audio: low latency playback optimizations (b7804685) · Commits · e / os / android_hardware_qcom_audio

hal/audio_hw.c

+253 −34

Original line number	Original line	Diff line number	Diff line
	@@ -15,6 +15,7 @@
	*/		*/

	#define LOG_TAG "audio_hw_primary"		#define LOG_TAG "audio_hw_primary"
			#define ATRACE_TAG ATRACE_TAG_AUDIO
	/#define LOG_NDEBUG 0/		/#define LOG_NDEBUG 0/
	/#define VERY_VERY_VERBOSE_LOGGING/		/#define VERY_VERY_VERBOSE_LOGGING/
	#ifdef VERY_VERY_VERBOSE_LOGGING		#ifdef VERY_VERY_VERBOSE_LOGGING
	@@ -34,6 +35,7 @@
	#include <sys/prctl.h>		#include <sys/prctl.h>

	#include <cutils/log.h>		#include <cutils/log.h>
			#include <cutils/trace.h>
	#include <cutils/str_parms.h>		#include <cutils/str_parms.h>
	#include <cutils/properties.h>		#include <cutils/properties.h>
	#include <cutils/atomic.h>		#include <cutils/atomic.h>
	@@ -73,6 +75,8 @@
	#define STR(x) #x		#define STR(x) #x
	#endif		#endif

			#define ULL_PERIOD_SIZE (DEFAULT_OUTPUT_SAMPLING_RATE/1000)

	static unsigned int configured_low_latency_capture_period_size =		static unsigned int configured_low_latency_capture_period_size =
	LOW_LATENCY_CAPTURE_PERIOD_SIZE;		LOW_LATENCY_CAPTURE_PERIOD_SIZE;

	@@ -103,6 +107,20 @@ struct pcm_config pcm_config_low_latency = {
	.avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,		.avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4,
	};		};

			static int af_period_multiplier = 4;
			struct pcm_config pcm_config_rt = {
			.channels = DEFAULT_CHANNEL_COUNT,
			.rate = DEFAULT_OUTPUT_SAMPLING_RATE,
			.period_size = ULL_PERIOD_SIZE, //1 ms
			.period_count = 512, //=> buffer size is 512ms
			.format = PCM_FORMAT_S16_LE,
			.start_threshold = ULL_PERIOD_SIZE*8, //8ms
			.stop_threshold = INT_MAX,
			.silence_threshold = 0,
			.silence_size = 0,
			.avail_min = ULL_PERIOD_SIZE, //1 ms
			};

	struct pcm_config pcm_config_hdmi_multi = {		struct pcm_config pcm_config_hdmi_multi = {
	.channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */		.channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */
	.rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */		.rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */
	@@ -122,6 +140,19 @@ struct pcm_config pcm_config_audio_capture = {
	.avail_min = 0,		.avail_min = 0,
	};		};

			struct pcm_config pcm_config_audio_capture_rt = {
			.channels = DEFAULT_CHANNEL_COUNT,
			.rate = DEFAULT_OUTPUT_SAMPLING_RATE,
			.period_size = ULL_PERIOD_SIZE,
			.period_count = 512,
			.format = PCM_FORMAT_S16_LE,
			.start_threshold = 0,
			.stop_threshold = INT_MAX,
			.silence_threshold = 0,
			.silence_size = 0,
			.avail_min = ULL_PERIOD_SIZE, //1 ms
			};

	#define AFE_PROXY_CHANNEL_COUNT 2		#define AFE_PROXY_CHANNEL_COUNT 2
	#define AFE_PROXY_SAMPLING_RATE 48000		#define AFE_PROXY_SAMPLING_RATE 48000

