/* the Music Player Daemon (MPD) * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) * This project's homepage is: http://www.musicpd.org * * OSS audio output (c) 2004 by Eric Wong <eric@petta-tech.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "../audioOutput.h" #include <stdlib.h> #ifdef HAVE_OSS #include "../conf.h" #include "../log.h" #include "../sig_handlers.h" #include <string.h> #include <assert.h> #include <signal.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <fcntl.h> #include <unistd.h> #include <errno.h> #if defined(__OpenBSD__) || defined(__NetBSD__) # include <soundcard.h> #else /* !(defined(__OpenBSD__) || defined(__NetBSD__) */ # include <sys/soundcard.h> #endif /* !(defined(__OpenBSD__) || defined(__NetBSD__) */ typedef struct _OssData { int fd; char * device; } OssData; static OssData * newOssData() { OssData * ret = malloc(sizeof(OssData)); ret->device = NULL; ret->fd = -1; return ret; } static void freeOssData(OssData * od) { if(od->device) free(od->device); free(od); } static int oss_initDriver(AudioOutput * audioOutput, ConfigParam * param) { BlockParam * bp = getBlockParam(param, "device"); OssData * od = newOssData(); audioOutput->data = od; if(!bp) { int fd; if(0 <= (fd = open("/dev/sound/dsp", O_WRONLY))) { od->device = strdup("/dev/sound/dsp"); close(fd); } else if(0 <= (fd = open("/dev/dsp", O_WRONLY))) { od->device = strdup("/dev/dsp"); close(fd); } else { ERROR("Error trying to open default OSS device " "specified at line %i\n", param->line); ERROR("Specify a OSS device and/or check your " "permissions\n"); exit(EXIT_FAILURE); } od->fd = -1; return 0; } od->device = strdup(bp->value); return 0; } static void oss_finishDriver(AudioOutput * audioOutput) { OssData * od = audioOutput->data; freeOssData(od); } static int oss_openDevice(AudioOutput * audioOutput, AudioFormat * audioFormat) { OssData * od = audioOutput->data; #ifdef WORDS_BIGENDIAN int i = AFMT_S16_BE; #else int i = AFMT_S16_LE; #endif if((od->fd = open(od->device, O_WRONLY)) < 0) goto fail; if(ioctl(od->fd, SNDCTL_DSP_SETFMT, &i)) goto fail; if(ioctl(od->fd, SNDCTL_DSP_CHANNELS, &audioFormat->channels)) goto fail; if(ioctl(od->fd, SNDCTL_DSP_SPEED, &audioFormat->sampleRate)) goto fail; if(ioctl(od->fd, SNDCTL_DSP_SAMPLESIZE, &audioFormat->bits)) goto fail; /*i = 1; if (ioctl(od->fd,SNDCTL_DSP_STEREO,&i)) err != 32; */ audioOutput->open = 1; return 0; fail: if(od->fd >= 0) close(od->fd); audioOutput->open = 0; ERROR("Error opening OSS device \"%s\": %s\n", od->device, strerror(errno)); return -1; } static void oss_closeDevice(AudioOutput * audioOutput) { OssData * od = audioOutput->data; if(od->fd >= 0) { close(od->fd); od->fd = -1; } audioOutput->open = 0; } static int oss_playAudio(AudioOutput * audioOutput, char * playChunk, int size) { OssData * od = audioOutput->data; int ret; while (size > 0) { ret = write(od->fd, playChunk, size); if(ret<0) { ERROR("closing audio device due to write error\n"); oss_closeDevice(audioOutput); return -1; } playChunk += ret; size -= ret; } return 0; } AudioOutputPlugin ossPlugin = { "oss", oss_initDriver, oss_finishDriver, oss_openDevice, oss_playAudio, oss_closeDevice, NULL /* sendMetadataFunc */ }; #else /* HAVE OSS */ AudioOutputPlugin ossPlugin = { NULL, NULL, NULL, NULL, NULL, NULL, NULL /* sendMetadataFunc */ }; #endif /* HAVE_OSS */