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[gegl/wip/rishi/insta] Add Instagram filters - 1977 and Brannan

commit 36e75e7754a8777d7f6bed08503b74c29770cc20
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Jan 29 08:08:29 2015 +0100

    Add Instagram filters - 1977 and Brannan
    
    Based on:
    http://matthewruddy.github.io/jQuery-filter.me/
    https://github.com/jonnor/imgflo-server/tree/master/graphs
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743681

 operations/workshop/Makefile.am     |    2 +
 operations/workshop/insta-1977.c    |  159 +++++++++++++++++++++++++++++++
 operations/workshop/insta-brannan.c |  177 +++++++++++++++++++++++++++++++++++
 po/POTFILES.in                      |    1 +
 4 files changed, 339 insertions(+), 0 deletions(-)
---
diff --git a/operations/workshop/Makefile.am b/operations/workshop/Makefile.am
index 0463347..f6af382 100644
--- a/operations/workshop/Makefile.am
+++ b/operations/workshop/Makefile.am
@@ -25,6 +25,8 @@ op_LTLIBRARIES =    \
        gblur-1d.la \
        hstack.la \
        ink-simulator.la \
+       insta-1977.la \
+       insta-brannan.la \
        kuwahara.la \
        mandelbrot.la \
        rawbayer-load.la \
diff --git a/operations/workshop/insta-1977.c b/operations/workshop/insta-1977.c
new file mode 100644
index 0000000..7b89921
--- /dev/null
+++ b/operations/workshop/insta-1977.c
@@ -0,0 +1,159 @@
+/* This file is an image processing operation for GEGL
+ *
+ * GEGL is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * GEGL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2015 Red Hat, Inc.
+ */
+
+#include "config.h"
+#include <glib/gi18n-lib.h>
+
+#ifdef GEGL_PROPERTIES
+
+/* This operation has no properties */
+
+#else
+
+#define GEGL_OP_POINT_FILTER
+#define GEGL_OP_C_FILE "insta-1977.c"
+
+#include "gegl-op.h"
+
+static const guint8 nine_a[] =
+  {
+    0,1,3,4,6,7,9,10,12,13,14,16,17,19,20,22,23,25,26,28,29,31,32,34,35,37,
+    38,39,41,42,44,45,46,48,49,50,52,53,54,55,57,58,59,60,61,62,64,65,66,67,
+    68,69,70,72,73,74,75,76,77,78,79,80,81,82,84,85,86,87,88,89,90,91,92,93,
+    94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,
+    113,114,115,116,117,118,119,120,121,122,123,124,125,125,126,127,128,129,
+    130,131,132,133,134,135,136,137,137,138,139,140,141,142,143,144,145,146,
+    146,147,148,149,150,151,152,153,153,154,155,156,157,158,159,160,160,161,
+    162,163,164,165,166,166,167,168,169,170,171,172,172,173,174,175,176,177,
+    178,178,179,180,181,182,183,183,184,185,186,187,188,188,189,190,191,192,
+    193,193,194,195,196,197,198,199,199,200,201,202,203,204,204,205,206,207,
+    208,209,209,210,211,212,213,214,215,215,216,217,218,219,220,221,221,222,
+    223,224,225,226,227,227,228,229,230,231,232,233,233,234,235,236,237,238,
+    239,240,241,241,242,243,244,245,246,247,248,249,250,250,251,252,253,254,
+    255,255
+  };
+
+static const guint8 nine_r[] =
+  {
+    58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,58,
+    58,58,58,58,58,58,58,58,59,60,60,61,62,62,63,63,64,64,65,66,66,67,67,68,
+    69,69,70,70,71,72,72,73,74,74,75,76,77,77,78,79,80,81,82,83,84,85,86,87,
+    88,89,90,91,92,93,95,96,97,98,99,100,102,103,104,105,106,108,109,110,111,
+    112,113,114,116,117,118,119,120,121,122,123,125,126,127,128,129,130,131,
+    133,134,135,136,137,138,140,141,142,143,144,146,147,148,149,151,152,153,
+    154,156,157,158,160,161,162,164,165,166,168,169,170,172,173,175,176,177,
+    179,180,182,183,185,186,188,189,191,192,193,194,196,197,198,199,200,201,
+    202,203,204,204,205,206,206,207,208,208,209,209,210,210,211,211,212,212,
+    212,213,213,213,213,213,214,214,214,214,214,214,214,214,214,214,215,215,
+    215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,
+    215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,215,214,214,
+    214,214,214,214,214,214,214,214,213,213,213,213,213,213,213,212,212,212,
+    212,212
+  };
+
+static const guint8 nine_g[] =
+  {
+    40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,40,
