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components/bt/host/bluedroid/btc/profile/std/a2dp/bta_av_co.c
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/******************************************************************************
*
* Copyright (C) 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
* BTC.
*
******************************************************************************/
#include "string.h"
#include "common/bt_target.h"
#include "stack/a2d_api.h"
#include "stack/a2d_sbc.h"
#include "bta/bta_sys.h"
#include "bta/bta_av_api.h"
#include "bta/bta_av_co.h"
#include "bta/bta_av_ci.h"
#include "bta/bta_av_sbc.h"
#include "btc_a2dp.h"
#include "btc_a2dp_source.h"
#include "btc_av_co.h"
#include "btc/btc_util.h"
#include "osi/mutex.h"
#if BTC_AV_INCLUDED
/*****************************************************************************
** Constants
*****************************************************************************/
#define FUNC_TRACE() APPL_TRACE_DEBUG("%s", __FUNCTION__);
/* Macro to retrieve the number of elements in a statically allocated array */
#define BTA_AV_CO_NUM_ELEMENTS(__a) (sizeof(__a)/sizeof((__a)[0]))
/* MIN and MAX macros */
#define BTA_AV_CO_MIN(X,Y) ((X) < (Y) ? (X) : (Y))
#define BTA_AV_CO_MAX(X,Y) ((X) > (Y) ? (X) : (Y))
/* Macro to convert audio handle to index and vice versa */
#define BTA_AV_CO_AUDIO_HNDL_TO_INDX(hndl) (((hndl) & (~BTA_AV_CHNL_MSK)) - 1)
#define BTA_AV_CO_AUDIO_INDX_TO_HNDL(indx) (((indx) + 1) | BTA_AV_CHNL_AUDIO)
/* Offsets to access codec information in SBC codec */
#define BTA_AV_CO_SBC_FREQ_CHAN_OFF 3
#define BTA_AV_CO_SBC_BLOCK_BAND_OFF 4
#define BTA_AV_CO_SBC_MIN_BITPOOL_OFF 5
#define BTA_AV_CO_SBC_MAX_BITPOOL_OFF 6
#define BTA_AV_CO_SBC_MAX_BITPOOL 53
/* SCMS-T protect info */
const UINT8 bta_av_co_cp_scmst[BTA_AV_CP_INFO_LEN] = "\x02\x02\x00";
/* SBC SRC codec capabilities */
const tA2D_SBC_CIE bta_av_co_sbc_caps = {
(A2D_SBC_IE_SAMP_FREQ_44), /* samp_freq */
(A2D_SBC_IE_CH_MD_MONO | A2D_SBC_IE_CH_MD_STEREO | A2D_SBC_IE_CH_MD_JOINT | A2D_SBC_IE_CH_MD_DUAL), /* ch_mode */
(A2D_SBC_IE_BLOCKS_16 | A2D_SBC_IE_BLOCKS_12 | A2D_SBC_IE_BLOCKS_8 | A2D_SBC_IE_BLOCKS_4), /* block_len */
(A2D_SBC_IE_SUBBAND_4 | A2D_SBC_IE_SUBBAND_8), /* num_subbands */
(A2D_SBC_IE_ALLOC_MD_L | A2D_SBC_IE_ALLOC_MD_S), /* alloc_mthd */
BTA_AV_CO_SBC_MAX_BITPOOL, /* max_bitpool */
A2D_SBC_IE_MIN_BITPOOL /* min_bitpool */
};
/* SBC SINK codec capabilities */
const tA2D_SBC_CIE bta_av_co_sbc_sink_caps = {
(A2D_SBC_IE_SAMP_FREQ_48 | A2D_SBC_IE_SAMP_FREQ_44), /* samp_freq */
(A2D_SBC_IE_CH_MD_MONO | A2D_SBC_IE_CH_MD_STEREO | A2D_SBC_IE_CH_MD_JOINT | A2D_SBC_IE_CH_MD_DUAL), /* ch_mode */
(A2D_SBC_IE_BLOCKS_16 | A2D_SBC_IE_BLOCKS_12 | A2D_SBC_IE_BLOCKS_8 | A2D_SBC_IE_BLOCKS_4), /* block_len */
(A2D_SBC_IE_SUBBAND_4 | A2D_SBC_IE_SUBBAND_8), /* num_subbands */
(A2D_SBC_IE_ALLOC_MD_L | A2D_SBC_IE_ALLOC_MD_S), /* alloc_mthd */
A2D_SBC_IE_MAX_BITPOOL, /* max_bitpool */
A2D_SBC_IE_MIN_BITPOOL /* min_bitpool */
};
#if !defined(BTC_AV_SBC_DEFAULT_SAMP_FREQ)
#define BTC_AV_SBC_DEFAULT_SAMP_FREQ A2D_SBC_IE_SAMP_FREQ_44
#endif
/* Default SBC codec configuration */
const tA2D_SBC_CIE btc_av_sbc_default_config = {
BTC_AV_SBC_DEFAULT_SAMP_FREQ, /* samp_freq */
A2D_SBC_IE_CH_MD_JOINT, /* ch_mode */
A2D_SBC_IE_BLOCKS_16, /* block_len */
A2D_SBC_IE_SUBBAND_8, /* num_subbands */
A2D_SBC_IE_ALLOC_MD_L, /* alloc_mthd */
BTA_AV_CO_SBC_MAX_BITPOOL, /* max_bitpool */
A2D_SBC_IE_MIN_BITPOOL /* min_bitpool */
};
/* Control block instance */
#if AVRC_DYNAMIC_MEMORY == FALSE
tBTA_AV_CO_CB bta_av_co_cb;
#else
tBTA_AV_CO_CB *bta_av_co_cb_ptr;
#endif
static BOOLEAN bta_av_co_audio_codec_build_config(const UINT8 *p_codec_caps, UINT8 *p_codec_cfg);
static void bta_av_co_audio_peer_reset_config(tBTA_AV_CO_PEER *p_peer);
static BOOLEAN bta_av_co_cp_is_scmst(const UINT8 *p_protectinfo);
static BOOLEAN bta_av_co_audio_sink_has_scmst(const tBTA_AV_CO_SINK *p_sink);
static BOOLEAN bta_av_co_audio_peer_supports_codec(tBTA_AV_CO_PEER *p_peer, UINT8 *p_snk_index);
static UINT8 bta_av_co_audio_media_supports_config(UINT8 codec_type, const UINT8 *p_codec_cfg);
static UINT8 bta_av_co_audio_sink_supports_config(UINT8 codec_type, const UINT8 *p_codec_cfg);
static BOOLEAN bta_av_co_audio_peer_src_supports_codec(tBTA_AV_CO_PEER *p_peer, UINT8 *p_src_index);
/*******************************************************************************
**
** Function bta_av_co_cp_is_active
**
** Description Get the current configuration of content protection
**
** Returns TRUE if the current streaming has CP, FALSE otherwise
**
*******************************************************************************/
BOOLEAN bta_av_co_cp_is_active(void)
{
FUNC_TRACE();
return bta_av_co_cb.cp.active;
}
/*******************************************************************************
**
** Function bta_av_co_cp_get_flag
**
** Description Get content protection flag
** BTA_AV_CP_SCMS_COPY_NEVER
** BTA_AV_CP_SCMS_COPY_ONCE
** BTA_AV_CP_SCMS_COPY_FREE
**
** Returns The current flag value
**
*******************************************************************************/
UINT8 bta_av_co_cp_get_flag(void)
{
FUNC_TRACE();
return bta_av_co_cb.cp.flag;
}
/*******************************************************************************
**
** Function bta_av_co_cp_set_flag
**
** Description Set content protection flag
** BTA_AV_CP_SCMS_COPY_NEVER
** BTA_AV_CP_SCMS_COPY_ONCE
** BTA_AV_CP_SCMS_COPY_FREE
**
** Returns TRUE if setting the SCMS flag is supported else FALSE
**
*******************************************************************************/
BOOLEAN bta_av_co_cp_set_flag(UINT8 cp_flag)
{
FUNC_TRACE();
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
#else
if (cp_flag != BTA_AV_CP_SCMS_COPY_FREE) {
return FALSE;
}
#endif
bta_av_co_cb.cp.flag = cp_flag;
return TRUE;
}
/*******************************************************************************
**
** Function bta_av_co_get_peer
**
** Description find the peer entry for a given handle
**
** Returns the control block
**
*******************************************************************************/
static tBTA_AV_CO_PEER *bta_av_co_get_peer(tBTA_AV_HNDL hndl)
{
UINT8 index;
FUNC_TRACE();
index = BTA_AV_CO_AUDIO_HNDL_TO_INDX(hndl);
/* Sanity check */
if (index >= BTA_AV_CO_NUM_ELEMENTS(bta_av_co_cb.peers)) {
APPL_TRACE_ERROR("bta_av_co_get_peer peer index out of bounds:%d", index);
return NULL;
}
return &bta_av_co_cb.peers[index];
}
/*******************************************************************************
**
** Function bta_av_co_audio_init
**
** Description This callout function is executed by AV when it is
** started by calling BTA_AvRegister(). This function can be
** used by the phone to initialize audio paths or for other
** initialization purposes.
**
**
** Returns Stream codec and content protection capabilities info.
**
*******************************************************************************/
BOOLEAN bta_av_co_audio_init(UINT8 *p_codec_type, UINT8 *p_codec_info, UINT8 *p_num_protect,
UINT8 *p_protect_info, UINT8 tsep)
{
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_init: %d", tsep);
/* By default - no content protection info */
*p_num_protect = 0;
*p_protect_info = 0;
/* reset remote preference through setconfig */
bta_av_co_cb.codec_cfg_setconfig.id = BTC_AV_CODEC_NONE;
if (tsep == AVDT_TSEP_SRC) {
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
do {
UINT8 *p = p_protect_info;
/* Content protection info - support SCMS-T */
*p_num_protect = 1;
*p++ = BTA_AV_CP_LOSC;
UINT16_TO_STREAM(p, BTA_AV_CP_SCMS_T_ID);
} while (0);
#endif
/* Set up for SBC codec for SRC*/
*p_codec_type = BTA_AV_CODEC_SBC;
/* This should not fail because we are using constants for parameters */
A2D_BldSbcInfo(AVDT_MEDIA_AUDIO, (tA2D_SBC_CIE *) &bta_av_co_sbc_caps, p_codec_info);
return TRUE;
} else if (tsep == AVDT_TSEP_SNK) {
*p_codec_type = BTA_AV_CODEC_SBC;
/* This should not fail because we are using constants for parameters */
A2D_BldSbcInfo(AVDT_MEDIA_AUDIO, (tA2D_SBC_CIE *) &bta_av_co_sbc_sink_caps, p_codec_info);
/* Codec is valid */
return TRUE;
} else {
APPL_TRACE_WARNING("invalid SEP type %d", tsep);
return FALSE;
}
}
/*******************************************************************************
**
** Function bta_av_co_audio_disc_res
**
** Description This callout function is executed by AV to report the
** number of stream end points (SEP) were found during the
** AVDT stream discovery process.
**
**
** Returns void.
**
*******************************************************************************/
void bta_av_co_audio_disc_res(tBTA_AV_HNDL hndl, UINT8 num_seps, UINT8 num_snk,
UINT8 num_src, BD_ADDR addr, UINT16 uuid_local)
{
tBTA_AV_CO_PEER *p_peer;
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_disc_res h:x%x num_seps:%d num_snk:%d num_src:%d",
hndl, num_seps, num_snk, num_src);
/* Find the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_disc_res could not find peer entry");
return;
}
/* Sanity check : this should never happen */
if (p_peer->opened) {
APPL_TRACE_ERROR("bta_av_co_audio_disc_res peer already opened");
}
/* Copy the discovery results */
bdcpy(p_peer->addr, addr);
p_peer->num_snks = num_snk;
p_peer->num_srcs = num_src;
p_peer->num_seps = num_seps;
p_peer->num_rx_snks = 0;
p_peer->num_rx_srcs = 0;
p_peer->num_sup_snks = 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;
}
p_peer->got_disc_res = TRUE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_cfg_res
**
** Description This callout function is executed by AV to report the
** number of stream end points (SEP) were found during the
** incoming AVDT stream config request process.
**
**
** Returns void.
**
*******************************************************************************/
void bta_av_co_audio_cfg_res(tBTA_AV_HNDL hndl, UINT8 num_seps, UINT8 num_snk,
UINT8 num_src, BD_ADDR addr, UINT16 uuid_local)
{
tBTA_AV_CO_PEER *p_peer;
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_cfg_res h:x%x num_seps:%d num_snk:%d num_src:%d",
hndl, num_seps, num_snk, num_src);
/* Find the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_cfg_res could not find peer entry");
return;
}
/* Sanity check : this should never happen */
if (p_peer->opened) {
APPL_TRACE_ERROR("bta_av_co_audio_cfg_res peer already opened");
}
/* Copy the discovery results */
bdcpy(p_peer->addr, addr);
if (!p_peer->got_disc_res) {
p_peer->num_snks = num_snk;
p_peer->num_srcs = num_src;
p_peer->num_seps = num_seps;
p_peer->num_rx_snks = 0;
p_peer->num_rx_srcs = 0;
p_peer->num_sup_snks = 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;
