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;
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			} SANMVideoContext;
296
297			typedef struct SANMFrameHeader {
298			int seq_num, codec, rotate_code, rle_output_size;
299
300			uint16_t bg_color;
301			uint32_t width, height;
302			} SANMFrameHeader;
303
304			enum GlyphEdge {
305			LEFT_EDGE,
306			TOP_EDGE,
307			RIGHT_EDGE,
308			BOTTOM_EDGE,
309			NO_EDGE
310			};
311
312			enum GlyphDir {
313			DIR_LEFT,
314			DIR_UP,
315			DIR_RIGHT,
316			DIR_DOWN,
317			NO_DIR
318			};
319
320			/**
321			* Return enum GlyphEdge of box where point (x, y) lies.
322			*
323			* @param x x point coordinate
324			* @param y y point coordinate
325			* @param edge_size box width/height.
326			*/
327		1632	static enum GlyphEdge which_edge(int x, int y, int edge_size)
328			{
329		1632	const int edge_max = edge_size - 1;
330
331	2/2 ✓ Branch 0 taken 408 times. ✓ Branch 1 taken 1224 times.	1632	if (!y)
332		408	return BOTTOM_EDGE;
333	2/2 ✓ Branch 0 taken 408 times. ✓ Branch 1 taken 816 times.	1224	else if (y == edge_max)
334		408	return TOP_EDGE;
335	2/2 ✓ Branch 0 taken 306 times. ✓ Branch 1 taken 510 times.	816	else if (!x)
336		306	return LEFT_EDGE;
337	2/2 ✓ Branch 0 taken 306 times. ✓ Branch 1 taken 204 times.	510	else if (x == edge_max)
338		306	return RIGHT_EDGE;
339			else
340		204	return NO_EDGE;
341			}
342
343		1536	static enum GlyphDir which_direction(enum GlyphEdge edge0, enum GlyphEdge edge1)
344			{
345	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) ||
346	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) ||
347	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) ||
348	2/2 ✓ Branch 0 taken 192 times. ✓ Branch 1 taken 96 times.	288	(edge1 == BOTTOM_EDGE && edge0 != TOP_EDGE))
349		600	return DIR_UP;
350	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) ||
351	2/2 ✓ Branch 0 taken 192 times. ✓ Branch 1 taken 96 times.	288	(edge1 == TOP_EDGE && edge0 != BOTTOM_EDGE))
352		480	return DIR_DOWN;
353	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) ||
354	1/2 ✓ Branch 0 taken 24 times. ✗ Branch 1 not taken.	24	(edge1 == LEFT_EDGE && edge0 != RIGHT_EDGE))
355		108	return DIR_LEFT;
356	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) ||
357	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) ||
358	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) ||
359	1/2 ✓ Branch 0 taken 24 times. ✗ Branch 1 not taken.	24	(edge1 == RIGHT_EDGE && edge0 != LEFT_EDGE))
360		300	return DIR_RIGHT;
361
362		48	return NO_DIR;
363			}
364
365			/* Interpolate two points. */
366		6600	static void interp_point(int8_t *points, int x0, int y0, int x1, int y1,
367			int pos, int npoints)
368			{
369	2/2 ✓ Branch 0 taken 6504 times. ✓ Branch 1 taken 96 times.	6600	if (npoints) {
370		6504	points[0] = (x0 * pos + x1 * (npoints - pos) + (npoints >> 1)) / npoints;
371		6504	points[1] = (y0 * pos + y1 * (npoints - pos) + (npoints >> 1)) / npoints;
372			} else {
373		96	points[0] = x0;
374		96	points[1] = y0;
375			}
376		6600	}
377
378			/**
379			* Construct glyphs by iterating through vector coordinates.
380			*
381			* @param pglyphs pointer to table where glyphs are stored
382			* @param xvec pointer to x component of vector coordinates
383			* @param yvec pointer to y component of vector coordinates
384			* @param side_length glyph width/height.
385			*/
386		6	static void make_glyphs(int8_t *pglyphs, const int8_t *xvec, const int8_t *yvec,
387			const int side_length)
388			{
389		6	const int glyph_size = side_length * side_length;
390		6	int8_t *pglyph = pglyphs;
391
392			int i, j;
393	2/2 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 6 times.	102	for (i = 0; i < GLYPH_COORD_VECT_SIZE; i++) {
394		96	int x0 = xvec[i];
395		96	int y0 = yvec[i];
396		96	enum GlyphEdge edge0 = which_edge(x0, y0, side_length);
397
398	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) {
399		1536	int x1 = xvec[j];
400		1536	int y1 = yvec[j];
401		1536	enum GlyphEdge edge1 = which_edge(x1, y1, side_length);
402		1536	enum GlyphDir dir = which_direction(edge0, edge1);
403		1536	int npoints = FFMAX(FFABS(x1 - x0), FFABS(y1 - y0));
404			int ipoint;
405
406	2/2 ✓ Branch 0 taken 6600 times. ✓ Branch 1 taken 1536 times.	8136	for (ipoint = 0; ipoint <= npoints; ipoint++) {
407			int8_t point[2];
408			int irow, icol;
409
410		6600	interp_point(point, x0, y0, x1, y1, ipoint, npoints);
411
412	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) {
413		2832	case DIR_UP:
414	2/2 ✓ Branch 0 taken 8232 times. ✓ Branch 1 taken 2832 times.	11064	for (irow = point[1]; irow >= 0; irow--)
415		8232	pglyph[point[0] + irow * side_length] = 1;
416		2832	break;
417
418		1968	case DIR_DOWN:
419	2/2 ✓ Branch 0 taken 4500 times. ✓ Branch 1 taken 1968 times.	6468	for (irow = point[1]; irow < side_length; irow++)
420		4500	pglyph[point[0] + irow * side_length] = 1;
421		1968	break;
422
423		282	case DIR_LEFT:
424	2/2 ✓ Branch 0 taken 378 times. ✓ Branch 1 taken 282 times.	660	for (icol = point[0]; icol >= 0; icol--)
425		378	pglyph[icol + point[1] * side_length] = 1;
426		282	break;
427
428		1434	case DIR_RIGHT:
429	2/2 ✓ Branch 0 taken 4794 times. ✓ Branch 1 taken 1434 times.	6228	for (icol = point[0]; icol < side_length; icol++)
430		4794	pglyph[icol + point[1] * side_length] = 1;
431		1434	break;
432			}
433			}
434			}
435			}
436		6	}
437
438		6	static void init_sizes(SANMVideoContext *ctx, int width, int height)
439			{
440		6	ctx->width = width;
441		6	ctx->height = height;
442		6	ctx->npixels = width * height;
443
444		6	ctx->aligned_width = FFALIGN(width, 8);
445		6	ctx->aligned_height = FFALIGN(height, 8);
446
447		6	ctx->buf_size = ctx->aligned_width * ctx->aligned_height * sizeof(ctx->frm0[0]);
448		6	ctx->pitch = width;
449		6	}
450
451		3	static void destroy_buffers(SANMVideoContext *ctx)
452			{
453		3	av_freep(&ctx->frm0);
454		3	av_freep(&ctx->frm1);
455		3	av_freep(&ctx->frm2);
456		3	av_freep(&ctx->stored_frame);
457		3	av_freep(&ctx->rle_buf);
458		3	ctx->frm0_size =
459		3	ctx->frm1_size =
460		3	ctx->frm2_size = 0;
461		3	init_sizes(ctx, 0, 0);
462		3	}
463
464		3	static av_cold int init_buffers(SANMVideoContext *ctx)
465			{
466		3	av_fast_padded_mallocz(&ctx->frm0, &ctx->frm0_size, ctx->buf_size);
467		3	av_fast_padded_mallocz(&ctx->frm1, &ctx->frm1_size, ctx->buf_size);
468		3	av_fast_padded_mallocz(&ctx->frm2, &ctx->frm2_size, ctx->buf_size);
469	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	if (!ctx->version)
470		✗	av_fast_padded_mallocz(&ctx->stored_frame,
471		✗	&ctx->stored_frame_size, ctx->buf_size);
472
473	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 ||
474	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)) {
475		✗	destroy_buffers(ctx);
476		✗	return AVERROR(ENOMEM);
477			}
478
479		3	return 0;
480			}
481
482		9	static void rotate_bufs(SANMVideoContext *ctx, int rotate_code)
483			{
484	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 8 times.	9	if (rotate_code == 2)
485		1	FFSWAP(uint16_t*, ctx->frm1, ctx->frm2);
486		9	FFSWAP(uint16_t*, ctx->frm2, ctx->frm0);
487		9	}
488
489		3	static av_cold int decode_init(AVCodecContext *avctx)
490			{
491		3	SANMVideoContext *ctx = avctx->priv_data;
492
493		3	ctx->avctx = avctx;
494		3	ctx->version = !avctx->extradata_size;
495			// early sanity check before allocations to avoid need for deallocation code.
