[vlmc-devel] IProducer

[Yikai Lu]

vlmc | branch: medialibrary | Yikai Lu <luyikei.qmltu at gmail.com> | Sun Jun 12 00:12:58 2016 +0900| [8f7acddda37b69eb24605c56c9c3e75a3a453533] | committer: Yikai Lu

IProducer

> https://code.videolan.org/videolan/vlmc/commit/8f7acddda37b69eb24605c56c9c3e75a3a453533
---

 src/Backend/IProducer.h | 100 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/CMakeLists.txt      |   1 +
 2 files changed, 101 insertions(+)

diff --git a/src/Backend/IProducer.h b/src/Backend/IProducer.h
new file mode 100644
index 0000000..408cee2
--- /dev/null
+++ b/src/Backend/IProducer.h
@@ -0,0 +1,100 @@
+/*****************************************************************************
+ * IProducer.h: Defines an interface to produce frames
+ *****************************************************************************
+ * Copyright (C) 2008-2016 VideoLAN
+ *
+ * Authors: Yikei Lu <luyikei.qmltu at gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef IPRODUCER_H
+#define IPRODUCER_H
+
+#include <cstdint>
+#include "Backend/IService.h"
+
+namespace Backend
+{
+    class IProducerEventCb
+    {
+    public:
+        virtual ~IProducerEventCb() = default;
+        virtual void    onPaused() = 0;
+        virtual void    onPlaying() = 0;
+        virtual void    onEndReached() = 0;
+        virtual void    onPositionChanged( int64_t ) = 0;
+        virtual void    onLengthChanged( int64_t ) = 0;
+    };
+
+    class IProducer : virtual public IService
+    {
+    public:
+        enum EndType
+        {
+            EndOfMedia = -1,
+            EndOfParent = -2
+        };
+
+        virtual ~IProducer() = default;
+        virtual void            setCallback( IProducerEventCb* callback ) = 0;
+
+        virtual const char*     path() const = 0;
+        virtual int64_t         begin() const = 0;
+        virtual int64_t         end() const = 0;
+        virtual void            setBegin( int64_t begin ) = 0;
+        virtual void            setEnd( int64_t end ) = 0;
+        virtual void            setBoundaries( int64_t begin, int64_t end ) = 0;
+
+        // Absolute position in frames
+        virtual IProducer*      cut( int64_t begin  = 0, int64_t end  = EndOfMedia ) = 0;
+        virtual bool            isCut( ) const = 0 ;
+
+        virtual bool            sameClip( IProducer& that ) const = 0;
+        virtual bool            runsInto( IProducer& that ) const = 0;
+
+        // The playable (based on begin and end points) duration
+        virtual int64_t         playableLength() const = 0;
+
+        // The duration of the producer regardless of begin and end points.
+        virtual int64_t         length() const = 0;
+        virtual const char*     lengthTime() const = 0;
+
+        // The position in frame relative to its beginning
+        virtual int64_t         position() const = 0;
+        virtual void            setPosition( int64_t position ) = 0;
+
+        // The absolete position in frame
+        virtual int64_t         frame() const = 0;
+
+        virtual double          fps() const = 0;
+        virtual int             width() const = 0;
+        virtual int             height() const = 0;
+        virtual bool            hasVideo() const = 0;
+        virtual int             nbVideoTracks() const = 0;
+        virtual bool            hasAudio() const = 0;
+        virtual int             nbAudioTracks() const = 0;
+
+        virtual void            playPause() = 0;
+        virtual void            setPause( bool isPaused ) = 0;
+        virtual bool            isPaused() const = 0;
+        virtual void            nextFrame() = 0;
+        virtual void            previousFrame() = 0;
+
+        virtual bool            isBlank() const = 0;
+    };
+}
+
+#endif // IPRODUCER_H
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a73f683..33795b3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -60,6 +60,7 @@ SET(VLMC_SRCS
     Backend/IBackend.h
     Backend/IService.h
     Backend/IConsumer.h
+    Backend/IProducer.h
     Backend/VLC/VLCBackend.cpp
     Backend/VLC/VLCSourceRenderer.cpp
     Backend/VLC/VLCVmemRenderer.cpp