FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/huffyuvdec.c
Date: 2022-07-07 01:21:54
Exec Total Coverage
Lines: 388 749 51.8%
Branches: 320 587 54.5%

Line Branch Exec Source
1 /*
2 * huffyuv decoder
3 *
4 * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
7 * the algorithm used
8 *
9 * This file is part of FFmpeg.
10 *
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 *
25 * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA
26 */
27
28 /**
29 * @file
30 * huffyuv decoder
31 */
32
33 #define UNCHECKED_BITSTREAM_READER 1
34
35 #include "config_components.h"
36
37 #include "avcodec.h"
38 #include "codec_internal.h"
39 #include "get_bits.h"
40 #include "huffyuv.h"
41 #include "huffyuvdsp.h"
42 #include "lossless_videodsp.h"
43 #include "thread.h"
44 #include "libavutil/imgutils.h"
45 #include "libavutil/pixdesc.h"
46
47 #define classic_shift_luma_table_size 42
48 static const unsigned char classic_shift_luma[classic_shift_luma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = {
49 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10,
50 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8,
51 10, 21, 9, 23, 8, 8, 199, 70, 69, 68, 0,
52 0,0,0,0,0,0,0,0,
53 };
54
55 #define classic_shift_chroma_table_size 59
56 static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = {
57 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83,
58 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141,
59 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79,
60 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34, 0,
61 0,0,0,0,0,0,0,0,
62 };
63
64 static const unsigned char classic_add_luma[256] = {
65 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
66 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
67 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
68 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
69 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
70 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
71 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
72 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
73 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
74 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
75 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
76 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
77 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
78 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
79 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
80 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
81 };
82
83 static const unsigned char classic_add_chroma[256] = {
84 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
85 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
86 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
87 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63,
88 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
89 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
90 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111,
91 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1,
92 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134,
93 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96,
94 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
95 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
96 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26,
97 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
98 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
99 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
100 };
101
102 255 static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
103 {
104 int i, val, repeat;
105
106
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9582 for (i = 0; i < n;) {
107 9327 repeat = get_bits(gb, 3);
108 9327 val = get_bits(gb, 5);
109
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9327 if (repeat == 0)
110 5055 repeat = get_bits(gb, 8);
111
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9327 if (i + repeat > n || get_bits_left(gb) < 0) {
112 av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
113 return AVERROR_INVALIDDATA;
114 }
115
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572271 while (repeat--)
116 562944 dst[i++] = val;
117 }
118 255 return 0;
119 }
120
121 85 static int generate_joint_tables(HYuvContext *s)
122 {
123 int ret;
124 85 uint16_t *symbols = av_mallocz(5 << VLC_BITS);
125 uint16_t *bits;
126 uint8_t *len;
127
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85 if (!symbols)
128 return AVERROR(ENOMEM);
129 85 bits = symbols + (1 << VLC_BITS);
130 85 len = (uint8_t *)(bits + (1 << VLC_BITS));
131
132
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154 if (s->bitstream_bpp < 24 || s->version > 2) {
133 int p, i, y, u;
134
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345 for (p = 0; p < 4; p++) {
135
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276 int p0 = s->version > 2 ? p : 0;
136
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734484 for (i = y = 0; y < s->vlc_n; y++) {
137 734208 int len0 = s->len[p0][y];
138 734208 int limit = VLC_BITS - len0;
139
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734208 if (limit <= 0 || !len0)
140 718372 continue;
141
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15836 if ((sign_extend(y, 8) & (s->vlc_n-1)) != y)
142 continue;
143
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36030940 for (u = 0; u < s->vlc_n; u++) {
144 36015104 int len1 = s->len[p][u];
145
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36015104 if (len1 > limit || !len1)
146 35937833 continue;
147
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77271 if ((sign_extend(u, 8) & (s->vlc_n-1)) != u)
148 continue;
149
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77271 av_assert0(i < (1 << VLC_BITS));
