The first attempt to support MAS. Dont expect it to work :)

Original commit message from CVS:
The first attempt to support MAS. Dont expect it to work :)

1 files changed, 546 insertions, 0 deletions

diff --git a/ext/mas/massink.c b/ext/mas/massink.c
new file mode 100644
index 00000000..1b965beb
--- /dev/null
+++ b/ext/mas/massink.c
@@ -0,0 +1,546 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * Most of the code from maswavplay and esdsink
+ * 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 "massink.h"
+
+#define  BUFFER_SIZE           640
+#define  BUFFER_TIME_NS        3628118
+#define  FORCED_STABLE_LOOPS   10
+#define  NANOSLEEP_GRANULARITY 100000
+
+
+/* elementfactory information */
+static GstElementDetails massink_details = {
+  "Esound audio sink",
+  "Sink/Audio",
+  "LGPL",
+  "Plays audio to a MAS server",
+  VERSION,
+  "Zeeshan Ali <zak147@yahoo.com>",
+  "(C) 2003",
+};
+
+/* Signals and args */
+enum {
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum {
+  ARG_0,
+  ARG_MUTE,
+  ARG_DEPTH,
+  ARG_CHANNELS,
+  ARG_RATE,
+  ARG_HOST,
+};
+
+GST_PAD_TEMPLATE_FACTORY (sink_factory,
+  "sink",					/* the name of the pads */
+  GST_PAD_SINK,				/* type of the pad */
+  GST_PAD_ALWAYS,			/* ALWAYS/SOMETIMES */
+  GST_CAPS_NEW (
+    "massink_sink8",				/* the name of the caps */
+    "audio/x-wav",				/* the mime type of the caps */
+    NULL
+  )
+);
+
+static void			gst_massink_class_init		(GstMassinkClass *klass);
+static void			gst_massink_init		(GstMassink *massink);
+static void 			gst_massink_set_clock 		(GstElement *element, GstClock *clock);
+static gboolean			gst_massink_open_audio		(GstMassink *sink);
+//static void			gst_massink_close_audio		(GstMassink *sink);
+static GstElementStateReturn	gst_massink_change_state	(GstElement *element);
+static gboolean			gst_massink_sync_parms		(GstMassink *massink);
+static GstPadLinkReturn	gst_massink_sinkconnect		(GstPad *pad, GstCaps *caps);
+
+static void			gst_massink_chain		(GstPad *pad, GstBuffer *buf);
+
+static void			gst_massink_set_property	(GObject *object, guint prop_id, 
+								 const GValue *value, GParamSpec *pspec);
+static void			gst_massink_get_property	(GObject *object, guint prop_id, 
+								 GValue *value, GParamSpec *pspec);
+
+#define GST_TYPE_MASSINK_DEPTHS (gst_massink_depths_get_type())
+static GType
+gst_massink_depths_get_type (void)
+{
+  static GType massink_depths_type = 0;
+  static GEnumValue massink_depths[] = {
+    {8, "8", "8 Bits"},
+    {16, "16", "16 Bits"},
+    {0, NULL, NULL},
+  };
+  if (!massink_depths_type) {
+    massink_depths_type = g_enum_register_static("GstMassinkDepths", massink_depths);
+  }
+  return massink_depths_type;
+}
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_massink_signals[LAST_SIGNAL] = { 0 }; */
+
+GType
+gst_massink_get_type (void)
+{
+  static GType massink_type = 0;
+
+  if (!massink_type) {
+    static const GTypeInfo massink_info = {
+      sizeof(GstMassinkClass),      NULL,
+      NULL,
+      (GClassInitFunc)gst_massink_class_init,
+      NULL,
+      NULL,
+      sizeof(GstMassink),
+      0,
+      (GInstanceInitFunc)gst_massink_init,
+    };
+    massink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstMassink", &massink_info, 0);
+  }
+  return massink_type;
+}
+
+static void
+gst_massink_class_init (GstMassinkClass *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_MUTE,
+    g_param_spec_boolean("mute","mute","mute",
+                         TRUE,G_PARAM_READWRITE)); /* CHECKME */
+  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEPTH,
+    g_param_spec_enum("depth","depth","depth",
+                      GST_TYPE_MASSINK_DEPTHS,16,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_massink_set_property;
+  gobject_class->get_property = gst_massink_get_property;
+
