/* * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. * Not a Contribution. * * Copyright (C) 2013-2014 The Android Open Source Project * * 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. */ #define LOG_TAG "audio_hw_primary" #define LOG_NDEBUG 0 /*#define VERY_VERY_VERBOSE_LOGGING*/ #ifdef VERY_VERY_VERBOSE_LOGGING #define ALOGVV ALOGV #else #define ALOGVV(a...) do { } while(0) #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "audio_hw.h" #include "platform_api.h" #include #include "audio_extn.h" #include "sound/compress_params.h" #define MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE (256 * 1024) #define MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE (8 * 1024) #define COMPRESS_OFFLOAD_FRAGMENT_SIZE (32 * 1024) #define COMPRESS_OFFLOAD_NUM_FRAGMENTS 4 /* ToDo: Check and update a proper value in msec */ #define COMPRESS_OFFLOAD_PLAYBACK_LATENCY 96 #define COMPRESS_PLAYBACK_VOLUME_MAX 0x2000 #ifdef DEEP_BUFFER_PRIMARY #define USECASE_AUDIO_PLAYBACK_PRIMARY USECASE_AUDIO_PLAYBACK_DEEP_BUFFER #else #define USECASE_AUDIO_PLAYBACK_PRIMARY USECASE_AUDIO_PLAYBACK_LOW_LATENCY #endif struct pcm_config pcm_config_deep_buffer = { .channels = 2, .rate = DEFAULT_OUTPUT_SAMPLING_RATE, .period_size = DEEP_BUFFER_OUTPUT_PERIOD_SIZE, .period_count = DEEP_BUFFER_OUTPUT_PERIOD_COUNT, .format = PCM_FORMAT_S16_LE, .start_threshold = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4, .stop_threshold = INT_MAX, .avail_min = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4, }; struct pcm_config pcm_config_low_latency = { .channels = 2, .rate = DEFAULT_OUTPUT_SAMPLING_RATE, .period_size = LOW_LATENCY_OUTPUT_PERIOD_SIZE, .period_count = LOW_LATENCY_OUTPUT_PERIOD_COUNT, .format = PCM_FORMAT_S16_LE, .start_threshold = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4, .stop_threshold = INT_MAX, .avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4, }; struct pcm_config pcm_config_hdmi_multi = { .channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */ .rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */ .period_size = HDMI_MULTI_PERIOD_SIZE, .period_count = HDMI_MULTI_PERIOD_COUNT, .format = PCM_FORMAT_S16_LE, .start_threshold = 0, .stop_threshold = INT_MAX, .avail_min = 0, }; struct pcm_config pcm_config_audio_capture = { .channels = 2, .period_count = AUDIO_CAPTURE_PERIOD_COUNT, .format = PCM_FORMAT_S16_LE, }; struct pcm_config pcm_config_voice_call = { .channels = 1, .rate = 8000, .period_size = 160, .period_count = 2, .format = PCM_FORMAT_S16_LE, }; static const char * const use_case_table[AUDIO_USECASE_MAX] = { [USECASE_AUDIO_PLAYBACK_DEEP_BUFFER] = "deep-buffer-playback", [USECASE_AUDIO_PLAYBACK_LOW_LATENCY] = "low-latency-playback", [USECASE_AUDIO_PLAYBACK_MULTI_CH] = "multi-channel-playback", [USECASE_AUDIO_RECORD] = "audio-record", [USECASE_AUDIO_RECORD_LOW_LATENCY] = "low-latency-record", [USECASE_VOICE_CALL] = "voice-call", [USECASE_AUDIO_PLAYBACK_OFFLOAD] = "compress-offload-playback", }; #define STRING_TO_ENUM(string) { #string, string } struct string_to_enum { const char *name; uint32_t value; }; static const struct string_to_enum out_channels_name_to_enum_table[] = { STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO), STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1), STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1), }; static int set_voice_volume_l(struct audio_device *adev, float volume); static uint32_t get_offload_buffer_size(); static int set_gapless_mode(struct audio_device *adev); static bool is_supported_format(audio_format_t format) { if (format == AUDIO_FORMAT_MP3 || format == AUDIO_FORMAT_AAC) return true; return false; } static int get_snd_codec_id(audio_format_t format) { int id = 0; switch (format) { case AUDIO_FORMAT_MP3: id = SND_AUDIOCODEC_MP3; break; case AUDIO_FORMAT_AAC: id = SND_AUDIOCODEC_AAC; break; default: ALOGE("%s: Unsupported audio format", __func__); } return id; } static int enable_audio_route(struct audio_device *adev, struct audio_usecase *usecase, bool update_mixer) { snd_device_t snd_device; char mixer_path[50]; if (usecase == NULL) return -EINVAL; ALOGV("%s: enter: usecase(%d)", __func__, usecase->id); if (usecase->type == PCM_CAPTURE) snd_device = usecase->in_snd_device; else snd_device = usecase->out_snd_device; strcpy(mixer_path, use_case_table[usecase->id]); platform_add_backend_name(mixer_path, snd_device); ALOGV("%s: apply mixer path: %s", __func__, mixer_path); audio_route_apply_path(adev->audio_route, mixer_path); if (update_mixer) audio_route_update_mixer(adev->audio_route); ALOGV("%s: exit", __func__); return 0; } static int disable_audio_route(struct audio_device *adev, struct audio_usecase *usecase, bool update_mixer) { snd_device_t snd_device; char mixer_path[50]; if (usecase == NULL) return -EINVAL; ALOGV("%s: enter: usecase(%d)", __func__, usecase->id); if (usecase->type == PCM_CAPTURE) snd_device = usecase->in_snd_device; else snd_device = usecase->out_snd_device; strcpy(mixer_path, use_case_table[usecase->id]); platform_add_backend_name(mixer_path, snd_device); ALOGV("%s: reset mixer path: %s", __func__, mixer_path); audio_route_reset_path(adev->audio_route, mixer_path); if (update_mixer) audio_route_update_mixer(adev->audio_route); ALOGV("%s: exit", __func__); return 0; } static int enable_snd_device(struct audio_device *adev, snd_device_t snd_device, bool update_mixer) { if (snd_device < SND_DEVICE_MIN || snd_device >= SND_DEVICE_MAX) { ALOGE("%s: Invalid sound device %d", __func__, snd_device); return -EINVAL; } adev->snd_dev_ref_cnt[snd_device]++; if (adev->snd_dev_ref_cnt[snd_device] > 1) { ALOGV("%s: snd_device(%d: %s) is already active", __func__, snd_device, platform_get_snd_device_name(snd_device)); return 0; } #ifdef USB_HEADSET_ENABLED /* start usb playback thread */ if(SND_DEVICE_OUT_USB_HEADSET == snd_device || SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET == snd_device) audio_extn_usb_start_playback(adev); /* start usb capture thread */ if(SND_DEVICE_IN_USB_HEADSET_MIC == snd_device) audio_extn_usb_start_capture(adev); #endif if (platform_send_audio_calibration(adev->platform, snd_device) < 0) { adev->snd_dev_ref_cnt[snd_device]--; return -EINVAL; } ALOGV("%s: snd_device(%d: %s)", __func__, snd_device, platform_get_snd_device_name(snd_device)); audio_route_apply_path(adev->audio_route, platform_get_snd_device_name(snd_device)); if (update_mixer) audio_route_update_mixer(adev->audio_route); return 0; } static int disable_snd_device(struct audio_device *adev, snd_device_t snd_device, bool update_mixer) { if (snd_device < SND_DEVICE_MIN || snd_device >= SND_DEVICE_MAX) { ALOGE("%s: Invalid sound device %d", __func__, snd_device); return -EINVAL; } if (adev->snd_dev_ref_cnt[snd_device] <= 0) { ALOGE("%s: device ref cnt is already 0", __func__); return -EINVAL; } adev->snd_dev_ref_cnt[snd_device]--; if (adev->snd_dev_ref_cnt[snd_device] == 0) { ALOGV("%s: snd_device(%d: %s) refcnt=%d", __func__, snd_device, platform_get_snd_device_name(snd_device), adev->snd_dev_ref_cnt[snd_device]); #ifdef USB_HEADSET_ENABLED /* exit usb play back thread */ if(SND_DEVICE_OUT_USB_HEADSET == snd_device || SND_DEVICE_OUT_SPEAKER_AND_USB_HEADSET == snd_device) audio_extn_usb_stop_playback(); /* exit usb capture thread */ if(SND_DEVICE_IN_USB_HEADSET_MIC == snd_device) audio_extn_usb_stop_capture(adev); #endif audio_route_reset_path(adev->audio_route, platform_get_snd_device_name(snd_device)); if (update_mixer) audio_route_update_mixer(adev->audio_route); } return 0; } static void check_usecases_codec_backend(struct audio_device *adev, struct audio_usecase *uc_info, snd_device_t snd_device) { struct listnode *node; struct audio_usecase *usecase; bool switch_device[AUDIO_USECASE_MAX]; int i, num_uc_to_switch = 0; /* * This function is to make sure that all the usecases that are active on * the hardware codec backend are always routed to any one device that is * handled by the hardware codec. * For example, if low-latency and deep-buffer usecases are currently active * on speaker and out_set_parameters(headset) is received on low-latency * output, then we have to make sure deep-buffer is also switched to headset, * because of the limitation that both the devices cannot be enabled * at the same time as they share the same backend. */ /* Disable all the usecases on the shared backend other than the specified usecase */ for (i = 0; i < AUDIO_USECASE_MAX; i++) switch_device[i] = false; list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->type != PCM_CAPTURE && usecase != uc_info && usecase->out_snd_device != snd_device && usecase->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND) { ALOGV("%s: Usecase (%s) is active on (%s) - disabling ..", __func__, use_case_table[usecase->id], platform_get_snd_device_name(usecase->out_snd_device)); disable_audio_route(adev, usecase, false); switch_device[usecase->id] = true; num_uc_to_switch++; } } if (num_uc_to_switch) { /* Make sure all the streams are de-routed before disabling the device */ audio_route_update_mixer(adev->audio_route); list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (switch_device[usecase->id]) { disable_snd_device(adev, usecase->out_snd_device, false); } } list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (switch_device[usecase->id]) { enable_snd_device(adev, snd_device, false); } } /* Make sure new snd device is enabled before re-routing the streams */ audio_route_update_mixer(adev->audio_route); /* Re-route all the usecases on the shared backend other than the specified usecase to new snd devices */ list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); /* Update the out_snd_device only before enabling the audio route */ if (switch_device[usecase->id] ) { usecase->out_snd_device = snd_device; enable_audio_route(adev, usecase, false); } } audio_route_update_mixer(adev->audio_route); } } static void check_and_route_capture_usecases(struct audio_device *adev, struct audio_usecase *uc_info, snd_device_t snd_device) { struct listnode *node; struct audio_usecase *usecase; bool switch_device[AUDIO_USECASE_MAX]; int i, num_uc_to_switch = 0; /* * This function is to make sure that all the active capture usecases * are always routed to the same input sound device. * For example, if audio-record and voice-call usecases are currently * active on speaker(rx) and speaker-mic (tx) and out_set_parameters(earpiece) * is received for voice call then we have to make sure that audio-record * usecase is also switched to earpiece i.e. voice-dmic-ef, * because of the limitation that two devices cannot be enabled * at the same time if they share the same backend. */ for (i = 0; i < AUDIO_USECASE_MAX; i++) switch_device[i] = false; list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->type != PCM_PLAYBACK && usecase != uc_info && usecase->in_snd_device != snd_device) { ALOGV("%s: Usecase (%s) is active on (%s) - disabling ..", __func__, use_case_table[usecase->id], platform_get_snd_device_name(usecase->in_snd_device)); disable_audio_route(adev, usecase, false); switch_device[usecase->id] = true; num_uc_to_switch++; } } if (num_uc_to_switch) { /* Make sure all the streams are de-routed before disabling the device */ audio_route_update_mixer(adev->audio_route); list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (switch_device[usecase->id]) { disable_snd_device(adev, usecase->in_snd_device, false); enable_snd_device(adev, snd_device, false); } } /* Make sure new snd device is enabled before re-routing the streams */ audio_route_update_mixer(adev->audio_route); /* Re-route all the usecases on the shared backend other than the specified usecase to new snd devices */ list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); /* Update the in_snd_device only before enabling the audio route */ if (switch_device[usecase->id] ) { usecase->in_snd_device = snd_device; enable_audio_route(adev, usecase, false); } } audio_route_update_mixer(adev->audio_route); } } /* must be called with hw device mutex locked */ static int read_hdmi_channel_masks(struct stream_out *out) { int ret = 0; int channels = platform_edid_get_max_channels(out->dev->platform); switch (channels) { /* * Do not handle stereo output in Multi-channel cases * Stereo case is handled in normal playback path */ case 6: ALOGV("%s: HDMI supports 5.1", __func__); out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1; break; case 8: ALOGV("%s: HDMI supports 5.1 and 7.1 channels", __func__); out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_5POINT1; out->supported_channel_masks[1] = AUDIO_CHANNEL_OUT_7POINT1; break; default: ALOGE("HDMI does not support multi channel playback"); ret = -ENOSYS; break; } return ret; } static struct audio_usecase *get_usecase_from_list(struct audio_device *adev, audio_usecase_t uc_id) { struct audio_usecase *usecase; struct listnode *node; list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->id == uc_id) return usecase; } return NULL; } static int select_devices(struct audio_device *adev, audio_usecase_t uc_id) { snd_device_t out_snd_device = SND_DEVICE_NONE; snd_device_t in_snd_device = SND_DEVICE_NONE; struct audio_usecase *usecase = NULL; struct audio_usecase *vc_usecase = NULL; struct listnode *node; int status = 0; usecase = get_usecase_from_list(adev, uc_id); if (usecase == NULL) { ALOGE("%s: Could not find the usecase(%d)", __func__, uc_id); return -EINVAL; } if (usecase->type == VOICE_CALL) { out_snd_device = platform_get_output_snd_device(adev->platform, usecase->stream.out->devices); in_snd_device = platform_get_input_snd_device(adev->platform, usecase->stream.out->devices); usecase->devices = usecase->stream.out->devices; } else { /* * If the voice call is active, use the sound devices of voice call usecase * so that it would not result any device switch. All the usecases will * be switched to new device when select_devices() is called for voice call * usecase. This is to avoid switching devices for voice call when * check_usecases_codec_backend() is called below. */ if (adev->in_call) { vc_usecase = get_usecase_from_list(adev, USECASE_VOICE_CALL); if (vc_usecase->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND) { in_snd_device = vc_usecase->in_snd_device; out_snd_device = vc_usecase->out_snd_device; } } if (usecase->type == PCM_PLAYBACK) { usecase->devices = usecase->stream.out->devices; in_snd_device = SND_DEVICE_NONE; if (out_snd_device == SND_DEVICE_NONE) { out_snd_device = platform_get_output_snd_device(adev->platform, usecase->stream.out->devices); if (usecase->stream.out == adev->primary_output && adev->active_input && adev->active_input->source == AUDIO_SOURCE_VOICE_COMMUNICATION) { select_devices(adev, adev->active_input->usecase); } } } else if (usecase->type == PCM_CAPTURE) { usecase->devices = usecase->stream.in->device; out_snd_device = SND_DEVICE_NONE; if (in_snd_device == SND_DEVICE_NONE) { if (adev->active_input->source == AUDIO_SOURCE_VOICE_COMMUNICATION && adev->primary_output && !adev->primary_output->standby) { in_snd_device = platform_get_input_snd_device(adev->platform, adev->primary_output->devices); } else { in_snd_device = platform_get_input_snd_device(adev->platform, AUDIO_DEVICE_NONE); } } } } if (out_snd_device == usecase->out_snd_device && in_snd_device == usecase->in_snd_device) { return 0; } ALOGD("%s: out_snd_device(%d: %s) in_snd_device(%d: %s)", __func__, out_snd_device, platform_get_snd_device_name(out_snd_device), in_snd_device, platform_get_snd_device_name(in_snd_device)); /* * Limitation: While in call, to do a device switch we need to disable * and enable both RX and TX devices though one of them is same as current * device. */ if (usecase->type == VOICE_CALL) { status = platform_switch_voice_call_device_pre(adev->platform); } /* Disable current sound devices */ if (usecase->out_snd_device != SND_DEVICE_NONE) { disable_audio_route(adev, usecase, true); disable_snd_device(adev, usecase->out_snd_device, false); } if (usecase->in_snd_device != SND_DEVICE_NONE) { disable_audio_route(adev, usecase, true); disable_snd_device(adev, usecase->in_snd_device, false); } /* Enable new sound devices */ if (out_snd_device != SND_DEVICE_NONE) { if (usecase->devices & AUDIO_DEVICE_OUT_ALL_CODEC_BACKEND) check_usecases_codec_backend(adev, usecase, out_snd_device); enable_snd_device(adev, out_snd_device, false); } if (in_snd_device != SND_DEVICE_NONE) { check_and_route_capture_usecases(adev, usecase, in_snd_device); enable_snd_device(adev, in_snd_device, false); } if (usecase->type == VOICE_CALL) status = platform_switch_voice_call_device_post(adev->platform, out_snd_device, in_snd_device); audio_route_update_mixer(adev->audio_route); usecase->in_snd_device = in_snd_device; usecase->out_snd_device = out_snd_device; enable_audio_route(adev, usecase, true); return status; } static int stop_input_stream(struct stream_in *in) { int i, ret = 0; struct audio_usecase *uc_info; struct audio_device *adev = in->dev; adev->active_input = NULL; ALOGV("%s: enter: usecase(%d: %s)", __func__, in->usecase, use_case_table[in->usecase]); uc_info = get_usecase_from_list(adev, in->usecase); if (uc_info == NULL) { ALOGE("%s: Could not find the usecase (%d) in the list", __func__, in->usecase); return -EINVAL; } /* 1. Disable stream specific mixer controls */ disable_audio_route(adev, uc_info, true); /* 2. Disable the tx device */ disable_snd_device(adev, uc_info->in_snd_device, true); list_remove(&uc_info->list); free(uc_info); ALOGV("%s: exit: status(%d)", __func__, ret); return ret; } int start_input_stream(struct stream_in *in) { /* 1. Enable output device and stream routing controls */ int ret = 0; struct audio_usecase *uc_info; struct