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authorMichael Niedermayer <michaelni@gmx.at>2004-07-25 23:36:44 +0000
committerMichael Niedermayer <michaelni@gmx.at>2004-07-25 23:36:44 +0000
commit791e7b83c3ab18f0d00e2ecdb72a3409dfc1ae62 (patch)
tree71fa67f3552876dbe9b5fdc63c39c3fa4b1388dc /libavcodec/snow.c
parent53e2f9caf80ed385a3d4cfb9200d8827b65580ef (diff)
my experimental wavelet codec
note, this is far from finished, dont expect todays encodings to be decodeable with cvs tomorrow ... Originally committed as revision 3341 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/snow.c')
-rw-r--r--libavcodec/snow.c3052
1 files changed, 3052 insertions, 0 deletions
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
new file mode 100644
index 0000000000..ab08983ece
--- /dev/null
+++ b/libavcodec/snow.c
@@ -0,0 +1,3052 @@
+/*
+ * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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 "avcodec.h"
+#include "common.h"
+#include "dsputil.h"
+#include "cabac.h"
+
+#include "mpegvideo.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+#define MAX_DECOMPOSITIONS 8
+#define MAX_PLANES 4
+#define DWTELEM int
+#define QROOT 8
+
+static const int8_t quant3[256]={
+ 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0,
+};
+static const int8_t quant3b[256]={
+ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
+};
+static const int8_t quant5[256]={
+ 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1,
+};
+static const int8_t quant7[256]={
+ 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
+-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,
+};
+static const int8_t quant9[256]={
+ 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,
+-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1,
+};
+static const int8_t quant11[256]={
+ 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
+ 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
+-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1,
+};
+static const int8_t quant13[256]={
+ 0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
+ 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
+-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
+-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
+-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
+-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
+-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
+};
+
+#define OBMC_MAX 64
+#if 0 //64*cubic
+static const uint8_t obmc32[1024]={
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
+ 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
+ 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0,
+ 0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0,
+ 0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0,
+ 0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0,
+ 0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0,
+ 0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0,
+ 0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0,
+ 0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0,
+ 0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0,
+ 0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0,
+ 0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0,
+ 0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0,
+ 0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0,
+ 0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0,
+ 0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0,
+ 0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0,
+ 0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0,
+ 0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0,
+ 0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0,
+ 0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0,
+ 0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0,
+ 0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0,
+ 0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0,
+ 0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0,
+ 0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0,
+ 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0,
+ 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+//error:0.000022
+};
+static const uint8_t obmc16[256]={
+ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+ 0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0,
+ 0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0,
+ 0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0,
+ 0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0,
+ 0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0,
+ 1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1,
+ 1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1,
+ 1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1,
+ 1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1,
+ 0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0,
+ 0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0,
+ 0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0,
+ 0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0,
+ 0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0,
+ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+//error:0.000033
+};
+#elif 1 // 64*linear
+static const uint8_t obmc32[1024]={
+ 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+ 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
+ 0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
+ 1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
+ 1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
+ 1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
+ 1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
+ 1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
+ 1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
+ 1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
+ 1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
+ 2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
+ 2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
+ 2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
+ 2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
+ 2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
+ 2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
+ 2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
+ 2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
+ 1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
+ 1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
+ 1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
+ 1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
+ 1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
+ 1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
+ 1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
+ 1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
+ 0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
+ 0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
+ 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
+ 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+ //error:0.000020
+};
+static const uint8_t obmc16[256]={
+ 0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 0,
+ 1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
+ 1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
+ 2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
+ 2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
+ 3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
+ 3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
+ 4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
+ 4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
+ 3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
+ 3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
+ 2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
+ 2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
+ 1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
+ 1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
+ 0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 0,
+//error:0.000015
+};
+#else //64*cos
+static const uint8_t obmc32[1024]={
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
+ 0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0,
+ 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0,
+ 0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0,
+ 0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0,
+ 0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0,
+ 0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0,
+ 0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0,
+ 0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0,
+ 0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0,
+ 0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0,
+ 0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0,
+ 0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0,
+ 0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0,
+ 0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0,
+ 0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0,
+ 0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0,
+ 0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0,
+ 0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0,
+ 0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0,
+ 0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0,
+ 0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0,
+ 0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0,
+ 0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0,
+ 0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0,
+ 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0,
+ 0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0,
+ 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+//error:0.000022
+};
+static const uint8_t obmc16[256]={
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
+ 0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0,
+ 0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0,
+ 0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0,
+ 0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0,
+ 1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1,
+ 1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1,
+ 0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0,
+ 0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0,
+ 1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1,
+ 1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1,
+ 0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0,
+ 0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0,
+ 0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0,
+ 0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0,
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
+//error:0.000022
+};
+#endif
+
+
+typedef struct SubBand{
+ int level;
+ int stride;
+ int width;
+ int height;
+ int qlog; ///< log(qscale)/log[2^(1/6)]
+ DWTELEM *buf;
+ struct SubBand *parent;
+ uint8_t state[/*7*2*/ 7 + 512][32];
+}SubBand;
+
+typedef struct Plane{
+ int width;
+ int height;
+ SubBand band[MAX_DECOMPOSITIONS][4];
+}Plane;
+
+typedef struct SnowContext{
+// MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independant of MpegEncContext, so this will be removed then (FIXME/XXX)
+
+ AVCodecContext *avctx;
+ CABACContext c;
+ DSPContext dsp;
+ AVFrame input_picture;
+ AVFrame current_picture;
+ AVFrame last_picture;
+ AVFrame mconly_picture;
+// uint8_t q_context[16];
+ uint8_t header_state[32];
+ int keyframe;
+ int version;
+ int spatial_decomposition_type;
+ int temporal_decomposition_type;
+ int spatial_decomposition_count;
+ int temporal_decomposition_count;
+ DWTELEM *spatial_dwt_buffer;
+ DWTELEM *pred_buffer;
+ int colorspace_type;
+ int chroma_h_shift;
+ int chroma_v_shift;
+ int spatial_scalability;
+ int qlog;
+ int mv_scale;
+ int qbias;
+#define QBIAS_SHIFT 3
+ int b_width; //FIXME remove?
+ int b_height; //FIXME remove?
+ Plane plane[MAX_PLANES];
+ SubBand mb_band;
+ SubBand mv_band[2];
+
+ uint16_t *mb_type;
+ uint8_t *mb_mean;
+ uint32_t *dummy;
