#define FFMPEG_VERSION_INT 0x000408
#define FFMPEG_VERSION "0.4.8"
-#define LIBAVCODEC_BUILD 4711
+#define LIBAVCODEC_BUILD 4712
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVCODEC_VERSION FFMPEG_VERSION
* rescale a 64bit integer.
* a simple a*b/c isnt possible as it can overflow
*/
-int64_t av_rescale(int64_t a, int b, int c);
+int64_t av_rescale(int64_t a, int64_t b, int64_t c);
/**
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "integer.h"
#include <stdarg.h>
+#include <limits.h>
static void avcodec_default_free_buffers(AVCodecContext *s);
return exact;
}
-int64_t av_rescale(int64_t a, int b, int c){
- uint64_t h, l;
+int64_t av_rescale(int64_t a, int64_t b, int64_t c){
+ AVInteger ai, ci;
assert(c > 0);
assert(b >=0);
if(a<0) return -av_rescale(-a, b, c);
- h= a>>32;
- if(h==0) return a*b/c;
+ if(b<=INT_MAX && c<=INT_MAX){
+ if(a<=INT_MAX)
+ return (a * b + c/2)/c;
+ else
+ return a/c*b + (a%c*b + c/2)/c;
+ }
- l= a&0xFFFFFFFF;
- l *= b;
- h *= b;
-
- l += (h%c)<<32;
-
- return ((h/c)<<32) + l/c;
+ ai= av_mul_i(av_int2i(a), av_int2i(b));
+ ci= av_int2i(c);
+ ai= av_add_i(ai, av_shr_i(ci,1));
+
+ return av_i2int(av_div_i(ai, ci));
}
/* av_log API */