FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/huffyuvdec.c
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 395 759 52.0%
Functions: 15 17 88.2%
Branches: 323 589 54.8%
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/emms.h"
47 #include "libavutil/imgutils.h"
48 #include "libavutil/mem.h"
49 #include "libavutil/pixdesc.h"
50
51 #define VLC_BITS 12
52
53 typedef struct HYuvDecContext {
54 GetBitContext gb;
55 Predictor predictor;
56 int interlaced;
57 int decorrelate;
58 int bitstream_bpp;
59 int version;
60 int yuy2; //use yuy2 instead of 422P
61 int bgr32; //use bgr32 instead of bgr24
62 int bps;
63 int n; // 1<<bps
64 int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
65 int alpha;
66 int chroma;
67 int yuv;
68 int chroma_h_shift;
69 int chroma_v_shift;
70 int flags;
71 int context;
72 int last_slice_end;
73
74 union {
75 uint8_t *temp[3];
76 uint16_t *temp16[3];
77 };
78 uint8_t len[4][MAX_VLC_N];
79 uint32_t bits[4][MAX_VLC_N];
80 uint32_t pix_bgr_map[1<<VLC_BITS];
81 VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
82 uint8_t *bitstream_buffer;
83 unsigned int bitstream_buffer_size;
84 BswapDSPContext bdsp;
85 HuffYUVDSPContext hdsp;
86 LLVidDSPContext llviddsp;
87 } HYuvDecContext;
88
89
90 static const uint8_t classic_shift_luma[] = {
91 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10,
92 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8,
93 10, 21, 9, 23, 8, 8, 199, 70, 69, 68,
94 };
95
96 static const uint8_t classic_shift_chroma[] = {
97 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83,
98 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141,
99 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79,
100 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34,
101 };
102
103 static const unsigned char classic_add_luma[256] = {
104 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
105 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
106 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
107 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
108 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
109 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
110 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
111 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
112 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
113 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
114 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
115 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
116 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
117 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
118 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
119 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
120 };
121
122 static const unsigned char classic_add_chroma[256] = {
123 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
124 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
125 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
126 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63,
127 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
128 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
129 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111,
130 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1,
131 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134,
132 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96,
133 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
134 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
135 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26,
136 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
137 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
138 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
139 };
140
141 255 static int read_len_table(uint8_t *dst, GetByteContext *gb, int n)
142 {
143 int i, val, repeat;
144
145
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 9582 for (i = 0; i < n;) {
146
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 9327 if (bytestream2_get_bytes_left(gb) <= 0)
147 ✗ goto error;
148 9327 repeat = bytestream2_peek_byteu(gb) >> 5;
149 9327 val = bytestream2_get_byteu(gb) & 0x1F;
150
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 9327 if (repeat == 0) {
151
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 5055 if (bytestream2_get_bytes_left(gb) <= 0)
152 ✗ goto error;
153 5055 repeat = bytestream2_get_byteu(gb);
154 }
155
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 9327 if (i + repeat > n)
156 ✗ goto error;
157
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 572271 while (repeat--)
158 562944 dst[i++] = val;
159 }
160 255 return 0;
161
162 ✗ error:
163 ✗ av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
164 ✗ return AVERROR_INVALIDDATA;
165 }
166
167 85 static int generate_joint_tables(HYuvDecContext *s)
168 {
169 int ret;
170 85 uint16_t *symbols = av_mallocz(5 << VLC_BITS);
171 uint16_t *bits;
172 uint8_t *len;
173
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 85 if (!symbols)
174 ✗ return AVERROR(ENOMEM);
175 85 bits = symbols + (1 << VLC_BITS);
176 85 len = (uint8_t *)(bits + (1 << VLC_BITS));
177
178
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 154 if (s->bitstream_bpp < 24 || s->version > 2) {
179 69 int count = 1 + s->alpha + 2 * s->chroma;
180 int p, i, y, u;
181
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 276 for (p = 0; p < count; p++) {
182
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 207 int p0 = s->version > 2 ? p : 0;
183
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 550863 for (i = y = 0; y < s->vlc_n; y++) {
184 550656 int len0 = s->len[p0][y];
185 550656 int limit = VLC_BITS - len0;
186
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 550656 if (limit <= 0 || !len0)
187 537225 continue;
188
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 13431 if ((sign_extend(y, 8) & (s->vlc_n-1)) != y)
189 ✗ continue;
190
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 35412855 for (u = 0; u < s->vlc_n; u++) {
191 35399424 int len1 = s->len[p][u];
192
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 35399424 if (len1 > limit || !len1)
193 35322153 continue;
194
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 77271 if ((sign_extend(u, 8) & (s->vlc_n-1)) != u)
195 ✗ continue;
196
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 77271 av_assert0(i < (1 << VLC_BITS));
197 77271 len[i] = len0 + len1;
198 77271 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
199 77271 symbols[i] = (y << 8) + (u & 0xFF);
200 77271 i++;
201 }
202 }
203 207 ff_vlc_free(&s->vlc[4 + p]);
204
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 207 if ((ret = ff_vlc_init_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
205 bits, 2, 2, symbols, 2, 2, 0)) < 0)
206 ✗ goto out;
207 }
208 } else {
209 16 uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map;
210 int i, b, g, r, code;
211 16 int p0 = s->decorrelate;
212 16 int p1 = !s->decorrelate;
213 /* Restrict the range to +/-16 because that's pretty much guaranteed
214 * to cover all the combinations that fit in 11 bits total, and it
215 * does not matter if we miss a few rare codes. */
216
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 528 for (i = 0, g = -16; g < 16; g++) {
217 512 int len0 = s->len[p0][g & 255];
218 512 int limit0 = VLC_BITS - len0;
219
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 512 if (limit0 < 2 || !len0)
220 ✗ continue;
221
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 16896 for (b = -16; b < 16; b++) {
222 16384 int len1 = s->len[p1][b & 255];
223 16384 int limit1 = limit0 - len1;
224
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 16384 if (limit1 < 1 || !len1)
225 12656 continue;
226 3728 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
227
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 123024 for (r = -16; r < 16; r++) {
228 119296 int len2 = s->len[2][r & 255];
229
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 119296 if (len2 > limit1 || !len2)
230 108368 continue;
231
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 10928 av_assert0(i < (1 << VLC_BITS));
232 10928 len[i] = len0 + len1 + len2;
233 10928 bits[i] = (code << len2) + s->bits[2][r & 255];
234
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 10928 if (s->decorrelate) {
235 10928 map[i][G] = g;
236 10928 map[i][B] = g + b;
237 10928 map[i][R] = g + r;
238 } else {
239 ✗ map[i][B] = g;
240 ✗ map[i][G] = b;
241 ✗ map[i][R] = r;
242 }
243 10928 i++;
244 }
245 }
246 }
247 16 ff_vlc_free(&s->vlc[4]);
248
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 16 if ((ret = vlc_init(&s->vlc[4], VLC_BITS, i, len, 1, 1,
249 bits, 2, 2, 0)) < 0)
250 ✗ goto out;
251 }
252 85 ret = 0;
253 85 out:
254 85 av_freep(&symbols);
255 85 return ret;
256 }
257
258 85 static int read_huffman_tables(HYuvDecContext *s, const uint8_t *src, int length)
259 {
260 GetByteContext gb;
261 int i, ret;
262 85 int count = 3;
263
264 85 bytestream2_init(&gb, src, length);
265
266
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 85 if (s->version > 2)
267 32 count = 1 + s->alpha + 2*s->chroma;
268
269
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 340 for (i = 0; i < count; i++) {
270
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 255 if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
271 ✗ return ret;
272
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 255 if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
273 ✗ return ret;
274 255 ff_vlc_free(&s->vlc[i]);
275
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 255 if ((ret = vlc_init(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
276 s->bits[i], 4, 4, 0)) < 0)
277 ✗ return ret;
278 }
279
280
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 85 if ((ret = generate_joint_tables(s)) < 0)
281 ✗ return ret;
282
283 85 return bytestream2_tell(&gb);
284 }
285
286 ✗ static int read_old_huffman_tables(HYuvDecContext *s)
287 {
288 GetByteContext gb;
289 int i, ret;
290
291 ✗ bytestream2_init(&gb, classic_shift_luma,
292 sizeof(classic_shift_luma));
293 ✗ ret = read_len_table(s->len[0], &gb, 256);
294 av_assert1(ret >= 0);
295
296 ✗ bytestream2_init(&gb, classic_shift_chroma,
297 sizeof(classic_shift_chroma));
298 ✗ ret = read_len_table(s->len[1], &gb, 256);
299 av_assert1(ret >= 0);
300
301 ✗ for (i = 0; i < 256; i++)
302 ✗ s->bits[0][i] = classic_add_luma[i];
303 ✗ for (i = 0; i < 256; i++)
304 ✗ s->bits[1][i] = classic_add_chroma[i];
305
306 ✗ if (s->bitstream_bpp >= 24) {
307 ✗ memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
308 ✗ memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
309 }
310 ✗ memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
311 ✗ memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));
312
313 ✗ for (i = 0; i < 4; i++) {
314 ✗ ff_vlc_free(&s->vlc[i]);
315 ✗ if ((ret = vlc_init(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
316 s->bits[i], 4, 4, 0)) < 0)
317 ✗ return ret;
318 }
319
320 ✗ if ((ret = generate_joint_tables(s)) < 0)
321 ✗ return ret;
322
323 ✗ return 0;
324 }
325
326 85 static av_cold int decode_end(AVCodecContext *avctx)
327 {
328 85 HYuvDecContext *s = avctx->priv_data;
329 int i;
330
331
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 340 for (int i = 0; i < 3; i++)
332 255 av_freep(&s->temp[i]);
333
334 85 av_freep(&s->bitstream_buffer);
335
336
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 765 for (i = 0; i < 8; i++)
337 680 ff_vlc_free(&s->vlc[i]);
338
339 85 return 0;
340 }
341
342 85 static av_cold int decode_init(AVCodecContext *avctx)
343 {
344 85 HYuvDecContext *s = avctx->priv_data;
345 int ret;
346
347 85 ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
348
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 85 if (ret < 0)
349 ✗ return ret;
350
351 85 s->flags = avctx->flags;
352
353 85 ff_bswapdsp_init(&s->bdsp);
354 85 ff_huffyuvdsp_init(&s->hdsp, avctx->pix_fmt);
355 85 ff_llviddsp_init(&s->llviddsp);
356
357 85 s->interlaced = avctx->height > 288;
358 85 s->bgr32 = 1;
359
360
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 85 if (avctx->extradata_size) {
361
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 85 if ((avctx->bits_per_coded_sample & 7) &&
362
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 28 avctx->bits_per_coded_sample != 12)
363 ✗ s->version = 1; // do such files exist at all?
