FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/huffyuvdec.c
Date: 2026-08-11 17:55:23
Exec Total Coverage
Lines: 456 757 60.2%
Functions: 16 17 94.1%
Branches: 343 589 58.2%
Line Branch Exec Source
1 /*
2 * huffyuv decoder
3 *
4 * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * see https://multimedia.cx/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 "bswapdsp.h"
39 #include "bytestream.h"
40 #include "codec_internal.h"
41 #include "get_bits.h"
42 #include "huffyuv.h"
43 #include "huffyuvdsp.h"
44 #include "lossless_videodsp.h"
45 #include "thread.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/mem.h"
48 #include "libavutil/pixdesc.h"
49
50 #define VLC_BITS 12
51
52 typedef struct HYuvDecContext {
53 GetBitContext gb;
54 Predictor predictor;
55 int interlaced;
56 int decorrelate;
57 int bitstream_bpp;
58 int version;
59 int yuy2; //use yuy2 instead of 422P
60 int bgr32; //use bgr32 instead of bgr24
61 int bps;
62 int n; // 1<<bps
63 int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
64 int alpha;
65 int chroma;
66 int yuv;
67 int chroma_h_shift;
68 int chroma_v_shift;
69 int flags;
70 int context;
71 int last_slice_end;
72
73 union {
74 uint8_t *temp[3];
75 uint16_t *temp16[3];
76 };
77 uint8_t len[4][MAX_VLC_N];
78 uint32_t bits[4][MAX_VLC_N];
79 uint32_t pix_bgr_map[1<<VLC_BITS];
80 VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
81 uint8_t *bitstream_buffer;
82 unsigned int bitstream_buffer_size;
83 BswapDSPContext bdsp;
84 HuffYUVDSPContext hdsp;
85 LLVidDSPContext llviddsp;
86 } HYuvDecContext;
87
88
89 static const uint8_t classic_shift_luma[] = {
90 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10,
91 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8,
92 10, 21, 9, 23, 8, 8, 199, 70, 69, 68,
93 };
94
95 static const uint8_t classic_shift_chroma[] = {
96 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83,
97 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141,
98 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79,
99 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34,
100 };
101
102 static const unsigned char classic_add_luma[256] = {
103 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
104 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
105 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
106 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
107 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
108 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
109 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
110 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
111 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
112 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
113 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
114 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
115 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
116 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
117 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
118 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
119 };
120
121 static const unsigned char classic_add_chroma[256] = {
122 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
123 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
124 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
125 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63,
126 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
127 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
128 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111,
129 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1,
130 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134,
131 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96,
132 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
133 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
134 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26,
135 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
136 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
137 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
138 };
139
140 255 static int read_len_table(uint8_t *dst, GetByteContext *gb, int n)
141 {
142 int i, val, repeat;
143
144
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 9582 for (i = 0; i < n;) {
145
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 9327 if (bytestream2_get_bytes_left(gb) <= 0)
146 ✗ goto error;
147 9327 repeat = bytestream2_peek_byteu(gb) >> 5;
148 9327 val = bytestream2_get_byteu(gb) & 0x1F;
149
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 9327 if (repeat == 0) {
150
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 5055 if (bytestream2_get_bytes_left(gb) <= 0)
151 ✗ goto error;
152 5055 repeat = bytestream2_get_byteu(gb);
153 }
154
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 9327 if (i + repeat > n)
155 ✗ goto error;
156
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 572271 while (repeat--)
157 562944 dst[i++] = val;
158 }
159 255 return 0;
160
161 ✗ error:
162 ✗ av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
163 ✗ return AVERROR_INVALIDDATA;
164 }
165
166 85 static int generate_joint_tables(HYuvDecContext *s)
167 {
168 int ret;
169 85 uint16_t *symbols = av_mallocz(5 << VLC_BITS);
170 uint16_t *bits;
171 uint8_t *len;
172
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 85 if (!symbols)
173 ✗ return AVERROR(ENOMEM);
174 85 bits = symbols + (1 << VLC_BITS);
175 85 len = (uint8_t *)(bits + (1 << VLC_BITS));
176
177
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 154 if (s->bitstream_bpp < 24 || s->version > 2) {
178 69 int count = 1 + s->alpha + 2 * s->chroma;
179 int p, i, y, u;
180
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 276 for (p = 0; p < count; p++) {
181
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 207 int p0 = s->version > 2 ? p : 0;
182
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 550863 for (i = y = 0; y < s->vlc_n; y++) {
183 550656 int len0 = s->len[p0][y];
184 550656 int limit = VLC_BITS - len0;
185
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 550656 if (limit <= 0 || !len0)
186 537225 continue;
187
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 13431 if ((sign_extend(y, 8) & (s->vlc_n-1)) != y)
188 ✗ continue;
189
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 35412855 for (u = 0; u < s->vlc_n; u++) {
190 35399424 int len1 = s->len[p][u];
191
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 35399424 if (len1 > limit || !len1)
192 35322153 continue;
193
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 77271 if ((sign_extend(u, 8) & (s->vlc_n-1)) != u)
194 ✗ continue;
195
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 77271 av_assert0(i < (1 << VLC_BITS));
196 77271 len[i] = len0 + len1;
197 77271 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
198 77271 symbols[i] = (y << 8) + (u & 0xFF);
199 77271 i++;
200 }
201 }
202 207 ff_vlc_free(&s->vlc[4 + p]);
203
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 207 if ((ret = ff_vlc_init_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
204 bits, 2, 2, symbols, 2, 2, 0)) < 0)
205 ✗ goto out;
206 }
207 } else {
208 16 uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map;
209 int i, b, g, r, code;
210 16 int p0 = s->decorrelate;
211 16 int p1 = !s->decorrelate;
212 /* Restrict the range to +/-16 because that's pretty much guaranteed
213 * to cover all the combinations that fit in 11 bits total, and it
214 * does not matter if we miss a few rare codes. */
215
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 528 for (i = 0, g = -16; g < 16; g++) {
216 512 int len0 = s->len[p0][g & 255];
217 512 int limit0 = VLC_BITS - len0;
218
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 512 if (limit0 < 2 || !len0)
219 ✗ continue;
220
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 16896 for (b = -16; b < 16; b++) {
221 16384 int len1 = s->len[p1][b & 255];
222 16384 int limit1 = limit0 - len1;
223
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 16384 if (limit1 < 1 || !len1)
224 12656 continue;
225 3728 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
226
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 123024 for (r = -16; r < 16; r++) {
227 119296 int len2 = s->len[2][r & 255];
228
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 119296 if (len2 > limit1 || !len2)
229 108368 continue;
230
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 10928 av_assert0(i < (1 << VLC_BITS));
231 10928 len[i] = len0 + len1 + len2;
232 10928 bits[i] = (code << len2) + s->bits[2][r & 255];
233
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 10928 if (s->decorrelate) {
234 10928 map[i][G] = g;
235 10928 map[i][B] = g + b;
236 10928 map[i][R] = g + r;
237 } else {
238 ✗ map[i][B] = g;
239 ✗ map[i][G] = b;
240 ✗ map[i][R] = r;
241 }
242 10928 i++;
243 }
244 }
245 }
246 16 ff_vlc_free(&s->vlc[4]);
247
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 16 if ((ret = vlc_init(&s->vlc[4], VLC_BITS, i, len, 1, 1,
248 bits, 2, 2, 0)) < 0)
249 ✗ goto out;
250 }
251 85 ret = 0;
252 85 out:
253 85 av_freep(&symbols);
254 85 return ret;
255 }
256
257 85 static int read_huffman_tables(HYuvDecContext *s, const uint8_t *src, int length)
258 {
259 GetByteContext gb;
260 int i, ret;
261 85 int count = 3;
262
263 85 bytestream2_init(&gb, src, length);
264
265
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 85 if (s->version > 2)
266 32 count = 1 + s->alpha + 2*s->chroma;
267
268
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 340 for (i = 0; i < count; i++) {
269
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 255 if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
270 ✗ return ret;
271
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 255 if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
272 ✗ return ret;
273 255 ff_vlc_free(&s->vlc[i]);
274
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 255 if ((ret = vlc_init(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
275 s->bits[i], 4, 4, 0)) < 0)
276 ✗ return ret;
277 }
278
279
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 85 if ((ret = generate_joint_tables(s)) < 0)
280 ✗ return ret;
281
282 85 return bytestream2_tell(&gb);
283 }
284
285 ✗ static int read_old_huffman_tables(HYuvDecContext *s)
286 {
287 GetByteContext gb;
288 int i, ret;
289
290 ✗ bytestream2_init(&gb, classic_shift_luma,
291 sizeof(classic_shift_luma));
292 ✗ ret = read_len_table(s->len[0], &gb, 256);
293 av_assert1(ret >= 0);
294
295 ✗ bytestream2_init(&gb, classic_shift_chroma,
296 sizeof(classic_shift_chroma));
297 ✗ ret = read_len_table(s->len[1], &gb, 256);
298 av_assert1(ret >= 0);
299
300 ✗ for (i = 0; i < 256; i++)
301 ✗ s->bits[0][i] = classic_add_luma[i];
302 ✗ for (i = 0; i < 256; i++)
303 ✗ s->bits[1][i] = classic_add_chroma[i];
304
305 ✗ if (s->bitstream_bpp >= 24) {
306 ✗ memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
307 ✗ memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
308 }
309 ✗ memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
310 ✗ memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));
311
312 ✗ for (i = 0; i < 4; i++) {
313 ✗ ff_vlc_free(&s->vlc[i]);
314 ✗ if ((ret = vlc_init(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
315 s->bits[i], 4, 4, 0)) < 0)
316 ✗ return ret;
317 }
318
319 ✗ if ((ret = generate_joint_tables(s)) < 0)
320 ✗ return ret;
321
322 ✗ return 0;
323 }
324
325 85 static av_cold int decode_end(AVCodecContext *avctx)
326 {
327 85 HYuvDecContext *s = avctx->priv_data;
328 int i;
329
330
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 340 for (int i = 0; i < 3; i++)
331 255 av_freep(&s->temp[i]);
332
333 85 av_freep(&s->bitstream_buffer);
334
335
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 765 for (i = 0; i < 8; i++)
336 680 ff_vlc_free(&s->vlc[i]);
337
338 85 return 0;
339 }
340
341 85 static av_cold int decode_init(AVCodecContext *avctx)
342 {
343 85 HYuvDecContext *s = avctx->priv_data;
344 int ret;
345
346 85 ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
347
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 85 if (ret < 0)
348 ✗ return ret;
349
350 85 s->flags = avctx->flags;
351
352 85 ff_bswapdsp_init(&s->bdsp);
353 85 ff_huffyuvdsp_init(&s->hdsp);
354 85 ff_llviddsp_init(&s->llviddsp);
355
356 85 s->interlaced = avctx->height > 288;
357 85 s->bgr32 = 1;
358
359
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 85 if (avctx->extradata_size) {
360
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 85 if ((avctx->bits_per_coded_sample & 7) &&
361
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 28 avctx->bits_per_coded_sample != 12)
362 ✗ s->version = 1; // do such files exist at all?
