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1 | /* |
2 | * huffyuv decoder | |
3 | * | |
4 | * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at> | |
5 | * | |
6 | * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of | |
7 | * the algorithm used | |
8 | * | |
9 | * This file is part of FFmpeg. | |
10 | * | |
11 | * FFmpeg is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU Lesser General Public | |
13 | * License as published by the Free Software Foundation; either | |
14 | * version 2.1 of the License, or (at your option) any later version. | |
15 | * | |
16 | * FFmpeg is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * Lesser General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU Lesser General Public | |
22 | * License along with FFmpeg; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
24 | * | |
25 | * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA | |
26 | */ | |
27 | ||
28 | /** | |
29 | * @file | |
30 | * huffyuv decoder | |
31 | */ | |
32 | ||
33 | #define UNCHECKED_BITSTREAM_READER 1 | |
34 | ||
35 | #include "avcodec.h" | |
36 | #include "get_bits.h" | |
37 | #include "huffyuv.h" | |
38 | #include "huffyuvdsp.h" | |
39 | #include "thread.h" | |
40 | #include "libavutil/pixdesc.h" | |
41 | ||
42 | #define classic_shift_luma_table_size 42 | |
43 | static const unsigned char classic_shift_luma[classic_shift_luma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = { | |
44 | 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10, | |
45 | 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8, | |
46 | 10, 21, 9, 23, 8, 8, 199, 70, 69, 68, 0, | |
47 | 0,0,0,0,0,0,0,0, | |
48 | }; | |
49 | ||
50 | #define classic_shift_chroma_table_size 59 | |
51 | static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = { | |
52 | 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83, | |
53 | 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141, | |
54 | 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79, | |
55 | 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34, 0, | |
56 | 0,0,0,0,0,0,0,0, | |
57 | }; | |
58 | ||
59 | static const unsigned char classic_add_luma[256] = { | |
60 | 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37, | |
61 | 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36, | |
62 | 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36, | |
63 | 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39, | |
64 | 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37, | |
65 | 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29, | |
66 | 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16, | |
67 | 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14, | |
68 | 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6, | |
69 | 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15, | |
70 | 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25, | |
71 | 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49, | |
72 | 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60, | |
73 | 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52, | |
74 | 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43, | |
75 | 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8, | |
76 | }; | |
77 | ||
78 | static const unsigned char classic_add_chroma[256] = { | |
79 | 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9, | |
80 | 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7, | |
81 | 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77, | |
82 | 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63, | |
83 | 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
84 | 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22, | |
85 | 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111, | |
86 | 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1, | |
87 | 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134, | |
88 | 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96, | |
89 | 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41, | |
90 | 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36, | |
91 | 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26, | |
92 | 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13, | |
93 | 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8, | |
94 | 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2, | |
95 | }; | |
96 | ||
97 | static int read_len_table(uint8_t *dst, GetBitContext *gb, int n) | |
98 | { | |
99 | int i, val, repeat; | |
100 | ||
101 | for (i = 0; i < n;) { | |
102 | repeat = get_bits(gb, 3); | |
103 | val = get_bits(gb, 5); | |
104 | if (repeat == 0) | |
105 | repeat = get_bits(gb, 8); | |
106 | if (i + repeat > n || get_bits_left(gb) < 0) { | |
107 | av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n"); | |
108 | return AVERROR_INVALIDDATA; | |
109 | } | |
110 | while (repeat--) | |
111 | dst[i++] = val; | |
112 | } | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static int generate_joint_tables(HYuvContext *s) | |
117 | { | |
118 | int ret; | |
119 | uint16_t *symbols = av_mallocz(5 << VLC_BITS); | |
120 | uint16_t *bits; | |
121 | uint8_t *len; | |
122 | if (!symbols) | |
123 | return AVERROR(ENOMEM); | |
124 | bits = symbols + (1 << VLC_BITS); | |
125 | len = (uint8_t *)(bits + (1 << VLC_BITS)); | |
126 | ||
127 | if (s->bitstream_bpp < 24 || s->version > 2) { | |
128 | int p, i, y, u; | |
129 | for (p = 0; p < 4; p++) { | |
130 | int p0 = s->version > 2 ? p : 0; | |
131 | for (i = y = 0; y < s->vlc_n; y++) { | |
