*
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* FF Video Codec 1 (a lossless codec)
*/
+#include "libavutil/attributes.h"
+
#include "avcodec.h"
-#include "get_bits.h"
#include "put_bits.h"
-#include "dsputil.h"
#include "rangecoder.h"
-#include "golomb.h"
#include "mathops.h"
-#include "libavutil/avassert.h"
-
-#define MAX_PLANES 4
-#define CONTEXT_SIZE 32
-
-#define MAX_QUANT_TABLES 8
-#define MAX_CONTEXT_INPUTS 5
-
-extern const uint8_t ff_log2_run[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,
+#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 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,
+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 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 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,
+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 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,
+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 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,
+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{
- int16_t quant_table[MAX_CONTEXT_INPUTS][256];
- int context_count;
- uint8_t (*state)[CONTEXT_SIZE];
- VlcState *vlc_state;
- uint8_t interlace_bit_state[2];
-} PlaneContext;
-
-#define MAX_SLICES 256
-
-typedef struct FFV1Context{
- AVCodecContext *avctx;
- RangeCoder 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=range coder <-> 0=golomb rice
- PlaneContext plane[MAX_PLANES];
- int16_t quant_table[MAX_CONTEXT_INPUTS][256];
- int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256];
- int context_count[MAX_QUANT_TABLES];
- uint8_t state_transition[256];
- int run_index;
- int colorspace;
- int_fast16_t *sample_buffer;
-
- int quant_table_count;
-
- DSPContext dsp;
-
- struct FFV1Context *slice_context[MAX_SLICES];
- int slice_count;
- int num_v_slices;
- int num_h_slices;
- int slice_width;
- int slice_height;
- int slice_x;
- int slice_y;
-}FFV1Context;
-
-static av_always_inline int fold(int diff, int bits){
- if(bits==8)
- diff= (int8_t)diff;
- else{
- diff+= 1<<(bits-1);
- diff&=(1<<bits)-1;
- diff-= 1<<(bits-1);
- }
-
- return diff;
-}
-
-static inline int predict(int_fast16_t *src, int_fast16_t *last){
- const int LT= last[-1];
- const int T= last[ 0];
- const int L = src[-1];
-
- return mid_pred(L, L + T - LT, T);
-}
-
-static inline int get_context(PlaneContext *p, int_fast16_t *src, int_fast16_t *last, int_fast16_t *last2){
- const int LT= last[-1];
- const int T= last[ 0];
- const int RT= last[ 1];
- const int L = src[-1];
-
- if(p->quant_table[3][127]){
- const int TT= last2[0];
- const int LL= src[-2];
- return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF]
- +p->quant_table[3][(LL-L) & 0xFF] + p->quant_table[4][(TT-T) & 0xFF];
- }else
- return p->quant_table[0][(L-LT) & 0xFF] + p->quant_table[1][(LT-T) & 0xFF] + p->quant_table[2][(T-RT) & 0xFF];
-}
-
-static inline void put_symbol_inline(RangeCoder *c, uint8_t *state, int v, int is_signed){
- int i;
-
- if(v){
- const int a= FFABS(v);
- const int e= av_log2(a);
- put_rac(c, state+0, 0);
- if(e<=9){
- for(i=0; i<e; i++){
- put_rac(c, state+1+i, 1); //1..10
- }
- put_rac(c, state+1+i, 0);
-
- for(i=e-1; i>=0; i--){
- put_rac(c, state+22+i, (a>>i)&1); //22..31
- }
-
- if(is_signed)
- put_rac(c, state+11 + e, v < 0); //11..21
- }else{
- for(i=0; i<e; i++){
- put_rac(c, state+1+FFMIN(i,9), 1); //1..10
- }
- put_rac(c, state+1+9, 0);
-
- for(i=e-1; i>=0; i--){
- put_rac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
- }
-
- if(is_signed)
- put_rac(c, state+11 + 10, v < 0); //11..21
- }
- }else{
- put_rac(c, state+0, 1);
- }
-}
-
-static void av_noinline put_symbol(RangeCoder *c, uint8_t *state, int v, int is_signed){
- put_symbol_inline(c, state, v, is_signed);
-}
-
-static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed){
- if(get_rac(c, state+0))
- return 0;
- else{
- int i, e, a;
- e= 0;
- while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10
- e++;
- }
-
- a= 1;
- for(i=e-1; i>=0; i--){
- a += a + get_rac(c, state+22 + FFMIN(i,9)); //22..31
- }
-
- e= -(is_signed && get_rac(c, state+11 + FFMIN(e, 10))); //11..21
- return (a^e)-e;
- }
-}
-
-static int av_noinline get_symbol(RangeCoder *c, uint8_t *state, int is_signed){
- return get_symbol_inline(c, state, is_signed);
-}
-
-static inline void update_vlc_state(VlcState * const state, const int v){
- int drift= state->drift;
- int count= state->count;
- state->error_sum += FFABS(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 bits){
- int i, k, code;
-//printf("final: %d ", v);
- v = fold(v - state->bias, bits);
-
- i= state->count;
- k=0;
- while(i < state->error_sum){ //FIXME optimize
- k++;
- i += i;
- }
-
- assert(k<=8);
-
-#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
-
-//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_sr_golomb(pb, code, k, 12, bits);
-
- update_vlc_state(state, v);
-}
-
-static inline int get_vlc_symbol(GetBitContext *gb, VlcState * const state, int bits){
- int k, i, v, ret;
-
- i= state->count;
- k=0;
- while(i < state->error_sum){ //FIXME optimize
- k++;
- i += i;
- }
-
- assert(k<=8);
-
- v= get_sr_golomb(gb, k, 12, bits);
-//printf("v:%d bias:%d error:%d drift:%d count:%d k:%d", v, state->bias, state->error_sum, state->drift, state->count, k);
-
-#if 0 // JPEG LS
- if(k==0 && 2*state->drift <= - state->count) v ^= (-1);
-#else
- v ^= ((2*state->drift + state->count)>>31);
-#endif
-
- ret= fold(v + state->bias, bits);
-
- update_vlc_state(state, v);
-//printf("final: %d\n", ret);
- return ret;
-}
-
-#if CONFIG_FFV1_ENCODER
-static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){
- PlaneContext * const p= &s->plane[plane_index];
- RangeCoder * const c= &s->c;
- int x;
- int run_index= s->run_index;
- int run_count=0;
- int run_mode=0;
-
- if(s->ac){
- if(c->bytestream_end - c->bytestream < w*20){
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
- }else{
- if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < w*4){
- av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
- }
- }
-
- for(x=0; x<w; x++){
- int diff, context;
-
- context= get_context(p, sample[0]+x, sample[1]+x, sample[2]+x);
- diff= sample[0][x] - predict(sample[0]+x, sample[1]+x);
-
- if(context < 0){
- context = -context;
- diff= -diff;
- }
-
- diff= fold(diff, bits);
-
- if(s->ac){
- put_symbol_inline(c, p->state[context], diff, 1);
- }else{
- if(context == 0) run_mode=1;
- if(run_mode){
+av_cold int ffv1_common_init(AVCodecContext *avctx)
+{
+ FFV1Context *s = avctx->priv_data;
- if(diff){
- while(run_count >= 1<<ff_log2_run[run_index]){
- run_count -= 1<<ff_log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
+ s->avctx = avctx;
+ s->flags = avctx->flags;
- put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
- if(run_index) run_index--;
- run_count=0;
- run_mode=0;
- if(diff>0) diff--;
- }else{
- run_count++;
- }
- }
+ if (!avctx->width || !avctx->height)
+ return AVERROR_INVALIDDATA;
-// printf("count:%d index:%d, mode:%d, x:%d y:%d pos:%d\n", run_count, run_index, run_mode, x, y, (int)put_bits_count(&s->pb));
+ s->width = avctx->width;
+ s->height = avctx->height;
- if(run_mode == 0)
- put_vlc_symbol(&s->pb, &p->vlc_state[context], diff, bits);
- }
- }
- if(run_mode){
- while(run_count >= 1<<ff_log2_run[run_index]){
- run_count -= 1<<ff_log2_run[run_index];
- run_index++;
- put_bits(&s->pb, 1, 1);
- }
-
- if(run_count)
- put_bits(&s->pb, 1, 1);
- }
- s->run_index= run_index;
+ // defaults
+ s->num_h_slices = 1;
+ s->num_v_slices = 1;
return 0;
}
-static void encode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
- int x,y,i;
- const int ring_size= s->avctx->context_model ? 3 : 2;
- int_fast16_t *sample[3];
- s->run_index=0;
-
- memset(s->sample_buffer, 0, ring_size*(w+6)*sizeof(*s->sample_buffer));
-
- for(y=0; y<h; y++){
- for(i=0; i<ring_size; i++)
- sample[i]= s->sample_buffer + (w+6)*((h+i-y)%ring_size) + 3;
-
- sample[0][-1]= sample[1][0 ];
- sample[1][ w]= sample[1][w-1];
-//{START_TIMER
- if(s->avctx->bits_per_raw_sample<=8){
- for(x=0; x<w; x++){
- sample[0][x]= src[x + stride*y];
- }
- encode_line(s, w, sample, plane_index, 8);
