| /* |
| * Copyright 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // |
| // A2DP Codec API for aptX |
| // |
| |
| #ifndef A2DP_VENDOR_APTX_H |
| #define A2DP_VENDOR_APTX_H |
| |
| #include "a2dp_codec_api.h" |
| #include "a2dp_vendor_aptx_constants.h" |
| #include "avdt_api.h" |
| |
| class A2dpCodecConfigAptx : public A2dpCodecConfig { |
| public: |
| A2dpCodecConfigAptx(btav_a2dp_codec_priority_t codec_priority); |
| virtual ~A2dpCodecConfigAptx(); |
| |
| bool init() override; |
| uint64_t encoderIntervalMs() const override; |
| int getEffectiveMtu() const override; |
| bool setCodecConfig(const uint8_t* p_peer_codec_info, bool is_capability, |
| uint8_t* p_result_codec_config) override; |
| bool setPeerCodecCapabilities( |
| const uint8_t* p_peer_codec_capabilities) override; |
| |
| private: |
| bool useRtpHeaderMarkerBit() const override; |
| bool updateEncoderUserConfig( |
| const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, |
| bool* p_restart_input, bool* p_restart_output, |
| bool* p_config_updated) override; |
| void debug_codec_dump(int fd) override; |
| }; |
| |
| // Checks whether the codec capabilities contain a valid A2DP aptX Source |
| // codec. |
| // NOTE: only codecs that are implemented are considered valid. |
| // Returns true if |p_codec_info| contains information about a valid aptX |
| // codec, otherwise false. |
| bool A2DP_IsVendorSourceCodecValidAptx(const uint8_t* p_codec_info); |
| |
| // Checks whether the codec capabilities contain a valid peer A2DP aptX Sink |
| // codec. |
| // NOTE: only codecs that are implemented are considered valid. |
| // Returns true if |p_codec_info| contains information about a valid aptX |
| // codec, otherwise false. |
| bool A2DP_IsVendorPeerSinkCodecValidAptx(const uint8_t* p_codec_info); |
| |
| // Checks whether the A2DP data packets should contain RTP header. |
| // |content_protection_enabled| is true if Content Protection is |
| // enabled. |p_codec_info| contains information about the codec capabilities. |
| // Returns true if the A2DP data packets should contain RTP header, otherwise |
| // false. |
| bool A2DP_VendorUsesRtpHeaderAptx(bool content_protection_enabled, |
| const uint8_t* p_codec_info); |
| |
| // Gets the A2DP aptX codec name for a given |p_codec_info|. |
| const char* A2DP_VendorCodecNameAptx(const uint8_t* p_codec_info); |
| |
| // Checks whether two A2DP aptX codecs |p_codec_info_a| and |p_codec_info_b| |
| // have the same type. |
| // Returns true if the two codecs have the same type, otherwise false. |
| bool A2DP_VendorCodecTypeEqualsAptx(const uint8_t* p_codec_info_a, |
| const uint8_t* p_codec_info_b); |
| |
| // Checks whether two A2DP aptX codecs |p_codec_info_a| and |p_codec_info_b| |
| // are exactly the same. |
| // Returns true if the two codecs are exactly the same, otherwise false. |
| // If the codec type is not aptX, the return value is false. |
| bool A2DP_VendorCodecEqualsAptx(const uint8_t* p_codec_info_a, |
| const uint8_t* p_codec_info_b); |
| |
| // Gets the track sample rate value for the A2DP aptX codec. |
| // |p_codec_info| is a pointer to the aptX codec_info to decode. |
| // Returns the track sample rate on success, or -1 if |p_codec_info| |
| // contains invalid codec information. |
| int A2DP_VendorGetTrackSampleRateAptx(const uint8_t* p_codec_info); |
| |
| // Gets the track bits per sample value for the A2DP aptX codec. |
| // |p_codec_info| is a pointer to the aptX codec_info to decode. |
| // Returns the track bits per sample on success, or -1 if |p_codec_info| |
| // contains invalid codec information. |
| int A2DP_VendorGetTrackBitsPerSampleAptx(const uint8_t* p_codec_info); |
| |
| // Gets the track bitrate value for the A2DP aptX codec. |
| // |p_codec_info| is a pointer to the aptX codec_info to decode. |
| // Returns the track sample rate on success, or -1 if |p_codec_info| |
| // contains invalid codec information. |
| int A2DP_VendorGetBitRateAptx(const uint8_t* p_codec_info); |
| |
| // Gets the channel count for the A2DP aptX codec. |
| // |p_codec_info| is a pointer to the aptX codec_info to decode. |
| // Returns the channel count on success, or -1 if |p_codec_info| |
| // contains invalid codec information. |
| int A2DP_VendorGetTrackChannelCountAptx(const uint8_t* p_codec_info); |
| |
| // Gets the A2DP aptX audio data timestamp from an audio packet. |
| // |p_codec_info| contains the codec information. |
| // |p_data| contains the audio data. |
| // The timestamp is stored in |p_timestamp|. |
| // Returns true on success, otherwise false. |
| bool A2DP_VendorGetPacketTimestampAptx(const uint8_t* p_codec_info, |
| const uint8_t* p_data, |
| uint32_t* p_timestamp); |
| |
| // Builds A2DP aptX codec header for audio data. |
| // |p_codec_info| contains the codec information. |
| // |p_buf| contains the audio data. |
| // |frames_per_packet| is the number of frames in this packet. |
| // Returns true on success, otherwise false. |
| bool A2DP_VendorBuildCodecHeaderAptx(const uint8_t* p_codec_info, BT_HDR* p_buf, |
| uint16_t frames_per_packet); |
| |
| // Decodes A2DP aptX codec info into a human readable string. |
| // |p_codec_info| is a pointer to the aptX codec_info to decode. |
| // Returns a string describing the codec information. |
| std::string A2DP_VendorCodecInfoStringAptx(const uint8_t* p_codec_info); |
| |
| // Gets the A2DP aptX encoder interface that can be used to encode and prepare |
| // A2DP packets for transmission - see |tA2DP_ENCODER_INTERFACE|. |
| // |p_codec_info| contains the codec information. |
| // Returns the A2DP aptX encoder interface if the |p_codec_info| is valid and |
| // supported, otherwise NULL. |
| const tA2DP_ENCODER_INTERFACE* A2DP_VendorGetEncoderInterfaceAptx( |
| const uint8_t* p_codec_info); |
| |
| // Adjusts the A2DP aptX codec, based on local support and Bluetooth |
| // specification. |
| // |p_codec_info| contains the codec information to adjust. |
| // Returns true if |p_codec_info| is valid and supported, otherwise false. |
| bool A2DP_VendorAdjustCodecAptx(uint8_t* p_codec_info); |
| |
| // Gets the A2DP aptX Source codec index for a given |p_codec_info|. |
| // Returns the corresponding |btav_a2dp_codec_index_t| on success, |
| // otherwise |BTAV_A2DP_CODEC_INDEX_MAX|. |
| btav_a2dp_codec_index_t A2DP_VendorSourceCodecIndexAptx( |
| const uint8_t* p_codec_info); |
| |
| // Gets the A2DP aptX Source codec name. |
| const char* A2DP_VendorCodecIndexStrAptx(void); |
| |
| // Initializes A2DP aptX Source codec information into |AvdtpSepConfig| |
| // configuration entry pointed by |p_cfg|. |
| bool A2DP_VendorInitCodecConfigAptx(AvdtpSepConfig* p_cfg); |
| |
| #endif // A2DP_VENDOR_APTX_H |