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Diffstat (limited to 'btif/src/btif_media_task.c')
| -rwxr-xr-x | btif/src/btif_media_task.c | 2287 |
1 files changed, 2287 insertions, 0 deletions
diff --git a/btif/src/btif_media_task.c b/btif/src/btif_media_task.c new file mode 100755 index 0000000..8978cf6 --- /dev/null +++ b/btif/src/btif_media_task.c @@ -0,0 +1,2287 @@ +/****************************************************************************** + * + * Copyright (C) 2009-2012 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. + * + ******************************************************************************/ + +/****************************************************************************** + ** + ** Name: btif_media_task.c + ** + ** Description: This is the multimedia module for the BTIF system. It + ** contains task implementations AV, HS and HF profiles + ** audio & video processing + ** + ******************************************************************************/ + +#include <string.h> +#include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> +#include <pthread.h> +#include <stdint.h> +#include <sys/time.h> + +#include "bt_target.h" +#include "gki.h" +#include "bta_api.h" +#include "btu.h" +#include "bta_sys.h" +#include "bta_sys_int.h" + +#include "bta_av_api.h" +#include "a2d_api.h" +#include "a2d_sbc.h" +#include "a2d_int.h" +#include "bta_av_sbc.h" +#include "bta_av_ci.h" +#include "l2c_api.h" + + +#include "btif_av_co.h" +#include "btif_media.h" + + +#if (BTA_AV_INCLUDED == TRUE) +#include "sbc_encoder.h" +#endif + +#define LOG_TAG "BTIF-MEDIA" + +#include <hardware/bluetooth.h> +#include "audio_a2dp_hw.h" +#include "btif_av.h" +#include "btif_sm.h" +#include "btif_util.h" +#include "bt_utils.h" + +/***************************************************************************** + ** Constants + *****************************************************************************/ + +//#define DEBUG_MEDIA_AV_FLOW TRUE + +/* BTIF media task gki event definition */ +#define BTIF_MEDIA_TASK_CMD TASK_MBOX_0_EVT_MASK +#define BTIF_MEDIA_TASK_DATA TASK_MBOX_1_EVT_MASK + +#define BTIF_MEDIA_TASK_KILL EVENT_MASK(GKI_SHUTDOWN_EVT) + +#define BTIF_MEDIA_AA_TASK_TIMER_ID TIMER_0 +#define BTIF_MEDIA_AV_TASK_TIMER_ID TIMER_1 +#define BTIF_MEDIA_AA_TASK_TIMER TIMER_0_EVT_MASK +#define BTIF_MEDIA_AV_TASK_TIMER TIMER_1_EVT_MASK + +#define BTIF_MEDIA_TASK_CMD_MBOX TASK_MBOX_0 /* cmd mailbox */ +#define BTIF_MEDIA_TASK_DATA_MBOX TASK_MBOX_1 /* data mailbox */ + +/* BTIF media cmd event definition : BTIF_MEDIA_TASK_CMD */ +enum +{ + BTIF_MEDIA_START_AA_TX = 1, + BTIF_MEDIA_STOP_AA_TX, + BTIF_MEDIA_AA_RX_RDY, + BTIF_MEDIA_UIPC_RX_RDY, + BTIF_MEDIA_SBC_ENC_INIT, + BTIF_MEDIA_SBC_ENC_UPDATE, + BTIF_MEDIA_SBC_DEC_INIT, + BTIF_MEDIA_VIDEO_DEC_INIT, + BTIF_MEDIA_FLUSH_AA_TX, + BTIF_MEDIA_FLUSH_AA_RX, + BTIF_MEDIA_AUDIO_FEEDING_INIT, + BTIF_MEDIA_AUDIO_RECEIVING_INIT +}; + +enum { + MEDIA_TASK_STATE_OFF = 0, + MEDIA_TASK_STATE_ON = 1, + MEDIA_TASK_STATE_SHUTTING_DOWN = 2 +}; + +/* Macro to multiply the media task tick */ +#ifndef BTIF_MEDIA_NUM_TICK +#define BTIF_MEDIA_NUM_TICK 1 +#endif + +/* Media task tick in milliseconds */ +#define BTIF_MEDIA_TIME_TICK (20 * BTIF_MEDIA_NUM_TICK) + +/* Number of frames per media task tick. + Configure value rounded up to closest integer and + adjust any deltas in btif_get_num_aa_frame */ + +/* 7.5 frames/tick @ 20 ms tick (every 2nd frame send one less) */ +#define BTIF_MEDIA_FR_PER_TICKS_48 (8 * BTIF_MEDIA_NUM_TICK) + +/* 6.89 frames/tick @ 20 ms tick (7 out of 64 frames send one less */ +#define BTIF_MEDIA_FR_PER_TICKS_44_1 (7 * BTIF_MEDIA_NUM_TICK) + +/* 5.0 frames/tick @ 20 ms tick */ +#define BTIF_MEDIA_FR_PER_TICKS_32 (5 * BTIF_MEDIA_NUM_TICK) + +/* 2.5 frames/tick @ 20 ms tick (every 2nd frame send one less) */ +#define BTIF_MEDIA_FR_PER_TICKS_16 (3 * BTIF_MEDIA_NUM_TICK) + + +/* buffer pool */ +#define BTIF_MEDIA_AA_POOL_ID GKI_POOL_ID_3 +#define BTIF_MEDIA_AA_BUF_SIZE GKI_BUF3_SIZE + +/* offset */ +#if (BTA_AV_CO_CP_SCMS_T == TRUE) +#define BTIF_MEDIA_AA_SBC_OFFSET (AVDT_MEDIA_OFFSET + BTA_AV_SBC_HDR_SIZE + 1) +#else +#define BTIF_MEDIA_AA_SBC_OFFSET (AVDT_MEDIA_OFFSET + BTA_AV_SBC_HDR_SIZE) +#endif + +/* Define the bitrate step when trying to match bitpool value */ +#ifndef BTIF_MEDIA_BITRATE_STEP +#define BTIF_MEDIA_BITRATE_STEP 5 +#endif + +/* Middle quality quality setting @ 44.1 khz */ +#define DEFAULT_SBC_BITRATE 229 + +#ifndef A2DP_MEDIA_TASK_STACK_SIZE +#define A2DP_MEDIA_TASK_STACK_SIZE 0x2000 /* In bytes */ +#endif + +#define A2DP_MEDIA_TASK_TASK_STR ((INT8 *) "A2DP-MEDIA") +static UINT32 a2dp_media_task_stack[(A2DP_MEDIA_TASK_STACK_SIZE + 3) / 4]; + +#define BT_MEDIA_TASK A2DP_MEDIA_TASK + +#define USEC_PER_SEC 1000000L +#define TPUT_STATS_INTERVAL_US (1000*1000) + +/* + * CONGESTION COMPENSATION CTRL :: + * + * Thus setting controls how many buffers we will hold in media task + * during temp link congestion. Together with the stack buffer queues + * it controls much temporary a2dp link congestion we can + * compensate for. It however also depends on the default run level of sinks + * jitterbuffers. Depending on type of sink this would vary. + * Ideally the (SRC) max tx buffer capacity should equal the sinks + * jitterbuffer runlevel including any intermediate buffers on the way + * towards the sinks codec. + */ + +/* fixme -- define this in pcm time instead of buffer count */ +/* fixme -- tune optimal value. For now set a large buffer capacity */ +#define MAX_OUTPUT_BUFFER_QUEUE_SZ 24 + +//#define BTIF_MEDIA_VERBOSE_ENABLED + +#ifdef BTIF_MEDIA_VERBOSE_ENABLED +#define VERBOSE(fmt, ...) \ + LogMsg( TRACE_CTRL_GENERAL | TRACE_LAYER_NONE | TRACE_ORG_APPL | \ + TRACE_TYPE_ERROR, fmt, ## __VA_ARGS__) +#else +#define VERBOSE(fmt, ...) +#endif + +/***************************************************************************** + ** Data types + *****************************************************************************/ + +typedef struct +{ + UINT32 aa_frame_counter; + INT32 aa_feed_counter; + INT32 aa_feed_residue; +} tBTIF_AV_MEDIA_FEEDINGS_PCM_STATE; + + +typedef union +{ + tBTIF_AV_MEDIA_FEEDINGS_PCM_STATE pcm; +} tBTIF_AV_MEDIA_FEEDINGS_STATE; + +typedef struct +{ +#if (BTA_AV_INCLUDED == TRUE) + BUFFER_Q TxAaQ; + BOOLEAN is_tx_timer; + UINT16 TxAaMtuSize; + UINT32 timestamp; + UINT8 TxTranscoding; + tBTIF_AV_FEEDING_MODE feeding_mode; + tBTIF_AV_MEDIA_FEEDINGS media_feeding; + tBTIF_AV_MEDIA_FEEDINGS_STATE media_feeding_state; + SBC_ENC_PARAMS encoder; + UINT8 busy_level; + void* av_sm_hdl; + UINT8 a2dp_cmd_pending; /* we can have max one command pending */ + BOOLEAN tx_flush; /* discards any outgoing data when true */ + BOOLEAN scaling_disabled; +#endif + +} tBTIF_MEDIA_CB; + +typedef struct { + int rx; + int rx_tot; + int tx; + int tx_tot; + int ts_prev_us; +} t_stat; + +/***************************************************************************** + ** Local data + *****************************************************************************/ + +static tBTIF_MEDIA_CB btif_media_cb; +static int media_task_running = MEDIA_TASK_STATE_OFF; + + +/***************************************************************************** + ** Local functions + *****************************************************************************/ + +static void btif_a2dp_data_cb(tUIPC_CH_ID ch_id, tUIPC_EVENT event); +static void btif_a2dp_ctrl_cb(tUIPC_CH_ID ch_id, tUIPC_EVENT event); +static void btif_a2dp_encoder_update(void); + +/***************************************************************************** + ** Externs + *****************************************************************************/ + +static void btif_media_task_handle_cmd(BT_HDR *p_msg); +static