diff options
author | Chris Robinson <[email protected]> | 2009-03-10 01:03:39 -0700 |
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committer | Chris Robinson <[email protected]> | 2009-03-10 01:03:39 -0700 |
commit | 7ebb28327f8e5fb91e3b0808f2782bf2f2e15341 (patch) | |
tree | 9ddf005ab90be2d09b5d743fc66674d650ab26b0 /Alc | |
parent | 86931cbde425a092527fd873e770ea5a617138da (diff) |
Remove the SDL backend
Diffstat (limited to 'Alc')
-rw-r--r-- | Alc/ALc.c | 3 | ||||
-rw-r--r-- | Alc/sdl.c | 310 |
2 files changed, 0 insertions, 313 deletions
@@ -71,9 +71,6 @@ static struct { #ifdef HAVE_PORTAUDIO { "port", alc_pa_init, EmptyFuncs }, #endif -#ifdef HAVE_SDL - { "sdl", alc_sdl_init, EmptyFuncs }, -#endif { "wave", alc_wave_init, EmptyFuncs }, diff --git a/Alc/sdl.c b/Alc/sdl.c deleted file mode 100644 index 236aaf9d..00000000 --- a/Alc/sdl.c +++ /dev/null @@ -1,310 +0,0 @@ -/** - * OpenAL cross platform audio library - * Copyright (C) 1999-2007 by authors. - * 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 Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * Or go to http://www.gnu.org/copyleft/lgpl.html - */ - -#include "config.h" - -#include "alMain.h" -#include "AL/al.h" -#include "AL/alc.h" - -#include <string.h> -#include <stdlib.h> -#ifdef HAVE_DLFCN_H -#include <dlfcn.h> -#endif - -#ifdef HAVE_SDL_SDL_H -#include <SDL/SDL.h> -#elif defined(HAVE_SDL_H) -#include <SDL.h> -#endif - -static void *sdl_handle; -#define MAKE_FUNC(x) static typeof(x) * p##x -MAKE_FUNC(SDL_PauseAudio); -MAKE_FUNC(SDL_CloseAudio); -MAKE_FUNC(SDL_OpenAudio); -MAKE_FUNC(SDL_InitSubSystem); -MAKE_FUNC(SDL_GetError); -MAKE_FUNC(SDL_LockAudio); -MAKE_FUNC(SDL_UnlockAudio); -#undef MAKE_FUNC - -static char *sdl_device; -/* SDL audio can only be initialized once per process */ -static int initialized; - -typedef struct { - SDL_AudioSpec audioSpec; - volatile int killNow; - ALvoid *thread; - - ALubyte *mix_data; - int data_size; - int data_read; - int data_write; -} sdl_data; - - -static void SDLCALL fillAudio(void *userdata, Uint8 *stream, int len) -{ - sdl_data *data = (sdl_data*)userdata; - int rem = data->data_size-data->data_read; - if(len >= rem) - { - memcpy(stream, data->mix_data + data->data_read, rem); - stream += rem; - len -= rem; - data->data_read = 0; - } - if(len > 0) - { - memcpy(stream, data->mix_data + data->data_read, len); - data->data_read += len; - } -} - -static ALuint SDLProc(ALvoid *ptr) -{ - ALCdevice *pDevice = (ALCdevice*)ptr; - sdl_data *data = (sdl_data*)pDevice->ExtraData; - int len, rem; - - pSDL_PauseAudio(0); - while(!data->killNow) - { - pSDL_LockAudio(); - - len = (data->data_read-data->data_write+data->data_size)%data->data_size; - if(len == 0) - { - pSDL_UnlockAudio(); - - Sleep(1); - continue; - } - - rem = data->data_size - data->data_write; - - SuspendContext(NULL); - if(len > rem) - { - aluMixData(pDevice->Context, data->mix_data+data->data_write, rem, pDevice->Format); - aluMixData(pDevice->Context, data->mix_data, len-rem, pDevice->Format); - } - else - aluMixData(pDevice->Context, data->mix_data+data->data_write, len, pDevice->Format); - ProcessContext(NULL); - - data->data_write = data->data_read; - - pSDL_UnlockAudio(); - } - pSDL_PauseAudio(1); - - return 0; -} - -static ALCboolean sdl_open_playback(ALCdevice *device, const ALCchar *deviceName) -{ - SDL_AudioSpec sdlSpec; - ALuint frameSize; - sdl_data *data; - - if(initialized || !sdl_device) - return ALC_FALSE; - - if(deviceName) - { - if(strcmp(deviceName, sdl_device)) - return ALC_FALSE; - device->szDeviceName = sdl_device; - } - else - device->szDeviceName = sdl_device; - - data = (sdl_data*)calloc(1, sizeof(sdl_data)); - data->killNow = 