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_end(AVCodecContext
*avctx
)
277 HYuvContext
*s
= avctx
->priv_data
;
280 ff_huffyuv_common_end(s
);
281 av_freep(&s
->bitstream_buffer
);
283 for (i
= 0; i
< 8; i
++)
284 ff_free_vlc(&s
->vlc
[i
]);
289 static av_cold
int decode_init(AVCodecContext
*avctx
)
291 HYuvContext
*s
= avctx
->priv_data
;
294 ff_huffyuvdsp_init(&s
->hdsp
);
295 memset(s
->vlc
, 0, 4 * sizeof(VLC
));
297 s
->interlaced
= avctx
->height
> 288;
300 if (avctx
->extradata_size
) {
301 if ((avctx
->bits_per_coded_sample
& 7) &&
302 avctx
->bits_per_coded_sample
!= 12)
303 s
->version
= 1; // do such files exist at all?
304 else if (avctx
->extradata_size
> 3 && avctx
->extradata
[3] == 0)
313 s
->vlc_n
= FFMIN(s
->n
, MAX_VLC_N
);
315 if (s
->version
>= 2) {
316 int method
, interlace
;
318 if (avctx
->extradata_size
< 4)
319 return AVERROR_INVALIDDATA
;
321 method
= avctx
->extradata
[0];
322 s
->decorrelate
= method
& 64 ? 1 : 0;
323 s
->predictor
= method
& 63;
324 if (s
->version
== 2) {
325 s
->bitstream_bpp
= avctx
->extradata
[1];
326 if (s
->bitstream_bpp
== 0)
327 s
->bitstream_bpp
= avctx
->bits_per_coded_sample
& ~7;
329 s
->bps
= (avctx
->extradata
[1] >> 4) + 1;
331 s
->vlc_n
= FFMIN(s
->n
, MAX_VLC_N
);
332 s
->chroma_h_shift
= avctx
->extradata
[1] & 3;
333 s
->chroma_v_shift
= (avctx
->extradata
[1] >> 2) & 3;
334 s
->yuv
= !!(avctx
->extradata
[2] & 1);
335 s
->chroma
= !!(avctx
->extradata
[2] & 3);
336 s
->alpha
= !!(avctx
->extradata
[2] & 4);
338 interlace
= (avctx
->extradata
[2] & 0x30) >> 4;
339 s
->interlaced
= (interlace
== 1) ? 1 : (interlace
== 2) ? 0 : s
->interlaced
;
340 s
->context
= avctx
->extradata
[2] & 0x40 ? 1 : 0;
342 if ((ret
= read_huffman_tables(s
, avctx
->extradata
+ 4,
343 avctx
->extradata_size
- 4)) < 0)
346 switch (avctx
->bits_per_coded_sample
& 7) {
356 s
->predictor
= PLANE
;
357 s
->decorrelate
= avctx
->bits_per_coded_sample
>= 24;
360 s
->predictor
= MEDIAN
;
364 s
->predictor
= LEFT
; // OLD
368 s
->bitstream_bpp
= avctx
->bits_per_coded_sample
& ~7;
371 if ((ret
= read_old_huffman_tables(s
)) < 0)
375 if (s
->version
<= 2) {
376 switch (s
->bitstream_bpp
) {
378 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P
;
383 avctx
->pix_fmt
= AV_PIX_FMT_YUYV422
;
385 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P
;
390 avctx
->pix_fmt
= AV_PIX_FMT_0RGB32
;
392 avctx
->pix_fmt
= AV_PIX_FMT_BGR24
;
395 av_assert0(s
->bgr32
);
396 avctx
->pix_fmt
= AV_PIX_FMT_RGB32
;
400 ret
= AVERROR_INVALIDDATA
;
403 av_pix_fmt_get_chroma_sub_sample(avctx
->pix_fmt
,
407 switch ( (s
->chroma
<<10) | (s
->yuv
<<9) | (s
->alpha
<<8) | ((s
->bps
-1)<<4) | s
->chroma_h_shift
| (s
->chroma_v_shift
<<2)) {
409 avctx
->pix_fmt
= AV_PIX_FMT_GRAY8
;
412 avctx
->pix_fmt
= AV_PIX_FMT_GRAY16
;
415 avctx
->pix_fmt
= AV_PIX_FMT_GRAY8A
;
418 avctx
->pix_fmt
= AV_PIX_FMT_GBRP
;
421 avctx
->pix_fmt
= AV_PIX_FMT_GBRP9
;
424 avctx
->pix_fmt
= AV_PIX_FMT_GBRP10
;
427 avctx
->pix_fmt
= AV_PIX_FMT_GBRP12
;
430 avctx
->pix_fmt
= AV_PIX_FMT_GBRP14
;
433 avctx
->pix_fmt
= AV_PIX_FMT_GBRP16
;
436 avctx
->pix_fmt
= AV_PIX_FMT_GBRAP
;
439 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P
