src/helpers/Format.hpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

#pragma once

#include <cstdint>
#include "math/Math.hpp"

typedef uint32_t DRMFormat;
typedef uint32_t SHMFormat;

struct SPixelFormat {
    DRMFormat drmFormat        = 0; /* DRM_FORMAT_INVALID */
    bool      flipRB           = false;
    int       glInternalFormat = 0;
    int       glFormat         = 0;
    int       glType           = 0;
    bool      withAlpha        = true;
    DRMFormat alphaStripped    = 0; /* DRM_FORMAT_INVALID */
    uint32_t  bytesPerBlock    = 0;
    Vector2D  blockSize;
};

struct SDRMFormat {
    uint32_t              format = 0;
    std::vector<uint64_t> mods;
};

namespace FormatUtils {
    SHMFormat           drmToShm(DRMFormat drm);
    DRMFormat           shmToDRM(SHMFormat shm);

    const SPixelFormat* getPixelFormatFromDRM(DRMFormat drm);
    const SPixelFormat* getPixelFormatFromGL(uint32_t glFormat, uint32_t glType, bool alpha);
    bool                isFormatOpaque(DRMFormat drm);
    int                 pixelsPerBlock(const SPixelFormat* const fmt);
    int                 minStride(const SPixelFormat* const fmt, int32_t width);
    uint32_t            drmFormatToGL(DRMFormat drm);
    uint32_t            glFormatToType(uint32_t gl);
};