Mercurial > sdl-ios-xcode
view src/audio/mint/SDL_mintaudio_mcsn.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 | 12c49532be00 |
children | 3692456e7b0f |
line wrap: on
line source
/* 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 Sam Lantinga slouken@libsdl.org */ /* MiNT audio driver using XBIOS functions (MacSound compatible driver) Patrice Mandin */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <support.h> /* Mint includes */ #include <mint/osbind.h> #include <mint/falcon.h> #include <mint/cookie.h> #include "SDL_endian.h" #include "SDL_audio.h" #include "SDL_audio_c.h" #include "SDL_audiomem.h" #include "SDL_sysaudio.h" #include "SDL_atarimxalloc_c.h" #include "SDL_mintaudio.h" #include "SDL_mintaudio_mcsn.h" /*--- Defines ---*/ #define MINT_AUDIO_DRIVER_NAME "mint_mcsn" /* Debug print info */ #define DEBUG_NAME "audio:mcsn: " #if 0 #define DEBUG_PRINT(what) \ { \ printf what; \ } #else #define DEBUG_PRINT(what) #endif /*--- Static variables ---*/ static unsigned long cookie_snd, cookie_mch; static cookie_mcsn_t *cookie_mcsn; /*--- Audio driver functions ---*/ static void Mint_CloseAudio(_THIS); static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); static void Mint_LockAudio(_THIS); static void Mint_UnlockAudio(_THIS); /* To check/init hardware audio */ static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); /*--- Audio driver bootstrap functions ---*/ static int Audio_Available(void) { unsigned long dummy; const char *envr = getenv("SDL_AUDIODRIVER"); SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); /* We can't use XBIOS in interrupt with Magic, don't know about thread */ if (Getcookie(C_MagX, &dummy) == C_FOUND) { return(0); } /* Check if user asked a different audio driver */ if ((envr) && (strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); return(0); } /* Cookie _MCH present ? if not, assume ST machine */ if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { cookie_mch = MCH_ST; } /* Cookie _SND present ? if not, assume ST machine */ if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { cookie_snd = SND_PSG; } /* Check if we have 16 bits audio */ if ((cookie_snd & SND_16BIT)==0) { DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n")); return(0); } /* Cookie MCSN present ? */ if (Getcookie(C_McSn, (long *) &cookie_mcsn) != C_FOUND) { DEBUG_PRINT((DEBUG_NAME "no MCSN audio\n")); return(0); } /* Check if interrupt at end of replay */ if (cookie_mcsn->pint == 0) { DEBUG_PRINT((DEBUG_NAME "no interrupt at end of replay\n")); return(0); } /* Check if audio is lockable */ if (Locksnd()!=1) { DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); return(0); } Unlocksnd(); DEBUG_PRINT((DEBUG_NAME "MCSN audio available!\n")); return(1); } static void Audio_DeleteDevice(SDL_AudioDevice *device) { free(device->hidden); free(device); } static SDL_AudioDevice *Audio_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 = Mint_OpenAudio; this->CloseAudio = Mint_CloseAudio; this->LockAudio = Mint_LockAudio; this->UnlockAudio = Mint_UnlockAudio; this->free = Audio_DeleteDevice; return this; } AudioBootStrap MINTAUDIO_MCSN_bootstrap = { MINT_AUDIO_DRIVER_NAME, "MiNT MCSN audio driver", Audio_Available, Audio_CreateDevice }; static void Mint_LockAudio(_THIS) { /* Stop replay */ Buffoper(0); } static void Mint_UnlockAudio(_THIS) { /* Restart replay */ Buffoper(SB_PLA_ENA|SB_PLA_RPT); } static void Mint_CloseAudio(_THIS) { /* Stop replay */ SDL_MintAudio_WaitThread(); Buffoper(0); if (!SDL_MintAudio_mint_present) { /* Uninstall interrupt */ Jdisint(MFP_DMASOUND); } /* Wait if currently playing sound */ while (SDL_MintAudio_mutex != 0) { } /* Clear buffers */ if (SDL_MintAudio_audiobuf[0]) { Mfree(SDL_MintAudio_audiobuf[0]); SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; } /* Unlock sound system */ Unlocksnd(); } static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) { int i; unsigned long masterclock, masterprediv; DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); DEBUG_PRINT(("channels=%d, ", spec->channels)); DEBUG_PRINT(("freq=%d\n", spec->freq)); /* Check