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https://git.mirrors.martin98.com/https://github.com/google/draco
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45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright 2016 The Draco Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include "core/decoder_buffer.h"
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namespace draco {
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DecoderBuffer::DecoderBuffer()
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: data_(nullptr), data_size_(0), pos_(0), bit_mode_(false) {}
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void DecoderBuffer::Init(const char *data, size_t data_size) {
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data_ = data;
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data_size_ = data_size;
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pos_ = 0;
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}
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bool DecoderBuffer::StartBitDecoding(bool decode_size, uint64_t *out_size) {
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if (decode_size) {
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Decode(out_size);
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}
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bit_mode_ = true;
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bit_decoder_.reset(data_head(), remaining_size());
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return true;
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}
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void DecoderBuffer::EndBitDecoding() {
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bit_mode_ = false;
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const uint64_t bits_decoded = bit_decoder_.BitsDecoded();
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const uint64_t bytes_decoded = (bits_decoded + 7) / 8;
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pos_ += bytes_decoded;
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}
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} // namespace draco
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