audio_device *adev = in->dev; ALOGV("%s: enter: usecase(%d)", __func__, in->usecase); in->pcm_device_id = platform_get_pcm_device_id(in->usecase, PCM_CAPTURE); if (in->pcm_device_id < 0) { ALOGE("%s: Could not find PCM device id for the usecase(%d)", __func__, in->usecase); ret = -EINVAL; goto error_config; } adev->active_input = in; uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase)); uc_info->id = in->usecase; uc_info->type = PCM_CAPTURE; uc_info->stream.in = in; uc_info->devices = in->device; uc_info->in_snd_device = SND_DEVICE_NONE; uc_info->out_snd_device = SND_DEVICE_NONE; list_add_tail(&adev->usecase_list, &uc_info->list); select_devices(adev, in->usecase); ALOGV("%s: Opening PCM device card_id(%d) device_id(%d), channels %d", __func__, SOUND_CARD, in->pcm_device_id, in->config.channels); in->pcm = pcm_open(SOUND_CARD, in->pcm_device_id, PCM_IN, &in->config); if (in->pcm && !pcm_is_ready(in->pcm)) { ALOGE("%s: %s", __func__, pcm_get_error(in->pcm)); pcm_close(in->pcm); in->pcm = NULL; ret = -EIO; goto error_open; } ALOGV("%s: exit", __func__); return ret; error_open: stop_input_stream(in); error_config: adev->active_input = NULL; ALOGD("%s: exit: status(%d)", __func__, ret); return ret; } /* must be called with out->lock locked */ static int send_offload_cmd_l(struct stream_out* out, int command) { struct offload_cmd *cmd = (struct offload_cmd *)calloc(1, sizeof(struct offload_cmd)); ALOGVV("%s %d", __func__, command); cmd->cmd = command; list_add_tail(&out->offload_cmd_list, &cmd->node); pthread_cond_signal(&out->offload_cond); return 0; } /* must be called iwth out->lock locked */ static void stop_compressed_output_l(struct stream_out *out) { out->offload_state = OFFLOAD_STATE_IDLE; out->playback_started = 0; out->send_new_metadata = 1; if (out->compr != NULL) { compress_stop(out->compr); while (out->offload_thread_blocked) { pthread_cond_wait(&out->cond, &out->lock); } } } static void *offload_thread_loop(void *context) { struct stream_out *out = (struct stream_out *) context; struct listnode *item; setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_AUDIO); set_sched_policy(0, SP_FOREGROUND); prctl(PR_SET_NAME, (unsigned long)"Offload Callback", 0, 0, 0); ALOGV("%s", __func__); pthread_mutex_lock(&out->lock); for (;;) { struct offload_cmd *cmd = NULL; stream_callback_event_t event; bool send_callback = false; ALOGVV("%s offload_cmd_list %d out->offload_state %d", __func__, list_empty(&out->offload_cmd_list), out->offload_state); if (list_empty(&out->offload_cmd_list)) { ALOGV("%s SLEEPING", __func__); pthread_cond_wait(&out->offload_cond, &out->lock); ALOGV("%s RUNNING", __func__); continue; } item = list_head(&out->offload_cmd_list); cmd = node_to_item(item, struct offload_cmd, node); list_remove(item); ALOGVV("%s STATE %d CMD %d out->compr %p", __func__, out->offload_state, cmd->cmd, out->compr); if (cmd->cmd == OFFLOAD_CMD_EXIT) { free(cmd); break; } if (out->compr == NULL) { ALOGE("%s: Compress handle is NULL", __func__); pthread_cond_signal(&out->cond); continue; } out->offload_thread_blocked = true; pthread_mutex_unlock(&out->lock); send_callback = false; switch(cmd->cmd) { case OFFLOAD_CMD_WAIT_FOR_BUFFER: compress_wait(out->compr, -1); send_callback = true; event = STREAM_CBK_EVENT_WRITE_READY; break; case OFFLOAD_CMD_PARTIAL_DRAIN: compress_next_track(out->compr); compress_partial_drain(out->compr); send_callback = true; event = STREAM_CBK_EVENT_DRAIN_READY; break; case OFFLOAD_CMD_DRAIN: compress_drain(out->compr); send_callback = true; event = STREAM_CBK_EVENT_DRAIN_READY; break; default: ALOGE("%s unknown command received: %d", __func__, cmd->cmd); break; } pthread_mutex_lock(&out->lock); out->offload_thread_blocked = false; pthread_cond_signal(&out->cond); if (send_callback) { out->offload_callback(event, NULL, out->offload_cookie); } free(cmd); } pthread_cond_signal(&out->cond); while (!list_empty(&out->offload_cmd_list)) { item = list_head(&out->offload_cmd_list); list_remove(item); free(node_to_item(item, struct offload_cmd, node)); } pthread_mutex_unlock(&out->lock); return NULL; } static int create_offload_callback_thread(struct stream_out *out) { pthread_cond_init(&out->offload_cond, (const pthread_condattr_t *) NULL); list_init(&out->offload_cmd_list); pthread_create(&out->offload_thread, (const pthread_attr_t *) NULL, offload_thread_loop, out); return 0; } static int destroy_offload_callback_thread(struct stream_out *out) { pthread_mutex_lock(&out->lock); stop_compressed_output_l(out); send_offload_cmd_l(out, OFFLOAD_CMD_EXIT); pthread_mutex_unlock(&out->lock); pthread_join(out->offload_thread, (void **) NULL); pthread_cond_destroy(&out->offload_cond); return 0; } static bool allow_hdmi_channel_config(struct audio_device *adev) { struct listnode *node; struct audio_usecase *usecase; bool ret = true; list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) { /* * If voice call is already existing, do not proceed further to avoid * disabling/enabling both RX and TX devices, CSD calls, etc. * Once the voice call done, the HDMI channels can be configured to * max channels of remaining use cases. */ if (usecase->id == USECASE_VOICE_CALL) { ALOGD("%s: voice call is active, no change in HDMI channels", __func__); ret = false; break; } else if (usecase->id == USECASE_AUDIO_PLAYBACK_MULTI_CH) { ALOGD("%s: multi channel playback is active, " "no change in HDMI channels", __func__); ret = false; break; } } } return ret; } static int check_and_set_hdmi_channels(struct audio_device *adev, unsigned int channels) { struct listnode *node; struct audio_usecase *usecase; /* Check if change in HDMI channel config is allowed */ if (!allow_hdmi_channel_config(adev)) return 0; if (channels == adev->cur_hdmi_channels) { ALOGD("%s: Requested channels are same as current channels(%d)", __func__, channels); return 0; } platform_set_hdmi_channels(adev->platform, channels); adev->cur_hdmi_channels = channels; /* * Deroute all the playback streams routed to HDMI so that * the back end is deactivated. Note that backend will not * be deactivated if any one stream is connected to it. */ list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->type == PCM_PLAYBACK && usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) { disable_audio_route(adev, usecase, true); } } /* * Enable all the streams disabled above. Now the HDMI backend * will be activated with new channel configuration */ list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->type == PCM_PLAYBACK && usecase->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) { enable_audio_route(adev, usecase, true); } } return 0; } static int stop_output_stream(struct stream_out *out) { int i, ret = 0; struct audio_usecase *uc_info; struct audio_device *adev = out->dev; ALOGV("%s: enter: usecase(%d: %s)", __func__, out->usecase, use_case_table[out->usecase]); uc_info = get_usecase_from_list(adev, out->usecase); if (uc_info == NULL) { ALOGE("%s: Could not find the usecase (%d) in the list", __func__, out->usecase); return -EINVAL; } if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { if (adev->visualizer_stop_output != NULL) adev->visualizer_stop_output(out->handle, out->pcm_device_id); if (adev->offload_effects_stop_output != NULL) adev->offload_effects_stop_output(out->handle, out->pcm_device_id); } /* 1. Get and set stream specific mixer controls */ disable_audio_route(adev, uc_info, true); /* 2. Disable the rx device */ disable_snd_device(adev, uc_info->out_snd_device, true); list_remove(&uc_info->list); free(uc_info); /* Must be called after removing the usecase from list */ if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) check_and_set_hdmi_channels(adev, DEFAULT_HDMI_OUT_CHANNELS); ALOGV("%s: exit: status(%d)", __func__, ret); return ret; } int start_output_stream(struct stream_out *out) { int ret = 0; struct audio_usecase *uc_info; struct audio_device *adev = out->dev; ALOGV("%s: enter: usecase(%d: %s) devices(%#x)", __func__, out->usecase, use_case_table[out->usecase], out->devices); out->pcm_device_id = platform_get_pcm_device_id(out->usecase, PCM_PLAYBACK); if (out->pcm_device_id < 0) { ALOGE("%s: Invalid PCM device id(%d) for the usecase(%d)", __func__, out->pcm_device_id, out->usecase); ret = -EINVAL; goto error_config; } uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase)); uc_info->id = out->usecase; uc_info->type = PCM_PLAYBACK; uc_info->stream.out = out; uc_info->devices = out->devices; uc_info->in_snd_device = SND_DEVICE_NONE; uc_info->out_snd_device = SND_DEVICE_NONE; /* This must be called before adding this usecase to the list */ if (out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) { if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) check_and_set_hdmi_channels(adev, out->compr_config.codec->ch_in); else