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
33 #define UNCHECKED_BITSTREAM_READER 1
38 #include "huffyuvdsp.h"
40 #include "libavutil/pixdesc.h"
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,
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,
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,
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,
97 static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
101 for (i = 0; i < n;) {
102 repeat = get_bits(gb, 3);
103 val = get_bits(gb, 5);
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;
116 static int generate_joint_tables(HYuvContext *s)
118 uint16_t symbols[1 << VLC_BITS];
119 uint16_t bits[1 << VLC_BITS];
120 uint8_t len[1 << VLC_BITS];
123 if (s->bitstream_bpp < 24 || s->version > 2) {
125 for (p = 0; p < 4; p++) {
126 int p0 = s->version > 2 ? p : 0;
127 for (i = y = 0; y < s->vlc_n; y++) {
128 int len0 = s->len[p0][y];
129 int limit = VLC_BITS - len0;
130 if (limit <= 0 || !len0)
132 if ((sign_extend(y, 8) & (s->vlc_n-1)) != y)
134 for (u = 0; u < s->vlc_n; u++) {
135 int len1 = s->len[p][u];
136 if (len1 > limit || !len1)
138 if ((sign_extend(u, 8) & (s->vlc_n-1)) != u)
140 av_assert0(i < (1 << VLC_BITS));
141 len[i] = len0 + len1;
142 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
143 symbols[i] = (y << 8) + (u & 0xFF);
147 ff_free_vlc(&s->vlc[4 + p]);
148 if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
149 bits, 2, 2, symbols, 2, 2, 0)) < 0)
153 uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map;
154 int i, b, g, r, code;
155 int p0 = s->decorrelate;
156 int p1 = !s->decorrelate;
157 /* Restrict the range to +/-16 because that's pretty much guaranteed
158 * to cover all the combinations that fit in 11 bits total, and it
159 * does not matter if we miss a few rare codes. */
160 for (i = 0, g = -16; g < 16; g++) {
161 int len0 = s->len[p0][g & 255];
162 int limit0 = VLC_BITS - len0;
163 if (limit0 < 2 || !len0)
165 for (b = -16; b < 16; b++) {
166 int len1 = s->len[p1][b & 255];
167 int limit1 = limit0 - len1;
168 if (limit1 < 1 || !len1)
170 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
171 for (r = -16; r < 16; r++) {
172 int len2 = s->len[2][r & 255];
173 if (len2 > limit1 || !len2)
175 av_assert0(i < (1 << VLC_BITS));
176 len[i] = len0 + len1 + len2;
177 bits[i] = (code << len2) + s->bits[2][r & 255];
178 if (s->decorrelate) {
191 ff_free_vlc(&s->vlc[4]);
192 if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1,
199 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
205 if ((ret = init_get_bits(&gb, src, length * 8)) < 0)
209 count = 1 + s->alpha + 2*s->chroma;
211 for (i = 0; i < count; i++) {
212 if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
214 if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
216 ff_free_vlc(&s->vlc[i]);
217 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
218 s->bits[i], 4, 4, 0)) < 0)
222 if ((ret = generate_joint_tables(s)) < 0)
225 return (get_bits_count(&gb) + 7) / 8;
228 static int read_old_huffman_tables(HYuvContext *s)
233 init_get_bits(&gb, classic_shift_luma,
234 classic_shift_luma_table_size * 8);
235 if ((ret = read_len_table(s->len[0], &gb, 256)) < 0)
238 init_get_bits(&gb, classic_shift_chroma,
239 classic_shift_chroma_table_size * 8);
240 if ((ret = read_len_table(s->len[1], &gb, 256)) < 0)
243 for (i = 0; i < 256; i++)
244 s->bits[0][i] = classic_add_luma[i];
245 for (i = 0; i < 256; i++)
246 s->bits[1][i] = classic_add_chroma[i];
248 if (s->bitstream_bpp >= 24) {
249 memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
250 memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
252 memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
253 memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));
255 for (i = 0; i < 4; i++) {
256 ff_free_vlc(&s->vlc[i]);
257 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
258 s->bits[i], 4, 4, 0)) < 0)
262 if ((ret = generate_joint_tables(s)) < 0)
268 static av_cold int decode_init(AVCodecContext *avctx)
270 HYuvContext *s = avctx->priv_data;
273 ff_huffyuvdsp_init(&s->hdsp);
274 memset(s->vlc, 0, 4 * sizeof(VLC));
276 s->interlaced = avctx->height > 288;
279 if (avctx->extradata_size) {
280 if ((avctx->bits_per_coded_sample & 7) &&
281 avctx->bits_per_coded_sample != 12)
282 s->version = 1; // do such files exist at all?