364
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 85 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
365 53 s->version = 2;
366 else
367 32 s->version = 3;
368 } else
369 ✗ s->version = 0;
370
371 85 s->bps = 8;
372 85 s->n = 1<<s->bps;
373 85 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
374 85 s->chroma = 1;
375
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 85 if (s->version >= 2) {
376 int method, interlace;
377
378
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 85 if (avctx->extradata_size < 4)
379 ✗ return AVERROR_INVALIDDATA;
380
381 85 method = avctx->extradata[0];
382 85 s->decorrelate = method & 64 ? 1 : 0;
383 85 s->predictor = method & 63;
384
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 85 if (s->version == 2) {
385 53 s->bitstream_bpp = avctx->extradata[1];
386
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 53 if (s->bitstream_bpp == 0)
387 ✗ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
388 } else {
389 32 s->bps = (avctx->extradata[1] >> 4) + 1;
390 32 s->n = 1<<s->bps;
391 32 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
392 32 s->chroma_h_shift = avctx->extradata[1] & 3;
393 32 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
394 32 s->yuv = !!(avctx->extradata[2] & 1);
395 32 s->chroma= !!(avctx->extradata[2] & 3);
396 32 s->alpha = !!(avctx->extradata[2] & 4);
397 }
398 85 interlace = (avctx->extradata[2] & 0x30) >> 4;
399
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 85 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
400 85 s->context = avctx->extradata[2] & 0x40 ? 1 : 0;
401
402
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 85 if ((ret = read_huffman_tables(s, avctx->extradata + 4,
403 85 avctx->extradata_size - 4)) < 0)
404 ✗ return ret;
405 } else {
406 ✗ switch (avctx->bits_per_coded_sample & 7) {
407 ✗ case 1:
408 ✗ s->predictor = LEFT;
409 ✗ s->decorrelate = 0;
410 ✗ break;
411 ✗ case 2:
412 ✗ s->predictor = LEFT;
413 ✗ s->decorrelate = 1;
414 ✗ break;
415 ✗ case 3:
416 ✗ s->predictor = PLANE;
417 ✗ s->decorrelate = avctx->bits_per_coded_sample >= 24;
418 ✗ break;
419 ✗ case 4:
420 ✗ s->predictor = MEDIAN;
421 ✗ s->decorrelate = 0;
422 ✗ break;
423 ✗ default:
424 ✗ s->predictor = LEFT; // OLD
425 ✗ s->decorrelate = 0;
426 ✗ break;
427 }
428 ✗ s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
429 ✗ s->context = 0;
430
431 ✗ if ((ret = read_old_huffman_tables(s)) < 0)
432 ✗ return ret;
433 }
434
435
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 85 if (s->version <= 2) {
436
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 53 switch (s->bitstream_bpp) {
437 28 case 12:
438 28 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
439 28 s->yuv = 1;
440 28 break;
441 9 case 16:
442
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 9 if (s->yuy2)
443 ✗ avctx->pix_fmt = AV_PIX_FMT_YUYV422;
444 else
445 9 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
446 9 s->yuv = 1;
447 9 break;
448 8 case 24:
449
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 8 if (s->bgr32)
450 8 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
451 else
452 ✗ avctx->pix_fmt = AV_PIX_FMT_BGR24;
453 8 break;
454 8 case 32:
455
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 8 av_assert0(s->bgr32);
456 8 avctx->pix_fmt = AV_PIX_FMT_RGB32;
457 8 s->alpha = 1;
458 8 break;
459 ✗ default:
460 ✗ return AVERROR_INVALIDDATA;
461 }
462 53 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
463 &s->chroma_h_shift,
464 &s->chroma_v_shift);
465 } else {
466
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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)) {
467 ✗ case 0x070:
468 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY8;
469 ✗ break;
470 ✗ case 0x0F0:
471 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16;
472 ✗ break;
473 ✗ case 0x470:
474 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP;
475 ✗ break;
476 ✗ case 0x480:
477 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP9;
478 ✗ break;
479 ✗ case 0x490:
480 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP10;
481 ✗ break;
482 ✗ case 0x4B0:
483 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP12;
484 ✗ break;
485 ✗ case 0x4D0:
486 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP14;
487 ✗ break;
488 ✗ case 0x4F0:
489 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRP16;
490 ✗ break;
491 ✗ case 0x570:
492 ✗ avctx->pix_fmt = AV_PIX_FMT_GBRAP;
493 ✗ break;
494 8 case 0x670:
495 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
496 8 break;
497 ✗ case 0x680:
498 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
499 ✗ break;
500 ✗ case 0x690:
501 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
502 ✗ break;
503 ✗ case 0x6B0:
504 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
505 ✗ break;
506 ✗ case 0x6D0:
507 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
508 ✗ break;
509 8 case 0x6F0:
510 8 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
511 8 break;
512 ✗ case 0x671:
513 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P;
514 ✗ break;
515 ✗ case 0x681:
516 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
517 ✗ break;
518 8 case 0x691:
519 8 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
520 8 break;
521 ✗ case 0x6B1:
522 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
523 ✗ break;
524 ✗ case 0x6D1:
525 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
526 ✗ break;
527 ✗ case 0x6F1:
528 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
529 ✗ break;
530 ✗ case 0x672:
531 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV411P;
532 ✗ break;
533 ✗ case 0x674:
534 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV440P;
535 ✗ break;
536 ✗ case 0x675:
537 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P;
538 ✗ break;
539 ✗ case 0x685:
540 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
541 ✗ break;
542 ✗ case 0x695:
543 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
544 ✗ break;
545 8 case 0x6B5:
546 8 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
547 8 break;
548 ✗ case 0x6D5:
549 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
550 ✗ break;
551 ✗ case 0x6F5:
552 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
553 ✗ break;
554 ✗ case 0x67A:
555 ✗ avctx->pix_fmt = AV_PIX_FMT_YUV410P;
556 ✗ break;
557 ✗ case 0x770:
558 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
559 ✗ break;
560 ✗ case 0x780:
561 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
562 ✗ break;
563 ✗ case 0x790:
564 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
565 ✗ break;
566 ✗ case 0x7F0:
567 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
568 ✗ break;
569 ✗ case 0x771:
570 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
571 ✗ break;
572 ✗ case 0x781:
573 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
574 ✗ break;
575 ✗ case 0x791:
576 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
577 ✗ break;
578 ✗ case 0x7F1:
579 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
580 ✗ break;
581 ✗ case 0x775:
582 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
583 ✗ break;
584 ✗ case 0x785:
585 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
586 ✗ break;
587 ✗ case 0x795:
588 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
589 ✗ break;
590 ✗ case 0x7F5:
591 ✗ avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
592 ✗ break;
593 ✗ default:
594 ✗ return AVERROR_INVALIDDATA;
595 }
596 }
597
598
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 85 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
599 ✗ av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
600 ✗ return AVERROR_INVALIDDATA;
601 }
602
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 85 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P &&
603 ✗ avctx->width % 4) {
604 ✗ av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 "
605 "for this combination of colorspace and predictor type.\n");
606 ✗ return AVERROR_INVALIDDATA;
607 }
608
609
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 340 for (int i = 0; i < 3; i++) {
610 255 s->temp[i] = av_malloc(4 * avctx->width + 16);
611
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 255 if (!s->temp[i])
612 ✗ return AVERROR(ENOMEM);
613 }
614
615 85 return 0;
616 }
617
618 /** Subset of GET_VLC for use in hand-roller VLC code */
619 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
620 code = table[index].sym; \
621 n = table[index].len; \
622 if (max_depth > 1 && n < 0) { \
623 LAST_SKIP_BITS(name, gb, bits); \
624 UPDATE_CACHE(name, gb); \
625 \
626 nb_bits = -n; \
627 index = SHOW_UBITS(name, gb, nb_bits) + code; \
628 code = table[index].sym; \
629 n = table[index].len; \
630 if (max_depth > 2 && n < 0) { \
631 LAST_SKIP_BITS(name, gb, nb_bits); \
632 UPDATE_CACHE(name, gb); \
633 \
634 nb_bits = -n; \
635 index = SHOW_UBITS(name, gb, nb_bits) + code; \
636 code = table[index].sym; \
637 n = table[index].len; \
638 } \
639 } \
640 dst = code; \
641 LAST_SKIP_BITS(name, gb, n)
642
643
644 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
645 bits, max_depth, OP) \
646 do { \
647 unsigned int index = SHOW_UBITS(name, gb, bits); \
648 int code, n = dtable[index].len; \
649 \
650 if (n<=0) { \
651 int nb_bits; \
652 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
653 \
654 UPDATE_CACHE(re, gb); \
655 index = SHOW_UBITS(name, gb, bits); \
656 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
657 } else { \
658 code = dtable[index].sym; \
659 OP(dst0, dst1, code); \
660 LAST_SKIP_BITS(name, gb, n); \
661 } \
662 } while (0)
663
664 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
665
666 #define READ_2PIX(dst0, dst1, plane1) \
667 UPDATE_CACHE(re, &s->gb); \
668 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
669 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
670
671 70390 static void decode_422_bitstream(HYuvDecContext *s, int count)
672 {
673 int i, icount;
674 70390 OPEN_READER(re, &s->gb);
675 70390 count /= 2;
676
677 70390 icount = get_bits_left(&s->gb) / (32 * 4);
678
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 70390 if (count >= icount) {
679
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 147559 for (i = 0; i < icount; i++) {
680
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 145894 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
681
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 145894 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
682 }
683
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 121205 for (; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
684
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 119540 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
685
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 119540 if (BITS_LEFT(re, &s->gb) <= 0) break;
686
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 119540 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
687 }
688
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 1665 for (; i < count; i++)
689 ✗ s->temp[0][2 * i ] = s->temp[1][i] =
690 ✗ s->temp[0][2 * i + 1] = s->temp[2][i] = 0;
691 } else {
692
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 12345431 for (i = 0; i < count; i++) {
693
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 12276706 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
694
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 12276706 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
695 }
696 }
697 70390 CLOSE_READER(re, &s->gb);
698 70390 }
699
700 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
701 UPDATE_CACHE(re, &s->gb); \
702 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
703 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
704
705 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
706
707 /* TODO instead of restarting the read when the code isn't in the first level
708 * of the joint table, jump into the 2nd level of the individual table. */
709 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
710 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)*4;\
711 dst0 += get_bits(&s->gb, 2);\
712 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)*4;\
713 dst1 += get_bits(&s->gb, 2);\
714 }
715 493900 static void decode_plane_bitstream(HYuvDecContext *s, int width, int plane)
716 {
717 493900 int i, count = width/2;
718
719
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 493900 if (s->bps <= 8) {
720 134700 OPEN_READER(re, &s->gb);
721
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 134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
722
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 213540 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
723
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 212153 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
