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1540 lines
55 KiB
1540 lines
55 KiB
/*
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* Copyright 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/******************************************************************************
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*
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* Utility functions to help build and parse the AAC Codec Information
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* Element and Media Payload.
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*
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******************************************************************************/
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#define LOG_TAG "a2dp_aac"
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#include "bt_target.h"
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#include "a2dp_aac.h"
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#include <string.h>
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#include <base/logging.h>
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#include "a2dp_aac_decoder.h"
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#include "a2dp_aac_encoder.h"
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#include "bt_utils.h"
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#include "osi/include/log.h"
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#include "osi/include/osi.h"
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#include "osi/include/properties.h"
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#define A2DP_AAC_DEFAULT_BITRATE 320000 // 320 kbps
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#define A2DP_AAC_MIN_BITRATE 64000 // 64 kbps
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// data type for the AAC Codec Information Element */
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// NOTE: bits_per_sample is needed only for AAC encoder initialization.
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typedef struct {
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uint8_t objectType; /* Object Type */
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uint16_t sampleRate; /* Sampling Frequency */
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uint8_t channelMode; /* STEREO/MONO */
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uint8_t variableBitRateSupport; /* Variable Bit Rate Support*/
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uint32_t bitRate; /* Bit rate */
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btav_a2dp_codec_bits_per_sample_t bits_per_sample;
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} tA2DP_AAC_CIE;
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static bool aac_source_caps_configured = false;
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static tA2DP_AAC_CIE a2dp_aac_source_caps = {};
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/* AAC Source codec capabilities */
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static const tA2DP_AAC_CIE a2dp_aac_cbr_source_caps = {
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// objectType
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A2DP_AAC_OBJECT_TYPE_MPEG2_LC,
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// sampleRate
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// TODO: AAC 48.0kHz sampling rate should be added back - see b/62301376
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A2DP_AAC_SAMPLING_FREQ_44100,
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// channelMode
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A2DP_AAC_CHANNEL_MODE_STEREO,
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// variableBitRateSupport
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A2DP_AAC_VARIABLE_BIT_RATE_DISABLED,
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// bitRate
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A2DP_AAC_DEFAULT_BITRATE,
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// bits_per_sample
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BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16};
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/* AAC Source codec capabilities */
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static const tA2DP_AAC_CIE a2dp_aac_vbr_source_caps = {
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// objectType
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A2DP_AAC_OBJECT_TYPE_MPEG2_LC,
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// sampleRate
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// TODO: AAC 48.0kHz sampling rate should be added back - see b/62301376
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A2DP_AAC_SAMPLING_FREQ_44100,
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// channelMode
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A2DP_AAC_CHANNEL_MODE_STEREO,
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// variableBitRateSupport
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A2DP_AAC_VARIABLE_BIT_RATE_ENABLED,
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// bitRate
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A2DP_AAC_DEFAULT_BITRATE,
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// bits_per_sample
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BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16};
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/* AAC Sink codec capabilities */
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static const tA2DP_AAC_CIE a2dp_aac_sink_caps = {
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// objectType
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A2DP_AAC_OBJECT_TYPE_MPEG2_LC,
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// sampleRate
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A2DP_AAC_SAMPLING_FREQ_44100 | A2DP_AAC_SAMPLING_FREQ_48000,
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// channelMode
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A2DP_AAC_CHANNEL_MODE_MONO | A2DP_AAC_CHANNEL_MODE_STEREO,
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// variableBitRateSupport
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A2DP_AAC_VARIABLE_BIT_RATE_ENABLED,
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// bitRate
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A2DP_AAC_DEFAULT_BITRATE,
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// bits_per_sample
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BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16};
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/* Default AAC codec configuration */
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static const tA2DP_AAC_CIE a2dp_aac_default_config = {
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A2DP_AAC_OBJECT_TYPE_MPEG2_LC, // objectType
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A2DP_AAC_SAMPLING_FREQ_44100, // sampleRate
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A2DP_AAC_CHANNEL_MODE_STEREO, // channelMode
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A2DP_AAC_VARIABLE_BIT_RATE_DISABLED, // variableBitRateSupport
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A2DP_AAC_DEFAULT_BITRATE, // bitRate
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BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16 // bits_per_sample
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};
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static const tA2DP_ENCODER_INTERFACE a2dp_encoder_interface_aac = {
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a2dp_aac_encoder_init,
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a2dp_aac_encoder_cleanup,
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a2dp_aac_feeding_reset,
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a2dp_aac_feeding_flush,
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a2dp_aac_get_encoder_interval_ms,
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a2dp_aac_send_frames,
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nullptr // set_transmit_queue_length
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};
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static const tA2DP_DECODER_INTERFACE a2dp_decoder_interface_aac = {
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a2dp_aac_decoder_init,
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a2dp_aac_decoder_cleanup,
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a2dp_aac_decoder_decode_packet,
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nullptr, // decoder_start
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nullptr, // decoder_suspend
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nullptr, // decoder_configure
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};
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UNUSED_ATTR static tA2DP_STATUS A2DP_CodecInfoMatchesCapabilityAac(
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const tA2DP_AAC_CIE* p_cap, const uint8_t* p_codec_info,
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bool is_capability);
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// Builds the AAC Media Codec Capabilities byte sequence beginning from the
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// LOSC octet. |media_type| is the media type |AVDT_MEDIA_TYPE_*|.
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// |p_ie| is a pointer to the AAC Codec Information Element information.
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// The result is stored in |p_result|. Returns A2DP_SUCCESS on success,
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// otherwise the corresponding A2DP error status code.
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static tA2DP_STATUS A2DP_BuildInfoAac(uint8_t media_type,
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const tA2DP_AAC_CIE* p_ie,
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uint8_t* p_result) {
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if (p_ie == NULL || p_result == NULL) {
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return A2DP_INVALID_PARAMS;
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}
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*p_result++ = A2DP_AAC_CODEC_LEN;
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*p_result++ = (media_type << 4);
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*p_result++ = A2DP_MEDIA_CT_AAC;
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// Object Type
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if (p_ie->objectType == 0) return A2DP_INVALID_PARAMS;
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*p_result++ = p_ie->objectType;
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// Sampling Frequency
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if (p_ie->sampleRate == 0) return A2DP_INVALID_PARAMS;
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*p_result++ = (uint8_t)(p_ie->sampleRate & A2DP_AAC_SAMPLING_FREQ_MASK0);
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*p_result = (uint8_t)((p_ie->sampleRate & A2DP_AAC_SAMPLING_FREQ_MASK1) >> 8);
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// Channel Mode
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if (p_ie->channelMode == 0) return A2DP_INVALID_PARAMS;
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*p_result++ |= (p_ie->channelMode & A2DP_AAC_CHANNEL_MODE_MASK);
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// Variable Bit Rate Support
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*p_result = (p_ie->variableBitRateSupport & A2DP_AAC_VARIABLE_BIT_RATE_MASK);
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// Bit Rate
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*p_result++ |= (uint8_t)((p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK0) >> 16);
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*p_result++ = (uint8_t)((p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK1) >> 8);
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*p_result++ = (uint8_t)(p_ie->bitRate & A2DP_AAC_BIT_RATE_MASK2);
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return A2DP_SUCCESS;
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}
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// Parses the AAC Media Codec Capabilities byte sequence beginning from the
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// LOSC octet. The result is stored in |p_ie|. The byte sequence to parse is
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// |p_codec_info|. If |is_capability| is true, the byte sequence is
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// codec capabilities, otherwise is codec configuration.
