*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav 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
- *
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+
/**
- * @file ffv1.c
- * FF Video Codec 1 (a experimental lossless codec)
+ * @file
+ * FF Video Codec 1 (a lossless codec)
*/
-#include "common.h"
+#include "libavutil/attributes.h"
+#include "libavutil/avassert.h"
#include "avcodec.h"
-#include "dsputil.h"
-#include "cabac.h"
+#include "get_bits.h"
+#include "put_bits.h"
+#include "rangecoder.h"
#include "golomb.h"
-
-#define MAX_PLANES 4
-#define CONTEXT_SIZE 32
-
-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 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,
+#include "mathops.h"
+#include "ffv1.h"
+
+const int8_t ffv1_quant5_10bit[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -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, -0, -0, -0, -0, -0, -0, -0, -0, -0,
};
-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,
+
+const int8_t ffv1_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 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,
+
+const int8_t ffv1_quant9_10bit[256] = {
+ 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, -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, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
};
-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,
+
+const int8_t ffv1_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 uint8_t log2_run[32]={
- 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
- 4, 4, 5, 5, 6, 6, 7, 7,
- 8, 9,10,11,12,13,14,15,
+const uint8_t ffv1_ver2_state[256] = {
+ 0, 10, 10, 10, 10, 16, 16, 16, 28, 16, 16, 29, 42, 49, 20, 49,
+ 59, 25, 26, 26, 27, 31, 33, 33, 33, 34, 34, 37, 67, 38, 39, 39,
+ 40, 40, 41, 79, 43, 44, 45, 45, 48, 48, 64, 50, 51, 52, 88, 52,
+ 53, 74, 55, 57, 58, 58, 74, 60, 101, 61, 62, 84, 66, 66, 68, 69,
+ 87, 82, 71, 97, 73, 73, 82, 75, 111, 77, 94, 78, 87, 81, 83, 97,
+ 85, 83, 94, 86, 99, 89, 90, 99, 111, 92, 93, 134, 95, 98, 105, 98,
+ 105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
+ 115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
+ 165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
+ 147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
+ 172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
+ 175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
+ 197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
+ 209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
+ 226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
+ 241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
};
-typedef struct VlcState{
- int16_t drift;
- uint16_t error_sum;
- int8_t bias;
- uint8_t count;
-} VlcState;
-
-typedef struct PlaneContext{
- int context_count;
- uint8_t (*state)[CONTEXT_SIZE];
- VlcState *vlc_state;
- uint8_t interlace_bit_state[2];
-} PlaneContext;
-
-typedef struct FFV1Context{
- AVCodecContext *avctx;
- CABACContext c;
- GetBitContext gb;
- PutBitContext pb;
- int version;
- int width, height;
- int chroma_h_shift, chroma_v_shift;
- int flags;
- int picture_number;
- AVFrame picture;
- int plane_count;
- int ac; ///< 1-> CABAC 0-> golomb rice
- PlaneContext plane[MAX_PLANES];
- int16_t quant_table[5][256];
-
- DSPContext dsp;
-}FFV1Context;
-
-static inline int predict(uint8_t *src, uint8_t *last){
