open source
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lvfulong
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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 <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <memory.h>
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#include <unistd.h>
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#include <errno.h>
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#include <math.h>
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#include "alMain.h"
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#include "AL/al.h"
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#include "AL/alc.h"
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#include <sys/audioio.h>
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static const ALCchar solaris_device[] = "Solaris Default";
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typedef struct {
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int fd;
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volatile int killNow;
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ALvoid *thread;
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ALubyte *mix_data;
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int data_size;
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} solaris_data;
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static ALuint SolarisProc(ALvoid *ptr)
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{
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ALCdevice *pDevice = (ALCdevice*)ptr;
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solaris_data *data = (solaris_data*)pDevice->ExtraData;
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int remaining = 0;
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ALint frameSize;
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int wrote;
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SetRTPriority();
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frameSize = aluFrameSizeFromFormat(pDevice->Format);
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while(!data->killNow && pDevice->Connected)
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{
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ALint len = data->data_size;
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ALubyte *WritePtr = data->mix_data;
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aluMixData(pDevice, WritePtr, len/frameSize);
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while(len > 0 && !data->killNow)
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{
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wrote = write(data->fd, WritePtr, len);
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if(wrote < 0)
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{
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if(errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)
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{
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AL_PRINT("write failed: %s\n", strerror(errno));
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aluHandleDisconnect(pDevice);
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break;
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}
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Sleep(1);
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continue;
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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 ALCboolean solaris_open_playback(ALCdevice *device, const ALCchar *deviceName)
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{
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char driver[64];
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solaris_data *data;
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strncpy(driver, GetConfigValue("solaris", "device", "/dev/audio"), sizeof(driver)-1);
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driver[sizeof(driver)-1] = 0;
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if(!deviceName)
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deviceName = solaris_device;
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else if(strcmp(deviceName, solaris_device) != 0)
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return ALC_FALSE;
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data = (solaris_data*)calloc(1, sizeof(solaris_data));
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data->killNow = 0;
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data->fd = open(driver, O_WRONLY);
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if(data->fd == -1)
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{
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free(data);
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if(errno != ENOENT)
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AL_PRINT("Could not open %s: %s\n", driver, strerror(errno));
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return ALC_FALSE;
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}
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device->szDeviceName = strdup(deviceName);
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device->ExtraData = data;
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return ALC_TRUE;
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}
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static void solaris_close_playback(ALCdevice *device)
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{
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solaris_data *data = (solaris_data*)device->ExtraData;
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close(data->fd);
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free(data);
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device->ExtraData = NULL;
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}
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static ALCboolean solaris_reset_playback(ALCdevice *device)
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{
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solaris_data *data = (solaris_data*)device->ExtraData;
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audio_info_t info;
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ALuint frameSize;
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int numChannels;
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AUDIO_INITINFO(&info);
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switch(aluBytesFromFormat(device->Format))
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{
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case 1:
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info.play.precision = 8;
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info.play.encoding = AUDIO_ENCODING_LINEAR8;
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break;
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case 4:
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switch(numChannels)
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{
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case 1: device->Format = AL_FORMAT_MONO16; break;
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case 2: device->Format = AL_FORMAT_STEREO16; break;
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case 4: device->Format = AL_FORMAT_QUAD16; break;
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case 6: device->Format = AL_FORMAT_51CHN16; break;
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case 7: device->Format = AL_FORMAT_61CHN16; break;
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case 8: device->Format = AL_FORMAT_71CHN16; break;
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}
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/* fall-through */
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case 2:
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info.play.precision = 16;
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info.play.encoding = AUDIO_ENCODING_LINEAR;
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break;
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default:
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AL_PRINT("Unknown format: 0x%x\n", device->Format);
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return ALC_FALSE;
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}
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numChannels = aluChannelsFromFormat(device->Format);
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info.play.sample_rate = device->Frequency;
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info.play.channels = numChannels;
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frameSize = numChannels * aluBytesFromFormat(device->Format);
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info.play.buffer_size = device->UpdateSize*device->NumUpdates * frameSize;
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if(ioctl(data->fd, AUDIO_SETINFO, &info) < 0)
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{
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AL_PRINT("ioctl failed: %s\n", strerror(errno));
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return ALC_FALSE;
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}
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if(aluChannelsFromFormat(device->Format) != info.play.channels)
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{
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AL_PRINT("Could not set %d channels, got %d instead\n", aluChannelsFromFormat(device->Format), info.play.channels);
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return ALC_FALSE;
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}
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if(!((info.play.precision == 8 && aluBytesFromFormat(device->Format) == 1) ||
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(info.play.precision == 16 && aluBytesFromFormat(device->Format) == 2)))
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{
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AL_PRINT("Could not set %d-bit output, got %d\n", aluBytesFromFormat(device->Format)*8, info.play.precision);
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return ALC_FALSE;
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}
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device->Frequency = info.play.sample_rate;
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device->UpdateSize = (info.play.buffer_size/device->NumUpdates) + 1;
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data->data_size = device->UpdateSize * frameSize;
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data->mix_data = calloc(1, data->data_size);
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SetDefaultChannelOrder(device);
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data->thread = StartThread(SolarisProc, device);
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if(data->thread == NULL)
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{
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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 solaris_stop_playback(ALCdevice *device)
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{
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solaris_data *data = (solaris_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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free(data->mix_data);
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data->mix_data = NULL;
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}
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static ALCboolean solaris_open_capture(ALCdevice *device, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
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{
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(void)device;
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(void)deviceName;
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(void)frequency;
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(void)format;
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(void)SampleSize;
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return ALC_FALSE;
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}
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static void solaris_close_capture(ALCdevice *device)
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{
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(void)device;
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}
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static void solaris_start_capture(ALCdevice *pDevice)
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{
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(void)pDevice;
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}
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static void solaris_stop_capture(ALCdevice *pDevice)
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{
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(void)pDevice;
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}
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static void solaris_capture_samples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
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{
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(void)pDevice;
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(void)pBuffer;
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(void)lSamples;
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}
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static ALCuint solaris_available_samples(ALCdevice *pDevice)
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{
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(void)pDevice;
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return 0;
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}
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BackendFuncs solaris_funcs = {
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solaris_open_playback,
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solaris_close_playback,
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solaris_reset_playback,
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solaris_stop_playback,
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solaris_open_capture,
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solaris_close_capture,
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solaris_start_capture,
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solaris_stop_capture,
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solaris_capture_samples,
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solaris_available_samples
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};
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void alc_solaris_init(BackendFuncs *func_list)
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{
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*func_list = solaris_funcs;
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}
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void alc_solaris_deinit(void)
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{
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}
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void alc_solaris_probe(int type)
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{
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#ifdef HAVE_STAT
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struct stat buf;
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if(stat(GetConfigValue("solaris", "device", "/dev/audio"), &buf) != 0)
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return;
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#endif
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if(type == DEVICE_PROBE)
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AppendDeviceList(solaris_device);
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else if(type == ALL_DEVICE_PROBE)
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AppendAllDeviceList(solaris_device);
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}
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