diff options
Diffstat (limited to 'src/libffmpeg/libavutil/common.h')
| -rw-r--r-- | src/libffmpeg/libavutil/common.h | 151 |
1 files changed, 123 insertions, 28 deletions
diff --git a/src/libffmpeg/libavutil/common.h b/src/libffmpeg/libavutil/common.h index b26c821f8..d167404b6 100644 --- a/src/libffmpeg/libavutil/common.h +++ b/src/libffmpeg/libavutil/common.h @@ -1,3 +1,23 @@ +/* + * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * 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 + */ + /** * @file common.h * common internal and external api header. @@ -56,18 +76,15 @@ #endif #endif -#ifndef EMULATE_INTTYPES -# include <inttypes.h> +#ifndef attribute_deprecated +#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0) +# define attribute_deprecated __attribute__((deprecated)) #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; - typedef signed long long int64_t; - typedef unsigned long long uint64_t; -#endif /* EMULATE_INTTYPES */ +# define attribute_deprecated +#endif +#endif + +# include <inttypes.h> #ifndef PRId64 #define PRId64 "lld" @@ -81,6 +98,10 @@ #define PRIx64 "llx" #endif +#ifndef PRIX64 +#define PRIX64 "llX" +#endif + #ifndef PRId32 #define PRId32 "d" #endif @@ -125,16 +146,6 @@ #define UINT64_MAX uint64_t_C(0xFFFFFFFFFFFFFFFF) #endif -#ifdef EMULATE_FAST_INT -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; -typedef uint64_t uint_fast64_t; -#endif - #ifndef INT_BIT # if INT_MAX != 2147483647 # define INT_BIT 64 @@ -164,11 +175,14 @@ typedef uint64_t uint_fast64_t; #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 FFABS(a) ((a) >= 0 ? (a) : (-(a))) +#define FFSIGN(a) ((a) > 0 ? 1 : -1) #define FFMAX(a,b) ((a) > (b) ? (a) : (b)) #define FFMIN(a,b) ((a) > (b) ? (b) : (a)) +#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0) + /* misc math functions */ extern FF_IMPORT_ATTR const uint8_t ff_log2_tab[256]; @@ -207,7 +221,21 @@ static inline int av_log2_16bit(unsigned int v) /* median of 3 */ static inline int mid_pred(int a, int b, int c) { -#if 0 +#if HAVE_CMOV + int i=b; + asm volatile( + "cmp %2, %1 \n\t" + "cmovg %1, %0 \n\t" + "cmovg %2, %1 \n\t" + "cmp %3, %1 \n\t" + "cmovl %3, %1 \n\t" + "cmp %1, %0 \n\t" + "cmovg %1, %0 \n\t" + :"+&r"(i), "+&r"(a) + :"r"(b), "r"(c) + ); + return i; +#elif 0 int t= (a-b)&((a-b)>>31); a-=t; b+=t; @@ -236,7 +264,7 @@ static inline int mid_pred(int a, int b, int c) * @param a value to clip * @param amin minimum value of the clip range * @param amax maximum value of the clip range - * @return cliped value + * @return clipped value */ static inline int clip(int a, int amin, int amax) { @@ -248,7 +276,7 @@ static inline int clip(int a, int amin, int amax) /** * clip a signed integer value into the 0-255 range * @param a value to clip - * @return cliped value + * @return clipped value */ static inline uint8_t clip_uint8(int a) { @@ -273,7 +301,19 @@ static inline int ff_get_fourcc(const char *s){ #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)) - +/*! + * \def GET_UTF8(val, GET_BYTE, ERROR) + * converts a utf-8 character (up to 4 bytes long) to its 32-bit ucs-4 encoded form + * \param val is the output and should be of type uint32_t. It holds the converted + * ucs-4 character and should be a left value. + * \param GET_BYTE gets utf-8 encoded bytes from any proper source. It can be + * a function or a statement whose return value or evaluated value is of type + * uint8_t. It will be executed up to 4 times for values in the valid utf-8 range, + * and up to 7 times in the general case. + * \param ERROR action that should be taken when an invalid utf-8 byte is returned + * from GET_BYTE. It should be a statement that jumps out of the macro, + * like exit(), goto, return, break, or continue. + */ #define GET_UTF8(val, GET_BYTE, ERROR)\ val= GET_BYTE;\ {\ @@ -289,7 +329,43 @@ static inline int ff_get_fourcc(const char *s){ }\ } -#if defined(ARCH_X86) || defined(ARCH_X86_64) || defined(ARCH_POWERPC) +/*! + * \def PUT_UTF8(val, tmp, PUT_BYTE) + * converts a 32-bit unicode character to its utf-8 encoded form (up to 4 bytes long). + * \param val is an input only argument and should be of type uint32_t. It holds + * a ucs4 encoded unicode character that is to be converted to utf-8. If + * val is given as a function it's executed only once. + * \param tmp is a temporary variable and should be of type uint8_t. It + * represents an intermediate value during conversion that is to be + * outputted by PUT_BYTE. + * \param PUT_BYTE writes the converted utf-8 bytes to any proper destination. + * It could be a function or a statement, and uses tmp as the input byte. + * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be + * executed up to 4 times for values in the valid utf-8 range and up to + * 7 times in the general case, depending on the length of the converted + * unicode character. + */ +#define PUT_UTF8(val, tmp, PUT_BYTE)\ + {\ + int bytes, shift;\ + uint32_t in = val;\ + if (in < 0x80) {\ + tmp = in;\ + PUT_BYTE\ + } else {\ + bytes = (av_log2(in) + 4) / 5;\ + shift = (bytes - 1) * 6;\ + tmp = (256 - (256 >> bytes)) | (in >> shift);\ + PUT_BYTE\ + while (shift >= 6) {\ + shift -= 6;\ + tmp = 0x80 | ((in >> shift) & 0x3f);\ + PUT_BYTE\ + }\ + }\ + } + +#if defined(ARCH_X86) || defined(ARCH_POWERPC) #if defined(ARCH_X86_64) static inline uint64_t read_time(void) { @@ -344,7 +420,7 @@ tend= read_time();\ tcount++;\ }else\ tskip_count++;\ - if(256*256*256*64%(tcount+tskip_count)==0){\ + if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\ av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\ }\ } @@ -354,10 +430,22 @@ tend= read_time();\ #endif /* memory */ + +#ifdef __GNUC__ + #define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n))) +#else + #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v +#endif + +/* memory */ void *av_malloc(unsigned int size); void *av_realloc(void *ptr, unsigned int size); void av_free(void *ptr); +void *av_mallocz(unsigned int size); +char *av_strdup(const char *s); +void av_freep(void *ptr); + /* xine: inline causes trouble for debug compiling */ #ifdef DISABLE_INLINE # ifdef inline @@ -370,4 +458,11 @@ void av_free(void *ptr); # define always_inline #endif +/* xine: define ASMALIGN here since it's cleaner that generating it in the configure */ +#if HAVE_ASMALIGN_POT +# define ASMALIGN(ZEROBITS) ".align " #ZEROBITS "\n\t" +#else +# define ASMALIGN(ZEROBITS) ".align 1<<" #ZEROBITS "\n\t" +#endif + #endif /* COMMON_H */ |