| /* |
| * Copyright (c) 2015-16, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #define LOG_TAG "split_a2dp" |
| /*#define LOG_NDEBUG 0*/ |
| #define LOG_NDDEBUG 0 |
| #include <errno.h> |
| #include <cutils/log.h> |
| #include <dlfcn.h> |
| #include "audio_hw.h" |
| #include "platform.h" |
| #include "platform_api.h" |
| #include <stdlib.h> |
| #include <cutils/str_parms.h> |
| #include <hardware/audio.h> |
| #include <hardware/hardware.h> |
| #include <cutils/properties.h> |
| |
| #ifdef SPLIT_A2DP_ENABLED |
| #define AUDIO_PARAMETER_A2DP_STARTED "A2dpStarted" |
| #define BT_IPC_LIB_NAME "libbthost_if.so" |
| #define ENC_MEDIA_FMT_NONE 0 |
| #define ENC_MEDIA_FMT_AAC 0x00010DA6 |
| #define ENC_MEDIA_FMT_APTX 0x000131ff |
| #define ENC_MEDIA_FMT_APTX_HD 0x00013200 |
| #define ENC_MEDIA_FMT_SBC 0x00010BF2 |
| #define MEDIA_FMT_AAC_AOT_LC 2 |
| #define MEDIA_FMT_AAC_AOT_SBR 5 |
| #define MEDIA_FMT_AAC_AOT_PS 29 |
| #define PCM_CHANNEL_L 1 |
| #define PCM_CHANNEL_R 2 |
| #define PCM_CHANNEL_C 3 |
| #define MEDIA_FMT_SBC_CHANNEL_MODE_MONO 1 |
| #define MEDIA_FMT_SBC_CHANNEL_MODE_STEREO 2 |
| #define MEDIA_FMT_SBC_CHANNEL_MODE_DUAL_MONO 8 |
| #define MEDIA_FMT_SBC_CHANNEL_MODE_JOINT_STEREO 9 |
| #define MEDIA_FMT_SBC_ALLOCATION_METHOD_LOUDNESS 0 |
| #define MEDIA_FMT_SBC_ALLOCATION_METHOD_SNR 1 |
| #define MIXER_ENC_CONFIG_BLOCK "SLIM_7_RX Encoder Config" |
| #define MIXER_ENC_FMT_SBC "SBC" |
| #define MIXER_ENC_FMT_AAC "AAC" |
| #define MIXER_ENC_FMT_APTX "APTX" |
| #define MIXER_ENC_FMT_APTXHD "APTXHD" |
| #define MIXER_ENC_FMT_NONE "NONE" |
| |
| |
| typedef int (*audio_stream_open_t)(void); |
| typedef int (*audio_stream_close_t)(void); |
| typedef int (*audio_start_stream_t)(void); |
| typedef int (*audio_stop_stream_t)(void); |
| typedef int (*audio_suspend_stream_t)(void); |
| typedef void (*audio_handoff_triggered_t)(void); |
| typedef void (*clear_a2dpsuspend_flag_t)(void); |
| typedef void * (*audio_get_codec_config_t)(uint8_t *multicast_status,uint8_t *num_dev, |
| audio_format_t *codec_type); |
| |
| enum A2DP_STATE { |
| A2DP_STATE_CONNECTED, |
| A2DP_STATE_STARTED, |
| A2DP_STATE_STOPPED, |
| A2DP_STATE_DISCONNECTED, |
| }; |
| |
| /* structure used to update a2dp state machine |
| * to communicate IPC library |
| * to store DSP encoder configuration information |
| */ |
| struct a2dp_data { |
| struct audio_device *adev; |
| void *bt_lib_handle; |
| audio_stream_open_t audio_stream_open; |
| audio_stream_close_t audio_stream_close; |
| audio_start_stream_t audio_start_stream; |
| audio_stop_stream_t audio_stop_stream; |
| audio_suspend_stream_t audio_suspend_stream; |
| audio_handoff_triggered_t audio_handoff_triggered; |
| clear_a2dpsuspend_flag_t clear_a2dpsuspend_flag; |
| audio_get_codec_config_t audio_get_codec_config; |
| enum A2DP_STATE bt_state; |
| audio_format_t bt_encoder_format; |
| void *enc_config_data; |
| bool a2dp_started; |
| bool a2dp_suspended; |
| int a2dp_total_active_session_request; |
| bool is_a2dp_offload_supported; |
| bool is_handoff_in_progress; |
| }; |
| |
| struct a2dp_data a2dp; |
| |
