*/
schanid_t
glk_schannel_create(glui32 rock)
+{
+ return glk_schannel_create_ext(rock, 0x10000);
+}
+
+/**
+ * glk_schannel_create_ext:
+ * @rock: The rock value to give the new sound channel.
+ * @volume: Integer representing the volume; 0x10000 is 100%.
+ *
+ * [DRAFT SPEC]
+ *
+ * The glk_schannel_create_ext() call lets you create a channel with the volume
+ * already set at a given level.
+ *
+ * Returns: A new sound channel, or %NULL.
+ */
+schanid_t
+glk_schannel_create_ext(glui32 rock, glui32 volume)
{
#ifdef GSTREAMER_SOUND
ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
goto fail;
}
+ /* Set the initial volume */
+ glk_schannel_set_volume(s, volume);
+
/* Put the elements in the pipeline and link as many together as we can
without knowing the type of the audio stream */
gst_bin_add_many(GST_BIN(s->pipeline), s->source, s->typefind, s->convert, s->filter, s->sink, NULL);
g_object_set(chan->source, "stream", stream, NULL);
g_object_unref(stream); /* Now owned by GStreamer element */
- if(!gst_element_set_state(chan->pipeline, GST_STATE_PLAYING)) {
- WARNING_S(_("Could not set GstElement state to"), "PLAYING");
+ /* Play the sound; unless the channel is paused, then pause it instead */
+ if(!gst_element_set_state(chan->pipeline, chan->paused? GST_STATE_PAUSED : GST_STATE_PLAYING)) {
+ WARNING_S(_("Could not set GstElement state to"), chan->paused? "PAUSED" : "PLAYING");
return 0;
}
return 1;
#endif
}
+/**
+ * glk_schannel_play_multi:
+ * @chanarray:
+ * @chancount:
+ * @sndarray:
+ * @soundcount:
+ * @notify:
+ *
+ * [DRAFT SPEC]
+ *
+ * This works the same as glk_schannel_play_ext(), except that you can specify
+ * more than one sound. The channel references and sound resource numbers are
+ * given as two arrays, which must be the same length. The @notify argument
+ * applies to all the sounds; the repeats value for all the sounds is 1.
+ *
+ * All the sounds will begin at exactly the same time.
+ *
+ * This returns the number of sounds that began playing correctly. (This will be
+ * a number from 0 to @soundcount.)
+ *
+ * <note><para>
+ * Note that you have to supply @chancount and @soundcount as separate
+ * arguments, even though they are required to be the same. This is an awkward
+ * consequence of the way array arguments are dispatched in Glulx.
+ * </para></note>
+ *
+ * Returns: The number of sounds that started playing correctly.
+ */
+glui32
+glk_schannel_play_multi(schanid_t *chanarray, glui32 chancount, glui32 *sndarray, glui32 soundcount, glui32 notify)
+{
+ g_return_val_if_fail(chancount == soundcount, 0);
+ g_return_val_if_fail(chanarray == NULL && chancount != 0, 0);
+ g_return_val_if_fail(sndarray == NULL && soundcount != 0, 0);
+
+ int count;
+ for(count = 0; count < chancount; count++)
+ VALID_SCHANNEL(chanarray[count], return 0);
+
+ g_warning("Not implemented");
+ return 0;
+}
+
/**
* glk_schannel_stop:
* @chan: Channel to silence.
#endif
}
+/**
+ * glk_schannel_pause:
+ * @chan: Channel to pause.
+ *
+ * [DRAFT SPEC]
+ *
+ * Pause any sound playing in the channel. This does not generate any
+ * notification events. If the channel is already paused, this does nothing.
+ *
+ * New sounds started in a paused channel are paused immediately.
+ *
+ * A volume change in progress is <emphasis>not</emphasis> paused, and may
+ * proceed to completion, generating a notification if appropriate.
+ */
+void
+glk_schannel_pause(schanid_t chan)
+{
+ VALID_SCHANNEL(chan, return);
+
+ if(chan->paused)
+ return; /* Silently do nothing */
+
+ /* Mark the channel as paused even if there is no sound playing yet */
+ chan->paused = TRUE;
+
+ GstState state;
+ if(gst_element_get_state(chan->pipeline, &state, NULL, GST_CLOCK_TIME_NONE) != GST_STATE_CHANGE_SUCCESS) {
+ WARNING(_("Could not get GstElement state"));
+ return;
+ }
+ if(state != GST_STATE_PLAYING)
+ return; /* Silently do nothing if no sound is playing */
+
+ if(!gst_element_set_state(chan->pipeline, GST_STATE_PAUSED)) {
+ WARNING_S(_("Could not set GstElement state to"), "PAUSED");
+ return;
+ }
+}
+
+/**
+ * glk_schannel_unpause:
+ * @chan: Channel to unpause.
+ *
+ * [DRAFT SPEC]
+ *
+ * Unpause the channel. Any paused sounds begin playing where they left off. If
+ * the channel is not already paused, this does nothing.
+ */
+void
+glk_schannel_unpause(schanid_t chan)
+{
+ VALID_SCHANNEL(chan, return);
+
+ if(!chan->paused)
+ return; /* Silently do nothing */
+
+ /* Mark the channel as not paused in any case */
+ chan->paused = FALSE;
+
+ GstState state;
+ if(gst_element_get_state(chan->pipeline, &state, NULL, GST_CLOCK_TIME_NONE) != GST_STATE_CHANGE_SUCCESS) {
+ WARNING(_("Could not get GstElement state"));
+ return;
+ }
+ if(state != GST_STATE_PAUSED)
+ return; /* Silently do nothing */
+
+ if(!gst_element_set_state(chan->pipeline, GST_STATE_PLAYING)) {
+ WARNING_S(_("Could not set GstElement state to"), "PLAYING");
+ return;
+ }
+}
+
/**
* glk_schannel_set_volume:
* @chan: Channel to set the volume of.
*/
void
glk_schannel_set_volume(schanid_t chan, glui32 vol)
+{
+ glk_schannel_set_volume_ext(chan, vol, 0, 0);
+}
+
+/**
+ * glk_schannel_set_volume_ext:
+ * @chan: Channel to set the volume of.
+ * @vol: Integer representing the volume; 0x10000 is 100%.
+ * @duration: Length of volume change in milliseconds, or 0 for immediate.
+ * @notify: If nonzero, requests a notification when the volume change finishes.
+ *
+ * [DRAFT SPEC]
+ *
+ * Sets the volume in the channel, from 0 (silence) to 0x10000 (full volume).
+ * Again, you can overdrive the volume by setting a value greater than 0x10000,
+ * but this is not recommended.
+ *
+ * If the @duration is zero, the change is immediate. Otherwise, the change
+ * begins immediately, and occurs smoothly over the next @duration milliseconds.
+ *
+ * The @notify value should be nonzero in order to request a volume notification
+ * event. If you do this, when the volume change is completed, you will get an
+ * event with type #evtype_VolumeNotify. The window will be %NULL, @val1 will be
+ * zero, and @val2 will be the nonzero value you passed as @notify.
+ *
+ * The glk_schannel_set_volume() does not include @duration and @notify values.
+ * Both are assumed to be zero: immediate change, no notification.
+ *
+ * You can call these functions between sounds, or while a sound is playing.
+ * However, a zero-duration change while a sound is playing may produce
+ * unpleasant clicks.
+ *
+ * At most one volume change can be occurring on a sound channel at any time. If
+ * you call one of these functions while a previous volume change is in
+ * progress, the previous change is interrupted. The beginning point of the new
+ * volume change should be wherever the previous volume change was interrupted
+ * (rather than the previous change's beginning or ending point).
+ *
+ * Not all libraries support these functions. You should test the appropriate
+ * gestalt selectors before you rely on them; see "Testing for Sound
+ * Capabilities".
+ */
+void
+glk_schannel_set_volume_ext(schanid_t chan, glui32 vol, glui32 duration, glui32 notify)
{
VALID_SCHANNEL(chan, return);
+ /* Silently ignore out-of-range volume values */
+
#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
+
+ /* Not implemented */
}
/**
projects / projects / chimara / chimara.git / blobdiff