- }else{
- for(x=0; x<w; x++){
- sample[0][x]= ((uint16_t*)(src + stride*y))[x] >> (16 - s->avctx->bits_per_raw_sample);
- }
- encode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
- }
-//STOP_TIMER("encode line")}
- }
-}
-
-static void encode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
- int x, y, p, i;
- const int ring_size= s->avctx->context_model ? 3 : 2;
- int_fast16_t *sample[3][3];
- s->run_index=0;
-
- memset(s->sample_buffer, 0, ring_size*3*(w+6)*sizeof(*s->sample_buffer));
-
- for(y=0; y<h; y++){
- for(i=0; i<ring_size; i++)
- for(p=0; p<3; p++)
- sample[p][i]= s->sample_buffer + p*ring_size*(w+6) + ((h+i-y)%ring_size)*(w+6) + 3;
-
- for(x=0; x<w; x++){
- int v= src[x + stride*y];
- int b= v&0xFF;
- int g= (v>>8)&0xFF;
- int r= (v>>16)&0xFF;
-
- b -= g;
- r -= g;
- g += (b + r)>>2;
- b += 0x100;
- r += 0x100;
-
-// assert(g>=0 && b>=0 && r>=0);
-// assert(g<256 && b<512 && r<512);
- sample[0][0][x]= g;
- sample[1][0][x]= b;
- sample[2][0][x]= r;
- }
- for(p=0; p<3; p++){
- sample[p][0][-1]= sample[p][1][0 ];
- sample[p][1][ w]= sample[p][1][w-1];
- encode_line(s, w, sample[p], FFMIN(p, 1), 9);
- }
- }
-}
+int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
+{
+ int j;
-static void write_quant_table(RangeCoder *c, int16_t *quant_table){
- int last=0;
- int i;
- uint8_t state[CONTEXT_SIZE];
- memset(state, 128, sizeof(state));
+ fs->plane_count = f->plane_count;
+ fs->transparency = f->transparency;
+ for (j = 0; j < f->plane_count; j++) {
+ PlaneContext *const p = &fs->plane[j];
- for(i=1; i<128 ; i++){
- if(quant_table[i] != quant_table[i-1]){
- put_symbol(c, state, i-last-1, 0);
- last= i;
+ if (fs->ac != AC_GOLOMB_RICE) {
+ 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);
}
}
- put_symbol(c, state, i-last-1, 0);
-}
-static void write_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){
- int i;
- for(i=0; i<5; i++)
- write_quant_table(c, quant_table[i]);
-}
-
-static void write_header(FFV1Context *f){
- uint8_t state[CONTEXT_SIZE];
- int i, j;
- RangeCoder * const c= &f->slice_context[0]->c;
-
- memset(state, 128, sizeof(state));
-
- if(f->version < 2){
- put_symbol(c, state, f->version, 0);
- put_symbol(c, state, f->ac, 0);
- if(f->ac>1){
- for(i=1; i<256; i++){
- f->state_transition[i]=ver2_state[i];
- put_symbol(c, state, ver2_state[i] - c->one_state[i], 1);
- }
- }
- put_symbol(c, state, f->colorspace, 0); //YUV cs type
- if(f->version>0)
- put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
- put_rac(c, state, 1); //chroma planes
- put_symbol(c, state, f->chroma_h_shift, 0);
- put_symbol(c, state, f->chroma_v_shift, 0);
- put_rac(c, state, 0); //no transparency plane
-
- write_quant_tables(c, f->quant_table);
- }else{
- put_symbol(c, state, f->slice_count, 0);
- for(i=0; i<f->slice_count; i++){
- FFV1Context *fs= f->slice_context[i];
- put_symbol(c, state, (fs->slice_x +1)*f->num_h_slices / f->width , 0);
- put_symbol(c, state, (fs->slice_y +1)*f->num_v_slices / f->height , 0);
- put_symbol(c, state, (fs->slice_width +1)*f->num_h_slices / f->width -1, 0);
- put_symbol(c, state, (fs->slice_height+1)*f->num_v_slices / f->height-1, 0);
- for(j=0; j<f->plane_count; j++)
- put_symbol(c, state, f->avctx->context_model, 0);
+ if (fs->ac == AC_RANGE_CUSTOM_TAB) {
+ //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];
}
}
-}
-#endif /* CONFIG_FFV1_ENCODER */
-
-static av_cold int common_init(AVCodecContext *avctx){
- FFV1Context *s = avctx->priv_data;
-
- s->avctx= avctx;
- s->flags= avctx->flags;
-
- dsputil_init(&s->dsp, avctx);
-
- s->width = avctx->width;
- s->height= avctx->height;
-
- assert(s->width && s->height);
- //defaults
- s->num_h_slices=1;
- s->num_v_slices=1;
-
return 0;
}
-static int init_slice_state(FFV1Context *f){
+av_cold int ffv1_init_slice_contexts(FFV1Context *f)
+{
int i, j;
- for(i=0; i<f->slice_count; i++){
- FFV1Context *fs= f->slice_context[i];
- 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);
- }
- }
-
- if (fs->ac>1){
- //FIXME only redo if state_transition changed
- for(j=1; j<256; j++){
