#ifndef fooa2dpcodechfoo #define fooa2dpcodechfoo /*** This file is part of PulseAudio. Copyright 2018-2019 Pali Rohár PulseAudio is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. PulseAudio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with PulseAudio; if not, see . ***/ #include #include "bt-codec-api.h" #define MAX_A2DP_CAPS_SIZE 254 #define DEFAULT_OUTPUT_RATE_REFRESH_INTERVAL_MS 500 typedef struct pa_a2dp_codec_capabilities { uint8_t size; uint8_t buffer[]; /* max size is 254 bytes */ } pa_a2dp_codec_capabilities; typedef struct pa_a2dp_codec_id { uint8_t codec_id; uint32_t vendor_id; uint16_t vendor_codec_id; } pa_a2dp_codec_id; typedef struct pa_a2dp_endpoint_conf { /* A2DP codec id */ pa_a2dp_codec_id id; /* True if codec is bi-directional and supports backchannel */ bool support_backchannel; /* Returns true if the codec can be supported on the system */ bool (*can_be_supported)(bool for_encoding); /* Returns true if codec accepts capabilities, for_encoding is true when * capabilities are used for encoding */ bool (*can_accept_capabilities)(const uint8_t *capabilities_buffer, uint8_t capabilities_size, bool for_encoding); /* Choose remote endpoint based on capabilities from hash map * (const char *endpoint -> const pa_a2dp_codec_capabilities *capability) * and returns corresponding endpoint key (or NULL when there is no valid), * for_encoder is true when capabilities hash map is used for encoding */ const char *(*choose_remote_endpoint)(const pa_hashmap *capabilities_hashmap, const pa_sample_spec *default_sample_spec, bool for_encoding); /* Fill codec capabilities, returns size of filled buffer */ uint8_t (*fill_capabilities)(uint8_t capabilities_buffer[MAX_A2DP_CAPS_SIZE]); /* Validate codec configuration, returns true on success */ bool (*is_configuration_valid)(const uint8_t *config_buffer, uint8_t config_size); /* Fill preferred codec configuration, returns size of filled buffer or 0 on failure */ uint8_t (*fill_preferred_configuration)(const pa_sample_spec *default_sample_spec, const uint8_t *capabilities_buffer, uint8_t capabilities_size, uint8_t config_buffer[MAX_A2DP_CAPS_SIZE]); /* Bluetooth codec */ pa_bt_codec bt_codec; } pa_a2dp_endpoint_conf; #endif