Gitea Mirror Bot
197 lines
7.5 KiB
C++
197 lines
7.5 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "precomp.hpp"
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#ifdef HAVE_NVCUVID
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using namespace cv;
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using namespace cv::cudacodec;
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using namespace cv::cudacodec::detail;
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#ifndef CV_FOURCC_MACRO
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#define CV_FOURCC_MACRO(c1, c2, c3, c4) (((c1) & 255) + (((c2) & 255) << 8) + (((c3) & 255) << 16) + (((c4) & 255) << 24))
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#endif
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static std::string fourccToString(int fourcc)
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{
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char str[5] = {'\0', '\0', '\0', '\0'};
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for (int i = 0; i < 4; i++) {
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char c = (char)(fourcc >> i*8);
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str[i] = ' ' <= c && c < 128 ? c : '?';
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}
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return std::string(str);
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}
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static
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Codec FourccToCodec(int codec)
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{
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switch (codec)
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{
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case CV_FOURCC_MACRO('m', 'p', 'g', '1'): return MPEG1;
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case CV_FOURCC_MACRO('m', 'p', 'g', '2'): return MPEG2;
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case CV_FOURCC_MACRO('F', 'M', 'P', '4'): return MPEG4;
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case CV_FOURCC_MACRO('W', 'V', 'C', '1'): return VC1;
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case CV_FOURCC_MACRO('h', '2', '6', '4'): return H264;
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case CV_FOURCC_MACRO('h', 'e', 'v', 'c'): return HEVC;
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case CV_FOURCC_MACRO('M', 'J', 'P', 'G'): return JPEG;
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case CV_FOURCC_MACRO('V', 'P', '8', '0'): return VP8;
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case CV_FOURCC_MACRO('V', 'P', '9', '0'): return VP9;
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case CV_FOURCC_MACRO('A', 'V', '0', '1'): return AV1;
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default:
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break;
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}
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std::string msg = cv::format("Unknown codec FOURCC: 0x%08X (%s)", codec, fourccToString(codec).c_str());
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CV_LOG_WARNING(NULL, msg);
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CV_Error(Error::StsUnsupportedFormat, msg);
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}
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static
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int StartCodeLen(unsigned char* data, const int sz) {
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if (sz >= 3 && data[0] == 0 && data[1] == 0 && data[2] == 1)
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return 3;
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else if (sz >= 4 && data[0] == 0 && data[1] == 0 && data[2] == 0 && data[3] == 1)
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return 4;
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else
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return 0;
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}
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bool ParamSetsExist(unsigned char* parameterSets, const int szParameterSets, unsigned char* data, const int szData) {
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const int paramSetStartCodeLen = StartCodeLen(parameterSets, szParameterSets);
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const int packetStartCodeLen = StartCodeLen(data, szData);
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// weak test to see if the parameter set has already been included in the RTP stream
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return paramSetStartCodeLen != 0 && packetStartCodeLen != 0 && parameterSets[paramSetStartCodeLen] == data[packetStartCodeLen];
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}
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cv::cudacodec::detail::FFmpegVideoSource::FFmpegVideoSource(const String& fname, const std::vector<int>& _videoCaptureParams, const int iMaxStartFrame)
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: videoCaptureParams(_videoCaptureParams)
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{
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if (!videoio_registry::hasBackend(CAP_FFMPEG))
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CV_Error(Error::StsNotImplemented, "FFmpeg backend not found");
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videoCaptureParams.push_back(CAP_PROP_FORMAT);
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videoCaptureParams.push_back(-1);
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if (!cap.open(fname, CAP_FFMPEG, videoCaptureParams))
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CV_Error(Error::StsUnsupportedFormat, "Unsupported video source");
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CV_Assert(cap.get(CAP_PROP_FORMAT) == -1);
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if (iMaxStartFrame) {
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CV_Assert(cap.set(CAP_PROP_POS_FRAMES, iMaxStartFrame));
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firstFrameIdx = static_cast<int>(cap.get(CAP_PROP_POS_FRAMES));
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}
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const int codecExtradataIndex = static_cast<int>(cap.get(CAP_PROP_CODEC_EXTRADATA_INDEX));
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Mat tmpExtraData;
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if (cap.retrieve(tmpExtraData, codecExtradataIndex) && tmpExtraData.total())
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extraData = tmpExtraData.clone();
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int codec = (int)cap.get(CAP_PROP_FOURCC);
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format_.codec = FourccToCodec(codec);
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format_.height = cap.get(CAP_PROP_FRAME_HEIGHT);
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format_.width = cap.get(CAP_PROP_FRAME_WIDTH);
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format_.displayArea = Rect(0, 0, format_.width, format_.height);
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format_.valid = false;
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format_.fps = cap.get(CAP_PROP_FPS);
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}
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cv::cudacodec::detail::FFmpegVideoSource::~FFmpegVideoSource()
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{
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if (cap.isOpened())
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cap.release();
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}
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FormatInfo cv::cudacodec::detail::FFmpegVideoSource::format() const
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{
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return format_;
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}
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void cv::cudacodec::detail::FFmpegVideoSource::updateFormat(const FormatInfo& videoFormat)
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{
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format_ = videoFormat;
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format_.valid = true;
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}
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bool cv::cudacodec::detail::FFmpegVideoSource::get(const int propertyId, double& propertyVal) const
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{
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propertyVal = cap.get(propertyId);
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if (propertyVal != CAP_PROP_UNKNOWN)
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return true;
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CV_Assert(videoCaptureParams.size() % 2 == 0);
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for (std::size_t i = 0; i < videoCaptureParams.size(); i += 2) {
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if (videoCaptureParams.at(i) == propertyId) {
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propertyVal = videoCaptureParams.at(i + 1);
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return true;
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}
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}
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return false;
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}
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bool cv::cudacodec::detail::FFmpegVideoSource::getNextPacket(unsigned char** data, size_t* size)
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{
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cap >> rawFrame;
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*data = rawFrame.data;
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*size = rawFrame.total();
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if (iFrame++ == 0 && extraData.total()) {
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if (format_.codec == Codec::MPEG4 ||
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((format_.codec == Codec::H264 || format_.codec == Codec::HEVC) && !ParamSetsExist(extraData.data, extraData.total(), *data, *size)))
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{
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const size_t nBytesToTrimFromData = format_.codec == Codec::MPEG4 ? 3 : 0;
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const size_t newSz = extraData.total() + *size - nBytesToTrimFromData;
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dataWithHeader = Mat(1, newSz, CV_8UC1);
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memcpy(dataWithHeader.data, extraData.data, extraData.total());
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memcpy(dataWithHeader.data + extraData.total(), (*data) + nBytesToTrimFromData, *size - nBytesToTrimFromData);
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*data = dataWithHeader.data;
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*size = newSz;
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}
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}
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return *size != 0;
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}
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bool cv::cudacodec::detail::FFmpegVideoSource::lastPacketContainsKeyFrame() const
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{
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return cap.get(CAP_PROP_LRF_HAS_KEY_FRAME);
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}
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#endif // HAVE_CUDA
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