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-rw-r--r--src/audioOutputs/audioOutput_oss.c199
1 files changed, 199 insertions, 0 deletions
diff --git a/src/audioOutputs/audioOutput_oss.c b/src/audioOutputs/audioOutput_oss.c
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+++ b/src/audioOutputs/audioOutput_oss.c
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+/* 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 */
+
+