Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/iff.c |
Date: | 2022-07-05 19:52:29 |
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Lines: | 136 | 1087 | 12.5% |
Branches: | 78 | 822 | 9.5% |
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1 | /* | ||
2 | * IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder | ||
3 | * Copyright (c) 2010 Peter Ross <pross@xvid.org> | ||
4 | * Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com> | ||
5 | * Copyright (c) 2016 Paul B Mahol | ||
6 | * | ||
7 | * This file is part of FFmpeg. | ||
8 | * | ||
9 | * FFmpeg is free software; you can redistribute it and/or | ||
10 | * modify it under the terms of the GNU Lesser General Public | ||
11 | * License as published by the Free Software Foundation; either | ||
12 | * version 2.1 of the License, or (at your option) any later version. | ||
13 | * | ||
14 | * FFmpeg is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
17 | * Lesser General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU Lesser General Public | ||
20 | * License along with FFmpeg; if not, write to the Free Software | ||
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
22 | */ | ||
23 | |||
24 | /** | ||
25 | * @file | ||
26 | * IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN bitmap decoder | ||
27 | */ | ||
28 | |||
29 | #include <stdint.h> | ||
30 | |||
31 | #include "libavutil/imgutils.h" | ||
32 | |||
33 | #include "bytestream.h" | ||
34 | #include "avcodec.h" | ||
35 | #include "codec_internal.h" | ||
36 | #include "internal.h" | ||
37 | #include "mathops.h" | ||
38 | |||
39 | // TODO: masking bits | ||
40 | typedef enum { | ||
41 | MASK_NONE, | ||
42 | MASK_HAS_MASK, | ||
43 | MASK_HAS_TRANSPARENT_COLOR, | ||
44 | MASK_LASSO | ||
45 | } mask_type; | ||
46 | |||
47 | typedef struct IffContext { | ||
48 | AVFrame *frame; | ||
49 | int planesize; | ||
50 | uint8_t * planebuf; | ||
51 | uint8_t * ham_buf; ///< temporary buffer for planar to chunky conversation | ||
52 | uint32_t *ham_palbuf; ///< HAM decode table | ||
53 | uint32_t *mask_buf; ///< temporary buffer for palette indices | ||
54 | uint32_t *mask_palbuf; ///< masking palette table | ||
55 | unsigned compression; ///< delta compression method used | ||
56 | unsigned is_short; ///< short compression method used | ||
57 | unsigned is_interlaced;///< video is interlaced | ||
58 | unsigned is_brush; ///< video is in ANBR format | ||
59 | unsigned bpp; ///< bits per plane to decode (differs from bits_per_coded_sample if HAM) | ||
60 | unsigned ham; ///< 0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise) | ||
61 | unsigned flags; ///< 1 for EHB, 0 is no extra half darkening | ||
62 | unsigned transparency; ///< TODO: transparency color index in palette | ||
63 | unsigned masking; ///< TODO: masking method used | ||
64 | int init; // 1 if buffer and palette data already initialized, 0 otherwise | ||
65 | int16_t tvdc[16]; ///< TVDC lookup table | ||
66 | GetByteContext gb; | ||
67 | uint8_t *video[2]; | ||
68 | unsigned video_size; | ||
69 | uint32_t *pal; | ||
70 | } IffContext; | ||
71 | |||
72 | #define LUT8_PART(plane, v) \ | ||
73 | AV_LE2NE64C(UINT64_C(0x0000000)<<32 | v) << plane, \ | ||
74 | AV_LE2NE64C(UINT64_C(0x1000000)<<32 | v) << plane, \ | ||
75 | AV_LE2NE64C(UINT64_C(0x0010000)<<32 | v) << plane, \ | ||
76 | AV_LE2NE64C(UINT64_C(0x1010000)<<32 | v) << plane, \ | ||
77 | AV_LE2NE64C(UINT64_C(0x0000100)<<32 | v) << plane, \ | ||
78 | AV_LE2NE64C(UINT64_C(0x1000100)<<32 | v) << plane, \ | ||
79 | AV_LE2NE64C(UINT64_C(0x0010100)<<32 | v) << plane, \ | ||
80 | AV_LE2NE64C(UINT64_C(0x1010100)<<32 | v) << plane, \ | ||
81 | AV_LE2NE64C(UINT64_C(0x0000001)<<32 | v) << plane, \ | ||
82 | AV_LE2NE64C(UINT64_C(0x1000001)<<32 | v) << plane, \ | ||
83 | AV_LE2NE64C(UINT64_C(0x0010001)<<32 | v) << plane, \ | ||
84 | AV_LE2NE64C(UINT64_C(0x1010001)<<32 | v) << plane, \ | ||
85 | AV_LE2NE64C(UINT64_C(0x0000101)<<32 | v) << plane, \ | ||
86 | AV_LE2NE64C(UINT64_C(0x1000101)<<32 | v) << plane, \ | ||
87 | AV_LE2NE64C(UINT64_C(0x0010101)<<32 | v) << plane, \ | ||
88 | AV_LE2NE64C(UINT64_C(0x1010101)<<32 | v) << plane | ||
89 | |||
90 | #define LUT8(plane) { \ | ||
91 | LUT8_PART(plane, 0x0000000), \ | ||
92 | LUT8_PART(plane, 0x1000000), \ | ||
93 | LUT8_PART(plane, 0x0010000), \ | ||
94 | LUT8_PART(plane, 0x1010000), \ | ||
95 | LUT8_PART(plane, 0x0000100), \ | ||
96 | LUT8_PART(plane, 0x1000100), \ | ||
97 | LUT8_PART(plane, 0x0010100), \ | ||
98 | LUT8_PART(plane, 0x1010100), \ | ||
99 | LUT8_PART(plane, 0x0000001), \ | ||
100 | LUT8_PART(plane, 0x1000001), \ | ||
101 | LUT8_PART(plane, 0x0010001), \ | ||
102 | LUT8_PART(plane, 0x1010001), \ | ||
103 | LUT8_PART(plane, 0x0000101), \ | ||
104 | LUT8_PART(plane, 0x1000101), \ | ||
105 | LUT8_PART(plane, 0x0010101), \ | ||
106 | LUT8_PART(plane, 0x1010101), \ | ||
107 | } | ||
108 | |||
109 | // 8 planes * 8-bit mask | ||
110 | static const uint64_t plane8_lut[8][256] = { | ||
111 | LUT8(0), LUT8(1), LUT8(2), LUT8(3), | ||
112 | LUT8(4), LUT8(5), LUT8(6), LUT8(7), | ||
113 | }; | ||
114 | |||
115 | #define LUT32(plane) { \ | ||
116 | 0, 0, 0, 0, \ | ||
117 | 0, 0, 0, 1U << plane, \ | ||
118 | 0, 0, 1U << plane, 0, \ | ||
119 | 0, 0, 1U << plane, 1U << plane, \ | ||
120 | 0, 1U << plane, 0, 0, \ | ||
121 | 0, 1U << plane, 0, 1U << plane, \ | ||
122 | 0, 1U << plane, 1U << plane, 0, \ | ||
123 | 0, 1U << plane, 1U << plane, 1U << plane, \ | ||
124 | 1U << plane, 0, 0, 0, \ | ||
125 | 1U << plane, 0, 0, 1U << plane, \ | ||
126 | 1U << plane, 0, 1U << plane, 0, \ | ||
127 | 1U << plane, 0, 1U << plane, 1U << plane, \ | ||
128 | 1U << plane, 1U << plane, 0, 0, \ | ||
129 | 1U << plane, 1U << plane, 0, 1U << plane, \ | ||
130 | 1U << plane, 1U << plane, 1U << plane, 0, \ | ||
131 | 1U << plane, 1U << plane, 1U << plane, 1U << plane, \ | ||
132 | } | ||
133 | |||
134 | // 32 planes * 4-bit mask * 4 lookup tables each | ||
135 | static const uint32_t plane32_lut[32][16*4] = { | ||
136 | LUT32( 0), LUT32( 1), LUT32( 2), LUT32( 3), | ||
137 | LUT32( 4), LUT32( 5), LUT32( 6), LUT32( 7), | ||
138 | LUT32( 8), LUT32( 9), LUT32(10), LUT32(11), | ||
139 | LUT32(12), LUT32(13), LUT32(14), LUT32(15), | ||
140 | LUT32(16), LUT32(17), LUT32(18), LUT32(19), | ||
141 | LUT32(20), LUT32(21), LUT32(22), LUT32(23), | ||
142 | LUT32(24), LUT32(25), LUT32(26), LUT32(27), | ||
143 | LUT32(28), LUT32(29), LUT32(30), LUT32(31), | ||
144 | }; | ||
145 | |||
146 | // Gray to RGB, required for palette table of grayscale images with bpp < 8 | ||
147 | ✗ | static av_always_inline uint32_t gray2rgb(const uint32_t x) { | |
148 | ✗ | return x << 16 | x << 8 | x; | |
149 | } | ||
150 | |||
151 | /** | ||
152 | * Convert CMAP buffer (stored in extradata) to lavc palette format | ||
153 | */ | ||
154 | 2 | static int cmap_read_palette(AVCodecContext *avctx, uint32_t *pal) | |
155 | { | ||
156 | 2 | IffContext *s = avctx->priv_data; | |
157 | int count, i; | ||
158 | 2 | const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); | |
159 | 2 | int palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); | |
160 | |||
161 |
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2 | if (avctx->bits_per_coded_sample > 8) { |
162 | ✗ | av_log(avctx, AV_LOG_ERROR, "bits_per_coded_sample > 8 not supported\n"); | |
163 | ✗ | return AVERROR_INVALIDDATA; | |
164 | } | ||
165 | |||
166 | 2 | count = 1 << avctx->bits_per_coded_sample; | |
167 | // If extradata is smaller than actually needed, fill the remaining with black. | ||
168 | 2 | count = FFMIN(palette_size / 3, count); | |
169 |
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2 | if (count) { |
170 |
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514 | for (i = 0; i < count; i++) |
171 | 512 | pal[i] = 0xFF000000 | AV_RB24(palette + i*3); | |
172 |
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2 | if (s->flags && count >= 32) { // EHB |
173 | ✗ | for (i = 0; i < 32; i++) | |
174 | ✗ | pal[i + 32] = 0xFF000000 | (AV_RB24(palette + i*3) & 0xFEFEFE) >> 1; | |
175 | ✗ | count = FFMAX(count, 64); | |
176 | } | ||
177 | } else { // Create gray-scale color palette for bps < 8 | ||
178 | ✗ | count = 1 << avctx->bits_per_coded_sample; | |
179 | |||
180 | ✗ | for (i = 0; i < count; i++) | |
181 | ✗ | pal[i] = 0xFF000000 | gray2rgb((i * 255) >> avctx->bits_per_coded_sample); | |
182 | } | ||
183 |
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2 | if (s->masking == MASK_HAS_MASK) { |
184 | ✗ | if ((1 << avctx->bits_per_coded_sample) < count) { | |
185 | ✗ | avpriv_request_sample(avctx, "overlapping mask"); | |
186 | ✗ | return AVERROR_PATCHWELCOME; | |
187 | } | ||
188 | ✗ | memcpy(pal + (1 << avctx->bits_per_coded_sample), pal, count * 4); | |
189 | ✗ | for (i = 0; i < count; i++) | |
190 | ✗ | pal[i] &= 0xFFFFFF; | |
191 |
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2 | } else if (s->masking == MASK_HAS_TRANSPARENT_COLOR && |
192 | ✗ | s->transparency < 1 << avctx->bits_per_coded_sample) | |
193 | ✗ | pal[s->transparency] &= 0xFFFFFF; | |
194 | 2 | return 0; | |
195 | } | ||
196 | |||
197 | /** | ||
198 | * Extracts the IFF extra context and updates internal | ||
199 | * decoder structures. | ||
200 | * | ||
201 | * @param avctx the AVCodecContext where to extract extra context to | ||
202 | * @param avpkt the AVPacket to extract extra context from or NULL to use avctx | ||
203 | * @return >= 0 in case of success, a negative error code otherwise | ||
204 | */ | ||
205 | 6 | static int extract_header(AVCodecContext *const avctx, | |
206 | const AVPacket *const avpkt) | ||
207 | { | ||
208 | 6 | IffContext *s = avctx->priv_data; | |
209 | const uint8_t *buf; | ||
210 | 6 | unsigned buf_size = 0; | |
211 | int i, palette_size; | ||
212 | |||
213 |
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6 | if (avctx->extradata_size < 2) { |
214 | ✗ | av_log(avctx, AV_LOG_ERROR, "not enough extradata\n"); | |
215 | ✗ | return AVERROR_INVALIDDATA; | |
216 | } | ||
217 | 6 | palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); | |
218 | |||
219 |
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6 | if (avpkt && avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { |
220 | uint32_t chunk_id; | ||
221 | uint64_t data_size; | ||
222 | ✗ | GetByteContext *gb = &s->gb; | |
223 | |||
224 | ✗ | bytestream2_skip(gb, 4); | |
225 | ✗ | while (bytestream2_get_bytes_left(gb) >= 1) { | |
226 | ✗ | chunk_id = bytestream2_get_le32(gb); | |
227 | ✗ | data_size = bytestream2_get_be32(gb); | |
228 | |||
229 | ✗ | if (chunk_id == MKTAG('B', 'M', 'H', 'D')) { | |
230 | ✗ | bytestream2_skip(gb, data_size + (data_size & 1)); | |
231 | ✗ | } else if (chunk_id == MKTAG('A', 'N', 'H', 'D')) { | |
232 | unsigned extra; | ||
233 | ✗ | if (data_size < 40) | |
234 | ✗ | return AVERROR_INVALIDDATA; | |
235 | |||
236 | ✗ | s->compression = (bytestream2_get_byte(gb) << 8) | (s->compression & 0xFF); | |
237 | ✗ | bytestream2_skip(gb, 19); | |
238 | ✗ | extra = bytestream2_get_be32(gb); | |
239 | ✗ | s->is_short = !(extra & 1); | |
240 | ✗ | s->is_brush = extra == 2; | |
241 | ✗ | s->is_interlaced = !!(extra & 0x40); | |
242 | ✗ | data_size -= 24; | |
243 | ✗ | bytestream2_skip(gb, data_size + (data_size & 1)); | |
244 | ✗ | } else if (chunk_id == MKTAG('D', 'L', 'T', 'A') || | |
245 | chunk_id == MKTAG('B', 'O', 'D', 'Y')) { | ||
246 | ✗ | if (chunk_id == MKTAG('B','O','D','Y')) | |
247 | ✗ | s->compression &= 0xFF; | |
248 | ✗ | break; | |
249 | ✗ | } else if (chunk_id == MKTAG('C', 'M', 'A', 'P')) { | |
250 | ✗ | int count = data_size / 3; | |
251 | ✗ | uint32_t *pal = s->pal; | |
252 | |||
253 | ✗ | if (count > 256) | |
254 | ✗ | return AVERROR_INVALIDDATA; | |
255 | ✗ | if (s->ham) { | |
256 | ✗ | for (i = 0; i < count; i++) | |
257 | ✗ | pal[i] = 0xFF000000 | bytestream2_get_le24(gb); | |
258 | } else { | ||
259 | ✗ | for (i = 0; i < count; i++) | |
260 | ✗ | pal[i] = 0xFF000000 | bytestream2_get_be24(gb); | |
261 | } | ||
262 | ✗ | bytestream2_skip(gb, data_size & 1); | |
263 | } else { | ||
264 | ✗ | bytestream2_skip(gb, data_size + (data_size&1)); | |
265 | } | ||
266 | } | ||
267 |
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6 | } else if (!avpkt) { |
268 | 4 | buf = avctx->extradata; | |
269 | 4 | buf_size = bytestream_get_be16(&buf); | |
270 |
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4 | if (buf_size <= 1 || palette_size < 0) { |
271 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
272 | "Invalid palette size received: %u -> palette data offset: %d\n", | ||
273 | buf_size, palette_size); | ||
274 | ✗ | return AVERROR_INVALIDDATA; | |
275 | } | ||
276 | } | ||
277 | |||
278 |
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6 | if (buf_size >= 41) { |
279 | 4 | s->compression = bytestream_get_byte(&buf); | |
280 | 4 | s->bpp = bytestream_get_byte(&buf); | |
281 | 4 | s->ham = bytestream_get_byte(&buf); | |
282 | 4 | s->flags = bytestream_get_byte(&buf); | |
283 | 4 | s->transparency = bytestream_get_be16(&buf); | |
284 | 4 | s->masking = bytestream_get_byte(&buf); | |
285 |
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68 | for (i = 0; i < 16; i++) |
286 | 64 | s->tvdc[i] = bytestream_get_be16(&buf); | |
287 | |||
288 |
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4 | if (s->ham) { |
289 | ✗ | if (s->bpp > 8) { | |
290 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham); | |
291 | ✗ | return AVERROR_INVALIDDATA; | |
292 | ✗ | } else if (s->ham != (s->bpp > 6 ? 6 : 4)) { | |
293 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u, BPP: %u\n", s->ham, s->bpp); | |
294 | ✗ | return AVERROR_INVALIDDATA; | |
295 | } | ||
296 | } | ||
297 | |||
298 |
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4 | if (s->masking == MASK_HAS_MASK) { |
299 | ✗ | if (s->bpp >= 8 && !s->ham) { | |
300 | ✗ | avctx->pix_fmt = AV_PIX_FMT_RGB32; | |
301 | ✗ | av_freep(&s->mask_buf); | |
302 | ✗ | av_freep(&s->mask_palbuf); | |
303 | ✗ | if (s->bpp > 16) { | |
304 | ✗ | av_log(avctx, AV_LOG_ERROR, "bpp %d too large for palette\n", s->bpp); | |
305 | ✗ | return AVERROR(ENOMEM); | |
306 | } | ||
307 | ✗ | s->mask_buf = av_malloc((s->planesize * 32) + AV_INPUT_BUFFER_PADDING_SIZE); | |
308 | ✗ | if (!s->mask_buf) | |
309 | ✗ | return AVERROR(ENOMEM); | |
310 | ✗ | s->mask_palbuf = av_malloc((2 << s->bpp) * sizeof(uint32_t) + AV_INPUT_BUFFER_PADDING_SIZE); | |
311 | ✗ | if (!s->mask_palbuf) { | |
312 | ✗ | av_freep(&s->mask_buf); | |
313 | ✗ | return AVERROR(ENOMEM); | |
314 | } | ||
315 | } | ||
316 | ✗ | s->bpp++; | |
317 |
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4 | } else if (s->masking != MASK_NONE && s->masking != MASK_HAS_TRANSPARENT_COLOR) { |
318 | ✗ | av_log(avctx, AV_LOG_ERROR, "Masking not supported\n"); | |
319 | ✗ | return AVERROR_PATCHWELCOME; | |
320 | } | ||
321 |
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4 | if (!s->bpp || s->bpp > 32) { |
322 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid number of bitplanes: %u\n", s->bpp); | |
323 | ✗ | return AVERROR_INVALIDDATA; | |
324 | } | ||
325 |
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4 | if (s->video_size && s->planesize * s->bpp * avctx->height > s->video_size) |
326 | ✗ | return AVERROR_INVALIDDATA; | |
327 | |||
328 | 4 | av_freep(&s->ham_buf); | |
329 | 4 | av_freep(&s->ham_palbuf); | |
330 | |||
331 |
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4 | if (s->ham) { |
332 | ✗ | int i, count = FFMIN(palette_size / 3, 1 << s->ham); | |
333 | int ham_count; | ||
334 | ✗ | const uint8_t *const palette = avctx->extradata + AV_RB16(avctx->extradata); | |
335 | ✗ | int extra_space = 1; | |
336 | |||
337 | ✗ | if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ') && s->ham == 4) | |
338 | ✗ | extra_space = 4; | |
339 | |||
340 | ✗ | s->ham_buf = av_malloc((s->planesize * 8) + AV_INPUT_BUFFER_PADDING_SIZE); | |
341 | ✗ | if (!s->ham_buf) | |
342 | ✗ | return AVERROR(ENOMEM); | |
343 | |||
344 | ✗ | ham_count = 8 * (1 << s->ham); | |
345 | ✗ | s->ham_palbuf = av_malloc(extra_space * (ham_count << !!(s->masking == MASK_HAS_MASK)) * sizeof (uint32_t) + AV_INPUT_BUFFER_PADDING_SIZE); | |
346 | ✗ | if (!s->ham_palbuf) { | |
347 | ✗ | av_freep(&s->ham_buf); | |
348 | ✗ | return AVERROR(ENOMEM); | |
349 | } | ||
350 | |||
351 | ✗ | if (count) { // HAM with color palette attached | |
352 | // prefill with black and palette and set HAM take direct value mask to zero | ||
353 | ✗ | memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof (uint32_t)); | |
354 | ✗ | for (i=0; i < count; i++) { | |
355 | ✗ | s->ham_palbuf[i*2+1] = 0xFF000000 | AV_RL24(palette + i*3); | |
356 | } | ||
357 | ✗ | count = 1 << s->ham; | |
358 | } else { // HAM with grayscale color palette | ||
359 | ✗ | count = 1 << s->ham; | |
360 | ✗ | for (i=0; i < count; i++) { | |
361 | ✗ | s->ham_palbuf[i*2] = 0xFF000000; // take direct color value from palette | |
362 | ✗ | s->ham_palbuf[i*2+1] = 0xFF000000 | av_le2ne32(gray2rgb((i * 255) >> s->ham)); | |
363 | } | ||
364 | } | ||
365 | ✗ | for (i=0; i < count; i++) { | |
366 | ✗ | uint32_t tmp = i << (8 - s->ham); | |
367 | ✗ | tmp |= tmp >> s->ham; | |
368 | ✗ | s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; // just modify blue color component | |
369 | ✗ | s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; // just modify red color component | |
370 | ✗ | s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; // just modify green color component | |
371 | ✗ | s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16; | |
372 | ✗ | s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp; | |
373 | ✗ | s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8; | |
374 | } | ||
375 | ✗ | if (s->masking == MASK_HAS_MASK) { | |
376 | ✗ | for (i = 0; i < ham_count; i++) | |
377 | ✗ | s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000; | |
378 | } | ||
379 | } | ||
380 | } | ||
381 | |||
382 | 6 | return 0; | |
383 | } | ||
384 | |||
385 | 4 | static av_cold int decode_end(AVCodecContext *avctx) | |
386 | { | ||
387 | 4 | IffContext *s = avctx->priv_data; | |
388 | 4 | av_freep(&s->planebuf); | |
389 | 4 | av_freep(&s->ham_buf); | |
390 | 4 | av_freep(&s->ham_palbuf); | |
391 | 4 | av_freep(&s->mask_buf); | |
392 | 4 | av_freep(&s->mask_palbuf); | |
393 | 4 | av_freep(&s->video[0]); | |
394 | 4 | av_freep(&s->video[1]); | |
395 | 4 | av_freep(&s->pal); | |
396 | 4 | return 0; | |
397 | } | ||
398 | |||
399 | 4 | static av_cold int decode_init(AVCodecContext *avctx) | |
400 | { | ||
401 | 4 | IffContext *s = avctx->priv_data; | |
402 | int err; | ||
403 | |||
404 |
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4 | if (avctx->bits_per_coded_sample <= 8) { |
405 | int palette_size; | ||
406 | |||
407 |
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4 | if (avctx->extradata_size >= 2) |
408 | 4 | palette_size = avctx->extradata_size - AV_RB16(avctx->extradata); | |
409 | else | ||
410 | ✗ | palette_size = 0; | |
411 | 4 | avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) || | |
412 |
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4 | (avctx->extradata_size >= 2 && palette_size) ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8; |
413 | ✗ | } else if (avctx->bits_per_coded_sample <= 32) { | |
414 | ✗ | if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8')) { | |
415 | ✗ | avctx->pix_fmt = AV_PIX_FMT_RGB32; | |
416 | ✗ | } else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N')) { | |
417 | ✗ | avctx->pix_fmt = AV_PIX_FMT_RGB444; | |
418 | ✗ | } else if (avctx->codec_tag != MKTAG('D', 'E', 'E', 'P')) { | |
419 | ✗ | if (avctx->bits_per_coded_sample == 24) { | |
420 | ✗ | avctx->pix_fmt = AV_PIX_FMT_0BGR32; | |
421 | ✗ | } else if (avctx->bits_per_coded_sample == 32) { | |
422 | ✗ | avctx->pix_fmt = AV_PIX_FMT_BGR32; | |
423 | } else { | ||
424 | ✗ | avpriv_request_sample(avctx, "unknown bits_per_coded_sample"); | |
425 | ✗ | return AVERROR_PATCHWELCOME; | |
426 | } | ||
427 | } | ||
428 | } else { | ||
429 | ✗ | return AVERROR_INVALIDDATA; | |
430 | } | ||
431 | |||
432 |
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4 | if ((err = av_image_check_size(avctx->width, avctx->height, 0, avctx))) |
433 | ✗ | return err; | |
434 | 4 | s->planesize = FFALIGN(avctx->width, 16) >> 3; // Align plane size in bits to word-boundary | |
435 | 4 | s->planebuf = av_malloc(s->planesize * avctx->height + AV_INPUT_BUFFER_PADDING_SIZE); | |
436 |
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4 | if (!s->planebuf) |
437 | ✗ | return AVERROR(ENOMEM); | |
438 | |||
439 | 4 | s->bpp = avctx->bits_per_coded_sample; | |
440 | |||
441 |
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4 | if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { |
442 | ✗ | s->video_size = FFALIGN(avctx->width, 2) * avctx->height * s->bpp; | |
443 | ✗ | if (!s->video_size) | |
444 | ✗ | return AVERROR_INVALIDDATA; | |
445 | ✗ | s->video[0] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); | |
446 | ✗ | s->video[1] = av_calloc(FFALIGN(avctx->width, 2) * avctx->height, s->bpp); | |
447 | ✗ | s->pal = av_calloc(256, sizeof(*s->pal)); | |
448 | ✗ | if (!s->video[0] || !s->video[1] || !s->pal) | |
449 | ✗ | return AVERROR(ENOMEM); | |
450 | } | ||
451 | |||
452 |
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4 | if ((err = extract_header(avctx, NULL)) < 0) |
453 | ✗ | return err; | |
454 | |||
455 | 4 | return 0; | |
456 | } | ||
457 | |||
458 | /** | ||
459 | * Decode interleaved plane buffer up to 8bpp | ||
460 | * @param dst Destination buffer | ||
461 | * @param buf Source buffer | ||
462 | * @param buf_size | ||
463 | * @param plane plane number to decode as | ||
464 | */ | ||
465 | 1920 | static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane) | |
466 | { | ||
467 | const uint64_t *lut; | ||
468 |
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1920 | if (plane >= 8) { |
469 | ✗ | av_log(NULL, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n"); | |
470 | ✗ | return; | |
471 | } | ||
472 | 1920 | lut = plane8_lut[plane]; | |
473 | do { | ||
474 | 76800 | uint64_t v = AV_RN64A(dst) | lut[*buf++]; | |
475 | 76800 | AV_WN64A(dst, v); | |
476 | 76800 | dst += 8; | |
477 |
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76800 | } while (--buf_size); |
478 | } | ||
479 | |||
480 | /** | ||
481 | * Decode interleaved plane buffer up to 24bpp | ||
482 | * @param dst Destination buffer | ||
483 | * @param buf Source buffer | ||
484 | * @param buf_size | ||
485 | * @param plane plane number to decode as | ||
486 | */ | ||
487 | ✗ | static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int plane) | |
488 | { | ||
489 | ✗ | const uint32_t *lut = plane32_lut[plane]; | |
490 | do { | ||
491 | ✗ | unsigned mask = (*buf >> 2) & ~3; | |
492 | ✗ | dst[0] |= lut[mask++]; | |
493 | ✗ | dst[1] |= lut[mask++]; | |
494 | ✗ | dst[2] |= lut[mask++]; | |
495 | ✗ | dst[3] |= lut[mask]; | |
496 | ✗ | mask = (*buf++ << 2) & 0x3F; | |
497 | ✗ | dst[4] |= lut[mask++]; | |
498 | ✗ | dst[5] |= lut[mask++]; | |
499 | ✗ | dst[6] |= lut[mask++]; | |
500 | ✗ | dst[7] |= lut[mask]; | |
501 | ✗ | dst += 8; | |
502 | ✗ | } while (--buf_size); | |
503 | } | ||
504 | |||
505 | #define DECODE_HAM_PLANE32(x) \ | ||
506 | first = buf[x] << 1; \ | ||
507 | second = buf[(x)+1] << 1; \ | ||
508 | delta &= pal[first++]; \ | ||
509 | delta |= pal[first]; \ | ||
510 | dst[x] = delta; \ | ||
511 | delta &= pal[second++]; \ | ||
512 | delta |= pal[second]; \ | ||
513 | dst[(x)+1] = delta | ||
514 | |||
515 | /** | ||
516 | * Converts one line of HAM6/8-encoded chunky buffer to 24bpp. | ||
517 | * | ||
518 | * @param dst the destination 24bpp buffer | ||
519 | * @param buf the source 8bpp chunky buffer | ||
520 | * @param pal the HAM decode table | ||
521 | * @param buf_size the plane size in bytes | ||
522 | */ | ||
523 | ✗ | static void decode_ham_plane32(uint32_t *dst, const uint8_t *buf, | |
524 | const uint32_t *const pal, unsigned buf_size) | ||
525 | { | ||
526 | ✗ | uint32_t delta = pal[1]; /* first palette entry */ | |
527 | do { | ||
528 | uint32_t first, second; | ||
529 | ✗ | DECODE_HAM_PLANE32(0); | |
530 | ✗ | DECODE_HAM_PLANE32(2); | |
531 | ✗ | DECODE_HAM_PLANE32(4); | |
532 | ✗ | DECODE_HAM_PLANE32(6); | |
533 | ✗ | buf += 8; | |
534 | ✗ | dst += 8; | |
535 | ✗ | } while (--buf_size); | |
536 | } | ||
537 | |||
538 | ✗ | static void lookup_pal_indicies(uint32_t *dst, const uint32_t *buf, | |
539 | const uint32_t *const pal, unsigned width) | ||
540 | { | ||
541 | do { | ||
542 | ✗ | *dst++ = pal[*buf++]; | |
543 | ✗ | } while (--width); | |
544 | } | ||
545 | |||
546 | /** | ||
547 | * Decode one complete byterun1 encoded line. | ||
548 | * | ||
549 | * @param dst the destination buffer where to store decompressed bitstream | ||
550 | * @param dst_size the destination plane size in bytes | ||
551 | * @param buf the source byterun1 compressed bitstream | ||
552 | * @param buf_end the EOF of source byterun1 compressed bitstream | ||
553 | * @return number of consumed bytes in byterun1 compressed bitstream | ||
554 | */ | ||
555 | 240 | static int decode_byterun(uint8_t *dst, int dst_size, | |
556 | GetByteContext *gb) | ||
557 | { | ||
558 | unsigned x; | ||
559 |
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10365 | for (x = 0; x < dst_size && bytestream2_get_bytes_left(gb) > 0;) { |
560 | unsigned length; | ||
561 | 10125 | const int8_t value = bytestream2_get_byte(gb); | |
562 |
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10125 | if (value >= 0) { |
563 |
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4486 | length = FFMIN3(value + 1, dst_size - x, bytestream2_get_bytes_left(gb)); |
564 | 4486 | bytestream2_get_buffer(gb, dst + x, length); | |
565 |
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4486 | if (length < value + 1) |
566 | ✗ | bytestream2_skip(gb, value + 1 - length); | |
567 |
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5639 | } else if (value > -128) { |
568 | 5639 | length = FFMIN(-value + 1, dst_size - x); | |
569 | 5639 | memset(dst + x, bytestream2_get_byte(gb), length); | |
570 | } else { // noop | ||
571 | ✗ | continue; | |
572 | } | ||
573 | 10125 | x += length; | |
574 | } | ||
575 |
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240 | if (x < dst_size) { |
576 | ✗ | av_log(NULL, AV_LOG_WARNING, "decode_byterun ended before plane size\n"); | |
577 | ✗ | memset(dst+x, 0, dst_size - x); | |
578 | } | ||
579 | 240 | return bytestream2_tell(gb); | |
580 | } | ||
581 | |||
582 | ✗ | static int decode_byterun2(uint8_t *dst, int height, int line_size, | |
583 | GetByteContext *gb) | ||
584 | { | ||
585 | GetByteContext cmds; | ||
586 | unsigned count; | ||
587 | ✗ | int i, y_pos = 0, x_pos = 0; | |
588 | |||
589 | ✗ | if (bytestream2_get_be32(gb) != MKBETAG('V', 'D', 'A', 'T')) | |
590 | ✗ | return 0; | |
591 | |||
592 | ✗ | bytestream2_skip(gb, 4); | |
593 | ✗ | count = bytestream2_get_be16(gb) - 2; | |
594 | ✗ | if (bytestream2_get_bytes_left(gb) < count) | |
595 | ✗ | return 0; | |
596 | |||
597 | ✗ | bytestream2_init(&cmds, gb->buffer, count); | |
598 | ✗ | bytestream2_skip(gb, count); | |
599 | |||
600 | ✗ | for (i = 0; i < count && x_pos < line_size; i++) { | |
601 | ✗ | int8_t cmd = bytestream2_get_byte(&cmds); | |
602 | int l, r; | ||
603 | |||
604 | ✗ | if (cmd == 0) { | |
605 | ✗ | l = bytestream2_get_be16(gb); | |
606 | ✗ | while (l-- > 0 && x_pos < line_size) { | |
607 | ✗ | dst[x_pos + y_pos * line_size ] = bytestream2_get_byte(gb); | |
608 | ✗ | dst[x_pos + y_pos++ * line_size + 1] = bytestream2_get_byte(gb); | |
609 | ✗ | if (y_pos >= height) { | |
610 | ✗ | y_pos = 0; | |
611 | ✗ | x_pos += 2; | |
612 | } | ||
613 | } | ||
614 | ✗ | } else if (cmd < 0) { | |
615 | ✗ | l = -cmd; | |
616 | ✗ | while (l-- > 0 && x_pos < line_size) { | |
617 | ✗ | dst[x_pos + y_pos * line_size ] = bytestream2_get_byte(gb); | |
618 | ✗ | dst[x_pos + y_pos++ * line_size + 1] = bytestream2_get_byte(gb); | |
619 | ✗ | if (y_pos >= height) { | |
620 | ✗ | y_pos = 0; | |
621 | ✗ | x_pos += 2; | |
622 | } | ||
623 | } | ||
624 | ✗ | } else if (cmd == 1) { | |
625 | ✗ | l = bytestream2_get_be16(gb); | |
626 | ✗ | r = bytestream2_get_be16(gb); | |
627 | ✗ | while (l-- > 0 && x_pos < line_size) { | |
628 | ✗ | dst[x_pos + y_pos * line_size ] = r >> 8; | |
629 | ✗ | dst[x_pos + y_pos++ * line_size + 1] = r & 0xFF; | |
630 | ✗ | if (y_pos >= height) { | |
631 | ✗ | y_pos = 0; | |
632 | ✗ | x_pos += 2; | |
633 | } | ||
634 | } | ||
635 | } else { | ||
636 | ✗ | l = cmd; | |
637 | ✗ | r = bytestream2_get_be16(gb); | |
638 | ✗ | while (l-- > 0 && x_pos < line_size) { | |
639 | ✗ | dst[x_pos + y_pos * line_size ] = r >> 8; | |
640 | ✗ | dst[x_pos + y_pos++ * line_size + 1] = r & 0xFF; | |
641 | ✗ | if (y_pos >= height) { | |
642 | ✗ | y_pos = 0; | |
643 | ✗ | x_pos += 2; | |
644 | } | ||
645 | } | ||
646 | } | ||
647 | } | ||
648 | |||
649 | ✗ | return bytestream2_tell(gb); | |
650 | } | ||
651 | |||
652 | #define DECODE_RGBX_COMMON(type) \ | ||
653 | if (!length) { \ | ||
654 | length = bytestream2_get_byte(gb); \ | ||
655 | if (!length) { \ | ||
656 | length = bytestream2_get_be16(gb); \ | ||
657 | if (!length) \ | ||
658 | return; \ | ||
659 | } \ | ||
660 | } \ | ||
661 | for (i = 0; i < length; i++) { \ | ||
662 | *(type *)(dst + y*linesize + x * sizeof(type)) = pixel; \ | ||
663 | x += 1; \ | ||
664 | if (x >= width) { \ | ||
665 | y += 1; \ | ||
666 | if (y >= height) \ | ||
667 | return; \ | ||
668 | x = 0; \ | ||
669 | } \ | ||
670 | } | ||
671 | |||
672 | /** | ||
673 | * Decode RGB8 buffer | ||
674 | * @param[out] dst Destination buffer | ||
675 | * @param width Width of destination buffer (pixels) | ||
676 | * @param height Height of destination buffer (pixels) | ||
677 | * @param linesize Line size of destination buffer (bytes) | ||
678 | */ | ||
679 | ✗ | static void decode_rgb8(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) | |
680 | { | ||
681 | ✗ | int x = 0, y = 0, i, length; | |
682 | ✗ | while (bytestream2_get_bytes_left(gb) >= 4) { | |
683 | ✗ | uint32_t pixel = 0xFF000000 | bytestream2_get_be24(gb); | |
684 | ✗ | length = bytestream2_get_byte(gb) & 0x7F; | |
685 | ✗ | DECODE_RGBX_COMMON(uint32_t) | |
686 | } | ||
687 | } | ||
688 | |||
689 | /** | ||
690 | * Decode RGBN buffer | ||
691 | * @param[out] dst Destination buffer | ||
692 | * @param width Width of destination buffer (pixels) | ||
693 | * @param height Height of destination buffer (pixels) | ||
694 | * @param linesize Line size of destination buffer (bytes) | ||
695 | */ | ||
696 | ✗ | static void decode_rgbn(GetByteContext *gb, uint8_t *dst, int width, int height, int linesize) | |
697 | { | ||
698 | ✗ | int x = 0, y = 0, i, length; | |
699 | ✗ | while (bytestream2_get_bytes_left(gb) >= 2) { | |
700 | ✗ | uint32_t pixel = bytestream2_get_be16u(gb); | |
701 | ✗ | length = pixel & 0x7; | |
702 | ✗ | pixel >>= 4; | |
703 | ✗ | DECODE_RGBX_COMMON(uint16_t) | |
704 | } | ||
705 | } | ||
706 | |||
707 | /** | ||
708 | * Decode DEEP RLE 32-bit buffer | ||
709 | * @param[out] dst Destination buffer | ||
710 | * @param[in] src Source buffer | ||
711 | * @param src_size Source buffer size (bytes) | ||
712 | * @param width Width of destination buffer (pixels) | ||
713 | * @param height Height of destination buffer (pixels) | ||
714 | * @param linesize Line size of destination buffer (bytes) | ||
715 | */ | ||
716 | ✗ | static void decode_deep_rle32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize) | |
717 | { | ||
718 | ✗ | const uint8_t *src_end = src + src_size; | |
719 | ✗ | int x = 0, y = 0, i; | |
720 | ✗ | while (src_end - src >= 5) { | |
721 | int opcode; | ||
722 | ✗ | opcode = *(int8_t *)src++; | |
723 | ✗ | if (opcode >= 0) { | |
724 | ✗ | int size = opcode + 1; | |
725 | ✗ | for (i = 0; i < size; i++) { | |
726 | ✗ | int length = FFMIN(size - i, width - x); | |
727 | ✗ | if (src_end - src < length * 4) | |
728 | ✗ | return; | |
729 | ✗ | memcpy(dst + y*linesize + x * 4, src, length * 4); | |
730 | ✗ | src += length * 4; | |
731 | ✗ | x += length; | |
732 | ✗ | i += length; | |
733 | ✗ | if (x >= width) { | |
734 | ✗ | x = 0; | |
735 | ✗ | y += 1; | |
736 | ✗ | if (y >= height) | |
737 | ✗ | return; | |
738 | } | ||
739 | } | ||
740 | } else { | ||
741 | ✗ | int size = -opcode + 1; | |
742 | ✗ | uint32_t pixel = AV_RN32(src); | |
743 | ✗ | for (i = 0; i < size; i++) { | |
744 | ✗ | *(uint32_t *)(dst + y*linesize + x * 4) = pixel; | |
745 | ✗ | x += 1; | |
746 | ✗ | if (x >= width) { | |
747 | ✗ | x = 0; | |
748 | ✗ | y += 1; | |
749 | ✗ | if (y >= height) | |
750 | ✗ | return; | |
751 | } | ||
752 | } | ||
753 | ✗ | src += 4; | |
754 | } | ||
755 | } | ||
756 | } | ||
757 | |||
758 | /** | ||
759 | * Decode DEEP TVDC 32-bit buffer | ||
760 | * @param[out] dst Destination buffer | ||
761 | * @param[in] src Source buffer | ||
762 | * @param src_size Source buffer size (bytes) | ||
763 | * @param width Width of destination buffer (pixels) | ||
764 | * @param height Height of destination buffer (pixels) | ||
765 | * @param linesize Line size of destination buffer (bytes) | ||
766 | * @param[int] tvdc TVDC lookup table | ||
767 | */ | ||
768 | ✗ | static void decode_deep_tvdc32(uint8_t *dst, const uint8_t *src, int src_size, int width, int height, int linesize, const int16_t *tvdc) | |
769 | { | ||
770 | ✗ | int x = 0, y = 0, plane = 0; | |
771 | ✗ | int8_t pixel = 0; | |
772 | int i, j; | ||
773 | |||
774 | ✗ | for (i = 0; i < src_size * 2;) { | |
775 | #define GETNIBBLE ((i & 1) ? (src[i>>1] & 0xF) : (src[i>>1] >> 4)) | ||
776 | ✗ | int d = tvdc[GETNIBBLE]; | |
777 | ✗ | i++; | |
778 | ✗ | if (d) { | |
779 | ✗ | pixel += d; | |
780 | ✗ | dst[y * linesize + x*4 + plane] = pixel; | |
781 | ✗ | x++; | |
782 | } else { | ||
783 | ✗ | if (i >= src_size * 2) | |
784 | ✗ | return; | |
785 | ✗ | d = GETNIBBLE + 1; | |
786 | ✗ | i++; | |
787 | ✗ | d = FFMIN(d, width - x); | |
788 | ✗ | for (j = 0; j < d; j++) { | |
789 | ✗ | dst[y * linesize + x*4 + plane] = pixel; | |
790 | ✗ | x++; | |
791 | } | ||
792 | } | ||
793 | ✗ | if (x >= width) { | |
794 | ✗ | plane++; | |
795 | ✗ | if (plane >= 4) { | |
796 | ✗ | y++; | |
797 | ✗ | if (y >= height) | |
798 | ✗ | return; | |
799 | ✗ | plane = 0; | |
800 | } | ||
801 | ✗ | x = 0; | |
802 | ✗ | pixel = 0; | |
803 | ✗ | i = (i + 1) & ~1; | |
804 | } | ||
805 | } | ||
806 | } | ||
807 | |||
808 | ✗ | static void decode_short_horizontal_delta(uint8_t *dst, | |
809 | const uint8_t *buf, const uint8_t *buf_end, | ||
810 | int w, int bpp, int dst_size) | ||
811 | { | ||
812 | ✗ | int planepitch = FFALIGN(w, 16) >> 3; | |
813 | ✗ | int pitch = planepitch * bpp; | |
814 | GetByteContext ptrs, gb; | ||
815 | PutByteContext pb; | ||
816 | unsigned ofssrc, pos; | ||
817 | int i, k; | ||
818 | |||
819 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
820 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
821 | |||
822 | ✗ | for (k = 0; k < bpp; k++) { | |
823 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
824 | ✗ | pos = 0; | |
825 | |||
826 | ✗ | if (!ofssrc) | |
827 | ✗ | continue; | |
828 | |||
829 | ✗ | if (ofssrc >= buf_end - buf) | |
830 | ✗ | continue; | |
831 | |||
832 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
833 | ✗ | while (bytestream2_peek_be16(&gb) != 0xFFFF && bytestream2_get_bytes_left(&gb) > 3) { | |
834 | ✗ | int16_t offset = bytestream2_get_be16(&gb); | |
835 | unsigned noffset; | ||
836 | |||
837 | ✗ | if (offset >= 0) { | |
838 | ✗ | unsigned data = bytestream2_get_be16(&gb); | |
839 | |||
840 | ✗ | pos += offset * 2; | |
841 | ✗ | noffset = (pos / planepitch) * pitch + (pos % planepitch) + k * planepitch; | |
842 | ✗ | bytestream2_seek_p(&pb, noffset, SEEK_SET); | |
843 | ✗ | bytestream2_put_be16(&pb, data); | |
844 | } else { | ||
845 | ✗ | uint16_t count = bytestream2_get_be16(&gb); | |
846 | |||
847 | ✗ | pos += 2 * -(offset + 2); | |
848 | ✗ | for (i = 0; i < count; i++) { | |
849 | ✗ | uint16_t data = bytestream2_get_be16(&gb); | |
850 | |||
851 | ✗ | pos += 2; | |
852 | ✗ | noffset = (pos / planepitch) * pitch + (pos % planepitch) + k * planepitch; | |
853 | ✗ | bytestream2_seek_p(&pb, noffset, SEEK_SET); | |
854 | ✗ | bytestream2_put_be16(&pb, data); | |
855 | } | ||
856 | } | ||
857 | } | ||
858 | } | ||
859 | } | ||
860 | |||
861 | ✗ | static void decode_byte_vertical_delta(uint8_t *dst, | |
862 | const uint8_t *buf, const uint8_t *buf_end, | ||
863 | int w, int xor, int bpp, int dst_size) | ||
864 | { | ||
865 | ✗ | int ncolumns = ((w + 15) / 16) * 2; | |
866 | ✗ | int dstpitch = ncolumns * bpp; | |
867 | unsigned ofsdst, ofssrc, opcode, x; | ||
868 | GetByteContext ptrs, gb; | ||
869 | PutByteContext pb; | ||
870 | int i, j, k; | ||
871 | |||
872 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
873 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
874 | |||
875 | ✗ | for (k = 0; k < bpp; k++) { | |
876 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
877 | |||
878 | ✗ | if (!ofssrc) | |
879 | ✗ | continue; | |
880 | |||
881 | ✗ | if (ofssrc >= buf_end - buf) | |
882 | ✗ | continue; | |
883 | |||
884 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
885 | ✗ | for (j = 0; j < ncolumns; j++) { | |
886 | ✗ | ofsdst = j + k * ncolumns; | |
887 | |||
888 | ✗ | i = bytestream2_get_byte(&gb); | |
889 | ✗ | while (i > 0) { | |
890 | ✗ | opcode = bytestream2_get_byte(&gb); | |
891 | |||
892 | ✗ | if (opcode == 0) { | |
893 | ✗ | opcode = bytestream2_get_byte(&gb); | |
894 | ✗ | x = bytestream2_get_byte(&gb); | |
895 | |||
896 | ✗ | while (opcode) { | |
897 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
898 | ✗ | if (xor && ofsdst < dst_size) { | |
899 | ✗ | bytestream2_put_byte(&pb, dst[ofsdst] ^ x); | |
900 | } else { | ||
901 | ✗ | bytestream2_put_byte(&pb, x); | |
902 | } | ||
903 | ✗ | ofsdst += dstpitch; | |
904 | ✗ | opcode--; | |
905 | } | ||
906 | ✗ | } else if (opcode < 0x80) { | |
907 | ✗ | ofsdst += opcode * dstpitch; | |
908 | } else { | ||
909 | ✗ | opcode &= 0x7f; | |
910 | |||
911 | ✗ | while (opcode) { | |
912 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
913 | ✗ | if (xor && ofsdst < dst_size) { | |
914 | ✗ | bytestream2_put_byte(&pb, dst[ofsdst] ^ bytestream2_get_byte(&gb)); | |
915 | } else { | ||
916 | ✗ | bytestream2_put_byte(&pb, bytestream2_get_byte(&gb)); | |
917 | } | ||
918 | ✗ | ofsdst += dstpitch; | |
919 | ✗ | opcode--; | |
920 | } | ||
921 | } | ||
922 | ✗ | i--; | |
923 | } | ||
924 | } | ||
925 | } | ||
926 | } | ||
927 | |||
928 | ✗ | static void decode_delta_j(uint8_t *dst, | |
929 | const uint8_t *buf, const uint8_t *buf_end, | ||
930 | int w, int h, int bpp, int dst_size) | ||
931 | { | ||
932 | int32_t pitch; | ||
933 | uint8_t *ptr; | ||
934 | uint32_t type, flag, cols, groups, rows, bytes; | ||
935 | uint32_t offset; | ||
936 | ✗ | int planepitch_byte = (w + 7) / 8; | |
937 | ✗ | int planepitch = ((w + 15) / 16) * 2; | |
938 | int kludge_j, b, g, r, d; | ||
939 | GetByteContext gb; | ||
940 | |||
941 | ✗ | pitch = planepitch * bpp; | |
942 | ✗ | kludge_j = w < 320 ? (320 - w) / 8 / 2 : 0; | |
943 | |||
944 | ✗ | bytestream2_init(&gb, buf, buf_end - buf); | |
945 | |||
946 | ✗ | while (bytestream2_get_bytes_left(&gb) >= 2) { | |
947 | ✗ | type = bytestream2_get_be16(&gb); | |
948 | |||
949 | ✗ | switch (type) { | |
950 | ✗ | case 0: | |
951 | ✗ | return; | |
952 | ✗ | case 1: | |
953 | ✗ | flag = bytestream2_get_be16(&gb); | |
954 | ✗ | cols = bytestream2_get_be16(&gb); | |
955 | ✗ | groups = bytestream2_get_be16(&gb); | |
956 | |||
957 | ✗ | for (g = 0; g < groups; g++) { | |
958 | ✗ | offset = bytestream2_get_be16(&gb); | |
959 | |||
960 | ✗ | if (cols * bpp == 0 || bytestream2_get_bytes_left(&gb) < cols * bpp) { | |
961 | ✗ | av_log(NULL, AV_LOG_ERROR, "cols*bpp is invalid (%"PRId32"*%d)", cols, bpp); | |
962 | ✗ | return; | |
963 | } | ||
964 | |||
965 | ✗ | if (kludge_j) | |
966 | ✗ | offset = ((offset / (320 / 8)) * pitch) + (offset % (320 / 8)) - kludge_j; | |
967 | else | ||
968 | ✗ | offset = ((offset / planepitch_byte) * pitch) + (offset % planepitch_byte); | |
969 | |||
970 | ✗ | for (b = 0; b < cols; b++) { | |
971 | ✗ | for (d = 0; d < bpp; d++) { | |
972 | ✗ | uint8_t value = bytestream2_get_byte(&gb); | |
973 | |||
974 | ✗ | if (offset >= dst_size) | |
975 | ✗ | return; | |
976 | ✗ | ptr = dst + offset; | |
977 | |||
978 | ✗ | if (flag) | |
979 | ✗ | ptr[0] ^= value; | |
980 | else | ||
981 | ✗ | ptr[0] = value; | |
982 | |||
983 | ✗ | offset += planepitch; | |
984 | } | ||
985 | } | ||
986 | ✗ | if ((cols * bpp) & 1) | |
987 | ✗ | bytestream2_skip(&gb, 1); | |
988 | } | ||
989 | ✗ | break; | |
990 | ✗ | case 2: | |
991 | ✗ | flag = bytestream2_get_be16(&gb); | |
992 | ✗ | rows = bytestream2_get_be16(&gb); | |
993 | ✗ | bytes = bytestream2_get_be16(&gb); | |
994 | ✗ | groups = bytestream2_get_be16(&gb); | |
995 | |||
996 | ✗ | for (g = 0; g < groups; g++) { | |
997 | ✗ | offset = bytestream2_get_be16(&gb); | |
998 | |||
999 | ✗ | if (kludge_j) | |
1000 | ✗ | offset = ((offset / (320 / 8)) * pitch) + (offset % (320/ 8)) - kludge_j; | |
1001 | else | ||
1002 | ✗ | offset = ((offset / planepitch_byte) * pitch) + (offset % planepitch_byte); | |
1003 | |||
1004 | ✗ | for (r = 0; r < rows; r++) { | |
1005 | ✗ | for (d = 0; d < bpp; d++) { | |
1006 | ✗ | unsigned noffset = offset + (r * pitch) + d * planepitch; | |
1007 | |||
1008 | ✗ | if (!bytes || bytestream2_get_bytes_left(&gb) < bytes) { | |
1009 | ✗ | av_log(NULL, AV_LOG_ERROR, "bytes %"PRId32" is invalid", bytes); | |
1010 | ✗ | return; | |
1011 | } | ||
1012 | |||
1013 | ✗ | for (b = 0; b < bytes; b++) { | |
1014 | ✗ | uint8_t value = bytestream2_get_byte(&gb); | |
1015 | |||
1016 | ✗ | if (noffset >= dst_size) | |
1017 | ✗ | return; | |
1018 | ✗ | ptr = dst + noffset; | |
1019 | |||
1020 | ✗ | if (flag) | |
1021 | ✗ | ptr[0] ^= value; | |
1022 | else | ||
1023 | ✗ | ptr[0] = value; | |
1024 | |||
1025 | ✗ | noffset++; | |
1026 | } | ||
1027 | } | ||
1028 | } | ||
1029 | ✗ | if ((rows * bytes * bpp) & 1) | |
1030 | ✗ | bytestream2_skip(&gb, 1); | |
1031 | } | ||
1032 | ✗ | break; | |
1033 | ✗ | default: | |
1034 | ✗ | return; | |
1035 | } | ||
1036 | } | ||
1037 | } | ||
1038 | |||
1039 | ✗ | static void decode_short_vertical_delta(uint8_t *dst, | |
1040 | const uint8_t *buf, const uint8_t *buf_end, | ||
1041 | int w, int bpp, int dst_size) | ||
1042 | { | ||
1043 | ✗ | int ncolumns = (w + 15) >> 4; | |
1044 | ✗ | int dstpitch = ncolumns * bpp * 2; | |
1045 | unsigned ofsdst, ofssrc, ofsdata, opcode, x; | ||
1046 | GetByteContext ptrs, gb, dptrs, dgb; | ||
1047 | PutByteContext pb; | ||
1048 | int i, j, k; | ||
1049 | |||
1050 | ✗ | if (buf_end - buf <= 64) | |
1051 | ✗ | return; | |
1052 | |||
1053 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
1054 | ✗ | bytestream2_init(&dptrs, buf + 32, (buf_end - buf) - 32); | |
1055 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1056 | |||
1057 | ✗ | for (k = 0; k < bpp; k++) { | |
1058 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1059 | ✗ | ofsdata = bytestream2_get_be32(&dptrs); | |
1060 | |||
1061 | ✗ | if (!ofssrc) | |
1062 | ✗ | continue; | |
1063 | |||
1064 | ✗ | if (ofssrc >= buf_end - buf) | |
1065 | ✗ | return; | |
1066 | |||
1067 | ✗ | if (ofsdata >= buf_end - buf) | |
1068 | ✗ | return; | |
1069 | |||
1070 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1071 | ✗ | bytestream2_init(&dgb, buf + ofsdata, buf_end - (buf + ofsdata)); | |
1072 | ✗ | for (j = 0; j < ncolumns; j++) { | |
1073 | ✗ | ofsdst = (j + k * ncolumns) * 2; | |
1074 | |||
1075 | ✗ | i = bytestream2_get_byte(&gb); | |
1076 | ✗ | while (i > 0) { | |
1077 | ✗ | opcode = bytestream2_get_byte(&gb); | |
1078 | |||
1079 | ✗ | if (opcode == 0) { | |
1080 | ✗ | opcode = bytestream2_get_byte(&gb); | |
1081 | ✗ | x = bytestream2_get_be16(&dgb); | |
1082 | |||
1083 | ✗ | while (opcode) { | |
1084 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1085 | ✗ | bytestream2_put_be16(&pb, x); | |
1086 | ✗ | ofsdst += dstpitch; | |
1087 | ✗ | opcode--; | |
1088 | } | ||
1089 | ✗ | } else if (opcode < 0x80) { | |
1090 | ✗ | ofsdst += opcode * dstpitch; | |
1091 | } else { | ||
1092 | ✗ | opcode &= 0x7f; | |
1093 | |||
1094 | ✗ | while (opcode) { | |
1095 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1096 | ✗ | bytestream2_put_be16(&pb, bytestream2_get_be16(&dgb)); | |
1097 | ✗ | ofsdst += dstpitch; | |
1098 | ✗ | opcode--; | |
1099 | } | ||
1100 | } | ||
1101 | ✗ | i--; | |
1102 | } | ||
1103 | } | ||
1104 | } | ||
1105 | } | ||
1106 | |||
1107 | ✗ | static void decode_long_vertical_delta(uint8_t *dst, | |
1108 | const uint8_t *buf, const uint8_t *buf_end, | ||
1109 | int w, int bpp, int dst_size) | ||
1110 | { | ||
1111 | ✗ | int ncolumns = (w + 31) >> 5; | |
1112 | ✗ | int dstpitch = ((w + 15) / 16 * 2) * bpp; | |
1113 | unsigned ofsdst, ofssrc, ofsdata, opcode, x; | ||
1114 | GetByteContext ptrs, gb, dptrs, dgb; | ||
1115 | PutByteContext pb; | ||
1116 | int i, j, k, h; | ||
1117 | |||
1118 | ✗ | if (buf_end - buf <= 64) | |
1119 | ✗ | return; | |
1120 | |||
1121 | ✗ | h = (((w + 15) / 16 * 2) != ((w + 31) / 32 * 4)) ? 1 : 0; | |
1122 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
1123 | ✗ | bytestream2_init(&dptrs, buf + 32, (buf_end - buf) - 32); | |
1124 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1125 | |||
1126 | ✗ | for (k = 0; k < bpp; k++) { | |
1127 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1128 | ✗ | ofsdata = bytestream2_get_be32(&dptrs); | |
1129 | |||
1130 | ✗ | if (!ofssrc) | |
1131 | ✗ | continue; | |
1132 | |||
1133 | ✗ | if (ofssrc >= buf_end - buf) | |
1134 | ✗ | return; | |
1135 | |||
1136 | ✗ | if (ofsdata >= buf_end - buf) | |
1137 | ✗ | return; | |
1138 | |||
1139 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1140 | ✗ | bytestream2_init(&dgb, buf + ofsdata, buf_end - (buf + ofsdata)); | |
1141 | ✗ | for (j = 0; j < ncolumns; j++) { | |
1142 | ✗ | ofsdst = (j + k * ncolumns) * 4 - h * (2 * k); | |
1143 | |||
1144 | ✗ | i = bytestream2_get_byte(&gb); | |
1145 | ✗ | while (i > 0) { | |
1146 | ✗ | opcode = bytestream2_get_byte(&gb); | |
1147 | |||
1148 | ✗ | if (opcode == 0) { | |
1149 | ✗ | opcode = bytestream2_get_byte(&gb); | |
1150 | ✗ | if (h && (j == (ncolumns - 1))) { | |
1151 | ✗ | x = bytestream2_get_be16(&dgb); | |
1152 | ✗ | bytestream2_skip(&dgb, 2); | |
1153 | } else { | ||
1154 | ✗ | x = bytestream2_get_be32(&dgb); | |
1155 | } | ||
1156 | |||
1157 | ✗ | if (ofsdst + (opcode - 1LL) * dstpitch > bytestream2_size_p(&pb)) | |
1158 | ✗ | return; | |
1159 | |||
1160 | ✗ | while (opcode) { | |
1161 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1162 | ✗ | if (h && (j == (ncolumns - 1))) { | |
1163 | ✗ | bytestream2_put_be16(&pb, x); | |
1164 | } else { | ||
1165 | ✗ | bytestream2_put_be32(&pb, x); | |
1166 | } | ||
1167 | ✗ | ofsdst += dstpitch; | |
1168 | ✗ | opcode--; | |
1169 | } | ||
1170 | ✗ | } else if (opcode < 0x80) { | |
1171 | ✗ | ofsdst += opcode * dstpitch; | |
1172 | } else { | ||
1173 | ✗ | opcode &= 0x7f; | |
1174 | |||
1175 | ✗ | while (opcode) { | |
1176 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1177 | ✗ | if (h && (j == (ncolumns - 1))) { | |
1178 | ✗ | bytestream2_put_be16(&pb, bytestream2_get_be16(&dgb)); | |
1179 | ✗ | bytestream2_skip(&dgb, 2); | |
1180 | } else { | ||
1181 | ✗ | bytestream2_put_be32(&pb, bytestream2_get_be32(&dgb)); | |
1182 | } | ||
1183 | ✗ | ofsdst += dstpitch; | |
1184 | ✗ | opcode--; | |
1185 | } | ||
1186 | } | ||
1187 | ✗ | i--; | |
1188 | } | ||
1189 | } | ||
1190 | } | ||
1191 | } | ||
1192 | |||
1193 | ✗ | static void decode_short_vertical_delta2(uint8_t *dst, | |
1194 | const uint8_t *buf, const uint8_t *buf_end, | ||
1195 | int w, int bpp, int dst_size) | ||
1196 | { | ||
1197 | ✗ | int ncolumns = (w + 15) >> 4; | |
1198 | ✗ | int dstpitch = ncolumns * bpp * 2; | |
1199 | unsigned ofsdst, ofssrc, opcode, x; | ||
1200 | GetByteContext ptrs, gb; | ||
1201 | PutByteContext pb; | ||
1202 | int i, j, k; | ||
1203 | |||
1204 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
1205 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1206 | |||
1207 | ✗ | for (k = 0; k < bpp; k++) { | |
1208 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1209 | |||
1210 | ✗ | if (!ofssrc) | |
1211 | ✗ | continue; | |
1212 | |||
1213 | ✗ | if (ofssrc >= buf_end - buf) | |
1214 | ✗ | continue; | |
1215 | |||
1216 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1217 | ✗ | for (j = 0; j < ncolumns; j++) { | |
1218 | ✗ | ofsdst = (j + k * ncolumns) * 2; | |
1219 | |||
1220 | ✗ | i = bytestream2_get_be16(&gb); | |
1221 | ✗ | while (i > 0 && bytestream2_get_bytes_left(&gb) > 4) { | |
1222 | ✗ | opcode = bytestream2_get_be16(&gb); | |
1223 | |||
1224 | ✗ | if (opcode == 0) { | |
1225 | ✗ | opcode = bytestream2_get_be16(&gb); | |
1226 | ✗ | x = bytestream2_get_be16(&gb); | |
1227 | |||
1228 | ✗ | while (opcode && bytestream2_get_bytes_left_p(&pb) > 1) { | |
1229 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1230 | ✗ | bytestream2_put_be16(&pb, x); | |
1231 | ✗ | ofsdst += dstpitch; | |
1232 | ✗ | opcode--; | |
1233 | } | ||
1234 | ✗ | } else if (opcode < 0x8000) { | |
1235 | ✗ | ofsdst += opcode * dstpitch; | |
1236 | } else { | ||
1237 | ✗ | opcode &= 0x7fff; | |
1238 | |||
1239 | ✗ | while (opcode && bytestream2_get_bytes_left(&gb) > 1 && | |
1240 | ✗ | bytestream2_get_bytes_left_p(&pb) > 1) { | |
1241 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1242 | ✗ | bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); | |
1243 | ✗ | ofsdst += dstpitch; | |
1244 | ✗ | opcode--; | |
1245 | } | ||
1246 | } | ||
1247 | ✗ | i--; | |
1248 | } | ||
1249 | } | ||
1250 | } | ||
1251 | } | ||
1252 | |||
1253 | ✗ | static void decode_long_vertical_delta2(uint8_t *dst, | |
1254 | const uint8_t *buf, const uint8_t *buf_end, | ||
1255 | int w, int bpp, int dst_size) | ||
1256 | { | ||
1257 | ✗ | int ncolumns = (w + 31) >> 5; | |
