Move av_fast_{m,re}alloc from lavc to lavu.

3 files changed, 13 insertions, 47 deletions

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 294783bda6..79c6efc3a2 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -36,6 +36,10 @@
 #include "libavutil/dict.h"
 #include "libavutil/frame.h"
 #include "libavutil/log.h"
+#if FF_API_FAST_MALLOC
+// to provide fast_*alloc
+#include "libavutil/mem.h"
+#endif
 #include "libavutil/pixfmt.h"
 #include "libavutil/rational.h"
 
@@ -4198,27 +4202,6 @@ AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f);
 /* memory */
 
 /**
- * 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 with padding, reusing the given one if large enough.
  *
  * Same behaviour av_fast_malloc but the buffer has additional
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 2f5c170c69..23165f4f43 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -55,37 +55,17 @@ static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
 static void *codec_mutex;
 static void *avformat_mutex;
 
-void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
+#if FF_API_FAST_MALLOC && CONFIG_SHARED && HAVE_SYMVER
+FF_SYMVER(void*, av_fast_realloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
 {
-    if (min_size < *size)
-        return ptr;
-
-    min_size = FFMAX(17 * min_size / 16 + 32, min_size);
-
-    ptr = av_realloc(ptr, min_size);
-    /* we could set this to the unmodified min_size but this is safer
-     * if the user lost the ptr and uses NULL now
-     */
-    if (!ptr)
-        min_size = 0;
-
-    *size = min_size;
-
-    return ptr;
+    return av_fast_realloc(ptr, size, min_size);
 }
 
-void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
+FF_SYMVER(void, av_fast_malloc, (void *ptr, unsigned int *size, size_t min_size), "LIBAVCODEC_55")
 {
-    void **p = ptr;
-    if (min_size < *size)
-        return;
-    min_size = FFMAX(17 * min_size / 16 + 32, min_size);
-    av_free(*p);
-    *p = av_malloc(min_size);
-    if (!*p)
-        min_size = 0;
-    *size = min_size;
+    av_fast_malloc(ptr, size, min_size);
 }
+#endif
 
 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
 {
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 5f86245f1d..38a606422d 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -112,5 +112,8 @@
 #ifndef FF_API_MAX_BFRAMES
 #define FF_API_MAX_BFRAMES       (LIBAVCODEC_VERSION_MAJOR < 56)
 #endif
+#ifndef FF_API_FAST_MALLOC
+#define FF_API_FAST_MALLOC       (LIBAVCODEC_VERSION_MAJOR < 56)
+#endif
 
 #endif /* AVCODEC_VERSION_H */