| /* START of DSP configurable structures |
| * These values should match with DSP interface defintion |
| */ |
| |
| /* AAC encoder configuration structure. */ |
| typedef struct aac_enc_cfg_t aac_enc_cfg_t; |
| |
| /* supported enc_mode are AAC_LC, AAC_SBR, AAC_PS |
| * supported aac_fmt_flag are ADTS/RAW |
| * supported channel_cfg are Native mode, Mono , Stereo |
| */ |
| struct aac_enc_cfg_t { |
| uint32_t enc_format; |
| uint32_t bit_rate; |
| uint32_t enc_mode; |
| uint16_t aac_fmt_flag; |
| uint16_t channel_cfg; |
| uint32_t sample_rate; |
| } ; |
| |
| /* SBC encoder configuration structure. */ |
| typedef struct sbc_enc_cfg_t sbc_enc_cfg_t; |
| |
| /* supported num_subbands are 4/8 |
| * supported blk_len are 4, 8, 12, 16 |
| * supported channel_mode are MONO, STEREO, DUAL_MONO, JOINT_STEREO |
| * supported alloc_method are LOUNDNESS/SNR |
| * supported bit_rate for mono channel is max 320kbps |
| * supported bit rate for stereo channel is max 512 kbps |
| */ |
| struct sbc_enc_cfg_t{ |
| uint32_t enc_format; |
| uint32_t num_subbands; |
| uint32_t blk_len; |
| uint32_t channel_mode; |
| uint32_t alloc_method; |
| uint32_t bit_rate; |
| uint32_t sample_rate; |
| }; |
| |
| |
| /* supported num_channels are Mono/Stereo |
| * supported channel_mapping for mono is CHANNEL_C |
| * supported channel mapping for stereo is CHANNEL_L and CHANNEL_R |
| * custom size and reserved are not used(for future enhancement) |
| */ |
| struct custom_enc_cfg_aptx_t |
| { |
| uint32_t enc_format; |
| uint32_t sample_rate; |
| uint16_t num_channels; |
| uint16_t reserved; |
| uint8_t channel_mapping[8]; |
| uint32_t custom_size; |
| }; |
| |
| /*********** END of DSP configurable structures ********************/ |
| |
| /* API to identify DSP encoder captabilities */ |
| static void a2dp_offload_codec_cap_parser(char *value) |
| { |
| char *tok = NULL,*saveptr; |
| |
| tok = strtok_r(value, "-", &saveptr); |
| while (tok != NULL) { |
| if (strcmp(tok, "sbc") == 0) { |
| ALOGD("%s: SBC offload supported\n",__func__); |
| a2dp.is_a2dp_offload_supported = true; |
| break; |
| } else if (strcmp(tok, "aptx") == 0) { |
| ALOGD("%s: aptx offload supported\n",__func__); |
| a2dp.is_a2dp_offload_supported = true; |
| break; |
| } |
| tok = strtok_r(NULL, "-", &saveptr); |
| }; |
| } |
| |
| static void update_offload_codec_capabilities() |
| { |
| char value[PROPERTY_VALUE_MAX] = {'\0'}; |
| |
| property_get("persist.bt.a2dp_offload_cap", value, "false"); |
| ALOGD("get_offload_codec_capabilities = %s",value); |
| a2dp.is_a2dp_offload_supported = |
| property_get_bool("persist.bt.a2dp_offload_cap", false); |
| if (strcmp(value, "false") != 0) |
| a2dp_offload_codec_cap_parser(value); |
| ALOGD("%s: codec cap = %s",__func__,value); |
| } |
| |
| /* API to open BT IPC library to start IPC communication */ |
| static void open_a2dp_output() |
| { |
| int ret = 0; |
| |
| ALOGD(" Open A2DP output start "); |
| if (a2dp.bt_lib_handle == NULL){ |
| ALOGD(" Requesting for BT lib handle"); |
| a2dp.bt_lib_handle = dlopen(BT_IPC_LIB_NAME, RTLD_NOW); |
| |
| if (a2dp.bt_lib_handle == NULL) { |