1258 | ✗ | int dstpitch = ((w + 15) / 16 * 2) * bpp; | |
1259 | unsigned ofsdst, ofssrc, opcode, x; | ||
1260 | ✗ | unsigned skip = 0x80000000, mask = skip - 1; | |
1261 | GetByteContext ptrs, gb; | ||
1262 | PutByteContext pb; | ||
1263 | int i, j, k, h; | ||
1264 | |||
1265 | ✗ | h = (((w + 15) / 16 * 2) != ((w + 31) / 32 * 4)) ? 1 : 0; | |
1266 | ✗ | bytestream2_init(&ptrs, buf, buf_end - buf); | |
1267 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1268 | |||
1269 | ✗ | for (k = 0; k < bpp; k++) { | |
1270 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1271 | |||
1272 | ✗ | if (!ofssrc) | |
1273 | ✗ | continue; | |
1274 | |||
1275 | ✗ | if (ofssrc >= buf_end - buf) | |
1276 | ✗ | continue; | |
1277 | |||
1278 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1279 | ✗ | for (j = 0; j < ncolumns; j++) { | |
1280 | ✗ | ofsdst = (j + k * ncolumns) * 4 - h * (2 * k); | |
1281 | |||
1282 | ✗ | if (h && (j == (ncolumns - 1))) { | |
1283 | ✗ | skip = 0x8000; | |
1284 | ✗ | mask = skip - 1; | |
1285 | } | ||
1286 | |||
1287 | ✗ | i = bytestream2_get_be32(&gb); | |
1288 | ✗ | while (i > 0 && bytestream2_get_bytes_left(&gb) > 4) { | |
1289 | ✗ | opcode = bytestream2_get_be32(&gb); | |
1290 | |||
1291 | ✗ | if (opcode == 0) { | |
1292 | ✗ | if (h && (j == ncolumns - 1)) { | |
1293 | ✗ | opcode = bytestream2_get_be16(&gb); | |
1294 | ✗ | x = bytestream2_get_be16(&gb); | |
1295 | } else { | ||
1296 | ✗ | opcode = bytestream2_get_be32(&gb); | |
1297 | ✗ | x = bytestream2_get_be32(&gb); | |
1298 | } | ||
1299 | |||
1300 | ✗ | if (ofsdst + (opcode - 1LL) * dstpitch > bytestream2_size_p(&pb)) | |
1301 | ✗ | return; | |
1302 | |||
1303 | ✗ | while (opcode && bytestream2_get_bytes_left_p(&pb) > 1) { | |
1304 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1305 | ✗ | if (h && (j == ncolumns - 1)) | |
1306 | ✗ | bytestream2_put_be16(&pb, x); | |
1307 | else | ||
1308 | ✗ | bytestream2_put_be32(&pb, x); | |
1309 | ✗ | ofsdst += dstpitch; | |
1310 | ✗ | opcode--; | |
1311 | } | ||
1312 | ✗ | } else if (opcode < skip) { | |
1313 | ✗ | ofsdst += opcode * dstpitch; | |
1314 | } else { | ||
1315 | ✗ | opcode &= mask; | |
1316 | |||
1317 | ✗ | while (opcode && bytestream2_get_bytes_left(&gb) > 1 && | |
1318 | ✗ | bytestream2_get_bytes_left_p(&pb) > 1) { | |
1319 | ✗ | bytestream2_seek_p(&pb, ofsdst, SEEK_SET); | |
1320 | ✗ | if (h && (j == ncolumns - 1)) { | |
1321 | ✗ | bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); | |
1322 | } else { | ||
1323 | ✗ | bytestream2_put_be32(&pb, bytestream2_get_be32(&gb)); | |
1324 | } | ||
1325 | ✗ | ofsdst += dstpitch; | |
1326 | ✗ | opcode--; | |
1327 | } | ||
1328 | } | ||
1329 | ✗ | i--; | |
1330 | } | ||
1331 | } | ||
1332 | } | ||
1333 | } | ||
1334 | |||
1335 | ✗ | static void decode_delta_d(uint8_t *dst, | |
1336 | const uint8_t *buf, const uint8_t *buf_end, | ||
1337 | int w, int flag, int bpp, int dst_size) | ||
1338 | { | ||
1339 | ✗ | int planepitch = FFALIGN(w, 16) >> 3; | |
1340 | ✗ | int pitch = planepitch * bpp; | |
1341 | ✗ | int planepitch_byte = (w + 7) / 8; | |
1342 | unsigned entries, ofssrc; | ||
1343 | GetByteContext gb, ptrs; | ||
1344 | PutByteContext pb; | ||
1345 | int k; | ||
1346 | |||
1347 | ✗ | if (buf_end - buf <= 4 * bpp) | |
1348 | ✗ | return; | |
1349 | |||
1350 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1351 | ✗ | bytestream2_init(&ptrs, buf, bpp * 4); | |
1352 | |||
1353 | ✗ | for (k = 0; k < bpp; k++) { | |
1354 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1355 | |||
1356 | ✗ | if (!ofssrc) | |
1357 | ✗ | continue; | |
1358 | |||
1359 | ✗ | if (ofssrc >= buf_end - buf) | |
1360 | ✗ | continue; | |
1361 | |||
1362 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1363 | |||
1364 | ✗ | entries = bytestream2_get_be32(&gb); | |
1365 | ✗ | if (entries * 8LL > bytestream2_get_bytes_left(&gb)) | |
1366 | ✗ | return; | |
1367 | |||
1368 | ✗ | while (entries && bytestream2_get_bytes_left(&gb) >= 8) { | |
1369 | ✗ | int32_t opcode = bytestream2_get_be32(&gb); | |
1370 | ✗ | unsigned offset = bytestream2_get_be32(&gb); | |
1371 | |||
1372 | ✗ | bytestream2_seek_p(&pb, (offset / planepitch_byte) * pitch + (offset % planepitch_byte) + k * planepitch, SEEK_SET); | |
1373 | ✗ | if (opcode >= 0) { | |
1374 | ✗ | uint32_t x = bytestream2_get_be32(&gb); | |
1375 | ✗ | if (opcode && 4 + (opcode - 1LL) * pitch > bytestream2_get_bytes_left_p(&pb)) | |
1376 | ✗ | continue; | |
1377 | ✗ | while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { | |
1378 | ✗ | bytestream2_put_be32(&pb, x); | |
1379 | ✗ | bytestream2_skip_p(&pb, pitch - 4); | |
1380 | ✗ | opcode--; | |
1381 | } | ||
1382 | } else { | ||
1383 | ✗ | while (opcode && bytestream2_get_bytes_left(&gb) > 0) { | |
1384 | ✗ | bytestream2_put_be32(&pb, bytestream2_get_be32(&gb)); | |
1385 | ✗ | bytestream2_skip_p(&pb, pitch - 4); | |
1386 | ✗ | opcode++; | |
1387 | } | ||
1388 | } | ||
1389 | ✗ | entries--; | |
1390 | } | ||
1391 | } | ||
1392 | } | ||
1393 | |||
1394 | ✗ | static void decode_delta_e(uint8_t *dst, | |
1395 | const uint8_t *buf, const uint8_t *buf_end, | ||
1396 | int w, int flag, int bpp, int dst_size) | ||
1397 | { | ||
1398 | ✗ | int planepitch = FFALIGN(w, 16) >> 3; | |
1399 | ✗ | int pitch = planepitch * bpp; | |
1400 | ✗ | int planepitch_byte = (w + 7) / 8; | |
1401 | unsigned entries, ofssrc; | ||
1402 | GetByteContext gb, ptrs; | ||
1403 | PutByteContext pb; | ||
1404 | int k; | ||
1405 | |||
1406 | ✗ | if (buf_end - buf <= 4 * bpp) | |
1407 | ✗ | return; | |
1408 | |||
1409 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1410 | ✗ | bytestream2_init(&ptrs, buf, bpp * 4); | |
1411 | |||
1412 | ✗ | for (k = 0; k < bpp; k++) { | |
1413 | ✗ | ofssrc = bytestream2_get_be32(&ptrs); | |
1414 | |||
1415 | ✗ | if (!ofssrc) | |
1416 | ✗ | continue; | |
1417 | |||
1418 | ✗ | if (ofssrc >= buf_end - buf) | |
1419 | ✗ | continue; | |
1420 | |||
1421 | ✗ | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); | |
1422 | |||
1423 | ✗ | entries = bytestream2_get_be16(&gb); | |
1424 | ✗ | while (entries && bytestream2_get_bytes_left(&gb) >= 6) { | |
1425 | ✗ | int16_t opcode = bytestream2_get_be16(&gb); | |
1426 | ✗ | unsigned offset = bytestream2_get_be32(&gb); | |
1427 | |||
1428 | ✗ | bytestream2_seek_p(&pb, (offset / planepitch_byte) * pitch + (offset % planepitch_byte) + k * planepitch, SEEK_SET); | |
1429 | ✗ | if (opcode >= 0) { | |
1430 | ✗ | uint16_t x = bytestream2_get_be16(&gb); | |
1431 | ✗ | while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { | |
1432 | ✗ | bytestream2_put_be16(&pb, x); | |
1433 | ✗ | bytestream2_skip_p(&pb, pitch - 2); | |
1434 | ✗ | opcode--; | |
1435 | } | ||
1436 | } else { | ||
1437 | ✗ | opcode = -opcode; | |
1438 | ✗ | while (opcode && bytestream2_get_bytes_left(&gb) > 0) { | |
1439 | ✗ | bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); | |
1440 | ✗ | bytestream2_skip_p(&pb, pitch - 2); | |
1441 | ✗ | opcode--; | |
1442 | } | ||
1443 | } | ||
1444 | ✗ | entries--; | |
1445 | } | ||
1446 | } | ||
1447 | } | ||
1448 | |||
1449 | ✗ | static void decode_delta_l(uint8_t *dst, | |
1450 | const uint8_t *buf, const uint8_t *buf_end, | ||
1451 | int w, int flag, int bpp, int dst_size) | ||
1452 | { | ||
1453 | GetByteContext off0, off1, dgb, ogb; | ||
1454 | PutByteContext pb; | ||
1455 | unsigned poff0, poff1; | ||
1456 | int i, k, dstpitch; | ||
1457 | ✗ | int planepitch_byte = (w + 7) / 8; | |
1458 | ✗ | int planepitch = ((w + 15) / 16) * 2; | |
1459 | ✗ | int pitch = planepitch * bpp; | |
1460 | ✗ | int count = 0; | |
1461 | |||
1462 | ✗ | if (buf_end - buf <= 64) | |
1463 | ✗ | return; | |
1464 | |||
1465 | ✗ | bytestream2_init(&off0, buf, buf_end - buf); | |
1466 | ✗ | bytestream2_init(&off1, buf + 32, buf_end - (buf + 32)); | |
1467 | ✗ | bytestream2_init_writer(&pb, dst, dst_size); | |
1468 | |||
1469 | ✗ | dstpitch = flag ? (((w + 7) / 8) * bpp): 2; | |
1470 | |||
1471 | ✗ | for (k = 0; k < bpp; k++) { | |
1472 | ✗ | poff0 = bytestream2_get_be32(&off0); | |
1473 | ✗ | poff1 = bytestream2_get_be32(&off1); | |
1474 | |||
1475 | ✗ | if (!poff0) | |
1476 | ✗ | continue; | |
1477 | |||
1478 | ✗ | if (2LL * poff0 >= buf_end - buf) | |
1479 | ✗ | return; | |
1480 | |||
1481 | ✗ | if (2LL * poff1 >= buf_end - buf) | |
1482 | ✗ | return; | |
1483 | |||
1484 | ✗ | bytestream2_init(&dgb, buf + 2 * poff0, buf_end - (buf + 2 * poff0)); | |
1485 | ✗ | bytestream2_init(&ogb, buf + 2 * poff1, buf_end - (buf + 2 * poff1)); | |
1486 | |||
1487 | ✗ | while (bytestream2_peek_be16(&ogb) != 0xFFFF && bytestream2_get_bytes_left(&ogb) >= 4) { | |
1488 | ✗ | uint32_t offset = bytestream2_get_be16(&ogb); | |
1489 | ✗ | int16_t cnt = bytestream2_get_be16(&ogb); | |
1490 | uint16_t data; | ||
1491 | |||
1492 | ✗ | if (count > dst_size) | |
1493 | ✗ | break; | |
1494 | ✗ | offset = ((2 * offset) / planepitch_byte) * pitch + ((2 * offset) % planepitch_byte) + k * planepitch; | |
1495 | ✗ | if (cnt < 0) { | |
1496 | ✗ | if (bytestream2_get_bytes_left(&dgb) < 2) | |
1497 | ✗ | break; | |
1498 | ✗ | bytestream2_seek_p(&pb, offset, SEEK_SET); | |
1499 | ✗ | cnt = -cnt; | |
1500 | ✗ | data = bytestream2_get_be16(&dgb); | |
1501 | ✗ | count += cnt; | |
1502 | ✗ | for (i = 0; i < cnt; i++) { | |
1503 | ✗ | bytestream2_put_be16(&pb, data); | |
1504 | ✗ | bytestream2_skip_p(&pb, dstpitch - 2); | |
1505 | } | ||
1506 | } else { | ||
1507 | ✗ | if (bytestream2_get_bytes_left(&dgb) < 2*cnt) | |
1508 | ✗ | break; | |
1509 | ✗ | bytestream2_seek_p(&pb, offset, SEEK_SET); | |
1510 | ✗ | count += cnt; | |
1511 | ✗ | for (i = 0; i < cnt; i++) { | |
1512 | ✗ | data = bytestream2_get_be16(&dgb); | |
1513 | ✗ | bytestream2_put_be16(&pb, data); | |
1514 | ✗ | bytestream2_skip_p(&pb, dstpitch - 2); | |
1515 | } | ||
1516 | } | ||
1517 | } | ||
1518 | } | ||
1519 | } | ||
1520 | |||
1521 | ✗ | static int unsupported(AVCodecContext *avctx) | |
1522 | { | ||
1523 | ✗ | IffContext *s = avctx->priv_data; | |