+ int16_t (*motion_val8)[2];
+ int16_t (*motion_val16)[2];
+ MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independant of MpegEncContext, so this will be removed then (FIXME/XXX)
+}SnowContext;
+
+#define QEXPSHIFT 7 //FIXME try to change this to 0
+static const uint8_t qexp[8]={
+ 128, 140, 152, 166, 181, 197, 215, 235
+// 64, 70, 76, 83, 91, 99, 108, 117
+// 32, 35, 38, 41, 45, 49, 54, 59
+// 16, 17, 19, 21, 23, 25, 27, 29
+// 8, 9, 10, 10, 11, 12, 13, 15
+};
+
+static inline int mirror(int v, int m){
+ if (v<0) return -v;
+ else if(v>m) return 2*m-v;
+ else return v;
+}
+
+static inline void put_symbol(CABACContext *c, uint8_t *state, int v, int is_signed){
+ int i;
+
+ if(v){
+ const int a= ABS(v);
+ const int e= av_log2(a);
+#if 1
+ const int el= FFMIN(e, 10);
+ put_cabac(c, state+0, 0);
+
+ for(i=0; i<el; i++){
+ put_cabac(c, state+1+i, 1); //1..10
+ }
+ for(; i<e; i++){
+ put_cabac(c, state+1+9, 1); //1..10
+ }
+ put_cabac(c, state+1+FFMIN(i,9), 0);
+
+ for(i=e-1; i>=el; i--){
+ put_cabac(c, state+22+9, (a>>i)&1); //22..31
+ }
+ for(; i>=0; i--){
+ put_cabac(c, state+22+i, (a>>i)&1); //22..31
+ }
+
+ if(is_signed)
+ put_cabac(c, state+11 + el, v < 0); //11..21
+#else
+
+ put_cabac(c, state+0, 0);
+ if(e<=9){
+ for(i=0; i<e; i++){
+ put_cabac(c, state+1+i, 1); //1..10
+ }
+ put_cabac(c, state+1+i, 0);
+
+ for(i=e-1; i>=0; i--){
+ put_cabac(c, state+22+i, (a>>i)&1); //22..31
+ }
+
+ if(is_signed)
+ put_cabac(c, state+11 + e, v < 0); //11..21
+ }else{
+ for(i=0; i<e; i++){
+ put_cabac(c, state+1+FFMIN(i,9), 1); //1..10
+ }
+ put_cabac(c, state+1+FFMIN(i,9), 0);
+
+ for(i=e-1; i>=0; i--){
+ put_cabac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
+ }
+
+ if(is_signed)
+ put_cabac(c, state+11 + FFMIN(e,10), v < 0); //11..21
+ }
+#endif
+ }else{
+ put_cabac(c, state+0, 1);
+ }
+}
+
+static inline int get_symbol(CABACContext *c, uint8_t *state, int is_signed){
+ if(get_cabac(c, state+0))
+ return 0;
+ else{
+ int i, e, a, el;
+ //FIXME try to merge loops with FFMIN() maybe they are equally fast and they are surly cuter
+ for(e=0; e<10; e++){
+ if(get_cabac(c, state + 1 + e)==0) // 1..10
+ break;
+ }
+ el= e;
+
+ if(e==10){
+ while(get_cabac(c, state + 1 + 9)) //10
+ e++;
+ }
+ a= 1;
+ for(i=e-1; i>=el; i--){
+ a += a + get_cabac(c, state+22+9); //31
+ }
+ for(; i>=0; i--){
+ a += a + get_cabac(c, state+22+i); //22..31
+ }
+
+ if(is_signed && get_cabac(c, state+11 + el)) //11..21
+ return -a;
+ else
+ return a;
+ }
+}
+
+static always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){
+ const int mirror_left= !highpass;
+ const int mirror_right= (width&1) ^ highpass;
+ const int w= (width>>1) - 1 + (highpass & width);
+ int i;
+
+#define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
+ if(mirror_left){
+ dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
+ dst += dst_step;
+ src += src_step;
+ }
+
+ for(i=0; i<w; i++){
+ dst[i*dst_step] = LIFT(src[i*src_step], ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift), inverse);
+ }
+
+ if(mirror_right){
+ dst[w*dst_step] = LIFT(src[w*src_step], ((mul*2*ref[w*ref_step]+add)>>shift), inverse);
+ }
+}
+
+static always_inline void lift5(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){
+ const int mirror_left= !highpass;
+ const int mirror_right= (width&1) ^ highpass;
+ const int w= (width>>1) - 1 + (highpass & width);
+ int i;
+
+ if(mirror_left){
+ int r= 3*2*ref[0];
+ r += r>>4;
+ r += r>>8;
+ dst[0] = LIFT(src[0], ((r+add)>>shift), inverse);
+ dst += dst_step;
+ src += src_step;
+ }
+
+ for(i=0; i<w; i++){
+ int r= 3*(ref[i*ref_step] + ref[(i+1)*ref_step]);
+ r += r>>4;
+ r += r>>8;
+ dst[i*dst_step] = LIFT(src[i*src_step], ((r+add)>>shift), inverse);
+ }
+
+ if(mirror_right){
+ int r= 3*2*ref[w*ref_step];
+ r += r>>4;
+ r += r>>8;
+ dst[w*dst_step] = LIFT(src[w*src_step], ((r+add)>>shift), inverse);
+ }
+}
+
+
+static void inplace_lift(int *dst, int width, int *coeffs, int n, int shift, int start, int inverse){
+ int x, i;
+
+ for(x=start; x<width; x+=2){
+ int64_t sum=0;
+
+ for(i=0; i<n; i++){
+ int x2= x + 2*i - n + 1;
+ if (x2< 0) x2= -x2;
+ else if(x2>=width) x2= 2*width-x2-2;
+ sum += coeffs[i]*(int64_t)dst[x2];
+ }
+ if(inverse) dst[x] -= (sum + (1<<shift)/2)>>shift;
+ else dst[x] += (sum + (1<<shift)/2)>>shift;
+ }
+}
+
+static void inplace_liftV(int *dst, int width, int height, int stride, int *coeffs, int n, int shift, int start, int inverse){
+ int x, y, i;
+ for(y=start; y<height; y+=2){
+ for(x=0; x<width; x++){
+ int64_t sum=0;
+
+ for(i=0; i<n; i++){
+ int y2= y + 2*i - n + 1;
+ if (y2< 0) y2= -y2;
+ else if(y2>=height) y2= 2*height-y2-2;
+ sum += coeffs[i]*(int64_t)dst[x + y2*stride];
+ }
+ if(inverse) dst[x + y*stride] -= (sum + (1<<shift)/2)>>shift;
+ else dst[x + y*stride] += (sum + (1<<shift)/2)>>shift;
+ }
+ }
+}
+
+#define SCALEX 1
+#define LX0 0
+#define LX1 1
+
+#if 1 // more accurate 9/7
+#define N1 2
+#define SHIFT1 14
+#define COEFFS1 (int[]){-25987,-25987}
+#define N2 2
+#define SHIFT2 19
+#define COEFFS2 (int[]){-27777,-27777}
+#define N3 2
+#define SHIFT3 15
+#define COEFFS3 (int[]){28931,28931}
+#define N4 2
+#define SHIFT4 15
+#define COEFFS4 (int[]){14533,14533}
+#elif 1 // 13/7 CRF
+#define N1 4
+#define SHIFT1 4
+#define COEFFS1 (int[]){1,-9,-9,1}
+#define N2 0
+#define SHIFT2 4
+#define COEFFS2 (int[]){-1,5,5,-1}
+#define N3 0
+#define SHIFT3 1
+#define COEFFS3 NULL
+#define N4 0
+#define SHIFT4 1
+#define COEFFS4 NULL
+#elif 1 // 3/5
+#define LX0 1
+#define LX1 0
+#define SCALEX 0.5
+#define N1 2
+#define SHIFT1 1
+#define COEFFS1 (int[]){1,1}
+#define N2 2
+#define SHIFT2 2
+#define COEFFS2 (int[]){-1,-1}
+#define N3 0
+#define SHIFT3 0
+#define COEFFS3 NULL
+#define N4 0
+#define SHIFT4 0
+#define COEFFS4 NULL
+#elif 1 // 11/5
+#define N1 0
+#define SHIFT1 1
+#define COEFFS1 NULL
+#define N2 2
+#define SHIFT2 2
+#define COEFFS2 (int[]){-1,-1}
+#define N3 2
+#define SHIFT3 0
+#define COEFFS3 (int[]){-1,-1}
+#define N4 4
+#define SHIFT4 7
+#define COEFFS4 (int[]){-5,29,29,-5}
+#define SCALEX 4
+#elif 1 // 9/7 CDF
+#define N1 2
+#define SHIFT1 7
+#define COEFFS1 (int[]){-203,-203}
+#define N2 2
+#define SHIFT2 12
+#define COEFFS2 (int[]){-217,-217}
+#define N3 2
+#define SHIFT3 7
+#define COEFFS3 (int[]){113,113}
+#define N4 2
+#define SHIFT4 9
+#define COEFFS4 (int[]){227,227}
+#define SCALEX 1
+#elif 1 // 7/5 CDF
+#define N1 0
+#define SHIFT1 1
+#define COEFFS1 NULL
+#define N2 2
+#define SHIFT2 2
+#define COEFFS2 (int[]){-1,-1}
+#define N3 2
+#define SHIFT3 0
+#define COEFFS3 (int[]){-1,-1}
+#define N4 2
+#define SHIFT4 4
+#define COEFFS4 (int[]){3,3}
+#elif 1 // 9/7 MN
+#define N1 4
+#define SHIFT1 4
+#define COEFFS1 (int[]){1,-9,-9,1}
+#define N2 2
+#define SHIFT2 2
+#define COEFFS2 (int[]){1,1}
+#define N3 0
+#define SHIFT3 1
+#define COEFFS3 NULL
+#define N4 0
+#define SHIFT4 1
+#define COEFFS4 NULL
+#else // 13/7 CRF
+#define N1 4
+#define SHIFT1 4
+#define COEFFS1 (int[]){1,-9,-9,1}
+#define N2 4
+#define SHIFT2 4
+#define COEFFS2 (int[]){-1,5,5,-1}
+#define N3 0
+#define SHIFT3 1
+#define COEFFS3 NULL
+#define N4 0
+#define SHIFT4 1
+#define COEFFS4 NULL
+#endif
+static void horizontal_decomposeX(int *b, int width){
+ int temp[width];
+ const int width2= width>>1;
+ const int w2= (width+1)>>1;
+ int A1,A2,A3,A4, x;
+
+ inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 0);
+ inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 0);
+ inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 0);
+ inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 0);
+
+ for(x=0; x<width2; x++){
+ temp[x ]= b[2*x ];
+ temp[x+w2]= b[2*x + 1];
+ }
+ if(width&1)
+ temp[x ]= b[2*x ];
+ memcpy(b, temp, width*sizeof(int));
+}
+
+static void horizontal_composeX(int *b, int width){
+ int temp[width];
+ const int width2= width>>1;
+ int A1,A2,A3,A4, x;
+ const int w2= (width+1)>>1;
+
+ memcpy(temp, b, width*sizeof(int));
+ for(x=0; x<width2; x++){
+ b[2*x ]= temp[x ];
+ b[2*x + 1]= temp[x+w2];
+ }
+ if(width&1)
+ b[2*x ]= temp[x ];
+
+ inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 1);
+ inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 1);
+ inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 1);
+ inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 1);
+}
+
+static void spatial_decomposeX(int *buffer, int width, int height, int stride){
+ int x, y;
+
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ buffer[y*stride + x] *= SCALEX;
+ }
+ }
+
+ for(y=0; y<height; y++){
+ horizontal_decomposeX(buffer + y*stride, width);
+ }
+
+ inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 0);
+ inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 0);
+ inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 0);
+ inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 0);
+}
+
+static void spatial_composeX(int *buffer, int width, int height, int stride){
+ int x, y;
+
+ inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 1);
+ inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 1);
+ inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 1);
+ inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 1);
+
+ for(y=0; y<height; y++){
+ horizontal_composeX(buffer + y*stride, width);
+ }
+
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ buffer[y*stride + x] /= SCALEX;
+ }
+ }
+}
+
+static void horizontal_decompose53i(int *b, int width){
+ int temp[width];
+ const int width2= width>>1;
+ int A1,A2,A3,A4, x;
+ const int w2= (width+1)>>1;
+
+ for(x=0; x<width2; x++){
+ temp[x ]= b[2*x ];
+ temp[x+w2]= b[2*x + 1];
+ }
+ if(width&1)
+ temp[x ]= b[2*x ];
+#if 0
+ A2= temp[1 ];
+ A4= temp[0 ];
+ A1= temp[0+width2];
+ A1 -= (A2 + A4)>>1;
+ A4 += (A1 + 1)>>1;
+ b[0+width2] = A1;
+ b[0 ] = A4;
+ for(x=1; x+1<width2; x+=2){
+ A3= temp[x+width2];
+ A4= temp[x+1 ];
+ A3 -= (A2 + A4)>>1;
+ A2 += (A1 + A3 + 2)>>2;
+ b[x+width2] = A3;
+ b[x ] = A2;
+
+ A1= temp[x+1+width2];
+ A2= temp[x+2 ];
+ A1 -= (A2 + A4)>>1;
+ A4 += (A1 + A3 + 2)>>2;
+ b[x+1+width2] = A1;
+ b[x+1 ] = A4;
+ }
+ A3= temp[width-1];
+ A3 -= A2;
+ A2 += (A1 + A3 + 2)>>2;
+ b[width -1] = A3;
+ b[width2-1] = A2;
+#else
+ lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0);
+ lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0);
+#endif
+}
+
+static void vertical_decompose53iH0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] -= (b0[i] + b2[i])>>1;
+ }
+}
+
+static void vertical_decompose53iL0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] += (b0[i] + b2[i] + 2)>>2;
+ }
+}
+
+static void spatial_decompose53i(int *buffer, int width, int height, int stride){
+ int x, y;
+ DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride;
+ DWTELEM *b1= buffer + mirror(-2 , height-1)*stride;
+
+ for(y=-2; y<height; y+=2){
+ DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
+ DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
+
+{START_TIMER
+ if(b1 <= b3) horizontal_decompose53i(b2, width);
+ if(y+2 < height) horizontal_decompose53i(b3, width);
+STOP_TIMER("horizontal_decompose53i")}
+
+{START_TIMER
+ if(b1 <= b3) vertical_decompose53iH0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_decompose53iL0(b0, b1, b2, width);
+STOP_TIMER("vertical_decompose53i*")}
+
+ b0=b2;
+ b1=b3;
+ }
+}
+
+#define lift5 lift
+#if 1
+#define W_AM 3
+#define W_AO 0
+#define W_AS 1
+
+#define W_BM 1
+#define W_BO 8
+#define W_BS 4
+
+#undef lift5
+#define W_CM 9999
+#define W_CO 2
+#define W_CS 2
+
+#define W_DM 15
+#define W_DO 16
+#define W_DS 5
+#elif 0
+#define W_AM 55
+#define W_AO 16
+#define W_AS 5
+
+#define W_BM 3
+#define W_BO 32
+#define W_BS 6
+
+#define W_CM 127
+#define W_CO 64
+#define W_CS 7
+
+#define W_DM 7
+#define W_DO 8
+#define W_DS 4
+#elif 0
+#define W_AM 97
+#define W_AO 32
+#define W_AS 6
+
+#define W_BM 63
+#define W_BO 512
+#define W_BS 10
+
+#define W_CM 13
+#define W_CO 8
+#define W_CS 4
+
+#define W_DM 15
+#define W_DO 16
+#define W_DS 5
+
+#else
+
+#define W_AM 203
+#define W_AO 64
+#define W_AS 7
+
+#define W_BM 217
+#define W_BO 2048
+#define W_BS 12
+
+#define W_CM 113
