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commit 18b4338361
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--- a/project/fm_viewer/fav/VideoEncoder.h
+++ b/project/fm_viewer/fav/VideoEncoder.h
@@ -0,0 +1,120 @@
+/******************************************************************************
+    QtAV:  Multimedia framework based on Qt and FFmpeg
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
+
+*   This file is part of QtAV (from 2015)
+
+    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_VIDEOENCODER_H
+#define QTAV_VIDEOENCODER_H
+
+#define REMOVE_VIDEO_ENCODER 1
+#if !(REMOVE_VIDEO_ENCODER)
+
+#include "AVEncoder.h"
+#include "VideoFrame.h"
+#include <QtCore/QStringList>
+
+namespace FAV {
+typedef int VideoEncoderId;
+class VideoEncoderPrivate;
+class Q_AV_EXPORT VideoEncoder : public AVEncoder
+{
+    Q_OBJECT
+    Q_PROPERTY(int width READ width WRITE setWidth NOTIFY widthChanged)
+    Q_PROPERTY(int height READ height WRITE setHeight NOTIFY heightChanged)
+    Q_PROPERTY(qreal frameRate READ frameRate WRITE setFrameRate NOTIFY frameRateChanged)
+    Q_PROPERTY(FAV::VideoFormat::PixelFormat pixelFormat READ pixelFormat WRITE setPixelFormat NOTIFY pixelFormatChanged)
+    Q_DISABLE_COPY(VideoEncoder)
+    DPTR_DECLARE_PRIVATE(VideoEncoder)
+public:
+    static QStringList supportedCodecs();
+    static VideoEncoder* create(VideoEncoderId id);
+    /*!
+     * \brief create
+     * create an encoder from registered names
+     * \param name can be "FFmpeg". FFmpeg encoder will be created for empty name
+     * \return 0 if not registered
+     */
+    static VideoEncoder* create(const char* name = "FFmpeg");
+    virtual VideoEncoderId id() const = 0;
+    QString name() const Q_DECL_OVERRIDE; //name from factory
+    /*!
+     * \brief encode
+     * encode a video frame to a Packet
+     * \param frame pass an invalid frame to get delayed frames
+     * \return
+     */
+    virtual bool encode(const VideoFrame& frame = VideoFrame()) = 0;
+    /// output parameters
+    /*!
+     * \brief setWidth
+     * set the encoded video width. The same as input frame size if value <= 0
+     */
+    void setWidth(int value);
+    int width() const;
+    void setHeight(int value);
+    int height() const;
+    /// TODO: check avctx->supported_framerates. use frame_rate_used
+    /*!
+     * \brief setFrameRate
+     * If frame rate is not set, frameRate() returns -1, but internally the default frame rate 25 will be used
+     * \param value
+     */
+    void setFrameRate(qreal value);
+    qreal frameRate() const;
+    static qreal defaultFrameRate() { return 25;}
+    /*!
+     * \brief setPixelFormat
+     * If not set or set to an unsupported format, a supported format will be used and pixelFormat() will be that format after open()
+     */
+    void setPixelFormat(const VideoFormat::PixelFormat format);
+    /*!
+     * \brief pixelFormat
+     * \return user requested format. may be different with actually used format
+     */
+    VideoFormat::PixelFormat pixelFormat() const;
+    // TODO: supportedPixelFormats() const;
+Q_SIGNALS:
+    void widthChanged();
+    void heightChanged();
+    void frameRateChanged();
+    void pixelFormatChanged();
+
+public:
+    template<class C> static bool Register(VideoEncoderId id, const char* name) { return Register(id, create<C>, name);}
+    /*!
+     * \brief next
+     * \param id NULL to get the first id address
+     * \return address of id or NULL if not found/end
+     */
+    static VideoEncoderId* next(VideoEncoderId* id = 0);
+    static const char* name(VideoEncoderId id);
+    static VideoEncoderId id(const char* name);
+private:
+    template<class C> static VideoEncoder* create() { return new C();}
+    typedef VideoEncoder* (*VideoEncoderCreator)();
+    static bool Register(VideoEncoderId id, VideoEncoderCreator, const char *name);
+protected:
+    VideoEncoder(VideoEncoderPrivate& d);
+private:
+    VideoEncoder();
+};
+
+} //namespace FAV
+#endif // QTAV_VIDEOENCODER_H
+#endif // #if !(REMOVE_VIDEO_ENCODER)