GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/tiffenc.c Lines: 130 265 49.1 %
Date: 2020-10-23 17:01:47 Branches: 56 172 32.6 %

Line Branch Exec Source
1
/*
2
 * TIFF image encoder
3
 * Copyright (c) 2007 Bartlomiej Wolowiec
4
 *
5
 * This file is part of FFmpeg.
6
 *
7
 * FFmpeg is free software; you can redistribute it and/or
8
 * modify it under the terms of the GNU Lesser General Public
9
 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
11
 *
12
 * FFmpeg is distributed in the hope that it will be useful,
13
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15
 * Lesser General Public License for more details.
16
 *
17
 * You should have received a copy of the GNU Lesser General Public
18
 * License along with FFmpeg; if not, write to the Free Software
19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20
 */
21
22
/**
23
 * @file
24
 * TIFF image encoder
25
 * @author Bartlomiej Wolowiec
26
 */
27
28
#include "config.h"
29
#if CONFIG_ZLIB
30
#include <zlib.h>
31
#endif
32
33
#include "libavutil/imgutils.h"
34
#include "libavutil/log.h"
35
#include "libavutil/opt.h"
36
#include "libavutil/pixdesc.h"
37
#include "avcodec.h"
38
#include "bytestream.h"
39
#include "internal.h"
40
#include "lzw.h"
41
#include "put_bits.h"
42
#include "rle.h"
43
#include "tiff.h"
44
45
#define TIFF_MAX_ENTRY 32
46
47
/** sizes of various TIFF field types (string size = 1)*/
48
static const uint8_t type_sizes2[14] = {
49
    0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 4
50
};
51
52
typedef struct TiffEncoderContext {
53
    AVClass *class;                         ///< for private options
54
    AVCodecContext *avctx;
55
56
    int width;                              ///< picture width
57
    int height;                             ///< picture height
58
    unsigned int bpp;                       ///< bits per pixel
59
    int compr;                              ///< compression level
60
    int bpp_tab_size;                       ///< bpp_tab size
61
    enum TiffPhotometric photometric_interpretation;  ///< photometric interpretation
62
    int strips;                             ///< number of strips
63
    uint32_t *strip_sizes;
64
    unsigned int strip_sizes_size;
65
    uint32_t *strip_offsets;
66
    unsigned int strip_offsets_size;
67
    uint8_t *yuv_line;
68
    unsigned int yuv_line_size;
69
    int rps;                                ///< row per strip
70
    uint8_t entries[TIFF_MAX_ENTRY * 12];   ///< entries in header
71
    int num_entries;                        ///< number of entries
72
    uint8_t **buf;                          ///< actual position in buffer
73
    uint8_t *buf_start;                     ///< pointer to first byte in buffer
74
    int buf_size;                           ///< buffer size
75
    uint16_t subsampling[2];                ///< YUV subsampling factors
76
    struct LZWEncodeState *lzws;            ///< LZW encode state
77
    uint32_t dpi;                           ///< image resolution in DPI
78
} TiffEncoderContext;
79
80
/**
81
 * Check free space in buffer.
82
 *
83
 * @param s Tiff context
84
 * @param need Needed bytes
85
 * @return 0 - ok, 1 - no free space
86
 */
87
91
static inline int check_size(TiffEncoderContext *s, uint64_t need)
88
{
89
91
    if (s->buf_size < *s->buf - s->buf_start + need) {
90
        *s->buf = s->buf_start + s->buf_size + 1;
91
        av_log(s->avctx, AV_LOG_ERROR, "Buffer is too small\n");
92
        return 1;
93
    }
94
91
    return 0;
95
}
96
97
/**
98
 * Put n values to buffer.
