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88 * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
95 /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
125 * (valid & PNG_INFO_sBIT) is non-zero.
139 * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
150 * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
159 * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
169 * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
181 * is non-zero.
191 * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero.
213 * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
239 png_byte iccp_compression; /* Always zero */
254 * non-zero.
263 non-zero */
264 /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
