common.h
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上传日期:2021-12-09
资源大小:5084k
文件大小:33k
源码类别:
Audio
开发平台:
Visual C++
- /**
- * @file common.h
- * common internal api header.
- */
- #ifndef COMMON_H
- #define COMMON_H
- #if defined(WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
- # define CONFIG_WIN32
- #endif
- //#define ALT_BITSTREAM_WRITER
- //#define ALIGNED_BITSTREAM_WRITER
- #define ALT_BITSTREAM_READER
- //#define LIBMPEG2_BITSTREAM_READER
- //#define A32_BITSTREAM_READER
- #define LIBMPEG2_BITSTREAM_READER_HACK //add BERO
- #ifndef M_PI
- #define M_PI 3.14159265358979323846
- #endif
- #ifdef HAVE_AV_CONFIG_H
- /* only include the following when compiling package */
- # include "config.h"
- # include <stdlib.h>
- # include <stdio.h>
- # include <string.h>
- # include <ctype.h>
- # include <limits.h>
- # ifndef __BEOS__
- # include <errno.h>
- # else
- # include "berrno.h"
- # endif
- # include <math.h>
- # ifndef ENODATA
- # define ENODATA 61
- # endif
- #include <stddef.h>
- #ifndef offsetof
- # define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
- #endif
- #define AVOPTION_CODEC_BOOL(name, help, field)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_BOOL }
- #define AVOPTION_CODEC_DOUBLE(name, help, field, minv, maxv, defval)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_DOUBLE, minv, maxv, defval }
- #define AVOPTION_CODEC_FLAG(name, help, field, flag, defval)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_FLAG, flag, 0, defval }
- #define AVOPTION_CODEC_INT(name, help, field, minv, maxv, defval)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_INT, minv, maxv, defval }
- #define AVOPTION_CODEC_STRING(name, help, field, str, val)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_STRING, .defval = val, .defstr = str }
- #define AVOPTION_CODEC_RCOVERRIDE(name, help, field)
- { name, help, offsetof(AVCodecContext, field), FF_OPT_TYPE_RCOVERRIDE, .defval = 0, .defstr = NULL }
- #define AVOPTION_SUB(ptr) { .name = NULL, .help = (const char*)ptr }
- #define AVOPTION_END() AVOPTION_SUB(NULL)
- struct AVOption;
- #ifdef HAVE_MMX
- extern const struct AVOption avoptions_common[3 + 5];
- #else
- extern const struct AVOption avoptions_common[3];
- #endif
- extern const struct AVOption avoptions_workaround_bug[11];
- #endif /* HAVE_AV_CONFIG_H */
- /* Suppress restrict if it was not defined in config.h. */
- #ifndef restrict
- # define restrict
- #endif
- #ifndef always_inline
- #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
- # define always_inline __attribute__((always_inline)) inline
- #else
- # define always_inline inline
- #endif
- #endif
- #ifndef attribute_used
- #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
- # define attribute_used __attribute__((used))
- #else
- # define attribute_used
- #endif
- #endif
- #ifndef EMULATE_INTTYPES
- //# include <inttypes.h>
- # include "inttypes.h"
- #else
- typedef signed char int8_t;
- typedef signed short int16_t;
- typedef signed int int32_t;
- typedef unsigned char uint8_t;
- typedef unsigned short uint16_t;
- typedef unsigned int uint32_t;
- # ifdef CONFIG_WIN32
- typedef signed __int64 int64_t;
- typedef unsigned __int64 uint64_t;
- # else /* other OS */
- typedef signed long long int64_t;
- typedef unsigned long long uint64_t;
- # endif /* other OS */
- #endif /* HAVE_INTTYPES_H */
- /* buf and buf_end must be present and used by every alternative writer. */
- //typedef struct PutBitContext {
- //#ifdef ALT_BITSTREAM_WRITER
- // uint8_t *buf, *buf_end;
