1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/Alc/backends/sndio.c	Tue Oct 25 13:02:31 2011 -0700
     1.3 @@ -0,0 +1,381 @@
     1.4 +/**
     1.5 + * OpenAL cross platform audio library
     1.6 + * Copyright (C) 1999-2007 by authors.
     1.7 + * This library is free software; you can redistribute it and/or
     1.8 + *  modify it under the terms of the GNU Library General Public
     1.9 + *  License as published by the Free Software Foundation; either
    1.10 + *  version 2 of the License, or (at your option) any later version.
    1.11 + *
    1.12 + * This library is distributed in the hope that it will be useful,
    1.13 + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.14 + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.15 + *  Library General Public License for more details.
    1.16 + *
    1.17 + * You should have received a copy of the GNU Library General Public
    1.18 + *  License along with this library; if not, write to the
    1.19 + *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    1.20 + *  Boston, MA  02111-1307, USA.
    1.21 + * Or go to http://www.gnu.org/copyleft/lgpl.html
    1.22 + */
    1.23 +
    1.24 +#include "config.h"
    1.25 +
    1.26 +#include <stdio.h>
    1.27 +#include <stdlib.h>
    1.28 +#include <string.h>
    1.29 +#include "alMain.h"
    1.30 +#include "AL/al.h"
    1.31 +#include "AL/alc.h"
    1.32 +
    1.33 +#include <sndio.h>
    1.34 +
    1.35 +
    1.36 +static const ALCchar sndio_device[] = "SndIO Default";
    1.37 +
    1.38 +
    1.39 +static void *sndio_handle;
    1.40 +#ifdef HAVE_DYNLOAD
    1.41 +#define MAKE_FUNC(x) static typeof(x) * p##x
    1.42 +MAKE_FUNC(sio_initpar);
    1.43 +MAKE_FUNC(sio_open);
    1.44 +MAKE_FUNC(sio_close);
    1.45 +MAKE_FUNC(sio_setpar);
    1.46 +MAKE_FUNC(sio_getpar);
    1.47 +MAKE_FUNC(sio_getcap);
    1.48 +MAKE_FUNC(sio_onmove);
    1.49 +MAKE_FUNC(sio_write);
    1.50 +MAKE_FUNC(sio_read);
    1.51 +MAKE_FUNC(sio_start);
    1.52 +MAKE_FUNC(sio_stop);
    1.53 +MAKE_FUNC(sio_nfds);
    1.54 +MAKE_FUNC(sio_pollfd);
    1.55 +MAKE_FUNC(sio_revents);
    1.56 +MAKE_FUNC(sio_eof);
    1.57 +MAKE_FUNC(sio_setvol);
    1.58 +MAKE_FUNC(sio_onvol);
    1.59 +
    1.60 +#define sio_initpar psio_initpar
    1.61 +#define sio_open psio_open
    1.62 +#define sio_close psio_close
    1.63 +#define sio_setpar psio_setpar
    1.64 +#define sio_getpar psio_getpar
    1.65 +#define sio_getcap psio_getcap
    1.66 +#define sio_onmove psio_onmove
    1.67 +#define sio_write psio_write
    1.68 +#define sio_read psio_read
    1.69 +#define sio_start psio_start
    1.70 +#define sio_stop psio_stop
    1.71 +#define sio_nfds psio_nfds
    1.72 +#define sio_pollfd psio_pollfd
    1.73 +#define sio_revents psio_revents
    1.74 +#define sio_eof psio_eof
    1.75 +#define sio_setvol psio_setvol
    1.76 +#define sio_onvol psio_onvol
    1.77 +#endif
    1.78 +
    1.79 +
    1.80 +static ALCboolean sndio_load(void)
    1.81 +{
    1.82 +    if(!sndio_handle)
    1.83 +    {
    1.84 +#ifdef HAVE_DYNLOAD
    1.85 +        sndio_handle = LoadLib("libsndio.so");
    1.86 +        if(!sndio_handle)
    1.87 +            return ALC_FALSE;
    1.88 +
    1.89 +#define LOAD_FUNC(f) do {                                                     \
    1.90 +    p##f = GetSymbol(sndio_handle, #f);                                       \
