aaudio: add support for 24 and 32 bit PCM
Add new formats: AAUDIO_FORMAT_PCM_I24_PACKED
and AAUDIO_FORMAT_PCM_I32.
Pass formats to Legacy AudioTrack and AuddioRecord.
Request 24_PACKED in AAudio Service for MMAP streams.
Also add a flowgraph module for converting the I32 data
to/from FLOAT.
Bug: 65067568
Bug: 157671580
Test: To determine which format the MMAP path is using for the DSP,
Test: adb shell dumpsys media.aaudio
Test: then look for the "Exclusive MMAP Endpoints" and "Format:".
Test: The formats listed are the internal AudioFlinger formats:
Test: 1=16_BIT, 3=32_BIT, 4=8_24_BIT, 5=FLOAT, 6=24_BIT_PACKED
Test: atest AAudioTestCases
Test: adb shell write_sine_callback -? # to list new formats
Test: adb shell write_sine_callback -pl -f3 # MMAP LOWLAT I24_PACKED
Test: adb shell write_sine_callback -pl -f4 # MMAP LOWLAT I32
Test: # Legacy LOWLAT I24_PACKED
Test: adb shell write_sine_callback -pl -f3 -m1
Test: adb shell write_sine_callback -pl -f4 -m1 # Legacy LOWLAT I32
Test: adb shell write_sine_callback -pn -f3 # Legacy I24_PACKED
Test: adb shell write_sine_callback -pn -f4 # Legacy I32
Change-Id: Ibe13bfd54425d110f50f89eb10c63872a2f99839
diff --git a/media/libaaudio/src/flowgraph/SourceI32.cpp b/media/libaaudio/src/flowgraph/SourceI32.cpp
new file mode 100644
index 0000000..e8177ad
--- /dev/null
+++ b/media/libaaudio/src/flowgraph/SourceI32.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020 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.
+ */
+
+#include <algorithm>
+#include <unistd.h>
+
+#ifdef __ANDROID__
+#include <audio_utils/primitives.h>
+#endif
+
+#include "AudioProcessorBase.h"
+#include "SourceI32.h"
+
+using namespace flowgraph;
+
+SourceI32::SourceI32(int32_t channelCount)
+ : AudioSource(channelCount) {
+}
+
+int32_t SourceI32::onProcess(int64_t framePosition, int32_t numFrames) {
+ float *floatData = output.getBlock();
+ int32_t channelCount = output.getSamplesPerFrame();
+
+ int32_t framesLeft = mSizeInFrames - mFrameIndex;
+ int32_t framesToProcess = std::min(numFrames, framesLeft);
+ int32_t numSamples = framesToProcess * channelCount;
+
+ const int32_t *intBase = static_cast<const int32_t *>(mData);
+ const int32_t *intData = &intBase[mFrameIndex * channelCount];
+
+#ifdef __ANDROID__
+ memcpy_to_float_from_i32(floatData, intData, numSamples);
+#else
+ for (int i = 0; i < numSamples; i++) {
+ *floatData++ = *intData++ * kScale;
+ }
+#endif
+
+ mFrameIndex += framesToProcess;
+ return framesToProcess;
+}