begin integrating np's oss code

git-svn-id: https://svn.musicpd.org/mpd/trunk@2394 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 178 insertions, 0 deletions

diff --git a/src/audioOutput_oss.c b/src/audioOutput_oss.c
new file mode 100644
index 000000000..a445761ec
--- /dev/null
+++ b/src/audioOutput_oss.c
@@ -0,0 +1,178 @@
+/* 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 "audio.h"
+
+#ifdef HAVE_OSS
+
+#include "conf.h"
+#include "log.h"
+#include "sig_handlers.h"
+
+#include <string.h>
+#include <assert.h>
+#include <signal.h>
+#include <stdlib.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__) */
+
+static typedef struct _OssData {
+	int device;
+} OssData;
+
+static OssData * newOssData() {
+	OssData * ret = malloc(sizeof(OssData));
+
+	ret->device = 0;
+
+	return ret;
+}
+
+static void freeOssData(OssData * od) {
+	free(od);
+}
+
+static void oss_initDriver(AudioOutput * audioOutput, ConfigParam * param) {
+	char * test;
+	audio_write_size = strtol((getConf())[CONF_AUDIO_WRITE_SIZE],&test,10);
+	if (*test!='\0') {
+		ERROR("\"%s\" is not a valid write size",
+			(getConf())[CONF_AUDIO_WRITE_SIZE]);
+		exit(EXIT_FAILURE);
+	}
+}
+
+static void oss_finishDriver(AudioOutput * audioOutput) {
+	OssData * od = audioOutput->data;
+
+	freeOssData(od);
+}
+
+static int oss_openDevice(AudioOutput * audioOutput,
+		AudioFormat * audioFormat) 
+{
+	int i = AFMT_S16_LE, err = 0;
+	if (audio_device && !isCurrentAudioFormat(audioFormat)) 
+		closeAudioDevice();
+	if (audio_device!=0)
+		return 0;
+	
+	if (audioFormat)
+		copyAudioFormat(&audio_format,audioFormat);
+
+	blockSignals();
+	audio_device = open("/dev/dsp", O_WRONLY);
+	
+	if (audio_device < 0) err |= 1;
+	
+	if (ioctl(audio_device,SNDCTL_DSP_SETFMT,&i))
+		err |= 2;
+	if (ioctl(audio_device,SNDCTL_DSP_CHANNELS, &audio_format.channels))
+		err |= 4;
+	if (ioctl(audio_device,SNDCTL_DSP_SPEED,&audio_format.sampleRate))
+		err |= 8;
+	if (ioctl(audio_device,SNDCTL_DSP_SAMPLESIZE,&audio_format.bits))
+		err |= 16;
+	/*i = 1; if (ioctl(audio_device,SNDCTL_DSP_STEREO,&i)) err != 32; */
+	
+	unblockSignals();
+	
+	if (err)
+		ERROR("Error opening /dev/dsp: 0x%x\n");
+	if (!audio_device)
+		return -1;
+
+	return 0;
+}
+
+static int oss_playAudio(AudioOutput * audioOutput, char * playChunk, 
+		int size) 
+{
+	int send;
+	int ret;
+
+	if(audio_device==0) {
+		ERROR("trying to play w/o the audio device being open!\n");
+		return -1;
+	}
+	send = audio_write_size>size?size:audio_write_size;
+	while (size > 0) {
+		ret = write(audio_device,playChunk,send);
+		if(ret<0) {
+			audioError();
+			ERROR("closing audio device due to write error\n");
+			closeAudioDevice();
+			return -1;
+		}
+		playChunk+=ret;
+		size-=ret;
+	}
+
+	return 0;
+}
+
+static void oss_closeDevice(AudioOutput * audioOutput) {
+	if(audio_device) {
+		blockSignals();
+		close(audio_device);
+		audio_device = 0;
+		unblockSignals();
+	}
+}
+
+AudioOutput ossPlugin =
+{
+	"oss",
+	oss_initDriver,
+	oss_finishDriver,
+	oss_openDevice,
+	oss_playAudio,
+	oss_closeDevice,
+	NULL /* sendMetadataFunc */
+};
+
+#else /* HAVE OSS */
+
+AudioOutput ossPlugin =
+{
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL /* sendMetadataFunc */
+};
+
+#endif /* HAVE_OSS */
+
+