GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/qtrle.c Lines: 286 314 91.1 %
Date: 2020-10-23 17:01:47 Branches: 159 227 70.0 %

Line Branch Exec Source
1
/*
2
 * Quicktime Animation (RLE) Video Decoder
3
 * Copyright (C) 2004 The FFmpeg project
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
 * QT RLE Video Decoder by Mike Melanson (melanson@pcisys.net)
25
 * For more information about the QT RLE format, visit:
26
 *   http://www.pcisys.net/~melanson/codecs/
27
 *
28
 * The QT RLE decoder has seven modes of operation:
29
 * 1, 2, 4, 8, 16, 24, and 32 bits per pixel. For modes 1, 2, 4, and 8
30
 * the decoder outputs PAL8 colorspace data. 16-bit data yields RGB555
31
 * data. 24-bit data is RGB24 and 32-bit data is RGB32.
32
 */
33
34
#include <stdio.h>
35
#include <stdlib.h>
36
#include <string.h>
37
38
#include "avcodec.h"
39
#include "decode.h"
40
#include "bytestream.h"
41
#include "internal.h"
42
43
typedef struct QtrleContext {
44
    AVCodecContext *avctx;
45
    AVFrame *frame;
46
47
    GetByteContext g;
48
    uint32_t pal[256];
49
} QtrleContext;
50
51
#define CHECK_PIXEL_PTR(n)                                                            \
52
    if ((pixel_ptr + n > pixel_limit) || (pixel_ptr + n < 0)) {                       \
53
        av_log (s->avctx, AV_LOG_ERROR, "Problem: pixel_ptr = %d, pixel_limit = %d\n",\
54
                pixel_ptr + n, pixel_limit);                                          \
55
        return;                                                                       \
56
    }                                                                                 \
57
58
38
static void qtrle_decode_1bpp(QtrleContext *s, int row_ptr, int lines_to_change)
59
{
60
    int rle_code;
61
    int pixel_ptr;
62
38
    int row_inc = s->frame->linesize[0];
63
    uint8_t pi0, pi1;  /* 2 8-pixel values */
64
38
    uint8_t *rgb = s->frame->data[0];
65
38
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
66
    int skip;
67
    /* skip & 0x80 appears to mean 'start a new line', which can be interpreted
68
     * as 'go to next line' during the decoding of a frame but is 'go to first
69
     * line' at the beginning. Since we always interpret it as 'go to next line'
70
     * in the decoding loop (which makes code simpler/faster), the first line
71
     * would not be counted, so we count one more.
72
     * See: https://trac.ffmpeg.org/ticket/226
73
     * In the following decoding loop, row_ptr will be the position of the
74
     * current row. */
75
76
38
    row_ptr  -= row_inc;
77
38
    pixel_ptr = row_ptr;
78
38
    lines_to_change++;
79
13034
    while (lines_to_change) {
80
13034
        skip     =              bytestream2_get_byte(&s->g);
81
13034
        rle_code = (int8_t)bytestream2_get_byte(&s->g);
82
13034
        if (rle_code == 0)
83
38
            break;
84
12996
        if(skip & 0x80) {
85
9120
            lines_to_change--;
86
9120
            row_ptr += row_inc;
87
9120
            pixel_ptr = row_ptr + 2 * 8 * (skip & 0x7f);
88
        } else
89
3876
            pixel_ptr += 2 * 8 * skip;
90

12996
        CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
91
92
12996
        if(rle_code == -1)
93
            continue;
94
95
12996
        if (rle_code < 0) {
96
            /* decode the run length code */
97
1825
            rle_code = -rle_code;
98
            /* get the next 2 bytes from the stream, treat them as groups
99
             * of 8 pixels, and output them rle_code times */
100
101
1825
            pi0 = bytestream2_get_byte(&s->g);
102
1825
            pi1 = bytestream2_get_byte(&s->g);
103

1825
            CHECK_PIXEL_PTR(rle_code * 2 * 8);
104
105
7072
            while (rle_code--) {
106
5247
                rgb[pixel_ptr++] = (pi0 >> 7) & 0x01;
107
5247
                rgb[pixel_ptr++] = (pi0 >> 6) & 0x01;
108
5247
                rgb[pixel_ptr++] = (pi0 >> 5) & 0x01;
109
5247
                rgb[pixel_ptr++] = (pi0 >> 4) & 0x01;
110
5247
                rgb[pixel_ptr++] = (pi0 >> 3) & 0x01;
111
5247
                rgb[pixel_ptr++] = (pi0 >> 2) & 0x01;
112
5247
                rgb[pixel_ptr++] = (pi0 >> 1) & 0x01;
113
5247
                rgb[pixel_ptr++] =  pi0       & 0x01;
114
5247
                rgb[pixel_ptr++] = (pi1 >> 7) & 0x01;
115
5247
                rgb[pixel_ptr++] = (pi1 >> 6) & 0x01;
116
5247
                rgb[pixel_ptr++] = (pi1 >> 5) & 0x01;
117
5247
                rgb[pixel_ptr++] = (pi1 >> 4) & 0x01;
118
5247
                rgb[pixel_ptr++] = (pi1 >> 3) & 0x01;
119
5247
                rgb[pixel_ptr++] = (pi1 >> 2) & 0x01;
120
5247
                rgb[pixel_ptr++] = (pi1 >> 1) & 0x01;
121
5247
                rgb[pixel_ptr++] =  pi1       & 0x01;
122
            }
123
        } else {
124
            /* copy the same pixel directly to output 2 times */
125
11171
            rle_code *= 2;
126

11171
            CHECK_PIXEL_PTR(rle_code * 8);
127
128
363961
            while (rle_code--) {
129
352790
                int x = bytestream2_get_byte(&s->g);
130
352790
                rgb[pixel_ptr++] = (x >> 7) & 0x01;
131
352790
                rgb[pixel_ptr++] = (x >> 6) & 0x01;
132
352790
                rgb[pixel_ptr++] = (x >> 5) & 0x01;
133
352790
                rgb[pixel_ptr++] = (x >> 4) & 0x01;
134
352790
                rgb[pixel_ptr++] = (x >> 3) & 0x01;
135
352790
                rgb[pixel_ptr++] = (x >> 2) & 0x01;
136
352790
                rgb[pixel_ptr++] = (x >> 1) & 0x01;
137
352790
                rgb[pixel_ptr++] =  x       & 0x01;
138
            }
139
        }
140
    }
141
}
142
143
114
static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr,
144
                                       int lines_to_change, int bpp)
145
{
146
    int rle_code, i;
147
    int pixel_ptr;
148
114
    int row_inc = s->frame->linesize[0];
149
    uint8_t pi[16];  /* 16 palette indices */
150
114
    uint8_t *rgb = s->frame->data[0];
151
114
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
152
114
    int num_pixels = (bpp == 4) ? 8 : 16;
153
154
27474
    while (lines_to_change--) {
155
27360
        pixel_ptr = row_ptr + (num_pixels * (bytestream2_get_byte(&s->g) - 1));
156

27360
        CHECK_PIXEL_PTR(0);
157
158
172476
        while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
159
145116
            if (bytestream2_get_bytes_left(&s->g) < 1)
160
                return;
161
145116
            if (rle_code == 0) {
162
                /* there's another skip code in the stream */
163
32727
                pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1));
164

32727
                CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
165
112389
            } else if (rle_code < 0) {
166
                /* decode the run length code */
167
30399
                rle_code = -rle_code;
168
                /* get the next 4 bytes from the stream, treat them as palette
169
                 * indexes, and output them rle_code times */
170
292911
                for (i = num_pixels-1; i >= 0; i--) {
171
262512
                    pi[num_pixels-1-i] = (bytestream2_peek_byte(&s->g) >> ((i*bpp) & 0x07)) & ((1<<bpp)-1);
172
262512
                    bytestream2_skip(&s->g, ((i & ((num_pixels>>2)-1)) == 0));
173
                }
174

30399
                CHECK_PIXEL_PTR(rle_code * num_pixels);
175
131895
                while (rle_code--) {
176
101496
                    memcpy(&rgb[pixel_ptr], &pi, num_pixels);
177
101496
                    pixel_ptr += num_pixels;
178
                }
179
            } else {
180
                /* copy the same pixel directly to output 4 times */
181
81990
                rle_code *= 4;
182