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// Returns A2DP_SUCCESS on success, otherwise the corresponding A2DP error
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// status code.
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static tA2DP_STATUS A2DP_ParseInfoAac(tA2DP_AAC_CIE* p_ie,
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const uint8_t* p_codec_info,
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bool is_capability) {
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uint8_t losc;
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uint8_t media_type;
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tA2DP_CODEC_TYPE codec_type;
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if (p_ie == NULL || p_codec_info == NULL) return A2DP_INVALID_PARAMS;
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// Check the codec capability length
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losc = *p_codec_info++;
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if (losc != A2DP_AAC_CODEC_LEN) return A2DP_WRONG_CODEC;
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media_type = (*p_codec_info++) >> 4;
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codec_type = *p_codec_info++;
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/* Check the Media Type and Media Codec Type */
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if (media_type != AVDT_MEDIA_TYPE_AUDIO || codec_type != A2DP_MEDIA_CT_AAC) {
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return A2DP_WRONG_CODEC;
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}
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p_ie->objectType = *p_codec_info++;
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p_ie->sampleRate = (*p_codec_info & A2DP_AAC_SAMPLING_FREQ_MASK0) |
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(*(p_codec_info + 1) << 8 & A2DP_AAC_SAMPLING_FREQ_MASK1);
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p_codec_info++;
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p_ie->channelMode = *p_codec_info & A2DP_AAC_CHANNEL_MODE_MASK;
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p_codec_info++;
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p_ie->variableBitRateSupport =
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*p_codec_info & A2DP_AAC_VARIABLE_BIT_RATE_MASK;
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p_ie->bitRate = ((*p_codec_info) << 16 & A2DP_AAC_BIT_RATE_MASK0) |
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(*(p_codec_info + 1) << 8 & A2DP_AAC_BIT_RATE_MASK1) |
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(*(p_codec_info + 2) & A2DP_AAC_BIT_RATE_MASK2);
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p_codec_info += 3;
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if (is_capability) {
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// NOTE: The checks here are very liberal. We should be using more
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// pedantic checks specific to the SRC or SNK as specified in the spec.
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if (A2DP_BitsSet(p_ie->objectType) == A2DP_SET_ZERO_BIT)
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return A2DP_BAD_OBJ_TYPE;
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if (A2DP_BitsSet(p_ie->sampleRate) == A2DP_SET_ZERO_BIT)
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return A2DP_BAD_SAMP_FREQ;
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if (A2DP_BitsSet(p_ie->channelMode) == A2DP_SET_ZERO_BIT)
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return A2DP_BAD_CH_MODE;
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return A2DP_SUCCESS;
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}
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if (A2DP_BitsSet(p_ie->objectType) != A2DP_SET_ONE_BIT)
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return A2DP_BAD_OBJ_TYPE;
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if (A2DP_BitsSet(p_ie->sampleRate) != A2DP_SET_ONE_BIT)
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return A2DP_BAD_SAMP_FREQ;
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if (A2DP_BitsSet(p_ie->channelMode) != A2DP_SET_ONE_BIT)
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return A2DP_BAD_CH_MODE;
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return A2DP_SUCCESS;
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}
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bool A2DP_IsSourceCodecValidAac(const uint8_t* p_codec_info) {
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tA2DP_AAC_CIE cfg_cie;
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/* Use a liberal check when parsing the codec info */
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return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) ||
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(A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS);
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}
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bool A2DP_IsSinkCodecValidAac(UNUSED_ATTR const uint8_t* p_codec_info) {
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tA2DP_AAC_CIE cfg_cie;
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/* Use a liberal check when parsing the codec info */
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return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) ||
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(A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS);
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}
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bool A2DP_IsPeerSourceCodecValidAac(UNUSED_ATTR const uint8_t* p_codec_info) {
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tA2DP_AAC_CIE cfg_cie;
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/* Use a liberal check when parsing the codec info */
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return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) ||
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(A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS);
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}
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bool A2DP_IsPeerSinkCodecValidAac(const uint8_t* p_codec_info) {
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tA2DP_AAC_CIE cfg_cie;
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/* Use a liberal check when parsing the codec info */
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return (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, false) == A2DP_SUCCESS) ||
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(A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) == A2DP_SUCCESS);
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}
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bool A2DP_IsSinkCodecSupportedAac(const uint8_t* p_codec_info) {
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return A2DP_CodecInfoMatchesCapabilityAac(&a2dp_aac_sink_caps, p_codec_info,
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false) == A2DP_SUCCESS;
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}
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bool A2DP_IsPeerSourceCodecSupportedAac(const uint8_t* p_codec_info) {
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return A2DP_CodecInfoMatchesCapabilityAac(&a2dp_aac_sink_caps, p_codec_info,
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true) == A2DP_SUCCESS;
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}
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// Checks whether A2DP AAC codec configuration matches with a device's codec
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// capabilities. |p_cap| is the AAC codec configuration. |p_codec_info| is
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// the device's codec capabilities. |is_capability| is true if
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// |p_codec_info| contains A2DP codec capability.
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// Returns A2DP_SUCCESS if the codec configuration matches with capabilities,
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// otherwise the corresponding A2DP error status code.
