xref: /btstack/example/le_audio_demo_util_sink.h (revision 04405944daf596bbfd35041c36bcd39e66e48ea4)

/*
 * Copyright (C) 2023 BlueKitchen GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

/**
 *  @brief Send/receive isochronous audio, used by le_audio_* demos
 */

#ifndef LE_AUDIO_DEMO_UTIL_SINK_H
#define LE_AUDIO_DEMO_UTIL_SINK_H

#include <stdint.h>
#include "bluetooth.h"
#include "btstack_bool.h"
#include "btstack_lc3.h"

#if defined __cplusplus
extern "C" {
#endif

enum btstack_codec_ids_e {
    BTSTACK_CODEC_ID_NONE = 0,
    BTSTACK_CODEC_ID_COUNTER,
    BTSTACK_CODEC_ID_LOOPBACK,
};

/**
 * @brief Init sink functionality
 * @param filename_wav
 */
void le_audio_demo_util_sink_init(const char * filename_wav);

/**
 * @brief Enable LC3plus if available for 10 ms frame duration
 * @param enable
 */
void le_audio_demo_util_sink_enable_lc3plus(bool enable);

/**
 * @brief Configure unicast sink
 *        Supported num_streams x num_channels_per_stream configurations: 1 x 1, 1 x 2, 2 x 1
 * @param num_streams
 * @param num_channels_per_stream
 * @param sampling_frequency_hz
 * @param frame_duration
 * @param octets_per_frame
 * @param iso_interval_1250us
 * @param flush_timeout
 */
void le_audio_demo_util_sink_configure_unicast(uint8_t num_streams, uint8_t num_channels_per_stream, uint32_t sampling_frequency_hz,
                                               btstack_lc3_frame_duration_t frame_duration, uint16_t octets_per_frame,
                                               uint32_t iso_interval_1250us, uint8_t flush_timeout);

/**
 * @brief Configure broadcast sink
 *        Supported num_streams x num_channels_per_stream configurations: 1 x 1, 1 x 2, 2 x 1
 * @param num_streams
 * @param num_channels_per_stream
 * @param sampling_frequency_hz
 * @param frame_duration
 * @param octets_per_frame
 * @param iso_interval_1250us
 * @param pre_transmission_offset
 */
void le_audio_demo_util_sink_configure_broadcast(uint8_t num_streams, uint8_t num_channels_per_stream, uint32_t sampling_frequency_hz,
                                               btstack_lc3_frame_duration_t frame_duration, uint16_t octets_per_frame,
                                               uint32_t iso_interval_1250us, uint8_t pre_transmission_offset);

/**
 * @brief Process ISO packet
 * @param stream_index
 * @param packet
 * @param size
 */
void le_audio_demo_util_sink_receive(uint8_t stream_index, uint8_t *packet, uint16_t size);

/**
 * @brief Analyze counting ISO packets
 * @param stream_index
 * @param packet
 * @param size
 */
void le_audio_demo_util_sink_count(uint8_t stream_index, uint8_t *packet, uint16_t size);

/**
 * @brief Close sink: close wav file, stop playbacl
 */
void le_audio_demo_util_sink_close(void);

#if defined __cplusplus
}
#endif
#endif // LE_AUDIO_DEMO_UTIL_SINK_H