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use 4 buffers, fallback to fewer buffers if the video ram isnt large enough 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4895 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2002-02-28 16:20:58 +00:00
parent 57ef06bcf8
commit e863c304f9
1 changed files with 10 additions and 4 deletions
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14
vidix/drivers/mach64_vid.c
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@ -843,12 +843,18 @@ int vixQueryFourcc(vidix_fourcc_t *to)
int vixConfigPlayback(vidix_playback_t *info)
{
if(!is_supported_fourcc(info->fourcc)) return ENOSYS;
if(info->num_frames>3) info->num_frames=3; //more than 3 make no sense at the moment but they do work
mach64_compute_framesize(info);
mach64_overlay_offset = mach64_ram_size - info->frame_size*info->num_frames;
mach64_overlay_offset &= 0xffff0000;
if(mach64_overlay_offset < 0) return EINVAL;
if(info->num_frames>4) info->num_frames=4;
for(;info->num_frames>0; info->num_frames--)
{
mach64_overlay_offset = mach64_ram_size - info->frame_size*info->num_frames;
mach64_overlay_offset &= 0xffff0000;
if(mach64_overlay_offset>0) break;
}
if(info->num_frames <= 0) return EINVAL;
info->dga_addr = (char *)mach64_mem_base + mach64_overlay_offset;
mach64_vid_init_video(info);
return 0;