132 | int len0 = s->len[p0][y]; | |
133 | int limit = VLC_BITS - len0; | |
134 | if (limit <= 0 || !len0) | |
135 | continue; | |
136 | if ((sign_extend(y, 8) & (s->vlc_n-1)) != y) | |
137 | continue; | |
138 | for (u = 0; u < s->vlc_n; u++) { | |
139 | int len1 = s->len[p][u]; | |
140 | if (len1 > limit || !len1) | |
141 | continue; | |
142 | if ((sign_extend(u, 8) & (s->vlc_n-1)) != u) | |
143 | continue; | |
144 | av_assert0(i < (1 << VLC_BITS)); | |
145 | len[i] = len0 + len1; | |
146 | bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u]; | |
147 | symbols[i] = (y << 8) + (u & 0xFF); | |
148 | i++; | |
149 | } | |
150 | } | |
151 | ff_free_vlc(&s->vlc[4 + p]); | |
152 | if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1, | |
153 | bits, 2, 2, symbols, 2, 2, 0)) < 0) | |
154 | goto out; | |
155 | } | |
156 | } else { | |
157 | uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map; | |
158 | int i, b, g, r, code; | |
159 | int p0 = s->decorrelate; | |
160 | int p1 = !s->decorrelate; | |
161 | /* Restrict the range to +/-16 because that's pretty much guaranteed | |
162 | * to cover all the combinations that fit in 11 bits total, and it | |
163 | * does not matter if we miss a few rare codes. */ | |
164 | for (i = 0, g = -16; g < 16; g++) { | |
165 | int len0 = s->len[p0][g & 255]; | |
166 | int limit0 = VLC_BITS - len0; | |
167 | if (limit0 < 2 || !len0) | |
168 | continue; | |
169 | for (b = -16; b < 16; b++) { | |
170 | int len1 = s->len[p1][b & 255]; | |
171 | int limit1 = limit0 - len1; | |
172 | if (limit1 < 1 || !len1) | |
173 | continue; | |
174 | code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255]; | |
175 | for (r = -16; r < 16; r++) { | |
176 | int len2 = s->len[2][r & 255]; | |
177 | if (len2 > limit1 || !len2) | |
178 | continue; | |
179 | av_assert0(i < (1 << VLC_BITS)); | |
180 | len[i] = len0 + len1 + len2; | |
181 | bits[i] = (code << len2) + s->bits[2][r & 255]; | |
182 | if (s->decorrelate) { | |
183 | map[i][G] = g; | |
184 | map[i][B] = g + b; | |
185 | map[i][R] = g + r; | |
186 | } else { | |
187 | map[i][B] = g; | |
188 | map[i][G] = b; | |
189 | map[i][R] = r; | |
190 | } | |
191 | i++; | |
192 | } | |
193 | } | |
194 | } | |
195 | ff_free_vlc(&s->vlc[4]); | |
196 | if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1, | |
197 | bits, 2, 2, 0)) < 0) | |
198 | goto out; | |
199 | } | |
200 | ret = 0; | |
201 | out: | |
202 | av_freep(&symbols); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length) | |
207 | { | |
208 | GetBitContext gb; | |
209 | int i, ret; | |
210 | int count = 3; | |
211 | ||
212 | if ((ret = init_get_bits(&gb, src, length * 8)) < 0) | |
213 | return ret; | |
214 | ||
215 | if (s->version > 2) | |
216 | count = 1 + s->alpha + 2*s->chroma; | |
217 | ||
218 | for (i = 0; i < count; i++) { | |
219 | if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0) | |
220 | return ret; | |
221 | if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0) | |
222 | return ret; | |
223 | ff_free_vlc(&s->vlc[i]); | |
224 | if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1, | |
225 | s->bits[i], 4, 4, 0)) < 0) | |
226 | return ret; | |
227 | } | |
228 | ||
229 | if ((ret = generate_joint_tables(s)) < 0) | |
230 | return ret; | |
231 | ||
232 | return (get_bits_count(&gb) + 7) / 8; | |
233 | } | |
234 | ||
235 | static int read_old_huffman_tables(HYuvContext *s) | |
236 | { | |
237 | GetBitContext gb; | |
238 | int i, ret; | |
239 | ||
240 | init_get_bits(&gb, classic_shift_luma, | |
241 | classic_shift_luma_table_size * 8); | |
242 | if ((ret = read_len_table(s->len[0], &gb, 256)) < 0) | |
243 | return ret; | |
244 | ||
245 | init_get_bits(&gb, classic_shift_chroma, | |
246 | classic_shift_chroma_table_size * 8); | |
247 | if ((ret = read_len_table(s->len[1], &gb, 256)) < 0) | |
248 | return ret; | |
249 | ||
250 | for (i = 0; i < 256; i++) | |
251 | s->bits[0][i] = classic_add_luma[i]; | |
252 | for (i = 0; i < 256; i++) | |
253 | s->bits[1][i] = classic_add_chroma[i]; | |
254 | ||
255 | if (s->bitstream_bpp >= 24) { | |
256 | memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t)); | |
257 | memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t)); | |
258 | } | |
259 | memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t)); | |
260 | memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t)); | |
261 | ||
262 | for (i = 0; i < 4; i++) { | |
263 | ff_free_vlc(&s->vlc[i]); | |
264 | if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, | |
265 | s->bits[i], 4, 4, 0)) < 0) | |
266 | return ret; | |
267 | } | |
268 | ||
269 | if ((ret = generate_joint_tables(s)) < 0) | |
270 | return ret; | |
271 | ||
272 | return 0; | |
273 | } | |
274 | ||
275 | static av_cold int decode_init(AVCodecContext *avctx) | |
276 | { | |
277 | HYuvContext *s = avctx->priv_data; | |
278 | int ret; | |
279 | ||
280 | ff_huffyuvdsp_init(&s->hdsp); | |
281 | memset(s->vlc, 0, 4 * sizeof(VLC)); | |
282 | ||
283 | s->interlaced = avctx->height > 288; | |
284 | s->bgr32 = 1; | |
285 | ||
286 | if (avctx->extradata_size) { | |
287 | if ((avctx->bits_per_coded_sample & 7) && | |
288 | avctx->bits_per_coded_sample != 12) | |
289 | s->version = 1; // do such files exist at all? | |
290 | else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0) | |
291 | s->version = 2; | |
292 | else | |
293 | s->version = 3; | |
294 | } else | |
295 | s->version = 0; | |
296 | ||
297 | s->bps = 8; | |
298 | s->n = 1<<s->bps; | |
299 | s->vlc_n = FFMIN(s->n, MAX_VLC_N); | |
300 | s->chroma = 1; | |
