#ifndef COMMON_H
#define COMMON_H
+#define FFMPEG_VERSION_INT 0x000406
+#define FFMPEG_VERSION "0.4.6"
+
+#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
+
#ifdef HAVE_AV_CONFIG_H
-#include "../config.h"
+/* only include the following when compiling package */
+# include "config.h"
+
+# include <stdlib.h>
+# include <stdio.h>
+# include <string.h>
+# ifndef __BEOS__
+# include <errno.h>
+# else
+# include "berrno.h"
+# endif
+# include <math.h>
+
+# ifndef ENODATA
+# define ENODATA 61
+# endif
+
+#endif /* HAVE_AV_CONFIG_H */
+
+/* Suppress restrict if it was not defined in config.h. */
+#ifndef restrict
+# define restrict
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
+# define always_inline __attribute__((always_inline)) inline
+#else
+# define always_inline inline
#endif
-#ifndef __WINE_WINDEF16_H
+#ifdef CONFIG_WIN32
+
+/* windows */
+
+typedef unsigned short UINT16;
+typedef signed short INT16;
+typedef unsigned char UINT8;
+typedef unsigned int UINT32;
+typedef unsigned __int64 UINT64;
+typedef signed char INT8;
+typedef signed int INT32;
+typedef signed __int64 INT64;
+
+typedef UINT8 uint8_t;
+typedef INT8 int8_t;
+typedef UINT16 uint16_t;
+typedef INT16 int16_t;
+typedef UINT32 uint32_t;
+typedef INT32 int32_t;
+typedef UINT64 uint64_t;
+typedef INT64 int64_t;
+
+# ifndef __MINGW32__
+# define INT64_C(c) (c ## i64)
+# define UINT64_C(c) (c ## i64)
+
+# define inline __inline
+
+# else
+# define INT64_C(c) (c ## LL)
+# define UINT64_C(c) (c ## ULL)
+# endif /* __MINGW32__ */
+
+# define M_PI 3.14159265358979323846
+# define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+
+# ifdef _DEBUG
+# define DEBUG
+# endif
+
+# define snprintf _snprintf
+
+#else /* CONFIG_WIN32 */
+
+/* unix */
+
+# include <inttypes.h>
+
+# ifndef __WINE_WINDEF16_H
/* workaround for typedef conflict in MPlayer (wine typedefs) */
typedef unsigned short UINT16;
typedef signed short INT16;
-#endif
+# endif
typedef unsigned char UINT8;
typedef unsigned int UINT32;
typedef signed int INT32;
typedef signed long long INT64;
+# ifdef HAVE_AV_CONFIG_H
+
+# ifndef INT64_C
+# define INT64_C(c) (c ## LL)
+# define UINT64_C(c) (c ## ULL)
+# endif
+
+# ifdef USE_FASTMEMCPY
+# include "fastmemcpy.h"
+# endif
+
+# endif /* HAVE_AV_CONFIG_H */
+
+#endif /* !CONFIG_WIN32 */
+
+#ifdef HAVE_AV_CONFIG_H
+
+# include "bswap.h"
+
+# if defined(__MINGW32__) || defined(__CYGWIN__) || \
+ defined(__OS2__) || defined (__OpenBSD__)
+# define MANGLE(a) "_" #a
+# else
+# define MANGLE(a) #a
+# endif
+
+/* debug stuff */
+
+# ifndef DEBUG
+# define NDEBUG
+# endif
+# include <assert.h>
+
+/* dprintf macros */
+# if defined(CONFIG_WIN32) && !defined(__MINGW32__)
+
+inline void dprintf(const char* fmt,...) {}
+
+# else
+
+# ifdef DEBUG
+# define dprintf(fmt,args...) printf(fmt, ## args)
+# else
+# define dprintf(fmt,args...)
+# endif
+
+# endif /* !CONFIG_WIN32 */
+
+# define av_abort() do { fprintf(stderr, "Abort at %s:%d\n", __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)))
+
+#ifndef MAX
+# define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef MIN
+# define MIN(a,b) ((a) > (b) ? (b) : (a))
+#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, %0\n\t"
+ : "+r" (a)
+ : "ic" ((uint8_t)(-s))
+ );
+ return a;
+}
+static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
+ asm ("shrl %1, %0\n\t"
+ : "+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 */
struct PutBitContext;
typedef void (*WriteDataFunc)(void *, UINT8 *, int);
typedef struct PutBitContext {
+#ifdef ALT_BITSTREAM_WRITER
+ UINT8 *buf, *buf_end;
+ int index;
+#else
UINT32 bit_buf;
- int bit_cnt;
+ int bit_left;
UINT8 *buf, *buf_ptr, *buf_end;
- long long data_out_size; /* in bytes */
- void *opaque;
- WriteDataFunc write_data;
+#endif
+ INT64 data_out_size; /* in bytes */
} PutBitContext;
void init_put_bits(PutBitContext *s,
UINT8 *buffer, int buffer_size,
void *opaque,
void (*write_data)(void *, UINT8 *, int));
-void put_bits(PutBitContext *s, int n, unsigned int value);
-long long get_bit_count(PutBitContext *s);
+
+INT64 get_bit_count(PutBitContext *s); /* XXX: change function name */
void align_put_bits(PutBitContext *s);
void flush_put_bits(PutBitContext *s);
+void put_string(PutBitContext * pbc, char *s);
/* jpeg specific put_bits */
-void jput_bits(PutBitContext *s, int n, unsigned int value);
void jflush_put_bits(PutBitContext *s);
/* bit input */
typedef struct GetBitContext {
- UINT32 bit_buf;
- int bit_cnt;
- UINT8 *buf, *buf_ptr, *buf_end;
+ UINT8 *buffer, *buffer_end;
+#ifdef ALT_BITSTREAM_READER
+ int index;
+#elif defined LIBMPEG2_BITSTREAM_READER
+ UINT8 *buffer_ptr;
+ UINT32 cache;
+ int bit_count;
+#elif defined A32_BITSTREAM_READER
+ UINT32 *buffer_ptr;
+ UINT32 cache0;
+ UINT32 cache1;
+ int bit_count;
+#endif
+ int size;
} GetBitContext;
+static inline int get_bits_count(GetBitContext *s);
+
+#define VLC_TYPE INT16
+
typedef struct VLC {
int bits;
- INT16 *table_codes;
- INT8 *table_bits;
+ VLC_TYPE (*table)[2]; // code, bits
int table_size, table_allocated;
} VLC;
-void init_get_bits(GetBitContext *s,
- UINT8 *buffer, int buffer_size);
+typedef struct RL_VLC_ELEM {
+ int16_t level;
+ int8_t len;
+ uint8_t run;
+} RL_VLC_ELEM;
-unsigned int get_bits_long(GetBitContext *s, int n);
+/* used to avoid missaligned exceptions on some archs (alpha, ...) */
+#ifdef ARCH_X86
+# define unaligned32(a) (*(UINT32*)(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;
-static inline unsigned int get_bits(GetBitContext *s, int n){
- if(s->bit_cnt>=n){
- /* most common case here */
- unsigned int val = s->bit_buf >> (32 - n);
- s->bit_buf <<= n;
- s->bit_cnt -= n;
#ifdef STATS
- st_bit_counts[st_current_index] += n;
+ st_out_bit_counts[st_current_index] += n;
#endif
- return val;
+ // printf("put_bits=%d %x\n", 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=%x\n", 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);
+ *(UINT32 *)s->buf_ptr = be2me_32(bit_buf);
+ //printf("bitbuf = %08x\n", bit_buf);
+ s->buf_ptr+=4;
+ bit_left+=32 - n;
+ bit_buf = value;
}
- return get_bits_long(s,n);
+
+ 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 \n\t"
+ "xorl %%eax, %%eax \n\t"
+ "shrdl %%cl, %1, %%eax \n\t"
+ "shrl %%cl, %1 \n\t"
+ "movl %0, %%ecx \n\t"
+ "shrl $3, %%ecx \n\t"
+ "andl $0xFFFFFFFC, %%ecx \n\t"
+ "bswapl %1 \n\t"
+ "orl %1, (%2, %%ecx) \n\t"
+ "bswapl %%eax \n\t"
+ "addl %3, %0 \n\t"
+ "movl %%eax, 4(%2, %%ecx) \n\t"
+ : "=&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 %d\n", n, value);
+ index+= n;
+ s->index= index;
+# endif
+# else //ALIGNED_BITSTREAM_WRITER
+# ifdef ARCH_X86
+ asm volatile(
+ "movl $7, %%ecx \n\t"
+ "andl %0, %%ecx \n\t"
+ "addl %3, %%ecx \n\t"
+ "negl %%ecx \n\t"
+ "shll %%cl, %1 \n\t"
+ "bswapl %1 \n\t"
+ "movl %0, %%ecx \n\t"
+ "shrl $3, %%ecx \n\t"
+ "orl %1, (%%ecx, %2) \n\t"
+ "addl %3, %0 \n\t"
+ "movl $0, 4(%%ecx, %2) \n\t"
+ : "=&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 %d\n", n, value);
+ index+= n;
+ s->index= index;
+# endif
+# endif //!ALIGNED_BITSTREAM_WRITER
+}
+#endif
+
+#ifndef ALT_BITSTREAM_WRITER
+/* for jpeg : escape 0xff with 0x00 after it */
+static inline void jput_bits(PutBitContext *s, int n, unsigned int value)
+{
+ unsigned int bit_buf, b;
+ int bit_left, i;
+
+ assert(n == 32 || value < (1U << n));
+
+ bit_buf = s->bit_buf;
+ bit_left = s->bit_left;
+
+ //printf("n=%d value=%x cnt=%d buf=%x\n", 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);
+ /* handle escape */
+ for(i=0;i<4;i++) {
+ b = (bit_buf >> 24);
+ *(s->buf_ptr++) = b;
+ if (b == 0xff)
+ *(s->buf_ptr++) = 0;
+ bit_buf <<= 8;
+ }
+
+ 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 jput_bits(PutBitContext *s, int n, int value)
+{
+ int index= s->index;
+ uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3));
+ int v= ptr[0];
+//if(n>24) printf("%d %d\n", n, value);
+
+ v |= be2me_32(value<<(32-n-(index&7) ));
+ if(((v+0x01010101)^0xFFFFFFFF)&v&0x80808080)
+ {
+ /* handle idiotic (m)jpeg escapes */
+ uint8_t *bPtr= (uint8_t*)ptr;
+ int numChecked= ((index+n)>>3) - (index>>3);
+
+ v= be2me_32(v);
+
+ *(bPtr++)= v>>24;
+ if((v&0xFF000000)==0xFF000000 && numChecked>0){
+ *(bPtr++)= 0x00;
+ index+=8;
+ }
+ *(bPtr++)= (v>>16)&0xFF;
+ if((v&0x00FF0000)==0x00FF0000 && numChecked>1){
+ *(bPtr++)= 0x00;
+ index+=8;
+ }
+ *(bPtr++)= (v>>8)&0xFF;
+ if((v&0x0000FF00)==0x0000FF00 && numChecked>2){
+ *(bPtr++)= 0x00;
+ index+=8;
+ }
+ *(bPtr++)= v&0xFF;
+ if((v&0x000000FF)==0x000000FF && numChecked>3){
+ *(bPtr++)= 0x00;
+ index+=8;
+ }
+ *((uint32_t*)bPtr)= 0;
+ }
+ else
+ {
+ ptr[0] = v;
+ ptr[1] = 0;
+ }
+
+ index+= n;
+ s->index= index;
+ }
+#endif
+
+static inline uint8_t* pbBufPtr(PutBitContext *s)
+{
+#ifdef ALT_BITSTREAM_WRITER
+ return s->buf + (s->index>>3);
+#else
+ return s->buf_ptr;
+#endif
+}
+
+/* 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
+*/
+
+#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= be2me_32( unaligned32( ((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 16
+
+# 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;\
+
+# 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;\
