29 lines
836 B
C++
29 lines
836 B
C++
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// Copyright (c) 2023 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <packager/media/codecs/dts_audio_specific_config.h>
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#include <packager/media/base/bit_reader.h>
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#include <packager/media/base/rcheck.h>
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namespace shaka {
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namespace media {
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bool GetDTSXChannelMask(const std::vector<uint8_t>& udts, uint32_t& mask) {
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// udts is the DTS-UHD Specific Box: ETSI TS 103 491 V1.2.1 Table B-2
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// DecoderProfileCode(6 bits)
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// FrameDurationCode(2 bits)
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// MaxPayloadCode(3 bits)
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// NumPresentationsCode(5 bits)
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// ChannelMask (32 bits)
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BitReader bit_reader(udts.data(), udts.size());
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RCHECK(bit_reader.SkipBits(16));
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RCHECK(bit_reader.ReadBits(32, &mask));
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return true;
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}
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} // namespace media
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} // namespace shaka
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