+  gstelement_class->change_state = gst_massink_change_state;
+  gstelement_class->set_clock = gst_massink_set_clock;
+}
+
+static void
+gst_massink_set_clock (GstElement *element, GstClock *clock)
+{
+  GstMassink *massink;
+	      
+  massink = GST_MASSINK (element);
+
+  massink->clock = clock;
+}
+
+static void
+gst_massink_init(GstMassink *massink)
+{
+  massink->sinkpad = gst_pad_new_from_template (
+		  GST_PAD_TEMPLATE_GET (sink_factory), "sink");
+  gst_element_add_pad(GST_ELEMENT(massink), massink->sinkpad);
+  gst_pad_set_chain_function(massink->sinkpad, GST_DEBUG_FUNCPTR(gst_massink_chain));
+  gst_pad_set_link_function(massink->sinkpad, gst_massink_sinkconnect);
+
+  massink->mute = FALSE;
+  massink->format = 16;
+  massink->depth = 16;
+  massink->channels = 2;
+  massink->frequency = 44100;
+  massink->host = NULL;
+}
+
+static gboolean
+gst_massink_sync_parms (GstMassink *massink)
+{
+  g_return_val_if_fail (massink != NULL, FALSE);
+  g_return_val_if_fail (GST_IS_MASSINK (massink), FALSE);
+
+  //gst_massink_close_audio (massink);
+  //return gst_massink_open_audio (massink);
+  return 1;
+}
+
+static GstPadLinkReturn
+gst_massink_sinkconnect (GstPad *pad, GstCaps *caps)
+{
+  GstMassink *massink;
+
+  massink = GST_MASSINK (gst_pad_get_parent (pad));
+
+  if (!GST_CAPS_IS_FIXED (caps))
+    return GST_PAD_LINK_DELAYED;
+  
+  if (gst_massink_sync_parms (massink))
+    return GST_PAD_LINK_OK;
+
+  return GST_PAD_LINK_REFUSED;
+}
+
+static void
+gst_massink_chain (GstPad *pad, GstBuffer *buf)
+{
+  gint32 err;
+    
+  g_return_if_fail(pad != NULL);
+  g_return_if_fail(GST_IS_PAD(pad));
+  g_return_if_fail(buf != NULL);
+
+  GstMassink *massink = GST_MASSINK (gst_pad_get_parent (pad));
+
+  if (massink->clock) {
+    GstClockID id = gst_clock_new_single_shot_id (massink->clock, GST_BUFFER_TIMESTAMP (buf));
+
+    GST_DEBUG (0, "massink: clock wait: %llu\n", GST_BUFFER_TIMESTAMP (buf));
+    gst_element_clock_wait (GST_ELEMENT (massink), id, NULL);
+    gst_clock_id_free (id);
+  }
+
+  if (GST_BUFFER_DATA (buf) != NULL) {
+    if (!massink->mute) {
+      GST_DEBUG (0, "massink: data=%p size=%d", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
+      if (GST_BUFFER_SIZE (buf) > BUFFER_SIZE) {
+  	gst_buffer_unref (buf);
+	return;
+      }
+
+      massink->data->length = GST_BUFFER_SIZE (buf);
+	
+      memcpy (massink->data->segment, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); 
+	  
+      err = mas_send (massink->audio_channel, massink->data);
+	
+      if (err < 0) {
+    	 g_print ("error sending data to MAS server\n");
+  	 gst_buffer_unref (buf);
+	 return;
+      }
+      
+      /* FIXME: Please correct the Timestamping if its wrong */
+      massink->data->header.media_timestamp += massink->data->length / 4;
+      massink->data->header.sequence++;
+    }
+  }
+  
+  gst_buffer_unref (buf);
+}
+
+static void
+gst_massink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+  GstMassink *massink;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail(GST_IS_MASSINK(object));
+  massink = GST_MASSINK(object);
+
+  switch (prop_id) {
+    case ARG_MUTE:
+      massink->mute = g_value_get_boolean (value);
+      break;
+    case ARG_DEPTH:
+      massink->depth = g_value_get_enum (value);
+      gst_massink_sync_parms (massink);
+      break;
+    case ARG_CHANNELS:
+      massink->channels = g_value_get_enum (value);
+      gst_massink_sync_parms (massink);
+      break;
+    case ARG_RATE:
+      massink->frequency = g_value_get_int (value);
+      gst_massink_sync_parms (massink);
+      break;
+    case ARG_HOST:
+      if (massink->host != NULL) g_free(massink->host);
+      if (g_value_get_string (value) == NULL)
+	  massink->host = NULL;
+      else
+	  massink->host = g_strdup (g_value_get_string (value));