150 77271 len[i] = len0 + len1;
151 77271 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
152 77271 symbols[i] = (y << 8) + (u & 0xFF);
153 77271 i++;
154 }
155 }
156 276 ff_free_vlc(&s->vlc[4 + p]);
157
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276 if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
158 bits, 2, 2, symbols, 2, 2, 0)) < 0)
159 goto out;
160 }
161 } else {
162 16 uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map;
163 int i, b, g, r, code;
164 16 int p0 = s->decorrelate;
165 16 int p1 = !s->decorrelate;
166 /* Restrict the range to +/-16 because that's pretty much guaranteed
167 * to cover all the combinations that fit in 11 bits total, and it
168 * does not matter if we miss a few rare codes. */
169
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528 for (i = 0, g = -16; g < 16; g++) {
170 512 int len0 = s->len[p0][g & 255];
171 512 int limit0 = VLC_BITS - len0;
172
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512 if (limit0 < 2 || !len0)
173 continue;
174
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16896 for (b = -16; b < 16; b++) {
175 16384 int len1 = s->len[p1][b & 255];
176 16384 int limit1 = limit0 - len1;
177
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16384 if (limit1 < 1 || !len1)
178 12656 continue;
179 3728 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
180
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123024 for (r = -16; r < 16; r++) {
181 119296 int len2 = s->len[2][r & 255];
182
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119296 if (len2 > limit1 || !len2)
183 108368 continue;
184
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10928 av_assert0(i < (1 << VLC_BITS));
185 10928 len[i] = len0 + len1 + len2;
186 10928 bits[i] = (code << len2) + s->bits[2][r & 255];
187
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10928 if (s->decorrelate) {
188 10928 map[i][G] = g;
189 10928 map[i][B] = g + b;
190 10928 map[i][R] = g + r;
191 } else {
192 map[i][B] = g;
193 map[i][G] = b;
194 map[i][R] = r;
195 }
196 10928 i++;
197 }
198 }
199 }
200 16 ff_free_vlc(&s->vlc[4]);
201
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16 if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1,
202 bits, 2, 2, 0)) < 0)
203 goto out;
204 }
205 85 ret = 0;
206 85 out:
207 85 av_freep(&symbols);
208 85 return ret;
209 }
210
211 85 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
212 {
213 GetBitContext gb;
214 int i, ret;
215 85 int count = 3;
216
217
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85 if ((ret = init_get_bits(&gb, src, length * 8)) < 0)
218 return ret;
219
220
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85 if (s->version > 2)
221 32 count = 1 + s->alpha + 2*s->chroma;
222
223
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340 for (i = 0; i < count; i++) {
224
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255 if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
225 return ret;
226
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255 if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
227 return ret;
228 255 ff_free_vlc(&s->vlc[i]);
229
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255 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
230 s->bits[i], 4, 4, 0)) < 0)
231 return ret;
232 }
233
234
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85 if ((ret = generate_joint_tables(s)) < 0)
235 return ret;
236
237 85 return (get_bits_count(&gb) + 7) / 8;
238 }
239
240 static int read_old_huffman_tables(HYuvContext *s)
241 {
242 GetBitContext gb;
243 int i, ret;
244
245 init_get_bits(&gb, classic_shift_luma,
246 classic_shift_luma_table_size * 8);
247 if ((ret = read_len_table(s->len[0], &gb, 256)) < 0)
248 return ret;
249
250 init_get_bits(&gb, classic_shift_chroma,
251 classic_shift_chroma_table_size * 8);
252 if ((ret = read_len_table(s->len[1], &gb, 256)) < 0)
253 return ret;
254
255 for (i = 0; i < 256; i++)
256 s->bits[0][i] = classic_add_luma[i];
257 for (i = 0; i < 256; i++)
258 s->bits[1][i] = classic_add_chroma[i];
259
260 if (s->bitstream_bpp >= 24) {
261 memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
262 memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
263 }
264 memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
265 memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));
266
267 for (i = 0; i < 4; i++) {
268 ff_free_vlc(&s->vlc[i]);
269 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
270 s->bits[i], 4, 4, 0)) < 0)
271 return ret;
272 }
273
274 if ((ret = generate_joint_tables(s)) < 0)
275 return ret;
276
277 return 0;
278 }
279
280 85 static av_cold int decode_end(AVCodecContext *avctx)
281 {
282 85 HYuvContext *s = avctx->priv_data;
283 int i;
284
285 85 ff_huffyuv_common_end(s);
286 85 av_freep(&s->bitstream_buffer);
287
288
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765 for (i = 0; i < 8; i++)
289 680 ff_free_vlc(&s->vlc[i]);
290
291 85 return 0;
292 }
293
294 85 static av_cold int decode_init(AVCodecContext *avctx)
295 {
296 85 HYuvContext *s = avctx->priv_data;
297 int ret;
298
299 85 ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
300
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85 if (ret < 0)
301 return ret;
302
303 85 ff_huffyuvdsp_init(&s->hdsp, avctx->pix_fmt);
304 85 ff_llviddsp_init(&s->llviddsp);
305 85 memset(s->vlc, 0, 4 * sizeof(VLC));
306
307 85 s->interlaced = avctx->height > 288;
308 85 s->bgr32 = 1;
309
310
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85 if (avctx->extradata_size) {
311
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85 if ((avctx->bits_per_coded_sample & 7) &&
312
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28 avctx->bits_per_coded_sample != 12)
313 s->version = 1; // do such files exist at all?
