FreeCalypso > hg > tcs211-l1-reconst
comparison chipsetsw/drivers/drv_app/r2d/r2d_geometry.s @ 0:509db1a7b7b8
initial import: leo2moko-r1
author | Space Falcon <falcon@ivan.Harhan.ORG> |
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date | Mon, 01 Jun 2015 03:24:05 +0000 |
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-1:000000000000 | 0:509db1a7b7b8 |
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1 | |
2 | |
3 .state32 | |
4 | |
5 .if (R2D_ASM = 1) | |
6 | |
7 .include "r2d_asm_utils.inc" | |
8 .include "r2d_asm_configs.inc" | |
9 | |
10 | |
11 ; Main asm code (it is reflecting the C code of | |
12 ; r2d_blit_lcd_to_lcd) | |
13 | |
14 .text | |
15 | |
16 | |
17 | |
18 .global _r2d_blit_lb,_r2d_blit_la | |
19 .global _r2d_sb_down1,_r2d_sb_down2,_r2d_sa_up1,_r2d_sa_up2 | |
20 .global _r2d_scb_down1,_r2d_scb_down2,_r2d_sca_up1,_r2d_sca_up2 | |
21 .global _r2d_sdb_down1,_r2d_sdb_down2,_r2d_sda_up1,_r2d_sda_up2 | |
22 .global _r2d_skip_color_proc_a | |
23 .global _r2d_end_ynb_color_dst_a | |
24 .global _r2d_skip_color_proc_b | |
25 .global _r2d_end_ynb_color_dst_b | |
26 .global _r2d_skip_color_dst_a | |
27 .global _r2d_skip_color_dst_b | |
28 | |
29 | |
30 .global _r2d_sconvcolb_down1,_r2d_econvcolb_down1 | |
31 .global _r2d_sconvcolb_down2,_r2d_econvcolb_down2 | |
32 .global _r2d_sconvcola_up1,_r2d_econvcola_up1 | |
33 .global _r2d_sconvcola_up2,_r2d_econvcola_up2 | |
34 | |
35 .global _r2d_swb_down1,_r2d_swb_down2,_r2d_swa_up1,_r2d_swa_up2 | |
36 | |
37 | |
38 ; Patch list for write_shift_pixel_down | |
39 .global _r2d_sft_dst_n_b_down1,_r2d_sft_dst_n_b_down2 | |
40 .global _r2d_sft_srcb__b_down1,_r2d_sft_srcb__b_down2 | |
41 .global _r2d_sft_dstc__b_down1,_r2d_sft_dstc__b_down2 | |
42 | |
43 .global _r2d_sft_src_c_b_down1,_r2d_sft_src_c_b_down2 | |
44 .global _r2d_sft_b_c_b_down1,_r2d_sft_b_c_b_down2 | |
45 .global _r2d_sft_dstb_c_b_down1,_r2d_sft_dstb_c_b_down2 | |
46 .global _r2d_sft_d_c_b_down1,_r2d_sft_d_c_b_down2 | |
47 .global _r2d_sft_dstc_c_b_down1,_r2d_sft_dstc_c_b_down2 | |
48 | |
49 ; Patch list for write_shift_pixel_up | |
50 .global _r2d_sft_dst_n_a_up1,_r2d_sft_dst_n_a_up2 | |
51 .global _r2d_sft_srcb__a_up1,_r2d_sft_srcb__a_up2 | |
52 .global _r2d_sft_dstc__a_up1,_r2d_sft_dstc__a_up2 | |
53 | |
54 .global _r2d_sft_src_c_a_up1,_r2d_sft_src_c_a_up2 | |
55 .global _r2d_sft_b_c_a_up1,_r2d_sft_b_c_a_up2 | |
56 | |
57 ; Patch list fro shift_pixel_down | |
58 .global _r2d_sft_dst_n_downa,_r2d_sft_dst_n_downb,_r2d_sft_dst_n_downc | |
59 .global _r2d_sft_srcb_n_downa,_r2d_sft_srcb_n_downb,_r2d_sft_srcb_n_downc | |
60 | |
61 .global _r2d_sft_src_c_downa,_r2d_sft_src_c_downb,_r2d_sft_src_c_downc | |
62 | |
63 ; Patch list fro shift_pixel_up | |
64 .global _r2d_sft_dst_n_upa,_r2d_sft_dst_n_upb,_r2d_sft_dst_n_upc | |
65 .global _r2d_sft_srcb_n_upa,_r2d_sft_srcb_n_upb,_r2d_sft_srcb_n_upc | |
66 | |
67 .global _r2d_sft_src_c_upa,_r2d_sft_src_c_upb,_r2d_sft_src_c_upc | |
68 .global _r2d_enda,_r2d_endb | |
69 | |
