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);
144 ff_free_vlc(&s->vlc[4 + p]);
145 if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
146 bits, 2, 2, symbols, 2, 2, 0)) < 0)
150 uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
151 int i, b, g, r, code;
152 int p0 = s->decorrelate;
153 int p1 = !s->decorrelate;
154 // restrict the range to +/-16 because that's pretty much guaranteed to
155 // cover all the combinations that fit in 11 bits total, and it doesn't
156 // matter if we miss a few rare codes.
157 for (i = 0, g = -16; g < 16; g++) {
158 int len0 = s->len[p0][g & 255];
159 int limit0 = VLC_BITS - len0;
160 if (limit0 < 2 || !len0)
162 for (b = -16; b < 16; b++) {
163 int len1 = s->len[p1][b & 255];
164 int limit1 = limit0 - len1;
165 if (limit1 < 1 || !len1)
167 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
168 for (r = -16; r < 16; r++) {
169 int len2 = s->len[2][r & 255];
170 if (len2 > limit1 || !len2)
172 av_assert0(i < (1 << VLC_BITS));
173 len[i] = len0 + len1 + len2;
174 bits[i] = (code << len2) + s->bits[2][r & 255];
175 if (s->decorrelate) {
188 ff_free_vlc(&s->vlc[4]);
189 if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0)) < 0)
195 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
202 init_get_bits(&gb, src, length * 8);
205 count = 1 + s->alpha + 2*s->chroma;
207 for (i = 0; i < count; i++) {
208 if (read_len_table(s->len[i], &gb, s->vlc_n) < 0)
210 if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n) < 0) {
213 ff_free_vlc(&s->vlc[i]);
214 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
215 s->bits[i], 4, 4, 0)) < 0)
219 if ((ret = generate_joint_tables(s)) < 0)
222 return (get_bits_count(&gb) + 7) / 8;
225 static int read_old_huffman_tables(HYuvContext *s)
231 init_get_bits(&gb, classic_shift_luma,
232 classic_shift_luma_table_size * 8);
233 if (read_len_table(s->len[0], &gb, 256) < 0)
236 init_get_bits(&gb, classic_shift_chroma,
237 classic_shift_chroma_table_size * 8);
238 if (read_len_table(s->len[1], &gb, 256) < 0)
241 for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
242 for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
244 if (s->bitstream_bpp >= 24) {
245 memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
246 memcpy(s->len[1] , s->len [0], 256 * sizeof(uint8_t));
248 memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
249 memcpy(s->len[2] , s->len [1], 256 * sizeof(uint8_t));
251 for (i = 0; i < 4; i++) {
252 ff_free_vlc(&s->vlc[i]);
253 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
254 s->bits[i], 4, 4, 0)) < 0)
258 if ((ret = generate_joint_tables(s)) < 0)
264 static av_cold int decode_init(AVCodecContext *avctx)
266 HYuvContext *s = avctx->priv_data;
268 ff_huffyuvdsp_init(&s->hdsp);
269 memset(s->vlc, 0, 4 * sizeof(VLC));
271 s->interlaced = avctx->height > 288;
275 if (avctx->extradata_size) {
276 if ((avctx->bits_per_coded_sample & 7) &&
277 avctx->bits_per_coded_sample != 12)
278 s->version = 1; // do such files exist at all?
