FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/qdrw.c
Date: 2022-07-04 19:11:22
Exec Total Coverage
Lines: 148 294 50.3%
Branches: 75 209 35.9%

Line Branch Exec Source
1 /*
2 * QuickDraw (qdrw) codec
3 * Copyright (c) 2004 Konstantin Shishkov
4 * Copyright (c) 2015 Vittorio Giovara
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * Apple QuickDraw codec.
26 * https://developer.apple.com/legacy/library/documentation/mac/QuickDraw/QuickDraw-461.html
27 */
28
29 #include "libavutil/common.h"
30 #include "libavutil/intreadwrite.h"
31 #include "avcodec.h"
32 #include "bytestream.h"
33 #include "codec_internal.h"
34 #include "internal.h"
35
36 enum QuickdrawOpcodes {
37 CLIP = 0x0001,
38 PACKBITSRECT = 0x0098,
39 PACKBITSRGN,
40 DIRECTBITSRECT,
41 DIRECTBITSRGN,
42 SHORTCOMMENT = 0x00A0,
43 LONGCOMMENT,
44
45 EOP = 0x00FF,
46 };
47
48 13 static int parse_palette(AVCodecContext *avctx, GetByteContext *gbc,
49 uint32_t *pal, int colors, int pixmap)
50 {
51 int i;
52
53
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3341 for (i = 0; i <= colors; i++) {
54 uint8_t r, g, b;
55 3328 unsigned int idx = bytestream2_get_be16(gbc); /* color index */
56
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3328 if (idx > 255 && !pixmap) {
57 av_log(avctx, AV_LOG_WARNING,
58 "Palette index out of range: %u\n", idx);
59 bytestream2_skip(gbc, 6);
60 continue;
61 }
62
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3328 if (avctx->pix_fmt != AV_PIX_FMT_PAL8)
63 return AVERROR_INVALIDDATA;
64 3328 r = bytestream2_get_byte(gbc);
65 3328 bytestream2_skip(gbc, 1);
66 3328 g = bytestream2_get_byte(gbc);
67 3328 bytestream2_skip(gbc, 1);
68 3328 b = bytestream2_get_byte(gbc);
69 3328 bytestream2_skip(gbc, 1);
70
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3328 pal[pixmap ? i : idx] = (0xFFU << 24) | (r << 16) | (g << 8) | b;
71 }
72 13 return 0;
73 }
74
75 static int decode_rle_bpp2(AVCodecContext *avctx, AVFrame *p, GetByteContext *gbc)
76 {
77 int offset = avctx->width;
78 uint8_t *outdata = p->data[0];
79 int i, j;
80
81 for (i = 0; i < avctx->height; i++) {
82 int size, left, code, pix;
83 uint8_t *out = outdata;
84 int pos = 0;
85
86 /* size of packed line */
87 if (offset / 4 > 200)
88 size = left = bytestream2_get_be16(gbc);
89 else
90 size = left = bytestream2_get_byte(gbc);
91 if (bytestream2_get_bytes_left(gbc) < size)
92 return AVERROR_INVALIDDATA;
93
94 /* decode line */
95 while (left > 0) {
96 code = bytestream2_get_byte(gbc);
97 if (code & 0x80 ) { /* run */
98 pix = bytestream2_get_byte(gbc);
99 for (j = 0; j < 257 - code; j++) {
100 if (pos < offset)
101 out[pos++] = (pix & 0xC0) >> 6;
102 if (pos < offset)
103 out[pos++] = (pix & 0x30) >> 4;
104 if (pos < offset)
105 out[pos++] = (pix & 0x0C) >> 2;
106 if (pos < offset)
107 out[pos++] = (pix & 0x03);
108 }
109 left -= 2;
110 } else { /* copy */
111 for (j = 0; j < code + 1; j++) {
112 pix = bytestream2_get_byte(gbc);
113 if (pos < offset)
114 out[pos++] = (pix & 0xC0) >> 6;
115 if (pos < offset)
116 out[pos++] = (pix & 0x30) >> 4;
117 if (pos < offset)
118 out[pos++] = (pix & 0x0C) >> 2;
119 if (pos < offset)
120 out[pos++] = (pix & 0x03);
121 }
122 left -= 1 + (code + 1);
123 }
124 }
125 outdata += p->linesize[0];
126 }
127 return 0;
128 }
129
130 static int decode_rle_bpp4(AVCodecContext *avctx, AVFrame *p, GetByteContext *gbc)