- const int LT= last[-1];
- const int T= last[ 0];
- const int L = src[-1];
- uint8_t *cm = cropTbl + MAX_NEG_CROP;
- const int gradient= cm[L + T - LT];
-
- return mid_pred(L, gradient, T);
-}
-static inline int get_context(FFV1Context *f, uint8_t *src, uint8_t *last, uint8_t *last2){
- const int LT= last[-1];
- const int T= last[ 0];
- const int RT= last[ 1];
- const int L = src[-1];
-
- if(f->quant_table[3][127]){
- const int TT= last2[0];
- const int LL= src[-2];
- return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF]
- +f->quant_table[3][(LL-L) & 0xFF] + f->quant_table[4][(TT-T) & 0xFF];
- }else
- return f->quant_table[0][(L-LT) & 0xFF] + f->quant_table[1][(LT-T) & 0xFF] + f->quant_table[2][(T-RT) & 0xFF];
-}
+av_cold int ffv1_common_init(AVCodecContext *avctx)
+{
+ FFV1Context *s = avctx->priv_data;
-/**
- * put
- */
-static inline void put_symbol(CABACContext *c, uint8_t *state, int v, int is_signed, int max_exp){
- int i;
+ s->avctx = avctx;
+ s->flags = avctx->flags;
- if(v){
- const int a= ABS(v);
- const int e= av_log2(a);
+ if (!avctx->width || !avctx->height)
+ return AVERROR_INVALIDDATA;
- put_cabac(c, state+0, 0);
-
- for(i=0; i<e; i++){
- put_cabac(c, state+1+i, 1); //1..8
- }
+ s->width = avctx->width;
+ s->height = avctx->height;
- if(e<max_exp){
- put_cabac(c, state+1+i, 0); //1..8
+ // defaults
+ s->num_h_slices = 1;
+ s->num_v_slices = 1;
- for(i=e-1; i>=0; i--){
- put_cabac(c, state+16+e+i, (a>>i)&1); //17..29
- }
- if(is_signed)
- put_cabac(c, state+9 + e, v < 0); //9..16
- }
- }else{
- put_cabac(c, state+0, 1);
- }
+ return 0;
}
-static inline int get_symbol(CABACContext *c, uint8_t *state, int is_signed, int max_exp){
- if(get_cabac(c, state+0))
- return 0;
- else{
- int i, e;
-
- for(e=0; e<max_exp; e++){
- int a= 1<<e;
-
- if(get_cabac(c, state + 1 + e)==0){ // 1..8
- for(i=e-1; i>=0; i--){
- a += get_cabac(c, state+16+e+i)<<i; //17..29
- }
-
- if(is_signed && get_cabac(c, state+9 + e)) //9..16
- return -a;
- else
- return a;
- }
+int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
+{
+ int j;
+
+ fs->plane_count = f->plane_count;
+ fs->transparency = f->transparency;
+ for (j = 0; j < f->plane_count; j++) {
+ PlaneContext *const p = &fs->plane[j];
+
+ if (fs->ac) {
+ if (!p->state)
+ p->state = av_malloc(CONTEXT_SIZE * p->context_count *
+ sizeof(uint8_t));
+ if (!p->state)
+ return AVERROR(ENOMEM);
+ } else {
+ if (!p->vlc_state)
+ p->vlc_state = av_malloc(p->context_count * sizeof(VlcState));
+ if (!p->vlc_state)
+ return AVERROR(ENOMEM);
}
- return -(1<<e);
}
-}
-
-static inline void update_vlc_state(VlcState * const state, const int v){
- int drift= state->drift;
- int count= state->count;
- state->error_sum += ABS(v);
- drift += v;
-
- if(count == 128){ //FIXME variable
- count >>= 1;
- drift >>= 1;
- state->error_sum >>= 1;
- }
- count++;
-
- if(drift <= -count){
- if(state->bias > -128) state->bias--;
-
- drift += count;
- if(drift <= -count)
- drift= -count + 1;
- }else if(drift > 0){
- if(state->bias < 127) state->bias++;
-
- drift -= count;
- if(drift > 0)
- drift= 0;
- }
-
- state->drift= drift;
- state->count= count;
-}
-
-static inline void put_vlc_symbol(PutBitContext *pb, VlcState * const state, int v){
- int i, k, code;
-//printf("final: %d ", v);
- v = (int8_t)(v - state->bias);
-
- i= state->count;
- k=0;
- while(i < state->error_sum){ //FIXME optimize
- k++;
- i += i;
- }
-#if 0 // JPEG LS
- if(k==0 && 2*state->drift <= - state->count) code= v ^ (-1);
- else code= v;
-#else
- code= v ^ ((2*state->drift + state->count)>>31);
-#endif
-
- code = -2*code-1;
- code^= (code>>31);
-//printf("v:%d/%d bias:%d error:%d drift:%d count:%d k:%d\n", v, code, state->bias, state->error_sum, state->drift, state->count, k);
- set_ur_golomb(pb, code, k, 8, 8);
-
- update_vlc_state(state, v);
-}
-
-static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state){
- int k, i, v, ret;
- i= state->count;
- k=0;
- while(i < state->error_sum){ //FIXME optimize
- k++;
- i += i;
- }
-
- v= get_ur_golomb(gb, k, 8, 8);
-//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
-
- v++;
- if(v&1) v= (v>>1);
- else v= -(v>>1);
-
-#if 0 // JPEG LS
- if(k==0 && 2*state->drift <= - state->count) v ^= (-1);
-#else
- v ^= ((2*state->drift + state->count)>>31);
-#endif
-
- ret= (int8_t)(v + state->bias);
-
- update_vlc_state(state, v);
-//printf("final: %d\n", ret);
- return ret;
-}
-
-
-
-static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
- PlaneContext * const p= &s->plane[plane_index];
- CABACContext * const c= &s->c;
- int x,y;
- uint8_t pred_diff_buffer[4][w+6]; //FIXME rema,e
- uint8_t *pred_diff[4]= {pred_diff_buffer[0]+3, pred_diff_buffer[1]+3, pred_diff_buffer[2]+3, pred_diff_buffer[3]+3};
- int run_index=0;
-
- memset(pred_diff_buffer, 0, sizeof(pred_diff_buffer));
-
- for(y=0; y<h; y++){
- uint8_t *temp= pred_diff[0]; //FIXME try a normal buffer
- int run_count=0;
- int run_mode=0;
-
- pred_diff[0]= pred_diff[1];
- pred_diff[1]= pred_diff[2];
- pred_diff[2]= pred_diff[3];
- pred_diff[3]= temp;
-
- pred_diff[3][-1]= pred_diff[2][0 ];
- pred_diff[2][ w]= pred_diff[2][w-1];
-
- for(x=0; x<w; x++){
- uint8_t *temp_src= src + x + stride*y;
- int diff, context;
-
- context= get_context(s, pred_diff[3]+x, pred_diff[2]+x, pred_diff[1]+x);
- diff= temp_src[0] - predict(pred_diff[3]+x, pred_diff[2]+x);
-
- if(context < 0){
- context = -context;
- diff= -diff;
- }
-
- diff= (int8_t)diff;
-
- if(s->ac){
- put_symbol(c, p->state[context], diff, 1, 7);
- }else{
- if(context == 0) run_mode=1;
-
- if(run_mode){
-
- if(diff){
- while(run_count >= 1<<log2_run[run_index]){
- run_count -= 1<<log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
-
- put_bits(&s->pb, 1 + log2_run[run_index], run_count);
- if(run_index) run_index--;
- run_count=0;
- run_mode=0;
- if(diff>0) diff--;
- }else{
- run_count++;
- }
- }
-
-// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)get_bit_count(&s->pb));
-
- if(run_mode == 0)
- put_vlc_symbol(&s->pb, &p->vlc_state[context], diff);
- }
-
- pred_diff[3][x]= temp_src[0];
- }
- if(run_mode){
- while(run_count >= 1<<log2_run[run_index]){
- run_count -= 1<<log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
-
- if(run_count)
- put_bits(&s->pb, 1, 1);
+ if (fs->ac > 1) {
+ //FIXME only redo if state_transition changed
+ for (j = 1; j < 256; j++) {
+ fs->c.one_state[j] = f->state_transition[j];
+ fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j];
}
}
-}
-static void write_quant_table(CABACContext *c, int16_t *quant_table){
- int last=0;
- int i;
- uint8_t state[CONTEXT_SIZE]={0};
-
- for(i=1; i<128 ; i++){
- if(quant_table[i] != quant_table[i-1]){
- put_symbol(c, state, i-last-1, 0, 7);
- last= i;
- }
- }
- put_symbol(c, state, i-last-1, 0, 7);