+#define W_CO 64
+#define W_CS 7
+
+#define W_DM 227
+#define W_DO 128
+#define W_DS 9
+#endif
+static void horizontal_decompose97i(int *b, int width){
+ int temp[width];
+ const int w2= (width+1)>>1;
+
+ lift (temp+w2, b +1, b , 1, 2, 2, width, -W_AM, W_AO, W_AS, 1, 0);
+ lift (temp , b , temp+w2, 1, 2, 1, width, -W_BM, W_BO, W_BS, 0, 0);
+ lift5(b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
+ lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
+}
+
+
+static void vertical_decompose97iH0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
+ }
+}
+
+static void vertical_decompose97iH1(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+#ifdef lift5
+ b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
+#else
+ int r= 3*(b0[i] + b2[i]);
+ r+= r>>4;
+ r+= r>>8;
+ b1[i] += (r+W_CO)>>W_CS;
+#endif
+ }
+}
+
+static void vertical_decompose97iL0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
+ }
+}
+
+static void vertical_decompose97iL1(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
+ }
+}
+
+static void spatial_decompose97i(int *buffer, int width, int height, int stride){
+ int x, y;
+ DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride;
+ DWTELEM *b1= buffer + mirror(-4 , height-1)*stride;
+ DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride;
+ DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride;
+
+ for(y=-4; y<height; y+=2){
+ DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
+ DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
+
+{START_TIMER
+ if(b3 <= b5) horizontal_decompose97i(b4, width);
+ if(y+4 < height) horizontal_decompose97i(b5, width);
+if(width>400){
+STOP_TIMER("horizontal_decompose97i")
+}}
+
+{START_TIMER
+ if(b3 <= b5) vertical_decompose97iH0(b3, b4, b5, width);
+ if(b2 <= b4) vertical_decompose97iL0(b2, b3, b4, width);
+ if(b1 <= b3) vertical_decompose97iH1(b1, b2, b3, width);
+ if(b0 <= b2) vertical_decompose97iL1(b0, b1, b2, width);
+
+if(width>400){
+STOP_TIMER("vertical_decompose97i")
+}}
+
+ b0=b2;
+ b1=b3;
+ b2=b4;
+ b3=b5;
+ }
+}
+
+static void spatial_dwt(SnowContext *s, int *buffer, int width, int height, int stride){
+ int level;
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ switch(s->spatial_decomposition_type){
+ case 0: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break;
+ case 1: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break;
+ case 2: spatial_decomposeX (buffer, width>>level, height>>level, stride<<level); break;
+ }
+ }
+}
+
+static void horizontal_compose53i(int *b, int width){
+ int temp[width];
+ const int width2= width>>1;
+ const int w2= (width+1)>>1;
+ int A1,A2,A3,A4, x;
+
+#if 0
+ A2= temp[1 ];
+ A4= temp[0 ];
+ A1= temp[0+width2];
+ A1 -= (A2 + A4)>>1;
+ A4 += (A1 + 1)>>1;
+ b[0+width2] = A1;
+ b[0 ] = A4;
+ for(x=1; x+1<width2; x+=2){
+ A3= temp[x+width2];
+ A4= temp[x+1 ];
+ A3 -= (A2 + A4)>>1;
+ A2 += (A1 + A3 + 2)>>2;
+ b[x+width2] = A3;
+ b[x ] = A2;
+
+ A1= temp[x+1+width2];
+ A2= temp[x+2 ];
+ A1 -= (A2 + A4)>>1;
+ A4 += (A1 + A3 + 2)>>2;
+ b[x+1+width2] = A1;
+ b[x+1 ] = A4;
+ }
+ A3= temp[width-1];
+ A3 -= A2;
+ A2 += (A1 + A3 + 2)>>2;
+ b[width -1] = A3;
+ b[width2-1] = A2;
+#else
+ lift(temp , b , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 1);
+ lift(temp+w2, b+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 1);
+#endif
+ for(x=0; x<width2; x++){
+ b[2*x ]= temp[x ];
+ b[2*x + 1]= temp[x+w2];
+ }
+ if(width&1)
+ b[2*x ]= temp[x ];
+}
+
+static void vertical_compose53iH0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] += (b0[i] + b2[i])>>1;
+ }
+}
+
+static void vertical_compose53iL0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] -= (b0[i] + b2[i] + 2)>>2;
+ }
+}
+
+static void spatial_compose53i(int *buffer, int width, int height, int stride){
+ int x, y;
+ DWTELEM *b0= buffer + mirror(-1-1, height-1)*stride;
+ DWTELEM *b1= buffer + mirror(-1 , height-1)*stride;
+
+ for(y=-1; y<=height; y+=2){
+ DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
+ DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
+
+{START_TIMER
+ if(b1 <= b3) vertical_compose53iL0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_compose53iH0(b0, b1, b2, width);
+STOP_TIMER("vertical_compose53i*")}
+
+{START_TIMER
+ if(y-1 >= 0) horizontal_compose53i(b0, width);
+ if(b0 <= b2) horizontal_compose53i(b1, width);
+STOP_TIMER("horizontal_compose53i")}
+
+ b0=b2;
+ b1=b3;
+ }
+}
+
+
+static void horizontal_compose97i(int *b, int width){
+ int temp[width];
+ const int w2= (width+1)>>1;
+
+ lift (temp , b , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 1);
+ lift5(temp+w2, b +w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 1);
+ lift (b , temp , temp+w2, 2, 1, 1, width, -W_BM, W_BO, W_BS, 0, 1);
+ lift (b+1 , temp+w2, b , 2, 1, 2, width, -W_AM, W_AO, W_AS, 1, 1);
+}
+
+static void vertical_compose97iH0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
+ }
+}
+
+static void vertical_compose97iH1(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+#ifdef lift5
+ b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
+#else
+ int r= 3*(b0[i] + b2[i]);
+ r+= r>>4;
+ r+= r>>8;
+ b1[i] -= (r+W_CO)>>W_CS;
+#endif
+ }
+}
+
+static void vertical_compose97iL0(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
+ }
+}
+
+static void vertical_compose97iL1(int *b0, int *b1, int *b2, int width){
+ int i;
+
+ for(i=0; i<width; i++){
+ b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
+ }
+}
+
+static void spatial_compose97i(int *buffer, int width, int height, int stride){
+ int x, y;
+ DWTELEM *b0= buffer + mirror(-3-1, height-1)*stride;
+ DWTELEM *b1= buffer + mirror(-3 , height-1)*stride;
+ DWTELEM *b2= buffer + mirror(-3+1, height-1)*stride;
+ DWTELEM *b3= buffer + mirror(-3+2, height-1)*stride;
+
+ for(y=-3; y<=height; y+=2){
+ DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
+ DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
+
+ if(stride == width && y+4 < height && 0){
+ int x;
+ for(x=0; x<width/2; x++)
+ b5[x] += 64*2;
+ for(; x<width; x++)
+ b5[x] += 169*2;
+ }
+
+{START_TIMER
+ if(b3 <= b5) vertical_compose97iL1(b3, b4, b5, width);
+ if(b2 <= b4) vertical_compose97iH1(b2, b3, b4, width);
+ if(b1 <= b3) vertical_compose97iL0(b1, b2, b3, width);
+ if(b0 <= b2) vertical_compose97iH0(b0, b1, b2, width);
+if(width>400){
+STOP_TIMER("vertical_compose97i")}}
+
+{START_TIMER
+ if(y-1>= 0) horizontal_compose97i(b0, width);
+ if(b0 <= b2) horizontal_compose97i(b1, width);
+if(width>400 && b0 <= b2){
+STOP_TIMER("horizontal_compose97i")}}
+
+ b0=b2;
+ b1=b3;
+ b2=b4;
+ b3=b5;
+ }
+}
+
+static void spatial_idwt(SnowContext *s, int *buffer, int width, int height, int stride){
+ int level;
+
+ for(level=s->spatial_decomposition_count-1; level>=0; level--){
+ switch(s->spatial_decomposition_type){
+ case 0: spatial_compose97i(buffer, width>>level, height>>level, stride<<level); break;
+ case 1: spatial_compose53i(buffer, width>>level, height>>level, stride<<level); break;
+ case 2: spatial_composeX (buffer, width>>level, height>>level, stride<<level); break;
+ }
+ }
+}
+
+static const int hilbert[16][2]={
+ {0,0}, {1,0}, {1,1}, {0,1},
+ {0,2}, {0,3}, {1,3}, {1,2},
+ {2,2}, {2,3}, {3,3}, {3,2},
+ {3,1}, {2,1}, {2,0}, {3,0},
+};
+#if 0
+-o o-
+ | |
+ o-o
+
+-o-o o-o-
+ | |
+ o-o o-o
+ | |
+ o o-o o
+ | | | |
+ o-o o-o
+
+ 0112122312232334122323342334
+ 0123456789ABCDEF0123456789AB
+ RLLRMRRLLRRMRLLMLRRLMLLRRLLM
+
+ 4 B F 14 1B
+ 4 11 15 20 27
+
+-o o-o-o o-o-o o-
+ | | | | | |
+ o-o o-o o-o o-o
+ | |
+ o-o o-o o-o o-o
+ | | | | | |
+ o o-o-o o-o-o o
+ | |
+ o-o o-o-o-o o-o
+ | | | |
+ o-o o-o o-o o-o
+ | | | |
+ o o-o o o o-o o
+ | | | | | | | |
+ o-o o-o o-o o-o
+
+#endif
+
+#define SVI(a, i, x, y) \
+{\
+ a[i][0]= x;\
+ a[i][1]= y;\
+ i++;\
+}
+
+static int sig_cmp(const void *a, const void *b){
+ const int16_t* da = (const int16_t *) a;
+ const int16_t* db = (const int16_t *) b;
+
+ if(da[1] != db[1]) return da[1] - db[1];
+ else return da[0] - db[0];
+}
+
+
+static void encode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
+ const int level= b->level;
+ const int w= b->width;
+ const int h= b->height;
+ int x, y;
+
+#if 1
+ if(orientation==3 && parent && 0){
+ int16_t candidate[w*h][2];
+ uint8_t state[w*h];
+ int16_t boarder[3][w*h*4][2];
+ int16_t significant[w*h][2];
+ int candidate_count=0;
+ int boarder_count[3]={0,0,0};
+ int significant_count=0;
+ int rle_pos=0;
+ int v, last_v;
+ int primary= orientation==1;
+
+ memset(candidate, 0, sizeof(candidate));
+ memset(state, 0, sizeof(state));
+ memset(boarder, 0, sizeof(boarder));
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ if(parent[(x>>1) + (y>>1)*2*stride])
+ SVI(candidate, candidate_count, x, y)
+ }
+ }
+
+ for(;;){
+ while(candidate_count && !boarder_count[0] && !boarder_count[1] && !boarder_count[2]){
+ candidate_count--;
+ x= candidate[ candidate_count][0];
+ y= candidate[ candidate_count][1];
+ if(state[x + y*w])
+ continue;
+ state[x + y*w]= 1;
+ v= !!src[x + y*stride];
+ put_cabac(&s->c, &b->state[0][0], v);
+ if(v){
+ SVI(significant, significant_count, x,y)
+ if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
+ if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
+ if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
+ if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
+ if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
+ if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
+ if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
+ if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
+ }
+ }
+ while(!boarder_count[0] && !boarder_count[1] && !boarder_count[2] && rle_pos < w*h){
+ int run=0;
+ for(; rle_pos < w*h;){
+ x= rle_pos % w; //FIXME speed
+ y= rle_pos / w;
+ rle_pos++;
+ if(state[x + y*w])
+ continue;
+ state[x + y*w]= 1;
+ v= !!src[x + y*stride];
+ if(v){
+ put_symbol(&s->c, b->state[1], run, 0);
+ SVI(significant, significant_count, x,y)
+ if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
+ if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
+ if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
+ if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
+ if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
+ if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
+ if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
+ if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
+ break;
+//FIXME note only right & down can be boarders
+ }
+ run++;
+ }
+ }
+ if(!boarder_count[0] && !boarder_count[1] && !boarder_count[2])
+ break;
+
+ while(boarder_count[0] || boarder_count[1] || boarder_count[2]){
+ int index;
+
+ if (boarder_count[ primary]) index= primary;
+ else if(boarder_count[1-primary]) index=1-primary;
+ else index=2;
+
+ boarder_count[index]--;
+ x= boarder[index][ boarder_count[index] ][0];
+ y= boarder[index][ boarder_count[index] ][1];
+ if(state[x + y*w]) //FIXME maybe check earlier
+ continue;
+ state[x + y*w]= 1;
+ v= !!src[x + y*stride];
+ put_cabac(&s->c, &b->state[0][index+1], v);
+ if(v){
+ SVI(significant, significant_count, x,y)
+ if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
+ if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
+ if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
+ if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
+ if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
+ if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
+ if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
+ if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
+ }
+ }
+ }
+ //FIXME sort significant coeffs maybe
+ if(1){
+ qsort(significant, significant_count, sizeof(int16_t[2]), sig_cmp);
+ }
+
+ last_v=1;
+ while(significant_count){
+ int context= 3 + quant7[last_v&0xFF]; //use significance of suroundings
+ significant_count--;
+ x= significant[significant_count][0];//FIXME try opposit direction
+ y= significant[significant_count][1];
+ v= src[x + y*stride];
+ put_symbol(&s->c, b->state[context + 2], v, 1); //FIXME try to avoid first bit, try this with the old code too!!