131 {
132 int offset = avctx->width;
133 uint8_t *outdata = p->data[0];
134 int i, j;
135
136 for (i = 0; i < avctx->height; i++) {
137 int size, left, code, pix;
138 uint8_t *out = outdata;
139 int pos = 0;
140
141 /* size of packed line */
142 size = left = bytestream2_get_be16(gbc);
143 if (bytestream2_get_bytes_left(gbc) < size)
144 return AVERROR_INVALIDDATA;
145
146 /* decode line */
147 while (left > 0) {
148 code = bytestream2_get_byte(gbc);
149 if (code & 0x80 ) { /* run */
150 pix = bytestream2_get_byte(gbc);
151 for (j = 0; j < 257 - code; j++) {
152 if (pos < offset)
153 out[pos++] = (pix & 0xF0) >> 4;
154 if (pos < offset)
155 out[pos++] = pix & 0xF;
156 }
157 left -= 2;
158 } else { /* copy */
159 for (j = 0; j < code + 1; j++) {
160 pix = bytestream2_get_byte(gbc);
161 if (pos < offset)
162 out[pos++] = (pix & 0xF0) >> 4;
163 if (pos < offset)
164 out[pos++] = pix & 0xF;
165 }
166 left -= 1 + (code + 1);
167 }
168 }
169 outdata += p->linesize[0];
170 }
171 return 0;
172 }
173
174 static int decode_rle16(AVCodecContext *avctx, AVFrame *p, GetByteContext *gbc)
175 {
176 int offset = avctx->width;
177 uint8_t *outdata = p->data[0];
178 int i, j;
179
180 for (i = 0; i < avctx->height; i++) {
181 int size, left, code, pix;
182 uint16_t *out = (uint16_t *)outdata;
183 int pos = 0;
184
185 /* size of packed line */
186 size = left = bytestream2_get_be16(gbc);
187 if (bytestream2_get_bytes_left(gbc) < size)
188 return AVERROR_INVALIDDATA;
189
190 /* decode line */
191 while (left > 0) {
192 code = bytestream2_get_byte(gbc);
193 if (code & 0x80 ) { /* run */
194 pix = bytestream2_get_be16(gbc);
195 for (j = 0; j < 257 - code; j++) {
196 if (pos < offset) {
197 out[pos++] = pix;
198 }
199 }
200 left -= 3;
201 } else { /* copy */
202 for (j = 0; j < code + 1; j++) {
203 if (pos < offset) {
204 out[pos++] = bytestream2_get_be16(gbc);
205 } else {
206 bytestream2_skip(gbc, 2);
207 }
208 }
209 left -= 1 + (code + 1) * 2;
210 }
211 }
212 outdata += p->linesize[0];
213 }
214 return 0;
215 }
216
217 15 static int decode_rle(AVCodecContext *avctx, AVFrame *p, GetByteContext *gbc,
218 int step)
219 {
220 int i, j;
221 15 int offset = avctx->width * step;
222 15 uint8_t *outdata = p->data[0];
223
224
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6383 for (i = 0; i < avctx->height; i++) {
225 int size, left, code, pix;
226 6368 uint8_t *out = outdata;
227 6368 int pos = 0;
228
229 /* size of packed line */
230 6368 size = left = bytestream2_get_be16(gbc);
231
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6368 if (bytestream2_get_bytes_left(gbc) < size)
232 return AVERROR_INVALIDDATA;
233
234 /* decode line */
235
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477937 while (left > 0) {
236 471569 code = bytestream2_get_byte(gbc);
237
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471569 if (code & 0x80 ) { /* run */
238 246815 pix = bytestream2_get_byte(gbc);
239
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1602325 for (j = 0; j < 257 - code; j++) {
240
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1355510 if (pos < offset)
241 1355510 out[pos] = pix;
242 1355510 pos += step;
243
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1355510 if (pos >= offset && step > 1) {
244 384 pos -= offset;
245 384 pos++;
246 }
247 }
248 246815 left -= 2;
249 } else { /* copy */
250
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2961148 for (j = 0; j < code + 1; j++) {
251 2736394 pix = bytestream2_get_byte(gbc);
252
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2736394 if (pos < offset)
253 2736394 out[pos] = pix;
254 2736394 pos += step;
255
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2736394 if (pos >= offset && step > 1) {
256 pos -= offset;
257 pos++;
258 }
259 }
260 224754 left -= 2 + code;
261 }
262 }
263 6368 outdata += p->linesize[0];
264 }
265 15 return 0;
266 }
267
268 40 static int check_header(const char *buf, int buf_size)
269 {
270 unsigned w, h, v0, v1;
271
272
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40 if (buf_size < 40)
273 return 0;
274
275 40 w = AV_RB16(buf+6);
276 40 h = AV_RB16(buf+8);
277 40 v0 = AV_RB16(buf+10);
278 40 v1 = AV_RB16(buf+12);
279
280
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40 if (!w || !h)
281 return 0;
282
283
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40 if (v0 == 0x1101)
284 return 1;
285
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40 if (v0 == 0x0011 && v1 == 0x02FF)
286 20 return 2;
287 20 return 0;
288 }
289
290
291 20 static int decode_frame(AVCodecContext *avctx, AVFrame *p,
292 int *got_frame, AVPacket *avpkt)
293 {
294 GetByteContext gbc;
295 int colors;
296 int w, h, ret;
297 int ver;
298
299 20 bytestream2_init(&gbc, avpkt->data, avpkt->size);
300
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20 if ( bytestream2_get_bytes_left(&gbc) >= 552
301
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20 && check_header(gbc.buffer + 512, bytestream2_get_bytes_left(&gbc) - 512)
302 )
303 bytestream2_skip(&gbc, 512);
304
305 20 ver = check_header(gbc.buffer, bytestream2_get_bytes_left(&gbc));
306
307 /* smallest PICT header */
308
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20 if (bytestream2_get_bytes_left(&gbc) < 40) {
309 av_log(avctx, AV_LOG_ERROR, "Frame is too small %d\n",
310 bytestream2_get_bytes_left(&gbc));
311 return AVERROR_INVALIDDATA;
312 }
313
314 20 bytestream2_skip(&gbc, 6);
315 20 h = bytestream2_get_be16(&gbc);
316 20 w = bytestream2_get_be16(&gbc);
317
318 20 ret = ff_set_dimensions(avctx, w, h);
319
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20 if (ret < 0)
320 return ret;
321
322 /* version 1 is identified by 0x1101
323 * it uses byte-aligned opcodes rather than word-aligned */
324
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20 if (ver == 1) {
325 avpriv_request_sample(avctx, "QuickDraw version 1");
326 return AVERROR_PATCHWELCOME;
327
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20 } else if (ver != 2) {
328 avpriv_request_sample(avctx, "QuickDraw version unknown (%X)", bytestream2_get_be32(&gbc));
329 return AVERROR_PATCHWELCOME;
330 }
331
332 20 bytestream2_skip(&gbc, 4+26);
333
334
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715 while (bytestream2_get_bytes_left(&gbc) >= 4) {
335 int bppcnt, bpp;
336 int rowbytes, pack_type;
337 int flags;
338 710 int opcode = bytestream2_get_be16(&gbc);
339
340
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710 switch(opcode) {
341 30 case CLIP:
342 30 bytestream2_skip(&gbc, 10);
343 30 break;
344 13 case PACKBITSRECT:
345 case PACKBITSRGN:
346 13 av_log(avctx, AV_LOG_DEBUG, "Parsing Packbit opcode\n");
347
348 13 flags = bytestream2_get_be16(&gbc) & 0xC000;
349 13 bytestream2_skip(&gbc, 28);
350 13 bppcnt = bytestream2_get_be16(&gbc); /* cmpCount */
351 13 bpp = bytestream2_get_be16(&gbc); /* cmpSize */
352
353 13 av_log(avctx, AV_LOG_DEBUG, "bppcount %d bpp %d\n", bppcnt, bpp);
354
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13 if (bppcnt == 1 && bpp == 8) {
355 13 avctx->pix_fmt = AV_PIX_FMT_PAL8;
356 } else if (bppcnt == 1 && (bpp == 4 || bpp == 2)) {
357 avctx->pix_fmt = AV_PIX_FMT_PAL8;
358 } else if (bppcnt == 3 && bpp == 5) {
359 avctx->pix_fmt = AV_PIX_FMT_RGB555;
360 } else {
361 av_log(avctx, AV_LOG_ERROR,
362 "Invalid pixel format (bppcnt %d bpp %d) in Packbit\n",
363 bppcnt, bpp);
364 return AVERROR_INVALIDDATA;
365 }
366
367 /* jump to palette */
368 13 bytestream2_skip(&gbc, 18);
369 13 colors = bytestream2_get_be16(&gbc);
370
371
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13 if (colors < 0 || colors > 255) {
372 av_log(avctx, AV_LOG_ERROR,
373 "Error color count - %i(0x%X)\n", colors, colors);
374 return AVERROR_INVALIDDATA;
375 }
376
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13 if (bytestream2_get_bytes_left(&gbc) < (colors + 1) * 8) {
377 av_log(avctx, AV_LOG_ERROR, "Palette is too small %d\n",
378 bytestream2_get_bytes_left(&gbc));
379 return AVERROR_INVALIDDATA;
380 }
381
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13 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
382 return ret;
383
384 13 ret = parse_palette(avctx, &gbc, (uint32_t *)p->data[1], colors, flags & 0x8000);
385
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13 if (ret < 0)
386 return ret;
387 13 p->palette_has_changed = 1;
388
389 /* jump to image data */
390 13 bytestream2_skip(&gbc, 18);
391
392
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13 if (opcode == PACKBITSRGN) {
393 bytestream2_skip(&gbc, 2 + 8); /* size + rect */
394 avpriv_report_missing_feature(avctx, "Packbit mask region");
395 }
396
397
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13 if (avctx->pix_fmt == AV_PIX_FMT_RGB555)
398 ret = decode_rle16(avctx, p, &gbc);
399
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13 else if (bpp == 2)
400 ret = decode_rle_bpp2(avctx, p, &gbc);
401
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13 else if (bpp == 4)
402 ret = decode_rle_bpp4(avctx, p, &gbc);
403 else
404 13 ret = decode_rle(avctx, p, &gbc, bppcnt);
405
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13 if (ret < 0)
406 return ret;
407 13 *got_frame = 1;
408 13 break;
409 2 case DIRECTBITSRECT:
410 case DIRECTBITSRGN:
411 2 av_log(avctx, AV_LOG_DEBUG, "Parsing Directbit opcode\n");
412
413 2 bytestream2_skip(&gbc, 4);
414 2 rowbytes = bytestream2_get_be16(&gbc) & 0x3FFF;
415
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2 if (rowbytes <= 250) {
416 avpriv_report_missing_feature(avctx, "Short rowbytes");
417 return AVERROR_PATCHWELCOME;
418 }
419
420 2 bytestream2_skip(&gbc, 4);
421 2 h = bytestream2_get_be16(&gbc);
422 2 w = bytestream2_get_be16(&gbc);
423 2 bytestream2_skip(&gbc, 2);
424
425 2 ret = ff_set_dimensions(avctx, w, h);
426
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2 if (ret < 0)
427 return ret;
428
429 2 pack_type = bytestream2_get_be16(&gbc);
430
