avutil/buffer: change public function and struct size parameter types to size_t

Signed-off-by: James Almer <jamrial@gmail.com>

6 files changed, 58 insertions, 12 deletions

diff --git a/doc/APIchanges b/doc/APIchanges
index 4027d599e7..80e9b849c8 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,10 @@ libavutil:     2017-10-21
 
 API changes, most recent first:
 
+2021-03-10 - xxxxxxxxxx - lavu 56.68.100 - buffer.h
+  Change AVBufferRef related function and struct size parameter and fields
+  type to size_t at next major bump.
+
 2021-03-04 - xxxxxxxxxx - lavc 58.128.101 - avcodec.h
   Enable err_recognition to be set for encoders.
 
diff --git a/libavutil/buffer.c b/libavutil/buffer.c
index 3204f11b68..858633e8c7 100644
--- a/libavutil/buffer.c
+++ b/libavutil/buffer.c
@@ -26,7 +26,7 @@
 #include "mem.h"
 #include "thread.h"
 
-AVBufferRef *av_buffer_create(uint8_t *data, int size,
+AVBufferRef *av_buffer_create(uint8_t *data, buffer_size_t size,
                               void (*free)(void *opaque, uint8_t *data),
                               void *opaque, int flags)
 {
@@ -64,7 +64,7 @@ void av_buffer_default_free(void *opaque, uint8_t *data)
     av_free(data);
 }
 
-AVBufferRef *av_buffer_alloc(int size)
+AVBufferRef *av_buffer_alloc(buffer_size_t size)
 {
     AVBufferRef *ret = NULL;
     uint8_t    *data = NULL;
@@ -80,7 +80,7 @@ AVBufferRef *av_buffer_alloc(int size)
     return ret;
 }
 
-AVBufferRef *av_buffer_allocz(int size)
+AVBufferRef *av_buffer_allocz(buffer_size_t size)
 {
     AVBufferRef *ret = av_buffer_alloc(size);
     if (!ret)
@@ -166,7 +166,7 @@ int av_buffer_make_writable(AVBufferRef **pbuf)
     return 0;
 }
 
-int av_buffer_realloc(AVBufferRef **pbuf, int size)
+int av_buffer_realloc(AVBufferRef **pbuf, buffer_size_t size)
 {
     AVBufferRef *buf = *pbuf;
     uint8_t *tmp;
@@ -242,8 +242,8 @@ int av_buffer_replace(AVBufferRef **pdst, AVBufferRef *src)
     return 0;
 }
 
-AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
-                                   AVBufferRef* (*alloc)(void *opaque, int size),
+AVBufferPool *av_buffer_pool_init2(buffer_size_t size, void *opaque,
+                                   AVBufferRef* (*alloc)(void *opaque, buffer_size_t size),
                                    void (*pool_free)(void *opaque))
 {
     AVBufferPool *pool = av_mallocz(sizeof(*pool));
@@ -263,7 +263,7 @@ AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
     return pool;
 }
 
-AVBufferPool *av_buffer_pool_init(int size, AVBufferRef* (*alloc)(int size))
+AVBufferPool *av_buffer_pool_init(buffer_size_t size, AVBufferRef* (*alloc)(buffer_size_t size))
 {
     AVBufferPool *pool = av_mallocz(sizeof(*pool));
     if (!pool)
diff --git a/libavutil/buffer.h b/libavutil/buffer.h
index fd4e381efa..241a80ed67 100644
--- a/libavutil/buffer.h
+++ b/libavutil/buffer.h
@@ -25,8 +25,11 @@
 #ifndef AVUTIL_BUFFER_H
 #define AVUTIL_BUFFER_H
 
+#include <stddef.h>
 #include <stdint.h>
 
+#include "version.h"
+
 /**
  * @defgroup lavu_buffer AVBuffer
  * @ingroup lavu_data
@@ -90,7 +93,11 @@ typedef struct AVBufferRef {
     /**
      * Size of data in bytes.
      */
+#if FF_API_BUFFER_SIZE_T
     int      size;
+#else
+    size_t   size;
+#endif
 } AVBufferRef;
 
 /**
@@ -98,13 +105,21 @@ typedef struct AVBufferRef {
  *
  * @return an AVBufferRef of given size or NULL when out of memory
  */
+#if FF_API_BUFFER_SIZE_T
 AVBufferRef *av_buffer_alloc(int size);
+#else
+AVBufferRef *av_buffer_alloc(size_t size);
+#endif
 
 /**
  * Same as av_buffer_alloc(), except the returned buffer will be initialized
  * to zero.
  */
+#if FF_API_BUFFER_SIZE_T
 AVBufferRef *av_buffer_allocz(int size);
+#else
+AVBufferRef *av_buffer_allocz(size_t size);
+#endif
 
