audio: Kang audio HAL from amlogic yukawa device

Copied from device/amlogic/generic/hal/audio/ minus the
speaker equalizer filter file.

It is a generic and more feature rich HAL, plus it fixes
the occasional static noise we hear on db845c and PocoF1.

Removed the mixer control settings from qcom/init.qcom.rc
and added HDMI out mixer control in etc/mixer_paths.xml
to start with. ** Analog audio out is not tested yet. **

ToDo:
1. Fallback to Analog audio port if the monitor doesn't
   support HDMI audio out.
2. Mic AEC support is integrated deep in this HAL, so I
   didn't remove it. Might as well test and use that
   feature on Pixel 3 and Poco F1. Same with speaker EQ,
   though we may end up never using this equalizer
   feature at all.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Change-Id: I85614abdd684ab67f405f4c0e48380668ade4e06

1 files changed, 35 insertions, 0 deletions

diff --git a/audio/fifo_wrapper.h b/audio/fifo_wrapper.h
new file mode 100644
index 0000000..e9469ef
--- /dev/null
+++ b/audio/fifo_wrapper.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _AUDIO_FIFO_WRAPPER_H_
+#define _AUDIO_FIFO_WRAPPER_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void *fifo_init(uint32_t bytes, bool reader_throttles_writer);
+void fifo_release(void *fifo_itfe);
+ssize_t fifo_read(void *fifo_itfe, void *buffer, size_t bytes);
+ssize_t fifo_write(void *fifo_itfe, void *buffer, size_t bytes);
+ssize_t fifo_available_to_read(void *fifo_itfe);
+ssize_t fifo_available_to_write(void *fifo_itfe);
+ssize_t fifo_flush(void *fifo_itfe);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* #ifndef _AUDIO_FIFO_WRAPPER_H_ */