;
442 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P9
;
445 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P10
;
448 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P12
;
451 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P14
;
454 avctx
->pix_fmt
= AV_PIX_FMT_YUV444P16
;
457 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P
;
460 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P9
;
463 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P10
;
466 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P12
;
469 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P14
;
472 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P16
;
475 avctx
->pix_fmt
= AV_PIX_FMT_YUV411P
;
478 avctx
->pix_fmt
= AV_PIX_FMT_YUV440P
;
481 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P
;
484 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P9
;
487 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P10
;
490 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P12
;
493 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P14
;
496 avctx
->pix_fmt
= AV_PIX_FMT_YUV420P16
;
499 avctx
->pix_fmt
= AV_PIX_FMT_YUV410P
;
502 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P
;
505 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P9
;
508 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P10
;
511 avctx
->pix_fmt
= AV_PIX_FMT_YUVA444P16
;
514 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P
;
517 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P9
;
520 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P10
;
523 avctx
->pix_fmt
= AV_PIX_FMT_YUVA422P16
;
526 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P
;
529 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P9
;
532 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P10
;
535 avctx
->pix_fmt
= AV_PIX_FMT_YUVA420P16
;
538 ret
= AVERROR_INVALIDDATA
;
543 ff_huffyuv_common_init(avctx
);
545 if ((avctx
->pix_fmt
== AV_PIX_FMT_YUV422P
|| avctx
->pix_fmt
== AV_PIX_FMT_YUV420P
) && avctx
->width
& 1) {
546 av_log(avctx
, AV_LOG_ERROR
, "width must be even for this colorspace\n");
547 ret
= AVERROR_INVALIDDATA
;
550 if (s
->predictor
== MEDIAN
&& avctx
->pix_fmt
== AV_PIX_FMT_YUV422P
&&
552 av_log(avctx
, AV_LOG_ERROR
, "width must be a multiple of 4 "
553 "for this combination of colorspace and predictor type.\n");
554 ret
= AVERROR_INVALIDDATA
;
558 if ((ret
= ff_huffyuv_alloc_temp(s
)) < 0) {
559 ff_huffyuv_common_end(s
);
569 static av_cold
int decode_init_thread_copy(AVCodecContext
*avctx
)
571 HYuvContext
*s
= avctx
->priv_data
;
574 if ((ret
= ff_huffyuv_alloc_temp(s
)) < 0) {
575 ff_huffyuv_common_end(s
);
579 for (i
= 0; i
< 8; i
++)
580 s
->vlc
[i
].table
= NULL
;
582 if (s
->version
>= 2) {
583 if ((ret
= read_huffman_tables(s
, avctx
->extradata
+ 4,
584 avctx
->extradata_size
)) < 0)
587 if ((ret
= read_old_huffman_tables(s
)) < 0)
594 /** Subset of GET_VLC for use in hand-roller VLC code */
595 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
596 code = table[index][0]; \
597 n = table[index][1]; \
598 if (max_depth > 1 && n < 0) { \
599 LAST_SKIP_BITS(name, gb, bits); \