}
}
/*******************************************************************************
**
** Function bta_av_build_src_cfg
**
** Description This function will build preferred config from src capabilities
**
**
** Returns Pass or Fail for current getconfig.
**
*******************************************************************************/
void bta_av_build_src_cfg (UINT8 *p_pref_cfg, UINT8 *p_src_cap)
{
tA2D_SBC_CIE src_cap;
tA2D_SBC_CIE pref_cap;
UINT8 status = 0;
/* initialize it to default SBC configuration */
A2D_BldSbcInfo(AVDT_MEDIA_AUDIO, (tA2D_SBC_CIE *) &btc_av_sbc_default_config, p_pref_cfg);
/* now try to build a preferred one */
/* parse configuration */
if ((status = A2D_ParsSbcInfo(&src_cap, p_src_cap, TRUE)) != 0) {
APPL_TRACE_DEBUG(" Cant parse src cap ret = %d", status);
return ;
}
if (src_cap.samp_freq & A2D_SBC_IE_SAMP_FREQ_48) {
pref_cap.samp_freq = A2D_SBC_IE_SAMP_FREQ_48;
} else if (src_cap.samp_freq & A2D_SBC_IE_SAMP_FREQ_44) {
pref_cap.samp_freq = A2D_SBC_IE_SAMP_FREQ_44;
}
if (src_cap.ch_mode & A2D_SBC_IE_CH_MD_JOINT) {
pref_cap.ch_mode = A2D_SBC_IE_CH_MD_JOINT;
} else if (src_cap.ch_mode & A2D_SBC_IE_CH_MD_STEREO) {
pref_cap.ch_mode = A2D_SBC_IE_CH_MD_STEREO;
} else if (src_cap.ch_mode & A2D_SBC_IE_CH_MD_DUAL) {
pref_cap.ch_mode = A2D_SBC_IE_CH_MD_DUAL;
} else if (src_cap.ch_mode & A2D_SBC_IE_CH_MD_MONO) {
pref_cap.ch_mode = A2D_SBC_IE_CH_MD_MONO;
}
if (src_cap.block_len & A2D_SBC_IE_BLOCKS_16) {
pref_cap.block_len = A2D_SBC_IE_BLOCKS_16;
} else if (src_cap.block_len & A2D_SBC_IE_BLOCKS_12) {
pref_cap.block_len = A2D_SBC_IE_BLOCKS_12;
} else if (src_cap.block_len & A2D_SBC_IE_BLOCKS_8) {
pref_cap.block_len = A2D_SBC_IE_BLOCKS_8;
} else if (src_cap.block_len & A2D_SBC_IE_BLOCKS_4) {
pref_cap.block_len = A2D_SBC_IE_BLOCKS_4;
}
if (src_cap.num_subbands & A2D_SBC_IE_SUBBAND_8) {
pref_cap.num_subbands = A2D_SBC_IE_SUBBAND_8;
} else if (src_cap.num_subbands & A2D_SBC_IE_SUBBAND_4) {
pref_cap.num_subbands = A2D_SBC_IE_SUBBAND_4;
}
if (src_cap.alloc_mthd & A2D_SBC_IE_ALLOC_MD_L) {
pref_cap.alloc_mthd = A2D_SBC_IE_ALLOC_MD_L;
} else if (src_cap.alloc_mthd & A2D_SBC_IE_ALLOC_MD_S) {
pref_cap.alloc_mthd = A2D_SBC_IE_ALLOC_MD_S;
}
pref_cap.max_bitpool = src_cap.max_bitpool;
pref_cap.min_bitpool = src_cap.min_bitpool;
A2D_BldSbcInfo(AVDT_MEDIA_AUDIO, (tA2D_SBC_CIE *) &pref_cap, p_pref_cfg);
}
/*******************************************************************************
**
** Function bta_av_audio_sink_getconfig
**
** Description This callout function is executed by AV to retrieve the
** desired codec and content protection configuration for the
** A2DP Sink audio stream in Initiator.
**
**
** Returns Pass or Fail for current getconfig.
**
*******************************************************************************/
UINT8 bta_av_audio_sink_getconfig(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type,
UINT8 *p_codec_info, UINT8 *p_sep_info_idx, UINT8 seid, UINT8 *p_num_protect,
UINT8 *p_protect_info)
{
UINT8 result = A2D_FAIL;
BOOLEAN supported;
tBTA_AV_CO_PEER *p_peer;
tBTA_AV_CO_SINK *p_src;
UINT8 pref_cfg[AVDT_CODEC_SIZE];
UINT8 index;
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_audio_sink_getconfig handle:0x%x codec_type:%d seid:%d",
hndl, codec_type, seid);
APPL_TRACE_DEBUG("num_protect:0x%02x protect_info:0x%02x%02x%02x",
*p_num_protect, p_protect_info[0], p_protect_info[1], p_protect_info[2]);
/* Retrieve the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_audio_sink_getconfig could not find peer entry");
return A2D_FAIL;
}
APPL_TRACE_DEBUG("bta_av_audio_sink_getconfig peer(o=%d,n_snks=%d,n_rx_snks=%d,n_sup_snks=%d)",
p_peer->opened, p_peer->num_srcs, p_peer->num_rx_srcs, p_peer->num_sup_srcs);
p_peer->num_rx_srcs++;
/* Check if this is a supported configuration */
supported = FALSE;
switch (codec_type) {
case BTA_AV_CODEC_SBC:
supported = TRUE;
break;
default:
break;
}
if (supported) {
/* If there is room for a new one */
if (p_peer->num_sup_srcs < BTA_AV_CO_NUM_ELEMENTS(p_peer->srcs)) {
p_src = &p_peer->srcs[p_peer->num_sup_srcs++];
APPL_TRACE_DEBUG("bta_av_audio_sink_getconfig saved caps[%x:%x:%x:%x:%x:%x]",
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_src->codec_caps, p_codec_info, AVDT_CODEC_SIZE);
p_src->codec_type = codec_type;
p_src->sep_info_idx = *p_sep_info_idx;
p_src->seid = seid;
p_src->num_protect = *p_num_protect;
memcpy(p_src->protect_info, p_protect_info, BTA_AV_CP_INFO_LEN);
} else {
APPL_TRACE_ERROR("bta_av_audio_sink_getconfig no more room for SRC info");
}
}
/* If last SNK get capabilities or all supported codec caps retrieved */
if ((p_peer->num_rx_srcs == p_peer->num_srcs) ||
(p_peer->num_sup_srcs == BTA_AV_CO_NUM_ELEMENTS(p_peer->srcs))) {
APPL_TRACE_DEBUG("bta_av_audio_sink_getconfig last SRC reached");
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_lock();
/* Find a src that matches the codec config */
if (bta_av_co_audio_peer_src_supports_codec(p_peer, &index)) {
APPL_TRACE_DEBUG(" Codec Supported ");
p_src = &p_peer->srcs[index];
/* Build the codec configuration for this sink */
{
/* Save the new configuration */
p_peer->p_src = p_src;
/* get preferred config from src_caps */
bta_av_build_src_cfg(pref_cfg, p_src->codec_caps);
memcpy(p_peer->codec_cfg, pref_cfg, AVDT_CODEC_SIZE);
APPL_TRACE_DEBUG("bta_av_audio_sink_getconfig p_codec_info[%x:%x:%x:%x:%x:%x]",
p_peer->codec_cfg[1], p_peer->codec_cfg[2], p_peer->codec_cfg[3],
p_peer->codec_cfg[4], p_peer->codec_cfg[5], p_peer->codec_cfg[6]);
/* By default, no content protection */
*p_num_protect = 0;
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
p_peer->cp_active = FALSE;
bta_av_co_cb.cp.active = FALSE;
#endif
*p_sep_info_idx = p_src->sep_info_idx;
memcpy(p_codec_info, p_peer->codec_cfg, AVDT_CODEC_SIZE);
result = A2D_SUCCESS;
}
}
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_unlock();
}
return result;