301 | if (s->version >= 2) { | |
302 | int method, interlace; | |
303 | ||
304 | if (avctx->extradata_size < 4) | |
305 | return AVERROR_INVALIDDATA; | |
306 | ||
307 | method = avctx->extradata[0]; | |
308 | s->decorrelate = method & 64 ? 1 : 0; | |
309 | s->predictor = method & 63; | |
310 | if (s->version == 2) { | |
311 | s->bitstream_bpp = avctx->extradata[1]; | |
312 | if (s->bitstream_bpp == 0) | |
313 | s->bitstream_bpp = avctx->bits_per_coded_sample & ~7; | |
314 | } else { | |
315 | s->bps = (avctx->extradata[1] >> 4) + 1; | |
316 | s->n = 1<<s->bps; | |
317 | s->vlc_n = FFMIN(s->n, MAX_VLC_N); | |
318 | s->chroma_h_shift = avctx->extradata[1] & 3; | |
319 | s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3; | |
320 | s->yuv = !!(avctx->extradata[2] & 1); | |
321 | s->chroma= !!(avctx->extradata[2] & 3); | |
322 | s->alpha = !!(avctx->extradata[2] & 4); | |
323 | } | |
324 | interlace = (avctx->extradata[2] & 0x30) >> 4; | |
325 | s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced; | |
326 | s->context = avctx->extradata[2] & 0x40 ? 1 : 0; | |
327 | ||
328 | if ((ret = read_huffman_tables(s, avctx->extradata + 4, | |
329 | avctx->extradata_size - 4)) < 0) | |
330 | return ret; | |
331 | } else { | |
332 | switch (avctx->bits_per_coded_sample & 7) { | |
333 | case 1: | |
334 | s->predictor = LEFT; | |
335 | s->decorrelate = 0; | |
336 | break; | |
337 | case 2: | |
338 | s->predictor = LEFT; | |
339 | s->decorrelate = 1; | |
340 | break; | |
341 | case 3: | |
342 | s->predictor = PLANE; | |
343 | s->decorrelate = avctx->bits_per_coded_sample >= 24; | |
344 | break; | |
345 | case 4: | |
346 | s->predictor = MEDIAN; | |
347 | s->decorrelate = 0; | |
348 | break; | |
349 | default: | |
350 | s->predictor = LEFT; // OLD | |
351 | s->decorrelate = 0; | |
352 | break; | |
353 | } | |
354 | s->bitstream_bpp = avctx->bits_per_coded_sample & ~7; | |
355 | s->context = 0; | |
356 | ||
357 | if ((ret = read_old_huffman_tables(s)) < 0) | |
358 | return ret; | |
359 | } | |
360 | ||
361 | if (s->version <= 2) { | |
362 | switch (s->bitstream_bpp) { | |
363 | case 12: | |
364 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; | |
365 | s->yuv = 1; | |
366 | break; | |
367 | case 16: | |
368 | if (s->yuy2) | |
369 | avctx->pix_fmt = AV_PIX_FMT_YUYV422; | |
370 | else | |
371 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; | |
372 | s->yuv = 1; | |
373 | break; | |
374 | case 24: | |
375 | if (s->bgr32) | |
376 | avctx->pix_fmt = AV_PIX_FMT_0RGB32; | |
377 | else | |
378 | avctx->pix_fmt = AV_PIX_FMT_BGR24; | |
379 | break; | |
380 | case 32: | |
381 | av_assert0(s->bgr32); | |
382 | avctx->pix_fmt = AV_PIX_FMT_RGB32; | |
383 | s->alpha = 1; | |
384 | break; | |
385 | default: | |
386 | return AVERROR_INVALIDDATA; | |
387 | } | |
388 | av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, | |
389 | &s->chroma_h_shift, | |
390 | &s->chroma_v_shift); | |
391 | } else { | |
392 | switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) { | |
393 | case 0x070: | |
394 | avctx->pix_fmt = AV_PIX_FMT_GRAY8; | |
395 | break; | |
396 | case 0x0F0: | |
397 | avctx->pix_fmt = AV_PIX_FMT_GRAY16; | |
398 | break; | |
399 | case 0x170: | |
400 | avctx->pix_fmt = AV_PIX_FMT_GRAY8A; | |
401 | break; | |
402 | case 0x470: | |
403 | avctx->pix_fmt = AV_PIX_FMT_GBRP; | |
404 | break; | |
405 | case 0x480: | |
406 | avctx->pix_fmt = AV_PIX_FMT_GBRP9; | |
407 | break; | |
408 | case 0x490: | |
409 | avctx->pix_fmt = AV_PIX_FMT_GBRP10; | |
410 | break; | |
411 | case 0x4B0: | |
412 | avctx->pix_fmt = AV_PIX_FMT_GBRP12; | |
413 | break; | |
414 | case 0x4D0: | |
415 | avctx->pix_fmt = AV_PIX_FMT_GBRP14; | |
416 | break; | |
417 | case 0x4F0: | |
418 | avctx->pix_fmt = AV_PIX_FMT_GBRP16; | |
419 | break; | |
420 | case 0x570: | |
421 | avctx->pix_fmt = AV_PIX_FMT_GBRAP; | |
422 | break; | |
423 | case 0x670: | |
424 | avctx->pix_fmt = AV_PIX_FMT_YUV444P; | |
425 | break; | |
426 | case 0x680: | |
427 | avctx->pix_fmt = AV_PIX_FMT_YUV444P9; | |
428 | break; | |
429 | case 0x690: | |
430 | avctx->pix_fmt = AV_PIX_FMT_YUV444P10; | |
431 | break; | |
432 | case 0x6B0: | |
433 | avctx->pix_fmt = AV_PIX_FMT_YUV444P12; | |
434 | break; | |
435 | case 0x6D0: | |
436 | avctx->pix_fmt = AV_PIX_FMT_YUV444P14; | |
437 | break; | |
438 | case 0x6F0: | |
439 | avctx->pix_fmt = AV_PIX_FMT_YUV444P16; | |
440 | break; | |
441 | case 0x671: | |
442 | avctx->pix_fmt = AV_PIX_FMT_YUV422P; | |
443 | break; | |
444 | case 0x681: | |
445 | avctx->pix_fmt = AV_PIX_FMT_YUV422P9; | |
446 | break; | |
447 | case 0x691: | |
448 | avctx->pix_fmt = AV_PIX_FMT_YUV422P10; | |
449 | break; | |
450 | case 0x6B1: | |
451 | avctx->pix_fmt = AV_PIX_FMT_YUV422P12; | |
452 | break; | |
453 | case 0x6D1: | |
454 | avctx->pix_fmt = AV_PIX_FMT_YUV422P14; | |
455 | break; | |
456 | case 0x6F1: | |
457 | avctx->pix_fmt = AV_PIX_FMT_YUV422P16; | |
458 | break; | |
459 | case 0x672: | |
460 | avctx->pix_fmt = AV_PIX_FMT_YUV411P; | |
461 | break; | |
462 | case 0x674: | |
463 | avctx->pix_fmt = AV_PIX_FMT_YUV440P; | |
464 | break; | |
465 | case 0x675: | |
466 | avctx->pix_fmt = AV_PIX_FMT_YUV420P; | |
467 | break; | |
468 | case 0x685: | |
469 | avctx->pix_fmt = AV_PIX_FMT_YUV420P9; | |
470 | break; | |
471 | case 0x695: | |
472 | avctx->pix_fmt = AV_PIX_FMT_YUV420P10; | |
473 | break; | |
474 | case 0x6B5: | |
475 | avctx->pix_fmt = AV_PIX_FMT_YUV420P12; | |
476 | break; | |
477 | case 0x6D5: | |
478 | avctx->pix_fmt = AV_PIX_FMT_YUV420P14; | |
479 | break; | |
480 | case 0x6F5: | |
481 | avctx->pix_fmt = AV_PIX_FMT_YUV420P16; | |
482 | break; | |
483 | case 0x67A: | |
484 | avctx->pix_fmt = AV_PIX_FMT_YUV410P; | |
485 | break; | |
486 | case 0x770: | |
487 | avctx->pix_fmt = AV_PIX_FMT_YUVA444P; | |
488 | break; | |
489 | case 0x780: | |
490 | avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; | |
491 | break; | |
492 | case 0x790: | |
493 | avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; | |
494 | break; | |
495 | case 0x7F0: | |
496 | avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; | |
497 | break; | |
498 | case 0x771: | |
499 | avctx->pix_fmt = AV_PIX_FMT_YUVA422P; | |
500 | break; | |
501 | case 0x781: | |
502 | avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; | |
503 | break; | |
504 | case 0x791: | |
505 | avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; | |
506 | break; | |
507 | case 0x7F1: | |
508 | avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; | |
509 | break; | |
510 | case 0x775: | |
511 | avctx->pix_fmt = AV_PIX_FMT_YUVA420P; | |
512 | break; | |
513 | case 0x785: | |
514 | avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; | |
515 | break; | |
516 | case 0x795: | |
517 | avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; | |
518 | break; | |
519 | case 0x7F5: | |
520 | avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; | |
521 | break; | |
522 | default: | |
523 | return AVERROR_INVALIDDATA; | |
524 | } | |
525 | } | |
526 | ||
527 | ff_huffyuv_common_init(avctx); | |
528 | ||
529 | if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) { | |
530 | av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n"); | |
531 | return AVERROR_INVALIDDATA; | |
532 | } | |
533 | if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P && | |
534 | avctx->width % 4) { | |
535 | av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 " | |
536 | "for this combination of colorspace and predictor type.\n"); | |
537 | return AVERROR_INVALIDDATA; | |
538 | } | |
539 | ||
540 | if ((ret = ff_huffyuv_alloc_temp(s)) < 0) { | |
541 | ff_huffyuv_common_end(s); | |
542 | return ret; | |
543 | } | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static av_cold int decode_init_thread_copy(AVCodecContext *avctx) | |
549 | { | |
550 | HYuvContext *s = avctx->priv_data; | |
551 | int i, ret; | |
552 | ||
553 | if ((ret = ff_huffyuv_alloc_temp(s)) < 0) { | |
554 | ff_huffyuv_common_end(s); | |
555 | return ret; | |
556 | } | |
557 | ||
558 | for (i = 0; i < 8; i++) | |
559 | s->vlc[i].table = NULL; | |
560 | ||
561 | if (s->version >= 2) { | |
562 | if ((ret = read_huffman_tables(s, avctx->extradata + 4, | |
563 | avctx->extradata_size)) < 0) | |
564 | return ret; | |
565 | } else { | |
566 | if ((ret = read_old_huffman_tables(s)) < 0) | |
567 | return ret; | |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | /** Subset of GET_VLC for use in hand-roller VLC code */ | |
574 | #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \ | |
575 | code = table[index][0]; \ | |
576 | n = table[index][1]; \ | |
577 | if (max_depth > 1 && n < 0) { \ | |
578 | LAST_SKIP_BITS(name, gb, bits); \ | |
579 | UPDATE_CACHE(name, gb); \ | |
580 | \ | |
581 | nb_bits = -n; \ | |
582 | index = SHOW_UBITS(name, gb, nb_bits) + code; \ | |
583 | code = table[index][0]; \ | |
584 | n = table[index][1]; \ | |
585 | if (max_depth > 2 && n < 0) { \ | |
586 | LAST_SKIP_BITS(name, gb, nb_bits); \ | |
587 | UPDATE_CACHE(name, gb); \ | |
588 | \ | |
589 | nb_bits = -n; \ | |
590 | index = SHOW_UBITS(name, gb, nb_bits) + code; \ | |
591 | code = table[index][0]; \ | |
592 | n = table[index][1]; \ | |
593 | } \ | |
594 | } \ | |
595 | dst = code; \ | |
596 | LAST_SKIP_BITS(name, gb, n) | |
597 | ||
598 | ||
599 | #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \ | |
600 | bits, max_depth, OP) \ | |
601 | do { \ | |
602 | unsigned int index = SHOW_UBITS(name, gb, bits); \ | |
603 | int code, n = dtable[index][1]; \ | |
604 | \ | |
605 | if (n<=0) { \ | |
606 | int nb_bits; \ | |
607 | VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \ | |
608 | \ | |
609 | UPDATE_CACHE(re, gb); \ | |
610 | index = SHOW_UBITS(name, gb, bits); \ | |
611 | VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \ | |
612 | } else { \ | |
613 | code = dtable[index][0]; \ | |
614 | OP(dst0, dst1, code); \ | |
615 | LAST_SKIP_BITS(name, gb, n); \ | |
616 | } \ | |
617 | } while (0) | |
618 | ||
619 | #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code | |
620 | ||
621 | #define READ_2PIX(dst0, dst1, plane1) \ | |
622 | UPDATE_CACHE(re, &s->gb); \ | |
623 | GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \ | |
624 | s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits) | |
625 | ||
626 | static void decode_422_bitstream(HYuvContext *s, int count) | |
627 | { | |
628 | int i, icount; | |
629 | OPEN_READER(re, &s->gb); | |
630 | count /= 2; | |
631 | ||
632 | icount = get_bits_left(&s->gb) / (32 * 4); | |
633 | if (count >= icount) { | |
634 | for (i = 0; i < icount; i++) { | |
635 | READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1); | |
636 | READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); | |
637 | } | |
638 | for (; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { | |
639 | READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1); | |
640 | if (BITS_LEFT(re, &s->gb) <= 0) break; | |
641 | READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); | |
642 | } | |
643 | for (; i < count; i++) | |
644 | s->temp[0][2 * i ] = s->temp[1][i] = | |