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static tA2DP_STATUS A2DP_CodecInfoMatchesCapabilityAac(
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const tA2DP_AAC_CIE* p_cap, const uint8_t* p_codec_info,
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bool is_capability) {
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tA2DP_STATUS status;
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tA2DP_AAC_CIE cfg_cie;
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/* parse configuration */
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status = A2DP_ParseInfoAac(&cfg_cie, p_codec_info, is_capability);
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if (status != A2DP_SUCCESS) {
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LOG_ERROR("%s: parsing failed %d", __func__, status);
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return status;
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}
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/* verify that each parameter is in range */
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LOG_VERBOSE("%s: Object Type peer: 0x%x, capability 0x%x", __func__,
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cfg_cie.objectType, p_cap->objectType);
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LOG_VERBOSE("%s: Sample Rate peer: %u, capability %u", __func__,
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cfg_cie.sampleRate, p_cap->sampleRate);
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LOG_VERBOSE("%s: Channel Mode peer: 0x%x, capability 0x%x", __func__,
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cfg_cie.channelMode, p_cap->channelMode);
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LOG_VERBOSE("%s: Variable Bit Rate Support peer: 0x%x, capability 0x%x",
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__func__, cfg_cie.variableBitRateSupport,
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p_cap->variableBitRateSupport);
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LOG_VERBOSE("%s: Bit Rate peer: %u, capability %u", __func__, cfg_cie.bitRate,
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p_cap->bitRate);
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/* Object Type */
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if ((cfg_cie.objectType & p_cap->objectType) == 0) return A2DP_BAD_OBJ_TYPE;
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/* Sample Rate */
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if ((cfg_cie.sampleRate & p_cap->sampleRate) == 0) return A2DP_BAD_SAMP_FREQ;
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/* Channel Mode */
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if ((cfg_cie.channelMode & p_cap->channelMode) == 0) return A2DP_NS_CH_MODE;
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return A2DP_SUCCESS;
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}
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bool A2DP_UsesRtpHeaderAac(UNUSED_ATTR bool content_protection_enabled,
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UNUSED_ATTR const uint8_t* p_codec_info) {
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return true;
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}
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const char* A2DP_CodecNameAac(UNUSED_ATTR const uint8_t* p_codec_info) {
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return "AAC";
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}
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bool A2DP_CodecTypeEqualsAac(const uint8_t* p_codec_info_a,
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const uint8_t* p_codec_info_b) {
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tA2DP_AAC_CIE aac_cie_a;
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tA2DP_AAC_CIE aac_cie_b;
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// Check whether the codec info contains valid data
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tA2DP_STATUS a2dp_status =
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A2DP_ParseInfoAac(&aac_cie_a, p_codec_info_a, true);
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if (a2dp_status != A2DP_SUCCESS) {
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LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
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return false;
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}
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a2dp_status = A2DP_ParseInfoAac(&aac_cie_b, p_codec_info_b, true);
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if (a2dp_status != A2DP_SUCCESS) {
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LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
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return false;
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}
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return true;
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}
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bool A2DP_CodecEqualsAac(const uint8_t* p_codec_info_a,
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const uint8_t* p_codec_info_b) {
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tA2DP_AAC_CIE aac_cie_a;
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tA2DP_AAC_CIE aac_cie_b;
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// Check whether the codec info contains valid data
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tA2DP_STATUS a2dp_status =
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A2DP_ParseInfoAac(&aac_cie_a, p_codec_info_a, true);
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if (a2dp_status != A2DP_SUCCESS) {
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LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
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return false;
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}
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a2dp_status = A2DP_ParseInfoAac(&aac_cie_b, p_codec_info_b, true);
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if (a2dp_status != A2DP_SUCCESS) {
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LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
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return false;
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}
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return (aac_cie_a.objectType == aac_cie_b.objectType) &&
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(aac_cie_a.sampleRate == aac_cie_b.sampleRate) &&
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(aac_cie_a.channelMode == aac_cie_b.channelMode) &&
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(aac_cie_a.variableBitRateSupport ==
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aac_cie_b.variableBitRateSupport) &&
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(aac_cie_a.bitRate == aac_cie_b.bitRate);
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}
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int A2DP_GetTrackSampleRateAac(const uint8_t* p_codec_info) {
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tA2DP_AAC_CIE aac_cie;
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// Check whether the codec info contains valid data
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tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
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if (a2dp_status != A2DP_SUCCESS) {
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LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
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return -1;
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}
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switch (aac_cie.sampleRate) {
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case A2DP_AAC_SAMPLING_FREQ_8000:
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return 8000;
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case A2DP_AAC_SAMPLING_FREQ_11025:
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return 11025;
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case A2DP_AAC_SAMPLING_FREQ_12000:
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return 12000;
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case A2DP_AAC_SAMPLING_FREQ_16000:
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return 16000;
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case A2DP_AAC_SAMPLING_FREQ_22050:
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return 22050;
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case A2DP_AAC_SAMPLING_FREQ_24000:
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return 24000;
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case A2DP_AAC_SAMPLING_FREQ_32000:
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return 32000;
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case A2DP_AAC_SAMPLING_FREQ_44100:
|
|
return 44100;
|
|
case A2DP_AAC_SAMPLING_FREQ_48000:
|
|
return 48000;
|
|
case A2DP_AAC_SAMPLING_FREQ_64000:
|
|
return 64000;
|
|
case A2DP_AAC_SAMPLING_FREQ_88200:
|
|
return 88200;
|
|
case A2DP_AAC_SAMPLING_FREQ_96000:
|
|
return 96000;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetTrackBitsPerSampleAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
// NOTE: The bits per sample never changes for AAC
|
|
return 16;
|
|
}
|
|
|
|
int A2DP_GetTrackChannelCountAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
switch (aac_cie.channelMode) {
|
|
case A2DP_AAC_CHANNEL_MODE_MONO:
|
|
return 1;
|
|
case A2DP_AAC_CHANNEL_MODE_STEREO:
|
|
return 2;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetSinkTrackChannelTypeAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
switch (aac_cie.channelMode) {
|
|
case A2DP_AAC_CHANNEL_MODE_MONO:
|
|
return 1;
|
|
case A2DP_AAC_CHANNEL_MODE_STEREO:
|
|
return 3;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetObjectTypeCodeAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
switch (aac_cie.objectType) {
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG2_LC:
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_LC:
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_LTP:
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_SCALABLE:
|
|
return aac_cie.objectType;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetChannelModeCodeAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
switch (aac_cie.channelMode) {
|
|
case A2DP_AAC_CHANNEL_MODE_MONO:
|
|
case A2DP_AAC_CHANNEL_MODE_STEREO:
|
|
return aac_cie.channelMode;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetVariableBitRateSupportAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
switch (aac_cie.variableBitRateSupport) {
|
|
case A2DP_AAC_VARIABLE_BIT_RATE_ENABLED:
|
|
case A2DP_AAC_VARIABLE_BIT_RATE_DISABLED:
|
|
return aac_cie.variableBitRateSupport;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int A2DP_GetBitRateAac(const uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
return aac_cie.bitRate;
|
|
}
|
|
|
|
int A2DP_ComputeMaxBitRateAac(const uint8_t* p_codec_info, uint16_t mtu) {
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
// Check whether the codec info contains valid data
|
|
tA2DP_STATUS a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, false);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: cannot decode codec information: %d", __func__, a2dp_status);
|
|
return -1;
|
|
}
|
|
|
|
int sampling_freq = A2DP_GetTrackSampleRateAac(p_codec_info);
|
|
if (sampling_freq == -1) return -1;
|
|
|
|
int pcm_channel_samples_per_frame = 0;
|
|
switch (aac_cie.objectType) {
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG2_LC:
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_LC:
|
|
pcm_channel_samples_per_frame = 1024;
|
|
break;
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_LTP:
|
|
case A2DP_AAC_OBJECT_TYPE_MPEG4_SCALABLE:
|
|
// TODO: The MPEG documentation doesn't specify the value.
