From fd2c0a5db242a3c89a89f1dd2ae9e3155e48f9e2 Mon Sep 17 00:00:00 2001
From: Mina Nagy Zaki <mnzaki@gmail.com>
Date: Sun, 19 Jun 2011 20:31:24 +0200
Subject: lavfi: add layout negotiation fields and helper functions.

---
 libavfilter/formats.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'libavfilter/formats.c')

diff --git a/libavfilter/formats.c b/libavfilter/formats.c
index 4e101c5..49977c5 100644
--- a/libavfilter/formats.c
+++ b/libavfilter/formats.c
@@ -20,6 +20,7 @@
  */
 
 #include "libavutil/pixdesc.h"
+#include "libavutil/audioconvert.h"
 #include "avfilter.h"
 
 /**
@@ -139,6 +140,27 @@ AVFilterFormats *avfilter_all_formats(enum AVMediaType type)
     return ret;
 }
 
+AVFilterFormats *avfilter_all_channel_layouts(void)
+{
+    static int64_t chlayouts[] = {
+        AV_CH_LAYOUT_MONO,
+        AV_CH_LAYOUT_STEREO,
+        AV_CH_LAYOUT_4POINT0,
+        AV_CH_LAYOUT_QUAD,
+        AV_CH_LAYOUT_5POINT0,
+        AV_CH_LAYOUT_5POINT0_BACK,
+        AV_CH_LAYOUT_5POINT1,
+        AV_CH_LAYOUT_5POINT1_BACK,
+        AV_CH_LAYOUT_5POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX,
+        AV_CH_LAYOUT_7POINT1,
+        AV_CH_LAYOUT_7POINT1_WIDE,
+        AV_CH_LAYOUT_7POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX,
+        -1,
+    };
+
+    return avfilter_make_format64_list(chlayouts);
+}
+
 void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
 {
     *ref = f;
-- 
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