- // int index;
- //#else
- // uint32_t bit_buf;
- // int bit_left;
- // uint8_t *buf, *buf_ptr, *buf_end;
- //#endif
- //} PutBitContext;
- #ifndef INT64_MAX
- #define INT64_MAX int64_t_C(9223372036854775807)
- #endif
- #ifndef UINT64_MAX
- #define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF)
- #endif
- #ifdef EMULATE_FAST_INT
- /* note that we don't emulate 64bit ints */
- typedef signed char int_fast8_t;
- typedef signed int int_fast16_t;
- typedef signed int int_fast32_t;
- typedef unsigned char uint_fast8_t;
- typedef unsigned int uint_fast16_t;
- typedef unsigned int uint_fast32_t;
- #endif
- #ifndef INT_BIT
- # if INT_MAX != 2147483647
- # define INT_BIT 64
- # else
- # define INT_BIT 32
- # endif
- #endif
- #if defined(CONFIG_OS2) || defined(CONFIG_SUNOS)
- static inline float floorf(float f) {
- return floor(f);
- }
- #endif
- #ifdef CONFIG_WIN32
- /* windows */
- # if !defined(__MINGW32__) && !defined(__CYGWIN__)
- # define int64_t_C(c) (c ## i64)
- # define uint64_t_C(c) (c ## i64)
- # ifdef HAVE_AV_CONFIG_H
- # define inline __inline
- # endif
- # else
- # define int64_t_C(c) (c ## LL)
- # define uint64_t_C(c) (c ## ULL)
- # endif /* __MINGW32__ */
- # ifdef HAVE_AV_CONFIG_H
- # ifdef _DEBUG
- # define DEBUG
- # endif
- # define snprintf _snprintf
- # define vsnprintf _vsnprintf
- # endif
- /* CONFIG_WIN32 end */
- #elif defined (CONFIG_OS2)
- /* OS/2 EMX */
- #ifndef int64_t_C
- #define int64_t_C(c) (c ## LL)
- #define uint64_t_C(c) (c ## ULL)
- #endif
- #ifdef HAVE_AV_CONFIG_H
- #ifdef USE_FASTMEMCPY
- #include "fastmemcpy.h"
- #endif
- #include <float.h>
- #endif /* HAVE_AV_CONFIG_H */
- /* CONFIG_OS2 end */
- #else
- /* unix */
- #ifndef int64_t_C
- #define int64_t_C(c) (c ## LL)
- #define uint64_t_C(c) (c ## ULL)
- #endif
- #ifdef HAVE_AV_CONFIG_H
- # ifdef USE_FASTMEMCPY
- # include "fastmemcpy.h"
- # endif
- # endif /* HAVE_AV_CONFIG_H */
- #endif /* !CONFIG_WIN32 && !CONFIG_OS2 */
- #ifdef HAVE_AV_CONFIG_H
- # include "bswap.h"
- # if defined(__MINGW32__) || defined(__CYGWIN__) ||
- defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
- # define MANGLE(a) "_" #a
- # else
- # define MANGLE(a) #a
- # endif
- /* debug stuff */
- //DS by ty for comp. release on 20060516
- //# ifndef DEBUG
- //# define NDEBUG
- //# endif
- //DE by ty for comp. release on 20060516
- # include <assert.h>
- /* dprintf macros */
- # if defined(CONFIG_WIN32) && !defined(__MINGW32__) && !defined(__CYGWIN__)
- inline void dprintf(const char* fmt,...) {}
- # else
- # ifdef DEBUG
- # define dprintf(fmt,...) av_log(NULL, AV_LOG_DEBUG, fmt, __VA_ARGS__)
- # else
- # define dprintf(fmt,...)
- # endif
- # endif /* !CONFIG_WIN32 */
- # define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%dn", __FILE__, __LINE__); abort(); } while (0)
- //rounded divison & shift
- #define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
- /* assume b>0 */
- #define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
- #define ABS(a) ((a) >= 0 ? (a) : (-(a)))
- #define FFMAX(a,b) ((a) > (b) ? (a) : (b))
- #define FFMIN(a,b) ((a) > (b) ? (b) : (a))
- extern const uint32_t inverse[256];
- #ifdef ARCH_X86
- # define FASTDIV(a,b)
- ({
- int ret,dmy;
- asm volatile(
- "mull %3"
- :"=d"(ret),"=a"(dmy)
- :"1"(a),"g"(inverse[b])
- );
- ret;
- })
- #elif defined(CONFIG_FASTDIV)
- # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*inverse[b])>>32))
- #else
- # define FASTDIV(a,b) ((a)/(b))
- #endif
- #ifdef ARCH_X86
- // avoid +32 for shift optimization (gcc should do that ...)