600 UPDATE_CACHE(name, gb); \
603 index = SHOW_UBITS(name, gb, nb_bits) + code; \
604 code = table[index][0]; \
605 n = table[index][1]; \
606 if (max_depth > 2 && n < 0) { \
607 LAST_SKIP_BITS(name, gb, nb_bits); \
608 UPDATE_CACHE(name, gb); \
611 index = SHOW_UBITS(name, gb, nb_bits) + code; \
612 code = table[index][0]; \
613 n = table[index][1]; \
617 LAST_SKIP_BITS(name, gb, n)
620 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
621 bits, max_depth, OP) \
623 unsigned int index = SHOW_UBITS(name, gb, bits); \
624 int code, n = dtable[index][1]; \
628 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
630 UPDATE_CACHE(re, gb); \
631 index = SHOW_UBITS(name, gb, bits); \
632 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
634 code = dtable[index][0]; \
635 OP(dst0, dst1, code); \
636 LAST_SKIP_BITS(name, gb, n); \
640 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
642 #define READ_2PIX(dst0, dst1, plane1) \
643 UPDATE_CACHE(re, &s->gb); \
644 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
645 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
647 static void decode_422_bitstream(HYuvContext
*s
, int count
)
650 OPEN_READER(re
, &s
->gb
);
653 icount
= get_bits_left(&s
->gb
) / (32 * 4);
654 if (count
>= icount
) {
655 for (i
= 0; i
< icount
; i
++) {
656 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
657 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
659 for (; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
660 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
661 if (BITS_LEFT(re
, &s
->gb
) <= 0) break;
662 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
664 for (; i
< count
; i
++)
665 s
->temp
[0][2 * i
] = s
->temp
[1][i
] =
666 s
->temp
[0][2 * i
+ 1] = s
->temp
[2][i
] = 0;
668 for (i
= 0; i
< count
; i
++) {
669 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[1][i
], 1);
670 READ_2PIX(s
->temp
[0][2 * i
+ 1], s
->temp
[2][i
], 2);
673 CLOSE_READER(re
, &s
->gb
);
676 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
677 UPDATE_CACHE(re, &s->gb); \
678 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
679 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
681 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
683 /* TODO instead of restarting the read when the code isn't in the first level
684 * of the joint table, jump into the 2nd level of the individual table. */
685 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
686 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
687 dst0 += get_bits(&s->gb, 2);\
688 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
689 dst1 += get_bits(&s->gb, 2);\
691 static void decode_plane_bitstream(HYuvContext
*s
, int width
, int plane
)
693 int i
, count
= width
/2;
696 OPEN_READER(re
, &s
->gb
);
697 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
698 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
699 READ_2PIX_PLANE(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], plane
, OP8bits
);
702 for(i
=0; i
<count
; i
++){
703 READ_2PIX_PLANE(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], plane
, OP8bits
);
706 if( width
&1 && BITS_LEFT(re
