Move ff_reverse in libavcodec to av_reverse in libavutil.

Patch by Francesco Lavra, francescolavra interfree it

Originally committed as revision 20484 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/ac3enc.c

@@ -27,7 +27,7 @@
 //#define DEBUG_BITALLOC
 #include "libavutil/crc.h"
 #include "avcodec.h"
-#include "get_bits.h" // for ff_reverse
+#include "libavutil/common.h" /* for av_reverse */
 #include "put_bits.h"
 #include "ac3.h"
 #include "audioconvert.h"
@@ -138,7 +138,7 @@ static void fft(IComplex *z, int ln)
 
     /* reverse */
     for(j=0;j<np;j++) {
-        int k = ff_reverse[j] >> (8 - ln);
+        int k = av_reverse[j] >> (8 - ln);
         if (k < j)
             FFSWAP(IComplex, z[k], z[j]);
     }

libavcodec/asv1.c

@@ -25,7 +25,7 @@
  */
 
 #include "avcodec.h"
-#include "get_bits.h"
+#include "libavutil/common.h"
 #include "put_bits.h"
 #include "dsputil.h"
 #include "mpeg12data.h"
@@ -140,11 +140,11 @@ static av_cold void init_vlcs(ASV1Context *a){
 
 //FIXME write a reversed bitstream reader to avoid the double reverse
 static inline int asv2_get_bits(GetBitContext *gb, int n){
-    return ff_reverse[ get_bits(gb, n) << (8-n) ];
+    return av_reverse[ get_bits(gb, n) << (8-n) ];
 }
 
 static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
-    put_bits(pb, n, ff_reverse[ v << (8-n) ]);
+    put_bits(pb, n, av_reverse[ v << (8-n) ]);
 }
 
 static inline int asv1_get_level(GetBitContext *gb){
@@ -417,7 +417,7 @@ static int decode_frame(AVCodecContext *avctx,
     else{
         int i;
         for(i=0; i<buf_size; i++)
-            a->bitstream_buffer[i]= ff_reverse[ buf[i] ];
+            a->bitstream_buffer[i]= av_reverse[ buf[i] ];
     }
 
     init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
@@ -519,7 +519,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
     else{
         int i;
         for(i=0; i<4*size; i++)
-            buf[i]= ff_reverse[ buf[i] ];
+            buf[i]= av_reverse[ buf[i] ];
     }
 
     return size*4;

libavcodec/get_bits.h

@@ -49,8 +49,6 @@
 #   endif
 #endif
 
-extern const uint8_t ff_reverse[256];
-
 #if ARCH_X86
 // avoid +32 for shift optimization (gcc should do that ...)
 static inline  int32_t NEG_SSR32( int32_t a, int8_t s){

libavcodec/indeo2.c

@@ -27,6 +27,7 @@
 #include "avcodec.h"
 #include "get_bits.h"
 #include "indeo2data.h"
+#include "libavutil/common.h"
 
 typedef struct Ir2Context{
     AVCodecContext *avctx;
@@ -160,7 +161,7 @@ static int ir2_decode_frame(AVCodecContext *avctx,
     /* decide whether frame uses deltas or not */
 #ifndef ALT_BITSTREAM_READER_LE
     for (i = 0; i < buf_size; i++)
-        buf[i] = ff_reverse[buf[i]];
+        buf[i] = av_reverse[buf[i]];
 #endif
     start = 48; /* hardcoded for now */
 

libavcodec/pcm.c

@@ -25,7 +25,7 @@
  */
 
 #include "avcodec.h"
-#include "get_bits.h" // for ff_reverse
+#include "libavutil/common.h" /* for av_reverse */
 #include "bytestream.h"
 
