| 1 | /*
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| 2 | * Copyright (c) 2012 Jan Vesely
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup audio
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| 30 | * @brief HelenOS sound server
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| 31 | * @{
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| 32 | */
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| 33 | /** @file
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| 34 | */
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| 35 |
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| 36 | #ifndef AUDIO_SOURCE_H_
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| 37 | #define AUDIO_SOURCE_H_
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| 38 |
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| 39 | #include <adt/list.h>
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| 40 | #include <bool.h>
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| 41 | #include <pcm_sample_format.h>
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| 42 |
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| 43 |
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| 44 | #include "audio_format.h"
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| 45 |
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| 46 | struct audio_sink;
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| 47 | typedef struct audio_source audio_source_t;
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| 48 |
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| 49 | struct audio_source {
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| 50 | link_t link;
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| 51 | const char *name;
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| 52 | audio_format_t format;
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| 53 | void *private_data;
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| 54 | int (*connection_change)(audio_source_t *source);
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| 55 | int (*update_available_data)(audio_source_t *source, size_t size);
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| 56 | struct audio_sink *connected_sink;
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| 57 | struct {
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| 58 | void *base;
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| 59 | size_t size;
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| 60 | } available_data;
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| 61 | };
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| 62 |
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| 63 | static inline audio_source_t * audio_source_list_instance(link_t *l)
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| 64 | {
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| 65 | return list_get_instance(l, audio_source_t, link);
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| 66 | }
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| 67 |
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| 68 | int audio_source_init(audio_source_t *source, const char *name, void *data,
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| 69 | int (*connection_change)(audio_source_t *),
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| 70 | int (*update_available_data)(audio_source_t *, size_t),
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| 71 | const audio_format_t *f);
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| 72 | void audio_source_fini(audio_source_t *source);
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| 73 | int audio_source_connected(audio_source_t *source, struct audio_sink *sink);
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| 74 | int audio_source_add_self(audio_source_t *source, void *buffer, size_t size,
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| 75 | const audio_format_t *f);
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| 76 | static inline const audio_format_t *audio_source_format(const audio_source_t *s)
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| 77 | {
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| 78 | assert(s);
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| 79 | return &s->format;
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| 80 | }
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| 81 | #endif
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| 82 |
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| 83 | /**
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| 84 | * @}
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| 85 | */
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