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| author | Luca Barbato <lu_zero@gentoo.org> | 2012-07-25 16:22:34 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2012-09-05 17:07:24 +0300 |
| commit | 0db2d94280e260af5f3ad7993c5a6357462f17c9 (patch) | |
| tree | 5eab6964513fea7c0e07eb70082cfc1a6ab3bd58 /libavcodec | |
| parent | b797f3c4d01e62b4db689d69bf417cced9099b06 (diff) | |
| download | ffmpeg-0db2d94280e260af5f3ad7993c5a6357462f17c9.tar.gz | |
dsputil: workaround __VA_ARGS__ missing tokenization for MSVC
A second expansion forces the preprocessor to tokenize properly.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dsputil.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h index e47cd2cec2..bb70428e2a 100644 --- a/libavcodec/dsputil.h +++ b/libavcodec/dsputil.h @@ -622,22 +622,26 @@ void ff_mlp_init_x86(DSPContext* c, AVCodecContext *avctx); # define STRIDE_ALIGN 8 #endif +// Some broken preprocessors need a second expansion +// to be forced to tokenize __VA_ARGS__ +#define E(x) x + #define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \ uint8_t la_##v[sizeof(t s o) + (a)]; \ t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a) #define LOCAL_ALIGNED_D(a, t, v, s, o, ...) DECLARE_ALIGNED(a, t, v) s o -#define LOCAL_ALIGNED(a, t, v, ...) LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,) +#define LOCAL_ALIGNED(a, t, v, ...) E(LOCAL_ALIGNED_A(a, t, v, __VA_ARGS__,,)) #if HAVE_LOCAL_ALIGNED_8 -# define LOCAL_ALIGNED_8(t, v, ...) LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,) +# define LOCAL_ALIGNED_8(t, v, ...) E(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,)) #else # define LOCAL_ALIGNED_8(t, v, ...) LOCAL_ALIGNED(8, t, v, __VA_ARGS__) #endif #if HAVE_LOCAL_ALIGNED_16 -# define LOCAL_ALIGNED_16(t, v, ...) LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,) +# define LOCAL_ALIGNED_16(t, v, ...) E(LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,)) #else # define LOCAL_ALIGNED_16(t, v, ...) LOCAL_ALIGNED(16, t, v, __VA_ARGS__) #endif |