4 * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
6 * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
9 * This file is part of FFmpeg.
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.
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.
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
25 * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA
36 #include "huffyuvdsp.h"
38 #include "libavutil/pixdesc.h"
40 #define classic_shift_luma_table_size 42
41 static const unsigned char classic_shift_luma[classic_shift_luma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
42 34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
43 16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
48 #define classic_shift_chroma_table_size 59
49 static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
50 66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
51 56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
52 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0,
56 static const unsigned char classic_add_luma[256] = {
57 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
58 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
59 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
60 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
61 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
62 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
63 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
64 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
65 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
66 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
67 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
68 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
69 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
70 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
71 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
72 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
75 static const unsigned char classic_add_chroma[256] = {
76 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
77 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
78 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
79 43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
80 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
81 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
82 17, 14, 5, 6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
83 112,113,114,115, 4,117,118, 92, 94,121,122, 3,124,103, 2, 1,
84 0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
85 135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
86 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
87 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
88 7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
89 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
90 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
91 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
94 static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
99 repeat = get_bits(gb, 3);
100 val = get_bits(gb, 5);
102 repeat = get_bits(gb, 8);
103 if (i + repeat > n || get_bits_left(gb) < 0) {
104 av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
113 static int generate_joint_tables(HYuvContext *s)
115 uint16_t symbols[1 << VLC_BITS];
116 uint16_t bits[1 << VLC_BITS];
117 uint8_t len[1 << VLC_BITS];
120 if (s->bitstream_bpp < 24 || s->version > 2) {
122 for (p = 0; p < 4; p++) {
123 int p0 = s->version > 2 ? p : 0;
124 for (i = y = 0; y < s->vlc_n; y++) {
125 int len0 = s->len[p0][y];
126 int limit = VLC_BITS - len0;
127 if(limit <= 0 || !len0)
129 if((sign_extend(y, 8) & (s->vlc_n-1)) != y)
131 for (u = 0; u < s->vlc_n; u++) {
132 int len1 = s->len[p][u];
133 if (len1 > limit || !len1)
135 if((sign_extend(u, 8) & (s->vlc_n-1)) != u)
137 av_assert0(i < (1 << VLC_BITS));
138 len[i] = len0 + len1;
139 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
140 symbols[i] = (y << 8) + (u & 0xFF);
141 if(symbols[i] != 0xffff) // reserved to mean "invalid"
145 ff_free_vlc(&s->vlc[4 + p]);
146 if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
147 bits, 2, 2, symbols, 2, 2, 0)) < 0)
151 uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
152 int i, b, g, r, code;
153 int p0 = s->decorrelate;
154 int p1 = !s->decorrelate;
155 // restrict the range to +/-16 because that's pretty much guaranteed to
156 // cover all the combinations that fit in 11 bits total, and it doesn't
157 // matter if we miss a few rare codes.