99
 *
100
 * @param p pointer to pointer to output buffer
101
 * @param n number of values
102
 * @param val pointer to values
103
 * @param type type of values
104
 * @param flip = 0 - normal copy, >0 - flip
105
 */
106
169
static void tnput(uint8_t **p, int n, const uint8_t *val, enum TiffTypes type,
107
                  int flip)
108
{
109
    int i;
110
#if HAVE_BIGENDIAN
111
    flip ^= ((int[]) { 0, 0, 0, 1, 3, 3 })[type];
112
#endif
113
5135
    for (i = 0; i < n * type_sizes2[type]; i++)
114
4966
        *(*p)++ = val[i ^ flip];
115
169
}
116
117
/**
118
 * Add entry to directory in tiff header.
119
 *
120
 * @param s Tiff context
121
 * @param tag tag that identifies the entry
122
 * @param type entry type
123
 * @param count the number of values
124
 * @param ptr_val pointer to values
125
 */
126
169
static int add_entry(TiffEncoderContext *s, enum TiffTags tag,
127
                     enum TiffTypes type, int count, const void *ptr_val)
128
{
129
169
    uint8_t *entries_ptr = s->entries + 12 * s->num_entries;
130
131
169
    av_assert0(s->num_entries < TIFF_MAX_ENTRY);
132
133
169
    bytestream_put_le16(&entries_ptr, tag);
134
169
    bytestream_put_le16(&entries_ptr, type);
135
169
    bytestream_put_le32(&entries_ptr, count);
136
137
169
    if (type_sizes[type] * (int64_t)count <= 4) {
138
104
        tnput(&entries_ptr, count, ptr_val, type, 0);
139
    } else {
140
65
        bytestream_put_le32(&entries_ptr, *s->buf - s->buf_start);
141
65
        if (check_size(s, count * (int64_t)type_sizes2[type]))
142
            return AVERROR_INVALIDDATA;
143
65
        tnput(s->buf, count, ptr_val, type, 0);
144
    }
145
146
169
    s->num_entries++;
147
169
    return 0;
148
}
149
150
104
static int add_entry1(TiffEncoderContext *s,
151
                      enum TiffTags tag, enum TiffTypes type, int val)
152
{
153
104
    uint16_t w  = val;
154
104
    uint32_t dw = val;
155
104
    return add_entry(s, tag, type, 1,
156
                     type == TIFF_SHORT ? (void *)&w : (void *)&dw);
157
}
158
159
/**
160
 * Encode one strip in tiff file.
161
 *
162
 * @param s Tiff context
163
 * @param src input buffer
164
 * @param dst output buffer
165
 * @param n size of input buffer
166
 * @param compr compression method
167
 * @return number of output bytes. If an output error is encountered, a negative
168
 * value corresponding to an AVERROR error code is returned.
169
 */
170
3744
static int encode_strip(TiffEncoderContext *s, const int8_t *src,
171
                        uint8_t *dst, int n, int compr)
172
{
173

3744
    switch (compr) {
174
#if CONFIG_ZLIB
175
    case TIFF_DEFLATE:
176
    case TIFF_ADOBE_DEFLATE:
177
    {
178
        unsigned long zlen = s->buf_size - (*s->buf - s->buf_start);
179
        if (compress(dst, &zlen, src, n) != Z_OK) {
180
            av_log(s->avctx, AV_LOG_ERROR, "Compressing failed\n");
181
            return AVERROR_EXTERNAL;
182
        }
183
        return zlen;
184
    }
185
#endif
186
    case TIFF_RAW:
187
        if (check_size(s, n))
188
            return AVERROR(EINVAL);
189
        memcpy(dst, src, n);
190
        return n;
191
3744
    case TIFF_PACKBITS:
192
3744
        return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start),
193
