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path: root/core/multimedia/opieplayer/libmpeg3/video/worksheet.c
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-rw-r--r--core/multimedia/opieplayer/libmpeg3/video/worksheet.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/core/multimedia/opieplayer/libmpeg3/video/worksheet.c b/core/multimedia/opieplayer/libmpeg3/video/worksheet.c
new file mode 100644
index 0000000..c5a0553
--- a/dev/null
+++ b/core/multimedia/opieplayer/libmpeg3/video/worksheet.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+
+static LONGLONG mpeg3_MMX_601_Y_COEF = 0x0000004000400040;
+
+inline void mpeg3_601_mmx(unsigned long y,
+ unsigned long *output)
+{
+asm("
+/* Output will be 0x00rrggbb */
+ movd (%0), %%mm0; /* Load y 0x00000000000000yy */
+/* pmullw mpeg3_MMX_601_Y_COEF, %%mm0; // Scale y 0x00000000000000yy */
+ psllw $6, %%mm0; /* Shift y coeffs 0x0000yyy0yyy0yyy0 */
+ movd %%mm0, (%1); /* Store output */
+ "
+:
+: "r" (&y), "r" (output));
+}
+
+
+int main(int argc, char *argv[])
+{
+ unsigned char output[1024];
+
+ memset(output, 0, 1024);
+ mpeg3_601_mmx(1, (unsigned long*)output);
+ printf("%02x%02x\n", *(unsigned char*)&output[1], *(unsigned char*)&output[0]);
+}