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
)
119 uint16_t *symbols
= av_mallocz(5 << VLC_BITS
);
123 return AVERROR(ENOMEM
);
124 bits
= symbols
+ (1 << VLC_BITS
);
125 len
= (uint8_t *)(bits
+ (1 << VLC_BITS
));
127 if (s
->bitstream_bpp
< 24 || s
->version
> 2) {
129 for (p
= 0; p
< 4; p
++) {
130 int p0
= s
->version
> 2 ? p
: 0;
131 for (i
= y
= 0; y
< s
->vlc_n
; y
++) {
132 int len0
= s
->len
[p0
][y
];
133 int limit
= VLC_BITS
- len0
;
134 if (limit
<= 0 || !len0
)
136 if ((sign_extend(y
, 8) & (s
->vlc_n
-1)) != y
)
138 for (u
= 0; u
< s
->vlc_n
; u
++) {
139 int len1
= s
->len
[p
][u
];
140 if (len1
> limit
|| !len1
)
142 if ((sign_extend(u
, 8) & (s
->vlc_n
-1)) != u
)
144 av_assert0(i
< (1 << VLC_BITS
));
145 len
[i
] = len0
+ len1
;
146 bits
[i
] = (s
->bits
[p0
][y
] << len1
) + s
->bits
[p
][u
];
147 symbols
[i
] = (y
<< 8) + (u
& 0xFF);
151 ff_free_vlc(&s
->vlc
[4 + p
]);
152 if ((ret
= ff_init_vlc_sparse(&s
->vlc
[4 + p
], VLC_BITS
, i
, len
, 1, 1,
153 bits
, 2, 2, symbols
, 2, 2, 0)) < 0)
157 uint8_t (*map
)[4] = (uint8_t(*)[4]) s
->pix_bgr_map
;
158 int i
, b
, g
, r
, code
;
159 int p0
= s
->decorrelate
;
160 int p1
= !s
->decorrelate
;
161 /* Restrict the range to +/-16 because that's pretty much guaranteed
162 * to cover all the combinations that fit in 11 bits total, and it
163 * does not matter if we miss a few rare codes. */
164 for (i
= 0, g
= -16; g
< 16; g
++) {
165 int len0
= s
->len
[p0
][g
& 255];
166 int limit0
= VLC_BITS
- len0
;
167 if (limit0
< 2 || !len0
)
169 for (b
= -16; b
< 16; b
++) {
170 int len1
= s
->len
[p1
][b
& 255];
171 int limit1
= limit0
- len1
;
172 if (limit1
< 1 || !len1
)
174 code
= (s
->bits
[p0
][g
& 255] << len1
) + s
->bits
[p1
][b
& 255];
175 for (r
= -16; r
< 16; r
++) {
176 int len2
= s
->len
[2][r
& 255];
177 if (len2
> limit1
|| !len2
)
179 av_assert0(i
< (1 << VLC_BITS
));
180 len
[i
] = len0
+ len1
+ len2
;
181 bits
[i
] = (code
<< len2
) + s
->bits
[2][r
& 255];
182 if (s
->decorrelate
) {
195 ff_free_vlc(&s
->vlc
[4]);
196 if ((ret
= init_vlc(&s
->vlc
[4], VLC_BITS
, i
, len
, 1, 1,
206 static int read_huffman_tables(HYuvContext
*s
, const uint8_t *src
, int length
)
212 if ((ret
= init_get_bits(&gb
, src
, length
* 8)) < 0)
216 count
= 1 + s
->alpha
+ 2*s
->chroma
;
218 for (i
= 0; i
< count
; i
++) {
219 if ((ret
= read_len_table(s
->len
[i
], &gb
, s
->vlc_n
)) < 0)
221 if ((ret
= ff_huffyuv_generate_bits_table(s
->bits
[i
], s
->len
[i
], s
->vlc_n
)) < 0)
223 ff_free_vlc(&s
->vlc
[i
]);
224 if ((ret
= init_vlc(&s
->vlc
[i
], VLC_BITS
, s
->vlc_n
, s
->len
[i
], 1, 1,
225 s
->bits
[i
], 4, 4, 0)) < 0)
229 if ((ret
= generate_joint_tables(s
)) < 0)
232 return (get_bits_count(&gb
) + 7) / 8;
235 static int read_old_huffman_tables(HYuvContext
*s
)
240 init_get_bits(&gb
, classic_shift_luma
,
241 classic_shift_luma_table_size
* 8);
242 if ((ret
= read_len_table(s
->len
[0], &gb
, 256)) < 0)
245 init_get_bits(&gb
, classic_shift_chroma
,
246 classic_shift_chroma_table_size
* 8);
247 if ((ret
= read_len_table(s
->len
[1], &gb
, 256)) < 0)
250 for (i
= 0; i
< 256; i
++)
251 s
->bits
[0][i
] = classic_add_luma
[i
];
252 for (i
= 0; i
< 256; i
++)
253 s
->bits
[1][i
] = classic_add_chroma
[i
];
255 if (s
->bitstream_bpp
>= 24) {
256 memcpy(s
->bits
[1], s
->bits
[0], 256 * sizeof(uint32_t));
257 memcpy(s
->len
[1], s
->len
[0], 256 * sizeof(uint8_t));
259 memcpy(s
->bits
[2], s
->bits
[1], 256 * sizeof(uint32_t));
260 memcpy(s
->len
[2], s
->len
[1], 256 * sizeof(uint8_t));
262 for (i
= 0; i
< 4; i
++) {
263 ff_free_vlc(&s
->vlc
[i
]);
264 if ((ret
= init_vlc(&s
->vlc
[i
], VLC_BITS
, 256, s
->len
[i
], 1, 1,
265 s
->bits
[i
], 4, 4, 0)) < 0)