 /**
  * Always treat the buffer as read-only, even when it has only one
@@ -127,7 +142,11 @@ AVBufferRef *av_buffer_allocz(int size);
  *
  * @return an AVBufferRef referring to data on success, NULL on failure.
  */
+#if FF_API_BUFFER_SIZE_T
 AVBufferRef *av_buffer_create(uint8_t *data, int size,
+#else
+AVBufferRef *av_buffer_create(uint8_t *data, size_t size,
+#endif
                               void (*free)(void *opaque, uint8_t *data),
                               void *opaque, int flags);
 
@@ -195,7 +214,11 @@ int av_buffer_make_writable(AVBufferRef **buf);
  * reference to it (i.e. the one passed to this function). In all other cases
  * a new buffer is allocated and the data is copied.
  */
+#if FF_API_BUFFER_SIZE_T
 int av_buffer_realloc(AVBufferRef **buf, int size);
+#else
+int av_buffer_realloc(AVBufferRef **buf, size_t size);
+#endif
 
 /**
  * Ensure dst refers to the same data as src.
@@ -262,7 +285,11 @@ typedef struct AVBufferPool AVBufferPool;
  * (av_buffer_alloc()).
  * @return newly created buffer pool on success, NULL on error.
  */
+#if FF_API_BUFFER_SIZE_T
 AVBufferPool *av_buffer_pool_init(int size, AVBufferRef* (*alloc)(int size));
+#else
+AVBufferPool *av_buffer_pool_init(size_t size, AVBufferRef* (*alloc)(size_t size));
+#endif
 
 /**
  * Allocate and initialize a buffer pool with a more complex allocator.
@@ -279,8 +306,13 @@ AVBufferPool *av_buffer_pool_init(int size, AVBufferRef* (*alloc)(int size));
  *                  data. May be NULL.
  * @return newly created buffer pool on success, NULL on error.
  */
+#if FF_API_BUFFER_SIZE_T
 AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
                                    AVBufferRef* (*alloc)(void *opaque, int size),
+#else
+AVBufferPool *av_buffer_pool_init2(size_t size, void *opaque,
+                                   AVBufferRef* (*alloc)(void *opaque, size_t size),
+#endif
                                    void (*pool_free)(void *opaque));
 
 /**
diff --git a/libavutil/buffer_internal.h b/libavutil/buffer_internal.h
index 70d2615a06..0b549e3a53 100644
--- a/libavutil/buffer_internal.h
+++ b/libavutil/buffer_internal.h
@@ -32,7 +32,7 @@
 
 struct AVBuffer {
     uint8_t *data; /**< data described by this buffer */
-    int      size; /**< size of data in bytes */
+    buffer_size_t size; /**< size of data in bytes */
 
     /**
      *  number of existing AVBufferRef instances referring to this buffer
@@ -89,10 +89,10 @@ struct AVBufferPool {
      */
     atomic_uint refcount;
 
-    int size;
+    buffer_size_t size;
     void *opaque;
-    AVBufferRef* (*alloc)(int size);
-    AVBufferRef* (*alloc2)(void *opaque, int size);
+    AVBufferRef* (*alloc)(buffer_size_t size);
+    AVBufferRef* (*alloc2)(void *opaque, buffer_size_t size);
     void         (*pool_free)(void *opaque);
 };
 
diff --git a/libavutil/internal.h b/libavutil/internal.h
index 93ea57c324..572daefec3 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -299,4 +299,11 @@ int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t time
 #define FF_PSEUDOPAL 0
 #endif
 
+// Temporary typedef to simplify porting all AVBufferRef users to size_t
+#if FF_API_BUFFER_SIZE_T
+typedef int buffer_size_t;
+#else
+typedef size_t buffer_size_t;
+#endif
+
 #endif /* AVUTIL_INTERNAL_H */
diff --git a/libavutil/version.h b/libavutil/version.h
index 356c54d633..9a290d57e7 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  56
-#define LIBAVUTIL_VERSION_MINOR  67
+#define LIBAVUTIL_VERSION_MINOR  68
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
@@ -132,6 +132,9 @@
 #ifndef FF_API_CHILD_CLASS_NEXT
 #define FF_API_CHILD_CLASS_NEXT         (LIBAVUTIL_VERSION_MAJOR < 57)
 #endif
+#ifndef FF_API_BUFFER_SIZE_T
+#define FF_API_BUFFER_SIZE_T            (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
 #ifndef FF_API_D2STR
 #define FF_API_D2STR                    (LIBAVUTIL_VERSION_MAJOR < 58)
 #endif