1 files changed, 117 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/lib/jpeg/grey.c b/contrib/syslinux-4.02/com32/lib/jpeg/grey.c
new file mode 100644
index 0000000..6710ede
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/lib/jpeg/grey.c
@@ -0,0 +1,117 @@
+/*
+ * Small jpeg decoder library
+ *
+ * Copyright (c) 2006, Luc Saillard <luc@saillard.org>
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ *  this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *  this list of conditions and the following disclaimer in the documentation
+ *  and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the author nor the names of its contributors may be
+ *  used to endorse or promote products derived from this software without
+ *  specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "tinyjpeg.h"
+#include "tinyjpeg-internal.h"
+
+/**
+ *  YCrCb -> Grey (1x1, 1x2)
+ *  .---.
+ *  | 1 |
+ *  `---'
+ */
+static void YCrCB_to_Grey_1xN(struct jdec_private *priv, int sx, int sy)
+{
+  const unsigned char *y;
+  unsigned char *p;
+  unsigned int i;
+  int offset_to_next_row;
+
+  p = priv->plane[0];
+  y = priv->Y;
+  offset_to_next_row = priv->bytes_per_row[0];
+
+  for (i = sy; i > 0; i--) {
+     memcpy(p, y, sx);
+     y += 8;
+     p += offset_to_next_row;
+  }
+}
+
+/**
+ *  YCrCb -> Grey (2x1, 2x2)
+ *  .-------.
+ *  | 1 | 2 |
+ *  `-------'
+ */
+static void YCrCB_to_Grey_2xN(struct jdec_private *priv, int sx, int sy)
+{
+  const unsigned char *y;
+  unsigned char *p;
+  unsigned int i;
+  int offset_to_next_row;
+
+  p = priv->plane[0];
+  y = priv->Y;
+  offset_to_next_row = priv->bytes_per_row[0];
+
+  for (i = sy; i > 0; i--) {
+     memcpy(p, y, sx);
+     y += 16;
+     p += offset_to_next_row;
+  }
+}
+
+static int initialize_grey(struct jdec_private *priv,
+			   unsigned int *bytes_per_blocklines,
+			   unsigned int *bytes_per_mcu)
+{
+  if (!priv->bytes_per_row[0])
+    priv->bytes_per_row[0] = priv->width;
+  if (!priv->components[0])
+    priv->components[0] = malloc(priv->height * priv->bytes_per_row[0]);
+
+  bytes_per_blocklines[0] = priv->bytes_per_row[0] << 3;
+  bytes_per_mcu[0] = 8;
+
+  return !priv->components[0];
+}
+
+static const struct tinyjpeg_colorspace format_grey =
+  {
+    {
+      YCrCB_to_Grey_1xN,
+      YCrCB_to_Grey_1xN,
+      YCrCB_to_Grey_2xN,
+      YCrCB_to_Grey_2xN,
+    },
+    tinyjpeg_decode_mcu_1comp_table,
+    initialize_grey
+  };
+
+const tinyjpeg_colorspace_t TINYJPEG_FMT_GREY = &format_grey;