FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* LucasArts Smush video decoder
3			* Copyright (c) 2006 Cyril Zorin
4			* Copyright (c) 2011 Konstantin Shishkov
5			*
6			* This file is part of FFmpeg.
7			*
8			* FFmpeg is free software; you can redistribute it and/or
9			* modify it under the terms of the GNU Lesser General Public
10			* License as published by the Free Software Foundation; either
11			* version 2.1 of the License, or (at your option) any later version.
12			*
13			* FFmpeg is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16			* Lesser General Public License for more details.
17			*
18			* You should have received a copy of the GNU Lesser General Public
19			* License along with FFmpeg; if not, write to the Free Software
20			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*/
22
23			#include "libavutil/avassert.h"
24			#include "libavutil/mem.h"
25
26			#include "avcodec.h"
27			#include "bytestream.h"
28			#include "copy_block.h"
29			#include "codec_internal.h"
30			#include "decode.h"
31
32			#define NGLYPHS 256
33			#define GLYPH_COORD_VECT_SIZE 16
34			#define PALETTE_SIZE 256
35			#define PALETTE_DELTA 768
36
37			static const int8_t glyph4_x[GLYPH_COORD_VECT_SIZE] = {
38			0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0, 1, 2, 2, 1
39			};
40
41			static const int8_t glyph4_y[GLYPH_COORD_VECT_SIZE] = {
42			0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 2, 2
43			};
44
45			static const int8_t glyph8_x[GLYPH_COORD_VECT_SIZE] = {
46			0, 2, 5, 7, 7, 7, 7, 7, 7, 5, 2, 0, 0, 0, 0, 0
47			};
48
49			static const int8_t glyph8_y[GLYPH_COORD_VECT_SIZE] = {
50			0, 0, 0, 0, 1, 3, 4, 6, 7, 7, 7, 7, 6, 4, 3, 1
51			};
52
53			static const int8_t motion_vectors[256][2] = {
54			{ 0, 0 }, { -1, -43 }, { 6, -43 }, { -9, -42 }, { 13, -41 },
55			{ -16, -40 }, { 19, -39 }, { -23, -36 }, { 26, -34 }, { -2, -33 },
56			{ 4, -33 }, { -29, -32 }, { -9, -32 }, { 11, -31 }, { -16, -29 },
57			{ 32, -29 }, { 18, -28 }, { -34, -26 }, { -22, -25 }, { -1, -25 },
58			{ 3, -25 }, { -7, -24 }, { 8, -24 }, { 24, -23 }, { 36, -23 },
59			{ -12, -22 }, { 13, -21 }, { -38, -20 }, { 0, -20 }, { -27, -19 },
60			{ -4, -19 }, { 4, -19 }, { -17, -18 }, { -8, -17 }, { 8, -17 },
61			{ 18, -17 }, { 28, -17 }, { 39, -17 }, { -12, -15 }, { 12, -15 },
62			{ -21, -14 }, { -1, -14 }, { 1, -14 }, { -41, -13 }, { -5, -13 },
63			{ 5, -13 }, { 21, -13 }, { -31, -12 }, { -15, -11 }, { -8, -11 },
64			{ 8, -11 }, { 15, -11 }, { -2, -10 }, { 1, -10 }, { 31, -10 },
65			{ -23, -9 }, { -11, -9 }, { -5, -9 }, { 4, -9 }, { 11, -9 },
66			{ 42, -9 }, { 6, -8 }, { 24, -8 }, { -18, -7 }, { -7, -7 },
67			{ -3, -7 }, { -1, -7 }, { 2, -7 }, { 18, -7 }, { -43, -6 },
68			{ -13, -6 }, { -4, -6 }, { 4, -6 }, { 8, -6 }, { -33, -5 },
69			{ -9, -5 }, { -2, -5 }, { 0, -5 }, { 2, -5 }, { 5, -5 },
70			{ 13, -5 }, { -25, -4 }, { -6, -4 }, { -3, -4 }, { 3, -4 },
71			{ 9, -4 }, { -19, -3 }, { -7, -3 }, { -4, -3 }, { -2, -3 },
72			{ -1, -3 }, { 0, -3 }, { 1, -3 }, { 2, -3 }, { 4, -3 },
73			{ 6, -3 }, { 33, -3 }, { -14, -2 }, { -10, -2 }, { -5, -2 },
74			{ -3, -2 }, { -2, -2 }, { -1, -2 }, { 0, -2 }, { 1, -2 },
75			{ 2, -2 }, { 3, -2 }, { 5, -2 }, { 7, -2 }, { 14, -2 },
76			{ 19, -2 }, { 25, -2 }, { 43, -2 }, { -7, -1 }, { -3, -1 },
77			{ -2, -1 }, { -1, -1 }, { 0, -1 }, { 1, -1 }, { 2, -1 },
78			{ 3, -1 }, { 10, -1 }, { -5, 0 }, { -3, 0 }, { -2, 0 },
79			{ -1, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 }, { 5, 0 },
80			{ 7, 0 }, { -10, 1 }, { -7, 1 }, { -3, 1 }, { -2, 1 },
81			{ -1, 1 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1 },
82			{ -43, 2 }, { -25, 2 }, { -19, 2 }, { -14, 2 }, { -5, 2 },
83			{ -3, 2 }, { -2, 2 }, { -1, 2 }, { 0, 2 }, { 1, 2 },
84			{ 2, 2 }, { 3, 2 }, { 5, 2 }, { 7, 2 }, { 10, 2 },
85			{ 14, 2 }, { -33, 3 }, { -6, 3 }, { -4, 3 }, { -2, 3 },
86			{ -1, 3 }, { 0, 3 }, { 1, 3 }, { 2, 3 }, { 4, 3 },
87			{ 19, 3 }, { -9, 4 }, { -3, 4 }, { 3, 4 }, { 7, 4 },
88			{ 25, 4 }, { -13, 5 }, { -5, 5 }, { -2, 5 }, { 0, 5 },
89			{ 2, 5 }, { 5, 5 }, { 9, 5 }, { 33, 5 }, { -8, 6 },
90			{ -4, 6 }, { 4, 6 }, { 13, 6 }, { 43, 6 }, { -18, 7 },
91			{ -2, 7 }, { 0, 7 }, { 2, 7 }, { 7, 7 }, { 18, 7 },
92			{ -24, 8 }, { -6, 8 }, { -42, 9 }, { -11, 9 }, { -4, 9 },
93			{ 5, 9 }, { 11, 9 }, { 23, 9 }, { -31, 10 }, { -1, 10 },
94			{ 2, 10 }, { -15, 11 }, { -8, 11 }, { 8, 11 }, { 15, 11 },
95			{ 31, 12 }, { -21, 13 }, { -5, 13 }, { 5, 13 }, { 41, 13 },
96			{ -1, 14 }, { 1, 14 }, { 21, 14 }, { -12, 15 }, { 12, 15 },
97			{ -39, 17 }, { -28, 17 }, { -18, 17 }, { -8, 17 }, { 8, 17 },
98			{ 17, 18 }, { -4, 19 }, { 0, 19 }, { 4, 19 }, { 27, 19 },
99			{ 38, 20 }, { -13, 21 }, { 12, 22 }, { -36, 23 }, { -24, 23 },
100			{ -8, 24 }, { 7, 24 }, { -3, 25 }, { 1, 25 }, { 22, 25 },
101			{ 34, 26 }, { -18, 28 }, { -32, 29 }, { 16, 29 }, { -11, 31 },
102			{ 9, 32 }, { 29, 32 }, { -4, 33 }, { 2, 33 }, { -26, 34 },
103			{ 23, 36 }, { -19, 39 }, { 16, 40 }, { -13, 41 }, { 9, 42 },
104			{ -6, 43 }, { 1, 43 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
105			};
106
107			static const int8_t c37_mv[] = {
108			0, 0, 1, 0, 2, 0, 3, 0, 5, 0,
109			8, 0, 13, 0, 21, 0, -1, 0, -2, 0,
110			-3, 0, -5, 0, -8, 0, -13, 0, -17, 0,
111			-21, 0, 0, 1, 1, 1, 2, 1, 3, 1,
112			5, 1, 8, 1, 13, 1, 21, 1, -1, 1,
113			-2, 1, -3, 1, -5, 1, -8, 1, -13, 1,
114			-17, 1, -21, 1, 0, 2, 1, 2, 2, 2,
115			3, 2, 5, 2, 8, 2, 13, 2, 21, 2,
116			-1, 2, -2, 2, -3, 2, -5, 2, -8, 2,
117			-13, 2, -17, 2, -21, 2, 0, 3, 1, 3,
118			2, 3, 3, 3, 5, 3, 8, 3, 13, 3,
119			21, 3, -1, 3, -2, 3, -3, 3, -5, 3,
120			-8, 3, -13, 3, -17, 3, -21, 3, 0, 5,
121			1, 5, 2, 5, 3, 5, 5, 5, 8, 5,
122			13, 5, 21, 5, -1, 5, -2, 5, -3, 5,
123			-5, 5, -8, 5, -13, 5, -17, 5, -21, 5,
124			0, 8, 1, 8, 2, 8, 3, 8, 5, 8,
125			8, 8, 13, 8, 21, 8, -1, 8, -2, 8,
126			-3, 8, -5, 8, -8, 8, -13, 8, -17, 8,
127			-21, 8, 0, 13, 1, 13, 2, 13, 3, 13,
128			5, 13, 8, 13, 13, 13, 21, 13, -1, 13,
129			-2, 13, -3, 13, -5, 13, -8, 13, -13, 13,
130			-17, 13, -21, 13, 0, 21, 1, 21, 2, 21,
131			3, 21, 5, 21, 8, 21, 13, 21, 21, 21,
132			-1, 21, -2, 21, -3, 21, -5, 21, -8, 21,
133			-13, 21, -17, 21, -21, 21, 0, -1, 1, -1,
134			2, -1, 3, -1, 5, -1, 8, -1, 13, -1,
135			21, -1, -1, -1, -2, -1, -3, -1, -5, -1,
136			-8, -1, -13, -1, -17, -1, -21, -1, 0, -2,
137			1, -2, 2, -2, 3, -2, 5, -2, 8, -2,
138			13, -2, 21, -2, -1, -2, -2, -2, -3, -2,
139			-5, -2, -8, -2, -13, -2, -17, -2, -21, -2,
140			0, -3, 1, -3, 2, -3, 3, -3, 5, -3,
141			8, -3, 13, -3, 21, -3, -1, -3, -2, -3,
142			-3, -3, -5, -3, -8, -3, -13, -3, -17, -3,
143			-21, -3, 0, -5, 1, -5, 2, -5, 3, -5,
144			5, -5, 8, -5, 13, -5, 21, -5, -1, -5,
145			-2, -5, -3, -5, -5, -5, -8, -5, -13, -5,
146			-17, -5, -21, -5, 0, -8, 1, -8, 2, -8,
147			3, -8, 5, -8, 8, -8, 13, -8, 21, -8,
148			-1, -8, -2, -8, -3, -8, -5, -8, -8, -8,
149			-13, -8, -17, -8, -21, -8, 0, -13, 1, -13,
150			2, -13, 3, -13, 5, -13, 8, -13, 13, -13,
151			21, -13, -1, -13, -2, -13, -3, -13, -5, -13,
152			-8, -13, -13, -13, -17, -13, -21, -13, 0, -17,
153			1, -17, 2, -17, 3, -17, 5, -17, 8, -17,
154			13, -17, 21, -17, -1, -17, -2, -17, -3, -17,
155			-5, -17, -8, -17, -13, -17, -17, -17, -21, -17,
156			0, -21, 1, -21, 2, -21, 3, -21, 5, -21,
157			8, -21, 13, -21, 21, -21, -1, -21, -2, -21,
158			-3, -21, -5, -21, -8, -21, -13, -21, -17, -21,
159			0, 0, -8, -29, 8, -29, -18, -25, 17, -25,
160			0, -23, -6, -22, 6, -22, -13, -19, 12, -19,
161			0, -18, 25, -18, -25, -17, -5, -17, 5, -17,
162			-10, -15, 10, -15, 0, -14, -4, -13, 4, -13,
163			19, -13, -19, -12, -8, -11, -2, -11, 0, -11,
164			2, -11, 8, -11, -15, -10, -4, -10, 4, -10,
165			15, -10, -6, -9, -1, -9, 1, -9, 6, -9,
166			-29, -8, -11, -8, -8, -8, -3, -8, 3, -8,
167			8, -8, 11, -8, 29, -8, -5, -7, -2, -7,
168			0, -7, 2, -7, 5, -7, -22, -6, -9, -6,
169			-6, -6, -3, -6, -1, -6, 1, -6, 3, -6,
170			6, -6, 9, -6, 22, -6, -17, -5, -7, -5,
171			-4, -5, -2, -5, 0, -5, 2, -5, 4, -5,
172			7, -5, 17, -5, -13, -4, -10, -4, -5, -4,
173			-3, -4, -1, -4, 0, -4, 1, -4, 3, -4,
174			5, -4, 10, -4, 13, -4, -8, -3, -6, -3,
175			-4, -3, -3, -3, -2, -3, -1, -3, 0, -3,
176			1, -3, 2, -3, 4, -3, 6, -3, 8, -3,
177			-11, -2, -7, -2, -5, -2, -3, -2, -2, -2,
178			-1, -2, 0, -2, 1, -2, 2, -2, 3, -2,
179			5, -2, 7, -2, 11, -2, -9, -1, -6, -1,
180			-4, -1, -3, -1, -2, -1, -1, -1, 0, -1,
181			1, -1, 2, -1, 3, -1, 4, -1, 6, -1,
182			9, -1, -31, 0, -23, 0, -18, 0, -14, 0,
183			-11, 0, -7, 0, -5, 0, -4, 0, -3, 0,
184			-2, 0, -1, 0, 0, -31, 1, 0, 2, 0,
185			3, 0, 4, 0, 5, 0, 7, 0, 11, 0,
186			14, 0, 18, 0, 23, 0, 31, 0, -9, 1,
187			-6, 1, -4, 1, -3, 1, -2, 1, -1, 1,
188			0, 1, 1, 1, 2, 1, 3, 1, 4, 1,
189			6, 1, 9, 1, -11, 2, -7, 2, -5, 2,
190			-3, 2, -2, 2, -1, 2, 0, 2, 1, 2,
191			2, 2, 3, 2, 5, 2, 7, 2, 11, 2,
192			-8, 3, -6, 3, -4, 3, -2, 3, -1, 3,
193			0, 3, 1, 3, 2, 3, 3, 3, 4, 3,
194			6, 3, 8, 3, -13, 4, -10, 4, -5, 4,
195			-3, 4, -1, 4, 0, 4, 1, 4, 3, 4,
196			5, 4, 10, 4, 13, 4, -17, 5, -7, 5,
197			-4, 5, -2, 5, 0, 5, 2, 5, 4, 5,
198			7, 5, 17, 5, -22, 6, -9, 6, -6, 6,
199			-3, 6, -1, 6, 1, 6, 3, 6, 6, 6,
200			9, 6, 22, 6, -5, 7, -2, 7, 0, 7,
201			2, 7, 5, 7, -29, 8, -11, 8, -8, 8,
202			-3, 8, 3, 8, 8, 8, 11, 8, 29, 8,
203			-6, 9, -1, 9, 1, 9, 6, 9, -15, 10,
204			-4, 10, 4, 10, 15, 10, -8, 11, -2, 11,
205			0, 11, 2, 11, 8, 11, 19, 12, -19, 13,
206			-4, 13, 4, 13, 0, 14, -10, 15, 10, 15,
207			-5, 17, 5, 17, 25, 17, -25, 18, 0, 18,
208			-12, 19, 13, 19, -6, 22, 6, 22, 0, 23,
209			-17, 25, 18, 25, -8, 29, 8, 29, 0, 31,
210			0, 0, -6, -22, 6, -22, -13, -19, 12, -19,
211			0, -18, -5, -17, 5, -17, -10, -15, 10, -15,
212			0, -14, -4, -13, 4, -13, 19, -13, -19, -12,
213			-8, -11, -2, -11, 0, -11, 2, -11, 8, -11,
214			-15, -10, -4, -10, 4, -10, 15, -10, -6, -9,
215			-1, -9, 1, -9, 6, -9, -11, -8, -8, -8,
216			-3, -8, 0, -8, 3, -8, 8, -8, 11, -8,
217			-5, -7, -2, -7, 0, -7, 2, -7, 5, -7,
218			-22, -6, -9, -6, -6, -6, -3, -6, -1, -6,
219			1, -6, 3, -6, 6, -6, 9, -6, 22, -6,
220			-17, -5, -7, -5, -4, -5, -2, -5, -1, -5,
221			0, -5, 1, -5, 2, -5, 4, -5, 7, -5,
222			17, -5, -13, -4, -10, -4, -5, -4, -3, -4,
223			-2, -4, -1, -4, 0, -4, 1, -4, 2, -4,
224			3, -4, 5, -4, 10, -4, 13, -4, -8, -3,
225			-6, -3, -4, -3, -3, -3, -2, -3, -1, -3,
226			0, -3, 1, -3, 2, -3, 3, -3, 4, -3,
227			6, -3, 8, -3, -11, -2, -7, -2, -5, -2,
228			-4, -2, -3, -2, -2, -2, -1, -2, 0, -2,
229			1, -2, 2, -2, 3, -2, 4, -2, 5, -2,
230			7, -2, 11, -2, -9, -1, -6, -1, -5, -1,
231			-4, -1, -3, -1, -2, -1, -1, -1, 0, -1,
232			1, -1, 2, -1, 3, -1, 4, -1, 5, -1,
233			6, -1, 9, -1, -23, 0, -18, 0, -14, 0,
234			-11, 0, -7, 0, -5, 0, -4, 0, -3, 0,
235			-2, 0, -1, 0, 0, -23, 1, 0, 2, 0,
236			3, 0, 4, 0, 5, 0, 7, 0, 11, 0,
237			14, 0, 18, 0, 23, 0, -9, 1, -6, 1,
238			-5, 1, -4, 1, -3, 1, -2, 1, -1, 1,
239			0, 1, 1, 1, 2, 1, 3, 1, 4, 1,
240			5, 1, 6, 1, 9, 1, -11, 2, -7, 2,
241			-5, 2, -4, 2, -3, 2, -2, 2, -1, 2,
242			0, 2, 1, 2, 2, 2, 3, 2, 4, 2,
243			5, 2, 7, 2, 11, 2, -8, 3, -6, 3,
244			-4, 3, -3, 3, -2, 3, -1, 3, 0, 3,
245			1, 3, 2, 3, 3, 3, 4, 3, 6, 3,
246			8, 3, -13, 4, -10, 4, -5, 4, -3, 4,
247			-2, 4, -1, 4, 0, 4, 1, 4, 2, 4,
248			3, 4, 5, 4, 10, 4, 13, 4, -17, 5,
249			-7, 5, -4, 5, -2, 5, -1, 5, 0, 5,
250			1, 5, 2, 5, 4, 5, 7, 5, 17, 5,
251			-22, 6, -9, 6, -6, 6, -3, 6, -1, 6,
252			1, 6, 3, 6, 6, 6, 9, 6, 22, 6,
253			-5, 7, -2, 7, 0, 7, 2, 7, 5, 7,
254			-11, 8, -8, 8, -3, 8, 0, 8, 3, 8,
255			8, 8, 11, 8, -6, 9, -1, 9, 1, 9,
256			6, 9, -15, 10, -4, 10, 4, 10, 15, 10,
257			-8, 11, -2, 11, 0, 11, 2, 11, 8, 11,
258			19, 12, -19, 13, -4, 13, 4, 13, 0, 14,
259			-10, 15, 10, 15, -5, 17, 5, 17, 0, 18,
260			-12, 19, 13, 19, -6, 22, 6, 22, 0, 23,
261			};
262
263			typedef struct SANMVideoContext {
264			AVCodecContext *avctx;
265			GetByteContext gb;
266
267			int version, subversion, have_dimensions, first_fob;
268			uint32_t pal[PALETTE_SIZE];
269			int16_t delta_pal[PALETTE_DELTA];
270
271			ptrdiff_t pitch;
272			int width, height;
273			int aligned_width, aligned_height;
274			int prev_seq;
275
276			AVFrame *frame;
277			uint16_t *frm0, *frm1, *frm2;
278			uint8_t *stored_frame;
279			uint32_t frm0_size, frm1_size, frm2_size;
280			uint32_t stored_frame_size;
281
282			uint8_t *rle_buf;
283			unsigned int rle_buf_size;
284
285			int rotate_code;
286
287			long npixels, buf_size;
288
289			uint16_t codebook[256];
290			uint16_t small_codebook[4];
291
292			int8_t p4x4glyphs[NGLYPHS][16];
293			int8_t p8x8glyphs[NGLYPHS][64];
294			uint8_t c47itbl[0x10000];
295			uint8_t c23lut[256];
296			uint8_t c4tbl[2][256][16];
297			uint16_t c4param;
298			} SANMVideoContext;
299
300			typedef struct SANMFrameHeader {
301			int seq_num, codec, rotate_code, rle_output_size;
302
303			uint16_t bg_color;
304			uint32_t width, height;
305			} SANMFrameHeader;
306
307			enum GlyphEdge {
308			LEFT_EDGE,
309			TOP_EDGE,
310			RIGHT_EDGE,
311			BOTTOM_EDGE,
312			NO_EDGE
313			};
314
315			enum GlyphDir {
316			DIR_LEFT,
317			DIR_UP,
318			DIR_RIGHT,
319			DIR_DOWN,
320			NO_DIR
321			};
322
323			/**
324			* Return enum GlyphEdge of box where point (x, y) lies.
325			*
326			* @param x x point coordinate
327			* @param y y point coordinate
328			* @param edge_size box width/height.
329			*/
330		1632	static enum GlyphEdge which_edge(int x, int y, int edge_size)
331			{
332		1632	const int edge_max = edge_size - 1;
333
334	2/2 ✓ Branch 0 taken 408 times. ✓ Branch 1 taken 1224 times.	1632	if (!y)
335		408	return BOTTOM_EDGE;
336	2/2 ✓ Branch 0 taken 408 times. ✓ Branch 1 taken 816 times.	1224	else if (y == edge_max)
337		408	return TOP_EDGE;
338	2/2 ✓ Branch 0 taken 306 times. ✓ Branch 1 taken 510 times.	816	else if (!x)
339		306	return LEFT_EDGE;
340	2/2 ✓ Branch 0 taken 306 times. ✓ Branch 1 taken 204 times.	510	else if (x == edge_max)
341		306	return RIGHT_EDGE;
342			else
343		204	return NO_EDGE;
344			}
345
346		1536	static enum GlyphDir which_direction(enum GlyphEdge edge0, enum GlyphEdge edge1)
347			{
348	6/6 ✓ Branch 0 taken 288 times. ✓ Branch 1 taken 1248 times. ✓ Branch 2 taken 228 times. ✓ Branch 3 taken 60 times. ✓ Branch 4 taken 288 times. ✓ Branch 5 taken 1188 times.	1536	if ((edge0 == LEFT_EDGE && edge1 == RIGHT_EDGE) ||
349	4/4 ✓ Branch 0 taken 228 times. ✓ Branch 1 taken 60 times. ✓ Branch 2 taken 384 times. ✓ Branch 3 taken 1032 times.	1476	(edge1 == LEFT_EDGE && edge0 == RIGHT_EDGE) ||
350	4/4 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 288 times. ✓ Branch 2 taken 288 times. ✓ Branch 3 taken 840 times.	1416	(edge0 == BOTTOM_EDGE && edge1 != TOP_EDGE) ||
351	2/2 ✓ Branch 0 taken 192 times. ✓ Branch 1 taken 96 times.	288	(edge1 == BOTTOM_EDGE && edge0 != TOP_EDGE))
352		600	return DIR_UP;
353	6/6 ✓ Branch 0 taken 384 times. ✓ Branch 1 taken 552 times. ✓ Branch 2 taken 96 times. ✓ Branch 3 taken 288 times. ✓ Branch 4 taken 288 times. ✓ Branch 5 taken 360 times.	936	else if ((edge0 == TOP_EDGE && edge1 != BOTTOM_EDGE) ||
354	2/2 ✓ Branch 0 taken 192 times. ✓ Branch 1 taken 96 times.	288	(edge1 == TOP_EDGE && edge0 != BOTTOM_EDGE))
355		480	return DIR_DOWN;
356	5/6 ✓ Branch 0 taken 84 times. ✓ Branch 1 taken 372 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 84 times. ✓ Branch 4 taken 24 times. ✓ Branch 5 taken 348 times.	456	else if ((edge0 == LEFT_EDGE && edge1 != RIGHT_EDGE) ||
357	1/2 ✓ Branch 0 taken 24 times. ✗ Branch 1 not taken.	24	(edge1 == LEFT_EDGE && edge0 != RIGHT_EDGE))
358		108	return DIR_LEFT;
359	5/6 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 252 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 96 times. ✓ Branch 4 taken 96 times. ✓ Branch 5 taken 156 times.	348	else if ((edge0 == TOP_EDGE && edge1 == BOTTOM_EDGE) ||
360	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 96 times. ✓ Branch 2 taken 84 times. ✓ Branch 3 taken 72 times.	252	(edge1 == TOP_EDGE && edge0 == BOTTOM_EDGE) ||
361	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times. ✓ Branch 2 taken 24 times. ✓ Branch 3 taken 48 times.	156	(edge0 == RIGHT_EDGE && edge1 != LEFT_EDGE) ||
362	1/2 ✓ Branch 0 taken 24 times. ✗ Branch 1 not taken.	24	(edge1 == RIGHT_EDGE && edge0 != LEFT_EDGE))
363		300	return DIR_RIGHT;
364
365		48	return NO_DIR;
366			}
367
368			/* Interpolate two points. */
369		6600	static void interp_point(int8_t *points, int x0, int y0, int x1, int y1,
370			int pos, int npoints)
371			{
372	2/2 ✓ Branch 0 taken 6504 times. ✓ Branch 1 taken 96 times.	6600	if (npoints) {
373		6504	points[0] = (x0 * pos + x1 * (npoints - pos) + (npoints >> 1)) / npoints;
374		6504	points[1] = (y0 * pos + y1 * (npoints - pos) + (npoints >> 1)) / npoints;
375			} else {
376		96	points[0] = x0;
377		96	points[1] = y0;
378			}
379		6600	}
380
381			/**
382			* Construct glyphs by iterating through vector coordinates.
383			*
384			* @param pglyphs pointer to table where glyphs are stored
385			* @param xvec pointer to x component of vector coordinates
386			* @param yvec pointer to y component of vector coordinates
387			* @param side_length glyph width/height.
388			*/
389		6	static void make_glyphs(int8_t *pglyphs, const int8_t *xvec, const int8_t *yvec,
390			const int side_length)
391			{
392		6	const int glyph_size = side_length * side_length;
393		6	int8_t *pglyph = pglyphs;
394
395			int i, j;
396	2/2 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 6 times.	102	for (i = 0; i < GLYPH_COORD_VECT_SIZE; i++) {
397		96	int x0 = xvec[i];
398		96	int y0 = yvec[i];
399		96	enum GlyphEdge edge0 = which_edge(x0, y0, side_length);
400
401	2/2 ✓ Branch 0 taken 1536 times. ✓ Branch 1 taken 96 times.	1632	for (j = 0; j < GLYPH_COORD_VECT_SIZE; j++, pglyph += glyph_size) {
402		1536	int x1 = xvec[j];
403		1536	int y1 = yvec[j];
404		1536	enum GlyphEdge edge1 = which_edge(x1, y1, side_length);
405		1536	enum GlyphDir dir = which_direction(edge0, edge1);
406		1536	int npoints = FFMAX(FFABS(x1 - x0), FFABS(y1 - y0));
407			int ipoint;
408
409	2/2 ✓ Branch 0 taken 6600 times. ✓ Branch 1 taken 1536 times.	8136	for (ipoint = 0; ipoint <= npoints; ipoint++) {
410			int8_t point[2];
411			int irow, icol;
412
413		6600	interp_point(point, x0, y0, x1, y1, ipoint, npoints);
414
415	5/5 ✓ Branch 0 taken 2832 times. ✓ Branch 1 taken 1968 times. ✓ Branch 2 taken 282 times. ✓ Branch 3 taken 1434 times. ✓ Branch 4 taken 84 times.	6600	switch (dir) {
416		2832	case DIR_UP:
417	2/2 ✓ Branch 0 taken 8232 times. ✓ Branch 1 taken 2832 times.	11064	for (irow = point[1]; irow >= 0; irow--)
418		8232	pglyph[point[0] + irow * side_length] = 1;
419		2832	break;
420
421		1968	case DIR_DOWN:
422	2/2 ✓ Branch 0 taken 4500 times. ✓ Branch 1 taken 1968 times.	6468	for (irow = point[1]; irow < side_length; irow++)
423		4500	pglyph[point[0] + irow * side_length] = 1;
424		1968	break;
425
426		282	case DIR_LEFT:
427	2/2 ✓ Branch 0 taken 378 times. ✓ Branch 1 taken 282 times.	660	for (icol = point[0]; icol >= 0; icol--)
428		378	pglyph[icol + point[1] * side_length] = 1;
429		282	break;
430
431		1434	case DIR_RIGHT:
432	2/2 ✓ Branch 0 taken 4794 times. ✓ Branch 1 taken 1434 times.	6228	for (icol = point[0]; icol < side_length; icol++)
433		4794	pglyph[icol + point[1] * side_length] = 1;
434		1434	break;
435			}
436			}
437			}
438			}
439		6	}
440
441		6	static void init_sizes(SANMVideoContext *ctx, int width, int height)
442			{
443		6	ctx->width = width;
444		6	ctx->height = height;
445		6	ctx->npixels = width * height;
446
447		6	ctx->aligned_width = FFALIGN(width, 8);
448		6	ctx->aligned_height = FFALIGN(height, 8);
449
450		6	ctx->buf_size = ctx->aligned_width * ctx->aligned_height * sizeof(ctx->frm0[0]);
451		6	ctx->pitch = width;
452		6	}
453
454		3	static void destroy_buffers(SANMVideoContext *ctx)
455			{
456		3	av_freep(&ctx->frm0);
457		3	av_freep(&ctx->frm1);
458		3	av_freep(&ctx->frm2);
459		3	av_freep(&ctx->stored_frame);
460		3	av_freep(&ctx->rle_buf);
461		3	ctx->frm0_size =
462		3	ctx->frm1_size =
463		3	ctx->frm2_size = 0;
464		3	init_sizes(ctx, 0, 0);
465		3	}
466
467		3	static av_cold int init_buffers(SANMVideoContext *ctx)
468			{
469		3	av_fast_padded_mallocz(&ctx->frm0, &ctx->frm0_size, ctx->buf_size);
470		3	av_fast_padded_mallocz(&ctx->frm1, &ctx->frm1_size, ctx->buf_size);
471		3	av_fast_padded_mallocz(&ctx->frm2, &ctx->frm2_size, ctx->buf_size);
472	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	if (!ctx->version)
473		✗	av_fast_padded_mallocz(&ctx->stored_frame,
474		✗	&ctx->stored_frame_size, ctx->buf_size);
475
476	3/6 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 3 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 3 times. ✗ Branch 5 not taken.	3	if (!ctx->frm0 || !ctx->frm1 || !ctx->frm2 ||
477	2/4 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 3 times.	3	(!ctx->stored_frame && !ctx->version)) {
478		✗	destroy_buffers(ctx);
479		✗	return AVERROR(ENOMEM);
480			}
481
482		3	return 0;
483			}
484
485		✗	static void codec33_gen_tiles(SANMVideoContext *ctx, int8_t param1)
486			{
487		✗	uint8_t *dst = &(ctx->c4tbl[0][0][0]);
488			int i, j, k, l, m, n, o, p;
489
490		✗	for (i = 0; i < 8; i++) {
491		✗	for (k = 0; k < 8; k++) {
492		✗	j = i + param1;
493		✗	l = k + param1;
494		✗	p = (j + k) / 2;
495		✗	j = (j + p) / 2;
496		✗	m = l / 2;
497		✗	n = (i + param1);
498		✗	o = (k + param1);
499
500		✗	*dst++ = p; *dst++ = p; *dst++ = j; *dst++ = n;
501		✗	*dst++ = p; *dst++ = p; *dst++ = j; *dst++ = i;
502		✗	*dst++ = m; *dst++ = m; *dst++ = p; *dst++ = j;
503		✗	*dst++ = l; *dst++ = l; *dst++ = m; *dst++ = p;
504			}
505			}
506
507		✗	for (i = 0; i < 8; i++) {
508		✗	for (k = 0; k < 8; k++) {
509		✗	j = i + param1;
510		✗	l = k + param1;
511		✗	n = ((j + l) / 2);
512		✗	m = ((l + n) / 2);
513
514		✗	*dst++ = j; *dst++ = j; *dst++ = j; *dst++ = j;
515		✗	*dst++ = n; *dst++ = n; *dst++ = n; *dst++ = n;
516		✗	*dst++ = m; *dst++ = m; *dst++ = m; *dst++ = m;
517		✗	*dst++ = l; *dst++ = l; *dst++ = l; *dst++ = l;
518			}
519			}
520
521		✗	for (i = 0; i < 8; i++) {
522		✗	for (k = 0; k < 8; k++) {
523		✗	j = i + param1;
524		✗	l = k + param1;
525		✗	m = (j + l) / 2;
526		✗	n = (j + m) / 2;
527		✗	o = m / 2;
528		✗	p = j & 0xff;
529
530		✗	*dst++ = p; *dst++ = p; *dst++ = n; *dst++ = m;
531		✗	*dst++ = p; *dst++ = p; *dst++ = n; *dst++ = m;
532		✗	*dst++ = n; *dst++ = n; *dst++ = m; *dst++ = o;
533		✗	*dst++ = m; *dst++ = m; *dst++ = o; *dst++ = l;
534			}
535			}
536
537		✗	for (i = 0; i < 8; i++) {
538		✗	for (k = 0; k < 8; k++) {
539		✗	j = i + param1;
540		✗	l = k + param1;
541		✗	m = (j + l) / 2;
542		✗	n = m / 2;
543
544		✗	*dst++ = j; *dst++ = m; *dst++ = n; *dst++ = l;
545		✗	*dst++ = j; *dst++ = m; *dst++ = n; *dst++ = l;
546		✗	*dst++ = j; *dst++ = m; *dst++ = n; *dst++ = l;
547		✗	*dst++ = j; *dst++ = m; *dst++ = n; *dst++ = l;
548			}
549			}
550		✗	}
551
552		✗	static void codec4_gen_tiles(SANMVideoContext *ctx, uint16_t param1)
553			{
554		✗	uint8_t *dst = &(ctx->c4tbl[0][0][0]);
555			int i, j, k, l, m, n, o;
556
557		✗	for (i = 1; i < 16; i += 2) {
558		✗	for (k = 0; k < 16; k++) {
559		✗	j = i + param1;
560		✗	l = k + param1;
561		✗	m = (j + l) / 2;
562		✗	n = (j + m) / 2;
563		✗	o = (l + m) / 2;
564		✗	if (j == m || l == m) {
565		✗	*dst++ = l; *dst++ = j; *dst++ = l; *dst++ = j;
566		✗	*dst++ = j; *dst++ = l; *dst++ = j; *dst++ = j;
567		✗	*dst++ = l; *dst++ = j; *dst++ = l; *dst++ = j;
568		✗	*dst++ = l; *dst++ = l; *dst++ = j; *dst++ = l;
569			} else {
570		✗	*dst++ = m; *dst++ = m; *dst++ = n; *dst++ = j;
571		✗	*dst++ = m; *dst++ = m; *dst++ = n; *dst++ = j;
572		✗	*dst++ = o; *dst++ = o; *dst++ = m; *dst++ = n;
573		✗	*dst++ = l; *dst++ = l; *dst++ = o; *dst++ = m;
574			}
575			}
576			}
577
578		✗	for (i = 0; i < 16; i += 2) {
579		✗	for (k = 0; k < 16; k++) {
580		✗	j = i + param1;
581		✗	l = k + param1;
582		✗	m = (j + l) / 2;
583		✗	n = (j + m) / 2;
584		✗	o = (l + m) / 2;
585		✗	if (m == j || m == l) {
586		✗	*dst++ = j; *dst++ = j; *dst++ = l; *dst++ = j;
587		✗	*dst++ = j; *dst++ = j; *dst++ = j; *dst++ = l;
588		✗	*dst++ = l; *dst++ = j; *dst++ = l; *dst++ = l;
589		✗	*dst++ = j; *dst++ = l; *dst++ = j; *dst++ = l;
590			} else {
591		✗	*dst++ = j; *dst++ = j; *dst++ = n; *dst++ = m;
592		✗	*dst++ = j; *dst++ = j; *dst++ = n; *dst++ = m;
593		✗	*dst++ = n; *dst++ = n; *dst++ = m; *dst++ = o;
594		✗	*dst++ = m; *dst++ = m; *dst++ = o; *dst++ = l;
595			}
596			}
597			}
598		✗	}
599
600
601		✗	static int codec4_load_tiles(SANMVideoContext *ctx, GetByteContext *gb,
602			uint16_t param2, uint8_t clr)
603			{
604		✗	uint8_t c, *dst = (uint8_t *)&(ctx->c4tbl[1][0][0]);
605		✗	uint32_t loop = param2 * 8;
606
607		✗	if ((param2 > 256) || (bytestream2_get_bytes_left(gb) < loop))
608		✗	return AVERROR_INVALIDDATA;
609
610		✗	while (loop--) {
611		✗	c = bytestream2_get_byteu(gb);
612		✗	*dst++ = (c >> 4) + clr;
613		✗	*dst++ = (c & 0xf) + clr;
614			}
615
616		✗	return 0;
617			}
618
619		9	static void rotate_bufs(SANMVideoContext *ctx, int rotate_code)
620			{
621	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 8 times.	9	if (rotate_code == 2)
622		1	FFSWAP(uint16_t*, ctx->frm1, ctx->frm2);
623		9	FFSWAP(uint16_t*, ctx->frm2, ctx->frm0);
624		9	}
625
626		3	static av_cold int decode_init(AVCodecContext *avctx)
627			{
628		3	SANMVideoContext *ctx = avctx->priv_data;
629
630		3	ctx->avctx = avctx;
631		3	ctx->version = !avctx->extradata_size;
632			// early sanity check before allocations to avoid need for deallocation code.
633	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	3	if (!ctx->version && avctx->extradata_size < 1026) {
634		✗	av_log(avctx, AV_LOG_ERROR, "Not enough extradata.\n");
635		✗	return AVERROR_INVALIDDATA;
636			}
637
638	1/2 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken.	3	avctx->pix_fmt = ctx->version ? AV_PIX_FMT_RGB565 : AV_PIX_FMT_PAL8;
639
640		3	init_sizes(ctx, avctx->width, avctx->height);
641	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3 times.	3	if (init_buffers(ctx)) {
642		✗	av_log(avctx, AV_LOG_ERROR, "Error allocating buffers.\n");
643		✗	return AVERROR(ENOMEM);
644			}
645
646		3	make_glyphs(ctx->p4x4glyphs[0], glyph4_x, glyph4_y, 4);
647		3	make_glyphs(ctx->p8x8glyphs[0], glyph8_x, glyph8_y, 8);
648
649	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	if (!ctx->version) {
650			int i;
651
652		✗	ctx->subversion = AV_RL16(avctx->extradata);
653		✗	for (i = 0; i < PALETTE_SIZE; i++)
654		✗	ctx->pal[i] = 0xFFU << 24 | AV_RL32(avctx->extradata + 2 + i * 4);
655		✗	if (ctx->subversion < 2)
656		✗	ctx->pal[0] = 0xFFU << 24;
657			}
658		3	ctx->c4param = 0xffff;
659
660		3	return 0;
661			}
662
663		3	static av_cold int decode_end(AVCodecContext *avctx)
664			{
665		3	SANMVideoContext *ctx = avctx->priv_data;
666
667		3	destroy_buffers(ctx);
668
669		3	return 0;
670			}
671
672		✗	static int old_codec4(SANMVideoContext *ctx, GetByteContext *gb, int top, int left,
673			int w, int h, uint8_t param, uint16_t param2, int codec)
674			{
675		✗	const uint16_t p = ctx->pitch;
676		✗	const uint32_t maxpxo = ctx->height * p;
677		✗	uint8_t mask, bits, idx, *gs, *dst = (uint8_t *)ctx->frm0;
678			int i, j, k, l, bit, ret;
679			int32_t pxoff, pxo2;
680
681		✗	if (ctx->c4param != param) {
682		✗	if (codec > 32)
683		✗	codec33_gen_tiles(ctx, param);
684			else
685		✗	codec4_gen_tiles(ctx, param);
686		✗	ctx->c4param = param;
687			}
688		✗	if (param2 > 0) {
689		✗	ret = codec4_load_tiles(ctx, gb, param2, param);
690		✗	if (ret)
691		✗	return ret;
692			}
693
694		✗	if (codec > 32)
695		✗	codec -= 29;
696
697		✗	for (j = 0; j < w; j += 4) {
698		✗	mask = bits = 0;
699		✗	for (i = 0; i < h; i += 4) {
700		✗	pxoff = j + left + ((top + i) * p);
701		✗	if (param2 > 0) {
702		✗	if (bits == 0) {
703		✗	if (bytestream2_get_bytes_left(gb) < 1)
704		✗	return AVERROR_INVALIDDATA;
705		✗	mask = bytestream2_get_byteu(gb);
706		✗	bits = 8;
707			}
708		✗	bit = !!(mask & 0x80);
709		✗	mask <<= 1;
710		✗	bits--;
711			} else {
712		✗	bit = 0;
713			}
714
715		✗	if (bytestream2_get_bytes_left(gb) < 1)
716		✗	return AVERROR_INVALIDDATA;
717		✗	idx = bytestream2_get_byteu(gb);
718		✗	if ((bit == 0) && (idx == 0x80) && (codec != 5))
719		✗	continue;
720
721		✗	gs = &(ctx->c4tbl[bit][idx][0]);
722		✗	pxo2 = pxoff;
723		✗	for (k = 0; k < 4; k++) {
724		✗	for (l = 0; l < 4; l++) {
725		✗	if (pxo2 >= 0 && pxo2 < maxpxo) {
726		✗	*(dst + pxo2) = *gs;
727			}
728		✗	gs++;
729		✗	pxo2++;
730			}
731		✗	pxo2 = pxo2 - 4 + p;
732			}
733
734			/* smooth top and left block borders with neighbours */
735		✗	if (((pxoff - p + k) < 0) || ((pxoff - p + k) >= maxpxo)
736		✗	|| ((pxoff + 3 * p) < 0) || ((pxoff + 3 * p) >= maxpxo)
737		✗	|| (i == 0) || (j == 0))
738		✗	continue;
739		✗	if (param & 0x80) {
740		✗	for (k = 0; k < 4; k++)
741		✗	*(dst + pxoff + k) = ((*(dst + pxoff + k) + *(dst + pxoff - p + k)) >> 1) | 0x80;
742		✗	*(dst + pxoff + 1 * p) = (*(dst + pxoff + 1 * p) + *(dst + pxoff + 1 * p - 1)) >> 1 | 0x80;
743		✗	*(dst + pxoff + 2 * p) = (*(dst + pxoff + 2 * p) + *(dst + pxoff + 2 * p - 1)) >> 1 | 0x80;
744		✗	*(dst + pxoff + 3 * p) = (*(dst + pxoff + 3 * p) + *(dst + pxoff + 3 * p - 1)) >> 1 | 0x80;
745			} else {
746		✗	for (k = 0; k < 4; k++)
747		✗	*(dst + pxoff + k) = ((*(dst + pxoff + k) + *(dst + pxoff - p + k)) >> 1) & 0x7f;
748		✗	*(dst + pxoff + 1 * p) = (*(dst + pxoff + 1 * p) + *(dst + pxoff + 1 * p - 1)) >> 1;
749		✗	*(dst + pxoff + 2 * p) = (*(dst + pxoff + 2 * p) + *(dst + pxoff + 2 * p - 1)) >> 1;
750		✗	*(dst + pxoff + 3 * p) = (*(dst + pxoff + 3 * p) + *(dst + pxoff + 3 * p - 1)) >> 1;
751			}
752			}
753			}
754		✗	return 0;
755			}
756
757		1	static int rle_decode(SANMVideoContext *ctx, GetByteContext *gb, uint8_t *dst, const int out_size)
758			{
759		1	int opcode, color, run_len, left = out_size;
760
761	2/2 ✓ Branch 0 taken 4800 times. ✓ Branch 1 taken 1 times.	4801	while (left > 0) {
762		4800	opcode = bytestream2_get_byte(gb);
763		4800	run_len = (opcode >> 1) + 1;
764	2/4 ✓ Branch 0 taken 4800 times. ✗ Branch 1 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 4800 times.	4800	if (run_len > left || bytestream2_get_bytes_left(gb) <= 0)
765		✗	return AVERROR_INVALIDDATA;
766
767	1/2 ✓ Branch 0 taken 4800 times. ✗ Branch 1 not taken.	4800	if (opcode & 1) {
768		4800	color = bytestream2_get_byte(gb);
769		4800	memset(dst, color, run_len);
770			} else {
771		✗	if (bytestream2_get_bytes_left(gb) < run_len)
772		✗	return AVERROR_INVALIDDATA;
773		✗	bytestream2_get_bufferu(gb, dst, run_len);
774			}
775
776		4800	dst += run_len;
777		4800	left -= run_len;
778			}
779
780		1	return 0;
781			}
782
783		✗	static int old_codec23(SANMVideoContext *ctx, GetByteContext *gb, int top, int left,
784			int width, int height, uint8_t param, uint16_t param2)
785			{
786		✗	const uint32_t maxpxo = ctx->height * ctx->pitch;
787			uint8_t *dst, lut[256], c;
788			int i, j, k, pc, sk;
789			int32_t pxoff;
790
791		✗	if (ctx->subversion < 2) {
792			/* Rebel Assault 1: constant offset + 0xd0 */
793		✗	for (i = 0; i < 256; i++)
794		✗	lut[i] = (i + param + 0xd0) & 0xff;
795		✗	} else if (param2 == 256) {
796		✗	if (bytestream2_get_bytes_left(gb) < 256)
797		✗	return AVERROR_INVALIDDATA;
798		✗	bytestream2_get_bufferu(gb, ctx->c23lut, 256);
799		✗	} else if (param2 < 256) {
800		✗	for (i = 0; i < 256; i++)
801		✗	lut[i] = (i + param2) & 0xff;
802			} else {
803		✗	memcpy(lut, ctx->c23lut, 256);
804			}
805		✗	if (bytestream2_get_bytes_left(gb) < 1)
806		✗	return 0; /* some c23 frames just set up the LUT */
807
808		✗	dst = (uint8_t *)ctx->frm0;
809		✗	for (i = 0; i < height; i++) {
810		✗	if (bytestream2_get_bytes_left(gb) < 2)
811		✗	return 0;
812		✗	pxoff = left + ((top + i) * ctx->pitch);
813		✗	k = bytestream2_get_le16u(gb);
814		✗	sk = 1;
815		✗	pc = 0;
816		✗	while (k > 0 && pc <= width) {
817		✗	if (bytestream2_get_bytes_left(gb) < 1)
818		✗	return AVERROR_INVALIDDATA;
819		✗	j = bytestream2_get_byteu(gb);
820		✗	if (sk) {
821		✗	pxoff += j;
822		✗	pc += j;
823			} else {
824		✗	while (j--) {
825		✗	if (pxoff >=0 && pxoff < maxpxo) {
826		✗	c = *(dst + pxoff);
827		✗	*(dst + pxoff) = lut[c];
828			}
829		✗	pxoff++;
830		✗	pc++;
831			}
832			}
833		✗	sk ^= 1;
834			}
835			}
836		✗	return 0;
837			}
838
839		✗	static int old_codec21(SANMVideoContext *ctx, GetByteContext *gb, int top, int left,
840			int width, int height)
841			{
842		✗	const uint32_t maxpxo = ctx->height * ctx->pitch;
843		✗	uint8_t *dst = (uint8_t *)ctx->frm0, c;
844			int i, j, k, pc, sk, pxoff;
845
846		✗	dst = (uint8_t *)ctx->frm0;
847		✗	for (i = 0; i < height; i++) {
848		✗	if (bytestream2_get_bytes_left(gb) < 2)
849		✗	return 0;
850		✗	pxoff = left + ((top + i) * ctx->pitch);
851		✗	k = bytestream2_get_le16u(gb);
852		✗	sk = 1;
853		✗	pc = 0;
854		✗	while (k > 0 && pc <= width) {
855		✗	if (bytestream2_get_bytes_left(gb) < 2)
856		✗	return AVERROR_INVALIDDATA;
857		✗	j = bytestream2_get_le16u(gb);
858		✗	k -= 2;
859		✗	if (sk) {
860		✗	pxoff += j;
861		✗	pc += j;
862			} else {
863		✗	if (bytestream2_get_bytes_left(gb) < (j + 1))
864		✗	return AVERROR_INVALIDDATA;
865			do {
866		✗	c = bytestream2_get_byteu(gb);
867		✗	if (pxoff >=0 && pxoff < maxpxo) {
868		✗	*(dst + pxoff) = c;
869			}
870		✗	pxoff++;
871		✗	pc++;
872		✗	j--;
873		✗	k--;
874		✗	} while (j > -1);
875			}
876		✗	sk ^= 1;
877			}
878			}
879		✗	return 0;
880			}
881
882		✗	static int old_codec1(SANMVideoContext *ctx, GetByteContext *gb, int top,
883			int left, int width, int height, int opaque)
884			{
885			int i, j, len, flag, code, val, end, pxoff;
886		✗	const int maxpxo = ctx->height * ctx->pitch;
887		✗	uint8_t *dst = (uint8_t *)ctx->frm0;
888
889		✗	for (i = 0; i < height; i++) {
890		✗	if (bytestream2_get_bytes_left(gb) < 2)
891		✗	return AVERROR_INVALIDDATA;
892
893		✗	len = bytestream2_get_le16u(gb);
894		✗	end = bytestream2_tell(gb) + len;
895
896		✗	pxoff = left + ((top + i) * ctx->pitch);
897		✗	while (bytestream2_tell(gb) < end) {
898		✗	if (bytestream2_get_bytes_left(gb) < 2)
899		✗	return AVERROR_INVALIDDATA;
900
901		✗	code = bytestream2_get_byteu(gb);
902		✗	flag = code & 1;
903		✗	code = (code >> 1) + 1;
904		✗	if (flag) {
905		✗	val = bytestream2_get_byteu(gb);
906		✗	if (val || opaque) {
907		✗	for (j = 0; j < code; j++) {
908		✗	if (pxoff >= 0 && pxoff < maxpxo)
909		✗	*(dst + pxoff) = val;
910		✗	pxoff++;
911			}
912			} else {
913		✗	pxoff += code;
914			}
915			} else {
916		✗	if (bytestream2_get_bytes_left(gb) < code)
917		✗	return AVERROR_INVALIDDATA;
918		✗	for (j = 0; j < code; j++) {
919		✗	val = bytestream2_get_byteu(gb);
920		✗	if ((pxoff >= 0) && (pxoff < maxpxo) && (val || opaque))
921		✗	*(dst + pxoff) = val;
922		✗	pxoff++;
923			}
924			}
925			}
926			}
927		✗	ctx->rotate_code = 0;
928
929		✗	return 0;
930			}
931
932		✗	static int old_codec2(SANMVideoContext *ctx, GetByteContext *gb, int top,
933			int left, int width, int height)
934			{
935		✗	uint8_t *dst = (uint8_t *)ctx->frm0, col;
936		✗	int16_t xpos = left, ypos = top;
937
938		✗	while (bytestream2_get_bytes_left(gb) > 3) {
939		✗	xpos += bytestream2_get_le16u(gb);
940		✗	ypos += bytestream2_get_byteu(gb);
941		✗	col = bytestream2_get_byteu(gb);
942		✗	if (xpos >= 0 && ypos >= 0 &&
943		✗	xpos < ctx->width && ypos < ctx->height) {
944		✗	*(dst + xpos + ypos * ctx->pitch) = col;
945			}
946			}
947		✗	return 0;
948			}
949
950		✗	static int old_codec20(SANMVideoContext *ctx, int w, int h)
951			{
952		✗	uint8_t *dst = (uint8_t *)ctx->frm0;
953
954		✗	if (bytestream2_get_bytes_left(&ctx->gb) < w * h)
955		✗	return AVERROR_INVALIDDATA;
956
957		✗	if (w == ctx->pitch) {
958		✗	bytestream2_get_bufferu(&ctx->gb, dst, w * h);
959			} else {
960		✗	for (int i = 0; i < h; i++) {
961		✗	bytestream2_get_bufferu(&ctx->gb, dst, w);
962		✗	dst += ctx->pitch;
963			}
964			}
965		✗	return 0;
966			}
967
968		✗	static inline void codec37_mv(uint8_t *dst, const uint8_t *src,
969			int height, int stride, int x, int y)
970			{
971			int pos, i, j;
972
973		✗	pos = x + y * stride;
974		✗	for (j = 0; j < 4; j++) {
975		✗	for (i = 0; i < 4; i++) {
976		✗	if ((pos + i) < 0 || (pos + i) >= height * stride)
977		✗	dst[i] = 0;
978			else
979		✗	dst[i] = src[i];
980			}
981		✗	dst += stride;
982		✗	src += stride;
983		✗	pos += stride;
984			}
985		✗	}
986
987		✗	static int old_codec37(SANMVideoContext *ctx, int width, int height)
988			{
989			int i, j, k, l, t, run, len, code, skip, mx, my;
990		✗	ptrdiff_t stride = ctx->pitch;
991			uint8_t *dst, *prev;
992		✗	int skip_run = 0;
993		✗	int compr = bytestream2_get_byte(&ctx->gb);
994		✗	int mvoff = bytestream2_get_byte(&ctx->gb);
995		✗	int seq = bytestream2_get_le16(&ctx->gb);
996		✗	uint32_t decoded_size = bytestream2_get_le32(&ctx->gb);
997			int flags;
998
999		✗	bytestream2_skip(&ctx->gb, 4);
1000		✗	flags = bytestream2_get_byte(&ctx->gb);
1001		✗	bytestream2_skip(&ctx->gb, 3);
1002
1003		✗	if (decoded_size > ctx->height * stride) {
1004		✗	decoded_size = ctx->height * stride;
1005		✗	av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n");
1006			}
1007
1008		✗	ctx->rotate_code = 0;
1009
1010		✗	if (((seq & 1) || !(flags & 1)) && (compr && compr != 2)) {
1011		✗	FFSWAP(uint16_t*, ctx->frm1, ctx->frm2);
1012			}
1013
1014		✗	dst = ((uint8_t*)ctx->frm1);
1015		✗	prev = ((uint8_t*)ctx->frm2);
1016
1017		✗	if (mvoff > 2) {
1018		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Invalid motion base value %d.\n", mvoff);
1019		✗	return AVERROR_INVALIDDATA;
1020			}
1021
1022		✗	switch (compr) {
1023		✗	case 0:
1024		✗	for (i = 0; i < height; i++) {
1025		✗	bytestream2_get_buffer(&ctx->gb, dst, width);
1026		✗	dst += stride;
1027			}
1028		✗	memset(ctx->frm2, 0, ctx->height * stride);
1029		✗	break;
1030		✗	case 1:
1031		✗	run = 0;
1032		✗	len = -1;
1033		✗	code = 0;
1034
1035		✗	for (j = 0; j < height; j += 4) {
1036		✗	for (i = 0; i < width; i += 4) {
1037		✗	if (len < 0) {
1038		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1039		✗	return AVERROR_INVALIDDATA;
1040		✗	code = bytestream2_get_byte(&ctx->gb);
1041		✗	len = code >> 1;
1042		✗	run = code & 1;
1043		✗	skip = 0;
1044			} else {
1045		✗	skip = run;
1046			}
1047
1048		✗	if (!skip) {
1049		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1050		✗	return AVERROR_INVALIDDATA;
1051		✗	code = bytestream2_get_byte(&ctx->gb);
1052		✗	if (code == 0xff) {
1053		✗	len--;
1054		✗	for (k = 0; k < 4; k++) {
1055		✗	for (l = 0; l < 4; l++) {
1056		✗	if (len < 0) {
1057		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1058		✗	return AVERROR_INVALIDDATA;
1059		✗	code = bytestream2_get_byte(&ctx->gb);
1060		✗	len = code >> 1;
1061		✗	run = code & 1;
1062		✗	if (run) {
1063		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1064		✗	return AVERROR_INVALIDDATA;
1065		✗	code = bytestream2_get_byte(&ctx->gb);
1066			}
1067			}
1068		✗	if (!run) {
1069		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1070		✗	return AVERROR_INVALIDDATA;
1071		✗	code = bytestream2_get_byte(&ctx->gb);
1072			}
1073		✗	*(dst + i + (k * stride) + l) = code;
1074		✗	len--;
1075			}
1076			}
1077		✗	continue;
1078			}
1079			}
1080			/* 4x4 block copy from prev with MV */
1081		✗	mx = c37_mv[(mvoff * 255 + code) * 2];
1082		✗	my = c37_mv[(mvoff * 255 + code) * 2 + 1];
1083		✗	codec37_mv(dst + i, prev + i + mx + my * stride,
1084			ctx->height, stride, i + mx, j + my);
1085		✗	len--;
1086			}
1087		✗	dst += stride * 4;
1088		✗	prev += stride * 4;
1089			}
1090		✗	break;
1091		✗	case 2:
1092		✗	if (rle_decode(ctx, &ctx->gb, dst, decoded_size))
1093		✗	return AVERROR_INVALIDDATA;
1094		✗	memset(ctx->frm2, 0, ctx->frm2_size);
1095		✗	break;
1096		✗	case 3:
1097			case 4:
1098		✗	for (j = 0; j < height; j += 4) {
1099		✗	for (i = 0; i < width; i += 4) {
1100			int code;
1101		✗	if (skip_run) {
1102		✗	skip_run--;
1103		✗	copy_block4(dst + i, prev + i, stride, stride, 4);
1104		✗	continue;
1105			}
1106		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1107		✗	return AVERROR_INVALIDDATA;
1108		✗	code = bytestream2_get_byteu(&ctx->gb);
1109		✗	if (code == 0xFF) {
1110		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
1111		✗	return AVERROR_INVALIDDATA;
1112		✗	for (k = 0; k < 4; k++)
1113		✗	bytestream2_get_bufferu(&ctx->gb, dst + i + k * stride, 4);
1114		✗	} else if ((flags & 4) && (code == 0xFE)) {
1115		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1116		✗	return AVERROR_INVALIDDATA;
1117		✗	for (k = 0; k < 4; k++)
1118		✗	memset(dst + i + k * stride, bytestream2_get_byteu(&ctx->gb), 4);
1119		✗	} else if ((flags & 4) && (code == 0xFD)) {
1120		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1121		✗	return AVERROR_INVALIDDATA;
1122		✗	t = bytestream2_get_byteu(&ctx->gb);
1123		✗	for (k = 0; k < 4; k++)
1124		✗	memset(dst + i + k * stride, t, 4);
1125			} else {
1126		✗	mx = c37_mv[(mvoff * 255 + code) * 2];
1127		✗	my = c37_mv[(mvoff * 255 + code) * 2 + 1];
1128		✗	codec37_mv(dst + i, prev + i + mx + my * stride,
1129			ctx->height, stride, i + mx, j + my);
1130
1131		✗	if ((compr == 4) && (code == 0)) {
1132		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1133		✗	return AVERROR_INVALIDDATA;
1134		✗	skip_run = bytestream2_get_byteu(&ctx->gb);
1135			}
1136			}
1137			}
1138		✗	dst += stride * 4;
1139		✗	prev += stride * 4;
1140			}
1141		✗	break;
1142		✗	default:
1143		✗	avpriv_report_missing_feature(ctx->avctx,
1144			"Subcodec 37 compression %d", compr);
1145		✗	return AVERROR_PATCHWELCOME;
1146			}
1147
1148		✗	memcpy(ctx->frm0, ctx->frm1, ctx->buf_size);
1149		✗	return 0;
1150			}
1151
1152		✗	static int process_block(SANMVideoContext *ctx, uint8_t *dst, uint8_t *prev1,
1153			uint8_t *prev2, int stride, int tbl, int size)
1154			{
1155			int code, k, t;
1156			uint8_t colors[2];
1157			int8_t *pglyph;
1158
1159		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1160		✗	return AVERROR_INVALIDDATA;
1161
1162		✗	code = bytestream2_get_byteu(&ctx->gb);
1163		✗	if (code >= 0xF8) {
1164		✗	switch (code) {
1165		✗	case 0xFF:
1166		✗	if (size == 2) {
1167		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1168		✗	return AVERROR_INVALIDDATA;
1169		✗	dst[0] = bytestream2_get_byteu(&ctx->gb);
1170		✗	dst[1] = bytestream2_get_byteu(&ctx->gb);
1171		✗	dst[0 + stride] = bytestream2_get_byteu(&ctx->gb);
1172		✗	dst[1 + stride] = bytestream2_get_byteu(&ctx->gb);
1173			} else {
1174		✗	size >>= 1;
1175		✗	if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))
1176		✗	return AVERROR_INVALIDDATA;
1177		✗	if (process_block(ctx, dst + size, prev1 + size, prev2 + size,
1178			stride, tbl, size))
1179		✗	return AVERROR_INVALIDDATA;
1180		✗	dst += size * stride;
1181		✗	prev1 += size * stride;
1182		✗	prev2 += size * stride;
1183		✗	if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))
1184		✗	return AVERROR_INVALIDDATA;
1185		✗	if (process_block(ctx, dst + size, prev1 + size, prev2 + size,
1186			stride, tbl, size))
1187		✗	return AVERROR_INVALIDDATA;
1188			}
1189		✗	break;
1190		✗	case 0xFE:
1191		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1192		✗	return AVERROR_INVALIDDATA;
1193
1194		✗	t = bytestream2_get_byteu(&ctx->gb);
1195		✗	for (k = 0; k < size; k++)
1196		✗	memset(dst + k * stride, t, size);
1197		✗	break;
1198		✗	case 0xFD:
1199		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 3)
1200		✗	return AVERROR_INVALIDDATA;
1201
1202		✗	code = bytestream2_get_byteu(&ctx->gb);
1203		✗	pglyph = (size == 8) ? ctx->p8x8glyphs[code] : ctx->p4x4glyphs[code];
1204		✗	bytestream2_get_bufferu(&ctx->gb, colors, 2);
1205
1206		✗	for (k = 0; k < size; k++)
1207		✗	for (t = 0; t < size; t++)
1208		✗	dst[t + k * stride] = colors[!*pglyph++];
1209		✗	break;
1210		✗	case 0xFC:
1211		✗	for (k = 0; k < size; k++)
1212		✗	memcpy(dst + k * stride, prev1 + k * stride, size);
1213		✗	break;
1214		✗	default:
1215		✗	k = bytestream2_tell(&ctx->gb);
1216		✗	bytestream2_seek(&ctx->gb, tbl + (code & 7), SEEK_SET);
1217		✗	t = bytestream2_get_byte(&ctx->gb);
1218		✗	bytestream2_seek(&ctx->gb, k, SEEK_SET);
1219		✗	for (k = 0; k < size; k++)
1220		✗	memset(dst + k * stride, t, size);
1221			}
1222			} else {
1223		✗	int mx = motion_vectors[code][0];
1224		✗	int my = motion_vectors[code][1];
1225		✗	int index = prev2 - (const uint8_t *)ctx->frm2;
1226
1227			av_assert2(index >= 0 && index < (ctx->buf_size >> 1));
1228
1229		✗	if (index < -mx - my * stride ||
1230		✗	(ctx->buf_size >> 1) - index < mx + size + (my + size - 1) * stride) {
1231		✗	av_log(ctx->avctx, AV_LOG_ERROR, "MV is invalid.\n");
1232		✗	return AVERROR_INVALIDDATA;
1233			}
1234
1235		✗	for (k = 0; k < size; k++)
1236		✗	memcpy(dst + k * stride, prev2 + mx + (my + k) * stride, size);
1237			}
1238
1239		✗	return 0;
1240			}
1241
1242		✗	static void codec47_read_interptable(SANMVideoContext *ctx)
1243			{
1244		✗	uint8_t *p1, *p2, *itbl = ctx->c47itbl;
1245			int i, j;
1246
1247		✗	for (i = 0; i < 256; i++) {
1248		✗	p1 = p2 = itbl + i;
1249		✗	for (j = 256 - i; j; j--) {
1250		✗	*p1 = *p2 = bytestream2_get_byte(&ctx->gb);
1251		✗	p1 += 1;
1252		✗	p2 += 256;
1253			}
1254		✗	itbl += 256;
1255			}
1256		✗	}
1257
1258		✗	static void codec47_comp1(SANMVideoContext *ctx, uint8_t *dst_in, int width,
1259			int height, ptrdiff_t stride)
1260			{
1261		✗	uint8_t p1, *dst, *itbl = ctx->c47itbl;
1262			uint16_t px;
1263			int i, j;
1264
1265		✗	dst = dst_in + stride;
1266		✗	for (i = 0; i < height; i += 2) {
1267		✗	p1 = bytestream2_get_byte(&ctx->gb);
1268		✗	*dst++ = p1;
1269		✗	*dst++ = p1;
1270		✗	px = p1;
1271		✗	for (j = 2; j < width; j += 2) {
1272		✗	p1 = bytestream2_get_byte(&ctx->gb);
1273		✗	px = (px << 8) | p1;
1274		✗	*dst++ = itbl[px];
1275		✗	*dst++ = p1;
1276			}
1277		✗	dst += stride;
1278			}
1279
1280		✗	memcpy(dst_in, dst_in + stride, width);
1281		✗	dst = dst_in + stride + stride;
1282		✗	for (i = 2; i < height - 1; i += 2) {
1283		✗	for (j = 0; j < width; j++) {
1284		✗	px = (*(dst - stride) << 8) | *(dst + stride);
1285		✗	*dst++ = itbl[px];
1286			}
1287		✗	dst += stride;
1288			}
1289		✗	}
1290
1291		✗	static int old_codec47(SANMVideoContext *ctx, int width, int height)
1292			{
1293			uint32_t decoded_size;
1294			int i, j;
1295		✗	ptrdiff_t stride = ctx->pitch;
1296		✗	uint8_t *dst = (uint8_t *)ctx->frm0;
1297		✗	uint8_t *prev1 = (uint8_t *)ctx->frm1;
1298		✗	uint8_t *prev2 = (uint8_t *)ctx->frm2;
1299			uint8_t auxcol[2];
1300		✗	int tbl_pos = bytestream2_tell(&ctx->gb);
1301		✗	int seq = bytestream2_get_le16(&ctx->gb);
1302		✗	int compr = bytestream2_get_byte(&ctx->gb);
1303		✗	int new_rot = bytestream2_get_byte(&ctx->gb);
1304		✗	int skip = bytestream2_get_byte(&ctx->gb);
1305
1306		✗	bytestream2_skip(&ctx->gb, 7);
1307		✗	auxcol[0] = bytestream2_get_byteu(&ctx->gb);
1308		✗	auxcol[1] = bytestream2_get_byteu(&ctx->gb);
1309		✗	decoded_size = bytestream2_get_le32(&ctx->gb);
1310		✗	bytestream2_skip(&ctx->gb, 8);
1311
1312		✗	if (decoded_size > ctx->height * stride) {
1313		✗	decoded_size = ctx->height * stride;
1314		✗	av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n");
1315			}
1316
1317		✗	if (skip & 1) {
1318		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 0x8080)
1319		✗	return AVERROR_INVALIDDATA;
1320		✗	codec47_read_interptable(ctx);
1321			}
1322		✗	if (!seq) {
1323		✗	ctx->prev_seq = -1;
1324		✗	memset(prev1, auxcol[0], ctx->height * stride);
1325		✗	memset(prev2, auxcol[1], ctx->height * stride);
1326			}
1327
1328		✗	switch (compr) {
1329		✗	case 0:
1330		✗	if (bytestream2_get_bytes_left(&ctx->gb) < width * height)
1331		✗	return AVERROR_INVALIDDATA;
1332		✗	for (j = 0; j < height; j++) {
1333		✗	bytestream2_get_bufferu(&ctx->gb, dst, width);
1334		✗	dst += stride;
1335			}
1336		✗	break;
1337		✗	case 1:
1338		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ((width + 1) >> 1) * ((height + 1) >> 1))
1339		✗	return AVERROR_INVALIDDATA;
1340		✗	codec47_comp1(ctx, dst, width, height, stride);
1341		✗	break;
1342		✗	case 2:
1343		✗	if (seq == ctx->prev_seq + 1) {
1344		✗	for (j = 0; j < height; j += 8) {
1345		✗	for (i = 0; i < width; i += 8)
1346		✗	if (process_block(ctx, dst + i, prev1 + i, prev2 + i, stride,
1347			tbl_pos + 8, 8))
1348		✗	return AVERROR_INVALIDDATA;
1349		✗	dst += stride * 8;
1350		✗	prev1 += stride * 8;
1351		✗	prev2 += stride * 8;
1352			}
1353			}
1354		✗	break;
1355		✗	case 3:
1356		✗	memcpy(ctx->frm0, ctx->frm2, ctx->pitch * ctx->height);
1357		✗	break;
1358		✗	case 4:
1359		✗	memcpy(ctx->frm0, ctx->frm1, ctx->pitch * ctx->height);
1360		✗	break;
1361		✗	case 5:
1362		✗	if (rle_decode(ctx, &ctx->gb, dst, decoded_size))
1363		✗	return AVERROR_INVALIDDATA;
1364		✗	break;
1365		✗	default:
1366		✗	avpriv_report_missing_feature(ctx->avctx,
1367			"Subcodec 47 compression %d", compr);
1368		✗	return AVERROR_PATCHWELCOME;
1369			}
1370		✗	if (seq == ctx->prev_seq + 1)
1371		✗	ctx->rotate_code = new_rot;
1372			else
1373		✗	ctx->rotate_code = 0;
1374		✗	ctx->prev_seq = seq;
1375
1376		✗	return 0;
1377			}
1378
1379			// scale 4x4 input block to an 8x8 output block
1380		✗	static void c48_4to8(uint8_t *dst, const uint8_t *src, const uint16_t w)
1381			{
1382			uint16_t p;
1383			// dst is always at least 16bit aligned
1384		✗	for (int i = 0; i < 4; i++) {
1385		✗	for (int j = 0; j < 8; j += 2) {
1386		✗	p = *src++;
1387		✗	p = (p << 8) | p;
1388		✗	*((uint16_t *)(dst + w * 0 + j)) = p;
1389		✗	*((uint16_t *)(dst + w * 1 + j)) = p;
1390			}
1391		✗	dst += w * 2;
1392			}
1393		✗	}
1394
1395		✗	static int codec48_block(SANMVideoContext *ctx, uint8_t *dst, uint8_t *db,
1396			const uint16_t w)
1397			{
1398			uint8_t opc, sb[16];
1399			int i, j, k, l;
1400			int16_t mvofs;
1401			uint32_t ofs;
1402
1403		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1404		✗	return 1;
1405
1406		✗	opc = bytestream2_get_byteu(&ctx->gb);
1407		✗	switch (opc) {
1408		✗	case 0xFF: // 1x1 -> 8x8 block scale
1409		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1410		✗	return 1;
1411
1412		✗	opc = bytestream2_get_byteu(&ctx->gb);
1413		✗	for (i = 0; i < 16; i++)
1414		✗	sb[i] = opc;
1415		✗	c48_4to8(dst, sb, w);
1416		✗	break;
1417		✗	case 0xFE: // 1x 8x8 copy from deltabuf, 16bit mv from source
1418		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
1419		✗	return 1;
1420		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1421		✗	for (i = 0; i < 8; i++) {
1422		✗	ofs = w * i;
1423		✗	for (k = 0; k < 8; k++)
1424		✗	*(dst + ofs + k) = *(db + ofs + k + mvofs);