+ last_v= v;
+ }
+ }
+#endif
+ if(1){
+ int w, h;
+ int run=0;
+ int last_run=0;
+ int last_v=1;
+ int last_x=0;
+ int runs[b->width*b->height];
+ int run_index=0;
+
+ if(orientation==1){
+ w= b->height;
+ h= b->width;
+ }else{
+ w= b->width;
+ h= b->height;
+ }
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v, p;
+ int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
+ if(orientation==1) v= src[y + x*stride];
+ else v= src[x + y*stride];
+
+ if(y){
+ if(orientation==1) t= src[y - 1 + x*stride];
+ else t= src[x + (y-1)*stride];
+ if(x){
+ if(orientation==1) lt= src[y - 1 + (x-1)*stride];
+ else lt= src[x - 1 + (y-1)*stride];
+ }
+ if(x + 1 < w){
+ if(orientation==1) rt= src[y - 1 + (x+1)*stride];
+ else rt= src[x + 1 + (y-1)*stride];
+ }
+ }
+ if(x){
+ if(orientation==1) l= src[y + (x-1)*stride];
+ else l= src[x - 1 + y*stride];
+/* if(x > 1){
+ if(orientation==1) pri2= src[y + (x-2)*stride];
+ else pri2= src[x - 2 + y*stride];
+ }*/
+ }
+ if(!(lt|rt|t|l)){
+ if(v){
+ runs[run_index++]= run;
+ run=0;
+ }else{
+ run++;
+ }
+ }
+ }
+ }
+ runs[run_index++]= run;
+ run_index=0;
+ run= runs[run_index++];
+
+ put_symbol(&s->c, b->state[1+7], run, 0);
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v, p;
+ int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
+ if(orientation==1) v= src[y + x*stride];
+ else v= src[x + y*stride];
+
+ if(y){
+ if(orientation==1) t= src[y - 1 + x*stride];
+ else t= src[x + (y-1)*stride];
+ if(x){
+ if(orientation==1) lt= src[y - 1 + (x-1)*stride];
+ else lt= src[x - 1 + (y-1)*stride];
+ }
+ if(x + 1 < w){
+ if(orientation==1) rt= src[y - 1 + (x+1)*stride];
+ else rt= src[x + 1 + (y-1)*stride];
+ }
+ }
+ if(x){
+ if(orientation==1) l= src[y + (x-1)*stride];
+ else l= src[x - 1 + y*stride];
+/* if(x > 1){
+ if(orientation==1) pri2= src[y + (x-2)*stride];
+ else pri2= src[x - 2 + y*stride];
+ }*/
+ }
+ if(lt|rt|t|l){
+ put_cabac(&s->c, &b->state[0][(!l) + 2*(!t) + 4*(!lt) + 8*(!rt)], !v);
+ }else{
+ if(!run){
+ run= runs[run_index++];
+ put_symbol(&s->c, b->state[1+7], run, 0);
+ assert(v);
+ }else{
+ run--;
+ assert(!v);
+ }
+ }
+ if(v){
+ put_symbol(&s->c, b->state[quant13[(ABS(l) + ABS(t))&0x7F] + 1], ABS(v)-1, 0);
+ put_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]], v<0);
+ }
+ }
+ }
+ return;
+ }
+ if(1){
+ int w, h;
+ int run=0;
+ int last_run=0;
+ int last_v=1;
+ int last_x=0;
+
+ if(orientation==1){
+ w= b->height;
+ h= b->width;
+ }else{
+ w= b->width;
+ h= b->height;
+ }
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v, p;
+ if(orientation==1) v= src[y + x*stride];
+ else v= src[x + y*stride];
+
+ if(v){
+ int sec=0, pri=0/*, lt=0, rt=0, pri2=0*/;
+
+ if(y){
+ if(orientation==1) sec= src[y - 1 + x*stride];
+ else sec= src[x + (y-1)*stride];
+/* if(x){
+ if(orientation==1) lt= src[y - 1 + (x-1)*stride];
+ else lt= src[x - 1 + (y-1)*stride];
+ }*/
+ }
+/* if (orientation==1 && y + 1 < h && x) rt= src[y + 1 + (x-1)*stride];
+ else if (orientation!=1 && x + 1 < w && y) rt= src[x + 1 + (y-1)*stride];*/
+ if(x){
+ if(orientation==1) pri= src[y + (x-1)*stride];
+ else pri= src[x - 1 + y*stride];
+/* if(x > 1){
+ if(orientation==1) pri2= src[y + (x-2)*stride];
+ else pri2= src[x - 2 + y*stride];
+ }*/
+ }
+
+ put_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], run, 0);
+// context= 3*7 + 3 + quant11[last_v&0xFF] /*+ 7*quant3[(run-1)&0xFF]*/;
+// if(parent && orientation!=1) context += 3*7+7*quant3[parent[(x>>1) + (y>>1)*2*stride]&0xFF];
+
+// put_symbol(&s->c, b->state[ABS(quant7[pri&0xFF]) + 4*ABS(quant7[sec&0xFF]) + 8], ABS(v)-1, 0);
+ put_symbol(&s->c, b->state[quant13[(ABS(pri) + ABS(sec))&0x7F] + 8], ABS(v)-1, 0);
+
+// context= quant3b[sec&0xFF] + 3*quant3b[pri&0xFF];
+// put_cabac(&s->c, &b->state[7][ABS(context)], (v^context)<0);
+ put_cabac(&s->c, &b->state[7][1 + 3 + quant3b[sec&0xFF] + 3*quant3b[pri&0xFF]], v<0);
+ last_run=run;
+ last_v=v;
+
+ run=0;
+ }else{
+ run++;
+ }
+ }
+ }
+ if(run){
+ put_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], run, 0);
+ }
+ return;
+ }
+
+ {
+ int run=0;
+ int mode=1;
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ // int context=5*11*11 + 5*11+5;
+ int context=3*7 + 3 + 1;
+ int v= src[x + y*stride];
+
+ if(mode){
+ if(v){
+ put_symbol(&s->c, b->state[0], run, 0);
+ mode=0;
+ run=0;
+ }else{
+ run++;
+ continue;
+ }
+ }
+ if(x /*&& orientation!=1*/) context += quant7[src[x-1 + y*stride ]&0xFF];
+ if(y /*&& orientation!=2*/) context += 7*quant7[src[x + y*stride-stride]&0xFF];
+
+ // if(x>1) context += 11*11*quant3 [src[x-2 + y*stride ]&0xFF];
+ // if(parent) context += 11*11*quant3[parent[(x>>1) + (y>>1)*2*stride]&0xFF];
+
+ put_symbol(&s->c, b->state[context], v, 1);
+ if(v==0){
+ mode=1;
+ }
+ }
+ }
+ if(mode && run)
+ put_symbol(&s->c, b->state[0], run, 0);
+ }
+}
+
+static inline void decode_subbandX(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
+ const int level= b->level;
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+ START_TIMER
+
+ if(1){
+ int w,h;
+ int run;
+ int last_run;
+
+ for(y=0; y<b->height; y++)
+ memset(&src[y*stride], 0, b->width*sizeof(DWTELEM));
+
+ if(orientation==1){
+ w= b->height;
+ h= b->width;
+ }else{
+ w= b->width;
+ h= b->height;
+ }
+ x=y=0;
+ run= get_symbol(&s->c, b->state[1+7], 0);
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v, p;
+ int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
+
+ if(y){
+ if(orientation==1) t= src[y - 1 + x*stride];
+ else t= src[x + (y-1)*stride];
+ if(x){
+ if(orientation==1) lt= src[y - 1 + (x-1)*stride];
+ else lt= src[x - 1 + (y-1)*stride];
+ }
+ if(x + 1 < w){
+ if(orientation==1) rt= src[y - 1 + (x+1)*stride];
+ else rt= src[x + 1 + (y-1)*stride];
+ }
+ }
+ if(x){
+ if(orientation==1) l= src[y + (x-1)*stride];
+ else l= src[x - 1 + y*stride];
+/* if(x > 1){
+ if(orientation==1) pri2= src[y + (x-2)*stride];
+ else pri2= src[x - 2 + y*stride];
+ }*/
+ }
+ if(lt|rt|t|l){
+ v=!get_cabac(&s->c, &b->state[0][(!l) + 2*(!t) + 4*(!lt) + 8*(!rt)]);
+ }else{
+ if(!run){
+ run= get_symbol(&s->c, b->state[1+7], 0);
+ //FIXME optimize this here
+ //FIXME try to store a more naive run
+ v=1;
+ }else{
+ run--;
+ v=0;
+ }
+ }
+ if(v){
+ v= get_symbol(&s->c, b->state[quant13[(ABS(l) + ABS(t))&0x7F] + 1], 0) + 1;
+ if(get_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]]))
+ v= -v;
+ if(orientation==1) src[y + x*stride]= v;
+ else src[x + y*stride]= v;
+ }
+ }
+ }
+ if(level+1 == s->spatial_decomposition_count){
+ STOP_TIMER("decode_subband")
+ }
+
+ return;
+ }
+ if(1){
+ int w,h;
+ int last_run=0;
+ int last_v=1;
+
+ for(y=0; y<b->height; y++)
+ memset(&src[y*stride], 0, b->width*sizeof(DWTELEM));
+
+ if(orientation==1){
+ w= b->height;
+ h= b->width;
+ }else{
+ w= b->width;
+ h= b->height;
+ }
+ x=y=0;
+ for(;;){
+ int sec=0, pri=0/*, lt=0, rt=0, pri2=0*/;
+
+ last_run= get_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], 0);
+
+// context= 3*7 + 3 + quant7[last_v&0xFF]/* + 7*quant7[(last_run-1)&0xFF]*/;
+ x += last_run;
+ while(x>=w){
+ x-= w;
+ if(++y>=h) break;
+/* if(orientation!=1)
+ memset(&src[y*stride], 0, w*sizeof(DWTELEM));*/
+ }
+ if(y>=h) break;
+ if(y){
+ if(orientation==1) sec= src[y - 1 + x*stride];
+ else sec= src[x + (y-1)*stride];
+/* if(x){
+ if(orientation==1) lt= src[y - 1 + (x-1)*stride];
+ else lt= src[x - 1 + (y-1)*stride];
+ }*/
+ }
+/* if (orientation==1 && y + 1 < h && x) rt= src[y + 1 + (x-1)*stride];
+ else if (orientation!=1 && x + 1 < w && y) rt= src[x + 1 + (y-1)*stride];*/
+ if(x){
+ if(orientation==1) pri= src[y + (x-1)*stride];
+ else pri= src[x - 1 + y*stride];
+/* if(x > 1){
+ if(orientation==1) pri2= src[y + (x-2)*stride];
+ else pri2= src[x - 2 + y*stride];
+ }*/
+ }
+
+ last_v= get_symbol(&s->c, b->state[quant13[(ABS(pri) + ABS(sec))&0x7F] + 8], 0) + 1;
+ if(get_cabac(&s->c, &b->state[7][1 + 3 + quant3b[sec&0xFF] + 3*quant3b[pri&0xFF]]))
+ last_v= -last_v;
+
+ if(orientation==1) src[y + x*stride]= last_v;
+ else src[x + y*stride]= last_v;
+
+ if(++x==w){
+ x=0;
+ if(++y>=h) break;
+/* if(orientation!=1)
+ memset(&src[y*stride], 0, w*sizeof(DWTELEM));*/
+ }
+ }
+
+ if(level+1 == s->spatial_decomposition_count){
+ STOP_TIMER("decode_subband")
+ }
+
+ return;
+ }
+}
+
+static void decode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
+ if(orientation==1) decode_subbandX(s, b, src, parent, stride, 1);
+ else decode_subbandX(s, b, src, parent, stride, 0);
+}
+
+static void reset_contexts(SnowContext *s){
+ int plane_index, level, orientation;
+
+ for(plane_index=0; plane_index<2; plane_index++){
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1:0; orientation<4; orientation++){