void btif_media_task_handle_media(BT_HDR *p_msg); + +#if (BTA_AV_INCLUDED == TRUE) +static void btif_media_send_aa_frame(void); +static void btif_media_task_feeding_state_reset(void); +static void btif_media_task_aa_start_tx(void); +static void btif_media_task_aa_stop_tx(void); +static void btif_media_task_enc_init(BT_HDR *p_msg); +static void btif_media_task_enc_update(BT_HDR *p_msg); +static void btif_media_task_audio_feeding_init(BT_HDR *p_msg); +static void btif_media_task_aa_tx_flush(BT_HDR *p_msg); +static void btif_media_aa_prep_2_send(UINT8 nb_frame); +#endif + + +/***************************************************************************** + ** Misc helper functions + *****************************************************************************/ + +static void tput_mon(int is_rx, int len, int reset) +{ + /* only monitor one connection at a time for now */ + static t_stat cur_stat; + struct timespec now; + unsigned int prev_us; + unsigned int now_us; + + if (reset == TRUE) + { + memset(&cur_stat, 0, sizeof(t_stat)); + return; + } + + if (is_rx) + { + cur_stat.rx+=len; + cur_stat.rx_tot+=len; + } + else + { + cur_stat.tx+=len; + cur_stat.tx_tot+=len; + } + clock_gettime(CLOCK_MONOTONIC, &now); + + now_us = now.tv_sec*USEC_PER_SEC + now.tv_nsec/1000; + + //APPL_TRACE_DEBUG1("%d us", now_us - cur_stat.ts_prev_us); + + if ((now_us - cur_stat.ts_prev_us) < TPUT_STATS_INTERVAL_US) + return; + + APPL_TRACE_WARNING4("tput rx:%d, tx:%d (kB/s) (tot : rx %d, tx %d bytes)", + (cur_stat.rx)/((now_us - cur_stat.ts_prev_us)/1000), + (cur_stat.tx)/((now_us - cur_stat.ts_prev_us)/1000), + cur_stat.rx_tot, cur_stat.tx_tot); + + /* stats dumped. now reset stats for next interval */ + cur_stat.rx = 0; + cur_stat.tx = 0; + cur_stat.ts_prev_us = now_us; +} + + +static void log_tstamps_us(char *comment) +{ + #define USEC_PER_SEC 1000000L + static struct timespec prev = {0, 0}; + struct timespec now, diff; + unsigned int diff_us = 0; + unsigned int now_us = 0; + + clock_gettime(CLOCK_MONOTONIC, &now); + now_us = now.tv_sec*USEC_PER_SEC + now.tv_nsec/1000; + diff_us = (now.tv_sec - prev.tv_sec) * USEC_PER_SEC + (now.tv_nsec - prev.tv_nsec)/1000; + + APPL_TRACE_DEBUG4("[%s] ts %08d, diff : %08d, queue sz %d", comment, now_us, diff_us, + btif_media_cb.TxAaQ.count); + + prev = now; +} + +const char* dump_media_event(UINT16 event) +{ + switch(event) + { + CASE_RETURN_STR(BTIF_MEDIA_START_AA_TX) + CASE_RETURN_STR(BTIF_MEDIA_STOP_AA_TX) + CASE_RETURN_STR(BTIF_MEDIA_AA_RX_RDY) + CASE_RETURN_STR(BTIF_MEDIA_UIPC_RX_RDY) + CASE_RETURN_STR(BTIF_MEDIA_SBC_ENC_INIT) + CASE_RETURN_STR(BTIF_MEDIA_SBC_ENC_UPDATE) + CASE_RETURN_STR(BTIF_MEDIA_SBC_DEC_INIT) + CASE_RETURN_STR(BTIF_MEDIA_VIDEO_DEC_INIT) + CASE_RETURN_STR(BTIF_MEDIA_FLUSH_AA_TX) + CASE_RETURN_STR(BTIF_MEDIA_FLUSH_AA_RX) + CASE_RETURN_STR(BTIF_MEDIA_AUDIO_FEEDING_INIT) + CASE_RETURN_STR(BTIF_MEDIA_AUDIO_RECEIVING_INIT) + + default: + return "UNKNOWN MEDIA EVENT"; + } +} + +/***************************************************************************** + ** A2DP CTRL PATH + *****************************************************************************/ + +static const char* dump_a2dp_ctrl_event(UINT8 event) +{ + switch(event) + { + CASE_RETURN_STR(A2DP_CTRL_CMD_NONE) + CASE_RETURN_STR(A2DP_CTRL_CMD_CHECK_READY) + CASE_RETURN_STR(A2DP_CTRL_CMD_START) + CASE_RETURN_STR(A2DP_CTRL_CMD_STOP) + CASE_RETURN_STR(A2DP_CTRL_CMD_SUSPEND) + default: + return "UNKNOWN MSG ID"; + } +} + +static void btif_audiopath_detached(void) +{ + APPL_TRACE_EVENT0("## AUDIO PATH DETACHED ##"); + + /* send stop request only if we are actively streaming and haven't received + a stop request. Potentially audioflinger detached abnormally */ + if (btif_media_cb.is_tx_timer) + { + /* post stop event and wait for audio path to stop */ + btif_dispatch_sm_event(BTIF_AV_STOP_STREAM_REQ_EVT, NULL, 0); + } +} + +static void a2dp_cmd_acknowledge(int status) +{ + UINT8 ack = status; + + APPL_TRACE_EVENT2("## a2dp ack : %s, status %d ##", dump_a2dp_ctrl_event(btif_media_cb.a2dp_cmd_pending), status); + + /* sanity check */ + if (btif_media_cb.a2dp_cmd_pending == A2DP_CTRL_CMD_NONE) + { + APPL_TRACE_ERROR0("warning : no command pending, ignore ack"); + return; + } + + /* clear pending */ + btif_media_cb.a2dp_cmd_pending = A2DP_CTRL_CMD_NONE; + + /* acknowledge start request */ + UIPC_Send(UIPC_CH_ID_AV_CTRL, 0, &ack, 1); +} + + +static void btif_recv_ctrl_data(void) +{ + UINT8 cmd = 0; + int n; + + n = UIPC_Read(UIPC_CH_ID_AV_CTRL, NULL, &cmd, 1); + + /* detach on ctrl channel means audioflinger process was terminated */ + if (n == 0) + { + APPL_TRACE_EVENT0("CTRL CH DETACHED"); + UIPC_Close(UIPC_CH_ID_AV_CTRL); + /* we can operate only on datachannel, if af client wants to + do send additional commands the ctrl channel would be reestablished */ + //btif_audiopath_detached(); + return; + } + + APPL_TRACE_DEBUG1("a2dp-ctrl-cmd : %s", dump_a2dp_ctrl_event(cmd)); + + btif_media_cb.a2dp_cmd_pending = cmd; + + switch(cmd) + { + case A2DP_CTRL_CMD_CHECK_READY: + + if (media_task_running == MEDIA_TASK_STATE_SHUTTING_DOWN) + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + return; + } + + /* check whether av is ready to setup a2dp datapath */ + if ((btif_av_stream_ready() == TRUE) || (btif_av_stream_started_ready() == TRUE)) + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + } + else + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + } + break; + + case A2DP_CTRL_CMD_START: + + if (btif_av_stream_ready() == TRUE) + { + /* setup audio data channel listener */ + UIPC_Open(UIPC_CH_ID_AV_AUDIO, btif_a2dp_data_cb); + + /* post start event and wait for audio path to open */ + btif_dispatch_sm_event(BTIF_AV_START_STREAM_REQ_EVT, NULL, 0); + } + else if (btif_av_stream_started_ready()) + { + /* already started, setup audio data channel listener + and ack back immediately */ + UIPC_Open(UIPC_CH_ID_AV_AUDIO, btif_a2dp_data_cb); + + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + } + else + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + break; + } + break; + + case A2DP_CTRL_CMD_STOP: + + if (btif_media_cb.is_tx_timer == FALSE) + { + /* we are already stopped, just ack back */ + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + break; + } + + btif_dispatch_sm_event(BTIF_AV_STOP_STREAM_REQ_EVT, NULL, 0); + break; + + case A2DP_CTRL_CMD_SUSPEND: + /* local suspend */ + if (btif_av_stream_started_ready()) + { + btif_dispatch_sm_event(BTIF_AV_SUSPEND_STREAM_REQ_EVT, NULL, 0); + } + else + { + /* if we are not in started state, just ack back ok and let + audioflinger close the channel. This can happen if we are + remotely suspended */ + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + } + break; + + default: + APPL_TRACE_ERROR1("UNSUPPORTED CMD (%d)", cmd); + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + break; + } + APPL_TRACE_DEBUG1("a2dp-ctrl-cmd : %s DONE", dump_a2dp_ctrl_event(cmd)); +} + +static void btif_a2dp_ctrl_cb(tUIPC_CH_ID ch_id, tUIPC_EVENT event) +{ + APPL_TRACE_DEBUG1("A2DP-CTRL-CHANNEL EVENT %s", dump_uipc_event(event)); + + switch(event) + { + case UIPC_OPEN_EVT: + /* fetch av statemachine handle */ + btif_media_cb.av_sm_hdl = btif_av_get_sm_handle(); + break; + + case UIPC_CLOSE_EVT: + /* restart ctrl server unless we are shutting down */ + if (media_task_running == MEDIA_TASK_STATE_ON) + UIPC_Open(UIPC_CH_ID_AV_CTRL , btif_a2dp_ctrl_cb); + break; + + case UIPC_RX_DATA_READY_EVT: + btif_recv_ctrl_data(); + break; + + default : + APPL_TRACE_ERROR1("### A2DP-CTRL-CHANNEL EVENT %d NOT HANDLED ###", event); + break; + } +} + +static void btif_a2dp_data_cb(tUIPC_CH_ID ch_id, tUIPC_EVENT event) +{ + APPL_TRACE_DEBUG1("BTIF MEDIA (A2DP-DATA) EVENT %s", dump_uipc_event(event)); + + switch(event) + { + case UIPC_OPEN_EVT: + + /* read directly from media task from here on (keep callback for + connection events */ + UIPC_Ioctl(UIPC_CH_ID_AV_AUDIO, UIPC_REG_REMOVE_ACTIVE_READSET, NULL); + + /* Start the media task to encode SBC */ + btif_media_task_start_aa_req(); + + /* make sure we update any changed sbc encoder params */ + btif_a2dp_encoder_update(); + + /* ack back when media task is fully started */ + break; + + case UIPC_CLOSE_EVT: + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + btif_audiopath_detached(); + break; + + default : + APPL_TRACE_ERROR1("### A2DP-DATA EVENT %d NOT HANDLED ###", event); + break; + } +} + + +/***************************************************************************** + ** BTIF ADAPTATION + *****************************************************************************/ + +static void btif_a2dp_encoder_init(void) +{ + UINT16 minmtu; + tBTIF_MEDIA_INIT_AUDIO msg; + tA2D_SBC_CIE sbc_config; + + /* lookup table for converting channel mode */ + UINT16 codec_mode_tbl[5] = { SBC_JOINT_STEREO, SBC_STEREO, SBC_DUAL, 0, SBC_MONO }; + + /* lookup table for converting number of blocks */ + UINT16 codec_block_tbl[5] = { 16, 12, 8, 0, 4 }; + + /* lookup table to convert freq */ + UINT16 freq_block_tbl[5] = { SBC_sf48000, SBC_sf44100, SBC_sf32000, 0, SBC_sf16000 }; + + APPL_TRACE_DEBUG0("btif_a2dp_encoder_init"); + + /* Retrieve the current SBC configuration (default if currently not used) */ + bta_av_co_audio_get_sbc_config(&sbc_config, &minmtu); + msg.NumOfSubBands = (sbc_config.num_subbands == A2D_SBC_IE_SUBBAND_4) ? 4 : 8; + msg.NumOfBlocks = codec_block_tbl[sbc_config.block_len >> 5]; + msg.AllocationMethod = (sbc_config.alloc_mthd == A2D_SBC_IE_ALLOC_MD_L) ? SBC_LOUDNESS : SBC_SNR; + msg.ChannelMode = codec_mode_tbl[sbc_config.ch_mode >> 1]; + msg.SamplingFreq = freq_block_tbl[sbc_config.samp_freq >> 5]; + msg.MtuSize = minmtu; + + APPL_TRACE_EVENT1("msg.ChannelMode %x", msg.ChannelMode); + + /* Init the media task to encode SBC properly */ + btif_media_task_enc_init_req(&msg); +} + +static void btif_a2dp_encoder_update(void) +{ + UINT16 minmtu; + tA2D_SBC_CIE sbc_config; + tBTIF_MEDIA_UPDATE_AUDIO msg; + UINT8 pref_min; + UINT8 pref_max; + + APPL_TRACE_DEBUG0("btif_a2dp_encoder_update"); + + /* Retrieve the current SBC configuration (default if currently not used) */ + bta_av_co_audio_get_sbc_config(&sbc_config, &minmtu); + + APPL_TRACE_DEBUG4("btif_a2dp_encoder_update: Common min_bitpool:%d(0x%x) max_bitpool:%d(0x%x)", + sbc_config.min_bitpool, sbc_config.min_bitpool, + sbc_config.max_bitpool, sbc_config.max_bitpool); + + if (sbc_config.min_bitpool > sbc_config.max_bitpool) + { + APPL_TRACE_ERROR0("btif_a2dp_encoder_update: ERROR btif_a2dp_encoder_update min_bitpool > max_bitpool"); + } + + /* check if remote sink has a preferred bitpool range */ + if (bta_av_co_get_remote_bitpool_pref(&pref_min, &pref_max) == TRUE) + { + /* adjust our preferred bitpool with the remote preference if within + our capable range */ + + if (pref_min < sbc_config.min_bitpool) + pref_min = sbc_config.min_bitpool; + + if (pref_max > sbc_config.max_bitpool) + pref_max = sbc_config.max_bitpool; + + msg.MinBitPool = pref_min; + msg.MaxBitPool = pref_max; + + if ((pref_min != sbc_config.min_bitpool) || (pref_max != sbc_config.max_bitpool)) + { + APPL_TRACE_EVENT2("## adjusted our bitpool range to peer pref [%d:%d] ##", + pref_min, pref_max); + } + } + else + { + msg.MinBitPool = sbc_config.min_bitpool; + msg.MaxBitPool = sbc_config.max_bitpool; + } + + msg.MinMtuSize = minmtu; + + /* Update the media task to encode SBC properly */ + btif_media_task_enc_update_req(&msg); +} + + +/***************************************************************************** +** +** Function btif_a2dp_start_media_task +** +** Description +** +** Returns +** +*******************************************************************************/ + +int btif_a2dp_start_media_task(void) +{ + int retval; + + if (media_task_running != MEDIA_TASK_STATE_OFF) + { + APPL_TRACE_ERROR0("warning : media task already running"); + return GKI_FAILURE; + } + + APPL_TRACE_EVENT0("## A2DP START MEDIA TASK ##"); + + /* start a2dp media task */ + retval = GKI_create_task((TASKPTR)btif_media_task, A2DP_MEDIA_TASK, + A2DP_MEDIA_TASK_TASK_STR, + (UINT16 *) ((UINT8 *)a2dp_media_task_stack + A2DP_MEDIA_TASK_STACK_SIZE), + sizeof(a2dp_media_task_stack)); + + if (retval != GKI_SUCCESS) + return retval; + + /* wait for task to come up to sure we are able to send messages to it */ + while (media_task_running == MEDIA_TASK_STATE_OFF) + usleep(10); + + APPL_TRACE_EVENT0("## A2DP MEDIA TASK STARTED ##"); + + return retval; +} + +/***************************************************************************** +** +** Function btif_a2dp_stop_media_task +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_stop_media_task(void) +{ + APPL_TRACE_EVENT0("## A2DP STOP MEDIA TASK ##"); + GKI_destroy_task(BT_MEDIA_TASK); +} + +/***************************************************************************** +** +** Function btif_a2dp_on_init +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_init(void) +{ + //tput_mon(1, 0, 1); +} + + +/***************************************************************************** +** +** Function btif_a2dp_setup_codec +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_setup_codec(void) +{ + tBTIF_AV_MEDIA_FEEDINGS media_feeding; + tBTIF_STATUS status; + + APPL_TRACE_EVENT0("## A2DP SETUP CODEC ##"); + + GKI_disable(); + + /* for now hardcode 44.1 khz 16 bit stereo */ + media_feeding.cfg.pcm.sampling_freq = 44100; + media_feeding.cfg.pcm.bit_per_sample = 16; + media_feeding.cfg.pcm.num_channel = 2; + media_feeding.format = BTIF_AV_CODEC_PCM; + + if (bta_av_co_audio_set_codec(&media_feeding, &status)) + { + tBTIF_MEDIA_INIT_AUDIO_FEEDING mfeed; + + /* Init the encoding task */ + btif_a2dp_encoder_init(); + + /* Build the media task configuration */ + mfeed.feeding = media_feeding; + mfeed.feeding_mode = BTIF_AV_FEEDING_ASYNCHRONOUS; + /* Send message to Media task to configure transcoding */ + btif_media_task_audio_feeding_init_req(&mfeed); + } + + GKI_enable(); +} + + +/***************************************************************************** +** +** Function btif_a2dp_on_idle +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_idle(void) +{ + APPL_TRACE_EVENT0("## ON A2DP IDLE ##"); + + /* Make sure media task is stopped */ + btif_media_task_stop_aa_req(); + + bta_av_co_init(); +} + +/***************************************************************************** +** +** Function btif_a2dp_on_open +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_open(void) +{ + APPL_TRACE_EVENT0("## ON A2DP OPEN ##"); + + /* always use callback to notify socket events */ + UIPC_Open(UIPC_CH_ID_AV_AUDIO, btif_a2dp_data_cb); +} + +/***************************************************************************** +** +** Function btif_a2dp_on_started +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_started(tBTA_AV_START *p_av) +{ + tBTIF_AV_MEDIA_FEEDINGS media_feeding; + tBTIF_STATUS status; + + APPL_TRACE_EVENT0("## ON A2DP STARTED ##"); + + if (p_av->status == BTA_AV_SUCCESS) + { + if (p_av->suspending == FALSE) + { + if (p_av->initiator) + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_SUCCESS); + } + else + { + /* we were remotely started, make sure codec + is setup before datapath is started */ + btif_a2dp_setup_codec(); + } + + /* media task is autostarted upon a2dp audiopath connection */ + } + } + else + { + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + } +} + + +/***************************************************************************** +** +** Function btif_a2dp_on_stopped +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_stopped(tBTA_AV_SUSPEND *p_av) +{ + APPL_TRACE_EVENT0("## ON A2DP STOPPED ##"); + + /* allow using this api for other than suspend */ + if (p_av != NULL) + { + if (p_av->status != BTA_AV_SUCCESS) + { + APPL_TRACE_EVENT1("AV STOP FAILED (%d)", p_av->status); + + if (p_av->initiator) + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + return; + } + } + + /* ensure tx frames are immediately suspended */ + btif_media_cb.tx_flush = 1; + + /* request to stop media task */ + btif_media_task_aa_tx_flush_req(); + btif_media_task_stop_aa_req(); + + /* once stream is fully stopped we will ack back */ +} + + +/***************************************************************************** +** +** Function btif_a2dp_on_suspended +** +** Description +** +** Returns +** +*******************************************************************************/ + +void btif_a2dp_on_suspended(tBTA_AV_SUSPEND *p_av) +{ + APPL_TRACE_EVENT0("## ON A2DP SUSPENDED ##"); + + /* check for status failures */ + if (p_av->status != BTA_AV_SUCCESS) + { + if (p_av->initiator == TRUE) + a2dp_cmd_acknowledge(A2DP_CTRL_ACK_FAILURE); + } + + /* once stream is fully stopped we will ack back */ + + /* ensure tx frames are immediately flushed */ + btif_media_cb.tx_flush = 1; + + /* stop timer tick */ + btif_media_task_stop_aa_req(); +} + +/* when true media task discards any tx frames */ +void btif_a2dp_set_tx_flush(BOOLEAN enable) +{ + APPL_TRACE_EVENT1("## DROP TX %d ##", enable); + btif_media_cb.tx_flush = enable; +} + +/***************************************************************************** +** +** Function btif_calc_pcmtime +** +** Description Calculates the pcmtime equivalent of a datapacket +** +** Returns microseconds +** +*******************************************************************************/ + +static int btif_calc_pcmtime(UINT32 bytes_processed) +{ + int pcm_time_us = 0; + tBTIF_AV_MEDIA_FEED_CFG *p_cfg; + + p_cfg = &btif_media_cb.media_feeding.cfg; + + /* calculate corresponding pcm time based on data processed */ + switch(btif_media_cb.media_feeding.format) + { + case BTIF_AV_CODEC_PCM: + pcm_time_us = (bytes_processed*1000000)/ + (p_cfg->pcm.num_channel*p_cfg->pcm.sampling_freq*p_cfg->pcm.bit_per_sample/8); + break; + + default : + APPL_TRACE_ERROR1("mediafeeding format invalid : %d", btif_media_cb.media_feeding.format); + break; + } + + return pcm_time_us; +} + + +/******************************************************************************* + ** + ** Function btif_media_task_aa_handle_timer + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ + +static void btif_media_task_aa_handle_timer(void) +{ +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + static UINT16 Debug = 0; + APPL_TRACE_DEBUG1("btif_media_task_aa_handle_timer: %d", Debug++); +#endif + + log_tstamps_us("media task tx timer"); + +#if (BTA_AV_INCLUDED == TRUE) + btif_media_send_aa_frame(); +#endif +} + +#if (BTA_AV_INCLUDED == TRUE) +/******************************************************************************* + ** + ** Function btif_media_task_aa_handle_timer + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_aa_handle_uipc_rx_rdy(void) +{ +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + static UINT16 Debug = 0; + APPL_TRACE_DEBUG1("btif_media_task_aa_handle_uipc_rx_rdy: %d", Debug++); +#endif + + /* process all the UIPC data */ + btif_media_aa_prep_2_send(0xFF); + + /* send it */ + VERBOSE("btif_media_task_aa_handle_uipc_rx_rdy calls bta_av_ci_src_data_ready"); + bta_av_ci_src_data_ready(BTA_AV_CHNL_AUDIO); +} +#endif + +/******************************************************************************* + ** + ** Function btif_media_task_init + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ + +void btif_media_task_init(void) +{ + memset(&(btif_media_cb), 0, sizeof(btif_media_cb)); + + UIPC_Init(NULL); + +#if (BTA_AV_INCLUDED == TRUE) + UIPC_Open(UIPC_CH_ID_AV_CTRL , btif_a2dp_ctrl_cb); +#endif + + +} +/******************************************************************************* + ** + ** Function btif_media_task + ** + ** Description Task for SBC encoder. This task receives an + ** event when the waveIn interface has a pcm data buffer + ** ready. On receiving the event, handle all ready pcm + ** data buffers. If stream is started, run the SBC encoder + ** on each chunk of pcm samples and build an output packet + ** consisting of one or more encoded SBC frames. + ** + ** Returns void + ** + *******************************************************************************/ +int btif_media_task(void *p) +{ + UINT16 event; + BT_HDR *p_msg; + + VERBOSE("================ MEDIA TASK STARTING ================"); + + btif_media_task_init(); + + media_task_running = MEDIA_TASK_STATE_ON; + + raise_priority_a2dp(TASK_HIGH_MEDIA); + + while (1) + { + event = GKI_wait(0xffff, 0); + + VERBOSE("================= MEDIA TASK EVENT %d ===============", event); + + if (event & BTIF_MEDIA_TASK_CMD) + { + /* Process all messages in the queue */ + while ((p_msg = (BT_HDR *) GKI_read_mbox(BTIF_MEDIA_TASK_CMD_MBOX)) != NULL) + { + btif_media_task_handle_cmd(p_msg); + } + } + + if (event & BTIF_MEDIA_TASK_DATA) + { + /* Process all messages in the queue */ + while ((p_msg = (BT_HDR *) GKI_read_mbox(BTIF_MEDIA_TASK_DATA_MBOX)) != NULL) + { + btif_media_task_handle_media(p_msg); + } + } + + if (event & BTIF_MEDIA_AA_TASK_TIMER) + { + /* advance audio timer expiration */ + btif_media_task_aa_handle_timer(); + } + + + VERBOSE("=============== MEDIA TASK EVENT %d DONE ============", event); + + /* When we get this event we exit the task - should only happen on GKI_shutdown */ + if (event & BTIF_MEDIA_TASK_KILL) + { + /* make sure no channels are restarted while shutting down */ + media_task_running = MEDIA_TASK_STATE_SHUTTING_DOWN; + + /* this calls blocks until uipc is fully closed */ + UIPC_Close(UIPC_CH_ID_ALL); + break; + } + } + + /* Clear media task flag */ + media_task_running = MEDIA_TASK_STATE_OFF; + + APPL_TRACE_DEBUG0("MEDIA TASK EXITING"); + + return 0; +} + + +/******************************************************************************* + ** + ** Function btif_media_task_send_cmd_evt + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_send_cmd_evt(UINT16 Evt) +{ + BT_HDR *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(BT_HDR)))) + { + return FALSE; + } + + p_buf->event = Evt; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_flush_q + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_flush_q(BUFFER_Q *p_q) +{ + while (GKI_IS_QUEUE_EMPTY(p_q) == FALSE) + { + GKI_freebuf(GKI_dequeue(p_q)); + } +} + + +/******************************************************************************* + ** + ** Function btif_media_task_handle_cmd + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_handle_cmd(BT_HDR *p_msg) +{ + VERBOSE("btif_media_task_handle_cmd : %d %s", p_msg->event, dump_media_event(p_msg->event)); + + switch (p_msg->event) + { +#if (BTA_AV_INCLUDED == TRUE) + case BTIF_MEDIA_START_AA_TX: + btif_media_task_aa_start_tx(); + break; + case BTIF_MEDIA_STOP_AA_TX: + btif_media_task_aa_stop_tx(); + break; + case BTIF_MEDIA_SBC_ENC_INIT: + btif_media_task_enc_init(p_msg); + break; + case BTIF_MEDIA_SBC_ENC_UPDATE: + btif_media_task_enc_update(p_msg); + break; + case BTIF_MEDIA_AUDIO_FEEDING_INIT: + btif_media_task_audio_feeding_init(p_msg); + break; + case BTIF_MEDIA_FLUSH_AA_TX: + btif_media_task_aa_tx_flush(p_msg); + break; + case BTIF_MEDIA_UIPC_RX_RDY: + btif_media_task_aa_handle_uipc_rx_rdy(); + break; +#endif + default: + APPL_TRACE_ERROR1("ERROR in btif_media_task_handle_cmd unknown event %d", p_msg->event); + } + GKI_freebuf(p_msg); + VERBOSE("btif_media_task_handle_cmd : %s