    1.91 +    if(p##f == NULL) {                                                        \
    1.92 +        CloseLib(sndio_handle);                                               \
    1.93 +        sndio_handle = NULL;                                                  \
    1.94 +        return ALC_FALSE;                                                     \
    1.95 +    }                                                                         \
    1.96 +} while(0)
    1.97 +        LOAD_FUNC(sio_initpar);
    1.98 +        LOAD_FUNC(sio_open);
    1.99 +        LOAD_FUNC(sio_close);
   1.100 +        LOAD_FUNC(sio_setpar);
   1.101 +        LOAD_FUNC(sio_getpar);
   1.102 +        LOAD_FUNC(sio_getcap);
   1.103 +        LOAD_FUNC(sio_onmove);
   1.104 +        LOAD_FUNC(sio_write);
   1.105 +        LOAD_FUNC(sio_read);
   1.106 +        LOAD_FUNC(sio_start);
   1.107 +        LOAD_FUNC(sio_stop);
   1.108 +        LOAD_FUNC(sio_nfds);
   1.109 +        LOAD_FUNC(sio_pollfd);
   1.110 +        LOAD_FUNC(sio_revents);
   1.111 +        LOAD_FUNC(sio_eof);
   1.112 +        LOAD_FUNC(sio_setvol);
   1.113 +        LOAD_FUNC(sio_onvol);
   1.114 +#undef LOAD_FUNC
   1.115 +#else
   1.116 +        sndio_handle = (void*)0xDEADBEEF;
   1.117 +#endif
   1.118 +    }
   1.119 +    return ALC_TRUE;
   1.120 +}
   1.121 +
   1.122 +
   1.123 +typedef struct {
   1.124 +    struct sio_hdl *sndHandle;
   1.125 +
   1.126 +    ALvoid *mix_data;
   1.127 +    ALsizei data_size;
   1.128 +
   1.129 +    volatile int killNow;
   1.130 +    ALvoid *thread;
   1.131 +} sndio_data;
   1.132 +
   1.133 +
   1.134 +static ALuint sndio_proc(ALvoid *ptr)
   1.135 +{
   1.136 +    ALCdevice *device = ptr;
   1.137 +    sndio_data *data = device->ExtraData;
   1.138 +    ALsizei frameSize;
   1.139 +    size_t wrote;
   1.140 +
   1.141 +    SetRTPriority();
   1.142 +
   1.143 +    frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);
   1.144 +
   1.145 +    while(!data->killNow && device->Connected)
   1.146 +    {
   1.147 +        ALsizei len = data->data_size;
   1.148 +        ALubyte *WritePtr = data->mix_data;
   1.149 +
   1.150 +        aluMixData(device, WritePtr, len/frameSize);
   1.151 +        while(len > 0 && !data->killNow)
   1.152 +        {
   1.153 +            wrote = sio_write(data->sndHandle, WritePtr, len);
   1.154 +            if(wrote == 0)
   1.155 +            {
   1.156 +                ERR("sio_write failed\n");
   1.157 +                aluHandleDisconnect(device);
   1.158 +                break;
   1.159 +            }
   1.160 +
   1.161 +            len -= wrote;
   1.162 +            WritePtr += wrote;
   1.163 +        }
   1.164 +    }
   1.165 +
   1.166 +    return 0;
   1.167 +}
   1.168 +
   1.169 +
   1.170 +
   1.171 +static ALCboolean sndio_open_playback(ALCdevice *device, const ALCchar *deviceName)
   1.172 +{
   1.173 +    sndio_data *data;
   1.174 +
   1.175 +    if(!deviceName)
   1.176 +        deviceName = sndio_device;
   1.177 +    else if(strcmp(deviceName, sndio_device) != 0)
   1.178 +        return ALC_FALSE;
   1.179 +
   1.180 +    data = calloc(1, sizeof(*data));
   1.181 +    data->killNow = 0;
   1.182 +
   1.183 +    data->sndHandle = sio_open(NULL, SIO_PLAY, 0);
   1.184 +    if(data->sndHandle == NULL)
