Add SpdifStreamIn data path
The SpdifStreamIn path is taken for compressed audio records that need
decoding from HAL input streams with IEC61937 encapsulated data.
Change-Id: I63a4fb2be3bb938ec23017b34a78d7312f26c4d1
diff --git a/services/audioflinger/datapath/AudioStreamIn.cpp b/services/audioflinger/datapath/AudioStreamIn.cpp
new file mode 100644
index 0000000..24f3bb9
--- /dev/null
+++ b/services/audioflinger/datapath/AudioStreamIn.cpp
@@ -0,0 +1,137 @@
+/*
+ *
+ * Copyright 2023, 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.
+ */
+
+#define LOG_TAG "AudioFlinger"
+//#define LOG_NDEBUG 0
+#include "AudioStreamIn.h"
+
+#include <media/audiohal/DeviceHalInterface.h>
+#include <media/audiohal/StreamHalInterface.h>
+#include <system/audio.h>
+#include <utils/Log.h>
+
+#include "AudioHwDevice.h"
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+AudioStreamIn::AudioStreamIn(AudioHwDevice *dev, audio_input_flags_t flags)
+ : audioHwDev(dev)
+ , flags(flags)
+{
+}
+
+// This must be defined here together with the HAL includes above and
+// not solely in the header.
+AudioStreamIn::~AudioStreamIn() = default;
+
+sp<DeviceHalInterface> AudioStreamIn::hwDev() const
+{
+ return audioHwDev->hwDevice();
+}
+
+status_t AudioStreamIn::getCapturePosition(int64_t* frames, int64_t* time)
+{
+ if (stream == nullptr) {
+ return NO_INIT;
+ }
+
+ int64_t halPosition = 0;
+ const status_t status = stream->getCapturePosition(&halPosition, time);
+ if (status != NO_ERROR) {
+ return status;
+ }
+
+ // Adjust for standby using HAL rate frames.
+ // Only apply this correction if the HAL is getting PCM frames.
+ if (mHalFormatHasProportionalFrames) {
+ const uint64_t adjustedPosition = (halPosition <= mFramesReadAtStandby) ?
+ 0 : (halPosition - mFramesReadAtStandby);
+ // Scale from HAL sample rate to application rate.
+ *frames = adjustedPosition / mRateMultiplier;
+ } else {
+ // For compressed formats.
+ *frames = halPosition;
+ }
+
+ return status;
+}
+
+status_t AudioStreamIn::open(
+ audio_io_handle_t handle,
+ audio_devices_t deviceType,
+ struct audio_config *config,
+ const char *address,
+ audio_source_t source,
+ audio_devices_t outputDevice,
+ const char *outputDeviceAddress)
+{
+ sp<StreamInHalInterface> inStream;
+
+ int status = hwDev()->openInputStream(
+ handle,
+ deviceType,
+ config,
+ flags,
+ address,
+ source,
+ outputDevice,
+ outputDeviceAddress,
+ &inStream);
+ ALOGV("AudioStreamIn::open(), HAL returned stream %p, sampleRate %d, format %#x,"
+ " channelMask %#x, status %d", inStream.get(), config->sample_rate, config->format,
+ config->channel_mask, status);
+
+ if (status == NO_ERROR) {
+ stream = inStream;
+ mHalFormatHasProportionalFrames = audio_has_proportional_frames(config->format);
+ status = stream->getFrameSize(&mHalFrameSize);
+ LOG_ALWAYS_FATAL_IF(status != OK, "Error retrieving frame size from HAL: %d", status);
+ LOG_ALWAYS_FATAL_IF(mHalFrameSize == 0, "Error frame size was %zu but must be greater than"
+ " zero", mHalFrameSize);
+ }
+
+ return status;
+}
+
+audio_config_base_t AudioStreamIn::getAudioProperties() const
+{
+ audio_config_base_t result = AUDIO_CONFIG_BASE_INITIALIZER;
+ if (stream->getAudioProperties(&result) != OK) {
+ result.sample_rate = 0;
+ result.channel_mask = AUDIO_CHANNEL_INVALID;
+ result.format = AUDIO_FORMAT_INVALID;
+ }
+ return result;
+}
+
+status_t AudioStreamIn::standby()
+{
+ mFramesReadAtStandby = mFramesRead;
+ return stream->standby();
+}
+
+status_t AudioStreamIn::read(void* buffer, size_t bytes, size_t* read)
+{
+ const status_t result = stream->read(buffer, bytes, read);
+ if (result == OK && *read > 0 && mHalFrameSize > 0) {
+ mFramesRead += *read / mHalFrameSize;
+ }
+ return result;
+}
+
+} // namespace android