www.pudn.com > sources_4610.rar > Artword_Speaker_Sound.c

/* Artword_Speaker_Sound.c
 *
 * Copyright (C) 1992-2006 Paul Boersma
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * pb 2001/08/02 last change
 * pb 2002/07/16 GPL
 * pb 2006/12/20 new Sound_play API
 * pb 2006/12/30 new Sound_create API
 */

#include "Artword_Speaker_Sound.h"
#include "Artword_Speaker.h"
#include "Art_Speaker.h"

struct playInfo {
	Artword artword;
	Speaker speaker;
	Graphics graphics;
};

static int playCallback (void *playClosure, int phase, double tmin, double tmax, double t) {
	struct playInfo *me = (struct playInfo *) playClosure;
	static Art art;
	(void) phase;
	(void) tmin;
	(void) tmax;
	if (! art) art = Art_create ();
	Artword_intoArt (my artword, art, t);
	Graphics_clearWs (my graphics);
	Art_Speaker_draw (art, my speaker, my graphics);
	return 1;
}

void Artword_Speaker_Sound_movie (Artword artword, Speaker speaker, Sound sound, Graphics graphics) {
	int own = FALSE;
	static struct playInfo info;   /* Must be static!!! */
	info. artword = artword;
	info. speaker = speaker;
	info. graphics = graphics;
	if (sound == NULL) {
		sound = Sound_createSimple (1, artword -> totalTime, 22050);
		if (! sound) {
			Melder_flushError (NULL);
			return;
		}
		own = TRUE;
	}
	Sound_play (sound, playCallback, & info);
	iferror Melder_clearError ();
	if (own) {
		forget (sound);
	}
}

/* End of file Artword_Speaker_Sound.c */