}
/*******************************************************************************
**
** Function bta_av_co_audio_getconfig
**
** Description This callout function is executed by AV to retrieve the
** desired codec and content protection configuration for the
** audio stream.
**
**
** Returns Stream codec and content protection configuration info.
**
*******************************************************************************/
UINT8 bta_av_co_audio_getconfig(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type,
UINT8 *p_codec_info, UINT8 *p_sep_info_idx, UINT8 seid, UINT8 *p_num_protect,
UINT8 *p_protect_info)
{
UINT8 result = A2D_FAIL;
BOOLEAN supported;
tBTA_AV_CO_PEER *p_peer;
tBTA_AV_CO_SINK *p_sink;
UINT8 codec_cfg[AVDT_CODEC_SIZE];
UINT8 index;
FUNC_TRACE();
/* Retrieve the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_getconfig could not find peer entry");
return A2D_FAIL;
}
if (p_peer->uuid_to_connect == UUID_SERVCLASS_AUDIO_SOURCE) {
result = bta_av_audio_sink_getconfig(hndl, codec_type, p_codec_info, p_sep_info_idx,
seid, p_num_protect, p_protect_info);
return result;
}
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig handle:0x%x codec_type:%d seid:%d",
hndl, codec_type, seid);
APPL_TRACE_DEBUG("num_protect:0x%02x protect_info:0x%02x%02x%02x",
*p_num_protect, p_protect_info[0], p_protect_info[1], p_protect_info[2]);
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig peer(o=%d,n_snks=%d,n_rx_snks=%d,n_sup_snks=%d)",
p_peer->opened, p_peer->num_snks, p_peer->num_rx_snks, p_peer->num_sup_snks);
p_peer->num_rx_snks++;
/* Check if this is a supported configuration */
supported = FALSE;
switch (codec_type) {
case BTA_AV_CODEC_SBC:
supported = TRUE;
break;
default:
break;
}
if (supported) {
/* If there is room for a new one */
if (p_peer->num_sup_snks < BTA_AV_CO_NUM_ELEMENTS(p_peer->snks)) {
p_sink = &p_peer->snks[p_peer->num_sup_snks++];
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig saved caps[%x:%x:%x:%x:%x:%x]",
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->codec_type = codec_type;
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, BTA_AV_CP_INFO_LEN);
} else {
APPL_TRACE_ERROR("bta_av_co_audio_getconfig no more room for SNK info");
}
}
/* If last SNK get capabilities or all supported codec capa retrieved */
if ((p_peer->num_rx_snks == p_peer->num_snks) ||
(p_peer->num_sup_snks == BTA_AV_CO_NUM_ELEMENTS(p_peer->snks))) {
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig last sink reached");
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_lock();
/* Find a sink that matches the codec config */
if (bta_av_co_audio_peer_supports_codec(p_peer, &index)) {
/* stop fetching caps once we retrieved a supported codec */
if (p_peer->acp) {
*p_sep_info_idx = p_peer->num_seps;
APPL_TRACE_EVENT("no need to fetch more SEPs");
}
p_sink = &p_peer->snks[index];
/* Build the codec configuration for this sink */
if (bta_av_co_audio_codec_build_config(p_sink->codec_caps, codec_cfg)) {
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig reconfig p_codec_info[%x:%x:%x:%x:%x:%x]",
codec_cfg[1], codec_cfg[2], codec_cfg[3],
codec_cfg[4], codec_cfg[5], codec_cfg[6]);
/* Save the new configuration */
p_peer->p_snk = p_sink;
memcpy(p_peer->codec_cfg, codec_cfg, AVDT_CODEC_SIZE);
/* By default, no content protection */
*p_num_protect = 0;
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
/* Check if this sink supports SCMS */
if (bta_av_co_audio_sink_has_scmst(p_sink)) {
p_peer->cp_active = TRUE;
bta_av_co_cb.cp.active = TRUE;
*p_num_protect = BTA_AV_CP_INFO_LEN;
memcpy(p_protect_info, bta_av_co_cp_scmst, BTA_AV_CP_INFO_LEN);
} else {
p_peer->cp_active = FALSE;
bta_av_co_cb.cp.active = FALSE;
}
#endif
/* If acceptor -> reconfig otherwise reply for configuration */
if (p_peer->acp) {
if (p_peer->recfg_needed) {
APPL_TRACE_DEBUG("bta_av_co_audio_getconfig call BTA_AvReconfig(x%x)", hndl);
BTA_AvReconfig(hndl, TRUE, p_sink->sep_info_idx, p_peer->codec_cfg, *p_num_protect, (UINT8 *)bta_av_co_cp_scmst);
}
} else {
*p_sep_info_idx = p_sink->sep_info_idx;
memcpy(p_codec_info, p_peer->codec_cfg, AVDT_CODEC_SIZE);
}
result = A2D_SUCCESS;
}
}
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_unlock();
}
return result;
}
/*******************************************************************************
**
** Function bta_av_co_audio_setconfig
**
** Description This callout function is executed by AV to set the codec and
** content protection configuration of the audio stream.
**
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_setconfig(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type,
UINT8 *p_codec_info, UINT8 seid, BD_ADDR addr, UINT8 num_protect, UINT8 *p_protect_info,
UINT8 t_local_sep, UINT8 avdt_handle)
{
tBTA_AV_CO_PEER *p_peer;
UINT8 status = A2D_SUCCESS;
UINT8 category = A2D_SUCCESS;
BOOLEAN recfg_needed = FALSE;
UINT8 codec_cfg_status = A2D_SUCCESS;
UNUSED(seid);
UNUSED(addr);
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_setconfig p_codec_info[%x:%x:%x:%x:%x:%x]",
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("num_protect:0x%02x protect_info:0x%02x%02x%02x",
num_protect, p_protect_info[0], p_protect_info[1], p_protect_info[2]);
/* Retrieve the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_setconfig could not find peer entry");
/* Call call-in rejecting the configuration */
bta_av_ci_setconfig(hndl, A2D_BUSY, AVDT_ASC_CODEC, 0, NULL, FALSE, avdt_handle);
return;
}
APPL_TRACE_DEBUG("bta_av_co_audio_setconfig peer(o=%d,n_snks=%d,n_rx_snks=%d,n_sup_snks=%d)",
p_peer->opened, p_peer->num_snks, p_peer->num_rx_snks, p_peer->num_sup_snks);
/* Sanity check: should not be opened at this point */
if (p_peer->opened) {
APPL_TRACE_ERROR("bta_av_co_audio_setconfig peer already in use");
}
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
if (num_protect != 0) {
/* If CP is supported */
if ((num_protect != 1) ||
(bta_av_co_cp_is_scmst(p_protect_info) == FALSE)) {
APPL_TRACE_ERROR("bta_av_co_audio_setconfig wrong CP configuration");
status = A2D_BAD_CP_TYPE;
category = AVDT_ASC_PROTECT;
}
}
#else
/* Do not support content protection for the time being */
if (num_protect != 0) {
APPL_TRACE_ERROR("bta_av_co_audio_setconfig wrong CP configuration");
status = A2D_BAD_CP_TYPE;
category = AVDT_ASC_PROTECT;
}
#endif
if (status == A2D_SUCCESS) {
if (AVDT_TSEP_SNK == t_local_sep) {
codec_cfg_status = bta_av_co_audio_sink_supports_config(codec_type, p_codec_info);
APPL_TRACE_DEBUG(" Peer is A2DP SRC ");
}
if (AVDT_TSEP_SRC == t_local_sep) {
codec_cfg_status = bta_av_co_audio_media_supports_config(codec_type, p_codec_info);
APPL_TRACE_DEBUG(" Peer is A2DP SINK ");
}
/* Check if codec configuration is supported */
if (codec_cfg_status == A2D_SUCCESS) {
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_lock();
/* Check if the configuration matches the current codec config */
switch (bta_av_co_cb.codec_cfg.id) {
case BTC_AV_CODEC_SBC:
if ((codec_type != BTA_AV_CODEC_SBC) || memcmp(p_codec_info, bta_av_co_cb.codec_cfg.info, 5)) {
recfg_needed = TRUE;
} else if ((num_protect == 1) && (!bta_av_co_cb.cp.active)) {
recfg_needed = TRUE;
}
/* if remote side requests a restricted notify sinks preferred bitpool range as all other params are
already checked for validify */
APPL_TRACE_EVENT("remote peer setconfig bitpool range [%d:%d]",
p_codec_info[BTA_AV_CO_SBC_MIN_BITPOOL_OFF],
p_codec_info[BTA_AV_CO_SBC_MAX_BITPOOL_OFF] );
bta_av_co_cb.codec_cfg_setconfig.id = BTC_AV_CODEC_SBC;
memcpy(bta_av_co_cb.codec_cfg_setconfig.info, p_codec_info, AVDT_CODEC_SIZE);
if (AVDT_TSEP_SNK == t_local_sep) {
/* If Peer is SRC, and our cfg subset matches with what is requested by peer, then
just accept what peer wants */
memcpy(bta_av_co_cb.codec_cfg.info, p_codec_info, AVDT_CODEC_SIZE);
recfg_needed = FALSE;
}
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_setconfig unsupported cid %d", bta_av_co_cb.codec_cfg.id);
recfg_needed = TRUE;
break;
}
/* Protect access to bta_av_co_cb.codec_cfg */
osi_mutex_global_unlock();
} else {
category = AVDT_ASC_CODEC;
status = A2D_FAIL;
}
}
if (status != A2D_SUCCESS) {
APPL_TRACE_DEBUG("bta_av_co_audio_setconfig reject s=%d c=%d", codec_cfg_status, category);
/* Call call-in rejecting the configuration */
bta_av_ci_setconfig(hndl, codec_cfg_status, category, 0, NULL, FALSE, avdt_handle);
} else {
/* Mark that this is an acceptor peer */
p_peer->acp = TRUE;
p_peer->recfg_needed = recfg_needed;
APPL_TRACE_DEBUG("bta_av_co_audio_setconfig accept reconf=%d", recfg_needed);
/* Call call-in accepting the configuration */
bta_av_ci_setconfig(hndl, A2D_SUCCESS, A2D_SUCCESS, 0, NULL, recfg_needed, avdt_handle);
}
}
/*******************************************************************************
**
** Function bta_av_co_audio_open
**
** Description This function is called by AV when the audio stream connection
** is opened.
**
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_open(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type, UINT8 *p_codec_info,
UINT16 mtu)
{
tBTA_AV_CO_PEER *p_peer;
UNUSED(p_codec_info);
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_open mtu:%d codec_type:%d", mtu, codec_type);
/* Retrieve the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_setconfig could not find peer entry");
} else {
p_peer->opened = TRUE;
p_peer->mtu = mtu;
}
}
/*******************************************************************************
**
** Function bta_av_co_audio_close
**
** Description This function is called by AV when the audio stream connection
** is closed.
**
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_close(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type, UINT16 mtu)
{
tBTA_AV_CO_PEER *p_peer;
UNUSED(codec_type);
UNUSED(mtu);
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_close");
/* Retrieve the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer) {
/* Mark the peer closed and clean the peer info */
memset(p_peer, 0, sizeof(*p_peer));
} else {
APPL_TRACE_ERROR("bta_av_co_audio_close could not find peer entry");
}
/* reset remote preference through setconfig */
bta_av_co_cb.codec_cfg_setconfig.id = BTC_AV_CODEC_NONE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_start
**
** Description This function is called by AV when the audio streaming data
** transfer is started.
**
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_start(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type,
UINT8 *p_codec_info, BOOLEAN *p_no_rtp_hdr)
{
UNUSED(hndl);
UNUSED(codec_type);
UNUSED(p_codec_info);
UNUSED(p_no_rtp_hdr);
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_start");
}
/*******************************************************************************
**
** Function bta_av_co_audio_stop
**
** Description This function is called by AV when the audio streaming data
** transfer is stopped.
**
**
** Returns void
**
*******************************************************************************/
extern void bta_av_co_audio_stop(tBTA_AV_HNDL hndl, tBTA_AV_CODEC codec_type)
{
UNUSED(hndl);
UNUSED(codec_type);
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_stop");
}
/*******************************************************************************
**
** Function bta_av_co_audio_src_data_path
**
** Description This function is called to manage data transfer from
** the audio codec to AVDTP.
**
** Returns Pointer to the buffer to send, NULL if no buffer to send
**
*******************************************************************************/
void *bta_av_co_audio_src_data_path(tBTA_AV_CODEC codec_type, UINT32 *p_len,
UINT32 *p_timestamp)
{
#if BTC_AV_SRC_INCLUDED
BT_HDR *p_buf;
UNUSED(p_len);
FUNC_TRACE();
p_buf = btc_a2dp_source_audio_readbuf();
if (p_buf != NULL) {
switch (codec_type) {
case BTA_AV_CODEC_SBC:
/* In media packet SBC, the following information is available:
* p_buf->layer_specific : number of SBC frames in the packet
* p_buf->word[0] : timestamp
*/
/* Retrieve the timestamp information from the media packet */
*p_timestamp = *((UINT32 *) (p_buf + 1));
/* Set up packet header */
bta_av_sbc_bld_hdr(p_buf, p_buf->layer_specific);
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_src_data_path Unsupported codec type (%d)", codec_type);
break;
}
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
{
UINT8 *p;
if (bta_av_co_cp_is_active()) {
p_buf->len++;
p_buf->offset--;
p = (UINT8 *)(p_buf + 1) + p_buf->offset;
*p = bta_av_co_cp_get_flag();
}
}
#endif
}
return p_buf;
#else /* BTC_AV_SRC_INCLUDED */
return NULL;
#endif /* BTC_AV_SRC_INCLUDED */
}
/*******************************************************************************
**
** Function bta_av_co_audio_drop
**
** Description An Audio packet is dropped. .
** It's very likely that the connected headset with this handle
** is moved far away. The implementation may want to reduce
** the encoder bit rate setting to reduce the packet size.
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_drop(tBTA_AV_HNDL hndl)
{
FUNC_TRACE();
APPL_TRACE_ERROR("bta_av_co_audio_drop dropped: x%x", hndl);
}
/*******************************************************************************
**
** Function bta_av_co_audio_delay
**
** Description This function is called by AV when the audio stream connection
** needs to send the initial delay report to the connected SRC.
**
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_delay(tBTA_AV_HNDL hndl, UINT16 delay)
{
FUNC_TRACE();
btc_source_report_delay_value(delay);
APPL_TRACE_DEBUG("bta_av_co_audio_delay handle: x%x, delay:0x%x", hndl, delay);
}
/*******************************************************************************
**
** Function bta_av_co_audio_codec_build_config
**
** Description Build the codec configuration
**
** Returns TRUE if the codec was built successfully, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_codec_build_config(const UINT8 *p_codec_caps, UINT8 *p_codec_cfg)
{
FUNC_TRACE();
memset(p_codec_cfg, 0, AVDT_CODEC_SIZE);
switch (bta_av_co_cb.codec_cfg.id) {
case BTC_AV_CODEC_SBC:
/* only copy the relevant portions for this codec to avoid issues when
comparing codec configs covering larger codec sets than SBC (7 bytes) */
memcpy(p_codec_cfg, bta_av_co_cb.codec_cfg.info, BTA_AV_CO_SBC_MAX_BITPOOL_OFF + 1);
/* Update the bit pool boundaries with the codec capabilities */
p_codec_cfg[BTA_AV_CO_SBC_MIN_BITPOOL_OFF] = p_codec_caps[BTA_AV_CO_SBC_MIN_BITPOOL_OFF];
p_codec_cfg[BTA_AV_CO_SBC_MAX_BITPOOL_OFF] = p_codec_caps[BTA_AV_CO_SBC_MAX_BITPOOL_OFF];
APPL_TRACE_EVENT("bta_av_co_audio_codec_build_config : bitpool min %d, max %d",
p_codec_cfg[BTA_AV_CO_SBC_MIN_BITPOOL_OFF],
p_codec_caps[BTA_AV_CO_SBC_MAX_BITPOOL_OFF]);
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_codec_build_config: unsupported codec id %d", bta_av_co_cb.codec_cfg.id);
return FALSE;
break;
}
return TRUE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_codec_cfg_matches_caps
**
** Description Check if a codec config matches a codec capabilities
**
** Returns TRUE if it codec config is supported, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_codec_cfg_matches_caps(UINT8 codec_id, const UINT8 *p_codec_caps, const UINT8 *p_codec_cfg)
{
FUNC_TRACE();
switch (codec_id) {
case BTC_AV_CODEC_SBC:
APPL_TRACE_EVENT("bta_av_co_audio_codec_cfg_matches_caps : min %d/%d max %d/%d",
p_codec_caps[BTA_AV_CO_SBC_MIN_BITPOOL_OFF],
p_codec_cfg[BTA_AV_CO_SBC_MIN_BITPOOL_OFF],
p_codec_caps[BTA_AV_CO_SBC_MAX_BITPOOL_OFF],
p_codec_cfg[BTA_AV_CO_SBC_MAX_BITPOOL_OFF]);
/* Must match all items exactly except bitpool boundaries which can be adjusted */
if (!((p_codec_caps[BTA_AV_CO_SBC_FREQ_CHAN_OFF] & p_codec_cfg[BTA_AV_CO_SBC_FREQ_CHAN_OFF]) &&
(p_codec_caps[BTA_AV_CO_SBC_BLOCK_BAND_OFF] & p_codec_cfg[BTA_AV_CO_SBC_BLOCK_BAND_OFF]))) {
APPL_TRACE_EVENT("FALSE %x %x %x %x",
p_codec_caps[BTA_AV_CO_SBC_FREQ_CHAN_OFF],
p_codec_cfg[BTA_AV_CO_SBC_FREQ_CHAN_OFF],
p_codec_caps[BTA_AV_CO_SBC_BLOCK_BAND_OFF],
p_codec_cfg[BTA_AV_CO_SBC_BLOCK_BAND_OFF]);
return FALSE;
}
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_codec_cfg_matches_caps: unsupported codec id %d", codec_id);
return FALSE;
break;
}
APPL_TRACE_EVENT("TRUE");
return TRUE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_codec_match
**
** Description Check if a codec capabilities supports the codec config
**
** Returns TRUE if the connection supports this codec, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_codec_match(const UINT8 *p_codec_caps)
{
FUNC_TRACE();
return bta_av_co_audio_codec_cfg_matches_caps(bta_av_co_cb.codec_cfg.id, p_codec_caps, bta_av_co_cb.codec_cfg.info);
}
/*******************************************************************************
**
** Function bta_av_co_audio_peer_reset_config
**
** Description Reset the peer codec configuration
**
** Returns Nothing
**
*******************************************************************************/
static void bta_av_co_audio_peer_reset_config(tBTA_AV_CO_PEER *p_peer)
{
FUNC_TRACE();
/* Indicate that there is no currently selected sink */
p_peer->p_snk = NULL;
}
/*******************************************************************************
**
** Function bta_av_co_cp_is_scmst
**
** Description Check if a content protection service is SCMS-T
**
** Returns TRUE if this CP is SCMS-T, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_cp_is_scmst(const UINT8 *p_protectinfo)
{
UINT16 cp_id;
FUNC_TRACE();
if (*p_protectinfo >= BTA_AV_CP_LOSC) {
p_protectinfo++;
STREAM_TO_UINT16(cp_id, p_protectinfo);
if (cp_id == BTA_AV_CP_SCMS_T_ID) {
APPL_TRACE_DEBUG("bta_av_co_cp_is_scmst: SCMS-T found");
return TRUE;
}
}
return FALSE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_sink_has_scmst
**
** Description Check if a sink supports SCMS-T
**
** Returns TRUE if the sink supports this CP, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_sink_has_scmst(const tBTA_AV_CO_SINK *p_sink)
{
UINT8 index;
const UINT8 *p;
FUNC_TRACE();
/* Check if sink supports SCMS-T */
index = p_sink->num_protect;
p = &p_sink->protect_info[0];
while (index) {
if (bta_av_co_cp_is_scmst(p)) {
return TRUE;
}
/* Move to the next SC */
p += *p + 1;
/* Decrement the SC counter */
index--;
}
APPL_TRACE_DEBUG("bta_av_co_audio_sink_has_scmst: SCMS-T not found");
return FALSE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_sink_supports_cp
**
** Description Check if a sink supports the current content protection
**
** Returns TRUE if the sink supports this CP, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_sink_supports_cp(const tBTA_AV_CO_SINK *p_sink)
{
FUNC_TRACE();
/* Check if content protection is enabled for this stream */
if (bta_av_co_cp_get_flag() != BTA_AV_CP_SCMS_COPY_FREE) {
return bta_av_co_audio_sink_has_scmst(p_sink);
} else {
APPL_TRACE_DEBUG("bta_av_co_audio_sink_supports_cp: not required");
return TRUE;
}
}
/*******************************************************************************
**
** Function bta_av_co_audio_peer_supports_codec
**
** Description Check if a connection supports the codec config
**
** Returns TRUE if the connection supports this codec, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_peer_supports_codec(tBTA_AV_CO_PEER *p_peer, UINT8 *p_snk_index)
{
int index;
UINT8 codec_type;
FUNC_TRACE();
/* Configure the codec type to look for */
codec_type = bta_av_co_cb.codec_cfg.id;
for (index = 0; index < p_peer->num_sup_snks; index++) {
if (p_peer->snks[index].codec_type == codec_type) {
switch (bta_av_co_cb.codec_cfg.id) {
case BTC_AV_CODEC_SBC:
if (p_snk_index) {
*p_snk_index = index;
}
return bta_av_co_audio_codec_match(p_peer->snks[index].codec_caps);
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_peer_supports_codec: unsupported codec id %d", bta_av_co_cb.codec_cfg.id);
return FALSE;
break;
}
}
}
return FALSE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_peer_src_supports_codec
**
** Description Check if a peer acting as src supports codec config
**
** Returns TRUE if the connection supports this codec, FALSE otherwise
**
*******************************************************************************/
static BOOLEAN bta_av_co_audio_peer_src_supports_codec(tBTA_AV_CO_PEER *p_peer, UINT8 *p_src_index)
{
int index;
UINT8 codec_type;
FUNC_TRACE();
/* Configure the codec type to look for */
codec_type = bta_av_co_cb.codec_cfg.id;
for (index = 0; index < p_peer->num_sup_srcs; index++) {
if (p_peer->srcs[index].codec_type == codec_type) {
switch (bta_av_co_cb.codec_cfg.id) {
case BTC_AV_CODEC_SBC:
if (p_src_index) {
*p_src_index = index;
}
if (0 == bta_av_sbc_cfg_matches_cap((UINT8 *)p_peer->srcs[index].codec_caps,
(tA2D_SBC_CIE *)&bta_av_co_sbc_sink_caps)) {
