diff options
Diffstat (limited to 'lib/virtual_oss/bt/bt.h')
| -rw-r--r-- | lib/virtual_oss/bt/bt.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/lib/virtual_oss/bt/bt.h b/lib/virtual_oss/bt/bt.h new file mode 100644 index 000000000000..2abdb9eb021a --- /dev/null +++ b/lib/virtual_oss/bt/bt.h @@ -0,0 +1,116 @@ +/*- + * Copyright (c) 2015 Hans Petter Selasky + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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. + */ + +#ifndef _BACKEND_BT_H_ +#define _BACKEND_BT_H_ + +#ifdef HAVE_LIBAV +#include <libavformat/avformat.h> +#include <libavcodec/avcodec.h> +#include <libavutil/opt.h> +#endif + +#include "sbc_encode.h" + +struct bt_config { + uint8_t sep; /* SEID of the peer */ + uint8_t media_Type; + uint8_t chmode; +#define MODE_STEREO 2 +#define MODE_JOINT 3 +#define MODE_DUAL 1 +#define MODE_MONO 0 + uint8_t allocm; +#define ALLOC_LOUDNESS 0 +#define ALLOC_SNR 1 + uint8_t bitpool; + uint8_t bands; +#define BANDS_4 0 +#define BANDS_8 1 + uint8_t blocks; +#define BLOCKS_4 0 +#define BLOCKS_8 1 +#define BLOCKS_12 2 +#define BLOCKS_16 3 + uint8_t freq; +#define FREQ_UNDEFINED 255 +#define FREQ_16K 0 +#define FREQ_32K 1 +#define FREQ_44_1K 2 +#define FREQ_48K 3 + uint16_t mtu; + uint8_t codec; +#define CODEC_SBC 0x00 +#define CODEC_AAC 0x02 + uint8_t aacMode1; + uint8_t aacMode2; + + /* transcoding handle(s) */ + union { +#ifdef HAVE_LIBAV + struct { + AVCodec *codec; + AVCodecContext *context; + AVFormatContext *format; + AVFrame *frame; + AVStream *stream; + } av; +#endif + struct sbc_encode *sbc_enc; + } handle; + + /* audio input buffer */ + uint32_t rem_in_len; + uint32_t rem_in_size; + uint8_t *rem_in_data; + + /* data transport */ + uint32_t mtu_seqnumber; + uint32_t mtu_timestamp; + uint32_t mtu_offset; + + /* bluetooth file handles */ + int fd; + int hc; + + /* scratch buffer */ + uint8_t mtu_data[65536]; + + /* acceptor state */ + int8_t acceptor_state; +#define acpInitial 1 +#define acpConfigurationSet 2 +#define acpStreamOpened 3 +#define acpStreamStarted 4 +#define acpStreamSuspended 5 +#define acpStreamClosed 6 +}; + +size_t sbc_encode_frame(struct bt_config *); +size_t sbc_decode_frame(struct bt_config *, int); + +int bt_receive(struct bt_config *cfg, void *ptr, int len, int use_delay); + +#endif /* _BACKEND_BT_H_ */ |