269 if ((ret
= generate_joint_tables(s
)) < 0)
275 static av_cold
int decode_init(AVCodecContext
*avctx
)
277 HYuvContext
*s
= avctx
->priv_data
;
280 ff_huffyuvdsp_init(&s
->hdsp
);
281 memset(s
->vlc
, 0, 4 * sizeof(VLC
));
283 s
->interlaced
= avctx
->height
> 288;
286 if (avctx
->extradata_size
) {
287 if ((avctx
->bits_per_coded_sample
& 7) &&
288 avctx
->bits_per_coded_sample
!= 12)
289 s
->version
= 1; // do such files exist at all?
290 else if (avctx
->extradata_size
> 3 && avctx
->extradata
[3] == 0)
299 s
->vlc_n
= FFMIN(s
->n
, MAX_VLC_N
);
301 if (s
->version
>= 2) {
302 int method
, interlace
;
304 if (avctx
->extradata_size
< 4)
305 return AVERROR_INVALIDDATA
;
307 method
= avctx
->extradata
[0];
308 s
->decorrelate
= method
& 64 ? 1 : 0;
309 s
->predictor
= method
& 63;
310 if (s
->version
== 2) {
311 s
->bitstream_bpp
= avctx
->extradata
[1];
312 if (s
->bitstream_bpp
== 0)
313 s
->bitstream_bpp
= avctx
->bits_per_coded_sample
& ~7;
315 s
->bps
= (avctx
->extradata
[1] >> 4) + 1;
317 s
->vlc_n
= FFMIN(s
->n
, MAX_VLC_N
);
318 s
->chroma_h_shift
= avctx
->extradata
[1] & 3;
319 s
->chroma_v_shift
= (avctx
->extradata
[1] >> 2) & 3;
320 s
->yuv
= !!(avctx
->extradata
[2] & 1);
321 s
->chroma
= !!(avctx
->extradata
[2] & 3);
322 s
->alpha
= !!(avctx
->extradata
[2] & 4);
324 interlace
= (avctx
->extradata
[2] & 0x30) >> 4;
325 s
->interlaced
= (interlace
== 1) ? 1 : (interlace
== 2) ? 0 : s
->interlaced
;
326 s
->context
= avctx
->extradata
[2] & 0x40 ? 1 : 0;
328 if ((ret
= read_huffman_tables(s
, avctx
->extradata
+ 4,
329 avctx
->extradata_size
- 4)) < 0)
332 switch (avctx
->bits_per_coded_sample
& 7) {
342 s
->predictor
= PLANE
;
343 s
->decorrelate
= avctx
->bits_per_coded_sample
>= 24;
346 s
->predictor
= MEDIAN
;
350 s
->predictor
= LEFT
; // OLD
354 s
->bitstream_bpp
= avctx
->bits_per_coded_sample
& ~7;
357 if ((ret
= read_old_huffman_tables(s
)) < 0)
361 if (s
->version
<= 2) {
362 switch (s
->bitstream_bpp
) {
364 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P
;
369 avctx
->pix_fmt
= AV_PIX_FMT_YUYV422
;
371 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P
;
376 avctx
->pix_fmt
= AV_PIX_FMT_0RGB32
;
378 avctx
->pix_fmt
= AV_PIX_FMT_BGR24
;
381 av_assert0(s
->bgr32
);
382 avctx
->pix_fmt
= AV_PIX_FMT_RGB32
;
386 return AVERROR_INVALIDDATA
;
388 av_pix_fmt_get_chroma_sub_sample(avctx
->pix_fmt
,
392 switch ( (s
->chroma
<<10) | (s
->yuv
<<9) | (s
->alpha
<<8) | ((s
->bps
-1)<<4) | s
->chroma_h_shift
| (s
->chroma_v_shift
<<2)) {
394 avctx
->pix_fmt
= AV_PIX_FMT_GRAY8
;
397 avctx
->pix_fmt
= AV_PIX_FMT_GRAY16
;
400 avctx
->pix_fmt
= AV_PIX_FMT_GRAY8A
;
403 avctx
->pix_fmt
= AV_PIX_FMT_GBRP
;
406 avctx
->pix_fmt
= AV_PIX_FMT_GBRP9
;
409 avctx
->pix_fmt
= AV_PIX_FMT_GBRP10
;
412 avctx
->pix_fmt
= AV_PIX_FMT_GBRP12
;
415 avctx
->pix_fmt
= AV_PIX_FMT_GBRP14
;
418 avctx
->pix_fmt
= AV_PIX_FMT_GBRP16
;
421 avctx
->pix_fmt
= AV_PIX_FMT_GBRAP
;
424 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P
;
427 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P9
;
430 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P10
;
433 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P12
;
436 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P14
;
439 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P16
;
442 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P
;
445 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P9
;
448 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P10
;
451 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P12
;
454 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P14
;
457 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P16
;
460 avctx
->pix_fmt
