Google Git
Sign in
android / platform / packages / modules / Bluetooth / 82fc8edc52 / . / system / btif / co / bta_av_co.cc
blob: 21842eb6e6321d1e7a85ad2007f9bebf11dc3f61 [file] [log] [blame]
/******************************************************************************
*
* Copyright 2004-2012 Broadcom Corporation
*
* 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.
*
******************************************************************************/
/******************************************************************************
*
* This is the advanced audio/video call-out function implementation for
* BTIF.
*
******************************************************************************/
#include <mutex>
#include <base/bind.h>
#include <base/logging.h>
#include <string.h>
#include "bt_target.h"
#include "a2dp_api.h"
#include "a2dp_sbc.h"
#include "bta_av_api.h"
#include "bta_av_ci.h"
#include "bta_av_co.h"
#include "bta_sys.h"
#include "btif_av.h"
#include "btif_av_co.h"
#include "btif_util.h"
#include "osi/include/osi.h"
// Macro to retrieve the number of elements in a statically allocated array
#define BTA_AV_CO_NUM_ELEMENTS(__a) (sizeof(__a) / sizeof((__a)[0]))
// Macro to convert BTA AV audio handle to index and vice versa
#define BTA_AV_CO_AUDIO_HANDLE_TO_INDEX(bta_av_handle) \
(((bta_av_handle) & (~BTA_AV_CHNL_MSK)) - 1)
#define BTA_AV_CO_AUDIO_INDEX_TO_HANDLE(index) \
(((index) + 1) | BTA_AV_CHNL_AUDIO)
class BtaAvCoSep {
public:
BtaAvCoSep()
: sep_info_idx(0), seid(0), codec_caps{}, num_protect(0), protect_info{} {
Reset();
}
/**
* Reset the state.
*/
void Reset() {
sep_info_idx = 0;
seid = 0;
memset(codec_caps, 0, sizeof(codec_caps));
num_protect = 0;
memset(protect_info, 0, sizeof(protect_info));
}
uint8_t sep_info_idx; // Local SEP index (in BTA tables)
uint8_t seid; // Peer SEP index (in peer tables)
uint8_t codec_caps[AVDT_CODEC_SIZE]; // Peer SEP codec capabilities
uint8_t num_protect; // Peer SEP number of CP elements
uint8_t protect_info[AVDT_CP_INFO_LEN]; // Peer SEP content protection info
};
class BtaAvCoPeer {
public:
BtaAvCoPeer()
: addr(RawAddress::kEmpty),
num_sinks(0),
num_sources(0),
num_seps(0),
num_rx_sinks(0),
num_rx_sources(0),
num_sup_sinks(0),
num_sup_sources(0),
p_sink(nullptr),
p_source(nullptr),
codec_config{},
acceptor(false),
reconfig_needed(false),
opened(false),
mtu(0),
uuid_to_connect(0),
bta_av_handle_(0),
codecs_(nullptr),
content_protect_active_(false) {
Reset(0);
}
/**
* Initialize the state.
*
* @param codec_priorities the codec priorities to use for the initialization
*/
void Init(const std::vector<btav_a2dp_codec_config_t>& codec_priorities);
/**
* Reset the state.
*
* @param bta_av_handle the BTA AV handle to use
*/
void Reset(tBTA_AV_HNDL bta_av_handle);
/**
* Get the BTA AV handle.
*
* @return the BTA AV handle
*/
tBTA_AV_HNDL BtaAvHandle() const { return bta_av_handle_; }
/**
* Get the A2DP codecs.
*
* @return the A2DP codecs
*/
A2dpCodecs* GetCodecs() { return codecs_; }
bool ContentProtectActive() const { return content_protect_active_; }
void SetContentProtectActive(bool cp_active) {
content_protect_active_ = cp_active;
}
RawAddress addr; // Peer address
BtaAvCoSep sinks[BTAV_A2DP_CODEC_INDEX_MAX]; // Supported sinks
BtaAvCoSep sources[BTAV_A2DP_CODEC_INDEX_MAX]; // Supported sources
uint8_t num_sinks; // Total number of sinks at peer
uint8_t num_sources; // Total number of sources at peer
uint8_t num_seps; // Total number of SEPs at peer
uint8_t num_rx_sinks; // Number of received sinks
uint8_t num_rx_sources; // Number of received sources
uint8_t num_sup_sinks; // Number of supported sinks
uint8_t num_sup_sources; // Number of supported sources
const BtaAvCoSep* p_sink; // Currently selected sink
const BtaAvCoSep* p_source; // Currently selected source
uint8_t codec_config[AVDT_CODEC_SIZE]; // Current codec configuration
bool acceptor; // True if acceptor
bool reconfig_needed; // True if reconfiguration is needed
bool opened; // True if opened
uint16_t mtu; // Maximum Transmit Unit size
uint16_t uuid_to_connect; // UUID of peer device
private:
tBTA_AV_HNDL bta_av_handle_; // BTA AV handle to use
A2dpCodecs* codecs_; // Locally supported codecs
bool content_protect_active_; // True if Content Protect is active
};
class BtaAvCo {
public:
BtaAvCo(bool content_protect_enabled)
: active_peer_(nullptr),
codec_config_{},
content_protect_enabled_(content_protect_enabled),
content_protect_flag_(0) {
Reset();
}
/**
* Initialize the state.
*
* @param codec_priorities the codec priorities to use for the initialization
*/
void Init(const std::vector<btav_a2dp_codec_config_t>& codec_priorities);
/**
* Get the current codec configuration for the active peer.
*
* @return the current codec configuration if found, otherwise nullptr
*/
A2dpCodecConfig* GetActivePeerCurrentCodec();
/**
* Find the peer UUID for a given BTA AV handle.
*
* @param bta_av_handle the BTA AV handle to use
* @return the peer UUID if found, otherwise 0
*/
uint16_t FindPeerUuid(tBTA_AV_HNDL bta_av_handle);
/**
* Process the AVDTP discovery result: number of Stream End Points (SEP)
* found during the AVDTP stream discovery process.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param num_seps the number of discovered SEPs
* @param num_sinks number of discovered Sink SEPs
* @param num_sources number of discovered Source SEPs
* @param uuid_local local UUID
*/
void ProcessDiscoveryResult(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint8_t num_seps,
uint8_t num_sinks, uint8_t num_sources,
uint16_t uuid_local);
/**
* Process retrieved codec configuration and content protection from
* Peer Source SEP.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param p_codec_info the peer sink capability filled-in by the caller.
* On success, it will contain the current codec configuration for the peer.
* @param p_sep_info_idx the peer SEP index for the corresponding peer
* sink capability filled-in by the caller. On success, it will contain
* the SEP index for the current codec configuration for the peer.
* @param seid the peer SEP index in peer tables
* @param p_num_protect the peer SEP number of content protection elements
* filled-in by the caller. On success, it will contain the SEP number of
* content protection elements for the current codec configuration for the
* peer.
* @param p_protect_info the peer SEP content protection info filled-in by
* the caller. On success, it will contain the SEP content protection info
* for the current codec configuration for the peer.
* @return A2DP_SUCCESS on success, otherwise A2DP_FAIL
*/
tA2DP_STATUS ProcessSourceGetConfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint8_t* p_codec_info,
uint8_t* p_sep_info_idx, uint8_t seid,
uint8_t* p_num_protect,
uint8_t* p_protect_info);
/**
* Process retrieved codec configuration and content protection from
* Peer Source SEP.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param p_codec_info the peer source capability filled-in by the caller.
* On success, it will contain the current codec configuration for the peer.
* @param p_sep_info_idx the peer SEP index for the corresponding peer
* source capability filled-in by the caller. On success, it will contain
* the SEP index for the current codec configuration for the peer.
* @param seid the peer SEP index in peer tables
* @param p_num_protect the peer SEP number of content protection elements
* filled-in by the caller. On success, it will contain the SEP number of
* content protection elements for the current codec configuration for the
* peer.
* @param p_protect_info the peer SEP content protection info filled-in by
* the caller. On success, it will contain the SEP content protection info
* for the current codec configuration for the peer.
* @return A2DP_SUCCESS on success, otherwise A2DP_FAIL
*/
tA2DP_STATUS ProcessSinkGetConfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint8_t* p_codec_info,
uint8_t* p_sep_info_idx, uint8_t seid,
uint8_t* p_num_protect,
uint8_t* p_protect_info);
/**
* Process AVDTP Set Config to set the codec and content protection
* configuration of the audio stream.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param p_codec_info the codec configuration to set
* @param seid stream endpoint ID of stream initiating the operation
* @param peer_address the peer address
* @param num_protect the peer SEP number of content protection elements
* @param p_protect_info the peer SEP conntent protection info
* @param t_local_sep the local SEP: AVDT_TSEP_SRC or AVDT_TSEP_SNK
* @param avdt_handle the AVDTP handle
*/
void ProcessSetConfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
const uint8_t* p_codec_info, uint8_t seid,
uint8_t num_protect, const uint8_t* p_protect_info,
uint8_t t_local_sep, uint8_t avdt_handle);
/**
* Process AVDTP Open when the stream connection is opened.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param mtu the MTU of the connection
*/
void ProcessOpen(tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address,
uint16_t mtu);
/**
* Process AVDTP Close when the stream connection is closed.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
*/
void ProcessClose(tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address);
/**
* Process AVDTP Start when the audio data streaming is started.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param p_codec_info the codec configuration
* @param p_no_rtp_header on return, set to true if the audio data packets
* should not contain RTP header
*/
void ProcessStart(tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address,
const uint8_t* p_codec_info, bool* p_no_rtp_header);
/**
* Process AVDTP Stop when the audio data streaming is stopped.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
*/
void ProcessStop(tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address);
/**
* Get the next encoded audio data packet to send.
*
* @param p_codec_info the codec configuration
* @param p_timestamp on return, set to the timestamp of the data packet
* @return the next encoded data packet or nullptr if no encoded data to send
*/
BT_HDR* GetNextSourceDataPacket(const uint8_t* p_codec_info,
uint32_t* p_timestamp);
/**
* An audio packet has been dropped.
* This signal can be used by the encoder to reduce the encoder bit rate
* setting.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
*/
void DataPacketWasDropped(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address);
/**
* Process AVDTP Audio Delay when the initial delay report is received by
* the Source.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param delay the reported delay in 1/10th of a millisecond
*/
void ProcessAudioDelay(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t delay);
/**
* Update the MTU of the audio data connection.
*
* @param bta_av_handle the BTA AV handle to identify the peer
* @param peer_address the peer address
* @param mtu the new MTU of the audio data connection
*/
void UpdateMtu(tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address,
uint16_t mtu);
/**
* Set the active peer.
*
* @param peer_address the peer address
* @return true on success, otherwise false
*/
bool SetActivePeer(const RawAddress& peer_address);
/**
* Get the encoder parameters for a peer.
*
* @param peer_address the peer address
* @param p_peer_params on return, set to the peer's encoder parameters
*/
void GetPeerEncoderParameters(const RawAddress& peer_address,
tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params);
/**
* Get the Source encoder interface for the current codec.
*
* @return the Source encoder interface for the current codec
*/
const tA2DP_ENCODER_INTERFACE* GetSourceEncoderInterface();
/**
* Get the Sink decoder interface for the current codec.
*
* @return the Sink decoder interface for the current codec
*/
const tA2DP_DECODER_INTERFACE* GetSinkDecoderInterface();
/**
* Set the codec user configuration.
*
* @param peer_address the peer address
* @param codec_user_config the codec user configuration to set
* @return true on success, otherwise false
*/
bool SetCodecUserConfig(const RawAddress& peer_address,
const btav_a2dp_codec_config_t& codec_user_config);
/**
* Set the codec audio configuration.
*
* @param codec_audio_config the codec audio configuration to set
* @return true on success, otherwise false
*/
bool SetCodecAudioConfig(const btav_a2dp_codec_config_t& codec_audio_config);
/**
* Report the source codec state for a peer
*
* @param p_peer the peer to report
* @return true on success, otherwise false
*/
bool ReportSourceCodecState(BtaAvCoPeer* p_peer);
/**
* Get the content protection flag.
*
* @return the content protection flag. It should be one of the following:
* AVDT_CP_SCMS_COPY_NEVER, AVDT_CP_SCMS_COPY_ONCE, AVDT_CP_SCMS_COPY_FREE
*/
uint8_t ContentProtectFlag() const { return content_protect_flag_; }
/**
* Set the content protection flag.
*
* @param cp_flag the content protection flag. It should be one of the
* following:
* AVDT_CP_SCMS_COPY_NEVER, AVDT_CP_SCMS_COPY_ONCE, AVDT_CP_SCMS_COPY_FREE
* NOTE: If Content Protection is not enabled on the system, then
* the only acceptable vailue is AVDT_CP_SCMS_COPY_FREE.
*/
void SetContentProtectFlag(uint8_t cp_flag) {
if (!ContentProtectEnabled() && (cp_flag != AVDT_CP_SCMS_COPY_FREE)) {
return;
}
content_protect_flag_ = cp_flag;
}
/**
* Dump debug-related information.
*
* @param fd the file descritor to use for writing the ASCII formatted
* information
*/
void DebugDump(int fd);
private:
/**
* Reset the state.
*/
void Reset();
/**
* Find the peer entry for a given peer address.
*
* @param peer_address the peer address to use
* @return the peer entry if found, otherwise nullptr
*/
BtaAvCoPeer* FindPeer(const RawAddress& peer_address);
/**
* Find the peer entry for a given BTA AV handle.
*
* @param bta_av_handle the BTA AV handle to use
* @return the peer entry if found, otherwise nullptr
*/
BtaAvCoPeer* FindPeer(tBTA_AV_HNDL bta_av_handle);
/**
* Find the peer entry for a given BTA AV handle and update it with the
* peer address.
*
* @param bta_av_handle the BTA AV handle to use
* @param peer_address the peer address
* @return the peer entry if found, otherwise nullptr
*/
BtaAvCoPeer* FindPeerAndUpdate(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address);
/**
* Find the Source Peer SEP that supports the current codec config.
*
* @param p_peer the peer to use
* @return the peer SEP that supports the current codec config, otherwise
* nullptr
*/
const BtaAvCoSep* FindPeerSourceSepForCurrentCodec(const BtaAvCoPeer* p_peer);
/**
* Select the Source codec configuration based on peer codec support.
*
* Furthermore, the local state for the remaining non-selected codecs is
* updated to reflect whether the codec is selectable.
*
* @param p_peer the peer to use
* @return a pointer to the corresponding SEP Sink entry on success,
* otherwise nullptr
*/
BtaAvCoSep* SelectSourceCodec(BtaAvCoPeer* p_peer);
/**
* Save new codec configuration.
*
* @param p_peer the peer to use
* @param new_codec_config the new codec configuration to use
* @param num_protect the number of content protection elements
* @param p_protect_info the content protection info to use
*/
void SaveNewCodecConfig(BtaAvCoPeer* p_peer, const uint8_t* new_codec_config,
uint8_t num_protect, const uint8_t* p_protect_info);
/**
* Set the Over-The-Air preferred codec configuration.
*
* The OTA prefered codec configuration is ignored if the current
* codec configuration contains explicit user configuration, or if the
* codec configuration for the same codec contains explicit user
* configuration.
*
* @param p_peer is the peer device that sent the OTA codec configuration
* @param p_ota_codec_config contains the received OTA A2DP codec
* configuration from the remote peer. Note: this is not the peer codec
* capability, but the codec configuration that the peer would like to use.
* @param num_protect is the number of content protection methods to use
* @param p_protect_info contains the content protection information to use.
* @param p_restart_output if there is a change in the encoder configuration
* that requires restarting of the A2DP connection, flag |p_restart_output|
* is set to true.
* @return true on success, otherwise false
*/
bool SetCodecOtaConfig(BtaAvCoPeer* p_peer, const uint8_t* p_ota_codec_config,
uint8_t num_protect, const uint8_t* p_protect_info,
bool* p_restart_output);
/**
* Update a selectable codec with the corresponding codec information from
* a peer device.
*
* @param codec_config the codec config info to identify the codec to update
* @param p_peer the peer to use
* @return true if the codec is updated, otherwise false
*/
bool UpdateSelectableCodec(const A2dpCodecConfig& codec_config,
BtaAvCoPeer* p_peer);
/**
* Attempt to select codec configuration for a peer.
