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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 14:01:29 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-10-24 14:01:36 +0200 |
| commit | 5555d2075a26fc778fb8145473100e94d80a00c8 (patch) | |
| tree | 95d4f5649f7c2410d814b18c7bbe868c82b83cbe /libavutil/intreadwrite.h | |
| parent | f3b8096bc0e7df9e45db1023d6e6e7bff177d0c4 (diff) | |
| parent | ceb754d041f5f6327fd9195a5f43575af9516daa (diff) | |
| download | ffmpeg-5555d2075a26fc778fb8145473100e94d80a00c8.tar.gz | |
Merge commit 'ceb754d041f5f6327fd9195a5f43575af9516daa'
* commit 'ceb754d041f5f6327fd9195a5f43575af9516daa':
lzo: Use AV_COPY*U macros where appropriate
prepare 9_beta2 release
dsputil: Replace AV_WNxx(AV_RNxx()) combinations by AV_COPYxxU
intreadwrite: Add AV_COPYxxU macros for copying to/from unaligned addresses
dxtory: Replace AV_WN16A(AV_RN16A()) combination by AV_COPY16
mp3: properly forward mp_decode_frame errors
Conflicts:
RELEASE
libavcodec/mpegaudiodec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/intreadwrite.h')
| -rw-r--r-- | libavutil/intreadwrite.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libavutil/intreadwrite.h b/libavutil/intreadwrite.h index 7c68ead92d..34e21d42fa 100644 --- a/libavutil/intreadwrite.h +++ b/libavutil/intreadwrite.h @@ -468,6 +468,33 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias; # define AV_WN64A(p, v) AV_WNA(64, p, v) #endif +/* + * The AV_COPYxxU macros are suitable for copying data to/from unaligned + * memory locations. + */ + +#define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s)); + +#ifndef AV_COPY16U +# define AV_COPY16U(d, s) AV_COPYU(16, d, s) +#endif + +#ifndef AV_COPY32U +# define AV_COPY32U(d, s) AV_COPYU(32, d, s) +#endif + +#ifndef AV_COPY64U +# define AV_COPY64U(d, s) AV_COPYU(64, d, s) +#endif + +#ifndef AV_COPY128U +# define AV_COPY128U(d, s) \ + do { \ + AV_COPY64U(d, s); \ + AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8); \ + } while(0) +#endif + /* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be * naturally aligned. They may be implemented using MMX, * so emms_c() must be called before using any float code |