363
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 85 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
364 53 s->version = 2;
365 else
366 32 s->version = 3;
367 } else
368 ✗ s->version = 0;
369
370 85 s->bps = 8;
371 85 s->n = 1<<s->bps;
372 85 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
373 85 s->chroma = 1;
374
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 85 if (s->version >= 2) {
375 int method, interlace;
376
377
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 85 if (avctx->extradata_size < 4)
378 ✗ return AVERROR_INVALIDDATA;
379
380 85 method = avctx->extradata[0];
381 85 s->decorrelate = method & 64 ? 1 : 0;
382 85 s->predictor = method & 63;
383
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 85 if (s->version == 2) {
384 53 s->bitstream_bpp = avctx->extradata[1];
385
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 53 if (s->bitstream_bpp == 0)
386 ✗ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
387 } else {
388 32 s->bps = (avctx->extradata[1] >> 4) + 1;
389 32 s->n = 1<<s->bps;
390 32 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
391 32 s->chroma_h_shift = avctx->extradata[1] & 3;
392 32 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
393 32 s->yuv = !!(avctx->extradata[2] & 1);
394 32 s->chroma= !!(avctx->extradata[2] & 3);
395 32 s->alpha = !!(avctx->extradata[2] & 4);
396 }
397 85 interlace = (avctx->extradata[2] & 0x30) >> 4;
398
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 85 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
399 85 s->context = avctx->extradata[2] & 0x40 ? 1 : 0;
400
401
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 85 if ((ret = read_huffman_tables(s, avctx->extradata + 4,
402 85 avctx->extradata_size - 4)) < 0)
403 ✗ return ret;
404 } else {
405 ✗ switch (avctx->bits_per_coded_sample & 7) {
406 ✗ case 1:
407 ✗ s->predictor = LEFT;
408 ✗ s->decorrelate = 0;
409 ✗ break;
410 ✗ case 2:
411 ✗ s->predictor = LEFT;
412 ✗ s->decorrelate = 1;
413 ✗ break;
414 ✗ case 3:
415 ✗ s->predictor = PLANE;
416 ✗ s->decorrelate = avctx->bits_per_coded_sample >= 24;
417 ✗ break;
418 ✗ case 4:
419 ✗ s->predictor = MEDIAN;
420 ✗ s->decorrelate = 0;
421 ✗ break;
422 ✗ default:
423 ✗ s->predictor = LEFT; // OLD
424 ✗ s->decorrelate = 0;
425 ✗ break;
426 }
427 ✗ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
428 ✗ s->context = 0;
429
430 ✗ if ((ret = read_old_huffman_tables(s)) < 0)
431 ✗ return ret;
432 }
433
434
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 85 if (s->version <= 2) {
435
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 53 switch (s->bitstream_bpp) {
436 28 case 12:
437 28 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
438 28 s->yuv = 1;
439 28 break;
440 9 case 16:
441
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 9 if (s->yuy2)
442 ✗ avctx->pix_fmt = AV_PIX_FMT_YUYV422;
443 else
444 9 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
445 9 s->yuv = 1;
446 9 break;
447 8 case 24:
448
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 8 if (s->bgr32)
449 8 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
450 else
451 ✗ avctx->pix_fmt = AV_PIX_FMT_BGR24;
452 8 break;
453 8 case 32:
454
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 8 av_assert0(s->bgr32);
455 8 avctx->pix_fmt = AV_PIX_FMT_RGB32;
456 8 s->alpha = 1;
457 8 break;
458 ✗ default:
459 ✗ return AVERROR_INVALIDDATA;
460 }
461 53 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
462 &s->chroma_h_shift,
463 &s->chroma_v_shift);
464 } else {
465
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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)) {
466 ✗ case 0x070:
467 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY8;
468 ✗ break;
469 ✗ case 0x0F0:
470 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16;
471 ✗ break;
472 ✗ case 0x470:
473 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP;
474 ✗ break;
475 ✗ case 0x480:
476 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP9;
477 ✗ break;
478 ✗ case 0x490:
479 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP10;
480 ✗ break;
481 ✗ case 0x4B0:
482 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP12;
483 ✗ break;
484 ✗ case 0x4D0:
485 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP14;
486 ✗ break;
487 ✗ case 0x4F0:
488 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP16;
489 ✗ break;
490 ✗ case 0x570:
491 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAP;
492 ✗ break;
493 8 case 0x670:
494 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
495 8 break;
496 ✗ case 0x680:
497 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
498 ✗ break;
499 ✗ case 0x690:
500 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
501 ✗ break;
502 ✗ case 0x6B0:
503 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
504 ✗ break;
505 ✗ case 0x6D0:
506 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
507 ✗ break;
508 8 case 0x6F0:
509 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
510 8 break;
511 ✗ case 0x671:
512 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P;
513 ✗ break;
514 ✗ case 0x681:
515 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
516 ✗ break;
517 8 case 0x691:
518 8 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
519 8 break;
520 ✗ case 0x6B1:
521 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
522 ✗ break;
523 ✗ case 0x6D1:
524 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
525 ✗ break;
526 ✗ case 0x6F1:
527 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
528 ✗ break;
529 ✗ case 0x672:
530 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV411P;
531 ✗ break;
532 ✗ case 0x674:
533 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV440P;
534 ✗ break;
535 ✗ case 0x675:
536 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
537 ✗ break;
538 ✗ case 0x685:
539 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
540 ✗ break;
541 ✗ case 0x695:
542 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
543 ✗ break;
544 8 case 0x6B5:
545 8 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
546 8 break;
547 ✗ case 0x6D5:
548 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
549 ✗ break;
550 ✗ case 0x6F5:
551 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
552 ✗ break;
553 ✗ case 0x67A:
554 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV410P;
555 ✗ break;
556 ✗ case 0x770:
557 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
558 ✗ break;
559 ✗ case 0x780:
560 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
561 ✗ break;
562 ✗ case 0x790:
563 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
564 ✗ break;
565 ✗ case 0x7F0:
566 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
567 ✗ break;
568 ✗ case 0x771:
569 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
570 ✗ break;
571 ✗ case 0x781:
572 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
573 ✗ break;
574 ✗ case 0x791:
575 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
576 ✗ break;
577 ✗ case 0x7F1:
578 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
579 ✗ break;
580 ✗ case 0x775:
581 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
582 ✗ break;
583 ✗ case 0x785:
584 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
585 ✗ break;
586 ✗ case 0x795:
587 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
588 ✗ break;
589 ✗ case 0x7F5:
590 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
591 ✗ break;
592 ✗ default:
593 ✗ return AVERROR_INVALIDDATA;
594 }
595 }
596
597
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 85 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
598 ✗ av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
599 ✗ return AVERROR_INVALIDDATA;
600 }
601
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 85 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P &&
602
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 2 avctx->width % 4) {
603 ✗ av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 "
604 "for this combination of colorspace and predictor type.\n");
605 ✗ return AVERROR_INVALIDDATA;
606 }
607
608
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 340 for (int i = 0; i < 3; i++) {
609 255 s->temp[i] = av_malloc(4 * avctx->width + 16);
610
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 255 if (!s->temp[i])
611 ✗ return AVERROR(ENOMEM);
612 }
613
614 85 return 0;
615 }
616
617 /** Subset of GET_VLC for use in hand-roller VLC code */
618 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
619 code = table[index].sym; \
620 n = table[index].len; \
621 if (max_depth > 1 && n < 0) { \
622 LAST_SKIP_BITS(name, gb, bits); \
623 UPDATE_CACHE(name, gb); \
624 \
625 nb_bits = -n; \
626 index = SHOW_UBITS(name, gb, nb_bits) + code; \
627 code = table[index].sym; \
628 n = table[index].len; \
629 if (max_depth > 2 && n < 0) { \
630 LAST_SKIP_BITS(name, gb, nb_bits); \
631 UPDATE_CACHE(name, gb); \
632 \
633 nb_bits = -n; \
634 index = SHOW_UBITS(name, gb, nb_bits) + code; \
635 code = table[index].sym; \
636 n = table[index].len; \
637 } \
638 } \
639 dst = code; \
640 LAST_SKIP_BITS(name, gb, n)
641
642
643 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
644 bits, max_depth, OP) \
645 do { \
646 unsigned int index = SHOW_UBITS(name, gb, bits); \
647 int code, n = dtable[index].len; \
648 \
649 if (n<=0) { \
650 int nb_bits; \
651 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
652 \
653 UPDATE_CACHE(re, gb); \
654 index = SHOW_UBITS(name, gb, bits); \
655 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
656 } else { \
657 code = dtable[index].sym; \
658 OP(dst0, dst1, code); \
659 LAST_SKIP_BITS(name, gb, n); \
660 } \
661 } while (0)
662
663 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
664
665 #define READ_2PIX(dst0, dst1, plane1) \
666 UPDATE_CACHE(re, &s->gb); \
667 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
668 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
669
670 70440 static void decode_422_bitstream(HYuvDecContext *s, int count)
671 {
672 int i, icount;
673 70440 OPEN_READER(re, &s->gb);
674 70440 count /= 2;
675
676 70440 icount = get_bits_left(&s->gb) / (32 * 4);
677
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 70440 if (count >= icount) {
678
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 151860 for (i = 0; i < icount; i++) {
679
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 150135 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
680
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 150135 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
681 }
682
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 127584 for (; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
683
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 125859 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
684
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 125859 if (BITS_LEFT(re, &s->gb) <= 0) break;
685
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 125859 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
686 }
687
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 1725 for (; i < count; i++)
688 ✗ s->temp[0][2 * i ] = s->temp[1][i] =
689 ✗ s->temp[0][2 * i + 1] = s->temp[2][i] = 0;
690 } else {
691
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 12334861 for (i = 0; i < count; i++) {
692
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 12266146 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
693
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 12266146 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
694 }
695 }
696 70440 CLOSE_READER(re, &s->gb);
697 70440 }
698
699 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
700 UPDATE_CACHE(re, &s->gb); \
701 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
702 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
703
704 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
705
706 /* TODO instead of restarting the read when the code isn't in the first level
707 * of the joint table, jump into the 2nd level of the individual table. */
708 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
709 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)*4;\
710 dst0 += get_bits(&s->gb, 2);\
711 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)*4;\
712 dst1 += get_bits(&s->gb, 2);\
713 }
714 493900 static void decode_plane_bitstream(HYuvDecContext *s, int width, int plane)
715 {
716 493900 int i, count = width/2;
717
718
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 493900 if (s->bps <= 8) {
719 134700 OPEN_READER(re, &s->gb);
720
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 134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
721
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 213540 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
722
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 212153 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
723 }
724 } else {
725
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 22817460 for(i=0; i<count; i++){
726
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 22684147 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
727 }
