diff options
| author | Robert Lee <lerobert@google.com> | 2020-06-02 10:10:39 +0800 |
|---|---|---|
| committer | Robert Lee <lerobert@google.com> | 2020-06-03 09:55:08 +0800 |
| commit | 7e30a80912f8a9b5f38b6f8a52cc62415edc7a76 (patch) | |
| tree | ff4aeaddaf4bc796b1422f76ed22cebcc729bddd | |
| parent | f030fe8ae0683949a9f251673b57bf9f48a309fa (diff) | |
| download | audio-7e30a80912f8a9b5f38b6f8a52cc62415edc7a76.tar.gz | |
hal: add gapless offload playback controlandroid11-dev
-Set the property-vendor.audio.offload.gapless.enabled to true to enable
gapless playback by default.
-Set mixer control to the driver to decide if gapless playback needs
to be used or not
-If gapless playback is not enabled then partial drain from HAL is
treated as full drain.
Bug: 157046086
Test: Test with Play Music
Change-Id: If010b7f730cc70dd55c2d4ff77ac272e60f3c4e2
Signed-off-by: Robert Lee <lerobert@google.com>
| -rw-r--r-- | hal/audio_hw.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/hal/audio_hw.c b/hal/audio_hw.c index 0f868ca..0f9dcf0 100644 --- a/hal/audio_hw.c +++ b/hal/audio_hw.c @@ -5002,6 +5002,30 @@ static void in_update_sink_metadata(struct audio_stream_in *stream, pthread_mutex_unlock(&in->lock); } +static int check_and_set_gapless_mode(struct audio_device *adev) +{ + bool gapless_enabled = false; + const char *mixer_ctl_name = "Compress Gapless Playback"; + struct mixer_ctl *ctl; + + ALOGV("%s:", __func__); + gapless_enabled = property_get_bool("vendor.audio.offload.gapless.enabled", false); + + 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; +} + static int adev_open_output_stream(struct audio_hw_device *dev, audio_io_handle_t handle, audio_devices_t devices, @@ -5170,6 +5194,9 @@ static int adev_open_output_stream(struct audio_hw_device *dev, out->non_blocking = 1; out->send_new_metadata = 1; + + check_and_set_gapless_mode(adev); + create_offload_callback_thread(out); ALOGV("%s: offloaded output offload_info version %04x bit rate %d", __func__, config->offload_info.version, |