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 // Interface to the A2DP aptX-HD Encoder 19 // 20 21 #ifndef A2DP_VENDOR_APTX_HD_ENCODER_H 22 #define A2DP_VENDOR_APTX_HD_ENCODER_H 23 24 #include "a2dp_codec_api.h" 25 #include "a2dp_vendor.h" 26 27 // Loads the A2DP aptX-HD encoder. 28 // Return loading codec status 29 tLOADING_CODEC_STATUS A2DP_VendorLoadEncoderAptxHd(void); 30 31 // Unloads the A2DP aptX-HD encoder. 32 void A2DP_VendorUnloadEncoderAptxHd(void); 33 34 // Initialize the A2DP aptX-HD encoder. 35 // |p_peer_params| contains the A2DP peer information. 36 // The current A2DP codec config is in |a2dp_codec_config|. 37 // |read_callback| is the callback for reading the input audio data. 38 // |enqueue_callback| is the callback for enqueueing the encoded audio data. 39 void a2dp_vendor_aptx_hd_encoder_init( 40 const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params, 41 A2dpCodecConfig* a2dp_codec_config, 42 a2dp_source_read_callback_t read_callback, 43 a2dp_source_enqueue_callback_t enqueue_callback); 44 45 // Cleanup the A2DP aptX-HD encoder. 46 void a2dp_vendor_aptx_hd_encoder_cleanup(void); 47 48 // Reset the feeding for the A2DP aptX-HD encoder. 49 void a2dp_vendor_aptx_hd_feeding_reset(void); 50 51 // Flush the feeding for the A2DP aptX-HD encoder. 52 void a2dp_vendor_aptx_hd_feeding_flush(void); 53 54 // Get the A2DP aptX-HD encoder interval (in milliseconds). 55 uint64_t a2dp_vendor_aptx_hd_get_encoder_interval_ms(void); 56 57 // Get the A2DP aptX-HD encoded maximum frame size 58 int a2dp_vendor_aptx_hd_get_effective_frame_size(); 59 60 // Prepare and send A2DP aptX-HD encoded frames. 61 // |timestamp_us| is the current timestamp (in microseconds). 62 void a2dp_vendor_aptx_hd_send_frames(uint64_t timestamp_us); 63 64 typedef int (*tAPTX_HD_ENCODER_INIT)(void* state, short endian); 65 66 typedef int (*tAPTX_HD_ENCODER_ENCODE_STEREO)(void* state, void* pcmL, 67 void* pcmR, void* buffer); 68 69 typedef int (*tAPTX_HD_ENCODER_SIZEOF_PARAMS)(void); 70 71 typedef struct { 72 tAPTX_HD_ENCODER_INIT init_func; 73 tAPTX_HD_ENCODER_ENCODE_STEREO encode_stereo_func; 74 tAPTX_HD_ENCODER_SIZEOF_PARAMS sizeof_params_func; 75 } tAPTX_HD_API; 76 77 // Filled the |external_api| with the ptr to the codec api 78 // return true if the codec is loaded 79 // This is for test purpose and ensure we are testing the api in real life 80 // condition 81 bool A2DP_VendorCopyAptxHdApi(tAPTX_HD_API& external_api); 82 83 #endif // A2DP_VENDOR_APTX_HD_ENCODER_H 84