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7e04f8fe44
All BAP client sources in the ISO group should use same target latency, so that capture streams stay in sync.
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/* Spa Bluez5 ISO I/O */
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/* SPDX-FileCopyrightText: Copyright © 2023 Pauli Virtanen */
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/* SPDX-License-Identifier: MIT */
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#ifndef SPA_BLUEZ5_ISO_IO_H
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#define SPA_BLUEZ5_ISO_IO_H
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#include <spa/utils/defs.h>
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#include <spa/support/loop.h>
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#include <spa/support/log.h>
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#include <spa/node/io.h>
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#include <spa/param/audio/format.h>
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struct spa_bt_decode_buffer;
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struct spa_bt_transport;
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/**
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* ISO I/O.
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*
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* Synchronizes related writes from different streams in the same group
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* to occur at same real time instant (or not at all).
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*/
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struct spa_bt_iso_io
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{
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uint64_t now; /**< Reference time position of next packet (read-only) */
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uint64_t duration; /**< ISO interval duration in ns (read-only) */
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bool resync; /**< Resync position for next packet; (pull callback sets to
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* false when done) */
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uint32_t timestamp; /**< Packet timestamp (set by pull callback) */
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uint8_t buf[4096]; /**< Packet data (set by pull callback) */
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size_t size; /**< Packet size (set by pull callback) */
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bool need_resync; /**< Resync requested (set by pull callback) */
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struct spa_audio_info format; /**< Audio format */
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void *codec_data; /**< Codec data */
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void *user_data;
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};
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typedef void (*spa_bt_iso_io_pull_t)(struct spa_bt_iso_io *io);
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struct spa_bt_iso_io *spa_bt_iso_io_create(struct spa_bt_transport *t,
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struct spa_log *log, struct spa_loop *data_loop, struct spa_system *data_system);
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struct spa_bt_iso_io *spa_bt_iso_io_attach(struct spa_bt_iso_io *io, struct spa_bt_transport *t);
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void spa_bt_iso_io_destroy(struct spa_bt_iso_io *io);
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void spa_bt_iso_io_set_cb(struct spa_bt_iso_io *io, spa_bt_iso_io_pull_t pull, void *user_data);
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int spa_bt_iso_io_recv_errqueue(struct spa_bt_iso_io *io);
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void spa_bt_iso_io_set_source_buffer(struct spa_bt_iso_io *io, struct spa_bt_decode_buffer *buffer);
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void spa_bt_iso_io_update_source_latency(struct spa_bt_iso_io *io);
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#endif
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