Mercurial > sdl-ios-xcode
view src/audio/mme/SDL_mmeaudio.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 | 3692456e7b0f |
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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 Sam Lantinga slouken@libsdl.org */ /* Tru64 UNIX MME support */ #include "SDL_mmeaudio.h" static BOOL inUse[NUM_BUFFERS]; /* Audio driver functions */ static int MME_OpenAudio(_THIS, SDL_AudioSpec *spec); static void MME_WaitAudio(_THIS); static Uint8 *MME_GetAudioBuf(_THIS); static void MME_PlayAudio(_THIS); static void MME_WaitDone(_THIS); static void MME_CloseAudio(_THIS); /* Audio driver bootstrap functions */ static int Audio_Available(void) { return(1); } static void Audio_DeleteDevice(SDL_AudioDevice *device) { if ( device ) { if ( device->hidden ) { free(device->hidden); device->hidden = NULL; } free(device); device = NULL; } } static SDL_AudioDevice *Audio_CreateDevice(int devindex) { SDL_AudioDevice *this; /* Initialize all variables that we clean on shutdown */ this = malloc(sizeof(SDL_AudioDevice)); if ( this ) { memset(this, 0, (sizeof *this)); this->hidden = 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 = MME_OpenAudio; this->WaitAudio = MME_WaitAudio; this->PlayAudio = MME_PlayAudio; this->GetAudioBuf = MME_GetAudioBuf; this->WaitDone = MME_WaitDone; this->CloseAudio = MME_CloseAudio; this->free = Audio_DeleteDevice; return this; } AudioBootStrap MMEAUDIO_bootstrap = { "waveout", "Tru64 MME WaveOut", Audio_Available, Audio_CreateDevice }; static void SetMMerror(char *function, MMRESULT code) { int len; char errbuf[MAXERRORLENGTH]; sprintf(errbuf, "%s: ", function); len = strlen(errbuf); waveOutGetErrorText(code, errbuf+len, MAXERRORLENGTH-len); SDL_SetError("%s",errbuf); } static void CALLBACK MME_CALLBACK(HWAVEOUT hwo, UINT uMsg, DWORD dwInstance, LPARAM dwParam1, LPARAM dwParam2) { WAVEHDR *wp = (WAVEHDR *) dwParam1; if ( uMsg == WOM_DONE ) inUse[wp->dwUser] = FALSE; } static int MME_OpenAudio(_THIS, SDL_AudioSpec *spec) { MMRESULT result; int i; mixbuf = NULL; /* Set basic WAVE format parameters */ shm = mmeAllocMem(sizeof(*shm)); if ( shm == NULL ) { SDL_SetError("Out of memory: shm"); return(-1); } shm->sound = 0; shm->wFmt.wf.wFormatTag = WAVE_FORMAT_PCM; /* Determine the audio parameters from the AudioSpec */ switch ( spec->format & 0xFF ) { case 8: /* Unsigned 8 bit audio data */ spec->format = AUDIO_U8; shm->wFmt.wBitsPerSample = 8; break; case 16: /* Signed 16 bit audio data */ spec->format = AUDIO_S16; shm->wFmt.wBitsPerSample = 16; break; default: SDL_SetError("Unsupported audio format"); return(-1); } shm->wFmt.wf.nChannels = spec->channels; shm->wFmt.wf.nSamplesPerSec = spec->freq; shm->wFmt.wf.nBlockAlign = shm->wFmt.wf.nChannels * shm->wFmt.wBitsPerSample / 8; shm->wFmt.wf.nAvgBytesPerSec = shm->wFmt.wf.nSamplesPerSec * shm->wFmt.wf.nBlockAlign; /* Check the buffer size -- minimum of 1/4 second (word aligned) */ if ( spec->samples < (spec->freq/4) ) spec->samples = ((spec->freq/4)+3)&~3; /* Update the fragment size as size in bytes */ SDL_CalculateAudioSpec(spec); /* Open the audio device */ result = waveOutOpen(&(shm->sound), WAVE_MAPPER, &(shm->wFmt.wf), MME_CALLBACK, NULL, (CALLBACK_FUNCTION|WAVE_OPEN_SHAREABLE)); if ( result != MMSYSERR_NOERROR ) { SetMMerror("waveOutOpen()", result); return(-1); } /* Create the sound buffers */ mixbuf = (Uint8 *)mmeAllocBuffer(NUM_BUFFERS * (spec->size)); if ( mixbuf == NULL ) { SDL_SetError("Out of memory: mixbuf"); return(-1); } for (i = 0; i < NUM_BUFFERS; i++) { shm->wHdr[i].lpData = &mixbuf[i * (spec->size)]; shm->wHdr[i].dwBufferLength = spec->size; shm->wHdr[i].dwFlags = 0; shm->wHdr[i].dwUser = i; shm->wHdr[i].dwLoops = 0; /* loop control counter */ shm->wHdr[i].lpNext = NULL; /* reserved for driver */ shm->wHdr[i].reserved = 0; inUse[i] = FALSE; } next_buffer = 0; return 0; } static void MME_WaitAudio(_THIS) { while ( inUse[next_buffer] ) { mmeWaitForCallbacks(); mmeProcessCallbacks(); } } static Uint8 *MME_GetAudioBuf(_THIS) { Uint8 *retval; inUse[next_buffer] = TRUE; retval = (Uint8 *)(shm->wHdr[next_buffer].lpData); return retval; } static void MME_PlayAudio(_THIS) { /* Queue it up */ waveOutWrite(shm->sound, &(shm->wHdr[next_buffer]), sizeof(WAVEHDR)); next_buffer = (next_buffer+1)%NUM_BUFFERS; } static void MME_WaitDone(_THIS) { MMRESULT result; int i; if ( shm->sound ) { for (i = 0; i < NUM_BUFFERS; i++) while ( inUse[i] ) { mmeWaitForCallbacks(); mmeProcessCallbacks(); } result = waveOutReset(shm->sound); if ( result != MMSYSERR_NOERROR ) SetMMerror("waveOutReset()", result); mmeProcessCallbacks(); } } static void MME_CloseAudio(_THIS) { MMRESULT result; if ( mixbuf ) { result = mmeFreeBuffer(mixbuf); if (result != MMSYSERR_NOERROR ) SetMMerror("mmeFreeBuffer", result); mixbuf = NULL; } if ( shm ) { if ( shm->sound ) { result = waveOutClose(shm->sound); if (result != MMSYSERR_NOERROR ) SetMMerror("waveOutClose()", result); mmeProcessCallbacks(); } result = mmeFreeMem(shm); if (result != MMSYSERR_NOERROR ) SetMMerror("mmeFreeMem()", result); shm = NULL; } }