From 15bd1837435f64f6b33300db718fe6f02a73d9ee Mon Sep 17 00:00:00 2001
From: sam <sam@92316355-f0b4-4df1-b90c-862c8a59935f>
Date: Sat, 23 Aug 2008 09:11:20 +0000
Subject: [PATCH]   * Rename --rgb into --combine and add --split. Basic
 per-channel operations     are now possible:       pipi src.png --split
 --contrast -.2 --combine -o dest.png

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2755 92316355-f0b4-4df1-b90c-862c8a59935f
---
 pipi/context.c | 15 ++++++++++++++-
 src/pipi.c     |  9 +++++++--
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/pipi/context.c b/pipi/context.c
index e04c59a..0435d06 100644
--- a/pipi/context.c
+++ b/pipi/context.c
@@ -373,7 +373,20 @@ int pipi_command(pipi_context_t *ctx, char const *cmd, ...)
         ctx->images[ctx->nimages - 1] = pipi_rotate270(tmp);
         pipi_free(tmp);
     }
-    else if(!strcmp(cmd, "rgb"))
+    else if(!strcmp(cmd, "split"))
+    {
+        pipi_image_t *src;
+
+        if(ctx->nimages < 1)
+            return -1;
+        src = ctx->images[ctx->nimages - 1];
+        ctx->nimages += 2;
+        ctx->images[ctx->nimages - 3] = pipi_red(src);
+        ctx->images[ctx->nimages - 2] = pipi_green(src);
+        ctx->images[ctx->nimages - 1] = pipi_blue(src);
+        pipi_free(src);
+    }
+    else if(!strcmp(cmd, "combine"))
     {
         pipi_image_t *dst;
 
diff --git a/src/pipi.c b/src/pipi.c
index 986f1b8..fabde16 100644
--- a/src/pipi.c
+++ b/src/pipi.c
@@ -168,9 +168,14 @@ int main(int argc, char *argv[])
             if(pipi_command(ctx, "wrap") != 0)
                 return EXIT_FAILURE;
         }
-        else if(!strcmp(argv[0], "--rgb"))
+        else if(!strcmp(argv[0], "--combine"))
         {
-            if(pipi_command(ctx, "rgb") != 0)
+            if(pipi_command(ctx, "combine") != 0)
+                return EXIT_FAILURE;
+        }
+        else if(!strcmp(argv[0], "--split"))
+        {
+            if(pipi_command(ctx, "split") != 0)
                 return EXIT_FAILURE;
         }
         else if(!strcmp(argv[0], "--mean"))