283 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
292 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
294 if (s->version >= 2) {
295 int method, interlace;
297 if (avctx->extradata_size < 4)
298 return AVERROR_INVALIDDATA;
300 method = avctx->extradata[0];
301 s->decorrelate = method & 64 ? 1 : 0;
302 s->predictor = method & 63;
303 if (s->version == 2) {
304 s->bitstream_bpp = avctx->extradata[1];
305 if (s->bitstream_bpp == 0)
306 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
308 s->bps = (avctx->extradata[1] >> 4) + 1;
310 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
311 s->chroma_h_shift = avctx->extradata[1] & 3;
312 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
313 s->yuv = !!(avctx->extradata[2] & 1);
314 s->chroma= !!(avctx->extradata[2] & 3);
315 s->alpha = !!(avctx->extradata[2] & 4);
317 interlace = (avctx->extradata[2] & 0x30) >> 4;
318 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
319 s->context = avctx->extradata[2] & 0x40 ? 1 : 0;
321 if ((ret = read_huffman_tables(s, avctx->extradata + 4,
322 avctx->extradata_size - 4)) < 0)
325 switch (avctx->bits_per_coded_sample & 7) {
335 s->predictor = PLANE;
336 s->decorrelate = avctx->bits_per_coded_sample >= 24;
339 s->predictor = MEDIAN;
343 s->predictor = LEFT; // OLD
347 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
350 if ((ret = read_old_huffman_tables(s)) < 0)
354 if (s->version <= 2) {
355 switch (s->bitstream_bpp) {
357 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
362 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
364 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
369 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
371 avctx->pix_fmt = AV_PIX_FMT_BGR24;
374 av_assert0(s->bgr32);
375 avctx->pix_fmt = AV_PIX_FMT_RGB32;
379 return AVERROR_INVALIDDATA;
381 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt,
385 switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) {
387 avctx->pix_fmt = AV_PIX_FMT_GRAY8;
390 avctx->pix_fmt = AV_PIX_FMT_GRAY16;
393 avctx->pix_fmt = AV_PIX_FMT_GRAY8A;
396 avctx->pix_fmt = AV_PIX_FMT_GBRP;
399 avctx->pix_fmt = AV_PIX_FMT_GBRP9;
402 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
405 avctx->pix_fmt = AV_PIX_FMT_GBRP12;
408 avctx->pix_fmt = AV_PIX_FMT_GBRP14;
411 avctx->pix_fmt = AV_PIX_FMT_GBRP16;
414 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
417 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
420 avctx->pix_fmt = AV_PIX_FMT_YUV444P9;
423 avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
426 avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
429 avctx->pix_fmt = AV_PIX_FMT_YUV444P14;
432 avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
435 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
438 avctx->pix_fmt = AV_PIX_FMT_YUV422P9;
441 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
444 avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
447 avctx->pix_fmt = AV_PIX_FMT_YUV422P14;
450 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
453 avctx->pix_fmt = AV_PIX_FMT_YUV411P;
456 avctx->pix_fmt = AV_PIX_FMT_YUV440P;
459 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
462 avctx->pix_fmt = AV_PIX_FMT_YUV420P9;
465 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
468 avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
471 avctx->pix_fmt = AV_PIX_FMT_YUV420P14;
474 avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
477 avctx->pix_fmt = AV_PIX_FMT_YUV410P;
480 avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
483 avctx->pix_fmt = AV_PIX_FMT_YUVA444P9;
486 avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
489 avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
492 avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
495 avctx->pix_fmt = AV_PIX_FMT_YUVA422P9;
498 avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
501 avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
504 avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
507 avctx->pix_fmt = AV_PIX_FMT_YUVA420P9;
510 avctx->pix_fmt = AV_PIX_FMT_YUVA420P10;
513 avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
516 return AVERROR_INVALIDDATA;
520 ff_huffyuv_common_init(avctx);
522 if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) {
523 av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
524 return AVERROR_INVALIDDATA;
526 if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P && avctx->width%4) {
527 av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 this colorspace and predictor\n");
528 return AVERROR_INVALIDDATA;
530 if ((ret = ff_huffyuv_alloc_temp(s)) < 0) {
531 ff_huffyuv_common_end(s);
538 static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
540 HYuvContext *s = avctx->priv_data;
543 if ((ret = ff_huffyuv_alloc_temp(s)) < 0) {
544 ff_huffyuv_common_end(s);
548 for (i = 0; i < 8; i++)
549 s->vlc[i].table = NULL;
551 if (s->version >= 2) {
552 if ((ret = read_huffman_tables(s, avctx->extradata + 4,
553 avctx->extradata_size)) < 0)
556 if ((ret = read_old_huffman_tables(s)) < 0)
563 /** Subset of GET_VLC for use in hand-roller VLC code */
564 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
565 code = table[index][0]; \
566 n = table[index][1]; \
567 if (max_depth > 1 && n < 0) { \
568 LAST_SKIP_BITS(name, gb, bits); \
569 UPDATE_CACHE(name, gb); \
572 index = SHOW_UBITS(name, gb, nb_bits) + code; \
573 code = table[index][0]; \
574 n = table[index][1]; \
575 if (max_depth > 2 && n < 0) { \
576 LAST_SKIP_BITS(name, gb, nb_bits); \
577 UPDATE_CACHE(name, gb); \
580 index = SHOW_UBITS(name, gb, nb_bits) + code; \
581 code = table[index][0]; \
582 n = table[index][1]; \
586 LAST_SKIP_BITS(name, gb, n)
589 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
590 bits, max_depth, OP) \
592 unsigned int index = SHOW_UBITS(name, gb, bits); \
593 int code, n = dtable[index][1]; \
597 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
599 UPDATE_CACHE(re, gb); \
600 index = SHOW_UBITS(name, gb, bits); \
601 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
603 code = dtable[index][0]; \
604 OP(dst0, dst1, code); \
605 LAST_SKIP_BITS(name, gb, n); \
609 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
611 #define READ_2PIX(dst0, dst1, plane1) \
612 UPDATE_CACHE(re, &s->gb); \
613 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
614 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
616 static void decode_422_bitstream(HYuvContext *s, int count)
619 OPEN_READER(re, &s->gb);
622 icount = get_bits_left(&s->gb) / (32 * 4);
623 if (count >= icount) {
624 for (i = 0; i < icount; i++) {
625 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
626 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
628 for (; i < count && get_bits_left(&s->gb) > 0; i++) {
629 READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1);
630 if (get_bits_left(&s->gb) <= 0) break;
631 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
633 for (; i < count; i++)
634 s->temp[0][2 * i ] = s->temp[1][i] =
635 s->temp[0][2 * i + 1] = s->temp[2][i] = 0;
637 for (i = 0; i < count; i++) {
638 READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1);
639 READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2);
642 CLOSE_READER(re, &s->gb);
645 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
646 UPDATE_CACHE(re, &s->gb); \
647 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
648 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
650 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
652 /* TODO instead of restarting the read when the code isn't in the first level
653 * of the joint table, jump into the 2nd level of the individual table. */
654 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
655 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
656 dst0 += get_bits(&s->gb, 2);\
657 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
658 dst1 += get_bits(&s->gb, 2);\
660 static void decode_plane_bitstream(HYuvContext *s, int count, int plane)
667 OPEN_READER(re, &s->gb);
668 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
669 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
670 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
673 for(i=0; i<count; i++){
674 READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits);
677 CLOSE_READER(re, &s->gb);
678 } else if (s->bps <= 14) {
679 OPEN_READER(re, &s->gb);
680 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
681 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
682 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
685 for(i=0; i<count; i++){
686 READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits);
689 CLOSE_READER(re, &s->gb);
691 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
692 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
693 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
696 for(i=0; i<count; i++){
697 READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane);
703 static void decode_gray_bitstream(HYuvContext *s, int count)
706 OPEN_READER(re, &s->gb);
709 if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
710 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
711 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
714 for (i = 0; i < count; i++) {
715 READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
718 CLOSE_READER(re, &s->gb);
721 static av_always_inline void decode_bgr_1(HYuvContext *s, int count,
722 int decorrelate, int alpha)
725 OPEN_READER(re, &s->gb);
727 for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
731 UPDATE_CACHE(re, &s->gb);
732 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
733 n = s->vlc[4].table[index][1];
736 code = s->vlc[4].table[index][0];
737 *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code];
738 LAST_SKIP_BITS(re, &s->gb, n);
742 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
743 &s->gb, re, VLC_BITS, 3);
745 UPDATE_CACHE(re, &s->gb);
746 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
747 VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3);
748 s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G];
750 UPDATE_CACHE(re, &s->gb);
751 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
752 VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3);
753 s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G];
755 VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table,
756 &s->gb, re, VLC_BITS, 3);
758 UPDATE_CACHE(re, &s->gb);
759 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
760 VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table,
761 &s->gb, re, VLC_BITS, 3);
763 UPDATE_CACHE(re, &s->gb);
764 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
765 VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table,
766 &s->gb, re, VLC_BITS, 3);
769 UPDATE_CACHE(re, &s->gb);
770 index = SHOW_UBITS(re, &s->gb, VLC_BITS);
771 VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table,
772 &s->gb, re, VLC_BITS, 3);
774 s->temp[0][4 * i + A] = 0;
777 CLOSE_READER(re, &s->gb);
780 static void decode_bgr_bitstream(HYuvContext *s, int count)
782 if (s->decorrelate) {
783 if (s->bitstream_bpp == 24)
784 decode_bgr_1(s, count, 1, 0);
786 decode_bgr_1(s, count, 1, 1);
788 if (s->bitstream_bpp == 24)
789 decode_bgr_1(s, count, 0, 0);
791 decode_bgr_1(s, count, 0, 1);
795 static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
798 int offset[AV_NUM_DATA_POINTERS];
800 if (s->avctx->draw_horiz_band == NULL)
803 h = y - s->last_slice_end;
806 if (s->bitstream_bpp == 12)
811 offset[0] = frame->linesize[0] * y;
812 offset[1] = frame->linesize[1] * cy;
813 offset[2] = frame->linesize[2] * cy;
814 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
818 s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
820 s->last_slice_end = y + h;
823 static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
826 return s->hdsp.add_hfyu_left_pred(dst, src, w, acc);
828 return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
832 static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
835 s->hdsp.add_bytes(dst, src, w);
837 s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
841 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)
844 s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top);
846 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);
849 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
852 const uint8_t *buf = avpkt->data;
853 int buf_size = avpkt->size;
854 HYuvContext *s = avctx->priv_data;
855 const int width = s->width;
856 const int width2 = s->width >> 1;
857 const int height = s->height;
858 int fake_ystride, fake_ustride, fake_vstride;
859 ThreadFrame frame = { .f = data };
860 AVFrame *const p = data;
861 int table_size = 0, ret;
863 av_fast_padded_malloc(&s->bitstream_buffer,
864 &s->bitstream_buffer_size,
866 if (!s->bitstream_buffer)
867 return AVERROR(ENOMEM);
869 s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer,
870 (const uint32_t *) buf, buf_size / 4);
872 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
876 table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