*
* @param codec_config the codec configuration to use
* @param p_peer the peer to use
* @return a pointer to the corresponding SEP Sink entry on success,
* otnerwise nullptr
*/
BtaAvCoSep* AttemptCodecSelection(const A2dpCodecConfig& codec_config,
BtaAvCoPeer* p_peer);
/**
* Check if a Sink SEP has content protection enabled.
*
* @param p_sink the peer Sink SEP to check
* @return true if the peer Sink SEP has content protection enabled,
* otherwise false
*/
bool AudioSinkHasContentProtection(const BtaAvCoSep* p_sink);
/**
* Check if a content protection service is SCMS-T.
*
* @param p_orotect_info the content protection info to check
* @return true if the Contention Protection in @param p_protect_info
* is SCMS-T, otherwise false
*/
static bool ContentProtectIsScmst(const uint8_t* p_protect_info);
/**
* Check if audio protect info contains SCMS-T Content Protection.
*
* @param num_protect number of protect schemes
* @param p_protect_info the protect info to check
* @return true if @param p_protect_info contains SCMS-T, otherwise false
*/
static bool AudioProtectHasScmst(uint8_t num_protect,
const uint8_t* p_protect_info);
bool ContentProtectEnabled() const { return content_protect_enabled_; }
std::recursive_mutex codec_lock_; // Protect access to the codec state
std::vector<btav_a2dp_codec_config_t> codec_priorities_; // Configured
BtaAvCoPeer peers_[BTA_AV_NUM_STRS]; // Connected peer information
BtaAvCoPeer* active_peer_; // The current active peer
uint8_t codec_config_[AVDT_CODEC_SIZE]; // Current codec configuration
const bool content_protect_enabled_; // True if Content Protect is enabled
uint8_t content_protect_flag_; // Content Protect flag
};
// SCMS-T protect info
const uint8_t bta_av_co_cp_scmst[AVDT_CP_INFO_LEN] = {0x02, 0x02, 0x00};
// Control block instance
#if (BTA_AV_CO_CP_SCMS_T == TRUE)
static const bool kContentProtectEnabled = true;
#else
static const bool kContentProtectEnabled = false;
#endif
static BtaAvCo bta_av_co_cb(kContentProtectEnabled);
void BtaAvCoPeer::Init(
const std::vector<btav_a2dp_codec_config_t>& codec_priorities) {
Reset(bta_av_handle_);
// Reset the current config
codecs_ = new A2dpCodecs(codec_priorities);
codecs_->init();
A2DP_InitDefaultCodec(codec_config);
}
void BtaAvCoPeer::Reset(tBTA_AV_HNDL bta_av_handle) {
addr = RawAddress::kEmpty;
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(sinks); i++) {
BtaAvCoSep& sink = sinks[i];
sink.Reset();
}
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(sources); i++) {
BtaAvCoSep& source = sources[i];
source.Reset();
}
num_sinks = 0;
num_sources = 0;
num_seps = 0;
num_rx_sinks = 0;
num_rx_sources = 0;
num_sup_sinks = 0;
num_sup_sources = 0;
p_sink = nullptr;
p_source = nullptr;
memset(codec_config, 0, sizeof(codec_config));
acceptor = false;
reconfig_needed = false;
opened = false;
mtu = 0;
uuid_to_connect = 0;
bta_av_handle_ = bta_av_handle;
delete codecs_;
codecs_ = nullptr;
content_protect_active_ = false;
}
void BtaAvCo::Init(
const std::vector<btav_a2dp_codec_config_t>& codec_priorities) {
APPL_TRACE_DEBUG("%s", __func__);
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
// Reset the control block
Reset();
codec_priorities_ = codec_priorities;
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(peers_); i++) {
BtaAvCoPeer* p_peer = &peers_[i];
p_peer->Init(codec_priorities);
}
}
void BtaAvCo::Reset() {
codec_priorities_.clear();
active_peer_ = nullptr;
content_protect_flag_ = 0;
memset(codec_config_, 0, sizeof(codec_config_));
if (ContentProtectEnabled()) {
SetContentProtectFlag(AVDT_CP_SCMS_COPY_NEVER);
} else {
SetContentProtectFlag(AVDT_CP_SCMS_COPY_FREE);
}
// Reset the peers and initialize the handles
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(peers_); i++) {
BtaAvCoPeer* p_peer = &peers_[i];
p_peer->Reset(BTA_AV_CO_AUDIO_INDEX_TO_HANDLE(i));
}
}
A2dpCodecConfig* BtaAvCo::GetActivePeerCurrentCodec() {
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
if (active_peer_ == nullptr || active_peer_->GetCodecs() == nullptr) {
return nullptr;
}
return active_peer_->GetCodecs()->getCurrentCodecConfig();
}
BtaAvCoPeer* BtaAvCo::FindPeer(const RawAddress& peer_address) {
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(peers_); i++) {
BtaAvCoPeer* p_peer = &peers_[i];
if (p_peer->addr == peer_address) {
return p_peer;
}
}
return nullptr;
}
BtaAvCoPeer* BtaAvCo::FindPeer(tBTA_AV_HNDL bta_av_handle) {
uint8_t index;
index = BTA_AV_CO_AUDIO_HANDLE_TO_INDEX(bta_av_handle);
APPL_TRACE_DEBUG("%s: bta_av_handle = 0x%x index = %d", __func__,
bta_av_handle, index);
// Sanity check
if (index >= BTA_AV_CO_NUM_ELEMENTS(peers_)) {
APPL_TRACE_ERROR(
"%s: peer index %d for BTA AV handle 0x%x is out of bounds", __func__,
index, bta_av_handle);
return nullptr;
}
return &peers_[index];
}
BtaAvCoPeer* BtaAvCo::FindPeerAndUpdate(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle = 0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle);
BtaAvCoPeer* p_peer = FindPeer(bta_av_handle);
if (p_peer == nullptr) {
APPL_TRACE_ERROR("%s: peer for BTA AV handle 0x%x not found", __func__,
bta_av_handle);
return nullptr;
}
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle = 0x%x previous address %s",
__func__, peer_address.ToString().c_str(), bta_av_handle,
p_peer->addr.ToString().c_str());
p_peer->addr = peer_address;
return p_peer;
}
uint16_t BtaAvCo::FindPeerUuid(tBTA_AV_HNDL bta_av_handle) {
BtaAvCoPeer* p_peer = FindPeer(bta_av_handle);
if (p_peer == nullptr) {
return 0;
}
return p_peer->uuid_to_connect;
}
void BtaAvCo::ProcessDiscoveryResult(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint8_t num_seps, uint8_t num_sinks,
uint8_t num_sources, uint16_t uuid_local) {
APPL_TRACE_DEBUG(
"%s: peer %s bta_av_handle:0x%x num_seps:%d num_sinks:%d num_sources:%d",
__func__, peer_address.ToString().c_str(), bta_av_handle, num_seps,
num_sinks, num_sources);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return;
}
/* Sanity check : this should never happen */
if (p_peer->opened) {
APPL_TRACE_ERROR("%s: peer %s already opened", __func__,
peer_address.ToString().c_str());
}
/* Copy the discovery results */
p_peer->addr = peer_address;
p_peer->num_sinks = num_sinks;
p_peer->num_sources = num_sources;
p_peer->num_seps = num_seps;
p_peer->num_rx_sinks = 0;
p_peer->num_rx_sources = 0;
p_peer->num_sup_sinks = 0;
if (uuid_local == UUID_SERVCLASS_AUDIO_SINK) {
p_peer->uuid_to_connect = UUID_SERVCLASS_AUDIO_SOURCE;
} else if (uuid_local == UUID_SERVCLASS_AUDIO_SOURCE) {
p_peer->uuid_to_connect = UUID_SERVCLASS_AUDIO_SINK;
}
}
tA2DP_STATUS BtaAvCo::ProcessSourceGetConfig(
tBTA_AV_HNDL bta_av_handle, const RawAddress& peer_address,
uint8_t* p_codec_info, uint8_t* p_sep_info_idx, uint8_t seid,
uint8_t* p_num_protect, uint8_t* p_protect_info) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle:0x%x codec:%s seid:%d", __func__,
peer_address.ToString().c_str(), bta_av_handle,
A2DP_CodecName(p_codec_info), seid);
APPL_TRACE_DEBUG("%s: num_protect:0x%02x protect_info:0x%02x%02x%02x",
__func__, *p_num_protect, p_protect_info[0],
p_protect_info[1], p_protect_info[2]);
A2DP_DumpCodecInfo(p_codec_info);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return A2DP_FAIL;
}
APPL_TRACE_DEBUG("%s: peer(o=%d, n_sinks=%d, n_rx_sinks=%d, n_sup_sinks=%d)",
__func__, p_peer->opened, p_peer->num_sinks,
p_peer->num_rx_sinks, p_peer->num_sup_sinks);
p_peer->num_rx_sinks++;
// Check the peer's Sink codec
if (A2DP_IsPeerSinkCodecValid(p_codec_info)) {
// If there is room for a new one
if (p_peer->num_sup_sinks < BTA_AV_CO_NUM_ELEMENTS(p_peer->sinks)) {
BtaAvCoSep* p_sink = &p_peer->sinks[p_peer->num_sup_sinks++];
APPL_TRACE_DEBUG("%s: saved caps[%x:%x:%x:%x:%x:%x]", __func__,
p_codec_info[1], p_codec_info[2], p_codec_info[3],
p_codec_info[4], p_codec_info[5], p_codec_info[6]);
memcpy(p_sink->codec_caps, p_codec_info, AVDT_CODEC_SIZE);
p_sink->sep_info_idx = *p_sep_info_idx;
p_sink->seid = seid;
p_sink->num_protect = *p_num_protect;
memcpy(p_sink->protect_info, p_protect_info, AVDT_CP_INFO_LEN);
} else {
APPL_TRACE_ERROR("%s: no more room for Sink info", __func__);
}
}
// Check if this is the last Sink get capabilities or all supported codec
// capabilities are retrieved.
