25  * bit. the result is a 7-bit encoded sample.
36  * 6(0) 7(6) 7(5) 7(4) 7(3) 7(2) 7(1) 7(0)
44  * the result will be converted into 9 bytes. the bit 7 is used for
48  * 1    0(7) 0(6) 0(5) 0(4) 0(3) 0(2) 0(1)
49  * 0    0(0) 1(7) 1(6) 1(5) 1(4) 1(3) 1(2)
50  * 0    1(1) 1(0) 2(7) 2(6) 2(5) 2(4) 2(3)
51  * 0    2(2) 2(1) 2(0) 3(7) 3(6) 3(5) 3(4)
52  * 0    3(3) 3(2) 3(1) 3(0) 4(7) 4(6) 4(5)
53  * CS   4(4) 4(3) 4(2) 4(1) 4(0) 5(7) 5(6)
54  * CS   5(5) 5(4) 5(3) 5(2) 5(1) 5(0) 6(7)
56  * 7(0) 7(6) 7(5) 7(4) 7(3) 7(2) 7(1) 7(0)
61  * byte (bit 7) to a shift register. if the rigister has the first five bits
386 		yl = (yl << 7) | dsp_audio_law2seven[bf_data_in[1]];  in dsp_bf_encrypt()
387 		yl = (yl << 7) | dsp_audio_law2seven[bf_data_in[2]];  in dsp_bf_encrypt()
388 		yl = (yl << 7) | dsp_audio_law2seven[bf_data_in[3]];  in dsp_bf_encrypt()
392 		yr = (yr << 7) | dsp_audio_law2seven[bf_data_in[5]];  in dsp_bf_encrypt()
393 		yr = (yr << 7) | dsp_audio_law2seven[bf_data_in[6]];  in dsp_bf_encrypt()
394 		yr = (yr << 7) | dsp_audio_law2seven[bf_data_in[7]];  in dsp_bf_encrypt()
395 		yr = (yr << 7) | dsp_audio_law2seven[bf_data_in[8]];  in dsp_bf_encrypt()
408 		EROUND(yl, yr, 7);  in dsp_bf_encrypt()
423 			^ (yr << 2) ^ (yr >> 1) ^ (yr >> 4) ^ (yr >> 7) ^ (yr >> 10)  in dsp_bf_encrypt()
438 		bf_crypt_out[7] = ((yr >> 8) & 0x7f) | (cs << 7);  in dsp_bf_encrypt()
472 		sync = (sync << 1) | ((*data) >> 7);  in dsp_bf_decrypt()
484 		yl = (yl << 7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */  in dsp_bf_decrypt()
485 		yl = (yl << 7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */  in dsp_bf_decrypt()
486 		yl = (yl << 7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */  in dsp_bf_decrypt()
491 		yr = (yr << 7) | (cs2 & 0x7f);  in dsp_bf_decrypt()
493 		yr = (yr << 7) | (cs1 & 0x7f);  in dsp_bf_decrypt()
495 		yr = (yr << 7) | (cs0 & 0x7f);  in dsp_bf_decrypt()
501 			^ (yr << 2) ^ (yr >> 1) ^ (yr >> 4) ^ (yr >> 7) ^ (yr >> 10)  in dsp_bf_decrypt()
506 		if ((cs & 0x7) != (((cs2 >> 5) & 4) | ((cs1 >> 6) & 2) | (cs0 >> 7))) {  in dsp_bf_decrypt()
525 		DROUND(yl, yr, 7);  in dsp_bf_decrypt()
544 		bf_data_out[7] = dsp_audio_seven2law[(yr >> 8) & 0x7f];  in dsp_bf_decrypt()
570 	EROUND(yl, yr, 7);  in encrypt_block()