158 for (i = 0, g = -16; g < 16; g++) {
159 int len0 = s->len[p0][g & 255];
160 int limit0 = VLC_BITS - len0;
161 if (limit0 < 2 || !len0)
163 for (b = -16; b < 16; b++) {
164 int len1 = s->len[p1][b & 255];
165 int limit1 = limit0 - len1;
166 if (limit1 < 1 || !len1)
168 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
169 for (r = -16; r < 16; r++) {
170 int len2 = s->len[2][r & 255];
171 if (len2 > limit1 || !len2)
173 av_assert0(i < (1 << VLC_BITS));
174 len[i] = len0 + len1 + len2;
175 bits[i] = (code << len2) + s->bits[2][r & 255];
176 if (s->decorrelate) {
189 ff_free_vlc(&s->vlc[4]);
190 if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0)) < 0)
196 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
203 init_get_bits(&gb, src, length * 8);
206 count = 1 + s->alpha + 2*s->chroma;
208 for (i = 0; i < count; i++) {
209 if (read_len_table(s->len[i], &gb, s->vlc_n) < 0)
211 if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n) < 0) {
214 ff_free_vlc(&s->vlc[i]);
215 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
216 s->bits[i], 4, 4, 0)) < 0)
220 if ((ret = generate_joint_tables(s)) < 0)
223 return (get_bits_count(&gb) + 7) / 8;
226 static int read_old_huffman_tables(HYuvContext *s)
232 init_get_bits(&gb, classic_shift_luma,
233 classic_shift_luma_table_size * 8);
234 if (read_len_table(s->len[0], &gb, 256) < 0)
237 init_get_bits(&gb, classic_shift_chroma,
238 classic_shift_chroma_table_size * 8);
239 if (read_len_table(s->len[1], &gb, 256) < 0)
242 for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
243 for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
245 if (s->bitstream_bpp >= 24) {
246 memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
247 memcpy(s->len[1] , s->len [0], 256 * sizeof(uint8_t));
249 memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
250 memcpy(s->len[2] , s->len [1], 256 * sizeof(uint8_t));
252 for (i = 0; i < 4; i++) {
253 ff_free_vlc(&s->vlc[i]);
254 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
255 s->bits[i], 4, 4, 0)) < 0)
259 if ((ret = generate_joint_tables(s)) < 0)
265 static av_cold int decode_init(AVCodecContext *avctx)
267 HYuvContext *s = avctx->priv_data;
269 ff_huffyuvdsp_init(&s->hdsp);
270 memset(s->vlc, 0, 4 * sizeof(VLC));
272 s->interlaced = avctx->height > 288;
276 if (avctx->extradata_size) {
277 if ((avctx->bits_per_coded_sample & 7) &&
278 avctx->bits_per_coded_sample != 12)
279 s->version = 1; // do such files exist at all?
280 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
289 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
291 if (s->version >= 2) {
292 int method, interlace;
294 if (avctx->extradata_size < 4)
297 method = ((uint8_t*)avctx->extradata)[0];
298 s->decorrelate = method & 64 ? 1 : 0;
299 s->predictor = method & 63;
300 if (s->version == 2) {
301 s->bitstream_bpp = ((uint8_t*)avctx->extradata)[1];
302 if (s->bitstream_bpp == 0)
303 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
305 s->bps = (avctx->extradata[1] >> 4) + 1;
307 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
308 s->chroma_h_shift = avctx->extradata[1] & 3;
309 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
310 s->yuv = !!(((uint8_t*)avctx->extradata)[2] & 1);
311 s->chroma= !!(((uint8_t*)avctx->extradata)[2] & 3);
312 s->alpha = !!(((uint8_t*)avctx->extradata)[2] & 4);
314 interlace = (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
315 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
316 s->context = ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
318 if ( read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
319 avctx->extradata_size - 4) < 0)
320 return AVERROR_INVALIDDATA;
322 switch (avctx->bits_per_coded_sample & 7) {
332 s->predictor = PLANE;
333 s->decorrelate = avctx->bits_per_coded_sample >= 24;
336 s->predictor = MEDIAN;
340 s->predictor = LEFT; //OLD
344 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
347 if (read_old_huffman_tables(s) < 0)
348 return AVERROR_INVALIDDATA;
351 if (s->version <= 2) {
352 switch (s->bitstream_bpp) {
354 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
359 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
361 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
367 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
369 avctx->pix_fmt = AV_PIX_FMT_BGR24;
373 av_assert0(s->bgr32);
374 avctx->pix_fmt = AV_PIX_FMT_RGB32;
378 return AVERROR_INVALIDDATA;
380 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
384 switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) {
386 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
389 avctx->pix_fmt = AV_PIX_FMT_GRAY16;
392 avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
395 avctx->pix_fmt = AV_PIX_FMT_GBRP;
398 avctx->pix_fmt = AV_PIX_FMT_GBRP9;
401 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