81990
                CHECK_PIXEL_PTR(rle_code*(num_pixels>>2));
183
2966410
                while (rle_code--) {
184
2884420
                    if(bpp == 4) {
185
2213528
                        int x = bytestream2_get_byte(&s->g);
186
2213528
                        rgb[pixel_ptr++] = (x >> 4) & 0x0f;
187
2213528
                        rgb[pixel_ptr++] =  x       & 0x0f;
188
                    } else {
189
670892
                        int x = bytestream2_get_byte(&s->g);
190
670892
                        rgb[pixel_ptr++] = (x >> 6) & 0x03;
191
670892
                        rgb[pixel_ptr++] = (x >> 4) & 0x03;
192
670892
                        rgb[pixel_ptr++] = (x >> 2) & 0x03;
193
670892
                        rgb[pixel_ptr++] =  x       & 0x03;
194
                    }
195
                }
196
            }
197
        }
198
27360
        row_ptr += row_inc;
199
    }
200
}
201
202
208
static void qtrle_decode_8bpp(QtrleContext *s, int row_ptr, int lines_to_change)
203
{
204
    int rle_code;
205
    int pixel_ptr;
206
208
    int row_inc = s->frame->linesize[0];
207
    uint8_t pi1, pi2, pi3, pi4;  /* 4 palette indexes */
208
208
    uint8_t *rgb = s->frame->data[0];
209
208
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
210
211
48519
    while (lines_to_change--) {
212
48311
        pixel_ptr = row_ptr + (4 * (bytestream2_get_byte(&s->g) - 1));
213

48311
        CHECK_PIXEL_PTR(0);
214
215
199338
        while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
216
151027
            if (bytestream2_get_bytes_left(&s->g) < 1)
217
                return;
218
151027
            if (rle_code == 0) {
219
                /* there's another skip code in the stream */
220
39089
                pixel_ptr += (4 * (bytestream2_get_byte(&s->g) - 1));
221

39089
                CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
222
111938
            } else if (rle_code < 0) {
223
                /* decode the run length code */
224
18173
                rle_code = -rle_code;
225
                /* get the next 4 bytes from the stream, treat them as palette
226
                 * indexes, and output them rle_code times */
227
18173
                pi1 = bytestream2_get_byte(&s->g);
228
18173
                pi2 = bytestream2_get_byte(&s->g);
229
18173
                pi3 = bytestream2_get_byte(&s->g);
230
18173
                pi4 = bytestream2_get_byte(&s->g);
231
232

18173
                CHECK_PIXEL_PTR(rle_code * 4);
233
234
119754
                while (rle_code--) {
235
101581
                    rgb[pixel_ptr++] = pi1;
236
101581
                    rgb[pixel_ptr++] = pi2;
237
101581
                    rgb[pixel_ptr++] = pi3;
238
101581
                    rgb[pixel_ptr++] = pi4;
239
                }
240
            } else {
241
                /* copy the same pixel directly to output 4 times */
242
93765
                rle_code *= 4;
243

93765
                CHECK_PIXEL_PTR(rle_code);
244
245
93765
                bytestream2_get_buffer(&s->g, &rgb[pixel_ptr], rle_code);
246
93765
                pixel_ptr += rle_code;
247
            }
248
        }
249
48311
        row_ptr += row_inc;
250
    }
251
}
252
253
83
static void qtrle_decode_16bpp(QtrleContext *s, int row_ptr, int lines_to_change)
254
{
255
    int rle_code;
256
    int pixel_ptr;
257
83
    int row_inc = s->frame->linesize[0];
258
    uint16_t rgb16;
259
83
    uint8_t *rgb = s->frame->data[0];
260
83
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
261
262
10043
    while (lines_to_change--) {
263
9960
        pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 2;
264