, &s
->gb
)>0 ) {
708 int nb_bits
, code
, n
;
709 UPDATE_CACHE(re
, &s
->gb
);
710 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
711 VLC_INTERN(s
->temp
[0][width
-1], s
->vlc
[plane
].table
,
712 &s
->gb
, re
, VLC_BITS
, 3);
714 CLOSE_READER(re
, &s
->gb
);
715 } else if (s
->bps
<= 14) {
716 OPEN_READER(re
, &s
->gb
);
717 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
718 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
719 READ_2PIX_PLANE(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
, OP14bits
);
722 for(i
=0; i
<count
; i
++){
723 READ_2PIX_PLANE(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
, OP14bits
);
726 if( width
&1 && BITS_LEFT(re
, &s
->gb
)>0 ) {
728 int nb_bits
, code
, n
;
729 UPDATE_CACHE(re
, &s
->gb
);
730 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
731 VLC_INTERN(s
->temp16
[0][width
-1], s
->vlc
[plane
].table
,
732 &s
->gb
, re
, VLC_BITS
, 3);
734 CLOSE_READER(re
, &s
->gb
);
736 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
737 for (i
= 0; i
< count
&& get_bits_left(&s
->gb
) > 0; i
++) {
738 READ_2PIX_PLANE16(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
);
741 for(i
=0; i
<count
; i
++){
742 READ_2PIX_PLANE16(s
->temp16
[0][2 * i
], s
->temp16
[0][2 * i
+ 1], plane
);
745 if( width
&1 && get_bits_left(&s
->gb
)>0 ) {
746 int dst
= get_vlc2(&s
->gb
, s
->vlc
[plane
].table
, VLC_BITS
, 3)<<2;
747 s
->temp16
[0][width
-1] = dst
+ get_bits(&s
->gb
, 2);
752 static void decode_gray_bitstream(HYuvContext
*s
, int count
)
755 OPEN_READER(re
, &s
->gb
);
758 if (count
>= (get_bits_left(&s
->gb
)) / (32 * 2)) {
759 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
760 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], 0);
763 for (i
= 0; i
< count
; i
++) {
764 READ_2PIX(s
->temp
[0][2 * i
], s
->temp
[0][2 * i
+ 1], 0);
767 CLOSE_READER(re
, &s
->gb
);
770 static av_always_inline
void decode_bgr_1(HYuvContext
*s
, int count
,
771 int decorrelate
, int alpha
)
774 OPEN_READER(re
, &s
->gb
);
776 for (i
= 0; i
< count
&& BITS_LEFT(re
, &s
->gb
) > 0; i
++) {
778 int code
, n
, nb_bits
;
780 UPDATE_CACHE(re
, &s
->gb
);
781 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
782 n
= s
->vlc
[4].table
[index
][1];
785 code
= s
->vlc
[4].table
[index
][0];
786 *(uint32_t *) &s
->temp
[0][4 * i
] = s
->pix_bgr_map
[code
];
787 LAST_SKIP_BITS(re
, &s
->gb
, n
);
790 VLC_INTERN(s
->temp
[0][4 * i
+ G
], s
->vlc
[1].table
,
791 &s
->gb
, re
, VLC_BITS
, 3);
793 UPDATE_CACHE(re
, &s
->gb
);
794 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
795 VLC_INTERN(code
, s
->vlc
[0].table
, &s
->gb
, re
, VLC_BITS
, 3);
796 s
->temp
[0][4 * i
+ B
] = code
+ s
->temp
[0][4 * i
+ G
];
798 UPDATE_CACHE(re
, &s
->gb
);
799 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
800 VLC_INTERN(code
, s
->vlc
[2].table
, &s
->gb
, re
, VLC_BITS
, 3);
801 s
->temp
[0][4 * i
+ R
] = code
+ s
->temp
[0][4 * i
+ G
];
803 VLC_INTERN(s
->temp
[0][4 * i
+ B
], s
->vlc
[0].table
,
804 &s
->gb
, re
, VLC_BITS
, 3);
806 UPDATE_CACHE(re
, &s
->gb
);
807 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
808 VLC_INTERN(s
->temp