= AV_PIX_FMT_YUV411P
;
463 avctx
->pix_fmt
= AV_PIX_FMT_YUV440P
;
466 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P
;
469 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P9
;
472 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P10
;
475 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P12
;
478 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P14
;
481 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P16
;
484 avctx
->pix_fmt
= AV_PIX_FMT_YUV410P
;
487 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P
;
490 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P9
;
493 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P10
;
496 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P16
;
499 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P
;
502 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P9
;
505 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P10
;
508 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P16
;
511 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P
;
514 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P9
;
517 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P10
;
520 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P16
;
523 return AVERROR_INVALIDDATA
;
527 ff_huffyuv_common_init(avctx
);
529 if ((avctx
->pix_fmt
== AV_PIX_FMT_YUV422P
|| avctx
->pix_fmt
== AV_PIX_FMT_YUV420P
) && avctx
->width
& 1) {
530 av_log(avctx
, AV_LOG_ERROR
, "width must be even for this colorspace\n");
531 return AVERROR_INVALIDDATA
;
533 if (s
->predictor
== MEDIAN
&& avctx
->pix_fmt
== AV_PIX_FMT_YUV422P
&&
535 av_log(avctx
, AV_LOG_ERROR
, "width must be a multiple of 4 "
536 "for this combination of colorspace and predictor type.\n");
537 return AVERROR_INVALIDDATA
;
540 if ((ret
= ff_huffyuv_alloc_temp(s
)) < 0) {
541 ff_huffyuv_common_end(s
);
548 static av_cold
int decode_init_thread_copy(AVCodecContext
*avctx
)
550 HYuvContext
*s
= avctx
->priv_data
;
553 if ((ret
= ff_huffyuv_alloc_temp(s
)) < 0) {
554 ff_huffyuv_common_end(s
);
558 for (i
= 0; i
< 8; i
++)
559 s
->vlc
[i
].table
= NULL
;
561 if (s
->version
>= 2) {
562 if ((ret
= read_huffman_tables(s
, avctx
->extradata
+ 4,
563 avctx
->extradata_size
)) < 0)
566 if ((ret
= read_old_huffman_tables(s
)) < 0)
573 /** Subset of GET_VLC for use in hand-roller VLC code */
574 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
575 code = table[index][0]; \
576 n = table[index][1]; \
577 if (max_depth > 1 && n < 0) { \
578 LAST_SKIP_BITS(name, gb, bits); \
579 UPDATE_CACHE(name, gb); \
582 index = SHOW_UBITS(name, gb, nb_bits) + code; \
583 code = table[index][0]; \
584 n = table[index][1]; \
585 if (max_depth > 2 && n < 0) { \
586 LAST_SKIP_BITS(name, gb, nb_bits); \
587 UPDATE_CACHE(name, gb); \
590 index = SHOW_UBITS(name, gb, nb_bits) + code; \
591 code = table[index][0]; \
592 n = table[index][1]; \
596 LAST_SKIP_BITS(name, gb, n)
599 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
600 bits, max_depth, OP) \
602 unsigned int index = SHOW_UBITS(name, gb, bits); \
603 int code, n = dtable[index][1]; \
607 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
609 UPDATE_CACHE(re, gb); \
610 index = SHOW_UBITS(name, gb, bits); \
611 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
613 code = dtable[index][0]; \
614 OP(dst0, dst1, code); \
615 LAST_SKIP_BITS(name, gb, n); \
619 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
621 #define READ_2PIX(dst0, dst1, plane1) \
622 UPDATE_CACHE(re, &s->gb); \
623 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
624 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
626 static void decode_422_bitstream(HYuvContext
*s
, int count
)
629 OPEN_READER(re
, &s
->gb
);
632 icount
= get_bits_left(&s
->gb
) / (32 * 4);
633 if (count
>= icount
) {
634 for (i
= 0; i
< icount
; i
++) {
635 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
636 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
638 for (; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
639 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
640 if (BITS_LEFT(re
, &s
->gb
) <= 0) break;
641 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
643 for (; i
< count
; i
++)
644 s
->temp
[0][2 * i
] = s
->temp
[1][i
] =
645 s
->temp
[0][2 * i
+ 1] = s
->temp
[2][i
] = 0;
647 for (i
= 0; i
< count
; i
++) {
648 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
649 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
652 CLOSE_READER(re
, &s
->gb
);
655 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
656 UPDATE_CACHE(re, &s->gb); \
657 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
658 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
660 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
662 /* TODO instead of restarting the read when the code isn't in the first level
663 * of the joint table, jump into the 2nd level of the individual table. */
664 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
665 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
666 dst0 += get_bits(&s->gb, 2);\
667 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
668 dst1 += get_bits(&s->gb, 2);\
670 static void decode_plane_bitstream(HYuvContext
*s
, int width
, int plane
)
672 int i
, count
= width
/2;
675 OPEN_READER(re
, &s
->gb
);
676 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
677 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
678 READ_2PIX_PLANE(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], plane
, OP8bits
);
681 for(i
=0; i
<count
; i
++){
682 READ_2PIX_PLANE(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], plane
, OP8bits
);
685 if( width
&1 && BITS_LEFT(re
, &s
->gb
)>0 ) {
687 int nb_bits
, code
, n
;
688 UPDATE_CACHE(re
, &s
->gb
);
689 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
690 VLC_INTERN(s
->temp
[0][width
-1], s
->vlc
[plane
].table
,
691 &s
->gb
, re
, VLC_BITS
, 3);
693 CLOSE_READER(re
, &s
->gb
);
694 } else if (s
->bps
<= 14) {
695 OPEN_READER(re
, &s
->gb
);
696 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
697 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
698 READ_2PIX_PLANE(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
, OP14bits
);
701 for(i
=0; i
<count
; i
++){
702 READ_2PIX_PLANE(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
, OP14bits
);
705 if( width
&1 && BITS_LEFT(re
, &s
->gb
)>0 ) {
707 int nb_bits
, code
, n
;
708 UPDATE_CACHE(re
, &s
->gb
);
709 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
710 VLC_INTERN(s
->temp16
[0][width
-1], s
->vlc
[plane
].table
,
711 &s
->gb
, re
, VLC_BITS
, 3);
713 CLOSE_READER(re
, &s
->gb
);
715 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
716 for (i
= 0; i
< count
&& get_bits_left(&s
->gb
) > 0; i
++) {
717 READ_2PIX_PLANE16(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
);
720 for(i
=0; i
<count
; i
++){
721 READ_2PIX_PLANE16(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
);
724 if( width
&1 && get_bits_left(&s
->gb
)>0 ) {
725 int dst
= get_vlc2(&s
->gb
, s
->vlc
[plane
].table
, VLC_BITS
, 3)<<2;
726 s
->temp16
[0][width
-1] = dst
+ get_bits(&s
->gb
, 2);
731 static void decode_gray_bitstream(HYuvContext
*s
, int count
)
734 OPEN_READER(re
, &s
->gb
);
737 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
738 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
739 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], 0);
742 for (i
= 0; i
< count
; i
++) {
743 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], 0);
746 CLOSE_READER(re
, &s
->gb
);
749 static av_always_inline
void decode_bgr_1(HYuvContext
*s
, int count
,
750 int decorrelate
, int alpha
)
753 OPEN_READER(re
, &s
->gb
);
755 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
757 int code
, n
, nb_bits
;
759 UPDATE_CACHE(re
, &s
->gb
);
760 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
761 n
= s
->vlc
[4].table
[index
][1];
764 code
= s
->vlc
[4].table
[index
][0];
765 *(uint32_t *) &s
->temp
[0][4 * i
] = s
->pix_bgr_map
[code
];
766 LAST_SKIP_BITS(re
, &s
->gb
, n
);
769 VLC_INTERN(s
->temp
[0][4 * i
+ G
], s
->vlc
[1].table
,
770 &s
->gb
, re
, VLC_BITS
, 3);
772 UPDATE_CACHE(re
, &s
->gb
);
773 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
774 VLC_INTERN(code
, s
->vlc
[0].table
, &s
->gb
, re
, VLC_BITS
, 3);
775 s
->temp
[0][4 * i
+ B
] = code
+ s
->temp
[0][4 * i
+ G
];
777 UPDATE_CACHE(re
, &s
->gb
);
778 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
779 VLC_INTERN(code
, s
->vlc
[2].table
, &s
->gb
, re
, VLC_BITS
, 3);
780 s
->temp
[0][4 * i
+ R
] = code
+ s
->temp
[0][4 * i
+ G
];
782 VLC_INTERN(s
->temp
[0][4 * i
+ B
], s
->vlc
[0].table
,
783 &s
->gb
, re
, VLC_BITS
, 3);
785 UPDATE_CACHE(re
, &s
->gb
);
786 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
787 VLC_INTERN(s
->temp
[0][4 * i
+ G
], s
->vlc
[1].table
,
788 &s
->gb
, re
, VLC_BITS
, 3);
790 UPDATE_CACHE(re
, &s
->gb
);
791 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
792 VLC_INTERN(s
->temp
[0][4 * i
+ R
], s
->vlc
[2].table
,
793 &s
->gb
, re
, VLC_BITS
, 3);
797 UPDATE_CACHE(re
, &s
->gb
);
798 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
799 VLC_INTERN(s
->temp
[0][4 * i
+ A
], s
->vlc
[2].table
,
800 &s
->gb
, re
, VLC_BITS
, 3);
802 s
->temp
[0][4 * i
+ A
] = 0;
804 CLOSE_READER(re
, &s
->gb
);
807 static void decode_bgr_bitstream(HYuvContext
*s
, int count
)
809 if (s
->decorrelate
) {
810 if (s
->bitstream_bpp
== 24)
811 decode_bgr_1(s
, count
, 1, 0);
813 decode_bgr_1(s
, count
, 1, 1);
815 if (s
->bitstream_bpp
== 24)
816 decode_bgr_1(s
, count
, 0, 0);
818 decode_bgr_1(s
, count
, 0, 1);
822 static void draw_slice(HYuvContext
*s
, AVFrame
*frame
, int y
)
825 int offset
[AV_NUM_DATA_POINTERS
];
827 if (!s
->avctx
->draw_horiz_band
)
830 h
= y
- s
->last_slice_end
;
833 if (s
->bitstream_bpp
== 12)
838 offset
[0] = frame
->linesize
[0] * y
;
839 offset
[1] = frame
->linesize
[1] * cy
;
840 offset
[2] = frame
->linesize
[2] * cy
;
841 for (i
= 3; i
< AV_NUM_DATA_POINTERS
; i
++)
845 s
->avctx
->draw_horiz_band(s
->avctx
, frame
, offset
, y
, 3, h
);
847 s
->last_slice_end
= y
+ h
;
850 static int left_prediction(HYuvContext
*s
, uint8_t *dst
, const uint8_t *src
, int w
, int acc
)
853 return s
->hdsp
.add_hfyu_left_pred(dst
, src
, w
, acc
);
855 return s
->llviddsp
.add_hfyu_left_pred_int16(( uint16_t *)dst
, (const uint16_t *)src
, s
->n
-1, w
, acc
);
859 static void add_bytes(HYuvContext
*s
, uint8_t *dst
, uint8_t *src
, int w
)
862 s
->hdsp
.add_bytes(dst
, src
, w
);
864 s
->llviddsp
.add_int16((uint16_t*)dst
, (const uint16_t*)src
, s
->n
- 1, w
);
868 static void add_median_prediction(HYuvContext
*s
, uint8_t *dst
, const uint8_t *src
, const uint8_t *diff
, int w
, int *left
, int *left_top
)
871 s
->hdsp
.add_hfyu_median_pred(dst
, src
, diff
, w
, left
, left_top
);
873 s
->llviddsp
.add_hfyu_median_pred_int16((uint16_t *)dst
, (const uint16_t *)src
, (const uint16_t *)diff
, s
->n
-1, w
, left
, left_top
);
876 static int decode_frame(AVCodecContext
*avctx
, void *data
, int *got_frame
,
879 const uint8_t *buf
= avpkt
->data
;
880 int buf_size
= avpkt
->size
;
881 HYuvContext
*s
= avctx
->priv_data
;
882 const int width
= s
->width
;
883 const int width2
= s
->width
>> 1;
884 const int height
= s
->height
;
885 int fake_ystride
, fake_ustride
, fake_vstride
;
886 ThreadFrame frame
= { .f
= data
};
887 AVFrame
*const p
= data
;
888 int table_size
= 0, ret
;
890 av_fast_padded_malloc(&s
->bitstream_buffer
,
891 &s
->bitstream_buffer_size
,
893 if (!s
->bitstream_buffer
)
894 return AVERROR(ENOMEM
);
896 s
->bdsp
.bswap_buf((uint32_t *) s
->bitstream_buffer
,
897 (const uint32_t *) buf
, buf_size
/ 4);
899 if ((ret
= ff_thread_get_buffer(avctx
, &frame
, 0)) < 0)
903 table_size
= read_huffman_tables(s
, s
->bitstream_buffer
, buf_size
);
908 if ((unsigned) (buf_size
- table_size
) >= INT_MAX
/ 8)
909 return AVERROR_INVALIDDATA
;
911 if ((ret
= init_get_bits(&s
->gb
, s
->bitstream_buffer
+ table_size
,
912 (buf_size
- table_size
) * 8)) < 0)
915 fake_ystride
= s
->interlaced
? p
->linesize
[0] * 2 : p
->linesize
[0];
916 fake_ustride
= s
->interlaced
? p
->linesize
[1] * 2 : p
->linesize
[1];
917 fake_vstride
= s
->interlaced
? p
->linesize
[2] * 2 : p
->linesize
[2];
919 s
->last_slice_end
= 0;
921 if (s
->version
> 2) {
923 for(plane
= 0; plane
< 1 + 2*s
->chroma
+ s
->alpha
; plane
++) {
924 int left
, lefttop
, y
;
927 int fake_stride
= fake_ystride
;
929 if (s
->chroma
&& (plane
== 1 || plane
== 2)) {
930 w
>>= s
->chroma_h_shift
;
931 h
>>= s
->chroma_v_shift
;
932 fake_stride
= plane
== 1 ? fake_ustride
: fake_vstride
;
935 switch (s
->predictor
) {
938 decode_plane_bitstream(s
, w
, plane
);
939 left
= left_prediction(s
, p
->data
[plane
], s
->temp
[0], w
, 0);
941 for (y
= 1; y
< h
; y
++) {
942 uint8_t *dst
= p
->data
[plane
] + p
->linesize
[plane
]*y
;
944 decode_plane_bitstream(s
, w
, plane
);
945 left
= left_prediction(s
, dst
, s
->temp
[0], w
, left
);
946 if (s
->predictor
== PLANE
) {
947 if (y
> s
->interlaced
) {
948 add_bytes(s
, dst
, dst
- fake_stride
, w
);
955 decode_plane_bitstream(s
, w
, plane
);
956 left
= left_prediction(s
, p
->data
[plane
], s
->temp
[0], w
, 0);
960 /* second line is left predicted for interlaced case */
962 decode_plane_bitstream(s
, w
, plane
);
963 left
= left_prediction(s
, p
->data
[plane
] + p
->linesize
[plane
], s
->temp
[0], w
, left
);
967 lefttop
= p
->data
[plane
][0];
968 decode_plane_bitstream(s
, w
, plane
);
969 add_median_prediction(s
, p
->data
[plane
] + fake_stride
, p
->data
[plane
], s
->temp
[0], w
, &left
, &lefttop
);
975 decode_plane_bitstream(s
, w
, plane
);
977 dst
= p
->data
[plane
] + p
->linesize
[plane
] * y
;
979 add_median_prediction(s
, dst
, dst
- fake_stride
, s
->temp
[0], w
, &left
, &lefttop
);
985 draw_slice(s
, p
, height
);
986 } else if (s
->bitstream_bpp
< 24) {
988 int lefty
, leftu
, leftv
;
989 int lefttopy
, lefttopu
, lefttopv
;
992 p
->data
[0][3] = get_bits(&s
->gb
, 8);
993 p
->data
[0][2] = get_bits(&s
->gb
, 8);
994 p
->data
[0][1] = get_bits(&s
->gb
, 8);
995 p
->data
[0][0] = get_bits(&s
->gb
, 8);
997 av_log(avctx
, AV_LOG_ERROR
,
998 "YUY2 output is not implemented yet\n");
999 return AVERROR_PATCHWELCOME
;
1002 p
->data
[2][0] = get_bits(&s
->gb
, 8);
1004 p
->data
[0][1] = get_bits(&s
->gb
, 8);
1006 p
->data
[1][0] = get_bits(&s
->gb
, 8);
1007 p
->data
[0][0] = get_bits(&s
->gb
, 8);
1009 switch (s
->predictor
) {
1012 decode_422_bitstream(s
, width
- 2);
1013 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + 2, s
->temp
[0],
1015 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1016 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + 1, s
->temp
[1], width2
- 1, leftu
);