- fs->c.one_state [ j]= fs->state_transition[j];
- fs->c.zero_state[256-j]= 256-fs->c.one_state [j];
- }
- }
+ 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);
}
- return 0;
-}
-
-static av_cold int init_slice_contexts(FFV1Context *f){
- int i;
-
- f->slice_count= f->num_h_slices * f->num_v_slices;
+ for (i = 0; i < f->slice_count; i++) {
+ 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;
+ FFV1Context *fs = av_mallocz(sizeof(*fs));
+ if (!fs)
+ goto memfail;
- 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;
+ 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->slice_width = sxe - sxs;
+ fs->slice_height = sye - sys;
+ fs->slice_x = sxs;
+ fs->slice_y = sys;
- fs->sample_buffer = av_malloc(6 * (fs->width+6) * sizeof(*fs->sample_buffer));
- if (!fs->sample_buffer)
- return AVERROR(ENOMEM);
+ fs->sample_buffer = av_malloc(3 * MAX_PLANES * (fs->width + 6) *
+ sizeof(*fs->sample_buffer));
+ if (!fs->sample_buffer) {
+ av_free(fs);
+ goto memfail;
+ }
}
return 0;
-}
-
-#if CONFIG_FFV1_ENCODER
-static int write_extra_header(FFV1Context *f){
- RangeCoder * const c= &f->c;
- uint8_t state[CONTEXT_SIZE];
- int i;
- memset(state, 128, sizeof(state));
- f->avctx->extradata= av_malloc(f->avctx->extradata_size= 10000);
- ff_init_range_encoder(c, f->avctx->extradata, f->avctx->extradata_size);
- ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
- put_symbol(c, state, f->version, 0);
- put_symbol(c, state, f->ac, 0);
- if(f->ac>1){
- for(i=1; i<256; i++){
- f->state_transition[i]=ver2_state[i];
- put_symbol(c, state, ver2_state[i] - c->one_state[i], 1);
- }
+memfail:
+ for (j = 0; j < i; j++) {
+ av_free(f->slice_context[j]->sample_buffer);
+ av_free(f->slice_context[j]);
}
- put_symbol(c, state, f->colorspace, 0); //YUV cs type
- put_symbol(c, state, f->avctx->bits_per_raw_sample, 0);
- put_rac(c, state, 1); //chroma planes
- put_symbol(c, state, f->chroma_h_shift, 0);
- put_symbol(c, state, f->chroma_v_shift, 0);
- put_rac(c, state, 0); //no transparency plane
- put_symbol(c, state, f->num_h_slices-1, 0);
- put_symbol(c, state, f->num_v_slices-1, 0);
-
- put_symbol(c, state, f->quant_table_count, 0);
- for(i=0; i<f->quant_table_count; i++)
- write_quant_tables(c, f->quant_tables[i]);
-
- f->avctx->extradata_size= ff_rac_terminate(c);
-
- return 0;
+ return AVERROR(ENOMEM);
}
-static av_cold 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 ? 2:0;
-
- s->plane_count=2;
- for(i=0; i<256; i++){
- s->quant_table_count=2;
- if(avctx->bits_per_raw_sample <=8){
- s->quant_tables[0][0][i]= quant11[i];
- s->quant_tables[0][1][i]= 11*quant11[i];
- s->quant_tables[0][2][i]= 11*11*quant11[i];
- s->quant_tables[1][0][i]= quant11[i];
- s->quant_tables[1][1][i]= 11*quant11[i];
- s->quant_tables[1][2][i]= 11*11*quant5 [i];
- s->quant_tables[1][3][i]= 5*11*11*quant5 [i];
- s->quant_tables[1][4][i]= 5*5*11*11*quant5 [i];
- }else{
- s->quant_tables[0][0][i]= quant9_10bit[i];
- s->quant_tables[0][1][i]= 11*quant9_10bit[i];
- s->quant_tables[0][2][i]= 11*11*quant9_10bit[i];
- s->quant_tables[1][0][i]= quant9_10bit[i];
- s->quant_tables[1][1][i]= 11*quant9_10bit[i];
- s->quant_tables[1][2][i]= 11*11*quant5_10bit[i];
- s->quant_tables[1][3][i]= 5*11*11*quant5_10bit[i];
- s->quant_tables[1][4][i]= 5*5*11*11*quant5_10bit[i];
- }
- }
- memcpy(s->quant_table, s->quant_tables[avctx->context_model], sizeof(s->quant_table));
-
- for(i=0; i<s->plane_count; i++){
- PlaneContext * const p= &s->plane[i];
-
- memcpy(p->quant_table, s->quant_table, sizeof(p->quant_table));
- if(avctx->context_model==0){
- p->context_count= (11*11*11+1)/2;
- }else{
- p->context_count= (11*11*5*5*5+1)/2;
- }
- }
-
- avctx->coded_frame= &s->picture;
- switch(avctx->pix_fmt){
- case PIX_FMT_YUV444P16:
- case PIX_FMT_YUV422P16:
- case PIX_FMT_YUV420P16:
- if(avctx->bits_per_raw_sample <=8){
- av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample invalid\n");
- return -1;
- }
- if(!s->ac){
- av_log(avctx, AV_LOG_ERROR, "bits_per_raw_sample of more than 8 needs -coder 1 currently\n");
- return -1;
- }
- s->version= FFMAX(s->version, 1);
