Add FFMPEG_ prefix to all multiple inclusion guards.

[ffmpeg] / libavcodec / cabac.h

diff --git a/libavcodec/cabac.h b/libavcodec/cabac.h
index 9593789e1051db7cabe5dd9f91f732d62b97185c..d7f58d72848f7ef1ae5e254d19c637d4f5f8555c 100644 (file)
--- a/libavcodec/cabac.h
+++ b/libavcodec/cabac.h
@@ -17,7 +17,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
  */
 
 /**
@@ -25,12 +24,13 @@
  * Context Adaptive Binary Arithmetic Coder.
  */
 
+#ifndef FFMPEG_CABAC_H
+#define FFMPEG_CABAC_H
+
+#include "bitstream.h"
 
 //#undef NDEBUG
 #include <assert.h>
-#ifdef ARCH_X86_64
-#define ARCH_X86
-#endif
 #ifdef ARCH_X86
 #include "x86_cpu.h"
 #endif
@@ -90,6 +90,7 @@ static inline void renorm_cabac_encoder(CABACContext *c){
     }
 }
 
+#if 0
 static void put_cabac(CABACContext *c, uint8_t * const state, int bit){
     int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + *state];
 
@@ -259,6 +260,7 @@ static void put_cabac_ueg(CABACContext *c, uint8_t * state, int v, int max, int
             put_cabac_bypass(c, sign);
     }
 }
+#endif /* 0 */
 
 static void refill(CABACContext *c){
 #if CABAC_BITS == 16
@@ -270,6 +272,7 @@ static void refill(CABACContext *c){
     c->bytestream+= CABAC_BITS/8;
 }
 
+#if ! ( defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS) )
 static void refill2(CABACContext *c){
     int i, x;
 
@@ -287,6 +290,7 @@ static void refill2(CABACContext *c){
     c->low += x<<i;
     c->bytestream+= CABAC_BITS/8;
 }
+#endif
 
 static inline void renorm_cabac_decoder(CABACContext *c){
     while(c->range < 0x100){
@@ -366,7 +370,7 @@ static inline void renorm_cabac_decoder_once(CABACContext *c){
         refill(c);
 }
 
-static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state){
+static av_always_inline int get_cabac_inline(CABACContext *c, uint8_t * const state){
     //FIXME gcc generates duplicate load/stores for c->low and c->range
 #define LOW          "0"
 #define RANGE        "4"
@@ -379,7 +383,7 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
 #define BYTE        "16"
 #define BYTEEND     "20"
 #endif
-#if defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__))
+#if defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS)
     int bit;
 
 #ifndef BRANCHLESS_CABAC_DECODER
@@ -457,7 +461,7 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
         "2:                                     \n\t"
         "movl %%edx, "RANGE    "(%2)            \n\t"
         "movl %%ebx, "LOW      "(%2)            \n\t"
-        :"=&a"(bit) //FIXME this is fragile gcc either runs out of registers or misscompiles it (for example if "+a"(bit) or "+m"(*state) is used
+        :"=&a"(bit) //FIXME this is fragile gcc either runs out of registers or miscompiles it (for example if "+a"(bit) or "+m"(*state) is used
         :"r"(state), "r"(c)
         : "%"REG_c, "%ebx", "%edx", "%"REG_S, "memory"
     );
@@ -465,7 +469,7 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
 #else /* BRANCHLESS_CABAC_DECODER */
 
 
-#if defined CMOV_IS_FAST
+#if defined HAVE_FAST_CMOV
 #define BRANCHLESS_GET_CABAC_UPDATE(ret, cabac, statep, low, lowword, range, tmp, tmpbyte)\
         "mov    "tmp"       , %%ecx                                     \n\t"\
         "shl    $17         , "tmp"                                     \n\t"\
@@ -475,7 +479,7 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
         "and    %%ecx       , "tmp"                                     \n\t"\
         "sub    "tmp"       , "low"                                     \n\t"\
         "xor    %%ecx       , "ret"                                     \n\t"
-#else /* CMOV_IS_FAST */
+#else /* HAVE_FAST_CMOV */
 #define BRANCHLESS_GET_CABAC_UPDATE(ret, cabac, statep, low, lowword, range, tmp, tmpbyte)\
         "mov    "tmp"       , %%ecx                                     \n\t"\
         "shl    $17         , "tmp"                                     \n\t"\
@@ -488,7 +492,7 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
         "and    "tmp"       , %%ecx                                     \n\t"\
         "sub    %%ecx       , "low"                                     \n\t"\
         "xor    "tmp"       , "ret"                                     \n\t"
-#endif /* CMOV_IS_FAST */
+#endif /* HAVE_FAST_CMOV */
 
 
 #define BRANCHLESS_GET_CABAC(ret, cabac, statep, low, lowword, range, tmp, tmpbyte)\
@@ -535,33 +539,33 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
     );
     bit&=1;
 #endif /* BRANCHLESS_CABAC_DECODER */
-#else /* defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__)) */
+#else /* defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS) */
     int s = *state;
     int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + s];
-    int bit, lps_mask attribute_unused;
+    int bit, lps_mask av_unused;
 
     c->range -= RangeLPS;
 #ifndef BRANCHLESS_CABAC_DECODER
-    if(c->low < (c->range<<17)){
+    if(c->low < (c->range<<(CABAC_BITS+1))){
         bit= s&1;
         *state= ff_h264_mps_state[s];
         renorm_cabac_decoder_once(c);
     }else{
         bit= ff_h264_norm_shift[RangeLPS];
-        c->low -= (c->range<<17);
+        c->low -= (c->range<<(CABAC_BITS+1));
         *state= ff_h264_lps_state[s];
         c->range = RangeLPS<<bit;
         c->low <<= bit;
         bit= (s&1)^1;
 
-        if(!(c->low & 0xFFFF)){
+        if(!(c->low & CABAC_MASK)){
             refill2(c);
         }
     }
 #else /* BRANCHLESS_CABAC_DECODER */
-    lps_mask= ((c->range<<17) - c->low)>>31;
+    lps_mask= ((c->range<<(CABAC_BITS+1)) - c->low)>>31;
 
-    c->low -= (c->range<<17) & lps_mask;
+    c->low -= (c->range<<(CABAC_BITS+1)) & lps_mask;
     c->range += (RangeLPS - c->range) & lps_mask;
 
     s^=lps_mask;
@@ -574,11 +578,11 @@ static int always_inline get_cabac_inline(CABACContext *c, uint8_t * const state
     if(!(c->low & CABAC_MASK))
         refill2(c);
 #endif /* BRANCHLESS_CABAC_DECODER */
-#endif /* defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__)) */
+#endif /* defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS) */
     return bit;
 }
 
-static int __attribute((noinline)) get_cabac_noinline(CABACContext *c, uint8_t * const state){
+static int av_noinline get_cabac_noinline(CABACContext *c, uint8_t * const state){
     return get_cabac_inline(c,state);
 }
 
@@ -623,7 +627,7 @@ static int get_cabac_bypass(CABACContext *c){
     if(!(c->low & CABAC_MASK))
         refill(c);
 
-    range= c->range<<17;
+    range= c->range<<(CABAC_BITS+1);
     if(c->low < range){
         return 0;
     }else{
@@ -634,8 +638,8 @@ static int get_cabac_bypass(CABACContext *c){
 }
 
 
-static always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
-#ifdef ARCH_X86
+static av_always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
+#if defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__))
     asm volatile(
         "movl "RANGE    "(%1), %%ebx            \n\t"
         "movl "LOW      "(%1), %%eax            \n\t"
@@ -672,7 +676,7 @@ static always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
     if(!(c->low & CABAC_MASK))
         refill(c);
 
-    range= c->range<<17;
+    range= c->range<<(CABAC_BITS+1);
     c->low -= range;
     mask= c->low >> 31;
     range &= mask;
@@ -682,8 +686,8 @@ static always_inline int get_cabac_bypass_sign(CABACContext *c, int val){
 }
 
 //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)
-#if defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__))
+//FIXME use some macros to avoid duplicatin get_cabac (cannot be done yet as that would make optimization work hard)
+#if defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS)
 static int decode_significance_x86(CABACContext *c, int max_coeff, uint8_t *significant_coeff_ctx_base, int *index){
     void *end= significant_coeff_ctx_base + max_coeff - 1;
     int minusstart= -(int)significant_coeff_ctx_base;
@@ -789,7 +793,7 @@ static int decode_significance_8x8_x86(CABACContext *c, uint8_t *significant_coe
     );
     return coeff_count;
 }
-#endif /* defined(ARCH_X86) && !(defined(PIC) && defined(__GNUC__)) */
+#endif /* defined(ARCH_X86) && && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS) */
 
 /**
  *
@@ -797,7 +801,7 @@ static int decode_significance_8x8_x86(CABACContext *c, uint8_t *significant_coe
  */
 static int get_cabac_terminate(CABACContext *c){
     c->range -= 2;
-    if(c->low < c->range<<17){
+    if(c->low < c->range<<(CABAC_BITS+1)){
         renorm_cabac_decoder_once(c);
         return 0;
     }else{
@@ -805,8 +809,9 @@ static int get_cabac_terminate(CABACContext *c){
     }
 }
 
+#if 0
 /**
- * get (truncated) unnary binarization.
+ * Get (truncated) unary binarization.
  */
 static int get_cabac_u(CABACContext *c, uint8_t * state, int max, int max_index, int truncated){
     int i;
@@ -860,3 +865,6 @@ static int get_cabac_ueg(CABACContext *c, uint8_t * state, int max, int is_signe
     }else
         return i;
 }
+#endif /* 0 */
+
+#endif /* FFMPEG_CABAC_H */