Implement av_get_pix_fmt(), and deprecate avcodec_get_pix_fmt().

Originally committed as revision 21545 to svn://svn.ffmpeg.org/ffmpeg/trunk

3 files changed, 51 insertions, 1 deletions

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 01067e750e..0655dc2e68 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -40,7 +40,7 @@
 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
 
 #define LIBAVUTIL_VERSION_MAJOR 50
-#define LIBAVUTIL_VERSION_MINOR  7
+#define LIBAVUTIL_VERSION_MINOR  8
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
index 972da4578f..837927ba7d 100644
--- a/libavutil/pixdesc.c
+++ b/libavutil/pixdesc.c
@@ -654,6 +654,43 @@ const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
     },
 };
 
+static enum PixelFormat get_pix_fmt_internal(const char *name)
+{
+    enum PixelFormat pix_fmt;
+
+    for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
+        if (av_pix_fmt_descriptors[pix_fmt].name &&
+            !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
+            return pix_fmt;
+
+    return PIX_FMT_NONE;
+}
+
+#if HAVE_BIGENDIAN
+#   define X_NE(be, le) be
+#else
+#   define X_NE(be, le) le
+#endif
+
+enum PixelFormat av_get_pix_fmt(const char *name)
+{
+    enum PixelFormat pix_fmt;
+
+    if (!strcmp(name, "rgb32"))
+        name = X_NE("argb", "bgra");
+    else if (!strcmp(name, "bgr32"))
+        name = X_NE("abgr", "rgba");
+
+    pix_fmt = get_pix_fmt_internal(name);
+    if (pix_fmt == PIX_FMT_NONE) {
+        char name2[32];
+
+        snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
+        pix_fmt = get_pix_fmt_internal(name2);
+    }
+    return pix_fmt;
+}
+
 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
 {
     int c, bits = 0;
diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h
index c8743487c9..1fa571f405 100644
--- a/libavutil/pixdesc.h
+++ b/libavutil/pixdesc.h
@@ -203,6 +203,19 @@ static inline void write_line(const uint16_t *src, uint8_t *data[4], const int l
 }
 
 /**
+ * Returns the pixel format corresponding to name.
+ *
+ * If there is no pixel format with name name, then looks for a
+ * pixel format with the name corresponding to the native endian
+ * format of name.
+ * For example in a little-endian system, first looks for "gray16",
+ * then for "gray16le".
+ *
+ * Finally if no pixel format has been found, returns PIX_FMT_NONE.
+ */
+enum PixelFormat av_get_pix_fmt(const char *name);
+
+/**
  * Returns the number of bits per pixel used by the pixel format
  * described by pixdesc.
  *