	@@ -201,6 +232,120 @@ static struct audio_device *adev = NULL;
	static pthread_mutex_t adev_init_lock;		static pthread_mutex_t adev_init_lock;
	static unsigned int audio_device_ref_count;		static unsigned int audio_device_ref_count;

			static bool may_use_noirq_mode(struct audio_device *adev, audio_usecase_t uc_id,
			int flags __unused)
			{
			int dir = 0;
			switch (uc_id) {
			case USECASE_AUDIO_RECORD_LOW_LATENCY:
			dir = 1;
			case USECASE_AUDIO_PLAYBACK_ULL:
			break;
			default:
			return false;
			}

			int dev_id = platform_get_pcm_device_id(uc_id, dir == 0 ?
			PCM_PLAYBACK : PCM_CAPTURE);
			if (adev->adm_is_noirq_avail)
			return adev->adm_is_noirq_avail(adev->adm_data,
			adev->snd_card, dev_id, dir);
			return false;
			}

			static void register_out_stream(struct stream_out *out)
			{
			struct audio_device *adev = out->dev;
			if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
			return;

			if (!adev->adm_register_output_stream)
			return;

			adev->adm_register_output_stream(adev->adm_data,
			out->handle,
			out->flags);

			if (!adev->adm_set_config)
			return;

			if (out->realtime) {
			adev->adm_set_config(adev->adm_data,
			out->handle,
			out->pcm, &out->config);
			}
			}

			static void register_in_stream(struct stream_in *in)
			{
			struct audio_device *adev = in->dev;
			if (!adev->adm_register_input_stream)
			return;

			adev->adm_register_input_stream(adev->adm_data,
			in->capture_handle,
			in->flags);

			if (!adev->adm_set_config)
			return;

			if (in->realtime) {
			adev->adm_set_config(adev->adm_data,
			in->capture_handle,
			in->pcm,
			&in->config);
			}
			}

			static void request_out_focus(struct stream_out *out, long ns)
			{
			struct audio_device *adev = out->dev;

			if (out->routing_change) {
			out->routing_change = false;
			if (adev->adm_on_routing_change)
			adev->adm_on_routing_change(adev->adm_data, out->handle);
			}

			if (adev->adm_request_focus_v2) {
			adev->adm_request_focus_v2(adev->adm_data, out->handle, ns);
			} else if (adev->adm_request_focus) {
			adev->adm_request_focus(adev->adm_data, out->handle);
			}
			}

			static void request_in_focus(struct stream_in *in, long ns)
			{
			struct audio_device *adev = in->dev;

			if (in->routing_change) {
			in->routing_change = false;
			if (adev->adm_on_routing_change)
			adev->adm_on_routing_change(adev->adm_data, in->capture_handle);
			}

			if (adev->adm_request_focus_v2) {
			adev->adm_request_focus_v2(adev->adm_data, in->capture_handle, ns);
			} else if (adev->adm_request_focus) {
			adev->adm_request_focus(adev->adm_data, in->capture_handle);
			}
			}

			static void release_out_focus(struct stream_out *out, long ns __unused)
			{
			struct audio_device *adev = out->dev;

			if (adev->adm_abandon_focus)
			adev->adm_abandon_focus(adev->adm_data, out->handle);
			}

			static void release_in_focus(struct stream_in *in, long ns __unused)
			{
			struct audio_device *adev = in->dev;
			if (adev->adm_abandon_focus)
			adev->adm_abandon_focus(adev->adm_data, in->capture_handle);
			}

	__attribute__ ((visibility ("default")))		__attribute__ ((visibility ("default")))
	bool audio_hw_send_gain_dep_calibration(int level) {		bool audio_hw_send_gain_dep_calibration(int level) {
	bool ret_val = false;		bool ret_val = false;
	@@ -236,6 +381,12 @@ static bool is_supported_format(audio_format_t format)
	return false;		return false;
	}		}

			static inline bool is_mmap_usecase(audio_usecase_t uc_id)
			{
			return (uc_id == USECASE_AUDIO_RECORD_AFE_PROXY) \|\|
			(uc_id == USECASE_AUDIO_PLAYBACK_AFE_PROXY);
			}

