forked from mia/Aegisub
92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
// Copyright (c) 2006-2008, Rodrigo Braz Monteiro, Fredrik Mellbin
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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#pragma once
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//////////
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// Headers
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#include "video_frame.h"
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#include "aegisub.h"
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//////////////
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// Prototypes
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class SubtitlesProvider;
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////////////////////////////
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// Video Provider interface
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class VideoProvider {
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public:
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// Virtual destructor
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virtual ~VideoProvider() {}
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// Override this method to actually get frames
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virtual const AegiVideoFrame GetFrame(int n, int formatMask)=0;
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// Override the following methods to get video information:
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virtual int GetPosition()=0; // Get the number of the last frame loaded
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virtual int GetFrameCount()=0; // Get total number of frames
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virtual int GetWidth()=0; // Returns the video width in pixels
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virtual int GetHeight()=0; // Returns the video height in pixels
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virtual double GetFPS()=0; // Get framerate in frames per second
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// Use this to set any post-loading warnings, such as "being loaded with unreliable seeking"
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virtual Aegisub::String GetWarning() { return L""; }
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// Name of decoder, e.g. "Avisynth/FFMPegSource"
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virtual Aegisub::String GetDecoderName() { return L"Unknown"; }
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// How many frames does this provider wants that Aegisub caches? Set to 0 if it doesn't require caching.
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virtual int GetDesiredCacheSize() { return 0; }
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// For providers that are natively time-based (e.g. DirectShow)
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virtual bool IsNativelyByFrames() { return true; }
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virtual void OverrideFrameTimeList(Aegisub::IntArray list) {} // Override the list with the provided one, for VFR handling
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// If this video provider has a built-in subtitles provider, return that
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virtual SubtitlesProvider *GetAsSubtitlesProvider() { return NULL; }
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};
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///////////
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// Factory
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class VideoProviderFactory {
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public:
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virtual ~VideoProviderFactory() {}
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virtual VideoProvider *CreateProvider(Aegisub::String video,double fps=0.0)=0;
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};
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