19 #ifndef AVCODEC_AARCH64_CABAC_H
20 #define AVCODEC_AARCH64_CABAC_H
29 #define get_cabac_inline get_cabac_inline_aarch64
34 void *reg_a, *reg_b, *reg_c, *
tmp;
37 "ldrb %w[bit] , [%[state]] \n\t"
38 "add %[r_b] , %[tables] , %[lps_off] \n\t"
39 "mov %w[tmp] , %w[range] \n\t"
40 "and %w[range] , %w[range] , #0xC0 \n\t"
41 "lsl %w[r_c] , %w[range] , #1 \n\t"
42 "add %[r_b] , %[r_b] , %w[bit], UXTW \n\t"
43 "ldrb %w[range] , [%[r_b], %w[r_c], SXTW] \n\t"
44 "sub %w[r_c] , %w[tmp] , %w[range] \n\t"
45 "lsl %w[tmp] , %w[r_c] , #17 \n\t"
46 "cmp %w[tmp] , %w[low] \n\t"
47 "csel %w[tmp] , %w[tmp] , wzr , cc \n\t"
48 "csel %w[range] , %w[r_c] , %w[range], gt \n\t"
49 "cinv %w[bit] , %w[bit] , cc \n\t"
50 "sub %w[low] , %w[low] , %w[tmp] \n\t"
51 "add %[r_b] , %[tables] , %[norm_off] \n\t"
52 "add %[r_a] , %[tables] , %[mlps_off] \n\t"
53 "ldrb %w[tmp] , [%[r_b], %w[range], SXTW] \n\t"
54 "ldrb %w[r_a] , [%[r_a], %w[bit], SXTW] \n\t"
55 "lsl %w[low] , %w[low] , %w[tmp] \n\t"
56 "lsl %w[range] , %w[range] , %w[tmp] \n\t"
57 "uxth %w[r_c] , %w[low] \n\t"
58 "strb %w[r_a] , [%[state]] \n\t"
59 "cbnz %w[r_c] , 2f \n\t"
60 "ldr %[r_c] , [%[c], %[byte]] \n\t"
61 "ldr %[r_a] , [%[c], %[end]] \n\t"
62 "ldrh %w[tmp] , [%[r_c]] \n\t"
63 "cmp %[r_c] , %[r_a] \n\t"
65 "add %[r_a] , %[r_c] , #2 \n\t"
66 "str %[r_a] , [%[c], %[byte]] \n\t"
68 "sub %w[r_c] , %w[low] , #1 \n\t"
69 "eor %w[r_c] , %w[r_c] , %w[low] \n\t"
70 "rev %w[tmp] , %w[tmp] \n\t"
71 "lsr %w[r_c] , %w[r_c] , #15 \n\t"
72 "lsr %w[tmp] , %w[tmp] , #15 \n\t"
73 "ldrb %w[r_c] , [%[r_b], %w[r_c], SXTW] \n\t"
74 "mov %w[r_b] , #0xFFFF \n\t"
75 "mov %w[r_a] , #7 \n\t"
76 "sub %w[tmp] , %w[tmp] , %w[r_b] \n\t"
77 "sub %w[r_c] , %w[r_a] , %w[r_c] \n\t"
78 "lsl %w[tmp] , %w[tmp] , %w[r_c] \n\t"
79 "add %w[low] , %w[low] , %w[tmp] \n\t"
83 [range]
"+&r"(
c->range),
__asm__(".macro parse_r var r\n\t" "\\var = -1\n\t" _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3) _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7) _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11) _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15) _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19) _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23) _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27) _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31) ".iflt \\var\n\t" ".error \"Unable to parse register name \\r\"\n\t" ".endif\n\t" ".endm")
Macro definitions for various function/variable attributes.
Context Adaptive Binary Arithmetic Coder.
#define H264_LPS_RANGE_OFFSET
#define H264_MLPS_STATE_OFFSET
#define H264_NORM_SHIFT_OFFSET
const uint8_t ff_h264_cabac_tables[512+4 *2 *64+4 *64+63]
#define bit(string, value)
common internal API header
static const uint8_t *const tables[]