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2026-02-21 17:11:31 +09:00
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--- a/project/fm_viewer/fav/AVDecoder.h
+++ b/project/fm_viewer/fav/AVDecoder.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 QAV_DECODER_H
+#define QAV_DECODER_H
+
+#include "AVError.h"
+#include <QtCore/QVariant>
+#include <QtCore/QObject>
+
+namespace FAV {
+
+class Packet;
+class AVDecoderPrivate;
+class Q_AV_EXPORT AVDecoder : public QObject
+{
+    Q_OBJECT
+    DPTR_DECLARE_PRIVATE(AVDecoder)
+    //Q_PROPERTY(QString description READ description NOTIFY descriptionChanged)
+public:
+    virtual ~AVDecoder();
+    virtual QString name() const;
+    virtual QString description() const;
+    /*!
+     * default is open FFmpeg codec context
+     * codec config must be done before open
+     * NOTE: open() and close() are not thread safe. You'd better call them in the same thread.
+     */
+    virtual bool open();
+    virtual bool close();
+    bool isOpen() const;
+    virtual void flush();
+    void setCodecContext(void* codecCtx); //protected
+    void* codecContext() const;
+    /*not available if AVCodecContext == 0*/
+    bool isAvailable() const;
+#if (PLAY_SYNC_FIX2)
+    virtual bool send(const Packet* packet) = 0;
+    virtual bool receive() = 0;
+#endif // PLAY_SYNC_FIX2
+    virtual bool decode(const Packet& packet) = 0;
+
+
+    int undecodedSize() const; //TODO: remove. always decode whole input data completely
+
+    // avcodec_open2
+    /*!
+     * \brief setOptions
+     * 1. If has key "avcodec", it's value (suboption, a hash or map) will be used to set AVCodecContext use av_opt_set and av_dict_set. A value of hash type is ignored.
+     * we can ignore the flags used in av_dict_xxx because we can use hash api.
+     * empty value does nothing to current context if it is open, but will clear AVDictionary in the next open.
+     * AVDictionary is used in avcodec_open2() and will not change unless user call setOptions().
+     * 2. Set QObject properties for AVDecoder. Use AVDecoder::name() or lower case as a key to set properties. If key not found, assume key is "avcodec"
+     * 3. If no ket AVDecoder::name() found in the option, set key-value pairs as QObject property-value pairs.
+     * \param dict
+     * example:
+     *  "avcodec": {"vismv":"pf"}, "vaapi":{"display":"DRM"}, "copyMode": "ZeroCopy"
+     *  means set avcodec context option vismv=>pf, VA-API display (qt property) to DRM when using VA-API, set copyMode (GPU decoders) property to ZeroCopy
+     */
+    void setOptions(const QVariantHash &dict);
+    QVariantHash options() const;
+
+Q_SIGNALS:
+    void error(const FAV::AVError& e); //explictly use FAV::AVError in connection for Qt4 syntax
+    void descriptionChanged();
+protected:
+    AVDecoder(AVDecoderPrivate& d);
+    DPTR_DECLARE(AVDecoder)
+    // force a codec. only used by avcodec sw decoders. TODO: move to public? profile set?
+    void setCodecName(const QString& name);
+    QString codecName() const;
+    virtual void codecNameChanged() {}//signals can not be decared virtual (winrt)
+private:
+    Q_DISABLE_COPY(AVDecoder)
+    AVDecoder(); // base class, not direct create. only final class has is enough
+};
+
+} //namespace FAV
+#endif // QAV_DECODER_H