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2026-02-21 17:11:31 +09:00
commit 18b4338361
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--- a/project/fm_viewer/fav/VideoRenderer_p.h
+++ b/project/fm_viewer/fav/VideoRenderer_p.h
@@ -0,0 +1,128 @@
+/******************************************************************************
+    QtAV:  Media play library based on Qt and FFmpeg
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
+
+*   This file is part of QtAV
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+******************************************************************************/
+
+#ifndef QAV_VIDEORENDERER_P_H
+#define QAV_VIDEORENDERER_P_H
+
+#include "AVOutput_p.h"
+#include "VideoRenderer.h"
+#include <QtCore/QMutex>
+#include <QtCore/QRect>
+#include "VideoFrame.h"
+#include <QtGui/QColor>
+
+/*TODO:
+ * Region of Interest(ROI)
+ * use matrix to compute out rect, mapped point etc
+ */
+QT_BEGIN_NAMESPACE
+class QObject;
+class QWidget;
+QT_END_NAMESPACE
+namespace FAV {
+class Filter;
+class Q_AV_PRIVATE_EXPORT VideoRendererPrivate : public AVOutputPrivate
+{
+public:
+    VideoRendererPrivate():
+        AVOutputPrivate()
+      , update_background(true)
+      , renderer_width(480)
+      , renderer_height(320)
+      , source_aspect_ratio(0)
+      , src_width(0)
+      , src_height(0)
+      , aspect_ratio_changed(true) //to set the initial parameters
+      , out_aspect_ratio_mode(VideoRenderer::VideoAspectRatio)
+      , out_aspect_ratio(0)
+      , quality(VideoRenderer::QualityBest)
+      , orientation(0)
+      , preferred_format(VideoFormat::Format_RGB32)
+      , force_preferred(false)
+      , brightness(0)
+      , contrast(0)
+      , hue(0)
+      , saturation(0)
+      , bg_color(0, 0, 0)
+    {
+        //conv.setInFormat(PIX_FMT_YUV420P);
+        //conv.setOutFormat(PIX_FMT_BGR32); //TODO: why not RGB32?
+    }
+    virtual ~VideoRendererPrivate(){
+    }
+
+    // return true if video rect changed
+    bool computeOutParameters(qreal outAspectRatio) {
+        qreal rendererAspectRatio = qreal(renderer_width)/qreal(renderer_height);
+        const QRect out_rect0(out_rect);
+        if (out_aspect_ratio_mode == VideoRenderer::RendererAspectRatio) {
+            out_aspect_ratio = rendererAspectRatio;
+            out_rect = QRect(0, 0, renderer_width, renderer_height);
+            return out_rect0 != out_rect;
+        }
+        // dar: displayed aspect ratio in video renderer orientation
+        const qreal dar = (orientation % 180) ? 1.0/outAspectRatio : outAspectRatio;
+        //qDebug("out rect: %f %dx%d ==>", out_aspect_ratio, out_rect.width(), out_rect.height());
+        if (rendererAspectRatio >= dar) { //equals to original video aspect ratio here, also equals to out ratio
+            //renderer is too wide, use renderer's height, horizonal align center
+            const int h = renderer_height;
+            const int w = qRound(dar * qreal(h));
+            out_rect = QRect((renderer_width - w)/2, 0, w, h);
+        } else if (rendererAspectRatio < dar) {
+            //renderer is too high, use renderer's width
+            const int w = renderer_width;
+            const int h = qRound(qreal(w)/dar);
+            out_rect = QRect(0, (renderer_height - h)/2, w, h);
+        }
+        out_aspect_ratio = outAspectRatio;
+        //qDebug("%f %dx%d <<<<<<<<", out_aspect_ratio, out_rect.width(), out_rect.height());
+        return out_rect0 != out_rect;
+    }
+    virtual void setupQuality() {}
+
+    //draw background when necessary, for example, renderer is resized. Then set to false
+    bool update_background;
+    // width, height: the renderer's size. i.e. size of video frame with the value with borders
+    //TODO: rename to renderer_width/height
+    int renderer_width, renderer_height;
+    qreal source_aspect_ratio;
+    int src_width, src_height; //TODO: in_xxx
+    QMutex img_mutex;
+    //for both source, out aspect ratio. because source change may result in out change if mode is VideoAspectRatio
+    bool aspect_ratio_changed;
+    VideoRenderer::OutAspectRatioMode out_aspect_ratio_mode;
+    qreal out_aspect_ratio;
+    VideoRenderer::Quality quality;
+    //out_rect: the displayed video frame out_rect in the renderer
+    QRect out_rect; //TODO: out_out_rect
+    QRectF roi;
+    int orientation;
+
+    VideoFrame video_frame;
+    VideoFormat::PixelFormat preferred_format;
+    bool force_preferred;
+
+    qreal brightness, contrast, hue, saturation;
+    QColor bg_color;
+};
+
+} //namespace FAV
+#endif // QAV_VIDEORENDERER_P_H