mirror of
https://github.com/cookiengineer/audacity
synced 2025-12-06 16:50:12 +01:00
Import headers of FFmpeg 2.2.2 into lib-src/ffmpeg.
This commit is contained in:
benjamin.drung@gmail.com
@@ -26,9 +26,20 @@
|
||||
#ifndef AVUTIL_MEM_H
|
||||
#define AVUTIL_MEM_H
|
||||
|
||||
#include "attributes.h"
|
||||
#include <limits.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#if defined(__ICC) || defined(__SUNPRO_C)
|
||||
#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__)
|
||||
@@ -40,7 +51,7 @@
|
||||
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 attribute_used __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
|
||||
@@ -55,38 +66,126 @@
|
||||
#define av_malloc_attrib
|
||||
#endif
|
||||
|
||||
#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3)
|
||||
#define av_alloc_size(n) __attribute__((alloc_size(n)))
|
||||
#if AV_GCC_VERSION_AT_LEAST(4,3)
|
||||
#define av_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
|
||||
#else
|
||||
#define av_alloc_size(n)
|
||||
#define av_alloc_size(...)
|
||||
#endif
|
||||
|
||||
/**
|
||||
* Allocates a block of size bytes with alignment suitable for all
|
||||
* 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(unsigned int size) av_malloc_attrib av_alloc_size(1);
|
||||
void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
|
||||
|
||||
/**
|
||||
* Allocates or reallocates a block of memory.
|
||||
* If ptr is NULL and size > 0, allocates a new block. If
|
||||
* size is zero, frees the memory block pointed to by ptr.
|
||||
* @param size Size in bytes for the memory block to be allocated or
|
||||
* reallocated.
|
||||
* 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_malloc(z)() or av_realloc() or NULL.
|
||||
* @return Pointer to a newly reallocated block or NULL if the block
|
||||
* 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, unsigned int size) av_alloc_size(2);
|
||||
void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
|
||||
|
||||
/**
|
||||
* Frees a memory block which has been allocated with av_malloc(z)() or
|
||||
* 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.
|
||||
*/
|
||||
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.
|
||||
@@ -96,25 +195,61 @@ void *av_realloc(void *ptr, unsigned int size) av_alloc_size(2);
|
||||
void av_free(void *ptr);
|
||||
|
||||
/**
|
||||
* Allocates a block of size bytes with alignment suitable for all
|
||||
* Allocate a block of size bytes with alignment suitable for all
|
||||
* memory accesses (including vectors if available on the CPU) and
|
||||
* zeroes all the bytes of the block.
|
||||
* 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(unsigned int size) av_malloc_attrib av_alloc_size(1);
|
||||
void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
|
||||
|
||||
/**
|
||||
* Duplicates the string s.
|
||||
* 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
|
||||
* @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;
|
||||
|
||||
/**
|
||||
* Frees a memory block which has been allocated with av_malloc(z)() or
|
||||
* 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.
|
||||
@@ -122,4 +257,107 @@ char *av_strdup(const char *s) av_malloc_attrib;
|
||||
*/
|
||||
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_dynarray2_add()
|
||||
*/
|
||||
void av_dynarray_add(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()
|
||||
*/
|
||||
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);
|
||||
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
#endif /* AVUTIL_MEM_H */
|
||||
|
||||
Reference in New Issue
Block a user