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110 lines
4.0 KiB
C
110 lines
4.0 KiB
C
/*
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* FILE: audio/echo.h
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* AUTHORS: Martin Benes <martinbenesh@gmail.com>
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* Lukas Hejtmanek <xhejtman@ics.muni.cz>
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* Petr Holub <hopet@ics.muni.cz>
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* Milos Liska <xliska@fi.muni.cz>
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* Jiri Matela <matela@ics.muni.cz>
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* Dalibor Matura <255899@mail.muni.cz>
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* Ian Wesley-Smith <iwsmith@cct.lsu.edu>
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*
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* Copyright (c) 2005-2010 CESNET z.s.p.o.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, is permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by CESNET z.s.p.o.
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*
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* 4. Neither the name of CESNET nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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*/
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#ifndef AUDIO_CODEC_H_
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#define AUDIO_CODEC_H_
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#include "audio/audio.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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AUDIO_CODER,
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AUDIO_DECODER
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} audio_codec_direction_t;
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struct audio_codec {
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const audio_codec_t *supported_codecs;
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const int *supported_bytes_per_second;
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void *(*init)(audio_codec_t, audio_codec_direction_t, bool, int bitrate);
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audio_channel *(*compress)(void *, audio_channel *);
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audio_channel *(*decompress)(void *, audio_channel *);
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void (*done)(void *);
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};
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extern void (*register_audio_codec)(struct audio_codec *);
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typedef struct {
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const char *name;
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/** @var tag
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* @brief TwoCC if defined, otherwise we define our tag
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*/
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uint32_t tag;
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} audio_codec_info_t;
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extern audio_codec_info_t audio_codec_info[];
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extern int audio_codec_info_len;
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struct audio_codec_state;
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struct audio_codec_state *audio_codec_init(audio_codec_t audio_codec, audio_codec_direction_t);
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struct audio_codec_state *audio_codec_init_cfg(const char *audio_codec_cfg, audio_codec_direction_t);
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struct audio_codec_state *audio_codec_reconfigure(struct audio_codec_state *old,
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audio_codec_t audio_codec, audio_codec_direction_t);
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audio_frame2 *audio_codec_compress(struct audio_codec_state *, audio_frame2 *);
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audio_frame2 *audio_codec_decompress(struct audio_codec_state *, audio_frame2 *);
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const int *audio_codec_get_supported_bps(struct audio_codec_state *);
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void audio_codec_done(struct audio_codec_state *);
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void list_audio_codecs(void);
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audio_codec_t get_audio_codec(const char *audio_codec_cfg);
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int get_audio_codec_sample_rate(const char *audio_codec_cfg);
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int get_audio_codec_bitrate(const char *audio_codec_cfg);
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const char *get_name_to_audio_codec(audio_codec_t codec);
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uint32_t get_audio_tag(audio_codec_t codec);
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audio_codec_t get_audio_codec_to_tag(uint32_t audio_tag);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AUDIO_CODEC_H */
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