728 }
729
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 134700 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
730 unsigned int index;
731 int nb_bits, code, n;
732 ✗ UPDATE_CACHE(re, &s->gb);
733 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
734 ✗ VLC_INTERN(s->temp[0][width-1], s->vlc[plane].table,
735 &s->gb, re, VLC_BITS, 3);
736 }
737 134700 CLOSE_READER(re, &s->gb);
738
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 359200 } else if (s->bps <= 14) {
739 224500 OPEN_READER(re, &s->gb);
740
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 224500 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
741
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 89561 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
742
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 88392 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
743 }
744 } else {
745
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746
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 26621408 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
747 }
748 }
749
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 224500 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
750 unsigned int index;
751 int nb_bits, code, n;
752 5100 UPDATE_CACHE(re, &s->gb);
753 5100 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
754
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 5100 VLC_INTERN(s->temp16[0][width-1], s->vlc[plane].table,
755 &s->gb, re, VLC_BITS, 3);
756 }
757 224500 CLOSE_READER(re, &s->gb);
758 } else {
759
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 134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
760
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 57258 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
761 56886 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
762 }
763 } else {
764
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 22973742 for(i=0; i<count; i++){
765 22839414 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
766 }
767 }
768
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 134700 if( width&1 && get_bits_left(&s->gb)>0 ) {
769 ✗ int dst = (unsigned)get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;
770 ✗ s->temp16[0][width-1] = dst + get_bits(&s->gb, 2);
771 }
772 }
773 493900 }
774
775 25490 static void decode_gray_bitstream(HYuvDecContext *s, int count)
776 {
777 int i;
778 25490 OPEN_READER(re, &s->gb);
779 25490 count /= 2;
780
781
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 25490 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
782
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 75357 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
783
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 74930 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
784 }
785
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 427 for (; i < count; i++)
786 ✗ s->temp[0][2 * i] = s->temp[0][2 * i + 1] = 0;
787 } else {
788
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 4860583 for (i = 0; i < count; i++) {
789
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 4835520 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
790 }
791 }
792 25490 CLOSE_READER(re, &s->gb);
793 25490 }
794
795 89800 static av_always_inline void decode_bgr_1(HYuvDecContext *s, int count,
796 int decorrelate, int alpha)
797 {
798 int i;
799 89800 OPEN_READER(re, &s->gb);
800
801
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 30617800 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
802 unsigned int index;
803 int code, n, nb_bits;
804
805 30528000 UPDATE_CACHE(re, &s->gb);
806 30528000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
807 30528000 n = s->vlc[4].table[index].len;
808
809
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 30528000 if (n>0) {
810 13538088 code = s->vlc[4].table[index].sym;
811 13538088 *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code];
812 13538088 LAST_SKIP_BITS(re, &s->gb, n);
813 } else {
814
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 16989912 if (decorrelate) {
815
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 16989912 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
816 &s->gb, re, VLC_BITS, 3);
817
818 16989912 UPDATE_CACHE(re, &s->gb);
819 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
820
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 16989912 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
821 16989912 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
822
823 16989912 UPDATE_CACHE(re, &s->gb);
824 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
825
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 16989912 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
826 16989912 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
827 } else {
828 ✗ VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
829 &s->gb, re, VLC_BITS, 3);
830
831 ✗ UPDATE_CACHE(re, &s->gb);
832 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
833 ✗ VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
834 &s->gb, re, VLC_BITS, 3);
835
836 ✗ UPDATE_CACHE(re, &s->gb);
837 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
838 ✗ VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
839 &s->gb, re, VLC_BITS, 3);
840 }
841 }
842
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 30528000 if (alpha) {
843 15264000 UPDATE_CACHE(re, &s->gb);
844 15264000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
845
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 15264000 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
846 &s->gb, re, VLC_BITS, 3);
847 } else
848 15264000 s->temp[0][4 * i + A] = 0;
849 }
850 89800 CLOSE_READER(re, &s->gb);
851 89800 }
852
853 89800 static void decode_bgr_bitstream(HYuvDecContext *s, int count)
854 {
855
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 89800 if (s->decorrelate) {
856
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 89800 if (s->bitstream_bpp == 24)
857 44900 decode_bgr_1(s, count, 1, 0);
858 else
859 44900 decode_bgr_1(s, count, 1, 1);
860 } else {
861 ✗ if (s->bitstream_bpp == 24)
862 ✗ decode_bgr_1(s, count, 0, 0);
863 else
864 ✗ decode_bgr_1(s, count, 0, 1);
865 }
866 89800 }
867
868 71540 static void draw_slice(HYuvDecContext *s, AVCodecContext *avctx, AVFrame *frame, int y)
869 {
870 int h, cy, i;
871 int offset[AV_NUM_DATA_POINTERS];
872
873
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 71540 if (!avctx->draw_horiz_band)
874 71540 return;
875
876 ✗ h = y - s->last_slice_end;
877 ✗ y -= h;