1017 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + 1, s
->temp
[2], width2
- 1, leftv
);
1020 for (cy
= y
= 1; y
< s
->height
; y
++, cy
++) {
1021 uint8_t *ydst
, *udst
, *vdst
;
1023 if (s
->bitstream_bpp
== 12) {
1024 decode_gray_bitstream(s
, width
);
1026 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1028 lefty
= s
->hdsp
.add_hfyu_left_pred(ydst
, s
->temp
[0],
1030 if (s
->predictor
== PLANE
) {
1031 if (y
> s
->interlaced
)
1032 s
->hdsp
.add_bytes(ydst
, ydst
- fake_ystride
, width
);
1039 draw_slice(s
, p
, y
);
1041 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1042 udst
= p
->data
[1] + p
->linesize
[1] * cy
;
1043 vdst
= p
->data
[2] + p
->linesize
[2] * cy
;
1045 decode_422_bitstream(s
, width
);
1046 lefty
= s
->hdsp
.add_hfyu_left_pred(ydst
, s
->temp
[0],
1048 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1049 leftu
= s
->hdsp
.add_hfyu_left_pred(udst
, s
->temp
[1], width2
, leftu
);
1050 leftv
= s
->hdsp
.add_hfyu_left_pred(vdst
, s
->temp
[2], width2
, leftv
);
1052 if (s
->predictor
== PLANE
) {
1053 if (cy
> s
->interlaced
) {
1054 s
->hdsp
.add_bytes(ydst
, ydst
- fake_ystride
, width
);
1055 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1056 s
->hdsp
.add_bytes(udst
, udst
- fake_ustride
, width2
);
1057 s
->hdsp
.add_bytes(vdst
, vdst
- fake_vstride
, width2
);
1062 draw_slice(s
, p
, height
);
1066 /* first line except first 2 pixels is left predicted */
1067 decode_422_bitstream(s
, width
- 2);
1068 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + 2, s
->temp
[0],
1070 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1071 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + 1, s
->temp
[1], width2
- 1, leftu
);
1072 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + 1, s
->temp
[2], width2
- 1, leftv
);
1077 /* second line is left predicted for interlaced case */
1078 if (s
->interlaced
) {
1079 decode_422_bitstream(s
, width
);
1080 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + p
->linesize
[0],
1081 s
->temp
[0], width
, lefty
);
1082 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1083 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + p
->linesize
[2], s
->temp
[1], width2
, leftu
);
1084 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + p
->linesize
[1], s
->temp
[2], width2
, leftv
);
1090 /* next 4 pixels are left predicted too */
1091 decode_422_bitstream(s
, 4);
1092 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + fake_ystride
,
1093 s
->temp
[0], 4, lefty
);
1094 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1095 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + fake_ustride
, s
->temp
[1], 2, leftu
);
1096 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + fake_vstride
, s
->temp
[2], 2, leftv
);
1099 /* next line except the first 4 pixels is median predicted */
1100 lefttopy
= p
->data
[0][3];
1101 decode_422_bitstream(s
, width
- 4);
1102 s
->hdsp
.add_hfyu_median_pred(p
->data
[0] + fake_ystride
+ 4,
1103 p
->data
[0] + 4, s
->temp
[0],
1104 width
- 4, &lefty
, &lefttopy
);
1105 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1106 lefttopu
= p
->data
[1][1];
1107 lefttopv
= p
->data
[2][1];
1108 s
->hdsp
.add_hfyu_median_pred(p
->data
[1] + fake_ustride
+ 2, p
->data
[1] + 2, s
->temp
[1], width2
- 2, &leftu
, &lefttopu
);
1109 s
->hdsp
.add_hfyu_median_pred(p
->data
[2] + fake_vstride
+ 2, p
->data
[2] + 2, s
->temp
[2], width2
- 2, &leftv
, &lefttopv
);
1114 for (; y
< height
; y
++, cy
++) {
1115 uint8_t *ydst
, *udst
, *vdst
;
1117 if (s
->bitstream_bpp
== 12) {
1118 while (2 * cy
> y
) {
1119 decode_gray_bitstream(s
, width
);
1120 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1121 s
