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project/fm_viewer/fav/VideoDecoder.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
+
+    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_VIDEODECODER_H
+#define QTAV_VIDEODECODER_H
+
+#include "AVDecoder.h"
+#include "VideoFrame.h"
+#include <QtCore/QStringList>
+
+namespace FAV {
+typedef int VideoDecoderId;
+/*!
+    Useful properties.
+    A key is a string, a value can be int, bool or string. Both int and string are valid for enumerate
+    properties. Flag properties must use int if more than 1 value is used.
+    e.g. decoder->setProperty("display", 1) equals decoder->setProperty("display", "GLX")
+    setOptions() also applies the properties.
+    avcodec (also for VA-API, DXVA, VDA)
+      Use AVCodecContext options
+    CUDA
+      surfaces: 0 is auto
+      deinterlace: 0 "Weave", 1 "Bob", 2 "Adaptive"
+    VA-API
+      display: 0 "X11", 1 "GLX", 2 "DRM"
+    DXVA, VA-API
+      surfaces: 0 default
+    DXVA, VA-API, VDA:
+      sse4: bool
+    CedarV
+      neon: bool
+    FFmpeg
+      skip_loop_filter, skip_idct, skip_frame: -16 "None", 0: "Default", 8 "NoRef", 16 "Bidir", 32 "NoKey", 64 "All"
+      threads: int, 0 is auto
+      vismv(motion vector visualization): flag, 0 "NO", 1 "PF", 2 "BF", 4 "BB"
+ */
+
+class VideoDecoderPrivate;
+class Q_AV_EXPORT VideoDecoder : public AVDecoder
+{
+    Q_DISABLE_COPY(VideoDecoder)
+    DPTR_DECLARE_PRIVATE(VideoDecoder)
+public:
+    static QStringList supportedCodecs();
+    static VideoDecoder* create(VideoDecoderId id);
+    /*!
+     * \brief create
+     * create a decoder from registered name. FFmpeg decoder will be created for empty name
+     * \param name can be "FFmpeg", "CUDA", "VDA", "VAAPI", "DXVA", "Cedarv"
+     * \return 0 if not registered
+     */
+    static VideoDecoder* create(const char* name = "FFmpeg");
+    virtual VideoDecoderId id() const = 0;
+    QString name() const; //name from factory
+    virtual VideoFrame frame() = 0;
+public:
+    typedef int Id;
+    static QVector<VideoDecoderId> registered();
+    template<class C> static bool Register(VideoDecoderId 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 VideoDecoderId* next(VideoDecoderId* id = 0);
+    static const char* name(VideoDecoderId id);
+    static VideoDecoderId id(const char* name);
+private:
+    template<class C> static VideoDecoder* create() { return new C();}
+    typedef VideoDecoder* (*VideoDecoderCreator)();
+protected:
+    static bool Register(VideoDecoderId id, VideoDecoderCreator, const char *name);
+protected:
+    VideoDecoder(VideoDecoderPrivate& d);
+private:
+    VideoDecoder();
+};
+
+extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_FFmpeg;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_CUDA;
+#ifdef RM_USE_HW_DECODER
+extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_DXVA;
+#endif
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_D3D11;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_VAAPI;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_Cedarv;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_VDA;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_VideoToolbox;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_MediaCodec;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_MMAL;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_QSV;
+//extern Q_AV_EXPORT VideoDecoderId VideoDecoderId_CrystalHD;
+} //namespace FAV
+#endif // QTAV_VIDEODECODER_H