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 <stddef.h> 25 #include <stdint.h> 26 27 #include "a2dp_codec_api.h" 28 #include "a2dp_vendor_aptx_hd_constants.h" 29 #include "avdt_api.h" 30 #include "internal_include/bt_target.h" 31 #include "stack/include/bt_hdr.h" 32 33 class A2dpCodecConfigAptxHd : public A2dpCodecConfig { 34 public: 35 A2dpCodecConfigAptxHd(btav_a2dp_codec_priority_t codec_priority); 36 virtual ~A2dpCodecConfigAptxHd(); 37 38 bool init() override; 39 tA2DP_STATUS setCodecConfig(const uint8_t* p_peer_codec_info, bool is_capability, 40 uint8_t* p_result_codec_config) override; 41 bool setPeerCodecCapabilities(const uint8_t* p_peer_codec_capabilities) override; 42 43 private: 44 bool useRtpHeaderMarkerBit() const override; 45 void debug_codec_dump(int fd) override; 46 }; 47 48 // Checks whether the codec capabilities contain a valid A2DP aptX-HD Source 49 // codec. 50 // NOTE: only codecs that are implemented are considered valid. 51 // Returns true if |p_codec_info| contains information about a valid aptX-HD 52 // codec, otherwise false. 53 bool A2DP_IsCodecValidAptxHd(const uint8_t* p_codec_info); 54 55 // Checks whether the codec capabilities contain a valid peer A2DP aptX-HD Sink 56 // codec. 57 // NOTE: only codecs that are implemented are considered valid. 58 // Returns true if |p_codec_info| contains information about a valid aptX-HD 59 // codec, otherwise false. 60 bool A2DP_IsVendorPeerSinkCodecValidAptxHd(const uint8_t* p_codec_info); 61 62 // Checks whether the A2DP data packets should contain RTP header. 63 // |content_protection_enabled| is true if Content Protection is 64 // enabled. |p_codec_info| contains information about the codec capabilities. 65 // Returns true if the A2DP data packets should contain RTP header, otherwise 66 // false. 67 bool A2DP_VendorUsesRtpHeaderAptxHd(bool content_protection_enabled, const uint8_t* p_codec_info); 68 69 // Gets the A2DP aptX-HD codec name for a given |p_codec_info|. 70 const char* A2DP_VendorCodecNameAptxHd(const uint8_t* p_codec_info); 71 72 // Checks whether two A2DP aptX-HD codecs |p_codec_info_a| and |p_codec_info_b| 73 // have the same type. 74 // Returns true if the two codecs have the same type, otherwise false. 75 bool A2DP_VendorCodecTypeEqualsAptxHd(const uint8_t* p_codec_info_a, const uint8_t* p_codec_info_b); 76 77 // Checks whether two A2DP aptX-HD codecs |p_codec_info_a| and |p_codec_info_b| 78 // are exactly the same. 79 // Returns true if the two codecs are exactly the same, otherwise false. 80 // If the codec type is not aptX-HD, the return value is false. 81 bool A2DP_VendorCodecEqualsAptxHd(const uint8_t* p_codec_info_a, const uint8_t* p_codec_info_b); 82 83 // Gets the track sample rate value for the A2DP aptX-HD codec. 84 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 85 // Returns the track sample rate on success, or -1 if |p_codec_info| 86 // contains invalid codec information. 87 int A2DP_VendorGetTrackSampleRateAptxHd(const uint8_t* p_codec_info); 88 89 // Gets the track bits per sample value for the A2DP aptX-HD codec. 90 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 91 // Returns the track bits per sample on success, or -1 if |p_codec_info| 92 // contains invalid codec information. 93 int A2DP_VendorGetTrackBitsPerSampleAptxHd(const uint8_t* p_codec_info); 94 95 // Gets the track bitrate value for the A2DP aptX-HD codec. 96 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 97 // Returns the track sample rate on success, or -1 if |p_codec_info| 98 // contains invalid codec information. 99 int A2DP_VendorGetBitRateAptxHd(const uint8_t* p_codec_info); 100 101 // Gets the channel count for the A2DP aptX-HD codec. 102 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 103 // Returns the channel count on success, or -1 if |p_codec_info| 104 // contains invalid codec information. 105 int A2DP_VendorGetTrackChannelCountAptxHd(const uint8_t* p_codec_info); 106 107 // Gets the A2DP aptX-HD audio data timestamp from an audio packet. 108 // |p_codec_info| contains the codec information. 109 // |p_data| contains the audio data. 110 // The timestamp is stored in |p_timestamp|. 111 // Returns true on success, otherwise false. 112 bool A2DP_VendorGetPacketTimestampAptxHd(const uint8_t* p_codec_info, 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, BT_HDR* p_buf, 121 uint16_t frames_per_packet); 122 123 // Decodes A2DP aptX-HD codec info into a human readable string. 124 // |p_codec_info| is a pointer to the aptX-HD codec_info to decode. 125 // Returns a string describing the codec information. 126 std::string A2DP_VendorCodecInfoStringAptxHd(const uint8_t* p_codec_info); 127 128 // Gets the A2DP aptX-HD encoder interface that can be used to encode and 129 // prepare A2DP packets for transmission - see |tA2DP_ENCODER_INTERFACE|. 130 // |p_codec_info| contains the codec information. 131 // Returns the A2DP aptX-HD encoder interface if the |p_codec_info| is valid 132 // and supported, otherwise NULL. 133 const tA2DP_ENCODER_INTERFACE* A2DP_VendorGetEncoderInterfaceAptxHd(const uint8_t* p_codec_info); 134 135 // Adjusts the A2DP aptX-HD codec, based on local support and Bluetooth 136 // specification. 137 // |p_codec_info| contains the codec information to adjust. 138 // Returns true if |p_codec_info| is valid and supported, otherwise false. 139 bool A2DP_VendorAdjustCodecAptxHd(uint8_t* p_codec_info); 140 141 // Gets the A2DP aptX-HD Source codec index for a given |p_codec_info|. 142 // Returns the corresponding |btav_a2dp_codec_index_t| on success, 143 // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. 144 btav_a2dp_codec_index_t A2DP_VendorSourceCodecIndexAptxHd(const uint8_t* p_codec_info); 145 146 // Gets the A2DP aptX-HD Source codec name. 147 const char* A2DP_VendorCodecIndexStrAptxHd(void); 148 149 // Initializes A2DP aptX-HD Source codec information into |AvdtpSepConfig| 150 // configuration entry pointed by |p_cfg|. 151 bool A2DP_VendorInitCodecConfigAptxHd(AvdtpSepConfig* p_cfg); 152 153 #endif // A2DP_VENDOR_APTX_HD_H 154