check_and_set_hdmi_channels(adev, out->config.channels); } list_add_tail(&adev->usecase_list, &uc_info->list); select_devices(adev, out->usecase); ALOGV("%s: Opening PCM device card_id(%d) device_id(%d)", __func__, 0, out->pcm_device_id); if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) { out->pcm = pcm_open(SOUND_CARD, out->pcm_device_id, PCM_OUT | PCM_MONOTONIC, &out->config); if (out->pcm && !pcm_is_ready(out->pcm)) { ALOGE("%s: %s", __func__, pcm_get_error(out->pcm)); pcm_close(out->pcm); out->pcm = NULL; ret = -EIO; goto error_open; } } else { out->pcm = NULL; out->compr = compress_open(SOUND_CARD, out->pcm_device_id, COMPRESS_IN, &out->compr_config); if (out->compr && !is_compress_ready(out->compr)) { ALOGE("%s: %s", __func__, compress_get_error(out->compr)); compress_close(out->compr); out->compr = NULL; ret = -EIO; goto error_open; } if (out->offload_callback) compress_nonblock(out->compr, out->non_blocking); if (adev->visualizer_start_output != NULL) adev->visualizer_start_output(out->handle, out->pcm_device_id); if (adev->offload_effects_start_output != NULL) adev->offload_effects_start_output(out->handle, out->pcm_device_id); } ALOGV("%s: exit", __func__); return 0; error_open: stop_output_stream(out); error_config: return ret; } static int stop_voice_call(struct audio_device *adev) { int i, ret = 0; struct audio_usecase *uc_info; ALOGV("%s: enter", __func__); adev->in_call = false; ret = platform_stop_voice_call(adev->platform); /* 1. Close the PCM devices */ if (adev->voice_call_rx) { pcm_close(adev->voice_call_rx); adev->voice_call_rx = NULL; } if (adev->voice_call_tx) { pcm_close(adev->voice_call_tx); adev->voice_call_tx = NULL; } uc_info = get_usecase_from_list(adev, USECASE_VOICE_CALL); if (uc_info == NULL) { ALOGE("%s: Could not find the usecase (%d) in the list", __func__, USECASE_VOICE_CALL); return -EINVAL; } /* 2. Get and set stream specific mixer controls */ disable_audio_route(adev, uc_info, true); /* 3. Disable the rx and tx devices */ disable_snd_device(adev, uc_info->out_snd_device, false); disable_snd_device(adev, uc_info->in_snd_device, true); list_remove(&uc_info->list); free(uc_info); ALOGV("%s: exit: status(%d)", __func__, ret); return ret; } static int start_voice_call(struct audio_device *adev) { int i, ret = 0; struct audio_usecase *uc_info; int pcm_dev_rx_id, pcm_dev_tx_id; ALOGV("%s: enter", __func__); uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase)); uc_info->id = USECASE_VOICE_CALL; uc_info->type = VOICE_CALL; uc_info->stream.out = adev->primary_output; uc_info->devices = adev->primary_output->devices; uc_info->in_snd_device = SND_DEVICE_NONE; uc_info->out_snd_device = SND_DEVICE_NONE; list_add_tail(&adev->usecase_list, &uc_info->list); select_devices(adev, USECASE_VOICE_CALL); pcm_dev_rx_id = platform_get_pcm_device_id(uc_info->id, PCM_PLAYBACK); pcm_dev_tx_id = platform_get_pcm_device_id(uc_info->id, PCM_CAPTURE); if (pcm_dev_rx_id < 0 || pcm_dev_tx_id < 0) { ALOGE("%s: Invalid PCM devices (rx: %d tx: %d) for the usecase(%d)", __func__, pcm_dev_rx_id, pcm_dev_tx_id, uc_info->id); ret = -EIO; goto error_start_voice; } ALOGV("%s: Opening PCM playback device card_id(%d) device_id(%d)", __func__, SOUND_CARD, pcm_dev_rx_id); adev->voice_call_rx = pcm_open(SOUND_CARD, pcm_dev_rx_id, PCM_OUT | PCM_MONOTONIC, &pcm_config_voice_call); if (adev->voice_call_rx && !pcm_is_ready(adev->voice_call_rx)) { ALOGE("%s: %s", __func__, pcm_get_error(adev->voice_call_rx)); ret = -EIO; goto error_start_voice; } ALOGV("%s: Opening PCM capture device card_id(%d) device_id(%d)", __func__, SOUND_CARD, pcm_dev_tx_id); adev->voice_call_tx = pcm_open(SOUND_CARD, pcm_dev_tx_id, PCM_IN, &pcm_config_voice_call); if (adev->voice_call_tx && !pcm_is_ready(adev->voice_call_tx)) { ALOGE("%s: %s", __func__, pcm_get_error(adev->voice_call_tx)); ret = -EIO; goto error_start_voice; } /* set cached volume */ set_voice_volume_l(adev, adev->voice_volume); pcm_start(adev->voice_call_rx); pcm_start(adev->voice_call_tx); ret = platform_start_voice_call(adev->platform); if (ret < 0) { ALOGE("%s: platform_start_voice_call error %d\n", __func__, ret); goto error_start_voice; } adev->in_call = true; return 0; error_start_voice: stop_voice_call(adev); ALOGD("%s: exit: status(%d)", __func__, ret); return ret; } static int check_input_parameters(uint32_t sample_rate, audio_format_t format, int channel_count) { int ret = 0; if (format != AUDIO_FORMAT_PCM_16_BIT) ret = -EINVAL; switch (channel_count) { case 1: case 2: case 6: break; default: ret = -EINVAL; } switch (sample_rate) { case 8000: case 11025: case 12000: case 16000: case 22050: case 24000: case 32000: case 44100: case 48000: break; default: ret = -EINVAL; } return ret; } static size_t get_input_buffer_size(uint32_t sample_rate, audio_format_t format, int channel_count) { size_t size = 0; if (check_input_parameters(sample_rate, format, channel_count) != 0) return 0; size = (sample_rate * AUDIO_CAPTURE_PERIOD_DURATION_MSEC) / 1000; /* ToDo: should use frame_size computed based on the format and channel_count here. */ size *= sizeof(short) * channel_count; /* make sure the size is multiple of 64 */ size += 0x3f; size &= ~0x3f; return size; } static uint32_t out_get_sample_rate(const struct audio_stream *stream) { struct stream_out *out = (struct stream_out *)stream; return out->sample_rate; } static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate) { return -ENOSYS; } static size_t out_get_buffer_size(const struct audio_stream *stream) { struct stream_out *out = (struct stream_out *)stream; if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { return out->compr_config.fragment_size; } return out->config.period_size * audio_stream_frame_size(stream); } static uint32_t out_get_channels(const struct audio_stream *stream) { struct stream_out *out = (struct stream_out *)stream; return out->channel_mask; } static audio_format_t out_get_format(const struct audio_stream *stream) { struct stream_out *out = (struct stream_out *)stream; return out->format; } static int out_set_format(struct audio_stream *stream, audio_format_t format) { return -ENOSYS; } static int out_standby(struct audio_stream *stream) { struct stream_out *out = (struct stream_out *)stream; struct audio_device *adev = out->dev; ALOGV("%s: enter: usecase(%d: %s)", __func__, out->usecase, use_case_table[out->usecase]); pthread_mutex_lock(&out->lock); if (!out->standby) { pthread_mutex_lock(&adev->lock); out->standby = true; if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) { if (out->pcm) { pcm_close(out->pcm); out->pcm = NULL; } } else { stop_compressed_output_l(out); out->gapless_mdata.encoder_delay = 0; out->gapless_mdata.encoder_padding = 0; if (out->compr != NULL) { compress_close(out->compr); out->compr = NULL; } } stop_output_stream(out); pthread_mutex_unlock(&adev->lock); } pthread_mutex_unlock(&out->lock); ALOGV("%s: exit", __func__); return 0; } static int out_dump(const struct audio_stream *stream, int fd) { return 0; } static int parse_compress_metadata(struct stream_out *out, struct str_parms *parms) { int ret = 0; char value[32]; bool is_meta_data_params = false; struct compr_gapless_mdata tmp_mdata; tmp_mdata.encoder_delay = 0; tmp_mdata.encoder_padding = 0; if (!out || !parms) { ALOGE("%s: return invalid ",__func__); return -EINVAL; } ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_SAMPLE_RATE, value, sizeof(value)); if(ret >= 0) is_meta_data_params = true; ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_NUM_CHANNEL, value, sizeof(value)); if(ret >= 0 ) is_meta_data_params = true; ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_AVG_BIT_RATE, value, sizeof(value)); if(ret >= 0 ) is_meta_data_params = true; ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_DELAY_SAMPLES, value, sizeof(value)); if (ret >= 0) { is_meta_data_params = true; tmp_mdata.encoder_delay = atoi(value); //whats a good limit check? } ret = str_parms_get_str(parms, AUDIO_OFFLOAD_CODEC_PADDING_SAMPLES, value, sizeof(value)); if (ret >= 0) { is_meta_data_params = true; tmp_mdata.encoder_padding = atoi(value); } if(!is_meta_data_params) { ALOGV("%s: Not gapless meta data params", __func__); return 0; } out->gapless_mdata = tmp_mdata; out->send_new_metadata = 1; ALOGV("%s new encoder delay %u and padding %u", __func__, out->gapless_mdata.encoder_delay, out->gapless_mdata.encoder_padding); return 0; } static int out_set_parameters(struct audio_stream *stream, const char *kvpairs) { struct stream_out *out = (struct stream_out *)stream; struct audio_device *adev = out->dev; struct audio_usecase *usecase; struct listnode *node; struct str_parms *parms; char value[32]; int ret = 0, val = 0, err; bool select_new_device = false; ALOGD("%s: enter: usecase(%d: %s) kvpairs: %s", __func__, out->usecase, use_case_table[out->usecase], kvpairs); parms = str_parms_create_str(kvpairs); err = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value)); if (err >= 0) { val = atoi(value); pthread_mutex_lock(&out->lock); pthread_mutex_lock(&adev->lock); /* * When HDMI cable is unplugged the music playback is paused and * the policy manager sends routing=0. But the audioflinger * continues to write data until standby time (3sec). * As the HDMI core is turned off, the write gets blocked. * Avoid this by routing audio to speaker until standby. */ if (out->devices == AUDIO_DEVICE_OUT_AUX_DIGITAL && val == AUDIO_DEVICE_NONE) { val = AUDIO_DEVICE_OUT_SPEAKER; } /* * select_devices() call below switches all the usecases on the same * backend to the new device. Refer to check_usecases_codec_backend() in * the select_devices(). But how do we undo this? * * For example, music playback is active on headset (deep-buffer usecase) * and if we go to ringtones and select a ringtone, low-latency usecase * will be started on headset+speaker. As we can't enable headset+speaker * and headset devices at the same time, select_devices() switches the music * playback to headset+speaker while starting low-lateny usecase for ringtone. * So when the ringtone playback is completed, how do we undo the same? * * We are relying on the out_set_parameters() call on deep-buffer output, * once the ringtone playback is ended. * NOTE: We should not check if the current devices are same as new devices. * Because select_devices() must be called to switch back the music * playback to headset. */ if (val != 0) { out->devices = val; if (!out->standby) select_devices(adev, out->usecase); if ((adev->mode == AUDIO_MODE_IN_CALL) && !adev->in_call && (out == adev->primary_output)) { ret = start_voice_call(adev); } else if ((adev->mode == AUDIO_MODE_IN_CALL) && adev->in_call && (out == adev->primary_output)) { ret = select_devices(adev, USECASE_VOICE_CALL); } } if ((adev->mode == AUDIO_MODE_NORMAL) && adev->in_call && (out == adev->primary_output)) { ret = stop_voice_call(adev); } pthread_mutex_unlock(&adev->lock); pthread_mutex_unlock(&out->lock); } if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { pthread_mutex_lock(&out->lock); parse_compress_metadata(out, parms); pthread_mutex_unlock(&out->lock); } str_parms_destroy(parms); ALOGV("%s: exit: code(%d)", __func__, ret); return ret; } static char* out_get_parameters(const struct audio_stream *stream, const char *keys) { struct stream_out *out = (struct stream_out *)stream; struct str_parms *query = str_parms_create_str(keys); char *str; char value[256]; struct str_parms *reply = str_parms_create(); size_t i, j; int ret; bool first = true; ALOGV("%s: enter: keys - %s", __func__, keys); ret = str_parms_get_str(query, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value, sizeof(value)); if (ret >= 0) { value[0] = '\0'; i = 0; while (out->supported_channel_masks[i] != 0) { for (j = 0; j < ARRAY_SIZE(out_channels_name_to_enum_table); j++) { if (out_channels_name_to_enum_table[j].value == out->supported_channel_masks[i]) { if (!first) { strcat(value, "|"); } strcat(value, out_channels_name_to_enum_table[j].name); first = false; break; } } i++; } str_parms_add_str(reply, AUDIO_PARAMETER_STREAM_SUP_CHANNELS, value); str = str_parms_to_str(reply); } else { str = strdup(keys); } str_parms_destroy(query); str_parms_destroy(reply); ALOGV("%s: exit: returns - %s", __func__, str); return str; } static uint32_t out_get_latency(const struct audio_stream_out *stream) { struct stream_out *out = (struct stream_out *)stream; if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) return COMPRESS_OFFLOAD_PLAYBACK_LATENCY; return (out->config.period_count * out->config.period_size * 1000) / (out->config.rate); } static int out_set_volume(struct audio_stream_out *stream, float left, float right) { struct stream_out *out = (struct stream_out *)stream; int volume[2]; if (out->usecase == USECASE_AUDIO_PLAYBACK_MULTI_CH) { /* only take left channel into account: the API is for stereo anyway */ out->muted = (left == 0.0f); return 0; } else if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { #ifdef DYNAMIC_VOLUME_MIXER char mixer_ctl_name[128]; #else const char *mixer_ctl_name = "Compress Playback Volume"; #endif struct audio_device *adev = out->dev; struct mixer_ctl *ctl; #ifdef DYNAMIC_VOLUME_MIXER int pcm_device_id = platform_get_pcm_device_id(out->usecase, PCM_PLAYBACK); snprintf(mixer_ctl_name, sizeof(mixer_ctl_name), "Compress Playback %d Volume", pcm_device_id); #endif ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name); if (!ctl) { ALOGE("%s: Could not get ctl for mixer cmd - %s", __func__, mixer_ctl_name); return -EINVAL; } volume[0] = (int)(left * COMPRESS_PLAYBACK_VOLUME_MAX); volume[1] = (int)(right * COMPRESS_PLAYBACK_VOLUME_MAX); mixer_ctl_set_array(ctl, volume, sizeof(volume)/sizeof(volume[0])); return 0; } return -ENOSYS; } static ssize_t out_write(struct audio_stream_out *stream, const void *buffer, size_t bytes) { struct stream_out *out = (struct stream_out *)stream; struct audio_device *adev = out->dev; ssize_t ret = 0; pthread_mutex_lock(&out->lock); if (out->standby) { out->standby = false; pthread_mutex_lock(&adev->lock); ret = start_output_stream(out); pthread_mutex_unlock(&adev->lock); /* ToDo: If use case is compress offload should return 0 */ if (ret != 0) { out->standby = true; goto exit; } } if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { ALOGVV("%s: writing buffer (%d bytes) to compress device", __func__, bytes); if (out->send_new_metadata) { ALOGVV("send new gapless metadata"); compress_set_gapless_metadata(out->compr, &out->gapless_mdata); out->send_new_metadata = 0; } ret = compress_write(out->compr, buffer, bytes); ALOGVV("%s: writing buffer (%d bytes) to compress device returned %d", __func__, bytes, ret); if (ret >= 0 && ret < (ssize_t)bytes) { send_offload_cmd_l(out, OFFLOAD_CMD_WAIT_FOR_BUFFER); } if (!out->playback_started) { compress_start(out->compr); out->playback_started = 1; out->offload_state = OFFLOAD_STATE_PLAYING; } pthread_mutex_unlock(&out->lock); return ret; } else { if (out->pcm) { if (out->muted) memset((void *)buffer, 0, bytes); ALOGVV("%s: writing buffer (%d bytes) to pcm device", __func__, bytes); ret = pcm_write(out->pcm, (void *)buffer, bytes); if (ret == 0) out->written += bytes / (out->config.channels * sizeof(short)); } } exit: pthread_mutex_unlock(&out->lock); if (ret != 0) { if (out->pcm) ALOGE("%s: error %d - %s", __func__, ret, pcm_get_error(out->pcm)); out_standby(&out->stream.common); usleep(bytes * 1000000 / audio_stream_frame_size(&out->stream.common) / out_get_sample_rate(&out->stream.common)); } return bytes; } static int out_get_render_position(const struct audio_stream_out *stream, uint32_t *dsp_frames) { struct stream_out *out = (struct stream_out *)stream; *dsp_frames = 0; if ((out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) && (dsp_frames != NULL)) { pthread_mutex_lock(&out->lock); if (out->compr != NULL) { compress_get_tstamp(out->compr, (unsigned long *)dsp_frames, &out->sample_rate); ALOGVV("%s rendered frames %d sample_rate %d", __func__, *dsp_frames, out->sample_rate); } pthread_mutex_unlock(&out->lock); return 0; } else return -EINVAL; } static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect) { return 0; } static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect) { return 0; } static int out_get_next_write_timestamp(const struct audio_stream_out *stream, int64_t *timestamp) { return -EINVAL; } static int out_get_presentation_position(const struct audio_stream_out *stream, uint64_t *frames, struct timespec *timestamp) { struct stream_out *out = (struct stream_out *)stream; int ret = -1; unsigned long dsp_frames; pthread_mutex_lock(&out->lock); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { if (out->compr != NULL) { compress_get_tstamp(out->compr, &dsp_frames, &out->sample_rate); ALOGVV("%s rendered frames %ld sample_rate %d", __func__, dsp_frames, out->sample_rate); *frames = dsp_frames; ret = 0; /* this is the best we can do */ clock_gettime(CLOCK_MONOTONIC, timestamp); } } else { if (out->pcm) { size_t avail; if (pcm_get_htimestamp(out->pcm, &avail, timestamp) == 0) { size_t kernel_buffer_size = out->config.period_size * out->config.period_count; int64_t signed_frames = out->written - kernel_buffer_size + avail; // This adjustment accounts for buffering after app processor. // It is based on estimated DSP latency per use case, rather than exact. signed_frames -= (platform_render_latency(out->usecase) * out->sample_rate / 1000000LL); // It would be unusual for this value to be negative, but check just in case ... if (signed_frames >= 0) { *frames = signed_frames; ret = 0; } } } } pthread_mutex_unlock(&out->lock); return ret; } static int out_set_callback(struct audio_stream_out *stream, stream_callback_t callback, void *cookie) { struct stream_out *out = (struct stream_out *)stream; ALOGV("%s", __func__); pthread_mutex_lock(&out->lock); out->offload_callback = callback; out->offload_cookie = cookie; pthread_mutex_unlock(&out->lock); return 0; } static int out_pause(struct audio_stream_out* stream) { struct stream_out *out = (struct stream_out *)stream; int status = -ENOSYS; ALOGV("%s", __func__); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { pthread_mutex_lock(&out->lock); if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PLAYING) { status = compress_pause(out->compr); out->offload_state = OFFLOAD_STATE_PAUSED; } pthread_mutex_unlock(&out->lock); } return status; } static int out_resume(struct audio_stream_out* stream) { struct stream_out *out = (struct stream_out *)stream; int status = -ENOSYS; ALOGV("%s", __func__); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { status = 0; pthread_mutex_lock(&out->lock); if (out->compr != NULL && out->offload_state == OFFLOAD_STATE_PAUSED) { status = compress_resume(out->compr); out->offload_state = OFFLOAD_STATE_PLAYING; } pthread_mutex_unlock(&out->lock); } return status; } static int out_drain(struct audio_stream_out* stream, audio_drain_type_t type ) { struct stream_out *out = (struct stream_out *)stream; int status = -ENOSYS; ALOGV("%s", __func__); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { pthread_mutex_lock(&out->lock); if (type == AUDIO_DRAIN_EARLY_NOTIFY) status = send_offload_cmd_l(out, OFFLOAD_CMD_PARTIAL_DRAIN); else status = send_offload_cmd_l(out, OFFLOAD_CMD_DRAIN); pthread_mutex_unlock(&out->lock); } return status; } static int out_flush(struct audio_stream_out* stream) { struct stream_out *out = (struct stream_out *)stream; ALOGV("%s", __func__); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { pthread_mutex_lock(&out->lock); stop_compressed_output_l(out); pthread_mutex_unlock(&out->lock); return 0; } return -ENOSYS; } /** audio_stream_in implementation **/ static uint32_t in_get_sample_rate(const struct audio_stream *stream) { struct stream_in *in = (struct stream_in *)stream; return in->config.rate; } static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate) { return -ENOSYS; } static size_t in_get_buffer_size(const struct audio_stream *stream) { struct stream_in *in = (struct stream_in *)stream; return in->config.period_size * audio_stream_frame_size(stream); } static uint32_t in_get_channels(const struct audio_stream *stream) { struct stream_in *in = (struct stream_in *)stream; return in->channel_mask; } static audio_format_t in_get_format(const struct audio_stream *stream) { return AUDIO_FORMAT_PCM_16_BIT; } static int in_set_format(struct audio_stream *stream, audio_format_t format) { return -ENOSYS; } static int in_standby(struct audio_stream *stream) { struct stream_in *in = (struct stream_in *)stream; struct audio_device *adev = in->dev; int status = 0; ALOGV("%s: enter", __func__); pthread_mutex_lock(&in->lock); if (!in->standby) { pthread_mutex_lock(&adev->lock); in->standby = true; if (in->pcm) { pcm_close(in->pcm); in->pcm = NULL; } status = stop_input_stream(in); pthread_mutex_unlock(&adev->lock); } pthread_mutex_unlock(&in->lock); ALOGV("%s: exit: status(%d)", __func__, status); return status; } static int in_dump(const struct audio_stream *stream, int fd) { return 0; } static int in_set_parameters(struct audio_stream *stream, const char *kvpairs) { struct stream_in *in = (struct stream_in *)stream; struct audio_device *adev = in->dev; struct str_parms *parms; char *str; char value[32]; int ret = 0, val = 0, err; ALOGV("%s: enter: kvpairs=%s", __func__, kvpairs); parms = str_parms_create_str(kvpairs); pthread_mutex_lock(&in->lock); pthread_mutex_lock(&adev->lock); err = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_INPUT_SOURCE, value, sizeof(value)); if (err >= 0) { val = atoi(value); /* no audio source uses val == 0 */ if ((in->source != val) && (val != 0)) { in->source = val; } } err = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, value, sizeof(value)); if (err >= 0) { val = atoi(value); if ((in->device != val) && (val != 0)) { in->device = val; /* If recording is in progress, change the tx device to new device */ if (!in->standby) ret = select_devices(adev, in->usecase); } } pthread_mutex_unlock(&adev->lock); pthread_mutex_unlock(&in->lock); str_parms_destroy(parms); ALOGV("%s: exit: status(%d)", __func__, ret); return ret; } static char* in_get_parameters(const struct audio_stream *stream, const char *keys) { return strdup(""); } static int in_set_gain(struct audio_stream_in *stream, float gain) { return 0; } static ssize_t in_read(struct audio_stream_in *stream, void *buffer, size_t bytes) { struct stream_in *in = (struct stream_in *)stream; struct audio_device *adev = in->dev; int i, ret = -1; pthread_mutex_lock(&in->lock); if (in->standby) { pthread_mutex_lock(&adev->lock); ret = start_input_stream(in); pthread_mutex_unlock(&adev->lock); if (ret != 0) { goto exit; } in->standby = 0; } if (in->pcm) { ret = pcm_read(in->pcm, buffer, bytes); } /* * Instead of writing zeroes here, we could trust the hardware * to always provide zeroes when muted. */ if (ret == 0 && adev->mic_mute) memset(buffer, 0, bytes); exit: pthread_mutex_unlock(&in->lock); if (ret != 0) { in_standby(&in->stream.common); ALOGV("%s: read failed - sleeping for buffer duration", __func__); usleep(bytes * 1000000 / audio_stream_frame_size(&in->stream.common) / in_get_sample_rate(&in->stream.common)); } return bytes; } static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream) { return 0; } static int add_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect, bool enable) { struct stream_in *in = (struct stream_in *)stream; int status = 0; effect_descriptor_t desc; status = (*effect)->get_descriptor(effect, &desc); if (status != 0) return status; pthread_mutex_lock(&in->lock); pthread_mutex_lock(&in->dev->lock); if ((in->source == AUDIO_SOURCE_VOICE_COMMUNICATION) && in->enable_aec != enable && (memcmp(&desc.type, FX_IID_AEC, sizeof(effect_uuid_t)) == 0)) { in->enable_aec = enable; if (!in->standby) select_devices(in->dev, in->usecase); } pthread_mutex_unlock(&in->dev->lock); pthread_mutex_unlock(&in->lock); return 0; } static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect) { ALOGV("%s: effect %p", __func__, effect); return add_remove_audio_effect(stream, effect, true); } static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect) { ALOGV("%s: effect %p", __func__, effect); return add_remove_audio_effect(stream, effect, false); } static int adev_open_output_stream(struct audio_hw_device *dev, audio_io_handle_t handle, audio_devices_t devices, audio_output_flags_t flags, struct audio_config *config, struct audio_stream_out **stream_out) { struct audio_device *adev = (struct audio_device *)dev; struct stream_out *out; int i, ret; ALOGV("%s: enter: sample_rate(%d) channel_mask(%#x) devices(%#x) flags(%#x)", __func__, config->sample_rate, config->channel_mask, devices, flags); *stream_out = NULL; out = (struct stream_out *)calloc(1, sizeof(struct stream_out)); if (!out) { return -ENOMEM; } pthread_mutex_init(&out->lock, (const pthread_mutexattr_t *) NULL); pthread_cond_init(&out->cond, (const pthread_condattr_t *) NULL); if (devices == AUDIO_DEVICE_NONE) devices = AUDIO_DEVICE_OUT_SPEAKER; out->flags = flags; out->devices = devices; out->dev = adev; out->format = config->format; out->sample_rate = config->sample_rate; out->channel_mask = AUDIO_CHANNEL_OUT_STEREO; out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO; out->handle = handle; /* Init use case and pcm_config */ if (out->flags == AUDIO_OUTPUT_FLAG_DIRECT && out->devices & AUDIO_DEVICE_OUT_AUX_DIGITAL) { pthread_mutex_lock(&adev->lock); ret = read_hdmi_channel_masks(out); pthread_mutex_unlock(&adev->lock); if (ret != 0) goto error_open; if (config->sample_rate == 0) config->sample_rate = DEFAULT_OUTPUT_SAMPLING_RATE; if (config->channel_mask == 0) config->channel_mask = AUDIO_CHANNEL_OUT_5POINT1; out->channel_mask = config->channel_mask; out->sample_rate = config->sample_rate; out->usecase = USECASE_AUDIO_PLAYBACK_MULTI_CH; out->config = pcm_config_hdmi_multi; out->config.rate = config->sample_rate; out->config.channels = popcount(out->channel_mask); out->config.period_size = HDMI_MULTI_PERIOD_BYTES / (out->config.channels * 2); #ifndef DEEP_BUFFER_PRIMARY } else if (out->flags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) { out->usecase = USECASE_AUDIO_PLAYBACK_DEEP_BUFFER; out->config = pcm_config_deep_buffer; out->sample_rate = out->config.rate; #endif } else if (out->flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) { if (config->offload_info.version != AUDIO_INFO_INITIALIZER.version || config->offload_info.size != AUDIO_INFO_INITIALIZER.size) { ALOGE("%s: Unsupported Offload information", __func__); ret = -EINVAL; goto