- case PIX_FMT_YUV444P:
- case PIX_FMT_YUV422P:
- case PIX_FMT_YUV420P:
- case PIX_FMT_YUV411P:
- case PIX_FMT_YUV410P:
- s->colorspace= 0;
- break;
- case PIX_FMT_RGB32:
- 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->picture_number=0;
-
- if(s->version>1){
- s->num_h_slices=2;
- s->num_v_slices=2;
- write_extra_header(s);
+ 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]));
}
-
- if(init_slice_contexts(s) < 0)
- return -1;
- if(init_slice_state(s) < 0)
- return -1;
-
return 0;
}
-#endif /* CONFIG_FFV1_ENCODER */
-
-
-static void clear_state(FFV1Context *f){
- int i, si, j;
- for(si=0; si<f->slice_count; si++){
- FFV1Context *fs= f->slice_context[si];
- 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;
+void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
+{
+ int i, j;
- for(j=0; j<p->context_count; j++){
- if(fs->ac){
- memset(p->state[j], 128, sizeof(uint8_t)*CONTEXT_SIZE);
- }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 != AC_GOLOMB_RICE) {
+ 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;
}
}
}
}
-#if CONFIG_FFV1_ENCODER
-static int encode_slice(AVCodecContext *c, void *arg){
- FFV1Context *fs= *(void**)arg;
- FFV1Context *f= fs->avctx->priv_data;
- int width = fs->slice_width;
- int height= fs->slice_height;
- int x= fs->slice_x;
- int y= fs->slice_y;
- AVFrame * const p= &f->picture;
-
- if(f->colorspace==0){
- const int chroma_width = -((-width )>>f->chroma_h_shift);
- const int chroma_height= -((-height)>>f->chroma_v_shift);
- const int cx= x>>f->chroma_h_shift;
- const int cy= y>>f->chroma_v_shift;
-
- encode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
-
- encode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
- encode_plane(fs, p->data[2] + cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
- }else{
- encode_rgb_frame(fs, (uint32_t*)(p->data[0]) + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
- }
- emms_c();
-
- return 0;
-}
-
-static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
- FFV1Context *f = avctx->priv_data;
- RangeCoder * const c= &f->slice_context[0]->c;
- AVFrame *pict = data;
- AVFrame * const p= &f->picture;
- int used_count= 0;
- uint8_t keystate=128;
- uint8_t *buf_p;
- int i;
-
- ff_init_range_encoder(c, buf, buf_size);
- ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
- *p = *pict;
- p->pict_type= FF_I_TYPE;
-
- if(avctx->gop_size==0 || f->picture_number % avctx->gop_size == 0){
- put_rac(c, &keystate, 1);
- p->key_frame= 1;
- write_header(f);
- clear_state(f);
- }else{
- put_rac(c, &keystate, 0);
- p->key_frame= 0;
- }
-
- if(!f->ac){
- used_count += ff_rac_terminate(c);
-//printf("pos=%d\n", used_count);
- init_put_bits(&f->slice_context[0]->pb, buf + used_count, buf_size - used_count);
- }else if (f->ac>1){
- int i;
- for(i=1; i<256; i++){
- c->one_state[i]= f->state_transition[i];
- c->zero_state[256-i]= 256-c->one_state[i];
- }
- }
-
- for(i=1; i<f->slice_count; i++){
- FFV1Context *fs= f->slice_context[i];
- uint8_t *start= buf + (buf_size-used_count)*i/f->slice_count;
- int len= buf_size/f->slice_count;
-
- if(fs->ac){
- ff_init_range_encoder(&fs->c, start, len);
- }else{
- init_put_bits(&fs->pb, start, len);
- }
- }
- avctx->execute(avctx, encode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
-
- buf_p=buf;
- for(i=0; i<f->slice_count; i++){
- FFV1Context *fs= f->slice_context[i];
- int bytes;
-
- if(fs->ac){
- uint8_t state=128;
- put_rac(&fs->c, &state, 0);
- bytes= ff_rac_terminate(&fs->c);
- }else{
- flush_put_bits(&fs->pb); //nicer padding FIXME
- bytes= used_count + (put_bits_count(&fs->pb)+7)/8;
- used_count= 0;
- }
- if(i>0){
- av_assert0(bytes < buf_size/f->slice_count);
- memmove(buf_p, fs->ac ? fs->c.bytestream_start : fs->pb.buf, bytes);
- av_assert0(bytes < (1<<24));
- AV_WB24(buf_p+bytes, bytes);
- bytes+=3;
- }
- buf_p += bytes;
- }
-
- f->picture_number++;
- return buf_p-buf;
-}
-#endif /* CONFIG_FFV1_ENCODER */
-
-static av_cold int common_end(AVCodecContext *avctx){
+av_cold int ffv1_close(AVCodecContext *avctx)
+{
FFV1Context *s = avctx->priv_data;
int i, j;