314
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85 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
315 53 s->version = 2;
316 else
317 32 s->version = 3;
318 } else
319 s->version = 0;
320
321 85 s->bps = 8;
322 85 s->n = 1<<s->bps;
323 85 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
324 85 s->chroma = 1;
325
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85 if (s->version >= 2) {
326 int method, interlace;
327
328
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85 if (avctx->extradata_size < 4)
329 return AVERROR_INVALIDDATA;
330
331 85 method = avctx->extradata[0];
332 85 s->decorrelate = method & 64 ? 1 : 0;
333 85 s->predictor = method & 63;
334
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85 if (s->version == 2) {
335 53 s->bitstream_bpp = avctx->extradata[1];
336
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53 if (s->bitstream_bpp == 0)
337 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
338 } else {
339 32 s->bps = (avctx->extradata[1] >> 4) + 1;
340 32 s->n = 1<<s->bps;
341 32 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
342 32 s->chroma_h_shift = avctx->extradata[1] & 3;
343 32 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
344 32 s->yuv = !!(avctx->extradata[2] & 1);
345 32 s->chroma= !!(avctx->extradata[2] & 3);
346 32 s->alpha = !!(avctx->extradata[2] & 4);
347 }
348 85 interlace = (avctx->extradata[2] & 0x30) >> 4;
349
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85 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
350 85 s->context = avctx->extradata[2] & 0x40 ? 1 : 0;
351
352
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85 if ((ret = read_huffman_tables(s, avctx->extradata + 4,
353 85 avctx->extradata_size - 4)) < 0)
354 return ret;
355 } else {
356 switch (avctx->bits_per_coded_sample & 7) {
357 case 1:
358 s->predictor = LEFT;
359 s->decorrelate = 0;
360 break;
361 case 2:
362 s->predictor = LEFT;
363 s->decorrelate = 1;
364 break;
365 case 3:
366 s->predictor = PLANE;
367 s->decorrelate = avctx->bits_per_coded_sample >= 24;
368 break;
369 case 4:
370 s->predictor = MEDIAN;
371 s->decorrelate = 0;
372 break;
373 default:
374 s->predictor = LEFT; // OLD
375 s->decorrelate = 0;
376 break;
377 }
378 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
379 s->context = 0;
380
381 if ((ret = read_old_huffman_tables(s)) < 0)
382 return ret;
383 }
384
385
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85 if (s->version <= 2) {
386
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53 switch (s->bitstream_bpp) {
387 28 case 12:
388 28 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
389 28 s->yuv = 1;
390 28 break;
391 9 case 16:
392
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9 if (s->yuy2)
393 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
394 else
395 9 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
396 9 s->yuv = 1;
397 9 break;
398 8 case 24:
399
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8 if (s->bgr32)
400 8 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
401 else
402 avctx->pix_fmt = AV_PIX_FMT_BGR24;
403 8 break;
404 8 case 32:
405
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8 av_assert0(s->bgr32);
406 8 avctx->pix_fmt = AV_PIX_FMT_RGB32;
407 8 s->alpha = 1;
408 8 break;
409 default:
410 return AVERROR_INVALIDDATA;
411 }
412 53 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
413 &s->chroma_h_shift,
414 &s->chroma_v_shift);
415 } else {
416
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32 switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) {
417 case 0x070:
418 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
419 break;
420 case 0x0F0:
421 avctx->pix_fmt = AV_PIX_FMT_GRAY16;
422 break;
423 case 0x470:
424 avctx->pix_fmt = AV_PIX_FMT_GBRP;
425 break;
426 case 0x480:
427 avctx->pix_fmt = AV_PIX_FMT_GBRP9;
428 break;
429 case 0x490:
430 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
431 break;
432 case 0x4B0:
433 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
434 break;
435 case 0x4D0:
436 avctx->pix_fmt = AV_PIX_FMT_GBRP14;
437 break;
438 case 0x4F0:
439 avctx->pix_fmt = AV_PIX_FMT_GBRP16;
440 break;
441 case 0x570:
442 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
443 break;
444 8 case 0x670:
445 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
446 8 break;
447 case 0x680:
448 avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
449 break;
450 case 0x690:
451 avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
452 break;
453 case 0x6B0:
454 avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
455 break;
456 case 0x6D0:
457 avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
458 break;
459 8 case 0x6F0:
460 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
461 8 break;
462 case 0x671:
463 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
464 break;
465 case 0x681:
466 avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
467 break;
468 8 case 0x691:
469 8 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
470 8 break;
471 case 0x6B1:
472 avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
473 break;
474 case 0x6D1:
475 avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
476 break;
477 case 0x6F1:
478 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
479 break;
480 case 0x672:
481 avctx->pix_fmt = AV_PIX_FMT_YUV411P;
482 break;
483 case 0x674:
484 avctx->pix_fmt = AV_PIX_FMT_YUV440P;
485 break;
486 case 0x675:
487 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
488 break;
489 case 0x685:
490 avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
491 break;
492 case 0x695:
493 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
494 break;
495 8 case 0x6B5:
496 8 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
497 8 break;
498 case 0x6D5:
499 avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
500 break;
501 case 0x6F5:
502 avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
503 break;
504 case 0x67A:
505 avctx->pix_fmt = AV_PIX_FMT_YUV410P;
506 break;
507 case 0x770:
508 avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
509 break;
510 case 0x780:
511 avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
512 break;
513 case 0x790:
514 avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
515 break;
516 case 0x7F0:
517 avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
518 break;
519 case 0x771:
520 avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
521 break;
522 case 0x781:
523 avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
524 break;
525 case 0x791:
526 avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
527 break;
528 case 0x7F1:
529 avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
530 break;
531 case 0x775:
532 avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
533 break;
534 case 0x785:
535 avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
536 break;
537 case 0x795:
538 avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
539 break;
540 case 0x7F5:
541 avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
542 break;
543 default:
544 return AVERROR_INVALIDDATA;
545 }
546 }
547
548 85 ff_huffyuv_common_init(avctx);
549
550
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85 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
551 av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
552 return AVERROR_INVALIDDATA;
553 }
554
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85 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P &&
555 avctx->width % 4) {
556 av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 "
557 "for this combination of colorspace and predictor type.\n");
558 return AVERROR_INVALIDDATA;
559 }
560
561
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85 if ((ret = ff_huffyuv_alloc_temp(s)) < 0)
562 return ret;
563
564 85 return 0;
565 }
566
567 /** Subset of GET_VLC for use in hand-roller VLC code */
568 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
569 code = table[index].sym; \
570 n = table[index].len; \
571 if (max_depth > 1 && n < 0) { \
572 LAST_SKIP_BITS(name, gb, bits); \
573 UPDATE_CACHE(name, gb); \
574 \
575 nb_bits = -n; \
576 index = SHOW_UBITS(name, gb, nb_bits) + code; \
577 code = table[index].sym; \
578 n = table[index].len; \
579 if (max_depth > 2 && n < 0) { \
580 LAST_SKIP_BITS(name, gb, nb_bits); \
581 UPDATE_CACHE(name, gb); \
582 \
583 nb_bits = -n; \
584 index = SHOW_UBITS(name, gb, nb_bits) + code; \
585 code = table[index].sym; \
586 n = table[index].len; \
587 } \
588 } \
589 dst = code; \
590 LAST_SKIP_BITS(name, gb, n)
591
592
593 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
594 bits, max_depth, OP) \
595 do { \
596 unsigned int index = SHOW_UBITS(name, gb, bits); \
597 int code, n = dtable[index].len; \
598 \
599 if (n<=0) { \
600 int nb_bits; \
601 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
602 \
603 UPDATE_CACHE(re, gb); \
604 index = SHOW_UBITS(name, gb, bits); \
605 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
606 } else { \
607 code = dtable[index].sym; \
608 OP(dst0, dst1, code); \
609 LAST_SKIP_BITS(name, gb, n); \
610 } \
611 } while (0)
612
613 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
614
615 #define READ_2PIX(dst0, dst1, plane1) \
616 UPDATE_CACHE(re, &s->gb); \
617 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
618 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
619
620 70390 static void decode_422_bitstream(HYuvContext *s, int count)
621 {
622 int i, icount;
623 70390 OPEN_READER(re, &s->gb);
624 70390 count /= 2;
625
626 70390 icount = get_bits_left(&s->gb) / (32 * 4);
627
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70390 if (count >= icount) {
628
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147559 for (i = 0; i < icount; i++) {
629
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145894 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
630
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145894 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
631 }
632
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121205 for (; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
633
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119540 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
634
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119540 if (BITS_LEFT(re, &s->gb) <= 0) break;
635
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119540 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
636 }
637
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1665 for (; i < count; i++)
638 s->temp[0][2 * i ] = s->temp[1][i] =
639 s->temp[0][2 * i + 1] = s->temp[2][i] = 0;
640 } else {
641
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12345431 for (i = 0; i < count; i++) {
642
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12276706 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
643
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12276706 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
644 }
645 }
646 70390 CLOSE_READER(re, &s->gb);
647 70390 }
648
649 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
650 UPDATE_CACHE(re, &s->gb); \
651 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
652 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
653
654 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
655
656 /* TODO instead of restarting the read when the code isn't in the first level
657 * of the joint table, jump into the 2nd level of the individual table. */
658 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
659 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
660 dst0 += get_bits(&s->gb, 2);\
661 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
662 dst1 += get_bits(&s->gb, 2);\
663 }
664 493900 static void decode_plane_bitstream(HYuvContext *s, int width, int plane)
665 {
666 493900 int i, count = width/2;
667
668
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493900 if (s->bps <= 8) {
669 134700 OPEN_READER(re, &s->gb);
670
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134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
671
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213540 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
672
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212153 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
673 }
674 } else {
675
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22817460 for(i=0; i<count; i++){
676
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22684147 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
677 }
678 }
679
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134700 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
680 unsigned int index;
681 int nb_bits, code, n;
682 UPDATE_CACHE(re, &s->gb);
683 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
684 VLC_INTERN(s->temp[0][width-1], s->vlc[plane].table,
685 &s->gb, re, VLC_BITS, 3);
686 }
687 134700 CLOSE_READER(re, &s->gb);
688
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359200 } else if (s->bps <= 14) {
689 224500 OPEN_READER(re, &s->gb);
690
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224500 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
691
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83177 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
692
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82104 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
693 }
694 } else {
695
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26851123 for(i=0; i<count; i++){
696
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26627696 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
697 }
698 }
699
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224500 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
700 unsigned int index;
701 int nb_bits, code, n;
702 5100 UPDATE_CACHE(re, &s->gb);
703 5100 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
704
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5100 VLC_INTERN(s->temp16[0][width-1], s->vlc[plane].table,
705 &s->gb, re, VLC_BITS, 3);
706 }
707 224500 CLOSE_READER(re, &s->gb);
708 } else {
709
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134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
710
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57258 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
711 56886 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
712 }
713 } else {
714
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22973742 for(i=0; i<count; i++){
715 22839414 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
716 }
717 }
718
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134700 if( width&1 && get_bits_left(&s->gb)>0 ) {
719 int dst = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;
720 s->temp16[0][width-1] = dst + get_bits(&s->gb, 2);
721 }
722 }
723 493900 }
724
725 25490 static void decode_gray_bitstream(HYuvContext *s, int count)
726 {
727 int i;
728 25490 OPEN_READER(re, &s->gb);
729 25490 count /= 2;
730
731
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25490 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
732
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75357 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
733
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74930 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
734 }
735 } else {
736
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4860583 for (i = 0; i < count; i++) {
737
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4835520 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
738 }
739 }
740 25490 CLOSE_READER(re, &s->gb);
741 25490 }
742
743 89800 static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
744 int decorrelate, int alpha)
745 {
746 int i;
747 89800 OPEN_READER(re, &s->gb);
748
749
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30617800 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
750 unsigned int index;
751 int code, n, nb_bits;
752
753 30528000 UPDATE_CACHE(re, &s->gb);
754 30528000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
755 30528000 n = s->vlc[4].table[index].len;
756
757
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30528000 if (n>0) {
758 13538088 code = s->vlc[4].table[index].sym;
759 13538088 *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code];
760 13538088 LAST_SKIP_BITS(re, &s->gb, n);
761 } else {
762
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16989912 if (decorrelate) {
763
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16989912 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
764 &s->gb, re, VLC_BITS, 3);
765
766 16989912 UPDATE_CACHE(re, &s->gb);
767 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
768
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16989912 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
769 16989912 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
770
771 16989912 UPDATE_CACHE(re, &s->gb);
772 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
773
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16989912 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
774 16989912 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
775 } else {
776 VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
777 &s->gb, re, VLC_BITS, 3);
778
779 UPDATE_CACHE(re, &s->gb);
780 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
781 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
782 &s->gb, re, VLC_BITS, 3);
783
784 UPDATE_CACHE(re, &s->gb);
785 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
786 VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
787 &s->gb, re, VLC_BITS, 3);
788 }
789 }
790
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30528000 if (alpha) {
791 15264000 UPDATE_CACHE(re, &s->gb);
792 15264000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
793
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15264000 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
794 &s->gb, re, VLC_BITS, 3);
795 } else
796 15264000 s->temp[0][4 * i + A] = 0;
797 }
798 89800 CLOSE_READER(re, &s->gb);
799 89800 }
800
801 89800 static void decode_bgr_bitstream(HYuvContext *s, int count)
802 {
803
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89800 if (s->decorrelate) {
804
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89800 if (s->bitstream_bpp == 24)
805 44900 decode_bgr_1(s, count, 1, 0);
806 else
807 44900 decode_bgr_1(s, count, 1, 1);
808 } else {
809 if (s->bitstream_bpp == 24)
810 decode_bgr_1(s, count, 0, 0);
811 else