[0][4 * i
+ G
], s
->vlc
[1].table
,
809 &s
->gb
, re
, VLC_BITS
, 3);
811 UPDATE_CACHE(re
, &s
->gb
);
812 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
813 VLC_INTERN(s
->temp
[0][4 * i
+ R
], s
->vlc
[2].table
,
814 &s
->gb
, re
, VLC_BITS
, 3);
818 UPDATE_CACHE(re
, &s
->gb
);
819 index
= SHOW_UBITS(re
, &s
->gb
, VLC_BITS
);
820 VLC_INTERN(s
->temp
[0][4 * i
+ A
], s
->vlc
[2].table
,
821 &s
->gb
, re
, VLC_BITS
, 3);
823 s
->temp
[0][4 * i
+ A
] = 0;
825 CLOSE_READER(re
, &s
->gb
);
828 static void decode_bgr_bitstream(HYuvContext
*s
, int count
)
830 if (s
->decorrelate
) {
831 if (s
->bitstream_bpp
== 24)
832 decode_bgr_1(s
, count
, 1, 0);
834 decode_bgr_1(s
, count
, 1, 1);
836 if (s
->bitstream_bpp
== 24)
837 decode_bgr_1(s
, count
, 0, 0);
839 decode_bgr_1(s
, count
, 0, 1);
843 static void draw_slice(HYuvContext
*s
, AVFrame
*frame
, int y
)
846 int offset
[AV_NUM_DATA_POINTERS
];
848 if (!s
->avctx
->draw_horiz_band
)
851 h
= y
- s
->last_slice_end
;
854 if (s
->bitstream_bpp
== 12)
859 offset
[0] = frame
->linesize
[0] * y
;
860 offset
[1] = frame
->linesize
[1] * cy
;
861 offset
[2] = frame
->linesize
[2] * cy
;
862 for (i
= 3; i
< AV_NUM_DATA_POINTERS
; i
++)
866 s
->avctx
->draw_horiz_band(s
->avctx
, frame
, offset
, y
, 3, h
);
868 s
->last_slice_end
= y
+ h
;
871 static int left_prediction(HYuvContext
*s
, uint8_t *dst
, const uint8_t *src
, int w
, int acc
)
874 return s
->hdsp
.add_hfyu_left_pred(dst
, src
, w
, acc
);
876 return s
->llviddsp
.add_hfyu_left_pred_int16(( uint16_t *)dst
, (const uint16_t *)src
, s
->n
-1, w
, acc
);
880 static void add_bytes(HYuvContext
*s
, uint8_t *dst
, uint8_t *src
, int w
)
883 s
->hdsp
.add_bytes(dst
, src
, w
);
885 s
->llviddsp
.add_int16((uint16_t*)dst
, (const uint16_t*)src
, s
->n
- 1, w
);
889 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
)
892 s
->hdsp
.add_hfyu_median_pred(dst
, src
, diff
, w
, left
, left_top
);
894 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
);
897 static int decode_frame(AVCodecContext
*avctx
, void *data
, int *got_frame
,
900 const uint8_t *buf
= avpkt
->data
;
901 int buf_size
= avpkt
->size
;
902 HYuvContext
*s
= avctx
->priv_data
;
903 const int width
= s
->width
;
904 const int width2
= s
->width
>> 1;
905 const int height
= s
->height
;
906 int fake_ystride
, fake_ustride
, fake_vstride
;
907 ThreadFrame frame
= { .f
= data
};
908 AVFrame
*const p
= data
;
909 int table_size
= 0, ret
;
911 av_fast_padded_malloc(&s
->bitstream_buffer
,
912 &s
->bitstream_buffer_size
,
914 if (!s
->bitstream_buffer
)
915 return AVERROR(ENOMEM
);
917 s
->bdsp
.bswap_buf((uint32_t *) s
->bitstream_buffer
,
918 (const uint32_t *) buf
, buf_size
/ 4);
920 if ((ret
= ff_thread_get_buffer(avctx
, &frame
, 0)) < 0)
924 table_size
= read_huffman_tables(s
, s
->bitstream_buffer
, buf_size
);
929 if ((unsigned) (buf_size
- table_size
) >= INT_MAX
/ 8)
930 return AVERROR_INVALIDDATA
;
932 if ((ret
= init_get_bits(&s
->gb
, s
->bitstream_buffer
+ table_size
,
933 (buf_size
- table_size
) * 8)) < 0)
936 fake_ystride
= s
->interlaced
? p
->linesize
[0] * 2 : p
->linesize
[0];
937 fake_ustride
= s
->interlaced
? p
