--- /dev/null
+/* GStreamer
+ * Copyright (C) <2001,2002> Richard Boulton <richard-gst@tartarus.org>
+ *
+ * Based on example.c:
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <gst/gst.h>
+#include <esd.h>
+
+#define GST_TYPE_ESDMON \
+ (gst_esdmon_get_type())
+#define GST_ESDMON(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ESDMON,GstEsdmon))
+#define GST_ESDMON_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ESDMON,GstEsdmon))
+#define GST_IS_ESDMON(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ESDMON))
+#define GST_IS_ESDMON_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ESDMON))
+
+typedef enum {
+ GST_ESDMON_OPEN = GST_ELEMENT_FLAG_LAST,
+ GST_ESDMON_FLAG_LAST = GST_ELEMENT_FLAG_LAST+2,
+} GstEsdSrcFlags;
+
+typedef struct _GstEsdmon GstEsdmon;
+typedef struct _GstEsdmonClass GstEsdmonClass;
+
+struct _GstEsdmon {
+ GstElement element;
+
+ GstPad *srcpad;
+
+ gchar* host;
+
+ int fd;
+
+ gint depth;
+ gint channels;
+ gint frequency;
+
+ guint64 basetime;
+ guint64 curoffset;
+ guint64 bytes_per_read;
+};
+
+struct _GstEsdmonClass {
+ GstElementClass parent_class;
+};
+
+GType gst_esdmon_get_type(void);
+
+/* elementfactory information */
+static GstElementDetails esdmon_details = {
+ "Esound audio monitor",
+ "Src/Esdmon",
+ "Monitors audio from an esound server",
+ VERSION,
+ "Richard Boulton <richard-gst@tartarus.org>",
+ "(C) 2002",
+};
+
+/* Signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_DEPTH,
+ ARG_BYTESPERREAD,
+ ARG_CUROFFSET,
+ ARG_CHANNELS,
+ ARG_RATE,
+ ARG_HOST,
+};
+
+GST_PADTEMPLATE_FACTORY (src_factory,
+ "src", /* the name of the pads */
+ GST_PAD_SRC, /* type of the pad */
+ GST_PAD_ALWAYS, /* ALWAYS/SOMETIMES */
+ GST_CAPS_NEW (
+ "esdmon_src8", /* the name of the caps */
+ "audio/raw", /* the mime type of the caps */
+ /* Properties follow: */
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT (0),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "signed", GST_PROPS_BOOLEAN (TRUE),
+ "width", GST_PROPS_INT (8),
+ "depth", GST_PROPS_INT (8),
+ "rate", GST_PROPS_INT_RANGE (8000, 96000),
+ "channels", GST_PROPS_LIST (GST_PROPS_INT (1), GST_PROPS_INT (2))
+ ),
+ GST_CAPS_NEW (
+ "esdmon_src16", /* the name of the caps */
+ "audio/raw", /* the mime type of the caps */
+ /* Properties follow: */
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT (0),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "signed", GST_PROPS_BOOLEAN (TRUE),
+ "width", GST_PROPS_INT (16),
+ "depth", GST_PROPS_INT (16),
+ "rate", GST_PROPS_INT_RANGE (8000, 96000),
+ "channels", GST_PROPS_LIST (GST_PROPS_INT (1), GST_PROPS_INT (2))
+ )
+);
+
+static void gst_esdmon_class_init (GstEsdmonClass *klass);
+static void gst_esdmon_init (GstEsdmon *esdmon);
+
+static gboolean gst_esdmon_open_audio (GstEsdmon *src);
+static void gst_esdmon_close_audio (GstEsdmon *src);
+static GstElementStateReturn gst_esdmon_change_state (GstElement *element);
+static gboolean gst_esdmon_sync_parms (GstEsdmon *esdmon);
+
+static GstBuffer * gst_esdmon_get (GstPad *pad);
+
+static void gst_esdmon_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec);