->hdsp
.add_hfyu_median_pred(ydst
, ydst
- fake_ystride
,
1129 draw_slice(s
, p
, y
);
1131 decode_422_bitstream(s
, width
);
1133 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1134 udst
= p
->data
[1] + p
->linesize
[1] * cy
;
1135 vdst
= p
->data
[2] + p
->linesize
[2] * cy
;
1137 s
->hdsp
.add_hfyu_median_pred(ydst
, ydst
- fake_ystride
,
1140 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1141 s
->hdsp
.add_hfyu_median_pred(udst
, udst
- fake_ustride
, s
->temp
[1], width2
, &leftu
, &lefttopu
);
1142 s
->hdsp
.add_hfyu_median_pred(vdst
, vdst
- fake_vstride
, s
->temp
[2], width2
, &leftv
, &lefttopv
);
1146 draw_slice(s
, p
, height
);
1153 const int last_line
= (height
- 1) * p
->linesize
[0];
1155 if (s
->bitstream_bpp
== 32) {
1156 left
[A
] = p
->data
[0][last_line
+ A
] = get_bits(&s
->gb
, 8);
1157 left
[R
] = p
->data
[0][last_line
+ R
] = get_bits(&s
->gb
, 8);
1158 left
[G
] = p
->data
[0][last_line
+ G
] = get_bits(&s
->gb
, 8);
1159 left
[B
] = p
->data
[0][last_line
+ B
] = get_bits(&s
->gb
, 8);
1161 left
[R
] = p
->data
[0][last_line
+ R
] = get_bits(&s
->gb
, 8);
1162 left
[G
] = p
->data
[0][last_line
+ G
] = get_bits(&s
->gb
, 8);
1163 left
[B
] = p
->data
[0][last_line
+ B
] = get_bits(&s
->gb
, 8);
1164 left
[A
] = p
->data
[0][last_line
+ A
] = 255;
1165 skip_bits(&s
->gb
, 8);
1169 switch (s
->predictor
) {
1172 decode_bgr_bitstream(s
, width
- 1);
1173 s
->hdsp
.add_hfyu_left_pred_bgr32(p
->data
[0] + last_line
+ 4,
1174 s
->temp
[0], width
- 1, left
);
1176 for (y
= s
->height
- 2; y
>= 0; y
--) { // Yes it is stored upside down.
1177 decode_bgr_bitstream(s
, width
);
1179 s
->hdsp
.add_hfyu_left_pred_bgr32(p
->data
[0] + p
->linesize
[0] * y
,
1180 s
->temp
[0], width
, left
);
1181 if (s
->predictor
== PLANE
) {
1182 if (s
->bitstream_bpp
!= 32)
1184 if ((y
& s
->interlaced
) == 0 &&
1185 y
< s
->height
- 1 - s
->interlaced
) {
1186 s
->hdsp
.add_bytes(p
->data
[0] + p
->linesize
[0] * y
,
1187 p
->data
[0] + p
->linesize
[0] * y
+
1188 fake_ystride
, fake_ystride
);
1192 // just 1 large slice as this is not possible in reverse order
1193 draw_slice(s
, p
, height
);
1196 av_log(avctx
, AV_LOG_ERROR
,
1197 "prediction type not supported!\n");
1200 av_log(avctx
, AV_LOG_ERROR
,
1201 "BGR24 output is not implemented yet\n");
1202 return AVERROR_PATCHWELCOME
;
1209 return (get_bits_count(&s
->gb
) + 31) / 32 * 4 + table_size
;
1212 static av_cold
int decode_end(AVCodecContext
*avctx
)
1214 HYuvContext
*s
= avctx
->priv_data
;
1217 ff_huffyuv_common_end(s
);
1218 av_freep(&s
->bitstream_buffer
);
1220 for (i
= 0; i
< 8; i
++)
1221 ff_free_vlc(&s
->vlc
[i
]);
1226 AVCodec ff_huffyuv_decoder
= {
1228 .long_name
= NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1229 .type
= AVMEDIA_TYPE_VIDEO
,
1230 .id
= AV_CODEC_ID_HUFFYUV
,
1231 .priv_data_size
= sizeof(HYuvContext
),
1232 .init
= decode_init
,
1233 .close
= decode_end
,
1234 .decode
= decode_frame
,
1235 .capabilities
= CODEC_CAP_DR1
| CODEC_CAP_DRAW_HORIZ_BAND
|
1236 CODEC_CAP_FRAME_THREADS
,
1237 .init_thread_copy
= ONLY_IF_THREADS_ENABLED(decode_init_thread_copy
),
1240 #if CONFIG_FFVHUFF_DECODER
1241 AVCodec ff_ffvhuff_decoder
= {
1243 .long_name
= NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1244 .type
= AVMEDIA_TYPE_VIDEO
,
1245 .id
= AV_CODEC_ID_FFVHUFF
,
1246 .priv_data_size
= sizeof(HYuvContext
),
1247 .init
= decode_init
,
1248 .close
= decode_end
,
1249 .decode
= decode_frame
,
1250 .capabilities
= CODEC_CAP_DR1
| CODEC_CAP_DRAW_HORIZ_BAND
|
1251 CODEC_CAP_FRAME_THREADS
,
1252 .init_thread_copy
= ONLY_IF_THREADS_ENABLED(decode_init_thread_copy
),
1254 #endif /* CONFIG_FFVHUFF_DECODER */