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118 lines
5.4 KiB
118 lines
5.4 KiB
/*************************************************************************/ |
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/* */ |
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/* Language Technologies Institute */ |
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/* Carnegie Mellon University */ |
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/* Copyright (c) 2000 */ |
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/* All Rights Reserved. */ |
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/* */ |
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/* Permission is hereby granted, free of charge, to use and distribute */ |
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/* this software and its documentation without restriction, including */ |
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/* without limitation the rights to use, copy, modify, merge, publish, */ |
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/* distribute, sublicense, and/or sell copies of this work, and to */ |
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/* permit persons to whom this work is furnished to do so, subject to */ |
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/* the following conditions: */ |
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/* 1. The code must retain the above copyright notice, this list of */ |
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/* conditions and the following disclaimer. */ |
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/* 2. Any modifications must be clearly marked as such. */ |
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/* 3. Original authors' names are not deleted. */ |
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/* 4. The authors' names are not used to endorse or promote products */ |
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/* derived from this software without specific prior written */ |
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/* permission. */ |
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/* */ |
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/* CARNEGIE MELLON UNIVERSITY AND THE CONTRIBUTORS TO THIS WORK */ |
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/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */ |
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/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */ |
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/* SHALL CARNEGIE MELLON UNIVERSITY NOR THE CONTRIBUTORS BE LIABLE */ |
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/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */ |
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/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */ |
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/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */ |
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/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */ |
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/* THIS SOFTWARE. */ |
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/* */ |
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/*************************************************************************/ |
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/* Author: Alan W Black (awb@cs.cmu.edu) */ |
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/* Date: August 2000 */ |
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/*************************************************************************/ |
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/* */ |
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/* Audio */ |
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/* */ |
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/*************************************************************************/ |
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#ifndef _CST_AUDIO_H__ |
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#define _CST_AUDIO_H__ |
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#include "cst_wave.h" |
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#include "cst_hrg.h" |
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#ifdef CST_AUDIO_WIN32 |
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#define CST_AUDIOBUFFSIZE 8092 |
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#else |
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#define CST_AUDIOBUFFSIZE 128 |
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#endif |
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#define CST_AUDIO_DEFAULT_PORT 1746 |
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#define CST_AUDIO_DEFAULT_SERVER "localhost" |
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#define CST_AUDIO_DEFAULT_ENCODING "short" |
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typedef enum { |
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CST_AUDIO_LINEAR16 = 0, |
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CST_AUDIO_LINEAR8, |
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CST_AUDIO_MULAW |
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} cst_audiofmt; |
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/* Returns the number of bytes per sample for a given audio format */ |
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int audio_bps(cst_audiofmt fmt); |
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typedef struct cst_audiodev_struct { |
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int sps, real_sps; |
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int channels, real_channels; |
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cst_audiofmt fmt, real_fmt; |
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int byteswap; |
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cst_rateconv *rateconv; |
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void *platform_data; |
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} cst_audiodev; |
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/* Generic audio functions */ |
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cst_audiodev *audio_open(int sps, int channels, cst_audiofmt fmt); |
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int audio_close(cst_audiodev *ad); |
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int audio_write(cst_audiodev *ad, void *buff, int num_bytes); |
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int audio_flush(cst_audiodev *ad); /* wait for buffers to empty */ |
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int audio_drain(cst_audiodev *ad); /* empty buffers now */ |
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/* Generic high level audio functions */ |
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int play_wave(cst_wave *w); |
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int play_wave_sync(cst_wave *w, cst_relation *rel, |
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int (*call_back)(cst_item *)); |
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int play_wave_client(cst_wave *w, const char *servername, int port, |
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const char *encoding); |
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int auserver(int port); |
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/* Play wave to specified device */ |
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int play_wave_device(cst_wave *w, cst_audiodev *ad); |
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/* Output to a file as if its an audio device */ |
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cst_audiodev *audio_open_file(int sps, int channels, cst_audiofmt fmt, |
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const char *filename); |
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int audio_close_file(cst_audiodev *ad); |
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int audio_write_file(cst_audiodev *ad, void *buff, int num_bytes); |
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int audio_drain_file(cst_audiodev *ad); |
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int audio_flush_file(cst_audiodev *ad); |
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/* For audio streaming */ |
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#define CST_AUDIO_STREAM_STOP -1 |
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#define CST_AUDIO_STREAM_CONT 0 |
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typedef int (*cst_audio_stream_callback)(const cst_wave *w,int start,int size, |
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int last, void *user); |
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typedef struct cst_audio_streaming_info_struct |
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{ |
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int min_buffsize; |
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cst_audio_stream_callback asc; |
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void *userdata; |
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} cst_audio_streaming_info; |
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cst_audio_streaming_info *new_audio_streaming_info(); |
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void delete_audio_streaming_info(cst_audio_streaming_info *asi); |
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CST_VAL_USER_TYPE_DCLS(audio_streaming_info,cst_audio_streaming_info) |
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/* An example audio streaming callback function src/audio/au_streaming.c */ |
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int audio_stream_chunk(const cst_wave *w, int start, int size, |
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int last, void *user); |
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#endif
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