+static void gst_esdmon_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec);
+
+#define GST_TYPE_ESDMON_DEPTHS (gst_esdmon_depths_get_type())
+static GType
+gst_esdmon_depths_get_type (void)
+{
+ static GType esdmon_depths_type = 0;
+ static GEnumValue esdmon_depths[] = {
+ {8, "8", "8 Bits"},
+ {16, "16", "16 Bits"},
+ {0, NULL, NULL},
+ };
+ if (!esdmon_depths_type) {
+ esdmon_depths_type = g_enum_register_static("GstEsdmonDepths", esdmon_depths);
+ }
+ return esdmon_depths_type;
+}
+
+#define GST_TYPE_ESDMON_CHANNELS (gst_esdmon_channels_get_type())
+static GType
+gst_esdmon_channels_get_type (void)
+{
+ static GType esdmon_channels_type = 0;
+ static GEnumValue esdmon_channels[] = {
+ {1, "1", "Mono"},
+ {2, "2", "Stereo"},
+ {0, NULL, NULL},
+ };
+ if (!esdmon_channels_type) {
+ esdmon_channels_type = g_enum_register_static("GstEsdmonChannels", esdmon_channels);
+ }
+ return esdmon_channels_type;
+}
+
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_esdmon_signals[LAST_SIGNAL] = { 0 }; */
+
+GType
+gst_esdmon_get_type (void)
+{
+ static GType esdmon_type = 0;
+
+ if (!esdmon_type) {
+ static const GTypeInfo esdmon_info = {
+ sizeof(GstEsdmonClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_esdmon_class_init,
+ NULL,
+ NULL,
+ sizeof(GstEsdmon),
+ 0,
+ (GInstanceInitFunc)gst_esdmon_init,
+ };
+ esdmon_type = g_type_register_static(GST_TYPE_ELEMENT, "GstEsdmon", &esdmon_info, 0);
+ }
+ return esdmon_type;
+}
+
+static void
+gst_esdmon_class_init (GstEsdmonClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BYTESPERREAD,
+ g_param_spec_ulong("bytes_per_read","bytes_per_read","bytes_per_read",
+ 0,G_MAXULONG,0,G_PARAM_READWRITE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CUROFFSET,
+ g_param_spec_ulong("curoffset","curoffset","curoffset",
+ 0,G_MAXULONG,0,G_PARAM_READABLE)); // CHECKME
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEPTH,
+ g_param_spec_enum("depth","depth","depth",
+ GST_TYPE_ESDMON_DEPTHS,16,G_PARAM_READWRITE)); /* CHECKME! */
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS,
+ g_param_spec_enum("channels","channels","channels",
+ GST_TYPE_ESDMON_CHANNELS,2,G_PARAM_READWRITE)); /* CHECKME! */
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RATE,
+ g_param_spec_int("frequency","frequency","frequency",
+ G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
+ g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HOST,
+ g_param_spec_string("host","host","host",
+ NULL, G_PARAM_READWRITE)); /* CHECKME */
+
+ gobject_class->set_property = gst_esdmon_set_property;
+ gobject_class->get_property = gst_esdmon_get_property;
+
+ gstelement_class->change_state = gst_esdmon_change_state;
+}
+
+static void
+gst_esdmon_init(GstEsdmon *esdmon)
+{
+ esdmon->srcpad = gst_pad_new_from_template (
+ GST_PADTEMPLATE_GET (src_factory), "src");
+ gst_pad_set_get_function(esdmon->srcpad, gst_esdmon_get);
+ gst_element_add_pad(GST_ELEMENT(esdmon), esdmon->srcpad);
+
+ esdmon->fd = -1;
+ /* FIXME: get default from somewhere better than just putting them inline. */
+ esdmon->depth = 16;
+ esdmon->channels = 2;
+ esdmon->frequency = 44100;
+ esdmon->host = NULL;
+ esdmon->bytes_per_read = 4096;
+ esdmon->curoffset = 0;
+ esdmon->basetime = 0;
+}
+
+static gboolean
+gst_esdmon_sync_parms (GstEsdmon *esdmon)
+{
+ g_return_val_if_fail (esdmon != NULL, FALSE);
+ g_return_val_if_fail (GST_IS_ESDMON (esdmon), FALSE);
+
+ if (esdmon->fd == -1) return TRUE;
+
+ /* Need to set fd to use new parameters: only way to do this is to reopen. */
+ gst_esdmon_close_audio (esdmon);
+ return gst_esdmon_open_audio (esdmon);
+}
+
+static GstBuffer *
+gst_esdmon_get (GstPad *pad)
+{
+ GstEsdmon *esdmon;
+ GstBuffer *buf;
+ glong readbytes;
+ glong readsamples;
+
+ g_return_val_if_fail (pad != NULL, NULL);
+ esdmon = GST_ESDMON(gst_pad_get_parent (pad));
+
+ GST_DEBUG (GST_CAT_PLUGIN_INFO, "attempting to read something from esdmon\n");
+
+ buf = gst_buffer_new ();
+ g_return_val_if_fail (buf, NULL);
+
+ GST_BUFFER_DATA (buf) = (gpointer)g_malloc (esdmon->bytes_per_read);
+
+ readbytes = read (esdmon->fd,
+ GST_BUFFER_DATA (buf),
+ esdmon->bytes_per_read);
+
+ if (readbytes == 0) {
+ gst_element_set_eos (GST_ELEMENT (esdmon));
+ return NULL;
+ }
+ if (!GST_PAD_CAPS (pad)) {
+ /* set caps on src pad */
+ if (!gst_pad_try_set_caps (esdmon->srcpad,
+ GST_CAPS_NEW (
+ "oss_src",
+ "audio/raw",
+ "format", GST_PROPS_STRING ("int"),
+ "law", GST_PROPS_INT (0), //FIXME
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER), //FIXME
+ "signed", GST_PROPS_BOOLEAN (TRUE), //FIXME
+ "width", GST_PROPS_INT (esdmon->depth),
+ "depth", GST_PROPS_INT (esdmon->depth),
+ "rate", GST_PROPS_INT (esdmon->frequency),
+ "channels", GST_PROPS_INT (esdmon->channels)
+ )))
+ {
+ gst_element_error (GST_ELEMENT (esdmon), "could not set caps");
+ return NULL;
+ }
+ }
+
+ GST_BUFFER_SIZE (buf) = readbytes;
+ GST_BUFFER_OFFSET (buf) = esdmon->curoffset;
+ GST_BUFFER_TIMESTAMP (buf) = esdmon->basetime +
+ esdmon->curoffset * 1000000LL / esdmon->frequency;
+
+ readsamples = readbytes / esdmon->channels;
+ if (esdmon->depth == 16) readsamples /= 2;
+ esdmon->curoffset += readsamples;
+
+ GST_DEBUG (GST_CAT_PLUGIN_INFO, "pushed buffer from esdmon of %ld bytes, timestamp %lld\n", readbytes, GST_BUFFER_TIMESTAMP (buf));
+ return buf;
+}
+
+static void
+gst_esdmon_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstEsdmon *esdmon;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ESDMON(object));
+ esdmon = GST_ESDMON(object);
+
+ switch (prop_id) {
+ case ARG_BYTESPERREAD:
+ esdmon->bytes_per_read = g_value_get_ulong (value);
+ /* No need to sync params - will just happen on next read. */
+ break;
+ case ARG_DEPTH:
+ esdmon->depth = g_value_get_enum (value);
+ gst_esdmon_sync_parms (esdmon);
+ break;
+ case ARG_CHANNELS:
+ esdmon->channels = g_value_get_enum (value);
+ gst_esdmon_sync_parms (esdmon);
+ break;
+ case ARG_RATE:
+ /* Preserve the timestamps */
+ esdmon->basetime = esdmon->curoffset * 1000000LL / esdmon->frequency;
+ esdmon->curoffset = 0;
+
+ /* Set the new frequency */
+ esdmon->frequency = g_value_get_int (value);
+ gst_esdmon_sync_parms (esdmon);
+ break;
+ case ARG_HOST:
+ if (esdmon->host != NULL) g_free(esdmon->host);
+ if (g_value_get_string (value) == NULL)
+ esdmon->host = NULL;
+ else