70 .global _r2d_skip_load_src_a_up1,_r2d_skip_load_src_a_up2; | |
71 .global _r2d_skip_load_src_b_down1,_r2d_skip_load_src_b_down2; | |
72 .global _r2d_skip_shift_down_downa,_r2d_skip_shift_down_downb,_r2d_skip_shift_down_downc; | |
73 .global _r2d_skip_shift_up_upa,_r2d_skip_shift_up_upb,_r2d_skip_shift_up_upc; | |
74 | |
75 .global _r2d_no_null_src_counter_a,_r2d_no_null_src_counter_b | |
76 .global _r2d_end_a_up2,_r2d_end_b_down2,_r2d_end_downa,_r2d_end_downb,_r2d_end_downc; | |
77 .global _r2d_end_upa,_r2d_end_upb,_r2d_end_upc; | |
78 | |
79 .global _r2d_always_read_a_up1,_r2d_always_read_a_up2 | |
80 .global _r2d_always_read_b_down1,_r2d_always_read_b_down2 | |
81 | |
82 .ref $r2d_blit_lcd_to_lcd | |
83 | |
84 .endif | |
85 | |
86 write_shift_pixel_down .macro label | |
87 ; Create free space for result | |
88 .if (R2D_PIXEL_DEPTH != 32) | |
89 _r2d_sft_dst_n_:label: MOV dstvalue,dstvalue, LSR #R2D_PIXEL_DEPTH | |
90 .else | |
91 _r2d_sft_dst_n_:label: MOV dstvalue,#0 | |
92 .endif | |
93 | |
94 ; Mask to extract pixel from src_current | |
95 _r2d_sft_src_c_:label: MOV calca,src_current,LSL #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
96 _r2d_always_read_:label: MOV src_current,src_current | |
97 _r2d_sft_b_c_:label: MOV calca,calca,LSR #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
98 | |
99 ; Mask to extract pixel from dst_current | |
100 _r2d_sft_dstb_c_:label: MOV calcb,dst_current,LSL #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
101 _r2d_sft_d_c_:label: MOV calcb,calcb,LSR #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
102 | |
103 ; Do foreground detection | |
104 _r2d_sd:label: | |
105 MOV calca,calca | |
106 MOV calca,calca | |
107 MOV calca,calca | |
108 _r2d_ed:label: | |
109 | |
110 ; Get foreground/background colors if needed | |
111 _r2d_sc:label: | |
112 MOV calca,calca | |
113 MOV calca,calca | |
114 MOV calca,calca | |
115 _r2d_ec:label: | |
116 | |
117 _r2d_sconvcol:label: | |
118 MOV calca,calca | |
119 MOV calca,calca | |
120 MOV calca,calca | |
121 _r2d_econvcol:label: | |
122 | |
123 ; Compute drawing mode | |
124 _r2d_s:label: | |
125 MOV calca,calca | |
126 MOV calcb,calca | |
127 MOV calcb,calcb | |
128 _r2d_e:label: | |
129 _r2d_sft_dstc_c_:label: ORR dstvalue,dstvalue,calcb, LSL #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
130 | |
131 _r2d_sw:label: | |
132 MOV dstvalue,dstvalue | |
133 _r2d_ew:label: | |
134 | |
135 ; Read new data if needed | |
136 .if (R2D_PIXEL_DEPTH != 32) | |
137 _r2d_sft_srcb__:label: MOV src_current,src_current, LSR #R2D_PIXEL_DEPTH | |
138 _r2d_sft_dstc__:label: MOV dst_current,dst_current, LSR #R2D_PIXEL_DEPTH | |
139 .else | |
140 _r2d_sft_srcb__:label: MOV src_current,src_current,LSR #0 | |
141 _r2d_sft_dstc__:label: MOV dst_current,dst_current,LSR #0 | |
142 .endif | |
143 | |
144 SUBS dstcounter,dstcounter,#1 | |
145 MOVEQ dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
146 _r2d_skip_load_src_:label: MOV src_current,src_current | |
147 SUBS srccounter,srccounter,#1 | |
