Snap for 5622519 from 14f1d88d0eeb04f65a54a0c835feb4d719892bb8 to pi-platform-release (0c26ce89) · Commits · e / os / android_hardware_qcom_audio

hal/audio_hw.c

+32 −2

Original line number	Diff line number	Diff line
		@@ -3360,6 +3360,17 @@ static void adjust_mmap_period_count(struct pcm_config *config, int32_t min_size
		ALOGV("%s requested config.period_count = %d", __func__, config->period_count);
		}

		// Read offset for the positional timestamp from a persistent vendor property.
		// This is to workaround apparent inaccuracies in the timing information that
		// is used by the AAudio timing model. The inaccuracies can cause glitches.
		static int64_t get_mmap_out_time_offset() {
		const int32_t kDefaultOffsetMicros = 0;
		int32_t mmap_time_offset_micros = property_get_int32(
		"persist.audio.out_mmap_delay_micros", kDefaultOffsetMicros);
		ALOGI("mmap_time_offset_micros = %d for output", mmap_time_offset_micros);
		return mmap_time_offset_micros * (int64_t)1000;
		}

		static int out_create_mmap_buffer(const struct audio_stream_out *stream,
		int32_t min_size_frames,
		struct audio_mmap_buffer_info *info)
		@@ -3437,6 +3448,8 @@ static int out_create_mmap_buffer(const struct audio_stream_out *stream,
		goto exit;
		}

		out->mmap_time_offset_nanos = get_mmap_out_time_offset();

		out->standby = false;
		ret = 0;

		@@ -3480,7 +3493,9 @@ static int out_get_mmap_position(const struct audio_stream_out *stream,
		ALOGE("%s: %s", __func__, pcm_get_error(out->pcm));
		goto exit;
		}
		position->time_nanoseconds = audio_utils_ns_from_timespec(&ts);
		position->time_nanoseconds = audio_utils_ns_from_timespec(&ts)
		+ out->mmap_time_offset_nanos;

		exit:
		pthread_mutex_unlock(&out->lock);
		return ret;
		@@ -3994,6 +4009,17 @@ static int in_start(const struct audio_stream_in* stream)
		return ret;
		}

		// Read offset for the positional timestamp from a persistent vendor property.
		// This is to workaround apparent inaccuracies in the timing information that
		// is used by the AAudio timing model. The inaccuracies can cause glitches.
		static int64_t in_get_mmap_time_offset() {
		const int32_t kDefaultOffsetMicros = 0;
		int32_t mmap_time_offset_micros = property_get_int32(
		"persist.audio.in_mmap_delay_micros", kDefaultOffsetMicros);
		ALOGI("mmap_time_offset_micros = %d for input", mmap_time_offset_micros);
		return mmap_time_offset_micros * (int64_t)1000;
		}

		static int in_create_mmap_buffer(const struct audio_stream_in *stream,
		int32_t min_size_frames,
		struct audio_mmap_buffer_info *info)
		@@ -4074,6 +4100,8 @@ static int in_create_mmap_buffer(const struct audio_stream_in *stream,
		goto exit;
		}

		in->mmap_time_offset_nanos = in_get_mmap_time_offset();

		in->standby = false;
		ret = 0;

		@@ -4116,7 +4144,9 @@ static int in_get_mmap_position(const struct audio_stream_in *stream,
		ALOGE("%s: %s", __func__, pcm_get_error(in->pcm));
		goto exit;
		}
		position->time_nanoseconds = audio_utils_ns_from_timespec(&ts);
		position->time_nanoseconds = audio_utils_ns_from_timespec(&ts)
		+ in->mmap_time_offset_nanos;

		exit:
		pthread_mutex_unlock(&in->lock);
		return ret;

hal/audio_hw.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,7 @@ struct stream_out {
		uint32_t supported_sample_rates[MAX_SUPPORTED_SAMPLE_RATES + 1];
		bool muted;
		uint64_t written; /* total frames written, not cleared when entering standby */
		int64_t mmap_time_offset_nanos; /* fudge factor to correct inaccuracies in DSP */
		audio_io_handle_t handle;

		int non_blocking;
		@@ -274,6 +275,7 @@ struct stream_in {
		bool enable_ns;
		int64_t frames_read; /* total frames read, not cleared when entering standby */
		int64_t frames_muted; /* total frames muted, not cleared when entering standby */
		int64_t mmap_time_offset_nanos; /* fudge factor to correct inaccuracies in DSP */

		audio_io_handle_t capture_handle;
		audio_input_flags_t flags;