3 * common internal api header.
9 #if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
13 //#define ALT_BITSTREAM_WRITER
14 //#define ALIGNED_BITSTREAM_WRITER
16 #define ALT_BITSTREAM_READER
17 //#define LIBMPEG2_BITSTREAM_READER
18 //#define A32_BITSTREAM_READER
19 #define LIBMPEG2_BITSTREAM_READER_HACK //add BERO
21 #ifdef HAVE_AV_CONFIG_H
22 /* only include the following when compiling package */
41 #define M_PI 3.14159265358979323846
46 # define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
49 #define AVOPTION_CODEC_BOOL(name, help, field) \
50 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL }
51 #define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval) \
52 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval }
53 #define AVOPTION_CODEC_FLAG(name, help, field, flag, defval) \
54 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval }
55 #define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval) \
56 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval }
57 #define AVOPTION_CODEC_STRING(name, help, field, str, val) \
58 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str }
59 #define AVOPTION_CODEC_RCOVERRIDE(name, help, field) \
60 { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL }
61 #define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr }
62 #define AVOPTION_END() AVOPTION_SUB(NULL)
66 extern const struct AVOption avoptions_common[3 + 5];
68 extern const struct AVOption avoptions_common[3];
70 extern const struct AVOption avoptions_workaround_bug[11];
72 #endif /* HAVE_AV_CONFIG_H */
74 /* Suppress restrict if it was not defined in config.h. */
79 #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
80 # define always_inline __attribute__((always_inline)) inline
82 # define always_inline inline
89 typedef unsigned short uint16_t;
90 typedef signed short int16_t;
91 typedef unsigned char uint8_t;
92 typedef unsigned int uint32_t;
93 typedef unsigned __int64 uint64_t;
94 typedef signed char int8_t;
95 typedef signed int int32_t;
96 typedef signed __int64 int64_t;
99 # define int64_t_C(c) (c ## i64)
100 # define uint64_t_C(c) (c ## i64)
102 # define inline __inline
105 # define int64_t_C(c) (c ## LL)
106 # define uint64_t_C(c) (c ## ULL)
107 # endif /* __MINGW32__ */
113 # define snprintf _snprintf
114 # define vsnprintf _vsnprintf
116 /* CONFIG_WIN32 end */
117 #elif defined (CONFIG_OS2)
120 #include <inttypes.h>
123 #define int64_t_C(c) (c ## LL)
124 #define uint64_t_C(c) (c ## ULL)
127 #ifdef HAVE_AV_CONFIG_H
129 #ifdef USE_FASTMEMCPY
130 #include "fastmemcpy.h"
135 #endif /* HAVE_AV_CONFIG_H */
142 #include <inttypes.h>
145 #define int64_t_C(c) (c ## LL)
146 #define uint64_t_C(c) (c ## ULL)
149 #ifdef HAVE_AV_CONFIG_H
151 # ifdef USE_FASTMEMCPY
152 # include "fastmemcpy.h"
154 # endif /* HAVE_AV_CONFIG_H */
156 #endif /* !CONFIG_WIN32 && !CONFIG_OS2 */
158 #ifdef HAVE_AV_CONFIG_H
162 # if defined(__MINGW32__) || defined(__CYGWIN__) || \
163 defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
164 # define MANGLE(a) "_" #a
166 # define MANGLE(a) #a
177 # if defined(CONFIG_WIN32) && !defined(__MINGW32__)
179 inline void dprintf(const char* fmt,...) {}
184 # define dprintf(fmt,args...) printf(fmt, ## args)
186 # define dprintf(fmt,args...)
189 # endif /* !CONFIG_WIN32 */
191 # define av_abort() do { fprintf(stderr, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
193 //rounded divison & shift
194 #define RSHIFT(a,b) ((a) > 0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b))
196 #define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
197 #define ABS(a) ((a) >= 0 ? (a) : (-(a)))
199 #define FFMAX(a,b) ((a) > (b) ? (a) : (b))
200 #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
202 extern const uint32_t inverse[256];
205 # define FASTDIV(a,b) \
210 :"=d"(ret),"=a"(dmy)\
211 :"1"(a),"g"(inverse[b])\
215 #elif defined(CONFIG_FASTDIV)
216 # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
218 # define FASTDIV(a,b) ((a)/(b))
222 // avoid +32 for shift optimization (gcc should do that ...)
223 static inline int32_t NEG_SSR32( int32_t a, int8_t s){
224 asm ("sarl %1, %0\n\t"
226 : "ic" ((uint8_t)(-s))
230 static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
231 asm ("shrl %1, %0\n\t"
233 : "ic" ((uint8_t)(-s))
238 # define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
239 # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
244 struct PutBitContext;
246 typedef void (*WriteDataFunc)(void *, uint8_t *, int);
248 typedef struct PutBitContext {
249 #ifdef ALT_BITSTREAM_WRITER
250 uint8_t *buf, *buf_end;
255 uint8_t *buf, *buf_ptr, *buf_end;
257 int64_t data_out_size; /* in bytes */
260 void init_put_bits(PutBitContext *s,
261 uint8_t *buffer, int buffer_size,
263 void (*write_data)(void *, uint8_t *, int));
265 int64_t get_bit_count(PutBitContext *s); /* XXX: change function name */
266 void align_put_bits(PutBitContext *s);
267 void flush_put_bits(PutBitContext *s);
268 void put_string(PutBitContext * pbc, char *s);
272 typedef struct GetBitContext {
273 const uint8_t *buffer, *buffer_end;
274 #ifdef ALT_BITSTREAM_READER
276 #elif defined LIBMPEG2_BITSTREAM_READER
280 #elif defined A32_BITSTREAM_READER
281 uint32_t *buffer_ptr;
289 static inline int get_bits_count(GetBitContext *s);
291 #define VLC_TYPE int16_t
295 VLC_TYPE (*table)[2]; ///< code, bits
296 int table_size, table_allocated;
299 typedef struct RL_VLC_ELEM {
306 #define UNALIGNED_STORES_ARE_BAD
309 /* used to avoid missaligned exceptions on some archs (alpha, ...) */
311 # define unaligned32(a) (*(uint32_t*)(a))
314 static inline uint32_t unaligned32(const void *v) {
317 } __attribute__((packed));
319 return ((const struct Unaligned *) v)->i;
321 # elif defined(__DECC)
322 static inline uint32_t unaligned32(const void *v) {
323 return *(const __unaligned uint32_t *) v;
326 static inline uint32_t unaligned32(const void *v) {
327 return *(const uint32_t *) v;
332 #ifndef ALT_BITSTREAM_WRITER
333 static inline void put_bits(PutBitContext *s, int n, unsigned int value)
335 unsigned int bit_buf;
339 st_out_bit_counts[st_current_index] += n;
341 // printf("put_bits=%d %x\n", n, value);
342 assert(n == 32 || value < (1U << n));
344 bit_buf = s->bit_buf;
345 bit_left = s->bit_left;
347 // printf("n=%d value=%x cnt=%d buf=%x\n", n, value, bit_cnt, bit_buf);
350 bit_buf = (bit_buf<<n) | value;
354 bit_buf |= value >> (n - bit_left);
355 #ifdef UNALIGNED_STORES_ARE_BAD
356 if (3 & (int) s->buf_ptr) {
357 s->buf_ptr[0] = bit_buf >> 24;
358 s->buf_ptr[1] = bit_buf >> 16;
359 s->buf_ptr[2] = bit_buf >> 8;
360 s->buf_ptr[3] = bit_buf ;
363 *(uint32_t *)s->buf_ptr = be2me_32(bit_buf);
364 //printf("bitbuf = %08x\n", bit_buf);
370 s->bit_buf = bit_buf;
371 s->bit_left = bit_left;
376 #ifdef ALT_BITSTREAM_WRITER
377 static inline void put_bits(PutBitContext *s, int n, unsigned int value)
379 # ifdef ALIGNED_BITSTREAM_WRITER
382 "movl %0, %%ecx \n\t"
383 "xorl %%eax, %%eax \n\t"
384 "shrdl %%cl, %1, %%eax \n\t"
386 "movl %0, %%ecx \n\t"
387 "shrl $3, %%ecx \n\t"
388 "andl $0xFFFFFFFC, %%ecx \n\t"
390 "orl %1, (%2, %%ecx) \n\t"
393 "movl %%eax, 4(%2, %%ecx) \n\t"
394 : "=&r" (s->index), "=&r" (value)
395 : "r" (s->buf), "r" (n), "0" (s->index), "1" (value<<(-n))
400 uint32_t *ptr= ((uint32_t *)s->buf)+(index>>5);
404 ptr[0] |= be2me_32(value>>(index&31));
405 ptr[1] = be2me_32(value<<(32-(index&31)));
406 //if(n>24) printf("%d %d\n", n, value);
410 # else //ALIGNED_BITSTREAM_WRITER
413 "movl $7, %%ecx \n\t"
414 "andl %0, %%ecx \n\t"
415 "addl %3, %%ecx \n\t"
419 "movl %0, %%ecx \n\t"
420 "shrl $3, %%ecx \n\t"
421 "orl %1, (%%ecx, %2) \n\t"
423 "movl $0, 4(%%ecx, %2) \n\t"
424 : "=&r" (s->index), "=&r" (value)
425 : "r" (s->buf), "r" (n), "0" (s->index), "1" (value)
430 uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3));
432 ptr[0] |= be2me_32(value<<(32-n-(index&7) ));
434 //if(n>24) printf("%d %d\n", n, value);
438 # endif //!ALIGNED_BITSTREAM_WRITER
443 static inline uint8_t* pbBufPtr(PutBitContext *s)
445 #ifdef ALT_BITSTREAM_WRITER
446 return s->buf + (s->index>>3);
452 /* Bitstream reader API docs:
454 abritary name which is used as prefix for the internal variables
459 OPEN_READER(name, gb)
460 loads gb into local variables
462 CLOSE_READER(name, gb)
463 stores local vars in gb
465 UPDATE_CACHE(name, gb)
466 refills the internal cache from the bitstream
467 after this call at least MIN_CACHE_BITS will be available,
470 will output the contents of the internal cache, next bit is MSB of 32 or 64 bit (FIXME 64bit)
472 SHOW_UBITS(name, gb, num)
473 will return the nest num bits
475 SHOW_SBITS(name, gb, num)
476 will return the nest num bits and do sign extension
478 SKIP_BITS(name, gb, num)
479 will skip over the next num bits
480 note, this is equinvalent to SKIP_CACHE; SKIP_COUNTER
482 SKIP_CACHE(name, gb, num)
483 will remove the next num bits from the cache (note SKIP_COUNTER MUST be called before UPDATE_CACHE / CLOSE_READER)
485 SKIP_COUNTER(name, gb, num)
486 will increment the internal bit counter (see SKIP_CACHE & SKIP_BITS)
488 LAST_SKIP_CACHE(name, gb, num)
489 will remove the next num bits from the cache if it is needed for UPDATE_CACHE otherwise it will do nothing
491 LAST_SKIP_BITS(name, gb, num)
492 is equinvalent to SKIP_LAST_CACHE; SKIP_COUNTER
494 for examples see get_bits, show_bits, skip_bits, get_vlc
497 static inline int unaligned32_be(const void *v)
501 return (((p[0]<<8) | p[1])<<16) | (p[2]<<8) | (p[3]);
503 return be2me_32( unaligned32(v)); //original
507 #ifdef ALT_BITSTREAM_READER
508 # define MIN_CACHE_BITS 25
510 # define OPEN_READER(name, gb)\
511 int name##_index= (gb)->index;\
512 int name##_cache= 0;\
514 # define CLOSE_READER(name, gb)\
515 (gb)->index= name##_index;\
517 # define UPDATE_CACHE(name, gb)\
518 name##_cache= unaligned32_be( ((uint8_t *)(gb)->buffer)+(name##_index>>3) ) << (name##_index&0x07);\
520 # define SKIP_CACHE(name, gb, num)\
521 name##_cache <<= (num);\
524 # define SKIP_COUNTER(name, gb, num)\
525 name##_index += (num);\
527 # define SKIP_BITS(name, gb, num)\
529 SKIP_CACHE(name, gb, num)\
530 SKIP_COUNTER(name, gb, num)\
533 # define LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)
534 # define LAST_SKIP_CACHE(name, gb, num) ;
536 # define SHOW_UBITS(name, gb, num)\
537 NEG_USR32(name##_cache, num)
539 # define SHOW_SBITS(name, gb, num)\
540 NEG_SSR32(name##_cache, num)
542 # define GET_CACHE(name, gb)\
543 ((uint32_t)name##_cache)
545 static inline int get_bits_count(GetBitContext *s){
548 #elif defined LIBMPEG2_BITSTREAM_READER
549 //libmpeg2 like reader
551 # define MIN_CACHE_BITS 17
553 # define OPEN_READER(name, gb)\
554 int name##_bit_count=(gb)->bit_count;\
555 int name##_cache= (gb)->cache;\
556 uint8_t * name##_buffer_ptr=(gb)->buffer_ptr;\
558 # define CLOSE_READER(name, gb)\
559 (gb)->bit_count= name##_bit_count;\
560 (gb)->cache= name##_cache;\
561 (gb)->buffer_ptr= name##_buffer_ptr;\
563 #ifdef LIBMPEG2_BITSTREAM_READER_HACK
565 # define UPDATE_CACHE(name, gb)\
566 if(name##_bit_count >= 0){\
567 name##_cache+= (int)be2me_16(*(uint16_t*)name##_buffer_ptr) << name##_bit_count;\
568 ((uint16_t*)name##_buffer_ptr)++;\
569 name##_bit_count-= 16;\
574 # define UPDATE_CACHE(name, gb)\
575 if(name##_bit_count >= 0){\
576 name##_cache+= ((name##_buffer_ptr[0]<<8) + name##_buffer_ptr[1]) << name##_bit_count;\
577 name##_buffer_ptr+=2;\
578 name##_bit_count-= 16;\
583 # define SKIP_CACHE(name, gb, num)\
584 name##_cache <<= (num);\
586 # define SKIP_COUNTER(name, gb, num)\
587 name##_bit_count += (num);\
589 # define SKIP_BITS(name, gb, num)\
591 SKIP_CACHE(name, gb, num)\
592 SKIP_COUNTER(name, gb, num)\
595 # define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
596 # define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
598 # define SHOW_UBITS(name, gb, num)\
599 NEG_USR32(name##_cache, num)
601 # define SHOW_SBITS(name, gb, num)\
602 NEG_SSR32(name##_cache, num)
604 # define GET_CACHE(name, gb)\
605 ((uint32_t)name##_cache)
607 static inline int get_bits_count(GetBitContext *s){
608 return (s->buffer_ptr - s->buffer)*8 - 16 + s->bit_count;
611 #elif defined A32_BITSTREAM_READER
613 # define MIN_CACHE_BITS 32
615 # define OPEN_READER(name, gb)\
616 int name##_bit_count=(gb)->bit_count;\
617 uint32_t name##_cache0= (gb)->cache0;\
618 uint32_t name##_cache1= (gb)->cache1;\
619 uint32_t * name##_buffer_ptr=(gb)->buffer_ptr;\
621 # define CLOSE_READER(name, gb)\
622 (gb)->bit_count= name##_bit_count;\
623 (gb)->cache0= name##_cache0;\
624 (gb)->cache1= name##_cache1;\
625 (gb)->buffer_ptr= name##_buffer_ptr;\
627 # define UPDATE_CACHE(name, gb)\
628 if(name##_bit_count > 0){\
629 const uint32_t next= be2me_32( *name##_buffer_ptr );\
630 name##_cache0 |= NEG_USR32(next,name##_bit_count);\
631 name##_cache1 |= next<<name##_bit_count;\
632 name##_buffer_ptr++;\
633 name##_bit_count-= 32;\
637 # define SKIP_CACHE(name, gb, num)\
639 "shldl %2, %1, %0 \n\t"\
641 : "+r" (name##_cache0), "+r" (name##_cache1)\
642 : "Ic" ((uint8_t)num)\
645 # define SKIP_CACHE(name, gb, num)\
646 name##_cache0 <<= (num);\
647 name##_cache0 |= NEG_USR32(name##_cache1,num);\
648 name##_cache1 <<= (num);
651 # define SKIP_COUNTER(name, gb, num)\
652 name##_bit_count += (num);\
654 # define SKIP_BITS(name, gb, num)\
656 SKIP_CACHE(name, gb, num)\
657 SKIP_COUNTER(name, gb, num)\
660 # define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
661 # define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
663 # define SHOW_UBITS(name, gb, num)\
664 NEG_USR32(name##_cache0, num)
666 # define SHOW_SBITS(name, gb, num)\
667 NEG_SSR32(name##_cache0, num)
669 # define GET_CACHE(name, gb)\
672 static inline int get_bits_count(GetBitContext *s){
673 return ((uint8_t*)s->buffer_ptr - s->buffer)*8 - 32 + s->bit_count;
679 * read mpeg1 dc style vlc (sign bit + mantisse with no MSB).