279 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
288 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
290 if (s->version >= 2) {
291 int method, interlace;
293 if (avctx->extradata_size < 4)
296 method = ((uint8_t*)avctx->extradata)[0];
297 s->decorrelate = method & 64 ? 1 : 0;
298 s->predictor = method & 63;
299 if (s->version == 2) {
300 s->bitstream_bpp = ((uint8_t*)avctx->extradata)[1];
301 if (s->bitstream_bpp == 0)
302 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
304 s->bps = (avctx->extradata[1] >> 4) + 1;
306 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
307 s->chroma_h_shift = avctx->extradata[1] & 3;
308 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
309 s->yuv = !!(((uint8_t*)avctx->extradata)[2] & 1);
310 s->chroma= !!(((uint8_t*)avctx->extradata)[2] & 3);
311 s->alpha = !!(((uint8_t*)avctx->extradata)[2] & 4);
313 interlace = (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
314 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
315 s->context = ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
317 if ( read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
318 avctx->extradata_size - 4) < 0)
319 return AVERROR_INVALIDDATA;
321 switch (avctx->bits_per_coded_sample & 7) {
331 s->predictor = PLANE;
332 s->decorrelate = avctx->bits_per_coded_sample >= 24;
335 s->predictor = MEDIAN;
339 s->predictor = LEFT; //OLD
343 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
346 if (read_old_huffman_tables(s) < 0)
347 return AVERROR_INVALIDDATA;
350 if (s->version <= 2) {
351 switch (s->bitstream_bpp) {
353 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
358 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
360 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
366 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
368 avctx->pix_fmt = AV_PIX_FMT_BGR24;
372 av_assert0(s->bgr32);
373 avctx->pix_fmt = AV_PIX_FMT_RGB32;
377 return AVERROR_INVALIDDATA;
379 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
383 switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) {
385 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
388 avctx->pix_fmt = AV_PIX_FMT_GRAY16;
391 avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
394 avctx->pix_fmt = AV_PIX_FMT_GBRP;
397 avctx->pix_fmt = AV_PIX_FMT_GBRP9;
400 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
403 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
406 avctx->pix_fmt = AV_PIX_FMT_GBRP14;
409 avctx->pix_fmt = AV_PIX_FMT_GBRP16;
412 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
415 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
418 avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
421 avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
424 avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
427 avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
430 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
433 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
436 avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
439 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
442 avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
445 avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
448 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
451 avctx->pix_fmt = AV_PIX_FMT_YUV411P;
454 avctx->pix_fmt = AV_PIX_FMT_YUV440P;
457 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
460 avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
463 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
466 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
469 avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
472 avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
475 avctx->pix_fmt = AV_PIX_FMT_YUV410P;
478 avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
481 avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
484 avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
487 avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
490 avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
493 avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
496 avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
499 avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
502 avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
505 avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
508 avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
511 avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
514 return AVERROR_INVALIDDATA;
518 ff_huffyuv_common_init(avctx);
520 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
521 av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
522 return AVERROR_INVALIDDATA;
524 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P && avctx->width%4) {
525 av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 this colorspace and predictor\n");
526 return AVERROR_INVALIDDATA;
528 if (ff_huffyuv_alloc_temp(s)) {
529 ff_huffyuv_common_end(s);
530 return AVERROR(ENOMEM);
536 static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
538 HYuvContext *s = avctx->priv_data;
541 if (ff_huffyuv_alloc_temp(s)) {
542 ff_huffyuv_common_end(s);
543 return AVERROR(ENOMEM);
546 for (i = 0; i < 8; i++)
547 s->vlc[i].table = NULL;
549 if (s->version >= 2) {
550 if (read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
551 avctx->extradata_size) < 0)
552 return AVERROR_INVALIDDATA;
554 if (read_old_huffman_tables(s) < 0)
