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https://github.com/love2d/megasource.git
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Add OpenAL-Soft 1.15.1.
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rude
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/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "alMain.h"
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#include "alu.h"
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#include <sndio.h>
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static const ALCchar sndio_device[] = "SndIO Default";
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static ALCboolean sndio_load(void)
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{
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return ALC_TRUE;
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}
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typedef struct {
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struct sio_hdl *sndHandle;
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ALvoid *mix_data;
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ALsizei data_size;
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volatile int killNow;
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ALvoid *thread;
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} sndio_data;
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static ALuint sndio_proc(ALvoid *ptr)
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{
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ALCdevice *device = ptr;
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sndio_data *data = device->ExtraData;
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ALsizei frameSize;
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size_t wrote;
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SetRTPriority();
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frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
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while(!data->killNow && device->Connected)
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{
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ALsizei len = data->data_size;
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ALubyte *WritePtr = data->mix_data;
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aluMixData(device, WritePtr, len/frameSize);
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while(len > 0 && !data->killNow)
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{
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wrote = sio_write(data->sndHandle, WritePtr, len);
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if(wrote == 0)
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{
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ERR("sio_write failed\n");
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ALCdevice_Lock(device);
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aluHandleDisconnect(device);
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ALCdevice_Unlock(device);
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break;
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}
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len -= wrote;
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WritePtr += wrote;
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}
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}
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return 0;
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}
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static ALCenum sndio_open_playback(ALCdevice *device, const ALCchar *deviceName)
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{
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sndio_data *data;
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if(!deviceName)
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deviceName = sndio_device;
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else if(strcmp(deviceName, sndio_device) != 0)
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return ALC_INVALID_VALUE;
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data = calloc(1, sizeof(*data));
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data->killNow = 0;
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data->sndHandle = sio_open(NULL, SIO_PLAY, 0);
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if(data->sndHandle == NULL)
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{
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free(data);
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ERR("Could not open device\n");
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return ALC_INVALID_VALUE;
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}
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device->DeviceName = strdup(deviceName);
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device->ExtraData = data;
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return ALC_NO_ERROR;
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}
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static void sndio_close_playback(ALCdevice *device)
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{
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sndio_data *data = device->ExtraData;
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sio_close(data->sndHandle);
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free(data);
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device->ExtraData = NULL;
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}
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static ALCboolean sndio_reset_playback(ALCdevice *device)
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{
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sndio_data *data = device->ExtraData;
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struct sio_par par;
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sio_initpar(&par);
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par.rate = device->Frequency;
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par.pchan = ((device->FmtChans != DevFmtMono) ? 2 : 1);
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switch(device->FmtType)
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{
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case DevFmtByte:
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par.bits = 8;
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par.sig = 1;
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break;
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case DevFmtUByte:
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par.bits = 8;
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par.sig = 0;
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break;
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case DevFmtFloat:
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case DevFmtShort:
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par.bits = 16;
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par.sig = 1;
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break;
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case DevFmtUShort:
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par.bits = 16;
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par.sig = 0;
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break;
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case DevFmtInt:
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par.bits = 32;
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par.sig = 1;
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break;
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case DevFmtUInt:
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par.bits = 32;
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par.sig = 0;
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break;
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}
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par.le = SIO_LE_NATIVE;
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par.round = device->UpdateSize;
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par.appbufsz = device->UpdateSize * (device->NumUpdates-1);
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if(!par.appbufsz) par.appbufsz = device->UpdateSize;
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if(!sio_setpar(data->sndHandle, &par) || !sio_getpar(data->sndHandle, &par))
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{
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ERR("Failed to set device parameters\n");
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return ALC_FALSE;
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}
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if(par.bits != par.bps*8)
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{
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ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
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return ALC_FALSE;
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}
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device->Frequency = par.rate;
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device->FmtChans = ((par.pchan==1) ? DevFmtMono : DevFmtStereo);
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if(par.bits == 8 && par.sig == 1)
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device->FmtType = DevFmtByte;
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else if(par.bits == 8 && par.sig == 0)
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device->FmtType = DevFmtUByte;
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else if(par.bits == 16 && par.sig == 1)
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device->FmtType = DevFmtShort;
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else if(par.bits == 16 && par.sig == 0)
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device->FmtType = DevFmtUShort;
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else if(par.bits == 32 && par.sig == 1)
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device->FmtType = DevFmtInt;
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else if(par.bits == 32 && par.sig == 0)
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device->FmtType = DevFmtUInt;
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else
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{
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ERR("Unhandled sample format: %s %u-bit\n", (par.sig?"signed":"unsigned"), par.bits);
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return ALC_FALSE;
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}
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device->UpdateSize = par.round;
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device->NumUpdates = (par.bufsz/par.round) + 1;
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SetDefaultChannelOrder(device);
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return ALC_TRUE;
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}
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static ALCboolean sndio_start_playback(ALCdevice *device)
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{
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sndio_data *data = device->ExtraData;
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if(!sio_start(data->sndHandle))
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{
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ERR("Error starting playback\n");
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return ALC_FALSE;
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}
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data->data_size = device->UpdateSize * FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
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data->mix_data = calloc(1, data->data_size);
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data->thread = StartThread(sndio_proc, device);
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if(data->thread == NULL)
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{
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sio_stop(data->sndHandle);
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free(data->mix_data);
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data->mix_data = NULL;
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return ALC_FALSE;
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}
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return ALC_TRUE;
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}
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static void sndio_stop_playback(ALCdevice *device)
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{
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sndio_data *data = device->ExtraData;
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if(!data->thread)
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return;
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data->killNow = 1;
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StopThread(data->thread);
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data->thread = NULL;
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data->killNow = 0;
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if(!sio_stop(data->sndHandle))
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ERR("Error stopping device\n");
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free(data->mix_data);
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data->mix_data = NULL;
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}
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static const BackendFuncs sndio_funcs = {
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sndio_open_playback,
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sndio_close_playback,
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sndio_reset_playback,
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sndio_start_playback,
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sndio_stop_playback,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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ALCdevice_LockDefault,
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ALCdevice_UnlockDefault,
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ALCdevice_GetLatencyDefault
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};
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ALCboolean alc_sndio_init(BackendFuncs *func_list)
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{
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if(!sndio_load())
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return ALC_FALSE;
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*func_list = sndio_funcs;
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return ALC_TRUE;
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}
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void alc_sndio_deinit(void)
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{
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}
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void alc_sndio_probe(enum DevProbe type)
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{
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switch(type)
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{
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case ALL_DEVICE_PROBE:
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AppendAllDevicesList(sndio_device);
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break;
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case CAPTURE_DEVICE_PROBE:
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break;
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}
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}
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