	static int get_snd_codec_id(audio_format_t format)		static int get_snd_codec_id(audio_format_t format)
	{		{
	int id = 0;		int id = 0;
	@@ -862,6 +1013,8 @@ int start_input_stream(struct stream_in *in)
	if (in->usecase == USECASE_AUDIO_RECORD_AFE_PROXY) {		if (in->usecase == USECASE_AUDIO_RECORD_AFE_PROXY) {
	flags \|= PCM_MMAP \| PCM_NOIRQ;		flags \|= PCM_MMAP \| PCM_NOIRQ;
	pcm_open_retry_count = PROXY_OPEN_RETRY_COUNT;		pcm_open_retry_count = PROXY_OPEN_RETRY_COUNT;
			} else if (in->realtime) {
			flags \|= PCM_MMAP \| PCM_NOIRQ;
	}		}

	while (1) {		while (1) {
	@@ -891,7 +1044,10 @@ int start_input_stream(struct stream_in *in)
	in->pcm = NULL;		in->pcm = NULL;
	goto error_open;		goto error_open;
	}		}
			register_in_stream(in);
			if (in->realtime) {
			ret = pcm_start(in->pcm);
			}
	audio_extn_perf_lock_release();		audio_extn_perf_lock_release();

	ALOGV("%s: exit", __func__);		ALOGV("%s: exit", __func__);
	@@ -1225,9 +1381,12 @@ int start_output_stream(struct stream_out *out)
	if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {		if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD) {
	unsigned int flags = PCM_OUT;		unsigned int flags = PCM_OUT;
	unsigned int pcm_open_retry_count = 0;		unsigned int pcm_open_retry_count = 0;

	if (out->usecase == USECASE_AUDIO_PLAYBACK_AFE_PROXY) {		if (out->usecase == USECASE_AUDIO_PLAYBACK_AFE_PROXY) {
	flags \|= PCM_MMAP \| PCM_NOIRQ;		flags \|= PCM_MMAP \| PCM_NOIRQ;
	pcm_open_retry_count = PROXY_OPEN_RETRY_COUNT;		pcm_open_retry_count = PROXY_OPEN_RETRY_COUNT;
			} else if (out->realtime) {
			flags \|= PCM_MMAP \| PCM_NOIRQ;
	} else		} else
	flags \|= PCM_MONOTONIC;		flags \|= PCM_MONOTONIC;

	@@ -1278,9 +1437,14 @@ int start_output_stream(struct stream_out *out)
	if (adev->offload_effects_start_output != NULL)		if (adev->offload_effects_start_output != NULL)
	adev->offload_effects_start_output(out->handle, out->pcm_device_id);		adev->offload_effects_start_output(out->handle, out->pcm_device_id);
	}		}
			ret = 0;
			register_out_stream(out);
			if (out->realtime) {
			ret = pcm_start(out->pcm);
			}
	audio_extn_perf_lock_release();		audio_extn_perf_lock_release();
	ALOGV("%s: exit", __func__);		ALOGV("%s: exit", __func__);
	return 0;		return ret;
	error_open:		error_open:
	audio_extn_perf_lock_release();		audio_extn_perf_lock_release();
	stop_output_stream(out);		stop_output_stream(out);
	@@ -1369,7 +1533,7 @@ static size_t out_get_buffer_size(const struct audio_stream *stream)
	if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {		if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
	return out->compr_config.fragment_size;		return out->compr_config.fragment_size;
	}		}
	return out->config.period_size *		return out->config.period_size * out->af_period_multiplier *
	audio_stream_out_frame_size((const struct audio_stream_out *)stream);		audio_stream_out_frame_size((const struct audio_stream_out *)stream);
	}		}