+ return 0;
}
-static void write_header(FFV1Context *f){
- uint8_t state[CONTEXT_SIZE]={0};
+av_cold int ffv1_init_slice_contexts(FFV1Context *f)
+{
int i;
- CABACContext * const c= &f->c;
-
- put_symbol(c, state, f->version, 0, 7);
- put_symbol(c, state, f->avctx->coder_type, 0, 7);
- put_symbol(c, state, 0, 0, 7); //YUV cs type
- put_cabac(c, state, 1); //chroma planes
- put_symbol(c, state, f->chroma_h_shift, 0, 7);
- put_symbol(c, state, f->chroma_v_shift, 0, 7);
- put_cabac(c, state, 0); //no transparency plane
-
- for(i=0; i<5; i++)
- write_quant_table(c, f->quant_table[i]);
-}
-static int common_init(AVCodecContext *avctx){
- FFV1Context *s = avctx->priv_data;
- int width, height;
-
- s->avctx= avctx;
- s->flags= avctx->flags;
-
- dsputil_init(&s->dsp, avctx);
-
- width= s->width= avctx->width;
- height= s->height= avctx->height;
-
- assert(width && height);
+ f->slice_count = f->num_h_slices * f->num_v_slices;
+ if (f->slice_count <= 0) {
+ av_log(f->avctx, AV_LOG_ERROR, "Invalid number of slices\n");
+ return AVERROR(EINVAL);
+ }
+ for (i = 0; i < f->slice_count; i++) {
+ FFV1Context *fs = av_mallocz(sizeof(*fs));
+ int sx = i % f->num_h_slices;
+ int sy = i / f->num_h_slices;
+ int sxs = f->avctx->width * sx / f->num_h_slices;
+ int sxe = f->avctx->width * (sx + 1) / f->num_h_slices;
+ int sys = f->avctx->height * sy / f->num_v_slices;
+ int sye = f->avctx->height * (sy + 1) / f->num_v_slices;
+ f->slice_context[i] = fs;
+ memcpy(fs, f, sizeof(*fs));
+ memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2));
+
+ fs->slice_width = sxe - sxs;
+ fs->slice_height = sye - sys;
+ fs->slice_x = sxs;
+ fs->slice_y = sys;
+
+ fs->sample_buffer = av_malloc(3 * MAX_PLANES * (fs->width + 6) *
+ sizeof(*fs->sample_buffer));
+ if (!fs->sample_buffer)
+ return AVERROR(ENOMEM);
+ }
return 0;
}
-static int encode_init(AVCodecContext *avctx)
+int ffv1_allocate_initial_states(FFV1Context *f)
{
- FFV1Context *s = avctx->priv_data;
int i;
- common_init(avctx);
-
- s->version=0;
- s->ac= avctx->coder_type;
-
- s->plane_count=3;
- for(i=0; i<256; i++){
- s->quant_table[0][i]= quant11[i];
- s->quant_table[1][i]= 11*quant11[i];
- if(avctx->context_model==0){
- s->quant_table[2][i]= 11*11*quant11[i];
- s->quant_table[3][i]=
- s->quant_table[4][i]=0;
- }else{
- s->quant_table[2][i]= 11*11*quant5 [i];
- s->quant_table[3][i]= 5*11*11*quant5 [i];
- s->quant_table[4][i]= 5*5*11*11*quant5 [i];
- }
- }
-
- for(i=0; i<s->plane_count; i++){
- PlaneContext * const p= &s->plane[i];
-
- if(avctx->context_model==0){
- p->context_count= (11*11*11+1)/2;
- }else{
- p->context_count= (11*11*5*5*5+1)/2;
- }
-
- if(s->ac){
- if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
- }else{
- if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
- }
- }
-
- avctx->coded_frame= &s->picture;
- switch(avctx->pix_fmt){
- case PIX_FMT_YUV444P:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV411P:
- case PIX_FMT_YUV410P:
- avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
- break;
- default:
- fprintf(stderr, "format not supported\n");
- return -1;
+ for (i = 0; i < f->quant_table_count; i++) {
+ f->initial_states[i] = av_malloc(f->context_count[i] *
+ sizeof(*f->initial_states[i]));
+ if (!f->initial_states[i])
+ return AVERROR(ENOMEM);
+ memset(f->initial_states[i], 128,
+ f->context_count[i] * sizeof(*f->initial_states[i]));