if ((p_peer->num_rx_sinks != p_peer->num_sinks) &&
(p_peer->num_sup_sinks != BTA_AV_CO_NUM_ELEMENTS(p_peer->sinks))) {
return A2DP_FAIL;
}
APPL_TRACE_DEBUG("%s: last Sink reached", __func__);
// Select the Source codec
const BtaAvCoSep* p_sink = SelectSourceCodec(p_peer);
if (p_sink == nullptr) {
APPL_TRACE_ERROR("%s: cannot set up codec for the peer Sink", __func__);
return A2DP_FAIL;
}
// By default, no content protection
*p_num_protect = 0;
if (ContentProtectEnabled() && p_peer->ContentProtectActive()) {
*p_num_protect = AVDT_CP_INFO_LEN;
memcpy(p_protect_info, bta_av_co_cp_scmst, AVDT_CP_INFO_LEN);
}
// If acceptor -> reconfig otherwise reply for configuration
if (p_peer->acceptor) {
// Stop fetching caps once we retrieved a supported codec
APPL_TRACE_EVENT("%s: no need to fetch more SEPs", __func__);
*p_sep_info_idx = p_peer->num_seps;
if (p_peer->reconfig_needed) {
APPL_TRACE_DEBUG("%s: call BTA_AvReconfig(0x%x)", __func__,
bta_av_handle);
BTA_AvReconfig(bta_av_handle, true, p_sink->sep_info_idx,
p_peer->codec_config, *p_num_protect, bta_av_co_cp_scmst);
}
} else {
*p_sep_info_idx = p_sink->sep_info_idx;
memcpy(p_codec_info, p_peer->codec_config, AVDT_CODEC_SIZE);
}
return A2DP_SUCCESS;
}
tA2DP_STATUS BtaAvCo::ProcessSinkGetConfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint8_t* p_codec_info,
uint8_t* p_sep_info_idx,
uint8_t seid, uint8_t* p_num_protect,
uint8_t* p_protect_info) {
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle:0x%x codec:%s seid:%d", __func__,
peer_address.ToString().c_str(), bta_av_handle,
A2DP_CodecName(p_codec_info), seid);
APPL_TRACE_DEBUG("%s: num_protect:0x%02x protect_info:0x%02x%02x%02x",
__func__, *p_num_protect, p_protect_info[0],
p_protect_info[1], p_protect_info[2]);
A2DP_DumpCodecInfo(p_codec_info);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return A2DP_FAIL;
}
APPL_TRACE_DEBUG(
"%s: peer %s found (o=%d, n_sources=%d, n_rx_sources=%d, "
"n_sup_sources=%d)",
__func__, p_peer->addr.ToString().c_str(), p_peer->opened,
p_peer->num_sources, p_peer->num_rx_sources, p_peer->num_sup_sources);
p_peer->num_rx_sources++;
// Check the peer's Source codec
if (A2DP_IsPeerSourceCodecValid(p_codec_info)) {
// If there is room for a new one
if (p_peer->num_sup_sources < BTA_AV_CO_NUM_ELEMENTS(p_peer->sources)) {
BtaAvCoSep* p_source = &p_peer->sources[p_peer->num_sup_sources++];
APPL_TRACE_DEBUG("%s: saved caps[%x:%x:%x:%x:%x:%x]", __func__,
p_codec_info[1], p_codec_info[2], p_codec_info[3],
p_codec_info[4], p_codec_info[5], p_codec_info[6]);
memcpy(p_source->codec_caps, p_codec_info, AVDT_CODEC_SIZE);
p_source->sep_info_idx = *p_sep_info_idx;
p_source->seid = seid;
p_source->num_protect = *p_num_protect;
memcpy(p_source->protect_info, p_protect_info, AVDT_CP_INFO_LEN);
} else {
APPL_TRACE_ERROR("%s: no more room for Source info", __func__);
}
}
// Check if this is the last Source get capabilities or all supported codec
// capabilities are retrieved.
if ((p_peer->num_rx_sources != p_peer->num_sources) &&
(p_peer->num_sup_sources != BTA_AV_CO_NUM_ELEMENTS(p_peer->sources))) {
return A2DP_FAIL;
}
APPL_TRACE_DEBUG("%s: last Source reached", __func__);
// Find a Peer SEP that matches the codec config
const BtaAvCoSep* p_source = FindPeerSourceSepForCurrentCodec(p_peer);
if (p_source == nullptr) {
APPL_TRACE_ERROR("%s: cannot set up codec for the peer Source", __func__);
return A2DP_FAIL;
}
uint8_t pref_config[AVDT_CODEC_SIZE];
APPL_TRACE_DEBUG("%s: codec supported", __func__);
// Build the codec configuration for this Sink and save the new config
p_peer->p_source = p_source;
// Get preferred config from Source capabilities
if (A2DP_BuildSrc2SinkConfig(p_source->codec_caps, pref_config) !=
A2DP_SUCCESS) {
return A2DP_FAIL;
}
memcpy(p_peer->codec_config, pref_config, AVDT_CODEC_SIZE);
APPL_TRACE_DEBUG("%s: p_codec_info[%x:%x:%x:%x:%x:%x]", __func__,
p_peer->codec_config[1], p_peer->codec_config[2],
p_peer->codec_config[3], p_peer->codec_config[4],
p_peer->codec_config[5], p_peer->codec_config[6]);
// By default, no content protection
*p_num_protect = 0;
if (ContentProtectEnabled()) {
p_peer->SetContentProtectActive(false);
}
*p_sep_info_idx = p_source->sep_info_idx;
memcpy(p_codec_info, p_peer->codec_config, AVDT_CODEC_SIZE);
return A2DP_SUCCESS;
}
void BtaAvCo::ProcessSetConfig(tBTA_AV_HNDL bta_av_handle,
UNUSED_ATTR const RawAddress& peer_address,
const uint8_t* p_codec_info,
UNUSED_ATTR uint8_t seid, uint8_t num_protect,
const uint8_t* p_protect_info,
uint8_t t_local_sep, uint8_t avdt_handle) {
tA2DP_STATUS status = A2DP_SUCCESS;
uint8_t category = A2DP_SUCCESS;
bool reconfig_needed = false;
APPL_TRACE_DEBUG(
"%s: bta_av_handle=0x%x peer_address=%s seid=%d "
"num_protect=%d t_local_sep=%d avdt_handle=%d",
__func__, bta_av_handle, peer_address.ToString().c_str(), seid,
num_protect, t_local_sep, avdt_handle);
APPL_TRACE_DEBUG("%s: p_codec_info[%x:%x:%x:%x:%x:%x]", __func__,
p_codec_info[1], p_codec_info[2], p_codec_info[3],
p_codec_info[4], p_codec_info[5], p_codec_info[6]);
APPL_TRACE_DEBUG("%s: num_protect:0x%02x protect_info:0x%02x%02x%02x",
__func__, num_protect, p_protect_info[0], p_protect_info[1],
p_protect_info[2]);
A2DP_DumpCodecInfo(p_codec_info);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
// Call call-in rejecting the configuration
bta_av_ci_setconfig(bta_av_handle, A2DP_BUSY, AVDT_ASC_CODEC, 0, nullptr,
false, avdt_handle);
return;
}
APPL_TRACE_DEBUG(
"%s: peer %s found (o=%d, n_sinks=%d, n_rx_sinks=%d, "
"n_sup_sinks=%d)",
__func__, p_peer->addr.ToString().c_str(), p_peer->opened,
p_peer->num_sinks, p_peer->num_rx_sinks, p_peer->num_sup_sinks);
// Sanity check: should not be opened at this point
if (p_peer->opened) {
APPL_TRACE_ERROR("%s: peer %s already in use", __func__,
p_peer->addr.ToString().c_str());
}
if (num_protect != 0) {
if (ContentProtectEnabled()) {
if ((num_protect != 1) ||
!BtaAvCo::ContentProtectIsScmst(p_protect_info)) {
APPL_TRACE_ERROR("%s: wrong CP configuration for peer %s", __func__,
p_peer->addr.ToString().c_str());
status = A2DP_BAD_CP_TYPE;
category = AVDT_ASC_PROTECT;
}
} else {
// Do not support content protection for the time being
APPL_TRACE_ERROR("%s: wrong CP configuration for peer %s", __func__,
p_peer->addr.ToString().c_str());
status = A2DP_BAD_CP_TYPE;
category = AVDT_ASC_PROTECT;
}
}
if (status == A2DP_SUCCESS) {
bool codec_config_supported = false;
if (t_local_sep == AVDT_TSEP_SNK) {
APPL_TRACE_DEBUG("%s: peer %s is A2DP Source", __func__,
p_peer->addr.ToString().c_str());
codec_config_supported = A2DP_IsSinkCodecSupported(p_codec_info);
if (codec_config_supported) {
// If Peer is Source, and our config subset matches with what is
// requested by peer, then just accept what peer wants.