return TRUE;
}
break;
default:
APPL_TRACE_ERROR("peer_src_supports_codec: unsupported codec id %d",
bta_av_co_cb.codec_cfg.id);
return FALSE;
break;
}
}
}
return FALSE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_sink_supports_config
**
** Description Check if the media source supports a given configuration
**
** Returns TRUE if the media source supports this config, FALSE otherwise
**
*******************************************************************************/
static UINT8 bta_av_co_audio_sink_supports_config(UINT8 codec_type, const UINT8 *p_codec_cfg)
{
FUNC_TRACE();
UINT8 status = A2D_BAD_CODEC_TYPE;
switch (codec_type) {
case BTA_AV_CODEC_SBC:
status = bta_av_sbc_cfg_in_cap((UINT8 *)p_codec_cfg, (tA2D_SBC_CIE *)&bta_av_co_sbc_sink_caps);
break;
case BTA_AV_CODEC_M12:
case BTA_AV_CODEC_M24:
case BTA_AV_CODEC_ATRAC:
status = A2D_NS_CODEC_TYPE;
APPL_TRACE_ERROR("bta_av_co_audio_sink_supports_config unsupported codec type %d", codec_type);
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_sink_supports_config invalid codec type %d", codec_type);
break;
}
return status;
}
/*******************************************************************************
**
** Function bta_av_co_audio_media_supports_config
**
** Description Check if the media sink supports a given configuration
**
** Returns TRUE if the media source supports this config, FALSE otherwise
**
*******************************************************************************/
static UINT8 bta_av_co_audio_media_supports_config(UINT8 codec_type, const UINT8 *p_codec_cfg)
{
FUNC_TRACE();
UINT8 status = A2D_BAD_CODEC_TYPE;
switch (codec_type) {
case BTA_AV_CODEC_SBC:
status = bta_av_sbc_cfg_in_cap((UINT8 *)p_codec_cfg, (tA2D_SBC_CIE *)&bta_av_co_sbc_caps);
break;
case BTA_AV_CODEC_M12:
case BTA_AV_CODEC_M24:
case BTA_AV_CODEC_ATRAC:
status = A2D_NS_CODEC_TYPE;
APPL_TRACE_ERROR("bta_av_co_audio_media_supports_config unsupported codec type %d", codec_type);
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_media_supports_config invalid codec type %d", codec_type);
break;
}
return status;
}
/*******************************************************************************
**
** Function bta_av_co_audio_codec_supported
**
** Description Check if all opened connections are compatible with a codec
** configuration and content protection
**
** Returns TRUE if all opened devices support this codec, FALSE otherwise
**
*******************************************************************************/
BOOLEAN bta_av_co_audio_codec_supported(tBTC_AV_STATUS *p_status)
{
UINT8 index;
UINT8 snk_index;
tBTA_AV_CO_PEER *p_peer;
tBTA_AV_CO_SINK *p_sink;
UINT8 codec_cfg[AVDT_CODEC_SIZE];
UINT8 num_protect = 0;
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
BOOLEAN cp_active;
#endif
FUNC_TRACE();
APPL_TRACE_DEBUG("bta_av_co_audio_codec_supported");
/* Check AV feeding is supported */
*p_status = BTC_ERROR_SRV_AV_FEEDING_NOT_SUPPORTED;
for (index = 0; index < BTA_AV_CO_NUM_ELEMENTS(bta_av_co_cb.peers); index++) {
p_peer = &bta_av_co_cb.peers[index];
if (p_peer->opened) {
if (bta_av_co_audio_peer_supports_codec(p_peer, &snk_index)) {
p_sink = &p_peer->snks[snk_index];
/* Check that this sink is compatible with the CP */
if (!bta_av_co_audio_sink_supports_cp(p_sink)) {
APPL_TRACE_DEBUG("bta_av_co_audio_codec_supported sink %d of peer %d doesn't support cp",
snk_index, index);
*p_status = BTC_ERROR_SRV_AV_CP_NOT_SUPPORTED;
return FALSE;
}
/* Build the codec configuration for this sink */
if (bta_av_co_audio_codec_build_config(p_sink->codec_caps, codec_cfg)) {
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
/* Check if this sink supports SCMS */
cp_active = bta_av_co_audio_sink_has_scmst(p_sink);
#endif
/* Check if this is a new configuration (new sink or new config) */
if ((p_sink != p_peer->p_snk) ||
(memcmp(codec_cfg, p_peer->codec_cfg, AVDT_CODEC_SIZE))
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
|| (p_peer->cp_active != cp_active)
#endif
) {
/* Save the new configuration */
p_peer->p_snk = p_sink;
memcpy(p_peer->codec_cfg, codec_cfg, AVDT_CODEC_SIZE);
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
p_peer->cp_active = cp_active;
if (p_peer->cp_active) {
bta_av_co_cb.cp.active = TRUE;
num_protect = BTA_AV_CP_INFO_LEN;
} else {
bta_av_co_cb.cp.active = FALSE;
}
#endif
APPL_TRACE_DEBUG("bta_av_co_audio_codec_supported call BTA_AvReconfig(x%x)", BTA_AV_CO_AUDIO_INDX_TO_HNDL(index));
BTA_AvReconfig(BTA_AV_CO_AUDIO_INDX_TO_HNDL(index), TRUE, p_sink->sep_info_idx,
p_peer->codec_cfg, num_protect, (UINT8 *)bta_av_co_cp_scmst);
}
}
} else {
APPL_TRACE_DEBUG("bta_av_co_audio_codec_supported index %d doesn't support codec", index);
return FALSE;
}
}
}
*p_status = BTC_AV_SUCCESS;
return TRUE;
}
/*******************************************************************************
**
** Function bta_av_co_audio_codec_reset
**
** Description Reset the current codec configuration
**
** Returns void
**
*******************************************************************************/
void bta_av_co_audio_codec_reset(void)
{
osi_mutex_global_lock();
FUNC_TRACE();
/* Reset the current configuration to SBC */
bta_av_co_cb.codec_cfg.id = BTC_AV_CODEC_SBC;
if (A2D_BldSbcInfo(A2D_MEDIA_TYPE_AUDIO, (tA2D_SBC_CIE *)&btc_av_sbc_default_config, bta_av_co_cb.codec_cfg.info) != A2D_SUCCESS) {
APPL_TRACE_ERROR("bta_av_co_audio_codec_reset A2D_BldSbcInfo failed");
}
osi_mutex_global_unlock();
}
/*******************************************************************************
**
** Function bta_av_co_audio_set_codec
**
** Description Set the current codec configuration from the feeding type.
** This function is starting to modify the configuration, it
** should be protected.
**
** Returns TRUE if successful, FALSE otherwise
**
*******************************************************************************/
BOOLEAN bta_av_co_audio_set_codec(const tBTC_AV_MEDIA_FEEDINGS *p_feeding, tBTC_AV_STATUS *p_status)
{
tA2D_SBC_CIE sbc_config;
tBTC_AV_CODEC_INFO new_cfg;
FUNC_TRACE();
/* Check AV feeding is supported */
*p_status = BTC_ERROR_SRV_AV_FEEDING_NOT_SUPPORTED;
APPL_TRACE_DEBUG("bta_av_co_audio_set_codec cid=%d", p_feeding->format);
/* Supported codecs */
switch (p_feeding->format) {
case BTC_AV_CODEC_PCM:
new_cfg.id = BTC_AV_CODEC_SBC;
sbc_config = btc_av_sbc_default_config;
if ((p_feeding->cfg.pcm.num_channel != 1) &&
(p_feeding->cfg.pcm.num_channel != 2)) {
APPL_TRACE_ERROR("bta_av_co_audio_set_codec PCM channel number unsupported");
return FALSE;
}
if ((p_feeding->cfg.pcm.bit_per_sample != 8) &&
(p_feeding->cfg.pcm.bit_per_sample != 16)) {
APPL_TRACE_ERROR("bta_av_co_audio_set_codec PCM sample size unsupported");
return FALSE;
}
switch (p_feeding->cfg.pcm.sampling_freq) {
case 8000:
case 12000:
case 16000:
case 24000:
case 32000:
case 48000:
sbc_config.samp_freq = A2D_SBC_IE_SAMP_FREQ_48;
break;
case 11025:
case 22050:
case 44100:
sbc_config.samp_freq = A2D_SBC_IE_SAMP_FREQ_44;
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_set_codec PCM sampling frequency unsupported");
return FALSE;
break;
}
/* Build the codec config */
if (A2D_BldSbcInfo(A2D_MEDIA_TYPE_AUDIO, &sbc_config, new_cfg.info) != A2D_SUCCESS) {
APPL_TRACE_ERROR("bta_av_co_audio_set_codec A2D_BldSbcInfo failed");
return FALSE;
}
break;
default:
APPL_TRACE_ERROR("bta_av_co_audio_set_codec Feeding format unsupported");
return FALSE;
break;
}
/* The new config was correctly built */
bta_av_co_cb.codec_cfg = new_cfg;
/* Check all devices support it */
*p_status = BTC_AV_SUCCESS;
return bta_av_co_audio_codec_supported(p_status);