}
-
-
- s->picture_number=0;
-
return 0;
}
-
-static void clear_state(FFV1Context *f){
+void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
+{
int i, j;
- for(i=0; i<f->plane_count; i++){
- PlaneContext *p= &f->plane[i];
-
- p->interlace_bit_state[0]= 0;
- p->interlace_bit_state[1]= 0;
-
- for(j=0; j<p->context_count; j++){
- if(f->ac){
- memset(p->state[j], 0, sizeof(uint8_t)*CONTEXT_SIZE);
- p->state[j][7] = 2*62;
- }else{
- p->vlc_state[j].drift= 0;
- p->vlc_state[j].error_sum= 4; //FFMAX((RANGE + 32)/64, 2);
- p->vlc_state[j].bias= 0;
- p->vlc_state[j].count= 1;
+ for (i = 0; i < f->plane_count; i++) {
+ PlaneContext *p = &fs->plane[i];
+
+ p->interlace_bit_state[0] = 128;
+ p->interlace_bit_state[1] = 128;
+
+ if (fs->ac) {
+ if (f->initial_states[p->quant_table_index]) {
+ memcpy(p->state, f->initial_states[p->quant_table_index],
+ CONTEXT_SIZE * p->context_count);
+ } else
+ memset(p->state, 128, CONTEXT_SIZE * p->context_count);
+ } else {
+ for (j = 0; j < p->context_count; j++) {
+ p->vlc_state[j].drift = 0;
+ p->vlc_state[j].error_sum = 4; //FFMAX((RANGE + 32)/64, 2);
+ p->vlc_state[j].bias = 0;
+ p->vlc_state[j].count = 1;
}
}
}
}
-static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
- FFV1Context *f = avctx->priv_data;
- CABACContext * const c= &f->c;
- AVFrame *pict = data;
- const int width= f->width;
- const int height= f->height;
- AVFrame * const p= &f->picture;
- int used_count= 0;
-
- if(avctx->strict_std_compliance >= 0){
- printf("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);
-
- *p = *pict;
- p->pict_type= FF_I_TYPE;
-
- if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){
- put_cabac_bypass(c, 1);
- p->key_frame= 1;
- write_header(f);
- clear_state(f);
- }else{
- put_cabac_bypass(c, 0);
- p->key_frame= 0;
- }
-
- if(!f->ac){
- used_count += put_cabac_terminate(c, 1);
-//printf("pos=%d\n", used_count);
- init_put_bits(&f->pb, buf + used_count, buf_size - used_count, NULL, NULL);
- }
-
- if(1){
- const int chroma_width = -((-width )>>f->chroma_h_shift);
- const int chroma_height= -((-height)>>f->chroma_v_shift);
-
- encode_plane(f, p->data[0], width, height, p->linesize[0], 0);
-
- encode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1);
- encode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 2);
- }
- emms_c();
-
- f->picture_number++;
-
- if(f->ac){
- return put_cabac_terminate(c, 1);
- }else{
- flush_put_bits(&f->pb); //nicer padding FIXME
- return used_count + (get_bit_count(&f->pb)+7)/8;
- }
-}
-
-static void common_end(FFV1Context *s){
- int i;
-
- for(i=0; i<s->plane_count; i++){
- PlaneContext *p= &s->plane[i];
-
- av_freep(&p->state);
- }
-}
-
-static int encode_end(AVCodecContext *avctx)
+av_cold int ffv1_close(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
+ int i, j;
- common_end(s);
-
- return 0;
-}
-
-static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
- PlaneContext * const p= &s->plane[plane_index];
- CABACContext * const c= &s->c;
- int x,y;
- uint8_t pred_diff_buffer[4][w+6];
- uint8_t *pred_diff[4]= {pred_diff_buffer[0]+3, pred_diff_buffer[1]+3, pred_diff_buffer[2]+3, pred_diff_buffer[3]+3};
- int run_index=0;
-
- memset(pred_diff_buffer, 0, sizeof(pred_diff_buffer));
-
- for(y=0; y<h; y++){
- uint8_t *temp= pred_diff[0]; //FIXME try a normal buffer
- int run_count=0;
- int run_mode=0;
-
