From: P. F. Chimento Date: Mon, 4 Jul 2011 21:24:11 +0000 (+0200) Subject: Add stubs for new 0.7.3 draft API functions X-Git-Tag: v0.9~47^2~14 X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=cdd8964f54a340e947b8a992ce7a6bc6cb192de6;p=projects%2Fchimara%2Fchimara.git Add stubs for new 0.7.3 draft API functions --- diff --git a/libchimara/schannel.c b/libchimara/schannel.c index 8cd7b52..5432436 100644 --- a/libchimara/schannel.c +++ b/libchimara/schannel.c @@ -452,6 +452,49 @@ glk_schannel_play_ext(schanid_t chan, glui32 snd, glui32 repeats, glui32 notify) #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 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. + * + * + * 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. @@ -468,6 +511,45 @@ glk_schannel_stop(schanid_t chan) #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 not paused, and may + * proceed to completion, generating a notification if appropriate. + */ +void +glk_schannel_pause(schanid_t chan) +{ + VALID_SCHANNEL(chan, return); + + /* Not implemented */ +} + +/** + * 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); + + /* Not implemented */ +} + /** * glk_schannel_set_volume: * @chan: Channel to set the volume of. @@ -499,13 +581,61 @@ glk_schannel_stop(schanid_t chan) */ 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 thse 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 */ } /**