724 }
725 } else {
726
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 22817460 for(i=0; i<count; i++){
727
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 22684147 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
728 }
729 }
730
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 134700 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
731 unsigned int index;
732 int nb_bits, code, n;
733 ✗ UPDATE_CACHE(re, &s->gb);
734 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
735 ✗ VLC_INTERN(s->temp[0][width-1], s->vlc[plane].table,
736 &s->gb, re, VLC_BITS, 3);
737 }
738 134700 CLOSE_READER(re, &s->gb);
739
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 359200 } else if (s->bps <= 14) {
740 224500 OPEN_READER(re, &s->gb);
741
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 224500 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
742
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 83177 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
743
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 82104 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
744 }
745 } else {
746
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747
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 26627696 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
748 }
749 }
750
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 224500 if( width&1 && BITS_LEFT(re, &s->gb)>0 ) {
751 unsigned int index;
752 int nb_bits, code, n;
753 5100 UPDATE_CACHE(re, &s->gb);
754 5100 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
755
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 5100 VLC_INTERN(s->temp16[0][width-1], s->vlc[plane].table,
756 &s->gb, re, VLC_BITS, 3);
757 }
758 224500 CLOSE_READER(re, &s->gb);
759 } else {
760
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 134700 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
761
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 57258 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
762 56886 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
763 }
764 } else {
765
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 22973742 for(i=0; i<count; i++){
766 22839414 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
767 }
768 }
769
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 134700 if( width&1 && get_bits_left(&s->gb)>0 ) {
770 ✗ int dst = (unsigned)get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;
771 ✗ s->temp16[0][width-1] = dst + get_bits(&s->gb, 2);
772 }
773 }
774 493900 }
775
776 25490 static void decode_gray_bitstream(HYuvDecContext *s, int count)
777 {
778 int i;
779 25490 OPEN_READER(re, &s->gb);
780 25490 count /= 2;
781
782
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 25490 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
783
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 75357 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
784
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 74930 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
785 }
786
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 427 for (; i < count; i++)
787 ✗ s->temp[0][2 * i] = s->temp[0][2 * i + 1] = 0;
788 } else {
789
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 4860583 for (i = 0; i < count; i++) {
790
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 4835520 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
791 }
792 }
793 25490 CLOSE_READER(re, &s->gb);
794 25490 }
795
796 89800 static av_always_inline void decode_bgr_1(HYuvDecContext *s, int count,
797 int decorrelate, int alpha)
798 {
799 int i;
800 89800 OPEN_READER(re, &s->gb);
801
802
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 30617800 for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) {
803 unsigned int index;
804 int code, n, nb_bits;
805
806 30528000 UPDATE_CACHE(re, &s->gb);
807 30528000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
808 30528000 n = s->vlc[4].table[index].len;
809
810
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 30528000 if (n>0) {
811 13538088 code = s->vlc[4].table[index].sym;
812 13538088 *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code];
813 13538088 LAST_SKIP_BITS(re, &s->gb, n);
814 } else {
815
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 16989912 if (decorrelate) {
816
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 16989912 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
817 &s->gb, re, VLC_BITS, 3);
818
819 16989912 UPDATE_CACHE(re, &s->gb);
820 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
821
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 16989912 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
822 16989912 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
823
824 16989912 UPDATE_CACHE(re, &s->gb);
825 16989912 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
826
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 16989912 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
827 16989912 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
828 } else {
829 ✗ VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
830 &s->gb, re, VLC_BITS, 3);
831
832 ✗ UPDATE_CACHE(re, &s->gb);
833 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
834 ✗ VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
835 &s->gb, re, VLC_BITS, 3);
836
837 ✗ UPDATE_CACHE(re, &s->gb);
838 ✗ index = SHOW_UBITS(re, &s->gb, VLC_BITS);
839 ✗ VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
840 &s->gb, re, VLC_BITS, 3);
841 }
842 }
843
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 30528000 if (alpha) {
844 15264000 UPDATE_CACHE(re, &s->gb);
845 15264000 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
846
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 15264000 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
847 &s->gb, re, VLC_BITS, 3);
848 } else
849 15264000 s->temp[0][4 * i + A] = 0;
850 }
851 89800 CLOSE_READER(re, &s->gb);
852 89800 }
853
854 89800 static void decode_bgr_bitstream(HYuvDecContext *s, int count)
855 {
856
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 89800 if (s->decorrelate) {
857
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 89800 if (s->bitstream_bpp == 24)
858 44900 decode_bgr_1(s, count, 1, 0);
859 else
860 44900 decode_bgr_1(s, count, 1, 1);
861 } else {