SaveNewCodecConfig(p_peer, p_codec_info, num_protect, p_protect_info);
}
}
if (t_local_sep == AVDT_TSEP_SRC) {
APPL_TRACE_DEBUG("%s: peer %s is A2DP SINK", __func__,
p_peer->addr.ToString().c_str());
bool restart_output = false;
if ((p_peer->GetCodecs() == nullptr) ||
!SetCodecOtaConfig(p_peer, p_codec_info, num_protect, p_protect_info,
&restart_output)) {
APPL_TRACE_ERROR("%s: cannot set source codec %s for peer %s", __func__,
A2DP_CodecName(p_codec_info),
p_peer->addr.ToString().c_str());
} else {
codec_config_supported = true;
// Check if reconfiguration is needed
if (restart_output ||
((num_protect == 1) && !p_peer->ContentProtectActive())) {
reconfig_needed = true;
}
}
}
// Check if codec configuration is supported
if (!codec_config_supported) {
category = AVDT_ASC_CODEC;
status = A2DP_WRONG_CODEC;
}
}
if (status != A2DP_SUCCESS) {
APPL_TRACE_DEBUG("%s: peer %s reject s=%d c=%d", __func__,
p_peer->addr.ToString().c_str(), status, category);
// Call call-in rejecting the configuration
bta_av_ci_setconfig(bta_av_handle, status, category, 0, nullptr, false,
avdt_handle);
return;
}
// Mark that this is an acceptor peer
p_peer->acceptor = true;
p_peer->reconfig_needed = reconfig_needed;
APPL_TRACE_DEBUG("%s: peer %s accept reconf=%d", __func__,
p_peer->addr.ToString().c_str(), reconfig_needed);
// Call call-in accepting the configuration
bta_av_ci_setconfig(bta_av_handle, A2DP_SUCCESS, A2DP_SUCCESS, 0, nullptr,
reconfig_needed, avdt_handle);
}
void BtaAvCo::ProcessOpen(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t mtu) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x mtu:%d", __func__,
peer_address.ToString().c_str(), bta_av_handle, mtu);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return;
}
p_peer->opened = true;
p_peer->mtu = mtu;
// The first connected peer becomes the active peer
if (active_peer_ == nullptr) {
active_peer_ = p_peer;
}
}
void BtaAvCo::ProcessClose(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle);
btif_av_reset_audio_delay();
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return;
}
// Reset the active peer
if (active_peer_ == p_peer) {
active_peer_ = nullptr;
}
// Mark the peer closed and clean the peer info
p_peer->Init(codec_priorities_);
}
void BtaAvCo::ProcessStart(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
const uint8_t* p_codec_info, bool* p_no_rtp_header) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return;
}
bool add_rtp_header =
A2DP_UsesRtpHeader(p_peer->ContentProtectActive(), p_codec_info);
APPL_TRACE_DEBUG("%s: bta_av_handle: 0x%x add_rtp_header: %s", __func__,
bta_av_handle, add_rtp_header ? "true" : "false");
*p_no_rtp_header = !add_rtp_header;
}
void BtaAvCo::ProcessStop(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle);
// Nothing to do
}
BT_HDR* BtaAvCo::GetNextSourceDataPacket(const uint8_t* p_codec_info,
uint32_t* p_timestamp) {
BT_HDR* p_buf;
APPL_TRACE_DEBUG("%s: codec: %s", __func__, A2DP_CodecName(p_codec_info));
p_buf = btif_a2dp_source_audio_readbuf();
if (p_buf == nullptr) return nullptr;
/*
* Retrieve the timestamp information from the media packet,
* and set up the packet header.