148 BNE M1END? | |
149 MOV srccounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
150 LDR src_current,[p_src_current,#4]! | |
151 M1END? | |
152 .endm | |
153 | |
154 write_shift_pixel_up .macro label | |
155 .if (R2D_PIXEL_DEPTH != 32) | |
156 _r2d_sft_dst_n_:label: MOV dstvalue,dstvalue, LSL #R2D_PIXEL_DEPTH | |
157 .else | |
158 _r2d_sft_dst_n_:label: MOV dstvalue,#0 | |
159 .endif | |
160 | |
161 _r2d_sft_src_c_:label: MOV calca,src_current,LSR #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
162 _r2d_always_read_:label: MOV src_current,src_current | |
163 _r2d_sft_b_c_:label: MOV calcb,dst_current,LSR #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
164 | |
165 ; Do foreground detection | |
166 _r2d_sd:label: | |
167 MOV calca,calca | |
168 MOV calca,calca | |
169 MOV calca,calca | |
170 _r2d_ed:label: | |
171 | |
172 ; Get foreground/background colors if needed | |
173 _r2d_sc:label: | |
174 MOV calca,calca | |
175 MOV calca,calca | |
176 MOV calca,calca | |
177 _r2d_ec:label: | |
178 | |
179 _r2d_sconvcol:label: | |
180 MOV calca,calca | |
181 MOV calca,calca | |
182 MOV calca,calca | |
183 _r2d_econvcol:label: | |
184 | |
185 ; Compute drawing mode | |
186 _r2d_s:label: | |
187 MOV calca,calca | |
188 MOV calcb,calca | |
189 MOV calcb,calcb | |
190 _r2d_e:label: | |
191 ORR dstvalue,dstvalue,calcb | |
192 | |
193 _r2d_sw:label: | |
194 MOV dstvalue,dstvalue | |
195 _r2d_ew:label: | |
196 | |
197 .if (R2D_PIXEL_DEPTH != 32) | |
198 _r2d_sft_srcb__:label: MOV src_current,src_current, LSL #R2D_PIXEL_DEPTH | |
199 _r2d_sft_dstc__:label: MOV dst_current,dst_current, LSL #R2D_PIXEL_DEPTH | |
200 .else | |
201 _r2d_sft_srcb__:label: MOV src_current,src_current,LSL #0 | |
202 _r2d_sft_dstc__:label: MOV dst_current,dst_current,LSL #0 | |
203 .endif | |
204 | |
205 SUBS dstcounter,dstcounter,#1 | |
206 MOVEQ dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
207 _r2d_skip_load_src_:label: MOV src_current,src_current | |
208 SUBS srccounter,srccounter,#1 | |
209 BNE M1END? | |
210 MOV srccounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
211 LDR src_current,[p_src_current,#-4]! | |
212 M1END? | |
213 .endm | |
214 | |
215 shift_pixel_down .macro arg,reg,label | |
216 _r2d_skip_shift_down_:label: MOV arg,arg | |
217 | |
218 .if (R2D_PIXEL_DEPTH != 32) | |
219 _r2d_sft_dst_n_:label: MOV arg,arg, LSR #R2D_PIXEL_DEPTH | |
220 .else | |
221 _r2d_sft_dst_n_:label: MOV arg,#0 | |
222 .endif | |
223 | |
224 _r2d_sft_src_c_:label: ORR arg,arg,:reg:_current, LSL #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
225 | |
226 .if (R2D_PIXEL_DEPTH != 32) | |
227 _r2d_sft_srcb_n_:label: MOV :reg:_current,:reg:_current, LSR #R2D_PIXEL_DEPTH | |
228 .else | |
229 _r2d_sft_srcb_n_:label: MOV :reg:_current,#0 | |
230 .endif | |
231 | |
232 SUBS :reg:counter,:reg:counter,#1 | |
233 BNE M1END? | |
234 MOV :reg:counter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
235 LDR :reg:_current,[p_:reg:_current,#4]! | |