496	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) {
497		✗	av_log(avctx, AV_LOG_ERROR, "Not enough extradata.\n");
498		✗	return AVERROR_INVALIDDATA;
499			}
500
501	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;
502
503		3	init_sizes(ctx, avctx->width, avctx->height);
504	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3 times.	3	if (init_buffers(ctx)) {
505		✗	av_log(avctx, AV_LOG_ERROR, "Error allocating buffers.\n");
506		✗	return AVERROR(ENOMEM);
507			}
508
509		3	make_glyphs(ctx->p4x4glyphs[0], glyph4_x, glyph4_y, 4);
510		3	make_glyphs(ctx->p8x8glyphs[0], glyph8_x, glyph8_y, 8);
511
512	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	if (!ctx->version) {
513			int i;
514
515		✗	ctx->subversion = AV_RL16(avctx->extradata);
516		✗	for (i = 0; i < PALETTE_SIZE; i++)
517		✗	ctx->pal[i] = 0xFFU << 24 | AV_RL32(avctx->extradata + 2 + i * 4);
518			}
519
520		3	return 0;
521			}
522
523		3	static av_cold int decode_end(AVCodecContext *avctx)
524			{
525		3	SANMVideoContext *ctx = avctx->priv_data;
526
527		3	destroy_buffers(ctx);
528
529		3	return 0;
530			}
531
532		1	static int rle_decode(SANMVideoContext *ctx, uint8_t *dst, const int out_size)
533			{
534		1	int opcode, color, run_len, left = out_size;
535
536	2/2 ✓ Branch 0 taken 4800 times. ✓ Branch 1 taken 1 times.	4801	while (left > 0) {
537		4800	opcode = bytestream2_get_byte(&ctx->gb);
538		4800	run_len = (opcode >> 1) + 1;
539	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(&ctx->gb) <= 0)
540		✗	return AVERROR_INVALIDDATA;
541
542	1/2 ✓ Branch 0 taken 4800 times. ✗ Branch 1 not taken.	4800	if (opcode & 1) {
543		4800	color = bytestream2_get_byte(&ctx->gb);
544		4800	memset(dst, color, run_len);
545			} else {
546		✗	if (bytestream2_get_bytes_left(&ctx->gb) < run_len)
547		✗	return AVERROR_INVALIDDATA;
548		✗	bytestream2_get_bufferu(&ctx->gb, dst, run_len);
549			}
550
551		4800	dst += run_len;
552		4800	left -= run_len;
553			}
554
555		1	return 0;
556			}
557
558		✗	static int old_codec1(SANMVideoContext *ctx, int top,
559			int left, int width, int height)
560			{
561		✗	uint8_t *dst = ((uint8_t *)ctx->frm0) + left + top * ctx->pitch;
562			int i, j, len, flag, code, val, pos, end;
563
564		✗	for (i = 0; i < height; i++) {
565		✗	pos = 0;
566
567		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
568		✗	return AVERROR_INVALIDDATA;
569
570		✗	len = bytestream2_get_le16u(&ctx->gb);
571		✗	end = bytestream2_tell(&ctx->gb) + len;
572
573		✗	while (bytestream2_tell(&ctx->gb) < end) {
574		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
575		✗	return AVERROR_INVALIDDATA;
576
577		✗	code = bytestream2_get_byteu(&ctx->gb);
578		✗	flag = code & 1;
579		✗	code = (code >> 1) + 1;
580		✗	if (pos + code > width)
581		✗	return AVERROR_INVALIDDATA;
582		✗	if (flag) {
583		✗	val = bytestream2_get_byteu(&ctx->gb);
584		✗	if (val)
585		✗	memset(dst + pos, val, code);
586		✗	pos += code;
587			} else {
588		✗	if (bytestream2_get_bytes_left(&ctx->gb) < code)
589		✗	return AVERROR_INVALIDDATA;
590		✗	for (j = 0; j < code; j++) {
591		✗	val = bytestream2_get_byteu(&ctx->gb);
592		✗	if (val)
593		✗	dst[pos] = val;
594		✗	pos++;
595			}
596			}
597			}
598		✗	dst += ctx->pitch;
599			}
600		✗	ctx->rotate_code = 0;
601
602		✗	return 0;
603			}
604
605		✗	static inline void codec37_mv(uint8_t *dst, const uint8_t *src,
606			int height, int stride, int x, int y)
607			{
608			int pos, i, j;
609
610		✗	pos = x + y * stride;
611		✗	for (j = 0; j < 4; j++) {
612		✗	for (i = 0; i < 4; i++) {
613		✗	if ((pos + i) < 0 || (pos + i) >= height * stride)
614		✗	dst[i] = 0;
615			else
616		✗	dst[i] = src[i];
617			}
618		✗	dst += stride;
619		✗	src += stride;
620		✗	pos += stride;
621			}
622		✗	}
623
624		✗	static int old_codec37(SANMVideoContext *ctx, int top,
625			int left, int width, int height)
626			{
627			int i, j, k, l, t, run, len, code, skip, mx, my;
628		✗	ptrdiff_t stride = ctx->pitch;
629			uint8_t *dst, *prev;
630		✗	int skip_run = 0;
631		✗	int compr = bytestream2_get_byte(&ctx->gb);
632		✗	int mvoff = bytestream2_get_byte(&ctx->gb);
633		✗	int seq = bytestream2_get_le16(&ctx->gb);
634		✗	uint32_t decoded_size = bytestream2_get_le32(&ctx->gb);
635			int flags;
636
637		✗	bytestream2_skip(&ctx->gb, 4);
638		✗	flags = bytestream2_get_byte(&ctx->gb);
639		✗	bytestream2_skip(&ctx->gb, 3);
640
641		✗	if (decoded_size > ctx->height * stride - left - top * stride) {
642		✗	decoded_size = ctx->height * stride - left - top * stride;
643		✗	av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n");
644			}
645
646		✗	ctx->rotate_code = 0;
647
648		✗	if (((seq & 1) || !(flags & 1)) && (compr && compr != 2))
649		✗	rotate_bufs(ctx, 1);
650
651		✗	dst = ((uint8_t*)ctx->frm0) + left + top * stride;
652		✗	prev = ((uint8_t*)ctx->frm2) + left + top * stride;
653
654		✗	if (mvoff > 2) {
655		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Invalid motion base value %d.\n", mvoff);
656		✗	return AVERROR_INVALIDDATA;
657			}
658
659		✗	switch (compr) {
660		✗	case 0:
661		✗	for (i = 0; i < height; i++) {
662		✗	bytestream2_get_buffer(&ctx->gb, dst, width);
663		✗	dst += stride;
664			}
665		✗	memset(ctx->frm1, 0, ctx->height * stride);
666		✗	memset(ctx->frm2, 0, ctx->height * stride);
667		✗	break;
668		✗	case 1:
669		✗	run = 0;
670		✗	len = -1;
671		✗	code = 0;
672
673		✗	for (j = 0; j < height; j += 4) {
674		✗	for (i = 0; i < width; i += 4) {
675		✗	if (len < 0) {
676		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
677		✗	return AVERROR_INVALIDDATA;
678		✗	code = bytestream2_get_byte(&ctx->gb);
679		✗	len = code >> 1;
680		✗	run = code & 1;
681		✗	skip = 0;
682			} else {
683		✗	skip = run;
684			}
685
686		✗	if (!skip) {
687		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
688		✗	return AVERROR_INVALIDDATA;
689		✗	code = bytestream2_get_byte(&ctx->gb);
690		✗	if (code == 0xff) {
691		✗	len--;
692		✗	for (k = 0; k < 4; k++) {
693		✗	for (l = 0; l < 4; l++) {
694		✗	if (len < 0) {
695		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
696		✗	return AVERROR_INVALIDDATA;
697		✗	code = bytestream2_get_byte(&ctx->gb);
698		✗	len = code >> 1;
699		✗	run = code & 1;
700		✗	if (run) {
701		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
702		✗	return AVERROR_INVALIDDATA;
703		✗	code = bytestream2_get_byte(&ctx->gb);
704			}
705			}
706		✗	if (!run) {
707		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
708		✗	return AVERROR_INVALIDDATA;
709		✗	code = bytestream2_get_byte(&ctx->gb);
710			}
711		✗	*(dst + i + (k * stride) + l) = code;
712		✗	len--;
713			}
714			}
715		✗	continue;
716			}
717			}
718			/* 4x4 block copy from prev with MV */
719		✗	mx = c37_mv[(mvoff * 255 + code) * 2];
720		✗	my = c37_mv[(mvoff * 255 + code) * 2 + 1];
721		✗	codec37_mv(dst + i, prev + i + mx + my * stride,
722			ctx->height, stride, i + mx, j + my);
723		✗	len--;
724			}
725		✗	dst += stride * 4;
726		✗	prev += stride * 4;
727			}
728		✗	break;
729		✗	case 2:
730		✗	if (rle_decode(ctx, dst, decoded_size))
731		✗	return AVERROR_INVALIDDATA;
732		✗	memset(ctx->frm1, 0, ctx->frm1_size);
733		✗	memset(ctx->frm2, 0, ctx->frm2_size);
734		✗	break;
735		✗	case 3:
736			case 4:
737		✗	for (j = 0; j < height; j += 4) {
738		✗	for (i = 0; i < width; i += 4) {
739			int code;
740		✗	if (skip_run) {
741		✗	skip_run--;
742		✗	copy_block4(dst + i, prev + i, stride, stride, 4);
743		✗	continue;
744			}
745		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
746		✗	return AVERROR_INVALIDDATA;
747		✗	code = bytestream2_get_byteu(&ctx->gb);
748		✗	if (code == 0xFF) {
749		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
750		✗	return AVERROR_INVALIDDATA;
751		✗	for (k = 0; k < 4; k++)
752		✗	bytestream2_get_bufferu(&ctx->gb, dst + i + k * stride, 4);
753		✗	} else if ((flags & 4) && (code == 0xFE)) {
754		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
755		✗	return AVERROR_INVALIDDATA;
756		✗	for (k = 0; k < 4; k++)
757		✗	memset(dst + i + k * stride, bytestream2_get_byteu(&ctx->gb), 4);
758		✗	} else if ((flags & 4) && (code == 0xFD)) {
759		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
760		✗	return AVERROR_INVALIDDATA;
761		✗	t = bytestream2_get_byteu(&ctx->gb);
762		✗	for (k = 0; k < 4; k++)
763		✗	memset(dst + i + k * stride, t, 4);
764		✗	} else if ((compr == 4) && (code == 0)) {
765		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
766		✗	return AVERROR_INVALIDDATA;
767		✗	skip_run = bytestream2_get_byteu(&ctx->gb) + 1;
768		✗	i -= 4;
769			} else {
770		✗	mx = c37_mv[(mvoff * 255 + code) * 2];
771		✗	my = c37_mv[(mvoff * 255 + code) * 2 + 1];
772		✗	codec37_mv(dst + i, prev + i + mx + my * stride,
773			ctx->height, stride, i + mx, j + my);
774			}
775			}
776		✗	dst += stride * 4;
777		✗	prev += stride * 4;
778			}
779		✗	break;
780		✗	default:
781		✗	avpriv_report_missing_feature(ctx->avctx,
782			"Subcodec 37 compression %d", compr);
783		✗	return AVERROR_PATCHWELCOME;
784			}
785
786		✗	return 0;
787			}
788
789		✗	static int process_block(SANMVideoContext *ctx, uint8_t *dst, uint8_t *prev1,
790			uint8_t *prev2, int stride, int tbl, int size)
791			{
792			int code, k, t;
793			uint8_t colors[2];
794			int8_t *pglyph;
795
796		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
797		✗	return AVERROR_INVALIDDATA;
798
799		✗	code = bytestream2_get_byteu(&ctx->gb);
800		✗	if (code >= 0xF8) {
801		✗	switch (code) {
802		✗	case 0xFF:
803		✗	if (size == 2) {
804		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
805		✗	return AVERROR_INVALIDDATA;
806		✗	dst[0] = bytestream2_get_byteu(&ctx->gb);
807		✗	dst[1] = bytestream2_get_byteu(&ctx->gb);
808		✗	dst[0 + stride] = bytestream2_get_byteu(&ctx->gb);
809		✗	dst[1 + stride] = bytestream2_get_byteu(&ctx->gb);
810			} else {
811		✗	size >>= 1;
812		✗	if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))
813		✗	return AVERROR_INVALIDDATA;
814		✗	if (process_block(ctx, dst + size, prev1 + size, prev2 + size,
815			stride, tbl, size))
816		✗	return AVERROR_INVALIDDATA;
817		✗	dst += size * stride;
818		✗	prev1 += size * stride;
819		✗	prev2 += size * stride;
820		✗	if (process_block(ctx, dst, prev1, prev2, stride, tbl, size))
821		✗	return AVERROR_INVALIDDATA;
822		✗	if (process_block(ctx, dst + size, prev1 + size, prev2 + size,
823			stride, tbl, size))
824		✗	return AVERROR_INVALIDDATA;
825			}
826		✗	break;
827		✗	case 0xFE:
828		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
829		✗	return AVERROR_INVALIDDATA;
830
831		✗	t = bytestream2_get_byteu(&ctx->gb);
832		✗	for (k = 0; k < size; k++)
833		✗	memset(dst + k * stride, t, size);
834		✗	break;
835		✗	case 0xFD:
836		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 3)
837		✗	return AVERROR_INVALIDDATA;
838
839		✗	code = bytestream2_get_byteu(&ctx->gb);
840		✗	pglyph = (size == 8) ? ctx->p8x8glyphs[code] : ctx->p4x4glyphs[code];
841		✗	bytestream2_get_bufferu(&ctx->gb, colors, 2);
842
843		✗	for (k = 0; k < size; k++)
844		✗	for (t = 0; t < size; t++)
845		✗	dst[t + k * stride] = colors[!*pglyph++];
846		✗	break;
847		✗	case 0xFC:
848		✗	for (k = 0; k < size; k++)
849		✗	memcpy(dst + k * stride, prev1 + k * stride, size);
850		✗	break;
851		✗	default:
852		✗	k = bytestream2_tell(&ctx->gb);
853		✗	bytestream2_seek(&ctx->gb, tbl + (code & 7), SEEK_SET);
854		✗	t = bytestream2_get_byte(&ctx->gb);
855		✗	bytestream2_seek(&ctx->gb, k, SEEK_SET);
856		✗	for (k = 0; k < size; k++)
857		✗	memset(dst + k * stride, t, size);
858			}
859			} else {
860		✗	int mx = motion_vectors[code][0];
861		✗	int my = motion_vectors[code][1];
862		✗	int index = prev2 - (const uint8_t *)ctx->frm2;
863
864			av_assert2(index >= 0 && index < (ctx->buf_size >> 1));
865
866		✗	if (index < -mx - my * stride ||
867		✗	(ctx->buf_size >> 1) - index < mx + size + (my + size - 1) * stride) {
868		✗	av_log(ctx->avctx, AV_LOG_ERROR, "MV is invalid.\n");
869		✗	return AVERROR_INVALIDDATA;
870			}
871
872		✗	for (k = 0; k < size; k++)
873		✗	memcpy(dst + k * stride, prev2 + mx + (my + k) * stride, size);
874			}
875
876		✗	return 0;
877			}
878
879		✗	static void codec47_read_interptable(SANMVideoContext *ctx)
880			{
881		✗	uint8_t *p1, *p2, *itbl = ctx->c47itbl;
882			int i, j;
883
884		✗	for (i = 0; i < 256; i++) {
885		✗	p1 = p2 = itbl + i;
886		✗	for (j = 256 - i; j; j--) {
887		✗	*p1 = *p2 = bytestream2_get_byte(&ctx->gb);
888		✗	p1 += 1;
889		✗	p2 += 256;
890			}
891		✗	itbl += 256;
892			}
893		✗	}
894
895		✗	static void codec47_comp1(SANMVideoContext *ctx, uint8_t *dst_in, int width,
896			int height, ptrdiff_t stride)
897			{
898		✗	uint8_t p1, *dst, *itbl = ctx->c47itbl;
899			uint16_t px;
900			int i, j;
901
902		✗	dst = dst_in + stride;
903		✗	for (i = 0; i < height; i += 2) {
904		✗	p1 = bytestream2_get_byte(&ctx->gb);
905		✗	*dst++ = p1;
906		✗	*dst++ = p1;
907		✗	px = p1;
908		✗	for (j = 2; j < width; j += 2) {
909		✗	p1 = bytestream2_get_byte(&ctx->gb);
910		✗	px = (px << 8) | p1;
911		✗	*dst++ = itbl[px];
912		✗	*dst++ = p1;
913			}
914		✗	dst += stride;
915			}
916
917		✗	memcpy(dst_in, dst_in + stride, width);
918		✗	dst = dst_in + stride + stride;
919		✗	for (i = 2; i < height - 1; i += 2) {
920		✗	for (j = 0; j < width; j++) {
921		✗	px = (*(dst - stride) << 8) | *(dst + stride);
922		✗	*dst++ = itbl[px];
923			}
924		✗	dst += stride;
925			}
926		✗	}
927
928		✗	static int old_codec47(SANMVideoContext *ctx, int top,
929			int left, int width, int height)
930			{
931			uint32_t decoded_size;
932			int i, j;
933		✗	ptrdiff_t stride = ctx->pitch;
934		✗	uint8_t *dst = (uint8_t *)ctx->frm0 + left + top * stride;
935		✗	uint8_t *prev1 = (uint8_t *)ctx->frm1 + left + top * stride;
936		✗	uint8_t *prev2 = (uint8_t *)ctx->frm2 + left + top * stride;
937			uint8_t auxcol[2];
938		✗	int tbl_pos = bytestream2_tell(&ctx->gb);
939		✗	int seq = bytestream2_get_le16(&ctx->gb);
940		✗	int compr = bytestream2_get_byte(&ctx->gb);
941		✗	int new_rot = bytestream2_get_byte(&ctx->gb);
942		✗	int skip = bytestream2_get_byte(&ctx->gb);
943
944		✗	bytestream2_skip(&ctx->gb, 7);
945		✗	auxcol[0] = bytestream2_get_byteu(&ctx->gb);
946		✗	auxcol[1] = bytestream2_get_byteu(&ctx->gb);
947		✗	decoded_size = bytestream2_get_le32(&ctx->gb);
948		✗	bytestream2_skip(&ctx->gb, 8);
949
950		✗	if (decoded_size > ctx->height * stride - left - top * stride) {
951		✗	decoded_size = ctx->height * stride - left - top * stride;
952		✗	av_log(ctx->avctx, AV_LOG_WARNING, "Decoded size is too large.\n");
953			}
954
955		✗	if (skip & 1) {
956		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 0x8080)
957		✗	return AVERROR_INVALIDDATA;
958		✗	codec47_read_interptable(ctx);
959			}
960		✗	if (!seq) {
961		✗	ctx->prev_seq = -1;
962		✗	memset(prev1, auxcol[0], (ctx->height - top) * stride);
963		✗	memset(prev2, auxcol[1], (ctx->height - top) * stride);
964			}
965
966		✗	switch (compr) {
967		✗	case 0:
968		✗	if (bytestream2_get_bytes_left(&ctx->gb) < width * height)
969		✗	return AVERROR_INVALIDDATA;
970		✗	for (j = 0; j < height; j++) {
971		✗	bytestream2_get_bufferu(&ctx->gb, dst, width);
972		✗	dst += stride;
973			}
974		✗	break;
975		✗	case 1:
976		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ((width + 1) >> 1) * ((height + 1) >> 1))
977		✗	return AVERROR_INVALIDDATA;
978		✗	codec47_comp1(ctx, dst, width, height, stride);
979		✗	break;
980		✗	case 2:
981		✗	if (seq == ctx->prev_seq + 1) {
982		✗	for (j = 0; j < height; j += 8) {
983		✗	for (i = 0; i < width; i += 8)
984		✗	if (process_block(ctx, dst + i, prev1 + i, prev2 + i, stride,
985			tbl_pos + 8, 8))
986		✗	return AVERROR_INVALIDDATA;
987		✗	dst += stride * 8;
988		✗	prev1 += stride * 8;
989		✗	prev2 += stride * 8;
990			}
991			}
992		✗	break;
993		✗	case 3:
994		✗	memcpy(ctx->frm0, ctx->frm2, ctx->pitch * ctx->height);
995		✗	break;
996		✗	case 4:
997		✗	memcpy(ctx->frm0, ctx->frm1, ctx->pitch * ctx->height);
998		✗	break;
999		✗	case 5:
1000		✗	if (rle_decode(ctx, dst, decoded_size))
1001		✗	return AVERROR_INVALIDDATA;
1002		✗	break;
1003		✗	default:
1004		✗	avpriv_report_missing_feature(ctx->avctx,
1005			"Subcodec 47 compression %d", compr);
1006		✗	return AVERROR_PATCHWELCOME;
1007			}
1008		✗	if (seq == ctx->prev_seq + 1)
1009		✗	ctx->rotate_code = new_rot;
1010			else
1011		✗	ctx->rotate_code = 0;
1012		✗	ctx->prev_seq = seq;
1013
1014		✗	return 0;
1015			}
1016
1017			// scale 4x4 input block to an 8x8 output block
1018		✗	static void c48_4to8(uint8_t *dst, const uint8_t *src, const uint16_t w)
1019			{
1020			uint16_t p;
1021			// dst is always at least 16bit aligned
1022		✗	for (int i = 0; i < 4; i++) {
1023		✗	for (int j = 0; j < 8; j += 2) {
1024		✗	p = *src++;
1025		✗	p = (p << 8) | p;
1026		✗	*((uint16_t *)(dst + w * 0 + j)) = p;
1027		✗	*((uint16_t *)(dst + w * 1 + j)) = p;
1028			}
1029		✗	dst += w * 2;
1030			}
1031		✗	}
1032
1033		✗	static int codec48_block(SANMVideoContext *ctx, uint8_t *dst, uint8_t *db,
1034			const uint16_t w)
1035			{
1036			uint8_t opc, sb[16];
1037			int i, j, k, l;
1038			int16_t mvofs;
1039			uint32_t ofs;
1040
1041		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1042		✗	return 1;
1043
1044		✗	opc = bytestream2_get_byteu(&ctx->gb);
1045		✗	switch (opc) {
1046		✗	case 0xFF: // 1x1 -> 8x8 block scale
1047		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1048		✗	return 1;
1049
1050		✗	opc = bytestream2_get_byteu(&ctx->gb);
1051		✗	for (i = 0; i < 16; i++)
1052		✗	sb[i] = opc;
1053		✗	c48_4to8(dst, sb, w);
1054		✗	break;
1055		✗	case 0xFE: // 1x 8x8 copy from deltabuf, 16bit mv from source
1056		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
1057		✗	return 1;
1058		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1059		✗	for (i = 0; i < 8; i++) {
1060		✗	ofs = w * i;
1061		✗	for (k = 0; k < 8; k++)
1062		✗	*(dst + ofs + k) = *(db + ofs + k + mvofs);
1063			}
1064		✗	break;
1065		✗	case 0xFD: // 2x2 -> 8x8 block scale
1066		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1067		✗	return 1;
1068		✗	sb[ 5] = bytestream2_get_byteu(&ctx->gb);
1069		✗	sb[ 7] = bytestream2_get_byteu(&ctx->gb);
1070		✗	sb[13] = bytestream2_get_byteu(&ctx->gb);
1071		✗	sb[15] = bytestream2_get_byteu(&ctx->gb);
1072
1073		✗	sb[0] = sb[1] = sb[4] = sb[5];
1074		✗	sb[2] = sb[3] = sb[6] = sb[7];
1075		✗	sb[8] = sb[9] = sb[12] = sb[13];
1076		✗	sb[10] = sb[11] = sb[14] = sb[15];
1077		✗	c48_4to8(dst, sb, w);
1078		✗	break;
1079		✗	case 0xFC: // 4x copy 4x4 block, per-block c37_mv from source
1080		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1081		✗	return 1;
1082		✗	for (i = 0; i < 8; i += 4) {
1083		✗	for (k = 0; k < 8; k += 4) {
1084		✗	opc = bytestream2_get_byteu(&ctx->gb);
1085		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1086		✗	for (j = 0; j < 4; j++) {
1087		✗	ofs = (w * (j + i)) + k;
1088		✗	for (l = 0; l < 4; l++)
1089		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1090			}
1091			}
1092			}
1093		✗	break;
1094		✗	case 0xFB: // Copy 4x 4x4 blocks, per-block mv from source
1095		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 8)
1096		✗	return 1;
1097		✗	for (i = 0; i < 8; i += 4) {
1098		✗	for (k = 0; k < 8; k += 4) {
1099		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1100		✗	for (j = 0; j < 4; j++) {
1101		✗	ofs = (w * (j + i)) + k;
1102		✗	for (l = 0; l < 4; l++)
1103		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1104			}
1105			}
1106			}
1107		✗	break;
1108		✗	case 0xFA: // scale 4x4 input block to 8x8 dest block
1109		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
1110		✗	return 1;
1111		✗	bytestream2_get_bufferu(&ctx->gb, sb, 16);
1112		✗	c48_4to8(dst, sb, w);
1113		✗	break;
1114		✗	case 0xF9: // 16x 2x2 copy from delta, per-block c37_mv from source
1115		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 16)
1116		✗	return 1;
1117		✗	for (i = 0; i < 8; i += 2) {
1118		✗	for (j = 0; j < 8; j += 2) {
1119		✗	ofs = (w * i) + j;
1120		✗	opc = bytestream2_get_byteu(&ctx->gb);
1121		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1122		✗	for (l = 0; l < 2; l++) {
1123		✗	*(dst + ofs + l + 0) = *(db + ofs + l + 0 + mvofs);
1124		✗	*(dst + ofs + l + w) = *(db + ofs + l + w + mvofs);
1125			}
1126			}
1127			}
1128		✗	break;
1129		✗	case 0xF8: // 16x 2x2 blocks copy, 16bit mv from source
1130		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 32)
1131		✗	return 1;
1132		✗	for (i = 0; i < 8; i += 2) {
1133		✗	for (j = 0; j < 8; j += 2) {
1134		✗	ofs = w * i + j;
1135		✗	mvofs = bytestream2_get_le16(&ctx->gb);
1136		✗	for (l = 0; l < 2; l++) {
1137		✗	*(dst + ofs + l + 0) = *(db + ofs + l + 0 + mvofs);
1138		✗	*(dst + ofs + l + w) = *(db + ofs + l + w + mvofs);
1139			}
1140			}
1141			}
1142		✗	break;
1143		✗	case 0xF7: // copy 8x8 block from src to dest
1144		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 64)
1145		✗	return 1;
1146		✗	for (i = 0; i < 8; i++) {
1147		✗	ofs = i * w;
1148		✗	for (l = 0; l < 8; l++)
1149		✗	*(dst + ofs + l) = bytestream2_get_byteu(&ctx->gb);
1150			}
1151		✗	break;
1152		✗	default: // copy 8x8 block from prev, c37_mv from source
1153		✗	mvofs = c37_mv[opc * 2] + (c37_mv[opc * 2 + 1] * w);
1154		✗	for (i = 0; i < 8; i++) {
1155		✗	ofs = i * w;
1156		✗	for (l = 0; l < 8; l++)
1157		✗	*(dst + ofs + l) = *(db + ofs + l + mvofs);
1158			}
1159		✗	break;
1160			}
1161		✗	return 0;
1162			}
1163
1164		✗	static int old_codec48(SANMVideoContext *ctx, int width, int height)
1165			{
1166			uint8_t *dst, *prev;
1167		✗	int compr = bytestream2_get_byte(&ctx->gb);
1168		✗	int mvidx = bytestream2_get_byte(&ctx->gb);
1169		✗	int seq = bytestream2_get_le16(&ctx->gb);
1170		✗	uint32_t decoded_size = bytestream2_get_le32(&ctx->gb);
1171			int i, j, flags;
1172
1173			// all codec48 videos use 1, but just to be safe...
1174		✗	if (mvidx != 1) {
1175		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Invalid motion base value %d.\n", mvidx);
1176		✗	return AVERROR_INVALIDDATA;
1177			}
1178
1179		✗	bytestream2_skip(&ctx->gb, 4);
1180		✗	flags = bytestream2_get_byte(&ctx->gb);
1181		✗	bytestream2_skip(&ctx->gb, 3);
1182
1183		✗	if (flags & 8) {
1184		✗	if (bytestream2_get_bytes_left(&ctx->gb) < 0x8080)
1185		✗	return AVERROR_INVALIDDATA;
1186		✗	codec47_read_interptable(ctx);
1187			}
1188
1189		✗	dst = (uint8_t*)ctx->frm0;
1190		✗	prev = (uint8_t*)ctx->frm2;
1191
1192		✗	if (!seq) {
1193		✗	ctx->prev_seq = -1;
1194		✗	memset(prev, 0, ctx->aligned_height * width);
1195			}
1196
1197		✗	switch (compr) {
1198		✗	case 0:
1199		✗	if (bytestream2_get_bytes_left(&ctx->gb) < width * height)
1200		✗	return AVERROR_INVALIDDATA;
1201		✗	for (j = 0; j < height; j++) {
1202		✗	bytestream2_get_bufferu(&ctx->gb, dst, width);
1203		✗	dst += width;
1204			}
1205		✗	break;
1206		✗	case 2:
1207		✗	if (rle_decode(ctx, dst, decoded_size))
1208		✗	return AVERROR_INVALIDDATA;
1209		✗	break;
1210		✗	case 3:
1211		✗	if (seq == ctx->prev_seq + 1) {
1212		✗	for (j = 0; j < height; j += 8) {
1213		✗	for (i = 0; i < width; i += 8) {
1214		✗	if (codec48_block(ctx, dst + i, prev + i, width))
1215		✗	return AVERROR_INVALIDDATA;
1216			}
1217		✗	dst += width * 8;
1218		✗	prev += width * 8;
1219			}
1220			}
1221		✗	break;
1222		✗	case 5:
1223		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ((width + 1) >> 1) * ((height + 1) >> 1))
1224		✗	return AVERROR_INVALIDDATA;
1225		✗	codec47_comp1(ctx, dst, width, height, width);
1226		✗	break;
1227
1228		✗	default:
1229		✗	avpriv_report_missing_feature(ctx->avctx,
1230			"Subcodec 48 compression %d", compr);
1231		✗	return AVERROR_PATCHWELCOME;
1232			}
1233		✗	ctx->rotate_code = 1; // swap frm[0] and frm[2]
1234		✗	ctx->prev_seq = seq;
1235		✗	return 0;
1236			}
1237
1238		✗	static int process_frame_obj(SANMVideoContext *ctx)
1239			{
1240		✗	uint16_t codec = bytestream2_get_le16u(&ctx->gb);
1241		✗	uint16_t left = bytestream2_get_le16u(&ctx->gb);
1242		✗	uint16_t top = bytestream2_get_le16u(&ctx->gb);
1243		✗	uint16_t w = bytestream2_get_le16u(&ctx->gb);
1244		✗	uint16_t h = bytestream2_get_le16u(&ctx->gb);
1245
1246		✗	if (!w || !h) {
1247		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Dimensions are invalid.\n");
1248		✗	return AVERROR_INVALIDDATA;
1249			}
1250
1251		✗	if (ctx->width < left + w || ctx->height < top + h) {
1252		✗	int ret = ff_set_dimensions(ctx->avctx, FFMAX(left + w, ctx->width),
1253		✗	FFMAX(top + h, ctx->height));
1254		✗	if (ret < 0)
1255		✗	return ret;
1256		✗	init_sizes(ctx, FFMAX(left + w, ctx->width),
1257		✗	FFMAX(top + h, ctx->height));
1258		✗	if (init_buffers(ctx)) {
1259		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Error resizing buffers.\n");
1260		✗	return AVERROR(ENOMEM);
1261			}
1262			}
1263		✗	bytestream2_skip(&ctx->gb, 4);
1264
1265		✗	switch (codec) {
1266		✗	case 1:
1267			case 3:
1268		✗	return old_codec1(ctx, top, left, w, h);
1269		✗	case 37:
1270		✗	return old_codec37(ctx, top, left, w, h);
1271		✗	case 47:
1272		✗	return old_codec47(ctx, top, left, w, h);
1273		✗	case 48:
1274		✗	return old_codec48(ctx, w, h);
1275		✗	default:
1276		✗	avpriv_request_sample(ctx->avctx, "Subcodec %d", codec);
1277		✗	return AVERROR_PATCHWELCOME;
1278			}
1279			}
1280
1281		✗	static int process_xpal(SANMVideoContext *ctx, int size)
1282			{
1283		✗	int16_t *dp = ctx->delta_pal;
1284		✗	uint32_t *pal = ctx->pal;
1285			uint16_t cmd;
1286			uint8_t c[3];
1287			int i, j;
1288
1289		✗	bytestream2_skip(&ctx->gb, 2);
1290		✗	cmd = bytestream2_get_be16(&ctx->gb);
1291
1292		✗	if (cmd == 1) {
1293		✗	for (i = 0; i < PALETTE_DELTA; i += 3) {
1294		✗	c[0] = (*pal >> 16) & 0xFF;
1295		✗	c[1] = (*pal >> 8) & 0xFF;
1296		✗	c[2] = (*pal >> 0) & 0xFF;
1297		✗	for (j = 0; j < 3; j++) {
1298		✗	int cl = (c[j] * 129) + *dp++;
1299		✗	c[j] = av_clip_uint8(cl / 128) & 0xFF;
1300			}
1301		✗	*pal++ = 0xFFU << 24 | c[0] << 16 | c[1] << 8 | c[2];
1302			}
1303		✗	} else if (cmd == 2) {
1304		✗	if (size < PALETTE_DELTA * 2 + 4) {
1305		✗	av_log(ctx->avctx, AV_LOG_ERROR,
1306			"Incorrect palette change block size %"PRIu32".\n", size);
1307		✗	return AVERROR_INVALIDDATA;
1308			}
1309		✗	for (i = 0; i < PALETTE_DELTA; i++)
1310		✗	dp[i] = bytestream2_get_le16u(&ctx->gb);
1311
1312		✗	if (size >= PALETTE_DELTA * 2 + 4 + PALETTE_SIZE * 3) {
1313		✗	for (i = 0; i < PALETTE_SIZE; i++)
1314		✗	ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb);
1315			}
1316			}
1317		✗	return 0;
1318			}
1319
1320		✗	static int decode_0(SANMVideoContext *ctx)
1321			{
1322		✗	uint16_t *frm = ctx->frm0;
1323			int x, y;
1324
1325		✗	if (bytestream2_get_bytes_left(&ctx->gb) < ctx->width * ctx->height * 2) {
1326		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for raw frame.\n");
1327		✗	return AVERROR_INVALIDDATA;
1328			}
1329		✗	for (y = 0; y < ctx->height; y++) {
1330		✗	for (x = 0; x < ctx->width; x++)
1331		✗	frm[x] = bytestream2_get_le16u(&ctx->gb);
1332		✗	frm += ctx->pitch;
1333			}
1334		✗	return 0;
1335			}
1336
1337		✗	static int decode_nop(SANMVideoContext *ctx)
1338			{
1339		✗	avpriv_request_sample(ctx->avctx, "Unknown/unsupported compression type");
1340		✗	return AVERROR_PATCHWELCOME;
1341			}
1342
1343		42964	static void copy_block(uint16_t *pdest, uint16_t *psrc, int block_size, ptrdiff_t pitch)
1344			{
1345		42964	uint8_t *dst = (uint8_t *)pdest;
1346		42964	uint8_t *src = (uint8_t *)psrc;
1347		42964	ptrdiff_t stride = pitch * 2;
1348
1349	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) {
1350		14526	case 2:
1351		14526	copy_block4(dst, src, stride, stride, 2);
1352		14526	break;
1353		12400	case 4:
1354		12400	copy_block8(dst, src, stride, stride, 4);
1355		12400	break;
1356		16038	case 8:
1357		16038	copy_block16(dst, src, stride, stride, 8);
1358		16038	break;
1359			}
1360		42964	}
1361
1362		7913	static void fill_block(uint16_t *pdest, uint16_t color, int block_size, ptrdiff_t pitch)
1363			{
1364			int x, y;
1365
1366		7913	pitch -= block_size;
1367	2/2 ✓ Branch 0 taken 30438 times. ✓ Branch 1 taken 7913 times.	38351	for (y = 0; y < block_size; y++, pdest += pitch)
1368	2/2 ✓ Branch 0 taken 149540 times. ✓ Branch 1 taken 30438 times.	179978	for (x = 0; x < block_size; x++)
1369		149540	*pdest++ = color;
1370		7913	}
1371
1372		8368	static int draw_glyph(SANMVideoContext *ctx, uint16_t *dst, int index,
1373			uint16_t fg_color, uint16_t bg_color, int block_size,
1374			ptrdiff_t pitch)
1375			{
1376			int8_t *pglyph;
1377		8368	uint16_t colors[2] = { fg_color, bg_color };
1378			int x, y;
1379
1380	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 8368 times.	8368	if (index >= NGLYPHS) {
1381		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Ignoring nonexistent glyph #%u.\n", index);
1382		✗	return AVERROR_INVALIDDATA;
1383			}
1384
1385	2/2 ✓ Branch 0 taken 1158 times. ✓ Branch 1 taken 7210 times.	8368	pglyph = block_size == 8 ? ctx->p8x8glyphs[index] : ctx->p4x4glyphs[index];
1386		8368	pitch -= block_size;
1387
1388	2/2 ✓ Branch 0 taken 38104 times. ✓ Branch 1 taken 8368 times.	46472	for (y = 0; y < block_size; y++, dst += pitch)
1389	2/2 ✓ Branch 0 taken 189472 times. ✓ Branch 1 taken 38104 times.	227576	for (x = 0; x < block_size; x++)
1390		189472	*dst++ = colors[*pglyph++];
1391		8368	return 0;
1392			}
1393
1394		8029	static int opcode_0xf7(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch)
1395			{
1396		8029	uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch;
1397
1398	2/2 ✓ Branch 0 taken 825 times. ✓ Branch 1 taken 7204 times.	8029	if (block_size == 2) {
1399			uint32_t indices;
1400
1401	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 825 times.	825	if (bytestream2_get_bytes_left(&ctx->gb) < 4)
1402		✗	return AVERROR_INVALIDDATA;
1403
1404		825	indices = bytestream2_get_le32u(&ctx->gb);
1405		825	dst[0] = ctx->codebook[indices & 0xFF];
1406		825	indices >>= 8;
1407		825	dst[1] = ctx->codebook[indices & 0xFF];
1408		825	indices >>= 8;
1409		825	dst[pitch] = ctx->codebook[indices & 0xFF];
1410		825	indices >>= 8;
1411		825	dst[pitch + 1] = ctx->codebook[indices & 0xFF];
1412			} else {
1413			uint16_t fgcolor, bgcolor;
1414			int glyph;
1415
1416	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 7203 times.	7204	if (bytestream2_get_bytes_left(&ctx->gb) < 3)
1417		1	return AVERROR_INVALIDDATA;
1418
1419		7203	glyph = bytestream2_get_byteu(&ctx->gb);
1420		7203	bgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
1421		7203	fgcolor = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
1422
1423		7203	draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch);
1424			}
1425		8028	return 0;
1426			}
1427
1428		1169	static int opcode_0xf8(SANMVideoContext *ctx, int cx, int cy, int block_size, ptrdiff_t pitch)
1429			{
1430		1169	uint16_t *dst = ctx->frm0 + cx + cy * ctx->pitch;
1431
1432	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 1165 times.	1169	if (block_size == 2) {
1433	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 4 times.	4	if (bytestream2_get_bytes_left(&ctx->gb) < 8)
1434		✗	return AVERROR_INVALIDDATA;
1435
1436		4	dst[0] = bytestream2_get_le16u(&ctx->gb);
1437		4	dst[1] = bytestream2_get_le16u(&ctx->gb);
1438		4	dst[pitch] = bytestream2_get_le16u(&ctx->gb);
1439		4	dst[pitch + 1] = bytestream2_get_le16u(&ctx->gb);
1440			} else {
1441			uint16_t fgcolor, bgcolor;
1442			int glyph;
1443
1444	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1165 times.	1165	if (bytestream2_get_bytes_left(&ctx->gb) < 5)
1445		✗	return AVERROR_INVALIDDATA;
1446
1447		1165	glyph = bytestream2_get_byteu(&ctx->gb);
1448		1165	bgcolor = bytestream2_get_le16u(&ctx->gb);
1449		1165	fgcolor = bytestream2_get_le16u(&ctx->gb);
1450
1451		1165	draw_glyph(ctx, dst, glyph, fgcolor, bgcolor, block_size, pitch);
1452			}
1453		1169	return 0;
1454			}
1455
1456		30376	static int good_mvec(SANMVideoContext *ctx, int cx, int cy, int mx, int my,
1457			int block_size)
1458			{
1459		30376	int start_pos = cx + mx + (cy + my) * ctx->pitch;
1460		30376	int end_pos = start_pos + (block_size - 1) * (ctx->pitch + 1);
1461
1462	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);
1463
1464	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30376 times.	30376	if (!good)
1465		✗	av_log(ctx->avctx, AV_LOG_ERROR,
1466			"Ignoring invalid motion vector (%i, %i)->(%u, %u), block size = %u\n",
1467			cx + mx, cy + my, cx, cy, block_size);
1468
1469		30376	return good;
1470			}
1471
1472		71636	static int codec2subblock(SANMVideoContext *ctx, int cx, int cy, int blk_size)
1473			{
1474			int16_t mx, my, index;
1475			int opcode;
1476
1477	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 71635 times.	71636	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1478		1	return AVERROR_INVALIDDATA;
1479
1480		71635	opcode = bytestream2_get_byteu(&ctx->gb);
1481
1482	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) {
1483		28212	default:
1484		28212	mx = motion_vectors[opcode][0];
1485		28212	my = motion_vectors[opcode][1];
1486
1487	1/2 ✓ Branch 1 taken 28212 times. ✗ Branch 2 not taken.	28212	if (good_mvec(ctx, cx, cy, mx, my, blk_size)) {
1488		28212	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1489		28212	ctx->frm2 + cx + mx + ctx->pitch * (cy + my),
1490			blk_size, ctx->pitch);
1491			}
1492		28212	break;
1493		2164	case 0xF5:
1494	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2164 times.	2164	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
1495		✗	return AVERROR_INVALIDDATA;
1496		2164	index = bytestream2_get_le16u(&ctx->gb);
1497
1498		2164	mx = index % ctx->width;
1499		2164	my = index / ctx->width;
1500
1501	1/2 ✓ Branch 1 taken 2164 times. ✗ Branch 2 not taken.	2164	if (good_mvec(ctx, cx, cy, mx, my, blk_size)) {
1502		2164	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1503		2164	ctx->frm2 + cx + mx + ctx->pitch * (cy + my),
1504			blk_size, ctx->pitch);
1505			}
1506		2164	break;
1507		12588	case 0xF6:
1508		12588	copy_block(ctx->frm0 + cx + ctx->pitch * cy,
1509		12588	ctx->frm1 + cx + ctx->pitch * cy,
1510			blk_size, ctx->pitch);
1511		12588	break;
1512		8029	case 0xF7:
1513		8029	opcode_0xf7(ctx, cx, cy, blk_size, ctx->pitch);
1514		8029	break;
1515
1516		1169	case 0xF8:
1517		1169	opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch);
1518		1169	break;
1519		315	case 0xF9:
1520			case 0xFA:
1521			case 0xFB:
1522			case 0xFC:
1523		315	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
1524		315	ctx->small_codebook[opcode - 0xf9], blk_size, ctx->pitch);
1525		315	break;
1526		5496	case 0xFD:
1527	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 5496 times.	5496	if (bytestream2_get_bytes_left(&ctx->gb) < 1)
1528		✗	return AVERROR_INVALIDDATA;
1529		10992	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
1530		5496	ctx->codebook[bytestream2_get_byteu(&ctx->gb)], blk_size, ctx->pitch);
1531		5496	break;
1532		2102	case 0xFE:
1533	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2102 times.	2102	if (bytestream2_get_bytes_left(&ctx->gb) < 2)
1534		✗	return AVERROR_INVALIDDATA;
1535		2102	fill_block(ctx->frm0 + cx + cy * ctx->pitch,
1536		2102	bytestream2_get_le16u(&ctx->gb), blk_size, ctx->pitch);
1537		2102	break;
1538		11560	case 0xFF:
1539	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11560 times.	11560	if (blk_size == 2) {
1540		✗	opcode_0xf8(ctx, cx, cy, blk_size, ctx->pitch);
1541			} else {
1542		11560	blk_size >>= 1;
1543	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx, cy, blk_size))
1544		✗	return AVERROR_INVALIDDATA;
1545	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx + blk_size, cy, blk_size))
1546		✗	return AVERROR_INVALIDDATA;
1547	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx, cy + blk_size, blk_size))
1548		✗	return AVERROR_INVALIDDATA;
1549	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11560 times.	11560	if (codec2subblock(ctx, cx + blk_size, cy + blk_size, blk_size))
1550		✗	return AVERROR_INVALIDDATA;
1551			}
1552		11560	break;
1553			}
1554		71635	return 0;
1555			}
1556
1557		6	static int decode_2(SANMVideoContext *ctx)
1558			{
1559			int cx, cy, ret;
1560
1561	2/2 ✓ Branch 0 taken 318 times. ✓ Branch 1 taken 5 times.	323	for (cy = 0; cy < ctx->aligned_height; cy += 8)
1562	2/2 ✓ Branch 0 taken 25396 times. ✓ Branch 1 taken 317 times.	25713	for (cx = 0; cx < ctx->aligned_width; cx += 8)
1563	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 25395 times.	25396	if (ret = codec2subblock(ctx, cx, cy, 8))
1564		1	return ret;
1565
1566		5	return 0;
1567			}
1568
1569		✗	static int decode_3(SANMVideoContext *ctx)
1570			{
1571		✗	memcpy(ctx->frm0, ctx->frm2, ctx->frm2_size);
1572		✗	return 0;
1573			}
1574
1575		9	static int decode_4(SANMVideoContext *ctx)
1576			{
1577		9	memcpy(ctx->frm0, ctx->frm1, ctx->frm1_size);
1578		9	return 0;
1579			}
1580
1581		1	static int decode_5(SANMVideoContext *ctx)
1582			{
1583			#if HAVE_BIGENDIAN
1584			uint16_t *frm;
1585			int npixels;
1586			#endif
1587		1	uint8_t *dst = (uint8_t*)ctx->frm0;
1588
1589	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times.	1	if (rle_decode(ctx, dst, ctx->buf_size))
1590		✗	return AVERROR_INVALIDDATA;
1591
1592			#if HAVE_BIGENDIAN
1593			npixels = ctx->npixels;
1594			frm = ctx->frm0;
1595			while (npixels--) {
1596			*frm = av_bswap16(*frm);
1597			frm++;
1598			}
1599			#endif
1600
1601		1	return 0;
1602			}
1603
1604		✗	static int decode_6(SANMVideoContext *ctx)
1605			{
1606		✗	int npixels = ctx->npixels;
1607		✗	uint16_t *frm = ctx->frm0;
1608
1609		✗	if (bytestream2_get_bytes_left(&ctx->gb) < npixels) {
1610		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Insufficient data for frame.\n");
1611		✗	return AVERROR_INVALIDDATA;
1612			}
1613		✗	while (npixels--)
1614		✗	*frm++ = ctx->codebook[bytestream2_get_byteu(&ctx->gb)];
1615
1616		✗	return 0;
1617			}
1618
1619		✗	static int decode_8(SANMVideoContext *ctx)
1620			{
1621		✗	uint16_t *pdest = ctx->frm0;
1622			uint8_t *rsrc;
1623		✗	long npixels = ctx->npixels;
1624
1625		✗	av_fast_malloc(&ctx->rle_buf, &ctx->rle_buf_size, npixels);
1626		✗	if (!ctx->rle_buf) {
1627		✗	av_log(ctx->avctx, AV_LOG_ERROR, "RLE buffer allocation failed.\n");
1628		✗	return AVERROR(ENOMEM);
1629			}
1630		✗	rsrc = ctx->rle_buf;
1631
1632		✗	if (rle_decode(ctx, rsrc, npixels))
1633		✗	return AVERROR_INVALIDDATA;
1634
1635		✗	while (npixels--)
1636		✗	*pdest++ = ctx->codebook[*rsrc++];
1637
1638		✗	return 0;
1639			}
1640
1641			typedef int (*frm_decoder)(SANMVideoContext *ctx);
1642
1643			static const frm_decoder v1_decoders[] = {
1644			decode_0, decode_nop, decode_2, decode_3, decode_4, decode_5,
1645			decode_6, decode_nop, decode_8
1646			};
1647
1648		16	static int read_frame_header(SANMVideoContext *ctx, SANMFrameHeader *hdr)
1649			{
1650			int i, ret;
1651
1652	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 16 times.	16	if ((ret = bytestream2_get_bytes_left(&ctx->gb)) < 560) {
1653		✗	av_log(ctx->avctx, AV_LOG_ERROR, "Input frame too short (%d bytes).\n",
1654			ret);
1655		✗	return AVERROR_INVALIDDATA;
1656			}
1657		16	bytestream2_skip(&ctx->gb, 8); // skip pad
1658
1659		16	hdr->width = bytestream2_get_le32u(&ctx->gb);
1660		16	hdr->height = bytestream2_get_le32u(&ctx->gb);
1661
1662	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) {
1663		✗	avpriv_report_missing_feature(ctx->avctx, "Variable size frames");
1664		✗	return AVERROR_PATCHWELCOME;
1665			}
1666
1667		16	hdr->seq_num = bytestream2_get_le16u(&ctx->gb);
1668		16	hdr->codec = bytestream2_get_byteu(&ctx->gb);
1669		16	hdr->rotate_code = bytestream2_get_byteu(&ctx->gb);
1670
1671		16	bytestream2_skip(&ctx->gb, 4); // skip pad
1672
1673	2/2 ✓ Branch 0 taken 64 times. ✓ Branch 1 taken 16 times.	80	for (i = 0; i < 4; i++)
1674		64	ctx->small_codebook[i] = bytestream2_get_le16u(&ctx->gb);
1675		16	hdr->bg_color = bytestream2_get_le16u(&ctx->gb);
1676
1677		16	bytestream2_skip(&ctx->gb, 2); // skip pad
1678
1679		16	hdr->rle_output_size = bytestream2_get_le32u(&ctx->gb);
1680	2/2 ✓ Branch 0 taken 4096 times. ✓ Branch 1 taken 16 times.	4112	for (i = 0; i < 256; i++)
1681		4096	ctx->codebook[i] = bytestream2_get_le16u(&ctx->gb);
1682
1683		16	bytestream2_skip(&ctx->gb, 8); // skip pad
1684
1685		16	return 0;
1686			}
1687
1688		2	static void fill_frame(uint16_t *pbuf, int buf_size, uint16_t color)
1689			{
1690	1/2 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken.	2	if (buf_size--) {
1691		2	*pbuf++ = color;
1692		2	av_memcpy_backptr((uint8_t*)pbuf, 2, 2*buf_size);
1693			}
1694		2	}
1695
1696		15	static int copy_output(SANMVideoContext *ctx, SANMFrameHeader *hdr)
1697			{
1698			uint8_t *dst;
1699		15	const uint8_t *src = (uint8_t*) ctx->frm0;
1700		15	int ret, height = ctx->height;
1701	1/2 ✓ Branch 0 taken 15 times. ✗ Branch 1 not taken.	15	ptrdiff_t dstpitch, srcpitch = ctx->pitch * (hdr ? sizeof(ctx->frm0[0]) : 1);
1702
1703	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = ff_get_buffer(ctx->avctx, ctx->frame, 0)) < 0)
1704		✗	return ret;
1705
1706		15	dst = ctx->frame->data[0];
1707		15	dstpitch = ctx->frame->linesize[0];
1708
1709	2/2 ✓ Branch 0 taken 7200 times. ✓ Branch 1 taken 15 times.	7215	while (height--) {
1710		7200	memcpy(dst, src, srcpitch);
1711		7200	src += srcpitch;
1712		7200	dst += dstpitch;
1713			}
1714
1715		15	return 0;
1716			}
1717
1718		16	static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
1719			int *got_frame_ptr, AVPacket *pkt)
1720			{
1721		16	SANMVideoContext *ctx = avctx->priv_data;
1722			int i, ret;
1723
1724		16	ctx->frame = frame;
1725		16	bytestream2_init(&ctx->gb, pkt->data, pkt->size);
1726
1727	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 16 times.	16	if (!ctx->version) {
1728		✗	int to_store = 0;
1729
1730		✗	while (bytestream2_get_bytes_left(&ctx->gb) >= 8) {
1731			uint32_t sig, size;
1732			int pos;
1733
1734		✗	sig = bytestream2_get_be32u(&ctx->gb);
1735		✗	size = bytestream2_get_be32u(&ctx->gb);
1736		✗	pos = bytestream2_tell(&ctx->gb);
1737
1738		✗	if (bytestream2_get_bytes_left(&ctx->gb) < size) {
1739		✗	av_log(avctx, AV_LOG_ERROR, "Incorrect chunk size %"PRIu32".\n", size);
1740		✗	break;
1741			}
1742		✗	switch (sig) {
1743		✗	case MKBETAG('N', 'P', 'A', 'L'):
1744		✗	if (size != PALETTE_SIZE * 3) {
1745		✗	av_log(avctx, AV_LOG_ERROR,
1746			"Incorrect palette block size %"PRIu32".\n", size);
1747		✗	return AVERROR_INVALIDDATA;
1748			}
1749		✗	for (i = 0; i < PALETTE_SIZE; i++)
1750		✗	ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb);
1751		✗	break;
1752		✗	case MKBETAG('F', 'O', 'B', 'J'):
1753		✗	if (size < 16)
1754		✗	return AVERROR_INVALIDDATA;
1755		✗	if (ret = process_frame_obj(ctx))
1756		✗	return ret;
1757		✗	break;
1758		✗	case MKBETAG('X', 'P', 'A', 'L'):
1759		✗	if (ret = process_xpal(ctx, size))
1760		✗	return ret;
1761		✗	break;
1762		✗	case MKBETAG('S', 'T', 'O', 'R'):
1763		✗	to_store = 1;
1764		✗	break;
1765		✗	case MKBETAG('F', 'T', 'C', 'H'):
1766		✗	memcpy(ctx->frm0, ctx->stored_frame, ctx->buf_size);
1767		✗	break;
1768		✗	default:
1769		✗	bytestream2_skip(&ctx->gb, size);
1770		✗	av_log(avctx, AV_LOG_DEBUG,
1771			"Unknown/unsupported chunk %"PRIx32".\n", sig);
1772		✗	break;
1773			}
1774
1775		✗	bytestream2_seek(&ctx->gb, pos + size, SEEK_SET);
1776		✗	if (size & 1)
1777		✗	bytestream2_skip(&ctx->gb, 1);
1778			}
1779		✗	if (to_store)
1780		✗	memcpy(ctx->stored_frame, ctx->frm0, ctx->buf_size);
1781		✗	if ((ret = copy_output(ctx, NULL)))
1782		✗	return ret;
1783		✗	memcpy(ctx->frame->data[1], ctx->pal, 1024);
1784			} else {
1785			SANMFrameHeader header;
1786
1787	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 16 times.	16	if ((ret = read_frame_header(ctx, &header)))
1788		1	return ret;
1789
1790		16	ctx->rotate_code = header.rotate_code;
1791	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 15 times.	16	if (!header.seq_num) {
1792		1	ctx->frame->flags |= AV_FRAME_FLAG_KEY;
1793		1	ctx->frame->pict_type = AV_PICTURE_TYPE_I;
1794		1	fill_frame(ctx->frm1, ctx->npixels, header.bg_color);
1795		1	fill_frame(ctx->frm2, ctx->npixels, header.bg_color);
1796			} else {
1797		15	ctx->frame->flags &= ~AV_FRAME_FLAG_KEY;
1798		15	ctx->frame->pict_type = AV_PICTURE_TYPE_P;
1799			}
1800
1801	1/2 ✓ Branch 0 taken 16 times. ✗ Branch 1 not taken.	16	if (header.codec < FF_ARRAY_ELEMS(v1_decoders)) {
1802	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 15 times.	16	if ((ret = v1_decoders[header.codec](ctx))) {
1803		1	av_log(avctx, AV_LOG_ERROR,
1804			"Subcodec %d: error decoding frame.\n", header.codec);
1805		1	return ret;
1806			}
1807			} else {
1808		✗	avpriv_request_sample(avctx, "Subcodec %d", header.codec);
1809		✗	return AVERROR_PATCHWELCOME;
1810			}
1811
1812	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = copy_output(ctx, &header)))
1813		✗	return ret;
1814			}
1815	2/2 ✓ Branch 0 taken 9 times. ✓ Branch 1 taken 6 times.	15	if (ctx->rotate_code)
1816		9	rotate_bufs(ctx, ctx->rotate_code);
1817
1818		15	*got_frame_ptr = 1;
1819
1820		15	return pkt->size;
1821			}
1822
1823			const FFCodec ff_sanm_decoder = {
1824			.p.name = "sanm",
1825			CODEC_LONG_NAME("LucasArts SANM/Smush video"),
1826			.p.type = AVMEDIA_TYPE_VIDEO,
1827			.p.id = AV_CODEC_ID_SANM,
1828			.priv_data_size = sizeof(SANMVideoContext),
1829			.init = decode_init,
1830			.close = decode_end,
1831			FF_CODEC_DECODE_CB(decode_frame),
1832			.p.capabilities = AV_CODEC_CAP_DR1,
1833			};
1834