| ALOGE("%s: DLOPEN failed for %s", __func__, BT_IPC_LIB_NAME); |
| ret = -ENOSYS; |
| goto init_fail; |
| } else { |
| a2dp.audio_stream_open = (audio_stream_open_t) |
| dlsym(a2dp.bt_lib_handle, "audio_stream_open"); |
| a2dp.audio_start_stream = (audio_start_stream_t) |
| dlsym(a2dp.bt_lib_handle, "audio_start_stream"); |
| a2dp.audio_get_codec_config = (audio_get_codec_config_t) |
| dlsym(a2dp.bt_lib_handle, "audio_get_codec_config"); |
| a2dp.audio_suspend_stream = (audio_suspend_stream_t) |
| dlsym(a2dp.bt_lib_handle, "audio_suspend_stream"); |
| a2dp.audio_handoff_triggered = (audio_handoff_triggered_t) |
| dlsym(a2dp.bt_lib_handle, "audio_handoff_triggered"); |
| a2dp.clear_a2dpsuspend_flag = (clear_a2dpsuspend_flag_t) |
| dlsym(a2dp.bt_lib_handle, "clear_a2dpsuspend_flag"); |
| a2dp.audio_stop_stream = (audio_stop_stream_t) |
| dlsym(a2dp.bt_lib_handle, "audio_stop_stream"); |
| a2dp.audio_stream_close = (audio_stream_close_t) |
| dlsym(a2dp.bt_lib_handle, "audio_stream_close"); |
| } |
| } |
| |
| if (a2dp.bt_lib_handle && a2dp.audio_stream_open) { |
| if (a2dp.bt_state == A2DP_STATE_DISCONNECTED) { |
| ALOGD("calling BT stream open"); |
| ret = a2dp.audio_stream_open(); |
| if(ret != 0) { |
| ALOGE("Failed to open output stream for a2dp: status %d", ret); |
| goto init_fail; |
| } |
| a2dp.bt_state = A2DP_STATE_CONNECTED; |
| } else { |
| ALOGD("Called a2dp open with improper state, Ignoring request state %d", a2dp.bt_state); |
| } |
| } else { |
| ALOGE("a2dp handle is not identified, Ignoring open request"); |
| a2dp.bt_state = A2DP_STATE_DISCONNECTED; |
| goto init_fail; |
| } |
| |
| init_fail: |
| if(ret != 0 && (a2dp.bt_lib_handle != NULL)) { |
| dlclose(a2dp.bt_lib_handle); |
| a2dp.bt_lib_handle = NULL; |
| } |
| } |
| |
| static int close_a2dp_output() |
| { |
| ALOGV("%s\n",__func__); |
| if (!(a2dp.bt_lib_handle && a2dp.audio_stream_close)) { |
| ALOGE("a2dp handle is not identified, Ignoring close request"); |
| return -ENOSYS; |
| } |
| if ((a2dp.bt_state == A2DP_STATE_CONNECTED) && |
| (a2dp.bt_state == A2DP_STATE_STARTED) && |
| (a2dp.bt_state == A2DP_STATE_STOPPED)) { |
| ALOGD("calling BT stream close"); |
| if(a2dp.audio_stream_close() == false) |
| ALOGE("failed close a2dp control path from BT library"); |
| a2dp.a2dp_started = false; |
| a2dp.a2dp_total_active_session_request = 0; |
| a2dp.a2dp_suspended = false; |
| a2dp.bt_encoder_format = AUDIO_FORMAT_INVALID; |
| a2dp.enc_config_data = NULL; |
| a2dp.bt_state = A2DP_STATE_DISCONNECTED; |
| } else { |
| ALOGD("close a2dp called in improper state"); |
| a2dp.a2dp_started = false; |
| a2dp.a2dp_total_active_session_request = 0; |
| a2dp.a2dp_suspended = false; |
| a2dp.bt_encoder_format = AUDIO_FORMAT_INVALID; |
| a2dp.enc_config_data = NULL; |
| a2dp.bt_state = A2DP_STATE_DISCONNECTED; |
| } |
| |
| return 0; |
| } |
| |
| /* API to configure SBC DSP encoder */ |
| bool configure_sbc_enc_format(audio_sbc_encoder_config *sbc_bt_cfg) |
| { |
| struct mixer_ctl *ctl_enc_data; |
| struct sbc_enc_cfg_t sbc_dsp_cfg; |
| bool is_configured = false; |
| int ret = 0; |
| |
| if(sbc_bt_cfg == NULL) |
| return false; |
| |
| ctl_enc_data = mixer_get_ctl_by_name(a2dp.adev->mixer, MIXER_ENC_CONFIG_BLOCK); |
| if (!ctl_enc_data) { |
| ALOGE(" ERROR a2dp encoder CONFIG data mixer control not identifed"); |
| is_configured = false; |
| goto fail; |
| } |
| a2dp.bt_encoder_format = AUDIO_FORMAT_SBC; |
| memset(&sbc_dsp_cfg, 0x0, sizeof(struct sbc_enc_cfg_t)); |
| sbc_dsp_cfg.enc_format = ENC_MEDIA_FMT_SBC; |
| sbc_dsp_cfg.num_subbands = sbc_bt_cfg->subband; |
| sbc_dsp_cfg.blk_len = sbc_bt_cfg->blk_len; |
| switch(sbc_bt_cfg->channels) { |
| case 0: |
| sbc_dsp_cfg.channel_mode = MEDIA_FMT_SBC_CHANNEL_MODE_MONO; |
| break; |
| case 1: |
| sbc_dsp_cfg.channel_mode = MEDIA_FMT_SBC_CHANNEL_MODE_DUAL_MONO; |
| break; |
| case 3: |
| sbc_dsp_cfg.channel_mode = MEDIA_FMT_SBC_CHANNEL_MODE_JOINT_STEREO; |
| break; |
| case 2: |
| default: |
| sbc_dsp_cfg.channel_mode = MEDIA_FMT_SBC_CHANNEL_MODE_STEREO; |
| break; |
| } |
| if (sbc_bt_cfg->alloc) |
| sbc_dsp_cfg.alloc_method = MEDIA_FMT_SBC_ALLOCATION_METHOD_LOUDNESS; |
| else |
| sbc_dsp_cfg.alloc_method = MEDIA_FMT_SBC_ALLOCATION_METHOD_SNR; |
| sbc_dsp_cfg.bit_rate = sbc_bt_cfg->bitrate; |
| sbc_dsp_cfg.sample_rate = sbc_bt_cfg->sampling_rate; |
| ret = mixer_ctl_set_array(ctl_enc_data, (void *)&sbc_dsp_cfg, |
| sizeof(struct sbc_enc_cfg_t)); |
| if (ret != 0) { |
| ALOGE("%s: failed to set SBC encoder config", __func__); |
| is_configured = false; |
| } else |
| is_configured = true; |
| fail: |
| return is_configured; |
| } |
| |
| /* API to configure APTX DSP encoder */ |
| bool configure_aptx_enc_format(audio_aptx_encoder_config *aptx_bt_cfg) |
| { |
| struct mixer_ctl *ctl_enc_data; |
| struct custom_enc_cfg_aptx_t aptx_dsp_cfg; |
| bool is_configured = false; |
| int ret = 0; |
| |
| if(aptx_bt_cfg == NULL) |
| return false; |
| |
| ctl_enc_data = mixer_get_ctl_by_name(a2dp.adev->mixer, MIXER_ENC_CONFIG_BLOCK); |
| if (!ctl_enc_data) { |
| ALOGE(" ERROR a2dp encoder CONFIG data mixer control not identifed"); |
| is_configured = false; |
| goto fail; |
| } |
| a2dp.bt_encoder_format = AUDIO_FORMAT_APTX; |
| memset(&aptx_dsp_cfg, 0x0, sizeof(struct custom_enc_cfg_aptx_t)); |
| aptx_dsp_cfg.enc_format = ENC_MEDIA_FMT_APTX; |
| aptx_dsp_cfg.sample_rate = aptx_bt_cfg->sampling_rate; |
| aptx_dsp_cfg.num_channels = aptx_bt_cfg->channels; |
| switch(aptx_dsp_cfg.num_channels) { |
| case 1: |
| aptx_dsp_cfg.channel_mapping[0] = PCM_CHANNEL_C; |
| break; |
| case 2: |
| default: |
| aptx_dsp_cfg.channel_mapping[0] = PCM_CHANNEL_L; |
| aptx_dsp_cfg.channel_mapping[1] = PCM_CHANNEL_R; |
| break; |
| } |
| ret = mixer_ctl_set_array(ctl_enc_data, (void *)&aptx_dsp_cfg, |
| sizeof(struct custom_enc_cfg_aptx_t)); |
| if (ret != 0) { |
| ALOGE("%s: Failed to set APTX encoder config", __func__); |
| is_configured = false; |
| goto fail; |
| } |
| is_configured = true; |
| fail: |
| return is_configured; |
| } |
| |
| /* API to configure APTX HD DSP encoder |
| * TODO: ADD 24 bit configuration support |
| */ |
| bool configure_aptx_hd_enc_format(audio_aptx_encoder_config *aptx_bt_cfg) |