1425			}
1426		✗	break;
1427		✗	case 0xFD: // 2x2 -> 8x8 block scale
1428		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1429		✗	return 1;
1430		✗	sb[ 5] = bytestream2_get_byteu(&ctx->gb);
1431		✗	sb[ 7] = bytestream2_get_byteu(&ctx->gb);
1432		✗	sb[13] = bytestream2_get_byteu(&ctx->gb);
1433		✗	sb[15] = bytestream2_get_byteu(&ctx->gb);
1434
1435		✗	sb[0] = sb[1] = sb[4] = sb[5];
1436		✗	sb[2] = sb[3] = sb[6] = sb[7];
1437		✗	sb[8] = sb[9] = sb[12] = sb[13];
1438		✗	sb[10] = sb[11] = sb[14] = sb[15];
1439		✗	c48_4to8(dst, sb, w);
1440		✗	break;
1441		✗	case 0xFC: // 4x copy 4x4 block, per-block c37_mv from source
1442		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1443		✗	return 1;
1444		✗	for (i = 0; i < 8; i += 4) {
1445		✗	for (k = 0; k < 8; k += 4) {
1446		✗	opc = bytestream2_get_byteu(&ctx->gb);
1447		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1448		✗	for (j = 0; j < 4; j++) {
1449		✗	ofs = (w * (j + i)) + k;
1450		✗	for (l = 0; l < 4; l++)
1451		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1452			}
1453			}
1454			}
1455		✗	break;
1456		✗	case 0xFB: // Copy 4x 4x4 blocks, per-block mv from source
1457		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 8)
1458		✗	return 1;
1459		✗	for (i = 0; i < 8; i += 4) {
1460		✗	for (k = 0; k < 8; k += 4) {
1461		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1462		✗	for (j = 0; j < 4; j++) {
1463		✗	ofs = (w * (j + i)) + k;
1464		✗	for (l = 0; l < 4; l++)
1465		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1466			}
1467			}
1468			}
1469		✗	break;
1470		✗	case 0xFA: // scale 4x4 input block to 8x8 dest block
1471		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
1472		✗	return 1;
1473		✗	bytestream2_get_bufferu(&ctx->gb, sb, 16);
1474		✗	c48_4to8(dst, sb, w);
1475		✗	break;
1476		✗	case 0xF9: // 16x 2x2 copy from delta, per-block c37_mv from source
1477		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
1478		✗	return 1;
1479		✗	for (i = 0; i < 8; i += 2) {
1480		✗	for (j = 0; j < 8; j += 2) {
1481		✗	ofs = (w * i) + j;
1482		✗	opc = bytestream2_get_byteu(&ctx->gb);
1483		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1484		✗	for (l = 0; l < 2; l++) {
1485		✗	*(dst + ofs + l + 0) = *(db + ofs + l + 0 + mvofs);
1486		✗	*(dst + ofs + l + w) = *(db + ofs + l + w + mvofs);
1487			}
1488			}
1489			}
1490		✗	break;
1491		✗	case 0xF8: // 16x 2x2 blocks copy, 16bit mv from source
1492		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 32)
1493		✗	return 1;
1494		✗	for (i = 0; i < 8; i += 2) {
1495		✗	for (j = 0; j < 8; j += 2) {
1496		✗	ofs = w * i + j;
1497		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1498		✗	for (l = 0; l < 2; l++) {
1499		✗	*(dst + ofs + l + 0) = *(db + ofs + l + 0 + mvofs);
1500		✗	*(dst + ofs + l + w) = *(db + ofs + l + w + mvofs);
1501			}
1502			}
1503			}
1504		✗	break;
1505		✗	case 0xF7: // copy 8x8 block from src to dest
1506		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 64)
1507		✗	return 1;
1508		✗	for (i = 0; i < 8; i++) {
1509		✗	ofs = i * w;
1510		✗	for (l = 0; l < 8; l++)
1511		✗	*(dst + ofs + l) = bytestream2_get_byteu(&ctx->gb);
1512			}
1513		✗	break;
1514		✗	default: // copy 8x8 block from prev, c37_mv from source
1515		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1516		✗	for (i = 0; i < 8; i++) {
1517		✗	ofs = i * w;
1518		✗	for (l = 0; l < 8; l++)
1519		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1520			}
1521		✗	break;
1522			}
1523		✗	return 0;
1524			}
1525
1526		✗	static int old_codec48(SANMVideoContext *ctx, int width, int height)
1527			{
1528			uint8_t *dst, *prev;
1529		✗	int compr = bytestream2_get_byte(&ctx->gb);
1530		✗	int mvidx = bytestream2_get_byte(&ctx->gb);
1531		✗	int seq = bytestream2_get_le16(&ctx->gb);
1532		✗	uint32_t decoded_size = bytestream2_get_le32(&ctx->gb);
1533			int i, j, flags;
1534
1535			// all codec48 videos use 1, but just to be safe...
1536		✗	if (mvidx != 1) {
1537		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Invalid motion base value %d.\n", mvidx);
1538		✗	return AVERROR_INVALIDDATA;
1539			}
1540
1541		✗	bytestream2_skip(&ctx->gb, 4);
1542		✗	flags = bytestream2_get_byte(&ctx->gb);
1543		✗	bytestream2_skip(&ctx->gb, 3);
1544
1545		✗	if (flags & 8) {
1546		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 0x8080)
1547		✗	return AVERROR_INVALIDDATA;
1548		✗	codec47_read_interptable(ctx);
1549			}
1550
1551		✗	dst = (uint8_t*)ctx->frm0;
1552		✗	prev = (uint8_t*)ctx->frm2;
1553
1554		✗	if (!seq) {
1555		✗	ctx->prev_seq = -1;
1556		✗	memset(prev, 0, ctx->aligned_height * width);
1557			}
1558
1559		✗	switch (compr) {
1560		✗	case 0:
1561		✗	if (bytestream2_get_bytes_left(&ctx->gb) < width * height)
1562		✗	return AVERROR_INVALIDDATA;
1563		✗	for (j = 0; j < height; j++) {
1564		✗	bytestream2_get_bufferu(&ctx->gb, dst, width);
1565		✗	dst += width;
1566			}
1567		✗	break;
1568		✗	case 2:
1569		✗	if (rle_decode(ctx, &ctx->gb, dst, decoded_size))
1570		✗	return AVERROR_INVALIDDATA;
1571		✗	break;
1572		✗	case 3:
1573		✗	if (seq == ctx->prev_seq + 1) {
1574		✗	for (j = 0; j < height; j += 8) {
1575		✗	for (i = 0; i < width; i += 8) {
1576		✗	if (codec48_block(ctx, dst + i, prev + i, width))
1577		✗	return AVERROR_INVALIDDATA;
1578			}
1579		✗	dst += width * 8;
1580		✗	prev += width * 8;
1581			}
1582			}
1583		✗	break;
1584		✗	case 5:
1585		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ((width + 1) >> 1) * ((height + 1) >> 1))
1586		✗	return AVERROR_INVALIDDATA;
1587		✗	codec47_comp1(ctx, dst, width, height, width);
1588		✗	break;
1589
1590		✗	default:
1591		✗	avpriv_report_missing_feature(ctx->avctx,
1592			"Subcodec 48 compression %d", compr);
1593		✗	return AVERROR_PATCHWELCOME;
1594			}
1595		✗	ctx->rotate_code = 1; // swap frm[0] and frm[2]
1596		✗	ctx->prev_seq = seq;
1597		✗	return 0;
1598			}
1599
1600		✗	static int process_frame_obj(SANMVideoContext *ctx, GetByteContext *gb)
1601			{
1602			uint16_t w, h, parm2;
1603			uint8_t codec, param;
1604			int16_t left, top;
1605
1606		✗	codec = bytestream2_get_byteu(gb);
1607		✗	param = bytestream2_get_byteu(gb);
1608		✗	left = bytestream2_get_le16u(gb);
1609		✗	top = bytestream2_get_le16u(gb);
1610		✗	w = bytestream2_get_le16u(gb);
1611		✗	h = bytestream2_get_le16u(gb);
1612		✗	bytestream2_skip(gb, 2);
1613		✗	parm2 = bytestream2_get_le16u(gb);
1614
1615		✗	if (w < 1 || h < 1 || w > 800 || h > 600 || left > 800 || top > 600) {
1616		✗	av_log(ctx->avctx, AV_LOG_WARNING,
1617			"ignoring invalid fobj dimensions: c%d %d %d @ %d %d\n",
1618			codec, w, h, left, top);
1619		✗	return 0;
1620			}
1621
1622		✗	if (!ctx->have_dimensions) {
1623			int xres, yres;
1624		✗	if (ctx->subversion < 2) {
1625			/* Rebel Assault 1: 384x242 internal size */
1626		✗	xres = 384;
1627		✗	yres = 242;
1628		✗	ctx->have_dimensions = 1;
1629		✗	} else if (codec == 37 || codec == 47 || codec == 48) {
1630			/* these codecs work on full frames, trust their dimensions */
1631		✗	xres = w;
1632		✗	yres = h;
1633		✗	ctx->have_dimensions = 1;
1634			} else {
1635			/* Rebel Assault 2: 424x260 internal size */
1636		✗	if (((left + w) == 424) && ((top + h) == 260))
1637		✗	ctx->have_dimensions = 1;
1638
1639		✗	xres = FFMAX(left + w, ctx->width);
1640		✗	yres = FFMAX(top + h, ctx->height);
1641			}
1642
1643		✗	if (ctx->width < xres || ctx->height < yres) {
1644		✗	int ret = ff_set_dimensions(ctx->avctx, xres, yres);
1645		✗	if (ret < 0)
1646		✗	return ret;
1647		✗	init_sizes(ctx, xres, yres);
1648		✗	if (init_buffers(ctx)) {
1649		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Error resizing buffers.\n");
1650		✗	return AVERROR(ENOMEM);
1651			}
1652			}
1653			} else {
1654		✗	if (((left + w > ctx->width) || (top + h > ctx->height))
1655		✗	&& (codec >= 37)) {
1656			/* correct unexpected overly large frames: this happens
1657			* for instance with The Dig's sq1.san video: it has a few
1658			* (all black) 640x480 frames halfway in, while the rest is
1659			* 320x200.
1660			*/
1661		✗	av_log(ctx->avctx, AV_LOG_WARNING,
1662			"resizing too large fobj: c%d %d %d @ %d %d\n", codec, w, h, left, top);
1663		✗	w = ctx->width;
1664		✗	h = ctx->height;
1665			}
1666			}
1667
1668			/* on first FOBJ, when the codec is not one of the
1669			* full-buffer codecs (37/47/48), frm0 needs to be cleared.
1670			*/
1671		✗	if (ctx->first_fob) {
1672		✗	ctx->first_fob = 0;
1673		✗	if (codec < 37)
1674		✗	memset(ctx->frm0, 0, ctx->frm0_size);
1675			}
1676
1677		✗	switch (codec) {
1678		✗	case 1:
1679			case 3:
1680		✗	return old_codec1(ctx, gb, top, left, w, h, codec == 3);
1681		✗	case 2:
1682		✗	return old_codec2(ctx, gb, top, left, w, h);
1683		✗	case 4:
1684			case 5:
1685			case 33:
1686			case 34:
1687		✗	return old_codec4(ctx, gb, top, left, w, h, param, parm2, codec);
1688		✗	case 20:
1689		✗	return old_codec20(ctx, w, h);
1690		✗	case 21:
1691		✗	return old_codec21(ctx, gb, top, left, w, h);
1692		✗	case 23:
1693		✗	return old_codec23(ctx, gb, top, left, w, h, param, parm2);
1694		✗	case 37:
1695		✗	return old_codec37(ctx, w, h);
1696		✗	case 45:
1697		✗	return 0;
1698		✗	case 47:
1699		✗	return old_codec47(ctx, w, h);
1700		✗	case 48:
1701		✗	return old_codec48(ctx, w, h);
1702		✗	default:
1703		✗	avpriv_request_sample(ctx->avctx, "Subcodec %d", codec);
1704		✗	ctx->frame->flags |= AV_FRAME_FLAG_CORRUPT;
1705		✗	return 0;
1706			}
1707			}
1708
1709		✗	static int process_ftch(SANMVideoContext *ctx, int size)
1710			{
1711		✗	uint8_t *sf = ctx->stored_frame;
1712			int xoff, yoff, left, top, ret;
1713			GetByteContext gb;
1714			uint32_t sz;
1715
1716			/* FTCH defines additional x/y offsets */
1717		✗	if (size != 12) {
1718		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 6)
1719		✗	return AVERROR_INVALIDDATA;
1720		✗	bytestream2_skip(&ctx->gb, 2);
1721		✗	xoff = bytestream2_get_le16u(&ctx->gb);
1722		✗	yoff = bytestream2_get_le16u(&ctx->gb);
1723			} else {
1724		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 12)
1725		✗	return AVERROR_INVALIDDATA;
1726		✗	bytestream2_skip(&ctx->gb, 4);
1727		✗	xoff = bytestream2_get_be32u(&ctx->gb);
1728		✗	yoff = bytestream2_get_be32u(&ctx->gb);
1729			}
1730
1731		✗	sz = *(uint32_t *)(sf + 0);
1732		✗	if ((sz > 0) && (sz <= ctx->stored_frame_size - 4)) {
1733			/* add the FTCH offsets to the left/top values of the stored FOBJ */
1734		✗	left = av_le2ne16(*(int16_t *)(sf + 4 + 2));
1735		✗	top = av_le2ne16(*(int16_t *)(sf + 4 + 4));
1736		✗	*(int16_t *)(sf + 4 + 2) = av_le2ne16(left + xoff);
1737		✗	*(int16_t *)(sf + 4 + 4) = av_le2ne16(top + yoff);
1738
1739			/* decode the stored FOBJ */
1740		✗	bytestream2_init(&gb, sf + 4, sz);
1741		✗	ret = process_frame_obj(ctx, &gb);
1742
1743			/* now restore the original left/top values again */
1744		✗	*(int16_t *)(sf + 4 + 2) = av_le2ne16(left);
1745		✗	*(int16_t *)(sf + 4 + 4) = av_le2ne16(top);
1746			} else {
1747			/* this happens a lot in RA1: The individual files are meant to
1748			* be played in sequence, with some referencing objects STORed
1749			* by previous files, e.g. the cockpit codec21 object in RA1 LVL8.