- 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];
+ 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];
av_freep(&p->state);
av_freep(&p->vlc_state);
av_freep(&fs->sample_buffer);
}
- return 0;
-}
-
-static av_always_inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){
- PlaneContext * const p= &s->plane[plane_index];
- RangeCoder * const c= &s->c;
- int x;
- int run_count=0;
- int run_mode=0;
- int run_index= s->run_index;
-
- for(x=0; x<w; x++){
- int diff, context, sign;
-
- context= get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
- if(context < 0){
- context= -context;
- sign=1;
- }else
- sign=0;
-
- av_assert2(context < p->context_count);
-
- if(s->ac){
- diff= get_symbol_inline(c, p->state[context], 1);
- }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<<ff_log2_run[run_index];
- if(x + run_count <= w) run_index++;
- }else{
- if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_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], bits);
- if(diff>=0) diff++;
- }else
- diff=0;
- }else
- diff= get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
-
-// 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));
+ 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]);
}
-
- if(sign) diff= -diff;
-
- sample[1][x]= (predict(sample[1] + x, sample[0] + x) + diff) & ((1<<bits)-1);
- }
- s->run_index= run_index;
-}
-
-static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
- int x, y;
- int_fast16_t *sample[2];
- sample[0]=s->sample_buffer +3;
- sample[1]=s->sample_buffer+w+6+3;
-
- s->run_index=0;
-
- memset(s->sample_buffer, 0, 2*(w+6)*sizeof(*s->sample_buffer));
-
- for(y=0; y<h; y++){
- int_fast16_t *temp= sample[0]; //FIXME try a normal buffer
-
- sample[0]= sample[1];
- sample[1]= temp;
-
- sample[1][-1]= sample[0][0 ];
- sample[0][ w]= sample[0][w-1];
-
-//{START_TIMER
- if(s->avctx->bits_per_raw_sample <= 8){
- decode_line(s, w, sample, plane_index, 8);
- for(x=0; x<w; x++){
- src[x + stride*y]= sample[1][x];
- }
- }else{
- decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
- for(x=0; x<w; x++){
- ((uint16_t*)(src + stride*y))[x]= sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
- }
- }
-//STOP_TIMER("decode-line")}
- }
-}
-
-static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
- int x, y, p;
- int_fast16_t *sample[3][2];
- for(x=0; x<3; x++){
- sample[x][0] = s->sample_buffer + x*2 *(w+6) + 3;
- sample[x][1] = s->sample_buffer + (x*2+1)*(w+6) + 3;
+ av_freep(&s->rc_stat2[j]);
}
- s->run_index=0;
-
- memset(s->sample_buffer, 0, 6*(w+6)*sizeof(*s->sample_buffer));
-
- for(y=0; y<h; y++){
- for(p=0; p<3; p++){
- int_fast16_t *temp= sample[p][0]; //FIXME try a normal buffer
-
- sample[p][0]= sample[p][1];
- sample[p][1]= temp;
-
- sample[p][1][-1]= sample[p][0][0 ];
- sample[p][0][ w]= sample[p][0][w-1];
- decode_line(s, w, sample[p], FFMIN(p, 1), 9);
- }
- for(x=0; x<w; x++){
- int g= sample[0][1][x];
- int b= sample[1][1][x];
- int r= sample[2][1][x];
-
-// assert(g>=0 && b>=0 && r>=0);
-// assert(g<256 && b<512 && r<512);
-
- b -= 0x100;
- r -= 0x100;
- g -= (b + r)>>2;
- b += g;
- r += g;
-
- src[x + stride*y]= b + (g<<8) + (r<<16) + (0xFF<<24);
- }
- }
-}
-
-static int decode_slice(AVCodecContext *c, void *arg){
- FFV1Context *fs= *(void**)arg;
- FFV1Context *f= fs->avctx->priv_data;
- int width = fs->slice_width;
- int height= fs->slice_height;
- int x= fs->slice_x;
- int y= fs->slice_y;
- AVFrame * const p= &f->picture;
-
- av_assert1(width && height);
- if(f->colorspace==0){
- const int chroma_width = -((-width )>>f->chroma_h_shift);
- const int chroma_height= -((-height)>>f->chroma_v_shift);
- const int cx= x>>f->chroma_h_shift;
- const int cy= y>>f->chroma_v_shift;
- decode_plane(fs, p->data[0] + x + y*p->linesize[0], width, height, p->linesize[0], 0);
-
- decode_plane(fs, p->data[1] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
- decode_plane(fs, p->data[2] + cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[2], 1);
- }else{
- decode_rgb_frame(fs, (uint32_t*)p->data[0] + x + y*(p->linesize[0]/4), width, height, p->linesize[0]/4);
