81 lines
3.4 KiB
C++
81 lines
3.4 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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#ifndef DRACO_COMPRESSION_DECODE_H_
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#define DRACO_COMPRESSION_DECODE_H_
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#include "draco/compression/config/compression_shared.h"
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#include "draco/compression/config/decoder_options.h"
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#include "draco/core/decoder_buffer.h"
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#include "draco/core/status_or.h"
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#include "draco/draco_features.h"
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#include "draco/mesh/mesh.h"
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namespace draco {
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// Class responsible for decoding of meshes and point clouds that were
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// compressed by a Draco encoder.
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class Decoder {
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public:
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// Returns the geometry type encoded in the input |in_buffer|.
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// The return value is one of POINT_CLOUD, MESH or INVALID_GEOMETRY in case
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// the input data is invalid.
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// The decoded geometry type can be used to choose an appropriate decoding
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// function for a given geometry type (see below).
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static StatusOr<EncodedGeometryType> GetEncodedGeometryType(
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DecoderBuffer *in_buffer);
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// Decodes point cloud from the provided buffer. The buffer must be filled
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// with data that was encoded with either the EncodePointCloudToBuffer or
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// EncodeMeshToBuffer methods in encode.h. In case the input buffer contains
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// mesh, the returned instance can be down-casted to Mesh.
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StatusOr<std::unique_ptr<PointCloud>> DecodePointCloudFromBuffer(
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DecoderBuffer *in_buffer);
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// Decodes a triangular mesh from the provided buffer. The mesh must be filled
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// with data that was encoded using the EncodeMeshToBuffer method in encode.h.
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// The function will return nullptr in case the input is invalid or if it was
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// encoded with the EncodePointCloudToBuffer method.
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StatusOr<std::unique_ptr<Mesh>> DecodeMeshFromBuffer(
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DecoderBuffer *in_buffer);
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// Decodes the buffer into a provided geometry. If the geometry is
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// incompatible with the encoded data. For example, when |out_geometry| is
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// draco::Mesh while the data contains a point cloud, the function will return
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// an error status.
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Status DecodeBufferToGeometry(DecoderBuffer *in_buffer,
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PointCloud *out_geometry);
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Status DecodeBufferToGeometry(DecoderBuffer *in_buffer, Mesh *out_geometry);
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// When set, the decoder is going to skip attribute transform for a given
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// attribute type. For example for quantized attributes, the decoder would
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// skip the dequantization step and the returned geometry would contain an
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// attribute with quantized values. The attribute would also contain an
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// instance of AttributeTransform class that is used to describe the skipped
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// transform, including all parameters that are needed to perform the
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// transform manually.
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void SetSkipAttributeTransform(GeometryAttribute::Type att_type);
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// Returns the options instance used by the decoder that can be used by users
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// to control the decoding process.
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DecoderOptions *options() { return &options_; }
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private:
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DecoderOptions options_;
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};
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} // namespace draco
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#endif // DRACO_COMPRESSION_DECODE_H_
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