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project/fm_viewer/fav/VideoDecoderFFmpegBase.h

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+/******************************************************************************
+    QtAV:  Multimedia framework based on Qt and FFmpeg
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
+
+*   This file is part of QtAV (from 2014)
+
+    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 QTAV_VIDEODECODERFFMPEGBASE_H
+#define QTAV_VIDEODECODERFFMPEGBASE_H
+
+#include "VideoDecoder.h"
+#include "AVDecoder_p.h"
+#include "AVCompat.h"
+
+namespace FAV {
+
+class VideoDecoderFFmpegBasePrivate;
+class VideoDecoderFFmpegBase : public VideoDecoder
+{
+    Q_DISABLE_COPY(VideoDecoderFFmpegBase)
+    DPTR_DECLARE_PRIVATE(VideoDecoderFFmpegBase)
+public:
+#if (PLAY_SYNC_FIX2)
+    virtual bool send(const Packet* packet) Q_DECL_OVERRIDE;
+    virtual bool receive() Q_DECL_OVERRIDE;
+#endif // PLAY_SYNC_FIX2
+    virtual bool decode(const Packet& packet) Q_DECL_OVERRIDE;
+protected:
+    VideoDecoderFFmpegBase(VideoDecoderFFmpegBasePrivate &d);
+private:
+    VideoDecoderFFmpegBase(); //it's a base class
+};
+
+class VideoDecoderFFmpegBasePrivate : public VideoDecoderPrivate
+{
+public:
+    VideoDecoderFFmpegBasePrivate()
+        : VideoDecoderPrivate()
+        , frame(0)
+        , width(0)
+        , height(0)
+    {
+        avcodec_register_all();
+        frame = av_frame_alloc();
+    }
+    virtual ~VideoDecoderFFmpegBasePrivate() {
+        if (frame) {
+            av_frame_free(&frame);
+            frame = 0;
+        }
+    }
+    void updateColorDetails(VideoFrame* f);
+    qreal getDAR(AVFrame *f);
+
+    AVFrame *frame; //set once and not change
+    int width, height; //The current decoded frame size
+};
+
+} //namespace FAV
+
+#endif // QTAV_VIDEODECODERFFMPEGBASE_H