1524 | ✗ | avpriv_request_sample(avctx, "bitmap (compression 0x%0x, bpp %i, ham %i, interlaced %i)", s->compression, s->bpp, s->ham, s->is_interlaced); | |
1525 | ✗ | return AVERROR_INVALIDDATA; | |
1526 | } | ||
1527 | |||
1528 | 2 | static int decode_frame(AVCodecContext *avctx, AVFrame *frame, | |
1529 | int *got_frame, AVPacket *avpkt) | ||
1530 | { | ||
1531 | 2 | IffContext *s = avctx->priv_data; | |
1532 | 2 | const uint8_t *buf = avpkt->data; | |
1533 | 2 | int buf_size = avpkt->size; | |
1534 | 2 | const uint8_t *buf_end = buf + buf_size; | |
1535 | int y, plane, res; | ||
1536 | 2 | GetByteContext *gb = &s->gb; | |
1537 | const AVPixFmtDescriptor *desc; | ||
1538 | |||
1539 | 2 | bytestream2_init(gb, avpkt->data, avpkt->size); | |
1540 | |||
1541 |
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2 | if ((res = extract_header(avctx, avpkt)) < 0) |
1542 | ✗ | return res; | |
1543 | |||
1544 |
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2 | if ((res = ff_get_buffer(avctx, frame, 0)) < 0) |
1545 | ✗ | return res; | |
1546 | 2 | s->frame = frame; | |
1547 | |||
1548 | 2 | buf += bytestream2_tell(gb); | |
1549 | 2 | buf_size -= bytestream2_tell(gb); | |
1550 | 2 | desc = av_pix_fmt_desc_get(avctx->pix_fmt); | |
1551 | |||
1552 |
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2 | if (!s->init && avctx->bits_per_coded_sample <= 8 - (s->masking == MASK_HAS_MASK) && |
1553 |
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2 | avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
1554 |
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2 | if ((res = cmap_read_palette(avctx, (uint32_t *)frame->data[1])) < 0) |
1555 | ✗ | return res; | |
1556 | ✗ | } else if (!s->init && avctx->bits_per_coded_sample <= 8 && | |
1557 | ✗ | avctx->pix_fmt == AV_PIX_FMT_RGB32) { | |
1558 | ✗ | if ((res = cmap_read_palette(avctx, s->mask_palbuf)) < 0) | |
1559 | ✗ | return res; | |
1560 | } | ||
1561 | 2 | s->init = 1; | |
1562 | |||
1563 |
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2 | if (s->compression <= 0xff && (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M'))) { |
1564 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8) | |
1565 | ✗ | memcpy(s->pal, s->frame->data[1], 256 * 4); | |
1566 | } | ||
1567 | |||
1568 |
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2 | switch (s->compression) { |
1569 | 1 | case 0x0: | |
1570 |
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1 | if (avctx->codec_tag == MKTAG('A', 'C', 'B', 'M')) { |
1571 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { | |
1572 | ✗ | memset(frame->data[0], 0, avctx->height * frame->linesize[0]); | |
1573 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1574 | ✗ | for (y = 0; y < avctx->height && buf < buf_end; y++) { | |
1575 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1576 | ✗ | decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); | |
1577 | ✗ | buf += s->planesize; | |
1578 | } | ||
1579 | } | ||
1580 | ✗ | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 | |
1581 | ✗ | memset(frame->data[0], 0, avctx->height * frame->linesize[0]); | |
1582 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1583 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1584 | ✗ | memset(s->ham_buf, 0, s->planesize * 8); | |
1585 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1586 | ✗ | const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize; | |
1587 | ✗ | if (start >= buf_end) | |
1588 | ✗ | break; | |
1589 | ✗ | decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane); | |
1590 | } | ||
1591 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1592 | } | ||
1593 | } else | ||
1594 | ✗ | return unsupported(avctx); | |
1595 |
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1 | } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { |
1596 | ✗ | int raw_width = avctx->width * (av_get_bits_per_pixel(desc) >> 3); | |
1597 | int x; | ||
1598 | ✗ | for (y = 0; y < avctx->height && buf < buf_end; y++) { | |
1599 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1600 | ✗ | memcpy(row, buf, FFMIN(raw_width, buf_end - buf)); | |
1601 | ✗ | buf += raw_width; | |
1602 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_BGR32) { | |
1603 | ✗ | for (x = 0; x < avctx->width; x++) | |
1604 | ✗ | row[4 * x + 3] = row[4 * x + 3] & 0xF0 | (row[4 * x + 3] >> 4); | |
1605 | } | ||
1606 | } | ||
1607 |
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1 | } else if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') || // interleaved |
1608 | ✗ | avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { | |
1609 |
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1 | if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) |
1610 | ✗ | memcpy(s->video[0], buf, FFMIN(buf_end - buf, s->video_size)); | |
1611 |
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1 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
1612 |
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241 | for (y = 0; y < avctx->height; y++) { |
1613 | 240 | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1614 | 240 | memset(row, 0, avctx->width); | |
1615 |
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2160 | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { |
1616 | 1920 | decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); | |
1617 | 1920 | buf += s->planesize; | |
1618 | } | ||
1619 | } | ||
1620 | ✗ | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 | |
1621 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1622 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1623 | ✗ | memset(s->ham_buf, 0, s->planesize * 8); | |
1624 | ✗ | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { | |
1625 | ✗ | decodeplane8(s->ham_buf, buf, FFMIN(s->planesize, buf_end - buf), plane); | |
1626 | ✗ | buf += s->planesize; | |
1627 | } | ||
1628 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1629 | } | ||
1630 | } else { // AV_PIX_FMT_BGR32 | ||
1631 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1632 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1633 | ✗ | memset(row, 0, avctx->width << 2); | |
1634 | ✗ | for (plane = 0; plane < s->bpp && buf < buf_end; plane++) { | |
1635 | ✗ | decodeplane32((uint32_t *)row, buf, | |
1636 | ✗ | FFMIN(s->planesize, buf_end - buf), plane); | |
1637 | ✗ | buf += s->planesize; | |
1638 | } | ||
1639 | } | ||
1640 | } | ||
1641 | ✗ | } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM | |
1642 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { | |
1643 | ✗ | for (y = 0; y < avctx->height && buf_end > buf; y++) { | |
1644 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1645 | ✗ | memcpy(row, buf, FFMIN(avctx->width, buf_end - buf)); | |
1646 | ✗ | buf += avctx->width + (avctx->width % 2); // padding if odd | |
1647 | } | ||
1648 | ✗ | } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 | |
1649 | ✗ | for (y = 0; y < avctx->height && buf_end > buf; y++) { | |
1650 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1651 | ✗ | memcpy(s->ham_buf, buf, FFMIN(avctx->width, buf_end - buf)); | |
1652 | ✗ | buf += avctx->width + (avctx->width & 1); // padding if odd | |
1653 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1654 | } | ||
1655 | } else | ||
1656 | ✗ | return unsupported(avctx); | |
1657 | } else { | ||
1658 | ✗ | return unsupported(avctx); | |
1659 | } | ||
1660 | 1 | break; | |
1661 | 1 | case 0x1: | |
1662 |
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1 | if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') || // interleaved |
1663 |
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1 | avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { |
1664 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { | |
1665 | ✗ | uint8_t *video = s->video[0]; | |
1666 | |||
1667 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1668 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1669 | ✗ | memset(row, 0, avctx->width); | |
1670 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1671 | ✗ | buf += decode_byterun(s->planebuf, s->planesize, gb); | |
1672 | ✗ | if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { | |
1673 | ✗ | memcpy(video, s->planebuf, s->planesize); | |
1674 | ✗ | video += s->planesize; | |
1675 | } | ||
1676 | ✗ | decodeplane8(row, s->planebuf, s->planesize, plane); | |
1677 | } | ||
1678 | } | ||
1679 | ✗ | } else if (avctx->bits_per_coded_sample <= 8) { //8-bit (+ mask) to AV_PIX_FMT_BGR32 | |
1680 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1681 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1682 | ✗ | memset(s->mask_buf, 0, avctx->width * sizeof(uint32_t)); | |
1683 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1684 | ✗ | buf += decode_byterun(s->planebuf, s->planesize, gb); | |
1685 | ✗ | decodeplane32(s->mask_buf, s->planebuf, s->planesize, plane); | |
1686 | } | ||
1687 | ✗ | lookup_pal_indicies((uint32_t *)row, s->mask_buf, s->mask_palbuf, avctx->width); | |
1688 | } | ||
1689 | ✗ | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 | |
1690 | ✗ | uint8_t *video = s->video[0]; | |
1691 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1692 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1693 | ✗ | memset(s->ham_buf, 0, s->planesize * 8); | |
1694 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1695 | ✗ | buf += decode_byterun(s->planebuf, s->planesize, gb); | |
1696 | ✗ | if (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M')) { | |
1697 | ✗ | memcpy(video, s->planebuf, s->planesize); | |
1698 | ✗ | video += s->planesize; | |
1699 | } | ||
1700 | ✗ | decodeplane8(s->ham_buf, s->planebuf, s->planesize, plane); | |
1701 | } | ||
1702 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1703 | } | ||
1704 | } else { // AV_PIX_FMT_BGR32 | ||
1705 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1706 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1707 | ✗ | memset(row, 0, avctx->width << 2); | |
