renamed src/audioOutputs/ to src/output/

Again, no CamelCase in the directory name.

1 files changed, 571 insertions, 0 deletions

diff --git a/src/output/oss_plugin.c b/src/output/oss_plugin.c
new file mode 100644
index 000000000..67ea11fe4
--- /dev/null
+++ b/src/output/oss_plugin.c
@@ -0,0 +1,571 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * OSS audio output (c) 2004, 2005, 2006, 2007 by Eric Wong <eric@petta-tech.com>
+ *                   and Warren Dukes <warren.dukes@gmail.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 "../output_api.h"
+
+#ifdef HAVE_OSS
+
+#include "../utils.h"
+#include "../log.h"
+
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+
+#if defined(__OpenBSD__) || defined(__NetBSD__)
+# include <soundcard.h>
+#else /* !(defined(__OpenBSD__) || defined(__NetBSD__) */
+# include <sys/soundcard.h>
+#endif /* !(defined(__OpenBSD__) || defined(__NetBSD__) */
+
+#ifdef WORDS_BIGENDIAN
+# define	AFMT_S16_MPD	 AFMT_S16_BE
+#else
+# define	AFMT_S16_MPD	 AFMT_S16_LE
+#endif /* WORDS_BIGENDIAN */
+
+typedef struct _OssData {
+	int fd;
+	const char *device;
+	struct audio_format audio_format;
+	int bitFormat;
+	int *supported[3];
+	int numSupported[3];
+	int *unsupported[3];
+	int numUnsupported[3];
+} OssData;
+
+enum oss_support {
+	OSS_SUPPORTED = 1,
+	OSS_UNSUPPORTED = 0,
+	OSS_UNKNOWN = -1,
+};
+
+enum oss_param {
+	OSS_RATE = 0,
+	OSS_CHANNELS = 1,
+	OSS_BITS = 2,
+};
+
+static enum oss_param
+getIndexForParam(unsigned param)
+{
+	enum oss_param idx = OSS_RATE;
+
+	switch (param) {
+	case SNDCTL_DSP_SPEED:
+		idx = OSS_RATE;
+		break;
+	case SNDCTL_DSP_CHANNELS:
+		idx = OSS_CHANNELS;
+		break;
+	case SNDCTL_DSP_SAMPLESIZE:
+		idx = OSS_BITS;
+		break;
+	}
+
+	return idx;
+}
+
+static int findSupportedParam(OssData * od, unsigned param, int val)
+{
+	int i;
+	enum oss_param idx = getIndexForParam(param);
+
+	for (i = 0; i < od->numSupported[idx]; i++) {
+		if (od->supported[idx][i] == val)
+			return 1;
+	}
+
+	return 0;
+}
+
+static int canConvert(int idx, int val)
+{
+	switch (idx) {
+	case OSS_BITS:
+		if (val != 16)
+			return 0;
+		break;
+	case OSS_CHANNELS:
+		if (val != 2)
+			return 0;
+		break;
+	}
+
+	return 1;
+}
+
+static int getSupportedParam(OssData * od, unsigned param, int val)
+{
+	int i;
+	enum oss_param idx = getIndexForParam(param);
+	int ret = -1;
+	int least = val;
+	int diff;
+
+	for (i = 0; i < od->numSupported[idx]; i++) {
+		diff = od->supported[idx][i] - val;
+		if (diff < 0)
+			diff = -diff;
+		if (diff < least) {
+			if (!canConvert(idx, od->supported[idx][i])) {
+				continue;
+			}
+			least = diff;
+			ret = od->supported[idx][i];
+		}
+	}
+
+	return ret;
+}
+
+static int findUnsupportedParam(OssData * od, unsigned param, int val)
+{
+	int i;
+	enum oss_param idx = getIndexForParam(param);
+
+	for (i = 0; i < od->numUnsupported[idx]; i++) {
+		if (od->unsupported[idx][i] == val)
+			return 1;
+	}
+
+	return 0;
+}
+
+static void addSupportedParam(OssData * od, unsigned param, int val)
+{
+	enum oss_param idx = getIndexForParam(param);
+
+	od->numSupported[idx]++;
+	od->supported[idx] = xrealloc(od->supported[idx],
+				      od->numSupported[idx] * sizeof(int));