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+gst_massink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+  GstMassink *massink;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail(GST_IS_MASSINK(object));
+  massink = GST_MASSINK(object);
+
+  switch (prop_id) {
+    case ARG_MUTE:
+      g_value_set_boolean (value, massink->mute);
+      break;
+    case ARG_DEPTH:
+      g_value_set_enum (value, massink->depth);
+      break;
+    case ARG_CHANNELS:
+      g_value_set_enum (value, massink->channels);
+      break;
+    case ARG_RATE:
+      g_value_set_int (value, massink->frequency);
+      break;
+    case ARG_HOST:
+      g_value_set_string (value, massink->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_element_factory_new("massink", GST_TYPE_MASSINK,
+				   &massink_details);
+  g_return_val_if_fail(factory != NULL, FALSE);
+
+  gst_element_factory_add_pad_template(factory, GST_PAD_TEMPLATE_GET (sink_factory));
+
+  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+  return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "massink",
+  plugin_init
+};
+
+static gboolean
+gst_massink_open_audio (GstMassink *massink)
+{
+  gint32     err;
+  char       *ratestring = g_malloc (16);
+  char       *bps = g_malloc (8);
+    
+  struct mas_data_characteristic* dc;
+  
+  g_print ("Connecting to MAS.\n");
+  masc_log_verbosity (MAS_VERBLVL_DEBUG);
+  err = mas_init();
+    
+  if (err < 0) {
+     GST_DEBUG(err, "connection with local MAS server failed.");
+     exit (1);
+  }    
+    
+  GST_DEBUG (0, "Establishing audio output channel.");
+  mas_make_data_channel ("Gstreamer", &massink->audio_channel, &massink->audio_source, &massink->audio_sink);
+  mas_asm_get_port_by_name (0, "default_mix_sink", &massink->mix_sink);
+
+  GST_DEBUG (0, "Instantiating endian device.");
+  err = mas_asm_instantiate_device ("endian", 0, 0, &massink->endian);
+    
+  if (err < 0) {
+     GST_DEBUG(0, "Failed to instantiate endian converter device");
+     exit(1);
+  }
+  
+  mas_asm_get_port_by_name (massink->endian, "endian_sink", &massink->endian_sink);
+  mas_asm_get_port_by_name (massink->endian, "endian_source", &massink->endian_source);
+
+  sprintf (bps, "%u", massink->depth);
+  sprintf (ratestring, "%u", massink->frequency);
+
+  GST_DEBUG (0, "Connecting net -> endian.");
+  masc_make_dc (&dc, 6);
+    
+  /* wav weirdness: 8 bit data is unsigned, >8 data is signed. */
+  masc_append_dc_key_value (dc, "format", (massink->depth==8) ? "ulinear":"linear");
+  masc_append_dc_key_value (dc, "resolution", bps);
+  masc_append_dc_key_value (dc, "sampling rate", ratestring);
+  masc_append_dc_key_value (dc, "channels", "2");
+  masc_append_dc_key_value (dc, "endian", "little");
+  err = mas_asm_connect_source_sink (massink->audio_source, massink->endian_sink, dc);
+  
+  if ( err < 0 ) {
+     GST_DEBUG(err, "Failed to connect net audio output to endian");
+     return -1;
+  }
+    
+  /* The next device is 'if needed' only. After the following if()
+     statement, open_source will contain the current unconnected
+     source in the path (will be either endian_source or
+     squant_source in this case)
+  */
+    
+  massink->open_source = massink->endian_source;
+    
+  if (massink->depth != 16) {
+     GST_DEBUG (0, "Sample resolution is not 16 bit/sample, instantiating squant device.");
+     err = mas_asm_instantiate_device ("squant", 0, 0, &massink->squant);
+     if (err < 0) {
+	 GST_DEBUG(err, "Failed to instantiate squant device");
+         return -1;
+     }
+	
+     mas_asm_get_port_by_name (massink->squant, "squant_sink", &massink->squant_sink);
+     mas_asm_get_port_by_name (massink->squant, "squant_source", &massink->squant_source);
+
+     GST_DEBUG (0, "Connecting endian -> squant.");
+
+     masc_make_dc (&dc, 6);
+     masc_append_dc_key_value (dc,"format",(massink->depth==8) ? "ulinear":"linear");
