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| author | swurl <swurl@swurl.xyz> | 2025-05-31 02:33:02 -0400 |
|---|---|---|
| committer | swurl <swurl@swurl.xyz> | 2025-05-31 02:33:02 -0400 |
| commit | 6c655321e6b04b8648802e296bb5ca11d290ae68 (patch) | |
| tree | 5c906511e4a2910ce8b806bb9d763b524c28619e /externals/oboe/src/flowgraph/SinkI24.cpp | |
| parent | c0cceff365f754f8859f4c9a0362ebdba7ea388b (diff) | |
Move dead submodules in-tree
Signed-off-by: swurl <swurl@swurl.xyz>
Diffstat (limited to 'externals/oboe/src/flowgraph/SinkI24.cpp')
| -rw-r--r-- | externals/oboe/src/flowgraph/SinkI24.cpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/externals/oboe/src/flowgraph/SinkI24.cpp b/externals/oboe/src/flowgraph/SinkI24.cpp new file mode 100644 index 0000000000..d4f68b6847 --- /dev/null +++ b/externals/oboe/src/flowgraph/SinkI24.cpp @@ -0,0 +1,66 @@ +/* + * Copyright 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. + */ + +#include <algorithm> +#include <unistd.h> + + +#include "FlowGraphNode.h" +#include "SinkI24.h" + +#if FLOWGRAPH_ANDROID_INTERNAL +#include <audio_utils/primitives.h> +#endif + +using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph; + +SinkI24::SinkI24(int32_t channelCount) + : FlowGraphSink(channelCount) {} + +int32_t SinkI24::read(void *data, int32_t numFrames) { + uint8_t *byteData = (uint8_t *) data; + const int32_t channelCount = input.getSamplesPerFrame(); + + int32_t framesLeft = numFrames; + while (framesLeft > 0) { + // Run the graph and pull data through the input port. + int32_t framesRead = pullData(framesLeft); + if (framesRead <= 0) { + break; + } + const float *floatData = input.getBuffer(); + int32_t numSamples = framesRead * channelCount; +#if FLOWGRAPH_ANDROID_INTERNAL + memcpy_to_p24_from_float(byteData, floatData, numSamples); + static const int kBytesPerI24Packed = 3; + byteData += numSamples * kBytesPerI24Packed; + floatData += numSamples; +#else + const int32_t kI24PackedMax = 0x007FFFFF; + const int32_t kI24PackedMin = 0xFF800000; + for (int i = 0; i < numSamples; i++) { + int32_t n = (int32_t) (*floatData++ * 0x00800000); + n = std::min(kI24PackedMax, std::max(kI24PackedMin, n)); // clip + // Write as a packed 24-bit integer in Little Endian format. + *byteData++ = (uint8_t) n; + *byteData++ = (uint8_t) (n >> 8); + *byteData++ = (uint8_t) (n >> 16); + } +#endif + framesLeft -= framesRead; + } + return numFrames - framesLeft; +} |
