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/*
* 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.
*/
//
// Interface to the A2DP aptX Encoder
//
#ifndef A2DP_VENDOR_APTX_ENCODER_H
#define A2DP_VENDOR_APTX_ENCODER_H
#include <stddef.h>
#include <stdint.h>
#include "a2dp_codec_api.h"
#include "a2dp_vendor.h"
// Loads the A2DP aptX encoder.
// Return loading status
tLOADING_CODEC_STATUS A2DP_VendorLoadEncoderAptx(void);
// Unloads the A2DP aptX encoder.
void A2DP_VendorUnloadEncoderAptx(void);
// Initialize the A2DP aptX encoder.
// |p_peer_params| contains the A2DP peer information.
// The current A2DP codec config is in |a2dp_codec_config|.
// |read_callback| is the callback for reading the input audio data.
// |enqueue_callback| is the callback for enqueueing the encoded audio data.
void a2dp_vendor_aptx_encoder_init(
const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
A2dpCodecConfig* a2dp_codec_config,
a2dp_source_read_callback_t read_callback,
a2dp_source_enqueue_callback_t enqueue_callback);
// Cleanup the A2DP aptX encoder.
void a2dp_vendor_aptx_encoder_cleanup(void);
// Reset the feeding for the A2DP aptX encoder.
void a2dp_vendor_aptx_feeding_reset(void);
// Flush the feeding for the A2DP aptX encoder.
void a2dp_vendor_aptx_feeding_flush(void);
// Get the A2DP aptX encoder interval (in milliseconds).
uint64_t a2dp_vendor_aptx_get_encoder_interval_ms(void);
// Get the A2DP aptX encoded maximum frame size
int a2dp_vendor_aptx_get_effective_frame_size();
// Prepare and send A2DP aptX encoded frames.
// |timestamp_us| is the current timestamp (in microseconds).
void a2dp_vendor_aptx_send_frames(uint64_t timestamp_us);
typedef int (*tAPTX_ENCODER_INIT)(void* state, short endian);
typedef int (*tAPTX_ENCODER_ENCODE_STEREO)(void* state, void* pcmL, void* pcmR,
void* buffer);
typedef int (*tAPTX_ENCODER_SIZEOF_PARAMS)(void);
typedef struct {
tAPTX_ENCODER_INIT init_func;
tAPTX_ENCODER_ENCODE_STEREO encode_stereo_func;
tAPTX_ENCODER_SIZEOF_PARAMS sizeof_params_func;
} tAPTX_API;
// Filled the |external_api| with the ptr to the codec api
// return true if the codec is loaded
// This is for test purpose and ensure we are testing the api in real life
// condition
bool A2DP_VendorCopyAptxApi(tAPTX_API& external_api);
#endif // A2DP_VENDOR_APTX_ENCODER_H
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