862 ✗ if (s->bitstream_bpp == 24)
863 ✗ decode_bgr_1(s, count, 0, 0);
864 else
865 ✗ decode_bgr_1(s, count, 0, 1);
866 }
867 89800 }
868
869 71590 static void draw_slice(HYuvDecContext *s, AVCodecContext *avctx, AVFrame *frame, int y)
870 {
871 int h, cy, i;
872 int offset[AV_NUM_DATA_POINTERS];
873
874
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 71590 if (!avctx->draw_horiz_band)
875 71590 return;
876
877 ✗ h = y - s->last_slice_end;
878 ✗ y -= h;
879
880 ✗ if (s->bitstream_bpp == 12)
881 ✗ cy = y >> 1;
882 else
883 ✗ cy = y;
884
885 ✗ offset[0] = frame->linesize[0] * y;
886 ✗ offset[1] = frame->linesize[1] * cy;
887 ✗ offset[2] = frame->linesize[2] * cy;
888 ✗ for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
889 ✗ offset[i] = 0;
890 ✗ emms_c();
891
892 ✗ avctx->draw_horiz_band(avctx, frame, offset, y, 3, h);
893
894 ✗ s->last_slice_end = y + h;
895 }
896
897 493900 static int left_prediction(HYuvDecContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
898 {
899
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 493900 if (s->bps <= 8) {
900 134700 return s->llviddsp.add_left_pred(dst, src, w, acc);
901 } else {
902 359200 return s->llviddsp.add_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
903 }
904 }
905
906 134100 static void add_bytes(HYuvDecContext *s, uint8_t *dst, uint8_t *src, int w)
907 {
908
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 134100 if (s->bps <= 8) {
909 ✗ s->llviddsp.add_bytes(dst, src, w);
910 } else {
911 134100 s->hdsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
912 }
913 134100 }
914
915 ✗ 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)
916 {
917 ✗ if (s->bps <= 8) {
918 ✗ s->llviddsp.add_median_pred(dst, src, diff, w, left, left_top);
919 } else {
920 ✗ 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);
921 }
922 ✗ }
923
924 1610 static int decode_slice(AVCodecContext *avctx, AVFrame *p, int height,
925 int buf_size, int y_offset, int table_size)
926 {
927 1610 HYuvDecContext *s = avctx->priv_data;
928 int fake_ystride, fake_ustride, fake_vstride;
929 1610 const int width = avctx->width;
930 1610 const int width2 = avctx->width >> 1;
931 int ret;
932
933
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 1610 if ((ret = init_get_bits8(&s->gb, s->bitstream_buffer + table_size, buf_size - table_size)) < 0)
934 ✗ return ret;
935
936
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 1610 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
937
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 1610 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
938
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 1610 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
939
940
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 1610 if (s->version > 2) {
941 int plane;
942
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 3200 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
943 int left, lefttop, y;
944 2400 int w = width;
945 2400 int h = height;
946 2400 int fake_stride = fake_ystride;
947
948
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 2400 if (s->chroma && (plane == 1 || plane == 2)) {
949 1600 w >>= s->chroma_h_shift;
950 1600 h >>= s->chroma_v_shift;
951
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 1600 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
952 }
953
954
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 2400 switch (s->predictor) {
955 2400 case LEFT:
956 case PLANE:
957 2400 decode_plane_bitstream(s, w, plane);
958 2400 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
959
960
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 493900 for (y = 1; y < h; y++) {
961 491500 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
962
963 491500 decode_plane_bitstream(s, w, plane);
964 491500 left = left_prediction(s, dst, s->temp[0], w, left);
965
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 491500 if (s->predictor == PLANE) {
966
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 134100 if (y > s->interlaced) {
967 134100 add_bytes(s, dst, dst - fake_stride, w);
968 }
969 }
970 }
971
972 2400 break;
973 ✗ case MEDIAN:
974 ✗ decode_plane_bitstream(s, w, plane);
975 ✗ left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
976
977 ✗ y = 1;
978 ✗ if (y >= h)
979 ✗ break;
980
981 /* second line is left predicted for interlaced case */
982 ✗ if (s->interlaced) {
983 ✗ decode_plane_bitstream(s, w, plane);
984 ✗ left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
985 ✗ y++;
986 ✗ if (y >= h)
987 ✗ break;
988 }
989
990 ✗ lefttop = p->data[plane][0];
991 ✗ decode_plane_bitstream(s, w, plane);
992 ✗ add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
993 ✗ y++;
994
995 ✗ for (; y<h; y++) {
996 uint8_t *dst;
997
998 ✗ decode_plane_bitstream(s, w, plane);
999
1000 ✗ dst = p->data[plane] + p->linesize[plane] * y;
1001
1002 ✗ add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
1003 }
1004
1005 ✗ break;
1006 }
1007 }
1008 800 draw_slice(s, avctx, p, height);
1009
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 810 } else if (s->bitstream_bpp < 24) {
1010 int y, cy;
1011 int lefty, leftu, leftv;
1012 int lefttopy, lefttopu, lefttopv;
1013
1014
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 410 if (s->yuy2) {
1015 ✗ p->data[0][3] = get_bits(&s->gb, 8);
1016 ✗ p->data[0][2] = get_bits(&s->gb, 8);
1017 ✗ p->data[0][1] = get_bits(&s->gb, 8);
1018 ✗ p->data[0][0] = get_bits(&s->gb, 8);
1019
1020 ✗ av_log(avctx, AV_LOG_ERROR,
1021 "YUY2 output is not implemented yet\n");
1022 ✗ return AVERROR_PATCHWELCOME;
1023 } else {
1024 410 leftv =
1025 410 p->data[2][0 + y_offset * p->linesize[2]] = get_bits(&s->gb, 8);
1026 410 lefty =
1027 410 p->data[0][1 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
1028 410 leftu =
1029 410 p->data[1][0 + y_offset * p->linesize[1]] = get_bits(&s->gb, 8);
1030 410 p->data[0][0 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
1031
1032
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 410 switch (s->predictor) {
1033 410 case LEFT:
1034 case PLANE:
1035 410 decode_422_bitstream(s, width - 2);
1036 820 lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0] * y_offset + 2, s->temp[0],
1037 410 width - 2, lefty);
1038
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 410 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1039 410 leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[1] * y_offset + 1, s->temp[1], width2 - 1, leftu);
