mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
042f9d62ca
* qatar/master: configure: Automatically add more flags required on symbian mem.h: switch doxygen parameter order to match function prototype doxygen: replace @sa tag by the more readable but equivalent @see doxygen: use Doxygen markup for authors and web links where appropriate doxygen: do not include license boilerplate in Doxygen documentation ac3enc: Mark AVClasses const ffserver: Replace two loops with one loop. ffmpeg: Fix the check for experimental codecs swscale: extend mmx padding. swscale: clip unscaled colorspace conversion path. doxygen: misc consistency cosmetics doc: remove file name from @file directive in Doxygen usage example doxygen: consistently place brief description doxygen: place empty line between brief description and detailed description avformat_open_input(): Add braces to shut up gcc warning. Conflicts: libavcodec/8svx.c libavcodec/tiff.c libavcodec/tiff.h libavcodec/vaapi_h264.c libavcodec/vorbis.c libavcodec/vorbisdec.c libavcodec/vp6.c libswscale/swscale_unscaled.c libswscale/utils.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/*
|
|
* 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
|
|
* memory handling functions
|
|
*/
|
|
|
|
#ifndef AVUTIL_MEM_H
|
|
#define AVUTIL_MEM_H
|
|
|
|
#include "attributes.h"
|
|
#include "avutil.h"
|
|
|
|
#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
|
|
#define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
|
|
#define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v
|
|
#elif defined(__TI_COMPILER_VERSION__)
|
|
#define DECLARE_ALIGNED(n,t,v) \
|
|
AV_PRAGMA(DATA_ALIGN(v,n)) \
|
|
t __attribute__((aligned(n))) v
|
|
#define DECLARE_ASM_CONST(n,t,v) \
|
|
AV_PRAGMA(DATA_ALIGN(v,n)) \
|
|
static const t __attribute__((aligned(n))) v
|
|
#elif defined(__GNUC__)
|
|
#define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
|
|
#define DECLARE_ASM_CONST(n,t,v) static const t av_used __attribute__ ((aligned (n))) v
|
|
#elif defined(_MSC_VER)
|
|
#define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
|
|
#define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v
|
|
#else
|
|
#define DECLARE_ALIGNED(n,t,v) t v
|
|
#define DECLARE_ASM_CONST(n,t,v) static const t v
|
|
#endif
|
|
|
|
#if AV_GCC_VERSION_AT_LEAST(3,1)
|
|
#define av_malloc_attrib __attribute__((__malloc__))
|
|
#else
|
|
#define av_malloc_attrib
|
|
#endif
|
|
|
|
#if AV_GCC_VERSION_AT_LEAST(4,3)
|
|
#define av_alloc_size(n) __attribute__((alloc_size(n)))
|
|
#else
|
|
#define av_alloc_size(n)
|
|
#endif
|
|
|
|
/**
|
|
* Allocate a block of size bytes with alignment suitable for all
|
|
* memory accesses (including vectors if available on the CPU).
|
|
* @param size Size in bytes for the memory block to be allocated.
|
|
* @return Pointer to the allocated block, NULL if the block cannot
|
|
* be allocated.
|
|
* @see av_mallocz()
|
|
*/
|
|
void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
|
|
|
|
/**
|
|
* Allocate or reallocate a block of memory.
|
|
* If ptr is NULL and size > 0, allocate a new block. If
|
|
* size is zero, free the memory block pointed to by ptr.
|
|
* @param ptr Pointer to a memory block already allocated with
|
|
* av_malloc(z)() or av_realloc() or NULL.
|
|
* @param size Size in bytes for the memory block to be allocated or
|
|
* reallocated.
|
|
* @return Pointer to a newly reallocated block or NULL if the block
|
|
* cannot be reallocated or the function is used to free the memory block.
|
|
* @see av_fast_realloc()
|
|
*/
|
|
void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
|
|
|
|
/**
|
|
* Free a memory block which has been allocated with av_malloc(z)() or
|
|
* av_realloc().
|
|
* @param ptr Pointer to the memory block which should be freed.
|
|
* @note ptr = NULL is explicitly allowed.
|
|
* @note It is recommended that you use av_freep() instead.
|
|
* @see av_freep()
|
|
*/
|
|
void av_free(void *ptr);
|
|
|
|
/**
|
|
* Allocate a block of size bytes with alignment suitable for all
|
|
* memory accesses (including vectors if available on the CPU) and
|
|
* zero all the bytes of the block.
|
|
* @param size Size in bytes for the memory block to be allocated.
|
|
* @return Pointer to the allocated block, NULL if it cannot be allocated.
|
|
* @see av_malloc()
|
|
*/
|
|
void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
|
|
|
|
/**
|
|
* Duplicate the string s.
|
|
* @param s string to be duplicated
|
|
* @return Pointer to a newly allocated string containing a
|
|
* copy of s or NULL if the string cannot be allocated.
|
|
*/
|
|
char *av_strdup(const char *s) av_malloc_attrib;
|
|
|
|
/**
|
|
* Free a memory block which has been allocated with av_malloc(z)() or
|
|
* av_realloc() and set the pointer pointing to it to NULL.
|
|
* @param ptr Pointer to the pointer to the memory block which should
|
|
* be freed.
|
|
* @see av_free()
|
|
*/
|
|
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 */
|