- static inline int32_t NEG_SSR32( int32_t a, int8_t s){
- asm ("sarl %1, %0nt"
- : "+r" (a)
- : "ic" ((uint8_t)(-s))
- );
- return a;
- }
- static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
- asm ("shrl %1, %0nt"
- : "+r" (a)
- : "ic" ((uint8_t)(-s))
- );
- return a;
- }
- #else
- # define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
- # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
- #endif
- /* bit output */
- /* buf and buf_end must be present and used by every alternative writer. */
- typedef struct PutBitContext {
- #ifdef ALT_BITSTREAM_WRITER
- uint8_t *buf, *buf_end;
- int index;
- #else
- uint32_t bit_buf;
- int bit_left;
- uint8_t *buf, *buf_ptr, *buf_end;
- #endif
- } PutBitContext;
- static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
- {
- s->buf = buffer;
- s->buf_end = s->buf + buffer_size;
- #ifdef ALT_BITSTREAM_WRITER
- s->index=0;
- ((uint32_t*)(s->buf))[0]=0;
- // memset(buffer, 0, buffer_size);
- #else
- s->buf_ptr = s->buf;
- s->bit_left=32;
- s->bit_buf=0;
- #endif
- }
- /* return the number of bits output */
- static inline int put_bits_count(PutBitContext *s)
- {
- #ifdef ALT_BITSTREAM_WRITER
- return s->index;
- #else
- return (s->buf_ptr - s->buf) * 8 + 32 - s->bit_left;
- #endif
- }
- /* pad the end of the output stream with zeros */
- static inline void flush_put_bits(PutBitContext *s)
- {
- #ifdef ALT_BITSTREAM_WRITER
- align_put_bits(s);
- #else
- s->bit_buf<<= s->bit_left;
- while (s->bit_left < 32) {
- /* XXX: should test end of buffer */
- *s->buf_ptr++=s->bit_buf >> 24;
- s->bit_buf<<=8;
- s->bit_left+=8;
- }
- s->bit_left=32;
- s->bit_buf=0;
- #endif
- }
- void align_put_bits(PutBitContext *s);
- void put_string(PutBitContext * pbc, char *s, int put_zero);
- /* bit input */
- /* buffer, buffer_end and size_in_bits must be present and used by every reader */
- typedef struct GetBitContext {
- const uint8_t *buffer, *buffer_end;
- #ifdef ALT_BITSTREAM_READER
- int index;
- #elif defined LIBMPEG2_BITSTREAM_READER
- uint8_t *buffer_ptr;
- uint32_t cache;
- int bit_count;
- #elif defined A32_BITSTREAM_READER
- uint32_t *buffer_ptr;
- uint32_t cache0;
- uint32_t cache1;
- int bit_count;
- #endif
- int size_in_bits;
- } GetBitContext;
- #define VLC_TYPE int16_t
- typedef struct VLC {
- int bits;
- VLC_TYPE (*table)[2]; ///< code, bits
- int table_size, table_allocated;
- } VLC;
- typedef struct RL_VLC_ELEM {
- int16_t level;
- int8_t len;
- uint8_t run;
- } RL_VLC_ELEM;
- #ifdef ARCH_SPARC
- #define UNALIGNED_STORES_ARE_BAD
- #endif
- /* used to avoid missaligned exceptions on some archs (alpha, ...) */
- #ifdef ARCH_X86
- # define unaligned32(a) (*(uint32_t*)(a))
- #else
- # ifdef __GNUC__
- static inline uint32_t unaligned32(const void *v) {
- struct Unaligned {
- uint32_t i;
- } __attribute__((packed));
- return ((const struct Unaligned *) v)->i;
- }
- # elif defined(__DECC)
- static inline uint32_t unaligned32(const void *v) {
- return *(const __unaligned uint32_t *) v;
- }
- # else
- static inline uint32_t unaligned32(const void *v) {
- return *(const uint32_t *) v;
- }
- # endif
- #endif //!ARCH_X86
- #ifndef ALT_BITSTREAM_WRITER
- static inline void put_bits(PutBitContext *s, int n, unsigned int value)
- {
- unsigned int bit_buf;
- int bit_left;
- #ifdef STATS
- st_out_bit_counts[st_current_index] += n;
- #endif
- // printf("put_bits=%d %xn", n, value);
- assert(n == 32 || value < (1U << n));
- bit_buf = s->bit_buf;
- bit_left = s->bit_left;
- // printf("n=%d value=%x cnt=%d buf=%xn", n, value, bit_cnt, bit_buf);
- /* XXX: optimize */
- if (n < bit_left) {
- bit_buf = (bit_buf<<n) | value;
- bit_left-=n;
- } else {
- bit_buf<<=bit_left;
- bit_buf |= value >> (n - bit_left);
- #ifdef UNALIGNED_STORES_ARE_BAD
- if (3 & (intptr_t) s->buf_ptr) {
- s->buf_ptr[0] = bit_buf >> 24;
- s->buf_ptr[1] = bit_buf >> 16;
- s->buf_ptr[2] = bit_buf >> 8;
- s->buf_ptr[3] = bit_buf ;
- } else
- #endif
- *(uint32_t *)s->buf_ptr = be2me_32(bit_buf);
- //printf("bitbuf = %08xn", bit_buf);
- s->buf_ptr+=4;
- bit_left+=32 - n;
- bit_buf = value;
- }
- s->bit_buf = bit_buf;
- s->bit_left = bit_left;
- }
- #endif
- #ifdef ALT_BITSTREAM_WRITER
- static inline void put_bits(PutBitContext *s, int n, unsigned int value)
- {
- # ifdef ALIGNED_BITSTREAM_WRITER
- # ifdef ARCH_X86
- asm volatile(
- "movl %0, %%ecx nt"
- "xorl %%eax, %%eax nt"
- "shrdl %%cl, %1, %%eax nt"
- "shrl %%cl, %1 nt"
- "movl %0, %%ecx nt"
- "shrl $3, %%ecx nt"
- "andl $0xFFFFFFFC, %%ecx nt"
- "bswapl %1 nt"
- "orl %1, (%2, %%ecx) nt"
- "bswapl %%eax nt"
- "addl %3, %0 nt"
- "movl %%eax, 4(%2, %%ecx) nt"
- : "=&r" (s->index), "=&r" (value)
- : "r" (s->buf), "r" (n), "0" (s->index), "1" (value<<(-n))
- : "%eax", "%ecx"
- );
- # else
- int index= s->index;
- uint32_t *ptr= ((uint32_t *)s->buf)+(index>>5);
- value<<= 32-n;
- ptr[0] |= be2me_32(value>>(index&31));
- ptr[1] = be2me_32(value<<(32-(index&31)));
- //if(n>24) printf("%d %dn", n, value);
- index+= n;
- s->index= index;
- # endif
- # else //ALIGNED_BITSTREAM_WRITER
- # ifdef ARCH_X86
- asm volatile(
- "movl $7, %%ecx nt"
- "andl %0, %%ecx nt"
- "addl %3, %%ecx nt"
- "negl %%ecx nt"
- "shll %%cl, %1 nt"
- "bswapl %1 nt"
- "movl %0, %%ecx nt"
- "shrl $3, %%ecx nt"
- "orl %1, (%%ecx, %2) nt"
- "addl %3, %0 nt"
- "movl $0, 4(%%ecx, %2) nt"
- : "=&r" (s->index), "=&r" (value)
- : "r" (s->buf), "r" (n), "0" (s->index), "1" (value)
- : "%ecx"
- );
- # else
- int index= s->index;
- uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3));
- ptr[0] |= be2me_32(value<<(32-n-(index&7) ));
- ptr[1] = 0;
- //if(n>24) printf("%d %dn", n, value);
- index+= n;
- s->index= index;
- # endif
- # endif //!ALIGNED_BITSTREAM_WRITER
- }
- #endif
- static inline uint8_t* pbBufPtr(PutBitContext *s)
- {
- #ifdef ALT_BITSTREAM_WRITER
- return s->buf + (s->index>>3);
- #else
- return s->buf_ptr;
- #endif
- }
- /**
- *
- * PutBitContext must be flushed & aligned to a byte boundary before calling this.
- */
- static inline void skip_put_bytes(PutBitContext *s, int n){
- assert((put_bits_count(s)&7)==0);
- #ifdef ALT_BITSTREAM_WRITER
- FIXME may need some cleaning of the buffer
- s->index += n<<3;
- #else
- assert(s->bit_left==32);
- s->buf_ptr += n;
- #endif
- }
- /**
- * Changes the end of the buffer.
- */
- static inline void set_put_bits_buffer_size(PutBitContext *s, int size){
- s->buf_end= s->buf + size;
- }
- /* Bitstream reader API docs:
- name
- abritary name which is used as prefix for the internal variables
- gb
- getbitcontext
- OPEN_READER(name, gb)
- loads gb into local variables
- CLOSE_READER(name, gb)
- stores local vars in gb
- UPDATE_CACHE(name, gb)
- refills the internal cache from the bitstream
- after this call at least MIN_CACHE_BITS will be available,
- GET_CACHE(name, gb)
- will output the contents of the internal cache, next bit is MSB of 32 or 64 bit (FIXME 64bit)
- SHOW_UBITS(name, gb, num)
- will return the nest num bits
- SHOW_SBITS(name, gb, num)
- will return the nest num bits and do sign extension
- SKIP_BITS(name, gb, num)
- will skip over the next num bits
- note, this is equinvalent to SKIP_CACHE; SKIP_COUNTER
- SKIP_CACHE(name, gb, num)
- will remove the next num bits from the cache (note SKIP_COUNTER MUST be called before UPDATE_CACHE / CLOSE_READER)
- SKIP_COUNTER(name, gb, num)
- will increment the internal bit counter (see SKIP_CACHE & SKIP_BITS)
- LAST_SKIP_CACHE(name, gb, num)
- will remove the next num bits from the cache if it is needed for UPDATE_CACHE otherwise it will do nothing
- LAST_SKIP_BITS(name, gb, num)
- is equinvalent to SKIP_LAST_CACHE; SKIP_COUNTER
- for examples see get_bits, show_bits, skip_bits, get_vlc
- */
- static inline int unaligned32_be(const void *v)
- {
- #ifdef CONFIG_ALIGN
- const uint8_t *p=v;
- return (((p[0]<<8) | p[1])<<16) | (p[2]<<8) | (p[3]);
- #else
- return be2me_32( unaligned32(v)); //original
- #endif
- }
- #ifdef ALT_BITSTREAM_READER
- # define MIN_CACHE_BITS 25
- # define OPEN_READER(name, gb)
- int name##_index= (gb)->index;
- int name##_cache= 0;
- # define CLOSE_READER(name, gb)
- (gb)->index= name##_index;
- # define UPDATE_CACHE(name, gb)
- name##_cache= unaligned32_be( ((uint8_t *)(gb)->buffer)+(name##_index>>3) ) << (name##_index&0x07);
- # define SKIP_CACHE(name, gb, num)
- name##_cache <<= (num);
- // FIXME name?
- # define SKIP_COUNTER(name, gb, num)
- name##_index += (num);
- # define SKIP_BITS(name, gb, num)
- {
- SKIP_CACHE(name, gb, num)
- SKIP_COUNTER(name, gb, num)
- }
- # define LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)
- # define LAST_SKIP_CACHE(name, gb, num) ;
- # define SHOW_UBITS(name, gb, num)
- NEG_USR32(name##_cache, num)
- # define SHOW_SBITS(name, gb, num)
- NEG_SSR32(name##_cache, num)
- # define GET_CACHE(name, gb)
- ((uint32_t)name##_cache)
- static inline int get_bits_count(GetBitContext *s){
- return s->index;
- }
- #elif defined LIBMPEG2_BITSTREAM_READER
- //libmpeg2 like reader
- # define MIN_CACHE_BITS 17
- # define OPEN_READER(name, gb)
- int name##_bit_count=(gb)->bit_count;
- int name##_cache= (gb)->cache;
- uint8_t * name##_buffer_ptr=(gb)->buffer_ptr;
- # define CLOSE_READER(name, gb)
- (gb)->bit_count= name##_bit_count;
- (gb)->cache= name##_cache;
- (gb)->buffer_ptr= name##_buffer_ptr;
- #ifdef LIBMPEG2_BITSTREAM_READER_HACK
- # define UPDATE_CACHE(name, gb)
- if(name##_bit_count >= 0){
- name##_cache+= (int)be2me_16(*(uint16_t*)name##_buffer_ptr) << name##_bit_count;
- ((uint16_t*)name##_buffer_ptr)++;
- name##_bit_count-= 16;
- }
- #else
- # define UPDATE_CACHE(name, gb)
- if(name##_bit_count >= 0){
- name##_cache+= ((name##_buffer_ptr[0]<<8) + name##_buffer_ptr[1]) << name##_bit_count;
- name##_buffer_ptr+=2;
- name##_bit_count-= 16;
- }
- #endif
- # define SKIP_CACHE(name, gb, num)
- name##_cache <<= (num);
- # define SKIP_COUNTER(name, gb, num)
- name##_bit_count += (num);
- # define SKIP_BITS(name, gb, num)
- {
- SKIP_CACHE(name, gb, num)
- SKIP_COUNTER(name, gb, num)
- }
- # define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
- # define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
- # define SHOW_UBITS(name, gb, num)
- NEG_USR32(name##_cache, num)
- # define SHOW_SBITS(name, gb, num)
- NEG_SSR32(name##_cache, num)
- # define GET_CACHE(name, gb)
- ((uint32_t)name##_cache)
- static inline int get_bits_count(GetBitContext *s){
- return (s->buffer_ptr - s->buffer)*8 - 16 + s->bit_count;
- }
- #elif defined A32_BITSTREAM_READER
- # define MIN_CACHE_BITS 32
- # define OPEN_READER(name, gb)
- int name##_bit_count=(gb)->bit_count;
- uint32_t name##_cache0= (gb)->cache0;
- uint32_t name##_cache1= (gb)->cache1;
- uint32_t * name##_buffer_ptr=(gb)->buffer_ptr;
- # define CLOSE_READER(name, gb)
- (gb)->bit_count= name##_bit_count;
- (gb)->cache0= name##_cache0;
- (gb)->cache1= name##_cache1;
- (gb)->buffer_ptr= name##_buffer_ptr;
- # define UPDATE_CACHE(name, gb)
- if(name##_bit_count > 0){
- const uint32_t next= be2me_32( *name##_buffer_ptr );
- name##_cache0 |= NEG_USR32(next,name##_bit_count);
- name##_cache1 |= next<<name##_bit_count;
- name##_buffer_ptr++;
- name##_bit_count-= 32;
- }
- #ifdef ARCH_X86
- # define SKIP_CACHE(name, gb, num)
- asm(
- "shldl %2, %1, %0 nt"
- "shll %2, %1 nt"
- : "+r" (name##_cache0), "+r" (name##_cache1)
- : "Ic" ((uint8_t)num)
- );
- #else
- # define SKIP_CACHE(name, gb, num)
- name##_cache0 <<= (num);
- name##_cache0 |= NEG_USR32(name##_cache1,num);
- name##_cache1 <<= (num);
- #endif
- # define SKIP_COUNTER(name, gb, num)
- name##_bit_count += (num);
- # define SKIP_BITS(name, gb, num)
- {
- SKIP_CACHE(name, gb, num)
- SKIP_COUNTER(name, gb, num)
- }
- # define LAST_SKIP_BITS(name, gb, num) SKIP_BITS(name, gb, num)
- # define LAST_SKIP_CACHE(name, gb, num) SKIP_CACHE(name, gb, num)
- # define SHOW_UBITS(name, gb, num)
- NEG_USR32(name##_cache0, num)
- # define SHOW_SBITS(name, gb, num)
- NEG_SSR32(name##_cache0, num)
- # define GET_CACHE(name, gb)
- (name##_cache0)
- static inline int get_bits_count(GetBitContext *s){
- return ((uint8_t*)s->buffer_ptr - s->buffer)*8 - 32 + s->bit_count;
- }
- #endif
- /**
- * read mpeg1 dc style vlc (sign bit + mantisse with no MSB).