+	od->supported[idx][od->numSupported[idx] - 1] = val;
+}
+
+static void addUnsupportedParam(OssData * od, unsigned param, int val)
+{
+	enum oss_param idx = getIndexForParam(param);
+
+	od->numUnsupported[idx]++;
+	od->unsupported[idx] = xrealloc(od->unsupported[idx],
+					od->numUnsupported[idx] *
+					sizeof(int));
+	od->unsupported[idx][od->numUnsupported[idx] - 1] = val;
+}
+
+static void removeSupportedParam(OssData * od, unsigned param, int val)
+{
+	int i;
+	int j = 0;
+	enum oss_param idx = getIndexForParam(param);
+
+	for (i = 0; i < od->numSupported[idx] - 1; i++) {
+		if (od->supported[idx][i] == val)
+			j = 1;
+		od->supported[idx][i] = od->supported[idx][i + j];
+	}
+
+	od->numSupported[idx]--;
+	od->supported[idx] = xrealloc(od->supported[idx],
+				      od->numSupported[idx] * sizeof(int));
+}
+
+static void removeUnsupportedParam(OssData * od, unsigned param, int val)
+{
+	int i;
+	int j = 0;
+	enum oss_param idx = getIndexForParam(param);
+
+	for (i = 0; i < od->numUnsupported[idx] - 1; i++) {
+		if (od->unsupported[idx][i] == val)
+			j = 1;
+		od->unsupported[idx][i] = od->unsupported[idx][i + j];
+	}
+
+	od->numUnsupported[idx]--;
+	od->unsupported[idx] = xrealloc(od->unsupported[idx],
+					od->numUnsupported[idx] *
+					sizeof(int));
+}
+
+static enum oss_support
+isSupportedParam(OssData * od, unsigned param, int val)
+{
+	if (findSupportedParam(od, param, val))
+		return OSS_SUPPORTED;
+	if (findUnsupportedParam(od, param, val))
+		return OSS_UNSUPPORTED;
+	return OSS_UNKNOWN;
+}
+
+static void supportParam(OssData * od, unsigned param, int val)
+{
+	enum oss_support supported = isSupportedParam(od, param, val);
+
+	if (supported == OSS_SUPPORTED)
+		return;
+
+	if (supported == OSS_UNSUPPORTED) {
+		removeUnsupportedParam(od, param, val);
+	}
+
+	addSupportedParam(od, param, val);
+}
+
+static void unsupportParam(OssData * od, unsigned param, int val)
+{
+	enum oss_support supported = isSupportedParam(od, param, val);
+
+	if (supported == OSS_UNSUPPORTED)
+		return;
+
+	if (supported == OSS_SUPPORTED) {
+		removeSupportedParam(od, param, val);
+	}
+
+	addUnsupportedParam(od, param, val);
+}
+
+static OssData *newOssData(void)
+{
+	OssData *ret = xmalloc(sizeof(OssData));
+
+	ret->device = NULL;
+	ret->fd = -1;
+
+	ret->supported[OSS_RATE] = NULL;
+	ret->supported[OSS_CHANNELS] = NULL;
+	ret->supported[OSS_BITS] = NULL;
+	ret->unsupported[OSS_RATE] = NULL;
+	ret->unsupported[OSS_CHANNELS] = NULL;
+	ret->unsupported[OSS_BITS] = NULL;
+
+	ret->numSupported[OSS_RATE] = 0;
+	ret->numSupported[OSS_CHANNELS] = 0;
+	ret->numSupported[OSS_BITS] = 0;
+	ret->numUnsupported[OSS_RATE] = 0;
+	ret->numUnsupported[OSS_CHANNELS] = 0;
+	ret->numUnsupported[OSS_BITS] = 0;
+
+	supportParam(ret, SNDCTL_DSP_SPEED, 48000);
+	supportParam(ret, SNDCTL_DSP_SPEED, 44100);
+	supportParam(ret, SNDCTL_DSP_CHANNELS, 2);
+	supportParam(ret, SNDCTL_DSP_SAMPLESIZE, 16);
+
+	return ret;
+}
+
+static void freeOssData(OssData * od)
+{
+	if (od->supported[OSS_RATE])
+		free(od->supported[OSS_RATE]);
+	if (od->supported[OSS_CHANNELS])
+		free(od->supported[OSS_CHANNELS]);
+	if (od->supported[OSS_BITS])