680 * if MSB not set it is negative
681 * @param n length in bits
684 static inline int get_xbits(GetBitContext *s, int n){
686 register int32_t cache;
689 cache = GET_CACHE(re,s);
690 if ((int32_t)cache<0) { //MSB=1
691 tmp = NEG_USR32(cache,n);
693 // tmp = (-1<<n) | NEG_USR32(cache,n) + 1; mpeg12.c algo
694 // tmp = - (NEG_USR32(cache,n) ^ ((1 << n) - 1)); h263.c algo
695 tmp = - NEG_USR32(~cache,n);
697 LAST_SKIP_BITS(re, s, n)
702 static inline int get_sbits(GetBitContext *s, int n){
706 tmp= SHOW_SBITS(re, s, n);
707 LAST_SKIP_BITS(re, s, n)
714 * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
716 static inline unsigned int get_bits(GetBitContext *s, int n){
720 tmp= SHOW_UBITS(re, s, n);
721 LAST_SKIP_BITS(re, s, n)
726 unsigned int get_bits_long(GetBitContext *s, int n);
730 * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
732 static inline unsigned int show_bits(GetBitContext *s, int n){
736 tmp= SHOW_UBITS(re, s, n);
737 // CLOSE_READER(re, s)
741 unsigned int show_bits_long(GetBitContext *s, int n);
743 static inline void skip_bits(GetBitContext *s, int n){
744 //Note gcc seems to optimize this to s->index+=n for the ALT_READER :))
747 LAST_SKIP_BITS(re, s, n)
751 static inline unsigned int get_bits1(GetBitContext *s){
752 #ifdef ALT_BITSTREAM_READER
754 uint8_t result= s->buffer[ index>>3 ];
755 result<<= (index&0x07);
762 return get_bits(s, 1);
766 static inline unsigned int show_bits1(GetBitContext *s){
767 return show_bits(s, 1);
770 static inline void skip_bits1(GetBitContext *s){
774 void init_get_bits(GetBitContext *s,
775 const uint8_t *buffer, int buffer_size);
777 int check_marker(GetBitContext *s, const char *msg);
778 void align_get_bits(GetBitContext *s);
779 int init_vlc(VLC *vlc, int nb_bits, int nb_codes,
780 const void *bits, int bits_wrap, int bits_size,
781 const void *codes, int codes_wrap, int codes_size);
782 void free_vlc(VLC *vlc);
786 * if the vlc code is invalid and max_depth=1 than no bits will be removed
787 * if the vlc code is invalid and max_depth>1 than the number of bits removed
790 #define GET_VLC(code, name, gb, table, bits, max_depth)\
792 int n, index, nb_bits;\
794 index= SHOW_UBITS(name, gb, bits);\
795 code = table[index][0];\
796 n = table[index][1];\
798 if(max_depth > 1 && n < 0){\
799 LAST_SKIP_BITS(name, gb, bits)\
800 UPDATE_CACHE(name, gb)\
804 index= SHOW_UBITS(name, gb, nb_bits) + code;\
805 code = table[index][0];\
806 n = table[index][1];\
807 if(max_depth > 2 && n < 0){\
808 LAST_SKIP_BITS(name, gb, nb_bits)\
809 UPDATE_CACHE(name, gb)\
813 index= SHOW_UBITS(name, gb, nb_bits) + code;\
814 code = table[index][0];\
815 n = table[index][1];\
818 SKIP_BITS(name, gb, n)\
821 #define GET_RL_VLC(level, run, name, gb, table, bits, max_depth)\
823 int n, index, nb_bits;\
825 index= SHOW_UBITS(name, gb, bits);\
826 level = table[index].level;\
827 n = table[index].len;\
829 if(max_depth > 1 && n < 0){\
830 LAST_SKIP_BITS(name, gb, bits)\
831 UPDATE_CACHE(name, gb)\
835 index= SHOW_UBITS(name, gb, nb_bits) + level;\
836 level = table[index].level;\
837 n = table[index].len;\
839 run= table[index].run;\
840 SKIP_BITS(name, gb, n)\
843 // deprecated, dont use get_vlc for new code, use get_vlc2 instead or use GET_VLC directly
844 static inline int get_vlc(GetBitContext *s, VLC *vlc)
847 VLC_TYPE (*table)[2]= vlc->table;
852 GET_VLC(code, re, s, table, vlc->bits, 3)
859 * parses a vlc code, faster then get_vlc()
860 * @param bits is the number of bits which will be read at once, must be
861 * identical to nb_bits in init_vlc()
862 * @param max_depth is the number of times bits bits must be readed to completly
863 * read the longest vlc code
864 * = (max_vlc_length + bits - 1) / bits
866 static always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
867 int bits, int max_depth)
874 GET_VLC(code, re, s, table, bits, max_depth)
884 static inline void print_bin(int bits, int n){
