GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2006 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 00023 #ifndef INCLUDED_VIDEO_SDL_SINK_S_H 00024 #define INCLUDED_VIDEO_SDL_SINK_S_H 00025 00026 #include <video_sdl_api.h> 00027 #include <gr_sync_block.h> 00028 #include <string> 00029 #include <SDL.h> 00030 00031 /* fourcc (four character code) */ 00032 #define vid_fourcc(a,b,c,d) (((unsigned)(a)<<0) | ((unsigned)(b)<<8) | ((unsigned)(c)<<16) | ((unsigned)(d)<<24)) 00033 #define IMGFMT_YV12 vid_fourcc('Y','V','1','2') /* 12 YVU 4:2:0 */ 00034 00035 class video_sdl_sink_s; 00036 typedef boost::shared_ptr<video_sdl_sink_s> video_sdl_sink_s_sptr; 00037 00038 VIDEO_SDL_API video_sdl_sink_s_sptr 00039 video_sdl_make_sink_s (double framerate,int width=640, int height=480,unsigned int format=IMGFMT_YV12,int dst_width=-1,int dst_height=-1); 00040 00041 /*! 00042 * \brief video sink using SDL 00043 * 00044 * input signature is one, two or three streams of signed short. 00045 * One stream: stream is grey (Y) 00046 * two streems: first is grey (Y), second is alternating U and V 00047 * Three streams: first is grey (Y), second is U, third is V 00048 * Input samples must be in the range [0,255]. 00049 */ 00050 00051 class VIDEO_SDL_API video_sdl_sink_s : public gr_sync_block { 00052 friend VIDEO_SDL_API video_sdl_sink_s_sptr 00053 video_sdl_make_sink_s (double framerate,int width, int height,unsigned int format,int dst_width,int dst_height); 00054 00055 int d_chunk_size; 00056 00057 protected: 00058 video_sdl_sink_s (double framerate,int width, int height,unsigned int format, 00059 int dst_width,int dst_height); 00060 void copy_line_pixel_interleaved(unsigned char *dst_pixels_u,unsigned char *dst_pixels_v, 00061 const short * src_pixels,int src_width); 00062 void copy_line_line_interleaved(unsigned char *dst_pixels_u,unsigned char *dst_pixels_v, 00063 const short * src_pixels,int src_width); 00064 void copy_line_single_plane(unsigned char *dst_pixels,const short * src_pixels,int src_width); 00065 void copy_line_single_plane_dec2(unsigned char *dst_pixels,const short * src_pixels,int src_width); 00066 int copy_plane_to_surface (int plane,int noutput_items, 00067 const short * src_pixels); 00068 float d_framerate; 00069 int d_wanted_frametime_ms; 00070 int d_width; 00071 int d_height; 00072 int d_dst_width; 00073 int d_dst_height; 00074 int d_format; 00075 int d_current_line; 00076 SDL_Surface *d_screen; 00077 SDL_Overlay *d_image; 00078 SDL_Rect d_dst_rect; 00079 float d_avg_delay; 00080 unsigned int d_wanted_ticks; 00081 00082 00083 public: 00084 ~video_sdl_sink_s (); 00085 00086 int work (int noutput_items, 00087 gr_vector_const_void_star &input_items, 00088 gr_vector_void_star &output_items); 00089 }; 00090 00091 #endif /* INCLUDED_VIDEO_SDL_SINK_S_H */