812 decode_bgr_1(s, count, 0, 1);
813 }
814 89800 }
815
816 71590 static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
817 {
818 int h, cy, i;
819 int offset[AV_NUM_DATA_POINTERS];
820
821
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71590 if (!s->avctx->draw_horiz_band)
822 71590 return;
823
824 h = y - s->last_slice_end;
825 y -= h;
826
827 if (s->bitstream_bpp == 12)
828 cy = y >> 1;
829 else
830 cy = y;
831
832 offset[0] = frame->linesize[0] * y;
833 offset[1] = frame->linesize[1] * cy;
834 offset[2] = frame->linesize[2] * cy;
835 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
836 offset[i] = 0;
837 emms_c();
838
839 s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
840
841 s->last_slice_end = y + h;
842 }
843
844 493900 static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
845 {
846
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493900 if (s->bps <= 8) {
847 134700 return s->llviddsp.add_left_pred(dst, src, w, acc);
848 } else {
849 359200 return s->llviddsp.add_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
850 }
851 }
852
853 134100 static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
854 {
855
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134100 if (s->bps <= 8) {
856 s->llviddsp.add_bytes(dst, src, w);
857 } else {
858 134100 s->hdsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
859 }
860 134100 }
861
862 static void add_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, const uint8_t *diff, int w, int *left, int *left_top)
863 {
864 if (s->bps <= 8) {
865 s->llviddsp.add_median_pred(dst, src, diff, w, left, left_top);
866 } else {
867 s->hdsp.add_hfyu_median_pred_int16((uint16_t *)dst, (const uint16_t *)src, (const uint16_t *)diff, s->n-1, w, left, left_top);
868 }
869 }
870
871 1610 static int decode_slice(AVCodecContext *avctx, AVFrame *p, int height,
872 int buf_size, int y_offset, int table_size)
873 {
874 1610 HYuvContext *s = avctx->priv_data;
875 int fake_ystride, fake_ustride, fake_vstride;
876 1610 const int width = s->width;
877 1610 const int width2 = s->width >> 1;
878 int ret;
879
880
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1610 if ((ret = init_get_bits8(&s->gb, s->bitstream_buffer + table_size, buf_size - table_size)) < 0)
881 return ret;
882
883
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1610 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
884
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1610 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
885
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1610 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
886
887
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1610 if (s->version > 2) {
888 int plane;
889
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3200 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
890 int left, lefttop, y;
891 2400 int w = width;
892 2400 int h = height;
893 2400 int fake_stride = fake_ystride;
894
895
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2400 if (s->chroma && (plane == 1 || plane == 2)) {
896 1600 w >>= s->chroma_h_shift;
897 1600 h >>= s->chroma_v_shift;
898
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1600 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
899 }
900
901
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2400 switch (s->predictor) {
902 2400 case LEFT:
903 case PLANE:
904 2400 decode_plane_bitstream(s, w, plane);
905 2400 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
906
907
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493900 for (y = 1; y < h; y++) {
908 491500 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
909
910 491500 decode_plane_bitstream(s, w, plane);
911 491500 left = left_prediction(s, dst, s->temp[0], w, left);
912
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491500 if (s->predictor == PLANE) {
913
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134100 if (y > s->interlaced) {
914 134100 add_bytes(s, dst, dst - fake_stride, w);
915 }
916 }
917 }
918
919 2400 break;
920 case MEDIAN:
921 decode_plane_bitstream(s, w, plane);
922 left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
923
924 y = 1;
925 if (y >= h)
926 break;
927
928 /* second line is left predicted for interlaced case */
929 if (s->interlaced) {
930 decode_plane_bitstream(s, w, plane);
931 left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
932 y++;
933 if (y >= h)
934 break;
935 }
936
937 lefttop = p->data[plane][0];
938 decode_plane_bitstream(s, w, plane);
939 add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
940 y++;
941
942 for (; y<h; y++) {
943 uint8_t *dst;
944
945 decode_plane_bitstream(s, w, plane);
946
947 dst = p->data[plane] + p->linesize[plane] * y;
948
949 add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
950 }
951
952 break;
953 }
954 }
955 800 draw_slice(s, p, height);
956
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810 } else if (s->bitstream_bpp < 24) {
957 int y, cy;
958 int lefty, leftu, leftv;
959 int lefttopy, lefttopu, lefttopv;
960
961
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410 if (s->yuy2) {
962 p->data[0][3] = get_bits(&s->gb, 8);
963 p->data[0][2] = get_bits(&s->gb, 8);
964 p->data[0][1] = get_bits(&s->gb, 8);
965 p->data[0][0] = get_bits(&s->gb, 8);
966
967 av_log(avctx, AV_LOG_ERROR,
968 "YUY2 output is not implemented yet\n");
969 return AVERROR_PATCHWELCOME;
970 } else {
971 410 leftv =
972 410 p->data[2][0 + y_offset * p->linesize[2]] = get_bits(&s->gb, 8);
973 410 lefty =
974 410 p->data[0][1 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
975 410 leftu =
976 410 p->data[1][0 + y_offset * p->linesize[1]] = get_bits(&s->gb, 8);
977 410 p->data[0][0 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
978
979
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410 switch (s->predictor) {
980 410 case LEFT:
981 case PLANE:
982 410 decode_422_bitstream(s, width - 2);
983 820 lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0] * y_offset + 2, s->temp[0],
984 410 width - 2, lefty);
985
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410 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