+		free(od->supported[OSS_BITS]);
+	if (od->unsupported[OSS_RATE])
+		free(od->unsupported[OSS_RATE]);
+	if (od->unsupported[OSS_CHANNELS])
+		free(od->unsupported[OSS_CHANNELS]);
+	if (od->unsupported[OSS_BITS])
+		free(od->unsupported[OSS_BITS]);
+
+	free(od);
+}
+
+#define OSS_STAT_NO_ERROR 	0
+#define OSS_STAT_NOT_CHAR_DEV	-1
+#define OSS_STAT_NO_PERMS	-2
+#define OSS_STAT_DOESN_T_EXIST	-3
+#define OSS_STAT_OTHER		-4
+
+static int oss_statDevice(const char *device, int *stErrno)
+{
+	struct stat st;
+
+	if (0 == stat(device, &st)) {
+		if (!S_ISCHR(st.st_mode)) {
+			return OSS_STAT_NOT_CHAR_DEV;
+		}
+	} else {
+		*stErrno = errno;
+
+		switch (errno) {
+		case ENOENT:
+		case ENOTDIR:
+			return OSS_STAT_DOESN_T_EXIST;
+		case EACCES:
+			return OSS_STAT_NO_PERMS;
+		default:
+			return OSS_STAT_OTHER;
+		}
+	}
+
+	return 0;
+}
+
+static const char *default_devices[] = { "/dev/sound/dsp", "/dev/dsp" };
+
+static int oss_testDefault(void)
+{
+	int fd, i;
+
+	for (i = ARRAY_SIZE(default_devices); --i >= 0; ) {
+		if ((fd = open(default_devices[i], O_WRONLY)) >= 0) {
+			xclose(fd);
+			return 0;
+		}
+		WARNING("Error opening OSS device \"%s\": %s\n",
+		        default_devices[i], strerror(errno));
+	}
+
+	return -1;
+}
+
+static void *oss_open_default(ConfigParam *param)
+{
+	int i;
+	int err[ARRAY_SIZE(default_devices)];
+	int ret[ARRAY_SIZE(default_devices)];
+
+	for (i = ARRAY_SIZE(default_devices); --i >= 0; ) {
+		ret[i] = oss_statDevice(default_devices[i], &err[i]);
+		if (ret[i] == 0) {
+			OssData *od = newOssData();
+			od->device = default_devices[i];
+			return od;
+		}
+	}
+
+	if (param)
+		ERROR("error trying to open specified OSS device"
+	              " at line %i\n", param->line);
+	else
+		ERROR("error trying to open default OSS device\n");
+
+	for (i = ARRAY_SIZE(default_devices); --i >= 0; ) {
+		const char *dev = default_devices[i];
+		switch(ret[i]) {
+		case OSS_STAT_DOESN_T_EXIST:
+			ERROR("%s not found\n", dev);
+			break;
+		case OSS_STAT_NOT_CHAR_DEV:
+			ERROR("%s is not a character device\n", dev);
+			break;
+		case OSS_STAT_NO_PERMS:
+			ERROR("%s: permission denied\n", dev);
+			break;
+		default:
+			ERROR("Error accessing %s: %s\n", dev, strerror(err[i]));
+		}
+	}
+	exit(EXIT_FAILURE);
+	return NULL; /* some compilers can be dumb... */
+}
+
+static void *oss_initDriver(mpd_unused struct audio_output *audioOutput,
+			    mpd_unused const struct audio_format *audio_format,
+			    ConfigParam * param)
+{
+	if (param) {
+		BlockParam *bp = getBlockParam(param, "device");
+		if (bp) {
+			OssData *od = newOssData();
+			od->device = bp->value;
+			return od;
+		}
+	}
+	return oss_open_default(param);
+}
+
+static void oss_finishDriver(void *data)
+{
+	OssData *od = data;
+
+	freeOssData(od);
+}
+
+static int setParam(OssData * od, unsigned param, int *value)
+{
+	int val = *value;
+	int copy;
+	enum oss_support supported = isSupportedParam(od, param, val);
+
+	do {
+		if (supported == OSS_UNSUPPORTED) {
+			val = getSupportedParam(od, param, val);
+			if (copy < 0)
+				return -1;
+		}
+		copy = val;
+		if (ioctl(od->fd, param, &copy)) {
+			unsupportParam(od, param, val);
+			supported = OSS_UNSUPPORTED;
+		} else {
+			if (supported == OSS_UNKNOWN) {
+				supportParam(od, param, val);
+				supported = OSS_SUPPORTED;
+			}
+			val = copy;
+		}
+	} while (supported == OSS_UNSUPPORTED);
+
+	*value = val;
+
+	return 0;
+}
+
+static void oss_close(OssData * od)
+{
+	if (od->fd >= 0)
+		while (close(od->fd) && errno == EINTR) ;
+	od->fd = -1;
+}
+
+static int oss_open(OssData *od)
+{
+	int tmp;
+
+	if ((od->fd = open(od->device, O_WRONLY)) < 0) {
+		ERROR("Error opening OSS device \"%s\": %s\n", od->device,
+		      strerror(errno));
+		goto fail;
+	}
+
+	tmp = od->audio_format.channels;
+	if (setParam(od, SNDCTL_DSP_CHANNELS, &tmp)) {
+		ERROR("OSS device \"%s\" does not support %u channels: %s\n",
+		      od->device, od->audio_format.channels, strerror(errno));
+		goto fail;
+	}
+	od->audio_format.channels = tmp;
+
+	tmp = od->audio_format.sample_rate;
+	if (setParam(od, SNDCTL_DSP_SPEED, &tmp)) {
+		ERROR("OSS device \"%s\" does not support %u Hz audio: %s\n",
+		      od->device, od->audio_format.sample_rate,
+		      strerror(errno));
+		goto fail;
+	}
+	od->audio_format.sample_rate = tmp;
+
+	switch (od->audio_format.bits) {
+	case 8:
+		tmp = AFMT_S8;
+		break;
+	case 16:
+		tmp = AFMT_S16_MPD;
+	}
+
+	if (setParam(od, SNDCTL_DSP_SAMPLESIZE, &tmp)) {
+		ERROR("OSS device \"%s\" does not support %u bit audio: %s\n",
+		      od->device, tmp, strerror(errno));
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	oss_close(od);
+	return -1;
+}
+
+static int oss_openDevice(void *data,
+			  struct audio_format *audioFormat)
+{
+	int ret;
+	OssData *od = data;
+
+	od->audio_format = *audioFormat;
+
+	if ((ret = oss_open(od)) < 0)
+		return ret;
+
+	*audioFormat = od->audio_format;
+
+	DEBUG("oss device \"%s\" will be playing %u bit %u channel audio at "
+	      "%u Hz\n", od->device,
+	      od->audio_format.bits, od->audio_format.channels,
+	      od->audio_format.sample_rate);
+
+	return ret;
+}
+
+static void oss_closeDevice(void *data)
+{
+	OssData *od = data;
+
+	oss_close(od);
+}
+
+static void oss_dropBufferedAudio(void *data)
+{
+	OssData *od = data;
+
+	if (od->fd >= 0) {
+		ioctl(od->fd, SNDCTL_DSP_RESET, 0);
+		oss_close(od);
+	}
+}
+
+static int oss_playAudio(void *data,
+			 const char *playChunk, size_t size)
+{
+	OssData *od = data;
+	ssize_t ret;
+
+	/* reopen the device since it was closed by dropBufferedAudio */
+	if (od->fd < 0 && oss_open(od) < 0)
+		return -1;
+
+	while (size > 0) {
+		ret = write(od->fd, playChunk, size);
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+			ERROR("closing oss device \"%s\" due to write error: "
+			      "%s\n", od->device, strerror(errno));
+			oss_closeDevice(od);
+			return -1;
+		}
+		playChunk += ret;
+		size -= ret;
+	}
+
+	return 0;
+}
+
+const struct audio_output_plugin ossPlugin = {
+	.name = "oss",
+	.test_default_device = oss_testDefault,
+	.init = oss_initDriver,
+	.finish = oss_finishDriver,
+	.open = oss_openDevice,
+	.play = oss_playAudio,
+	.cancel = oss_dropBufferedAudio,
+	.close = oss_closeDevice,
+};
+
+#else /* HAVE OSS */
+
+DISABLED_AUDIO_OUTPUT_PLUGIN(ossPlugin)
+#endif /* HAVE_OSS */