1// basisu_basis_file.h
2// Copyright (C) 2019 Binomial LLC. All Rights Reserved.
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8// http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15#pragma once
16#include "../transcoder/basisu_file_headers.h"
17#include "basisu_backend.h"
18
19namespace basisu
20{
21 class basisu_file
22 {
23 BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(basisu_file);
24
25 public:
26 basisu_file()
27 {
28 }
29
30 void clear()
31 {
32 m_comp_data.clear();
33
34 clear_obj(m_header);
35 m_images_descs.clear();
36
37 m_header_file_ofs = 0;
38 m_slice_descs_file_ofs = 0;
39 m_endpoint_cb_file_ofs = 0;
40 m_selector_cb_file_ofs = 0;
41 m_tables_file_ofs = 0;
42 m_first_image_file_ofs = 0;
43 m_total_file_size = 0;
44 }
45
46 bool init(const basisu_backend_output& encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame);
47
48 const uint8_vec &get_compressed_data() const { return m_comp_data; }
49
50 private:
51 basist::basis_file_header m_header;
52 basisu::vector<basist::basis_slice_desc> m_images_descs;
53
54 uint8_vec m_comp_data;
55
56 uint32_t m_header_file_ofs;
57 uint32_t m_slice_descs_file_ofs;
58 uint32_t m_endpoint_cb_file_ofs;
59 uint32_t m_selector_cb_file_ofs;
60 uint32_t m_tables_file_ofs;
61 uint32_t m_first_image_file_ofs;
62 uint32_t m_total_file_size;
63
64 void create_header(const basisu_backend_output& encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame);
65 bool create_image_descs(const basisu_backend_output& encoder_output);
66 void create_comp_data(const basisu_backend_output& encoder_output);
67 void fixup_crcs();
68 };
69
70} // namespace basisu
71