Implement a -pix_fmts option for listing all the supported pixel

formats.

Originally committed as revision 20909 to svn://svn.ffmpeg.org/ffmpeg/trunk

cmdutils.c

@@ -582,6 +582,11 @@ void show_filters(void)
 #endif
 }
 
+void show_pix_fmts(void)
+{
+    list_fmts(avcodec_pix_fmt_string, PIX_FMT_NB);
+}
+
 int read_yesno(void)
 {
     int c = getchar();

cmdutils.h

@@ -183,6 +183,12 @@ void show_bsfs(void);
  */
 void show_protocols(void);
 
+/**
+ * Prints a listing containing all the pixel formats supported by the
+ * program.
+ */
+void show_pix_fmts(void);
+
 /**
  * Returns a positive value if reads from standard input a line
  * starting with [yY], otherwise returns 0.

cmdutils_common_opts.h

@@ -9,4 +9,5 @@
     { "bsfs"     , OPT_EXIT, {(void*)show_bsfs     }, "show available bit stream filters" },
     { "protocols", OPT_EXIT, {(void*)show_protocols}, "show available protocols" },
     { "filters",   OPT_EXIT, {(void*)show_filters  }, "show available filters" },
+    { "pix_fmts" , OPT_EXIT, {(void*)show_pix_fmts }, "show available pixel formats" },
     { "loglevel", HAS_ARG | OPT_FUNC2, {(void*)opt_loglevel}, "set libav* logging level", "loglevel" },

doc/fftools-common-opts.texi

@@ -46,6 +46,9 @@ Show available protocols.
 @item -filters
 Show available libavfilter filters.
 
+@item -pix_fmts
+Show available pixel formats.
+
 @item -loglevel @var{loglevel}
 Set the logging level used by the library.
 @var{loglevel} is a number or a string containing one of the following values: