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 34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
45 16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
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 66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
53 56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
54 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0,
58 static const unsigned char classic_add_luma[256] = {
59 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
60 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
61 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
62 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
63 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
64 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
65 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
66 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
67 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
68 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
69 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
70 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
71 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
72 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
73 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
74 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
77 static const unsigned char classic_add_chroma[256] = {
78 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
79 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
80 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
81 43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
82 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
83 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
84 17, 14, 5, 6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
85 112,113,114,115, 4,117,118, 92, 94,121,122, 3,124,103, 2, 1,
86 0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
87 135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
88 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
89 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
90 7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
91 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
92 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
93 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
96 static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
100 for (i = 0; i < n;) {
101 repeat = get_bits(gb, 3);
102 val = get_bits(gb, 5);
104 repeat = get_bits(gb, 8);
105 if (i + repeat > n || get_bits_left(gb) < 0) {
106 av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
115 static int generate_joint_tables(HYuvContext *s)
117 uint16_t symbols[1 << VLC_BITS];
118 uint16_t bits[1 << VLC_BITS];
119 uint8_t len[1 << VLC_BITS];
122 if (s->bitstream_bpp < 24 || s->version > 2) {
124 for (p = 0; p < 4; p++) {
125 int p0 = s->version > 2 ? p : 0;
126 for (i = y = 0; y < s->vlc_n; y++) {
127 int len0 = s->len[p0][y];
128 int limit = VLC_BITS - len0;
129 if(limit <= 0 || !len0)
131 if((sign_extend(y, 8) & (s->vlc_n-1)) != y)
133 for (u = 0; u < s->vlc_n; u++) {
134 int len1 = s->len[p][u];
135 if (len1 > limit || !len1)
137 if((sign_extend(u, 8) & (s->vlc_n-1)) != u)
139 av_assert0(i < (1 << VLC_BITS));
140 len[i] = len0 + len1;
141 bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
142 symbols[i] = (y << 8) + (u & 0xFF);
146 ff_free_vlc(&s->vlc[4 + p]);
147 if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
148 bits, 2, 2, symbols, 2, 2, 0)) < 0)
152 uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
153 int i, b, g, r, code;
154 int p0 = s->decorrelate;
155 int p1 = !s->decorrelate;
156 // restrict the range to +/-16 because that's pretty much guaranteed to
157 // cover all the combinations that fit in 11 bits total, and it doesn't
158 // matter if we miss a few rare codes.
159 for (i = 0, g = -16; g < 16; g++) {
160 int len0 = s->len[p0][g & 255];
161 int limit0 = VLC_BITS - len0;
162 if (limit0 < 2 || !len0)
164 for (b = -16; b < 16; b++) {
165 int len1 = s->len[p1][b & 255];
166 int limit1 = limit0 - len1;
167 if (limit1 < 1 || !len1)
169 code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
170 for (r = -16; r < 16; r++) {
171 int len2 = s->len[2][r & 255];
172 if (len2 > limit1 || !len2)
174 av_assert0(i < (1 << VLC_BITS));
175 len[i] = len0 + len1 + len2;
176 bits[i] = (code << len2) + s->bits[2][r & 255];
177 if (s->decorrelate) {
190 ff_free_vlc(&s->vlc[4]);
191 if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0)) < 0)
197 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
204 init_get_bits(&gb, src, length * 8);
207 count = 1 + s->alpha + 2*s->chroma;
209 for (i = 0; i < count; i++) {
210 if (read_len_table(s->len[i], &gb, s->vlc_n) < 0)
212 if (ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n) < 0) {
215 ff_free_vlc(&s->vlc[i]);
216 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
217 s->bits[i], 4, 4, 0)) < 0)
221 if ((ret = generate_joint_tables(s)) < 0)
224 return (get_bits_count(&gb) + 7) / 8;
227 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 (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 (read_len_table(s->len[1], &gb, 256) < 0)
243 for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
244 for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
246 if (s->bitstream_bpp >= 24) {
247 memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
248 memcpy(s->len[1] , s->len [0], 256 * sizeof(uint8_t));
250 memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
251 memcpy(s->len[2] , s->len [1], 256 * sizeof(uint8_t));
253 for (i = 0; i < 4; i++) {
254 ff_free_vlc(&s->vlc[i]);
255 if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
256 s->bits[i], 4, 4, 0)) < 0)
260 if ((ret = generate_joint_tables(s)) < 0)
266 static av_cold int decode_init(AVCodecContext *avctx)
268 HYuvContext *s = avctx->priv_data;
270 ff_huffyuvdsp_init(&s->hdsp);
271 memset(s->vlc, 0, 4 * sizeof(VLC));
273 s->interlaced = avctx->height > 288;
277 if (avctx->extradata_size) {
278 if ((avctx->bits_per_coded_sample & 7) &&
279 avctx->bits_per_coded_sample != 12)
280 s->version = 1; // do such files exist at all?
