| 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 | /** @addtogroup libdrv
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| 29 | * @addtogroup usb
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | * @brief Audio PCM buffer interface.
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| 34 | */
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| 35 |
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| 36 | #ifndef LIBDRV_AUDIO_PCM_IFACE_H_
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| 37 | #define LIBDRV_AUDIO_PCM_IFACE_H_
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| 38 |
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| 39 | #include <async.h>
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| 40 | #include <bool.h>
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| 41 | #include <loc.h>
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| 42 | #include <pcm/sample_format.h>
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| 43 |
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| 44 | #include "ddf/driver.h"
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| 45 |
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| 46 | typedef enum {
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| 47 | AUDIO_CAP_CAPTURE,
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| 48 | AUDIO_CAP_PLAYBACK,
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| 49 | AUDIO_CAP_MAX_BUFFER,
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| 50 | AUDIO_CAP_BUFFER_POS,
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| 51 | AUDIO_CAP_INTERRUPT,
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| 52 | AUDIO_CAP_INTERRUPT_MIN_FRAMES,
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| 53 | AUDIO_CAP_INTERRUPT_MAX_FRAMES,
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| 54 | } audio_cap_t;
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| 55 |
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| 56 | typedef enum {
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| 57 | PCM_EVENT_PLAYBACK_STARTED = IPC_FIRST_USER_METHOD,
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| 58 | PCM_EVENT_CAPTURE_STARTED,
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| 59 | PCM_EVENT_FRAMES_PLAYED,
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| 60 | PCM_EVENT_FRAMES_CAPTURED,
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| 61 | PCM_EVENT_PLAYBACK_TERMINATED,
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| 62 | PCM_EVENT_CAPTURE_TERMINATED
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| 63 | } pcm_event_t;
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| 64 |
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| 65 | typedef async_sess_t audio_pcm_sess_t;
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| 66 |
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| 67 | audio_pcm_sess_t *audio_pcm_open(const char *);
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| 68 | audio_pcm_sess_t *audio_pcm_open_service(service_id_t service);
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| 69 | void audio_pcm_close(audio_pcm_sess_t *);
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| 70 |
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| 71 | int audio_pcm_get_info_str(audio_pcm_sess_t *, const char **);
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| 72 | int audio_pcm_test_format(audio_pcm_sess_t *, unsigned *, unsigned *,
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| 73 | pcm_sample_format_t *);
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| 74 | int audio_pcm_query_cap(audio_pcm_sess_t *, audio_cap_t, unsigned *);
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| 75 | int audio_pcm_register_event_callback(audio_pcm_sess_t *,
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| 76 | async_client_conn_t, void *);
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| 77 | int audio_pcm_unregister_event_callback(audio_pcm_sess_t *);
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| 78 |
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| 79 | int audio_pcm_get_buffer(audio_pcm_sess_t *, void **, size_t *);
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| 80 | int audio_pcm_get_buffer_pos(audio_pcm_sess_t *, size_t *);
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| 81 | int audio_pcm_release_buffer(audio_pcm_sess_t *);
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| 82 |
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| 83 | int audio_pcm_start_playback(audio_pcm_sess_t *, unsigned,
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| 84 | unsigned, unsigned, pcm_sample_format_t);
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| 85 | int audio_pcm_stop_playback(audio_pcm_sess_t *);
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| 86 |
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| 87 | int audio_pcm_start_capture(audio_pcm_sess_t *, unsigned,
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| 88 | unsigned, unsigned, pcm_sample_format_t);
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| 89 | int audio_pcm_stop_capture(audio_pcm_sess_t *);
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| 90 |
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| 91 | /** Audio pcm communication interface. */
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| 92 | typedef struct {
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| 93 | int (*get_info_str)(ddf_fun_t *, const char **);
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| 94 | int (*test_format)(ddf_fun_t *, unsigned *, unsigned *,
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| 95 | pcm_sample_format_t *);
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| 96 | unsigned (*query_cap)(ddf_fun_t *, audio_cap_t);
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| 97 | int (*get_buffer_pos)(ddf_fun_t *, size_t *);
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| 98 | int (*get_buffer)(ddf_fun_t *, void **, size_t *);
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| 99 | int (*release_buffer)(ddf_fun_t *);
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| 100 | int (*set_event_session)(ddf_fun_t *, async_sess_t *);
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| 101 | async_sess_t * (*get_event_session)(ddf_fun_t *);
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| 102 | int (*start_playback)(ddf_fun_t *, unsigned,
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| 103 | unsigned, unsigned, pcm_sample_format_t);
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| 104 | int (*stop_playback)(ddf_fun_t *);
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| 105 | int (*start_capture)(ddf_fun_t *, unsigned,
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| 106 | unsigned, unsigned, pcm_sample_format_t);
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| 107 | int (*stop_capture)(ddf_fun_t *);
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| 108 | } audio_pcm_iface_t;
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| 109 |
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| 110 | #endif
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| 111 | /**
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| 112 | * @}
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| 113 | */
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