PNG_READ_RGB_TO_GRAY_SUPPORTED

• PNG_16BIT_SUPPORTED
• PNG_ALIGNED_MEMORY_SUPPORTED
• PNG_API_RULE
• PNG_ARM_NEON_API_SUPPORTED
• PNG_ARM_NEON_CHECK_SUPPORTED
• PNG_BENIGN_ERRORS_SUPPORTED
• PNG_BENIGN_READ_ERRORS_SUPPORTED
• PNG_BENIGN_WRITE_ERRORS_SUPPORTED
• PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
• PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
• PNG_COLORSPACE_SUPPORTED
• PNG_CONSOLE_IO_SUPPORTED
• PNG_CONVERT_tIME_SUPPORTED
• PNG_DEFAULT_READ_MACROS
• PNG_EASY_ACCESS_SUPPORTED
• PNG_ERROR_NUMBERS_SUPPORTED
• PNG_ERROR_TEXT_SUPPORTED
• PNG_FIXED_POINT_SUPPORTED
• PNG_FLOATING_ARITHMETIC_SUPPORTED
• PNG_FLOATING_POINT_SUPPORTED
• PNG_FORMAT_AFIRST_SUPPORTED
• PNG_FORMAT_BGR_SUPPORTED
• PNG_GAMMA_SUPPORTED
• PNG_GAMMA_THRESHOLD_FIXED
• PNG_GET_PALETTE_MAX_SUPPORTED
• PNG_HANDLE_AS_UNKNOWN_SUPPORTED
• PNG_IDAT_READ_SIZE
• PNG_INCH_CONVERSIONS_SUPPORTED
• PNG_INFLATE_BUF_SIZE
• PNG_INFO_IMAGE_SUPPORTED
• PNG_IO_STATE_SUPPORTED
• PNG_MAX_GAMMA_8
• PNG_MNG_FEATURES_SUPPORTED
• PNG_POINTER_INDEXING_SUPPORTED
• PNG_POWERPC_VSX_API_SUPPORTED
• PNG_POWERPC_VSX_CHECK_SUPPORTED
• PNG_PROGRESSIVE_READ_SUPPORTED
• PNG_QUANTIZE_BLUE_BITS
• PNG_QUANTIZE_GREEN_BITS
• PNG_QUANTIZE_RED_BITS
• PNG_READ_16BIT_SUPPORTED
• PNG_READ_ALPHA_MODE_SUPPORTED
• PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
• PNG_READ_BACKGROUND_SUPPORTED
• PNG_READ_BGR_SUPPORTED
• PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
• PNG_READ_COMPOSITE_NODIV_SUPPORTED
• PNG_READ_COMPRESSED_TEXT_SUPPORTED
• PNG_READ_EXPAND_16_SUPPORTED
• PNG_READ_EXPAND_SUPPORTED
• PNG_READ_FILLER_SUPPORTED
• PNG_READ_GAMMA_SUPPORTED
• PNG_READ_GET_PALETTE_MAX_SUPPORTED
• PNG_READ_GRAY_TO_RGB_SUPPORTED
• PNG_READ_INTERLACING_SUPPORTED
• PNG_READ_INT_FUNCTIONS_SUPPORTED
• PNG_READ_INVERT_ALPHA_SUPPORTED
• PNG_READ_INVERT_SUPPORTED
• PNG_READ_OPT_PLTE_SUPPORTED
• PNG_READ_PACKSWAP_SUPPORTED
• PNG_READ_PACK_SUPPORTED
• PNG_READ_QUANTIZE_SUPPORTED
• PNG_READ_RGB_TO_GRAY_SUPPORTED
• PNG_READ_SCALE_16_TO_8_SUPPORTED
• PNG_READ_SHIFT_SUPPORTED
• PNG_READ_STRIP_16_TO_8_SUPPORTED
• PNG_READ_STRIP_ALPHA_SUPPORTED
• PNG_READ_SUPPORTED
• PNG_READ_SWAP_ALPHA_SUPPORTED
• PNG_READ_SWAP_SUPPORTED
• PNG_READ_TEXT_SUPPORTED
• PNG_READ_TRANSFORMS_SUPPORTED
• PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
• PNG_READ_USER_CHUNKS_SUPPORTED
• PNG_READ_USER_TRANSFORM_SUPPORTED
• PNG_READ_bKGD_SUPPORTED
• PNG_READ_cHRM_SUPPORTED
• PNG_READ_eXIf_SUPPORTED
• PNG_READ_gAMA_SUPPORTED
• PNG_READ_hIST_SUPPORTED
• PNG_READ_iCCP_SUPPORTED
• PNG_READ_iTXt_SUPPORTED
• PNG_READ_oFFs_SUPPORTED
• PNG_READ_pCAL_SUPPORTED
• PNG_READ_pHYs_SUPPORTED
• PNG_READ_sBIT_SUPPORTED
• PNG_READ_sCAL_SUPPORTED
• PNG_READ_sPLT_SUPPORTED
• PNG_READ_sRGB_SUPPORTED
• PNG_READ_tEXt_SUPPORTED
• PNG_READ_tIME_SUPPORTED
• PNG_READ_tRNS_SUPPORTED
• PNG_READ_zTXt_SUPPORTED
• PNG_SAFE_LIMITS_SUPPORTED
• PNG_SAVE_INT_32_SUPPORTED
• PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
• PNG_SEQUENTIAL_READ_SUPPORTED
• PNG_SETJMP_SUPPORTED
