1 /* 2 * Copyright 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // 18 // A2DP Codec API for LDAC 19 // 20 21 #ifndef A2DP_VENDOR_LDAC_H 22 #define A2DP_VENDOR_LDAC_H 23 24 #include <stddef.h> 25 #include <stdint.h> 26 27 #include "a2dp_codec_api.h" 28 #include "a2dp_vendor_ldac_constants.h" 29 #include "avdt_api.h" 30 #include "internal_include/bt_target.h" 31 #include "stack/include/bt_hdr.h" 32 33 class A2dpCodecConfigLdacBase : public A2dpCodecConfig { 34 protected: A2dpCodecConfigLdacBase(btav_a2dp_codec_index_t codec_index,const std::string & name,btav_a2dp_codec_priority_t codec_priority,bool is_source)35 A2dpCodecConfigLdacBase(btav_a2dp_codec_index_t codec_index, 36 const std::string& name, 37 btav_a2dp_codec_priority_t codec_priority, 38 bool is_source) 39 : A2dpCodecConfig(codec_index, A2DP_CODEC_ID_LDAC, name, codec_priority), 40 is_source_(is_source) {} 41 bool setCodecConfig(const uint8_t* p_peer_codec_info, bool is_capability, 42 uint8_t* p_result_codec_config) override; 43 bool setPeerCodecCapabilities( 44 const uint8_t* p_peer_codec_capabilities) override; 45 46 private: 47 [[maybe_unused]] bool is_source_; // True if local is Source 48 }; 49 50 class A2dpCodecConfigLdacSource : public A2dpCodecConfigLdacBase { 51 public: 52 A2dpCodecConfigLdacSource(btav_a2dp_codec_priority_t codec_priority); 53 virtual ~A2dpCodecConfigLdacSource(); 54 55 bool init() override; 56 57 private: 58 bool useRtpHeaderMarkerBit() const override; 59 void debug_codec_dump(int fd) override; 60 }; 61 62 class A2dpCodecConfigLdacSink : public A2dpCodecConfigLdacBase { 63 public: 64 A2dpCodecConfigLdacSink(btav_a2dp_codec_priority_t codec_priority); 65 virtual ~A2dpCodecConfigLdacSink(); 66 67 bool init() override; 68 69 private: 70 bool useRtpHeaderMarkerBit() const override; 71 }; 72 73 // Checks whether the codec capabilities contain a valid A2DP LDAC Source 74 // codec. 75 // NOTE: only codecs that are implemented are considered valid. 76 // Returns true if |p_codec_info| contains information about a valid LDAC 77 // codec, otherwise false. 78 bool A2DP_IsVendorSourceCodecValidLdac(const uint8_t* p_codec_info); 79 80 // Checks whether the codec capabilities contain a valid A2DP LDAC Sink 81 // codec. 82 // NOTE: only codecs that are implemented are considered valid. 83 // Returns true if |p_codec_info| contains information about a valid LDAC 84 // codec, otherwise false. 85 bool A2DP_IsVendorSinkCodecValidLdac(const uint8_t* p_codec_info); 86 87 // Checks whether the codec capabilities contain a valid peer A2DP LDAC Sink 88 // codec. 89 // NOTE: only codecs that are implemented are considered valid. 90 // Returns true if |p_codec_info| contains information about a valid LDAC 91 // codec, otherwise false. 92 bool A2DP_IsVendorPeerSinkCodecValidLdac(const uint8_t* p_codec_info); 93 94 // Checks whether the codec capabilities contain a valid peer A2DP LDAC Source 95 // codec. 96 // NOTE: only codecs that are implemented are considered valid. 97 // Returns true if |p_codec_info| contains information about a valid LDAC 98 // codec, otherwise false. 99 bool A2DP_IsVendorPeerSourceCodecValidLdac(const uint8_t* p_codec_info); 100 101 // Checks whether A2DP LDAC Sink codec is supported. 102 // |p_codec_info| contains information about the codec capabilities. 103 // Returns true if the A2DP LDAC Sink codec is supported, otherwise false. 104 bool A2DP_IsVendorSinkCodecSupportedLdac(const uint8_t* p_codec_info); 105 106 // Checks whether an A2DP LDAC Source codec for a peer Source device is 107 // supported. 108 // |p_codec_info| contains information about the codec capabilities of the 109 // peer device. 110 // Returns true if the A2DP LDAC Source codec for a peer Source device is 111 // supported, otherwise false. 112 bool A2DP_IsPeerSourceCodecSupportedLdac(const uint8_t* p_codec_info); 113 114 // Checks whether the A2DP data packets should contain RTP header. 115 // |content_protection_enabled| is true if Content Protection is 116 // enabled. |p_codec_info| contains information about the codec capabilities. 117 // Returns true if the A2DP data packets should contain RTP header, otherwise 118 // false. 119 bool A2DP_VendorUsesRtpHeaderLdac(bool content_protection_enabled, 120 const uint8_t* p_codec_info); 121 122 // Gets the A2DP LDAC codec name for a given |p_codec_info|. 123 const char* A2DP_VendorCodecNameLdac(const uint8_t* p_codec_info); 124 125 // Checks whether two A2DP LDAC codecs |p_codec_info_a| and |p_codec_info_b| 126 // have the same type. 127 // Returns true if the two codecs have the same type, otherwise false. 128 bool A2DP_VendorCodecTypeEqualsLdac(const uint8_t* p_codec_info_a, 129 const uint8_t* p_codec_info_b); 130 131 // Checks whether two A2DP LDAC codecs |p_codec_info_a| and |p_codec_info_b| 132 // are exactly the same. 133 // Returns true if the two codecs are exactly the same, otherwise false. 134 // If the codec type is not LDAC, the return value is false. 135 bool A2DP_VendorCodecEqualsLdac(const uint8_t* p_codec_info_a, 136 const uint8_t* p_codec_info_b); 137 138 // Gets the track sample rate value for the A2DP LDAC codec. 139 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 140 // Returns the track sample rate on success, or -1 if |p_codec_info| 141 // contains invalid codec information. 