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1 /* | 1 /* |
2 * This file is part of FFmpeg. | 2 * This file is part of FFmpeg. |
3 * | 3 * |
4 * FFmpeg is free software; you can redistribute it and/or | 4 * FFmpeg is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Lesser General Public | 5 * modify it under the terms of the GNU Lesser General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2.1 of the License, or (at your option) any later version. | 7 * version 2.1 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * FFmpeg is distributed in the hope that it will be useful, | 9 * FFmpeg is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Lesser General Public License for more details. | 12 * Lesser General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Lesser General Public | 14 * You should have received a copy of the GNU Lesser General Public |
15 * License along with FFmpeg; if not, write to the Free Software | 15 * License along with FFmpeg; if not, write to the Free Software |
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 */ | 17 */ |
18 | 18 |
19 #ifndef AVUTIL_ARM_BSWAP_H | 19 #ifndef AVUTIL_ARM_BSWAP_H |
20 #define AVUTIL_ARM_BSWAP_H | 20 #define AVUTIL_ARM_BSWAP_H |
21 | 21 |
22 #include <stdint.h> | 22 #include <stdint.h> |
23 #include "config.h" | 23 #include "config.h" |
24 #include "libavutil/common.h" | 24 #include "libavutil/common.h" |
25 | 25 |
26 #ifdef __ARMCC_VERSION | 26 #ifdef __ARMCC_VERSION |
27 | 27 |
28 #if HAVE_ARMV6 | 28 #if HAVE_ARMV6 |
29 #define bswap_16 bswap_16 | 29 #define bswap_16 bswap_16 |
30 static av_always_inline av_const uint16_t bswap_16(uint16_t x) | 30 static av_always_inline av_const unsigned bswap_16(unsigned x) |
31 { | 31 { |
32 __asm { rev16 x, x } | 32 __asm { rev16 x, x } |
33 return x; | 33 return x; |
34 } | 34 } |
35 | 35 |
36 #define bswap_32 bswap_32 | 36 #define bswap_32 bswap_32 |
37 static av_always_inline av_const uint32_t bswap_32(uint32_t x) | 37 static av_always_inline av_const uint32_t bswap_32(uint32_t x) |
38 { | 38 { |
39 return __rev(x); | 39 return __rev(x); |
40 } | 40 } |
41 #endif /* HAVE_ARMV6 */ | 41 #endif /* HAVE_ARMV6 */ |
42 | 42 |
43 #elif HAVE_INLINE_ASM | 43 #elif HAVE_INLINE_ASM |
44 | 44 |
45 #if HAVE_ARMV6 | 45 #if HAVE_ARMV6 |
46 #define bswap_16 bswap_16 | 46 #define bswap_16 bswap_16 |
47 static av_always_inline av_const uint16_t bswap_16(uint16_t x) | 47 static av_always_inline av_const unsigned bswap_16(unsigned x) |
48 { | 48 { |
49 __asm__("rev16 %0, %0" : "+r"(x)); | 49 __asm__("rev16 %0, %0" : "+r"(x)); |
50 return x; | 50 return x; |
51 } | 51 } |
52 #endif | 52 #endif |
53 | 53 |
54 #define bswap_32 bswap_32 | 54 #define bswap_32 bswap_32 |
55 static av_always_inline av_const uint32_t bswap_32(uint32_t x) | 55 static av_always_inline av_const uint32_t bswap_32(uint32_t x) |
56 { | 56 { |
57 #if HAVE_ARMV6 | 57 #if HAVE_ARMV6 |
58 __asm__("rev %0, %0" : "+r"(x)); | 58 __asm__("rev %0, %0" : "+r"(x)); |
59 #else | 59 #else |
60 uint32_t t; | 60 uint32_t t; |
61 __asm__ ("eor %1, %0, %0, ror #16 \n\t" | 61 __asm__ ("eor %1, %0, %0, ror #16 \n\t" |
62 "bic %1, %1, #0xFF0000 \n\t" | 62 "bic %1, %1, #0xFF0000 \n\t" |
63 "mov %0, %0, ror #8 \n\t" | 63 "mov %0, %0, ror #8 \n\t" |
64 "eor %0, %0, %1, lsr #8 \n\t" | 64 "eor %0, %0, %1, lsr #8 \n\t" |
65 : "+r"(x), "=&r"(t)); | 65 : "+r"(x), "=&r"(t)); |
66 #endif /* HAVE_ARMV6 */ | 66 #endif /* HAVE_ARMV6 */ |
67 return x; | 67 return x; |
68 } | 68 } |
69 | 69 |
70 #endif /* __ARMCC_VERSION */ | 70 #endif /* __ARMCC_VERSION */ |
71 | 71 |
72 #endif /* AVUTIL_ARM_BSWAP_H */ | 72 #endif /* AVUTIL_ARM_BSWAP_H */ |
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