+    40,40,40,40,40,40,40,40,40,40,41,41,42,42,42,42,43,43,43,43,44,44,44,44,
+    45,45,45,45,46,46,46,47,47,48,48,48,49,49,50,50,51,52,52,53,54,54,55,56,
+    57,58,59,60,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
+    80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,
+    103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,
+    121,122,123,124,125,126,127,128,129,130,131,132,132,133,134,135,136,137,
+    138,139,140,141,142,143,144,145,146,147,148,149,150,151,153,154,155,156,
+    157,158,160,161,162,163,164,166,167,168,169,171,172,173,174,175,176,178,
+    179,180,181,182,183,185,186,187,188,189,190,191,192,193,195,196,197,198,
+    199,200,201,202,203,205,206,207,208,209,210,211,212,214,215,216,217,218,
+    220,221,222,223,225,226,227,228,230,231,232,233,235,236,237,239,240,241,
+    242,244,245,246,247,249,250,251,252,254,255,255
+  };
+
+static const guint8 nine_b[] =
+  {
+    45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,
+    45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,45,46,46,47,47,47,48,48,48,
+    48,49,49,49,50,50,50,51,51,51,52,52,53,53,54,54,55,56,56,57,58,59,60,61,
+    62,62,63,64,65,66,68,69,70,71,72,73,74,75,76,77,79,80,81,82,83,84,85,86,
+    87,89,90,91,92,93,94,96,97,98,99,100,102,103,104,105,107,108,109,110,112,
+    113,114,115,117,118,119,120,122,123,124,126,127,128,130,131,133,134,135,
+    137,138,140,141,143,144,145,147,148,149,151,152,153,155,156,157,159,160,
+    161,162,164,165,166,167,168,170,171,172,173,174,175,176,177,178,179,180,
+    181,182,184,185,186,187,188,188,189,190,191,192,193,193,194,195,195,196,
+    196,196,197,197,197,197,198,198,198,198,198,198,198,198,198,199,199,199,
+    199,199,199,199,199,199,199,199,199,199,199,199,199,199,199,199,199,199,
+    199,199,199,199,199,198,198,198,198,198,198,197,197,197,197,197,197,197,
+    197,197,197,197,197,197,197,198,198,198,198,198,198,198
+  };
+
+static void
+gegl_insta_1977_prepare (GeglOperation *operation)
+{
+  gegl_operation_set_format (operation, "input",
+                             babl_format ("R'G'B' u8"));
+  gegl_operation_set_format (operation, "output",
+                             babl_format ("R'G'B' u8"));
+}
+
+static gboolean
+gegl_insta_1977_process (GeglOperation       *operation,
+                         void                *in_buf,
+                         void                *out_buf,
+                         glong                n_pixels,
+                         const GeglRectangle *roi,
+                         gint                 level)
+{
+  guint8 *dest =out_buf;
+  guint8 *src = in_buf;
+  glong   i;
+
+  for (i = 0; i < n_pixels; i++)
+    {
+      const glong offset = i * 3;
+
+      dest[offset + 0] = nine_r[src[offset + 0]];
+      dest[offset + 1] = nine_g[src[offset + 1]];
+      dest[offset + 2] = nine_b[src[offset + 2]];
+
+      dest[offset + 0] = nine_a[dest[offset + 0]];
+      dest[offset + 1] = nine_a[dest[offset + 1]];
+      dest[offset + 2] = nine_a[dest[offset + 2]];
+    }
+
+  return TRUE;
+}
+
+static void
+gegl_op_class_init (GeglOpClass *klass)
+{
+  GeglOperationClass            *operation_class;
+  GeglOperationPointFilterClass *point_filter_class;
+
+  operation_class    = GEGL_OPERATION_CLASS (klass);
+  point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
+
+  operation_class->prepare    = gegl_insta_1977_prepare;
+  point_filter_class->process = gegl_insta_1977_process;
+
+  gegl_operation_class_set_keys (operation_class,
+    "name",        "gegl:insta-1977",
+    "title",       _("Instagram's 1977 filter"),
+    "categories",  "enhance",
+    NULL);
+}
+
+#endif
diff --git a/operations/workshop/insta-brannan.c b/operations/workshop/insta-brannan.c
new file mode 100644
index 0000000..c1485a1
--- /dev/null
+++ b/operations/workshop/insta-brannan.c
@@ -0,0 +1,177 @@
+/* This file is an image processing operation for GEGL
+ *
+ * GEGL is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * GEGL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2015 Red Hat, Inc.