- pred_diff[0]= pred_diff[1];
- pred_diff[1]= pred_diff[2];
- pred_diff[2]= pred_diff[3];
- pred_diff[3]= temp;
-
- pred_diff[3][-1]= pred_diff[2][0 ];
- pred_diff[2][ w]= pred_diff[2][w-1];
-
- for(x=0; x<w; x++){
- uint8_t *temp_src= src + x + stride*y;
- int diff, context, sign;
-
- context= get_context(s, pred_diff[3] + x, pred_diff[2] + x, pred_diff[1] + x);
- if(context < 0){
- context= -context;
- sign=1;
- }else
- sign=0;
-
-
- if(s->ac)
- diff= get_symbol(c, p->state[context], 1, 7);
- else{
- if(context == 0 && run_mode==0) run_mode=1;
-
- if(run_mode){
- if(run_count==0 && run_mode==1){
- if(get_bits1(&s->gb)){
- run_count = 1<<log2_run[run_index];
- if(x + run_count <= w) run_index++;
- }else{
- if(log2_run[run_index]) run_count = get_bits(&s->gb, log2_run[run_index]);
- else run_count=0;
- if(run_index) run_index--;
- run_mode=2;
- }
- }
- run_count--;
- if(run_count < 0){
- run_mode=0;
- run_count=0;
- diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]);
- if(diff>=0) diff++;
- }else
- diff=0;
- }else
- diff= get_vlc_symbol(&s->gb, &p->vlc_state[context]);
-
-// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, get_bits_count(&s->gb));
- }
-
- if(sign) diff= (int8_t)(-diff); //FIXME remove cast
-
- pred_diff[3][x]=
- temp_src[0] = predict(pred_diff[3] + x, pred_diff[2] + x) + diff;
-
- assert(diff>= -128 && diff <= 127);
- }
- }
-}
-
-static int read_quant_table(CABACContext *c, int16_t *quant_table, int scale){
- int v;
- int i=0;
- uint8_t state[CONTEXT_SIZE]={0};
-
- for(v=0; i<128 ; v++){
- int len= get_symbol(c, state, 0, 7) + 1;
-
- if(len + i > 128) return -1;
-
- while(len--){
- quant_table[i] = scale*v;
- i++;
-//printf("%2d ",v);
-//if(i%16==0) printf("\n");
- }
- }
-
- for(i=1; i<128; i++){
- quant_table[256-i]= -quant_table[i];
- }
- quant_table[128]= -quant_table[127];
-
- return 2*v - 1;
-}
-
-static int read_header(FFV1Context *f){
- uint8_t state[CONTEXT_SIZE]={0};
- int i, context_count;
- CABACContext * const c= &f->c;
-
- f->version= get_symbol(c, state, 0, 7);
- f->ac= f->avctx->coder_type= get_symbol(c, state, 0, 7);
- get_symbol(c, state, 0, 7); //YUV cs type
- get_cabac(c, state); //no chroma = false
- f->chroma_h_shift= get_symbol(c, state, 0, 7);
- f->chroma_v_shift= get_symbol(c, state, 0, 7);
- get_cabac(c, state); //transparency plane
- f->plane_count= 3;
-
- switch(16*f->chroma_h_shift + f->chroma_v_shift){
- case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P; break;
- case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P; break;
- case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P; break;
- case 0x20: f->avctx->pix_fmt= PIX_FMT_YUV411P; break;
- case 0x33: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;
- default:
- fprintf(stderr, "format not supported\n");
- return -1;
- }
-//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
-
- context_count=1;
- for(i=0; i<5; i++){
- context_count*= read_quant_table(c, f->quant_table[i], context_count);
- if(context_count < 0){
- printf("read_quant_table error\n");
- return -1;
- }
- }
- context_count= (context_count+1)/2;
-
- for(i=0; i<f->plane_count; i++){
- PlaneContext * const p= &f->plane[i];
-
- p->context_count= context_count;
+ for (j = 0; j < s->slice_count; j++) {
+ FFV1Context *fs = s->slice_context[j];
+ for (i = 0; i < s->plane_count; i++) {
+ PlaneContext *p = &fs->plane[i];