404 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
407 avctx->pix_fmt = AV_PIX_FMT_GBRP14;
410 avctx->pix_fmt = AV_PIX_FMT_GBRP16;
413 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
416 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
419 avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
422 avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
425 avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
428 avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
431 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
434 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
437 avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
440 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
443 avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
446 avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
449 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
452 avctx->pix_fmt = AV_PIX_FMT_YUV411P;
455 avctx->pix_fmt = AV_PIX_FMT_YUV440P;
458 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
461 avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
464 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
467 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
470 avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
473 avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
476 avctx->pix_fmt = AV_PIX_FMT_YUV410P;
479 avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
482 avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
485 avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
488 avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
491 avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
494 avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
497 avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
500 avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
503 avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
506 avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
509 avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
512 avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
515 return AVERROR_INVALIDDATA;
519 ff_huffyuv_common_init(avctx);
521 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
522 av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
523 return AVERROR_INVALIDDATA;
525 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P && avctx->width%4) {
526 av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 this colorspace and predictor\n");
527 return AVERROR_INVALIDDATA;
529 if (ff_huffyuv_alloc_temp(s)) {
530 ff_huffyuv_common_end(s);
531 return AVERROR(ENOMEM);
537 static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
539 HYuvContext *s = avctx->priv_data;
542 if (ff_huffyuv_alloc_temp(s)) {
543 ff_huffyuv_common_end(s);
544 return AVERROR(ENOMEM);
547 for (i = 0; i < 8; i++)
548 s->vlc[i].table = NULL;
550 if (s->version >= 2) {
551 if (read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
552 avctx->extradata_size) < 0)
553 return AVERROR_INVALIDDATA;
555 if (read_old_huffman_tables(s) < 0)
556 return AVERROR_INVALIDDATA;
562 /** Subset of GET_VLC for use in hand-roller VLC code */
563 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
564 code = table[index][0]; \
565 n = table[index][1]; \
566 if (max_depth > 1 && n < 0) { \
567 LAST_SKIP_BITS(name, gb, bits); \
568 UPDATE_CACHE(name, gb); \
571 index = SHOW_UBITS(name, gb, nb_bits) + code; \
572 code = table[index][0]; \
573 n = table[index][1]; \
574 if (max_depth > 2 && n < 0) { \
575 LAST_SKIP_BITS(name, gb, nb_bits); \
576 UPDATE_CACHE(name, gb); \
579 index = SHOW_UBITS(name, gb, nb_bits) + code; \
580 code = table[index][0]; \
581 n = table[index][1]; \
585 LAST_SKIP_BITS(name, gb, n)
588 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
589 bits, max_depth, OP) \
591 unsigned int index = SHOW_UBITS(name, gb, bits); \
592 int code, n = dtable[index][1]; \
595 code = dtable[index][0]; \
596 OP(dst0, dst1, code); \
597 LAST_SKIP_BITS(name, gb, n); \
600 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
602 UPDATE_CACHE(re, gb); \
603 index = SHOW_UBITS(name, gb, bits); \
604 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
608 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
610 #define READ_2PIX(dst0, dst1, plane1)\
611 UPDATE_CACHE(re, &s->gb); \
612 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
613 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
615 static void decode_422_bitstream(HYuvContext *s, int count)
618 OPEN_READER(re, &s->gb);
621 if (count >= (get_bits_left(&s->gb)) / (31 * 4)) {
622 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
623 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
624 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
626 for (; i < count; i++)
627 s->temp[0][2 * i ] = s->temp[1][i] =
