diff options
Diffstat (limited to 'src/audioOutputs/audioOutput_oss.c')
| -rw-r--r-- | src/audioOutputs/audioOutput_oss.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/audioOutputs/audioOutput_oss.c b/src/audioOutputs/audioOutput_oss.c new file mode 100644 index 000000000..c8e86b7a4 --- /dev/null +++ b/src/audioOutputs/audioOutput_oss.c @@ -0,0 +1,199 @@ +/* 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 */ + + |