error_open; } if (!is_supported_format(config->offload_info.format)) { ALOGE("%s: Unsupported audio format", __func__); ret = -EINVAL; goto error_open; } out->compr_config.codec = (struct snd_codec *) calloc(1, sizeof(struct snd_codec)); out->usecase = USECASE_AUDIO_PLAYBACK_OFFLOAD; if (config->offload_info.channel_mask) out->channel_mask = config->offload_info.channel_mask; else if (config->channel_mask) out->channel_mask = config->channel_mask; out->format = config->offload_info.format; out->sample_rate = config->offload_info.sample_rate; out->stream.set_callback = out_set_callback; out->stream.pause = out_pause; out->stream.resume = out_resume; out->stream.drain = out_drain; out->stream.flush = out_flush; out->compr_config.codec->id = get_snd_codec_id(config->offload_info.format); out->compr_config.fragment_size = get_offload_buffer_size(); out->compr_config.fragments = COMPRESS_OFFLOAD_NUM_FRAGMENTS; out->compr_config.codec->sample_rate = compress_get_alsa_rate(config->offload_info.sample_rate); out->compr_config.codec->bit_rate = config->offload_info.bit_rate; out->compr_config.codec->ch_in = popcount(config->channel_mask); out->compr_config.codec->ch_out = out->compr_config.codec->ch_in; if (flags & AUDIO_OUTPUT_FLAG_NON_BLOCKING) out->non_blocking = 1; out->send_new_metadata = 1; out->offload_state = OFFLOAD_STATE_IDLE; out->playback_started = 0; create_offload_callback_thread(out); ALOGV("%s: offloaded output offload_info version %04x bit rate %d", __func__, config->offload_info.version, config->offload_info.bit_rate); //Decide if we need to use gapless mode by default set_gapless_mode(adev); #ifdef DEEP_BUFFER_PRIMARY } else if (out->flags & AUDIO_OUTPUT_FLAG_FAST) { out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY; out->config = pcm_config_low_latency; out->sample_rate = out->config.rate; #endif } else { /* primary path is the default path selected if no other outputs are available/suitable */ out->usecase = USECASE_AUDIO_PLAYBACK_PRIMARY; #ifdef DEEP_BUFFER_PRIMARY out->config = pcm_config_deep_buffer; #else out->config = pcm_config_low_latency; #endif out->sample_rate = out->config.rate; } if ((out->usecase == USECASE_AUDIO_PLAYBACK_PRIMARY) || (flags & AUDIO_OUTPUT_FLAG_PRIMARY)) { /* Ensure the default output is not selected twice */ if(adev->primary_output == NULL) adev->primary_output = out; else { ALOGE("%s: Primary output is already opened", __func__); ret = -EEXIST; goto error_open; } } /* Check if this usecase is already existing */ pthread_mutex_lock(&adev->lock); if (get_usecase_from_list(adev, out->usecase) != NULL) { ALOGE("%s: Usecase (%d) is already present", __func__, out->usecase); pthread_mutex_unlock(&adev->lock); ret = -EEXIST; goto error_open; } pthread_mutex_unlock(&adev->lock); out->stream.common.get_sample_rate = out_get_sample_rate; out->stream.common.set_sample_rate = out_set_sample_rate; out->stream.common.get_buffer_size = out_get_buffer_size; out->stream.common.get_channels = out_get_channels; out->stream.common.get_format = out_get_format; out->stream.common.set_format = out_set_format; out->stream.common.standby = out_standby; out->stream.common.dump = out_dump; out->stream.common.set_parameters = out_set_parameters; out->stream.common.get_parameters = out_get_parameters; out->stream.common.add_audio_effect = out_add_audio_effect; out->stream.common.remove_audio_effect = out_remove_audio_effect; out->stream.get_latency = out_get_latency; out->stream.set_volume = out_set_volume; out->stream.write = out_write; out->stream.get_render_position = out_get_render_position; out->stream.get_next_write_timestamp = out_get_next_write_timestamp; out->stream.get_presentation_position = out_get_presentation_position; out->standby = 1; /* out->muted = false; by calloc() */ /* out->written = 0; by calloc() */ config->format = out->stream.common.get_format(&out->stream.common); config->channel_mask = out->stream.common.get_channels(&out->stream.common); config->sample_rate = out->stream.common.get_sample_rate(&out->stream.common); *stream_out = &out->stream; ALOGV("%s: exit", __func__); return 0; error_open: free(out); *stream_out = NULL; ALOGD("%s: exit: ret %d", __func__, ret); return ret; } static void adev_close_output_stream(struct audio_hw_device *dev, struct audio_stream_out *stream) { struct stream_out *out = (struct stream_out *)stream; struct audio_device *adev = out->dev; ALOGV("%s: enter", __func__); out_standby(&stream->common); if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) { destroy_offload_callback_thread(out); if (out->compr_config.codec != NULL) free(out->compr_config.codec); } pthread_cond_destroy(&out->cond); pthread_mutex_destroy(&out->lock); free(stream); ALOGV("%s: exit", __func__); } static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs) { struct audio_device *adev = (struct audio_device *)dev; struct str_parms *parms; char *str; char value[32]; int val; int ret = 0, err; ALOGV("%s: enter: %s", __func__, kvpairs); parms = str_parms_create_str(kvpairs); ret = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_TTY_MODE, value, sizeof(value)); if (ret >= 0) { int tty_mode; if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_OFF) == 0) tty_mode = TTY_MODE_OFF; else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_VCO) == 0) tty_mode = TTY_MODE_VCO; else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_HCO) == 0) tty_mode = TTY_MODE_HCO; else if (strcmp(value, AUDIO_PARAMETER_VALUE_TTY_FULL) == 0) tty_mode = TTY_MODE_FULL; else return -EINVAL; pthread_mutex_lock(&adev->lock); if (tty_mode != adev->tty_mode) { adev->tty_mode = tty_mode; adev->acdb_settings = (adev->acdb_settings & TTY_MODE_CLEAR) | tty_mode; if (adev->in_call) ret = select_devices(adev, USECASE_VOICE_CALL); } pthread_mutex_unlock(&adev->lock); } err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_BT_NREC, value, sizeof(value)); if (err >= 0) { /* When set to false, HAL should disable EC and NS * But it is currently not supported. */ if (strcmp(value, AUDIO_PARAMETER_VALUE_ON) == 0) adev->bluetooth_nrec = true; else adev->bluetooth_nrec = false; } err = str_parms_get_str(parms, "screen_state", value, sizeof(value)); if (err >= 0) { if (strcmp(value, AUDIO_PARAMETER_VALUE_ON) == 0) adev->screen_off = false; else adev->screen_off = true; } err = str_parms_get_int(parms, "rotation", &val); if (err >= 0) { bool reverse_speakers = false; switch(val) { // FIXME: note that the code below assumes that the speakers are in the correct placement // relative to the user when the device is rotated 90deg from its default rotation. This // assumption is device-specific, not platform-specific like this code. case 270: reverse_speakers = true; break; case 0: case 90: case 180: break; default: ALOGE("%s: unexpected rotation of %d", __func__, val); } pthread_mutex_lock(&adev->lock); if (adev->speaker_lr_swap != reverse_speakers) { adev->speaker_lr_swap = reverse_speakers; // only update the selected device if there is active pcm playback struct audio_usecase *usecase; struct listnode *node; list_for_each(node, &adev->usecase_list) { usecase = node_to_item(node, struct audio_usecase, list); if (usecase->type == PCM_PLAYBACK) { select_devices(adev, usecase->id); break; } } } pthread_mutex_unlock(&adev->lock); } audio_extn_set_parameters(adev, parms); done: str_parms_destroy(parms); ALOGV("%s: exit with code(%d)", __func__, ret); return ret; } static char* adev_get_parameters(const struct audio_hw_device *dev, const char *keys) { return audio_extn_get_parameters(dev, keys); } static int adev_init_check(const struct audio_hw_device *dev) { return 0; } /* always called with adev lock held */ static int set_voice_volume_l(struct audio_device *adev, float volume) { int vol, err = 0; if (adev->mode == AUDIO_MODE_IN_CALL) { if (volume < 0.0) { volume = 0.0; } else if (volume > 1.0) { volume = 1.0; } vol = lrint(volume * 100.0); // Voice volume levels from android are mapped to driver volume levels as follows. // 0 -> 5, 20 -> 4, 40 ->3, 60 -> 2, 80 -> 1, 100 -> 0 // So adjust the volume to get the correct volume index in driver vol = 100 - vol; err = platform_set_voice_volume(adev->platform, vol); } return err; } static int adev_set_voice_volume(struct audio_hw_device *dev, float volume) { int ret; struct audio_device *adev = (struct audio_device *)dev; pthread_mutex_lock(&adev->lock); /* cache volume */ adev->voice_volume = volume; ret = set_voice_volume_l(adev, adev->voice_volume); pthread_mutex_unlock(&adev->lock); return ret; } static int adev_set_master_volume(struct audio_hw_device *dev, float volume) { return -ENOSYS; } static int adev_get_master_volume(struct audio_hw_device *dev, float *volume) { return -ENOSYS; } static int adev_set_master_mute(struct audio_hw_device *dev, bool muted) { return -ENOSYS; } static int adev_get_master_mute(struct