- }
-
- emms_c();
+ for (i = 0; i < s->slice_count; i++)
+ av_freep(&s->slice_context[i]);
return 0;
}
-
-static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale){
- int v;
- int i=0;
- uint8_t state[CONTEXT_SIZE];
-
- memset(state, 128, sizeof(state));
-
- for(v=0; i<128 ; v++){
- int len= get_symbol(c, state, 0) + 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_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256]){
- int i;
- int context_count=1;
-
- for(i=0; i<5; i++){
- context_count*= read_quant_table(c, quant_table[i], context_count);
- if(context_count > 32768U){
- return -1;
- }
- }
- return (context_count+1)/2;
-}
-
-static int read_extra_header(FFV1Context *f){
- RangeCoder * const c= &f->c;
- uint8_t state[CONTEXT_SIZE];
- int i;
-
- memset(state, 128, sizeof(state));
-
- ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
- ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
- f->version= get_symbol(c, state, 0);
- f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
- if(f->ac>1){
- for(i=1; i<256; i++){
- f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
- }
- }
- f->colorspace= get_symbol(c, state, 0); //YUV cs type
- f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
- get_rac(c, state); //no chroma = false
- f->chroma_h_shift= get_symbol(c, state, 0);
- f->chroma_v_shift= get_symbol(c, state, 0);
- get_rac(c, state); //transparency plane
- f->plane_count= 2;
- f->num_h_slices= 1 + get_symbol(c, state, 0);
- f->num_v_slices= 1 + get_symbol(c, state, 0);
- if(f->num_h_slices > (unsigned)f->width || f->num_v_slices > (unsigned)f->height){
- av_log(f->avctx, AV_LOG_ERROR, "too many slices\n");
- return -1;
- }
-
- f->quant_table_count= get_symbol(c, state, 0);
- if(f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
- return -1;
- for(i=0; i<f->quant_table_count; i++){
- if((f->context_count[i]= read_quant_tables(c, f->quant_tables[i])) < 0){
- av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
- return -1;
- }
- }
-
- return 0;
-}
-
-static int read_header(FFV1Context *f){
- uint8_t state[CONTEXT_SIZE];
- int i, j, context_count;
- RangeCoder * const c= &f->slice_context[0]->c;
-
- memset(state, 128, sizeof(state));
-
- if(f->version < 2){
- f->version= get_symbol(c, state, 0);
- f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
- if(f->ac>1){
- for(i=1; i<256; i++){
- f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
- }
- }
- f->colorspace= get_symbol(c, state, 0); //YUV cs type
- if(f->version>0)
- f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
- get_rac(c, state); //no chroma = false
- f->chroma_h_shift= get_symbol(c, state, 0);
- f->chroma_v_shift= get_symbol(c, state, 0);
- get_rac(c, state); //transparency plane
- f->plane_count= 2;
- }
-
- if(f->colorspace==0){
- if(f->avctx->bits_per_raw_sample<=8){
- 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 0x22: f->avctx->pix_fmt= PIX_FMT_YUV410P; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- }else{
- switch(16*f->chroma_h_shift + f->chroma_v_shift){
- case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
- case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;
- case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P16; break;
- default:
- av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
- }
- }
- }else if(f->colorspace==1){
- if(f->chroma_h_shift || f->chroma_v_shift){
- av_log(f->avctx, AV_LOG_ERROR, "chroma subsampling not supported in this colorspace\n");
- return -1;
- }
- f->avctx->pix_fmt= PIX_FMT_RGB32;
- }else{
- av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
- return -1;
- }
-
-//printf("%d %d %d\n", f->chroma_h_shift, f->chroma_v_shift,f->avctx->pix_fmt);
- if(f->version < 2){
- context_count= read_quant_tables(c, f->quant_table);
- if(context_count < 0){
- av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
- return -1;
- }
- }else{
- f->slice_count= get_symbol(c, state, 0);
- if(f->slice_count > (unsigned)MAX_SLICES)
- return -1;
- }
-
- for(j=0; j<f->slice_count; j++){
- FFV1Context *fs= f->slice_context[j];