986 410 leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[1] * y_offset + 1, s->temp[1], width2 - 1, leftu);
987 410 leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[2] * y_offset + 1, s->temp[2], width2 - 1, leftv);
988 }
989
990
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70390 for (cy = y = 1; y < height; y++, cy++) {
991 uint8_t *ydst, *udst, *vdst;
992
993
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70190 if (s->bitstream_bpp == 12) {
994 25490 decode_gray_bitstream(s, width);
995
996 25490 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
997
998 25490 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
999 width, lefty);
1000
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25490 if (s->predictor == PLANE) {
1001 if (y > s->interlaced)
1002 s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1003 }
1004 25490 y++;
1005
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25490 if (y >= height)
1006 210 break;
1007 }
1008
1009 69980 draw_slice(s, p, y);
1010
1011 69980 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
1012 69980 udst = p->data[1] + p->linesize[1] * (cy + y_offset);
1013 69980 vdst = p->data[2] + p->linesize[2] * (cy + y_offset);
1014
1015 69980 decode_422_bitstream(s, width);
1016 69980 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
1017 width, lefty);
1018
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69980 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1019 69980 leftu = s->llviddsp.add_left_pred(udst, s->temp[1], width2, leftu);
1020 69980 leftv = s->llviddsp.add_left_pred(vdst, s->temp[2], width2, leftv);
1021 }
1022
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69980 if (s->predictor == PLANE) {
1023 if (cy > s->interlaced) {
1024 s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1025 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1026 s->llviddsp.add_bytes(udst, udst - fake_ustride, width2);
1027 s->llviddsp.add_bytes(vdst, vdst - fake_vstride, width2);
1028 }
1029 }
1030 }
1031 }
1032 410 draw_slice(s, p, height);
1033
1034 410 break;
1035 case MEDIAN:
1036 /* first line except first 2 pixels is left predicted */
1037 decode_422_bitstream(s, width - 2);
1038 lefty = s->llviddsp.add_left_pred(p->data[0] + 2, s->temp[0],
1039 width - 2, lefty);
1040 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1041 leftu = s->llviddsp.add_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1042 leftv = s->llviddsp.add_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1043 }
1044
1045 cy = y = 1;
1046 if (y >= height)
1047 break;
1048
1049 /* second line is left predicted for interlaced case */
1050 if (s->interlaced) {
1051 decode_422_bitstream(s, width);
1052 lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0],
1053 s->temp[0], width, lefty);
1054 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1055 leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1056 leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1057 }
1058 y++;
1059 cy++;
1060 if (y >= height)
1061 break;
1062 }
1063
1064 /* next 4 pixels are left predicted too */
1065 decode_422_bitstream(s, 4);
1066 lefty = s->llviddsp.add_left_pred(p->data[0] + fake_ystride,
1067 s->temp[0], 4, lefty);
1068 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1069 leftu = s->llviddsp.add_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1070 leftv = s->llviddsp.add_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1071 }
1072
1073 /* next line except the first 4 pixels is median predicted */
1074 lefttopy = p->data[0][3];
1075 decode_422_bitstream(s, width - 4);
1076 s->llviddsp.add_median_pred(p->data[0] + fake_ystride + 4,
1077 p->data[0] + 4, s->temp[0],
1078 width - 4, &lefty, &lefttopy);
1079 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1080 lefttopu = p->data[1][1];
1081 lefttopv = p->data[2][1];
1082 s->llviddsp.add_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1083 s->llviddsp.add_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1084 }
1085 y++;
1086 cy++;
1087
1088 for (; y < height; y++, cy++) {
1089 uint8_t *ydst, *udst, *vdst;
1090
1091 if (s->bitstream_bpp == 12) {
1092 while (2 * cy > y) {
1093 decode_gray_bitstream(s, width);
1094 ydst = p->data[0] + p->linesize[0] * y;
1095 s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1096 s->temp[0], width,
1097 &lefty, &lefttopy);
1098 y++;
1099 }
1100 if (y >= height)
1101 break;
1102 }
1103 draw_slice(s, p, y);
1104
1105 decode_422_bitstream(s, width);
1106
1107 ydst = p->data[0] + p->linesize[0] * y;
1108 udst = p->data[1] + p->linesize[1] * cy;
1109 vdst = p->data[2] + p->linesize[2] * cy;
1110
1111 s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1112 s->temp[0], width,
1113 &lefty, &lefttopy);
1114 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1115 s->llviddsp.add_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1116 s->llviddsp.add_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1117 }
1118 }
1119
1120 draw_slice(s, p, height);
1121 break;
1122 }
1123 }
1124 } else {
1125 int y;
1126 uint8_t left[4];
1127 400 const int last_line = (y_offset + height - 1) * p->linesize[0];
1128
1129
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400 if (s->bitstream_bpp == 32) {
1130 200 left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8);
1131 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1132 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1133 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1134 } else {
1135 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1136 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1137 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1138 200 left[A] = p->data[0][last_line + A] = 255;
1139 200 skip_bits(&s->gb, 8);
1140 }
1141
1142
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400 if (s->bgr32) {
1143
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400 switch (s->predictor) {
1144 400 case LEFT:
1145 case PLANE:
1146 400 decode_bgr_bitstream(s, width - 1);
1147 400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4,
1148 400 s->temp[0], width - 1, left);
1149
1150
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89800 for (y = height - 2; y >= 0; y--) { // Yes it is stored upside down.
