(buftype)
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{ }
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bool set(unsigned int width, unsigned int height, unsigned int format);
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bool begin(unsigned int memtype);
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bool cancelBuffer();
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template <class tBuf>
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bool queueBuffer(tBuf buf) { return mDevice.queueBuffer(bufferType, buf, planeLen); }
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bool dequeueBuffer() { return mDevice.dequeueBuffer(bufferType, memoryType); }
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bool same(unsigned int w, unsigned int h, unsigned int f) { return width == w && height == h && format == f; }
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};
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template<class T>
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bool queue(T srcBuf[SCALER_MAX_PLANES], int dstBuf) {
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if (!mSrcImage.queueBuffer(srcBuf))
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return false;
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if (!mDstImage.queueBuffer(dstBuf)) {
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mSrcImage.cancelBuffer();
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return false;
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}
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if (!mSrcImage.dequeueBuffer() || !mDstImage.dequeueBuffer()) {
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mSrcImage.cancelBuffer();
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mDstImage.cancelBuffer();
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return false;
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}
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return true;
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}
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Device mDevice;
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Image mSrcImage{mDevice, 0, 0, V4L2_PIX_FMT_YUYV, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE};
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Image mDstImage{mDevice, 0, 0, V4L2_PIX_FMT_YUYV, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE};
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};
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#endif //__HARDWARE_EXYNOS_LIBSCALERFORJPEG_H__
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