/src/libheif/libheif/codecs/jpeg2000_dec.cc
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1 | | /* |
2 | | * HEIF codec. |
3 | | * Copyright (c) 2024 Dirk Farin <dirk.farin@gmail.com> |
4 | | * |
5 | | * This file is part of libheif. |
6 | | * |
7 | | * libheif is free software: you can redistribute it and/or modify |
8 | | * it under the terms of the GNU Lesser General Public License as |
9 | | * published by the Free Software Foundation, either version 3 of |
10 | | * the License, or (at your option) any later version. |
11 | | * |
12 | | * libheif is distributed in the hope that it will be useful, |
13 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | | * GNU Lesser General Public License for more details. |
16 | | * |
17 | | * You should have received a copy of the GNU Lesser General Public License |
18 | | * along with libheif. If not, see <http://www.gnu.org/licenses/>. |
19 | | */ |
20 | | |
21 | | #include "jpeg2000_dec.h" |
22 | | #include "jpeg2000_boxes.h" |
23 | | #include "error.h" |
24 | | #include "context.h" |
25 | | |
26 | | #include <string> |
27 | | |
28 | | |
29 | | Result<std::vector<uint8_t>> Decoder_JPEG2000::read_bitstream_configuration_data() const |
30 | 4.14k | { |
31 | 4.14k | return std::vector<uint8_t>{}; |
32 | 4.14k | } |
33 | | |
34 | | |
35 | | int Decoder_JPEG2000::get_luma_bits_per_pixel() const |
36 | 2.07k | { |
37 | 2.07k | Result<std::vector<uint8_t>> imageDataResult = get_compressed_data(true); |
38 | 2.07k | if (!imageDataResult) { |
39 | 7 | return -1; |
40 | 7 | } |
41 | | |
42 | 2.06k | JPEG2000MainHeader header; |
43 | 2.06k | Error err = header.parseHeader(*imageDataResult); |
44 | 2.06k | if (err) { |
45 | 26 | return -1; |
46 | 26 | } |
47 | 2.03k | return header.get_precision(0); |
48 | 2.06k | } |
49 | | |
50 | | |
51 | | int Decoder_JPEG2000::get_chroma_bits_per_pixel() const |
52 | 1.03k | { |
53 | 1.03k | Result<std::vector<uint8_t>> imageDataResult = get_compressed_data(true); |
54 | 1.03k | if (!imageDataResult) { |
55 | 4 | return -1; |
56 | 4 | } |
57 | | |
58 | 1.03k | JPEG2000MainHeader header; |
59 | 1.03k | Error err = header.parseHeader(*imageDataResult); |
60 | 1.03k | if (err) { |
61 | 14 | return -1; |
62 | 14 | } |
63 | 1.02k | return header.get_precision(1); |
64 | 1.03k | } |
65 | | |
66 | | |
67 | | Error Decoder_JPEG2000::get_coded_image_colorspace(heif_colorspace* out_colorspace, heif_chroma* out_chroma) const |
68 | 3.10k | { |
69 | | #if 0 |
70 | | *out_chroma = (heif_chroma) (m_hvcC->get_configuration().chroma_format); |
71 | | |
72 | | if (*out_chroma == heif_chroma_monochrome) { |
73 | | *out_colorspace = heif_colorspace_monochrome; |
74 | | } |
75 | | else { |
76 | | *out_colorspace = heif_colorspace_YCbCr; |
77 | | } |
78 | | #endif |
79 | | |
80 | 3.10k | *out_colorspace = heif_colorspace_YCbCr; |
81 | 3.10k | *out_chroma = heif_chroma_444; |
82 | | |
83 | 3.10k | return Error::Ok; |
84 | 3.10k | } |