*
* In media packet, the following information is available:
* p_buf->layer_specific : number of audio frames in the packet
* p_buf->word[0] : timestamp
*/
if (!A2DP_GetPacketTimestamp(p_codec_info, (const uint8_t*)(p_buf + 1),
p_timestamp) ||
!A2DP_BuildCodecHeader(p_codec_info, p_buf, p_buf->layer_specific)) {
APPL_TRACE_ERROR("%s: unsupported codec type (%d)", __func__,
A2DP_GetCodecType(p_codec_info));
}
if (ContentProtectEnabled() && (active_peer_ != nullptr) &&
active_peer_->ContentProtectActive()) {
p_buf->len++;
p_buf->offset--;
uint8_t* p = (uint8_t*)(p_buf + 1) + p_buf->offset;
*p = ContentProtectFlag();
}
return p_buf;
}
void BtaAvCo::DataPacketWasDropped(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
APPL_TRACE_ERROR("%s: peer %s dropped audio packet on handle 0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle);
}
void BtaAvCo::ProcessAudioDelay(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint16_t delay) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x delay:0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle, delay);
btif_av_set_audio_delay(delay);
}
void BtaAvCo::UpdateMtu(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t mtu) {
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle: 0x%x mtu: %d", __func__,
peer_address.ToString().c_str(), bta_av_handle, mtu);
// Find the peer
BtaAvCoPeer* p_peer = FindPeerAndUpdate(bta_av_handle, peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR(
"%s: could not find peer entry for bta_av_handle 0x%x peer %s",
__func__, bta_av_handle, peer_address.ToString().c_str());
return;
}
p_peer->mtu = mtu;
}
bool BtaAvCo::SetActivePeer(const RawAddress& peer_address) {
APPL_TRACE_DEBUG("%s: peer_address=%s", __func__,
peer_address.ToString().c_str());
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
if (peer_address.IsEmpty()) {
// Reset the active peer;
active_peer_ = nullptr;
memset(codec_config_, 0, sizeof(codec_config_));
return true;
}
// Find the peer
BtaAvCoPeer* p_peer = FindPeer(peer_address);
if (p_peer == nullptr) {
return false;
}
active_peer_ = p_peer;
memcpy(codec_config_, active_peer_->codec_config, AVDT_CODEC_SIZE);
ReportSourceCodecState(active_peer_);
return true;
}
void BtaAvCo::GetPeerEncoderParameters(
const RawAddress& peer_address,
tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params) {
uint16_t min_mtu = 0xFFFF;
APPL_TRACE_DEBUG("%s: peer_address=%s", __func__,
peer_address.ToString().c_str());
CHECK(p_peer_params != nullptr);
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
// Compute the MTU
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(peers_); i++) {
const BtaAvCoPeer* p_peer = &peers_[i];
if (!p_peer->opened) continue;
if (p_peer->addr != peer_address) continue;
if (p_peer->mtu < min_mtu) min_mtu = p_peer->mtu;
}
p_peer_params->peer_mtu = min_mtu;
p_peer_params->is_peer_edr = btif_av_is_peer_edr(peer_address);
p_peer_params->peer_supports_3mbps =
btif_av_peer_supports_3mbps(peer_address);
}
const tA2DP_ENCODER_INTERFACE* BtaAvCo::GetSourceEncoderInterface() {
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
return A2DP_GetEncoderInterface(codec_config_);
}
const tA2DP_DECODER_INTERFACE* BtaAvCo::GetSinkDecoderInterface() {
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
return A2DP_GetDecoderInterface(codec_config_);
}
bool BtaAvCo::SetCodecUserConfig(
const RawAddress& peer_address,
const btav_a2dp_codec_config_t& codec_user_config) {
uint8_t result_codec_config[AVDT_CODEC_SIZE];
const BtaAvCoSep* p_sink = nullptr;
bool restart_input = false;
bool restart_output = false;
bool config_updated = false;
bool success = true;
APPL_TRACE_DEBUG("%s: peer_address=%s codec_user_config=%s", __func__,
peer_address.ToString().c_str(),
codec_user_config.ToString().c_str());
BtaAvCoPeer* p_peer = FindPeer(peer_address);
if (p_peer == nullptr) {
APPL_TRACE_ERROR("%s: cannot find peer %s to configure", __func__,
peer_address.ToString().c_str());
success = false;
goto done;
}
// Find the peer SEP codec to use
if (codec_user_config.codec_type < BTAV_A2DP_CODEC_INDEX_MAX) {
for (size_t index = 0; index < p_peer->num_sup_sinks; index++) {
btav_a2dp_codec_index_t peer_codec_index =
A2DP_SourceCodecIndex(p_peer->sinks[index].codec_caps);
if (peer_codec_index != codec_user_config.codec_type) continue;
if (!AudioSinkHasContentProtection(&p_peer->sinks[index])) {
continue;
}
p_sink = &p_peer->sinks[index];
break;
}
} else {
// Use the current sink codec
p_sink = p_peer->p_sink;
}
if (p_sink == nullptr) {
APPL_TRACE_ERROR("%s: cannot find peer SEP to configure for codec type %d",
__func__, codec_user_config.codec_type);
success = false;
goto done;
}
tA2DP_ENCODER_INIT_PEER_PARAMS peer_params;
GetPeerEncoderParameters(p_peer->addr, &peer_params);
if (!p_peer->GetCodecs()->setCodecUserConfig(
codec_user_config, &peer_params, p_sink->codec_caps,
result_codec_config, &restart_input, &restart_output,
&config_updated)) {
success = false;
goto done;
}
if (restart_output) {
uint8_t num_protect = 0;
if (ContentProtectEnabled() && p_peer->ContentProtectActive()) {
num_protect = AVDT_CP_INFO_LEN;
}
p_sink = SelectSourceCodec(p_peer);
if (p_sink == nullptr) {
APPL_TRACE_ERROR("%s: cannot set up codec for the peer SINK", __func__);
success = false;
goto done;
}
// Don't call BTA_AvReconfig() prior to retrieving all peer's capabilities
if ((p_peer->num_rx_sinks != p_peer->num_sinks) &&
(p_peer->num_sup_sinks != BTA_AV_CO_NUM_ELEMENTS(p_peer->sinks))) {
APPL_TRACE_WARNING("%s: not all peer's capabilities have been retrieved",
__func__);
success = false;
goto done;
}
APPL_TRACE_DEBUG("%s: call BTA_AvReconfig(0x%x)", __func__,
p_peer->BtaAvHandle());
BTA_AvReconfig(p_peer->BtaAvHandle(), true, p_sink->sep_info_idx,
p_peer->codec_config, num_protect, bta_av_co_cp_scmst);
}
done:
// NOTE: We unconditionally send the upcall even if there is no change
// or the user config failed. Thus, the caller would always know whether the
// request succeeded or failed.
// NOTE: Currently, the input is restarted by sending an upcall
// and informing the Media Framework about the change.
if (p_peer != nullptr) {
return ReportSourceCodecState(p_peer);
}
return success;
}
bool BtaAvCo::SetCodecAudioConfig(
const btav_a2dp_codec_config_t& codec_audio_config) {
uint8_t result_codec_config[AVDT_CODEC_SIZE];
bool restart_output = false;
bool config_updated = false;
APPL_TRACE_DEBUG("%s: codec_audio_config: %s", __func__,
codec_audio_config.ToString().c_str());
// Find the peer that is currently open
BtaAvCoPeer* p_peer = active_peer_;
if (p_peer == nullptr) {
APPL_TRACE_ERROR("%s: no active peer to configure", __func__);
return false;
}
// Use the current sink codec
const BtaAvCoSep* p_sink = p_peer->p_sink;
if (p_sink == nullptr) {
APPL_TRACE_ERROR("%s: cannot find peer SEP to configure", __func__);
return false;
}
tA2DP_ENCODER_INIT_PEER_PARAMS peer_params;
GetPeerEncoderParameters(p_peer->addr, &peer_params);
if (!p_peer->GetCodecs()->setCodecAudioConfig(
codec_audio_config, &peer_params, p_sink->codec_caps,
result_codec_config, &restart_output, &config_updated)) {
return false;
}
if (restart_output) {
uint8_t num_protect = 0;
if (ContentProtectEnabled() && p_peer->ContentProtectActive()) {
num_protect = AVDT_CP_INFO_LEN;
}
SaveNewCodecConfig(p_peer, result_codec_config, p_sink->num_protect,
p_sink->protect_info);
// Don't call BTA_AvReconfig() prior to retrieving all peer's capabilities
if ((p_peer->num_rx_sinks != p_peer->num_sinks) &&
(p_peer->num_sup_sinks != BTA_AV_CO_NUM_ELEMENTS(p_peer->sinks))) {
APPL_TRACE_WARNING("%s: not all peer's capabilities have been retrieved",
__func__);
} else {
APPL_TRACE_DEBUG("%s: call BTA_AvReconfig(0x%x)", __func__,
p_peer->BtaAvHandle());
BTA_AvReconfig(p_peer->BtaAvHandle(), true, p_sink->sep_info_idx,
p_peer->codec_config, num_protect, bta_av_co_cp_scmst);
}
}
if (config_updated) {
// NOTE: Currently, the input is restarted by sending an upcall
// and informing the Media Framework about the change.