- if(f->ac){
- if(!p->state) p->state= av_malloc(CONTEXT_SIZE*p->context_count*sizeof(uint8_t));
- }else{
- if(!p->vlc_state) p->vlc_state= av_malloc(p->context_count*sizeof(VlcState));
+ av_freep(&p->state);
+ av_freep(&p->vlc_state);
}
+ av_freep(&fs->sample_buffer);
}
-
- return 0;
-}
-static int decode_init(AVCodecContext *avctx)
-{
-// FFV1Context *s = avctx->priv_data;
-
- common_init(avctx);
-
-#if 0
- switch(s->bitstream_bpp){
- case 12:
- avctx->pix_fmt = PIX_FMT_YUV420P;
- break;
- case 16:
- avctx->pix_fmt = PIX_FMT_YUV422P;
- break;
- case 24:
- case 32:
- if(s->bgr32){
- avctx->pix_fmt = PIX_FMT_RGBA32;
- }else{
- avctx->pix_fmt = PIX_FMT_BGR24;
+ av_freep(&avctx->stats_out);
+ for (j = 0; j < s->quant_table_count; j++) {
+ av_freep(&s->initial_states[j]);
+ for (i = 0; i < s->slice_count; i++) {
+ FFV1Context *sf = s->slice_context[i];
+ av_freep(&sf->rc_stat2[j]);
}
- break;
- default:
- assert(0);
+ av_freep(&s->rc_stat2[j]);
}
-#endif
-
- return 0;
-}
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){
- FFV1Context *f = avctx->priv_data;
- CABACContext * const c= &f->c;
- const int width= f->width;
- const int height= f->height;
- AVFrame * const p= &f->picture;
- int bytes_read;
-
- AVFrame *picture = data;
-
- *data_size = 0;
-
- /* 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);
-
- p->pict_type= FF_I_TYPE; //FIXME I vs. P
- if(get_cabac_bypass(c)){
- p->key_frame= 1;
- read_header(f);
- clear_state(f);
- }else{
- p->key_frame= 0;
- }
-
- p->reference= 0;
- if(avctx->get_buffer(avctx, p) < 0){
- fprintf(stderr, "get_buffer() failed\n");
- return -1;
- }
-
- if(avctx->debug&FF_DEBUG_PICT_INFO)
- printf("keyframe:%d coder:%d\n", p->key_frame, f->ac);
-
- if(!f->ac){
- bytes_read = get_cabac_terminate(c);
- if(bytes_read ==0) printf("error at end of AC stream\n");
-//printf("pos=%d\n", bytes_read);
- init_get_bits(&f->gb, buf + bytes_read, buf_size - bytes_read);
- }
-
- if(1){
- const int chroma_width = -((-width )>>f->chroma_h_shift);
- const int chroma_height= -((-height)>>f->chroma_v_shift);
- decode_plane(f, p->data[0], width, height, p->linesize[0], 0);
-
- decode_plane(f, p->data[1], chroma_width, chroma_height, p->linesize[1], 1);
- decode_plane(f, p->data[2], chroma_width, chroma_height, p->linesize[2], 2);
- }
-
- emms_c();
-
- f->picture_number++;
-
- *picture= *p;
-
- avctx->release_buffer(avctx, p); //FIXME
-
- *data_size = sizeof(AVFrame);
-
- if(f->ac){
- bytes_read= get_cabac_terminate(c);
- if(bytes_read ==0) printf("error at end of frame\n");
- }else{
- bytes_read+= (get_bits_count(&f->gb)+7)/8;
- }
-
- return bytes_read;
-}
-
-static int decode_end(AVCodecContext *avctx)
-{
- FFV1Context *s = avctx->priv_data;
- int i;
-
- if(avctx->get_buffer == avcodec_default_get_buffer){
- for(i=0; i<4; i++){
- av_freep(&s->picture.base[i]);
- s->picture.data[i]= NULL;
- }
- av_freep(&s->picture.opaque);
- }
+ for (i = 0; i < s->slice_count; i++)
+ av_freep(&s->slice_context[i]);
return 0;
}
-
-AVCodec ffv1_decoder = {
- "ffv1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FFV1,
- sizeof(FFV1Context),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
- NULL
-};
-
-#ifdef CONFIG_ENCODERS
-AVCodec ffv1_encoder = {
- "ffv1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_FFV1,
- sizeof(FFV1Context),
- encode_init,
- encode_frame,
- encode_end,
-};
-#endif