diff options
Diffstat (limited to 'libvo/vo_mga.c')
| -rw-r--r-- | libvo/vo_mga.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/libvo/vo_mga.c b/libvo/vo_mga.c new file mode 100644 index 0000000000..d50caab623 --- /dev/null +++ b/libvo/vo_mga.c @@ -0,0 +1,127 @@ + +//#define memcpy(a,b,c) + +/* + * video_out_mga.c + * + * Copyright (C) Aaron Holtzman - Aug 1999 + * + * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. + * + * mpeg2dec 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, or (at your option) + * any later version. + * + * mpeg2dec 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 GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "config.h" +#include "video_out.h" +#include "video_out_internal.h" + +LIBVO_EXTERN(mga) + +#include <sys/ioctl.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/mman.h> + +#include "drivers/mga_vid.h" + +static vo_info_t vo_info = +{ + "Matrox G200/G400 overlay (/dev/mga_vid)", + "mga", + "Aaron Holtzman <aholtzma@ess.engr.uvic.ca>", + "" +}; + +static mga_vid_config_t mga_vid_config; +static uint8_t *vid_data, *frame0, *frame1; +static int next_frame = 0; +static int f; + +#include "mga_common.c" + +static uint32_t +init(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format) +{ + char *frame_mem; + uint32_t frame_size; + + f = open("/dev/mga_vid",O_RDWR); + + if(f == -1) + { + fprintf(stderr,"Couldn't open /dev/mga_vid\n"); + return(-1); + } + + switch(format){ + case IMGFMT_YV12: + mga_vid_config.format=MGA_VID_FORMAT_YV12; break; + case IMGFMT_YUY2: + mga_vid_config.format=MGA_VID_FORMAT_YUY2; break; + default: + fprintf(stderr,"mga: invalid output format %0X\n",format); + return (-1); + } + + mga_vid_config.src_width = width; + mga_vid_config.src_height= height; +// mga_vid_config.dest_width = width; +// mga_vid_config.dest_height= height; + mga_vid_config.dest_width = d_width; +// (width<704)?704:width; // HACK + mga_vid_config.dest_height= d_height; +// (height<576)?576:height; // HACK + mga_vid_config.x_org= 0; // (720-mga_vid_config.dest_width)/2; + mga_vid_config.y_org= 0; // (576-mga_vid_config.dest_height)/2; + + if (ioctl(f,MGA_VID_CONFIG,&mga_vid_config)) + { + perror("Error in mga_vid_config ioctl"); + } + ioctl(f,MGA_VID_ON,0); + + frame_size = ((width + 31) & ~31) * height + (((width + 31) & ~31) * height) / 2; + frame_mem = (char*)mmap(0,frame_size*2,PROT_WRITE,MAP_SHARED,f,0); + frame0 = frame_mem; + frame1 = frame_mem + frame_size; + vid_data = frame0; + next_frame = 0; + + //clear the buffer + memset(frame_mem,0x80,frame_size*2); + + return 0; +} + +static const vo_info_t* +get_info(void) +{ + return &vo_info; +} + +static void +uninit(void) +{ + ioctl( f,MGA_VID_OFF,0 ); +printf("vo: uninit!\n"); +} + + + |