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authorMartin Storsjö <martin@martin.st>2018-03-31 21:54:32 +0300
committerMartin Storsjö <martin@martin.st>2018-03-31 21:54:56 +0300
commitf33f728470434a9981a53d7560d67657b93d1e26 (patch)
tree8904c9d5b3a65bfaf5b7bd94d79cc590f646930c /libswscale/arm/swscale_unscaled.c
parent0c25caa4708cc3a89a9ee9666d0257e6dc6a1573 (diff)
arm: swscale: Only compile the rgb2yuv asm if .dn aliases are supported
Vanilla clang supports altmacro since clang 5.0, and thus doesn't require gas-preprocessor for building the arm assembly any longer. However, the built-in assembler doesn't support .dn directives. This readds checks that were removed in d7320ca3ed10f0d, when the last usage of .dn directives within libav were removed. Alternatively, the assembly could be rewritten to not use the .dn directive, making it available to clang users. Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libswscale/arm/swscale_unscaled.c')
-rw-r--r--libswscale/arm/swscale_unscaled.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libswscale/arm/swscale_unscaled.c b/libswscale/arm/swscale_unscaled.c
index e1597ab42d..e41f294eac 100644
--- a/libswscale/arm/swscale_unscaled.c
+++ b/libswscale/arm/swscale_unscaled.c
@@ -23,6 +23,7 @@
#include "libswscale/swscale_internal.h"
#include "libavutil/arm/cpu.h"
+#if HAVE_AS_DN_DIRECTIVE
extern void rgbx_to_nv12_neon_32(const uint8_t *src, uint8_t *y, uint8_t *chroma,
int width, int height,
int y_stride, int c_stride, int src_stride,
@@ -178,3 +179,8 @@ void ff_get_unscaled_swscale_arm(SwsContext *c)
if (have_neon(cpu_flags))
get_unscaled_swscale_neon(c);
}
+#else
+void ff_get_unscaled_swscale_arm(SwsContext *c)
+{
+}
+#endif