UltraGrid
UltraGrid Low-Latency High-Resolution Transmission System
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audio_buffer.h
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1
5/*
6 * Copyright (c) 2016 CESNET z.s.p.o.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, is permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * 3. Neither the name of CESNET nor the names of its contributors may be
21 * used to endorse or promote products derived from this software without
22 * specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
26 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
27 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
28 * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
29 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
34 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
35 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#ifndef AUDIO_BUFFER_H_
39#define AUDIO_BUFFER_H_
40
41#ifdef __cplusplus
42extern "C" {
43#endif
44
45struct audio_buffer;
47
48struct audio_buffer *audio_buffer_init(int sample_rate, int bps, int ch_count, int suggested_latency_ms);
49void audio_buffer_destroy(struct audio_buffer *buf);
50int audio_buffer_read(struct audio_buffer *buf, char *out, int max_len);
51void audio_buffer_write(struct audio_buffer *buf, const char *in, int len);
52
53// used also for ring buffer;
55 void (*destroy)(void *buf);
56 int (*read)(void *buf, char *out, int max_len);
57 void (*write)(void *buf, const char *in, int len);
58};
59
61
62#ifdef __cplusplus
63}
64#endif
65
66#endif /* AUDIO_BUFFER_H_ */
67
int int int sample_rate
int void size_t * len
struct audio_buffer_api audio_buffer_fns
void audio_buffer_destroy(struct audio_buffer *buf)
struct audio_buffer * audio_buffer_init(int sample_rate, int bps, int ch_count, int suggested_latency_ms)
int audio_buffer_read(struct audio_buffer *buf, char *out, int max_len)
void audio_buffer_write(struct audio_buffer *buf, const char *in, int len)
int(* read)(void *buf, char *out, int max_len)
void(* write)(void *buf, const char *in, int len)
void(* destroy)(void *buf)
int suggested_latency_ms