return ReportSourceCodecState(p_peer);
}
return true;
}
bool BtaAvCo::ReportSourceCodecState(BtaAvCoPeer* p_peer) {
btav_a2dp_codec_config_t codec_config;
std::vector<btav_a2dp_codec_config_t> codecs_local_capabilities;
std::vector<btav_a2dp_codec_config_t> codecs_selectable_capabilities;
APPL_TRACE_DEBUG("%s: peer_address=%s", __func__,
p_peer->addr.ToString().c_str());
if (!p_peer->GetCodecs()->getCodecConfigAndCapabilities(
&codec_config, &codecs_local_capabilities,
&codecs_selectable_capabilities)) {
APPL_TRACE_WARNING(
"%s: Peer %s : error reporting audio source codec state: "
"cannot get codec config and capabilities",
__func__, p_peer->addr.ToString().c_str());
return false;
}
do_in_jni_thread(
FROM_HERE,
base::Bind(&btif_av_report_source_codec_state, p_peer->addr, codec_config,
codecs_local_capabilities, codecs_selectable_capabilities));
return true;
}
void BtaAvCo::DebugDump(int fd) {
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
dprintf(fd, "\nA2DP Codecs and Peers State:\n");
dprintf(fd, " Active peer: %s\n",
(active_peer_ != nullptr) ? active_peer_->addr.ToString().c_str()
: "null");
for (size_t i = 0; i < BTA_AV_CO_NUM_ELEMENTS(peers_); i++) {
const BtaAvCoPeer& peer = peers_[i];
dprintf(fd, " Peer: %s\n", peer.addr.ToString().c_str());
dprintf(fd, " Number of sinks: %u\n", peer.num_sinks);
dprintf(fd, " Number of sources: %u\n", peer.num_sources);
dprintf(fd, " Number of SEPs: %u\n", peer.num_seps);
dprintf(fd, " Number of received sinks: %u\n", peer.num_rx_sinks);
dprintf(fd, " Number of received sources: %u\n", peer.num_rx_sources);
dprintf(fd, " Number of supported sinks: %u\n", peer.num_sup_sinks);
dprintf(fd, " Number of supported sources: %u\n", peer.num_sup_sources);
dprintf(fd, " Acceptor: %s\n", (peer.acceptor) ? "true" : "false");
dprintf(fd, " Reconfig needed: %s\n",
(peer.reconfig_needed) ? "true" : "false");
dprintf(fd, " Opened: %s\n", (peer.opened) ? "true" : "false");
dprintf(fd, " MTU: %u\n", peer.mtu);
dprintf(fd, " UUID to connect: 0x%x\n", peer.uuid_to_connect);
dprintf(fd, " BTA AV handle: %u\n", peer.BtaAvHandle());
}
//
// Active peer codec-specific stats
//
if (active_peer_ != nullptr) {
A2dpCodecs* a2dp_codecs = active_peer_->GetCodecs();
if (a2dp_codecs != nullptr) {
a2dp_codecs->debug_codec_dump(fd);
}
}
}
bool BtaAvCo::ContentProtectIsScmst(const uint8_t* p_protect_info) {
APPL_TRACE_DEBUG("%s", __func__);
if (*p_protect_info >= AVDT_CP_LOSC) {
uint16_t cp_id;
p_protect_info++;
STREAM_TO_UINT16(cp_id, p_protect_info);
if (cp_id == AVDT_CP_SCMS_T_ID) {
APPL_TRACE_DEBUG("%s: SCMS-T found", __func__);
return true;
}
}
return false;
}
bool BtaAvCo::AudioProtectHasScmst(uint8_t num_protect,
const uint8_t* p_protect_info) {
APPL_TRACE_DEBUG("%s", __func__);
while (num_protect--) {
if (BtaAvCo::ContentProtectIsScmst(p_protect_info)) return true;
// Move to the next Content Protect schema
p_protect_info += *p_protect_info + 1;
}
APPL_TRACE_DEBUG("%s: SCMS-T not found", __func__);
return false;
}
bool BtaAvCo::AudioSinkHasContentProtection(const BtaAvCoSep* p_sink) {
APPL_TRACE_DEBUG("%s", __func__);
// Check if content protection is enabled for this stream
if (ContentProtectFlag() != AVDT_CP_SCMS_COPY_FREE) {
return BtaAvCo::AudioProtectHasScmst(p_sink->num_protect,
p_sink->protect_info);
}
APPL_TRACE_DEBUG("%s: not required", __func__);
return true;
}
const BtaAvCoSep* BtaAvCo::FindPeerSourceSepForCurrentCodec(
const BtaAvCoPeer* p_peer) {
APPL_TRACE_DEBUG("%s: peer num_sup_sources = %d", __func__,
p_peer->num_sup_sources);
for (size_t index = 0; index < p_peer->num_sup_sources; index++) {
const uint8_t* p_codec_caps = p_peer->sources[index].codec_caps;
if (A2DP_CodecTypeEquals(codec_config_, p_codec_caps) &&
A2DP_IsPeerSourceCodecSupported(p_codec_caps)) {
return &p_peer->sources[index];
}
}
return nullptr;
}
BtaAvCoSep* BtaAvCo::SelectSourceCodec(BtaAvCoPeer* p_peer) {
BtaAvCoSep* p_sink = nullptr;
// Update all selectable codecs.
// This is needed to update the selectable parameters for each codec.
// NOTE: The selectable codec info is used only for informational purpose.
for (const auto& iter : p_peer->GetCodecs()->orderedSourceCodecs()) {
APPL_TRACE_DEBUG("%s: updating selectable codec %s", __func__,
iter->name().c_str());
UpdateSelectableCodec(*iter, p_peer);
}
// Select the codec
for (const auto& iter : p_peer->GetCodecs()->orderedSourceCodecs()) {
APPL_TRACE_DEBUG("%s: trying codec %s", __func__, iter->name().c_str());
p_sink = AttemptCodecSelection(*iter, p_peer);
if (p_sink != nullptr) {
APPL_TRACE_DEBUG("%s: selected codec %s", __func__, iter->name().c_str());
break;
}
APPL_TRACE_DEBUG("%s: cannot use codec %s", __func__, iter->name().c_str());
}
// NOTE: Unconditionally dispatch the event to make sure a callback with
// the most recent codec info is generated.
ReportSourceCodecState(p_peer);
return p_sink;
}
BtaAvCoSep* BtaAvCo::AttemptCodecSelection(const A2dpCodecConfig& codec_config,
BtaAvCoPeer* p_peer) {
uint8_t new_codec_config[AVDT_CODEC_SIZE];
APPL_TRACE_DEBUG("%s", __func__);
// Find the peer sink for the codec
BtaAvCoSep* p_sink = nullptr;
for (size_t index = 0; index < p_peer->num_sup_sinks; index++) {
btav_a2dp_codec_index_t peer_codec_index =
A2DP_SourceCodecIndex(p_peer->sinks[index].codec_caps);
if (peer_codec_index != codec_config.codecIndex()) {
continue;
}
if (!AudioSinkHasContentProtection(&p_peer->sinks[index])) {
APPL_TRACE_DEBUG(
"%s: peer sink for codec %s does not support "
"Content Protection",
__func__, codec_config.name().c_str());
continue;
}
p_sink = &p_peer->sinks[index];
break;
}
if (p_sink == nullptr) {
APPL_TRACE_DEBUG("%s: peer sink for codec %s not found", __func__,
codec_config.name().c_str());
return nullptr;
}
if (!p_peer->GetCodecs()->setCodecConfig(
p_sink->codec_caps, true /* is_capability */, new_codec_config,
true /* select_current_codec */)) {
APPL_TRACE_DEBUG("%s: cannot set source codec %s", __func__,
codec_config.name().c_str());
return nullptr;
}
p_peer->p_sink = p_sink;
SaveNewCodecConfig(p_peer, new_codec_config, p_sink->num_protect,
p_sink->protect_info);
return p_sink;
}
bool BtaAvCo::UpdateSelectableCodec(const A2dpCodecConfig& codec_config,
BtaAvCoPeer* p_peer) {
uint8_t new_codec_config[AVDT_CODEC_SIZE];
APPL_TRACE_DEBUG("%s", __func__);
// Find the peer sink for the codec
const BtaAvCoSep* p_sink = nullptr;
for (size_t index = 0; index < p_peer->num_sup_sinks; index++) {
btav_a2dp_codec_index_t peer_codec_index =
A2DP_SourceCodecIndex(p_peer->sinks[index].codec_caps);
if (peer_codec_index != codec_config.codecIndex()) {
continue;
}
if (!AudioSinkHasContentProtection(&p_peer->sinks[index])) {
APPL_TRACE_DEBUG(
"%s: peer sink for codec %s does not support "
"Content Protection",
__func__, codec_config.name().c_str());
continue;
}
p_sink = &p_peer->sinks[index];
break;
}
if (p_sink == nullptr) {
// The peer sink device does not support this codec
return false;
}
if (!p_peer->GetCodecs()->setCodecConfig(
p_sink->codec_caps, true /* is_capability */, new_codec_config,
false /* select_current_codec */)) {
APPL_TRACE_DEBUG("%s: cannot update source codec %s", __func__,
codec_config.name().c_str());
return false;
}
return true;
}
void BtaAvCo::SaveNewCodecConfig(BtaAvCoPeer* p_peer,
const uint8_t* new_codec_config,
uint8_t num_protect,
const uint8_t* p_protect_info) {
APPL_TRACE_DEBUG("%s: peer %s", __func__, p_peer->addr.ToString().c_str());
A2DP_DumpCodecInfo(new_codec_config);
std::lock_guard<std::recursive_mutex> lock(codec_lock_);
memcpy(codec_config_, new_codec_config, sizeof(codec_config_));
memcpy(p_peer->codec_config, new_codec_config, AVDT_CODEC_SIZE);
if (ContentProtectEnabled()) {
// Check if this Sink supports SCMS
bool cp_active = BtaAvCo::AudioProtectHasScmst(num_protect, p_protect_info);
p_peer->SetContentProtectActive(cp_active);
}
}
bool BtaAvCo::SetCodecOtaConfig(BtaAvCoPeer* p_peer,
const uint8_t* p_ota_codec_config,
uint8_t num_protect,
const uint8_t* p_protect_info,
bool* p_restart_output) {
uint8_t result_codec_config[AVDT_CODEC_SIZE];
bool restart_input = false;
bool restart_output = false;
bool config_updated = false;
APPL_TRACE_DEBUG("%s: peer_address=%s", __func__,
p_peer->addr.ToString().c_str());
A2DP_DumpCodecInfo(p_ota_codec_config);
*p_restart_output = false;
// Find the peer SEP codec to use
btav_a2dp_codec_index_t ota_codec_index =
A2DP_SourceCodecIndex(p_ota_codec_config);
if (ota_codec_index == BTAV_A2DP_CODEC_INDEX_MAX) {
APPL_TRACE_WARNING("%s: invalid peer codec config", __func__);
return false;
}
const BtaAvCoSep* p_sink = nullptr;
for (size_t index = 0; index < p_peer->num_sup_sinks; index++) {
btav_a2dp_codec_index_t peer_codec_index =
A2DP_SourceCodecIndex(p_peer->sinks[index].codec_caps);
if (peer_codec_index != ota_codec_index) continue;
if (!AudioSinkHasContentProtection(&p_peer->sinks[index])) {
continue;
}
p_sink = &p_peer->sinks[index];
break;
}
if ((p_peer->num_sup_sinks > 0) && (p_sink == nullptr)) {
// There are no peer SEPs if we didn't do the discovery procedure yet.