0; - - frameSize = aluBytesFromFormat(device->Format) * - aluChannelsFromFormat(device->Format); - - sdlSpec.freq = device->Frequency; - sdlSpec.channels = aluChannelsFromFormat(device->Format); - switch(aluBytesFromFormat(device->Format)) - { - case 1: - sdlSpec.format = AUDIO_U8; - break; - case 2: - sdlSpec.format = AUDIO_S16SYS; - break; - default: - AL_PRINT("Unknown format?! %x\n", device->Format); - free(data); - return ALC_FALSE; - } - sdlSpec.samples = 1; - while(sdlSpec.samples < device->UpdateSize) - sdlSpec.samples <<= 1; - sdlSpec.samples >>= 1; - - sdlSpec.callback = fillAudio; - sdlSpec.userdata = data; - - if(pSDL_OpenAudio(&sdlSpec, &data->audioSpec) < 0) - { - AL_PRINT("Audio init failed: %s\n", pSDL_GetError()); - free(data); - return ALC_FALSE; - } - - if(!((data->audioSpec.format == AUDIO_U8 && aluBytesFromFormat(device->Format) == 1) || - (data->audioSpec.format == AUDIO_S16SYS && aluBytesFromFormat(device->Format) == 2))) - { - AL_PRINT("Could not set %d-bit, got format %#x instead\n", aluBytesFromFormat(device->Format), data->audioSpec.format); - pSDL_CloseAudio(); - free(data); - return ALC_FALSE; - } - if(aluChannelsFromFormat(device->Format) != data->audioSpec.channels) - { - AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), data->audioSpec.channels); - pSDL_CloseAudio(); - free(data); - return ALC_FALSE; - } - - device->Frequency = data->audioSpec.freq; - device->UpdateSize = data->audioSpec.size / frameSize; - - data->data_size = device->UpdateSize * frameSize * 2; - data->mix_data = malloc(data->data_size); - if(data->mix_data == NULL) - { - AL_PRINT("Could not allocate %d bytes\n", data->data_size); - pSDL_CloseAudio(); - free(data); - return ALC_FALSE; - } - memset(data->mix_data, data->audioSpec.silence, data->data_size); - - device->ExtraData = data; - data->thread = StartThread(SDLProc, device); - if(data->thread == NULL) - { - pSDL_CloseAudio(); - device->ExtraData = NULL; - free(data->mix_data); - free(data); - return ALC_FALSE; - } - - initialized = 1; - - return ALC_TRUE; -} - -static void sdl_close_playback(ALCdevice *device) -{ - sdl_data *data = (sdl_data*)device->ExtraData; - data->killNow = 1; - StopThread(data->thread); - - pSDL_CloseAudio(); - initialized = 0; - - free(data->mix_data); - free(data); - device->ExtraData = NULL; -} - - -static ALCboolean sdl_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize) -{ - return ALC_FALSE; - (void)device; - (void)deviceName; - (void)frequency; - (void)format; - (void)SampleSize; -} - - -BackendFuncs sdl_funcs = { - sdl_open_playback, - sdl_close_playback, - sdl_open_capture, - NULL, - NULL, - NULL, - NULL, - NULL -}; - -void alc_sdl_init(BackendFuncs *func_list) -{ - const char *str; - - *func_list = sdl_funcs; - -#ifdef HAVE_DLFCN_H -#if defined(__APPLE__) && defined(__MACH__) -# define SDLLIB "SDL.framework/SDL" -#else -# define SDLLIB "libSDL.so" -#endif - sdl_handle = dlopen(SDLLIB, RTLD_NOW); - if(!sdl_handle) - return; - dlerror(); - -#define LOAD_FUNC(f) do { \ - p##f = (typeof(f)*)dlsym(sdl_handle, #f); \ - if((str=dlerror()) != NULL) \ - { \ - dlclose(sdl_handle); \ - sdl_handle = NULL; \ - AL_PRINT("Could not load %s from "SDLLIB": %s\n", #f, str); \ - return; \ - } \ -} while(0) -#else - str = NULL; - sdl_handle = 0xDEADBEEF; -#define LOAD_FUNC(f) p##f = f -#endif - - LOAD_FUNC(SDL_PauseAudio); - LOAD_FUNC(SDL_CloseAudio); - LOAD_FUNC(SDL_OpenAudio); - LOAD_FUNC(SDL_InitSubSystem); - LOAD_FUNC(SDL_GetError); - LOAD_FUNC(SDL_LockAudio); - LOAD_FUNC(SDL_UnlockAudio); - -#undef LOAD_FUNC - - if(pSDL_InitSubSystem(SDL_INIT_AUDIO) < 0) - return; - - sdl_device = AppendDeviceList("SDL Software"); - AppendAllDeviceList(sdl_device); -} |