Merge commit 'b7f1010c8fce09096057528f7cd29589ea1ae7df'

* commit 'b7f1010c8fce09096057528f7cd29589ea1ae7df':
  tools: do not use av_pix_fmt_descriptors directly.
  pixdesc: add functions for accessing pixel format descriptors.
  build: add support for Tru64 (OSF/1)
  md5: Allocate a normal private context for the opaque md5 context pointer

Conflicts:
	cmdutils.c
	doc/APIchanges
	ffprobe.c
	libavformat/md5enc.c
	libavutil/version.h
	tools/graph2dot.c

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

1 files changed, 23 insertions, 0 deletions

diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index 465c215190..ccbee9b2f1 100644
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -99,10 +99,12 @@ typedef struct AVPixFmtDescriptor{
  */
 #define PIX_FMT_PSEUDOPAL 64
 
+#if FF_API_PIX_FMT_DESC
 /**
  * The array of all the pixel format descriptors.
  */
 extern const AVPixFmtDescriptor av_pix_fmt_descriptors[];
+#endif
 
 /**
  * Read a line from an image, and write the values of the
@@ -183,4 +185,25 @@ char *av_get_pix_fmt_string (char *buf, int buf_size, enum AVPixelFormat pix_fmt
  */
 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
 
+/**
+ * @return a pixel format descriptor for provided pixel format or NULL if
+ * this pixel format is unknown.
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt);
+
+/**
+ * Iterate over all pixel format descriptors known to libavutil.
+ *
+ * @param prev previous descriptor. NULL to get the first descriptor.
+ *
+ * @return next descriptor or NULL after the last descriptor
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev);
+
+/**
+ * @return an AVPixelFormat id described by desc, or AV_PIX_FMT_NONE if desc
+ * is not a valid pointer to a pixel format descriptor.
+ */
+enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc);
+
 #endif /* AVUTIL_PIXDESC_H */