1040 410 leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[2] * y_offset + 1, s->temp[2], width2 - 1, leftv);
1041 }
1042
1043
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 70390 for (cy = y = 1; y < height; y++, cy++) {
1044 uint8_t *ydst, *udst, *vdst;
1045
1046
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 70190 if (s->bitstream_bpp == 12) {
1047 25490 decode_gray_bitstream(s, width);
1048
1049 25490 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
1050
1051 25490 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
1052 width, lefty);
1053
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 25490 if (s->predictor == PLANE) {
1054 ✗ if (y > s->interlaced)
1055 ✗ s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1056 }
1057 25490 y++;
1058
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 25490 if (y >= height)
1059 210 break;
1060 }
1061
1062 69980 draw_slice(s, avctx, p, y);
1063
1064 69980 ydst = p->data[0] + p->linesize[0] * (y + y_offset);
1065 69980 udst = p->data[1] + p->linesize[1] * (cy + y_offset);
1066 69980 vdst = p->data[2] + p->linesize[2] * (cy + y_offset);
1067
1068 69980 decode_422_bitstream(s, width);
1069 69980 lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
1070 width, lefty);
1071
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 69980 if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1072 69980 leftu = s->llviddsp.add_left_pred(udst, s->temp[1], width2, leftu);
1073 69980 leftv = s->llviddsp.add_left_pred(vdst, s->temp[2], width2, leftv);
1074 }
1075
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 69980 if (s->predictor == PLANE) {
1076 ✗ if (cy > s->interlaced) {
1077 ✗ s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
1078 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1079 ✗ s->llviddsp.add_bytes(udst, udst - fake_ustride, width2);
1080 ✗ s->llviddsp.add_bytes(vdst, vdst - fake_vstride, width2);
1081 }
1082 }
1083 }
1084 }
1085 410 draw_slice(s, avctx, p, height);
1086
1087 410 break;
1088 ✗ case MEDIAN:
1089 /* first line except first 2 pixels is left predicted */
1090 ✗ decode_422_bitstream(s, width - 2);
1091 ✗ lefty = s->llviddsp.add_left_pred(p->data[0] + 2, s->temp[0],
1092 ✗ width - 2, lefty);
1093 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1094 ✗ leftu = s->llviddsp.add_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1095 ✗ leftv = s->llviddsp.add_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1096 }
1097
1098 ✗ cy = y = 1;
1099 ✗ if (y >= height)
1100 ✗ break;
1101
1102 /* second line is left predicted for interlaced case */
1103 ✗ if (s->interlaced) {
1104 ✗ decode_422_bitstream(s, width);
1105 ✗ lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0],
1106 ✗ s->temp[0], width, lefty);
1107 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1108 ✗ leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1109 ✗ leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1110 }
1111 ✗ y++;
1112 ✗ cy++;
1113 ✗ if (y >= height)
1114 ✗ break;
1115 }
1116
1117 /* next 4 pixels are left predicted too */
1118 ✗ decode_422_bitstream(s, 4);
1119 ✗ lefty = s->llviddsp.add_left_pred(p->data[0] + fake_ystride,
1120 ✗ s->temp[0], 4, lefty);
1121 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1122 ✗ leftu = s->llviddsp.add_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1123 ✗ leftv = s->llviddsp.add_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1124 }
1125
1126 /* next line except the first 4 pixels is median predicted */
1127 ✗ lefttopy = p->data[0][3];
1128 ✗ decode_422_bitstream(s, width - 4);
1129 ✗ s->llviddsp.add_median_pred(p->data[0] + fake_ystride + 4,
1130 ✗ p->data[0] + 4, s->temp[0],
1131 ✗ width - 4, &lefty, &lefttopy);
1132 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1133 ✗ lefttopu = p->data[1][1];
1134 ✗ lefttopv = p->data[2][1];
1135 ✗ s->llviddsp.add_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1136 ✗ s->llviddsp.add_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1137 }
1138 ✗ y++;
1139 ✗ cy++;
1140
1141 ✗ for (; y < height; y++, cy++) {
1142 uint8_t *ydst, *udst, *vdst;
1143
1144 ✗ if (s->bitstream_bpp == 12) {
1145 ✗ while (2 * cy > y) {
1146 ✗ decode_gray_bitstream(s, width);
1147 ✗ ydst = p->data[0] + p->linesize[0] * y;
1148 ✗ s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1149 ✗ s->temp[0], width,
1150 &lefty, &lefttopy);
1151 ✗ y++;
1152 }
1153 ✗ if (y >= height)
1154 ✗ break;
1155 }
1156 ✗ draw_slice(s, avctx, p, y);
1157
1158 ✗ decode_422_bitstream(s, width);
1159
1160 ✗ ydst = p->data[0] + p->linesize[0] * y;
1161 ✗ udst = p->data[1] + p->linesize[1] * cy;
1162 ✗ vdst = p->data[2] + p->linesize[2] * cy;
1163
1164 ✗ s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1165 ✗ s->temp[0], width,
1166 &lefty, &lefttopy);
1167 ✗ if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
1168 ✗ s->llviddsp.add_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1169 ✗ s->llviddsp.add_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1170 }
1171 }
1172
1173 ✗ draw_slice(s, avctx, p, height);
1174 ✗ break;
1175 }
1176 }
1177 } else {
1178 int y;
1179 uint8_t left[4];
1180 400 const int last_line = (y_offset + height - 1) * p->linesize[0];
1181
1182
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 400 if (s->bitstream_bpp == 32) {
1183 200 left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8);
1184 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1185 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1186 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1187 } else {
1188 200 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1189 200 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1190 200 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1191 200 left[A] = p->data[0][last_line + A] = 255;
1192 200 skip_bits(&s->gb, 8);
1193 }
1194
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 400 if (s->bgr32) {
1196
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 400 switch (s->predictor) {
1197 400 case LEFT:
1198 case PLANE:
1199 400 decode_bgr_bitstream(s, width - 1);
1200 400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4,
1201 400 s->temp[0], width - 1, left);
1202
1203
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 89800 for (y = height - 2; y >= 0; y--) { // Yes it is stored upside down.