645 | s->temp[0][2 * i + 1] = s->temp[2][i] = 0; | |
646 | } else { | |
647 | for (i = 0; i < count; i++) { | |
648 | READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1); | |
649 | READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); | |
650 | } | |
651 | } | |
652 | CLOSE_READER(re, &s->gb); | |
653 | } | |
654 | ||
655 | #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \ | |
656 | UPDATE_CACHE(re, &s->gb); \ | |
657 | GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \ | |
658 | s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP) | |
659 | ||
660 | #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8) | |
661 | ||
662 | /* TODO instead of restarting the read when the code isn't in the first level | |
663 | * of the joint table, jump into the 2nd level of the individual table. */ | |
664 | #define READ_2PIX_PLANE16(dst0, dst1, plane){\ | |
665 | dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\ | |
666 | dst0 += get_bits(&s->gb, 2);\ | |
667 | dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\ | |
668 | dst1 += get_bits(&s->gb, 2);\ | |
669 | } | |
670 | static void decode_plane_bitstream(HYuvContext *s, int width, int plane) | |
671 | { | |
672 | int i, count = width/2; | |
673 | ||
674 | if (s->bps <= 8) { | |
675 | OPEN_READER(re, &s->gb); | |
676 | if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { | |
677 | for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { | |
678 | READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits); | |
679 | } | |
680 | } else { | |
681 | for(i=0; i<count; i++){ | |
682 | READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits); | |
683 | } | |
684 | } | |
685 | if( width&1 && BITS_LEFT(re, &s->gb)>0 ) { | |
686 | unsigned int index; | |
687 | int nb_bits, code, n; | |
688 | UPDATE_CACHE(re, &s->gb); | |
689 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
690 | VLC_INTERN(s->temp[0][width-1], s->vlc[plane].table, | |
691 | &s->gb, re, VLC_BITS, 3); | |
692 | } | |
693 | CLOSE_READER(re, &s->gb); | |
694 | } else if (s->bps <= 14) { | |
695 | OPEN_READER(re, &s->gb); | |
696 | if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { | |
697 | for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { | |
698 | READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits); | |
699 | } | |
700 | } else { | |
701 | for(i=0; i<count; i++){ | |
702 | READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits); | |
703 | } | |
704 | } | |
705 | if( width&1 && BITS_LEFT(re, &s->gb)>0 ) { | |
706 | unsigned int index; | |
707 | int nb_bits, code, n; | |
708 | UPDATE_CACHE(re, &s->gb); | |
709 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
710 | VLC_INTERN(s->temp16[0][width-1], s->vlc[plane].table, | |
711 | &s->gb, re, VLC_BITS, 3); | |
712 | } | |
713 | CLOSE_READER(re, &s->gb); | |
714 | } else { | |
715 | if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { | |
716 | for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) { | |
717 | READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane); | |
718 | } | |
719 | } else { | |
720 | for(i=0; i<count; i++){ | |
721 | READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane); | |
722 | } | |
723 | } | |
724 | if( width&1 && get_bits_left(&s->gb)>0 ) { | |
725 | int dst = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2; | |
726 | s->temp16[0][width-1] = dst + get_bits(&s->gb, 2); | |
727 | } | |
728 | } | |
729 | } | |
730 | ||
731 | static void decode_gray_bitstream(HYuvContext *s, int count) | |
732 | { | |
733 | int i; | |
734 | OPEN_READER(re, &s->gb); | |
735 | count /= 2; | |
736 | ||
737 | if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { | |
738 | for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { | |
739 | READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0); | |
740 | } | |
741 | } else { | |
742 | for (i = 0; i < count; i++) { | |
743 | READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0); | |
744 | } | |
745 | } | |
746 | CLOSE_READER(re, &s->gb); | |
747 | } | |
748 | ||
749 | static av_always_inline void decode_bgr_1(HYuvContext *s, int count, | |
750 | int decorrelate, int alpha) | |
751 | { | |
752 | int i; | |
753 | OPEN_READER(re, &s->gb); | |
754 | ||
755 | for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { | |
756 | unsigned int index; | |
757 | int code, n, nb_bits; | |
758 | ||
759 | UPDATE_CACHE(re, &s->gb); | |
760 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
761 | n = s->vlc[4].table[index][1]; | |
762 | ||
763 | if (n>0) { | |
764 | code = s->vlc[4].table[index][0]; | |
765 | *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code]; | |
766 | LAST_SKIP_BITS(re, &s->gb, n); | |
767 | } else { | |
768 | if (decorrelate) { | |
769 | VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table, | |
770 | &s->gb, re, VLC_BITS, 3); | |
771 | ||
772 | UPDATE_CACHE(re, &s->gb); | |
773 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
774 | VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3); | |
775 | s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G]; | |
776 | ||
777 | UPDATE_CACHE(re, &s->gb); | |
778 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
779 | VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3); | |
780 | s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G]; | |
781 | } else { | |
782 | VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table, | |
783 | &s->gb, re, VLC_BITS, 3); | |
784 | ||
785 | UPDATE_CACHE(re, &s->gb); | |
