}
static int get_cabac_bypass(CABACContext *c){
+#if 0 //not faster
+ int bit;
+ asm volatile(
+ "movl "RANGE "(%1), %%ebx \n\t"
+ "movl "LOW "(%1), %%eax \n\t"
+ "shl $17, %%ebx \n\t"
+ "add %%eax, %%eax \n\t"
+ "sub %%ebx, %%eax \n\t"
+ "cdq \n\t"
+ "and %%edx, %%ebx \n\t"
+ "add %%ebx, %%eax \n\t"
+ "test %%ax, %%ax \n\t"
+ " jnz 1f \n\t"
+ "movl "BYTE "(%1), %%ebx \n\t"
+ "subl $0xFFFF, %%eax \n\t"
+ "movzwl (%%ebx), %%ecx \n\t"
+ "bswap %%ecx \n\t"
+ "shrl $15, %%ecx \n\t"
+ "addl $2, %%ebx \n\t"
+ "addl %%ecx, %%eax \n\t"
+ "movl %%ebx, "BYTE "(%1) \n\t"
+ "1: \n\t"
+ "movl %%eax, "LOW "(%1) \n\t"
+
+ :"=&d"(bit)
+ :"r"(c)
+ : "%eax", "%ebx", "%ecx", "memory"
+ );
+ return bit+1;
+#else
int range;
c->low += c->low;
c->low -= range;
return 1;
}
+#endif
}
+
+
+static always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
+#ifdef ARCH_X86
+ int bit;
+ asm volatile(
+ "movl "RANGE "(%1), %%ebx \n\t"
+ "movl "LOW "(%1), %%eax \n\t"
+ "shl $17, %%ebx \n\t"
+ "add %%eax, %%eax \n\t"
+ "sub %%ebx, %%eax \n\t"
+ "cdq \n\t"
+ "and %%edx, %%ebx \n\t"
+ "add %%ebx, %%eax \n\t"
+ "xor %%edx, %%ecx \n\t"
+ "sub %%edx, %%ecx \n\t"
+ "test %%ax, %%ax \n\t"
+ " jnz 1f \n\t"
+ "movl "BYTE "(%1), %%ebx \n\t"
+ "subl $0xFFFF, %%eax \n\t"
+ "movzwl (%%ebx), %%edx \n\t"
+ "bswap %%edx \n\t"
+ "shrl $15, %%edx \n\t"
+ "addl $2, %%ebx \n\t"
+ "addl %%edx, %%eax \n\t"
+ "movl %%ebx, "BYTE "(%1) \n\t"
+ "1: \n\t"
+ "movl %%eax, "LOW "(%1) \n\t"
+
+ :"+c"(val)
+ :"r"(c)
+ : "%eax", "%ebx", "%edx", "memory"
+ );
+ return val;
+#else
+ int range, mask;
+ c->low += c->low;
+
+ if(!(c->low & CABAC_MASK))
+ refill(c);
+
+ range= c->range<<17;
+ c->low -= range;
+ mask= c->low >> 31;
+ range &= mask;
+ c->low += range;
+ return (val^mask)-mask;
+#endif
+}
+
//FIXME the x86 code from this file should be moved into i386/h264 or cabac something.c/h (note ill kill you if you move my code away from under my fingers before iam finished with it!)
//FIXME use some macros to avoid duplicatin get_cabac (cant be done yet as that would make optimization work hard)
#ifdef ARCH_X86