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 "a2dp_codec_api.h" 25 #include "a2dp_vendor_ldac_constants.h" 26 #include "avdt_api.h" 27 28 class A2dpCodecConfigLdacBase : public A2dpCodecConfig { 29 protected: A2dpCodecConfigLdacBase(btav_a2dp_codec_index_t codec_index,const std::string & name,btav_a2dp_codec_priority_t codec_priority,bool is_source)30 A2dpCodecConfigLdacBase(btav_a2dp_codec_index_t codec_index, 31 const std::string& name, 32 btav_a2dp_codec_priority_t codec_priority, 33 bool is_source) 34 : A2dpCodecConfig(codec_index, name, codec_priority), 35 is_source_(is_source) {} 36 bool setCodecConfig(const uint8_t* p_peer_codec_info, bool is_capability, 37 uint8_t* p_result_codec_config) override; 38 bool setPeerCodecCapabilities( 39 const uint8_t* p_peer_codec_capabilities) override; 40 41 private: 42 bool is_source_; // True if local is Source 43 }; 44 45 class A2dpCodecConfigLdacSource : public A2dpCodecConfigLdacBase { 46 public: 47 A2dpCodecConfigLdacSource(btav_a2dp_codec_priority_t codec_priority); 48 virtual ~A2dpCodecConfigLdacSource(); 49 50 bool init() override; 51 uint64_t encoderIntervalMs() const override; 52 int getEffectiveMtu() const override; 53 54 private: 55 bool useRtpHeaderMarkerBit() const override; 56 bool updateEncoderUserConfig( 57 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 58 bool* p_restart_input, bool* p_restart_output, 59 bool* p_config_updated) override; 60 void debug_codec_dump(int fd) override; 61 }; 62 63 class A2dpCodecConfigLdacSink : public A2dpCodecConfigLdacBase { 64 public: 65 A2dpCodecConfigLdacSink(btav_a2dp_codec_priority_t codec_priority); 66 virtual ~A2dpCodecConfigLdacSink(); 67 68 bool init() override; 69 uint64_t encoderIntervalMs() const override; 70 int getEffectiveMtu() const override; 71 72 private: 73 bool useRtpHeaderMarkerBit() const override; 74 bool updateEncoderUserConfig( 75 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 76 bool* p_restart_input, bool* p_restart_output, 77 bool* p_config_updated) override; 78 }; 79 80 // Checks whether the codec capabilities contain a valid A2DP LDAC Source 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_IsVendorSourceCodecValidLdac(const uint8_t* p_codec_info); 86 87 // Checks whether the codec capabilities contain a valid 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_IsVendorSinkCodecValidLdac(const uint8_t* p_codec_info); 93 94 // Checks whether the codec capabilities contain a valid peer A2DP LDAC Sink 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_IsVendorPeerSinkCodecValidLdac(const uint8_t* p_codec_info); 100 101 // Checks whether the codec capabilities contain a valid peer A2DP LDAC Source 102 // codec. 103 // NOTE: only codecs that are implemented are considered valid. 104 // Returns true if |p_codec_info| contains information about a valid LDAC 105 // codec, otherwise false. 106 bool A2DP_IsVendorPeerSourceCodecValidLdac(const uint8_t* p_codec_info); 107 108 // Checks whether A2DP LDAC Sink codec is supported. 109 // |p_codec_info| contains information about the codec capabilities. 110 // Returns true if the A2DP LDAC Sink codec is supported, otherwise false. 111 bool A2DP_IsVendorSinkCodecSupportedLdac(const uint8_t* p_codec_info); 112 113 // Checks whether an A2DP LDAC Source codec for a peer Source device is 114 // supported. 115 // |p_codec_info| contains information about the codec capabilities of the 116 // peer device. 117 // Returns true if the A2DP LDAC Source codec for a peer Source device is 118 // supported, otherwise false. 119 bool A2DP_IsPeerSourceCodecSupportedLdac(const uint8_t* p_codec_info); 120 121 // Checks whether the A2DP data packets should contain RTP header. 122 // |content_protection_enabled| is true if Content Protection is 123 // enabled. |p_codec_info| contains information about the codec capabilities. 124 // Returns true if the A2DP data packets should contain RTP header, otherwise 125 // false. 126 bool A2DP_VendorUsesRtpHeaderLdac(bool content_protection_enabled, 127 const uint8_t* p_codec_info); 128 129 // Gets the A2DP LDAC codec name for a given |p_codec_info|. 130 const char* A2DP_VendorCodecNameLdac(const uint8_t* p_codec_info); 131 132 // Checks whether two A2DP LDAC codecs |p_codec_info_a| and |p_codec_info_b| 133 // have the same type. 134 // Returns true if the two codecs have the same type, otherwise false. 135 bool A2DP_VendorCodecTypeEqualsLdac(const uint8_t* p_codec_info_a, 136 const uint8_t* p_codec_info_b); 137 138 // Checks whether two A2DP LDAC codecs |p_codec_info_a| and |p_codec_info_b| 139 // are exactly the same. 140 // Returns true if the two codecs are exactly the same, otherwise false. 141 // If the codec type is not LDAC, the return value is false. 142 bool A2DP_VendorCodecEqualsLdac(const uint8_t* p_codec_info_a, 143 const uint8_t* p_codec_info_b); 144 145 // Gets the track sample rate value for the A2DP LDAC codec. 146 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 147 // Returns the track sample rate on success, or -1 if |p_codec_info| 148 // contains invalid codec information. 