mirror of
https://github.com/mpv-player/mpv
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128 lines
3.0 KiB
C
128 lines
3.0 KiB
C
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//#define memcpy(a,b,c)
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/*
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* video_out_mga.c
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*
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* Copyright (C) Aaron Holtzman - Aug 1999
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* mpeg2dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "config.h"
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#include "video_out.h"
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#include "video_out_internal.h"
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LIBVO_EXTERN(mga)
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include "drivers/mga_vid.h"
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static vo_info_t vo_info =
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{
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"Matrox G200/G400 overlay (/dev/mga_vid)",
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"mga",
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"Aaron Holtzman <aholtzma@ess.engr.uvic.ca>",
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""
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};
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static mga_vid_config_t mga_vid_config;
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static uint8_t *vid_data, *frame0, *frame1;
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static int next_frame = 0;
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static int f;
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#include "mga_common.c"
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static uint32_t
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init(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format)
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{
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char *frame_mem;
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uint32_t frame_size;
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f = open("/dev/mga_vid",O_RDWR);
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if(f == -1)
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{
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fprintf(stderr,"Couldn't open /dev/mga_vid\n");
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return(-1);
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}
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switch(format){
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case IMGFMT_YV12:
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mga_vid_config.format=MGA_VID_FORMAT_YV12; break;
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case IMGFMT_YUY2:
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mga_vid_config.format=MGA_VID_FORMAT_YUY2; break;
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default:
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fprintf(stderr,"mga: invalid output format %0X\n",format);
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return (-1);
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}
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mga_vid_config.src_width = width;
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mga_vid_config.src_height= height;
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// mga_vid_config.dest_width = width;
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// mga_vid_config.dest_height= height;
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mga_vid_config.dest_width = d_width;
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// (width<704)?704:width; // HACK
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mga_vid_config.dest_height= d_height;
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// (height<576)?576:height; // HACK
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mga_vid_config.x_org= 0; // (720-mga_vid_config.dest_width)/2;
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mga_vid_config.y_org= 0; // (576-mga_vid_config.dest_height)/2;
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if (ioctl(f,MGA_VID_CONFIG,&mga_vid_config))
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{
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perror("Error in mga_vid_config ioctl");
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}
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ioctl(f,MGA_VID_ON,0);
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frame_size = ((width + 31) & ~31) * height + (((width + 31) & ~31) * height) / 2;
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frame_mem = (char*)mmap(0,frame_size*2,PROT_WRITE,MAP_SHARED,f,0);
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frame0 = frame_mem;
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frame1 = frame_mem + frame_size;
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vid_data = frame0;
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next_frame = 0;
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//clear the buffer
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memset(frame_mem,0x80,frame_size*2);
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return 0;
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}
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static const vo_info_t*
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get_info(void)
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{
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return &vo_info;
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}
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static void
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uninit(void)
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{
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ioctl( f,MGA_VID_OFF,0 );
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printf("vo: uninit!\n");
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}
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