Function WriteChannelInfo

SampleFramework12/v1.00/TinyEXR.cpp:6823–6866

}

void WriteChannelInfo(std::vector<unsigned char> &data,
                      const std::vector<ChannelInfo> &channels) {

  size_t sz = 0;

  // Calculate total size.
  for (int c = 0; c < channels.size(); c++) {
    sz += strlen(channels[c].name.c_str()) + 1; // +1 for \0
    sz += 16;                                   // 4 * int
  }
  data.resize(sz + 1);

  unsigned char *p = &data.at(0);

  for (int c = 0; c < channels.size(); c++) {
    memcpy(p, channels[c].name.c_str(), strlen(channels[c].name.c_str()));
    p += strlen(channels[c].name.c_str());
    (*p) = '\0';
    p++;

    int pixelType = channels[c].pixelType;
    int xSampling = channels[c].xSampling;
    int ySampling = channels[c].ySampling;
    if (IsBigEndian()) {
      swap4(reinterpret_cast<unsigned int*>(&pixelType));
      swap4(reinterpret_cast<unsigned int*>(&xSampling));
      swap4(reinterpret_cast<unsigned int*>(&ySampling));
    }

    memcpy(p, &pixelType, sizeof(int));
    p += sizeof(int);

    (*p) = channels[c].pLinear;
    p += 4;

    memcpy(p, &xSampling, sizeof(int));
    p += sizeof(int);

    memcpy(p, &ySampling, sizeof(int));
    p += sizeof(int);
  }

  (*p) = '\0';
}

void CompressZip(unsigned char *dst, unsigned long long &compressedSize,
                 const unsigned char *src, unsigned long srcSize) {