149 int A2DP_VendorGetTrackSampleRateLdac(const uint8_t* p_codec_info); 150 151 // Gets the track bits per sample value for the A2DP LDAC codec. 152 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 153 // Returns the track bits per sample on success, or -1 if |p_codec_info| 154 // contains invalid codec information. 155 int A2DP_VendorGetTrackBitsPerSampleLdac(const uint8_t* p_codec_info); 156 157 // Gets the track bitrate value for the A2DP LDAC codec. 158 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 159 // Returns the track sample rate on success, or -1 if |p_codec_info| 160 // contains invalid codec information. 161 int A2DP_VendorGetBitRateLdac(const uint8_t* p_codec_info); 162 163 // Gets the channel count for the A2DP LDAC codec. 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_VendorGetTrackChannelCountLdac(const uint8_t* p_codec_info); 168 169 // Gets the channel type for the A2DP LDAC codec. 170 // 1 for mono, or 3 for dual channel/stereo. 171 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 172 // Returns the channel count on success, or -1 if |p_codec_info| 173 // contains invalid codec information. 174 int A2DP_VendorGetSinkTrackChannelTypeLdac(const uint8_t* p_codec_info); 175 176 // Gets the channel mode code for the A2DP LDAC codec. 177 // The actual value is codec-specific - see |A2DP_LDAC_CHANNEL_MODE_*|. 178 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 179 // Returns the channel mode code on success, or -1 if |p_codec_info| 180 // contains invalid codec information. 181 int A2DP_VendorGetChannelModeCodeLdac(const uint8_t* p_codec_info); 182 183 // Gets the A2DP LDAC audio data timestamp from an audio packet. 184 // |p_codec_info| contains the codec information. 185 // |p_data| contains the audio data. 186 // The timestamp is stored in |p_timestamp|. 187 // Returns true on success, otherwise false. 188 bool A2DP_VendorGetPacketTimestampLdac(const uint8_t* p_codec_info, 189 const uint8_t* p_data, 190 uint32_t* p_timestamp); 191 192 // Builds A2DP LDAC codec header for audio data. 193 // |p_codec_info| contains the codec information. 194 // |p_buf| contains the audio data. 195 // |frames_per_packet| is the number of frames in this packet. 196 // Returns true on success, otherwise false. 197 bool A2DP_VendorBuildCodecHeaderLdac(const uint8_t* p_codec_info, BT_HDR* p_buf, 198 uint16_t frames_per_packet); 199 200 // Decodes A2DP LDAC codec info into a human readable string. 201 // |p_codec_info| is a pointer to the LDAC codec_info to decode. 202 // Returns a string describing the codec information. 203 std::string A2DP_VendorCodecInfoStringLdac(const uint8_t* p_codec_info); 204 205 // Gets the A2DP LDAC encoder interface that can be used to encode and prepare 206 // A2DP packets for transmission - see |tA2DP_ENCODER_INTERFACE|. 207 // |p_codec_info| contains the codec information. 208 // Returns the A2DP LDAC encoder interface if the |p_codec_info| is valid and 209 // supported, otherwise NULL. 210 const tA2DP_ENCODER_INTERFACE* A2DP_VendorGetEncoderInterfaceLdac( 211 const uint8_t* p_codec_info); 212 213 // Gets the current A2DP LDAC decoder interface that can be used to decode 214 // received A2DP packets - see |tA2DP_DECODER_INTERFACE|. 215 // |p_codec_info| contains the codec information. 216 // Returns the A2DP LDAC decoder interface if the |p_codec_info| is valid and 217 // supported, otherwise NULL. 218 const tA2DP_DECODER_INTERFACE* A2DP_VendorGetDecoderInterfaceLdac( 219 const uint8_t* p_codec_info); 220 221 // Adjusts the A2DP LDAC codec, based on local support and Bluetooth 222 // specification. 223 // |p_codec_info| contains the codec information to adjust. 224 // Returns true if |p_codec_info| is valid and supported, otherwise false. 225 bool A2DP_VendorAdjustCodecLdac(uint8_t* p_codec_info); 226 227 // Gets the A2DP LDAC Source codec index for a given |p_codec_info|. 228 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 229 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 230 btav_a2dp_codec_index_t A2DP_VendorSourceCodecIndexLdac( 231 const uint8_t* p_codec_info); 232 233 // Gets the A2DP LDAC Sink codec index for a given |p_codec_info|. 234 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 235 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 236 btav_a2dp_codec_index_t A2DP_VendorSinkCodecIndexLdac( 237 const uint8_t* p_codec_info); 238 239 // Gets the A2DP LDAC Source codec name. 240 const char* A2DP_VendorCodecIndexStrLdac(void); 241 242 // Gets the A2DP LDAC Sink codec name. 243 const char* A2DP_VendorCodecIndexStrLdacSink(void); 244 245 // Initializes A2DP LDAC Source codec information into |AvdtpSepConfig| 246 // configuration entry pointed by |p_cfg|. 247 bool A2DP_VendorInitCodecConfigLdac(AvdtpSepConfig* p_cfg); 248 249 // Initializes A2DP LDAC Sink codec information into |AvdtpSepConfig| 250 // configuration entry pointed by |p_cfg|. 251 bool A2DP_VendorInitCodecConfigLdacSink(AvdtpSepConfig* p_cfg); 252 253 #endif // A2DP_VENDOR_LDAC_H 254