From 3f7bb426078aa9fbd8289459d0adcaea22ab18a2 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Date: Mon, 21 Dec 2009 21:53:03 +0000
Subject: 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                   | 5 +++++
 cmdutils.h                   | 6 ++++++
 cmdutils_common_opts.h       | 1 +
 doc/fftools-common-opts.texi | 3 +++
 4 files changed, 15 insertions(+)

diff --git a/cmdutils.c b/cmdutils.c
index 68ef726dd3..176a98daf0 100644
--- a/cmdutils.c
+++ b/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();
diff --git a/cmdutils.h b/cmdutils.h
index 40bdea36d1..d2d722b085 100644
--- a/cmdutils.h
+++ b/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.
diff --git a/cmdutils_common_opts.h b/cmdutils_common_opts.h
index 0a456bc1fe..da309977bd 100644
--- a/cmdutils_common_opts.h
+++ b/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" },
diff --git a/doc/fftools-common-opts.texi b/doc/fftools-common-opts.texi
index 60b05009ab..ce8a4d6240 100644
--- a/doc/fftools-common-opts.texi
+++ b/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:
-- 
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