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Move ff_dynarray_add to lavu and make it public.

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This commit is contained in:
Anton Khirnov 2011-04-29 17:33:38 +02:00
parent 9ac1bf88c0
commit 35ceaa7376
6 changed files with 36 additions and 26 deletions
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4
doc/APIchanges
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@ -13,6 +13,10 @@ libavutil: 2011-04-18
API changes, most recent first:
2011-04-xx - xxxxxxx - lavu 51.2.0 - mem.h
Add av_dynarray_add function for adding
an element to a dynamic array.
2011-04-XX - bebe72f - lavu 51.1.0 - avutil.h
Add AVPictureType enum and av_get_picture_type_char(), deprecate
FF_*_TYPE defines and av_get_pict_type_char() defined in

21
libavformat/cutils.c
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@ -21,27 +21,6 @@
#include "avformat.h"
#include "internal.h"
/* add one element to a dynamic array */
void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem)
{
/* see similar ffmpeg.c:grow_array() */
int nb, nb_alloc;
intptr_t *tab;
nb = *nb_ptr;
tab = *tab_ptr;
if ((nb & (nb - 1)) == 0) {
if (nb == 0)
nb_alloc = 1;
else
nb_alloc = nb * 2;
tab = av_realloc(tab, nb_alloc * sizeof(intptr_t));
*tab_ptr = tab;
}
tab[nb++] = elem;
*nb_ptr = nb;
}
#define ISLEAP(y) (((y) % 4 == 0) && (((y) % 100) != 0 || ((y) % 400) == 0))
#define LEAPS_COUNT(y) ((y)/4 - (y)/100 + (y)/400)

6
libavformat/internal.h
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@ -31,20 +31,18 @@ typedef struct AVCodecTag {
unsigned int tag;
} AVCodecTag;
void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
#ifdef __GNUC__
#define dynarray_add(tab, nb_ptr, elem)\
do {\
__typeof__(tab) _tab = (tab);\
__typeof__(elem) _elem = (elem);\
(void)sizeof(**_tab == _elem); /* check that types are compatible */\
ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\
av_dynarray_add(_tab, nb_ptr, _elem);\
} while(0)
#else
#define dynarray_add(tab, nb_ptr, elem)\
do {\
ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\
av_dynarray_add((tab), nb_ptr, (elem));\
} while(0)
#endif

2
libavutil/avutil.h
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@ -40,7 +40,7 @@
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 51
#define LIBAVUTIL_VERSION_MINOR 1
#define LIBAVUTIL_VERSION_MINOR 2
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

20
libavutil/mem.c
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@ -171,3 +171,23 @@ char *av_strdup(const char *s)
return ptr;
}
/* add one element to a dynamic array */
void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem)
{
/* see similar ffmpeg.c:grow_array() */
int nb, nb_alloc;
intptr_t *tab;
nb = *nb_ptr;
tab = *(intptr_t**)tab_ptr;
if ((nb & (nb - 1)) == 0) {
if (nb == 0)
nb_alloc = 1;
else
nb_alloc = nb * 2;
tab = av_realloc(tab, nb_alloc * sizeof(intptr_t));
*(intptr_t**)tab_ptr = tab;
}
tab[nb++] = (intptr_t)elem;
*nb_ptr = nb;
}

9
libavutil/mem.h
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@ -123,4 +123,13 @@ char *av_strdup(const char *s) av_malloc_attrib;
*/
void av_freep(void *ptr);
/**
* Add an element to a dynamic array.
*
* @param tab_ptr Pointer to the array.
* @param nb_ptr Pointer to the number of elements in the array.
* @param elem Element to be added.
*/
void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem);
#endif /* AVUTIL_MEM_H */