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (pcm_channel_samples_per_frame == 0) return -1;
|
|
|
|
// See Section 3.2.1 Estimating Average Frame Size from
|
|
// the aacEncoder.pdf document included with the AAC source code.
|
|
return (8 * mtu * sampling_freq) / pcm_channel_samples_per_frame;
|
|
}
|
|
|
|
bool A2DP_GetPacketTimestampAac(const uint8_t* p_codec_info,
|
|
const uint8_t* p_data, uint32_t* p_timestamp) {
|
|
// TODO: Is this function really codec-specific?
|
|
*p_timestamp = *(const uint32_t*)p_data;
|
|
return true;
|
|
}
|
|
|
|
bool A2DP_BuildCodecHeaderAac(UNUSED_ATTR const uint8_t* p_codec_info,
|
|
UNUSED_ATTR BT_HDR* p_buf,
|
|
UNUSED_ATTR uint16_t frames_per_packet) {
|
|
return true;
|
|
}
|
|
|
|
std::string A2DP_CodecInfoStringAac(const uint8_t* p_codec_info) {
|
|
std::stringstream res;
|
|
std::string field;
|
|
tA2DP_STATUS a2dp_status;
|
|
tA2DP_AAC_CIE aac_cie;
|
|
|
|
a2dp_status = A2DP_ParseInfoAac(&aac_cie, p_codec_info, true);
|
|
if (a2dp_status != A2DP_SUCCESS) {
|
|
res << "A2DP_ParseInfoAac fail: " << loghex(a2dp_status);
|
|
return res.str();
|
|
}
|
|
|
|
res << "\tname: AAC\n";
|
|
|
|
// Object type
|
|
field.clear();
|
|
AppendField(&field, (aac_cie.objectType == 0), "NONE");
|
|
AppendField(&field, (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG2_LC),
|
|
"(MPEG-2 AAC LC)");
|
|
AppendField(&field, (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_LC),
|
|
"(MPEG-4 AAC LC)");
|
|
AppendField(&field, (aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_LTP),
|
|
"(MPEG-4 AAC LTP)");
|
|
AppendField(&field,
|
|
(aac_cie.objectType & A2DP_AAC_OBJECT_TYPE_MPEG4_SCALABLE),
|
|
"(MPEG-4 AAC Scalable)");
|
|
res << "\tobjectType: " << field << " (" << loghex(aac_cie.objectType)
|
|
<< ")\n";
|
|
|
|
// Sample frequency
|
|
field.clear();
|
|
AppendField(&field, (aac_cie.sampleRate == 0), "NONE");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_8000),
|
|
"8000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_11025),
|
|
"11025");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_12000),
|
|
"12000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_16000),
|
|
"16000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_22050),
|
|
"22050");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_24000),
|
|
"24000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_32000),
|
|
"32000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100),
|
|
"44100");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000),
|
|
"48000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_64000),
|
|
"64000");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200),
|
|
"88200");
|
|
AppendField(&field, (aac_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000),
|
|
"96000");
|
|
res << "\tsamp_freq: " << field << " (" << loghex(aac_cie.sampleRate)
|
|
<< ")\n";
|
|
|
|
// Channel mode
|
|
field.clear();
|
|
AppendField(&field, (aac_cie.channelMode == 0), "NONE");
|
|
AppendField(&field, (aac_cie.channelMode == A2DP_AAC_CHANNEL_MODE_MONO),
|
|
"Mono");
|
|
AppendField(&field, (aac_cie.channelMode == A2DP_AAC_CHANNEL_MODE_STEREO),
|
|
"Stereo");
|
|
res << "\tch_mode: " << field << " (" << loghex(aac_cie.channelMode) << ")\n";
|
|
|
|
// Variable bit rate support
|
|
res << "\tvariableBitRateSupport: " << std::boolalpha
|
|
<< (aac_cie.variableBitRateSupport != 0) << "\n";
|
|
|
|
// Bit rate
|
|
res << "\tbitRate: " << std::to_string(aac_cie.bitRate) << "\n";
|
|
|
|
return res.str();
|
|
}
|
|
|
|
const tA2DP_ENCODER_INTERFACE* A2DP_GetEncoderInterfaceAac(
|
|
const uint8_t* p_codec_info) {
|
|
if (!A2DP_IsSourceCodecValidAac(p_codec_info)) return NULL;
|
|
|
|
return &a2dp_encoder_interface_aac;
|
|
}
|
|
|
|
const tA2DP_DECODER_INTERFACE* A2DP_GetDecoderInterfaceAac(
|
|
const uint8_t* p_codec_info) {
|
|
if (!A2DP_IsSinkCodecValidAac(p_codec_info)) return NULL;
|
|
|
|
return &a2dp_decoder_interface_aac;
|
|
}
|
|
|
|
bool A2DP_AdjustCodecAac(uint8_t* p_codec_info) {
|
|
tA2DP_AAC_CIE cfg_cie;
|
|
|
|
// Nothing to do: just verify the codec info is valid
|
|
if (A2DP_ParseInfoAac(&cfg_cie, p_codec_info, true) != A2DP_SUCCESS)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
btav_a2dp_codec_index_t A2DP_SourceCodecIndexAac(
|
|
UNUSED_ATTR const uint8_t* p_codec_info) {
|
|
return BTAV_A2DP_CODEC_INDEX_SOURCE_AAC;
|
|
}
|
|
|
|
btav_a2dp_codec_index_t A2DP_SinkCodecIndexAac(
|
|
UNUSED_ATTR const uint8_t* p_codec_info) {
|
|
return BTAV_A2DP_CODEC_INDEX_SINK_AAC;
|
|
}
|
|
|
|
const char* A2DP_CodecIndexStrAac(void) { return "AAC"; }
|
|
|
|
const char* A2DP_CodecIndexStrAacSink(void) { return "AAC SINK"; }
|
|
|
|
void aac_source_caps_initialize() {
|
|
if (aac_source_caps_configured) {
|
|
return;
|
|
}
|
|
a2dp_aac_source_caps =
|
|
osi_property_get_bool("persist.bluetooth.a2dp_aac.vbr_supported", false)
|
|
? a2dp_aac_vbr_source_caps
|
|
: a2dp_aac_cbr_source_caps;
|
|
aac_source_caps_configured = true;
|
|
}
|
|
|
|
bool A2DP_InitCodecConfigAac(AvdtpSepConfig* p_cfg) {
|
|
aac_source_caps_initialize();
|
|
if (A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &a2dp_aac_source_caps,
|
|
p_cfg->codec_info) != A2DP_SUCCESS) {
|
|
return false;
|
|
}
|
|
|
|
#if (BTA_AV_CO_CP_SCMS_T == TRUE)
|
|
/* Content protection info - support SCMS-T */
|
|
uint8_t* p = p_cfg->protect_info;
|
|
*p++ = AVDT_CP_LOSC;
|
|
UINT16_TO_STREAM(p, AVDT_CP_SCMS_T_ID);
|
|
p_cfg->num_protect = 1;
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
bool A2DP_InitCodecConfigAacSink(AvdtpSepConfig* p_cfg) {
|
|
return A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &a2dp_aac_sink_caps,
|
|
p_cfg->codec_info) == A2DP_SUCCESS;
|
|
}
|
|
|
|
UNUSED_ATTR static void build_codec_config(const tA2DP_AAC_CIE& config_cie,
|
|
btav_a2dp_codec_config_t* result) {
|
|
if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100)
|
|
result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000)
|
|
result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200)
|
|
result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
if (config_cie.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000)
|
|
result->sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
|
|
result->bits_per_sample = config_cie.bits_per_sample;
|
|
|
|
if (config_cie.channelMode & A2DP_AAC_CHANNEL_MODE_MONO)
|
|
result->channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
if (config_cie.channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
result->channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
}
|
|
}
|
|
|
|
A2dpCodecConfigAacSource::A2dpCodecConfigAacSource(
|
|
btav_a2dp_codec_priority_t codec_priority)
|
|
: A2dpCodecConfigAacBase(BTAV_A2DP_CODEC_INDEX_SOURCE_AAC,
|
|
A2DP_CodecIndexStrAac(), codec_priority, true) {
|
|
aac_source_caps_initialize();
|
|
// Compute the local capability
|
|
if (a2dp_aac_source_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
}
|
|
if (a2dp_aac_source_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
}
|
|
if (a2dp_aac_source_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
}
|
|
if (a2dp_aac_source_caps.sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
codec_local_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
}
|
|
codec_local_capability_.bits_per_sample =
|
|
a2dp_aac_source_caps.bits_per_sample;
|
|
if (a2dp_aac_source_caps.channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
codec_local_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
}
|
|
if (a2dp_aac_source_caps.channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
codec_local_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
}
|
|
}
|
|
|
|
A2dpCodecConfigAacSource::~A2dpCodecConfigAacSource() {}
|
|
|
|
bool A2dpCodecConfigAacSource::init() {
|
|
if (!isValid()) return false;
|
|
|
|
// Load the encoder
|
|
if (!A2DP_LoadEncoderAac()) {
|
|
LOG_ERROR("%s: cannot load the encoder", __func__);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool A2dpCodecConfigAacSource::useRtpHeaderMarkerBit() const { return true; }
|
|
|
|
//
|
|
// Selects the best sample rate from |sampleRate|.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_best_sample_rate(uint16_t sampleRate,
|
|
tA2DP_AAC_CIE* p_result,
|
|
btav_a2dp_codec_config_t* p_codec_config) {
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_96000;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
return true;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_88200;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
return true;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_48000;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
return true;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_44100;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Selects the audio sample rate from |p_codec_audio_config|.
|
|
// |sampleRate| contains the capability.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_audio_sample_rate(
|
|
const btav_a2dp_codec_config_t* p_codec_audio_config, uint16_t sampleRate,
|
|
tA2DP_AAC_CIE* p_result, btav_a2dp_codec_config_t* p_codec_config) {
|
|
switch (p_codec_audio_config->sample_rate) {
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_44100:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_44100;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_48000:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_48000;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_88200:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_88200;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_96000:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
p_result->sampleRate = A2DP_AAC_SAMPLING_FREQ_96000;
|
|
p_codec_config->sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_176400:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_192000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_16000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_24000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_NONE:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Selects the best bits per sample from |bits_per_sample|.
|
|
// |bits_per_sample| contains the capability.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_best_bits_per_sample(
|
|
btav_a2dp_codec_bits_per_sample_t bits_per_sample, tA2DP_AAC_CIE* p_result,
|
|
btav_a2dp_codec_config_t* p_codec_config) {
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32;
|
|
return true;
|
|
}
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24;
|
|
return true;
|
|
}
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Selects the audio bits per sample from |p_codec_audio_config|.
|
|
// |bits_per_sample| contains the capability.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_audio_bits_per_sample(
|
|
const btav_a2dp_codec_config_t* p_codec_audio_config,
|
|
btav_a2dp_codec_bits_per_sample_t bits_per_sample, tA2DP_AAC_CIE* p_result,
|
|
btav_a2dp_codec_config_t* p_codec_config) {
|
|
switch (p_codec_audio_config->bits_per_sample) {
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) {
|
|
p_codec_config->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32;
|
|
p_result->bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Selects the best channel mode from |channelMode|.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_best_channel_mode(uint8_t channelMode,
|
|
tA2DP_AAC_CIE* p_result,
|
|
btav_a2dp_codec_config_t* p_codec_config) {
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
p_result->channelMode = A2DP_AAC_CHANNEL_MODE_STEREO;
|
|
p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
return true;
|
|
}
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
p_result->channelMode = A2DP_AAC_CHANNEL_MODE_MONO;
|
|
p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//
|
|
// Selects the audio channel mode from |p_codec_audio_config|.
|
|
// |channelMode| contains the capability.
|
|
// The result is stored in |p_result| and |p_codec_config|.
|
|
// Returns true if a selection was made, otherwise false.
|
|
//
|
|
static bool select_audio_channel_mode(
|
|
const btav_a2dp_codec_config_t* p_codec_audio_config, uint8_t channelMode,
|
|
tA2DP_AAC_CIE* p_result, btav_a2dp_codec_config_t* p_codec_config) {
|
|
switch (p_codec_audio_config->channel_mode) {
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_MONO:
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
p_result->channelMode = A2DP_AAC_CHANNEL_MODE_MONO;
|
|
p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO:
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
p_result->channelMode = A2DP_AAC_CHANNEL_MODE_STEREO;
|
|
p_codec_config->channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
return true;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_NONE:
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool A2dpCodecConfigAacBase::setCodecConfig(const uint8_t* p_peer_codec_info,
|
|
bool is_capability,
|
|
uint8_t* p_result_codec_config) {
|
|
std::lock_guard<std::recursive_mutex> lock(codec_mutex_);
|
|
tA2DP_AAC_CIE peer_info_cie;
|
|
tA2DP_AAC_CIE result_config_cie;
|
|
uint8_t channelMode;
|
|
uint16_t sampleRate;
|
|
btav_a2dp_codec_bits_per_sample_t bits_per_sample;
|
|
const tA2DP_AAC_CIE* p_a2dp_aac_caps =
|
|
(is_source_) ? &a2dp_aac_source_caps : &a2dp_aac_sink_caps;
|
|
|
|
// Save the internal state
|
|
btav_a2dp_codec_config_t saved_codec_config = codec_config_;
|
|
btav_a2dp_codec_config_t saved_codec_capability = codec_capability_;
|
|
btav_a2dp_codec_config_t saved_codec_selectable_capability =
|
|
codec_selectable_capability_;
|
|
btav_a2dp_codec_config_t saved_codec_user_config = codec_user_config_;
|
|
btav_a2dp_codec_config_t saved_codec_audio_config = codec_audio_config_;
|
|
uint8_t saved_ota_codec_config[AVDT_CODEC_SIZE];
|
|
uint8_t saved_ota_codec_peer_capability[AVDT_CODEC_SIZE];
|
|
uint8_t saved_ota_codec_peer_config[AVDT_CODEC_SIZE];
|
|
memcpy(saved_ota_codec_config, ota_codec_config_, sizeof(ota_codec_config_));
|
|
memcpy(saved_ota_codec_peer_capability, ota_codec_peer_capability_,
|
|
sizeof(ota_codec_peer_capability_));
|
|
memcpy(saved_ota_codec_peer_config, ota_codec_peer_config_,
|
|
sizeof(ota_codec_peer_config_));
|
|
|
|
tA2DP_STATUS status =
|
|
A2DP_ParseInfoAac(&peer_info_cie, p_peer_codec_info, is_capability);
|
|
if (status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: can't parse peer's capabilities: error = %d", __func__,
|
|
status);
|
|
goto fail;
|
|
}
|
|
|
|
//
|
|
// Build the preferred configuration
|
|
//
|
|
memset(&result_config_cie, 0, sizeof(result_config_cie));
|
|
|
|
// NOTE: Always assign the Object Type and Variable Bit Rate Support.
|
|
result_config_cie.objectType = p_a2dp_aac_caps->objectType;
|
|
// The Variable Bit Rate Support is disabled if either side disables it
|
|
result_config_cie.variableBitRateSupport =
|
|
p_a2dp_aac_caps->variableBitRateSupport &
|
|
peer_info_cie.variableBitRateSupport;
|
|
if (result_config_cie.variableBitRateSupport !=
|
|
A2DP_AAC_VARIABLE_BIT_RATE_DISABLED) {
|
|
codec_config_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_VBR_5);
|
|
} else {
|
|
codec_config_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_CBR);
|
|
}
|
|
|
|
// Set the bit rate as follows:
|
|
// 1. If the remote device reports a bogus bit rate
|
|
// (bitRate < A2DP_AAC_MIN_BITRATE), then use the bit rate from our
|
|
// configuration. Examples of observed bogus bit rates are zero
|
|
// and 24576.
|
|
// 2. If the remote device reports valid bit rate
|
|
// (bitRate >= A2DP_AAC_MIN_BITRATE), then use the smaller
|
|
// of the remote device's bit rate and the bit rate from our configuration.
|
|
// In either case, the actual streaming bit rate will also consider the MTU.
|
|
if (peer_info_cie.bitRate < A2DP_AAC_MIN_BITRATE) {
|
|
// Bogus bit rate
|
|
result_config_cie.bitRate = p_a2dp_aac_caps->bitRate;
|
|
} else {
|
|
result_config_cie.bitRate =
|
|
std::min(p_a2dp_aac_caps->bitRate, peer_info_cie.bitRate);
|
|
}
|
|
|
|
//
|
|
// Select the sample frequency
|
|
//
|
|
sampleRate = p_a2dp_aac_caps->sampleRate & peer_info_cie.sampleRate;
|
|
codec_config_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE;
|
|
switch (codec_user_config_.sample_rate) {
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_44100:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_44100;
|
|
codec_capability_.sample_rate = codec_user_config_.sample_rate;
|
|
codec_config_.sample_rate = codec_user_config_.sample_rate;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_48000:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_48000;
|
|
codec_capability_.sample_rate = codec_user_config_.sample_rate;
|
|
codec_config_.sample_rate = codec_user_config_.sample_rate;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_88200:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_88200;
|
|
codec_capability_.sample_rate = codec_user_config_.sample_rate;
|
|
codec_config_.sample_rate = codec_user_config_.sample_rate;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_96000:
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
result_config_cie.sampleRate = A2DP_AAC_SAMPLING_FREQ_96000;
|
|
codec_capability_.sample_rate = codec_user_config_.sample_rate;
|
|
codec_config_.sample_rate = codec_user_config_.sample_rate;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_176400:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_192000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_16000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_24000:
|
|
case BTAV_A2DP_CODEC_SAMPLE_RATE_NONE:
|
|
codec_capability_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE;
|
|
codec_config_.sample_rate = BTAV_A2DP_CODEC_SAMPLE_RATE_NONE;
|
|
break;
|
|
}
|
|
|
|
// Select the sample frequency if there is no user preference
|
|
do {
|
|
// Compute the selectable capability
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
}
|
|
|
|
if (codec_config_.sample_rate != BTAV_A2DP_CODEC_SAMPLE_RATE_NONE) break;
|
|
|
|
// Compute the common capability
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100)
|
|
codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000)
|
|
codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200)
|
|
codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000)
|
|
codec_capability_.sample_rate |= BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
|
|
// No user preference - try the codec audio config
|
|
if (select_audio_sample_rate(&codec_audio_config_, sampleRate,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - try the default config
|
|
if (select_best_sample_rate(
|
|
a2dp_aac_default_config.sampleRate & peer_info_cie.sampleRate,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - use the best match
|
|
if (select_best_sample_rate(sampleRate, &result_config_cie,
|
|
&codec_config_)) {
|
|
break;
|
|
}
|
|
} while (false);
|
|
if (codec_config_.sample_rate == BTAV_A2DP_CODEC_SAMPLE_RATE_NONE) {
|
|
LOG_ERROR(
|
|
"%s: cannot match sample frequency: source caps = 0x%x "
|
|
"peer info = 0x%x",
|
|
__func__, p_a2dp_aac_caps->sampleRate, peer_info_cie.sampleRate);
|
|
goto fail;
|
|
}
|
|
|
|
//
|
|
// Select the bits per sample
|
|
//
|
|
// NOTE: this information is NOT included in the AAC A2DP codec description
|
|
// that is sent OTA.
|
|
bits_per_sample = p_a2dp_aac_caps->bits_per_sample;
|
|
codec_config_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE;
|
|
switch (codec_user_config_.bits_per_sample) {
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_16) {
|
|
result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_config_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_24) {
|
|
result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_config_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32:
|
|
if (bits_per_sample & BTAV_A2DP_CODEC_BITS_PER_SAMPLE_32) {
|
|
result_config_cie.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_capability_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
codec_config_.bits_per_sample = codec_user_config_.bits_per_sample;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE:
|
|
result_config_cie.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE;
|
|
codec_capability_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE;
|
|
codec_config_.bits_per_sample = BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE;
|
|
break;
|
|
}
|
|
|
|
// Select the bits per sample if there is no user preference
|
|
do {
|
|
// Compute the selectable capability
|
|
codec_selectable_capability_.bits_per_sample =
|
|
p_a2dp_aac_caps->bits_per_sample;
|
|
|
|
if (codec_config_.bits_per_sample != BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE)
|
|
break;
|
|
|
|
// Compute the common capability
|
|
codec_capability_.bits_per_sample = bits_per_sample;
|
|
|
|
// No user preference - the the codec audio config
|
|
if (select_audio_bits_per_sample(&codec_audio_config_,
|
|
p_a2dp_aac_caps->bits_per_sample,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - try the default config
|
|
if (select_best_bits_per_sample(a2dp_aac_default_config.bits_per_sample,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - use the best match
|
|
if (select_best_bits_per_sample(p_a2dp_aac_caps->bits_per_sample,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
} while (false);
|
|
if (codec_config_.bits_per_sample == BTAV_A2DP_CODEC_BITS_PER_SAMPLE_NONE) {
|
|
LOG_ERROR(
|
|
"%s: cannot match bits per sample: default = 0x%x "
|
|
"user preference = 0x%x",
|
|
__func__, a2dp_aac_default_config.bits_per_sample,
|
|
codec_user_config_.bits_per_sample);
|
|
goto fail;
|
|
}
|
|
|
|
//
|
|
// Select the channel mode
|
|
//
|
|
channelMode = p_a2dp_aac_caps->channelMode & peer_info_cie.channelMode;
|
|
codec_config_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE;
|
|
switch (codec_user_config_.channel_mode) {
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_MONO:
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
result_config_cie.channelMode = A2DP_AAC_CHANNEL_MODE_MONO;
|
|
codec_capability_.channel_mode = codec_user_config_.channel_mode;
|
|
codec_config_.channel_mode = codec_user_config_.channel_mode;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO:
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
result_config_cie.channelMode = A2DP_AAC_CHANNEL_MODE_STEREO;
|
|
codec_capability_.channel_mode = codec_user_config_.channel_mode;
|
|
codec_config_.channel_mode = codec_user_config_.channel_mode;
|
|
}
|
|
break;
|
|
case BTAV_A2DP_CODEC_CHANNEL_MODE_NONE:
|
|
codec_capability_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE;
|
|
codec_config_.channel_mode = BTAV_A2DP_CODEC_CHANNEL_MODE_NONE;
|
|
break;
|
|
}
|
|
|
|
// Select the channel mode if there is no user preference
|
|
do {
|
|
// Compute the selectable capability
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
codec_selectable_capability_.channel_mode |=
|
|
BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
}
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
codec_selectable_capability_.channel_mode |=
|
|
BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
}
|
|
|
|
if (codec_config_.channel_mode != BTAV_A2DP_CODEC_CHANNEL_MODE_NONE) break;
|
|
|
|
// Compute the common capability
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO)
|
|
codec_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
codec_capability_.channel_mode |= BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
}
|
|
|
|
// No user preference - try the codec audio config
|
|
if (select_audio_channel_mode(&codec_audio_config_, channelMode,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - try the default config
|
|
if (select_best_channel_mode(
|
|
a2dp_aac_default_config.channelMode & peer_info_cie.channelMode,
|
|
&result_config_cie, &codec_config_)) {
|
|
break;
|
|
}
|
|
|
|
// No user preference - use the best match
|
|
if (select_best_channel_mode(channelMode, &result_config_cie,
|
|
&codec_config_)) {
|
|
break;
|
|
}
|
|
} while (false);
|
|
if (codec_config_.channel_mode == BTAV_A2DP_CODEC_CHANNEL_MODE_NONE) {
|
|
LOG_ERROR(
|
|
"%s: cannot match channel mode: source caps = 0x%x "
|
|
"peer info = 0x%x",
|
|
__func__, p_a2dp_aac_caps->channelMode, peer_info_cie.channelMode);
|
|
goto fail;
|
|
}
|
|
|
|
//
|
|
// Copy the codec-specific fields if they are not zero
|
|
//
|
|
if (codec_user_config_.codec_specific_1 != 0) {
|
|
if (result_config_cie.variableBitRateSupport !=
|
|
A2DP_AAC_VARIABLE_BIT_RATE_DISABLED) {
|
|
auto user_bitrate_mode = codec_user_config_.codec_specific_1;
|
|
switch (static_cast<AacEncoderBitrateMode>(user_bitrate_mode)) {
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_C:
|
|
// VBR is supported, and is disabled by the user preference
|
|
result_config_cie.variableBitRateSupport =
|
|
A2DP_AAC_VARIABLE_BIT_RATE_DISABLED;
|
|
[[fallthrough]];
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_1:
|
|
[[fallthrough]];
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_2:
|
|
[[fallthrough]];
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_3:
|
|
[[fallthrough]];
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_4:
|
|
[[fallthrough]];
|
|
case AacEncoderBitrateMode::AACENC_BR_MODE_VBR_5:
|
|
codec_config_.codec_specific_1 = codec_user_config_.codec_specific_1;
|
|
break;
|
|
default:
|
|
codec_config_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_VBR_5);
|
|
}
|
|
} else {
|
|
// It is no needed to check the user preference when Variable Bitrate
|
|
// unsupported by one of source or sink
|
|
codec_config_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_CBR);
|
|
}
|
|
}
|
|
if (codec_user_config_.codec_specific_2 != 0)
|
|
codec_config_.codec_specific_2 = codec_user_config_.codec_specific_2;
|
|
if (codec_user_config_.codec_specific_3 != 0)
|
|
codec_config_.codec_specific_3 = codec_user_config_.codec_specific_3;
|
|
if (codec_user_config_.codec_specific_4 != 0)
|
|
codec_config_.codec_specific_4 = codec_user_config_.codec_specific_4;
|
|
|
|
if (A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &result_config_cie,
|
|
p_result_codec_config) != A2DP_SUCCESS) {
|
|
goto fail;
|
|
}
|
|
|
|
// Create a local copy of the peer codec capability/config, and the
|
|
// result codec config.