1750			* But spamming the log with errors is also not helpful, so
1751			* here we simply ignore this case.
1752			*/
1753		✗	ret = 0;
1754			}
1755		✗	return ret;
1756			}
1757
1758		✗	static int process_xpal(SANMVideoContext *ctx, int size)
1759			{
1760		✗	int16_t *dp = ctx->delta_pal;
1761		✗	uint32_t *pal = ctx->pal;
1762			uint16_t cmd;
1763			uint8_t c[3];
1764			int i, j;
1765
1766		✗	bytestream2_skip(&ctx->gb, 2);
1767		✗	cmd = bytestream2_get_be16(&ctx->gb);
1768
1769		✗	if (cmd == 1) {
1770		✗	for (i = 0; i < PALETTE_DELTA; i += 3) {
1771		✗	c[0] = (*pal >> 16) & 0xFF;
1772		✗	c[1] = (*pal >> 8) & 0xFF;
1773		✗	c[2] = (*pal >> 0) & 0xFF;
1774		✗	for (j = 0; j < 3; j++) {
1775		✗	int cl = (c[j] * 129) + *dp++;
1776		✗	c[j] = av_clip_uint8(cl / 128) & 0xFF;
1777			}
1778		✗	*pal++ = 0xFFU << 24 | c[0] << 16 | c[1] << 8 | c[2];
1779			}
1780		✗	} else if (cmd == 2) {
1781		✗	if (size < PALETTE_DELTA * 2 + 4) {
1782		✗	av_log(ctx->avctx, AV_LOG_ERROR,
1783			"Incorrect palette change block size %"PRIu32".\n", size);
1784		✗	return AVERROR_INVALIDDATA;
1785			}
1786		✗	for (i = 0; i < PALETTE_DELTA; i++)
1787		✗	dp[i] = bytestream2_get_le16u(&ctx->gb);
1788
1789		✗	if (size >= PALETTE_DELTA * 2 + 4 + PALETTE_SIZE * 3) {
1790		✗	for (i = 0; i < PALETTE_SIZE; i++)
1791		✗	ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb);
1792		✗	if (ctx->subversion < 2)
1793		✗	ctx->pal[0] = 0xFFU << 24;
1794			}
1795			}
1796		✗	return 0;
1797			}
1798
1799		✗	static int decode_0(SANMVideoContext *ctx)
1800			{
1801		✗	uint16_t *frm = ctx->frm0;
1802			int x, y;
1803
1804		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ctx->width * ctx->height * 2) {
1805		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for raw frame.\n");
1806		✗	return AVERROR_INVALIDDATA;
1807			}
1808		✗	for (y = 0; y < ctx->height; y++) {
1809		✗	for (x = 0; x < ctx->width; x++)
1810		✗	frm[x] = bytestream2_get_le16u(&ctx->gb);
1811		✗	frm += ctx->pitch;
1812			}
1813		✗	return 0;
1814			}
1815
1816		✗	static int decode_nop(SANMVideoContext *ctx)
1817			{
1818		✗	avpriv_request_sample(ctx->avctx, "Unknown/unsupported compression type");
1819		✗	return AVERROR_PATCHWELCOME;
1820			}
1821
1822		42964	static void copy_block(uint16_t *pdest, uint16_t *psrc, int block_size, ptrdiff_t pitch)
1823			{
1824		42964	uint8_t *dst = (uint8_t *)pdest;
1825		42964	uint8_t *src = (uint8_t *)psrc;
1826		42964	ptrdiff_t stride = pitch * 2;
1827
1828	3/4 ✓ Branch 0 taken 14526 times. ✓ Branch 1 taken 12400 times. ✓ Branch 2 taken 16038 times. ✗ Branch 3 not taken.	42964	switch (block_size) {
1829		14526	case 2:
1830		14526	copy_block4(dst, src, stride, stride, 2);
1831		14526	break;
1832		12400	case 4:
1833		12400	copy_block8(dst, src, stride, stride, 4);
1834		12400	break;
1835		16038	case 8:
1836		16038	copy_block16(dst, src, stride, stride, 8);
1837		16038	break;
1838			}
1839		42964	}
1840
1841		7913	static void fill_block(uint16_t *pdest, uint16_t color, int block_size, ptrdiff_t pitch)
1842			{
1843			int x, y;
1844
1845		7913	pitch -= block_size;
1846	2/2 ✓ Branch 0 taken 30438 times. ✓ Branch 1 taken 7913 times.	38351	for (y = 0; y < block_size; y++, pdest += pitch)
1847	2/2 ✓ Branch 0 taken 149540 times. ✓ Branch 1 taken 30438 times.	179978	for (x = 0; x < block_size; x++)
1848		149540	*pdest++ = color;
1849		7913	}
1850
1851		8368	static int draw_glyph(SANMVideoContext *ctx, uint16_t *dst, int index,
1852			uint16_t fg_color, uint16_t bg_color, int block_size,
1853			ptrdiff_t pitch)
1854			{
1855			int8_t *pglyph;
1856		8368	uint16_t colors[2] = { fg_color, bg_color };
1857			int x, y;
1858
1859	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 8368 times.	8368	if (index >= NGLYPHS) {
1860		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Ignoring nonexistent glyph #%u.\n", index);
1861		✗	return AVERROR_INVALIDDATA;
1862			}
1863
1864	2/2 ✓ Branch 0 taken 1158 times. ✓ Branch 1 taken 7210 times.	8368	pglyph = block_size == 8 ? ctx->p8x8glyphs[index] : ctx->p4x4glyphs[index];
1865		8368	pitch -= block_size;
1866
1867	2/2 ✓ Branch 0 taken 38104 times. ✓ Branch 1 taken 8368 times.	46472	for (y = 0; y < block_size; y++, dst += pitch)
1868	2/2 ✓ Branch 0 taken 189472 times. ✓ Branch 1 taken 38104 times.	227576	for (x = 0; x < block_size; x++)
1869		189472	*dst++ = colors[*pglyph++];
1870		8368	return 0;
1871			}
1872
1873		8029	static int opcode_0xf7(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch)
1874			{
1875		8029	uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch;
1876
1877	2/2 ✓ Branch 0 taken 825 times. ✓ Branch 1 taken 7204 times.	8029	if (block_size == 2) {
1878			uint32_t indices;
1879
1880	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 825 times.	825	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1881		✗	return AVERROR_INVALIDDATA;
1882
1883		825	indices = bytestream2_get_le32u(&ctx->gb);
1884		825	dst[0] = ctx->codebook[indices & 0xFF];
1885		825	indices >>= 8;
1886		825	dst[1] = ctx->codebook[indices & 0xFF];
1887		825	indices >>= 8;
1888		825	dst[pitch] = ctx->codebook[indices & 0xFF];
1889		825	indices >>= 8;
1890		825	dst[pitch + 1] = ctx->codebook[indices & 0xFF];
1891			} else {
1892			uint16_t fgcolor, bgcolor;
1893			int glyph;
1894
1895	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 7203 times.	7204	if (bytestream2_get_bytes_left(&ctx->gb) < 3)
1896		1	return AVERROR_INVALIDDATA;
1897
1898		7203	glyph = bytestream2_get_byteu(&ctx->gb);
1899		7203	bgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
1900		7203	fgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
1901
1902		7203	draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch);
1903			}
1904		8028	return 0;
1905			}
1906
1907		1169	static int opcode_0xf8(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch)
1908			{
1909		1169	uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch;
1910
1911	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 1165 times.	1169	if (block_size == 2) {
1912	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 4 times.	4	if (bytestream2_get_bytes_left(&ctx->gb) < 8)
1913		✗	return AVERROR_INVALIDDATA;
1914
1915		4	dst[0] = bytestream2_get_le16u(&ctx->gb);
1916		4	dst[1] = bytestream2_get_le16u(&ctx->gb);
1917		4	dst[pitch] = bytestream2_get_le16u(&ctx->gb);
1918		4	dst[pitch + 1] = bytestream2_get_le16u(&ctx->gb);
1919			} else {
1920			uint16_t fgcolor, bgcolor;
1921			int glyph;
1922
1923	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1165 times.	1165	if (bytestream2_get_bytes_left(&ctx->gb) < 5)
1924		✗	return AVERROR_INVALIDDATA;
1925
1926		1165	glyph = bytestream2_get_byteu(&ctx->gb);
1927		1165	bgcolor = bytestream2_get_le16u(&ctx->gb);
1928		1165	fgcolor = bytestream2_get_le16u(&ctx->gb);
1929
1930		1165	draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch);
1931			}
1932		1169	return 0;
1933			}
1934
1935		30376	static int good_mvec(SANMVideoContext *ctx, int cx, int cy, int mx, int my,
1936			int block_size)
1937			{
1938		30376	int start_pos = cx + mx + (cy + my) * ctx->pitch;
1939		30376	int end_pos = start_pos + (block_size - 1) * (ctx->pitch + 1);
1940
1941	2/4 ✓ Branch 0 taken 30376 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 30376 times. ✗ Branch 3 not taken.	30376	int good = start_pos >= 0 && end_pos < (ctx->buf_size >> 1);
1942
1943	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30376 times.	30376	if (!good)
1944		✗	av_log(ctx->avctx, AV_LOG_ERROR,
1945			"Ignoring invalid motion vector (%i, %i)->(%u, %u), block size = %u\n",
1946			cx + mx, cy + my, cx, cy, block_size);
1947
1948		30376	return good;
1949			}
1950
1951		71636	static int codec2subblock(SANMVideoContext *ctx, int cx, int cy, int blk_size)
1952			{
1953			int16_t mx, my, index;
1954			int opcode;
1955
1956	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 71635 times.	71636	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1957		1	return AVERROR_INVALIDDATA;
1958
1959		71635	opcode = bytestream2_get_byteu(&ctx->gb);
1960
1961	9/9 ✓ Branch 0 taken 28212 times. ✓ Branch 1 taken 2164 times. ✓ Branch 2 taken 12588 times. ✓ Branch 3 taken 8029 times. ✓ Branch 4 taken 1169 times. ✓ Branch 5 taken 315 times. ✓ Branch 6 taken 5496 times. ✓ Branch 7 taken 2102 times. ✓ Branch 8 taken 11560 times.	71635	switch (opcode) {
1962		28212	default:
1963		28212	mx = motion_vectors[opcode][0];
1964		28212	my = motion_vectors[opcode][1];
1965
1966	1/2 ✓ Branch 1 taken 28212 times. ✗ Branch 2 not taken.	28212	if (good_mvec(ctx, cx, cy, mx, my, blk_size)) {
1967		28212	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1968		28212	ctx->frm2 + cx + mx + ctx->pitch * (cy + my),
1969			blk_size, ctx->pitch);
1970			}
1971		28212	break;
1972		2164	case 0xF5:
1973	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2164 times.	2164	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
1974		✗	return AVERROR_INVALIDDATA;
1975		2164	index = bytestream2_get_le16u(&ctx->gb);
1976
1977		2164	mx = index % ctx->width;
1978		2164	my = index / ctx->width;
1979
1980	1/2 ✓ Branch 1 taken 2164 times. ✗ Branch 2 not taken.	2164	if (good_mvec(ctx, cx, cy, mx, my, blk_size)) {
1981		2164	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1982		2164	ctx->frm2 + cx + mx + ctx->pitch * (cy + my),
1983			blk_size, ctx->pitch);
1984			}
1985		2164	break;
1986		12588	case 0xF6:
1987		12588	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1988		12588	ctx->frm1 + cx + ctx->pitch * cy,
1989			blk_size, ctx->pitch);
1990		12588	break;
1991		8029	case 0xF7:
1992		8029	opcode_0xf7(ctx, cx, cy, blk_size, ctx->pitch);
1993		8029	break;
1994
1995		1169	case 0xF8:
1996		1169	opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch);
1997		1169	break;
1998		315	case 0xF9:
1999			case 0xFA:
2000			case 0xFB:
2001			case 0xFC:
2002		315	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
2003		315	ctx->small_codebook[opcode - 0xf9], blk_size, ctx->pitch);
2004		315	break;
2005		5496	case 0xFD:
2006	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 5496 times.	5496	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
2007		✗	return AVERROR_INVALIDDATA;
2008		10992	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
2009		5496	ctx->codebook[bytestream2_get_byteu(&ctx->gb)], blk_size, ctx->pitch);
2010		5496	break;
2011		2102	case 0xFE:
2012	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2102 times.	2102	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
2013		✗	return AVERROR_INVALIDDATA;
2014		2102	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
2015		2102	bytestream2_get_le16u(&ctx->gb), blk_size, ctx->pitch);
2016		2102	break;
2017		11560	case 0xFF:
2018	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11560 times.	11560	if (blk_size == 2) {
2019		✗	opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch);
2020			} else {
2021		11560	blk_size >>= 1;
2022	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx, cy, blk_size))
2023		✗	return AVERROR_INVALIDDATA;
2024	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx + blk_size, cy, blk_size))
2025		✗	return AVERROR_INVALIDDATA;
2026	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx, cy + blk_size, blk_size))
2027		✗	return AVERROR_INVALIDDATA;
2028	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx + blk_size, cy + blk_size, blk_size))
2029		✗	return AVERROR_INVALIDDATA;
2030			}
2031		11560	break;
2032			}
2033		71635	return 0;
2034			}
2035
2036		6	static int decode_2(SANMVideoContext *ctx)
2037			{
2038			int cx, cy, ret;
2039
2040	2/2 ✓ Branch 0 taken 318 times. ✓ Branch 1 taken 5 times.	323	for (cy = 0; cy < ctx->aligned_height; cy += 8)
2041	2/2 ✓ Branch 0 taken 25396 times. ✓ Branch 1 taken 317 times.	25713	for (cx = 0; cx < ctx->aligned_width; cx += 8)
2042	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 25395 times.	25396	if (ret = codec2subblock(ctx, cx, cy, 8))
2043		1	return ret;
2044
2045		5	return 0;
2046			}
2047
2048		✗	static int decode_3(SANMVideoContext *ctx)
2049			{
2050		✗	memcpy(ctx->frm0, ctx->frm2, ctx->frm2_size);
2051		✗	return 0;
2052			}
2053
2054		9	static int decode_4(SANMVideoContext *ctx)
2055			{
2056		9	memcpy(ctx->frm0, ctx->frm1, ctx->frm1_size);
2057		9	return 0;
2058			}
2059
2060		1	static int decode_5(SANMVideoContext *ctx)
2061			{
2062			#if HAVE_BIGENDIAN
2063			uint16_t *frm;
2064			int npixels;
2065			#endif
2066		1	uint8_t *dst = (uint8_t*)ctx->frm0;
2067
2068	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times.	1	if (rle_decode(ctx, &ctx->gb, dst, ctx->buf_size))
2069		✗	return AVERROR_INVALIDDATA;
2070
2071			#if HAVE_BIGENDIAN
2072			npixels = ctx->npixels;
2073			frm = ctx->frm0;
2074			while (npixels--) {
2075			*frm = av_bswap16(*frm);
2076			frm++;
2077			}
2078			#endif
2079
2080		1	return 0;
2081			}
2082
2083		✗	static int decode_6(SANMVideoContext *ctx)
2084			{
2085		✗	int npixels = ctx->npixels;
2086		✗	uint16_t *frm = ctx->frm0;
2087
2088		✗	if (bytestream2_get_bytes_left(&ctx->gb) < npixels) {
2089		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for frame.\n");
2090		✗	return AVERROR_INVALIDDATA;
2091			}
2092		✗	while (npixels--)
2093		✗	*frm++ = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
2094
2095		✗	return 0;
2096			}
2097
2098		✗	static int decode_8(SANMVideoContext *ctx)
2099			{
2100		✗	uint16_t *pdest = ctx->frm0;
2101			uint8_t *rsrc;
2102		✗	long npixels = ctx->npixels;
2103
2104		✗	av_fast_malloc(&ctx->rle_buf, &ctx->rle_buf_size, npixels);
2105		✗	if (!ctx->rle_buf) {
2106		✗	av_log(ctx->avctx, AV_LOG_ERROR, "RLE buffer allocation failed.\n");
2107		✗	return AVERROR(ENOMEM);
2108			}
2109		✗	rsrc = ctx->rle_buf;
2110
2111		✗	if (rle_decode(ctx, &ctx->gb, rsrc, npixels))
2112		✗	return AVERROR_INVALIDDATA;
2113
2114		✗	while (npixels--)
2115		✗	*pdest++ = ctx->codebook[*rsrc++];
2116
2117		✗	return 0;
2118			}
2119
2120			typedef int (*frm_decoder)(SANMVideoContext *ctx);
2121
2122			static const frm_decoder v1_decoders[] = {
2123			decode_0, decode_nop, decode_2, decode_3, decode_4, decode_5,
2124			decode_6, decode_nop, decode_8
2125			};
2126
2127		16	static int read_frame_header(SANMVideoContext *ctx, SANMFrameHeader *hdr)
2128			{
2129			int i, ret;
2130
2131	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 16 times.	16	if ((ret = bytestream2_get_bytes_left(&ctx->gb)) < 560) {
2132		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Input frame too short (%d bytes).\n",
2133			ret);
2134		✗	return AVERROR_INVALIDDATA;
2135			}
2136		16	bytestream2_skip(&ctx->gb, 8); // skip pad
2137
2138		16	hdr->width = bytestream2_get_le32u(&ctx->gb);
2139		16	hdr->height = bytestream2_get_le32u(&ctx->gb);
2140
2141	2/4 ✓ Branch 0 taken 16 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 16 times.	16	if (hdr->width != ctx->width || hdr->height != ctx->height) {
2142		✗	avpriv_report_missing_feature(ctx->avctx, "Variable size frames");
2143		✗	return AVERROR_PATCHWELCOME;
2144			}
2145
2146		16	hdr->seq_num = bytestream2_get_le16u(&ctx->gb);
2147		16	hdr->codec = bytestream2_get_byteu(&ctx->gb);
2148		16	hdr->rotate_code = bytestream2_get_byteu(&ctx->gb);
2149
2150		16	bytestream2_skip(&ctx->gb, 4); // skip pad
2151
2152	2/2 ✓ Branch 0 taken 64 times. ✓ Branch 1 taken 16 times.	80	for (i = 0; i < 4; i++)
2153		64	ctx->small_codebook[i] = bytestream2_get_le16u(&ctx->gb);
2154		16	hdr->bg_color = bytestream2_get_le16u(&ctx->gb);
2155
2156		16	bytestream2_skip(&ctx->gb, 2); // skip pad
2157
2158		16	hdr->rle_output_size = bytestream2_get_le32u(&ctx->gb);
2159	2/2 ✓ Branch 0 taken 4096 times. ✓ Branch 1 taken 16 times.	4112	for (i = 0; i < 256; i++)
2160		4096	ctx->codebook[i] = bytestream2_get_le16u(&ctx->gb);
2161
2162		16	bytestream2_skip(&ctx->gb, 8); // skip pad
2163
2164		16	return 0;
2165			}
2166
2167		2	static void fill_frame(uint16_t *pbuf, int buf_size, uint16_t color)
2168			{
2169	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	2	if (buf_size--) {
2170		2	*pbuf++ = color;
2171		2	av_memcpy_backptr((uint8_t*)pbuf, 2, 2*buf_size);
2172			}
2173		2	}
2174
2175		15	static int copy_output(SANMVideoContext *ctx, SANMFrameHeader *hdr)
2176			{
2177			uint8_t *dst;
2178		15	const uint8_t *src = (uint8_t*) ctx->frm0;
2179		15	int ret, height = ctx->height;
2180	1/2 ✓ Branch 0 taken 15 times. ✗ Branch 1 not taken.	15	ptrdiff_t dstpitch, srcpitch = ctx->pitch * (hdr ? sizeof(ctx->frm0[0]) : 1);
2181
2182	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = ff_get_buffer(ctx->avctx, ctx->frame, 0)) < 0)
2183		✗	return ret;
2184
2185		15	dst = ctx->frame->data[0];
2186		15	dstpitch = ctx->frame->linesize[0];
2187
2188	2/2 ✓ Branch 0 taken 7200 times. ✓ Branch 1 taken 15 times.	7215	while (height--) {
2189		7200	memcpy(dst, src, srcpitch);
2190		7200	src += srcpitch;
2191		7200	dst += dstpitch;
2192			}
2193
2194		15	return 0;
2195			}
2196
2197		16	static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
2198			int *got_frame_ptr, AVPacket *pkt)
2199			{
2200		16	SANMVideoContext *ctx = avctx->priv_data;
2201			int i, ret;
2202
2203		16	ctx->frame = frame;
2204		16	bytestream2_init(&ctx->gb, pkt->data, pkt->size);
2205
2206	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 16 times.	16	if (!ctx->version) {
2207		✗	int to_store = 0, have_img = 0;
2208
2209		✗	ctx->first_fob = 1;
2210
2211		✗	while (bytestream2_get_bytes_left(&ctx->gb) >= 8) {
2212			uint32_t sig, size;
2213			int pos;
2214
2215		✗	sig = bytestream2_get_be32u(&ctx->gb);
2216		✗	size = bytestream2_get_be32u(&ctx->gb);
2217		✗	pos = bytestream2_tell(&ctx->gb);
2218
2219		✗	if (bytestream2_get_bytes_left(&ctx->gb) < size) {
2220		✗	av_log(avctx, AV_LOG_ERROR, "Incorrect chunk size %"PRIu32".\n", size);
2221		✗	break;
2222			}
2223		✗	switch (sig) {
2224		✗	case MKBETAG('N', 'P', 'A', 'L'):
2225		✗	if (size != PALETTE_SIZE * 3) {
2226		✗	av_log(avctx, AV_LOG_ERROR,
2227			"Incorrect palette block size %"PRIu32".\n", size);
2228		✗	return AVERROR_INVALIDDATA;
2229			}
2230		✗	for (i = 0; i < PALETTE_SIZE; i++)
2231		✗	ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb);
2232		✗	if (ctx->subversion < 2)
2233		✗	ctx->pal[0] = 0xFFU << 24;
2234		✗	break;
2235		✗	case MKBETAG('F', 'O', 'B', 'J'):
2236		✗	if (size < 16)
2237		✗	return AVERROR_INVALIDDATA;
2238		✗	if (ret = process_frame_obj(ctx, &ctx->gb))
2239		✗	return ret;
2240		✗	have_img = 1;
2241
2242			/* STOR: for ANIMv0/1 store the whole FOBJ datablock, as it
2243			* needs to be replayed on FTCH, since none of the codecs
2244			* it uses work on the full buffer.
2245			* For ANIMv2, it's enough to store the current framebuffer.
2246			*/
2247		✗	if (to_store) {
2248		✗	to_store = 0;
2249		✗	if (ctx->subversion < 2) {
2250		✗	if (size + 4 <= ctx->stored_frame_size) {
2251		✗	int pos2 = bytestream2_tell(&ctx->gb);
2252		✗	bytestream2_seek(&ctx->gb, pos, SEEK_SET);
2253		✗	*(uint32_t *)(ctx->stored_frame) = size;
2254		✗	bytestream2_get_bufferu(&ctx->gb, ctx->stored_frame + 4, size);
2255		✗	bytestream2_seek(&ctx->gb, pos2, SEEK_SET);
2256			} else {
2257		✗	av_log(avctx, AV_LOG_ERROR, "FOBJ too large for STOR\n");
2258		✗	ret = AVERROR(ENOMEM);
2259			}
2260			} else {
2261		✗	memcpy(ctx->stored_frame, ctx->frm0, ctx->buf_size);
2262			}
2263			}
2264		✗	break;
2265		✗	case MKBETAG('X', 'P', 'A', 'L'):
2266		✗	if (ret = process_xpal(ctx, size))
2267		✗	return ret;
2268		✗	break;
2269		✗	case MKBETAG('S', 'T', 'O', 'R'):
2270		✗	to_store = 1;
2271		✗	break;
2272		✗	case MKBETAG('F', 'T', 'C', 'H'):
2273		✗	if (ctx->subversion < 2) {
2274		✗	if (ret = process_ftch(ctx, size))
2275		✗	return ret;
2276			} else {
2277		✗	memcpy(ctx->frm0, ctx->stored_frame, ctx->buf_size);
2278			}
2279		✗	have_img = 1;
2280		✗	break;
2281		✗	default:
2282		✗	bytestream2_skip(&ctx->gb, size);
2283		✗	av_log(avctx, AV_LOG_DEBUG,
2284			"Unknown/unsupported chunk %"PRIx32".\n", sig);
2285		✗	break;
2286			}
2287
2288			/* the sizes of chunks are usually a multiple of 2. However
2289			* there are a few unaligned FOBJs in RA1 L2PLAY.ANM only (looks
2290			* like a game bug) and IACT audio chunks which have odd sizes
2291			* but are padded with a zero byte.
2292			*/
2293		✗	bytestream2_seek(&ctx->gb, pos + size, SEEK_SET);
2294		✗	if ((pos + size) & 1) {
2295		✗	if (0 != bytestream2_get_byteu(&ctx->gb))
2296		✗	bytestream2_seek(&ctx->gb, pos + size, SEEK_SET);
2297			}
2298			}
2299
2300		✗	if (have_img) {
2301		✗	if ((ret = copy_output(ctx, NULL)))
2302		✗	return ret;
2303		✗	memcpy(ctx->frame->data[1], ctx->pal, 1024);
2304		✗	*got_frame_ptr = 1;
2305			}
2306			} else {
2307			SANMFrameHeader header;
2308
2309	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 16 times.	16	if ((ret = read_frame_header(ctx, &header)))
2310		1	return ret;
2311
2312		16	ctx->rotate_code = header.rotate_code;
2313	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 15 times.	16	if (!header.seq_num) {
2314		1	ctx->frame->flags |= AV_FRAME_FLAG_KEY;
2315		1	ctx->frame->pict_type = AV_PICTURE_TYPE_I;
2316		1	fill_frame(ctx->frm1, ctx->npixels, header.bg_color);
2317		1	fill_frame(ctx->frm2, ctx->npixels, header.bg_color);
2318			} else {
2319		15	ctx->frame->flags &= ~AV_FRAME_FLAG_KEY;
2320		15	ctx->frame->pict_type = AV_PICTURE_TYPE_P;
2321			}
2322
2323	1/2 ✓ Branch 0 taken 16 times. ✗ Branch 1 not taken.	16	if (header.codec < FF_ARRAY_ELEMS(v1_decoders)) {
2324	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 15 times.	16	if ((ret = v1_decoders[header.codec](ctx))) {
2325		1	av_log(avctx, AV_LOG_ERROR,
2326			"Subcodec %d: error decoding frame.\n", header.codec);
2327		1	return ret;
2328			}
2329			} else {
2330		✗	avpriv_request_sample(avctx, "Subcodec %d", header.codec);
2331		✗	return AVERROR_PATCHWELCOME;
2332			}
2333
2334	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = copy_output(ctx, &header)))
2335		✗	return ret;
2336
2337		15	*got_frame_ptr = 1;
2338
2339			}
2340	2/2 ✓ Branch 0 taken 9 times. ✓ Branch 1 taken 6 times.	15	if (ctx->rotate_code)
2341		9	rotate_bufs(ctx, ctx->rotate_code);
2342
2343		15	return pkt->size;
2344			}
2345
2346			const FFCodec ff_sanm_decoder = {
2347			.p.name = "sanm",
2348			CODEC_LONG_NAME("LucasArts SANM/Smush video"),
2349			.p.type = AVMEDIA_TYPE_VIDEO,
2350			.p.id = AV_CODEC_ID_SANM,
2351			.priv_data_size = sizeof(SANMVideoContext),
2352			.init = decode_init,
2353			.close = decode_end,
2354			FF_CODEC_DECODE_CB(decode_frame),
2355			.p.capabilities = AV_CODEC_CAP_DR1,
2356			};
2357