+ */
+
+#include "config.h"
+#include <glib/gi18n-lib.h>
+
+#ifdef GEGL_PROPERTIES
+
+/* This operation has no properties */
+
+#else
+
+#define GEGL_OP_POINT_FILTER
+#define GEGL_OP_C_FILE "insta-brannan.c"
+
+#include "gegl-op.h"
+#include <stdio.h>
+
+static const guint8 brannan_a[] =
+  {
+    0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,
+    27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,
+    51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,
+    75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,
+    99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,
+    117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,
+    135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,
+    153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,
+    171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,
+    189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,
+    207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,
+    225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,
+    243,244,245,246,247,248,249,250,251,252,253,254,255,255
+  };
+
+static const guint8 brannan_r[] =
+  {
+    50,50,50,50,50,50,50,50,50,50,50,50,50,51,51,51,51,51,52,53,54,55,56,57,
+    59,60,62,63,64,66,67,68,69,70,71,71,72,73,73,74,75,75,76,76,77,77,78,78,
+    79,79,80,80,81,81,82,83,83,84,85,86,87,88,88,89,90,91,92,93,94,95,96,97,
+    98,99,100,101,102,103,104,105,106,107,108,109,111,112,113,114,115,116,
+    118,119,120,121,122,124,125,126,128,129,130,132,133,134,136,137,139,140,
+    141,143,144,146,147,149,150,152,153,154,156,157,159,160,162,163,164,166,
+    167,169,170,171,173,174,175,177,178,179,181,182,183,185,186,187,189,190,
+    192,193,195,196,198,199,201,203,204,206,207,209,210,212,213,215,216,217,
+    219,220,221,223,224,225,226,227,228,229,230,231,232,233,234,235,236,236,
+    237,238,239,239,240,241,241,242,243,243,244,244,245,246,246,247,247,248,
+    248,249,249,249,250,250,251,251,251,252,252,252,253,253,253,254,254,254,
+    254,254,254,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
+    255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,254,
+    254,254,254,254,254
+  };
+
+static const guint8 brannan_g[] =
+  {
+    0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,2,2,2,3,4,4,5,6,7,8,10,11,12,13,14,16,17,
+    18,19,20,21,23,24,25,26,27,28,29,30,32,33,34,35,36,38,39,40,41,43,44,45,
+    47,48,50,51,53,54,56,57,59,61,62,64,66,68,70,72,74,76,78,80,82,84,87,89,
+    91,93,95,97,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,
+    130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,161,163,
+    165,167,168,170,172,173,175,176,178,179,181,182,183,184,186,187,188,189,
+    190,191,192,193,193,194,195,196,196,197,198,198,199,200,200,201,202,202,
+    203,203,204,204,205,205,206,207,207,208,208,209,210,210,211,212,212,213,
+    214,214,215,216,217,217,218,219,219,220,221,221,222,222,223,224,224,225,
+    225,226,226,227,228,228,229,229,229,230,230,231,231,232,232,233,233,233,
+    234,234,234,235,235,236,236,236,237,237,237,238,238,239,239,239,240,240,
+    240,241,241,241,242,242,242,243,243,243,244,244,244,245,245,245,246,246,
+    247,247,247,248,248,249,249,250,250,251,251,252,252,252
+  };
+
+static const guint8 brannan_b[] =
+  {
+    48,48,48,48,48,48,48,48,49,49,49,49,49,49,49,50,50,50,51,51,51,52,52,53,
+    53,54,54,54,55,55,56,56,57,57,58,58,59,60,60,61,61,62,62,63,64,64,65,66,
+    66,67,68,68,69,70,71,71,72,73,74,75,75,76,77,78,79,80,81,82,83,84,85,86,
+    87,88,89,90,92,93,94,95,96,98,99,100,101,102,103,105,106,107,108,109,110,
