aaudio: use new flowgraph to simplify processing
Construct a flowgraph based on the source and destination
format and channelCount. This is groundwork for supporting 24-bit
PCM formats.
Also cleaned up handling of device related format.
This CL removes more code than it adds.
Bug: 65067568
Test: write_sine_callback.cpp -pl
Test: write_sine_callback.cpp -pl -x
Test: input_monitor -pl
Test: input_monitor -pl -x
Change-Id: Ia155bff0164912011d09b61b54f983ccf4490bd1
diff --git a/media/libaaudio/src/client/AAudioFlowGraph.h b/media/libaaudio/src/client/AAudioFlowGraph.h
new file mode 100644
index 0000000..a49f64e
--- /dev/null
+++ b/media/libaaudio/src/client/AAudioFlowGraph.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2018 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 ANDROID_AAUDIO_FLOW_GRAPH_H
+#define ANDROID_AAUDIO_FLOW_GRAPH_H
+
+#include <memory>
+#include <stdint.h>
+#include <sys/types.h>
+#include <system/audio.h>
+
+#include <aaudio/AAudio.h>
+#include <flowgraph/ClipToRange.h>
+#include <flowgraph/MonoToMultiConverter.h>
+#include <flowgraph/RampLinear.h>
+
+class AAudioFlowGraph {
+public:
+ /** Connect several modules together to convert from source to sink.
+ * This should only be called once for each instance.
+ *
+ * @param sourceFormat
+ * @param sourceChannelCount
+ * @param sinkFormat
+ * @param sinkChannelCount
+ * @return
+ */
+ aaudio_result_t configure(audio_format_t sourceFormat,
+ int32_t sourceChannelCount,
+ audio_format_t sinkFormat,
+ int32_t sinkChannelCount);
+
+ void process(const void *source, void *destination, int32_t numFrames);
+
+ /**
+ * @param volume between 0.0 and 1.0
+ */
+ void setTargetVolume(float volume);
+
+ void setRampLengthInFrames(int32_t numFrames);
+
+private:
+ std::unique_ptr<flowgraph::AudioSource> mSource;
+ std::unique_ptr<flowgraph::RampLinear> mVolumeRamp;
+ std::unique_ptr<flowgraph::ClipToRange> mClipper;
+ std::unique_ptr<flowgraph::MonoToMultiConverter> mChannelConverter;
+ std::unique_ptr<flowgraph::AudioSink> mSink;
+};
+
+
+#endif //ANDROID_AAUDIO_FLOW_GRAPH_H