| { |
| struct mixer_ctl *ctl_enc_data; |
| struct custom_enc_cfg_aptx_t aptx_dsp_cfg; |
| bool is_configured = false; |
| int ret = 0; |
| |
| if(aptx_bt_cfg == NULL) |
| return false; |
| |
| ctl_enc_data = mixer_get_ctl_by_name(a2dp.adev->mixer, MIXER_ENC_CONFIG_BLOCK); |
| if (!ctl_enc_data) { |
| ALOGE(" ERROR a2dp encoder CONFIG data mixer control not identifed"); |
| is_configured = false; |
| goto fail; |
| } |
| a2dp.bt_encoder_format = AUDIO_FORMAT_APTX_HD; |
| memset(&aptx_dsp_cfg, 0x0, sizeof(struct custom_enc_cfg_aptx_t)); |
| aptx_dsp_cfg.enc_format = ENC_MEDIA_FMT_APTX_HD; |
| aptx_dsp_cfg.sample_rate = aptx_bt_cfg->sampling_rate; |
| aptx_dsp_cfg.num_channels = aptx_bt_cfg->channels; |
| switch(aptx_dsp_cfg.num_channels) { |
| case 1: |
| aptx_dsp_cfg.channel_mapping[0] = PCM_CHANNEL_C; |
| break; |
| case 2: |
| default: |
| aptx_dsp_cfg.channel_mapping[0] = PCM_CHANNEL_L; |
| aptx_dsp_cfg.channel_mapping[1] = PCM_CHANNEL_R; |
| break; |
| } |
| ret = mixer_ctl_set_array(ctl_enc_data, (void *)&aptx_dsp_cfg, |
| sizeof(struct custom_enc_cfg_aptx_t)); |
| if (ret != 0) { |
| ALOGE("%s: Failed to set APTX HD encoder config", __func__); |
| is_configured = false; |
| goto fail; |
| } |
| is_configured = true; |
| fail: |
| return is_configured; |
| } |
| |
| /* API to configure AAC DSP encoder */ |
| bool configure_aac_enc_format(audio_aac_encoder_config *aac_bt_cfg) |
| { |
| struct mixer_ctl *ctl_enc_data; |
| struct aac_enc_cfg_t aac_dsp_cfg; |
| bool is_configured = false; |
| int ret = 0; |
| |
| if(aac_bt_cfg == NULL) |
| return false; |
| |
| ctl_enc_data = mixer_get_ctl_by_name(a2dp.adev->mixer, MIXER_ENC_CONFIG_BLOCK); |
| if (!ctl_enc_data) { |
| ALOGE(" ERROR a2dp encoder CONFIG data mixer control not identifed"); |
| is_configured = false; |
| goto fail; |
| } |
| a2dp.bt_encoder_format = AUDIO_FORMAT_AAC; |
| memset(&aac_dsp_cfg, 0x0, sizeof(struct aac_enc_cfg_t)); |
| aac_dsp_cfg.enc_format = ENC_MEDIA_FMT_AAC; |
| aac_dsp_cfg.bit_rate = aac_bt_cfg->bitrate; |
| aac_dsp_cfg.sample_rate = aac_bt_cfg->sampling_rate; |
| switch(aac_bt_cfg->enc_mode) { |
| case 0: |
| aac_dsp_cfg.enc_mode = MEDIA_FMT_AAC_AOT_LC; |
| break; |
| case 2: |
| aac_dsp_cfg.enc_mode = MEDIA_FMT_AAC_AOT_PS; |
| break; |
| case 1: |
| default: |
| aac_dsp_cfg.enc_mode = MEDIA_FMT_AAC_AOT_SBR; |
| break; |
| } |
| aac_dsp_cfg.aac_fmt_flag = aac_bt_cfg->format_flag; |
| aac_dsp_cfg.channel_cfg = aac_bt_cfg->channels; |
| ret = mixer_ctl_set_array(ctl_enc_data, (void *)&aac_dsp_cfg, |
| sizeof(struct aac_enc_cfg_t)); |
| if (ret != 0) { |
| ALOGE("%s: failed to set SBC encoder config", __func__); |
| is_configured = false; |
| } else |
| is_configured = true; |
| fail: |
| return is_configured; |
| } |
| |
| bool configure_a2dp_encoder_format() |
| { |
| void *codec_info = NULL; |
| uint8_t multi_cast = 0, num_dev = 1; |
| audio_format_t codec_type = AUDIO_FORMAT_INVALID; |
| bool is_configured = false; |
| |
| if (!a2dp.audio_get_codec_config) { |
| ALOGE(" a2dp handle is not identified, ignoring a2dp encoder config"); |
