herrie: audio_output_null.c Source File

00001 /*
00002  * Copyright (c) 2006-2009 Ed Schouten <ed@80386.nl>
00003  * All rights reserved.
00004  * 
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 
00014  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
00015  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00016  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00017  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00018  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00019  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00020  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00021  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00022  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00023  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00024  * SUCH DAMAGE.
00025  */
00031 #include "stdinc.h"
00032 
00033 #include "audio_file.h"
00034 #include "audio_output.h"
00035 
00036 int
00037 audio_output_open(void)
00038 {
00039         return (0);
00040 }
00041 
00042 int
00043 audio_output_play(struct audio_file *fd)
00044 {
00045         int16_t buf[4096];
00046         size_t len;
00047         unsigned long delay;
00048 
00049         if ((len = audio_file_read(fd, buf, sizeof buf / sizeof(int16_t))) == 0)
00050                 return (-1);
00051         
00052         /* This should just fit - 2^12 * 10^6 < 2^32 */
00053         delay = (1000000 * len) / (fd->srate * fd->channels);
00054         g_usleep(delay);
00055 
00056         return (0);
00057 }
00058 
00059 void
00060 audio_output_close(void)
00061 {
00062 }