236 M1END? | |
237 .endm | |
238 | |
239 shift_pixel_up .macro arg,reg,label | |
240 _r2d_skip_shift_up_:label: MOV arg,arg | |
241 .if (R2D_PIXEL_DEPTH != 32) | |
242 _r2d_sft_dst_n_:label: MOV arg,arg, LSL #R2D_PIXEL_DEPTH | |
243 .else | |
244 _r2d_sft_dst_n_:label: MOV arg,#0 | |
245 .endif | |
246 | |
247 _r2d_sft_src_c_:label: ORR arg,arg,:reg:_current, LSR #((1<<R2D_MEMORY_WORD) - R2D_PIXEL_DEPTH) | |
248 | |
249 .if (R2D_PIXEL_DEPTH != 32) | |
250 _r2d_sft_srcb_n_:label: MOV :reg:_current,:reg:_current, LSL #R2D_PIXEL_DEPTH | |
251 .else | |
252 _r2d_sft_srcb_n_:label: MOV :reg:_current,#0 | |
253 .endif | |
254 | |
255 | |
256 SUBS :reg:counter,:reg:counter,#1 | |
257 BNE M1END? | |
258 MOV :reg:counter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
259 LDR :reg:_current,[p_:reg:_current,#-4]! | |
260 M1END? | |
261 .endm | |
262 | |
263 .if (R2D_ASM = 1) | |
264 | |
265 ;-------------------------------------- | |
266 ; | |
267 ; v_direction == -1 | |
268 ; | |
269 | |
270 _r2d_blit_la | |
271 STMFD SP!, {R4,R5,R6,R7,R8,R9,R10,R11,R12,LR} | |
272 LDR dstvalue, [R0,#S_FRAME.dstvalue_ind] | |
273 LDR dst_current, [R0,#S_FRAME.dst_current_ind] | |
274 LDRH dstcounter, [R0,#S_FRAME.dstcounter_ind] | |
275 LDR src_current, [R0,#S_FRAME.src_current_ind] | |
276 LDRH ynb, [R0,#S_FRAME.ynb_ind] | |
277 LDR p_src_current, [R0,#S_FRAME.p_src_current_ind] | |
278 LDR p_dst_current, [R0,#S_FRAME.p_dst_current_ind] | |
279 LDR x, [R0,#S_FRAME.x_ind] | |
280 LDR y, [R0,#S_FRAME.y_ind] | |
281 LDRH current_dst_dy, [R0,#S_FRAME.current_dst_dy_ind] | |
282 LDRH current_src_dy, [R0,#S_FRAME.current_src_dy_ind] | |
283 LDRH dst_dy, [R0,#S_FRAME.dst_dy_ind] | |
284 | |
285 | |
286 ;------------------------------------- | |
287 ; | |
288 ; First while | |
289 ; | |
290 ; current_dst_dy != dst_dy | |
291 current_dst_a: CMP current_dst_dy,dst_dy | |
292 BEQ end_current_dst_a | |
293 | |
294 shift_pixel_up dstvalue,dst,upa | |
295 | |
296 _r2d_end_upa: SUB current_dst_dy,current_dst_dy,#1 | |
297 SUB y,y,#1 | |
298 B current_dst_a | |
299 | |
300 end_current_dst_a: | |
301 | |
302 ; Load srcounter(and overwrite dst_dy) | |
303 LDRH srccounter, [R0,#S_FRAME.srccounter_ind] | |
304 | |
305 LDRH temp,[R0,#S_FRAME.src_dy_ind] | |
306 SUB current_src_dy,current_src_dy,temp | |
307 | |
308 ;------------------------------------- | |
309 ; | |
310 ; Second while | |
311 ; | |
312 ; current_src_dy - src_dy != 0 | |
313 current_src_a: CMP current_src_dy,#0 | |
314 BEQ end_current_src_a | |
315 | |
316 shift_pixel_up temp,src,upb | |
317 | |
318 _r2d_end_upb: SUB current_src_dy,current_src_dy,#1 | |
319 B current_src_a | |
320 | |
321 end_current_src_a: | |
322 | |
323 ;------------------------------------- | |
324 ; | |
325 ; Third while | |
326 ; | |
327 ; (ynb!=0) | |
328 _r2d_ynb_loop_a: TEQ ynb,#0 | |
329 BEQ end_ynb_loop_a | |
330 | |
331 write_shift_pixel_up a_up1 ; was a_up1 | |
332 | |
333 _r2d_no_null_src_counter_a: | |
334 SUB y,y,#1 | |
335 | |