1708 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1709 | ✗ | buf += decode_byterun(s->planebuf, s->planesize, gb); | |
1710 | ✗ | decodeplane32((uint32_t *)row, s->planebuf, s->planesize, plane); | |
1711 | } | ||
1712 | } | ||
1713 | } | ||
1714 |
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1 | } else if (avctx->codec_tag == MKTAG('P', 'B', 'M', ' ')) { // IFF-PBM |
1715 |
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1 | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { |
1716 |
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241 | for (y = 0; y < avctx->height; y++) { |
1717 | 240 | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1718 | 240 | buf += decode_byterun(row, avctx->width, gb); | |
1719 | } | ||
1720 | ✗ | } else if (s->ham) { // IFF-PBM: HAM to AV_PIX_FMT_BGR32 | |
1721 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1722 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1723 | ✗ | buf += decode_byterun(s->ham_buf, avctx->width, gb); | |
1724 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1725 | } | ||
1726 | } else | ||
1727 | ✗ | return unsupported(avctx); | |
1728 | ✗ | } else if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { // IFF-DEEP | |
1729 | ✗ | if (av_get_bits_per_pixel(desc) == 32) | |
1730 | ✗ | decode_deep_rle32(frame->data[0], buf, buf_size, avctx->width, avctx->height, frame->linesize[0]); | |
1731 | else | ||
1732 | ✗ | return unsupported(avctx); | |
1733 | ✗ | } else if (avctx->codec_tag == MKTAG('A', 'C', 'B', 'M')) { | |
1734 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { | |
1735 | ✗ | memset(frame->data[0], 0, avctx->height * frame->linesize[0]); | |
1736 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1737 | ✗ | for (y = 0; y < avctx->height && buf < buf_end; y++) { | |
1738 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1739 | ✗ | decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane); | |
1740 | ✗ | buf += s->planesize; | |
1741 | } | ||
1742 | } | ||
1743 | ✗ | } else if (s->ham) { // HAM to AV_PIX_FMT_BGR32 | |
1744 | ✗ | memset(frame->data[0], 0, avctx->height * frame->linesize[0]); | |
1745 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1746 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1747 | ✗ | memset(s->ham_buf, 0, s->planesize * 8); | |
1748 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1749 | ✗ | const uint8_t * start = buf + (plane * avctx->height + y) * s->planesize; | |
1750 | ✗ | if (start >= buf_end) | |
1751 | ✗ | break; | |
1752 | ✗ | decodeplane8(s->ham_buf, start, FFMIN(s->planesize, buf_end - start), plane); | |
1753 | } | ||
1754 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1755 | } | ||
1756 | } else { | ||
1757 | ✗ | return unsupported(avctx); | |
1758 | } | ||
1759 | } else { | ||
1760 | ✗ | return unsupported(avctx); | |
1761 | } | ||
1762 | 1 | break; | |
1763 | ✗ | case 0x2: | |
1764 | ✗ | if (avctx->codec_tag == MKTAG('I', 'L', 'B', 'M') && avctx->pix_fmt == AV_PIX_FMT_PAL8) { | |
1765 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1766 | ✗ | decode_byterun2(s->planebuf, avctx->height, s->planesize, gb); | |
1767 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1768 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1769 | ✗ | decodeplane8(row, s->planebuf + s->planesize * y, s->planesize, plane); | |
1770 | } | ||
1771 | } | ||
1772 | } else { | ||
1773 | ✗ | return unsupported(avctx); | |
1774 | } | ||
1775 | ✗ | break; | |
1776 | ✗ | case 0x4: | |
1777 | ✗ | if (avctx->codec_tag == MKTAG('R', 'G', 'B', '8') && avctx->pix_fmt == AV_PIX_FMT_RGB32) | |
1778 | ✗ | decode_rgb8(gb, frame->data[0], avctx->width, avctx->height, frame->linesize[0]); | |
1779 | ✗ | else if (avctx->codec_tag == MKTAG('R', 'G', 'B', 'N') && avctx->pix_fmt == AV_PIX_FMT_RGB444) | |
1780 | ✗ | decode_rgbn(gb, frame->data[0], avctx->width, avctx->height, frame->linesize[0]); | |
1781 | else | ||
1782 | ✗ | return unsupported(avctx); | |
1783 | ✗ | break; | |
1784 | ✗ | case 0x5: | |
1785 | ✗ | if (avctx->codec_tag == MKTAG('D', 'E', 'E', 'P')) { | |
1786 | ✗ | if (av_get_bits_per_pixel(desc) == 32) | |
1787 | ✗ | decode_deep_tvdc32(frame->data[0], buf, buf_size, avctx->width, avctx->height, frame->linesize[0], s->tvdc); | |
1788 | else | ||
1789 | ✗ | return unsupported(avctx); | |
1790 | } else | ||
1791 | ✗ | return unsupported(avctx); | |
1792 | ✗ | break; | |
1793 | ✗ | case 0x300: | |
1794 | case 0x301: | ||
1795 | ✗ | decode_short_horizontal_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); | |
1796 | ✗ | break; | |
1797 | ✗ | case 0x500: | |
1798 | case 0x501: | ||
1799 | ✗ | decode_byte_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->is_brush, s->bpp, s->video_size); | |
1800 | ✗ | break; | |
1801 | ✗ | case 0x700: | |
1802 | case 0x701: | ||
1803 | ✗ | if (s->is_short) | |
1804 | ✗ | decode_short_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); | |
1805 | else | ||
1806 | ✗ | decode_long_vertical_delta(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); | |
1807 | ✗ | break; | |
1808 | ✗ | case 0x800: | |
1809 | case 0x801: | ||
1810 | ✗ | if (s->is_short) | |
1811 | ✗ | decode_short_vertical_delta2(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); | |
1812 | else | ||
1813 | ✗ | decode_long_vertical_delta2(s->video[0], buf, buf_end, avctx->width, s->bpp, s->video_size); | |
1814 | ✗ | break; | |
1815 | ✗ | case 0x4a00: | |
1816 | case 0x4a01: | ||
1817 | ✗ | decode_delta_j(s->video[0], buf, buf_end, avctx->width, avctx->height, s->bpp, s->video_size); | |
1818 | ✗ | break; | |
1819 | ✗ | case 0x6400: | |
1820 | case 0x6401: | ||
1821 | ✗ | if (s->is_interlaced) | |
1822 | ✗ | return unsupported(avctx); | |
1823 | ✗ | decode_delta_d(s->video[0], buf, buf_end, avctx->width, s->is_interlaced, s->bpp, s->video_size); | |
1824 | ✗ | break; | |
1825 | ✗ | case 0x6500: | |
1826 | case 0x6501: | ||
1827 | ✗ | if (s->is_interlaced) | |
1828 | ✗ | return unsupported(avctx); | |
1829 | ✗ | decode_delta_e(s->video[0], buf, buf_end, avctx->width, s->is_interlaced, s->bpp, s->video_size); | |
1830 | ✗ | break; | |
1831 | ✗ | case 0x6c00: | |
1832 | case 0x6c01: | ||
1833 | ✗ | decode_delta_l(s->video[0], buf, buf_end, avctx->width, s->is_short, s->bpp, s->video_size); | |
1834 | ✗ | break; | |
1835 | ✗ | default: | |
1836 | ✗ | return unsupported(avctx); | |
1837 | } | ||
1838 | |||
1839 |
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2 | if (s->compression <= 0xff && (avctx->codec_tag == MKTAG('A', 'N', 'I', 'M'))) { |
1840 | ✗ | memcpy(s->video[1], s->video[0], s->video_size); | |
1841 | } | ||
1842 | |||
1843 |
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2 | if (s->compression > 0xff) { |
1844 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8 || avctx->pix_fmt == AV_PIX_FMT_GRAY8) { | |
1845 | ✗ | buf = s->video[0]; | |
1846 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1847 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1848 | ✗ | memset(row, 0, avctx->width); | |
1849 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1850 | ✗ | decodeplane8(row, buf, s->planesize, plane); | |
1851 | ✗ | buf += s->planesize; | |
1852 | } | ||
1853 | } | ||
1854 | ✗ | if (avctx->pix_fmt == AV_PIX_FMT_PAL8) | |
1855 | ✗ | memcpy(frame->data[1], s->pal, 256 * 4); | |
1856 | ✗ | } else if (s->ham) { | |
1857 | ✗ | int i, count = 1 << s->ham; | |
1858 | |||
1859 | ✗ | buf = s->video[0]; | |
1860 | ✗ | memset(s->ham_palbuf, 0, (1 << s->ham) * 2 * sizeof(uint32_t)); | |
1861 | ✗ | for (i = 0; i < count; i++) { | |
1862 | ✗ | s->ham_palbuf[i*2+1] = s->pal[i]; | |
1863 | } | ||
1864 | ✗ | for (i = 0; i < count; i++) { | |
1865 | ✗ | uint32_t tmp = i << (8 - s->ham); | |
1866 | ✗ | tmp |= tmp >> s->ham; | |
1867 | ✗ | s->ham_palbuf[(i+count)*2] = 0xFF00FFFF; | |
1868 | ✗ | s->ham_palbuf[(i+count*2)*2] = 0xFFFFFF00; | |
1869 | ✗ | s->ham_palbuf[(i+count*3)*2] = 0xFFFF00FF; | |
1870 | ✗ | s->ham_palbuf[(i+count)*2+1] = 0xFF000000 | tmp << 16; | |
1871 | ✗ | s->ham_palbuf[(i+count*2)*2+1] = 0xFF000000 | tmp; | |
1872 | ✗ | s->ham_palbuf[(i+count*3)*2+1] = 0xFF000000 | tmp << 8; | |
1873 | } | ||
1874 | ✗ | if (s->masking == MASK_HAS_MASK) { | |
1875 | ✗ | for (i = 0; i < 8 * (1 << s->ham); i++) | |
1876 | ✗ | s->ham_palbuf[(1 << s->bpp) + i] = s->ham_palbuf[i] | 0xFF000000; | |
1877 | } | ||
1878 | ✗ | for (y = 0; y < avctx->height; y++) { | |
1879 | ✗ | uint8_t *row = &frame->data[0][y * frame->linesize[0]]; | |
1880 | ✗ | memset(s->ham_buf, 0, s->planesize * 8); | |
1881 | ✗ | for (plane = 0; plane < s->bpp; plane++) { | |
1882 | ✗ | decodeplane8(s->ham_buf, buf, s->planesize, plane); | |
1883 | ✗ | buf += s->planesize; | |
1884 | } | ||
1885 | ✗ | decode_ham_plane32((uint32_t *)row, s->ham_buf, s->ham_palbuf, s->planesize); | |
1886 | } | ||
1887 | } else { | ||
1888 | ✗ | return unsupported(avctx); | |
1889 | } | ||
1890 | |||
1891 | ✗ | if (!s->is_brush) { | |
1892 | ✗ | FFSWAP(uint8_t *, s->video[0], s->video[1]); | |
1893 | } | ||
1894 | } | ||
1895 | |||
1896 |
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2 | if (avpkt->flags & AV_PKT_FLAG_KEY) { |
1897 | 2 | frame->key_frame = 1; | |
1898 | 2 | frame->pict_type = AV_PICTURE_TYPE_I; | |
1899 | } else { | ||
1900 | ✗ | frame->key_frame = 0; | |
1901 | ✗ | frame->pict_type = AV_PICTURE_TYPE_P; | |
1902 | } | ||
1903 | |||
1904 | 2 | *got_frame = 1; | |
1905 | |||
1906 | 2 | return buf_size; | |
1907 | } | ||
1908 | |||
1909 | const FFCodec ff_iff_ilbm_decoder = { | ||
1910 | .p.name = "iff", | ||
1911 | .p.long_name = NULL_IF_CONFIG_SMALL("IFF ACBM/ANIM/DEEP/ILBM/PBM/RGB8/RGBN"), | ||
1912 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
1913 | .p.id = AV_CODEC_ID_IFF_ILBM, | ||
1914 | .priv_data_size = sizeof(IffContext), | ||
1915 | .init = decode_init, | ||
1916 | .close = decode_end, | ||
1917 | FF_CODEC_DECODE_CB(decode_frame), | ||
1918 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
1919 | .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, | ||
1920 | }; | ||
1921 |