->linesize
[1] * 2 : p
->linesize
[1];
938 fake_vstride
= s
->interlaced
? p
->linesize
[2] * 2 : p
->linesize
[2];
940 s
->last_slice_end
= 0;
942 if (s
->version
> 2) {
944 for(plane
= 0; plane
< 1 + 2*s
->chroma
+ s
->alpha
; plane
++) {
945 int left
, lefttop
, y
;
948 int fake_stride
= fake_ystride
;
950 if (s
->chroma
&& (plane
== 1 || plane
== 2)) {
951 w
>>= s
->chroma_h_shift
;
952 h
>>= s
->chroma_v_shift
;
953 fake_stride
= plane
== 1 ? fake_ustride
: fake_vstride
;
956 switch (s
->predictor
) {
959 decode_plane_bitstream(s
, w
, plane
);
960 left
= left_prediction(s
, p
->data
[plane
], s
->temp
[0], w
, 0);
962 for (y
= 1; y
< h
; y
++) {
963 uint8_t *dst
= p
->data
[plane
] + p
->linesize
[plane
]*y
;
965 decode_plane_bitstream(s
, w
, plane
);
966 left
= left_prediction(s
, dst
, s
->temp
[0], w
, left
);
967 if (s
->predictor
== PLANE
) {
968 if (y
> s
->interlaced
) {
969 add_bytes(s
, dst
, dst
- fake_stride
, w
);
976 decode_plane_bitstream(s
, w
, plane
);
977 left
= left_prediction(s
, p
->data
[plane
], s
->temp
[0], w
, 0);
981 /* second line is left predicted for interlaced case */
983 decode_plane_bitstream(s
, w
, plane
);
984 left
= left_prediction(s
, p
->data
[plane
] + p
->linesize
[plane
], s
->temp
[0], w
, left
);
988 lefttop
= p
->data
[plane
][0];
989 decode_plane_bitstream(s
, w
, plane
);
990 add_median_prediction(s
, p
->data
[plane
] + fake_stride
, p
->data
[plane
], s
->temp
[0], w
, &left
, &lefttop
);
996 decode_plane_bitstream(s
, w
, plane
);
998 dst
= p
->data
[plane
] + p
->linesize
[plane
] * y
;
1000 add_median_prediction(s
, dst
, dst
- fake_stride
, s
->temp
[0], w
, &left
, &lefttop
);
1006 draw_slice(s
, p
, height
);
1007 } else if (s
->bitstream_bpp
< 24) {
1009 int lefty
, leftu
, leftv
;
1010 int lefttopy
, lefttopu
, lefttopv
;
1013 p
->data
[0][3] = get_bits(&s
->gb
, 8);
1014 p
->data
[0][2] = get_bits(&s
->gb
, 8);
1015 p
->data
[0][1] = get_bits(&s
->gb
, 8);
1016 p
->data
[0][0] = get_bits(&s
->gb
, 8);
1018 av_log(avctx
, AV_LOG_ERROR
,
1019 "YUY2 output is not implemented yet\n");
1020 return AVERROR_PATCHWELCOME
;
1023 p
->data
[2][0] = get_bits(&s
->gb
, 8);
1025 p
->data
[0][1] = get_bits(&s
->gb
, 8);
1027 p
->data
[1][0] = get_bits(&s
->gb
, 8);
1028 p
->data
[0][0] = get_bits(&s
->gb
, 8);
1030 switch (s
->predictor
) {
1033 decode_422_bitstream(s
, width
- 2);
1034 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + 2, s
->temp
[0],
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
);
1041 for (cy
= y
= 1; y
< s
->height
; y
++, cy
++) {
1042 uint8_t *ydst
, *udst
, *vdst
;
1044 if (s
->bitstream_bpp
== 12) {
1045 decode_gray_bitstream(s
, width
);
1047 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1049 lefty
= s
->hdsp
.add_hfyu_left_pred(ydst
, s
->temp
[0],
1051 if (s
->predictor
== PLANE
) {
1052 if (y
> s
->interlaced
)
1053 s
->hdsp
.add_bytes(ydst
, ydst
- fake_ystride
, width
);
1060 draw_slice(s
, p
, y
);
1062 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1063 udst
= p
->data
[1] + p
->linesize
[1] * cy
;
1064 vdst
= p
->data
[2] + p
->linesize
[2] * cy
;
1066 decode_422_bitstream(s
, width
);
1067 lefty