555 return AVERROR_INVALIDDATA;
561 /** Subset of GET_VLC for use in hand-roller VLC code */
562 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
563 code = table[index][0]; \
564 n = table[index][1]; \
565 if (max_depth > 1 && n < 0) { \
566 LAST_SKIP_BITS(name, gb, bits); \
567 UPDATE_CACHE(name, gb); \
570 index = SHOW_UBITS(name, gb, nb_bits) + code; \
571 code = table[index][0]; \
572 n = table[index][1]; \
573 if (max_depth > 2 && n < 0) { \
574 LAST_SKIP_BITS(name, gb, nb_bits); \
575 UPDATE_CACHE(name, gb); \
578 index = SHOW_UBITS(name, gb, nb_bits) + code; \
579 code = table[index][0]; \
580 n = table[index][1]; \
584 LAST_SKIP_BITS(name, gb, n)
587 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
588 bits, max_depth, OP) \
590 unsigned int index = SHOW_UBITS(name, gb, bits); \
591 int code, n = dtable[index][1]; \
595 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
597 UPDATE_CACHE(re, gb); \
598 index = SHOW_UBITS(name, gb, bits); \
599 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
601 code = dtable[index][0]; \
602 OP(dst0, dst1, code); \
603 LAST_SKIP_BITS(name, gb, n); \
607 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
609 #define READ_2PIX(dst0, dst1, plane1)\
610 UPDATE_CACHE(re, &s->gb); \
611 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
612 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
614 static void decode_422_bitstream(HYuvContext *s, int count)
617 OPEN_READER(re, &s->gb);
620 if (count >= (get_bits_left(&s->gb)) / (32 * 4)) {
621 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
622 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
623 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
625 for (; i < count; i++)
626 s->temp[0][2 * i ] = s->temp[1][i] =
627 s->temp[0][2 * i + 1] = s->temp[2][i] = 128;
629 for (i = 0; i < count; i++) {
630 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
631 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
634 CLOSE_READER(re, &s->gb);
637 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
638 UPDATE_CACHE(re, &s->gb); \
639 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
640 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
642 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
644 /* TODO instead of restarting the read when the code isn't in the first level
645 * of the joint table, jump into the 2nd level of the individual table. */
646 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
647 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
648 dst0 += get_bits(&s->gb, 2);\
649 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
650 dst1 += get_bits(&s->gb, 2);\
652 static void decode_plane_bitstream(HYuvContext *s, int count, int plane)
659 OPEN_READER(re, &s->gb);
660 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
661 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
662 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
665 for(i=0; i<count; i++){
666 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
669 CLOSE_READER(re, &s->gb);
670 } else if (s->bps <= 14) {
671 OPEN_READER(re, &s->gb);
672 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
673 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
674 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
677 for(i=0; i<count; i++){
678 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
681 CLOSE_READER(re, &s->gb);
683 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
684 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
685 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
688 for(i=0; i<count; i++){
689 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
695 static void decode_gray_bitstream(HYuvContext *s, int count)
698 OPEN_READER(re, &s->gb);
701 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
702 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
703 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
706 for(i=0; i<count; i++){
707 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
710 CLOSE_READER(re, &s->gb);
713 static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
714 int decorrelate, int alpha)
717 OPEN_READER(re, &s->gb);
719 for (i = 0; i < count; i++) {
723 UPDATE_CACHE(re, &s->gb);
724 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
725 n = s->vlc[4].table[index][1];
728 code = s->vlc[4].table[index][0];
729 *(uint32_t*)&s->temp[0][4 * i] = s->pix_bgr_map[code];
730 LAST_SKIP_BITS(re, &s->gb, n);
734 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
735 &s->gb, re, VLC_BITS, 3);
737 UPDATE_CACHE(re, &s->gb);
738 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
739 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
740 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
742 UPDATE_CACHE(re, &s->gb);
743 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
744 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
745 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
747 VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
748 &s->gb, re, VLC_BITS, 3);
750 UPDATE_CACHE(re, &s->gb);
751 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
752 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
753 &s->gb, re, VLC_BITS, 3);
755 UPDATE_CACHE(re, &s->gb);
756 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
757 VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
758 &s->gb, re, VLC_BITS, 3);
