X-Git-Url: http://47.100.26.94:8080/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavutil%2Fmem.h;fp=app%2Fsrc%2Fmain%2Fjni%2Finclude%2Flibavutil%2Fmem.h;h=0000000000000000000000000000000000000000;hb=577426ccc66649228285c4a0b6ba8752836059c6;hp=d25b3229b7ccbf0bfb0e3668f785cb1b5b860a3e;hpb=b7202442677d0cf41e6e59870cd6c34e5619b8b9;p=rtmpclient.git diff --git a/app/src/main/jni/include/libavutil/mem.h b/app/src/main/jni/include/libavutil/mem.h deleted file mode 100644 index d25b322..0000000 --- a/app/src/main/jni/include/libavutil/mem.h +++ /dev/null @@ -1,406 +0,0 @@ -/* - * copyright (c) 2006 Michael Niedermayer - * - * 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 -#include - -#include "attributes.h" -#include "error.h" -#include "avutil.h" - -/** - * @addtogroup lavu_mem - * @{ - */ - - -#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(...) __attribute__((alloc_size(__VA_ARGS__))) -#else - #define av_alloc_size(...) -#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 a block of size * nmemb bytes with av_malloc(). - * @param nmemb Number of elements - * @param size Size of the single element - * @return Pointer to the allocated block, NULL if the block cannot - * be allocated. - * @see av_malloc() - */ -av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t size) -{ - if (!size || nmemb >= INT_MAX / size) - return NULL; - return av_malloc(nmemb * size); -} - -/** - * 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_realloc() or NULL. - * @param size Size in bytes of 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. - * @warning Pointers originating from the av_malloc() family of functions must - * not be passed to av_realloc(). The former can be implemented using - * memalign() (or other functions), and there is no guarantee that - * pointers from such functions can be passed to realloc() at all. - * The situation is undefined according to POSIX and may crash with - * some libc implementations. - * @see av_fast_realloc() - */ -void *av_realloc(void *ptr, size_t size) av_alloc_size(2); - -/** - * Allocate or reallocate a block of memory. - * This function does the same thing as av_realloc, except: - * - It takes two arguments and checks the result of the multiplication for - * integer overflow. - * - It frees the input block in case of failure, thus avoiding the memory - * leak with the classic "buf = realloc(buf); if (!buf) return -1;". - */ -void *av_realloc_f(void *ptr, size_t nelem, size_t elsize); - -/** - * 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 pointer to a memory block already allocated - * with av_realloc(), or pointer to a pointer to NULL. - * The pointer is updated on success, or freed on failure. - * @param size Size in bytes for the memory block to be allocated or - * reallocated - * @return Zero on success, an AVERROR error code on failure. - * @warning Pointers originating from the av_malloc() family of functions must - * not be passed to av_reallocp(). The former can be implemented using - * memalign() (or other functions), and there is no guarantee that - * pointers from such functions can be passed to realloc() at all. - * The situation is undefined according to POSIX and may crash with - * some libc implementations. - */ -av_warn_unused_result -int av_reallocp(void *ptr, size_t size); - -/** - * Allocate or reallocate an array. - * If ptr is NULL and nmemb > 0, allocate a new block. If - * nmemb is zero, free the memory block pointed to by ptr. - * @param ptr Pointer to a memory block already allocated with - * av_realloc() or NULL. - * @param nmemb Number of elements - * @param size Size of the single element - * @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. - * @warning Pointers originating from the av_malloc() family of functions must - * not be passed to av_realloc(). The former can be implemented using - * memalign() (or other functions), and there is no guarantee that - * pointers from such functions can be passed to realloc() at all. - * The situation is undefined according to POSIX and may crash with - * some libc implementations. - */ -av_alloc_size(2, 3) void *av_realloc_array(void *ptr, size_t nmemb, size_t size); - -/** - * Allocate or reallocate an array through a pointer to a pointer. - * If *ptr is NULL and nmemb > 0, allocate a new block. If - * nmemb is zero, free the memory block pointed to by ptr. - * @param ptr Pointer to a pointer to a memory block already allocated - * with av_realloc(), or pointer to a pointer to NULL. - * The pointer is updated on success, or freed on failure. - * @param nmemb Number of elements - * @param size Size of the single element - * @return Zero on success, an AVERROR error code on failure. - * @warning Pointers originating from the av_malloc() family of functions must - * not be passed to av_realloc(). The former can be implemented using - * memalign() (or other functions), and there is no guarantee that - * pointers from such functions can be passed to realloc() at all. - * The situation is undefined according to POSIX and may crash with - * some libc implementations. - */ -av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb, size_t size); - -/** - * 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); - -/** - * Allocate a block of nmemb * size bytes with alignment suitable for all - * memory accesses (including vectors if available on the CPU) and - * zero all the bytes of the block. - * The allocation will fail if nmemb * size is greater than or equal - * to INT_MAX. - * @param nmemb - * @param size - * @return Pointer to the allocated block, NULL if it cannot be allocated. - */ -void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib; - -/** - * Allocate a block of size * nmemb bytes with av_mallocz(). - * @param nmemb Number of elements - * @param size Size of the single element - * @return Pointer to the allocated block, NULL if the block cannot - * be allocated. - * @see av_mallocz() - * @see av_malloc_array() - */ -av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size) -{ - if (!size || nmemb >= INT_MAX / size) - return NULL; - return av_mallocz(nmemb * size); -} - -/** - * 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; - -/** - * Duplicate a substring of the string s. - * @param s string to be duplicated - * @param len the maximum length of the resulting string (not counting the - * terminating byte). - * @return Pointer to a newly-allocated string containing a - * copy of s or NULL if the string cannot be allocated. - */ -char *av_strndup(const char *s, size_t len) av_malloc_attrib; - -/** - * Duplicate the buffer p. - * @param p buffer to be duplicated - * @return Pointer to a newly allocated buffer containing a - * copy of p or NULL if the buffer cannot be allocated. - */ -void *av_memdup(const void *p, size_t size); - -/** - * 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. - * @note passing a pointer to a NULL pointer is safe and leads to no action. - * @see av_free() - */ -void av_freep(void *ptr); - -/** - * Add an element to a dynamic array. - * - * The array to grow is supposed to be an array of pointers to - * structures, and the element to add must be a pointer to an already - * allocated structure. - * - * The array is reallocated when its size reaches powers of 2. - * Therefore, the amortized cost of adding an element is constant. - * - * In case of success, the pointer to the array is updated in order to - * point to the new grown array, and the number pointed to by nb_ptr - * is incremented. - * In case of failure, the array is freed, *tab_ptr is set to NULL and - * *nb_ptr is set to 0. - * - * @param tab_ptr pointer to the array to grow - * @param nb_ptr pointer to the number of elements in the array - * @param elem element to add - * @see av_dynarray_add_nofree(), av_dynarray2_add() - */ -void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem); - -/** - * Add an element to a dynamic array. - * - * Function has the same functionality as av_dynarray_add(), - * but it doesn't free memory on fails. It returns error code - * instead and leave current buffer untouched. - * - * @param tab_ptr pointer to the array to grow - * @param nb_ptr pointer to the number of elements in the array - * @param elem element to add - * @return >=0 on success, negative otherwise. - * @see av_dynarray_add(), av_dynarray2_add() - */ -av_warn_unused_result -int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem); - -/** - * Add an element of size elem_size to a dynamic array. - * - * The array is reallocated when its number of elements reaches powers of 2. - * Therefore, the amortized cost of adding an element is constant. - * - * In case of success, the pointer to the array is updated in order to - * point to the new grown array, and the number pointed to by nb_ptr - * is incremented. - * In case of failure, the array is freed, *tab_ptr is set to NULL and - * *nb_ptr is set to 0. - * - * @param tab_ptr pointer to the array to grow - * @param nb_ptr pointer to the number of elements in the array - * @param elem_size size in bytes of the elements in the array - * @param elem_data pointer to the data of the element to add. If NULL, the space of - * the new added element is not filled. - * @return pointer to the data of the element to copy in the new allocated space. - * If NULL, the new allocated space is left uninitialized." - * @see av_dynarray_add(), av_dynarray_add_nofree() - */ -void *av_dynarray2_add(void **tab_ptr, int *nb_ptr, size_t elem_size, - const uint8_t *elem_data); - -/** - * Multiply two size_t values checking for overflow. - * @return 0 if success, AVERROR(EINVAL) if overflow. - */ -static inline int av_size_mult(size_t a, size_t b, size_t *r) -{ - size_t t = a * b; - /* Hack inspired from glibc: only try the division if nelem and elsize - * are both greater than sqrt(SIZE_MAX). */ - if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b) - return AVERROR(EINVAL); - *r = t; - return 0; -} - -/** - * Set the maximum size that may me allocated in one block. - */ -void av_max_alloc(size_t max); - -/** - * deliberately overlapping memcpy implementation - * @param dst destination buffer - * @param back how many bytes back we start (the initial size of the overlapping window), must be > 0 - * @param cnt number of bytes to copy, must be >= 0 - * - * cnt > back is valid, this will copy the bytes we just copied, - * thus creating a repeating pattern with a period length of back. - */ -void av_memcpy_backptr(uint8_t *dst, int back, int cnt); - -/** - * Reallocate the given block if it is not large enough, otherwise do nothing. - * - * @see av_realloc - */ -void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size); - -/** - * Allocate a buffer, reusing the given one if large enough. - * - * Contrary to av_fast_realloc the current buffer contents might not be - * preserved and on error the old buffer is freed, thus no special - * handling to avoid memleaks is necessary. - * - * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer - * @param size size of the buffer *ptr points to - * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and - * *size 0 if an error occurred. - */ -void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size); - -/** - * Allocate a buffer, reusing the given one if large enough. - * - * All newly allocated space is initially cleared - * Contrary to av_fast_realloc the current buffer contents might not be - * preserved and on error the old buffer is freed, thus no special - * handling to avoid memleaks is necessary. - * - * @param ptr pointer to pointer to already allocated buffer, overwritten with pointer to new buffer - * @param size size of the buffer *ptr points to - * @param min_size minimum size of *ptr buffer after returning, *ptr will be NULL and - * *size 0 if an error occurred. - */ -void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size); - -/** - * @} - */ - -#endif /* AVUTIL_MEM_H */