	@@ -1522,11 +1686,18 @@ static int out_set_parameters(struct audio_stream stream, const char kvpairs)
	* Because select_devices() must be called to switch back the music		* Because select_devices() must be called to switch back the music
	* playback to headset.		* playback to headset.
	*/		*/
	if (val != 0) {		audio_devices_t new_dev = val;
	out->devices = val;		if (new_dev != AUDIO_DEVICE_NONE) {
			bool same_dev = out->devices == new_dev;
			out->devices = new_dev;

	if (!out->standby)		if (!out->standby) {
			if (!same_dev) {
			ALOGV("update routing change");
			out->routing_change = true;
			}
	select_devices(adev, out->usecase);		select_devices(adev, out->usecase);
			}

	if (output_drives_call(adev, out)) {		if (output_drives_call(adev, out)) {
	if (!voice_is_in_call(adev)) {		if (!voice_is_in_call(adev)) {
	@@ -1598,10 +1769,19 @@ static char* out_get_parameters(const struct audio_stream stream, const char k

	static uint32_t out_get_latency(const struct audio_stream_out *stream)		static uint32_t out_get_latency(const struct audio_stream_out *stream)
	{		{
			uint32_t hw_delay, period_ms;
	struct stream_out out = (struct stream_out )stream;		struct stream_out out = (struct stream_out )stream;

	if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)		if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD)
	return COMPRESS_OFFLOAD_PLAYBACK_LATENCY;		return COMPRESS_OFFLOAD_PLAYBACK_LATENCY;
			else if (out->realtime) {
			// since the buffer won't be filled up faster than realtime,
			// return a smaller number
			period_ms = (out->af_period_multiplier * out->config.period_size *
			1000) / (out->config.rate);
			hw_delay = platform_render_latency(out->usecase)/1000;
			return period_ms + hw_delay;
			}

	return (out->config.period_count * out->config.period_size * 1000) /		return (out->config.period_count * out->config.period_size * 1000) /
	(out->config.rate);		(out->config.rate);
	@@ -1679,8 +1859,6 @@ static ssize_t out_write(struct audio_stream_out stream, const void buffer,
	out->standby = true;		out->standby = true;
	goto exit;		goto exit;
	}		}
	if (out->usecase != USECASE_AUDIO_PLAYBACK_OFFLOAD && adev->adm_register_output_stream)
	adev->adm_register_output_stream(adev->adm_data, out->handle, out->flags);
	}		}

	if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {		if (out->usecase == USECASE_AUDIO_PLAYBACK_OFFLOAD) {
	@@ -1724,20 +1902,21 @@ static ssize_t out_write(struct audio_stream_out stream, const void buffer,
	memset((void *)buffer, 0, bytes);		memset((void *)buffer, 0, bytes);

	ALOGVV("%s: writing buffer (%d bytes) to pcm device", __func__, bytes);		ALOGVV("%s: writing buffer (%d bytes) to pcm device", __func__, bytes);
	if (adev->adm_request_focus)
	adev->adm_request_focus(adev->adm_data, out->handle);

	if (out->usecase == USECASE_AUDIO_PLAYBACK_AFE_PROXY) {		long ns = pcm_bytes_to_frames(out->pcm, bytes)*1000000000LL/
			out->config.rate;
			request_out_focus(out, ns);

			bool use_mmap = is_mmap_usecase(out->usecase) \|\| out->realtime;
			if (use_mmap)
	ret = pcm_mmap_write(out->pcm, (void *)buffer, bytes);		ret = pcm_mmap_write(out->pcm, (void *)buffer, bytes);
	}
	else		else
	ret = pcm_write(out->pcm, (void *)buffer, bytes);		ret = pcm_write(out->pcm, (void *)buffer, bytes);

	if (ret == 0)		if (ret == 0)
	out->written += bytes / (out->config.channels * sizeof(short));		out->written += bytes / (out->config.channels * sizeof(short));

	if (adev->adm_abandon_focus)		release_out_focus(out, ns);
	adev->adm_abandon_focus(adev->adm_data, out->handle);
	}		}
	}		}

	@@ -1931,7 +2110,7 @@ static size_t in_get_buffer_size(const struct audio_stream *stream)
	{		{
	struct stream_in in = (struct stream_in )stream;		struct stream_in in = (struct stream_in )stream;

	return in->config.period_size *		return in->config.period_size * in->af_period_multiplier *
	audio_stream_in_frame_size((const struct audio_stream_in *)stream);		audio_stream_in_frame_size((const struct audio_stream_in *)stream);
	}		}

	@@ -2025,8 +2204,11 @@ static int in_set_parameters(struct audio_stream stream, const char kvpairs)
	if (((int)in->device != val) && (val != 0)) {		if (((int)in->device != val) && (val != 0)) {
	in->device = val;		in->device = val;
	/* If recording is in progress, change the tx device to new device */		/* If recording is in progress, change the tx device to new device */
	if (!in->standby)		if (!in->standby) {
	status = select_devices(adev, in->usecase);		ALOGV("update input routing change");
			in->routing_change = true;
			ret = select_devices(adev, in->usecase);
			}
	}		}
	}		}

	@@ -2074,22 +2256,27 @@ static ssize_t in_read(struct audio_stream_in stream, void buffer,
	goto exit;		goto exit;
	}		}
	in->standby = 0;		in->standby = 0;
	if (adev->adm_register_input_stream)
	adev->adm_register_input_stream(adev->adm_data, in->capture_handle, in->flags);
	}		}

	if (adev->adm_request_focus)		//what's the duration requested by the client?
	adev->adm_request_focus(adev->adm_data, in->capture_handle);		long ns = pcm_bytes_to_frames(in->pcm, bytes)*1000000000LL/
			in->config.rate;
			request_in_focus(in, ns);

			bool use_mmap = is_mmap_usecase(in->usecase) \|\| in->realtime;
	if (in->pcm) {		if (in->pcm) {
	if (in->usecase == USECASE_AUDIO_RECORD_AFE_PROXY) {		if (use_mmap) {
	ret = pcm_mmap_read(in->pcm, buffer, bytes);		ret = pcm_mmap_read(in->pcm, buffer, bytes);
	} else		} else
	ret = pcm_read(in->pcm, buffer, bytes);		ret = pcm_read(in->pcm, buffer, bytes);

			if (ret < 0) {
			ALOGE("Failed to read w/err %s", strerror(errno));
			ret = -errno;
			}
	}		}

	if (adev->adm_abandon_focus)		release_in_focus(in, ns);
	adev->adm_abandon_focus(adev->adm_data, in->capture_handle);

	/*		/*
	* Instead of writing zeroes here, we could trust the hardware		* Instead of writing zeroes here, we could trust the hardware
	@@ -2342,7 +2529,9 @@ static int adev_open_output_stream(struct audio_hw_device *dev,
	out->config = pcm_config_deep_buffer;		out->config = pcm_config_deep_buffer;
	} else if (out->flags & AUDIO_OUTPUT_FLAG_RAW) {		} else if (out->flags & AUDIO_OUTPUT_FLAG_RAW) {
	out->usecase = USECASE_AUDIO_PLAYBACK_ULL;		out->usecase = USECASE_AUDIO_PLAYBACK_ULL;
	out->config = pcm_config_low_latency;		out->realtime = may_use_noirq_mode(adev, USECASE_AUDIO_PLAYBACK_ULL, out->flags);
			out->usecase = USECASE_AUDIO_PLAYBACK_ULL;
			out->config = out->realtime ? pcm_config_rt : pcm_config_low_latency;
	} else {		} else {
	out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY;		out->usecase = USECASE_AUDIO_PLAYBACK_LOW_LATENCY;
	out->config = pcm_config_low_latency;		out->config = pcm_config_low_latency;
	@@ -2410,6 +2599,7 @@ static int adev_open_output_stream(struct audio_hw_device *dev,
	out->stream.get_next_write_timestamp = out_get_next_write_timestamp;		out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
	out->stream.get_presentation_position = out_get_presentation_position;		out->stream.get_presentation_position = out_get_presentation_position;