336 ; When dst is color framebuffer, following instruction is replaced by | |
337 ; BL no_end_dst_counter_a so, to ynb_loop_a | |
338 _r2d_skip_color_proc_a: MOV y,y | |
339 | |
340 CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
341 BNE no_end_dst_counter_a | |
342 | |
343 SUB ynb,ynb,#1 | |
344 STR dstvalue,[p_dst_current],#-4 | |
345 | |
346 LDR dst_current,[p_dst_current] | |
347 MOV dstvalue,#0 | |
348 MOV current_dst_dy,#((1<<R2D_PIXELS_PER_MEMORY_WORD)-1) | |
349 | |
350 no_end_dst_counter_a: B _r2d_ynb_loop_a | |
351 _r2d_end_ynb_color_dst_a:SUB ynb,ynb,#1 | |
352 B _r2d_ynb_loop_a | |
353 | |
354 end_ynb_loop_a: | |
355 _r2d_skip_color_dst_a: MOV y,y | |
356 | |
357 ADD current_dst_dy,current_dst_dy,#1 | |
358 LDRH temp,[R0,#S_FRAME.end_dst_dy_ind] | |
359 SUB current_dst_dy,current_dst_dy,temp | |
360 | |
361 ;------------------------------------- | |
362 ; | |
363 ; Fourth while | |
364 ; | |
365 ; current_dst_dy - end_dst_dy != 0 | |
366 end_dst_loop_a: TEQ current_dst_dy,#0 | |
367 BEQ end_end_dst_loop_a | |
368 | |
369 write_shift_pixel_up a_up2 | |
370 | |
371 _r2d_end_a_up2: SUB current_dst_dy,current_dst_dy,#1 | |
372 SUB y,y,#1 | |
373 B end_dst_loop_a | |
374 end_end_dst_loop_a: | |
375 MOV temp,#0 | |
376 CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
377 MOVEQ temp,#1 | |
378 | |
379 ;------------------------------------- | |
380 ; | |
381 ; Last while | |
382 ; | |
383 ; dstcounter != (1<<R2D_PIXELS_PER_MEMORY_WORD) | |
384 dst_counter_loop_a: CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
385 BEQ end_dst_counter_loop_a | |
386 shift_pixel_up dstvalue,dst,upc | |
387 _r2d_end_upc: SUB y,y,#1 | |
388 B dst_counter_loop_a | |
389 end_dst_counter_loop_a: | |
390 CMP temp,#0 | |
391 STREQ dstvalue,[p_dst_current,#4]! | |
392 | |
393 CMP temp,#0 | |
394 STRNE dstvalue,[p_dst_current] | |
395 _r2d_enda: | |
396 LDMFD SP!, {R4,R5,R6,R7,R8,R9,R10,R11,R12,LR} | |
397 MOV PC,LR | |
398 | |
399 | |
400 ;-------------------------------------- | |
401 ; | |
402 ; v_direction != -1 | |
403 ; | |
404 _r2d_blit_lb | |
405 STMFD SP!, {R4,R5,R6,R7,R8,R9,R10,R11,R12,LR} | |
406 LDR dstvalue, [R0,#S_FRAME.dstvalue_ind] | |
407 LDR dst_current, [R0,#S_FRAME.dst_current_ind] | |
408 LDRH dstcounter, [R0,#S_FRAME.dstcounter_ind] | |
409 LDR src_current, [R0,#S_FRAME.src_current_ind] | |
410 LDRH ynb, [R0,#S_FRAME.ynb_ind] | |
411 LDR p_src_current, [R0,#S_FRAME.p_src_current_ind] | |
412 LDR p_dst_current, [R0,#S_FRAME.p_dst_current_ind] | |
413 LDR x, [R0,#S_FRAME.x_ind] | |
414 LDR y, [R0,#S_FRAME.y_ind] | |
415 LDRH current_dst_dy, [R0,#S_FRAME.current_dst_dy_ind] | |
416 LDRH current_src_dy, [R0,#S_FRAME.current_src_dy_ind] | |
417 LDRH dst_dy, [R0,#S_FRAME.dst_dy_ind] | |
418 | |
419 | |
420 ;------------------------------------- | |
421 ; | |
422 ; First while | |
423 ; | |
424 ; current_dst_dy != dst_dy | |
425 current_dst_b: CMP current_dst_dy,dst_dy | |
426 BEQ end_current_dst_b | |
427 | |
428 shift_pixel_down dstvalue,dst,downa | |