- * if MSB not set it is negative
- * @param n length in bits
- * @author BERO
- */
- static inline int get_xbits(GetBitContext *s, int n){
- register int tmp;
- register int32_t cache;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- cache = GET_CACHE(re,s);
- if ((int32_t)cache<0) { //MSB=1
- tmp = NEG_USR32(cache,n);
- } else {
- // tmp = (-1<<n) | NEG_USR32(cache,n) + 1; mpeg12.c algo
- // tmp = - (NEG_USR32(cache,n) ^ ((1 << n) - 1)); h263.c algo
- tmp = - NEG_USR32(~cache,n);
- }
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return tmp;
- }
- static inline int get_sbits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_SBITS(re, s, n);
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return tmp;
- }
- /**
- * reads 0-17 bits.
- * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
- */
- static inline unsigned int get_bits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_UBITS(re, s, n);
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- return tmp;
- }
- unsigned int get_bits_long(GetBitContext *s, int n);
- /**
- * shows 0-17 bits.
- * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
- */
- static inline unsigned int show_bits(GetBitContext *s, int n){
- register int tmp;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- tmp= SHOW_UBITS(re, s, n);
- // CLOSE_READER(re, s)
- return tmp;
- }
- unsigned int show_bits_long(GetBitContext *s, int n);
- static inline void skip_bits(GetBitContext *s, int n){
- //Note gcc seems to optimize this to s->index+=n for the ALT_READER :))
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- LAST_SKIP_BITS(re, s, n)
- CLOSE_READER(re, s)
- }
- static inline unsigned int get_bits1(GetBitContext *s){
- #ifdef ALT_BITSTREAM_READER
- int index= s->index;
- uint8_t result= s->buffer[ index>>3 ];
- result<<= (index&0x07);
- result>>= 8 - 1;
- index++;
- s->index= index;
- return result;
- #else
- return get_bits(s, 1);
- #endif
- }
- static inline unsigned int show_bits1(GetBitContext *s){
- return show_bits(s, 1);
- }
- static inline void skip_bits1(GetBitContext *s){
- skip_bits(s, 1);
- }
- /**
- * init GetBitContext.
- * @param buffer bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then the actual read bits
- * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
- * @param bit_size the size of the buffer in bits
- */
- static inline void init_get_bits(GetBitContext *s,
- const uint8_t *buffer, int bit_size)
- {
- const int buffer_size= (bit_size+7)>>3;
- s->buffer= buffer;
- s->size_in_bits= bit_size;
- s->buffer_end= buffer + buffer_size;
- #ifdef ALT_BITSTREAM_READER
- s->index=0;
- #elif defined LIBMPEG2_BITSTREAM_READER
- #ifdef LIBMPEG2_BITSTREAM_READER_HACK
- if ((int)buffer&1) {
- /* word alignment */
- s->cache = (*buffer++)<<24;
- s->buffer_ptr = buffer;
- s->bit_count = 16-8;
- } else
- #endif
- {
- s->buffer_ptr = buffer;
- s->bit_count = 16;
- s->cache = 0;
- }
- #elif defined A32_BITSTREAM_READER
- s->buffer_ptr = (uint32_t*)buffer;
- s->bit_count = 32;
- s->cache0 = 0;
- s->cache1 = 0;
- #endif
- {
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- UPDATE_CACHE(re, s)
- CLOSE_READER(re, s)
- }
- #ifdef A32_BITSTREAM_READER
- s->cache1 = 0;
- #endif
- }
- int check_marker(GetBitContext *s, const char *msg);
- void align_get_bits(GetBitContext *s);
- int init_vlc(VLC *vlc, int nb_bits, int nb_codes,
- const void *bits, int bits_wrap, int bits_size,
- const void *codes, int codes_wrap, int codes_size);
- void free_vlc(VLC *vlc);
- /**
- *
- * if the vlc code is invalid and max_depth=1 than no bits will be removed
- * if the vlc code is invalid and max_depth>1 than the number of bits removed
- * is undefined
- */
- #define GET_VLC(code, name, gb, table, bits, max_depth)
- {
- int n, index, nb_bits;
- index= SHOW_UBITS(name, gb, bits);
