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1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010 |
3 | * |
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4 | * This work is licensed under the terms of any of these licenses |
5 | * (at your option): |
6 | * - GNU GPL, version 2 or later. |
7 | * - GNU LGPL, version 2.1 or later. |
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8 | * See the COPYING file in the top-level directory. |
9 | */ |
10 | |
11 | .text |
12 | .align 2 |
13 | |
14 | .global bgr555_to_rgb565 |
15 | bgr555_to_rgb565: |
16 | mov r3, #0x03e0 |
17 | vdup.16 q15, r3 |
18 | mov r2, r2, lsr #6 |
19 | 0: |
20 | vldmia r1!, {q0-q3} |
21 | vshr.u16 q4, q0, #10 |
22 | vshr.u16 q5, q1, #10 |
23 | vshr.u16 q6, q2, #10 |
24 | vshr.u16 q7, q3, #10 |
25 | vshl.u16 q8, q0, #11 |
26 | vshl.u16 q9, q1, #11 |
27 | vshl.u16 q10, q2, #11 |
28 | vshl.u16 q11, q3, #11 |
29 | vand q0, q0, q15 |
30 | vand q1, q1, q15 |
31 | vand q2, q2, q15 |
32 | vand q3, q3, q15 |
33 | vshl.u16 q0, q0, #1 |
34 | vshl.u16 q1, q1, #1 |
35 | vshl.u16 q2, q2, #1 |
36 | vshl.u16 q3, q3, #1 |
37 | vorr q0, q0, q4 |
38 | vorr q1, q1, q5 |
39 | vorr q2, q2, q6 |
40 | vorr q3, q3, q7 |
41 | vorr q0, q0, q8 |
42 | vorr q1, q1, q9 |
43 | vorr q2, q2, q10 |
44 | vorr q3, q3, q11 |
45 | vstmia r0!, {q0-q3} |
46 | subs r2, r2, #1 |
47 | bne 0b |
48 | |
49 | bx lr |
50 | |
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51 | |
52 | .global bgr888_to_rgb888 |
53 | bgr888_to_rgb888: |
54 | @ r2 /= 48 |
55 | mov r2, r2, lsr #4 |
56 | movw r3, #0x5556 |
57 | movt r3, #0x5555 |
58 | umull r12,r2, r3, r2 |
59 | 0: |
60 | vld3.8 {d0-d2}, [r1, :64]! |
61 | vld3.8 {d3-d5}, [r1, :64]! |
62 | vswp d0, d2 |
63 | vswp d3, d5 |
64 | vst3.8 {d0-d2}, [r0, :64]! |
65 | vst3.8 {d3-d5}, [r0, :64]! |
66 | subs r2, r2, #1 |
67 | bne 0b |
68 | |
69 | bx lr |
70 | |
71 | |
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72 | @ vim:filetype=armasm |