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| 1 : | edgomez | 851 | |
| 2 : | ;------------------------------------------------------------------------------ | ||
| 3 : | ; | ||
| 4 : | ; MAKE_COLORSPACE(NAME,STACK, BYTES,PIXELS,ROWS, FUNC, ARG1) | ||
| 5 : | ; | ||
| 6 : | ; This macro provides a assembler width/height scroll loop | ||
| 7 : | ; NAME function name | ||
| 8 : | ; STACK additional stack bytes required by FUNC | ||
| 9 : | ; BYTES bytes-per-pixel for the given colorspace | ||
| 10 : | ; PIXELS pixels (columns) operated on per FUNC call | ||
| 11 : | ; VPIXELS vpixels (rows) operated on per FUNC call | ||
| 12 : | ; FUNC conversion macro name; we expect to find FUNC_INIT and FUNC macros | ||
| 13 : | ; ARG1 argument passed to FUNC | ||
| 14 : | ; | ||
| 15 : | ; throughout the FUNC the registers mean: | ||
| 16 : | ; eax y_stride | ||
| 17 : | ; ebx u_ptr | ||
| 18 : | ; ecx v_ptr | ||
| 19 : | ; edx x_stride | ||
| 20 : | ; esi y_ptr | ||
| 21 : | ; edi x_ptr | ||
| 22 : | ; ebp width | ||
| 23 : | ; | ||
| 24 : | ;------------------------------------------------------------------------------ | ||
| 25 : | %macro MAKE_COLORSPACE 8 | ||
| 26 : | %define NAME %1 | ||
| 27 : | %define STACK %2 | ||
| 28 : | %define BYTES %3 | ||
| 29 : | %define PIXELS %4 | ||
| 30 : | %define VPIXELS %5 | ||
| 31 : | %define FUNC %6 | ||
| 32 : | %define ARG1 %7 | ||
| 33 : | %define ARG2 %8 | ||
| 34 : | ; --- define function global/symbol | ||
| 35 : | align 16 | ||
| 36 : | cglobal NAME | ||
| 37 : | NAME | ||
| 38 : | ; --- init stack --- | ||
| 39 : | |||
| 40 : | %define pushsize 16 | ||
| 41 : | %define localsize 20 + STACK | ||
| 42 : | |||
| 43 : | %define vflip esp + localsize + pushsize + 40 | ||
| 44 : | %define height esp + localsize + pushsize + 36 | ||
| 45 : | %define width esp + localsize + pushsize + 32 | ||
| 46 : | %define uv_stride esp + localsize + pushsize + 28 | ||
| 47 : | %define y_stride esp + localsize + pushsize + 24 | ||
| 48 : | %define v_ptr esp + localsize + pushsize + 20 | ||
| 49 : | %define u_ptr esp + localsize + pushsize + 16 | ||
| 50 : | %define y_ptr esp + localsize + pushsize + 12 | ||
| 51 : | %define x_stride esp + localsize + pushsize + 8 | ||
| 52 : | %define x_ptr esp + localsize + pushsize + 4 | ||
| 53 : | %define _ip esp + localsize + pushsize + 0 | ||
| 54 : | |||
| 55 : | push ebx ; esp + localsize + 16 | ||
| 56 : | push esi ; esp + localsize + 8 | ||
| 57 : | push edi ; esp + localsize + 4 | ||
| 58 : | push ebp ; esp + localsize + 0 | ||
| 59 : | |||
| 60 : | %define x_dif esp + localsize - 4 | ||
| 61 : | %define y_dif esp + localsize - 8 | ||
| 62 : | %define uv_dif esp + localsize - 12 | ||
| 63 : | %define fixed_width esp + localsize - 16 | ||
| 64 : | %define tmp_height esp + localsize - 20 | ||
| 65 : | |||
| 66 : | sub esp, localsize | ||
| 67 : | |||
| 68 : | ; --- init varibles --- | ||
| 69 : | |||
| 70 : | mov eax, [width] ; fixed width | ||
| 71 : | add eax, 15 ; | ||
| 72 : | and eax, ~15 ; | ||
| 73 : | mov [fixed_width],eax ; | ||
| 74 : | |||
| 75 : | mov ebx, [x_stride] ; | ||
| 76 : | %rep BYTES | ||
| 77 : | sub ebx, eax ; | ||
| 78 : | %endrep | ||
| 79 : | mov [x_dif], ebx ; x_dif = x_stride - BYTES*fixed_width | ||
| 80 : | |||
| 81 : | mov ebx, [y_stride] ; | ||
| 82 : | sub ebx, eax ; | ||
| 83 : | mov [y_dif], ebx ; y_dif = y_stride - fixed_width | ||
| 84 : | |||
| 85 : | mov ebx, [uv_stride] ; | ||
| 86 : | mov ecx, eax ; | ||
| 87 : | shr ecx, 1 ; | ||
| 88 : | sub ebx, ecx ; | ||
