mirror of
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117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
/**
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* @file audio/codec.h
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* @author Martin Pulec <pulec@cesnet.cz>
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*/
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/*
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* Copyright (c) 2013-2023 CESNET, z. s. p. o.
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* All rights reserved.
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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. Neither the name of CESNET nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific 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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#ifndef AUDIO_CODEC_H_
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#define AUDIO_CODEC_H_
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#include "audio/types.h"
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#define AUDIO_COMPRESS_ABI_VERSION 4
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#ifdef __cplusplus
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#include <cstddef> // for size_t
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#include <cstdint> // for uint32_t
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#else
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#include <stddef.h> // for size_t
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#include <stdint.h> // for uint32_t
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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_compress_info {
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const audio_codec_t *supported_codecs;
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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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const int *(*get_samplerates)(void *);
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/// returns additional text data to be printed in help
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const char *(*get_codec_info)(void *, size_t buflen, char *buffer);
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void (*done)(void *);
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};
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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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#ifdef __cplusplus
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#include <string>
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#include <tuple>
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#include <vector> // for vector
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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 *, const 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_samplerates(struct audio_codec_state *);
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void audio_codec_done(struct audio_codec_state *);
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std::vector<std::tuple<audio_codec_info_t, bool, std::string>>
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get_audio_codec_list();
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif // defined __cplusplus
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void list_audio_codecs(void);
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struct audio_codec_params {
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audio_codec_t codec;
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int sample_rate;
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int bitrate;
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};
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struct audio_codec_params parse_audio_codec_params(const char *ccfg);
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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 // defined __cplusplus
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#endif /* AUDIO_CODEC_H */
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