628 s->temp[0][2 * i + 1] = s->temp[2][i] = 128;
630 for (i = 0; i < count; i++) {
631 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
632 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
635 CLOSE_READER(re, &s->gb);
638 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
639 UPDATE_CACHE(re, &s->gb); \
640 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
641 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
643 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
645 /* TODO instead of restarting the read when the code isn't in the first level
646 * of the joint table, jump into the 2nd level of the individual table. */
647 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
648 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
649 dst0 += get_bits(&s->gb, 2);\
650 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
651 dst1 += get_bits(&s->gb, 2);\
653 static void decode_plane_bitstream(HYuvContext *s, int count, int plane)
660 OPEN_READER(re, &s->gb);
661 if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
662 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
663 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
666 for(i=0; i<count; i++){
667 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
670 CLOSE_READER(re, &s->gb);
671 } else if (s->bps <= 14) {
672 OPEN_READER(re, &s->gb);
673 if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
674 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
675 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
678 for(i=0; i<count; i++){
679 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
682 CLOSE_READER(re, &s->gb);
684 if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
685 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
686 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
689 for(i=0; i<count; i++){
690 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
696 static void decode_gray_bitstream(HYuvContext *s, int count)
699 OPEN_READER(re, &s->gb);
702 if (count >= (get_bits_left(&s->gb)) / (31 * 2)) {
703 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
704 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
707 for(i=0; i<count; i++){
708 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
711 CLOSE_READER(re, &s->gb);
714 static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
715 int decorrelate, int alpha)
718 OPEN_READER(re, &s->gb);
720 for (i = 0; i < count; i++) {
724 UPDATE_CACHE(re, &s->gb);
725 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
726 n = s->vlc[4].table[index][1];
729 code = s->vlc[4].table[index][0];
730 *(uint32_t*)&s->temp[0][4 * i] = s->pix_bgr_map[code];
731 LAST_SKIP_BITS(re, &s->gb, n);
735 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
736 &s->gb, re, VLC_BITS, 3);
738 UPDATE_CACHE(re, &s->gb);
739 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
740 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
741 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
743 UPDATE_CACHE(re, &s->gb);
744 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
745 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
746 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
748 VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
749 &s->gb, re, VLC_BITS, 3);
751 UPDATE_CACHE(re, &s->gb);
752 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
753 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
754 &s->gb, re, VLC_BITS, 3);
756 UPDATE_CACHE(re, &s->gb);
757 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
758 VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
759 &s->gb, re, VLC_BITS, 3);
762 UPDATE_CACHE(re, &s->gb);
763 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
764 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
765 &s->gb, re, VLC_BITS, 3);
769 CLOSE_READER(re, &s->gb);
772 static void decode_bgr_bitstream(HYuvContext *s, int count)
774 if (s->decorrelate) {
775 if (s->bitstream_bpp==24)
776 decode_bgr_1(s, count, 1, 0);
778 decode_bgr_1(s, count, 1, 1);
780 if (s->bitstream_bpp==24)
781 decode_bgr_1(s, count, 0, 0);
783 decode_bgr_1(s, count, 0, 1);
787 static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
790 int offset[AV_NUM_DATA_POINTERS];
792 if (s->avctx->draw_horiz_band==NULL)
795 h = y - s->last_slice_end;
798 if (s->bitstream_bpp == 12) {
804 offset[0] = frame->linesize[0] * y;
805 offset[1] = frame->linesize[1] * cy;
806 offset[2] = frame->linesize[2] * cy;
807 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
811 s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
813 s->last_slice_end = y + h;
816 static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
819 return s->hdsp.add_hfyu_left_pred(dst, src, w, acc);
821 return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