|
|
if (is_capability) {
|
|
status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &peer_info_cie,
|
|
ota_codec_peer_capability_);
|
|
} else {
|
|
status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &peer_info_cie,
|
|
ota_codec_peer_config_);
|
|
}
|
|
CHECK(status == A2DP_SUCCESS);
|
|
status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &result_config_cie,
|
|
ota_codec_config_);
|
|
CHECK(status == A2DP_SUCCESS);
|
|
return true;
|
|
|
|
fail:
|
|
// Restore the internal state
|
|
codec_config_ = saved_codec_config;
|
|
codec_capability_ = saved_codec_capability;
|
|
codec_selectable_capability_ = saved_codec_selectable_capability;
|
|
codec_user_config_ = saved_codec_user_config;
|
|
codec_audio_config_ = saved_codec_audio_config;
|
|
memcpy(ota_codec_config_, saved_ota_codec_config, sizeof(ota_codec_config_));
|
|
memcpy(ota_codec_peer_capability_, saved_ota_codec_peer_capability,
|
|
sizeof(ota_codec_peer_capability_));
|
|
memcpy(ota_codec_peer_config_, saved_ota_codec_peer_config,
|
|
sizeof(ota_codec_peer_config_));
|
|
return false;
|
|
}
|
|
|
|
bool A2dpCodecConfigAacBase::setPeerCodecCapabilities(
|
|
const uint8_t* p_peer_codec_capabilities) {
|
|
std::lock_guard<std::recursive_mutex> lock(codec_mutex_);
|
|
tA2DP_AAC_CIE peer_info_cie;
|
|
uint8_t channelMode;
|
|
uint16_t sampleRate;
|
|
uint8_t variableBitRateSupport;
|
|
const tA2DP_AAC_CIE* p_a2dp_aac_caps =
|
|
(is_source_) ? &a2dp_aac_source_caps : &a2dp_aac_sink_caps;
|
|
|
|
// Save the internal state
|
|
btav_a2dp_codec_config_t saved_codec_selectable_capability =
|
|
codec_selectable_capability_;
|
|
uint8_t saved_ota_codec_peer_capability[AVDT_CODEC_SIZE];
|
|
memcpy(saved_ota_codec_peer_capability, ota_codec_peer_capability_,
|
|
sizeof(ota_codec_peer_capability_));
|
|
|
|
tA2DP_STATUS status =
|
|
A2DP_ParseInfoAac(&peer_info_cie, p_peer_codec_capabilities, true);
|
|
if (status != A2DP_SUCCESS) {
|
|
LOG_ERROR("%s: can't parse peer's capabilities: error = %d", __func__,
|
|
status);
|
|
goto fail;
|
|
}
|
|
|
|
// Compute the selectable capability - sample rate
|
|
sampleRate = p_a2dp_aac_caps->sampleRate & peer_info_cie.sampleRate;
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_44100) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_44100;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_48000) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_48000;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_88200) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_88200;
|
|
}
|
|
if (sampleRate & A2DP_AAC_SAMPLING_FREQ_96000) {
|
|
codec_selectable_capability_.sample_rate |=
|
|
BTAV_A2DP_CODEC_SAMPLE_RATE_96000;
|
|
}
|
|
|
|
// Compute the selectable capability - bits per sample
|
|
codec_selectable_capability_.bits_per_sample =
|
|
p_a2dp_aac_caps->bits_per_sample;
|
|
|
|
// Compute the selectable capability - channel mode
|
|
channelMode = p_a2dp_aac_caps->channelMode & peer_info_cie.channelMode;
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_MONO) {
|
|
codec_selectable_capability_.channel_mode |=
|
|
BTAV_A2DP_CODEC_CHANNEL_MODE_MONO;
|
|
}
|
|
if (channelMode & A2DP_AAC_CHANNEL_MODE_STEREO) {
|
|
codec_selectable_capability_.channel_mode |=
|
|
BTAV_A2DP_CODEC_CHANNEL_MODE_STEREO;
|
|
}
|
|
|
|
// Compute the selectable capability - variable bitrate mode
|
|
variableBitRateSupport = p_a2dp_aac_caps->variableBitRateSupport &
|
|
peer_info_cie.variableBitRateSupport;
|
|
if (variableBitRateSupport != A2DP_AAC_VARIABLE_BIT_RATE_DISABLED) {
|
|
codec_selectable_capability_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_VBR_5);
|
|
} else {
|
|
codec_selectable_capability_.codec_specific_1 =
|
|
static_cast<int64_t>(AacEncoderBitrateMode::AACENC_BR_MODE_CBR);
|
|
}
|
|
|
|
status = A2DP_BuildInfoAac(AVDT_MEDIA_TYPE_AUDIO, &peer_info_cie,
|
|
ota_codec_peer_capability_);
|
|
CHECK(status == A2DP_SUCCESS);
|
|
return true;
|
|
|
|
fail:
|
|
// Restore the internal state
|
|
codec_selectable_capability_ = saved_codec_selectable_capability;
|
|
memcpy(ota_codec_peer_capability_, saved_ota_codec_peer_capability,
|
|
sizeof(ota_codec_peer_capability_));
|
|
return false;
|
|
}
|
|
|
|
A2dpCodecConfigAacSink::A2dpCodecConfigAacSink(
|
|
btav_a2dp_codec_priority_t codec_priority)
|
|
: A2dpCodecConfigAacBase(BTAV_A2DP_CODEC_INDEX_SINK_AAC,
|
|
A2DP_CodecIndexStrAacSink(), codec_priority,
|
|
false) {}
|
|
|
|
A2dpCodecConfigAacSink::~A2dpCodecConfigAacSink() {}
|
|
|
|
bool A2dpCodecConfigAacSink::init() {
|
|
if (!isValid()) return false;
|
|
|
|
// Load the decoder
|
|
if (!A2DP_LoadDecoderAac()) {
|
|
LOG_ERROR("%s: cannot load the decoder", __func__);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
uint64_t A2dpCodecConfigAacSink::encoderIntervalMs() const {
|
|
// TODO: This method applies only to Source codecs
|
|
return 0;
|
|
}
|
|
|
|
int A2dpCodecConfigAacSink::getEffectiveMtu() const {
|
|
// TODO: This method applies only to Source codecs
|
|
return 0;
|
|
}
|
|
|
|
bool A2dpCodecConfigAacSink::useRtpHeaderMarkerBit() const {
|
|
// TODO: This method applies only to Source codecs
|
|
return false;
|
|
}
|
|
|
|
bool A2dpCodecConfigAacSink::updateEncoderUserConfig(
|
|
UNUSED_ATTR const tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params,
|
|
UNUSED_ATTR bool* p_restart_input, UNUSED_ATTR bool* p_restart_output,
|
|
UNUSED_ATTR bool* p_config_updated) {
|
|
// TODO: This method applies only to Source codecs
|
|
return false;
|
|
}
|