+     masc_append_dc_key_value (dc, "resolution", bps);
+     masc_append_dc_key_value (dc, "sampling rate", ratestring);
+     masc_append_dc_key_value (dc, "channels", "2");
+     masc_append_dc_key_value (dc, "endian", "host");
+     err = mas_asm_connect_source_sink (massink->endian_source, massink->squant_sink, dc);
+        
+     if (err < 0) {
+        GST_DEBUG(err, "Failed to connect endian output to squant");
+        return -1;
+    }
+
+    /* sneaky: the squant device is optional -> pretend it isn't there */
+    massink->open_source = massink->squant_source;
+ }
+
+    
+   /* Another 'if necessary' device, as above */
+   if (massink->frequency != 44100) {
+     GST_DEBUG (0, "Sample rate is not 44100, instantiating srate device.");
+     err = mas_asm_instantiate_device ("srate", 0, 0, &massink->srate);
+	
+     if (err < 0) {
+	GST_DEBUG (err, "Failed to instantiate srate device");
+        return -1;
+     }
+	
+     mas_asm_get_port_by_name (massink->srate, "sink", &massink->srate_sink);
+     mas_asm_get_port_by_name (massink->srate, "source", &massink->srate_source);
+	
+     GST_DEBUG (0, "Connecting to srate.");
+     masc_make_dc (&dc, 6);
+     masc_append_dc_key_value (dc, "format", "linear");
+     masc_append_dc_key_value (dc, "resolution", "16");
+     masc_append_dc_key_value (dc, "sampling rate", ratestring);
+     masc_append_dc_key_value (dc, "channels", "2");
+     masc_append_dc_key_value (dc, "endian", "host");
+	
+     err = mas_asm_connect_source_sink (massink->open_source, massink->srate_sink, dc);
+	
+     if ( err < 0 ) {
+	GST_DEBUG(err, "Failed to connect to srate");
+        return -1;
+     }
+
+        
+     massink->open_source = massink->srate_source;        
+  }
+
+  GST_DEBUG(0, "Connecting to mix.");
+  masc_make_dc(&dc, 6);
+  masc_append_dc_key_value (dc, "format", "linear");
+  masc_append_dc_key_value (dc, "resolution", "16");
+  masc_append_dc_key_value (dc, "sampling rate", "44100");
+  masc_append_dc_key_value (dc, "channels", "2");
+  masc_append_dc_key_value (dc, "endian", "host");
+    
+  err = mas_asm_connect_source_sink (massink->open_source, massink->mix_sink, dc);
+    
+  if ( err < 0 ) {
+    GST_DEBUG(err, "Failed to connect to mixer");
+    return -1;
+  }
+  
+  GST_FLAG_SET (massink, GST_MASSINK_OPEN);
+
+  masc_make_mas_data (&massink->data, BUFFER_SIZE);
+      
+  massink->data->header.type = 10;
+  
+  massink->data->header.media_timestamp = 0;
+  massink->data->header.sequence = 0;
+      
+  return TRUE;
+}
+
+/*static void
+gst_massink_close_audio (GstMassink *massink)
+{
+  mas_free_device(massink->endian);
+  mas_free_device(massink->srate);
+  mas_free_device(massink->squant);
+  
+  mas_free_port(massink->mix_sink);
+  mas_free_port(massink->srate_source);
+  mas_free_port(massink->srate_sink);
+  mas_free_port(massink->audio_source);
+  mas_free_port(massink->audio_sink);
+  mas_free_port(massink->endian_source);
+  mas_free_port(massink->endian_sink);
+  mas_free_port(massink->squant_source);
+  mas_free_port(massink->squant_sink);
+  mas_free_port(massink->open_source);
+
+  mas_free_channel (massink->audio_channel);
+  masc_destroy_mas_data (massink->data);
+
+  g_free (ratestring);
+  g_free (bps);
+  
+  GST_FLAG_UNSET (massink, GST_MASSINK_OPEN);
+
+  GST_DEBUG (0, "massink: closed sound channel");
+}*/
+
+static GstElementStateReturn
+gst_massink_change_state (GstElement *element)
+{
+  g_return_val_if_fail (GST_IS_MASSINK (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_MASSINK_OPEN))
+      //gst_massink_close_audio (GST_MASSINK (element));
+    /* otherwise (READY or higher) we need to open the fd */
+  } else {
+    if (!GST_FLAG_IS_SET (element, GST_MASSINK_OPEN)) {
+      if (!gst_massink_open_audio (GST_MASSINK (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;
+}
+