Merge commit 'e2ad0b66'

* commit 'e2ad0b66':
  imgutils: create misc functions for dealing with buffers

Conflicts:
	doc/APIchanges
	libavcodec/avcodec.h
	libavcodec/avpicture.c
	libavutil/imgutils.c
	libavutil/imgutils.h
	libavutil/version.h

See: e6674e46Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavutil/imgutils.c

@@ -317,15 +317,17 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
 }
 
 int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
-                         const uint8_t *src,
-                         enum AVPixelFormat pix_fmt, int width, int height, int align)
+                         const uint8_t *src, enum AVPixelFormat pix_fmt,
+                         int width, int height, int align)
 {
     int ret, i;
 
-    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
         return ret;
 
-    if ((ret = av_image_fill_linesizes(dst_linesize, pix_fmt, width)) < 0)
+    ret = av_image_fill_linesizes(dst_linesize, pix_fmt, width);
+    if (ret < 0)
         return ret;
 
     for (i = 0; i < 4; i++)
@@ -334,35 +336,44 @@ int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
     return av_image_fill_pointers(dst_data, pix_fmt, height, (uint8_t *)src, dst_linesize);
 }
 
-int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
+int av_image_get_buffer_size(enum AVPixelFormat pix_fmt,
+                             int width, int height, int align)
 {
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
     uint8_t *data[4];
     int linesize[4];
-
+    int ret;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
     if (!desc)
         return AVERROR(EINVAL);
-    if (av_image_check_size(width, height, 0, NULL) < 0)
-        return AVERROR(EINVAL);
-    if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
+
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
+        return ret;
+
     // do not include palette for these pseudo-paletted formats
+    if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
         return width * height;
-    return av_image_fill_arrays(data, linesize, NULL, pix_fmt, width, height, align);
+
+    return av_image_fill_arrays(data, linesize, NULL, pix_fmt,
+                                width, height, align);
 }
 
 int av_image_copy_to_buffer(uint8_t *dst, int dst_size,
-                            const uint8_t * const src_data[4], const int src_linesize[4],
-                            enum AVPixelFormat pix_fmt, int width, int height, int align)
+                            const uint8_t * const src_data[4],
+                            const int src_linesize[4],
+                            enum AVPixelFormat pix_fmt,
+                            int width, int height, int align)
 {
     int i, j, nb_planes = 0, linesize[4];
-    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
     int size = av_image_get_buffer_size(pix_fmt, width, height, align);
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
 
-    if (size > dst_size || size < 0)
+    if (size > dst_size || size < 0 || !desc)
         return AVERROR(EINVAL);
 
     for (i = 0; i < desc->nb_components; i++)
         nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
+
     nb_planes++;
 
     av_image_fill_linesizes(linesize, pix_fmt, width);

libavutil/imgutils.h

@@ -130,7 +130,7 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
  * line sizes will be set.  If a planar format is specified, several
  * pointers will be set pointing to the different picture planes and
  * the line sizes of the different planes will be stored in the
- * lines_sizes array. Call with !src to get the required
+ * lines_sizes array. Call with src == NULL to get the required
  * size for the src buffer.
  *
  * To allocate the buffer and fill in the dst_data and dst_linesize in

libavutil/version.h

@@ -57,7 +57,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR  54
 #define LIBAVUTIL_VERSION_MINOR  16
-#define LIBAVUTIL_VERSION_MICRO 100
+#define LIBAVUTIL_VERSION_MICRO 101
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \