guac_transfer_function guac_rdp_rop3_transfer_function()

in src/protocols/rdp/gdi.c [38:94]

• 20 lines of code
• 13 McCabe index (conditional complexity)

guac_transfer_function guac_rdp_rop3_transfer_function(guac_client* client,
        int rop3) {

    /* Translate supported ROP3 opcodes into composite modes */
    switch (rop3) {

        /* "DSon" !(src | dest) */
        case 0x11: return GUAC_TRANSFER_BINARY_NOR;

        /* "DSna" !src & dest */
        case 0x22: return GUAC_TRANSFER_BINARY_NSRC_AND;

        /* "Sn" !src */
        case 0x33: return GUAC_TRANSFER_BINARY_NSRC;

        /* "SDna" (src & !dest) */
        case 0x44: return GUAC_TRANSFER_BINARY_NDEST_AND;

        /* "Dn" !dest */
        case 0x55: return GUAC_TRANSFER_BINARY_NDEST;

        /* "SRCINVERT" (src ^ dest) */
        case 0x66: return GUAC_TRANSFER_BINARY_XOR;

        /* "DSan" !(src & dest) */
        case 0x77: return GUAC_TRANSFER_BINARY_NAND;

        /* "SRCAND" (src & dest) */
        case 0x88: return GUAC_TRANSFER_BINARY_AND;

        /* "DSxn" !(src ^ dest) */
        case 0x99: return GUAC_TRANSFER_BINARY_XNOR;

        /* "MERGEPAINT" (!src | dest)*/
        case 0xBB: return GUAC_TRANSFER_BINARY_NSRC_OR;

        /* "SDno" (src | !dest) */
        case 0xDD: return GUAC_TRANSFER_BINARY_NDEST_OR;

        /* "SRCPAINT" (src | dest) */
        case 0xEE: return GUAC_TRANSFER_BINARY_OR;

        /* 0x00 = "BLACKNESS" (0) */
        /* 0xAA = "NOP" (dest) */
        /* 0xCC = "SRCCOPY" (src) */
        /* 0xFF = "WHITENESS" (1) */

    }

    /* Log warning if ROP3 opcode not supported */
    guac_client_log(client, GUAC_LOG_INFO, "guac_rdp_rop3_transfer_function: "
            "UNSUPPORTED opcode = 0x%02X", rop3);

    /* Default to BINARY_SRC */
    return GUAC_TRANSFER_BINARY_SRC;

}