+#include <config.h>
#include <glib.h>
#include <libchimara/glk.h>
+#ifdef GSTREAMER_SOUND
+#include <gst/gst.h>
+#endif
+#include "magic.h"
+#include "schannel.h"
+#include "chimara-glk-private.h"
+#include "gi_dispa.h"
+extern GPrivate *glk_data_key;
+
+/**
+ * glk_schannel_create:
+ * @rock: The rock value to give the new sound channel.
+ *
+ * This creates a sound channel, about as you'd expect.
+ *
+ * Remember that it is possible that the library will be unable to create a new
+ * channel, in which case glk_schannel_create() will return %NULL.
+ *
+ * Returns: A new sound channel, or %NULL.
+ */
schanid_t
glk_schannel_create(glui32 rock)
{
+#ifdef GSTREAMER_SOUND
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ schanid_t s = g_new0(struct glk_schannel_struct, 1);
+ s->magic = MAGIC_SCHANNEL;
+ s->rock = rock;
+ if(glk_data->register_obj)
+ s->disprock = (*glk_data->register_obj)(s, gidisp_Class_Schannel);
+
+ /* Add it to the global sound channel list */
+ glk_data->schannel_list = g_list_prepend(glk_data->schannel_list, s);
+ s->schannel_list = glk_data->schannel_list;
+
+ /* Create a GStreamer pipeline for the sound channel */
+ gchar *pipeline_name = g_strdup_printf("pipeline-%p", s);
+ s->pipeline = gst_pipeline_new(pipeline_name);
+ g_free(pipeline_name);
+
+ /* Create GStreamer elements to put in the pipeline */
+ s->source = gst_element_factory_make("fakesrc", NULL);
+ s->filter = gst_element_factory_make("identity", NULL);
+ s->sink = gst_element_factory_make("fakesink", NULL);
+ 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))
+ goto fail;
+
+ return s;
+
+fail:
+ glk_schannel_destroy(s);
+ return NULL;
+#else
return NULL;
+#endif /* GSTREAMER_SOUND */
}
+/**
+ * glk_schannel_destroy:
+ * @chan: The sound channel to destroy.
+ *
+ * Destroys the channel. If the channel is playing a sound, the sound stops
+ * immediately (with no notification event).
+ */
void
glk_schannel_destroy(schanid_t chan)
{
+ VALID_SCHANNEL(chan, return);
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ glk_data->schannel_list = g_list_delete_link(glk_data->schannel_list, chan->schannel_list);
+
+ if(glk_data->unregister_obj)
+ {
+ (*glk_data->unregister_obj)(chan, gidisp_Class_Schannel, chan->disprock);
+ chan->disprock.ptr = NULL;
+ }
+
+ if(chan->pipeline)
+ g_object_unref(chan->pipeline);
+
+ chan->magic = MAGIC_FREE;
+ g_free(chan);
}
+/**
+ * glk_schannel_iterate:
+ * @chan: A sound channel, or %NULL.
+ * @rockptr: Return location for the next sound channel's rock, or %NULL.
+ *
+ * This function can be used to iterate through the list of all open channels.
+ * See <link linkend="chimara-Iterating-Through-Opaque-Objects">Iterating
+ * Through Opaque Objects</link>.
+ *
+ * As that section describes, the order in which channels are returned is
+ * arbitrary.
+ *
+ * Returns: the next sound channel, or %NULL if there are no more.
+ */
schanid_t
glk_schannel_iterate(schanid_t chan, glui32 *rockptr)
{
- return NULL;
+ VALID_SCHANNEL_OR_NULL(chan, return NULL);
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GList *retnode;
+
+ if(chan == NULL)
+ retnode = glk_data->schannel_list;
+ else
+ retnode = chan->schannel_list->next;
+ schanid_t retval = retnode? (schanid_t)retnode->data : NULL;
+
+ /* Store the sound channel's rock in rockptr */
+ if(retval && rockptr)
+ *rockptr = glk_schannel_get_rock(retval);
+
+ return retval;
}
+/**
+ * glk_schannel_get_rock:
+ * @chan: A sound channel.
+ *
+ * Retrieves the channel's rock value. See <link
+ * linkend="chimara-Rocks">Rocks</link>.
+ *
+ * Returns: A rock value.
+ */
glui32
glk_schannel_get_rock(schanid_t chan)
{
- return 0;
+ VALID_SCHANNEL(chan, return 0);
+ return chan->rock;
}
+/**
+ * glk_schannel_play:
+ * @chan: Channel to play the sound in.
