diff options
Diffstat (limited to 'ffmpeg_files/arm')
-rw-r--r-- | ffmpeg_files/arm/bswap.h | 72 | ||||
-rw-r--r-- | ffmpeg_files/arm/intreadwrite.h | 78 |
2 files changed, 150 insertions, 0 deletions
diff --git a/ffmpeg_files/arm/bswap.h b/ffmpeg_files/arm/bswap.h new file mode 100644 index 0000000000..98147449b1 --- /dev/null +++ b/ffmpeg_files/arm/bswap.h @@ -0,0 +1,72 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef MP_AVUTIL_ARM_BSWAP_H +#define MP_AVUTIL_ARM_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#ifdef __ARMCC_VERSION + +#if HAVE_ARMV6 +#define bswap_16 bswap_16 +static av_always_inline av_const uint16_t bswap_16(uint16_t x) +{ + __asm { rev16 x, x } + return x; +} + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ + return __rev(x); +} +#endif /* HAVE_ARMV6 */ + +#elif HAVE_INLINE_ASM + +#if HAVE_ARMV6 +#define bswap_16 bswap_16 +static av_always_inline av_const uint16_t bswap_16(uint16_t x) +{ + __asm__("rev16 %0, %0" : "+r"(x)); + return x; +} +#endif + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ +#if HAVE_ARMV6 + __asm__("rev %0, %0" : "+r"(x)); +#else + uint32_t t; + __asm__ ("eor %1, %0, %0, ror #16 \n\t" + "bic %1, %1, #0xFF0000 \n\t" + "mov %0, %0, ror #8 \n\t" + "eor %0, %0, %1, lsr #8 \n\t" + : "+r"(x), "=&r"(t)); +#endif /* HAVE_ARMV6 */ + return x; +} + +#endif /* __ARMCC_VERSION */ + +#endif /* AVUTIL_ARM_BSWAP_H */ diff --git a/ffmpeg_files/arm/intreadwrite.h b/ffmpeg_files/arm/intreadwrite.h new file mode 100644 index 0000000000..34b5ec8e4a --- /dev/null +++ b/ffmpeg_files/arm/intreadwrite.h @@ -0,0 +1,78 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef MP_AVUTIL_ARM_INTREADWRITE_H +#define MP_AVUTIL_ARM_INTREADWRITE_H + +#include <stdint.h> +#include "config.h" + +#if HAVE_FAST_UNALIGNED && HAVE_INLINE_ASM + +#define AV_RN16 AV_RN16 +static inline uint16_t AV_RN16(const void *p) +{ + uint16_t v; + __asm__ ("ldrh %0, %1" : "=r"(v) : "m"(*(const uint16_t *)p)); + return v; +} + +#define AV_WN16 AV_WN16 +static inline void AV_WN16(void *p, uint16_t v) +{ + __asm__ ("strh %1, %0" : "=m"(*(uint16_t *)p) : "r"(v)); +} + +#define AV_RN32 AV_RN32 +static inline uint32_t AV_RN32(const void *p) +{ + uint32_t v; + __asm__ ("ldr %0, %1" : "=r"(v) : "m"(*(const uint32_t *)p)); + return v; +} + +#define AV_WN32 AV_WN32 +static inline void AV_WN32(void *p, uint32_t v) +{ + __asm__ ("str %1, %0" : "=m"(*(uint32_t *)p) : "r"(v)); +} + +#define AV_RN64 AV_RN64 +static inline uint64_t AV_RN64(const void *p) +{ + union { uint64_t v; uint32_t hl[2]; } v; + __asm__ ("ldr %0, %2 \n\t" + "ldr %1, %3 \n\t" + : "=r"(v.hl[0]), "=r"(v.hl[1]) + : "m"(*(const uint32_t*)p), "m"(*((const uint32_t*)p+1))); + return v.v; +} + +#define AV_WN64 AV_WN64 +static inline void AV_WN64(void *p, uint64_t v) +{ + union { uint64_t v; uint32_t hl[2]; } vv = { v }; + __asm__ ("str %2, %0 \n\t" + "str %3, %1 \n\t" + : "=m"(*(uint32_t*)p), "=m"(*((uint32_t*)p+1)) + : "r"(vv.hl[0]), "r"(vv.hl[1])); +} + +#endif /* HAVE_INLINE_ASM */ + +#endif /* AVUTIL_ARM_INTREADWRITE_H */ |