ArsenArsen
5 years ago
7 changed files with 356 additions and 95 deletions
@ -0,0 +1,21 @@
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#include "arrowitem.hpp" |
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#include <QtMath> |
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#include <settings.hpp> |
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void ArrowItem::mouseDragEvent(QGraphicsSceneMouseEvent *e, CropScene *scene) { |
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if (init.isNull()) { |
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init = e->scenePos(); |
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line = scene->addLine(QLineF(init, init), scene->pen()); |
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QPainterPath poly; |
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qreal w = settings::settings().value("arrow/width", 20).toDouble() / 2; |
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qreal h = settings::settings().value("arrow/height", 10).toDouble(); |
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poly.lineTo(QPoint(-w, h)); |
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poly.lineTo(QPoint(0, 0)); |
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poly.lineTo(QPoint(w, h)); |
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head = scene->addPath(poly, scene->pen(), scene->brush()); |
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} else { |
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line->setLine(QLineF(init, e->scenePos())); |
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head->setRotation(270 + qRadiansToDegrees(qAtan2((init.y() - e->scenePos().y()), (init.x() - e->scenePos().x())))); |
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} |
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head->setPos(e->scenePos()); |
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} |
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@ -0,0 +1,24 @@
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#ifndef ARROWITEM_HPP |
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#define ARROWITEM_HPP |
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#include "drawitem.hpp" |
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class ArrowItem : public DrawItem { |
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public: |
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ArrowItem() { |
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} |
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QString name() override { |
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return "Arrow"; |
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} |
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void mouseDragEvent(QGraphicsSceneMouseEvent *e, CropScene *scene) override; |
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void mouseDragEndEvent(QGraphicsSceneMouseEvent *, CropScene *) override { |
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} |
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private: |
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QGraphicsLineItem *line; |
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QGraphicsPathItem *head; |
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QPointF init; |
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}; |
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#endif // ARROWITEM_HPP
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@ -0,0 +1,171 @@
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#include "encoder.hpp" |
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#include <settings.hpp> |
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extern "C" { |
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#include <libavutil/imgutils.h> |
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#include <libavutil/opt.h> |
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} |
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inline void throwAVErr(int ret, std::string section) { |
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char err[AV_ERROR_MAX_STRING_SIZE]; |
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av_make_error_string(err, AV_ERROR_MAX_STRING_SIZE, ret); |
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std::string newString(err); |
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throw std::runtime_error("Error during: " + section + ": " + newString); |
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} |
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#define OR_DEF(s, e1, e2) s ? s->e1 : e2 |
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Encoder::Encoder(QString &targetFile, QSize res, CodecSettings *settings) { |
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int ret; |
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// Format
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ret = avformat_alloc_output_context2(&fc, NULL, NULL, targetFile.toLocal8Bit().constData()); |
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if (ret < 0) throwAVErr(ret, "format alloc"); |
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// Stream
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out->st = avformat_new_stream(fc, NULL); |
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if (!out->st) throw std::runtime_error("Unable to allocate video context"); |
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out->st->id = fc->nb_streams - 1; |
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if (fc->oformat->flags & AVFMT_GLOBALHEADER) fc->flags |= AV_CODEC_FLAG_GLOBAL_HEADER; |
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av_dump_format(fc, 0, targetFile.toLocal8Bit().constData(), 1); |
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// Codec
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if (!fc->oformat->video_codec) throw std::runtime_error("Video codec not found"); |
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codec = avcodec_find_encoder(fc->oformat->video_codec); |
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if (!codec) throw std::runtime_error("Video codec not found"); |
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out->enc = avcodec_alloc_context3(codec); |
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if (!out->enc) throw std::runtime_error("Unable to allocate video context"); |
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int fps = settings::settings().value("recording/framerate", 30).toInt(); |
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out->enc->codec_id = codec->id; |
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out->enc->codec = codec; |
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out->enc->bit_rate = OR_DEF(settings, bitrate, 400000); |
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out->enc->width = res.width() % 2 ? res.width() - 1 : res.width(); |
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out->enc->height = res.height() % 2 ? res.height() - 1 : res.height(); |
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size = QSize(out->enc->width, out->enc->height); |
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out->st->time_base = { 1, fps }; |
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out->enc->time_base = out->st->time_base; |
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out->enc->gop_size = OR_DEF(settings, gopSize, 12); |
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out->enc->pix_fmt = AV_PIX_FMT_YUV420P; // blaze it
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AVDictionary *dict = NULL; |
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if (out->enc->codec_id == AV_CODEC_ID_GIF) |
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out->enc->pix_fmt = AV_PIX_FMT_RGB8; |
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else if (out->enc->codec_id == AV_CODEC_ID_H264 || out->enc->codec_id == AV_CODEC_ID_H265) { |
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av_dict_set(&dict, "preset", settings ? settings->h264Profile.toLocal8Bit().constData() : "medium", 0); |
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av_dict_set_int(&dict, "crf", OR_DEF(settings, h264Crf, 12), 0); |
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} else if (out->enc->codec_id == AV_CODEC_ID_VP8 || out->enc->codec_id == AV_CODEC_ID_VP9) |
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av_dict_set_int(&dict, "lossless", OR_DEF(settings, vp9Lossless, false), 0); |