825 static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
828 s->hdsp.add_bytes(dst, src, w);
830 s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
834 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)
837 s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top);
839 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);
842 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
845 const uint8_t *buf = avpkt->data;
846 int buf_size = avpkt->size;
847 HYuvContext *s = avctx->priv_data;
848 const int width = s->width;
849 const int width2 = s->width>>1;
850 const int height = s->height;
851 int fake_ystride, fake_ustride, fake_vstride;
852 ThreadFrame frame = { .f = data };
853 AVFrame * const p = data;
854 int table_size = 0, ret;
856 av_fast_padded_malloc(&s->bitstream_buffer,
857 &s->bitstream_buffer_size,
859 if (!s->bitstream_buffer)
860 return AVERROR(ENOMEM);
862 s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer,
863 (const uint32_t*)buf, buf_size / 4);
865 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
869 table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
871 return AVERROR_INVALIDDATA;
874 if ((unsigned)(buf_size-table_size) >= INT_MAX / 8)
875 return AVERROR_INVALIDDATA;
877 init_get_bits(&s->gb, s->bitstream_buffer+table_size,
878 (buf_size-table_size) * 8);
880 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
881 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
882 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
884 s->last_slice_end = 0;
886 if (s->version > 2) {
888 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
889 int left, lefttop, y;
892 int fake_stride = fake_ystride;
894 if (s->chroma && (plane == 1 || plane == 2)) {
895 w >>= s->chroma_h_shift;
896 h >>= s->chroma_v_shift;
897 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
900 switch (s->predictor) {
903 decode_plane_bitstream(s, w, plane);
904 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
906 for (y = 1; y < h; y++) {
907 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
909 decode_plane_bitstream(s, w, plane);
910 left = left_prediction(s, dst, s->temp[0], w, left);
911 if (s->predictor == PLANE) {
912 if (y > s->interlaced) {
913 add_bytes(s, dst, dst - fake_stride, w);
920 decode_plane_bitstream(s, w, plane);
921 left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
925 /* second line is left predicted for interlaced case */
927 decode_plane_bitstream(s, w, plane);
928 left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
932 lefttop = p->data[plane][0];
933 decode_plane_bitstream(s, w, plane);
934 add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
940 decode_plane_bitstream(s, w, plane);
942 dst = p->data[plane] + p->linesize[plane] * y;
944 add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
950 draw_slice(s, p, height);
951 } else if (s->bitstream_bpp < 24) {
953 int lefty, leftu, leftv;
954 int lefttopy, lefttopu, lefttopv;
957 p->data[0][3] = get_bits(&s->gb, 8);
958 p->data[0][2] = get_bits(&s->gb, 8);
959 p->data[0][1] = get_bits(&s->gb, 8);
960 p->data[0][0] = get_bits(&s->gb, 8);
962 av_log(avctx, AV_LOG_ERROR,
963 "YUY2 output is not implemented yet\n");
964 return AVERROR_PATCHWELCOME;
967 leftv = p->data[2][0] = get_bits(&s->gb, 8);
968 lefty = p->data[0][1] = get_bits(&s->gb, 8);
969 leftu = p->data[1][0] = get_bits(&s->gb, 8);
970 p->data[0][0] = get_bits(&s->gb, 8);
972 switch (s->predictor) {
975 decode_422_bitstream(s, width-2);
976 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
977 if (!(s->flags&CODEC_FLAG_GRAY)) {
978 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
979 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
982 for (cy = y = 1; y < s->height; y++, cy++) {
983 uint8_t *ydst, *udst, *vdst;
985 if (s->bitstream_bpp == 12) {
986 decode_gray_bitstream(s, width);
988 ydst = p->data[0] + p->linesize[0] * y;
990 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
991 if (s->predictor == PLANE) {
992 if (y > s->interlaced)
993 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
996 if (y >= s->height) break;
1001 ydst = p->data[0] + p->linesize[0]*y;
1002 udst = p->data[1] + p->linesize[1]*cy;
1003 vdst = p->data[2] + p->linesize[2]*cy;
1005 decode_422_bitstream(s, width);
1006 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
1007 if (!(s->flags & CODEC_FLAG_GRAY)) {
1008 leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu);
1009 leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv);
1011 if (s->predictor == PLANE) {
1012 if (cy > s->interlaced) {
1013 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1014 if (!(s->flags & CODEC_FLAG_GRAY)) {
1015 s->hdsp.add_bytes(udst, udst - fake_ustride, width2);
1016 s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2);
1021 draw_slice(s, p, height);
1025 /* first line except first 2 pixels is left predicted */