+ * @snd: Resource number of the sound to play.
+ *
+ * Begins playing the given sound on the channel. If the channel was already
+ * playing a sound (even the same one), the old sound is stopped (with no
+ * notification event.
+ *
+ * This returns 1 if the sound actually started playing, and 0 if there was any
+ * problem.
+ * <note><para>
+ * The most obvious problem is if there is no sound resource with the given
+ * identifier. But other problems can occur. For example, the MOD-playing
+ * facility in a library might be unable to handle two MODs at the same time,
+ * 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
glk_schannel_play(schanid_t chan, glui32 snd)
{
+ VALID_SCHANNEL(chan, return 0);
return 0;
}
+/**
+ * glk_schannel_play_ext:
+ * @chan: Channel to play the sound in.
+ * @snd: Resource number of the sound to play.
+ * @repeats: Number of times to repeat the sound.
+ * @notify: If nonzero, requests a notification when the sound is finished.
+ *
+ * This works the same as glk_schannel_play(), but lets you specify additional
+ * options. <code>glk_schannel_play(chan, snd)</code> is exactly equivalent to
+ * <code>glk_schannel_play_ext(chan, snd, 1, 0)</code>.
+ *
+ * The @repeats value is the number of times the sound should be repeated. A
+ * repeat value of -1 (or rather 0xFFFFFFFF) means that the sound should repeat
+ * forever. A repeat value of 0 means that the sound will not be played at all;
+ * nothing happens. (Although a previous sound on the channel will be stopped,
+ * and the function will return 1.)
+ *
+ * The @notify value should be nonzero in order to request a sound notification
+ * event. If you do this, when the sound is completed, you will get an event
+ * with type %evtype_SoundNotify. The @window will be %NULL, @val1 will be the
+ * sound's resource id, and @val2 will be the nonzero value you passed as
+ * @notify.
+ *
+ * If you request sound notification, and the repeat value is greater than one,
+ * you will get the event only after the last repetition. If the repeat value is
+ * 0 or -1, you will never get a notification event at all. Similarly, if the
+ * sound is stopped or interrupted, or if the channel is destroyed while the
+ * sound is playing, there will be no notification event.
+ *
+ * Not all libraries support sound notification. You should test the
+ * %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.
+ */
glui32
glk_schannel_play_ext(schanid_t chan, glui32 snd, glui32 repeats, glui32 notify)
{
+ VALID_SCHANNEL(chan, return 0);
return 0;
}
+/**
+ * glk_schannel_stop:
+ * @chan: Channel to silence.
+ *
+ * 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);
}
+/**
+ * glk_schannel_set_volume:
+ * @chan: Channel to set the volume of.
+ * @vol: Integer representing the volume; 0x10000 is 100%.
+ *
+ * Sets the volume in the channel. When you create a channel, it has full
+ * volume, represented by the value 0x10000. Half volume would be 0x8000,
+ * three-quarters volume would be 0xC000, and so on. A volume of zero represents
+ * silence, although the sound is still considered to be playing.
+ *
+ * You can call this function between sounds, or while a sound is playing. The
+ * effect is immediate.
+ *
+ * You can overdrive the volume of a channel by setting a volume greater than
+ * 0x10000. However, this is not recommended; the library may be unable to
+ * increase the volume past full, or the sound may become distorted. You should
+ * always create sound resources with the maximum volume you will need, and then
+ * call glk_schannel_set_volume() to reduce the volume when appropriate.
+ *
+ * Not all libraries support this function. You should test the
+ * %gestalt_SoundVolume 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>
+ */
void
glk_schannel_set_volume(schanid_t chan, glui32 vol)
{
+ VALID_SCHANNEL(chan, return);
}
-void glk_sound_load_hint(glui32 snd, glui32 flag)
+/**
+ * glk_sound_load_hint:
+ * @snd: Resource number of a sound.
+ * @flag: Nonzero to tell the library to load the sound, zero to tell the
+ * library to unload it.
+ *
+ * This gives the library a hint about whether the given sound should be loaded
+ * or not. If the @flag is nonzero, the library may preload the sound or do
+ * other initialization, so that glk_schannel_play() will be faster. If the
+ * @flag is zero, the library may release memory or other resources associated
+ * with the sound. Calling this function is always optional, and it has no
+ * effect on what the library actually plays.
+ *
+ * <warning><para>This function is not implemented yet.</para></warning>
+ */
+void
+glk_sound_load_hint(glui32 snd, glui32 flag)
{
}
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