= s
->hdsp
.add_hfyu_left_pred(ydst
, s
->temp
[0],
1069 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1070 leftu
= s
->hdsp
.add_hfyu_left_pred(udst
, s
->temp
[1], width2
, leftu
);
1071 leftv
= s
->hdsp
.add_hfyu_left_pred(vdst
, s
->temp
[2], width2
, leftv
);
1073 if (s
->predictor
== PLANE
) {
1074 if (cy
> s
->interlaced
) {
1075 s
->hdsp
.add_bytes(ydst
, ydst
- fake_ystride
, width
);
1076 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1077 s
->hdsp
.add_bytes(udst
, udst
- fake_ustride
, width2
);
1078 s
->hdsp
.add_bytes(vdst
, vdst
- fake_vstride
, width2
);
1083 draw_slice(s
, p
, height
);
1087 /* first line except first 2 pixels is left predicted */
1088 decode_422_bitstream(s
, width
- 2);
1089 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + 2, s
->temp
[0],
1091 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1092 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + 1, s
->temp
[1], width2
- 1, leftu
);
1093 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + 1, s
->temp
[2], width2
- 1, leftv
);
1098 /* second line is left predicted for interlaced case */
1099 if (s
->interlaced
) {
1100 decode_422_bitstream(s
, width
);
1101 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + p
->linesize
[0],
1102 s
->temp
[0], width
, lefty
);
1103 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1104 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + p
->linesize
[2], s
->temp
[1], width2
, leftu
);
1105 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + p
->linesize
[1], s
->temp
[2], width2
, leftv
);
1111 /* next 4 pixels are left predicted too */
1112 decode_422_bitstream(s
, 4);
1113 lefty
= s
->hdsp
.add_hfyu_left_pred(p
->data
[0] + fake_ystride
,
1114 s
->temp
[0], 4, lefty
);
1115 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1116 leftu
= s
->hdsp
.add_hfyu_left_pred(p
->data
[1] + fake_ustride
, s
->temp
[1], 2, leftu
);
1117 leftv
= s
->hdsp
.add_hfyu_left_pred(p
->data
[2] + fake_vstride
, s
->temp
[2], 2, leftv
);
1120 /* next line except the first 4 pixels is median predicted */
1121 lefttopy
= p
->data
[0][3];
1122 decode_422_bitstream(s
, width
- 4);
1123 s
->hdsp
.add_hfyu_median_pred(p
->data
[0] + fake_ystride
+ 4,
1124 p
->data
[0] + 4, s
->temp
[0],
1125 width
- 4, &lefty
, &lefttopy
);
1126 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1127 lefttopu
= p
->data
[1][1];
1128 lefttopv
= p
->data
[2][1];
1129 s
->hdsp
.add_hfyu_median_pred(p
->data
[1] + fake_ustride
+ 2, p
->data
[1] + 2, s
->temp
[1], width2
- 2, &leftu
, &lefttopu
);
1130 s
->hdsp
.add_hfyu_median_pred(p
->data
[2] + fake_vstride
+ 2, p
->data
[2] + 2, s
->temp
[2], width2
- 2, &leftv
, &lefttopv
);
1135 for (; y
< height
; y
++, cy
++) {
1136 uint8_t *ydst
, *udst
, *vdst
;
1138 if (s
->bitstream_bpp
== 12) {
1139 while (2 * cy
> y
) {
1140 decode_gray_bitstream(s
, width
);
1141 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1142 s
->hdsp
.add_hfyu_median_pred(ydst
, ydst
- fake_ystride
,
1150 draw_slice(s
, p
, y
);
1152 decode_422_bitstream(s
, width
);
1154 ydst
= p
->data
[0] + p
->linesize
[0] * y
;
1155 udst
= p
->data
[1] + p
->linesize