- code = table[index][0];
- n = table[index][1];
- if(max_depth > 1 && n < 0){
- LAST_SKIP_BITS(name, gb, bits)
- UPDATE_CACHE(name, gb)
- nb_bits = -n;
- index= SHOW_UBITS(name, gb, nb_bits) + code;
- code = table[index][0];
- n = table[index][1];
- if(max_depth > 2 && n < 0){
- LAST_SKIP_BITS(name, gb, nb_bits)
- UPDATE_CACHE(name, gb)
- nb_bits = -n;
- index= SHOW_UBITS(name, gb, nb_bits) + code;
- code = table[index][0];
- n = table[index][1];
- }
- }
- SKIP_BITS(name, gb, n)
- }
- #define GET_RL_VLC(level, run, name, gb, table, bits, max_depth)
- {
- int n, index, nb_bits;
- index= SHOW_UBITS(name, gb, bits);
- level = table[index].level;
- n = table[index].len;
- if(max_depth > 1 && n < 0){
- LAST_SKIP_BITS(name, gb, bits)
- UPDATE_CACHE(name, gb)
- nb_bits = -n;
- index= SHOW_UBITS(name, gb, nb_bits) + level;
- level = table[index].level;
- n = table[index].len;
- }
- run= table[index].run;
- SKIP_BITS(name, gb, n)
- }
- // deprecated, dont use get_vlc for new code, use get_vlc2 instead or use GET_VLC directly
- static inline int get_vlc(GetBitContext *s, VLC *vlc)
- {
- int code;
- VLC_TYPE (*table)[2]= vlc->table;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- GET_VLC(code, re, s, table, vlc->bits, 3)
- CLOSE_READER(re, s)
- return code;
- }
- /**
- * parses a vlc code, faster then get_vlc()
- * @param bits is the number of bits which will be read at once, must be
- * identical to nb_bits in init_vlc()
- * @param max_depth is the number of times bits bits must be readed to completly
- * read the longest vlc code
- * = (max_vlc_length + bits - 1) / bits
- */
- static always_inline int get_vlc2(GetBitContext *s, VLC_TYPE (*table)[2],
- int bits, int max_depth)
- {
- int code;
- OPEN_READER(re, s)
- UPDATE_CACHE(re, s)
- GET_VLC(code, re, s, table, bits, max_depth)
- CLOSE_READER(re, s)
- return code;
- }
- //#define TRACE
- #ifdef TRACE
- static inline void print_bin(int bits, int n){
- int i;
- for(i=n-1; i>=0; i--){
- printf("%d", (bits>>i)&1);
- }
- for(i=n; i<24; i++)
- printf(" ");
- }
- static inline int get_bits_trace(GetBitContext *s, int n, char *file, char *func, int line){
- int r= get_bits(s, n);
- print_bin(r, n);
- printf("%5d %2d %3d bit @%5d in %s %s:%dn", r, n, r, get_bits_count(s)-n, file, func, line);
- return r;
- }
- static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, char *func, int line){
- int show= show_bits(s, 24);
- int pos= get_bits_count(s);
- int r= get_vlc2(s, table, bits, max_depth);
- int len= get_bits_count(s) - pos;
- int bits2= show>>(24-len);
- print_bin(bits2, len);
- printf("%5d %2d %3d vlc @%5d in %s %s:%dn", bits2, len, r, pos, file, func, line);
- return r;
- }
- static inline int get_xbits_trace(GetBitContext *s, int n, char *file, char *func, int line){
- int show= show_bits(s, n);
- int r= get_xbits(s, n);
- print_bin(show, n);
- printf("%5d %2d %3d xbt @%5d in %s %s:%dn", show, n, r, get_bits_count(s)-n, file, func, line);
- return r;
- }
- #define get_bits(s, n) get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
- #define get_bits1(s) get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
- #define get_xbits(s, n) get_xbits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
- #define get_vlc(s, vlc) get_vlc_trace(s, (vlc)->table, (vlc)->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
- #define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
- #define tprintf(...) av_log(NULL, AV_LOG_DEBUG, __VA_ARGS__)
- #else //TRACE
- //#define tprintf(...) {} //Del by ty
- #define tprintf( ) {} //Del by ty
- #endif
- /* define it to include statistics code (useful only for optimizing
- codec efficiency */
- //#define STATS
- #ifdef STATS
- enum {
- ST_UNKNOWN,
- ST_DC,
- ST_INTRA_AC,
- ST_INTER_AC,
- ST_INTRA_MB,
- ST_INTER_MB,
- ST_MV,
- ST_NB,
