D:/opendownloadmanager/ODM-1.x/Include.Add/ffmpeg/common.h File Reference

#include <inttypes.h>

Go to the source code of this file.

Defines
#define	av_always_inline   inline
#define	attribute_deprecated
#define	INT64_C(c)   (c ## LL)
#define	UINT64_C(c)   (c ## ULL)
#define	RSHIFT(a, b)   ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
#define	ROUNDED_DIV(a, b)   (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
#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)
#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))
#define	GET_UTF8(val, GET_BYTE, ERROR)
#define	PUT_UTF8(val, tmp, PUT_BYTE)
#define	START_TIMER
#define	STOP_TIMER(id)   {}
#define	DECLARE_ALIGNED(n, t, v)   __declspec(align(n)) t v
Functions
static int	av_log2 (unsigned int v)
static int	av_log2_16bit (unsigned int v)
static int	mid_pred (int a, int b, int c)
static int	clip (int a, int amin, int amax)
static uint8_t	clip_uint8 (int a)
int64_t	ff_gcd (int64_t a, int64_t b)
static int	ff_get_fourcc (const char *s)
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)
Variables
const uint8_t	ff_log2_tab [256]

---

Define Documentation

#define attribute_deprecated

Definition at line 43 of file common.h.

#define av_always_inline   inline

Definition at line 31 of file common.h.

#define DECLARE_ALIGNED	(	n,
		t,
		v		)	__declspec(align(n)) t v

Definition at line 265 of file common.h.

#define FFABS

(

a

)

((a) >= 0 ? (a) : (-(a)))

Definition at line 55 of file common.h.

Referenced by av_encode().

#define FFMAX	(	a,
		b		)	((a) > (b) ? (a) : (b))

Definition at line 58 of file common.h.

Referenced by av_encode(), do_audio_out(), and output_packet().

#define FFMIN	(	a,
		b		)	((a) > (b) ? (b) : (a))

Definition at line 59 of file common.h.

Referenced by av_fifo_generic_read(), av_fifo_write(), and do_video_out().

#define FFSIGN

(

a

)

((a) > 0 ? 1 : -1)

Definition at line 56 of file common.h.

#define FFSWAP	(	type,
		a,
		b		)	do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)

Definition at line 61 of file common.h.

#define GET_UTF8	(	val,
		GET_BYTE,
		ERROR		)

Value:

val= GET_BYTE;\
    {\
        int ones= 7 - av_log2(val ^ 255);\
        if(ones==1)\
            ERROR\
        val&= 127>>ones;\
        while(--ones > 0){\
            int tmp= GET_BYTE - 128;\
            if(tmp>>6)\
                ERROR\
            val= (val<<6) + tmp;\
        }\
    }

Definition at line 163 of file common.h.

#define INT64_C

(

c

)

(c ## LL)

Definition at line 48 of file common.h.

#define MKBETAG	(	a,
		b,
		c,
		d		)	(d | (c << 8) | (b << 16) | (a << 24))

Definition at line 161 of file common.h.

#define MKTAG	(	a,
		b,
		c,
		d		)	(a | (b << 8) | (c << 16) | (d << 24))

Definition at line 160 of file common.h.

#define PUT_UTF8	(	val,
		tmp,
		PUT_BYTE		)

Value:

{\
        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\
            }\
        }\
    }

Definition at line 178 of file common.h.

#define ROUNDED_DIV	(	a,
		b		)	(((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))

Definition at line 54 of file common.h.

#define RSHIFT	(	a,
		b		)	((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))

Definition at line 52 of file common.h.

#define START_TIMER

Definition at line 258 of file common.h.

#define STOP_TIMER

(

id

)

{}

Definition at line 259 of file common.h.

#define UINT64_C

(

c

)

(c ## ULL)

Definition at line 49 of file common.h.

---

Function Documentation

void av_free

(

void *

ptr

)

Referenced by av_encode(), av_fifo_free(), av_fifo_realloc(), ConvertMediaFile(), do_video_out(), new_audio_stream(), output_packet(), and pre_process_video_frame().

void av_freep

(

void *

ptr

)

Referenced by av_encode(), and output_packet().

static int av_log2

(

unsigned int

v

)

[inline, static]

Definition at line 65 of file common.h.

References ff_log2_tab, and n.

static int av_log2_16bit

(

unsigned int

v

)

[inline, static]

Definition at line 83 of file common.h.

References ff_log2_tab, and n.

void* av_malloc

(

unsigned int

size

)

Referenced by av_encode(), av_fifo_init(), do_audio_out(), do_subtitle_out(), and pre_process_video_frame().

void* av_mallocz

(

unsigned int

size

)

Referenced by av_encode().

void* av_realloc	(	void *	ptr,
		unsigned int	size
	)

Referenced by do_audio_out().

char* av_strdup

(

const char *

s

)

static int clip	(	int	a,
		int	amin,
		int	amax
	)			[inline, static]

Definition at line 137 of file common.h.

Referenced by do_audio_out().

static uint8_t clip_uint8

(

int

a

)

[inline, static]

Definition at line 144 of file common.h.

int64_t ff_gcd	(	int64_t	a,
		int64_t	b
	)

static int ff_get_fourcc

(

const char *

s

)

[inline, static]

Definition at line 152 of file common.h.

static int mid_pred	(	int	a,
		int	b,
		int	c
	)			[inline, static]

Definition at line 97 of file common.h.

---

Variable Documentation

const uint8_t ff_log2_tab[256]

Referenced by av_log2(), and av_log2_16bit().