429 | |
430 _r2d_end_downa: ADD current_dst_dy,current_dst_dy,#1 | |
431 ADD y,y,#1 | |
432 B current_dst_b | |
433 | |
434 end_current_dst_b: | |
435 | |
436 ; Load srcounter(and overwrite dst_dy) | |
437 LDRH srccounter, [R0,#S_FRAME.srccounter_ind] | |
438 | |
439 LDRH temp,[R0,#S_FRAME.src_dy_ind] | |
440 SUB current_src_dy,current_src_dy,temp | |
441 | |
442 ;------------------------------------- | |
443 ; | |
444 ; Second while | |
445 ; | |
446 ; current_src_dy - src_dy != 0 | |
447 current_src_b: CMP current_src_dy,#0 | |
448 BEQ end_current_src_b | |
449 | |
450 shift_pixel_down temp,src,downb | |
451 | |
452 _r2d_end_downb: ADD current_src_dy,current_src_dy,#1 | |
453 B current_src_b | |
454 | |
455 end_current_src_b: | |
456 | |
457 ;------------------------------------- | |
458 ; | |
459 ; Third while | |
460 ; | |
461 ; (ynb!=0) | |
462 _r2d_ynb_loop_b: TEQ ynb,#0 | |
463 BEQ end_ynb_loop_b | |
464 | |
465 write_shift_pixel_down b_down1 | |
466 | |
467 _r2d_no_null_src_counter_b: | |
468 ADD y,y,#1 | |
469 | |
470 ; When dst is color framebuffer, following instruction is replaced by | |
471 ; BL no_end_dst_counter_a so, to ynb_loop_a | |
472 _r2d_skip_color_proc_b: MOV y,y | |
473 | |
474 CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
475 BNE no_end_dst_counter_b | |
476 | |
477 SUB ynb,ynb,#1 | |
478 STR dstvalue,[p_dst_current],#4 | |
479 | |
480 LDR dst_current,[p_dst_current] | |
481 MOV dstvalue,#0 | |
482 MOV current_dst_dy,#0 | |
483 | |
484 no_end_dst_counter_b: B _r2d_ynb_loop_b | |
485 _r2d_end_ynb_color_dst_b: SUB ynb,ynb,#1 | |
486 B _r2d_ynb_loop_b | |
487 end_ynb_loop_b: | |
488 _r2d_skip_color_dst_b: MOV y,y | |
489 | |
490 SUB current_dst_dy,current_dst_dy,#1 | |
491 LDRH temp,[R0,#S_FRAME.end_dst_dy_ind] | |
492 SUB current_dst_dy,current_dst_dy,temp | |
493 | |
494 ;------------------------------------- | |
495 ; | |
496 ; Fourth while | |
497 ; | |
498 ; current_dst_dy - end_dst_dy != 0 | |
499 end_dst_loop_b: TEQ current_dst_dy,#0 | |
500 BEQ end_end_dst_loop_b | |
501 | |
502 write_shift_pixel_down b_down2 | |
503 | |
504 _r2d_end_b_down2: ADD current_dst_dy,current_dst_dy,#1 | |
505 ADD y,y,#1 | |
506 B end_dst_loop_b | |
507 end_end_dst_loop_b: | |
508 MOV temp,#0 | |
509 CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
510 MOVEQ temp,#1 | |
511 | |
512 ;------------------------------------- | |
513 ; | |
514 ; Last while | |
515 ; | |
516 ; dstcounter != (1<<R2D_PIXELS_PER_MEMORY_WORD) | |
517 dst_counter_loop_b: CMP dstcounter,#(1<<R2D_PIXELS_PER_MEMORY_WORD) | |
518 BEQ end_dst_counter_loop_b | |
519 shift_pixel_down dstvalue,dst,downc | |
520 _r2d_end_downc: ADD y,y,#1 | |
521 B dst_counter_loop_b | |
522 end_dst_counter_loop_b: | |
523 CMP temp,#0 | |
524 STREQ dstvalue,[p_dst_current,#-4]! | |
525 | |
526 CMP temp,#0 | |
527 STRNE dstvalue,[p_dst_current] | |
528 _r2d_endb: | |
529 LDMFD SP!, {R4,R5,R6,R7,R8,R9,R10,R11,R12,LR} | |
530 MOV PC,LR | |
531 | |
532 .endif | |
533 | |
534 .end |