Work on sound support
[projects/chimara/chimara.git] / libchimara / schannel.c
index 004efefd87288841194b894958dd0f099ff777b5..e0695b82390db831f33d3915ef3205df5bb48ca5 100644 (file)
@@ -1,5 +1,6 @@
 #include <config.h>
 #include <glib.h>
+#include <glib/gi18n.h>
 #include <libchimara/glk.h>
 #ifdef GSTREAMER_SOUND
 #include <gst/gst.h>
@@ -8,9 +9,97 @@
 #include "schannel.h"
 #include "chimara-glk-private.h"
 #include "gi_dispa.h"
+#include "gi_blorb.h"
+#include "resource.h"
 
 extern GPrivate *glk_data_key;
 
+#ifdef GSTREAMER_SOUND
+static void
+on_pipeline_message(GstBus *bus, GstMessage *message, schanid_t s)
+{
+       /* g_print("Got %s message\n", GST_MESSAGE_TYPE_NAME(message)); */
+
+       switch(GST_MESSAGE_TYPE(message)) {
+       case GST_MESSAGE_ERROR: {
+               GError *err;
+               gchar *debug;
+
+               gst_message_parse_error(message, &err, &debug);
+               g_print("Error: %s\n", err->message);
+               g_error_free(err);
+               g_free(debug);
+               break;
+       }
+       case GST_MESSAGE_EOS:
+               /* end-of-stream */
+               break;
+       default:
+               /* unhandled message */
+               break;
+       }
+}
+
+static void
+on_ogg_demuxer_pad_added(GstElement *demux, GstPad *pad, schanid_t s)
+{
+       GstPad *sinkpad;
+
+       /* We can now link this pad with the vorbis-decoder sink pad */
+       sinkpad = gst_element_get_static_pad(s->decode, "sink");
+       gst_pad_link(pad, sinkpad);
+       gst_object_unref(sinkpad);
+}
+
+static void
+on_type_found(GstElement *typefind, guint probability, GstCaps *caps, schanid_t s)
+{
+       gchar *type = gst_caps_to_string(caps);
+       if(strcmp(type, "application/ogg") == 0) 
+       {
+               s->demux = gst_element_factory_make("oggdemux", NULL);
+               s->decode = gst_element_factory_make("vorbisdec", NULL);
+               if(!s->demux || !s->decode)
+               {
+                       WARNING(_("Could not create one or more GStreamer elements"));
+                       goto finally;
+               }
+               gst_bin_add_many(GST_BIN(s->pipeline), s->demux, s->decode, NULL);
+               if(!gst_element_link(s->typefind, s->demux) || !gst_element_link(s->decode, s->convert))
+               {
+                       WARNING(_("Could not link GStreamer elements"));
+                       goto finally;
+               }
+               /* We link the demuxer and decoder together dynamically, since the
+                demuxer doesn't know what source pads it will have until it starts
+                demuxing the stream */
+               g_signal_connect(s->demux, "pad-added", G_CALLBACK(on_ogg_demuxer_pad_added), s);
+       }
+       else if(strcmp(type, "audio/x-aiff") == 0)
+       {
+               s->decode = gst_element_factory_make("aiffparse", NULL);
+               if(!s->decode)
+               {
+                       WARNING(_("Could not create 'aiffparse' GStreamer element"));
+                       goto finally;
+               }
+               gst_bin_add(GST_BIN(s->pipeline), s->decode);
+               if(!gst_element_link_many(s->typefind, s->decode, s->convert, NULL))
+               {
+                       WARNING(_("Could not link GStreamer elements"));
+                       goto finally;
+               }
+       }
+       else
+       {
+               WARNING("Can't play that type, you FOOL!");
+       }
+
+finally:
+       g_free(type);
+}
+#endif /* GSTREAMER_SOUND */
+
 /**
  * glk_schannel_create:
  * @rock: The rock value to give the new sound channel.
@@ -43,20 +132,30 @@ glk_schannel_create(glui32 rock)
        s->pipeline = gst_pipeline_new(pipeline_name);
        g_free(pipeline_name);
 
+       /* Watch for messages from the pipeline */
+       GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(s->pipeline));
+       gst_bus_add_signal_watch(bus);
+       g_signal_connect(bus, "message", G_CALLBACK(on_pipeline_message), s);
+       gst_object_unref(bus);
+
        /* Create GStreamer elements to put in the pipeline */
-       s->source = gst_element_factory_make("filesrc", NULL);
-       s->filter = gst_element_factory_make("identity", NULL);
+       s->source = gst_element_factory_make("giostreamsrc", NULL);
+       s->typefind = gst_element_factory_make("typefind", NULL);
+       s->convert = gst_element_factory_make("audioconvert", NULL);
+       s->filter = gst_element_factory_make("volume", NULL);
        s->sink = gst_element_factory_make("autoaudiosink", NULL);
-       if(!s->source || !s->filter || !s->sink) {
-               WARNING("Could not create one or more GStreamer elements");
+       if(!s->source || !s->typefind || !s->convert || !s->filter || !s->sink) {
+               WARNING(_("Could not create one or more GStreamer elements"));
                goto fail;
        }
                
-       gst_bin_add_many(GST_BIN(s->pipeline), s->source, s->filter, s->sink, NULL);
-       if(!gst_element_link_many(s->source, s->filter, s->sink, NULL)) {
-               WARNING("Could not link GStreamer elements");
+       gst_bin_add_many(GST_BIN(s->pipeline), s->source, s->typefind, s->convert, s->filter, s->sink, NULL);
+       /* Link elements: Source -> typefinder -> ??? -> Converter -> Volume filter -> Sink */
+       if(!gst_element_link(s->source, s->typefind) || !gst_element_link_many(s->convert, s->filter, s->sink, NULL)) {
+               WARNING(_("Could not link GStreamer elements"));
                goto fail;
        }
+       g_signal_connect(s->typefind, "have-type", G_CALLBACK(on_type_found), s);
        
        return s;
 