1204 89400 decode_bgr_bitstream(s, width);
1205
1206 89400 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * (y + y_offset),
1207 89400 s->temp[0], width, left);
1208
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 89400 if (s->predictor == PLANE) {
1209 ✗ if (s->bitstream_bpp != 32)
1210 ✗ left[A] = 0;
1211 ✗ if (y < height - 1 - s->interlaced) {
1212 ✗ s->llviddsp.add_bytes(p->data[0] + p->linesize[0] * (y + y_offset),
1213 ✗ p->data[0] + p->linesize[0] * (y + y_offset) +
1214 ✗ fake_ystride, 4 * width);
1215 }
1216 }
1217 }
1218 // just 1 large slice as this is not possible in reverse order
1219 400 draw_slice(s, avctx, p, height);
1220 400 break;
1221 ✗ default:
1222 ✗ av_log(avctx, AV_LOG_ERROR,
1223 "prediction type not supported!\n");
1224 }
1225 } else {
1226 ✗ av_log(avctx, AV_LOG_ERROR,
1227 "BGR24 output is not implemented yet\n");
1228 ✗ return AVERROR_PATCHWELCOME;
1229 }
1230 }
1231
1232 1610 return 0;
1233 }
1234
1235 1610 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
1236 int *got_frame, AVPacket *avpkt)
1237 {
1238 1610 const uint8_t *buf = avpkt->data;
1239 1610 int buf_size = avpkt->size;
1240 1610 HYuvDecContext *s = avctx->priv_data;
1241 1610 const int width = avctx->width;
1242 1610 const int height = avctx->height;
1243 1610 int slice, table_size = 0, ret, nb_slices;
1244 unsigned slices_info_offset;
1245 int slice_height;
1246
1247
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 1610 if (buf_size < (width * height + 7)/8)
1248 ✗ return AVERROR_INVALIDDATA;
1249
1250 1610 av_fast_padded_malloc(&s->bitstream_buffer,
1251 &s->bitstream_buffer_size,
1252 buf_size);
1253
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 1610 if (!s->bitstream_buffer)
1254 ✗ return AVERROR(ENOMEM);
1255
1256 1610 s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer,
1257 (const uint32_t *) buf, buf_size / 4);
1258
1259
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 1610 if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
1260 ✗ return ret;
1261
1262
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 1610 if (s->context) {
1263 ✗ table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
1264 ✗ if (table_size < 0)
1265 ✗ return table_size;
1266 }
1267
1268
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 1610 if ((unsigned) (buf_size - table_size) >= INT_MAX / 8)
1269 ✗ return AVERROR_INVALIDDATA;
1270
1271 1610 s->last_slice_end = 0;
1272
1273
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 1610 if (avctx->codec_id == AV_CODEC_ID_HYMT &&
1274 ✗ (buf_size > 32 && AV_RL32(avpkt->data + buf_size - 16) == 0)) {
1275 ✗ slices_info_offset = AV_RL32(avpkt->data + buf_size - 4);
1276 ✗ slice_height = AV_RL32(avpkt->data + buf_size - 8);
1277 ✗ nb_slices = AV_RL32(avpkt->data + buf_size - 12);
1278 ✗ if (nb_slices * 8LL + slices_info_offset > buf_size - 16 ||
1279 ✗ s->chroma_v_shift ||
1280 ✗ slice_height <= 0 || nb_slices * (uint64_t)slice_height > height)
1281 ✗ return AVERROR_INVALIDDATA;
1282 } else {
1283 1610 slice_height = height;
1284 1610 nb_slices = 1;
1285 }
1286
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 3220 for (slice = 0; slice < nb_slices; slice++) {
1288 int y_offset, slice_offset, slice_size;
1289
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 1610 if (nb_slices > 1) {
1291 ✗ slice_offset = AV_RL32(avpkt->data + slices_info_offset + slice * 8);
1292 ✗ slice_size = AV_RL32(avpkt->data + slices_info_offset + slice * 8 + 4);
1293
1294 ✗ if (slice_offset < 0 || slice_size <= 0 || (slice_offset&3) ||
1295 ✗ slice_offset + (int64_t)slice_size > buf_size)
1296 ✗ return AVERROR_INVALIDDATA;
1297
1298 ✗ y_offset = height - (slice + 1) * slice_height;
1299 ✗ s->bdsp.bswap_buf((uint32_t *)s->bitstream_buffer,
1300 ✗ (const uint32_t *)(buf + slice_offset), slice_size / 4);
1301 } else {
1302 1610 y_offset = 0;
1303 1610 slice_offset = 0;
1304 1610 slice_size = buf_size;
1305 }
1306
1307 1610 ret = decode_slice(avctx, p, slice_height, slice_size, y_offset, table_size);
1308 1610 emms_c();
1309
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 1610 if (ret < 0)
1310 ✗ return ret;
1311 }
1312
1313 1610 *got_frame = 1;
1314
1315 1610 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1316 }
1317
1318 const FFCodec ff_huffyuv_decoder = {
1319 .p.name = "huffyuv",
1320 CODEC_LONG_NAME("Huffyuv / HuffYUV"),
1321 .p.type = AVMEDIA_TYPE_VIDEO,
1322 .p.id = AV_CODEC_ID_HUFFYUV,
1323 .priv_data_size = sizeof(HYuvDecContext),
1324 .init = decode_init,
1325 .close = decode_end,
1326 FF_CODEC_DECODE_CB(decode_frame),
1327 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1328 AV_CODEC_CAP_FRAME_THREADS,
1329 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1330 };
1331
1332 #if CONFIG_FFVHUFF_DECODER
1333 const FFCodec ff_ffvhuff_decoder = {
1334 .p.name = "ffvhuff",
1335 CODEC_LONG_NAME("Huffyuv FFmpeg variant"),
1336 .p.type = AVMEDIA_TYPE_VIDEO,
1337 .p.id = AV_CODEC_ID_FFVHUFF,
1338 .priv_data_size = sizeof(HYuvDecContext),
1339 .init = decode_init,
1340 .close = decode_end,
1341 FF_CODEC_DECODE_CB(decode_frame),
1342 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1343 AV_CODEC_CAP_FRAME_THREADS,
1344 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1345 };
1346 #endif /* CONFIG_FFVHUFF_DECODER */
1347
1348 #if CONFIG_HYMT_DECODER
1349 const FFCodec ff_hymt_decoder = {
1350 .p.name = "hymt",
1351 CODEC_LONG_NAME("HuffYUV MT"),
1352 .p.type = AVMEDIA_TYPE_VIDEO,
1353 .p.id = AV_CODEC_ID_HYMT,
1354 .priv_data_size = sizeof(HYuvDecContext),
1355 .init = decode_init,
1356 .close = decode_end,
1357 FF_CODEC_DECODE_CB(decode_frame),
1358 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND |
1359 AV_CODEC_CAP_FRAME_THREADS,
1360 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1361 };
1362 #endif /* CONFIG_HYMT_DECODER */
1363