X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=bigscreen%2Ftinyptc%2Fconvert.c;fp=bigscreen%2Ftinyptc%2Fconvert.c;h=8ea7a35715fe94229bd64c9d09de2b1bbf8965cd;hb=140a0aae7299d15459fe9ec74ad5020887e0a960;hp=0000000000000000000000000000000000000000;hpb=fd56777b1051147ba14850b72f1f959cd82a1827;p=ccbs

diff --git a/bigscreen/tinyptc/convert.c b/bigscreen/tinyptc/convert.c
new file mode 100644
index 0000000..8ea7a35
--- /dev/null
+++ b/bigscreen/tinyptc/convert.c
@@ -0,0 +1,267 @@
+/*
+ * TinyPTC x11 v0.7.3 Pixelformat converters
+ * Copyright (C) 2000-2002 Alessandro Gatti <a.gatti@tiscali.it>
+ * Copyright (C) 2000-2001 Glenn Fiedler <gaffer@gaffer.org>
+ *
+ * http://www.sourceforge.net/projects/tinyptc/
+ *
+ * This library 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 2 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 
+ */
+
+#include "convert.h"
+#include "mmx.h"
+#include <string.h>
+
+#ifdef __PTC_CONVERTER_32_TO_32_RGB888
+void
+ptc_convert_32_to_32_rgb888 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_memcpy (dst, src, pixels * 4);
+#else
+#ifdef __PTC_MEMCPY__
+  memcpy (dst, src, pixels * 4);
+#else
+  int32 *p = (int32 *) src;
+  int32 *q = (int32 *) dst;
+  while (pixels--)
+    {
+      *(q++) = *(p++);
+    }
+#endif /* __PTC_MEMCPY__ */
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_32_RGB888 */
+
+#ifdef __PTC_CONVERTER_32_TO_32_BGR888
+void
+ptc_convert_32_to_32_bgr888 (void *src, void *dst, int pixels)
+{
+  int32 *p = (int32 *) src;
+  int32 *q = (int32 *) dst;
+  while (pixels--)
+    {
+#ifdef __PTC_LITTLE_ENDIAN__
+      int32 r = (int32) ((*p & 0x00FF0000) << 8);
+      int32 g = (int32) ((*p & 0x0000FF00) << 8);
+      int32 b = (int32) ((*p & 0x000000FF) << 8);
+#else
+      int32 r = (int32) ((*p & 0x00FF0000) >> 16);
+      int32 g = (int32) ((*p & 0x0000FF00));
+      int32 b = (int32) ((*p & 0x000000FF) << 16);
+#endif /* __PTC_LITTLE_ENDIAN__ */
+      *(q++) = r | g | b;
+      p++;
+    }
+}
+#endif /* __PTC_CONVERTER_32_TO_32_BGR888 */
+
+#ifdef __PTC_CONVERTER_32_TO_24_RGB888
+void
+ptc_convert_32_to_24_rgb888 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_24_rgb888 (dst, src, pixels);
+#else
+  char8 *p = (char8 *) src;
+  char8 *q = (char8 *) dst;
+  while (pixels--)
+    {
+#ifdef __PTC_LITTLE_ENDIAN__
+      *q = *p;
+      *(q + 1) = *(p + 1);
+      *(q + 2) = *(p + 2);
+#else
+      *(q + 2) = *p;
+      *(q + 1) = *(p + 1);
+      *q = *(p + 2);
+#endif /* __PTC_LITTLE_ENDIAN__ */
+      p += 4;
+      q += 3;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_24_RGB888 */
+
+#ifdef __PTC_CONVERTER_32_TO_24_BGR888
+void
+ptc_convert_32_to_24_bgr888 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_24_bgr888 (dst, src, pixels);
+#else
+  char8 *p = (char8 *) src;
+  char8 *q = (char8 *) dst;
+  while (pixels--)
+    {
+#ifdef __PTC_LITTLE_ENDIAN__
+      *(q + 2) = *p;
+      *(q + 1) = *(p + 1);
+      *q = *(p + 2);
+#else
+      *q = *p;
+      *(q + 1) = *(p + 1);
+      *(q + 2) = *(p + 2);
+#endif /* __PTC_LITTLE_ENDIAN__ */
+      p += 4;
+      q += 3;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_24_BGR888 */
+
+#ifdef __PTC_CONVERTER_32_TO_16_RGB565
+void
+ptc_convert_32_to_16_rgb565 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_16_rgb565 (dst, src, pixels);
+#else
+  int32 *p = (int32 *) src;
+  short16 *q = (short16 *) dst;
+  while (pixels--)
+    {
+      short16 r = (short16) ((*p & 0x00F80000) >> 8);
+      short16 g = (short16) ((*p & 0x0000FC00) >> 5);
+      short16 b = (short16) ((*p & 0x000000F8) >> 3);
+      *q = r | g | b;
+      p++;
+      q++;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_16_RGB565 */
+
+#ifdef __PTC_CONVERTER_32_TO_16_BGR565
+void
+ptc_convert_32_to_16_bgr565 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_16_bgr565 (dst, src, pixels);
+#else
+  int32 *p = (int32 *) src;
+  short16 *q = (short16 *) dst;
+  while (pixels--)
+    {
+      short16 r = (short16) ((*p & 0x00F80000) >> 19);
+      short16 g = (short16) ((*p & 0x0000FC00) >> 5);
+      short16 b = (short16) ((*p & 0x000000F8) << 8);
+      *q = r | g | b;
+      p++;
+      q++;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_16_RGB565 */
+
+#ifdef __PTC_CONVERTER_32_TO_16_RGB555
+void
+ptc_convert_32_to_16_rgb555 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_16_rgb555 (dst, src, pixels);
+#else
+  int32 *p = (int32 *) src;
+  short16 *q = (short16 *) dst;
+  while (pixels--)
+    {
+      short16 r = (short16) ((*p & 0x00F80000) >> 9);
+      short16 g = (short16) ((*p & 0x0000F800) >> 6);
+      short16 b = (short16) ((*p & 0x000000F8) >> 3);
+      *q = r | g | b;
+      p++;
+      q++;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_16_RGB555 */
+
+#ifdef __PTC_CONVERTER_32_TO_16_BGR555
+void
+ptc_convert_32_to_16_bgr555 (void *src, void *dst, int pixels)
+{
+#ifdef __PTC_MMX__
+  mmx_convert_32_to_16_bgr555 (dst, src, pixels);
+#else
+  int32 *p = (int32 *) src;
+  short16 *q = (short16 *) dst;
+  while (pixels--)
+    {
+      short16 r = (short16) ((*p & 0x00F80000) >> 20);
+      short16 g = (short16) ((*p & 0x0000F800) >> 6);
+      short16 b = (short16) ((*p & 0x000000F8) << 8);
+      *q = r | g | b;
+      p++;
+      q++;
+    }
+#endif /* __PTC_MMX__ */
+}
+#endif /* __PTC_CONVERTER_32_TO_16_BGR555 */
+
+PTC_CONVERTER
+ptc_request_converter (int bits, int32 r, int32 g, int32 b)
+{
+  /* 32bit RGB888 -> 32bit RGB888 */
+#ifdef __PTC_CONVERTER_32_TO_32_RGB888
+  if (bits == 32 && r == 0x00FF0000 && g == 0x0000FF00 && b == 0x000000FF)
+    return &ptc_convert_32_to_32_rgb888;
+#endif
+
+  /* 32bit RGB888 -> 32bit BGR888 */
+#ifdef __PTC_CONVERTER_32_TO_32_BGR888
+  if (bits == 32 && r == 0x000000FF && g == 0x0000FF00 && b == 0x00FF0000)
+    return &ptc_convert_32_to_32_bgr888;
+#endif
+
+  /* 32bit RGB888 -> 24bit RGB888 */
+#ifdef __PTC_CONVERTER_32_TO_24_RGB888
+  if (bits == 24 && r == 0x00FF0000 && g == 0x0000FF00 && b == 0x000000FF)
+    return &ptc_convert_32_to_24_rgb888;
+#endif
+
+  /* 32bit RGB888 -> 24bit BGR888 */
+#ifdef __PTC_CONVERTER_32_TO_24_BGR888
+  if (bits == 24 && r == 0x000000FF && g == 0x0000FF00 && b == 0x00FF0000)
+    return &ptc_convert_32_to_24_bgr888;
+#endif
+
+  /* 32bit RGB888 -> 16bit RGB565 */
+#ifdef __PTC_CONVERTER_32_TO_16_RGB565
+  if (bits == 16 && r == 0xF800 && g == 0x07E0 && b == 0x001F)
+    return &ptc_convert_32_to_16_rgb565;
+#endif
+
+  /* 32bit RGB888 -> 16bit BGR565 */
+#ifdef __PTC_CONVERTER_32_TO_16_BGR565
+  if (bits == 16 && r == 0x001F && g == 0x07E0 && b == 0xF800)
+    return &ptc_convert_32_to_16_bgr565;
+#endif
+
+  /* 32bit RGB888 -> 16bit RGB555 */
+#ifdef __PTC_CONVERTER_32_TO_16_RGB555
+  if (bits == 16 && r == 0x7C00 && g == 0x03E0 && b == 0x001F)
+    return &ptc_convert_32_to_16_rgb555;
+#endif
+
+  /* 32bit RGB888 -> 16bit BGR555 */
+#ifdef __PTC_CONVERTER_32_TO_16_BGR555
+  if (bits == 16 && r == 0x001F && g == 0x03E0 && b == 0x7C00)
+    return &ptc_convert_32_to_16_bgr555;
+#endif
+
+  /* failure */
+  return 0;
+}