| return false; |
| } |
| ALOGD("configure_a2dp_encoder_format start"); |
| codec_info = a2dp.audio_get_codec_config(&multi_cast, &num_dev, |
| &codec_type); |
| |
| switch(codec_type) { |
| case AUDIO_FORMAT_SBC: |
| ALOGD(" Received SBC encoder supported BT device"); |
| is_configured = |
| configure_sbc_enc_format((audio_sbc_encoder_config *)codec_info); |
| break; |
| case AUDIO_FORMAT_APTX: |
| ALOGD(" Received APTX encoder supported BT device"); |
| is_configured = |
| configure_aptx_enc_format((audio_aptx_encoder_config *)codec_info); |
| break; |
| case AUDIO_FORMAT_APTX_HD: |
| ALOGD(" Received APTX HD encoder supported BT device"); |
| is_configured = |
| configure_aptx_hd_enc_format((audio_aptx_encoder_config *)codec_info); |
| break; |
| case AUDIO_FORMAT_AAC: |
| ALOGD(" Received AAC encoder supported BT device"); |
| is_configured = |
| configure_aac_enc_format((audio_aac_encoder_config *)codec_info); |
| break; |
| default: |
| ALOGD(" Received Unsupported encoder formar"); |
| is_configured = false; |
| break; |
| } |
| return is_configured; |
| } |
| |
| int audio_extn_a2dp_start_playback() |
| { |
| int ret = 0; |
| |
| ALOGD("audio_extn_a2dp_start_playback start"); |
| |
| if(!(a2dp.bt_lib_handle && a2dp.audio_start_stream |
| && a2dp.audio_get_codec_config)) { |
| ALOGE("a2dp handle is not identified, Ignoring start request"); |
| return -ENOSYS; |
| } |
| |
| if(a2dp.a2dp_suspended == true) { |
| //session will be restarted after suspend completion |
| ALOGD("a2dp start requested during suspend state"); |
| return -ENOSYS; |
| } |
| |
| if (!a2dp.a2dp_started && !a2dp.a2dp_total_active_session_request) { |
| ALOGD("calling BT module stream start"); |
| /* This call indicates BT IPC lib to start playback */ |
| ret = a2dp.audio_start_stream(); |
| ALOGE("BT controller start return = %d",ret); |
| if (ret != 0 ) { |
| ALOGE("BT controller start failed"); |
| a2dp.a2dp_started = false; |
| ret = -ETIMEDOUT; |
| } else { |
| if(configure_a2dp_encoder_format() == true) { |
| a2dp.a2dp_started = true; |
| ret = 0; |
| ALOGD("Start playback successful to BT library"); |
| } else { |
| ALOGD(" unable to configure DSP encoder"); |
| a2dp.a2dp_started = false; |
| ret = -ETIMEDOUT; |
| } |
| } |
| } |
| |
| if (a2dp.a2dp_started) |
| a2dp.a2dp_total_active_session_request++; |
| |
| ALOGD("start A2DP playback total active sessions :%d", |
| a2dp.a2dp_total_active_session_request); |
| return ret; |
| } |
| |
| int audio_extn_a2dp_stop_playback() |
| { |
| int ret =0; |
| |
| ALOGV("audio_extn_a2dp_stop_playback start"); |
| if(!(a2dp.bt_lib_handle && a2dp.audio_stop_stream)) { |
| ALOGE("a2dp handle is not identified, Ignoring start request"); |
| return -ENOSYS; |
| } |
| |
| if (a2dp.a2dp_started && (a2dp.a2dp_total_active_session_request > 0)) |
| a2dp.a2dp_total_active_session_request--; |
| |
| if ( a2dp.a2dp_started && !a2dp.a2dp_total_active_session_request) { |
| struct mixer_ctl *ctl_enc_config; |
| struct sbc_enc_cfg_t dummy_reset_config; |
| |
| ALOGV("calling BT module stream stop"); |
| ret = a2dp.audio_stop_stream(); |