   1.185 +    {
   1.186 +        free(data);
   1.187 +        ERR("Could not open device\n");
   1.188 +        return ALC_FALSE;
   1.189 +    }
   1.190 +
   1.191 +    device->szDeviceName = strdup(deviceName);
   1.192 +    device->ExtraData = data;
   1.193 +
   1.194 +    return ALC_TRUE;
   1.195 +}
   1.196 +
   1.197 +static void sndio_close_playback(ALCdevice *device)
   1.198 +{
   1.199 +    sndio_data *data = device->ExtraData;
   1.200 +
   1.201 +    sio_close(data->sndHandle);
   1.202 +    free(data);
   1.203 +    device->ExtraData = NULL;
   1.204 +}
   1.205 +
   1.206 +static ALCboolean sndio_reset_playback(ALCdevice *device)
   1.207 +{
   1.208 +    sndio_data *data = device->ExtraData;
   1.209 +    struct sio_par par;
   1.210 +
   1.211 +    sio_initpar(&par);
   1.212 +
   1.213 +    par.rate = device->Frequency;
   1.214 +
   1.215 +    par.pchan = ((device->FmtChans != DevFmtMono) ? 2 : 1);
   1.216 +
   1.217 +    switch(device->FmtType)
   1.218 +    {
   1.219 +        case DevFmtByte:
   1.220 +            par.bits = 8;
   1.221 +            par.sig = 1;
   1.222 +            break;
   1.223 +        case DevFmtUByte:
   1.224 +            par.bits = 8;
   1.225 +            par.sig = 0;
   1.226 +            break;
   1.227 +        case DevFmtFloat:
   1.228 +            device->FmtType = DevFmtShort;
   1.229 +            /* fall-through */
   1.230 +        case DevFmtShort:
   1.231 +            par.bits = 16;
   1.232 +            par.sig = 1;
   1.233 +            break;
   1.234 +        case DevFmtUShort:
   1.235 +            par.bits = 16;
   1.236 +            par.sig = 0;
   1.237 +            break;
   1.238 +    }
   1.239 +    par.le = SIO_LE_NATIVE;
   1.240 +
   1.241 +    par.round = device->UpdateSize;
   1.242 +    par.appbufsz = device->UpdateSize * (device->NumUpdates-1);
   1.243 +    if(!par.appbufsz) par.appbufsz = device->UpdateSize;
   1.244 +
   1.245 +
   1.246 +    if(!sio_setpar(data->sndHandle, &par) || !sio_getpar(data->sndHandle, &par))
   1.247 +    {
   1.248 +        ERR("Failed to set device parameters\n");
   1.249 +        return ALC_FALSE;
   1.250 +    }
   1.251 +
   1.252 +    if(par.rate != device->Frequency)
   1.253 +    {
   1.254 +        if((device->Flags&DEVICE_FREQUENCY_REQUEST))
   1.255 +            ERR("Failed to set frequency %uhz, got %uhz instead\n", device->Frequency, par.rate);
   1.256 +        device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
   1.257 +        device->Frequency = par.rate;
   1.258 +    }
   1.259 +
   1.260 +    if(par.pchan != ChannelsFromDevFmt(device->FmtChans))
   1.261 +    {
   1.262 +        if(par.pchan != 1 && par.pchan != 2)
   1.263 +        {
   1.264 +            ERR("Unhandled channel count: %u\n", par.pchan);
   1.265 +            return ALC_FALSE;
   1.266 +        }
   1.267 +        if((device->Flags&DEVICE_CHANNELS_REQUEST))
   1.268 +            ERR("Failed to set %s, got %u channels instead\n", DevFmtChannelsString(device->FmtChans), par.pchan);
   1.269 +        device->Flags &= ~DEVICE_CHANNELS_REQUEST;
   1.270 +        device->FmtChans = ((par.pchan==1) ? DevFmtMono : DevFmtStereo);
   1.271 +    }
   1.272 +
   1.273 +    if(par.bits != par.bps*8)
   1.274 +    {
   1.275 +        ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
   1.276 +        return ALC_FALSE;
