ImageAsset.h

#pragma once
 
#include <CesiumGltf/Ktx2TranscodeTargets.h>
#include <CesiumGltf/Library.h>
#include <CesiumUtility/SharedAsset.h>
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
namespace CesiumGltf {

struct CESIUMGLTF_API ImageAssetMipPosition {
  size_t byteOffset;

  size_t byteSize;
};

struct CESIUMGLTF_API ImageAsset final
    : public CesiumUtility::SharedAsset<ImageAsset> {
  int32_t width = 0;

  int32_t height = 0;

  int32_t channels = 4;

  int32_t bytesPerChannel = 1;

  GpuCompressedPixelFormat compressedPixelFormat =
      GpuCompressedPixelFormat::NONE;

  std::vector<ImageAssetMipPosition> mipPositions;

  std::vector<std::byte> pixelData;

  int64_t sizeBytes = -1;

  ImageAsset() = default;

  void changeNumberOfChannels(
      int32_t newChannels,
      std::byte defaultValue = std::byte{0});

  int64_t getSizeBytes() const {
    return this->sizeBytes >= 0 ? this->sizeBytes
                                : static_cast<int64_t>(this->pixelData.size());
  }
};
} // namespace CesiumGltf