+ memset(s->plane[plane_index].band[level][orientation].state, 0, sizeof(s->plane[plane_index].band[level][orientation].state));
+ }
+ }
+ }
+ memset(s->mb_band.state, 0, sizeof(s->mb_band.state));
+ memset(s->mv_band[0].state, 0, sizeof(s->mv_band[0].state));
+ memset(s->mv_band[1].state, 0, sizeof(s->mv_band[1].state));
+ memset(s->header_state, 0, sizeof(s->header_state));
+}
+
+static void mc_block(uint8_t *dst, uint8_t *src, uint8_t *tmp, int stride, int b_w, int b_h, int dx, int dy){
+ int x, y;
+
+ for(y=0; y < b_h+5; y++){
+ for(x=0; x < b_w; x++){
+ int a0= src[x + y*stride];
+ int a1= src[x + 1 + y*stride];
+ int a2= src[x + 2 + y*stride];
+ int a3= src[x + 3 + y*stride];
+ int a4= src[x + 4 + y*stride];
+ int a5= src[x + 5 + y*stride];
+// int am= 9*(a1+a2) - (a0+a3);
+ int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
+// int am= 18*(a2+a3) - 2*(a1+a4);
+// int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3;
+// int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3;
+
+// if(b_w==16) am= 8*(a1+a2);
+
+ if(dx<8) tmp[x + y*stride]= (32*a2*( 8-dx) + am* dx + 128)>>8;
+ else tmp[x + y*stride]= ( am*(16-dx) + 32*a3*(dx-8) + 128)>>8;
+
+/* if (dx< 4) tmp[x + y*stride]= (16*a1*( 4-dx) + aL* dx + 32)>>6;
+ else if(dx< 8) tmp[x + y*stride]= ( aL*( 8-dx) + am*(dx- 4) + 32)>>6;
+ else if(dx<12) tmp[x + y*stride]= ( am*(12-dx) + aR*(dx- 8) + 32)>>6;
+ else tmp[x + y*stride]= ( aR*(16-dx) + 16*a2*(dx-12) + 32)>>6;*/
+ }
+ }
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ int a0= tmp[x + y *stride];
+ int a1= tmp[x + (y + 1)*stride];
+ int a2= tmp[x + (y + 2)*stride];
+ int a3= tmp[x + (y + 3)*stride];
+ int a4= tmp[x + (y + 4)*stride];
+ int a5= tmp[x + (y + 5)*stride];
+ int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
+// int am= 18*(a2+a3) - 2*(a1+a4);
+/* int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3;
+ int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3;*/
+
+// if(b_w==16) am= 8*(a1+a2);
+
+ if(dy<8) dst[x + y*stride]= (32*a2*( 8-dy) + am* dy + 128)>>8;
+ else dst[x + y*stride]= ( am*(16-dy) + 32*a3*(dy-8) + 128)>>8;
+
+/* if (dy< 4) tmp[x + y*stride]= (16*a1*( 4-dy) + aL* dy + 32)>>6;
+ else if(dy< 8) tmp[x + y*stride]= ( aL*( 8-dy) + am*(dy- 4) + 32)>>6;
+ else if(dy<12) tmp[x + y*stride]= ( am*(12-dy) + aR*(dy- 8) + 32)>>6;
+ else tmp[x + y*stride]= ( aR*(16-dy) + 16*a2*(dy-12) + 32)>>6;*/
+ }
+ }
+}
+
+#define mcb(dx,dy,b_w)\
+static void mc_block ## dx ## dy(uint8_t *dst, uint8_t *src, int stride){\
+ uint8_t tmp[stride*(b_w+5)];\
+ mc_block(dst, src-2-2*stride, tmp, stride, b_w, b_w, dx, dy);\
+}
+
+mcb( 0, 0,16)
+mcb( 4, 0,16)
+mcb( 8, 0,16)
+mcb(12, 0,16)
+mcb( 0, 4,16)
+mcb( 4, 4,16)
+mcb( 8, 4,16)
+mcb(12, 4,16)
+mcb( 0, 8,16)
+mcb( 4, 8,16)
+mcb( 8, 8,16)
+mcb(12, 8,16)
+mcb( 0,12,16)
+mcb( 4,12,16)
+mcb( 8,12,16)
+mcb(12,12,16)
+
+#define mca(dx,dy,b_w)\
+static void mc_block_hpel ## dx ## dy(uint8_t *dst, uint8_t *src, int stride, int h){\
+ uint8_t tmp[stride*(b_w+5)];\
+ assert(h==b_w);\
+ mc_block(dst, src-2-2*stride, tmp, stride, b_w, b_w, dx, dy);\
+}
+
+mca( 0, 0,16)
+mca( 8, 0,16)
+mca( 0, 8,16)
+mca( 8, 8,16)
+
+static void add_xblock(DWTELEM *dst, uint8_t *src, uint8_t *obmc, int s_x, int s_y, int b_w, int b_h, int mv_x, int mv_y, int w, int h, int dst_stride, int src_stride, int obmc_stride, int mb_type, int add){
+ uint8_t tmp[src_stride*(b_h+5)]; //FIXME move to context to gurantee alignment
+ int x,y;
+
+ if(s_x<0){
+ obmc -= s_x;
+ b_w += s_x;
+ s_x=0;
+ }else if(s_x + b_w > w){
+ b_w = w - s_x;
+ }
+ if(s_y<0){
+ obmc -= s_y*obmc_stride;
+ b_h += s_y;
+ s_y=0;
+ }else if(s_y + b_h> h){
+ b_h = h - s_y;
+ }
+
+ dst += s_x + s_y*dst_stride;
+
+ if(mb_type==1){
+ src += s_x + s_y*src_stride;
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ if(add) dst[x + y*dst_stride] += obmc[x + y*obmc_stride] * 128 * (256/OBMC_MAX);
+ else dst[x + y*dst_stride] -= obmc[x + y*obmc_stride] * 128 * (256/OBMC_MAX);
+ }
+ }
+ }else{
+ int dx= mv_x&15;
+ int dy= mv_y&15;
+// int dxy= (mv_x&1) + 2*(mv_y&1);
+
+ s_x += (mv_x>>4) - 2;
+ s_y += (mv_y>>4) - 2;
+ src += s_x + s_y*src_stride;
+ //use dsputil
+
+ if( (unsigned)s_x >= w - b_w - 4
+ || (unsigned)s_y >= h - b_h - 4){
+ ff_emulated_edge_mc(tmp + 32, src, src_stride, b_w+5, b_h+5, s_x, s_y, w, h);
+ src= tmp + 32;
+ }
+
+ if(mb_type==0){
+ mc_block(tmp, src, tmp + 64+8, src_stride, b_w, b_h, dx, dy);
+ }else{
+ int sum=0;
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ sum += src[x+ y*src_stride];
+ }
+ }
+ sum= (sum + b_h*b_w/2) / (b_h*b_w);
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ tmp[x + y*src_stride]= sum;
+ }
+ }
+ }
+
+ for(y=0; y < b_h; y++){
+ for(x=0; x < b_w; x++){
+ if(add) dst[x + y*dst_stride] += obmc[x + y*obmc_stride] * tmp[x + y*src_stride] * (256/OBMC_MAX);
+ else dst[x + y*dst_stride] -= obmc[x + y*obmc_stride] * tmp[x + y*src_stride] * (256/OBMC_MAX);
+ }
+ }
+ }
+}
+
+static void predict_plane(SnowContext *s, DWTELEM *buf, int plane_index, int add){
+ Plane *p= &s->plane[plane_index];
+ const int mb_w= s->mb_band.width;
+ const int mb_h= s->mb_band.height;
+ const int mb_stride= s->mb_band.stride;
+ int x, y, mb_x, mb_y;
+ int scale = plane_index ? s->mv_scale : 2*s->mv_scale;
+ int block_w = plane_index ? 8 : 16;
+ uint8_t *obmc = plane_index ? obmc16 : obmc32;
+ int obmc_stride= plane_index ? 16 : 32;
+ int ref_stride= s->last_picture.linesize[plane_index];
+ uint8_t *ref = s->last_picture.data[plane_index];
+ int w= p->width;
+ int h= p->height;
+
+if(s->avctx->debug&512){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ if(add) buf[x + y*w]+= 128*256;
+ else buf[x + y*w]-= 128*256;
+ }
+ }
+
+ return;
+}
+ for(mb_y=-1; mb_y<=mb_h; mb_y++){
+ for(mb_x=-1; mb_x<=mb_w; mb_x++){
+ int index= clip(mb_x, 0, mb_w-1) + clip(mb_y, 0, mb_h-1)*mb_stride;
+
+ add_xblock(buf, ref, obmc,
+ block_w*mb_x - block_w/2,
+ block_w*mb_y - block_w/2,
+ 2*block_w, 2*block_w,
+ s->mv_band[0].buf[index]*scale, s->mv_band[1].buf[index]*scale,
+ w, h,
+ w, ref_stride, obmc_stride,
+ s->mb_band.buf[index], add);
+
+ }
+ }
+}
+
+static void quantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int bias){
+ const int level= b->level;
+ const int w= b->width;
+ const int h= b->height;
+ const int qlog= clip(s->qlog + b->qlog, 0, 128);
+ const int qmul= qexp[qlog&7]<<(qlog>>3);
+ int x,y;
+
+ assert(QROOT==8);
+
+ bias= bias ? 0 : (3*qmul)>>3;
+
+ if(!bias){
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+ //FIXME use threshold
+ //FIXME optimize
+ //FIXME bias
+ if(i>=0){
+ i<<= QEXPSHIFT;
+ i/= qmul;
+ src[x + y*stride]= i;
+ }else{
+ i= -i;
+ i<<= QEXPSHIFT;
+ i/= qmul;
+ src[x + y*stride]= -i;
+ }
+ }
+ }
+ }else{
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+
+ //FIXME use threshold
+ //FIXME optimize
+ //FIXME bias
+ if(i>=0){
+ i<<= QEXPSHIFT;
+ i= (i + bias) / qmul;
+ src[x + y*stride]= i;
+ }else{
+ i= -i;
+ i<<= QEXPSHIFT;
+ i= (i + bias) / qmul;
+ src[x + y*stride]= -i;
+ }
+ }
+ }
+ }
+}
+
+static void dequantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride){
+ const int level= b->level;
+ const int w= b->width;
+ const int h= b->height;
+ const int qlog= clip(s->qlog + b->qlog, 0, 128);
+ const int qmul= qexp[qlog&7]<<(qlog>>3);
+ const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
+ int x,y;
+
+ assert(QROOT==8);
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= src[x + y*stride];
+ if(i<0){
+ src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
+ }else if(i>0){
+ src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
+ }
+ }
+ }
+}
+
+static void decorrelate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+ for(y=h-1; y>=0; y--){
+ for(x=w-1; x>=0; x--){
+ int i= x + y*stride;
+
+ if(x){
+ if(use_median){
+ if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
+ else src[i] -= src[i - 1];
+ }else{
+ if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
+ else src[i] -= src[i - 1];
+ }
+ }else{
+ if(y) src[i] -= src[i - stride];
+ }
+ }
+ }
+}
+
+static void correlate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){
+ const int w= b->width;
+ const int h= b->height;
+ int x,y;
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int i= x + y*stride;
+
+ if(x){
+ if(use_median){
+ if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
+ else src[i] += src[i - 1];
+ }else{
+ if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
+ else src[i] += src[i - 1];
+ }
+ }else{
+ if(y) src[i] += src[i - stride];
+ }
+ }
+ }
+}
+
+static void encode_header(SnowContext *s){
+ int plane_index, level, orientation;
+
+ put_cabac(&s->c, s->header_state, s->keyframe); // state clearing stuff?
