Mercurial > sdl-ios-xcode
view src/timer/mint/SDL_vbltimer.S @ 4165:3b8ac3d311a2 SDL-1.2
Hello.
This patch provides basic support for video on the Sony PS3
Linux framebuffer. Scaling, format-conversion, and drawing is
done from the SPEs, so there is little performance impact to
PPE applications. This is by no means production quality code,
but it is a very good start and a good example of how to use the
PS3's hardware capabilities to accelerate video playback on
the box.
The driver has been verified to work with ffplay, mplayer and xine.
This piece of software has been developed at the IBM R&D Lab
in Boeblingen, Germany and is now returned to the community.
Enjoy !
Signed-off-by: D.Herrendoerfer < d.herrendoerfer [at] de [dot] ibm [dot] com >
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 02 Apr 2009 04:06:55 +0000 |
| parents | a1b03ba2fcd0 |
| children | 5425a6fbacf8 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /* * VBL queue routine * * Patrice Mandin */ #define _vbl_queue 0x456 #define _hz_200 0x4ba .text .globl _SDL_AtariVblInstall .globl _SDL_AtariVblUninstall .globl _SDL_MintAudio_hasfpu /*--- Vector installer ---*/ _SDL_AtariVblInstall: movel sp@(4),my_vector lea _my_vbl,a0 clrw vbl_mutex movel _hz_200.w, _SDL_Atari_hz200 /* Stop interrupts */ movew #0x2700,sr /* Read vbl_queue pointer */ movel _vbl_queue.w,a1 /* Search a free place */ moveq #7,d0 bcl_search_place: movel (a1),d1 beqs place_found addql #4,a1 dbra d0,bcl_search_place /* Not found */ moveq #1,d0 bras exit_vbl_queue /* Then install ourselves */ place_found: movel a0,(a1) moveq #0,d0 exit_vbl_queue: /* Restart interrupts */ movew #0x2300,sr rts /*--- Vector uninstaller ---*/ _SDL_AtariVblUninstall: movel sp@(4),d0 cmpl my_vector,d0 bnes badvector movel #_my_vbl,d0 /* Stop interrupts */ movew #0x2700,sr /* Read vbl_queue pointer */ movel _vbl_queue.w,a1 /* Search where we are */ moveq #7,d1 bcl2_search_place: cmpl (a1),d0 bnes next_place clrl (a1) moveq #0,d1 next_place: addql #4,a1 dbra d1,bcl2_search_place /* Restart interrupts */ movew #0x2300,sr badvector: rts /*--- Our vbl ---*/ _my_vbl: /* Update _hz_200 */ movel _hz_200.w, _SDL_Atari_hz200 /* Verify if this is not already running */ tstw vbl_mutex bnes vbl_end notw vbl_mutex moveml d0-d7/a0-a6,sp@- /* Save FPU if needed */ tstw _SDL_MintAudio_hasfpu beqs SDL_AtariVbl_nofpu1 .chip 68060 fsave sp@- fmoveml fpcr/fpsr/fpiar,sp@- fmovemx fp0-fp7,sp@- .chip 68000 SDL_AtariVbl_nofpu1: movel my_vector,a0 jsr a0@ /* Restore FPU if needed */ tstw _SDL_MintAudio_hasfpu beqs SDL_AtariVbl_Xbios_nofpu2 .chip 68060 fmovemx sp@+,fp0-fp7 fmoveml sp@+,fpcr/fpsr/fpiar frestore sp@+ .chip 68000 SDL_AtariVbl_Xbios_nofpu2: moveml sp@+,d0-d7/a0-a6 clrw vbl_mutex vbl_end: rts .data .even .comm _SDL_Atari_hz200,4*1 .even .comm vbl_mutex,2*1 .even .comm my_vector,4*1