formats available */ MINTAUDIO_freqcount=0; switch(cookie_mcsn->play) { case MCSN_ST: spec->channels=1; spec->format=8; /* FIXME: is it signed or unsigned ? */ SDL_MintAudio_AddFrequency(this, 12500, 0, 0, -1); break; case MCSN_TT: /* Also STE, Mega STE */ spec->format=AUDIO_S8; masterclock=MASTERCLOCK_STE; masterprediv=MASTERPREDIV_STE; if ((cookie_mch>>16)==MCH_TT) { masterclock=MASTERCLOCK_TT; masterprediv=MASTERPREDIV_TT; } for (i=0; i<4; i++) { SDL_MintAudio_AddFrequency(this, masterclock/(masterprediv*(1<<i)), masterclock, 3-i, -1); } break; case MCSN_FALCON: /* Also Mac */ for (i=1; i<12; i++) { /* Remove unusable Falcon codec predivisors */ if ((i==6) || (i==8) || (i==10)) { continue; } SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), CLK25M, i+1, -1); } if (cookie_mcsn->res1 != 0) { for (i=1; i<4; i++) { SDL_MintAudio_AddFrequency(this, (cookie_mcsn->res1)/(MASTERPREDIV_FALCON*(1<<i)), CLKEXT, (1<<i)-1, -1); } } spec->format |= 0x8000; /* Audio is always signed */ if ((spec->format & 0x00ff)==16) { spec->format |= 0x1000; /* Audio is always big endian */ spec->channels=2; /* 16 bits always stereo */ } break; } #if 1 for (i=0; i<MINTAUDIO_freqcount; i++) { DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n", i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock, MINTAUDIO_frequencies[i].predivisor )); } #endif MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq); spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); DEBUG_PRINT(("channels=%d, ", spec->channels)); DEBUG_PRINT(("freq=%d\n", spec->freq)); return 0; } static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) { int channels_mode, prediv, dmaclock; void *buffer; /* Stop currently playing sound */ SDL_MintAudio_quit_thread = SDL_FALSE; SDL_MintAudio_thread_finished = SDL_TRUE; SDL_MintAudio_WaitThread(); Buffoper(0); /* Set replay tracks */ Settracks(0,0); Setmontracks(0); /* Select replay format */ channels_mode=STEREO16; switch (spec->format & 0xff) { case 8: if (spec->channels==2) { channels_mode=STEREO8; } else { channels_mode=MONO8; } break; } if (Setmode(channels_mode)<0) { DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); } dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock; prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; switch(cookie_mcsn->play) { case MCSN_TT: Devconnect(DMAPLAY, DAC, CLK25M, CLKOLD, 1); Soundcmd(SETPRESCALE, prediv); DEBUG_PRINT((DEBUG_NAME "STE/TT prescaler selected\n")); break; case MCSN_FALCON: Devconnect(DMAPLAY, DAC, dmaclock, prediv, 1); DEBUG_PRINT((DEBUG_NAME "Falcon prescaler selected\n")); break; } /* Set buffer */ buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; if (Setbuffer(0, buffer, buffer + spec->size)<0) { DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); } if (SDL_MintAudio_mint_present) { SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0); } else { /* Install interrupt */ Jdisint(MFP_DMASOUND); Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); Jenabint(MFP_DMASOUND); if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); } } /* Go */ Buffoper(SB_PLA_ENA|SB_PLA_RPT); DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); } static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) { /* Lock sound system */ if (Locksnd()!=1) { SDL_SetError("Mint_OpenAudio: Audio system already in use"); return(-1); } SDL_MintAudio_device = this; /* Check audio capabilities */ if (Mint_CheckAudio(this, spec)==-1) { return -1; } SDL_CalculateAudioSpec(spec); /* Allocate memory for audio buffers in DMA-able RAM */ DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); if (SDL_MintAudio_audiobuf[0]==NULL) { SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); return (-1); } SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; SDL_MintAudio_numbuf=0; memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); SDL_MintAudio_audiosize = spec->size; SDL_MintAudio_mutex = 0; DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); /* Setup audio hardware */ Mint_InitAudio(this, spec); return(1); /* We don't use SDL threaded audio */ }