1151 89400 decode_bgr_bitstream(s, width);
1152
1153 89400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * (y + y_offset),
1154 89400 s->temp[0], width, left);
1155
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89400 if (s->predictor == PLANE) {
1156 if (s->bitstream_bpp != 32)
1157 left[A] = 0;
1158 if (y < height - 1 - s->interlaced) {
1159 s->llviddsp.add_bytes(p->data[0] + p->linesize[0] * (y + y_offset),
1160 p->data[0] + p->linesize[0] * (y + y_offset) +
1161 fake_ystride, 4 * width);
1162 }
1163 }
1164 }
1165 // just 1 large slice as this is not possible in reverse order
1166 400 draw_slice(s, p, height);
1167 400 break;
1168 default:
1169 av_log(avctx, AV_LOG_ERROR,
1170 "prediction type not supported!\n");
1171 }
1172 } else {
1173 av_log(avctx, AV_LOG_ERROR,
1174 "BGR24 output is not implemented yet\n");
1175 return AVERROR_PATCHWELCOME;
1176 }
1177 }
1178
1179 1610 return 0;
1180 }
1181
1182 1610 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
1183 int *got_frame, AVPacket *avpkt)
1184 {
1185 1610 const uint8_t *buf = avpkt->data;
1186 1610 int buf_size = avpkt->size;
1187 1610 HYuvContext *s = avctx->priv_data;
1188 1610 const int width = s->width;
1189 1610 const int height = s->height;
1190 1610 int slice, table_size = 0, ret, nb_slices;
1191 unsigned slices_info_offset;
1192 int slice_height;
1193
1194
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1610 if (buf_size < (width * height + 7)/8)
1195 return AVERROR_INVALIDDATA;
1196
1197 1610 av_fast_padded_malloc(&s->bitstream_buffer,
1198 &s->bitstream_buffer_size,
1199 buf_size);
1200
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1610 if (!s->bitstream_buffer)
1201 return AVERROR(ENOMEM);
1202
1203 1610 s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer,
1204 (const uint32_t *) buf, buf_size / 4);
1205
1206
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1610 if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
1207 return ret;
1208
1209
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1610 if (s->context) {
1210 table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
1211 if (table_size < 0)
1212 return table_size;
1213 }
1214
1215
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1610 if ((unsigned) (buf_size - table_size) >= INT_MAX / 8)
1216 return AVERROR_INVALIDDATA;
1217
1218 1610 s->last_slice_end = 0;
1219
1220
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1610 if (avctx->codec_id == AV_CODEC_ID_HYMT &&
1221 (buf_size > 32 && AV_RL32(avpkt->data + buf_size - 16) == 0)) {
1222 slices_info_offset = AV_RL32(avpkt->data + buf_size - 4);
1223 slice_height = AV_RL32(avpkt->data + buf_size - 8);
1224 nb_slices = AV_RL32(avpkt->data + buf_size - 12);
1225 if (nb_slices * 8LL + slices_info_offset > buf_size - 16 ||
1226 s->chroma_v_shift ||
1227 slice_height <= 0 || nb_slices * (uint64_t)slice_height > height)
1228 return AVERROR_INVALIDDATA;
1229 } else {
1230 1610 slice_height = height;
1231 1610 nb_slices = 1;
1232 }
1233
1234
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3220 for (slice = 0; slice < nb_slices; slice++) {
1235 int y_offset, slice_offset, slice_size;
1236
1237
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1610 if (nb_slices > 1) {
1238 slice_offset = AV_RL32(avpkt->data + slices_info_offset + slice * 8);
1239 slice_size = AV_RL32(avpkt->data + slices_info_offset + slice * 8 + 4);
1240
1241 if (slice_offset < 0 || slice_size <= 0 || (slice_offset&3) ||
1242 slice_offset + (int64_t)slice_size > buf_size)
1243 return AVERROR_INVALIDDATA;
1244
1245 y_offset = height - (slice + 1) * slice_height;
1246 s->bdsp.bswap_buf((uint32_t *)s->bitstream_buffer,
1247 (const uint32_t *)(buf + slice_offset), slice_size / 4);
1248 } else {
1249 1610 y_offset = 0;
1250 1610 slice_offset = 0;
1251 1610 slice_size = buf_size;
1252 }
1253
1254 1610 ret = decode_slice(avctx, p, slice_height, slice_size, y_offset, table_size);
1255 1610 emms_c();
1256
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1610 if (ret < 0)
1257 return ret;
1258 }
1259
1260 1610 *got_frame = 1;
1261
1262 1610 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1263 }
1264
1265 const FFCodec ff_huffyuv_decoder = {
1266 .p.name = "huffyuv",
1267 .p.long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1268 .p.type = AVMEDIA_TYPE_VIDEO,
1269 .p.id = AV_CODEC_ID_HUFFYUV,
1270 .priv_data_size = sizeof(HYuvContext),
1271 .init = decode_init,
1272 .close = decode_end,
1273 FF_CODEC_DECODE_CB(decode_frame),
1274 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1275 AV_CODEC_CAP_FRAME_THREADS,
1276 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1277 };
1278
1279 #if CONFIG_FFVHUFF_DECODER
1280 const FFCodec ff_ffvhuff_decoder = {
1281 .p.name = "ffvhuff",
1282 .p.long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1283 .p.type = AVMEDIA_TYPE_VIDEO,
1284 .p.id = AV_CODEC_ID_FFVHUFF,
1285 .priv_data_size = sizeof(HYuvContext),
1286 .init = decode_init,
1287 .close = decode_end,
1288 FF_CODEC_DECODE_CB(decode_frame),
1289 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1290 AV_CODEC_CAP_FRAME_THREADS,
1291 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1292 };
1293 #endif /* CONFIG_FFVHUFF_DECODER */
1294
1295 #if CONFIG_HYMT_DECODER
1296 const FFCodec ff_hymt_decoder = {
1297 .p.name = "hymt",
1298 .p.long_name = NULL_IF_CONFIG_SMALL("HuffYUV MT"),
1299 .p.type = AVMEDIA_TYPE_VIDEO,
1300 .p.id = AV_CODEC_ID_HYMT,
1301 .priv_data_size = sizeof(HYuvContext),
1302 .init = decode_init,
1303 .close = decode_end,
1304 FF_CODEC_DECODE_CB(decode_frame),
1305 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1306 AV_CODEC_CAP_FRAME_THREADS,
1307 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
1308 };
1309 #endif /* CONFIG_HYMT_DECODER */
1310