| 1 | // |
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| 2 | // SPDX-License-Identifier: BSD-3-Clause |
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| 3 | // Copyright (c) Contributors to the OpenEXR Project. |
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| 4 | // |
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| 5 | |
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| 6 | #ifndef INCLUDED_IMF_DEEPIMAGESTATE_H |
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| 7 | #define INCLUDED_IMF_DEEPIMAGESTATE_H |
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| 8 | |
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| 9 | //----------------------------------------------------------------------------- |
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| 10 | // |
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| 11 | // enum DeepImageState -- describes how orderly the pixel data |
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| 12 | // in a deep image are |
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| 13 | // |
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| 14 | // The samples in a deep image pixel may be sorted according to |
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| 15 | // depth, and the sample depths or depth ranges may or may not |
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| 16 | // overlap each other. A pixel is |
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| 17 | // |
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| 18 | // - SORTED if for every i and j with i < j |
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| 19 | // |
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| 20 | // (Z[i] < Z[j]) || (Z[i] == Z[j] && ZBack[i] < ZBack[j]), |
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| 21 | // |
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| 22 | // - NON_OVERLAPPING if for every i and j with i != j |
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| 23 | // |
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| 24 | // (Z[i] < Z[j] && ZBack[i] <= Z[j]) || |
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| 25 | // (Z[j] < Z[i] && ZBack[j] <= Z[i]) || |
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| 26 | // (Z[i] == Z[j] && ZBack[i] <= Z[i] & ZBack[j] > Z[j]) || |
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| 27 | // (Z[i] == Z[j] && ZBack[j] <= Z[j] & ZBack[i] > Z[i]), |
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| 28 | // |
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| 29 | // - TIDY if it is SORTED and NON_OVERLAPPING, |
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| 30 | // |
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| 31 | // - MESSY if it is neither SORTED nor NON_OVERLAPPING. |
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| 32 | // |
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| 33 | // A deep image is |
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| 34 | // |
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| 35 | // - MESSY if at least one of its pixels is MESSY, |
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| 36 | // - SORTED if all of its pixels are SORTED, |
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| 37 | // - NON_OVERLAPPING if all of its pixels are NON_OVERLAPPING, |
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| 38 | // - TIDY if all of its pixels are TIDY. |
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| 39 | // |
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| 40 | // Note: the rather complicated definition of NON_OVERLAPPING prohibits |
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| 41 | // overlapping volume samples, coincident point samples and point samples |
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| 42 | // in the middle of a volume sample, but it does allow point samples at |
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| 43 | // the front or back of a volume sample. |
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| 44 | // |
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| 45 | //----------------------------------------------------------------------------- |
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| 46 | |
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| 47 | #include "ImfExport.h" |
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| 48 | #include "ImfNamespace.h" |
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| 49 | |
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| 50 | |
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| 51 | OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER |
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| 52 | |
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| 53 | enum IMF_EXPORT_ENUM DeepImageState : int |
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| 54 | { |
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| 55 | DIS_MESSY = 0, |
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| 56 | DIS_SORTED = 1, |
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| 57 | DIS_NON_OVERLAPPING = 2, |
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| 58 | DIS_TIDY = 3, |
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| 59 | |
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| 60 | DIS_NUMSTATES // Number of different image states |
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| 61 | }; |
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| 62 | |
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| 63 | OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT |
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| 64 | |
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| 65 | |
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| 66 | #endif |
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| 67 | |
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