}
/*******************************************************************************
**
** Function bta_av_co_audio_get_sbc_config
**
** Description Retrieves the SBC codec configuration. If the codec in use
** is not SBC, return the default SBC codec configuration.
**
** Returns TRUE if codec is SBC, FALSE otherwise
**
*******************************************************************************/
BOOLEAN bta_av_co_audio_get_sbc_config(tA2D_SBC_CIE *p_sbc_config, UINT16 *p_minmtu)
{
BOOLEAN result = FALSE;
UINT8 index, jndex;
tBTA_AV_CO_PEER *p_peer;
tBTA_AV_CO_SINK *p_sink;
APPL_TRACE_EVENT("bta_av_co_cb.codec_cfg.id : codec 0x%x", bta_av_co_cb.codec_cfg.id);
/* Minimum MTU is by default very large */
*p_minmtu = 0xFFFF;
osi_mutex_global_lock();
if (bta_av_co_cb.codec_cfg.id == BTC_AV_CODEC_SBC) {
if (A2D_ParsSbcInfo(p_sbc_config, bta_av_co_cb.codec_cfg.info, FALSE) == A2D_SUCCESS) {
for (index = 0; index < BTA_AV_CO_NUM_ELEMENTS(bta_av_co_cb.peers); index++) {
p_peer = &bta_av_co_cb.peers[index];
if (p_peer->opened) {
if (p_peer->mtu < *p_minmtu) {
*p_minmtu = p_peer->mtu;
}
for (jndex = 0; jndex < p_peer->num_sup_snks; jndex++) {
p_sink = &p_peer->snks[jndex];
if (p_sink->codec_type == A2D_MEDIA_CT_SBC) {
/* Update the bitpool boundaries of the current config */
p_sbc_config->min_bitpool =
BTA_AV_CO_MAX(p_sink->codec_caps[BTA_AV_CO_SBC_MIN_BITPOOL_OFF],
p_sbc_config->min_bitpool);
p_sbc_config->max_bitpool =
BTA_AV_CO_MIN(p_sink->codec_caps[BTA_AV_CO_SBC_MAX_BITPOOL_OFF],
p_sbc_config->max_bitpool);
APPL_TRACE_EVENT("bta_av_co_audio_get_sbc_config : sink bitpool min %d, max %d",
p_sbc_config->min_bitpool, p_sbc_config->max_bitpool);
break;
}
}
}
}
result = TRUE;
}
}
if (!result) {
/* Not SBC, still return the default values */
*p_sbc_config = btc_av_sbc_default_config;
}
osi_mutex_global_unlock();
return result;
}
/*******************************************************************************
**
** Function bta_av_co_audio_discard_config
**
** Description Discard the codec configuration of a connection
**
** Returns Nothing
**
*******************************************************************************/
void bta_av_co_audio_discard_config(tBTA_AV_HNDL hndl)
{
tBTA_AV_CO_PEER *p_peer;
FUNC_TRACE();
/* Find the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_audio_discard_config could not find peer entry");
return;
}
/* Reset the peer codec configuration */
bta_av_co_audio_peer_reset_config(p_peer);
}
/*******************************************************************************
**
** Function bta_av_co_init
**
** Description Initialization
**
** Returns Nothing
**
*******************************************************************************/
void bta_av_co_init(void)
{
FUNC_TRACE();
/* Reset the control block */
memset(&bta_av_co_cb, 0, sizeof(bta_av_co_cb));
bta_av_co_cb.codec_cfg_setconfig.id = BTC_AV_CODEC_NONE;
#if defined(BTA_AV_CO_CP_SCMS_T) && (BTA_AV_CO_CP_SCMS_T == TRUE)
bta_av_co_cp_set_flag(BTA_AV_CP_SCMS_COPY_NEVER);
#else
bta_av_co_cp_set_flag(BTA_AV_CP_SCMS_COPY_FREE);
#endif
/* Reset the current config */
bta_av_co_audio_codec_reset();
}
/*******************************************************************************
**
** Function bta_av_co_peer_cp_supported
**
** Description Checks if the peer supports CP
**
** Returns TRUE if the peer supports CP
**
*******************************************************************************/
BOOLEAN bta_av_co_peer_cp_supported(tBTA_AV_HNDL hndl)
{
tBTA_AV_CO_PEER *p_peer;
tBTA_AV_CO_SINK *p_sink;
UINT8 index;
FUNC_TRACE();
/* Find the peer info */
p_peer = bta_av_co_get_peer(hndl);
if (p_peer == NULL) {
APPL_TRACE_ERROR("bta_av_co_peer_cp_supported could not find peer entry");
return FALSE;
}
for (index = 0; index < p_peer->num_sup_snks; index++) {
p_sink = &p_peer->snks[index];
if (p_sink->codec_type == A2D_MEDIA_CT_SBC) {
return bta_av_co_audio_sink_has_scmst(p_sink);
}
}
APPL_TRACE_ERROR("bta_av_co_peer_cp_supported did not find SBC sink");
return FALSE;
}
/*******************************************************************************
**
** Function bta_av_co_get_remote_bitpool_pref
**
** Description Check if remote side did a setconfig within the limits
** of our exported bitpool range. If set we will set the
** remote preference.
**
** Returns TRUE if config set, FALSE otherwize
**
*******************************************************************************/
BOOLEAN bta_av_co_get_remote_bitpool_pref(UINT8 *min, UINT8 *max)
{
/* check if remote peer did a set config */
if (bta_av_co_cb.codec_cfg_setconfig.id == BTC_AV_CODEC_NONE) {
return FALSE;
}
*min = bta_av_co_cb.codec_cfg_setconfig.info[BTA_AV_CO_SBC_MIN_BITPOOL_OFF];
*max = bta_av_co_cb.codec_cfg_setconfig.info[BTA_AV_CO_SBC_MAX_BITPOOL_OFF];
return TRUE;
}
/* the call out functions for audio stream */
const tBTA_AV_CO_FUNCTS bta_av_a2d_cos = {
bta_av_co_audio_init,
bta_av_co_audio_disc_res,
bta_av_co_audio_cfg_res,
bta_av_co_audio_getconfig,
bta_av_co_audio_setconfig,
bta_av_co_audio_open,
bta_av_co_audio_close,
bta_av_co_audio_start,
bta_av_co_audio_stop,
bta_av_co_audio_src_data_path,
bta_av_co_audio_delay
};
#endif /* #if BTC_AV_INCLUDED */
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