[PATCH 1/1] Deprecate avcodec_check_dimensions() in favor of the new function av_check_image_size() declared in libavcore/imgutils.h.

[Stefano Sabatini]

---
 libavcodec/avcodec.h |   11 +++++------
 libavcodec/utils.c   |    8 +++-----
 libavcore/imgutils.c |   19 +++++++++++++++++++
 libavcore/imgutils.h |   13 +++++++++++++
 4 files changed, 40 insertions(+), 11 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index a38b630..871e655 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3392,15 +3392,14 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
                                int linesize_align[4]);
 
+#if LIBAVCODEC_VERSION_MAJOR < 53
 /**
- * Check if the given dimension of a picture is valid, meaning that all
- * bytes of the picture can be addressed with a signed int.
- *
- * @param[in] w Width of the picture.
- * @param[in] h Height of the picture.
- * @return Zero if valid, a negative value if invalid.
+ * @deprecated Deprecated in favor of av_check_image_size().
  */
+attribute_deprecated
 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
+#endif
+
 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
 
 int avcodec_thread_init(AVCodecContext *s, int thread_count);
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 1d12f69..693b7d8 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -213,13 +213,11 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
     *width=FFALIGN(*width, align);
 }
 
+#if LIBAVCODEC_VERSION_MAJOR < 53
 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
-    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
-        return 0;
-
-    av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
-    return AVERROR(EINVAL);
+    return av_check_image_size(w, h, 0, av_log_ctx);
 }
+#endif
 
 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
     int i;
diff --git a/libavcore/imgutils.c b/libavcore/imgutils.c
index 54c10d2..350caed 100644
--- a/libavcore/imgutils.c
+++ b/libavcore/imgutils.c
@@ -95,3 +95,22 @@ int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int heigh
 
     return total_size;
 }
+
+typedef struct ImgUtils {
+    const AVClass *class;
+    int   log_offset;
+    void *log_ctx;
+} ImgUtils;
+
+static const AVClass imgutils_class = { "IMGUTILS", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, offsetof(ImgUtils, log_offset), offsetof(ImgUtils, log_ctx) };
+
+int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
+{
+    ImgUtils imgutils = { &imgutils_class, log_offset, log_ctx };
+
+    if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
+        return 0;
+
+    av_log(&imgutils, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
+    return AVERROR(EINVAL);
+}
diff --git a/libavcore/imgutils.h b/libavcore/imgutils.h
index 4a4d6a1..962349d 100644
--- a/libavcore/imgutils.h
+++ b/libavcore/imgutils.h
@@ -50,4 +50,17 @@ int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int widt
 int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
                            uint8_t *ptr, const int linesizes[4]);
 
+/**
+ * Check if the given dimension of an image is valid, meaning that all
+ * bytes of the image can be addressed with a signed int.
+ *
+ * @param w the width of the picture
+ * @param h the height of the picture
+ * @param log_offset the offset to sum to the log level for printing
+ * log messages with log_ctx
+ * @param log_ctx the parent logging context
+ * @return >= 0 if valid, a negative error code otherwise
+ */
+int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
+
 #endif /* AVCORE_IMGUTILS_H */
-- 
1.7.0.4


--gKMricLos+KVdGMg--