+ }\
+
+# 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 \n\t"\
+ "shll %2, %1 \n\t"\
+ : "+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
+
+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;
+}
+
+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;
+}
+
+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);
+}
+
+void init_get_bits(GetBitContext *s,
+ UINT8 *buffer, int buffer_size);
+
+int check_marker(GetBitContext *s, 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);
-int get_vlc(GetBitContext *s, VLC *vlc);
-/* macro to go faster */
-/* n must be <= 24 */
-/* XXX: optimize buffer end test */
-#define SHOW_BITS(s, val, n)\
+#define GET_VLC(code, name, gb, table, bits, max_depth)\
{\
- if (bit_cnt < n && buf_ptr < (s)->buf_end) {\
- bit_buf |= *buf_ptr++ << (24 - bit_cnt);\
- bit_cnt += 8;\
- if (bit_cnt < n && buf_ptr < (s)->buf_end) {\
- bit_buf |= *buf_ptr++ << (24 - bit_cnt);\
- bit_cnt += 8;\
- if (bit_cnt < n && buf_ptr < (s)->buf_end) {\
- bit_buf |= *buf_ptr++ << (24 - bit_cnt);\
- bit_cnt += 8;\
- }\
+ 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];\
}\
}\
- val = bit_buf >> (32 - n);\
+ SKIP_BITS(name, gb, n)\
}
-/* SHOW_BITS with n1 >= n must be been done before */
-#define FLUSH_BITS(n)\
+#define GET_RL_VLC(level, run, name, gb, table, bits, max_depth)\
{\
- bit_buf <<= n;\
- bit_cnt -= n;\
+ 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)\
}
-#define SAVE_BITS(s) \
-{\
- bit_cnt = (s)->bit_cnt;\
- bit_buf = (s)->bit_buf;\
- buf_ptr = (s)->buf_ptr;\
+// 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;
}
-#define RESTORE_BITS(s) \
-{\
- (s)->buf_ptr = buf_ptr;\
- (s)->bit_buf = bit_buf;\
- (s)->bit_cnt = bit_cnt;\
+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 it to include statistics code (useful only for optimizing
codec efficiency */
//#define STATS
/* misc math functions */
-extern inline int log2(unsigned int v)
+static inline int av_log2(unsigned int v)
{
int n;
return n;
}
-/* memory */
-void *av_mallocz(int size);
+/* median of 3 */
+static inline int mid_pred(int a, int b, int c)
+{
+ int vmin, vmax;
+ vmax = vmin = a;
+ if (b < vmin)
+ vmin = b;
+ else
+ vmax = b;
+
+ if (c < vmin)
+ vmin = c;
+ else if (c > vmax)
+ vmax = c;
+
+ return a + b + c - vmin - vmax;
+}
+
+static inline int clip(int a, int amin, int amax)
+{
+ if (a < amin)
+ return amin;
+ else if (a > amax)
+ return amax;
+ else
+ return a;
+}
+
+/* math */
+extern const UINT8 ff_sqrt_tab[128];
+
+int ff_gcd(int a, int 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(char *s){
+ assert( strlen(s)==4 );
+
+ return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
+}
+
+#ifdef ARCH_X86
+#define MASK_ABS(mask, level)\
+ asm volatile(\
+ "cdq \n\t"\
+ "xorl %1, %0 \n\t"\
+ "subl %1, %0 \n\t"\
+ : "+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 \n\t"\
+ "cmovl %3, %0 \n\t"\
+ "cmovl %4, %1 \n\t"\
+ "cmovl %5, %2 \n\t"\
+ : "+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
+
+#define CLAMP_TO_8BIT(d) ((d > 0xff) ? 0xff : (d < 0) ? 0 : d)
+
+#endif /* HAVE_AV_CONFIG_H */
+
+#endif /* COMMON_H */