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137 lines
5.9 KiB
137 lines
5.9 KiB
/****************************************************************************** |
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* |
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* Copyright (C) 2015 Broadcom Corporation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at: |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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******************************************************************************/ |
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#pragma once |
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#include <stdint.h> |
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/******************* |
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* SCO Codec Types |
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*******************/ |
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typedef enum { |
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SCO_CODEC_NONE = 0x0000, |
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SCO_CODEC_CVSD = 0x0001, |
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SCO_CODEC_MSBC = 0x0002, |
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} sco_codec_t; |
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typedef enum { |
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ESCO_CODEC_CVSD = 0, |
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ESCO_CODEC_MSBC_T1, |
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ESCO_CODEC_MSBC_T2, |
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} esco_codec_t; |
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#define ESCO_NUM_CODECS 3 |
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// Coding Formats (BT 4.1 or later Assigned numbers) |
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#define ESCO_CODING_FORMAT_ULAW ((uint8_t)0x00) /* u-Law log */ |
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#define ESCO_CODING_FORMAT_ALAW ((uint8_t)0x01) /* A-Law log */ |
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#define ESCO_CODING_FORMAT_CVSD ((uint8_t)0x02) /* CVSD */ |
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#define ESCO_CODING_FORMAT_TRANSPNT ((uint8_t)0x03) /* Transparent */ |
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#define ESCO_CODING_FORMAT_LINEAR ((uint8_t)0x04) /* Linear PCM */ |
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#define ESCO_CODING_FORMAT_MSBC ((uint8_t)0x05) /* MSBC PCM */ |
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#define ESCO_CODING_FORMAT_VS ((uint8_t)0xFF) /* Specifies VSC used */ |
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typedef uint8_t esco_coding_format_t; |
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// PCM Data Formats (BT 4.1 or later Assigned numbers) |
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#define ESCO_PCM_DATA_FORMAT_NA \ |
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((uint8_t)0x00) /* N/A to coding format in use */ |
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#define ESCO_PCM_DATA_FORMAT_1_COMP ((uint8_t)0x01) /* 1's complement */ |
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#define ESCO_PCM_DATA_FORMAT_2_COMP ((uint8_t)0x02) /* 2's complement */ |
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#define ESCO_PCM_DATA_FORMAT_SIGN ((uint8_t)0x03) /* Sign-magnitude */ |
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#define ESCO_PCM_DATA_FORMAT_UNSIGN ((uint8_t)0x04) /* Unsigned */ |
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typedef uint8_t esco_pcm_data_format_t; |
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// SCO Data Path |
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#define ESCO_DATA_PATH_PCM 1 /* 0x01-0xFE (PCM Chan) */ |
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#define ESCO_DATA_PATH_HCI ((uint8_t)0x00) /* HCI-0, 0x01-0xFE (PCM Chan) */ |
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#define ESCO_DATA_PATH_TEST ((uint8_t)0xFF) /* 0xFF-Audio Test */ |
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typedef uint8_t esco_data_path_t; |
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// eSCO constants |
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#define TXRX_64KBITS_RATE 0x00001f40 /* 64 kbits/sec data rate */ |
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#define TXRX_128KBITS_RATE 0x00003E80 /* 128 kbits/sec data rate */ |
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typedef uint32_t esco_txrx_bandwidth_t; |
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#define INPUT_OUTPUT_64K_RATE 0x00003E80 /* 16000 Bytes/sec over transport */ |
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#define INPUT_OUTPUT_128K_RATE 0x00007D00 /* 32000 Bytes/sec over transport */ |
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typedef uint32_t esco_io_bandwidth_t; |
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// Retransmission effort |
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#define ESCO_RETRANSMISSION_OFF 0 |
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#define ESCO_RETRANSMISSION_POWER 1 |
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#define ESCO_RETRANSMISSION_QUALITY 2 |
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#define ESCO_RETRANSMISSION_DONTCARE 0xff |
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typedef uint8_t esco_retransmission_effort_t; |
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// Definitions for eSCO packet type masks (BT1.2 and BT2.0 definitions) |