| if (ret < 0) |
| ALOGE("stop stream to BT IPC lib failed"); |
| else |
| ALOGV("stop steam to BT IPC lib successful"); |
| memset(&dummy_reset_config, 0x0, sizeof(struct sbc_enc_cfg_t)); |
| ctl_enc_config = mixer_get_ctl_by_name(a2dp.adev->mixer, |
| MIXER_ENC_CONFIG_BLOCK); |
| if (!ctl_enc_config) { |
| ALOGE(" ERROR a2dp encoder format mixer control not identifed"); |
| } else { |
| ret = mixer_ctl_set_array(ctl_enc_config, (void *)&dummy_reset_config, |
| sizeof(struct sbc_enc_cfg_t)); |
| a2dp.bt_encoder_format = ENC_MEDIA_FMT_NONE; |
| } |
| } |
| if(!a2dp.a2dp_total_active_session_request) |
| a2dp.a2dp_started = false; |
| ALOGD("Stop A2DP playback total active sessions :%d", |
| a2dp.a2dp_total_active_session_request); |
| return 0; |
| } |
| |
| void audio_extn_a2dp_set_parameters(struct str_parms *parms) |
| { |
| int ret, val; |
| char value[32]={0}; |
| |
| if(a2dp.is_a2dp_offload_supported == false) { |
| ALOGV("no supported encoders identified,ignoring a2dp setparam"); |
| return; |
| } |
| |
| ret = str_parms_get_str(parms, AUDIO_PARAMETER_DEVICE_CONNECT, value, |
| sizeof(value)); |
| if( ret >= 0) { |
| val = atoi(value); |
| if (val & AUDIO_DEVICE_OUT_ALL_A2DP) { |
| ALOGV("Received device connect request for A2DP"); |
| open_a2dp_output(); |
| } |
| goto param_handled; |
| } |
| |
| ret = str_parms_get_str(parms, AUDIO_PARAMETER_DEVICE_DISCONNECT, value, |
| sizeof(value)); |
| |
| if( ret >= 0) { |
| val = atoi(value); |
| if (val & AUDIO_DEVICE_OUT_ALL_A2DP) { |
| ALOGV("Received device dis- connect request"); |
| close_a2dp_output(); |
| } |
| goto param_handled; |
| } |
| |
| ret = str_parms_get_str(parms, "A2dpSuspended", value, sizeof(value)); |
| if (ret >= 0) { |
| if (a2dp.bt_lib_handle && (a2dp.bt_state != A2DP_STATE_DISCONNECTED) ) { |
| if ((!strncmp(value,"true",sizeof(value)))) { |
| ALOGD("Setting a2dp to suspend state"); |
| a2dp.a2dp_suspended = true; |
| if(a2dp.audio_suspend_stream) |
| a2dp.audio_suspend_stream(); |
| } else if (a2dp.a2dp_suspended == true) { |
| ALOGD("Resetting a2dp suspend state"); |
| if(a2dp.clear_a2dpsuspend_flag) |
| a2dp.clear_a2dpsuspend_flag(); |
| a2dp.a2dp_suspended = false; |
| } |
| } |
| goto param_handled; |
| } |
| param_handled: |
| ALOGV("end of a2dp setparam"); |
| } |
| |
| void audio_extn_a2dp_set_handoff_mode(bool is_on) |
| { |
| a2dp.is_handoff_in_progress = is_on; |
| } |
| |
| bool audio_extn_a2dp_is_force_device_switch() |
| { |
| //During encoder reconfiguration mode, force a2dp device switch |
| return a2dp.is_handoff_in_progress; |
| } |
| |
| void audio_extn_a2dp_init (void *adev) |
| { |
| a2dp.adev = (struct audio_device*)adev; |
| a2dp.bt_lib_handle = NULL; |
| a2dp.a2dp_started = false; |
| a2dp.bt_state = A2DP_STATE_DISCONNECTED; |
| a2dp.a2dp_total_active_session_request = 0; |
| a2dp.a2dp_suspended = false; |
| a2dp.bt_encoder_format = AUDIO_FORMAT_INVALID; |
| a2dp.enc_config_data = NULL; |
| a2dp.is_a2dp_offload_supported = false; |
| a2dp.is_handoff_in_progress = false; |
| update_offload_codec_capabilities(); |
| } |
| #endif // SPLIT_A2DP_ENABLED |