+ esdmon->host = g_strdup (g_value_get_string (value));
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_esdmon_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstEsdmon *esdmon;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_ESDMON(object));
+ esdmon = GST_ESDMON(object);
+
+ switch (prop_id) {
+ case ARG_BYTESPERREAD:
+ g_value_set_ulong (value, esdmon->bytes_per_read);
+ break;
+ case ARG_CUROFFSET:
+ g_value_set_ulong (value, esdmon->curoffset);
+ break;
+ case ARG_DEPTH:
+ g_value_set_enum (value, esdmon->depth);
+ break;
+ case ARG_CHANNELS:
+ g_value_set_enum (value, esdmon->channels);
+ break;
+ case ARG_RATE:
+ g_value_set_int (value, esdmon->frequency);
+ break;
+ case ARG_HOST:
+ g_value_set_string (value, esdmon->host);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+ GstElementFactory *factory;
+
+ factory = gst_elementfactory_new("esdmon", GST_TYPE_ESDMON,
+ &esdmon_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+
+ gst_elementfactory_add_padtemplate(factory, GST_PADTEMPLATE_GET (src_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "esdmon",
+ plugin_init
+};
+
+static gboolean
+gst_esdmon_open_audio (GstEsdmon *src)
+{
+ /* Name used by esound for this connection. */
+ const char * connname = "GStreamer";
+
+ /* Bitmap describing audio format. */
+ esd_format_t esdformat = ESD_STREAM | ESD_PLAY;
+
+ g_return_val_if_fail (src->fd == -1, FALSE);
+
+ if (src->depth == 16) esdformat |= ESD_BITS16;
+ else if (src->depth == 8) esdformat |= ESD_BITS8;
+ else {
+ GST_DEBUG (0, "esdmon: invalid bit depth (%d)\n", src->depth);
+ return FALSE;
+ }
+
+ if (src->channels == 2) esdformat |= ESD_STEREO;
+ else if (src->channels == 1) esdformat |= ESD_MONO;
+ else {
+ GST_DEBUG (0, "esdmon: invalid number of channels (%d)\n", src->channels);
+ return FALSE;
+ }
+
+ GST_DEBUG (0, "esdmon: attempting to open connection to esound server\n");
+ src->fd = esd_monitor_stream(esdformat, src->frequency, src->host, connname);
+ if ( src->fd < 0 ) {
+ GST_DEBUG (0, "esdmon: can't open connection to esound server\n");
+ return FALSE;
+ }
+
+ GST_FLAG_SET (src, GST_ESDMON_OPEN);
+
+ return TRUE;
+}
+
+static void
+gst_esdmon_close_audio (GstEsdmon *src)
+{
+ if (src->fd < 0) return;
+
+ close(src->fd);
+ src->fd = -1;
+
+ GST_FLAG_UNSET (src, GST_ESDMON_OPEN);
+
+ GST_DEBUG (0, "esdmon: closed sound device\n");
+}
+
+static GstElementStateReturn
+gst_esdmon_change_state (GstElement *element)
+{
+ g_return_val_if_fail (GST_IS_ESDMON (element), FALSE);
+
+ /* if going down into NULL state, close the fd if it's open */
+ if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
+ if (GST_FLAG_IS_SET (element, GST_ESDMON_OPEN))
+ gst_esdmon_close_audio (GST_ESDMON (element));
+ /* otherwise (READY or higher) we need to open the fd */
+ } else {
+ if (!GST_FLAG_IS_SET (element, GST_ESDMON_OPEN)) {
+ if (!gst_esdmon_open_audio (GST_ESDMON (element)))
+ return GST_STATE_FAILURE;
+ }
+ }
+
+ if (GST_ELEMENT_CLASS (parent_class)->change_state)
+ return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+ return GST_STATE_SUCCESS;
+}
+
projects / platform / upstream / gst-plugins-good.git / commitdiff