diff --git a/src/Makefile.inc b/src/Makefile.inc index d4432445b..185d2c109 100644 --- a/src/Makefile.inc +++ b/src/Makefile.inc @@ -17,6 +17,7 @@ SRC_FILES = \ hci_transport_em9304_spi.c \ hci.c \ btstack_slip.c \ + btstack_audio.c \ hci_transport_h5.c \ btstack_tlv.c \ btstack_crypto.c \ diff --git a/src/btstack_audio.c b/src/btstack_audio.c new file mode 100644 index 000000000..e8c49174b --- /dev/null +++ b/src/btstack_audio.c @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2017 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. + * 4. Any redistribution, use, or modification is done solely for + * personal benefit and not for any commercial purpose or for + * monetary gain. + * + * 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 MATTHIAS + * RINGWALD 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. + * + * Please inquire about commercial licensing options at + * contact@bluekitchen-gmbh.com + * + */ + +#include "btstack_audio.h" + +/* + * btstack_audio.c + * + */ + +static const btstack_audio_t * btstack_audio_instance; + +/** + * @brief Get BTstack Audio Instance + * @returns btstack_audio implementation + */ +const btstack_audio_t * btstack_audio_get_instance(void){ + return btstack_audio_instance; +} + +/** + * @brief Get BTstack Audio Instance + * @param btstack_audio implementation + */ +void btstack_audio_set_instance(const btstack_audio_t * audio_impl){ + btstack_audio_instance = audio_impl; +} diff --git a/src/btstack_audio.h b/src/btstack_audio.h new file mode 100644 index 000000000..6a82731c7 --- /dev/null +++ b/src/btstack_audio.h @@ -0,0 +1,101 @@ +/* + * Copyright (C) 2017 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. + * 4. Any redistribution, use, or modification is done solely for + * personal benefit and not for any commercial purpose or for + * monetary gain. + * + * 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 MATTHIAS + * RINGWALD 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. + * + * Please inquire about commercial licensing options at + * contact@bluekitchen-gmbh.com + * + */ + +#ifndef __BTSTACK_AUDIO_DMA_H +#define __BTSTACK_AUDIO_DMA_H + +#include + +#if defined __cplusplus +extern "C" { +#endif + +/* + * btstack_audio.h + * + * Abstraction layer for 16-bit audio playback and recording within BTstack + */ + +typedef struct { + + /** + * @brief Setup audio codec for specified samplerate and number of channels + * @param Channels (1=mono, 2=stereo) + * @param Sample rate + * @param Playback callback + * @param Recording callback + * @return 1 on success + */ + int (*init)(uint8_t channels, + uint32_t samplerate, + void (*playback) ( int16_t * buffer, uint16_t num_samples), + void (*recording)(const int16_t * buffer, uint16_t num_samples)); + + /** + * @brief Start stream + */ + void (*start_stream)(void); + + /** + * @brief Close audio codec + */ + void (*close)(void); + +} btstack_audio_t; + +/** + * @brief Get BTstack Audio Instance + * @returns btstack_audio implementation + */ +const btstack_audio_t * btstack_audio_get_instance(void); + +/** + * @brief Get BTstack Audio Instance + * @param btstack_audio implementation + */ +void btstack_audio_set_instance(const btstack_audio_t * audio_impl); + + +// common implementations +const btstack_audio_t * btstack_audio_portaudio_get_instance(void); +const btstack_audio_t * btstack_audio_embedded_get_instance(void); + +#if defined __cplusplus +} +#endif + +#endif