1026 decode_422_bitstream(s, width - 2);
1027 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
1028 if (!(s->flags & CODEC_FLAG_GRAY)) {
1029 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1030 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1035 /* second line is left predicted for interlaced case */
1036 if (s->interlaced) {
1037 decode_422_bitstream(s, width);
1038 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
1039 if (!(s->flags & CODEC_FLAG_GRAY)) {
1040 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1041 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1046 /* next 4 pixels are left predicted too */
1047 decode_422_bitstream(s, 4);
1048 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
1049 if (!(s->flags&CODEC_FLAG_GRAY)) {
1050 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1051 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1054 /* next line except the first 4 pixels is median predicted */
1055 lefttopy = p->data[0][3];
1056 decode_422_bitstream(s, width - 4);
1057 s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4, p->data[0] + 4, s->temp[0], width - 4, &lefty, &lefttopy);
1058 if (!(s->flags&CODEC_FLAG_GRAY)) {
1059 lefttopu = p->data[1][1];
1060 lefttopv = p->data[2][1];
1061 s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1062 s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1066 for (; y<height; y++, cy++) {
1067 uint8_t *ydst, *udst, *vdst;
1069 if (s->bitstream_bpp == 12) {
1070 while (2 * cy > y) {
1071 decode_gray_bitstream(s, width);
1072 ydst = p->data[0] + p->linesize[0] * y;
1073 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1076 if (y >= height) break;
1078 draw_slice(s, p, y);
1080 decode_422_bitstream(s, width);
1082 ydst = p->data[0] + p->linesize[0] * y;
1083 udst = p->data[1] + p->linesize[1] * cy;
1084 vdst = p->data[2] + p->linesize[2] * cy;
1086 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1087 if (!(s->flags & CODEC_FLAG_GRAY)) {
1088 s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1089 s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1093 draw_slice(s, p, height);
1100 const int last_line = (height - 1) * p->linesize[0];
1102 if (s->bitstream_bpp == 32) {
1103 left[A] = p->data[0][last_line+A] = get_bits(&s->gb, 8);
1104 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1105 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1106 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1108 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1109 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1110 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1111 left[A] = p->data[0][last_line+A] = 255;
1112 skip_bits(&s->gb, 8);
1116 switch (s->predictor) {
1119 decode_bgr_bitstream(s, width - 1);
1120 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4, s->temp[0], width - 1, left);
1122 for (y = s->height - 2; y >= 0; y--) { //Yes it is stored upside down.
1123 decode_bgr_bitstream(s, width);
1125 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y, s->temp[0], width, left);
1126 if (s->predictor == PLANE) {
1127 if (s->bitstream_bpp != 32) left[A] = 0;
1128 if ((y & s->interlaced) == 0 &&
1129 y < s->height - 1 - s->interlaced) {
1130 s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y,
1131 p->data[0] + p->linesize[0] * y +
1132 fake_ystride, fake_ystride);
1136 // just 1 large slice as this is not possible in reverse order
1137 draw_slice(s, p, height);
1140 av_log(avctx, AV_LOG_ERROR,
1141 "prediction type not supported!\n");
1144 av_log(avctx, AV_LOG_ERROR,
1145 "BGR24 output is not implemented yet\n");
1146 return AVERROR_PATCHWELCOME;
1153 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1156 static av_cold int decode_end(AVCodecContext *avctx)
1158 HYuvContext *s = avctx->priv_data;
1161 ff_huffyuv_common_end(s);
1162 av_freep(&s->bitstream_buffer);
1164 for (i = 0; i < 8; i++) {
1165 ff_free_vlc(&s->vlc[i]);
1171 AVCodec ff_huffyuv_decoder = {
1173 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1174 .type = AVMEDIA_TYPE_VIDEO,
1175 .id = AV_CODEC_ID_HUFFYUV,
1176 .priv_data_size = sizeof(HYuvContext),
1177 .init = decode_init,
1178 .close = decode_end,
1179 .decode = decode_frame,
1180 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1181 CODEC_CAP_FRAME_THREADS,
1182 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1185 #if CONFIG_FFVHUFF_DECODER
1186 AVCodec ff_ffvhuff_decoder = {
1188 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1189 .type = AVMEDIA_TYPE_VIDEO,
1190 .id = AV_CODEC_ID_FFVHUFF,
1191 .priv_data_size = sizeof(HYuvContext),
1192 .init = decode_init,
1193 .close = decode_end,
1194 .decode = decode_frame,
1195 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1196 CODEC_CAP_FRAME_THREADS,
1197 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),