9960
        CHECK_PIXEL_PTR(0);
265
266
278662
        while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
267
268702
            if (bytestream2_get_bytes_left(&s->g) < 1)
268
                return;
269
268702
            if (rle_code == 0) {
270
                /* there's another skip code in the stream */
271
                pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 2;
272
                CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
273
268702
            } else if (rle_code < 0) {
274
                /* decode the run length code */
275
234583
                rle_code = -rle_code;
276
234583
                rgb16 = bytestream2_get_be16(&s->g);
277
278

234583
                CHECK_PIXEL_PTR(rle_code * 2);
279
280
1764013
                while (rle_code--) {
281
1529430
                    *(uint16_t *)(&rgb[pixel_ptr]) = rgb16;
282
1529430
                    pixel_ptr += 2;
283
                }
284
            } else {
285

34119
                CHECK_PIXEL_PTR(rle_code * 2);
286
287
                /* copy pixels directly to output */
288
98289
                while (rle_code--) {
289
64170
                    rgb16 = bytestream2_get_be16(&s->g);
290
64170
                    *(uint16_t *)(&rgb[pixel_ptr]) = rgb16;
291
64170
                    pixel_ptr += 2;
292
                }
293
            }
294
        }
295
9960
        row_ptr += row_inc;
296
    }
297
}
298
299
250
static void qtrle_decode_24bpp(QtrleContext *s, int row_ptr, int lines_to_change)
300
{
301
    int rle_code, rle_code_half;
302
    int pixel_ptr;
303
250
    int row_inc = s->frame->linesize[0];
304
    uint8_t b;
305
    uint16_t rg;
306
250
    uint8_t *rgb = s->frame->data[0];
307
250
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
308
309
51552
    while (lines_to_change--) {
310
51302
        pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 3;
311

51302
        CHECK_PIXEL_PTR(0);
312
313
1607159
        while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
314
1555857
            if (bytestream2_get_bytes_left(&s->g) < 1)
315
                return;
316
1555857
            if (rle_code == 0) {
317
                /* there's another skip code in the stream */
318
109372
                pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 3;
319

109372
                CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
320
1446485
            } else if (rle_code < 0) {
321
                /* decode the run length code */
322
764625
                rle_code = -rle_code;
323
764625
                rg = bytestream2_get_ne16(&s->g);
324
764625
                b = bytestream2_get_byte(&s->g);
325
326

764625
                CHECK_PIXEL_PTR(rle_code * 3);
327
328
3138145
                while (rle_code--) {
329
2373520
                    AV_WN16(rgb + pixel_ptr, rg);
330
2373520
                    rgb[pixel_ptr + 2] = b;
331
2373520
                    pixel_ptr += 3;
332
                }
333
            } else {
334

681860
                CHECK_PIXEL_PTR(rle_code * 3);
335
336
681860
                rle_code_half = rle_code / 2;
337
338
7319587
                while (rle_code_half--) { /* copy 2 raw rgb value at the same time */
339
6637727
                    AV_WN32(rgb + pixel_ptr, bytestream2_get_ne32(&s->g)); /* rgbr */
340
6637727
                    AV_WN16(rgb + pixel_ptr + 4, bytestream2_get_ne16(&s->g)); /* rgbr */
341
6637727
                    pixel_ptr += 6;
342
                }
343
344
681860
                if (rle_code % 2 != 0){ /* not even raw value */
345
229085
                    AV_WN16(rgb + pixel_ptr, bytestream2_get_ne16(&s->g));
346
229085
                    rgb[pixel_ptr + 2] = bytestream2_get_byte(&s->g);
347
229085
                    pixel_ptr += 3;
348
                }
349
            }
350
        }
351
51302
        row_ptr += row_inc;
352
    }
353
}
354
355
26
static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change)
356
{
357
    int rle_code, rle_code_half;
358
    int pixel_ptr;
359
26
    int row_inc = s->frame->linesize[0];
360
    unsigned int argb;
361
26
    uint8_t *rgb = s->frame->data[0];
362
26
    int pixel_limit = s->frame->linesize[0] * s->avctx->height;
363
364
12506
    while (lines_to_change--) {
365
12480
        pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 4;
366

12480
        CHECK_PIXEL_PTR(0);
367
368
1205972
        while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) {
369
1193492
            if (bytestream2_get_bytes_left(&s->g) < 1)
370
                return;
371
1193492
            if (rle_code == 0) {
372
                /* there's another skip code in the stream */
373
244756
                pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 4;
374

244756
                CHECK_PIXEL_PTR(0);  /* make sure pixel_ptr is positive */
375
948736
            } else if (rle_code < 0) {
376
                /* decode the run length code */
377
565158
                rle_code = -rle_code;
378
565158
                argb = bytestream2_get_ne32(&s->g);
379
380

565158
                CHECK_PIXEL_PTR(rle_code * 4);
381
382
2768198
                while (rle_code--) {
383
2203040
                    AV_WN32A(rgb + pixel_ptr, argb);
384
2203040
                    pixel_ptr += 4;
385
                }
386
            } else {
387

383578
                CHECK_PIXEL_PTR(rle_code * 4);
388
389
                /* copy pixels directly to output */
390
383578
                rle_code_half = rle_code / 2;
391
871158
                while (rle_code_half--) { /* copy 2 argb raw value at the same time */
392
487580
                    AV_WN64(rgb + pixel_ptr, bytestream2_get_ne64(&s->g));
393
487580
                    pixel_ptr += 8;
394
                }
395
396
383578
                if (rle_code % 2 != 0){ /* not even raw value */
397
256768
                    AV_WN32A(rgb + pixel_ptr, bytestream2_get_ne32(&s->g));
398
256768
                    pixel_ptr += 4;
399
                }
400
            }
401
        }
402
12480
        row_ptr += row_inc;
403
    }
404
}
405
406
39
static av_cold int qtrle_decode_init(AVCodecContext *avctx)
407
{
408
39
    QtrleContext *s = avctx->priv_data;
409
410
39
    s->avctx = avctx;
411

39
    switch (avctx->bits_per_coded_sample) {
412
17
    case 1:
413
    case 2:
414
    case 4:
415
    case 8:
416
    case 33:
417
    case 34:
418
    case 36:
419
    case 40:
420
17
        avctx->pix_fmt = AV_PIX_FMT_PAL8;
421
17
        break;
422
423
2
    case 16:
424
2
        avctx->pix_fmt = AV_PIX_FMT_RGB555;
425
2
        break;
426
427
18
    case 24:
428
18
        avctx->pix_fmt = AV_PIX_FMT_RGB24;
429
18
        break;
430
431
2
    case 32:
432
2
        avctx->pix_fmt = AV_PIX_FMT_ARGB;
433
2
        break;
434
435
    default:
436
        av_log (avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
437
            avctx->bits_per_coded_sample);
438
        return AVERROR_INVALIDDATA;
439
    }
440
441
39
    s->frame = av_frame_alloc();
442
39
    if (!s->frame)
443
        return AVERROR(ENOMEM);
444
445
39
    return 0;
446
}
447
448
828
static int qtrle_decode_frame(AVCodecContext *avctx,
449
                              void *data, int *got_frame,
450
                              AVPacket *avpkt)
451
{
452
828
    QtrleContext *s = avctx->priv_data;
453
    int header, start_line;
454
    int height, row_ptr;
455
828
    int has_palette = 0;
456
828
    int duplicate = 0;
457
    int ret, size;
458
459
828
    bytestream2_init(&s->g, avpkt->data, avpkt->size);
460
461
    /* check if this frame is even supposed to change */
462
828
    if (avpkt->size < 8) {
463
109
        duplicate = 1;
464
109
        goto done;
465
    }
466
467
    /* start after the chunk size */
468
719
    size = bytestream2_get_be32(&s->g) & 0x3FFFFFFF;
469
719
    if (size - avpkt->size >  size * (int64_t)avctx->discard_damaged_percentage / 100)
470
        return AVERROR_INVALIDDATA;
471
472
473
    /* fetch the header */
474
719
    header = bytestream2_get_be16(&s->g);
475
476
    /* if a header is present, fetch additional decoding parameters */
477
719
    if (header & 0x0008) {
478
369
        if (avpkt->size < 14) {
479
            duplicate = 1;
480
            goto done;
481
        }
482
369
        start_line = bytestream2_get_be16(&s->g);
483
369
        bytestream2_skip(&s->g, 2);
484
369
        height     = bytestream2_get_be16(&s->g);
485
369
        bytestream2_skip(&s->g, 2);
486
369
        if (height > s->avctx->height - start_line) {
487
            duplicate = 1;
488
            goto done;
489
        }
490
    } else {
491
350
        start_line = 0;
492
350
        height     = s->avctx->height;
493
    }
494
719
    if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
495
        return ret;
496
497
719
    row_ptr = s->frame->linesize[0] * start_line;
498
499


719
    switch (avctx->bits_per_coded_sample) {
500
38
    case 1:
501
    case 33:
502
38
        qtrle_decode_1bpp(s, row_ptr, height);
503
38
        has_palette = 1;
504
38
        break;
505
506
38
    case 2:
507
    case 34:
508
38
        qtrle_decode_2n4bpp(s, row_ptr, height, 2);
509
38
        has_palette = 1;
510
38
        break;
511
512
76
    case 4:
513
    case 36:
514
76
        qtrle_decode_2n4bpp(s, row_ptr, height, 4);
515
76
        has_palette = 1;
516
76
        break;
517
518
208
    case 8:
519
    case 40:
520
208
        qtrle_decode_8bpp(s, row_ptr, height);
521
208
        has_palette = 1;
522
208
        break;
523
524
83
    case 16:
525
83
        qtrle_decode_16bpp(s, row_ptr, height);
526
83
        break;
527
528
250
    case 24:
529
250
        qtrle_decode_24bpp(s, row_ptr, height);
530
250
        break;
531
532
26
    case 32:
533
26
        qtrle_decode_32bpp(s, row_ptr, height);
534
26
        break;
535
536
    default:
537
        av_log (s->avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n",
538
            avctx->bits_per_coded_sample);
539
        break;
540
    }
541
542
719
    if(has_palette) {
543
        int size;
544
360
        const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, &size);
545
546

360
        if (pal && size == AVPALETTE_SIZE) {
547
8
            s->frame->palette_has_changed = 1;
548
8
            memcpy(s->pal, pal, AVPALETTE_SIZE);
549
352
        } else if (pal) {
550
            av_log(avctx, AV_LOG_ERROR, "Palette size %d is wrong\n", size);
551
        }
552
553
        /* make the palette available on the way out */
554
360
        memcpy(s->frame->data[1], s->pal, AVPALETTE_SIZE);
555
    }
556
557
359
done:
558
828
    if (!s->frame->data[0])
559
        return AVERROR_INVALIDDATA;
560
828
    if (duplicate) {
561
        // ff_reget_buffer() isn't needed when frames don't change, so just update
562
        // frame props.
563
109
        ret = ff_decode_frame_props(avctx, s->frame);
564
109
        if (ret < 0)
565
            return ret;
566
    }
567
568
828
    if ((ret = av_frame_ref(data, s->frame)) < 0)
569
        return ret;
570
828
    *got_frame      = 1;
571
572
    /* always report that the buffer was completely consumed */
573
828
    return avpkt->size;
574
}
575
576
static void qtrle_decode_flush(AVCodecContext *avctx)
577
{
578
    QtrleContext *s = avctx->priv_data;
579
580
    av_frame_unref(s->frame);
581
}
582
583
39
static av_cold int qtrle_decode_end(AVCodecContext *avctx)
584
{
585
39
    QtrleContext *s = avctx->priv_data;
586
587
39
    av_frame_free(&s->frame);
588
589
39
    return 0;
590
}
591
592
AVCodec ff_qtrle_decoder = {
593
    .name           = "qtrle",
594
    .long_name      = NULL_IF_CONFIG_SMALL("QuickTime Animation (RLE) video"),
595
    .type           = AVMEDIA_TYPE_VIDEO,
596
    .id             = AV_CODEC_ID_QTRLE,
597
    .priv_data_size = sizeof(QtrleContext),
598
    .init           = qtrle_decode_init,
599
    .close          = qtrle_decode_end,
600
    .decode         = qtrle_decode_frame,
601
    .flush          = qtrle_decode_flush,
602
    .capabilities   = AV_CODEC_CAP_DR1,
603
};