/*************************************************************************//*                                                                       *//*                  Language Technologies Institute                      *//*                     Carnegie Mellon University                        *//*                        Copyright (c) 2008                             *//*                        All Rights Reserved.                           *//*                                                                       *//*  Permission is hereby granted, free of charge, to use and distribute  *//*  this software and its documentation without restriction, including   *//*  without limitation the rights to use, copy, modify, merge, publish,  *//*  distribute, sublicense, and/or sell copies of this work, and to      *//*  permit persons to whom this work is furnished to do so, subject to   *//*  the following conditions:                                            *//*   1. The code must retain the above copyright notice, this list of    *//*      conditions and the following disclaimer.                         *//*   2. Any modifications must be clearly marked as such.                *//*   3. Original authors' names are not deleted.                         *//*   4. The authors' names are not used to endorse or promote products   *//*      derived from this software without specific prior written        *//*      permission.                                                      *//*                                                                       *//*  CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK         *//*  DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING      *//*  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT   *//*  SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE      *//*  FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES    *//*  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN   *//*  AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,          *//*  ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF       *//*  THIS SOFTWARE.                                                       *//*                                                                       *//*************************************************************************//*             Author:  Alan W Black (awb@cs.cmu.edu)                    *//*               Date:  November 2008                                    *//*************************************************************************//*                                                                       *//*  Support for audio streaming.                                         *//*                                                                       *//*  When switched on you get called with cst_wave with a start and size  *//*  at least as big as the requested buffer size (except for last chunk  *//*                                                                       *//*************************************************************************/ #include "cst_string.h"#include "cst_wave.h"#include "cst_audio.h" CST_VAL_REGISTER_TYPE(audio_streaming_info,cst_audio_streaming_info) cst_audio_streaming_info *new_audio_streaming_info(void){    cst_audio_streaming_info *asi =         cst_alloc(struct cst_audio_streaming_info_struct,1);     asi->min_buffsize = 256;    asi->asc = NULL;    asi->userdata = NULL;     return asi;} void delete_audio_streaming_info(cst_audio_streaming_info *asi){    if (asi)        cst_free(asi);    return;} int audio_stream_chunk(const cst_wave *w, int start, int size,                        int last, cst_audio_streaming_info *asi){    /* Called with new samples from start for size samples */    /* last is true if this is the last segment. */    /* This is really just and example that you can copy for you streaming */    /* function */    /* This particular example is *not* thread safe */     static cst_audiodev *ad = 0;     if (start == 0)        ad = audio_open(w->sample_rate,w->num_channels,CST_AUDIO_LINEAR16);     audio_write(ad,&w->samples[start],size*sizeof(short));     if (last == 1)    {        audio_close(ad);        ad = NULL;    }     /* if you want to stop return CST_AUDIO_STREAM_STOP */    return CST_AUDIO_STREAM_CONT;}