| 89 : | mov [uv_dif], ebx ; uv_dif = uv_stride - fixed_width/2 | ||
| 90 : | |||
| 91 : | mov esi, [y_ptr] ; $esi$ = y_ptr | ||
| 92 : | mov edi, [x_ptr] ; $edi$ = x_ptr | ||
| 93 : | mov edx, [x_stride] ; $edx$ = x_stride | ||
| 94 : | mov ebp, [height] ; $ebp$ = height | ||
| 95 : | |||
| 96 : | |||
| 97 : | mov ebx, [vflip] | ||
| 98 : | or ebx, ebx | ||
| 99 : | jz .dont_flip | ||
| 100 : | |||
| 101 : | ; --- do flipping --- | ||
| 102 : | |||
| 103 : | xor ebx,ebx | ||
| 104 : | %rep BYTES | ||
| 105 : | sub ebx, eax | ||
| 106 : | %endrep | ||
| 107 : | sub ebx, edx | ||
| 108 : | mov [x_dif], ebx ; x_dif = -BYTES*fixed_width - x_stride | ||
| 109 : | |||
| 110 : | mov eax, ebp | ||
| 111 : | sub eax, 1 | ||
| 112 : | push edx | ||
| 113 : | mul edx | ||
| 114 : | pop edx | ||
| 115 : | add edi, eax ; $edi$ += (height-1) * x_stride | ||
| 116 : | |||
| 117 : | neg edx ; x_stride = -x_stride | ||
| 118 : | |||
| 119 : | .dont_flip | ||
| 120 : | |||
| 121 : | ; --- begin loop --- | ||
| 122 : | |||
| 123 : | mov eax, [y_stride] ; $eax$ = y_stride | ||
| 124 : | mov ebx, [u_ptr] ; $ebx$ = u_ptr | ||
| 125 : | mov ecx, [v_ptr] ; $ecx$ = v_ptr | ||
| 126 : | |||
| 127 : | FUNC %+ _INIT ARG1, ARG2 ; call FUNC_INIT | ||
| 128 : | |||
| 129 : | .y_loop | ||
| 130 : | mov [tmp_height], ebp | ||
| 131 : | mov ebp, [fixed_width] | ||
| 132 : | |||
| 133 : | .x_loop | ||
| 134 : | FUNC ARG1, ARG2 ; call FUNC | ||
| 135 : | |||
| 136 : | add edi, BYTES*PIXELS ; x_ptr += BYTES*PIXELS | ||
| 137 : | add esi, PIXELS ; y_ptr += PIXELS | ||
| 138 : | add ebx, PIXELS/2 ; u_ptr += PIXELS/2 | ||
| 139 : | add ecx, PIXELS/2 ; v_ptr += PIXELS/2 | ||
| 140 : | |||
| 141 : | sub ebp, PIXELS ; $ebp$ -= PIXELS | ||
| 142 : | jg .x_loop ; if ($ebp$ > 0) goto .x_loop | ||
| 143 : | |||
| 144 : | mov ebp, [tmp_height] | ||
| 145 : | add edi, [x_dif] ; x_ptr += x_dif + (VPIXELS-1)*x_stride | ||
| 146 : | add esi, [y_dif] ; y_ptr += y_dif + (VPIXELS-1)*y_stride | ||
| 147 : | %rep VPIXELS-1 | ||
| 148 : | add edi, edx | ||
| 149 : | add esi, eax | ||
| 150 : | %endrep | ||
| 151 : | |||
| 152 : | add ebx, [uv_dif] ; u_ptr += uv_dif + ((VPIXELS/2)-1)*uv_stride | ||
| 153 : | add ecx, [uv_dif] ; v_ptr += uv_dif + ((VPIXELS/2)-1)*uv_stride | ||
| 154 : | %rep (VPIXELS/2)-1 | ||
| 155 : | add ebx, [uv_stride] | ||
| 156 : | add ecx, [uv_stride] | ||
| 157 : | %endrep | ||
| 158 : | |||
| 159 : | sub ebp, VPIXELS ; $ebp$ -= VPIXELS | ||
| 160 : | jg .y_loop ; if ($ebp$ > 0) goto .y_loop | ||
| 161 : | |||
| 162 : | ; cleanup stack & undef everything | ||
| 163 : | |||
| 164 : | add esp, localsize | ||
| 165 : | pop ebp | ||
| 166 : | pop edi | ||
| 167 : | pop esi | ||
| 168 : | pop ebx | ||
| 169 : | |||
| 170 : | %undef vflip | ||
| 171 : | %undef height | ||
| 172 : | %undef width | ||
| 173 : | %undef uv_stride | ||
| 174 : | %undef y_stride | ||
| 175 : | %undef v_ptr | ||
| 176 : | %undef u_ptr | ||
| 177 : | %undef y_ptr | ||
| 178 : | %undef x_stride | ||
| 179 : | %undef x_ptr | ||
| 180 : | %undef _ip | ||
| 181 : | %undef x_dif | ||
| 182 : | %undef y_dif | ||
| 183 : | %undef uv_dif | ||
| 184 : | %undef fixed_width | ||
| 185 : | %undef tmp_height | ||
| 186 : | ret | ||
| 187 : | %undef NAME | ||
| 188 : | %undef STACK | ||
| 189 : | %undef BYTES | ||
| 190 : | %undef PIXELS | ||
| 191 : | %undef VPIXELS | ||
| 192 : | %undef FUNC | ||
| 193 : | %undef ARG1 | ||
| 194 : | %endmacro | ||
| 195 : | ;------------------------------------------------------------------------------ |
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