+ if(s->keyframe){
+ put_symbol(&s->c, s->header_state, s->version, 0);
+ put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
+ put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
+ put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
+ put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
+ put_symbol(&s->c, s->header_state, s->b_width, 0);
+ put_symbol(&s->c, s->header_state, s->b_height, 0);
+ put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
+ put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
+ put_cabac(&s->c, s->header_state, s->spatial_scalability);
+// put_cabac(&s->c, s->header_state, s->rate_scalability);
+
+ for(plane_index=0; plane_index<2; plane_index++){
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1:0; orientation<4; orientation++){
+ if(orientation==2) continue;
+ put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
+ }
+ }
+ }
+ }
+ put_symbol(&s->c, s->header_state, s->spatial_decomposition_type, 0);
+ put_symbol(&s->c, s->header_state, s->qlog, 1);
+ put_symbol(&s->c, s->header_state, s->mv_scale, 0);
+ put_symbol(&s->c, s->header_state, s->qbias, 1);
+}
+
+static int decode_header(SnowContext *s){
+ int plane_index, level, orientation;
+
+ s->keyframe= get_cabac(&s->c, s->header_state);
+ if(s->keyframe){
+ s->version= get_symbol(&s->c, s->header_state, 0);
+ if(s->version>0){
+ av_log(s->avctx, AV_LOG_ERROR, "version %d not supported", s->version);
+ return -1;
+ }
+ s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0);
+ s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0);
+ s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
+ s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
+ s->b_width= get_symbol(&s->c, s->header_state, 0);
+ s->b_height= get_symbol(&s->c, s->header_state, 0);
+ s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
+ s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);
+ s->spatial_scalability= get_cabac(&s->c, s->header_state);
+// s->rate_scalability= get_cabac(&s->c, s->header_state);
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1:0; orientation<4; orientation++){
+ int q;
+ if (plane_index==2) q= s->plane[1].band[level][orientation].qlog;
+ else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog;
+ else q= get_symbol(&s->c, s->header_state, 1);
+ s->plane[plane_index].band[level][orientation].qlog= q;
+ }
+ }
+ }
+ }
+
+ s->spatial_decomposition_type= get_symbol(&s->c, s->header_state, 0);
+ if(s->spatial_decomposition_type > 2){
+ av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type);
+ return -1;
+ }
+
+ s->qlog= get_symbol(&s->c, s->header_state, 1);
+ s->mv_scale= get_symbol(&s->c, s->header_state, 0);
+ s->qbias= get_symbol(&s->c, s->header_state, 1);
+
+ return 0;
+}
+
+static int common_init(AVCodecContext *avctx){
+ SnowContext *s = avctx->priv_data;
+ int width, height;
+ int level, orientation, plane_index, dec;
+
+ s->avctx= avctx;
+
+ dsputil_init(&s->dsp, avctx);
+
+#define mcf(dx,dy)\
+ s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
+ s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
+ mc_block ## dx ## dy;
+
+ mcf( 0, 0)
+ mcf( 4, 0)
+ mcf( 8, 0)
+ mcf(12, 0)
+ mcf( 0, 4)
+ mcf( 4, 4)
+ mcf( 8, 4)
+ mcf(12, 4)
+ mcf( 0, 8)
+ mcf( 4, 8)
+ mcf( 8, 8)
+ mcf(12, 8)
+ mcf( 0,12)
+ mcf( 4,12)
+ mcf( 8,12)
+ mcf(12,12)
+
+#define mcfh(dx,dy)\
+ s->dsp.put_pixels_tab [0][dy/4+dx/8]=\
+ s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
+ mc_block_hpel ## dx ## dy;
+
+ mcfh(0, 0)
+ mcfh(8, 0)
+ mcfh(0, 8)
+ mcfh(8, 8)
+
+ dec= s->spatial_decomposition_count= 5;
+ s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
+
+ s->chroma_h_shift= 1; //FIXME XXX
+ s->chroma_v_shift= 1;
+
+// dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
+
+ s->b_width = (s->avctx->width +(1<<dec)-1)>>dec;
+ s->b_height= (s->avctx->height+(1<<dec)-1)>>dec;
+
+ s->spatial_dwt_buffer= av_mallocz(s->b_width*s->b_height*sizeof(DWTELEM)<<(2*dec));
+ s->pred_buffer= av_mallocz(s->b_width*s->b_height*sizeof(DWTELEM)<<(2*dec));
+
+ s->mv_scale= (s->avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ int w= s->avctx->width;
+ int h= s->avctx->height;
+
+ if(plane_index){
+ w>>= s->chroma_h_shift;
+ h>>= s->chroma_v_shift;
+ }
+ s->plane[plane_index].width = w;
+ s->plane[plane_index].height= h;
+av_log(NULL, AV_LOG_DEBUG, "%d %d\n", w, h);
+ for(level=s->spatial_decomposition_count-1; level>=0; level--){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &s->plane[plane_index].band[level][orientation];
+
+ b->buf= s->spatial_dwt_buffer;
+ b->level= level;
+ b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
+ b->width = (w + !(orientation&1))>>1;
+ b->height= (h + !(orientation>1))>>1;
+
+ if(orientation&1) b->buf += (w+1)>>1;
+ if(orientation>1) b->buf += b->stride>>1;
+
+ if(level)
+ b->parent= &s->plane[plane_index].band[level-1][orientation];
+ }
+ w= (w+1)>>1;
+ h= (h+1)>>1;
+ }
+ }
+
+ //FIXME init_subband() ?
+ s->mb_band.stride= s->mv_band[0].stride= s->mv_band[1].stride=
+ s->mb_band.width = s->mv_band[0].width = s->mv_band[1].width = (s->avctx->width + 15)>>4;
+ s->mb_band.height= s->mv_band[0].height= s->mv_band[1].height= (s->avctx->height+ 15)>>4;
+ s->mb_band .buf= av_mallocz(s->mb_band .stride * s->mb_band .height*sizeof(DWTELEM));
+ s->mv_band[0].buf= av_mallocz(s->mv_band[0].stride * s->mv_band[0].height*sizeof(DWTELEM));
+ s->mv_band[1].buf= av_mallocz(s->mv_band[1].stride * s->mv_band[1].height*sizeof(DWTELEM));
+
+ reset_contexts(s);
+/*
+ width= s->width= avctx->width;
+ height= s->height= avctx->height;
+
+ assert(width && height);
+*/
+ s->avctx->get_buffer(s->avctx, &s->mconly_picture);
+
+ return 0;
+}
+
+
+static void calculate_vissual_weight(SnowContext *s, Plane *p){
+ int width = p->width;
+ int height= p->height;
+ int i, level, orientation, x, y;
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+ DWTELEM *buf= b->buf;
+ int64_t error=0;
+
+ memset(s->spatial_dwt_buffer, 0, sizeof(int)*width*height);
+ buf[b->width/2 + b->height/2*b->stride]= 256*256;
+ spatial_idwt(s, s->spatial_dwt_buffer, width, height, width);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= s->spatial_dwt_buffer[x + y*width];
+ error += d*d;
+ }
+ }
+
+ b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);
+ av_log(NULL, AV_LOG_DEBUG, "%d %d %d\n", level, orientation, b->qlog/*, sqrt(error)*/);
+ }
+ }
+}
+
+static int encode_init(AVCodecContext *avctx)
+{
+ SnowContext *s = avctx->priv_data;
+ int i;
+ int level, orientation, plane_index;
+
+ common_init(avctx);
+
+ s->version=0;
+
+ s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
+ s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
+ s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
+ s->mb_type = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int16_t));
+ s->mb_mean = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int8_t ));
+ s->dummy = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int32_t));
+ h263_encode_init(&s->m); //mv_penalty
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ calculate_vissual_weight(s, &s->plane[plane_index]);
+ }
+
+
+ avctx->coded_frame= &s->current_picture;
+ switch(avctx->pix_fmt){
+// case PIX_FMT_YUV444P:
+// case PIX_FMT_YUV422P:
+ case PIX_FMT_YUV420P:
+ case PIX_FMT_GRAY8:
+// case PIX_FMT_YUV411P:
+// case PIX_FMT_YUV410P:
+ s->colorspace_type= 0;
+ break;
+/* case PIX_FMT_RGBA32:
+ s->colorspace= 1;
+ break;*/
+ default:
+ av_log(avctx, AV_LOG_ERROR, "format not supported\n");
+ return -1;
+ }
+// avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
+ s->chroma_h_shift= 1;
+ s->chroma_v_shift= 1;
+ return 0;
+}
+
+static int frame_start(SnowContext *s){
+ AVFrame tmp;
+
+ if(s->keyframe)
+ reset_contexts(s);
+
+ tmp= s->last_picture;
+ s->last_picture= s->current_picture;
+ s->current_picture= tmp;
+
+ s->current_picture.reference= 1;
+ if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){
+ av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
+ SnowContext *s = avctx->priv_data;
+ CABACContext * const c= &s->c;
+ AVFrame *pict = data;
+ const int width= s->avctx->width;
+ const int height= s->avctx->height;
+ int used_count= 0;
+ int log2_threshold, level, orientation, plane_index, i;
+
+ if(avctx->strict_std_compliance >= 0){
+ av_log(avctx, AV_LOG_ERROR, "this codec is under development, files encoded with it wont be decodeable with future versions!!!\n"
+ "use vstrict=-1 to use it anyway\n");
+ return -1;
+ }
+
+ ff_init_cabac_encoder(c, buf, buf_size);
+ ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
+
+ s->input_picture = *pict;
+
+ memset(s->header_state, 0, sizeof(s->header_state));
+
+ s->keyframe=avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
+ pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
+
+ s->qlog= rint(QROOT*log2(pict->quality / (float)FF_QP2LAMBDA));
+ //<64 >60
+ s->qlog += 61;
+
+ for(i=0; i<s->mb_band.stride * s->mb_band.height; i++){
+ s->mb_band.buf[i]= s->keyframe;
+ }
+
+ frame_start(s);
+
+ if(pict->pict_type == P_TYPE){
+ int block_width = (width +15)>>4;
+ int block_height= (height+15)>>4;
+ int stride= s->current_picture.linesize[0];
+ uint8_t *src_plane= s->input_picture.data[0];
+ int src_stride= s->input_picture.linesize[0];
+ int x,y;
+
+ assert(s->current_picture.data[0]);
+ assert(s->last_picture.data[0]);
+
+ s->m.avctx= s->avctx;
+ s->m.current_picture.data[0]= s->current_picture.data[0];
+ s->m. last_picture.data[0]= s-> last_picture.data[0];
+ s->m. new_picture.data[0]= s-> input_picture.data[0];
+ s->m.current_picture_ptr= &s->m.current_picture;
+ s->m. last_picture_ptr= &s->m. last_picture;
+ s->m.linesize=
+ s->m. last_picture.linesize[0]=
+ s->m. new_picture.linesize[0]=
+ s->m.current_picture.linesize[0]= stride;
+ s->m.width = width;
+ s->m.height= height;
+ s->m.mb_width = block_width;
+ s->m.mb_height= block_height;
+ s->m.mb_stride= s->m.mb_width+1;
+ s->m.b8_stride= 2*s->m.mb_width+1;
+ s->m.f_code=1;
+ s->m.pict_type= pict->pict_type;
+ s->m.me_method= s->avctx->me_method;
+ s->m.me.scene_change_score=0;
+ s->m.flags= s->avctx->flags;
+ s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;
+ s->m.out_format= FMT_H263;
+ s->m.unrestricted_mv= 1;
+
+ s->m.lambda= pict->quality * 3/2; //FIXME bug somewhere else
+ s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
+ s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
+
+ if(!s->motion_val8){
+ s->motion_val8 = av_mallocz(s->m.b8_stride*block_height*2*2*sizeof(int16_t));
+ s->motion_val16= av_mallocz(s->m.mb_stride*block_height*2*sizeof(int16_t));
+ }
+
+ s->m.mb_type= s->mb_type;
+
+ //dummies, to avoid segfaults
+ s->m.current_picture.mb_mean = s->mb_mean;
+ s->m.current_picture.mb_var = (int16_t*)s->dummy;
+ s->m.current_picture.mc_mb_var= (int16_t*)s->dummy;
+ s->m.current_picture.mb_type = s->dummy;
+
+ s->m.current_picture.motion_val[0]= s->motion_val8;
+ s->m.p_mv_table= s->motion_val16;
+ s->m.dsp= s->dsp; //move
+ ff_init_me(&s->m);
+
+
+ s->m.me.pre_pass=1;
+ s->m.me.dia_size= s->avctx->pre_dia_size;
+ s->m.first_slice_line=1;
+ for(y= block_height-1; y >= 0; y--) {
+ uint8_t src[stride*16];
+
+ s->m.new_picture.data[0]= src - y*16*stride; //ugly
+ s->m.mb_y= y;
+ for(i=0; i<16 && i + 16*y<height; i++){
+ memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
+ for(x=width; x<16*block_width; x++)
+ src[i*stride+x]= src[i*stride+x-1];
+ }
+ for(; i<16 && i + 16*y<16*block_height; i++)
+ memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
+
+ for(x=block_width-1; x >=0 ;x--) {
+ s->m.mb_x= x;
+ ff_init_block_index(&s->m);
+ ff_update_block_index(&s->m);
+ ff_pre_estimate_p_frame_motion(&s->m, x, y);
+ }
+ s->m.first_slice_line=0;
+ }
+ s->m.me.pre_pass=0;
+
+
+ s->m.me.dia_size= s->avctx->dia_size;
+ s->m.first_slice_line=1;
+ for (y = 0; y < block_height; y++) {
+ uint8_t src[stride*16];
+
+ s->m.new_picture.data[0]= src - y*16*stride; //ugly
+ s->m.mb_y= y;
+
+ assert(width <= stride);
+ assert(width <= 16*block_width);
+
+ for(i=0; i<16 && i + 16*y<height; i++){
+ memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
+ for(x=width; x<16*block_width; x++)
+ src[i*stride+x]= src[i*stride+x-1];
+ }
+ for(; i<16 && i + 16*y<16*block_height; i++)
+ memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
+
+ for (x = 0; x < block_width; x++) {
+ int mb_xy= x + y*(s->mb_band.stride);
+ s->m.mb_x= x;
+ ff_init_block_index(&s->m);
+ ff_update_block_index(&s->m);
+
+ ff_estimate_p_frame_motion(&s->m, x, y);
+
+ s->mb_band .buf[mb_xy]= (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER)
+ ? 0 : 2;
+ s->mv_band[0].buf[mb_xy]= s->motion_val16[x + y*s->m.mb_stride][0];
+ s->mv_band[1].buf[mb_xy]= s->motion_val16[x + y*s->m.mb_stride][1];
+
+ if(s->mb_band .buf[x + y*(s->mb_band.stride)]==2 && 0){
+ int dc0=128, dc1=128, dc, dc2, dir;
+ int offset= (s->avctx->flags & CODEC_FLAG_QPEL) ? 64 : 32;
+
+ dc =s->mb_mean[x + y *s->m.mb_stride ];
+ if(x) dc0=s->mb_mean[x + y *s->m.mb_stride - 1];
+ if(y) dc1=s->mb_mean[x + (y-1)*s->m.mb_stride ];
+ dc2= (dc0+dc1)>>1;
+#if 0
+ if (ABS(dc0 - dc) < ABS(dc1 - dc) && ABS(dc0 - dc) < ABS(dc2 - dc))
+ dir= 1;
+ else if(ABS(dc0 - dc) >=ABS(dc1 - dc) && ABS(dc1 - dc) < ABS(dc2 - dc))
+ dir=-1;
+ else
+ dir=0;
+#endif
+ if(ABS(dc0 - dc) < ABS(dc1 - dc) && x){
+ s->mv_band[0].buf[mb_xy]= s->mv_band[0].buf[x + y*(s->mb_band.stride)-1] - offset;
+ s->mv_band[1].buf[mb_xy]= s->mv_band[1].buf[x + y*(s->mb_band.stride)-1];
+ s->mb_mean[x + y *s->m.mb_stride ]= dc0;
+ }else if(y){
+ s->mv_band[0].buf[mb_xy]= s->mv_band[0].buf[x + (y-1)*(s->mb_band.stride)];
+ s->mv_band[1].buf[mb_xy]= s->mv_band[1].buf[x + (y-1)*(s->mb_band.stride)] - offset;
+ s->mb_mean[x + y *s->m.mb_stride ]= dc1;
+ }
+ }
+// s->mb_band .buf[x + y*(s->mb_band.stride)]=1; //FIXME intra only test
+ }
+ s->m.first_slice_line=0;
+ }
+ assert(s->m.pict_type == P_TYPE);
+ if(s->m.me.scene_change_score > s->avctx->scenechange_threshold){
+ s->m.pict_type=
+ pict->pict_type =I_TYPE;
+ for(i=0; i<s->mb_band.stride * s->mb_band.height; i++){
+ s->mb_band.buf[i]= 1;
+ s->mv_band[0].buf[i]=
+ s->mv_band[1].buf[i]= 0;
+ }
+ //printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
+ }
+ }
+
+ s->m.first_slice_line=1;
+
+ s->qbias= pict->pict_type == P_TYPE ? 2 : 0;
+
+ encode_header(s);
+
+ decorrelate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 0, 1);
+ decorrelate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 0, 1);
+ decorrelate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 0 ,1);
+ encode_subband(s, &s->mb_band , s->mb_band .buf, NULL, s->mb_band .stride, 0);
+ encode_subband(s, &s->mv_band[0], s->mv_band[0].buf, NULL, s->mv_band[0].stride, 0);
+ encode_subband(s, &s->mv_band[1], s->mv_band[1].buf, NULL, s->mv_band[1].stride, 0);
+
+//FIXME avoid this
+ correlate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 1, 1);
+ correlate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 1, 1);
+ correlate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 1, 1);
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ Plane *p= &s->plane[plane_index];
+ int w= p->width;
+ int h= p->height;
+ int x, y;
+ int bits= put_bits_count(&s->c.pb);
+
+ //FIXME optimize
+#if QPRED
+ memset(s->pred_buffer, 0, sizeof(DWTELEM)*w*h);
+ predict_plane(s, s->pred_buffer, plane_index, 1);
+ spatial_dwt(s, s->pred_buffer, w, h, w);
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+ int delta= ((int)s->pred_buffer - (int)s->spatial_dwt_buffer)/sizeof(DWTELEM);
+
+ quantize (s, b, b->buf + delta, b->stride, s->qbias);
+ dequantize(s, b, b->buf + delta, b->stride);