DONE", dump_media_event(p_msg->event)); +} + +/******************************************************************************* + ** + ** Function btif_media_task_handle_media + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_handle_media(BT_HDR *p_msg) +{ + APPL_TRACE_ERROR0("ERROR btif_media_task_handle_media: not in use"); + + GKI_freebuf(p_msg); +} + + + + +#if (BTA_AV_INCLUDED == TRUE) +/******************************************************************************* + ** + ** Function btif_media_task_enc_init_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_enc_init_req(tBTIF_MEDIA_INIT_AUDIO *p_msg) +{ + tBTIF_MEDIA_INIT_AUDIO *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(tBTIF_MEDIA_INIT_AUDIO)))) + { + return FALSE; + } + + memcpy(p_buf, p_msg, sizeof(tBTIF_MEDIA_INIT_AUDIO)); + p_buf->hdr.event = BTIF_MEDIA_SBC_ENC_INIT; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_enc_update_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_enc_update_req(tBTIF_MEDIA_UPDATE_AUDIO *p_msg) +{ + tBTIF_MEDIA_UPDATE_AUDIO *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(tBTIF_MEDIA_UPDATE_AUDIO)))) + { + return FALSE; + } + + memcpy(p_buf, p_msg, sizeof(tBTIF_MEDIA_UPDATE_AUDIO)); + p_buf->hdr.event = BTIF_MEDIA_SBC_ENC_UPDATE; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_audio_feeding_init_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_audio_feeding_init_req(tBTIF_MEDIA_INIT_AUDIO_FEEDING *p_msg) +{ + tBTIF_MEDIA_INIT_AUDIO_FEEDING *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(tBTIF_MEDIA_INIT_AUDIO_FEEDING)))) + { + return FALSE; + } + + memcpy(p_buf, p_msg, sizeof(tBTIF_MEDIA_INIT_AUDIO_FEEDING)); + p_buf->hdr.event = BTIF_MEDIA_AUDIO_FEEDING_INIT; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_start_aa_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_start_aa_req(void) +{ + BT_HDR *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(BT_HDR)))) + { + APPL_TRACE_EVENT0("GKI failed"); + return FALSE; + } + + p_buf->event = BTIF_MEDIA_START_AA_TX; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_stop_aa_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_stop_aa_req(void) +{ + BT_HDR *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(BT_HDR)))) + { + return FALSE; + } + + p_buf->event = BTIF_MEDIA_STOP_AA_TX; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_aa_tx_flush_req + ** + ** Description + ** + ** Returns TRUE is success + ** + *******************************************************************************/ +BOOLEAN btif_media_task_aa_tx_flush_req(void) +{ + BT_HDR *p_buf; + if (NULL == (p_buf = GKI_getbuf(sizeof(BT_HDR)))) + { + return FALSE; + } + + p_buf->event = BTIF_MEDIA_FLUSH_AA_TX; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_buf); + return TRUE; +} + +/******************************************************************************* + ** + ** Function btif_media_task_aa_tx_flush + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_aa_tx_flush(BT_HDR *p_msg) +{ + /* Flush all enqueued GKI music buffers (encoded) */ + APPL_TRACE_DEBUG0("btif_media_task_aa_tx_flush"); + + btif_media_flush_q(&(btif_media_cb.TxAaQ)); + + UIPC_Ioctl(UIPC_CH_ID_AV_AUDIO, UIPC_REQ_RX_FLUSH, NULL); +} + +/******************************************************************************* + ** + ** Function btif_media_task_enc_init + ** + ** Description Initialize encoding task + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_enc_init(BT_HDR *p_msg) +{ + tBTIF_MEDIA_INIT_AUDIO *pInitAudio = (tBTIF_MEDIA_INIT_AUDIO *) p_msg; + + APPL_TRACE_DEBUG0("btif_media_task_enc_init"); + + btif_media_cb.timestamp = 0; + + /* SBC encoder config (enforced even if not used) */ + btif_media_cb.encoder.s16ChannelMode = pInitAudio->ChannelMode; + btif_media_cb.encoder.s16NumOfSubBands = pInitAudio->NumOfSubBands; + btif_media_cb.encoder.s16NumOfBlocks = pInitAudio->NumOfBlocks; + btif_media_cb.encoder.s16AllocationMethod = pInitAudio->AllocationMethod; + btif_media_cb.encoder.s16SamplingFreq = pInitAudio->SamplingFreq; + + btif_media_cb.encoder.u16BitRate = DEFAULT_SBC_BITRATE; + /* Default transcoding is PCM to SBC, modified by feeding configuration */ + btif_media_cb.TxTranscoding = BTIF_MEDIA_TRSCD_PCM_2_SBC; + btif_media_cb.TxAaMtuSize = ((BTIF_MEDIA_AA_BUF_SIZE-BTIF_MEDIA_AA_SBC_OFFSET-sizeof(BT_HDR)) + < pInitAudio->MtuSize) ? (BTIF_MEDIA_AA_BUF_SIZE - BTIF_MEDIA_AA_SBC_OFFSET + - sizeof(BT_HDR)) : pInitAudio->MtuSize; + + APPL_TRACE_EVENT3("btif_media_task_enc_init busy %d, mtu %d, peer mtu %d", + btif_media_cb.busy_level, btif_media_cb.TxAaMtuSize, pInitAudio->MtuSize); + APPL_TRACE_EVENT6(" ch mode %d, subnd %d, nb blk %d, alloc %d, rate %d, freq %d", + btif_media_cb.encoder.s16ChannelMode, btif_media_cb.encoder.s16NumOfSubBands, + btif_media_cb.encoder.s16NumOfBlocks, + btif_media_cb.encoder.s16AllocationMethod, btif_media_cb.encoder.u16BitRate, + btif_media_cb.encoder.s16SamplingFreq); + + /* Reset entirely the SBC encoder */ + SBC_Encoder_Init(&(btif_media_cb.encoder)); + APPL_TRACE_DEBUG1("btif_media_task_enc_init bit pool %d", btif_media_cb.encoder.s16BitPool); +} + +/******************************************************************************* + ** + ** Function btif_media_task_enc_update + ** + ** Description Update encoding task + ** + ** Returns void + ** + *******************************************************************************/ + +static void btif_media_task_enc_update(BT_HDR *p_msg) +{ + tBTIF_MEDIA_UPDATE_AUDIO * pUpdateAudio = (tBTIF_MEDIA_UPDATE_AUDIO *) p_msg; + SBC_ENC_PARAMS *pstrEncParams = &btif_media_cb.encoder; + UINT16 s16SamplingFreq; + SINT16 s16BitPool; + SINT16 s16BitRate; + SINT16 s16FrameLen; + UINT8 protect = 0; + + APPL_TRACE_DEBUG3("btif_media_task_enc_update : minmtu %d, maxbp %d minbp %d", + pUpdateAudio->MinMtuSize, pUpdateAudio->MaxBitPool, pUpdateAudio->MinBitPool); + + /* Only update the bitrate and MTU size while timer is running to make sure it has been initialized */ + //if (btif_media_cb.is_tx_timer) + { + btif_media_cb.TxAaMtuSize = ((BTIF_MEDIA_AA_BUF_SIZE - BTIF_MEDIA_AA_SBC_OFFSET - sizeof(BT_HDR)) + < pUpdateAudio->MinMtuSize) ? (BTIF_MEDIA_AA_BUF_SIZE - BTIF_MEDIA_AA_SBC_OFFSET + - sizeof(BT_HDR)) : pUpdateAudio->MinMtuSize; + + /* Set the initial target bit rate */ + pstrEncParams->u16BitRate = DEFAULT_SBC_BITRATE; + + if (pstrEncParams->s16SamplingFreq == SBC_sf16000) + s16SamplingFreq = 16000; + else if (pstrEncParams->s16SamplingFreq == SBC_sf32000) + s16SamplingFreq = 32000; + else if (pstrEncParams->s16SamplingFreq == SBC_sf44100) + s16SamplingFreq = 44100; + else + s16SamplingFreq = 48000; + + do + { + if ((pstrEncParams->s16ChannelMode == SBC_JOINT_STEREO) || + (pstrEncParams->s16ChannelMode == SBC_STEREO) ) + { + s16BitPool = (SINT16)( (pstrEncParams->u16BitRate * + pstrEncParams->s16NumOfSubBands * 1000 / s16SamplingFreq) + -( (32 + (4 * pstrEncParams->s16NumOfSubBands * + pstrEncParams->s16NumOfChannels) + + ( (pstrEncParams->s16ChannelMode - 2) * + pstrEncParams->s16NumOfSubBands ) ) + / pstrEncParams->s16NumOfBlocks) ); + + s16FrameLen = 4 + (4*pstrEncParams->s16NumOfSubBands* + pstrEncParams->s16NumOfChannels)/8 + + ( ((pstrEncParams->s16ChannelMode - 2) * + pstrEncParams->s16NumOfSubBands) + + (pstrEncParams->s16NumOfBlocks * s16BitPool) ) / 8; + + s16BitRate = (8 * s16FrameLen * s16SamplingFreq) + / (pstrEncParams->s16NumOfSubBands * + pstrEncParams->s16NumOfBlocks * 1000); + + if (s16BitRate > pstrEncParams->u16BitRate) + s16BitPool--; + + if(pstrEncParams->s16NumOfSubBands == 8) + s16BitPool = (s16BitPool > 255) ? 255 : s16BitPool; + else + s16BitPool = (s16BitPool > 128) ? 