281 else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
290 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
292 if (s->version >= 2) {
293 int method, interlace;
295 if (avctx->extradata_size < 4)
298 method = ((uint8_t*)avctx->extradata)[0];
299 s->decorrelate = method & 64 ? 1 : 0;
300 s->predictor = method & 63;
301 if (s->version == 2) {
302 s->bitstream_bpp = ((uint8_t*)avctx->extradata)[1];
303 if (s->bitstream_bpp == 0)
304 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
306 s->bps = (avctx->extradata[1] >> 4) + 1;
308 s->vlc_n = FFMIN(s->n, MAX_VLC_N);
309 s->chroma_h_shift = avctx->extradata[1] & 3;
310 s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3;
311 s->yuv = !!(((uint8_t*)avctx->extradata)[2] & 1);
312 s->chroma= !!(((uint8_t*)avctx->extradata)[2] & 3);
313 s->alpha = !!(((uint8_t*)avctx->extradata)[2] & 4);
315 interlace = (((uint8_t*)avctx->extradata)[2] & 0x30) >> 4;
316 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced;
317 s->context = ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
319 if ( read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
320 avctx->extradata_size - 4) < 0)
321 return AVERROR_INVALIDDATA;
323 switch (avctx->bits_per_coded_sample & 7) {
333 s->predictor = PLANE;
334 s->decorrelate = avctx->bits_per_coded_sample >= 24;
337 s->predictor = MEDIAN;
341 s->predictor = LEFT; //OLD
345 s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
348 if (read_old_huffman_tables(s) < 0)
349 return AVERROR_INVALIDDATA;
352 if (s->version <= 2) {
353 switch (s->bitstream_bpp) {
355 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
360 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
362 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
368 avctx->pix_fmt = AV_PIX_FMT_0RGB32;
370 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 (ff_huffyuv_alloc_temp(s)) {
531 ff_huffyuv_common_end(s);
532 return AVERROR(ENOMEM);
538 static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
540 HYuvContext *s = avctx->priv_data;
543 if (ff_huffyuv_alloc_temp(s)) {
544 ff_huffyuv_common_end(s);
545 return AVERROR(ENOMEM);
548 for (i = 0; i < 8; i++)
549 s->vlc[i].table = NULL;
551 if (s->version >= 2) {
552 if (read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
553 avctx->extradata_size) < 0)
554 return AVERROR_INVALIDDATA;
556 if (read_old_huffman_tables(s) < 0)
557 return AVERROR_INVALIDDATA;
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) {
812 offset[0] = frame->linesize[0] * y;
813 offset[1] = frame->linesize[1] * cy;
814 offset[2] = frame->linesize[2] * cy;
815 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
819 s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h);
821 s->last_slice_end = y + h;
824 static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
827 return s->hdsp.add_hfyu_left_pred(dst, src, w, acc);
829 return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc);
833 static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
836 s->hdsp.add_bytes(dst, src, w);
838 s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
842 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)
845 s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top);
847 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);
850 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
853 const uint8_t *buf = avpkt->data;
854 int buf_size = avpkt->size;
855 HYuvContext *s = avctx->priv_data;
856 const int width = s->width;
857 const int width2 = s->width>>1;
858 const int height = s->height;
859 int fake_ystride, fake_ustride, fake_vstride;
860 ThreadFrame frame = { .f = data };
861 AVFrame * const p = data;