[1] * cy
;
1156 vdst
= p
->data
[2] + p
->linesize
[2] * cy
;
1158 s
->hdsp
.add_hfyu_median_pred(ydst
, ydst
- fake_ystride
,
1161 if (!(s
->flags
& CODEC_FLAG_GRAY
)) {
1162 s
->hdsp
.add_hfyu_median_pred(udst
, udst
- fake_ustride
, s
->temp
[1], width2
, &leftu
, &lefttopu
);
1163 s
->hdsp
.add_hfyu_median_pred(vdst
, vdst
- fake_vstride
, s
->temp
[2], width2
, &leftv
, &lefttopv
);
1167 draw_slice(s
, p
, height
);
1174 const int last_line
= (height
- 1) * p
->linesize
[0];
1176 if (s
->bitstream_bpp
== 32) {
1177 left
[A
] = p
->data
[0][last_line
+ A
] = get_bits(&s
->gb
, 8);
1178 left
[R
] = p
->data
[0][last_line
+ R
] = get_bits(&s
->gb
, 8);
1179 left
[G
] = p
->data
[0][last_line
+ G
] = get_bits(&s
->gb
, 8);
1180 left
[B
] = p
->data
[0][last_line
+ B
] = get_bits(&s
->gb
, 8);
1182 left
[R
] = p
->data
[0][last_line
+ R
] = get_bits(&s
->gb
, 8);
1183 left
[G
] = p
->data
[0][last_line
+ G
] = get_bits(&s
->gb
, 8);
1184 left
[B
] = p
->data
[0][last_line
+ B
] = get_bits(&s
->gb
, 8);
1185 left
[A
] = p
->data
[0][last_line
+ A
] = 255;
1186 skip_bits(&s
->gb
, 8);
1190 switch (s
->predictor
) {
1193 decode_bgr_bitstream(s
, width
- 1);
1194 s
->hdsp
.add_hfyu_left_pred_bgr32(p
->data
[0] + last_line
+ 4,
1195 s
->temp
[0], width
- 1, left
);
1197 for (y
= s
->height
- 2; y
>= 0; y
--) { // Yes it is stored upside down.
1198 decode_bgr_bitstream(s
, width
);
1200 s
->hdsp
.add_hfyu_left_pred_bgr32(p
->data
[0] + p
->linesize
[0] * y
,
1201 s
->temp
[0], width
, left
);
1202 if (s
->predictor
== PLANE
) {
1203 if (s
->bitstream_bpp
!= 32)
1205 if (y
< s
->height
- 1 - s
->interlaced
) {
1206 s
->hdsp
.add_bytes(p
->data
[0] + p
->linesize
[0] * y
,
1207 p
->data
[0] + p
->linesize
[0] * y
+
1208 fake_ystride
, 4 * width
);
1212 // just 1 large slice as this is not possible in reverse order
1213 draw_slice(s
, p
, height
);
1216 av_log(avctx
, AV_LOG_ERROR
,
1217 "prediction type not supported!\n");
1220 av_log(avctx
, AV_LOG_ERROR
,
1221 "BGR24 output is not implemented yet\n");
1222 return AVERROR_PATCHWELCOME
;
1229 return (get_bits_count(&s
->gb
) + 31) / 32 * 4 + table_size
;
1232 AVCodec ff_huffyuv_decoder
= {
1234 .long_name
= NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
1235 .type
= AVMEDIA_TYPE_VIDEO
,
1236 .id
= AV_CODEC_ID_HUFFYUV
,
1237 .priv_data_size
= sizeof(HYuvContext
),
1238 .init
= decode_init
,
1239 .close
= decode_end
,
1240 .decode
= decode_frame
,
1241 .capabilities
= CODEC_CAP_DR1
| CODEC_CAP_DRAW_HORIZ_BAND
|
1242 CODEC_CAP_FRAME_THREADS
,
1243 .init_thread_copy
= ONLY_IF_THREADS_ENABLED(decode_init_thread_copy
),
1246 #if CONFIG_FFVHUFF_DECODER
1247 AVCodec ff_ffvhuff_decoder
= {
1249 .long_name
= NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
1250 .type
= AVMEDIA_TYPE_VIDEO
,
1251 .id
= AV_CODEC_ID_FFVHUFF
,
1252 .priv_data_size
= sizeof(HYuvContext
),
1253 .init
= decode_init
,
1254 .close
= decode_end
,
1255 .decode
= decode_frame
,
1256 .capabilities
= CODEC_CAP_DR1
| CODEC_CAP_DRAW_HORIZ_BAND
|
1257 CODEC_CAP_FRAME_THREADS
,
1258 .init_thread_copy
= ONLY_IF_THREADS_ENABLED(decode_init_thread_copy
),
1260 #endif /* CONFIG_FFVHUFF_DECODER */