blackfin optimized vp3 transform and infastructure for idct

Originally committed as revision 10667 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 49 insertions, 0 deletions

diff --git a/libavcodec/bfin/vp3_bfin.c b/libavcodec/bfin/vp3_bfin.c
new file mode 100644
index 0000000000..cb30e4de5f
--- /dev/null
+++ b/libavcodec/bfin/vp3_bfin.c
@@ -0,0 +1,49 @@
+/*
+ * This file is part of FFmpeg.
+ * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
+ *
+ * FFmpeg 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 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "dsputil_bfin.h"
+
+extern void ff_bfin_vp3_idct (DCTELEM *block) attribute_l1_text;
+extern void ff_bfin_idct (DCTELEM *block) attribute_l1_text;
+extern void ff_bfin_add_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) attribute_l1_text;
+extern void ff_bfin_put_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) attribute_l1_text;
+
+/* Intra iDCT offset 128 */
+void ff_bfin_vp3_idct_put (uint8_t *dest, int line_size, DCTELEM *block)
+{
+    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+    int i,j;
+
+    ff_bfin_vp3_idct (block);
+
+    for (i=0;i<8;i++)
+        for (j=0;j<8;j++)
+            dest[line_size*i+j]=cm[128+block[i*8+j]];
+}
+
+/* Inter iDCT */
+void ff_bfin_vp3_idct_add (uint8_t *dest, int line_size, DCTELEM *block)
+{
+    ff_bfin_vp3_idct (block);
+    ff_bfin_add_pixels_clamped (block, dest, line_size);
+}
+
+