• PNG_SET_OPTION_SUPPORTED
• PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
• PNG_SET_USER_LIMITS_SUPPORTED
• PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED
• PNG_SIMPLIFIED_READ_BGR_SUPPORTED
• PNG_SIMPLIFIED_READ_SUPPORTED
• PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
• PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
• PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED
• PNG_SIMPLIFIED_WRITE_SUPPORTED
• PNG_STDIO_SUPPORTED
• PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
• PNG_TEXT_SUPPORTED
• PNG_TEXT_Z_DEFAULT_COMPRESSION
• PNG_TEXT_Z_DEFAULT_STRATEGY
• PNG_TIME_RFC1123_SUPPORTED
• PNG_UNKNOWN_CHUNKS_SUPPORTED
• PNG_USER_CHUNKS_SUPPORTED
• PNG_USER_CHUNK_CACHE_MAX
• PNG_USER_CHUNK_MALLOC_MAX
• PNG_USER_HEIGHT_MAX
• PNG_USER_LIMITS_SUPPORTED
• PNG_USER_MEM_SUPPORTED
• PNG_USER_TRANSFORM_INFO_SUPPORTED
• PNG_USER_TRANSFORM_PTR_SUPPORTED
• PNG_USER_WIDTH_MAX
• PNG_WARNINGS_SUPPORTED
• PNG_WRITE_16BIT_SUPPORTED
• PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
• PNG_WRITE_BGR_SUPPORTED
• PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
• PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
• PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED
• PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
• PNG_WRITE_FILLER_SUPPORTED
• PNG_WRITE_FILTER_SUPPORTED
• PNG_WRITE_FLUSH_SUPPORTED
• PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
• PNG_WRITE_INTERLACING_SUPPORTED
• PNG_WRITE_INT_FUNCTIONS_SUPPORTED
• PNG_WRITE_INVERT_ALPHA_SUPPORTED
• PNG_WRITE_INVERT_SUPPORTED
• PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
• PNG_WRITE_PACKSWAP_SUPPORTED
• PNG_WRITE_PACK_SUPPORTED
• PNG_WRITE_SHIFT_SUPPORTED
• PNG_WRITE_SUPPORTED
• PNG_WRITE_SWAP_ALPHA_SUPPORTED
• PNG_WRITE_SWAP_SUPPORTED
• PNG_WRITE_TEXT_SUPPORTED
• PNG_WRITE_TRANSFORMS_SUPPORTED
• PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
• PNG_WRITE_USER_TRANSFORM_SUPPORTED
• PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
• PNG_WRITE_bKGD_SUPPORTED
• PNG_WRITE_cHRM_SUPPORTED
• PNG_WRITE_eXIf_SUPPORTED
• PNG_WRITE_gAMA_SUPPORTED
• PNG_WRITE_hIST_SUPPORTED
• PNG_WRITE_iCCP_SUPPORTED
• PNG_WRITE_iTXt_SUPPORTED
• PNG_WRITE_oFFs_SUPPORTED
• PNG_WRITE_pCAL_SUPPORTED
• PNG_WRITE_pHYs_SUPPORTED
• PNG_WRITE_sBIT_SUPPORTED
• PNG_WRITE_sCAL_SUPPORTED
• PNG_WRITE_sPLT_SUPPORTED
• PNG_WRITE_sRGB_SUPPORTED
• PNG_WRITE_tEXt_SUPPORTED
• PNG_WRITE_tIME_SUPPORTED
• PNG_WRITE_tRNS_SUPPORTED
• PNG_WRITE_zTXt_SUPPORTED
• PNG_ZBUF_SIZE
• PNG_ZLIB_VERNUM
• PNG_Z_DEFAULT_COMPRESSION
• PNG_Z_DEFAULT_NOFILTER_STRATEGY
• PNG_Z_DEFAULT_STRATEGY
• PNG_bKGD_SUPPORTED
• PNG_cHRM_SUPPORTED
• PNG_eXIf_SUPPORTED
• PNG_gAMA_SUPPORTED
• PNG_hIST_SUPPORTED
• PNG_iCCP_SUPPORTED
• PNG_iTXt_SUPPORTED
• PNG_oFFs_SUPPORTED
• PNG_pCAL_SUPPORTED
• PNG_pHYs_SUPPORTED
• PNG_sBIT_SUPPORTED
• PNG_sCAL_PRECISION
• PNG_sCAL_SUPPORTED
• PNG_sPLT_SUPPORTED
• PNG_sRGB_PROFILE_CHECKS
• PNG_sRGB_SUPPORTED
• PNG_tEXt_SUPPORTED
• PNG_tIME_SUPPORTED
• PNG_tRNS_SUPPORTED
• PNG_zTXt_SUPPORTED