   1.277 +    }
   1.278 +
   1.279 +    if(par.bits == 8 && par.sig == 1)
   1.280 +        device->FmtType = DevFmtByte;
   1.281 +    else if(par.bits == 8 && par.sig == 0)
   1.282 +        device->FmtType = DevFmtUByte;
   1.283 +    else if(par.bits == 16 && par.sig == 1)
   1.284 +        device->FmtType = DevFmtShort;
   1.285 +    else if(par.bits == 16 && par.sig == 0)
   1.286 +        device->FmtType = DevFmtUShort;
   1.287 +    else
   1.288 +    {
   1.289 +        ERR("Unhandled sample format: %s %u-bit\n", (par.sig?"signed":"unsigned"), par.bits);
   1.290 +        return ALC_FALSE;
   1.291 +    }
   1.292 +
   1.293 +
   1.294 +    device->UpdateSize = par.round;
   1.295 +    device->NumUpdates = (par.bufsz/par.round) + 1;
   1.296 +
   1.297 +    SetDefaultChannelOrder(device);
   1.298 +
   1.299 +
   1.300 +    if(!sio_start(data->sndHandle))
   1.301 +    {
   1.302 +        ERR("Error starting playback\n");
   1.303 +        return ALC_FALSE;
   1.304 +    }
   1.305 +
   1.306 +    data->data_size = device->UpdateSize * par.bps * par.pchan;
   1.307 +    data->mix_data = calloc(1, data->data_size);
   1.308 +
   1.309 +    data->thread = StartThread(sndio_proc, device);
   1.310 +    if(data->thread == NULL)
   1.311 +    {
   1.312 +        sio_stop(data->sndHandle);
   1.313 +        free(data->mix_data);
   1.314 +        data->mix_data = NULL;
   1.315 +        return ALC_FALSE;
   1.316 +    }
   1.317 +
   1.318 +    return ALC_TRUE;
   1.319 +}
   1.320 +
   1.321 +static void sndio_stop_playback(ALCdevice *device)
   1.322 +{
   1.323 +    sndio_data *data = device->ExtraData;
   1.324 +
   1.325 +    if(!data->thread)
   1.326 +        return;
   1.327 +
   1.328 +    data->killNow = 1;
   1.329 +    StopThread(data->thread);
   1.330 +    data->thread = NULL;
   1.331 +
   1.332 +    data->killNow = 0;
   1.333 +    if(!sio_stop(data->sndHandle))
   1.334 +        ERR("Error stopping device\n");
   1.335 +
   1.336 +    free(data->mix_data);
   1.337 +    data->mix_data = NULL;
   1.338 +}
   1.339 +
   1.340 +
   1.341 +static const BackendFuncs sndio_funcs = {
   1.342 +    sndio_open_playback,
   1.343 +    sndio_close_playback,
   1.344 +    sndio_reset_playback,
   1.345 +    sndio_stop_playback,
   1.346 +    NULL,
   1.347 +    NULL,
   1.348 +    NULL,
   1.349 +    NULL,
   1.350 +    NULL,
   1.351 +    NULL
   1.352 +};
   1.353 +
   1.354 +ALCboolean alc_sndio_init(BackendFuncs *func_list)
   1.355 +{
   1.356 +    if(!sndio_load())
   1.357 +        return ALC_FALSE;
   1.358 +    *func_list = sndio_funcs;
   1.359 +    return ALC_TRUE;
   1.360 +}
   1.361 +
   1.362 +void alc_sndio_deinit(void)
   1.363 +{
   1.364 +#ifdef HAVE_DYNLOAD
   1.365 +    if(sndio_handle)
   1.366 +        CloseLib(sndio_handle);
   1.367 +    sndio_handle = NULL;
   1.368 +#endif
   1.369 +}
   1.370 +
   1.371 +void alc_sndio_probe(enum DevProbe type)
   1.372 +{
   1.373 +    switch(type)
   1.374 +    {
   1.375 +        case DEVICE_PROBE:
   1.376 +            AppendDeviceList(sndio_device);
   1.377 +            break;
   1.378 +        case ALL_DEVICE_PROBE:
   1.379 +            AppendAllDeviceList(sndio_device);
   1.380 +            break;
   1.381 +        case CAPTURE_DEVICE_PROBE:
   1.382 +            break;
   1.383 +    }
   1.384 +}