Merge commit 'e2ad0b66fa273c5c823978e8f601f2c0d9ee42f8'

* commit 'e2ad0b66fa273c5c823978e8f601f2c0d9ee42f8':
  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: e6674e46ecdd7aaa93d7f7d818eb1c8224b35eae
Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 26 insertions, 15 deletions

diff --git a/libavutil/imgutils.c b/libavutil/imgutils.c
index 7f3032bdf3..07b494c38a 100644
--- a/libavutil/imgutils.c
+++ b/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);
+
+    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)
-        // do not include palette for these pseudo-paletted formats
         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);