862 int table_size = 0, ret;
864 av_fast_padded_malloc(&s->bitstream_buffer,
865 &s->bitstream_buffer_size,
867 if (!s->bitstream_buffer)
868 return AVERROR(ENOMEM);
870 s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer,
871 (const uint32_t *) buf, buf_size / 4);
873 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
877 table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
879 return AVERROR_INVALIDDATA;
882 if ((unsigned)(buf_size-table_size) >= INT_MAX / 8)
883 return AVERROR_INVALIDDATA;
885 init_get_bits(&s->gb, s->bitstream_buffer+table_size,
886 (buf_size-table_size) * 8);
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 leftv = p->data[2][0] = get_bits(&s->gb, 8);
976 lefty = p->data[0][1] = get_bits(&s->gb, 8);
977 leftu = p->data[1][0] = get_bits(&s->gb, 8);
978 p->data[0][0] = get_bits(&s->gb, 8);
980 switch (s->predictor) {
983 decode_422_bitstream(s, width-2);
984 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
985 if (!(s->flags&CODEC_FLAG_GRAY)) {
986 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
987 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
990 for (cy = y = 1; y < s->height; y++, cy++) {
991 uint8_t *ydst, *udst, *vdst;
993 if (s->bitstream_bpp == 12) {
994 decode_gray_bitstream(s, width);
996 ydst = p->data[0] + p->linesize[0] * y;
998 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
999 if (s->predictor == PLANE) {
1000 if (y > s->interlaced)
1001 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1004 if (y >= s->height) break;
1007 draw_slice(s, p, y);
1009 ydst = p->data[0] + p->linesize[0]*y;
1010 udst = p->data[1] + p->linesize[1]*cy;
1011 vdst = p->data[2] + p->linesize[2]*cy;
1013 decode_422_bitstream(s, width);
1014 lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], width, lefty);
1015 if (!(s->flags & CODEC_FLAG_GRAY)) {
1016 leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu);
1017 leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv);
1019 if (s->predictor == PLANE) {
1020 if (cy > s->interlaced) {
1021 s->hdsp.add_bytes(ydst, ydst - fake_ystride, width);
1022 if (!(s->flags & CODEC_FLAG_GRAY)) {
1023 s->hdsp.add_bytes(udst, udst - fake_ustride, width2);
1024 s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2);
1029 draw_slice(s, p, height);
1033 /* first line except first 2 pixels is left predicted */
1034 decode_422_bitstream(s, width - 2);
1035 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], width - 2, lefty);
1036 if (!(s->flags & CODEC_FLAG_GRAY)) {
1037 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
1038 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
1043 /* second line is left predicted for interlaced case */
1044 if (s->interlaced) {
1045 decode_422_bitstream(s, width);
1046 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0], s->temp[0], width, lefty);
1047 if (!(s->flags & CODEC_FLAG_GRAY)) {
1048 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
1049 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
1054 /* next 4 pixels are left predicted too */
1055 decode_422_bitstream(s, 4);
1056 lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride, s->temp[0], 4, lefty);
1057 if (!(s->flags&CODEC_FLAG_GRAY)) {
1058 leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
1059 leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv);
1062 /* next line except the first 4 pixels is median predicted */
1063 lefttopy = p->data[0][3];
1064 decode_422_bitstream(s, width - 4);
1065 s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4, p->data[0] + 4, s->temp[0], width - 4, &lefty, &lefttopy);
1066 if (!(s->flags&CODEC_FLAG_GRAY)) {