+    111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,
+    129,130,131,132,132,133,134,135,136,137,138,139,140,141,141,142,143,144,
+    145,146,146,147,148,148,149,150,151,151,152,153,154,155,156,157,158,159,
+    160,161,162,163,164,165,166,168,169,170,171,172,173,174,175,176,177,178,
+    178,179,180,181,181,182,183,183,184,184,185,185,185,186,186,187,187,187,
+    188,188,188,189,189,190,190,191,191,192,193,193,194,195,195,196,197,198,
+    199,200,200,201,202,203,204,205,206,206,207,208,209,210,211,211,212,213,
+    214,214,215,216,216,217,218,218,219,219,220,220,221,222,222,222,223,223,
+    224,224,224,225,225,225,225,225,225,225,225,225,225,225,225,225,225,225,
+    225,225
+  };
+
+static void
+gegl_insta_brannan_prepare (GeglOperation *operation)
+{
+  gegl_operation_set_format (operation, "input",
+                             babl_format ("R'G'B' u8"));
+  gegl_operation_set_format (operation, "output",
+                             babl_format ("R'G'B' u8"));
+}
+
+static gboolean
+gegl_insta_brannan_process (GeglOperation       *operation,
+                            void                *in_buf,
+                            void                *out_buf,
+                            glong                n_pixels,
+                            const GeglRectangle *roi,
+                            gint                 level)
+{
+  guint8 *dest = out_buf;
+  guint8 *src = in_buf;
+  glong   i;
+
+  for (i = 0; i < n_pixels; i++)
+    {
+      const gfloat level = 0.1;
+      const glong offset = i * 3;
+      guint max;
+
+      dest[offset + 0] = brannan_r[src[offset + 0]];
+      dest[offset + 1] = brannan_g[src[offset + 1]];
+      dest[offset + 2] = brannan_b[src[offset + 2]];
+
+      dest[offset + 0] = brannan_a[dest[offset + 0]];
+      dest[offset + 1] = brannan_a[dest[offset + 1]];
+      dest[offset + 2] = brannan_a[dest[offset + 2]];
+
+      max = (dest[offset + 0] > dest[offset + 1]) ? 0 : 1;
+      max = (dest[offset + max] > dest[offset + 2]) ? max : 2;
+
+      if (max != 0)
+        dest[offset + 0] +=
+          (guint8) ((dest[offset + max] - dest[offset + 0]) * level + 0.5);
+
+      if (max != 1)
+        dest[offset + 1] +=
+          (guint8) ((dest[offset + max] - dest[offset + 1]) * level + 0.5);
+
+      if (max != 2)
+        dest[offset + 2] +=
+          (guint8) ((dest[offset + max] - dest[offset + 2]) * level + 0.5);
+    }
+
+  return TRUE;
+}
+
+static void
+gegl_op_class_init (GeglOpClass *klass)
+{
+  GeglOperationClass            *operation_class;
+  GeglOperationPointFilterClass *point_filter_class;
+
+  operation_class    = GEGL_OPERATION_CLASS (klass);
+  point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
+
+  operation_class->prepare    = gegl_insta_brannan_prepare;
+  point_filter_class->process = gegl_insta_brannan_process;
+
+  gegl_operation_class_set_keys (operation_class,
+    "name",        "gegl:insta-brannan",
+    "title",       _("Instagram's Brannan filter"),
+    "categories",  "enhance",
+    NULL);
+}
+
+#endif
diff --git a/po/POTFILES.in b/po/POTFILES.in
index d187d4e..a4fc209 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -225,6 +225,7 @@ operations/workshop/generated/subtractive.c
 operations/workshop/gradient-map.c
 operations/workshop/hstack.c
 operations/workshop/ink-simulator.c
+operations/workshop/insta-brannan.c
 operations/workshop/kuwahara.c
 operations/workshop/mandelbrot.c
 operations/workshop/rawbayer-load.c
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