                             src, 1, n, 2, 0xff, -1, 0);
194
    case TIFF_LZW:
195
        return ff_lzw_encode(s->lzws, src, n);
196
    default:
197
        av_log(s->avctx, AV_LOG_ERROR, "Unsupported compression method: %d\n",
198
               compr);
199
        return AVERROR(EINVAL);
200
    }
201
}
202
203
static void pack_yuv(TiffEncoderContext *s, const AVFrame *p,
204
                     uint8_t *dst, int lnum)
205
{
206
    int i, j, k;
207
    int w       = (s->width - 1) / s->subsampling[0] + 1;
208
    uint8_t *pu = &p->data[1][lnum / s->subsampling[1] * p->linesize[1]];
209
    uint8_t *pv = &p->data[2][lnum / s->subsampling[1] * p->linesize[2]];
210
    if (s->width % s->subsampling[0] || s->height % s->subsampling[1]) {
211
        for (i = 0; i < w; i++) {
212
            for (j = 0; j < s->subsampling[1]; j++)
213
                for (k = 0; k < s->subsampling[0]; k++)
214
                    *dst++ = p->data[0][FFMIN(lnum + j, s->height-1) * p->linesize[0] +
215
                                        FFMIN(i * s->subsampling[0] + k, s->width-1)];
216
            *dst++ = *pu++;
217
            *dst++ = *pv++;
218
        }
219
    }else{
220
        for (i = 0; i < w; i++) {
221
            for (j = 0; j < s->subsampling[1]; j++)
222
                for (k = 0; k < s->subsampling[0]; k++)
223
                    *dst++ = p->data[0][(lnum + j) * p->linesize[0] +
224
                                        i * s->subsampling[0] + k];
225
            *dst++ = *pu++;
226
            *dst++ = *pv++;
227
        }
228
    }
229
}
230
231
#define ADD_ENTRY(s, tag, type, count, ptr_val)         \
232
    do {                                                \
233
        ret = add_entry(s, tag, type, count, ptr_val);  \
234
        if (ret < 0)                                    \
235
            goto fail;                                  \
236
    } while (0)
237
238
#define ADD_ENTRY1(s, tag, type, val)           \
239
    do {                                        \
240
        ret = add_entry1(s, tag, type, val);    \
241
        if (ret < 0)                            \
242
            goto fail;                          \
243
    } while (0)
244
245
13
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
246
                        const AVFrame *pict, int *got_packet)
247
{
248
13
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
249
13
    TiffEncoderContext *s = avctx->priv_data;
250
13
    const AVFrame *const p = pict;
251
    int i;
252
    uint8_t *ptr;
253
    uint8_t *offset;
254
    uint32_t strips;
255
    int bytes_per_row;
256
13
    uint32_t res[2] = { s->dpi, 1 };    // image resolution (72/1)
257
    uint16_t bpp_tab[4];
258
13
    int ret = 0;
259
13
    int is_yuv = 0, alpha = 0;
260
    int shift_h, shift_v;
261
    int packet_size;
262
263
13
    s->width          = avctx->width;
264
13
    s->height         = avctx->height;
265
13
    s->subsampling[0] = 1;
266
13
    s->subsampling[1] = 1;
267
268
13
    if (!desc)
269
        return AVERROR(EINVAL);
270
271
13
    avctx->bits_per_coded_sample =
272
13
    s->bpp          = av_get_bits_per_pixel(desc);
273
13
    s->bpp_tab_size = desc->nb_components;
274
275


13
    switch (avctx->pix_fmt) {
276
    case AV_PIX_FMT_RGBA64LE:
277
    case AV_PIX_FMT_RGBA:
278
        alpha = 1;
279
13
    case AV_PIX_FMT_RGB48LE:
280
    case AV_PIX_FMT_RGB24:
281
13
        s->photometric_interpretation = TIFF_PHOTOMETRIC_RGB;
282
13
        break;
283
    case AV_PIX_FMT_GRAY8:
284
        avctx->bits_per_coded_sample = 0x28;
285
    case AV_PIX_FMT_GRAY8A:
286
    case AV_PIX_FMT_YA16LE:
287
        alpha = avctx->pix_fmt == AV_PIX_FMT_GRAY8A || avctx->pix_fmt == AV_PIX_FMT_YA16LE;
288
    case AV_PIX_FMT_GRAY16LE:
289
    case AV_PIX_FMT_MONOBLACK:
290
        s->photometric_interpretation = TIFF_PHOTOMETRIC_BLACK_IS_ZERO;
291
        break;
292
    case AV_PIX_FMT_PAL8:
293
        s->photometric_interpretation = TIFF_PHOTOMETRIC_PALETTE;
294
        break;
295
    case AV_PIX_FMT_MONOWHITE:
296
        s->photometric_interpretation = TIFF_PHOTOMETRIC_WHITE_IS_ZERO;
297
        break;
298
    case AV_PIX_FMT_YUV420P:
299
    case AV_PIX_FMT_YUV422P:
300
    case AV_PIX_FMT_YUV440P:
301
    case AV_PIX_FMT_YUV444P:
302
    case AV_PIX_FMT_YUV410P:
303
    case AV_PIX_FMT_YUV411P:
304
        av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &shift_h, &shift_v);
305
        s->photometric_interpretation = TIFF_PHOTOMETRIC_YCBCR;
306
        s->subsampling[0]             = 1 << shift_h;
307
        s->subsampling[1]             = 1 << shift_v;
308
        is_yuv                        = 1;
309
        break;
310
    default:
311
        av_log(s->avctx, AV_LOG_ERROR,
312
               "This colors format is not supported\n");
313
        return AVERROR(EINVAL);
314
    }
315
316
52
    for (i = 0; i < s->bpp_tab_size; i++)
317
39
        bpp_tab[i] = desc->comp[i].depth;
318
319
13
    if (s->compr == TIFF_DEFLATE       ||
320
13
        s->compr == TIFF_ADOBE_DEFLATE ||
321
13
        s->compr == TIFF_LZW)
322
        // best choice for DEFLATE
323
        s->rps = s->height;
324
    else
325
        // suggest size of strip
326
13
        s->rps = FFMAX(8192 / (((s->width * s->bpp) >> 3) + 1), 1);
327
    // round rps up
328
13
    s->rps = ((s->rps - 1) / s->subsampling[1] + 1) * s->subsampling[1];
329
330
13
    strips = (s->height - 1) / s->rps + 1;
331
332
13
    bytes_per_row = (((s->width - 1) / s->subsampling[0] + 1) * s->bpp *
333
13
                     s->subsampling[0] * s->subsampling[1] + 7) >> 3;
334
13
    packet_size = avctx->height * bytes_per_row * 2 +
335
13
                  avctx->height * 4 + AV_INPUT_BUFFER_MIN_SIZE;
336
337
13
    if ((ret = ff_alloc_packet2(avctx, pkt, packet_size, 0)) < 0)
338
        return ret;
339
13
    ptr          = pkt->data;
340
13
    s->buf_start = pkt->data;
341
13
    s->buf       = &ptr;
342
13
    s->buf_size  = pkt->size;
343
344
13
    if (check_size(s, 8)) {
345
        ret = AVERROR(EINVAL);
346
        goto fail;
347
    }
348
349
    // write header
350
13
    bytestream_put_le16(&ptr, 0x4949);
351
13
    bytestream_put_le16(&ptr, 42);
352
353
13
    offset = ptr;
354
13
    bytestream_put_le32(&ptr, 0);
355
356
13
    if (strips > INT_MAX / FFMAX(sizeof(s->strip_sizes[0]), sizeof(s->strip_offsets[0]))) {
357
        ret = AVERROR(ENOMEM);
358
        goto fail;
359
    }
360
13
    av_fast_padded_mallocz(&s->strip_sizes  , &s->strip_sizes_size  , sizeof(s->strip_sizes  [0]) * strips);
361
13
    av_fast_padded_mallocz(&s->strip_offsets, &s->strip_offsets_size, sizeof(s->strip_offsets[0]) * strips);
362
363

13
    if (!s->strip_sizes || !s->strip_offsets) {
364
        ret = AVERROR(ENOMEM);
365
        goto fail;
366
    }
367
368
13
    if (is_yuv) {
369
        av_fast_padded_malloc(&s->yuv_line, &s->yuv_line_size, bytes_per_row);
370
        if (s->yuv_line == NULL) {
371
            av_log(s->avctx, AV_LOG_ERROR, "Not enough memory\n");
372
            ret = AVERROR(ENOMEM);
373
            goto fail;
374
        }
375
    }
376
377
#if CONFIG_ZLIB
378

13
    if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
379
        uint8_t *zbuf;
380
        int zlen, zn;
381
        int j;
382
383
        zlen = bytes_per_row * s->rps;
384
        zbuf = av_malloc(zlen);
385
        if (!zbuf) {
386
            ret = AVERROR(ENOMEM);
387
            goto fail;
388
        }
389
        s->strip_offsets[0] = ptr - pkt->data;
390
        zn               = 0;
391
        for (j = 0; j < s->rps; j++) {
392
            if (is_yuv) {
393
                pack_yuv(s, p, s->yuv_line, j);
394
                memcpy(zbuf + zn, s->yuv_line, bytes_per_row);
395
                j += s->subsampling[1] - 1;
396
            } else
397
                memcpy(zbuf + j * bytes_per_row,
398
                       p->data[0] + j * p->linesize[0], bytes_per_row);
399
            zn += bytes_per_row;
400
        }
401
        ret = encode_strip(s, zbuf, ptr, zn, s->compr);
402
        av_free(zbuf);
403
        if (ret < 0) {
404
            av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
405
            goto fail;
406
        }
407
        ptr           += ret;
408
        s->strip_sizes[0] = ptr - pkt->data - s->strip_offsets[0];
409
    } else
410
#endif
411
    {
412
13
    if (s->compr == TIFF_LZW) {
413
        s->lzws = av_malloc(ff_lzw_encode_state_size);
414
        if (!s->lzws) {
415
            ret = AVERROR(ENOMEM);
416
            goto fail;
417
        }
418
    }
419
3757
    for (i = 0; i < s->height; i++) {
420
3744
        if (s->strip_sizes[i / s->rps] == 0) {
421
546
            if (s->compr == TIFF_LZW) {
422
                ff_lzw_encode_init(s->lzws, ptr,
423
                                   s->buf_size - (*s->buf - s->buf_start),
424
                                   12, FF_LZW_TIFF, 0);
425
            }
426
546
            s->strip_offsets[i / s->rps] = ptr - pkt->data;
427
        }
428
3744
        if (is_yuv) {
429
            pack_yuv(s, p, s->yuv_line, i);
430
            ret = encode_strip(s, s->yuv_line, ptr, bytes_per_row, s->compr);
431
            i  += s->subsampling[1] - 1;
432
        } else
433
3744
            ret = encode_strip(s, p->data[0] + i * p->linesize[0],
434
                               ptr, bytes_per_row, s->compr);
435
3744
        if (ret < 0) {
436
            av_log(s->avctx, AV_LOG_ERROR, "Encode strip failed\n");
437
            goto fail;
438
        }
439
3744
        s->strip_sizes[i / s->rps] += ret;
440
3744
        ptr                     += ret;
441
3744
        if (s->compr == TIFF_LZW &&
442
            (i == s->height - 1 || i % s->rps == s->rps - 1)) {
443
            ret = ff_lzw_encode_flush(s->lzws);
444
            s->strip_sizes[(i / s->rps)] += ret;
445
            ptr                          += ret;
446
        }
447
    }
448
13
    if (s->compr == TIFF_LZW)
449
        av_freep(&s->lzws);
450
    }
451
452
13
    s->num_entries = 0;
453
454
13
    ADD_ENTRY1(s, TIFF_SUBFILE, TIFF_LONG, 0);
455
13
    ADD_ENTRY1(s, TIFF_WIDTH,   TIFF_LONG, s->width);
456
13
    ADD_ENTRY1(s, TIFF_HEIGHT,  TIFF_LONG, s->height);
457
458
13
    if (s->bpp_tab_size)
459
13
        ADD_ENTRY(s, TIFF_BPP, TIFF_SHORT, s->bpp_tab_size, bpp_tab);
460
461
13
    ADD_ENTRY1(s, TIFF_COMPR,       TIFF_SHORT, s->compr);
462
13
    ADD_ENTRY1(s, TIFF_PHOTOMETRIC, TIFF_SHORT, s->photometric_interpretation);
463
13
    ADD_ENTRY(s,  TIFF_STRIP_OFFS,  TIFF_LONG,  strips, s->strip_offsets);
464
465
13
    if (s->bpp_tab_size)
466
13
        ADD_ENTRY1(s, TIFF_SAMPLES_PER_PIXEL, TIFF_SHORT, s->bpp_tab_size);
467
468
13
    ADD_ENTRY1(s, TIFF_ROWSPERSTRIP, TIFF_LONG,     s->rps);
469
13
    ADD_ENTRY(s,  TIFF_STRIP_SIZE,   TIFF_LONG,     strips, s->strip_sizes);
470
13
    ADD_ENTRY(s,  TIFF_XRES,         TIFF_RATIONAL, 1,      res);
471
13
    if (avctx->sample_aspect_ratio.num > 0 &&
472
        avctx->sample_aspect_ratio.den > 0) {
473
        AVRational y = av_mul_q(av_make_q(s->dpi, 1),
474
                                avctx->sample_aspect_ratio);
475
        res[0] = y.num;
476
        res[1] = y.den;
477
    }
478
13
    ADD_ENTRY(s,  TIFF_YRES,         TIFF_RATIONAL, 1,      res);
479
13
    ADD_ENTRY1(s, TIFF_RES_UNIT,     TIFF_SHORT,    2);
480
481
13
    if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
482
        ADD_ENTRY(s, TIFF_SOFTWARE_NAME, TIFF_STRING,
483
                  strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
484
485
13
    if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
486
        uint16_t pal[256 * 3];
487
        for (i = 0; i < 256; i++) {
488
            uint32_t rgb = *(uint32_t *) (p->data[1] + i * 4);
489
            pal[i]       = ((rgb >> 16) & 0xff) * 257;
490
            pal[i + 256] = ((rgb >>  8) & 0xff) * 257;
491
            pal[i + 512] =  (rgb        & 0xff) * 257;
492
        }
493
        ADD_ENTRY(s, TIFF_PAL, TIFF_SHORT, 256 * 3, pal);
494
    }
495
13
    if (alpha)
496
        ADD_ENTRY1(s,TIFF_EXTRASAMPLES,      TIFF_SHORT,            2);
497
13
    if (is_yuv) {
498
        /** according to CCIR Recommendation 601.1 */
499
        uint32_t refbw[12] = { 15, 1, 235, 1, 128, 1, 240, 1, 128, 1, 240, 1 };
500
        ADD_ENTRY(s, TIFF_YCBCR_SUBSAMPLING, TIFF_SHORT,    2, s->subsampling);
501
        if (avctx->chroma_sample_location == AVCHROMA_LOC_TOPLEFT)
502
            ADD_ENTRY1(s, TIFF_YCBCR_POSITIONING, TIFF_SHORT, 2);
503
        ADD_ENTRY(s, TIFF_REFERENCE_BW,      TIFF_RATIONAL, 6, refbw);
504
    }
505
    // write offset to dir
506
13
    bytestream_put_le32(&offset, ptr - pkt->data);
507
508
13
    if (check_size(s, 6 + s->num_entries * 12)) {
509
        ret = AVERROR(EINVAL);
510
        goto fail;
511
    }
512
13
    bytestream_put_le16(&ptr, s->num_entries);  // write tag count
513
13
    bytestream_put_buffer(&ptr, s->entries, s->num_entries * 12);
514
13
    bytestream_put_le32(&ptr, 0);
515
516
13
    pkt->size   = ptr - pkt->data;
517
13
    pkt->flags |= AV_PKT_FLAG_KEY;
518
13
    *got_packet = 1;
519
520
13
fail:
521
13
    return ret < 0 ? ret : 0;
522
}
523
524
1
static av_cold int encode_init(AVCodecContext *avctx)
525
{
526
1
    TiffEncoderContext *s = avctx->priv_data;
527
528
#if !CONFIG_ZLIB
529
    if (s->compr == TIFF_DEFLATE) {
530
        av_log(avctx, AV_LOG_ERROR,
531
               "Deflate compression needs zlib compiled in\n");
532
        return AVERROR(ENOSYS);
533
    }
534
#endif
535
536
#if FF_API_CODED_FRAME
537
FF_DISABLE_DEPRECATION_WARNINGS
538
1
    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
539
1
    avctx->coded_frame->key_frame = 1;
540
FF_ENABLE_DEPRECATION_WARNINGS
541
#endif
542
1
    s->avctx = avctx;
543
544
1
    return 0;
545
}
546
547
1
static av_cold int encode_close(AVCodecContext *avctx)
548
{
549
1
    TiffEncoderContext *s = avctx->priv_data;
550
551
1
    av_freep(&s->strip_sizes);
552
1
    av_freep(&s->strip_offsets);
553
1
    av_freep(&s->yuv_line);
554
555
1
    return 0;
556
}
557
558
#define OFFSET(x) offsetof(TiffEncoderContext, x)
559
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
560
static const AVOption options[] = {
561
    {"dpi", "set the image resolution (in dpi)", OFFSET(dpi), AV_OPT_TYPE_INT, {.i64 = 72}, 1, 0x10000, AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_ENCODING_PARAM},
562
    { "compression_algo", NULL, OFFSET(compr), AV_OPT_TYPE_INT,   { .i64 = TIFF_PACKBITS }, TIFF_RAW, TIFF_DEFLATE, VE, "compression_algo" },
563
    { "packbits",         NULL, 0,             AV_OPT_TYPE_CONST, { .i64 = TIFF_PACKBITS }, 0,        0,            VE, "compression_algo" },
564
    { "raw",              NULL, 0,             AV_OPT_TYPE_CONST, { .i64 = TIFF_RAW      }, 0,        0,            VE, "compression_algo" },
565
    { "lzw",              NULL, 0,             AV_OPT_TYPE_CONST, { .i64 = TIFF_LZW      }, 0,        0,            VE, "compression_algo" },
566
    { "deflate",          NULL, 0,             AV_OPT_TYPE_CONST, { .i64 = TIFF_DEFLATE  }, 0,        0,            VE, "compression_algo" },
567
    { NULL },
568
};
569
570
static const AVClass tiffenc_class = {
571
    .class_name = "TIFF encoder",
572
    .item_name  = av_default_item_name,
573
    .option     = options,
574
    .version    = LIBAVUTIL_VERSION_INT,
575
};
576
577
AVCodec ff_tiff_encoder = {
578
    .name           = "tiff",
579
    .long_name      = NULL_IF_CONFIG_SMALL("TIFF image"),
580
    .type           = AVMEDIA_TYPE_VIDEO,
581
    .id             = AV_CODEC_ID_TIFF,
582
    .priv_data_size = sizeof(TiffEncoderContext),
583
    .init           = encode_init,
584
    .close          = encode_close,
585
    .capabilities   = AV_CODEC_CAP_FRAME_THREADS,
586
    .encode2        = encode_frame,
587
    .pix_fmts       = (const enum AVPixelFormat[]) {
588
        AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48LE, AV_PIX_FMT_PAL8,
589
        AV_PIX_FMT_RGBA, AV_PIX_FMT_RGBA64LE,
590
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_YA16LE,
591
        AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_MONOWHITE,
592
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
593
        AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
594
        AV_PIX_FMT_NONE
595
    },
596
    .priv_class     = &tiffenc_class,
597
};