887 for(i=n-1; i>=0; i--){
888 printf("%d", (bits>>i)&1);
894 static inline int get_bits_trace(GetBitContext *s, int n, char *file, char *func, int line){
895 int r= get_bits(s, n);
898 printf("%5d %2d %3d bit @%5d in %s %s:%d\n", r, n, r, get_bits_count(s)-n, file, func, line);
901 static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, char *func, int line){
902 int show= show_bits(s, 24);
903 int pos= get_bits_count(s);
904 int r= get_vlc2(s, table, bits, max_depth);
905 int len= get_bits_count(s) - pos;
906 int bits2= show>>(24-len);
908 print_bin(bits2, len);
910 printf("%5d %2d %3d vlc @%5d in %s %s:%d\n", bits2, len, r, pos, file, func, line);
913 static inline int get_xbits_trace(GetBitContext *s, int n, char *file, char *func, int line){
914 int show= show_bits(s, n);
915 int r= get_xbits(s, n);
918 printf("%5d %2d %3d xbt @%5d in %s %s:%d\n", show, n, r, get_bits_count(s)-n, file, func, line);
922 #define get_bits(s, n) get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
923 #define get_bits1(s) get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
924 #define get_xbits(s, n) get_xbits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
925 #define get_vlc(s, vlc) get_vlc_trace(s, (vlc)->table, (vlc)->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
926 #define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
928 #define tprintf printf
931 #define tprintf(_arg...) {}
934 /* define it to include statistics code (useful only for optimizing
951 extern int st_current_index;
952 extern unsigned int st_bit_counts[ST_NB];
953 extern unsigned int st_out_bit_counts[ST_NB];
955 void print_stats(void);
958 /* misc math functions */
959 extern const uint8_t ff_log2_tab[256];
961 static inline int av_log2(unsigned int v)
966 if (v & 0xffff0000) {
979 static inline int av_log2_16bit(unsigned int v)
995 static inline int mid_pred(int a, int b, int c)
1009 return a + b + c - vmin - vmax;
1012 static inline int clip(int a, int amin, int amax)
1023 extern const uint8_t ff_sqrt_tab[128];
1025 int64_t ff_gcd(int64_t a, int64_t b);
1027 static inline int ff_sqrt(int a)
1033 if(a<128) return ff_sqrt_tab[a];
1035 for(s=15; s>=0; s--){
1036 int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
1046 * converts fourcc string to int
1048 static inline int ff_get_fourcc(const char *s){
1049 assert( strlen(s)==4 );
1051 return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
1054 #define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
1055 #define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
1058 void ff_float2fraction(int *nom_arg, int *denom_arg, double f, int max);
1062 #define MASK_ABS(mask, level)\
1067 : "+a" (level), "=&d" (mask)\
1070 #define MASK_ABS(mask, level)\
1072 level= (level^mask)-mask;
1076 #if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
1077 #define COPY3_IF_LT(x,y,a,b,c,d)\
1080 "cmovl %3, %0 \n\t"\
1081 "cmovl %4, %1 \n\t"\
1082 "cmovl %5, %2 \n\t"\
1083 : "+r" (x), "+r" (a), "+r" (c)\
1084 : "r" (y), "r" (b), "r" (d)\
1087 #define COPY3_IF_LT(x,y,a,b,c,d)\
1096 static inline long long rdtsc()
1099 asm volatile( "rdtsc\n\t"
1105 #define START_TIMER \
1106 static uint64_t tsum=0;\
1107 static int tcount=0;\
1108 static int tskip_count=0;\
1110 uint64_t tstart= rdtsc();\
1112 #define STOP_TIMER(id) \
1114 if(tcount<2 || tend - tstart < 4*tsum/tcount){\
1115 tsum+= tend - tstart;\
1119 if(256*256*256*64%(tcount+tskip_count)==0){\
1120 fprintf(stderr, "%Ld dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\
1124 #define CLAMP_TO_8BIT(d) ((d > 0xff) ? 0xff : (d < 0) ? 0 : d)
1126 /* avoid usage of various functions */
1127 #define malloc please_use_av_malloc
1128 #define free please_use_av_free
1129 #define realloc please_use_av_realloc
1131 #define CHECKED_ALLOCZ(p, size)\
1133 p= av_mallocz(size);\
1134 if(p==NULL && (size)!=0){\
1140 #endif /* HAVE_AV_CONFIG_H */
1142 #endif /* COMMON_H */