881 if ((unsigned) (buf_size - table_size) >= INT_MAX / 8)
882 return AVERROR_INVALIDDATA;
884 if ((ret = init_get_bits(&s->gb, s->bitstream_buffer + table_size,
885 (buf_size - table_size) * 8)) < 0)
888 fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0];
889 fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1];
890 fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2];
892 s->last_slice_end = 0;
894 if (s->version > 2) {
896 for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) {
897 int left, lefttop, y;
900 int fake_stride = fake_ystride;
902 if (s->chroma && (plane == 1 || plane == 2)) {
903 w >>= s->chroma_h_shift;
904 h >>= s->chroma_v_shift;
905 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
908 switch (s->predictor) {
911 decode_plane_bitstream(s, w, plane);
912 left = left_prediction(s, p->data[plane], s->temp[0], w, 0);
914 for (y = 1; y < h; y++) {
915 uint8_t *dst = p->data[plane] + p->linesize[plane]*y;
917 decode_plane_bitstream(s, w, plane);
918 left = left_prediction(s, dst, s->temp[0], w, left);
919 if (s->predictor == PLANE) {
920 if (y > s->interlaced) {
921 add_bytes(s, dst, dst - fake_stride, w);
928 decode_plane_bitstream(s, w, plane);
929 left= left_prediction(s, p->data[plane], s->temp[0], w, 0);
933 /* second line is left predicted for interlaced case */
935 decode_plane_bitstream(s, w, plane);
936 left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left);
940 lefttop = p->data[plane][0];
941 decode_plane_bitstream(s, w, plane);
942 add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop);
948 decode_plane_bitstream(s, w, plane);
950 dst = p->data[plane] + p->linesize[plane] * y;
952 add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop);
958 draw_slice(s, p, height);
959 } else if (s->bitstream_bpp < 24) {
961 int lefty, leftu, leftv;
962 int lefttopy, lefttopu, lefttopv;
965 p->data[0][3] = get_bits(&s->gb, 8);
966 p->data[0][2] = get_bits(&s->gb, 8);
967 p->data[0][1] = get_bits(&s->gb, 8);
968 p->data[0][0] = get_bits(&s->gb, 8);
970 av_log(avctx, AV_LOG_ERROR,
971 "YUY2 output is not implemented yet\n");
972 return AVERROR_PATCHWELCOME;
975 p->data[2][0] = get_bits(&s->gb, 8);
977 p->data[0][1] = get_bits(&s->gb, 8);
979 p->data[1][0] = get_bits(&s->gb, 8);
980 p->data[0][0] = get_bits(&s->gb, 8);
982 switch (s->predictor) {
985 decode_422_bitstream(s, width - 2);
986 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0],
988 if (!(s->flags & CODEC_FLAG_GRAY)) {
989 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
990 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
993 for (cy = y = 1; y < s->height; y++, cy++) {
994 uint8_t *ydst, *udst, *vdst;
996 if (s->bitstream_bpp == 12) {
997 decode_gray_bitstream(s, width);
999 ydst = p->data[0] + p->linesize[0] * y;
1001 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0],
1003 if (s->predictor == PLANE) {
1004 if (y > s->interlaced)
1005 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1012 draw_slice(s, p, y);
1014 ydst = p->data[0] + p->linesize[0] * y;
1015 udst = p->data[1] + p->linesize[1] * cy;
1016 vdst = p->data[2] + p->linesize[2] * cy;
1018 decode_422_bitstream(s, width);
1019 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0],
1021 if (!(s->flags & CODEC_FLAG_GRAY)) {
1022 leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu);
1023 leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv);
1025 if (s->predictor == PLANE) {
1026 if (cy > s->interlaced) {
1027 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1028 if (!(s->flags & CODEC_FLAG_GRAY)) {
1029 s->hdsp.add_bytes(udst, udst - fake_ustride, width2);
1030 s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2);
1035 draw_slice(s, p, height);
1039 /* first line except first 2 pixels is left predicted */
1040 decode_422_bitstream(s, width - 2);
1041 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0],
1043 if (!(s->flags & CODEC_FLAG_GRAY)) {
1044 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1045 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1050 /* second line is left predicted for interlaced case */
1051 if (s->interlaced) {
1052 decode_422_bitstream(s, width);
1053 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0],
1054 s->temp[0], width, lefty);
1055 if (!(s->flags & CODEC_FLAG_GRAY)) {