142 int A2DP_VendorGetTrackSampleRateLdac(const uint8_t* p_codec_info); 143 144 // Gets the track bits per sample value for the A2DP LDAC codec. 145 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 146 // Returns the track bits per sample on success, or -1 if |p_codec_info| 147 // contains invalid codec information. 148 int A2DP_VendorGetTrackBitsPerSampleLdac(const uint8_t* p_codec_info); 149 150 // Gets the track bitrate value for the A2DP LDAC codec. 151 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 152 // Returns the track sample rate on success, or -1 if |p_codec_info| 153 // contains invalid codec information. 154 int A2DP_VendorGetBitRateLdac(const uint8_t* p_codec_info); 155 156 // Gets the channel count for the A2DP LDAC codec. 157 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 158 // Returns the channel count on success, or -1 if |p_codec_info| 159 // contains invalid codec information. 160 int A2DP_VendorGetTrackChannelCountLdac(const uint8_t* p_codec_info); 161 162 // Gets the channel type for the A2DP LDAC codec. 163 // 1 for mono, or 3 for dual channel/stereo. 164 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 165 // Returns the channel count on success, or -1 if |p_codec_info| 166 // contains invalid codec information. 167 int A2DP_VendorGetSinkTrackChannelTypeLdac(const uint8_t* p_codec_info); 168 169 // Gets the channel mode code for the A2DP LDAC codec. 170 // The actual value is codec-specific - see |A2DP_LDAC_CHANNEL_MODE_*|. 171 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 172 // Returns the channel mode code on success, or -1 if |p_codec_info| 173 // contains invalid codec information. 174 int A2DP_VendorGetChannelModeCodeLdac(const uint8_t* p_codec_info); 175 176 // Gets the A2DP LDAC audio data timestamp from an audio packet. 177 // |p_codec_info| contains the codec information. 178 // |p_data| contains the audio data. 179 // The timestamp is stored in |p_timestamp|. 180 // Returns true on success, otherwise false. 181 bool A2DP_VendorGetPacketTimestampLdac(const uint8_t* p_codec_info, 182 const uint8_t* p_data, 183 uint32_t* p_timestamp); 184 185 // Builds A2DP LDAC codec header for audio data. 186 // |p_codec_info| contains the codec information. 187 // |p_buf| contains the audio data. 188 // |frames_per_packet| is the number of frames in this packet. 189 // Returns true on success, otherwise false. 190 bool A2DP_VendorBuildCodecHeaderLdac(const uint8_t* p_codec_info, BT_HDR* p_buf, 191 uint16_t frames_per_packet); 192 193 // Decodes A2DP LDAC codec info into a human readable string. 194 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 195 // Returns a string describing the codec information. 196 std::string A2DP_VendorCodecInfoStringLdac(const uint8_t* p_codec_info); 197 198 // Gets the A2DP LDAC encoder interface that can be used to encode and prepare 199 // A2DP packets for transmission - see |tA2DP_ENCODER_INTERFACE|. 200 // |p_codec_info| contains the codec information. 201 // Returns the A2DP LDAC encoder interface if the |p_codec_info| is valid and 202 // supported, otherwise NULL. 203 const tA2DP_ENCODER_INTERFACE* A2DP_VendorGetEncoderInterfaceLdac( 204 const uint8_t* p_codec_info); 205 206 // Gets the current A2DP LDAC decoder interface that can be used to decode 207 // received A2DP packets - see |tA2DP_DECODER_INTERFACE|. 208 // |p_codec_info| contains the codec information. 209 // Returns the A2DP LDAC decoder interface if the |p_codec_info| is valid and 210 // supported, otherwise NULL. 211 const tA2DP_DECODER_INTERFACE* A2DP_VendorGetDecoderInterfaceLdac( 212 const uint8_t* p_codec_info); 213 214 // Adjusts the A2DP LDAC codec, based on local support and Bluetooth 215 // specification. 216 // |p_codec_info| contains the codec information to adjust. 217 // Returns true if |p_codec_info| is valid and supported, otherwise false. 218 bool A2DP_VendorAdjustCodecLdac(uint8_t* p_codec_info); 219 220 // Gets the A2DP LDAC Source codec index for a given |p_codec_info|. 221 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 222 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 223 btav_a2dp_codec_index_t A2DP_VendorSourceCodecIndexLdac( 224 const uint8_t* p_codec_info); 225 226 // Gets the A2DP LDAC Sink codec index for a given |p_codec_info|. 227 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 228 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 229 btav_a2dp_codec_index_t A2DP_VendorSinkCodecIndexLdac( 230 const uint8_t* p_codec_info); 231 232 // Gets the A2DP LDAC Source codec name. 233 const char* A2DP_VendorCodecIndexStrLdac(void); 234 235 // Gets the A2DP LDAC Sink codec name. 236 const char* A2DP_VendorCodecIndexStrLdacSink(void); 237 238 // Initializes A2DP LDAC Source codec information into |AvdtpSepConfig| 239 // configuration entry pointed by |p_cfg|. 240 bool A2DP_VendorInitCodecConfigLdac(AvdtpSepConfig* p_cfg); 241 242 // Initializes A2DP LDAC Sink codec information into |AvdtpSepConfig| 243 // configuration entry pointed by |p_cfg|. 244 bool A2DP_VendorInitCodecConfigLdacSink(AvdtpSepConfig* p_cfg); 245 246 #endif // A2DP_VENDOR_LDAC_H 247