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#define ESCO_PKT_TYPES_MASK_HV1 0x0001 |
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#define ESCO_PKT_TYPES_MASK_HV2 0x0002 |
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#define ESCO_PKT_TYPES_MASK_HV3 0x0004 |
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#define ESCO_PKT_TYPES_MASK_EV3 0x0008 |
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#define ESCO_PKT_TYPES_MASK_EV4 0x0010 |
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#define ESCO_PKT_TYPES_MASK_EV5 0x0020 |
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#define ESCO_PKT_TYPES_MASK_NO_2_EV3 0x0040 |
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#define ESCO_PKT_TYPES_MASK_NO_3_EV3 0x0080 |
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#define ESCO_PKT_TYPES_MASK_NO_2_EV5 0x0100 |
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#define ESCO_PKT_TYPES_MASK_NO_3_EV5 0x0200 |
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typedef uint16_t esco_packet_types_t; |
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// type definition |
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typedef struct { |
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esco_coding_format_t coding_format; /* Coding Format*/ |
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uint16_t company_id; /* Company ID from BT SIG Assigned Numbers */ |
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uint16_t vendor_specific_codec_id; /* Vendor Specific Codec ID */ |
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} esco_coding_id_format_t; |
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// Enhanced setup/accept synchronous connection See BT 4.1 or later HCI spec for |
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// details |
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typedef struct { |
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esco_txrx_bandwidth_t |
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transmit_bandwidth; /* Transmit Bandwidth (in octets/second) */ |
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esco_txrx_bandwidth_t receive_bandwidth; /* RX BW (# of octets/second) */ |
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esco_coding_id_format_t transmit_coding_format; /* TX coding format */ |
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esco_coding_id_format_t receive_coding_format; /* RX coding format */ |
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uint16_t transmit_codec_frame_size; /* TX CODEC frame size (OTA frame size) */ |
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uint16_t receive_codec_frame_size; /* RX CODEC frame size (OTA frame size) */ |
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esco_io_bandwidth_t input_bandwidth; /* Input BW (nominal rate octets/sec) */ |
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esco_io_bandwidth_t |
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output_bandwidth; /* Output BW (nominal rate octets/sec) */ |
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esco_coding_id_format_t input_coding_format; /* Input coding format */ |
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esco_coding_id_format_t output_coding_format; /* Output coding format */ |
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uint16_t input_coded_data_size; /* Input coded data size (in bits) */ |
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uint16_t output_coded_data_size; /* Output coded data size (in bits) */ |
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esco_pcm_data_format_t |
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input_pcm_data_format; /* Input PCM data format (see hcidefs.h) */ |
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esco_pcm_data_format_t |
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output_pcm_data_format; /* Output PCM data format (see hcidefs.h) */ |
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uint8_t input_pcm_payload_msb_position; /* Input PCM sample payload MSB |
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position */ |
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uint8_t output_pcm_payload_msb_position; /* Output PCM sample payload MSB |
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position */ |
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esco_data_path_t input_data_path; /* 0x00 - HCI, or 0x01-0xFE for VS) */ |
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esco_data_path_t output_data_path; /* 0x00 - HCI, or 0x01-0xFE for VS) */ |
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uint8_t input_transport_unit_size; /* Input transport unit size */ |
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uint8_t output_transport_unit_size; /* Output transport unit size */ |
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uint16_t max_latency_ms; /* Maximum latency (0x4-0xFFFE in msecs) */ |
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esco_packet_types_t packet_types; /* Packet Types */ |
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esco_retransmission_effort_t |
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retransmission_effort; /* 0x00-0x02, 0xFF don't care */ |
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} enh_esco_params_t; |
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// Get the enhanced eSCO configuration parameters for the provided |codec| |
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enh_esco_params_t esco_parameters_for_codec(esco_codec_t codec);
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