1056 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1057 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1063 /* next 4 pixels are left predicted too */
1064 decode_422_bitstream(s, 4);
1065 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride,
1066 s->temp[0], 4, lefty);
1067 if (!(s->flags & CODEC_FLAG_GRAY)) {
1068 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1069 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1072 /* next line except the first 4 pixels is median predicted */
1073 lefttopy = p->data[0][3];
1074 decode_422_bitstream(s, width - 4);
1075 s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4,
1076 p->data[0] + 4, s->temp[0],
1077 width - 4, &lefty, &lefttopy);
1078 if (!(s->flags & CODEC_FLAG_GRAY)) {
1079 lefttopu = p->data[1][1];
1080 lefttopv = p->data[2][1];
1081 s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1082 s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1087 for (; y < height; y++, cy++) {
1088 uint8_t *ydst, *udst, *vdst;
1090 if (s->bitstream_bpp == 12) {
1091 while (2 * cy > y) {
1092 decode_gray_bitstream(s, width);
1093 ydst = p->data[0] + p->linesize[0] * y;
1094 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride,
1102 draw_slice(s, p, y);
1104 decode_422_bitstream(s, width);
1106 ydst = p->data[0] + p->linesize[0] * y;
1107 udst = p->data[1] + p->linesize[1] * cy;
1108 vdst = p->data[2] + p->linesize[2] * cy;
1110 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride,
1113 if (!(s->flags & CODEC_FLAG_GRAY)) {
1114 s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1115 s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1119 draw_slice(s, p, height);
1126 const int last_line = (height - 1) * p->linesize[0];
1128 if (s->bitstream_bpp == 32) {
1129 left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8);
1130 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1131 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1132 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1134 left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8);
1135 left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8);
1136 left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8);
1137 left[A] = p->data[0][last_line + A] = 255;
1138 skip_bits(&s->gb, 8);
1142 switch (s->predictor) {
1145 decode_bgr_bitstream(s, width - 1);
1146 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4,
1147 s->temp[0], width - 1, left);
1149 for (y = s->height - 2; y >= 0; y--) { // Yes it is stored upside down.
1150 decode_bgr_bitstream(s, width);
1152 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y,
1153 s->temp[0], width, left);
1154 if (s->predictor == PLANE) {
1155 if (s->bitstream_bpp != 32)
1157 if ((y & s->interlaced) == 0 &&
1158 y < s->height - 1 - s->interlaced) {
1159 s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y,
1160 p->data[0] + p->linesize[0] * y +
1161 fake_ystride, fake_ystride);
1165 // just 1 large slice as this is not possible in reverse order
1166 draw_slice(s, p, height);
1169 av_log(avctx, AV_LOG_ERROR,
1170 "prediction type not supported!\n");
1173 av_log(avctx, AV_LOG_ERROR,
1174 "BGR24 output is not implemented yet\n");
1175 return AVERROR_PATCHWELCOME;
1182 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1185 static av_cold int decode_end(AVCodecContext *avctx)
1187 HYuvContext *s = avctx->priv_data;
1190 ff_huffyuv_common_end(s);
1191 av_freep(&s->bitstream_buffer);
1193 for (i = 0; i < 8; i++)
1194 ff_free_vlc(&s->vlc[i]);
1199 AVCodec ff_huffyuv_decoder = {
1201 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1202 .type = AVMEDIA_TYPE_VIDEO,
1203 .id = AV_CODEC_ID_HUFFYUV,
1204 .priv_data_size = sizeof(HYuvContext),
1205 .init = decode_init,
1206 .close = decode_end,
1207 .decode = decode_frame,
1208 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1209 CODEC_CAP_FRAME_THREADS,
1210 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1213 #if CONFIG_FFVHUFF_DECODER
1214 AVCodec ff_ffvhuff_decoder = {
1216 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1217 .type = AVMEDIA_TYPE_VIDEO,
1218 .id = AV_CODEC_ID_FFVHUFF,
1219 .priv_data_size = sizeof(HYuvContext),
1220 .init = decode_init,
1221 .close = decode_end,
1222 .decode = decode_frame,
1223 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1224 CODEC_CAP_FRAME_THREADS,
1225 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1227 #endif /* CONFIG_FFVHUFF_DECODER */