128 : s16BitPool; + } + else + { + s16BitPool = (SINT16)( ((pstrEncParams->s16NumOfSubBands * + pstrEncParams->u16BitRate * 1000) + / (s16SamplingFreq * pstrEncParams->s16NumOfChannels)) + -( ( (32 / pstrEncParams->s16NumOfChannels) + + (4 * pstrEncParams->s16NumOfSubBands) ) + / pstrEncParams->s16NumOfBlocks ) ); + + pstrEncParams->s16BitPool = (s16BitPool > + (16 * pstrEncParams->s16NumOfSubBands)) + ? (16*pstrEncParams->s16NumOfSubBands) : s16BitPool; + } + + if (s16BitPool < 0) + { + s16BitPool = 0; + } + + APPL_TRACE_EVENT2("bitpool candidate : %d (%d kbps)", s16BitPool, pstrEncParams->u16BitRate); + + if (s16BitPool > pUpdateAudio->MaxBitPool) + { + APPL_TRACE_WARNING1("btif_media_task_enc_update computed bitpool too large (%d)", s16BitPool); + /* Decrease bitrate */ + btif_media_cb.encoder.u16BitRate -= BTIF_MEDIA_BITRATE_STEP; + /* Record that we have decreased the bitrate */ + protect |= 1; + } + else if (s16BitPool < pUpdateAudio->MinBitPool) + { + APPL_TRACE_WARNING1("btif_media_task_enc_update computed bitpool too small (%d)", s16BitPool); + /* Increase bitrate */ + btif_media_cb.encoder.u16BitRate += BTIF_MEDIA_BITRATE_STEP; + /* Record that we have increased the bitrate */ + protect |= 2; + } + else + { + break; + } + /* In case we have already increased and decreased the bitrate, just stop */ + if (protect == 3) + { + APPL_TRACE_ERROR0("btif_media_task_enc_update could not find bitpool in range"); + break; + } + } while (1); + + /* Finally update the bitpool in the encoder structure */ + pstrEncParams->s16BitPool = s16BitPool; + + APPL_TRACE_DEBUG2("btif_media_task_enc_update final bit rate %d, final bit pool %d", + btif_media_cb.encoder.u16BitRate, btif_media_cb.encoder.s16BitPool); + + /* make sure we reinitialize encoder with new settings */ + SBC_Encoder_Init(&(btif_media_cb.encoder)); + } +} + +/******************************************************************************* + ** + ** Function btif_media_task_pcm2sbc_init + ** + ** Description Init encoding task for PCM to SBC according to feeding + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_pcm2sbc_init(tBTIF_MEDIA_INIT_AUDIO_FEEDING * p_feeding) +{ + BOOLEAN reconfig_needed = FALSE; + + APPL_TRACE_DEBUG0("PCM feeding:"); + APPL_TRACE_DEBUG1("sampling_freq:%d", p_feeding->feeding.cfg.pcm.sampling_freq); + APPL_TRACE_DEBUG1("num_channel:%d", p_feeding->feeding.cfg.pcm.num_channel); + APPL_TRACE_DEBUG1("bit_per_sample:%d", p_feeding->feeding.cfg.pcm.bit_per_sample); + + + /* Check the PCM feeding sampling_freq */ + switch (p_feeding->feeding.cfg.pcm.sampling_freq) + { + case 8000: + case 12000: + case 16000: + case 24000: + case 32000: + case 48000: + /* For these sampling_freq the AV connection must be 48000 */ + if (btif_media_cb.encoder.s16SamplingFreq != SBC_sf48000) + { + /* Reconfiguration needed at 48000 */ + APPL_TRACE_DEBUG0("SBC Reconfiguration needed at 48000"); + btif_media_cb.encoder.s16SamplingFreq = SBC_sf48000; + reconfig_needed = TRUE; + } + break; + + case 11025: + case 22050: + case 44100: + /* For these sampling_freq the AV connection must be 44100 */ + if (btif_media_cb.encoder.s16SamplingFreq != SBC_sf44100) + { + /* Reconfiguration needed at 44100 */ + APPL_TRACE_DEBUG0("SBC Reconfiguration needed at 44100"); + btif_media_cb.encoder.s16SamplingFreq = SBC_sf44100; + reconfig_needed = TRUE; + } + break; + default: + APPL_TRACE_DEBUG0("Feeding PCM sampling_freq unsupported"); + break; + } + + /* Some AV Headsets do not support Mono => always ask for Stereo */ + if (btif_media_cb.encoder.s16ChannelMode == SBC_MONO) + { + APPL_TRACE_DEBUG0("SBC Reconfiguration needed in Stereo"); + btif_media_cb.encoder.s16ChannelMode = SBC_JOINT_STEREO; + reconfig_needed = TRUE; + } + + if (reconfig_needed != FALSE) + { + APPL_TRACE_DEBUG0("btif_media_task_pcm2sbc_init calls SBC_Encoder_Init"); + APPL_TRACE_DEBUG1("btif_media_task_pcm2sbc_init mtu %d", btif_media_cb.TxAaMtuSize); + APPL_TRACE_DEBUG6("btif_media_task_pcm2sbc_init ch mode %d, nbsubd %d, nb blk %d, alloc method %d, bit rate %d, Smp freq %d", + btif_media_cb.encoder.s16ChannelMode, btif_media_cb.encoder.s16NumOfSubBands, btif_media_cb.encoder.s16NumOfBlocks, + btif_media_cb.encoder.s16AllocationMethod, btif_media_cb.encoder.u16BitRate, btif_media_cb.encoder.s16SamplingFreq); + SBC_Encoder_Init(&(btif_media_cb.encoder)); + } + else + { + APPL_TRACE_DEBUG0("btif_media_task_pcm2sbc_init no SBC reconfig needed"); + } +} + + +/******************************************************************************* + ** + ** Function btif_media_task_audio_feeding_init + ** + ** Description Initialize the audio path according to the feeding format + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_audio_feeding_init(BT_HDR *p_msg) +{ + tBTIF_MEDIA_INIT_AUDIO_FEEDING *p_feeding = (tBTIF_MEDIA_INIT_AUDIO_FEEDING *) p_msg; + + APPL_TRACE_DEBUG1("btif_media_task_audio_feeding_init format:%d", p_feeding->feeding.format); + + /* Save Media Feeding information */ + btif_media_cb.feeding_mode = p_feeding->feeding_mode; + btif_media_cb.media_feeding = p_feeding->feeding; + + /* Handle different feeding formats */ + switch (p_feeding->feeding.format) + { + case BTIF_AV_CODEC_PCM: + btif_media_cb.TxTranscoding = BTIF_MEDIA_TRSCD_PCM_2_SBC; + btif_media_task_pcm2sbc_init(p_feeding); + break; + + default : + APPL_TRACE_ERROR1("unknown feeding format %d", p_feeding->feeding.format); + break; + } +} + +/******************************************************************************* + ** + ** Function btif_media_task_uipc_cback + ** + ** Description UIPC call back function for synchronous mode only + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_uipc_cback(BT_HDR *p_msg) +{ + /* Sanity check */ + if (NULL == p_msg) + { + return; + } + + /* Just handle RX_EVT */ + if (p_msg->event != UIPC_RX_DATA_EVT) + { + return; + } + + p_msg->event = BTIF_MEDIA_UIPC_RX_RDY; + + GKI_send_msg(BT_MEDIA_TASK, BTIF_MEDIA_TASK_CMD_MBOX, p_msg); +} + +/******************************************************************************* + ** + ** Function btif_media_task_feeding_state_reset + ** + ** Description Reset the media feeding state + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_feeding_state_reset(void) +{ + /* By default, just clear the entire state */ + memset(&btif_media_cb.media_feeding_state, 0, sizeof(btif_media_cb.media_feeding_state)); +} +/******************************************************************************* + ** + ** Function btif_media_task_aa_start_tx + ** + ** Description Start media task encoding + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_aa_start_tx(void) +{ + APPL_TRACE_DEBUG2("btif_media_task_aa_start_tx is timer %d, feeding mode %d", + btif_media_cb.is_tx_timer, btif_media_cb.feeding_mode); + + + /* Use a timer to poll the UIPC, get rid of the UIPC call back */ + // UIPC_Ioctl(UIPC_CH_ID_AV_AUDIO, UIPC_REG_CBACK, NULL); + + btif_media_cb.is_tx_timer = TRUE; + + /* Reset the media feeding state */ + btif_media_task_feeding_state_reset(); + + APPL_TRACE_EVENT2("starting timer %d ticks (%d)", GKI_MS_TO_TICKS(BTIF_MEDIA_TIME_TICK), TICKS_PER_SEC); + GKI_start_timer(BTIF_MEDIA_AA_TASK_TIMER_ID, GKI_MS_TO_TICKS(BTIF_MEDIA_TIME_TICK), TRUE); +} + +/******************************************************************************* + ** + ** Function btif_media_task_aa_stop_tx + ** + ** Description Stop media task encoding + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_task_aa_stop_tx(void) +{ + APPL_TRACE_DEBUG1("btif_media_task_aa_stop_tx is timer: %d", btif_media_cb.is_tx_timer); + + /* Stop the timer first */ + GKI_stop_timer(BTIF_MEDIA_AA_TASK_TIMER_ID); + btif_media_cb.is_tx_timer = FALSE; + + UIPC_Close(UIPC_CH_ID_AV_AUDIO); + + /* audio engine stopped, reset tx suspended flag */ + btif_media_cb.tx_flush = 0; + + /* Reset the media