Merge "hal: Add volume control for pcm playback" (ae79077d) · Commits · e / devices / FP5 / android_hardware_qcom_audio

hal/audio_hw.c

+50 −0

Original line number	Diff line number	Diff line
		@@ -90,6 +90,7 @@
		#define DIRECT_PCM_NUM_FRAGMENTS 2
		#define COMPRESS_PLAYBACK_VOLUME_MAX 0x2000
		#define VOIP_PLAYBACK_VOLUME_MAX 0x2000
		#define PCM_PLAYBACK_VOLUME_MAX 0x2000
		#define DSD_VOLUME_MIN_DB (-110)

		#define PROXY_OPEN_RETRY_COUNT 100
		@@ -444,6 +445,7 @@ static int last_known_cal_step = -1 ;
		static int check_a2dp_restore_l(struct audio_device adev, struct stream_out out, bool restore);
		static int out_set_compr_volume(struct audio_stream_out *stream, float left, float right);
		static int out_set_voip_volume(struct audio_stream_out *stream, float left, float right);
		static int out_set_pcm_volume(struct audio_stream_out *stream, float left, float right);

		static bool may_use_noirq_mode(struct audio_device *adev, audio_usecase_t uc_id,
		int flags __unused)
		@@ -3140,6 +3142,11 @@ int start_output_stream(struct stream_out *out)
		// apply volume for voip playback after path is set up
		if (out->usecase == USECASE_AUDIO_PLAYBACK_VOIP)
		out_set_voip_volume(&out->stream, out->volume_l, out->volume_r);
		else if ((out->usecase == USECASE_AUDIO_PLAYBACK_LOW_LATENCY \|\| out->usecase == USECASE_AUDIO_PLAYBACK_DEEP_BUFFER) &&
		(out->apply_volume)) {
		out_set_pcm_volume(&out->stream, out->volume_l, out->volume_r);
		out->apply_volume = false;
		}
		} else {
		platform_set_stream_channel_map(adev->platform, out->channel_mask,
		out->pcm_device_id, &out->channel_map_param.channel_map[0]);
		@@ -4225,6 +4232,38 @@ static int out_set_voip_volume(struct audio_stream_out *stream, float left,
		return 0;
		}

		static int out_set_pcm_volume(struct audio_stream_out *stream, float left,
		float right)
		{
		struct stream_out out = (struct stream_out )stream;
		/* Volume control for pcm playback */
		if (left != right) {
		return -EINVAL;
		} else {
		char mixer_ctl_name[128];
		struct audio_device *adev = out->dev;
		struct mixer_ctl *ctl;
		int pcm_device_id = platform_get_pcm_device_id(out->usecase, PCM_PLAYBACK);
		snprintf(mixer_ctl_name, sizeof(mixer_ctl_name), "Playback %d Volume", pcm_device_id);
		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;
		}

		int volume = (int) (left * PCM_PLAYBACK_VOLUME_MAX);
		int ret = mixer_ctl_set_value(ctl, 0, volume);
		if (ret < 0) {
		ALOGE("%s: Could not set ctl, error:%d ", __func__, ret);
		return -EINVAL;
		}

		ALOGV("%s : Pcm set volume value %d left %f", __func__, volume, left);

		return 0;
		}
		}

		static int out_set_volume(struct audio_stream_out *stream, float left,
		float right)
		{
		@@ -4274,6 +4313,17 @@ static int out_set_volume(struct audio_stream_out *stream, float left,
		out->volume_l = left;
		out->volume_r = right;
		return ret;
		} else if (out->usecase == USECASE_AUDIO_PLAYBACK_LOW_LATENCY \|\|
		out->usecase == USECASE_AUDIO_PLAYBACK_DEEP_BUFFER) {
		/* Volume control for pcm playback */
		if (!out->standby)
		ret = out_set_pcm_volume(stream, left, right);
		else
		out->apply_volume = true;

		out->volume_l = left;
		out->volume_r = right;
		return ret;
		}

		return -ENOSYS;

hal/audio_hw.h

100755 → 100644

+1 −0

Original line number	Diff line number	Diff line
		@@ -351,6 +351,7 @@ struct stream_out {
		bool a2dp_compress_mute;
		float volume_l;
		float volume_r;
		bool apply_volume;

		char pm_qos_mixer_path[MAX_MIXER_PATH_LEN];
		int hal_output_suspend_supported;