878
879 ✗ if (s->bitstream_bpp == 12)
880 ✗ cy = y >> 1;
881 else
882 ✗ cy = y;
883
884 ✗ offset[0] = frame->linesize[0] * y;
885 ✗ offset[1] = frame->linesize[1] * cy;
886 ✗ offset[2] = frame->linesize[2] * cy;
887 ✗ for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
888 ✗ offset[i] = 0;
889
890 ✗ avctx->draw_horiz_band(avctx, frame, offset, y, 3, h);
891
892 ✗ s->last_slice_end = y + h;
893 }
894
895 404700 static int left_prediction(HYuvDecContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
896 {
897
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 404700 if (s->bps <= 8) {
898 134700 return s->llviddsp.add_left_pred(dst, src, w, acc);
899 } else {
900 270000 return s->llviddsp.add_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
901 }
902 }
903
904 134100 static void add_bytes(HYuvDecContext *s, uint8_t *dst, uint8_t *src, int w)
905 {
906
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 134100 if (s->bps <= 8) {
907 ✗ s->llviddsp.add_bytes(dst, src, w);
908 } else {
909 134100 s->hdsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
910 }
911 134100 }
912
913 89200 static void add_median_prediction(HYuvDecContext *s, uint8_t *dst, const uint8_t *src, const uint8_t *diff, int w, int *left, int *left_top)
914 {
915
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 89200 if (s->bps <= 8) {
916 ✗ s->llviddsp.add_median_pred(dst, src, diff, w, left, left_top);
917 } else {
918 89200 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);
919 }
920 89200 }
921
922 1610 static int decode_slice(AVCodecContext *avctx, AVFrame *p, int height,
923 int buf_size, int y_offset, int table_size)
924 {
925 1610 HYuvDecContext *s = avctx->priv_data;
926 int fake_ystride, fake_ustride, fake_vstride;
927 1610 const int width = avctx->width;
928 1610 const int width2 = avctx->width >> 1;
929 int ret;
930
931
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 1610 if ((ret = init_get_bits8(&s->gb, s->bitstream_buffer + table_size, buf_size - table_size)) < 0)
932 ✗ return ret;
933
934
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 1610 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
935
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 1610 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
936
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 1610 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
937
938
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 1610 if (s->version > 2) {
939 int plane;
940
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 3200 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
941 int left, lefttop, y;
942 2400 int w = width;
943 2400 int h = height;
944 2400 int fake_stride = fake_ystride;
945
946
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 2400 if (s->chroma && (plane == 1 || plane == 2)) {
947 1600 w >>= s->chroma_h_shift;
948 1600 h >>= s->chroma_v_shift;
949
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 1600 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
950 }
951
952
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 2400 switch (s->predictor) {
953 1800 case LEFT:
954 case PLANE:
955 1800 decode_plane_bitstream(s, w, plane);
956 1800 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
957
958
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 404100 for (y = 1; y < h; y++) {
959 402300 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
960
961 402300 decode_plane_bitstream(s, w, plane);
962 402300 left = left_prediction(s, dst, s->temp[0], w, left);
963
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 402300 if (s->predictor == PLANE) {
964
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 134100 if (y > s->interlaced) {
965 134100 add_bytes(s, dst, dst - fake_stride, w);
966 }
967 }
968 }
969
970 1800 break;
971 600 case MEDIAN:
972 600 decode_plane_bitstream(s, w, plane);
973 600 left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
974
975 600 y = 1;
976
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 600 if (y >= h)
977 ✗ break;
978
979 /* second line is left predicted for interlaced case */
980
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 600 if (s->interlaced) {
981 ✗ decode_plane_bitstream(s, w, plane);
982 ✗ left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
983 ✗ y++;
984 ✗ if (y >= h)
985 ✗ break;
986 }
987
988 600 lefttop = p->data[plane][0];
989 600 decode_plane_bitstream(s, w, plane);
990 600 add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
991 600 y++;
992
993
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 89200 for (; y<h; y++) {
994 uint8_t *dst;
995
996 88600 decode_plane_bitstream(s, w, plane);
997
998 88600 dst = p->data[plane] + p->linesize[plane] * y;
999
1000 88600 add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
1001 }
1002
1003 600 break;
1004 }
1005 }
1006 800 draw_slice(s, avctx, p, height);
1007
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 810 } else if (s->bitstream_bpp < 24) {
1008 int y, cy;
1009 int lefty, leftu, leftv;
1010 int lefttopy, lefttopu, lefttopv;
1011
1012
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 410 if (s->yuy2) {
1013 ✗ p->data[0][3] = get_bits(&s->gb, 8);
1014 ✗ p->data[0][2] = get_bits(&s->gb, 8);
1015 ✗ p->data[0][1] = get_bits(&s->gb, 8);
1016 ✗ p->data[0][0] = get_bits(&s->gb, 8);
1017
1018 ✗ av_log(avctx, AV_LOG_ERROR,
1019 "YUY2 output is not implemented yet\n");
1020 ✗ return AVERROR_PATCHWELCOME;
1021 } else {
1022 410 leftv =
1023 410 p->data[2][0 + y_offset * p->linesize[2]] = get_bits(&s->gb, 8);
1024 410 lefty =
1025 410 p->data[0][1 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
1026 410 leftu =
1027 410 p->data[1][0 + y_offset * p->linesize[1]] = get_bits(&s->gb, 8);
1028 410 p->data[0][0 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
1029
1030
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 410 switch (s->predictor) {
1031 360 case LEFT:
1032 case PLANE:
1033 360 decode_422_bitstream(s, width - 2);
1034 720 lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0] * y_offset + 2, s->temp[0],
1035 360 width - 2, lefty);
1036
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 360 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1037 360 leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[1] * y_offset + 1, s->temp[1], width2 - 1, leftu);
1038 360 leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[2] * y_offset + 1, s->temp[2], width2 - 1, leftv);
1039 }
1040
1041
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 55990 for (cy = y = 1; y < height; y++, cy++) {
