commit fa9d228c712097becf2a48b3f504099cb202a4c0
author Sudheer Papothi <spapothi@codeaurora.org> Thu Sep 17 01:53:25 2015 +0530
committer Sudheer Papothi <spapothi@codeaurora.org> Tue Oct 20 06:21:47 2015 +0530
tree b1424dee598134e7dab6028d7ba06f5865c201bc
parent 446c39660b189c1526398549be1dd5e18a71f1bd

hal: Add performance lock for playback usecase

Add performance lock during device path bringup in
playback usecase to reduce cold start output latency.

Change-Id: I2ff217beedb270f057fd4ea577a7a317ee1f20e6

hal/audio_hw.c

diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 37ef743..b30e3bc 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -1128,7 +1128,9 @@
     uc_info->out_snd_device = SND_DEVICE_NONE;
 
     list_add_tail(&adev->usecase_list, &uc_info->list);
-    audio_extn_perf_lock_acquire();
+    audio_extn_perf_lock_acquire(&adev->perf_lock_handle, 0,
+                                 adev->perf_lock_opts,
+                                 adev->perf_lock_opts_size);
     select_devices(adev, in->usecase);
 
     ALOGV("%s: Opening PCM device card_id(%d) device_id(%d), channels %d",
@@ -1170,16 +1172,14 @@
         goto error_open;
     }
 
-    audio_extn_perf_lock_release();
-
+    audio_extn_perf_lock_release(&adev->perf_lock_handle);
     ALOGD("%s: exit", __func__);
 
     return ret;
 
 error_open:
+    audio_extn_perf_lock_release(&adev->perf_lock_handle);
     stop_input_stream(in);
-    audio_extn_perf_lock_release();
-
 error_config:
     adev->active_input = NULL;
     /*
@@ -1648,6 +1648,9 @@
     }
     list_add_tail(&adev->usecase_list, &uc_info->list);
 
+    audio_extn_perf_lock_acquire(&adev->perf_lock_handle, 0,
+                                 adev->perf_lock_opts,
+                                 adev->perf_lock_opts_size);
     select_devices(adev, out->usecase);
 
     ALOGV("%s: Opening PCM device card_id(%d) device_id(%d) format(%#x)",
@@ -1738,11 +1741,12 @@
             audio_extn_check_and_set_dts_hpx_state(adev);
         }
     }
-
+    audio_extn_perf_lock_release(&adev->perf_lock_handle);
     ALOGD("%s: exit", __func__);
 
     return 0;
 error_open:
+    audio_extn_perf_lock_release(&adev->perf_lock_handle);
     stop_output_stream(out);
 error_config:
     /*
@@ -3665,7 +3669,6 @@
     /* This stream could be for sound trigger lab,
        get sound trigger pcm if present */
     audio_extn_sound_trigger_check_and_get_session(in);
-    audio_extn_perf_lock_init();
 
     *stream_in = &in->stream;
     ALOGV("%s: exit", __func__);
@@ -3826,6 +3829,9 @@
     adev->cur_wfd_channels = 2;
     adev->offload_usecases_state = 0;
     adev->is_channel_status_set = false;
+    adev->perf_lock_opts[0] = 0x101;
+    adev->perf_lock_opts[1] = 0x20E;
+    adev->perf_lock_opts_size = 2;
 
     pthread_mutex_init(&adev->snd_card_status.lock, (const pthread_mutexattr_t *) NULL);
     adev->snd_card_status.state = SND_CARD_STATE_OFFLINE;
@@ -3943,6 +3949,7 @@
     if (adev->adm_init)
         adev->adm_data = adev->adm_init();
 
+    audio_extn_perf_lock_init();
     ALOGV("%s: exit", __func__);
     return 0;
 }