// We have all the information we need from the peer, so we can
// proceed with the OTA codec configuration.
APPL_TRACE_ERROR("%s: cannot find peer SEP to configure", __func__);
return false;
}
tA2DP_ENCODER_INIT_PEER_PARAMS peer_params;
GetPeerEncoderParameters(p_peer->addr, &peer_params);
if (!p_peer->GetCodecs()->setCodecOtaConfig(
p_ota_codec_config, &peer_params, result_codec_config, &restart_input,
&restart_output, &config_updated)) {
APPL_TRACE_ERROR("%s: cannot set OTA config", __func__);
return false;
}
if (restart_output) {
APPL_TRACE_DEBUG("%s: restart output", __func__);
A2DP_DumpCodecInfo(result_codec_config);
*p_restart_output = true;
p_peer->p_sink = p_sink;
SaveNewCodecConfig(p_peer, result_codec_config, num_protect,
p_protect_info);
}
if (restart_input || config_updated) {
// NOTE: Currently, the input is restarted by sending an upcall
// and informing the Media Framework about the change.
ReportSourceCodecState(p_peer);
}
return true;
}
void bta_av_co_init(
const std::vector<btav_a2dp_codec_config_t>& codec_priorities) {
bta_av_co_cb.Init(codec_priorities);
}
A2dpCodecConfig* bta_av_get_a2dp_current_codec(void) {
return bta_av_co_cb.GetActivePeerCurrentCodec();
}
bool bta_av_co_audio_init(btav_a2dp_codec_index_t codec_index,
AvdtpSepConfig* p_cfg) {
return A2DP_InitCodecConfig(codec_index, p_cfg);
}
void bta_av_co_audio_disc_res(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint8_t num_seps,
uint8_t num_sinks, uint8_t num_sources,
uint16_t uuid_local) {
bta_av_co_cb.ProcessDiscoveryResult(bta_av_handle, peer_address, num_seps,
num_sinks, num_sources, uuid_local);
}
tA2DP_STATUS bta_av_co_audio_getconfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
uint8_t* p_codec_info,
uint8_t* p_sep_info_idx, uint8_t seid,
uint8_t* p_num_protect,
uint8_t* p_protect_info) {
uint16_t peer_uuid = bta_av_co_cb.FindPeerUuid(bta_av_handle);
APPL_TRACE_DEBUG("%s: peer %s bta_av_handle=0x%x peer_uuid=0x%x", __func__,
peer_address.ToString().c_str(), bta_av_handle, peer_uuid);
switch (peer_uuid) {
case UUID_SERVCLASS_AUDIO_SOURCE:
return bta_av_co_cb.ProcessSinkGetConfig(
bta_av_handle, peer_address, p_codec_info, p_sep_info_idx, seid,
p_num_protect, p_protect_info);
case UUID_SERVCLASS_AUDIO_SINK:
return bta_av_co_cb.ProcessSourceGetConfig(
bta_av_handle, peer_address, p_codec_info, p_sep_info_idx, seid,
p_num_protect, p_protect_info);
default:
break;
}
APPL_TRACE_ERROR("%s: Invalid peer UUID: 0x%x for bta_av_handle 0x%x",
peer_uuid, bta_av_handle);
return A2DP_FAIL;
}
void bta_av_co_audio_setconfig(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
const uint8_t* p_codec_info, uint8_t seid,
uint8_t num_protect,
const uint8_t* p_protect_info,
uint8_t t_local_sep, uint8_t avdt_handle) {
bta_av_co_cb.ProcessSetConfig(bta_av_handle, peer_address, p_codec_info, seid,
num_protect, p_protect_info, t_local_sep,
avdt_handle);
}
void bta_av_co_audio_open(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t mtu) {
bta_av_co_cb.ProcessOpen(bta_av_handle, peer_address, mtu);
}
void bta_av_co_audio_close(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
bta_av_co_cb.ProcessClose(bta_av_handle, peer_address);
}
void bta_av_co_audio_start(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address,
const uint8_t* p_codec_info, bool* p_no_rtp_header) {
bta_av_co_cb.ProcessStart(bta_av_handle, peer_address, p_codec_info,
p_no_rtp_header);
}
void bta_av_co_audio_stop(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
bta_av_co_cb.ProcessStop(bta_av_handle, peer_address);
}
BT_HDR* bta_av_co_audio_source_data_path(const uint8_t* p_codec_info,
uint32_t* p_timestamp) {
return bta_av_co_cb.GetNextSourceDataPacket(p_codec_info, p_timestamp);
}
void bta_av_co_audio_drop(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address) {
bta_av_co_cb.DataPacketWasDropped(bta_av_handle, peer_address);
}
void bta_av_co_audio_delay(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t delay) {
bta_av_co_cb.ProcessAudioDelay(bta_av_handle, peer_address, delay);
}
void bta_av_co_audio_update_mtu(tBTA_AV_HNDL bta_av_handle,
const RawAddress& peer_address, uint16_t mtu) {
bta_av_co_cb.UpdateMtu(bta_av_handle, peer_address, mtu);
}
bool bta_av_co_set_active_peer(const RawAddress& peer_address) {
return bta_av_co_cb.SetActivePeer(peer_address);
}
void bta_av_co_get_peer_params(const RawAddress& peer_address,
tA2DP_ENCODER_INIT_PEER_PARAMS* p_peer_params) {
bta_av_co_cb.GetPeerEncoderParameters(peer_address, p_peer_params);
}
const tA2DP_ENCODER_INTERFACE* bta_av_co_get_encoder_interface(void) {
return bta_av_co_cb.GetSourceEncoderInterface();
}
const tA2DP_DECODER_INTERFACE* bta_av_co_get_decoder_interface(void) {
return bta_av_co_cb.GetSinkDecoderInterface();
}
bool bta_av_co_set_codec_user_config(
const RawAddress& peer_address,
const btav_a2dp_codec_config_t& codec_user_config) {
return bta_av_co_cb.SetCodecUserConfig(peer_address, codec_user_config);
}
bool bta_av_co_set_codec_audio_config(
const btav_a2dp_codec_config_t& codec_audio_config) {
return bta_av_co_cb.SetCodecAudioConfig(codec_audio_config);
}
void btif_a2dp_codec_debug_dump(int fd) { bta_av_co_cb.DebugDump(fd); }