			out->af_period_multiplier = out->realtime ? af_period_multiplier : 1;
	out->standby = 1;		out->standby = 1;
	/* out->muted = false; by calloc() */		/* out->muted = false; by calloc() */
	/* out->written = 0; by calloc() */		/* out->written = 0; by calloc() */
	@@ -2719,18 +2909,28 @@ static int adev_open_input_stream(struct audio_hw_device *dev,
	#if LOW_LATENCY_CAPTURE_USE_CASE		#if LOW_LATENCY_CAPTURE_USE_CASE
	in->usecase = USECASE_AUDIO_RECORD_LOW_LATENCY;		in->usecase = USECASE_AUDIO_RECORD_LOW_LATENCY;
	#endif		#endif
			in->realtime = may_use_noirq_mode(adev, in->usecase, in->flags);
			in->config = in->realtime ? pcm_config_audio_capture_rt :
			pcm_config_audio_capture;
	}		}
	in->config = pcm_config_audio_capture;

			if (!in->realtime) {
	frame_size = audio_stream_in_frame_size(&in->stream);		frame_size = audio_stream_in_frame_size(&in->stream);
	buffer_size = get_input_buffer_size(config->sample_rate,		buffer_size = get_input_buffer_size(config->sample_rate,
	config->format,		config->format,
	channel_count,		channel_count,
	is_low_latency);		is_low_latency);
	in->config.period_size = buffer_size / frame_size;		in->config.period_size = buffer_size / frame_size;
			} // period size is left untouched for rt mode playback
	}		}

	in->config.channels = channel_count;		in->config.channels = channel_count;
			if (in->realtime) {
			in->af_period_multiplier = af_period_multiplier;
			} else {
	in->config.rate = config->sample_rate;		in->config.rate = config->sample_rate;
			in->af_period_multiplier = 1;
			}

	/* This stream could be for sound trigger lab,		/* This stream could be for sound trigger lab,
	get sound trigger pcm if present */		get sound trigger pcm if present */
	@@ -3062,6 +3262,14 @@ static int adev_open(const hw_module_t module, const char name,
	dlsym(adev->adm_lib, "adm_request_focus");		dlsym(adev->adm_lib, "adm_request_focus");
	adev->adm_abandon_focus = (adm_abandon_focus_t)		adev->adm_abandon_focus = (adm_abandon_focus_t)
	dlsym(adev->adm_lib, "adm_abandon_focus");		dlsym(adev->adm_lib, "adm_abandon_focus");
			adev->adm_set_config = (adm_set_config_t)
			dlsym(adev->adm_lib, "adm_set_config");
			adev->adm_request_focus_v2 = (adm_request_focus_v2_t)
			dlsym(adev->adm_lib, "adm_request_focus_v2");
			adev->adm_is_noirq_avail = (adm_is_noirq_avail_t)
			dlsym(adev->adm_lib, "adm_is_noirq_avail");
			adev->adm_on_routing_change = (adm_on_routing_change_t)
			dlsym(adev->adm_lib, "adm_on_routing_change");
	}		}

	adev->bt_wb_speech_enabled = false;		adev->bt_wb_speech_enabled = false;
	@@ -3091,6 +3299,17 @@ static int adev_open(const hw_module_t module, const char name,
	}		}

	audio_device_ref_count++;		audio_device_ref_count++;

			if (property_get("audio_hal.period_multiplier", value, NULL) > 0) {
			af_period_multiplier = atoi(value);
			if (af_period_multiplier < 0) {
			af_period_multiplier = 2;
			} else if (af_period_multiplier > 4) {
			af_period_multiplier = 4;
			}
			ALOGV("new period_multiplier = %d", af_period_multiplier);
			}

	pthread_mutex_unlock(&adev_init_lock);		pthread_mutex_unlock(&adev_init_lock);

	if (adev->adm_init)		if (adev->adm_init)

hal/audio_hw.h

+16 −3

Original line number	Original line	Diff line number	Diff line
	@@ -177,7 +177,9 @@ struct stream_out {
	void *offload_cookie;		void *offload_cookie;
	struct compr_gapless_mdata gapless_mdata;		struct compr_gapless_mdata gapless_mdata;
	int send_new_metadata;		int send_new_metadata;
			bool realtime;
			int af_period_multiplier;
			bool routing_change;
	struct audio_device *dev;		struct audio_device *dev;
	};		};