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ret = avcodec_open2(out->enc, codec, &dict); |
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av_dict_free(&dict); |
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if (ret < 0) throwAVErr(ret, "codec open"); |
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if (codec->capabilities & AV_CODEC_CAP_DR1) avcodec_align_dimensions(out->enc, &out->enc->width, &out->enc->height); |
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ret = avcodec_parameters_from_context(out->st->codecpar, out->enc); |
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if (ret < 0) throwAVErr(ret, "stream opt copy"); |
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// Frames
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out->frame = av_frame_alloc(); |
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if (!out->frame) { |
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throw std::runtime_error("frame alloc"); |
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} |
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out->frame->format = out->enc->pix_fmt; |
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out->frame->width = out->enc->width; |
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out->frame->height = out->enc->height; |
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ret = av_frame_get_buffer(out->frame, 32); |
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if (ret < 0) throwAVErr(ret, "frame buffer alloc"); |
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// Writer
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ret = avio_open(&fc->pb, targetFile.toLocal8Bit().constData(), AVIO_FLAG_WRITE); |
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if (ret < 0) throwAVErr(ret, "writer open"); |
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ret = avformat_write_header(fc, NULL); |
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if (ret < 0) throwAVErr(ret, "write header"); |
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success = true; |
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} |
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void Encoder::setFrameRGB(QImage img) { |
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uint8_t *rgb = (uint8_t *)img.bits(); |
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int ret = av_frame_make_writable(out->frame); |
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if (ret < 0) throwAVErr(ret, "setFrameRGB"); |
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int lineSize[1] = { img.bytesPerLine() }; |
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out->sws = sws_getCachedContext(out->sws, out->enc->width, out->enc->height, AV_PIX_FMT_RGB24, out->enc->width, |
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out->enc->height, (AVPixelFormat)out->frame->format, 0, 0, 0, 0); |
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sws_scale(out->sws, (const uint8_t *const *)&rgb, lineSize, 0, out->enc->height, out->frame->data, out->frame->linesize); |
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out->frame->pts = out->nextPts++; |
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} |
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Encoder::~Encoder() { |
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end(); |
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} |
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bool Encoder::addFrame(QImage frm) { |
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if (!success) return false; |
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if (frm.size() != size) frm = frm.copy(QRect(QPoint(0, 0), size)); |
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if (frm.format() != QImage::Format_RGB888) frm = frm.convertToFormat(QImage::Format_RGB888); |
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setFrameRGB(frm); |
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AVPacket pkt; |
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pkt.size = 0; |
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pkt.data = NULL; |
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av_init_packet(&pkt); |
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int ret = avcodec_send_frame(out->enc, out->frame); |
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if (ret == AVERROR(EAGAIN)) { |
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do { |
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ret = avcodec_receive_packet(out->enc, &pkt); |
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if (ret < 0) { |
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if (ret != AVERROR(EAGAIN)) |
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throwAVErr(ret, "receive packet"); |
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else |
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break; |
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} |
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av_packet_rescale_ts(&pkt, out->enc->time_base, out->st->time_base); |
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pkt.stream_index = out->st->index; |
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ret = av_interleaved_write_frame(fc, &pkt); |
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} while (ret >= 0); |
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if (ret < 0 && ret != AVERROR(EAGAIN)) { |
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av_packet_unref(&pkt); |
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throwAVErr(ret, "send frame"); |
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} |
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} |
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av_packet_unref(&pkt); |
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if (ret < 0 && ret != AVERROR(EAGAIN)) throwAVErr(ret, "send frame"); |
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return true; |
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} |
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bool Encoder::isRunning() { |
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return success; |
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} |
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bool Encoder::end() { |
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if (ended) return false; |
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ended = true; |
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if (!success) { |
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goto cleanup; |
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} |
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avcodec_send_frame(out->enc, NULL); |
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int ret; |
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AVPacket pkt; |
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pkt.size = 0; |
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pkt.data = NULL; |
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av_init_packet(&pkt); |
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do { |
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ret = avcodec_receive_packet(out->enc, &pkt); |
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if (ret < 0) break; |
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av_packet_rescale_ts(&pkt, out->enc->time_base, out->st->time_base); |
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pkt.stream_index = out->st->index; |
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av_interleaved_write_frame(fc, &pkt); |
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} while (ret >= 0); |
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av_write_trailer(fc); |
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cleanup: |
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avcodec_free_context(&out->enc); |
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av_frame_free(&out->frame); |
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sws_freeContext(out->sws); |
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delete out; |
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if (!(fc->oformat->flags & AVFMT_NOFILE)) //
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avio_closep(&fc->pb); |
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avformat_free_context(fc); |
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return success; |
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} |
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