feeding state */ + btif_media_task_feeding_state_reset(); +} + +/******************************************************************************* + ** + ** Function btif_get_num_aa_frame + ** + ** Description + ** + ** Returns The number of media frames in this time slice + ** + *******************************************************************************/ + + +static UINT8 btif_get_num_aa_frame(void) +{ + UINT8 result=0; + + switch (btif_media_cb.TxTranscoding) + { + case BTIF_MEDIA_TRSCD_PCM_2_SBC: + switch (btif_media_cb.encoder.s16SamplingFreq) + { + case SBC_sf16000: + if (!btif_media_cb.scaling_disabled && + (btif_media_cb.media_feeding_state.pcm.aa_frame_counter++ % 2) == 0) + { + result = BTIF_MEDIA_FR_PER_TICKS_16-1; + } + else + { + result = BTIF_MEDIA_FR_PER_TICKS_16; + } + break; + + case SBC_sf32000: + result = BTIF_MEDIA_FR_PER_TICKS_32; + break; + + case SBC_sf48000: + if (!btif_media_cb.scaling_disabled && + (btif_media_cb.media_feeding_state.pcm.aa_frame_counter++ % 2) == 0) + { + result = BTIF_MEDIA_FR_PER_TICKS_48-1; + } + else + { + result = BTIF_MEDIA_FR_PER_TICKS_48; + } + break; + + case SBC_sf44100: + if (!btif_media_cb.scaling_disabled && + (btif_media_cb.media_feeding_state.pcm.aa_frame_counter++ % 64) < 7) + { + result = BTIF_MEDIA_FR_PER_TICKS_44_1-1; + } + else + { + result = BTIF_MEDIA_FR_PER_TICKS_44_1; + } + break; + } + + VERBOSE("WRITE %d FRAMES", result); + break; + + default: + APPL_TRACE_ERROR1("ERROR btif_get_num_aa_frame Unsupported transcoding format 0x%x", + btif_media_cb.TxTranscoding); + result = 0; + break; + } + +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + APPL_TRACE_DEBUG1("btif_get_num_aa_frame returns %d", result); +#endif + + return result; +} + +/******************************************************************************* + ** + ** Function btif_media_aa_readbuf + ** + ** Description This function is called by the av_co to get the next buffer to send + ** + ** + ** Returns void + *******************************************************************************/ +BT_HDR *btif_media_aa_readbuf(void) +{ + return GKI_dequeue(&(btif_media_cb.TxAaQ)); +} + +/******************************************************************************* + ** + ** Function btif_media_aa_read_feeding + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ + +BOOLEAN btif_media_aa_read_feeding(tUIPC_CH_ID channel_id) +{ + UINT16 event; + /* coverity[SIGN_EXTENSION] False-positive: Parameter are always in range avoiding sign extension*/ + UINT16 blocm_x_subband = btif_media_cb.encoder.s16NumOfSubBands * btif_media_cb.encoder.s16NumOfBlocks; + UINT32 read_size; + UINT16 sbc_sampling = 48000; + UINT32 src_samples; + UINT16 bytes_needed = blocm_x_subband * btif_media_cb.encoder.s16NumOfChannels * sizeof(SINT16); + static UINT16 up_sampled_buffer[SBC_MAX_NUM_FRAME * SBC_MAX_NUM_OF_BLOCKS + * SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS * 2]; + static UINT16 read_buffer[SBC_MAX_NUM_FRAME * SBC_MAX_NUM_OF_BLOCKS + * SBC_MAX_NUM_OF_CHANNELS * SBC_MAX_NUM_OF_SUBBANDS]; + UINT32 src_size_used; + UINT32 dst_size_used; + BOOLEAN fract_needed; + INT32 fract_max; + INT32 fract_threshold; + UINT32 nb_byte_read; + + /* Get the SBC sampling rate */ + switch (btif_media_cb.encoder.s16SamplingFreq) + { + case SBC_sf48000: + sbc_sampling = 48000; + break; + case SBC_sf44100: + sbc_sampling = 44100; + break; + case SBC_sf32000: + sbc_sampling = 32000; + break; + case SBC_sf16000: + sbc_sampling = 16000; + break; + } + + /* Some Feeding PCM frequencies require to split the number of sample */ + /* to read. */ + /* E.g 128/6=21.3333 => read 22 and 21 and 21 => max = 2; threshold = 0*/ + fract_needed = FALSE; /* Default */ + switch (btif_media_cb.media_feeding.cfg.pcm.sampling_freq) + { + case 32000: + case 8000: + fract_needed = TRUE; + fract_max = 2; /* 0, 1 and 2 */ + fract_threshold = 0; /* Add one for the first */ + break; + case 16000: + fract_needed = TRUE; + fract_max = 2; /* 0, 1 and 2 */ + fract_threshold = 1; /* Add one for the first two frames*/ + break; + } + + /* Compute number of sample to read from source */ + src_samples = blocm_x_subband; + src_samples *= btif_media_cb.media_feeding.cfg.pcm.sampling_freq; + src_samples /= sbc_sampling; + + /* The previous division may have a remainder not null */ + if (fract_needed) + { + if (btif_media_cb.media_feeding_state.pcm.aa_feed_counter <= fract_threshold) + { + src_samples++; /* for every read before threshold add one sample */ + } + + /* do nothing if counter >= threshold */ + btif_media_cb.media_feeding_state.pcm.aa_feed_counter++; /* one more read */ + if (btif_media_cb.media_feeding_state.pcm.aa_feed_counter > fract_max) + { + btif_media_cb.media_feeding_state.pcm.aa_feed_counter = 0; + } + } + + /* Compute number of bytes to read from source */ + read_size = src_samples; + read_size *= btif_media_cb.media_feeding.cfg.pcm.num_channel; + read_size *= (btif_media_cb.media_feeding.cfg.pcm.bit_per_sample / 8); + + /* Read Data from UIPC channel */ + nb_byte_read = UIPC_Read(channel_id, &event, (UINT8 *)read_buffer, read_size); + + //tput_mon(TRUE, nb_byte_read, FALSE); + + if (nb_byte_read < read_size) + { + APPL_TRACE_WARNING2("### UNDERRUN :: ONLY READ %d BYTES OUT OF %d ###", + nb_byte_read, read_size); + + if (nb_byte_read == 0) + return FALSE; + + if(btif_media_cb.feeding_mode == BTIF_AV_FEEDING_ASYNCHRONOUS) + { + /* Fill the unfilled part of the read buffer with silence (0) */ + memset(((UINT8 *)read_buffer) + nb_byte_read, 0, read_size - nb_byte_read); + nb_byte_read = read_size; + } + } + + /* Initialize PCM up-sampling engine */ + bta_av_sbc_init_up_sample(btif_media_cb.media_feeding.cfg.pcm.sampling_freq, + sbc_sampling, btif_media_cb.media_feeding.cfg.pcm.bit_per_sample, + btif_media_cb.media_feeding.cfg.pcm.num_channel); + + /* re-sample read buffer */ + /* The output PCM buffer will be stereo, 16 bit per sec */ + dst_size_used = bta_av_sbc_up_sample((UINT8 *)read_buffer, + (UINT8 *)up_sampled_buffer + btif_media_cb.media_feeding_state.pcm.aa_feed_residue, + nb_byte_read, + sizeof(up_sampled_buffer) - btif_media_cb.media_feeding_state.pcm.aa_feed_residue, + &src_size_used); + +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + APPL_TRACE_DEBUG3("btif_media_aa_read_feeding read_size:%d src_size_used:%d dst_size_used:%d", + read_size, src_size_used, dst_size_used); +#endif + + /* update the residue */ + btif_media_cb.media_feeding_state.pcm.aa_feed_residue += dst_size_used; + + /* only copy the pcm sample when we have up-sampled enough PCM */ + if(btif_media_cb.media_feeding_state.pcm.aa_feed_residue >= bytes_needed) + { + /* Copy the output pcm samples in SBC encoding buffer */ + memcpy((UINT8 *)btif_media_cb.encoder.as16PcmBuffer, + (UINT8 *)up_sampled_buffer, + bytes_needed); + /* update the residue */ + btif_media_cb.media_feeding_state.pcm.aa_feed_residue -= bytes_needed; + + if (btif_media_cb.media_feeding_state.pcm.aa_feed_residue != 0) + { + memcpy((UINT8 *)up_sampled_buffer, + (UINT8 *)up_sampled_buffer + bytes_needed, + btif_media_cb.media_feeding_state.pcm.aa_feed_residue); + } + return TRUE; + } + +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + APPL_TRACE_DEBUG3("btif_media_aa_read_feeding residue:%d, dst_size_used %d, bytes_needed %d", + btif_media_cb.media_feeding_state.pcm.aa_feed_residue, dst_size_used, bytes_needed); +#endif + + return FALSE; +} + +/******************************************************************************* + ** + ** Function btif_media_aa_prep_sbc_2_send + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_aa_prep_sbc_2_send(UINT8 nb_frame) +{ + BT_HDR * p_buf; + UINT16 blocm_x_subband = btif_media_cb.encoder.s16NumOfSubBands * btif_media_cb.encoder.s16NumOfBlocks; + +#if (defined(DEBUG_MEDIA_AV_FLOW) && (DEBUG_MEDIA_AV_FLOW == TRUE)) + APPL_TRACE_DEBUG2("btif_media_aa_prep_sbc_2_send nb_frame %d, TxAaQ %d", nb_frame, btif_media_cb.TxAaQ.count); +#endif + while (nb_frame) + { + if (NULL == (p_buf = GKI_getpoolbuf(BTIF_MEDIA_AA_POOL_ID))) + { + APPL_TRACE_ERROR1 ("ERROR btif_media_aa_prep_sbc_2_send no buffer TxCnt %d ", btif_media_cb.TxAaQ.count); + return; + } + + /* Init buffer */ + p_buf->offset = BTIF_MEDIA_AA_SBC_OFFSET; + p_buf->len = 0; + p_buf->layer_specific = 0; + + do + { + /* Write @ of allocated buffer in encoder.pu8Packet */ + btif_media_cb.encoder.pu8Packet = (UINT8 *) (p_buf + 1) + p_buf->offset + p_buf->len; + /* Fill allocated buffer with 0 */ + /* coverity[SIGN_EXTENSION] False-positive: Parameter are always in range avoiding sign extension*/ + memset(btif_media_cb.encoder.as16PcmBuffer, 0, blocm_x_subband + * btif_media_cb.encoder.s16NumOfChannels); + + /* Read PCM data and upsample them if needed */ + if (btif_media_aa_read_feeding(UIPC_CH_ID_AV_AUDIO)) + { + /* SBC encode and descramble frame */ + SBC_Encoder(&(btif_media_cb.encoder)); + A2D_SbcChkFrInit(btif_media_cb.encoder.pu8Packet); + A2D_SbcDescramble(btif_media_cb.encoder.pu8Packet, btif_media_cb.encoder.u16PacketLength); + /* Update SBC frame length */ + p_buf->len += btif_media_cb.encoder.u16PacketLength; + nb_frame--; + p_buf->layer_specific++; + } + else + { + /* no more pcm to read */ + nb_frame = 0; + + /* break read loop if timer was stopped (media task stopped) */ + if ( btif_media_cb.is_tx_timer == FALSE ) + return; + } + + } while (((p_buf->len + btif_media_cb.encoder.u16PacketLength) < btif_media_cb.TxAaMtuSize) + && (p_buf->layer_specific < 0x0F) && nb_frame); + + /* coverity[SIGN_EXTENSION] False-positive: Parameter are always in range avoiding sign extension*/ + btif_media_cb.timestamp += p_buf->layer_specific * blocm_x_subband; + + /* store the time stamp in the buffer to send */ + *((UINT32 *) (p_buf + 1)) = btif_media_cb.timestamp; + + VERBOSE("TX QUEUE NOW %d", btif_media_cb.TxAaQ.count); + + if (btif_media_cb.tx_flush) + { + APPL_TRACE_DEBUG0("### tx suspended, discarded frame ###"); + + if (btif_media_cb.TxAaQ.count > 0) + btif_media_flush_q(&(btif_media_cb.TxAaQ)); + + GKI_freebuf(p_buf); + return; + } + + /* Enqueue the encoded SBC frame in AA Tx Queue */ + GKI_enqueue(&(btif_media_cb.TxAaQ), p_buf); + } +} + + +/******************************************************************************* + ** + ** Function btif_media_aa_prep_2_send + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ + +static void btif_media_aa_prep_2_send(UINT8 nb_frame) +{ + VERBOSE("btif_media_aa_prep_2_send : %d frames (queue %d)", nb_frame, + btif_media_cb.TxAaQ.count); + + /* Remove all the buffers not sent until there are only 4 in the queue */ + while (btif_media_cb.TxAaQ.count >= MAX_OUTPUT_BUFFER_QUEUE_SZ) + { + APPL_TRACE_WARNING1("btif_media_aa_prep_2_send congestion buf count %d",btif_media_cb.TxAaQ.count); + GKI_freebuf(GKI_dequeue(&(btif_media_cb.TxAaQ))); + } + + switch (btif_media_cb.TxTranscoding) + { + case BTIF_MEDIA_TRSCD_PCM_2_SBC: + btif_media_aa_prep_sbc_2_send(nb_frame); + break; + + + default: + APPL_TRACE_ERROR1("ERROR btif_media_aa_prep_2_send unsupported transcoding format 0x%x",btif_media_cb.TxTranscoding); + break; + } +} + +/******************************************************************************* + ** + ** Function btif_media_send_aa_frame + ** + ** Description + ** + ** Returns void + ** + *******************************************************************************/ +static void btif_media_send_aa_frame(void) +{ + UINT8 nb_frame_2_send; + + /* get the number of frame to send */ + nb_frame_2_send = btif_get_num_aa_frame(); + + /* format and Q buffer to send */ + btif_media_aa_prep_2_send(nb_frame_2_send); + + /* send it */ + VERBOSE("btif_media_send_aa_frame : send %d frames", nb_frame_2_send); + bta_av_ci_src_data_ready(BTA_AV_CHNL_AUDIO); +} + +/******************************************************************************* + ** + ** Function btif_media_check_iop_exceptions + ** + ** Description Perform any device specific iop changes + ** + ** Returns void + ** + *******************************************************************************/ + +void btif_media_check_iop_exceptions(UINT8 *peer_bda) +{ + /* disable rate scaling for pcm carkit */ + if ((peer_bda[0] == 0x00) && + (peer_bda[1] == 0x0E) && + (peer_bda[2] == 0x9F)) + { + BTIF_TRACE_WARNING0("detected pcm carkit, disable rate scaling"); + btif_media_cb.scaling_disabled = TRUE; + } + else + { + btif_media_cb.scaling_disabled = FALSE; + } +} + + +#endif /* BTA_AV_INCLUDED == TRUE */ + +/******************************************************************************* + ** + ** Function dump_codec_info + ** + ** Description Decode and display codec_info (for debug) + ** + ** Returns void + ** + *******************************************************************************/ +void dump_codec_info(unsigned char *p_codec) +{ + tA2D_STATUS a2d_status; + tA2D_SBC_CIE sbc_cie; + + a2d_status = A2D_ParsSbcInfo(&sbc_cie, p_codec, FALSE); + if (a2d_status != A2D_SUCCESS) + { + APPL_TRACE_ERROR1("ERROR dump_codec_info A2D_ParsSbcInfo fail:%d", a2d_status); + return; + } + + APPL_TRACE_DEBUG0("dump_codec_info"); + + if (sbc_cie.samp_freq == A2D_SBC_IE_SAMP_FREQ_16) + { APPL_TRACE_DEBUG1("\tsamp_freq:%d (16000)", sbc_cie.samp_freq);} + else if (sbc_cie.samp_freq == A2D_SBC_IE_SAMP_FREQ_32) + { APPL_TRACE_DEBUG1("\tsamp_freq:%d (32000)", sbc_cie.samp_freq);} + else if (sbc_cie.samp_freq == A2D_SBC_IE_SAMP_FREQ_44) + { APPL_TRACE_DEBUG1("\tsamp_freq:%d (44.100)", sbc_cie.samp_freq);} + else if (sbc_cie.samp_freq == A2D_SBC_IE_SAMP_FREQ_48) + { APPL_TRACE_DEBUG1("\tsamp_freq:%d (48000)", sbc_cie.samp_freq);} + else + { APPL_TRACE_DEBUG1("\tBAD samp_freq:%d", sbc_cie.samp_freq);} + + if (sbc_cie.ch_mode == A2D_SBC_IE_CH_MD_MONO) + { APPL_TRACE_DEBUG1("\tch_mode:%d (Mono)", sbc_cie.ch_mode);} + else if (sbc_cie.ch_mode == A2D_SBC_IE_CH_MD_DUAL) + { APPL_TRACE_DEBUG1("\tch_mode:%d (Dual)", sbc_cie.ch_mode);} + else if (sbc_cie.ch_mode == A2D_SBC_IE_CH_MD_STEREO) + { APPL_TRACE_DEBUG1("\tch_mode:%d (Stereo)", sbc_cie.ch_mode);} + else if (sbc_cie.ch_mode == A2D_SBC_IE_CH_MD_JOINT) + { APPL_TRACE_DEBUG1("\tch_mode:%d (Joint)", sbc_cie.ch_mode);} + else + { APPL_TRACE_DEBUG1("\tBAD ch_mode:%d", sbc_cie.ch_mode);} + + if (sbc_cie.block_len == A2D_SBC_IE_BLOCKS_4) + { APPL_TRACE_DEBUG1("\tblock_len:%d (4)", sbc_cie.block_len);} + else if (sbc_cie.block_len == A2D_SBC_IE_BLOCKS_8) + { APPL_TRACE_DEBUG1("\tblock_len:%d (8)", sbc_cie.block_len);} + else if (sbc_cie.block_len == A2D_SBC_IE_BLOCKS_12) + { APPL_TRACE_DEBUG1("\tblock_len:%d (12)", sbc_cie.block_len);} + else if (sbc_cie.block_len == A2D_SBC_IE_BLOCKS_16) + { APPL_TRACE_DEBUG1("\tblock_len:%d (16)", sbc_cie.block_len);} + else + { APPL_TRACE_DEBUG1("\tBAD block_len:%d", sbc_cie.block_len);} + + if (sbc_cie.num_subbands == A2D_SBC_IE_SUBBAND_4) + { APPL_TRACE_DEBUG1("\tnum_subbands:%d (4)", sbc_cie.num_subbands);} + else if (sbc_cie.num_subbands == A2D_SBC_IE_SUBBAND_8) + { APPL_TRACE_DEBUG1("\tnum_subbands:%d (8)", sbc_cie.num_subbands);} + else + { APPL_TRACE_DEBUG1("\tBAD num_subbands:%d", sbc_cie.num_subbands);} + + if (sbc_cie.alloc_mthd == A2D_SBC_IE_ALLOC_MD_S) + { APPL_TRACE_DEBUG1("\talloc_mthd:%d (SNR)", sbc_cie.alloc_mthd);} + else if (sbc_cie.alloc_mthd == A2D_SBC_IE_ALLOC_MD_L) + { APPL_TRACE_DEBUG1("\talloc_mthd:%d (Loundess)", sbc_cie.alloc_mthd);} + else + { APPL_TRACE_DEBUG1("\tBAD alloc_mthd:%d", sbc_cie.alloc_mthd);} + + APPL_TRACE_DEBUG2("\tBit pool Min:%d Max:%d", sbc_cie.min_bitpool, sbc_cie.max_bitpool); + +} + |