1042 uint8_t *ydst, *udst, *vdst;
1043
1044
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 55840 if (s->bitstream_bpp == 12) {
1045 25490 decode_gray_bitstream(s, width);
1046
1047 25490 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
1048
1049 25490 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
1050 width, lefty);
1051
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 25490 if (s->predictor == PLANE) {
1052 ✗ if (y > s->interlaced)
1053 ✗ s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1054 }
1055 25490 y++;
1056
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 25490 if (y >= height)
1057 210 break;
1058 }
1059
1060 55630 draw_slice(s, avctx, p, y);
1061
1062 55630 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
1063 55630 udst = p->data[1] + p->linesize[1] * (cy + y_offset);
1064 55630 vdst = p->data[2] + p->linesize[2] * (cy + y_offset);
1065
1066 55630 decode_422_bitstream(s, width);
1067 55630 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
1068 width, lefty);
1069
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 55630 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1070 55630 leftu = s->llviddsp.add_left_pred(udst, s->temp[1], width2, leftu);
1071 55630 leftv = s->llviddsp.add_left_pred(vdst, s->temp[2], width2, leftv);
1072 }
1073
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 55630 if (s->predictor == PLANE) {
1074 ✗ if (cy > s->interlaced) {
1075 ✗ s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1076 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1077 ✗ s->llviddsp.add_bytes(udst, udst - fake_ustride, width2);
1078 ✗ s->llviddsp.add_bytes(vdst, vdst - fake_vstride, width2);
1079 }
1080 }
1081 }
1082 }
1083 360 draw_slice(s, avctx, p, height);
1084
1085 360 break;
1086 50 case MEDIAN:
1087 /* first line except first 2 pixels is left predicted */
1088 50 decode_422_bitstream(s, width - 2);
1089 100 lefty = s->llviddsp.add_left_pred(p->data[0] + 2, s->temp[0],
1090 50 width - 2, lefty);
1091
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 50 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1092 50 leftu = s->llviddsp.add_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1093 50 leftv = s->llviddsp.add_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1094 }
1095
1096 50 cy = y = 1;
1097
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 50 if (y >= height)
1098 ✗ break;
1099
1100 /* second line is left predicted for interlaced case */
1101
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 50 if (s->interlaced) {
1102 ✗ decode_422_bitstream(s, width);
1103 ✗ lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0],
1104 ✗ s->temp[0], width, lefty);
1105 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1106 ✗ leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1107 ✗ leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1108 }
1109 ✗ y++;
1110 ✗ cy++;
1111 ✗ if (y >= height)
1112 ✗ break;
1113 }
1114
1115 /* next 4 pixels are left predicted too */
1116 50 decode_422_bitstream(s, 4);
1117 100 lefty = s->llviddsp.add_left_pred(p->data[0] + fake_ystride,
1118 50 s->temp[0], 4, lefty);
1119
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 50 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1120 50 leftu = s->llviddsp.add_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1121 50 leftv = s->llviddsp.add_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1122 }
1123
1124 /* next line except the first 4 pixels is median predicted */
1125 50 lefttopy = p->data[0][3];
1126 50 decode_422_bitstream(s, width - 4);
1127 50 s->llviddsp.add_median_pred(p->data[0] + fake_ystride + 4,
1128 50 p->data[0] + 4, s->temp[0],
1129 50 width - 4, &lefty, &lefttopy);
1130
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 50 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1131 50 lefttopu = p->data[1][1];
1132 50 lefttopv = p->data[2][1];
1133 50 s->llviddsp.add_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1134 50 s->llviddsp.add_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1135 }
1136 50 y++;
1137 50 cy++;
1138
1139
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 14350 for (; y < height; y++, cy++) {
1140 uint8_t *ydst, *udst, *vdst;
1141
1142
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 14300 if (s->bitstream_bpp == 12) {
1143 ✗ while (2 * cy > y) {
1144 ✗ decode_gray_bitstream(s, width);
1145 ✗ ydst = p->data[0] + p->linesize[0] * y;
1146 ✗ s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1147 ✗ s->temp[0], width,
1148 &lefty, &lefttopy);
1149 ✗ y++;
1150 }
1151 ✗ if (y >= height)
1152 ✗ break;
1153 }
1154 14300 draw_slice(s, avctx, p, y);
1155
1156 14300 decode_422_bitstream(s, width);
1157
1158 14300 ydst = p->data[0] + p->linesize[0] * y;
1159 14300 udst = p->data[1] + p->linesize[1] * cy;
1160 14300 vdst = p->data[2] + p->linesize[2] * cy;
1161
1162 14300 s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1163 14300 s->temp[0], width,
1164 &lefty, &lefttopy);
1165
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 14300 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1166 14300 s->llviddsp.add_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1167 14300 s->llviddsp.add_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1168 }
1169 }
1170
1171 50 draw_slice(s, avctx, p, height);
1172 50 break;
1173 }
1174 }
1175 } else {
1176 int y;
1177 uint8_t left[4];
1178 400 const int last_line = (y_offset + height - 1) * p->linesize[0];
1179
1180
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 400 if (s->bitstream_bpp == 32) {
1181 200 left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8);
1182 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1183 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1184 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1185 } else {
1186 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1187 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1188 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1189 200 left[A] = p->data[0][last_line + A] = 255;
1190 200 skip_bits(&s->gb, 8);
1191 }
1192
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 400 if (s->bgr32) {
1194
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 400 switch (s->predictor) {
1195 400 case LEFT:
1196 case PLANE:
1197 400 decode_bgr_bitstream(s, width - 1);
1198 400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4,
1199 400 s->temp[0], width - 1, left);
1200
1201
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 89800 for (y = height - 2; y >= 0; y--) { // Yes it is stored upside down.