@@ -80,7 +179,11 @@ glk_schannel_destroy(schanid_t chan)
 {
        VALID_SCHANNEL(chan, return);
 
+#ifdef GSTREAMER_SOUND
        ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+       if(!gst_element_set_state(chan->pipeline, GST_STATE_NULL))
+               WARNING_S(_("Could not set GstElement state to"), "NULL");
        
        glk_data->schannel_list = g_list_delete_link(glk_data->schannel_list, chan->schannel_list);
 
@@ -91,10 +194,11 @@ glk_schannel_destroy(schanid_t chan)
        }
        
        if(chan->pipeline)
-               g_object_unref(chan->pipeline);
+               gst_object_unref(chan->pipeline);
        
        chan->magic = MAGIC_FREE;
        g_free(chan);
+#endif
 }
 
 /**
@@ -116,6 +220,7 @@ glk_schannel_iterate(schanid_t chan, glui32 *rockptr)
 {
        VALID_SCHANNEL_OR_NULL(chan, return NULL);
 
+#ifdef GSTREAMER_SOUND
        ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
        GList *retnode;
        
@@ -130,6 +235,9 @@ glk_schannel_iterate(schanid_t chan, glui32 *rockptr)
                *rockptr = glk_schannel_get_rock(retval);
                
        return retval;
+#else
+       return NULL;
+#endif /* GSTREAMER_SOUND */
 }
 
 /**
@@ -166,8 +274,6 @@ glk_schannel_get_rock(schanid_t chan)
  *   in which case playing a MOD resource would fail if one was already playing.
  * </para></note>
  *
- * <warning><para>This function is not implemented yet.</para></warning>
- *
  * Returns: 1 on success, 0 on failure.
  */
 glui32 
@@ -209,8 +315,6 @@ glk_schannel_play(schanid_t chan, glui32 snd)
  * %gestalt_SoundNotify selector before you rely on it; see <link
  * linkend="chimara-Testing-for-Sound-Capabilities">Testing for Sound 
  * Capabilities</link>.
- *
- * <warning><para>This function is not implemented yet.</para></warning>
  * 
  * Returns: 1 on success, 0 on failure.
  */
@@ -218,7 +322,36 @@ glui32
 glk_schannel_play_ext(schanid_t chan, glui32 snd, glui32 repeats, glui32 notify)
 {
        VALID_SCHANNEL(chan, return 0);
+#ifdef GSTREAMER_SOUND
+       ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+       
+       if(!glk_data->resource_map) {
+               if(!glk_data->resource_load_callback) {
+                       WARNING(_("No resource map has been loaded yet."));
+                       return 0;
+               }
+               WARNING(_("Loading sound resources from alternative location not yet supported."));
+               return 0;
+       }
+       
+       giblorb_result_t resource;
+       giblorb_err_t result = giblorb_load_resource(glk_data->resource_map, giblorb_method_Memory, &resource, giblorb_ID_Snd, snd);
+       if(result != giblorb_err_None) {
+               WARNING_S( _("Error loading resource"), giblorb_get_error_message(result) );
+               return 0;
+       }
+       g_printerr("playing sound resource %d on channel %p\n", snd, chan);
+       GInputStream *stream = g_memory_input_stream_new_from_data(resource.data.ptr, resource.length, NULL);
+       g_object_set(chan->source, "stream", stream, NULL);
+       
+       if(!gst_element_set_state(chan->pipeline, GST_STATE_PLAYING)) {
+               WARNING_S(_("Could not set GstElement state to"), "PLAYING");
+               return 0;
+       }
+       return 1;
+#else
        return 0;
+#endif
 }
 
 /**
@@ -227,13 +360,15 @@ glk_schannel_play_ext(schanid_t chan, glui32 snd, glui32 repeats, glui32 notify)
  *
  * Stops any sound playing in the channel. No notification event is generated,
  * even if you requested one. If no sound is playing, this has no effect.
- *
- * <warning><para>This function is not implemented yet.</para></warning>
  */
 void 
 glk_schannel_stop(schanid_t chan)
 {
        VALID_SCHANNEL(chan, return);
+#ifdef GSTREAMER_SOUND
+       if(!gst_element_set_state(chan->pipeline, GST_STATE_READY))
+               WARNING_S(_("Could not set GstElement state to"), "READY");
+#endif
 }
 
 /**
@@ -260,12 +395,20 @@ glk_schannel_stop(schanid_t chan)
  * linkend="chimara-Testing-for-Sound-Capabilities">Testing for Sound
  * Capabilities</link>.
  *
- * <warning><para>This function is not implemented yet.</para></warning>
+ * <note><title>Chimara</title>
+ *   <para>Chimara supports volumes from 0 to 1000&percnt;, that is, values of
+ *   @vol up to 0xA0000.</para>
+ * </note>
  */
 void 
 glk_schannel_set_volume(schanid_t chan, glui32 vol)
 {
        VALID_SCHANNEL(chan, return);
+#ifdef GSTREAMER_SOUND
+       gdouble volume_gst = (gdouble)vol / 0x10000;
+       g_printerr("Volume set to: %f\n", volume_gst);
+       g_object_set(chan->filter, "volume", CLAMP(volume_gst, 0.0, 10.0), NULL);
+#endif
 }
 
 /**