 #define MAX_CHANNELS 64
@@ -194,8 +194,8 @@ static int pcm_encode_frame(AVCodecContext *avctx,
         break;
     case CODEC_ID_PCM_S24DAUD:
         for(;n>0;n--) {
-            uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] +
-                           (ff_reverse[*samples & 0xff] << 8);
+            uint32_t tmp = av_reverse[(*samples >> 8) & 0xff] +
+                           (av_reverse[*samples & 0xff] << 8);
             tmp <<= 4; // sync flags would go here
             bytestream_put_be24(&dst, tmp);
             samples++;
@@ -396,8 +396,8 @@ static int pcm_decode_frame(AVCodecContext *avctx,
         for(;n>0;n--) {
           uint32_t v = bytestream_get_be24(&src);
           v >>= 4; // sync flags are here
-          *samples++ = ff_reverse[(v >> 8) & 0xff] +
-                       (ff_reverse[v & 0xff] << 8);
+          *samples++ = av_reverse[(v >> 8) & 0xff] +
+                       (av_reverse[v & 0xff] << 8);
         }
         break;
     case CODEC_ID_PCM_S16LE_PLANAR:

libavcodec/tiff.c

@@ -31,6 +31,7 @@
 #include "lzw.h"
 #include "tiff.h"
 #include "faxcompr.h"
+#include "libavutil/common.h"
 
 
 typedef struct TiffContext {
@@ -148,7 +149,7 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
             memcpy(src2, src, size);
         }else{
             for(i = 0; i < size; i++)
-                src2[i] = ff_reverse[src[i]];
+                src2[i] = av_reverse[src[i]];
         }
         memset(src2+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
         switch(s->compr){

libavcodec/utils.c

@@ -45,25 +45,6 @@
 #include <fcntl.h>
 #endif
 
-const uint8_t ff_reverse[256]={
-0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
-0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
-0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
-0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
-0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
-0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
-0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
-0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
-0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
-0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
-0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
-0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
-0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
-0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
-0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
-0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
-};
-
 static int volatile entangled_thread_counter=0;
 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
 static void *codec_mutex;

libavcodec/wnv1.c

@@ -26,6 +26,7 @@
 
 #include "avcodec.h"
 #include "get_bits.h"
+#include "libavutil/common.h"
 
 
 typedef struct WNV1Context{
@@ -51,7 +52,7 @@ static inline int wnv1_get_code(WNV1Context *w, int base_value)
     int v = get_vlc2(&w->gb, code_vlc.table, CODE_VLC_BITS, 1);
 
     if(v==15)
-        return ff_reverse[ get_bits(&w->gb, 8 - w->shift) ];
+        return av_reverse[ get_bits(&w->gb, 8 - w->shift) ];
     else
         return base_value + ((v - 7)<<w->shift);
 }
@@ -87,7 +88,7 @@ static int decode_frame(AVCodecContext *avctx,
     p->key_frame = 1;
 
     for(i=8; i<buf_size; i++)
-        rbuf[i]= ff_reverse[ buf[i] ];
+        rbuf[i]= av_reverse[ buf[i] ];
     init_get_bits(&l->gb, rbuf+8, (buf_size-8)*8);
 
     if (buf[2] >> 4 == 6)

libavutil/avutil.h

@@ -35,7 +35,7 @@
 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
 
 #define LIBAVUTIL_VERSION_MAJOR 50
-#define LIBAVUTIL_VERSION_MINOR  3
+#define LIBAVUTIL_VERSION_MINOR  4
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

libavutil/common.h

@@ -136,6 +136,8 @@
 /* misc math functions */
 extern const uint8_t ff_log2_tab[256];
 
+extern const uint8_t av_reverse[256];
+
 static inline av_const int av_log2(unsigned int v)
 {
     int n = 0;

libavutil/mathematics.c

@@ -50,6 +50,25 @@ const uint8_t ff_log2_tab[256]={
         7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
 };
 
+const uint8_t av_reverse[256]={
+0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
+0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
+0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
+0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
+0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
+0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
+0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
+0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
+0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
+0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
+0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
+0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
+0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
+0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
+0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
+0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
+};
+
 int64_t av_gcd(int64_t a, int64_t b){
     if(b) return av_gcd(b, a%b);
     else  return a;