786 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
787 | VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table, | |
788 | &s->gb, re, VLC_BITS, 3); | |
789 | ||
790 | UPDATE_CACHE(re, &s->gb); | |
791 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
792 | VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table, | |
793 | &s->gb, re, VLC_BITS, 3); | |
794 | } | |
795 | } | |
796 | if (alpha) { | |
797 | UPDATE_CACHE(re, &s->gb); | |
798 | index = SHOW_UBITS(re, &s->gb, VLC_BITS); | |
799 | VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table, | |
800 | &s->gb, re, VLC_BITS, 3); | |
801 | } else | |
802 | s->temp[0][4 * i + A] = 0; | |
803 | } | |
804 | CLOSE_READER(re, &s->gb); | |
805 | } | |
806 | ||
807 | static void decode_bgr_bitstream(HYuvContext *s, int count) | |
808 | { | |
809 | if (s->decorrelate) { | |
810 | if (s->bitstream_bpp == 24) | |
811 | decode_bgr_1(s, count, 1, 0); | |
812 | else | |
813 | decode_bgr_1(s, count, 1, 1); | |
814 | } else { | |
815 | if (s->bitstream_bpp == 24) | |
816 | decode_bgr_1(s, count, 0, 0); | |
817 | else | |
818 | decode_bgr_1(s, count, 0, 1); | |
819 | } | |
820 | } | |
821 | ||
822 | static void draw_slice(HYuvContext *s, AVFrame *frame, int y) | |
823 | { | |
824 | int h, cy, i; | |
825 | int offset[AV_NUM_DATA_POINTERS]; | |
826 | ||
827 | if (!s->avctx->draw_horiz_band) | |
828 | return; | |
829 | ||
830 | h = y - s->last_slice_end; | |
831 | y -= h; | |
832 | ||
833 | if (s->bitstream_bpp == 12) | |
834 | cy = y >> 1; | |
835 | else | |
836 | cy = y; | |
837 | ||
838 | offset[0] = frame->linesize[0] * y; | |
839 | offset[1] = frame->linesize[1] * cy; | |
840 | offset[2] = frame->linesize[2] * cy; | |
841 | for (i = 3; i < AV_NUM_DATA_POINTERS; i++) | |
842 | offset[i] = 0; | |
843 | emms_c(); | |
844 | ||
845 | s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h); | |
846 | ||
847 | s->last_slice_end = y + h; | |
848 | } | |
849 | ||
850 | static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc) | |
851 | { | |
852 | if (s->bps <= 8) { | |
853 | return s->hdsp.add_hfyu_left_pred(dst, src, w, acc); | |
854 | } else { | |
855 | return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc); | |
856 | } | |
857 | } | |
858 | ||
859 | static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w) | |
860 | { | |
861 | if (s->bps <= 8) { | |
862 | s->hdsp.add_bytes(dst, src, w); | |
863 | } else { | |
864 | s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w); | |
865 | } | |
866 | } | |
867 | ||
868 | static void add_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, const uint8_t *diff, int w, int *left, int *left_top) | |
869 | { | |
870 | if (s->bps <= 8) { | |
871 | s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top); | |
872 | } else { | |
873 | s->llviddsp.add_hfyu_median_pred_int16((uint16_t *)dst, (const uint16_t *)src, (const uint16_t *)diff, s->n-1, w, left, left_top); | |
874 | } | |
875 | } | |
876 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, | |
877 | AVPacket *avpkt) | |
878 | { | |
879 | const uint8_t *buf = avpkt->data; | |
880 | int buf_size = avpkt->size; | |
881 | HYuvContext *s = avctx->priv_data; | |
882 | const int width = s->width; | |
883 | const int width2 = s->width >> 1; | |
884 | const int height = s->height; | |
885 | int fake_ystride, fake_ustride, fake_vstride; | |
886 | ThreadFrame frame = { .f = data }; | |
887 | AVFrame *const p = data; | |
888 | int table_size = 0, ret; | |
889 | ||
890 | av_fast_padded_malloc(&s->bitstream_buffer, | |
891 | &s->bitstream_buffer_size, | |
892 | buf_size); | |
893 | if (!s->bitstream_buffer) | |
894 | return AVERROR(ENOMEM); | |
895 | ||
896 | s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer, | |
897 | (const uint32_t *) buf, buf_size / 4); | |
898 | ||
899 | if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) | |
900 | return ret; | |
901 | ||
902 | if (s->context) { | |
903 | table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size); | |
904 | if (table_size < 0) | |
905 | return table_size; | |
906 | } | |
907 | ||
908 | if ((unsigned) (buf_size - table_size) >= INT_MAX / 8) | |
909 | return AVERROR_INVALIDDATA; | |
910 | ||
911 | if ((ret = init_get_bits(&s->gb, s->bitstream_buffer + table_size, | |
912 | (buf_size - table_size) * 8)) < 0) | |
913 | return ret; | |
914 | ||
915 | fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0]; | |
916 | fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1]; | |
917 | fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2]; | |
918 | ||
919 | s->last_slice_end = 0; | |
920 | ||
921 | if (s->version > 2) { | |
922 | int plane; | |
923 | for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) { | |
924 | int left, lefttop, y; | |
925 | int w = width; | |
926 | int h = height; | |
927 | int fake_stride = fake_ystride; | |
928 | ||
929 | if (s->chroma && (plane == 1 || plane == 2)) { | |
930 | w >>= s->chroma_h_shift; | |
931 | h >>= s->chroma_v_shift; | |
932 | fake_stride = plane == 1 ? fake_ustride : fake_vstride; | |
933 | } | |
934 | ||
935 | switch (s->predictor) { | |
936 | case LEFT: | |
937 | case PLANE: | |
938 | decode_plane_bitstream(s, w, plane); | |
939 | left = left_prediction(s, p->data[plane], s->temp[0], w, 0); | |
940 | ||
941 | for (y = 1; y < h; y++) { | |
942 | uint8_t *dst = p->data[plane] + p->linesize[plane]*y; | |
943 | ||
944 | decode_plane_bitstream(s, w, plane); | |
945 | left = left_prediction(s, dst, s->temp[0], w, left); | |
946 | if (s->predictor == PLANE) { | |
947 | if (y > s->interlaced) { | |
948 | add_bytes(s, dst, dst - fake_stride, w); | |
949 | } | |
950 | } | |
951 | } | |
952 | ||
953 | break; | |
954 | case MEDIAN: | |
955 | decode_plane_bitstream(s, w, plane); | |
956 | left= left_prediction(s, p->data[plane], s->temp[0], w, 0); | |
957 | ||
958 | y = 1; | |
959 | ||
960 | /* second line is left predicted for interlaced case */ | |
961 | if (s->interlaced) { | |
962 | decode_plane_bitstream(s, w, plane); | |
963 | left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left); | |
964 | y++; | |
965 | } | |
966 | ||
967 | lefttop = p->data[plane][0]; | |
968 | decode_plane_bitstream(s, w, plane); | |
969 | add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop); | |
970 | y++; | |
971 | ||
972 | for (; y<h; y++) { | |
973 | uint8_t *dst; | |
974 | ||
975 | decode_plane_bitstream(s, w, plane); | |
976 | ||
977 | dst = p->data[plane] + p->linesize[plane] * y; | |
978 | ||
979 | add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop); | |
980 | } | |
981 | ||
982 | break; | |
983 | } | |
984 | } | |
985 | draw_slice(s, p, height); | |
986 | } else if (s->bitstream_bpp < 24) { | |
987 | int y, cy; | |
988 | int lefty, leftu, leftv; | |
989 | int lefttopy, lefttopu, lefttopv; | |
990 | ||
991 | if (s->yuy2) { | |
992 | p->data[0][3] = get_bits(&s->gb, 8); | |
993 | p->data[0][2] = get_bits(&s->gb, 8); | |
994 | p->data[0][1] = get_bits(&s->gb, 8); | |
995 | p->data[0][0] = get_bits(&s->gb, 8); | |
996 | ||
997 | av_log(avctx, AV_LOG_ERROR, | |
998 | "YUY2 output is not implemented yet\n"); | |
999 | return AVERROR_PATCHWELCOME; | |
1000 | } else { | |
1001 | leftv = | |
1002 | p->data[2][0] = get_bits(&s->gb, 8); | |
1003 | lefty = | |
1004 | p->data[0][1] = get_bits(&s->gb, 8); | |
1005 | leftu = | |
1006 | p->data[1][0] = get_bits(&s->gb, 8); | |
1007 | p->data[0][0] = get_bits(&s->gb, 8); | |
1008 | ||
1009 | switch (s->predictor) { | |
1010 | case LEFT: | |
1011 | case PLANE: | |
1012 | decode_422_bitstream(s, width - 2); | |
1013 | lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], | |
1014 | width - 2, lefty); | |
1015 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1016 | leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu); | |
1017 | leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv); | |
1018 | } | |
1019 | ||
1020 | for (cy = y = 1; y < s->height; y++, cy++) { | |
1021 | uint8_t *ydst, *udst, *vdst; | |
1022 | ||
1023 | if (s->bitstream_bpp == 12) { | |
1024 | decode_gray_bitstream(s, width); | |
1025 | ||
1026 | ydst = p->data[0] + p->linesize[0] * y; | |
1027 | ||
1028 | lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], | |
1029 | width, lefty); | |
1030 | if (s->predictor == PLANE) { | |
1031 | if (y > s->interlaced) | |
1032 | s->hdsp.add_bytes(ydst, ydst - fake_ystride, width); | |
1033 | } | |
1034 | y++; | |
1035 | if (y >= s->height) | |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | draw_slice(s, p, y); | |
1040 | ||
1041 | ydst = p->data[0] + p->linesize[0] * y; | |
1042 | udst = p->data[1] + p->linesize[1] * cy; | |
1043 | vdst = p->data[2] + p->linesize[2] * cy; | |
1044 | ||
1045 | decode_422_bitstream(s, width); | |
1046 | lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], | |
1047 | width, lefty); | |
1048 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1049 | leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu); | |
1050 | leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv); | |
1051 | } | |
1052 | if (s->predictor == PLANE) { | |
1053 | if (cy > s->interlaced) { | |
1054 | s->hdsp.add_bytes(ydst, ydst - fake_ystride, width); | |
1055 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1056 | s->hdsp.add_bytes(udst, udst - fake_ustride, width2); | |
1057 | s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2); | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | } | |
1062 | draw_slice(s, p, height); | |
1063 | ||
1064 | break; | |
1065 | case MEDIAN: | |
1066 | /* first line except first 2 pixels is left predicted */ | |
1067 | decode_422_bitstream(s, width - 2); | |
1068 | lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], | |
1069 | width - 2, lefty); | |
1070 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1071 | leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu); | |
1072 | leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv); | |
1073 | } | |
1074 | ||
1075 | cy = y = 1; | |
1076 | ||
1077 | /* second line is left predicted for interlaced case */ | |
1078 | if (s->interlaced) { | |
1079 | decode_422_bitstream(s, width); | |
1080 | lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0], | |
1081 | s->temp[0], width, lefty); | |
1082 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1083 | leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu); | |
1084 | leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv); | |
1085 | } | |
1086 | y++; | |
1087 | cy++; | |
1088 | } | |
1089 | ||
1090 | /* next 4 pixels are left predicted too */ | |
1091 | decode_422_bitstream(s, 4); | |
1092 | lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride, | |
1093 | s->temp[0], 4, lefty); | |
1094 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1095 | leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu); | |
1096 | leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv); | |
1097 | } | |
1098 | ||
1099 | /* next line except the first 4 pixels is median predicted */ | |
1100 | lefttopy = p->data[0][3]; | |
