From abc8110f7e54fc009895c659ce2a977fb0d697c5 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 17 Jul 2013 22:41:39 +0200
Subject: [PATCH] avcodec: add avcodec_chroma_pos_to_enum()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 doc/APIchanges       |  4 ++++
 libavcodec/avcodec.h | 11 +++++++++++
 libavcodec/utils.c   | 11 +++++++++++
 libavcodec/version.h |  4 ++--
 4 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index aac9d8c0aa..2bb45fad10 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,10 @@ libavutil:     2012-10-22
 
 API changes, most recent first:
 
+2013-07-XX - xxxxxxx - XXXXXXXXXXXXXX - avcodec.h
+  Add avcodec_chroma_pos_to_enum()
+  Add avcodec_enum_to_chroma_pos()
+
 2013-07-03 - xxxxxxx - lavfi 3.78.100 - avfilter.h
   Deprecate avfilter_graph_parse() in favor of the equivalent
   avfilter_graph_parse_ptr().
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index bcef2a454d..98217b8be5 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3617,6 +3617,17 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
  */
 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos);
 
+/**
+ * Converts swscale x/y chroma position to AVChromaLocation.
+ *
+ * The positions represent the chroma (0,0) position in a coordinates system
+ * with luma (0,0) representing the origin and luma(1,1) representing 256,256
+ *
+ * @param xpos  horizontal chroma sample position
+ * @param ypos  vertical   chroma sample position
+ */
+enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos);
+
 #if FF_API_OLD_DECODE_AUDIO
 /**
  * Wrapper function which calls avcodec_decode_audio4.
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 0b33170079..64bae3eea5 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -350,6 +350,17 @@ int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
     return 0;
 }
 
+enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
+{
+    int pos, xout, yout;
+
+    for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
+        if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
+            return pos;
+    }
+    return AVCHROMA_LOC_UNSPECIFIED;
+}
+
 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
                              enum AVSampleFormat sample_fmt, const uint8_t *buf,
                              int buf_size, int align)
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 32834460b5..06777bf3a0 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,8 +29,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR  18
-#define LIBAVCODEC_VERSION_MICRO 102
+#define LIBAVCODEC_VERSION_MINOR  19
+#define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \