SubtitleProvider interface

Originally committed to SVN as r362.

core/Makefile.am

@@ -75,6 +75,7 @@ aegisub_SOURCES = about.cpp \
 	subtitle_format_prs.cpp \
 	subtitle_format_srt.cpp \
 	subtitle_format_txt.cpp \
+	subtitle_provider.cpp \
 	text_file_reader.cpp \
 	text_file_writer.cpp \
 	timeedit_ctrl.cpp \

core/subtitle_provider.cpp

@@ -1,4 +1,4 @@
-// Copyright (c) 2006, Rodrigo Braz Monteiro, Fredrik Mellbin
+// Copyright (c) 2006, David Lamparter
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -34,24 +34,20 @@
 //
 
 
-#pragma once
+///////////
+// Headers
+#include "subtitle_provider.h"
 
 
-//////////////
+std::map<wxString, SubtitleProvider::Class *> SubtitleProvider::Class::classes;
-// Prototypes
-class AegisubVideoFrame;
-class AssFile;
 
+SubtitleProvider::Class::Class(wxString name)
+{
+	classes.insert(std::make_pair(name, this));
+}
 
-////////////////////////////
+SubtitleProvider *SubtitleProvider::Class::GetProvider(wxString provider_name, AssFile *subs)
-// Video Provider interface
+{
-class SubtitleRasterizer {
+	return classes[provider_name]->Get(subs);
-public:
+}
-	virtual ~SubtitleRasterizer() {}
 
-	wxString GetFromDisk(AssFile *subs);
-
-	virtual void Load(AssFile *subs)=0;
-	virtual void Close() {}
-	virtual void RenderFrame(AegisubVideoFrame *frame,int ms)=0;
-};

core/subtitle_provider.h

@@ -0,0 +1,86 @@
+// Copyright (c) 2006, David Lamparter
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//   * Redistributions of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//   * Redistributions in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//   * Neither the name of the Aegisub Group nor the names of its contributors
+//     may be used to endorse or promote products derived from this software
+//     without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------------
+//
+// AEGISUB
+//
+// Website: http://aegisub.cellosoft.com
+// Contact: mailto:zeratul@cellosoft.com
+//
+
+
+#pragma once
+
+
+#include <map>
+
+
+class VideoProvider;
+class AssFile;
+
+/////////////////////////////////////////
+// Subtitle provider (renderer) interface
+class SubtitleProvider {
+public:
+	// Video overlay interface. Renderers MAY implement it,
+	// but do not need to. VideoProvider::SetOverlay takes it.
+	class Overlay {
+	public:
+		virtual void SetParams(int width, int height) = 0;
+		virtual void Render(wxImage &frame, int ms) = 0;
+		virtual void Unbind() = 0;	// Called when VideoProvider is destroyed
+		virtual ~Overlay() { };
+	};
+
+	// Renderer Class. Manages the different types of renderers.
+	// Derivate a class off it, override its Get method and its constructor,
+	// and create one single instance of it for your renderer,
+	// as a static element in your SubtitleProvider derivated class. Example:
+	//	class MyFancyRenderer : public SubtitleProvider {
+	//		class MyClass : public Class { public:
+	//			MyClass() : Class("FancyRenderer") { };
+	//			virtual SubtitleProvider *Get(AssFile *subs) { return new MyFancyRenderer(subs); };
+	//		};
+	//		static MyClass me;
+	//	};
+	class Class {
+	private:
+		static std::map<wxString, SubtitleProvider::Class *> classes;
+
+	public:
+		Class(wxString name);
+		virtual SubtitleProvider *Get(AssFile *subs) = 0;
+		virtual ~Class() {};
+
+		static SubtitleProvider *GetProvider(wxString provider_name, AssFile *subs);
+	};
+
+
+	virtual ~SubtitleProvider() { };
+	virtual void Bind(VideoProvider *vpro) = 0;
+};

core/video_provider.h

@@ -37,9 +37,7 @@
 #pragma once
 
 
-//////////////
+#include "subtitle_provider.h"
-// Prototypes
-class SubtitleRasterizer;
 
 
 ////////////////////////////
@@ -49,6 +47,7 @@ public:
 	virtual ~VideoProvider() {}
 
 	virtual void RefreshSubtitles()=0;		// Refresh subtitles display
+	virtual void AttachOverlay(SubtitleProvider::Overlay *overlay) = 0;
 
 	virtual wxBitmap GetFrame(int n)=0;						// Get frame as bitmap
 	virtual void GetFloatFrame(float* Buffer, int n)=0;		// Get frame as float (for FexTracker)
@@ -66,7 +65,5 @@ public:
 	virtual int GetSourceWidth()=0;			// Returns the original source width in pixels
 	virtual int GetSourceHeight()=0;		// Returns the original source height in pixels
 
-	SubtitleRasterizer *subsRaster;
-
 	static VideoProvider *GetProvider(wxString video,wxString subtitles);
 };