+ }
+ }
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<8;
+ }
+ }
+ spatial_dwt(s, s->spatial_dwt_buffer, w, h, w);
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]-= s->pred_buffer[y*w + x];
+ }
+ }
+#else
+ if(pict->data[plane_index]) //FIXME gray hack
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<8;
+ }
+ }
+ predict_plane(s, s->spatial_dwt_buffer, plane_index, 0);
+ spatial_dwt(s, s->spatial_dwt_buffer, w, h, w);
+#endif
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ quantize(s, b, b->buf, b->stride, s->qbias);
+ if(orientation==0)
+ decorrelate(s, b, b->buf, b->stride, pict->pict_type == P_TYPE, 0);
+ encode_subband(s, b, b->buf, b->parent ? b->parent->buf : NULL, b->stride, orientation);
+ assert(b->parent==NULL || b->parent->stride == b->stride*2);
+ if(orientation==0)
+ correlate(s, b, b->buf, b->stride, 1, 0);
+ }
+ }
+// av_log(NULL, AV_LOG_DEBUG, "plane:%d bits:%d\n", plane_index, put_bits_count(&s->c.pb) - bits);
+
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ dequantize(s, b, b->buf, b->stride);
+ }
+ }
+
+#if QPRED
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]+= s->pred_buffer[y*w + x];
+ }
+ }
+ spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
+#else
+ spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
+ predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
+#endif
+ //FIXME optimize
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
+ if(v&(~255)) v= ~(v>>31);
+ s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]= v;
+ }
+ }
+ if(s->avctx->flags&CODEC_FLAG_PSNR){
+ int64_t error= 0;
+
+ if(pict->data[plane_index]) //FIXME gray hack
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int d= s->spatial_dwt_buffer[y*w + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x]*256;
+ error += d*d;
+ }
+ }
+ error= (error + 128*256)>>16;
+ s->avctx->error[plane_index] += error;
+ s->avctx->error[3] += error;
+ }
+ }
+
+ if(s->last_picture.data[0])
+ avctx->release_buffer(avctx, &s->last_picture);
+
+ emms_c();
+
+ return put_cabac_terminate(c, 1);
+}
+
+static void common_end(SnowContext *s){
+ av_freep(&s->spatial_dwt_buffer);
+ av_freep(&s->mb_band.buf);
+ av_freep(&s->mv_band[0].buf);
+ av_freep(&s->mv_band[1].buf);
+
+ av_freep(&s->m.me.scratchpad);
+ av_freep(&s->m.me.map);
+ av_freep(&s->m.me.score_map);
+ av_freep(&s->mb_type);
+ av_freep(&s->mb_mean);
+ av_freep(&s->dummy);
+ av_freep(&s->motion_val8);
+ av_freep(&s->motion_val16);
+}
+
+static int encode_end(AVCodecContext *avctx)
+{
+ SnowContext *s = avctx->priv_data;
+
+ common_end(s);
+
+ return 0;
+}
+
+static int decode_init(AVCodecContext *avctx)
+{
+// SnowContext *s = avctx->priv_data;
+
+ common_init(avctx);
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){
+ SnowContext *s = avctx->priv_data;
+ CABACContext * const c= &s->c;
+ const int width= s->avctx->width;
+ const int height= s->avctx->height;
+ int bytes_read;
+ AVFrame *picture = data;
+ int log2_threshold, level, orientation, plane_index;
+
+
+ /* no supplementary picture */
+ if (buf_size == 0)
+ return 0;
+
+ ff_init_cabac_decoder(c, buf, buf_size);
+ ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
+
+ memset(s->header_state, 0, sizeof(s->header_state));
+
+ s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P
+ decode_header(s);
+
+ frame_start(s);
+ //keyframe flag dupliaction mess FIXME
+ if(avctx->debug&FF_DEBUG_PICT_INFO)
+ av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog);
+
+ decode_subband(s, &s->mb_band , s->mb_band .buf, NULL, s->mb_band .stride, 0);
+ decode_subband(s, &s->mv_band[0], s->mv_band[0].buf, NULL, s->mv_band[0].stride, 0);
+ decode_subband(s, &s->mv_band[1], s->mv_band[1].buf, NULL, s->mv_band[1].stride, 0);
+ correlate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 1, 1);
+ correlate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 1, 1);
+ correlate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 1, 1);
+
+ for(plane_index=0; plane_index<3; plane_index++){
+ Plane *p= &s->plane[plane_index];
+ int w= p->width;
+ int h= p->height;
+ int x, y;
+
+if(s->avctx->debug&2048){
+ memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h);
+ predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
+
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
+ if(v&(~255)) v= ~(v>>31);
+ s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v;
+ }
+ }
+}
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ decode_subband(s, b, b->buf, b->parent ? b->parent->buf : NULL, b->stride, orientation);
+ if(orientation==0)
+ correlate(s, b, b->buf, b->stride, 1, 0);
+ }
+ }
+if(!(s->avctx->debug&1024))
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+
+ dequantize(s, b, b->buf, b->stride);
+ }
+ }
+
+#if QPRED
+ memset(s->pred_buffer, 0, sizeof(DWTELEM)*w*h);
+ predict_plane(s, s->pred_buffer, plane_index, 1);
+ spatial_dwt(s, s->pred_buffer, w, h, w);
+ for(level=0; level<s->spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ SubBand *b= &p->band[level][orientation];
+ int delta= ((int)s->pred_buffer - (int)s->spatial_dwt_buffer)/sizeof(DWTELEM);
+
+ quantize (s, b, b->buf + delta, b->stride, s->qbias);
+ dequantize(s, b, b->buf + delta, b->stride);
+ }
+ }
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ s->spatial_dwt_buffer[y*w + x]+= s->pred_buffer[y*w + x];
+ }
+ }
+ spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
+#else
+ spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
+ predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
+#endif
+
+ //FIXME optimize
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
+ if(v&(~255)) v= ~(v>>31);
+ s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]= v;
+ }
+ }
+ }
+
+ emms_c();
+
+ if(s->last_picture.data[0])
+ avctx->release_buffer(avctx, &s->last_picture);
+
+if(!(s->avctx->debug&2048))
+ *picture= s->current_picture;
+else
+ *picture= s->mconly_picture;
+
+ *data_size = sizeof(AVFrame);
+
+ bytes_read= get_cabac_terminate(c);
+ if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n");
+
+ return bytes_read;
+}
+
+static int decode_end(AVCodecContext *avctx)
+{
+ SnowContext *s = avctx->priv_data;
+
+ common_end(s);
+
+ return 0;
+}
+
+AVCodec snow_decoder = {
+ "snow",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_SNOW,
+ sizeof(SnowContext),
+ decode_init,
+ NULL,
+ decode_end,
+ decode_frame,
+ 0 /*CODEC_CAP_DR1*/ /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
+ NULL
+};
+
+AVCodec snow_encoder = {
+ "snow",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_SNOW,
+ sizeof(SnowContext),
+ encode_init,
+ encode_frame,
+ encode_end,
+};
+
+
+#if 0
+#undef malloc
+#undef free
+#undef printf
+
+int main(){
+ int width=256;
+ int height=256;
+ int buffer[2][width*height];
+ SnowContext s;
+ int i;
+ s.spatial_decomposition_count=6;
+ s.spatial_decomposition_type=1;
+
+ printf("testing 5/3 DWT\n");
+ for(i=0; i<width*height; i++)
+ buffer[0][i]= buffer[1][i]= random()%54321 - 12345;
+
+ spatial_dwt(&s, buffer[0], width, height, width);
+ spatial_idwt(&s, buffer[0], width, height, width);
+
+ for(i=0; i<width*height; i++)
+ if(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]);
+
+ printf("testing 9/7 DWT\n");
+ s.spatial_decomposition_type=0;
+ for(i=0; i<width*height; i++)
+ buffer[0][i]= buffer[1][i]= random()%54321 - 12345;
+
+ spatial_dwt(&s, buffer[0], width, height, width);
+ spatial_idwt(&s, buffer[0], width, height, width);
+
+ for(i=0; i<width*height; i++)
+ if(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]);
+
+ printf("testing AC coder\n");
+ memset(s.header_state, 0, sizeof(s.header_state));
+ ff_init_cabac_encoder(&s.c, buffer[0], 256*256);
+ ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
+
+ for(i=-256; i<256; i++){
+START_TIMER
+ put_symbol(&s.c, s.header_state, i*i*i/3*ABS(i), 1);
+STOP_TIMER("put_symbol")
+ }
+ put_cabac_terminate(&s.c, 1);
+
+ memset(s.header_state, 0, sizeof(s.header_state));
+ ff_init_cabac_decoder(&s.c, buffer[0], 256*256);
+ ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
+
+ for(i=-256; i<256; i++){
+ int j;
+START_TIMER
+ j= get_symbol(&s.c, s.header_state, 1);
+STOP_TIMER("get_symbol")
+ if(j!=i*i*i/3*ABS(i)) printf("fsck: %d != %d\n", i, j);
+ }
+{
+int level, orientation, x, y;
+int64_t errors[8][4];
+int64_t g=0;
+
+ memset(errors, 0, sizeof(errors));
+ s.spatial_decomposition_count=3;
+ s.spatial_decomposition_type=0;
+ for(level=0; level<s.spatial_decomposition_count; level++){
+ for(orientation=level ? 1 : 0; orientation<4; orientation++){
+ int w= width >> (s.spatial_decomposition_count-level);
+ int h= height >> (s.spatial_decomposition_count-level);
+ int stride= width << (s.spatial_decomposition_count-level);
+ DWTELEM *buf= buffer[0];
+ int64_t error=0;
+
+ if(orientation&1) buf+=w;
+ if(orientation>1) buf+=stride>>1;
+
+ memset(buffer[0], 0, sizeof(int)*width*height);
+ buf[w/2 + h/2*stride]= 256*256;
+ spatial_idwt(&s, buffer[0], width, height, width);
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= buffer[0][x + y*width];
+ error += d*d;
+ if(ABS(width/2-x)<9 && ABS(height/2-y)<9 && level==2) printf("%8lld ", d);
+ }
+ if(ABS(height/2-y)<9 && level==2) printf("\n");
+ }
+ error= (int)(sqrt(error)+0.5);
+ errors[level][orientation]= error;
+ if(g) g=ff_gcd(g, error);
+ else g= error;
+ }
+ }
+ printf("static int const visual_weight[][4]={\n");
+ for(level=0; level<s.spatial_decomposition_count; level++){
+ printf(" {");
+ for(orientation=0; orientation<4; orientation++){
+ printf("%8lld,", errors[level][orientation]/g);
+ }
+ printf("},\n");
+ }
+ printf("};\n");
+ {
+ int level=2;
+ int orientation=3;
+ int w= width >> (s.spatial_decomposition_count-level);
+ int h= height >> (s.spatial_decomposition_count-level);
+ int stride= width << (s.spatial_decomposition_count-level);
+ DWTELEM *buf= buffer[0];
+ int64_t error=0;
+
+ buf+=w;
+ buf+=stride>>1;
+
+ memset(buffer[0], 0, sizeof(int)*width*height);
+#if 1
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int tab[4]={0,2,3,1};
+ buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)];
+ }
+ }
+ spatial_dwt(&s, buffer[0], width, height, width);
+#else
+ for(y=0; y<h; y++){
+ for(x=0; x<w; x++){
+ buf[x + y*stride ]=169;
+ buf[x + y*stride-w]=64;
+ }
+ }
+ spatial_idwt(&s, buffer[0], width, height, width);
+#endif
+ for(y=0; y<height; y++){
+ for(x=0; x<width; x++){
+ int64_t d= buffer[0][x + y*width];
+ error += d*d;
+ if(ABS(width/2-x)<9 && ABS(height/2-y)<9) printf("%8lld ", d);
+ }
+ if(ABS(height/2-y)<9) printf("\n");
+ }
+ }
+
+}
+ return 0;
+}
+#endif
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 10:18:39 +0000