1101 | decode_422_bitstream(s, width - 4); | |
1102 | s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4, | |
1103 | p->data[0] + 4, s->temp[0], | |
1104 | width - 4, &lefty, &lefttopy); | |
1105 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1106 | lefttopu = p->data[1][1]; | |
1107 | lefttopv = p->data[2][1]; | |
1108 | s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu); | |
1109 | s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv); | |
1110 | } | |
1111 | y++; | |
1112 | cy++; | |
1113 | ||
1114 | for (; y < height; y++, cy++) { | |
1115 | uint8_t *ydst, *udst, *vdst; | |
1116 | ||
1117 | if (s->bitstream_bpp == 12) { | |
1118 | while (2 * cy > y) { | |
1119 | decode_gray_bitstream(s, width); | |
1120 | ydst = p->data[0] + p->linesize[0] * y; | |
1121 | s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, | |
1122 | s->temp[0], width, | |
1123 | &lefty, &lefttopy); | |
1124 | y++; | |
1125 | } | |
1126 | if (y >= height) | |
1127 | break; | |
1128 | } | |
1129 | draw_slice(s, p, y); | |
1130 | ||
1131 | decode_422_bitstream(s, width); | |
1132 | ||
1133 | ydst = p->data[0] + p->linesize[0] * y; | |
1134 | udst = p->data[1] + p->linesize[1] * cy; | |
1135 | vdst = p->data[2] + p->linesize[2] * cy; | |
1136 | ||
1137 | s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, | |
1138 | s->temp[0], width, | |
1139 | &lefty, &lefttopy); | |
1140 | if (!(s->flags & CODEC_FLAG_GRAY)) { | |
1141 | s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu); | |
1142 | s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv); | |
1143 | } | |
1144 | } | |
1145 | ||
1146 | draw_slice(s, p, height); | |
1147 | break; | |
1148 | } | |
1149 | } | |
1150 | } else { | |
1151 | int y; | |
1152 | uint8_t left[4]; | |
1153 | const int last_line = (height - 1) * p->linesize[0]; | |
1154 | ||
1155 | if (s->bitstream_bpp == 32) { | |
1156 | left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8); | |
1157 | left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8); | |
1158 | left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8); | |
1159 | left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8); | |
1160 | } else { | |
1161 | left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8); | |
1162 | left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8); | |
1163 | left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8); | |
1164 | left[A] = p->data[0][last_line + A] = 255; | |
1165 | skip_bits(&s->gb, 8); | |
1166 | } | |
1167 | ||
1168 | if (s->bgr32) { | |
1169 | switch (s->predictor) { | |
1170 | case LEFT: | |
1171 | case PLANE: | |
1172 | decode_bgr_bitstream(s, width - 1); | |
1173 | s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4, | |
1174 | s->temp[0], width - 1, left); | |
1175 | ||
1176 | for (y = s->height - 2; y >= 0; y--) { // Yes it is stored upside down. | |
1177 | decode_bgr_bitstream(s, width); | |
1178 | ||
1179 | s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y, | |
1180 | s->temp[0], width, left); | |
1181 | if (s->predictor == PLANE) { | |
1182 | if (s->bitstream_bpp != 32) | |
1183 | left[A] = 0; | |
1184 | if ((y & s->interlaced) == 0 && | |
1185 | y < s->height - 1 - s->interlaced) { | |
1186 | s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y, | |
1187 | p->data[0] + p->linesize[0] * y + | |
1188 | fake_ystride, fake_ystride); | |
1189 | } | |
1190 | } | |
1191 | } | |
1192 | // just 1 large slice as this is not possible in reverse order | |
1193 | draw_slice(s, p, height); | |
1194 | break; | |
1195 | default: | |
1196 | av_log(avctx, AV_LOG_ERROR, | |
1197 | "prediction type not supported!\n"); | |
1198 | } | |
1199 | } else { | |
1200 | av_log(avctx, AV_LOG_ERROR, | |
1201 | "BGR24 output is not implemented yet\n"); | |
1202 | return AVERROR_PATCHWELCOME; | |
1203 | } | |
1204 | } | |
1205 | emms_c(); | |
1206 | ||
1207 | *got_frame = 1; | |
1208 | ||
1209 | return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size; | |
1210 | } | |
1211 | ||
1212 | static av_cold int decode_end(AVCodecContext *avctx) | |
1213 | { | |
1214 | HYuvContext *s = avctx->priv_data; | |
1215 | int i; | |
1216 | ||
1217 | ff_huffyuv_common_end(s); | |
1218 | av_freep(&s->bitstream_buffer); | |
1219 | ||
1220 | for (i = 0; i < 8; i++) | |
1221 | ff_free_vlc(&s->vlc[i]); | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | AVCodec ff_huffyuv_decoder = { | |
1227 | .name = "huffyuv", | |
1228 | .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"), | |
1229 | .type = AVMEDIA_TYPE_VIDEO, | |
1230 | .id = AV_CODEC_ID_HUFFYUV, | |
1231 | .priv_data_size = sizeof(HYuvContext), | |
1232 | .init = decode_init, | |
1233 | .close = decode_end, | |
1234 | .decode = decode_frame, | |
1235 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | | |
1236 | CODEC_CAP_FRAME_THREADS, | |
1237 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), | |
1238 | }; | |
1239 | ||
1240 | #if CONFIG_FFVHUFF_DECODER | |
1241 | AVCodec ff_ffvhuff_decoder = { | |
1242 | .name = "ffvhuff", | |
1243 | .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"), | |
1244 | .type = AVMEDIA_TYPE_VIDEO, | |
1245 | .id = AV_CODEC_ID_FFVHUFF, | |
1246 | .priv_data_size = sizeof(HYuvContext), | |
1247 | .init = decode_init, | |
1248 | .close = decode_end, | |
1249 | .decode = decode_frame, | |
1250 | .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND | | |
1251 | CODEC_CAP_FRAME_THREADS, | |
1252 | .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), | |
1253 | }; | |
1254 | #endif /* CONFIG_FFVHUFF_DECODER */ |