- };
- extern int st_current_index;
- extern unsigned int st_bit_counts[ST_NB];
- extern unsigned int st_out_bit_counts[ST_NB];
- void print_stats(void);
- #endif
- /* misc math functions */
- extern const uint8_t ff_log2_tab[256];
- static inline int av_log2(unsigned int v)
- {
- int n;
- n = 0;
- if (v & 0xffff0000) {
- v >>= 16;
- n += 16;
- }
- if (v & 0xff00) {
- v >>= 8;
- n += 8;
- }
- n += ff_log2_tab[v];
- return n;
- }
- static inline int av_log2_16bit(unsigned int v)
- {
- int n;
- n = 0;
- if (v & 0xff00) {
- v >>= 8;
- n += 8;
- }
- n += ff_log2_tab[v];
- return n;
- }
- /* median of 3 */
- static inline int mid_pred(int a, int b, int c)
- {
- #if 0
- int t= (a-b)&((a-b)>>31);
- a-=t;
- b+=t;
- b-= (b-c)&((b-c)>>31);
- b+= (a-b)&((a-b)>>31);
- return b;
- #else
- if(a>b){
- if(c>b){
- if(c>a) b=a;
- else b=c;
- }
- }else{
- if(b>c){
- if(c>a) b=c;
- else b=a;
- }
- }
- return b;
- #endif
- }
- static inline int clip(int a, int amin, int amax)
- {
- if (a < amin)
- return amin;
- else if (a > amax)
- return amax;
- else
- return a;
- }
- static inline int clip_uint8(int a)
- {
- if (a&(~255)) return (-a)>>31;
- else return a;
- }
- /* math */
- extern const uint8_t ff_sqrt_tab[128];
- int64_t ff_gcd(int64_t a, int64_t b);
- static inline int ff_sqrt(int a)
- {
- int ret=0;
- int s;
- int ret_sq=0;
- if(a<128) return ff_sqrt_tab[a];
- for(s=15; s>=0; s--){
- int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
- if(b<=a){
- ret_sq=b;
- ret+= 1<<s;
- }
- }
- return ret;
- }
- /**
- * converts fourcc string to int
- */
- static inline int ff_get_fourcc(const char *s){
- assert( strlen(s)==4 );
- return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
- }
- #define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
- #define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
- #ifdef ARCH_X86
- #define MASK_ABS(mask, level)
- asm volatile(
- "cdq nt"
- "xorl %1, %0 nt"
- "subl %1, %0 nt"
- : "+a" (level), "=&d" (mask)
- );
- #else
- #define MASK_ABS(mask, level)
- mask= level>>31;
- level= (level^mask)-mask;
- #endif
- #if __CPU__ >= 686 && !defined(RUNTIME_CPUDETECT)
- #define COPY3_IF_LT(x,y,a,b,c,d)
- asm volatile (
- "cmpl %0, %3 nt"
- "cmovl %3, %0 nt"
- "cmovl %4, %1 nt"
- "cmovl %5, %2 nt"
- : "+r" (x), "+r" (a), "+r" (c)
- : "r" (y), "r" (b), "r" (d)
- );
- #else
- #define COPY3_IF_LT(x,y,a,b,c,d)
- if((y)<(x)){
- (x)=(y);
- (a)=(b);
- (c)=(d);
- }
- #endif
- #ifdef ARCH_X86
- static inline long long rdtsc()
- {
- long long l;
- asm volatile( "rdtscnt"
- : "=A" (l)
- );
- return l;
- }
- #define START_TIMER
- uint64_t tend;
- uint64_t tstart= rdtsc();
- #define STOP_TIMER(id)
- tend= rdtsc();
- {
- static uint64_t tsum=0;
- static int tcount=0;
- static int tskip_count=0;
- if(tcount<2 || tend - tstart < 8*tsum/tcount){
- tsum+= tend - tstart;
- tcount++;
- }else
- tskip_count++;
- if(256*256*256*64%(tcount+tskip_count)==0){
- av_log(NULL, AV_LOG_DEBUG, "%Ld dezicycles in %s, %d runs, %d skipsn", tsum*10/tcount, id, tcount, tskip_count);
- }
- }
- #endif
- #define CLAMP_TO_8BIT(d) ((d > 0xff) ? 0xff : (d < 0) ? 0 : d)
- /* avoid usage of various functions */
- #define malloc please_use_av_malloc
- //#define free please_use_av_free
- #define realloc please_use_av_realloc
- #define time time_is_forbidden_due_to_security_issues
- //#define rand rand_is_forbidden_due_to_state_trashing //Del by ty
- #define srand srand_is_forbidden_due_to_state_trashing
- #if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
- //#define printf please_use_av_log //Del by ty
- //#define fprintf please_use_av_log //Del by ty
- #endif
- #define CHECKED_ALLOCZ(p, size)
- {
- p= av_mallocz(size);
- if(p==NULL && (size)!=0){
- perror("malloc");
- goto fail;
- }
- }
- #endif /* HAVE_AV_CONFIG_H */
- #endif /* COMMON_H */