1202 89400 decode_bgr_bitstream(s, width);
1203
1204 89400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * (y + y_offset),
1205 89400 s->temp[0], width, left);
1206
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 89400 if (s->predictor == PLANE) {
1207 ✗ if (s->bitstream_bpp != 32)
1208 ✗ left[A] = 0;
1209 ✗ if (y < height - 1 - s->interlaced) {
1210 ✗ s->llviddsp.add_bytes(p->data[0] + p->linesize[0] * (y + y_offset),
1211 ✗ p->data[0] + p->linesize[0] * (y + y_offset) +
1212 ✗ fake_ystride, 4 * width);
1213 }
1214 }
1215 }
1216 // just 1 large slice as this is not possible in reverse order
1217 400 draw_slice(s, avctx, p, height);
1218 400 break;
1219 ✗ default:
1220 ✗ av_log(avctx, AV_LOG_ERROR,
1221 "prediction type not supported!\n");
1222 }
1223 } else {
1224 ✗ av_log(avctx, AV_LOG_ERROR,
1225 "BGR24 output is not implemented yet\n");
1226 ✗ return AVERROR_PATCHWELCOME;
1227 }
1228 }
1229
1230 1610 return 0;
1231 }
1232
1233 1610 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
1234 int *got_frame, AVPacket *avpkt)
1235 {
1236 1610 const uint8_t *buf = avpkt->data;
1237 1610 int buf_size = avpkt->size;
1238 1610 HYuvDecContext *s = avctx->priv_data;
1239 1610 const int width = avctx->width;
1240 1610 const int height = avctx->height;
1241 1610 int slice, table_size = 0, ret, nb_slices;
1242 unsigned slices_info_offset;
1243 int slice_height;
1244
1245
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 1610 if (buf_size < (width * height + 7)/8)
1246 ✗ return AVERROR_INVALIDDATA;
1247
1248 1610 av_fast_padded_malloc(&s->bitstream_buffer,
1249 &s->bitstream_buffer_size,
1250 buf_size);
1251
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 1610 if (!s->bitstream_buffer)
1252 ✗ return AVERROR(ENOMEM);
1253
1254 1610 s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer,
1255 (const uint32_t *) buf, buf_size / 4);
1256
1257
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 1610 if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
1258 ✗ return ret;
1259
1260
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 1610 if (s->context) {
1261 ✗ table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
1262 ✗ if (table_size < 0)
1263 ✗ return table_size;
1264 }
1265
1266
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 1610 if ((unsigned) (buf_size - table_size) >= INT_MAX / 8)
1267 ✗ return AVERROR_INVALIDDATA;
1268
1269 1610 s->last_slice_end = 0;
1270
1271
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 1610 if (avctx->codec_id == AV_CODEC_ID_HYMT &&
1272 ✗ (buf_size > 32 && AV_RL32(avpkt->data + buf_size - 16) == 0)) {
1273 ✗ slices_info_offset = AV_RL32(avpkt->data + buf_size - 4);
1274 ✗ slice_height = AV_RL32(avpkt->data + buf_size - 8);
1275 ✗ nb_slices = AV_RL32(avpkt->data + buf_size - 12);
1276 ✗ if (nb_slices * 8LL + slices_info_offset > buf_size - 16 ||
1277 ✗ s->chroma_v_shift ||
1278 ✗ slice_height <= 0 || nb_slices * (uint64_t)slice_height > height)
1279 ✗ return AVERROR_INVALIDDATA;
1280 } else {
1281 1610 slice_height = height;
1282 1610 nb_slices = 1;
1283 }
1284
1285
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 3220 for (slice = 0; slice < nb_slices; slice++) {
1286 int y_offset, slice_offset, slice_size;
1287
1288
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 1610 if (nb_slices > 1) {
1289 ✗ slice_offset = AV_RL32(avpkt->data + slices_info_offset + slice * 8);
1290 ✗ slice_size = AV_RL32(avpkt->data + slices_info_offset + slice * 8 + 4);
1291
1292 ✗ if (slice_offset < 0 || slice_size <= 0 || (slice_offset&3) ||
1293 ✗ slice_offset + (int64_t)slice_size > buf_size)
1294 ✗ return AVERROR_INVALIDDATA;
1295
1296 ✗ y_offset = height - (slice + 1) * slice_height;
1297 ✗ s->bdsp.bswap_buf((uint32_t *)s->bitstream_buffer,
1298 ✗ (const uint32_t *)(buf + slice_offset), slice_size / 4);
1299 } else {
1300 1610 y_offset = 0;
1301 1610 slice_offset = 0;
1302 1610 slice_size = buf_size;
1303 }
1304
1305 1610 ret = decode_slice(avctx, p, slice_height, slice_size, y_offset, table_size);
1306
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 1610 if (ret < 0)
1307 ✗ return ret;
1308 }
1309
1310 1610 *got_frame = 1;
1311
1312 1610 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1313 }
1314
1315 const FFCodec ff_huffyuv_decoder = {
1316 .p.name = "huffyuv",
1317 CODEC_LONG_NAME("Huffyuv / HuffYUV"),
1318 .p.type = AVMEDIA_TYPE_VIDEO,
1319 .p.id = AV_CODEC_ID_HUFFYUV,
1320 .priv_data_size = sizeof(HYuvDecContext),
1321 .init = decode_init,
1322 .close = decode_end,
1323 FF_CODEC_DECODE_CB(decode_frame),
1324 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1325 AV_CODEC_CAP_FRAME_THREADS,
1326 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1327 };
1328
1329 #if CONFIG_FFVHUFF_DECODER
1330 const FFCodec ff_ffvhuff_decoder = {
1331 .p.name = "ffvhuff",
1332 CODEC_LONG_NAME("Huffyuv FFmpeg variant"),
1333 .p.type = AVMEDIA_TYPE_VIDEO,
1334 .p.id = AV_CODEC_ID_FFVHUFF,
1335 .priv_data_size = sizeof(HYuvDecContext),
1336 .init = decode_init,
1337 .close = decode_end,
1338 FF_CODEC_DECODE_CB(decode_frame),
1339 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1340 AV_CODEC_CAP_FRAME_THREADS,
1341 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1342 };
1343 #endif /* CONFIG_FFVHUFF_DECODER */
1344
1345 #if CONFIG_HYMT_DECODER
1346 const FFCodec ff_hymt_decoder = {
1347 .p.name = "hymt",
1348 CODEC_LONG_NAME("HuffYUV MT"),
1349 .p.type = AVMEDIA_TYPE_VIDEO,
1350 .p.id = AV_CODEC_ID_HYMT,
1351 .priv_data_size = sizeof(HYuvDecContext),
1352 .init = decode_init,
1353 .close = decode_end,
1354 FF_CODEC_DECODE_CB(decode_frame),
1355 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1356 AV_CODEC_CAP_FRAME_THREADS,
1357 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1358 };
1359 #endif /* CONFIG_HYMT_DECODER */
1360