filters/resize.h
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|---|---|---|---|
| 1 | // Avisynth v2.5. Copyright 2002 Ben Rudiak-Gould et al. | ||
| 2 | // http://avisynth.nl | ||
| 3 | |||
| 4 | // This program is free software; you can redistribute it and/or modify | ||
| 5 | // it under the terms of the GNU General Public License as published by | ||
| 6 | // the Free Software Foundation; either version 2 of the License, or | ||
| 7 | // (at your option) any later version. | ||
| 8 | // | ||
| 9 | // This program is distributed in the hope that it will be useful, | ||
| 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 12 | // GNU General Public License for more details. | ||
| 13 | // | ||
| 14 | // You should have received a copy of the GNU General Public License | ||
| 15 | // along with this program; if not, write to the Free Software | ||
| 16 | // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit | ||
| 17 | // http://www.gnu.org/copyleft/gpl.html . | ||
| 18 | // | ||
| 19 | // Linking Avisynth statically or dynamically with other modules is making a | ||
| 20 | // combined work based on Avisynth. Thus, the terms and conditions of the GNU | ||
| 21 | // General Public License cover the whole combination. | ||
| 22 | // | ||
| 23 | // As a special exception, the copyright holders of Avisynth give you | ||
| 24 | // permission to link Avisynth with independent modules that communicate with | ||
| 25 | // Avisynth solely through the interfaces defined in avisynth.h, regardless of the license | ||
| 26 | // terms of these independent modules, and to copy and distribute the | ||
| 27 | // resulting combined work under terms of your choice, provided that | ||
| 28 | // every copy of the combined work is accompanied by a complete copy of | ||
| 29 | // the source code of Avisynth (the version of Avisynth used to produce the | ||
| 30 | // combined work), being distributed under the terms of the GNU General | ||
| 31 | // Public License plus this exception. An independent module is a module | ||
| 32 | // which is not derived from or based on Avisynth, such as 3rd-party filters, | ||
| 33 | // import and export plugins, or graphical user interfaces. | ||
| 34 | |||
| 35 | #ifndef __Resize_H__ | ||
| 36 | #define __Resize_H__ | ||
| 37 | |||
| 38 | #include <avisynth.h> | ||
| 39 | |||
| 40 | /******************************************************************** | ||
| 41 | ********************************************************************/ | ||
| 42 | |||
| 43 | class VerticalReduceBy2 : public GenericVideoFilter | ||
| 44 | /** | ||
| 45 | * This class exposes a video filter for reducing a video's height by half. Input is one clip, | ||
| 46 | * output is another. | ||
| 47 | **/ | ||
| 48 | { | ||
| 49 | public: | ||
| 50 | VerticalReduceBy2(PClip _child, IScriptEnvironment* env); | ||
| 51 | PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* env) override; | ||
| 52 | |||
| 53 | ✗ | int __stdcall SetCacheHints(int cachehints, int frame_range) override { | |
| 54 | AVS_UNUSED(frame_range); | ||
| 55 | ✗ | return cachehints == CACHE_GET_MTMODE ? MT_NICE_FILTER : 0; | |
| 56 | } | ||
| 57 | |||
| 58 | ✗ | static AVSValue __cdecl Create(AVSValue args, void*, IScriptEnvironment* env) { | |
| 59 | ✗ | return new VerticalReduceBy2(args[0].AsClip(),env); | |
| 60 | } | ||
| 61 | |||
| 62 | private: | ||
| 63 | int original_height; | ||
| 64 | }; | ||
| 65 | |||
| 66 | |||
| 67 | class HorizontalReduceBy2 : public GenericVideoFilter | ||
| 68 | /** | ||
| 69 | * This class exposes a video filter for reducing a video's width by half. Input is one clip, | ||
| 70 | * output is another. | ||
| 71 | **/ | ||
| 72 | { | ||
| 73 | public: | ||
| 74 | HorizontalReduceBy2(PClip _child, IScriptEnvironment* env); | ||
| 75 | PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* env) override; | ||
| 76 | |||
| 77 | ✗ | int __stdcall SetCacheHints(int cachehints, int frame_range) override { | |
| 78 | AVS_UNUSED(frame_range); | ||
| 79 | ✗ | return cachehints == CACHE_GET_MTMODE ? MT_NICE_FILTER : 0; | |
| 80 | } | ||
| 81 | |||
| 82 | ✗ | static AVSValue __cdecl Create(AVSValue args, void*, IScriptEnvironment* env) { | |
| 83 | ✗ | return new HorizontalReduceBy2(args[0].AsClip(), env); | |
| 84 | } | ||
| 85 | |||
| 86 | private: | ||
| 87 | int source_width; | ||
| 88 | int pixelsize; | ||
| 89 | }; | ||
| 90 | |||
| 91 | |||
| 92 | static AVSValue __cdecl Create_ReduceBy2(AVSValue args, void*, IScriptEnvironment* env); | ||
| 93 | |||
| 94 | |||
| 95 | #endif // __Resize_H__ | ||
| 96 |