	@@ -201,7 +203,9 @@ struct stream_in {
	audio_input_flags_t flags;		audio_input_flags_t flags;
	bool is_st_session;		bool is_st_session;
	bool is_st_session_active;		bool is_st_session_active;
			bool realtime;
			int af_period_multiplier;
			bool routing_change;
	struct audio_device *dev;		struct audio_device *dev;
	};		};

	@@ -234,6 +238,12 @@ typedef void (adm_register_input_stream_t)(void , audio_io_handle_t, audio_inp
	typedef void (adm_deregister_stream_t)(void , audio_io_handle_t);		typedef void (adm_deregister_stream_t)(void , audio_io_handle_t);
	typedef void (adm_request_focus_t)(void , audio_io_handle_t);		typedef void (adm_request_focus_t)(void , audio_io_handle_t);
	typedef void (adm_abandon_focus_t)(void , audio_io_handle_t);		typedef void (adm_abandon_focus_t)(void , audio_io_handle_t);
			typedef void (adm_set_config_t)(void , audio_io_handle_t,
			struct pcm *,
			struct pcm_config *);
			typedef void (adm_request_focus_v2_t)(void , audio_io_handle_t, long);
			typedef bool (adm_is_noirq_avail_t)(void , int, int, int);
			typedef void (adm_on_routing_change_t)(void , audio_io_handle_t);

	struct audio_device {		struct audio_device {
	struct audio_hw_device device;		struct audio_hw_device device;
	@@ -285,10 +295,13 @@ struct audio_device {
	adm_deregister_stream_t adm_deregister_stream;		adm_deregister_stream_t adm_deregister_stream;
	adm_request_focus_t adm_request_focus;		adm_request_focus_t adm_request_focus;
	adm_abandon_focus_t adm_abandon_focus;		adm_abandon_focus_t adm_abandon_focus;
			adm_set_config_t adm_set_config;
			adm_request_focus_v2_t adm_request_focus_v2;
			adm_is_noirq_avail_t adm_is_noirq_avail;
			adm_on_routing_change_t adm_on_routing_change;

	/* logging */		/* logging */
	snd_device_t last_logged_snd_device[AUDIO_USECASE_MAX][2]; /* [out, in] */		snd_device_t last_logged_snd_device[AUDIO_USECASE_MAX][2]; /* [out, in] */

	};		};

	int select_devices(struct audio_device *adev,		int select_devices(struct audio_device *adev,

hal/msm8974/platform.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -491,6 +491,7 @@ static const struct name_to_index usecase_name_index[AUDIO_USECASE_MAX] = {

	#define DEEP_BUFFER_PLATFORM_DELAY (29*1000LL)		#define DEEP_BUFFER_PLATFORM_DELAY (29*1000LL)
	#define LOW_LATENCY_PLATFORM_DELAY (13*1000LL)		#define LOW_LATENCY_PLATFORM_DELAY (13*1000LL)
			#define ULL_PLATFORM_DELAY (7*1000LL)

	static pthread_once_t check_op_once_ctl = PTHREAD_ONCE_INIT;		static pthread_once_t check_op_once_ctl = PTHREAD_ONCE_INIT;
	static bool is_tmus = false;		static bool is_tmus = false;
	@@ -2524,6 +2525,8 @@ int64_t platform_render_latency(audio_usecase_t usecase)
	return DEEP_BUFFER_PLATFORM_DELAY;		return DEEP_BUFFER_PLATFORM_DELAY;
	case USECASE_AUDIO_PLAYBACK_LOW_LATENCY:		case USECASE_AUDIO_PLAYBACK_LOW_LATENCY:
	return LOW_LATENCY_PLATFORM_DELAY;		return LOW_LATENCY_PLATFORM_DELAY;
			case USECASE_AUDIO_PLAYBACK_ULL:
			return ULL_PLATFORM_DELAY;
	default:		default:
	return 0;		return 0;
	}		}