Mercurial > sdl-ios-xcode
view src/audio/dc/SDL_dcaudio.c @ 1133:609c060fd2a2
The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
To: SDL Developers <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Mon, 30 May 2005 23:29:04 +0200
Subject: [SDL] Mac OS X Video Drivers [patch]
I've updated/added the Carbon and X11 video drivers
to the Mac OS X port of SDL 1.2 (the CVS version),
and made the Cocoa driver and runtime *optional*.
The default is still Cocoa, and the "Quartz" driver.
But you can now also use "toolbox" for Carbon, and
"x11" for running with Apple's (or other) X11 server:
export SDL_VIDEODRIVER=x11
export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib
It also checks if the frameworks are available, by a:
#include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h>
(this should make it configure on plain Darwin as well?)
Here are the new configure targets:
--enable-video-cocoa use Cocoa/Quartz video driver default=yes
--enable-video-carbon use Carbon/QuickDraw video driver default=yes
--enable-video-x11 use X11 video driver default=no
./configure --enable-video-cocoa --enable-video-carbon
--enable-video-x11 \
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
The Carbon version is just an updated version of the old
SDL driver for Mac OS 9, and could probably be improved...
(but it does work, including the Carbon version of SDLmain)
If you disable cocoa, you can run with -framework Carbon only,
and the C version of SDL_main.c. And if you disable carbon too,
you can still use the X11 version which doesn't require SDLmain.
I updated the DrawSprocket version, but did not include it.
(no blitters or VRAM GWorlds etc. available on OS X anyway)
Besides for Mac OS 9, I don't think there's any use for it ?
And note that any performance on Mac OS X equals OpenGL anyway...
You can get "fair" software SDL results on captured CG displays,
but for decent frame rates you need to be using GL for rendering.
Finally, here is the patch itself:
http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch
--anders
PS. It says "video", but as usual it applies to mouse/keyboard too.
------
To: A list for developers using the SDL library <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Sun, 4 Sep 2005 10:02:15 +0200
Subject: [SDL] Updated Mac patch
Updated the previous Mac patch to disable Carbon by default.
Also "fixed" the SDL.spec again, so that it builds on Darwin.
http://www.algonet.se/~afb/SDL-1.2.9-mac.patch
Also applied fine to SDL12 CVS, when I tried it.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Thu, 08 Sep 2005 06:16:14 +0000 |
parents | b8d311d90021 |
children | c9b51268668f |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA BERO <bero@geocities.co.jp> based on SDL_diskaudio.c by Sam Lantinga <slouken@libsdl.org> */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Output dreamcast aica */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <sys/stat.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include "SDL_audio.h" #include "SDL_error.h" #include "SDL_audiomem.h" #include "SDL_audio_c.h" #include "SDL_timer.h" #include "SDL_audiodev_c.h" #include "SDL_dcaudio.h" #include "aica.h" #include <dc/spu.h> /* Audio driver functions */ static int DCAUD_OpenAudio(_THIS, SDL_AudioSpec *spec); static void DCAUD_WaitAudio(_THIS); static void DCAUD_PlayAudio(_THIS); static Uint8 *DCAUD_GetAudioBuf(_THIS); static void DCAUD_CloseAudio(_THIS); /* Audio driver bootstrap functions */ static int DCAUD_Available(void) { return 1; } static void DCAUD_DeleteDevice(SDL_AudioDevice *device) { free(device->hidden); free(device); } static SDL_AudioDevice *DCAUD_CreateDevice(int devindex) { SDL_AudioDevice *this; /* Initialize all variables that we clean on shutdown */ this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); if ( this ) { memset(this, 0, (sizeof *this)); this->hidden = (struct SDL_PrivateAudioData *) malloc((sizeof *this->hidden)); } if ( (this == NULL) || (this->hidden == NULL) ) { SDL_OutOfMemory(); if ( this ) { free(this); } return(0); } memset(this->hidden, 0, (sizeof *this->hidden)); /* Set the function pointers */ this->OpenAudio = DCAUD_OpenAudio; this->WaitAudio = DCAUD_WaitAudio; this->PlayAudio = DCAUD_PlayAudio; this->GetAudioBuf = DCAUD_GetAudioBuf; this->CloseAudio = DCAUD_CloseAudio; this->free = DCAUD_DeleteDevice; spu_init(); return this; } AudioBootStrap DCAUD_bootstrap = { "dcaudio", "Dreamcast AICA audio", DCAUD_Available, DCAUD_CreateDevice }; /* This function waits until it is possible to write a full sound buffer */ static void DCAUD_WaitAudio(_THIS) { if (this->hidden->playing) { /* wait */ while(aica_get_pos(0)/this->spec.samples == this->hidden->nextbuf) { thd_pass(); } } } #define SPU_RAM_BASE 0xa0800000 static void spu_memload_stereo8(int leftpos,int rightpos,void *src0,size_t size) { uint8 *src = src0; uint32 *left = (uint32*)(leftpos +SPU_RAM_BASE); uint32 *right = (uint32*)(rightpos+SPU_RAM_BASE); size = (size+7)/8; while(size--) { unsigned lval,rval; lval = *src++; rval = *src++; lval|= (*src++)<<8; rval|= (*src++)<<8; lval|= (*src++)<<16; rval|= (*src++)<<16; lval|= (*src++)<<24; rval|= (*src++)<<24; g2_write_32(left++,lval); g2_write_32(right++,rval); g2_fifo_wait(); } } static void spu_memload_stereo16(int leftpos,int rightpos,void *src0,size_t size) { uint16 *src = src0; uint32 *left = (uint32*)(leftpos +SPU_RAM_BASE); uint32 *right = (uint32*)(rightpos+SPU_RAM_BASE); size = (size+7)/8; while(size--) { unsigned lval,rval; lval = *src++; rval = *src++; lval|= (*src++)<<16; rval|= (*src++)<<16; g2_write_32(left++,lval); g2_write_32(right++,rval); g2_fifo_wait(); } } static void DCAUD_PlayAudio(_THIS) { SDL_AudioSpec *spec = &this->spec; unsigned int offset; if (this->hidden->playing) { /* wait */ while(aica_get_pos(0)/spec->samples == this->hidden->nextbuf) { thd_pass(); } } offset = this->hidden->nextbuf*spec->size; this->hidden->nextbuf^=1; /* Write the audio data, checking for EAGAIN on broken audio drivers */ if (spec->channels==1) { spu_memload(this->hidden->leftpos+offset,this->hidden->mixbuf,this->hidden->mixlen); } else { offset/=2; if ((this->spec.format&255)==8) { spu_memload_stereo8(this->hidden->leftpos+offset,this->hidden->rightpos+offset,this->hidden->mixbuf,this->hidden->mixlen); } else { spu_memload_stereo16(this->hidden->leftpos+offset,this->hidden->rightpos+offset,this->hidden->mixbuf,this->hidden->mixlen); } } if (!this->hidden->playing) { int mode; this->hidden->playing = 1; mode = (spec->format==AUDIO_S8)?SM_8BIT:SM_16BIT; if (spec->channels==1) { aica_play(0,mode,this->hidden->leftpos,0,spec->samples*2,spec->freq,255,128,1); } else { aica_play(0,mode,this->hidden->leftpos ,0,spec->samples*2,spec->freq,255,0,1); aica_play(1,mode,this->hidden->rightpos,0,spec->samples*2,spec->freq,255,255,1); } } } static Uint8 *DCAUD_GetAudioBuf(_THIS) { return(this->hidden->mixbuf); } static void DCAUD_CloseAudio(_THIS) { aica_stop(0); if (this->spec.channels==2) aica_stop(1); if ( this->hidden->mixbuf != NULL ) { SDL_FreeAudioMem(this->hidden->mixbuf); this->hidden->mixbuf = NULL; } } static int DCAUD_OpenAudio(_THIS, SDL_AudioSpec *spec) { switch(spec->format&0xff) { case 8: spec->format = AUDIO_S8; break; case 16: spec->format = AUDIO_S16LSB; break; default: SDL_SetError("Unsupported audio format"); return(-1); } /* Update the fragment size as size in bytes */ SDL_CalculateAudioSpec(spec); /* Allocate mixing buffer */ this->hidden->mixlen = spec->size; this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen); if ( this->hidden->mixbuf == NULL ) { return(-1); } memset(this->hidden->mixbuf, spec->silence, spec->size); this->hidden->leftpos = 0x11000; this->hidden->rightpos = 0x11000+spec->size; this->hidden->playing = 0; this->hidden->nextbuf = 0; /* We're ready to rock and roll. :-) */ return(0); }