audio_hw_device *dev, bool *muted) { return -ENOSYS; } static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode) { struct audio_device *adev = (struct audio_device *)dev; pthread_mutex_lock(&adev->lock); if (adev->mode != mode) { adev->mode = mode; } pthread_mutex_unlock(&adev->lock); return 0; } static int adev_set_mic_mute(struct audio_hw_device *dev, bool state) { struct audio_device *adev = (struct audio_device *)dev; int err = 0; pthread_mutex_lock(&adev->lock); adev->mic_mute = state; err = platform_set_mic_mute(adev->platform, state); pthread_mutex_unlock(&adev->lock); return err; } static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state) { struct audio_device *adev = (struct audio_device *)dev; *state = adev->mic_mute; return 0; } static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev, const struct audio_config *config) { int channel_count = popcount(config->channel_mask); return get_input_buffer_size(config->sample_rate, config->format, channel_count); } static int adev_open_input_stream(struct audio_hw_device *dev, audio_io_handle_t handle, audio_devices_t devices, struct audio_config *config, struct audio_stream_in **stream_in) { struct audio_device *adev = (struct audio_device *)dev; struct stream_in *in; int ret = 0, buffer_size, frame_size; int channel_count = popcount(config->channel_mask); ALOGV("%s: enter", __func__); *stream_in = NULL; if (check_input_parameters(config->sample_rate, config->format, channel_count) != 0) return -EINVAL; in = (struct stream_in *)calloc(1, sizeof(struct stream_in)); in->stream.common.get_sample_rate = in_get_sample_rate; in->stream.common.set_sample_rate = in_set_sample_rate; in->stream.common.get_buffer_size = in_get_buffer_size; in->stream.common.get_channels = in_get_channels; in->stream.common.get_format = in_get_format; in->stream.common.set_format = in_set_format; in->stream.common.standby = in_standby; in->stream.common.dump = in_dump; in->stream.common.set_parameters = in_set_parameters; in->stream.common.get_parameters = in_get_parameters; in->stream.common.add_audio_effect = in_add_audio_effect; in->stream.common.remove_audio_effect = in_remove_audio_effect; in->stream.set_gain = in_set_gain; in->stream.read = in_read; in->stream.get_input_frames_lost = in_get_input_frames_lost; in->device = devices; in->source = AUDIO_SOURCE_DEFAULT; in->dev = adev; in->standby = 1; in->channel_mask = config->channel_mask; /* Update config params with the requested sample rate and channels */ in->usecase = USECASE_AUDIO_RECORD; in->config = pcm_config_audio_capture; in->config.channels = channel_count; in->config.rate = config->sample_rate; frame_size = audio_stream_frame_size((struct audio_stream *)in); buffer_size = get_input_buffer_size(config->sample_rate, config->format, channel_count); in->config.period_size = buffer_size / frame_size; *stream_in = &in->stream; ALOGV("%s: exit", __func__); return ret; err_open: free(in); *stream_in = NULL; return ret; } static void adev_close_input_stream(struct audio_hw_device *dev, struct audio_stream_in *stream) { ALOGV("%s", __func__); in_standby(&stream->common); free(stream); return; } static int adev_dump(const audio_hw_device_t *device, int fd) { return 0; } static int adev_close(hw_device_t *device) { struct audio_device *adev = (struct audio_device *)device; audio_route_free(adev->audio_route); free(adev->snd_dev_ref_cnt); platform_deinit(adev->platform); free(device); return 0; } static int adev_open(const hw_module_t *module, const char *name, hw_device_t **device) { struct audio_device *adev; int i, ret; ALOGD("%s: enter", __func__); if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) return -EINVAL; adev = calloc(1, sizeof(struct audio_device)); adev->device.common.tag = HARDWARE_DEVICE_TAG; adev->device.common.version = AUDIO_DEVICE_API_VERSION_2_0; adev->device.common.module = (struct hw_module_t *)module; adev->device.common.close = adev_close; adev->device.init_check = adev_init_check; adev->device.set_voice_volume = adev_set_voice_volume; adev->device.set_master_volume = adev_set_master_volume; adev->device.get_master_volume = adev_get_master_volume; adev->device.set_master_mute = adev_set_master_mute; adev->device.get_master_mute = adev_get_master_mute; adev->device.set_mode = adev_set_mode; adev->device.set_mic_mute = adev_set_mic_mute; adev->device.get_mic_mute = adev_get_mic_mute; adev->device.set_parameters = adev_set_parameters; adev->device.get_parameters = adev_get_parameters; adev->device.get_input_buffer_size = adev_get_input_buffer_size; adev->device.open_output_stream = adev_open_output_stream; adev->device.close_output_stream = adev_close_output_stream; adev->device.open_input_stream = adev_open_input_stream; adev->device.close_input_stream = adev_close_input_stream; adev->device.dump = adev_dump; /* Set the default route before the PCM stream is opened */ pthread_mutex_lock(&adev->lock); adev->mode = AUDIO_MODE_NORMAL; adev->active_input = NULL; adev->primary_output = NULL; adev->out_device = AUDIO_DEVICE_NONE; adev->voice_call_rx = NULL; adev->voice_call_tx = NULL; adev->voice_volume = 1.0f; adev->tty_mode = TTY_MODE_OFF; adev->bluetooth_nrec = true; adev->in_call = false; adev->acdb_settings = TTY_MODE_OFF; /* adev->cur_hdmi_channels = 0; by calloc() */ adev->snd_dev_ref_cnt = calloc(SND_DEVICE_MAX, sizeof(int)); list_init(&adev->usecase_list); pthread_mutex_unlock(&adev->lock); /* Loads platform specific libraries dynamically */ adev->platform = platform_init(adev); if (!adev->platform) { free(adev->snd_dev_ref_cnt); free(adev); ALOGE("%s: Failed to init platform data, aborting.", __func__); *device = NULL; return -EINVAL; } if (access(VISUALIZER_LIBRARY_PATH, R_OK) == 0) { adev->visualizer_lib = dlopen(VISUALIZER_LIBRARY_PATH, RTLD_NOW); if (adev->visualizer_lib == NULL) { ALOGE("%s: DLOPEN failed for %s", __func__, VISUALIZER_LIBRARY_PATH); } else { ALOGV("%s: DLOPEN successful for %s", __func__, VISUALIZER_LIBRARY_PATH); adev->visualizer_start_output = (int (*)(audio_io_handle_t, int))dlsym(adev->visualizer_lib, "visualizer_hal_start_output"); adev->visualizer_stop_output = (int (*)(audio_io_handle_t, int))dlsym(adev->visualizer_lib, "visualizer_hal_stop_output"); } } if (access(OFFLOAD_EFFECTS_BUNDLE_LIBRARY_PATH, R_OK) == 0) { adev->offload_effects_lib = dlopen(OFFLOAD_EFFECTS_BUNDLE_LIBRARY_PATH, RTLD_NOW); if (adev->offload_effects_lib == NULL) { ALOGE("%s: DLOPEN failed for %s", __func__, OFFLOAD_EFFECTS_BUNDLE_LIBRARY_PATH); } else { ALOGV("%s: DLOPEN successful for %s", __func__, OFFLOAD_EFFECTS_BUNDLE_LIBRARY_PATH); adev->offload_effects_start_output = (int (*)(audio_io_handle_t, int))dlsym(adev->offload_effects_lib, "offload_effects_bundle_hal_start_output"); adev->offload_effects_stop_output = (int (*)(audio_io_handle_t, int))dlsym(adev->offload_effects_lib, "offload_effects_bundle_hal_stop_output"); } } *device = &adev->device.common; ALOGV("%s: exit", __func__); return 0; } static int set_gapless_mode(struct audio_device *adev) { char value[PROPERTY_VALUE_MAX] = {0}; bool gapless_enabled = false; const char *mixer_ctl_name = "Compress Gapless Playback"; struct mixer_ctl *ctl; ALOGV("%s:", __func__); property_get("audio.offload.gapless.enabled", value, NULL); gapless_enabled = atoi(value) || !strncmp("true", value, 4); ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name); if (!ctl) { ALOGE("%s: Could not get ctl for mixer cmd - %s", __func__, mixer_ctl_name); return -EINVAL; } if (mixer_ctl_set_value(ctl, 0, gapless_enabled) < 0) { ALOGE("%s: Could not set gapless mode %d", __func__, gapless_enabled); return -EINVAL; } return 0; } /* Read offload buffer size from a property. * If value is not power of 2 round it to * power of 2. */ static uint32_t get_offload_buffer_size() { char value[PROPERTY_VALUE_MAX] = {0}; uint32_t fragment_size = COMPRESS_OFFLOAD_FRAGMENT_SIZE; if((property_get("audio.offload.buffer.size.kb", value, "")) && atoi(value)) { fragment_size = atoi(value) * 1024; //ring buffer size needs to be 4k aligned. CHECK(!(fragment_size * COMPRESS_OFFLOAD_NUM_FRAGMENTS % 4096)); } if(fragment_size < MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE) fragment_size = MIN_COMPRESS_OFFLOAD_FRAGMENT_SIZE; else if(fragment_size > MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE) fragment_size = MAX_COMPRESS_OFFLOAD_FRAGMENT_SIZE; ALOGVV("%s: fragment_size %d", __func__, fragment_size); return fragment_size; } static struct hw_module_methods_t hal_module_methods = { .open = adev_open, }; struct audio_module HAL_MODULE_INFO_SYM = { .common = { .tag = HARDWARE_MODULE_TAG, .module_api_version = AUDIO_MODULE_API_VERSION_0_1, .hal_api_version = HARDWARE_HAL_API_VERSION, .id = AUDIO_HARDWARE_MODULE_ID, .name = "QCOM Audio HAL", .author = "Code Aurora Forum", .methods = &hal_module_methods, }, };