- fs->ac= f->ac;
-
- if(f->version >= 2){
- fs->slice_x = get_symbol(c, state, 0) *f->width ;
- fs->slice_y = get_symbol(c, state, 0) *f->height;
- fs->slice_width =(get_symbol(c, state, 0)+1)*f->width + fs->slice_x;
- fs->slice_height=(get_symbol(c, state, 0)+1)*f->height + fs->slice_y;
-
- fs->slice_x /= f->num_h_slices;
- fs->slice_y /= f->num_v_slices;
- fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
- fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
- if((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
- return -1;
- if( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
- || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
- return -1;
- }
-
- for(i=0; i<f->plane_count; i++){
- PlaneContext * const p= &fs->plane[i];
-
- if(f->version >= 2){
- int idx=get_symbol(c, state, 0);
- if(idx > (unsigned)f->quant_table_count){
- av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
- return -1;
- }
- memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
- context_count= f->context_count[idx];
- }else{
- memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
- }
-
- if(p->context_count < context_count){
- av_freep(&p->state);
- av_freep(&p->vlc_state);
- }
- p->context_count= context_count;
- }
- }
-
- return 0;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- FFV1Context *f = avctx->priv_data;
-
- common_init(avctx);
-
- if(avctx->extradata && read_extra_header(f) < 0)
- return -1;
-
- if(init_slice_contexts(f) < 0)
- return -1;
-
- return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- FFV1Context *f = avctx->priv_data;
- RangeCoder * const c= &f->slice_context[0]->c;
- AVFrame * const p= &f->picture;
- int bytes_read, i;
- uint8_t keystate= 128;
- const uint8_t *buf_p;
-
- AVFrame *picture = data;
-
- ff_init_range_decoder(c, buf, buf_size);
- ff_build_rac_states(c, 0.05*(1LL<<32), 256-8);
-
-
- p->pict_type= FF_I_TYPE; //FIXME I vs. P
- if(get_rac(c, &keystate)){
- p->key_frame= 1;
- if(read_header(f) < 0)
- return -1;
- if(init_slice_state(f) < 0)
- return -1;
-
- clear_state(f);
- }else{
- p->key_frame= 0;
- }
- if(f->ac>1){
- int i;
- for(i=1; i<256; i++){
- c->one_state[i]= f->state_transition[i];
- c->zero_state[256-i]= 256-c->one_state[i];
- }
- }
-
- p->reference= 0;
- if(avctx->get_buffer(avctx, p) < 0){
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
-
- if(avctx->debug&FF_DEBUG_PICT_INFO)
- av_log(avctx, AV_LOG_ERROR, "keyframe:%d coder:%d\n", p->key_frame, f->ac);
-
- if(!f->ac){
- bytes_read = c->bytestream - c->bytestream_start - 1;
- if(bytes_read ==0) av_log(avctx, AV_LOG_ERROR, "error at end of AC stream\n"); //FIXME
-//printf("pos=%d\n", bytes_read);
- init_get_bits(&f->slice_context[0]->gb, buf + bytes_read, buf_size - bytes_read);
- } else {
- bytes_read = 0; /* avoid warning */
- }
-
- buf_p= buf + buf_size;
- for(i=f->slice_count-1; i>0; i--){
- FFV1Context *fs= f->slice_context[i];
- int v= AV_RB24(buf_p-3)+3;
- if(buf_p - buf <= v){
- av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
- return -1;
- }
- buf_p -= v;
- if(fs->ac){
- ff_init_range_decoder(&fs->c, buf_p, v);
- }else{
- init_get_bits(&fs->gb, buf_p, v);
- }
- }
-
- avctx->execute(avctx, decode_slice, &f->slice_context[0], NULL, f->slice_count, sizeof(void*));
- f->picture_number++;
-
- *picture= *p;
-
- avctx->release_buffer(avctx, p); //FIXME
-
- *data_size = sizeof(AVFrame);
-
- return buf_size;
-}
-
-AVCodec ffv1_decoder = {
- "ffv1",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_FFV1,
- sizeof(FFV1Context),
- decode_init,
- NULL,
- common_end,
- decode_frame,
- CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
- NULL,
- .long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
-};
-
-#if CONFIG_FFV1_ENCODER
-AVCodec ffv1_encoder = {
- "ffv1",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_FFV1,
- sizeof(FFV1Context),
- encode_init,
- encode_frame,
- common_end,
- .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_NONE},
- .long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
-};
-#endif
projects / ffmpeg / blobdiff