761 UPDATE_CACHE(re, &s->gb);
762 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
763 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
764 &s->gb, re, VLC_BITS, 3);
768 CLOSE_READER(re, &s->gb);
771 static void decode_bgr_bitstream(HYuvContext *s, int count)
773 if (s->decorrelate) {
774 if (s->bitstream_bpp==24)
775 decode_bgr_1(s, count, 1, 0);
777 decode_bgr_1(s, count, 1, 1);
779 if (s->bitstream_bpp==24)
780 decode_bgr_1(s, count, 0, 0);
782 decode_bgr_1(s, count, 0, 1);
786 static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
789 int offset[AV_NUM_DATA_POINTERS];
791 if (s->avctx->draw_horiz_band==NULL)
794 h = y - s->last_slice_end;
797 if (s->bitstream_bpp == 12) {
803 offset[0] = frame->linesize[0] * y;
804 offset[1] = frame->linesize[1] * cy;
805 offset[2] = frame->linesize[2] * cy;
806 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
810 s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
812 s->last_slice_end = y + h;
815 static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
818 return s->hdsp.add_hfyu_left_pred(dst, src, w, acc);
820 return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
824 static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
827 s->hdsp.add_bytes(dst, src, w);
829 s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
833 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)
836 s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top);
838 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);
841 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
844 const uint8_t *buf = avpkt->data;
845 int buf_size = avpkt->size;
846 HYuvContext *s = avctx->priv_data;
847 const int width = s->width;
848 const int width2 = s->width>>1;
849 const int height = s->height;
850 int fake_ystride, fake_ustride, fake_vstride;
851 ThreadFrame frame = { .f = data };
852 AVFrame * const p = data;
853 int table_size = 0, ret;
855 av_fast_padded_malloc(&s->bitstream_buffer,
856 &s->bitstream_buffer_size,
858 if (!s->bitstream_buffer)
859 return AVERROR(ENOMEM);
861 s->dsp.bswap_buf((uint32_t*)s->bitstream_buffer,
862 (const uint32_t*)buf, buf_size / 4);
864 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
868 table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
870 return AVERROR_INVALIDDATA;
873 if ((unsigned)(buf_size-table_size) >= INT_MAX / 8)
874 return AVERROR_INVALIDDATA;
876 init_get_bits(&s->gb, s->bitstream_buffer+table_size,
877 (buf_size-table_size) * 8);
879 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
880 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
881 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
883 s->last_slice_end = 0;
885 if (s->version > 2) {
887 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
888 int left, lefttop, y;
891 int fake_stride = fake_ystride;
893 if (s->chroma && (plane == 1 || plane == 2)) {
894 w >>= s->chroma_h_shift;
895 h >>= s->chroma_v_shift;
896 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
899 switch (s->predictor) {
902 decode_plane_bitstream(s, w, plane);
903 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
905 for (y = 1; y < h; y++) {
906 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
908 decode_plane_bitstream(s, w, plane);
909 left = left_prediction(s, dst, s->temp[0], w, left);
910 if (s->predictor == PLANE) {
911 if (y > s->interlaced) {
912 add_bytes(s, dst, dst - fake_stride, w);
919 decode_plane_bitstream(s, w, plane);
920 left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
924 /* second line is left predicted for interlaced case */
926 decode_plane_bitstream(s, w, plane);
927 left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
931 lefttop = p->data[plane][0];
932 decode_plane_bitstream(s, w, plane);
933 add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
939 decode_plane_bitstream(s, w, plane);
941 dst = p->data[plane] + p->linesize[plane] * y;
943 add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
949 draw_slice(s, p, height);
950 } else if (s->bitstream_bpp < 24) {
952 int lefty, leftu, leftv;
953 int lefttopy, lefttopu, lefttopv;
956 p->data[0][3] = get_bits(&s->gb, 8);
957 p->data[0][2] = get_bits(&s->gb, 8);
958 p->data[0][1] = get_bits(&s->gb, 8);
959 p->data[0][0] = get_bits(&s->gb, 8);
961 av_log(avctx, AV_LOG_ERROR,
962 "YUY2 output is not implemented yet\n");
963 return AVERROR_PATCHWELCOME;
966 leftv = p->data[2][0] = get_bits(&s->gb, 8);
967 lefty = p->data[0][1] = get_bits(&s->gb, 8);
968 leftu = p->data[1][0] = get_bits(&s->gb, 8);
969 p->data[0][0] = get_bits(&s->gb, 8);
971 switch (s->predictor) {
974 decode_422_bitstream(s, width-2);
975 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
976 if (!(s->flags&CODEC_FLAG_GRAY)) {
977 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
978 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
981 for (cy = y = 1; y < s->height; y++, cy++) {
982 uint8_t *ydst, *udst, *vdst;
984 if (s->bitstream_bpp == 12) {
985 decode_gray_bitstream(s, width);
987 ydst = p->data[0] + p->linesize[0] * y;
989 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
990 if (s->predictor == PLANE) {
991 if (y > s->interlaced)
992 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
995 if (y >= s->height) break;
1000 ydst = p->data[0] + p->linesize[0]*y;
1001 udst = p->data[1] + p->linesize[1]*cy;
1002 vdst = p->data[2] + p->linesize[2]*cy;
1004 decode_422_bitstream(s, width);
1005 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
1006 if (!(s->flags & CODEC_FLAG_GRAY)) {
1007 leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu);
1008 leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv);
1010 if (s->predictor == PLANE) {
1011 if (cy > s->interlaced) {
1012 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1013 if (!(s->flags & CODEC_FLAG_GRAY)) {
1014 s->hdsp.add_bytes(udst, udst - fake_ustride, width2);
1015 s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2);
1020 draw_slice(s, p, height);
1024 /* first line except first 2 pixels is left predicted */
1025 decode_422_bitstream(s, width - 2);
1026 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
1027 if (!(s->flags & CODEC_FLAG_GRAY)) {
1028 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1029 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1034 /* second line is left predicted for interlaced case */
1035 if (s->interlaced) {
1036 decode_422_bitstream(s, width);
1037 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
1038 if (!(s->flags & CODEC_FLAG_GRAY)) {
1039 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1040 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1045 /* next 4 pixels are left predicted too */
1046 decode_422_bitstream(s, 4);
1047 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
1048 if (!(s->flags&CODEC_FLAG_GRAY)) {
1049 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1050 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1053 /* next line except the first 4 pixels is median predicted */
1054 lefttopy = p->data[0][3];
1055 decode_422_bitstream(s, width - 4);
1056 s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4, p->data[0] + 4, s->temp[0], width - 4, &lefty, &lefttopy);
1057 if (!(s->flags&CODEC_FLAG_GRAY)) {
1058 lefttopu = p->data[1][1];
1059 lefttopv = p->data[2][1];
1060 s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1061 s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1065 for (; y<height; y++, cy++) {
1066 uint8_t *ydst, *udst, *vdst;
1068 if (s->bitstream_bpp == 12) {
1069 while (2 * cy > y) {
1070 decode_gray_bitstream(s, width);
1071 ydst = p->data[0] + p->linesize[0] * y;
1072 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1075 if (y >= height) break;
1077 draw_slice(s, p, y);
1079 decode_422_bitstream(s, width);
1081 ydst = p->data[0] + p->linesize[0] * y;
1082 udst = p->data[1] + p->linesize[1] * cy;
1083 vdst = p->data[2] + p->linesize[2] * cy;
1085 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1086 if (!(s->flags & CODEC_FLAG_GRAY)) {
1087 s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1088 s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1092 draw_slice(s, p, height);
1099 const int last_line = (height - 1) * p->linesize[0];
1101 if (s->bitstream_bpp == 32) {
1102 left[A] = p->data[0][last_line+A] = get_bits(&s->gb, 8);
1103 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1104 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1105 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1107 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1108 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1109 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1110 left[A] = p->data[0][last_line+A] = 255;
1111 skip_bits(&s->gb, 8);
1115 switch (s->predictor) {
1118 decode_bgr_bitstream(s, width - 1);
1119 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4, s->temp[0], width - 1, left);
1121 for (y = s->height - 2; y >= 0; y--) { //Yes it is stored upside down.
1122 decode_bgr_bitstream(s, width);
1124 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y, s->temp[0], width, left);
1125 if (s->predictor == PLANE) {
1126 if (s->bitstream_bpp != 32) left[A] = 0;
1127 if ((y & s->interlaced) == 0 &&
1128 y < s->height - 1 - s->interlaced) {
1129 s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y,
1130 p->data[0] + p->linesize[0] * y +
1131 fake_ystride, fake_ystride);
1135 // just 1 large slice as this is not possible in reverse order
1136 draw_slice(s, p, height);
1139 av_log(avctx, AV_LOG_ERROR,
1140 "prediction type not supported!\n");
1143 av_log(avctx, AV_LOG_ERROR,
1144 "BGR24 output is not implemented yet\n");
1145 return AVERROR_PATCHWELCOME;
1152 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1155 static av_cold int decode_end(AVCodecContext *avctx)
1157 HYuvContext *s = avctx->priv_data;
1160 ff_huffyuv_common_end(s);
1161 av_freep(&s->bitstream_buffer);
1163 for (i = 0; i < 8; i++) {
1164 ff_free_vlc(&s->vlc[i]);
1170 AVCodec ff_huffyuv_decoder = {
1172 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1173 .type = AVMEDIA_TYPE_VIDEO,
1174 .id = AV_CODEC_ID_HUFFYUV,
1175 .priv_data_size = sizeof(HYuvContext),
1176 .init = decode_init,
1177 .close = decode_end,
1178 .decode = decode_frame,
1179 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1180 CODEC_CAP_FRAME_THREADS,
1181 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1184 #if CONFIG_FFVHUFF_DECODER
1185 AVCodec ff_ffvhuff_decoder = {
1187 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1188 .type = AVMEDIA_TYPE_VIDEO,
1189 .id = AV_CODEC_ID_FFVHUFF,
1190 .priv_data_size = sizeof(HYuvContext),
1191 .init = decode_init,
1192 .close = decode_end,
1193 .decode = decode_frame,
1194 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1195 CODEC_CAP_FRAME_THREADS,
1196 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),