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 aptX-HD 19 // 20 21 #ifndef A2DP_VENDOR_APTX_HD_H 22 #define A2DP_VENDOR_APTX_HD_H 23 24 #include "a2dp_codec_api.h" 25 #include "a2dp_vendor_aptx_hd_constants.h" 26 #include "avdt_api.h" 27 28 class A2dpCodecConfigAptxHd : public A2dpCodecConfig { 29 public: 30 A2dpCodecConfigAptxHd(btav_a2dp_codec_priority_t codec_priority); 31 virtual ~A2dpCodecConfigAptxHd(); 32 33 bool init() override; 34 period_ms_t encoderIntervalMs() const override; 35 int getEffectiveMtu() const override; 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 useRtpHeaderMarkerBit() const override; 43 bool updateEncoderUserConfig( 44 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 45 bool* p_restart_input, bool* p_restart_output, 46 bool* p_config_updated) override; 47 void debug_codec_dump(int fd) override; 48 }; 49 50 // Checks whether the codec capabilities contain a valid A2DP aptX-HD Source 51 // codec. 52 // NOTE: only codecs that are implemented are considered valid. 53 // Returns true if |p_codec_info| contains information about a valid aptX-HD 54 // codec, otherwise false. 55 bool A2DP_IsVendorSourceCodecValidAptxHd(const uint8_t* p_codec_info); 56 57 // Checks whether the codec capabilities contain a valid peer A2DP aptX-HD Sink 58 // codec. 59 // NOTE: only codecs that are implemented are considered valid. 60 // Returns true if |p_codec_info| contains information about a valid aptX-HD 61 // codec, otherwise false. 62 bool A2DP_IsVendorPeerSinkCodecValidAptxHd(const uint8_t* p_codec_info); 63 64 // Checks whether the A2DP data packets should contain RTP header. 65 // |content_protection_enabled| is true if Content Protection is 66 // enabled. |p_codec_info| contains information about the codec capabilities. 67 // Returns true if the A2DP data packets should contain RTP header, otherwise 68 // false. 69 bool A2DP_VendorUsesRtpHeaderAptxHd(bool content_protection_enabled, 70 const uint8_t* p_codec_info); 71 72 // Gets the A2DP aptX-HD codec name for a given |p_codec_info|. 73 const char* A2DP_VendorCodecNameAptxHd(const uint8_t* p_codec_info); 74 75 // Checks whether two A2DP aptX-HD codecs |p_codec_info_a| and |p_codec_info_b| 76 // have the same type. 77 // Returns true if the two codecs have the same type, otherwise false. 78 bool A2DP_VendorCodecTypeEqualsAptxHd(const uint8_t* p_codec_info_a, 79 const uint8_t* p_codec_info_b); 80 81 // Checks whether two A2DP aptX-HD codecs |p_codec_info_a| and |p_codec_info_b| 82 // are exactly the same. 83 // Returns true if the two codecs are exactly the same, otherwise false. 84 // If the codec type is not aptX-HD, the return value is false. 85 bool A2DP_VendorCodecEqualsAptxHd(const uint8_t* p_codec_info_a, 86 const uint8_t* p_codec_info_b); 87 88 // Gets the track sample rate value for the A2DP aptX-HD codec. 89 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 90 // Returns the track sample rate on success, or -1 if |p_codec_info| 91 // contains invalid codec information. 92 int A2DP_VendorGetTrackSampleRateAptxHd(const uint8_t* p_codec_info); 93 94 // Gets the track bitrate value for the A2DP aptX-HD codec. 95 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 96 // Returns the track sample rate on success, or -1 if |p_codec_info| 97 // contains invalid codec information. 98 int A2DP_VendorGetBitRateAptxHd(const uint8_t* p_codec_info); 99 100 // Gets the channel count for the A2DP aptX-HD codec. 101 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 102 // Returns the channel count on success, or -1 if |p_codec_info| 103 // contains invalid codec information. 104 int A2DP_VendorGetTrackChannelCountAptxHd(const uint8_t* p_codec_info); 105 106 // Gets the A2DP aptX-HD audio data timestamp from an audio packet. 107 // |p_codec_info| contains the codec information. 108 // |p_data| contains the audio data. 109 // The timestamp is stored in |p_timestamp|. 110 // Returns true on success, otherwise false. 111 bool A2DP_VendorGetPacketTimestampAptxHd(const uint8_t* p_codec_info, 112 const uint8_t* p_data, 113 uint32_t* p_timestamp); 114 115 // Builds A2DP aptX-HD codec header for audio data. 116 // |p_codec_info| contains the codec information. 117 // |p_buf| contains the audio data. 118 // |frames_per_packet| is the number of frames in this packet. 119 // Returns true on success, otherwise false. 120 bool A2DP_VendorBuildCodecHeaderAptxHd(const uint8_t* p_codec_info, 121 BT_HDR* p_buf, 122 uint16_t frames_per_packet); 123 124 // Decodes A2DP aptX-HD codec info into a human readable string. 125 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 126 // Returns a string describing the codec information. 127 std::string A2DP_VendorCodecInfoStringAptxHd(const uint8_t* p_codec_info); 128 129 // Gets the A2DP aptX-HD encoder interface that can be used to encode and 130 // prepare A2DP packets for transmission - see |tA2DP_ENCODER_INTERFACE|. 131 // |p_codec_info| contains the codec information. 132 // Returns the A2DP aptX-HD encoder interface if the |p_codec_info| is valid 133 // and supported, otherwise NULL. 134 const tA2DP_ENCODER_INTERFACE* A2DP_VendorGetEncoderInterfaceAptxHd( 135 const uint8_t* p_codec_info); 136 137 // Adjusts the A2DP aptX-HD codec, based on local support and Bluetooth 138 // specification. 139 // |p_codec_info| contains the codec information to adjust. 140 // Returns true if |p_codec_info| is valid and supported, otherwise false. 141 bool A2DP_VendorAdjustCodecAptxHd(uint8_t* p_codec_info); 142 143 // Gets the A2DP aptX-HD Source codec index for a given |p_codec_info|. 144 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 145 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 146 btav_a2dp_codec_index_t A2DP_VendorSourceCodecIndexAptxHd( 147 const uint8_t* p_codec_info); 148 149 // Gets the A2DP aptX-HD Source codec name. 150 const char* A2DP_VendorCodecIndexStrAptxHd(void); 151 152 // Initializes A2DP aptX-HD Source codec information into |AvdtpSepConfig| 153 // configuration entry pointed by |p_cfg|. 154 bool A2DP_VendorInitCodecConfigAptxHd(AvdtpSepConfig* p_cfg); 155 156 #endif // A2DP_VENDOR_APTX_HD_H 157
