[libav-devel] [PATCH 1/5] pixdesc: add function to check if two pixel formats are equal ignoring endianness

[Janne Grunau]

---
 libavutil/pixdesc.c | 28 ++++++++++++++++++++++++++++
 libavutil/pixdesc.h |  7 +++++++
 libavutil/version.h |  2 +-
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
index 67f9c43..8a55b1f 100644
--- a/libavutil/pixdesc.c
+++ b/libavutil/pixdesc.c
@@ -1512,3 +1512,31 @@ int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
         ret += planes[i];
     return ret;
 }
+
+
+int av_pix_fmt_equal_except_endianness(enum AVPixelFormat fmt_a,
+                                       enum AVPixelFormat fmt_b)
+{
+    int i;
+    const AVPixFmtDescriptor *desc_a = av_pix_fmt_desc_get(fmt_a);
+    const AVPixFmtDescriptor *desc_b = av_pix_fmt_desc_get(fmt_b);
+
+    if (!desc_a || !desc_b)
+        return 0;
+
+    if (desc_a->flags & ~PIX_FMT_BE != desc_b->flags & ~PIX_FMT_BE)
+        return 0;
+    if (desc_a->nb_components       != desc_b->nb_components)
+        return 0;
+    if (desc_a->log2_chroma_w       != desc_b->log2_chroma_w)
+        return 0;
+    if (desc_a->log2_chroma_h       != desc_b->log2_chroma_h)
+        return 0;
+
+    for (i = 0; i < desc_a->nb_components; i++) {
+        if (memcmp(&desc_a->comp[i], &desc_b->comp[i], 
sizeof(desc_a->comp[i])))
+            return 0;
+    }
+
+    return 1;
+}
diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index ef93bfe..1871fe1 100644
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -226,4 +226,11 @@ int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat 
pix_fmt,
 int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt);
 
 
+/**
+ * @return 1 if both pixel formats are equal ignoring endianness, 0 otherwise.
+ */
+int av_pix_fmt_equal_except_endianness(enum AVPixelFormat fmt_a,
+                                       enum AVPixelFormat fmt_b);
+
+
 #endif /* AVUTIL_PIXDESC_H */
diff --git a/libavutil/version.h b/libavutil/version.h
index 6e8daa2..948a28f 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -38,7 +38,7 @@
 
 #define LIBAVUTIL_VERSION_MAJOR 52
 #define LIBAVUTIL_VERSION_MINOR 10
-#define LIBAVUTIL_VERSION_MICRO  0
+#define LIBAVUTIL_VERSION_MICRO  1
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \
-- 
1.8.2.1

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