1067 lefttopu = p->data[1][1];
1068 lefttopv = p->data[2][1];
1069 s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
1070 s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv);
1074 for (; y<height; y++, cy++) {
1075 uint8_t *ydst, *udst, *vdst;
1077 if (s->bitstream_bpp == 12) {
1078 while (2 * cy > y) {
1079 decode_gray_bitstream(s, width);
1080 ydst = p->data[0] + p->linesize[0] * y;
1081 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1084 if (y >= height) break;
1086 draw_slice(s, p, y);
1088 decode_422_bitstream(s, width);
1090 ydst = p->data[0] + p->linesize[0] * y;
1091 udst = p->data[1] + p->linesize[1] * cy;
1092 vdst = p->data[2] + p->linesize[2] * cy;
1094 s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
1095 if (!(s->flags & CODEC_FLAG_GRAY)) {
1096 s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
1097 s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv);
1101 draw_slice(s, p, height);
1108 const int last_line = (height - 1) * p->linesize[0];
1110 if (s->bitstream_bpp == 32) {
1111 left[A] = p->data[0][last_line+A] = get_bits(&s->gb, 8);
1112 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1113 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1114 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1116 left[R] = p->data[0][last_line+R] = get_bits(&s->gb, 8);
1117 left[G] = p->data[0][last_line+G] = get_bits(&s->gb, 8);
1118 left[B] = p->data[0][last_line+B] = get_bits(&s->gb, 8);
1119 left[A] = p->data[0][last_line+A] = 255;
1120 skip_bits(&s->gb, 8);
1124 switch (s->predictor) {
1127 decode_bgr_bitstream(s, width - 1);
1128 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4, s->temp[0], width - 1, left);
1130 for (y = s->height - 2; y >= 0; y--) { //Yes it is stored upside down.
1131 decode_bgr_bitstream(s, width);
1133 s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y, s->temp[0], width, left);
1134 if (s->predictor == PLANE) {
1135 if (s->bitstream_bpp != 32) left[A] = 0;
1136 if ((y & s->interlaced) == 0 &&
1137 y < s->height - 1 - s->interlaced) {
1138 s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y,
1139 p->data[0] + p->linesize[0] * y +
1140 fake_ystride, fake_ystride);
1144 // just 1 large slice as this is not possible in reverse order
1145 draw_slice(s, p, height);
1148 av_log(avctx, AV_LOG_ERROR,
1149 "prediction type not supported!\n");
1152 av_log(avctx, AV_LOG_ERROR,
1153 "BGR24 output is not implemented yet\n");
1154 return AVERROR_PATCHWELCOME;
1161 return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size;
1164 static av_cold int decode_end(AVCodecContext *avctx)
1166 HYuvContext *s = avctx->priv_data;
1169 ff_huffyuv_common_end(s);
1170 av_freep(&s->bitstream_buffer);
1172 for (i = 0; i < 8; i++) {
1173 ff_free_vlc(&s->vlc[i]);
1179 AVCodec ff_huffyuv_decoder = {
1181 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1182 .type = AVMEDIA_TYPE_VIDEO,
1183 .id = AV_CODEC_ID_HUFFYUV,
1184 .priv_data_size = sizeof(HYuvContext),
1185 .init = decode_init,
1186 .close = decode_end,
1187 .decode = decode_frame,
1188 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1189 CODEC_CAP_FRAME_THREADS,
1190 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1193 #if CONFIG_FFVHUFF_DECODER
1194 AVCodec ff_ffvhuff_decoder = {
1196 .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1197 .type = AVMEDIA_TYPE_VIDEO,
1198 .id = AV_CODEC_ID_FFVHUFF,
1199 .priv_data_size = sizeof(HYuvContext),
1200 .init = decode_init,
1201 .close = decode_end,
1202 .decode = decode_frame,
1203 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
1204 CODEC_CAP_FRAME_THREADS,
1205 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),