431 2 bytestream2_skip(&gbc, 16);
432 2 bppcnt = bytestream2_get_be16(&gbc); /* cmpCount */
433 2 bpp = bytestream2_get_be16(&gbc); /* cmpSize */
434
435 2 av_log(avctx, AV_LOG_DEBUG, "bppcount %d bpp %d\n", bppcnt, bpp);
436
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2 if (bppcnt == 3 && bpp == 8) {
437 2 avctx->pix_fmt = AV_PIX_FMT_RGB24;
438 } else if (bppcnt == 3 && bpp == 5 || bppcnt == 2 && bpp == 8) {
439 avctx->pix_fmt = AV_PIX_FMT_RGB555;
440 } else if (bppcnt == 4 && bpp == 8) {
441 avctx->pix_fmt = AV_PIX_FMT_ARGB;
442 } else {
443 av_log(avctx, AV_LOG_ERROR,
444 "Invalid pixel format (bppcnt %d bpp %d) in Directbit\n",
445 bppcnt, bpp);
446 return AVERROR_INVALIDDATA;
447 }
448
449 /* set packing when default is selected */
450
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2 if (pack_type == 0)
451 pack_type = bppcnt;
452
453
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2 if (pack_type != 3 && pack_type != 4) {
454 avpriv_request_sample(avctx, "Pack type %d", pack_type);
455 return AVERROR_PATCHWELCOME;
456 }
457
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2 if (bytestream2_get_bytes_left(&gbc) < 30)
458 return AVERROR_INVALIDDATA;
459
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2 if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
460 return ret;
461
462 /* jump to data */
463 2 bytestream2_skip(&gbc, 30);
464
465
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2 if (opcode == DIRECTBITSRGN) {
466 bytestream2_skip(&gbc, 2 + 8); /* size + rect */
467 avpriv_report_missing_feature(avctx, "DirectBit mask region");
468 }
469
470
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2 if (avctx->pix_fmt == AV_PIX_FMT_RGB555)
471 ret = decode_rle16(avctx, p, &gbc);
472 else
473 2 ret = decode_rle(avctx, p, &gbc, bppcnt);
474
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2 if (ret < 0)
475 return ret;
476 2 *got_frame = 1;
477 2 break;
478 10 case LONGCOMMENT:
479 10 bytestream2_get_be16(&gbc);
480 10 bytestream2_skip(&gbc, bytestream2_get_be16(&gbc));
481 10 break;
482 655 default:
483 655 av_log(avctx, AV_LOG_TRACE, "Unknown 0x%04X opcode\n", opcode);
484 655 break;
485 }
486 /* exit the loop when a known pixel block has been found */
487
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710 if (*got_frame) {
488 int eop, trail;
489
490 /* re-align to a word */
491 15 bytestream2_skip(&gbc, bytestream2_get_bytes_left(&gbc) % 2);
492
493 15 eop = bytestream2_get_be16(&gbc);
494 15 trail = bytestream2_get_bytes_left(&gbc);
495
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15 if (eop != EOP)
496 av_log(avctx, AV_LOG_WARNING,
497 "Missing end of picture opcode (found 0x%04X)\n", eop);
498
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15 if (trail)
499 av_log(avctx, AV_LOG_WARNING, "Got %d trailing bytes\n", trail);
500 15 break;
501 }
502 }
503
504
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20 if (*got_frame) {
505 15 p->pict_type = AV_PICTURE_TYPE_I;
506 15 p->key_frame = 1;
507
508 15 return avpkt->size;
509 } else {
510 5 av_log(avctx, AV_LOG_ERROR, "Frame contained no usable data\n");
511
512 5 return AVERROR_INVALIDDATA;
513 }
514 }
515
516 const FFCodec ff_qdraw_decoder = {
517 .p.name = "qdraw",
518 .p.long_name = NULL_IF_CONFIG_SMALL("Apple QuickDraw"),
519 .p.type = AVMEDIA_TYPE_VIDEO,
520 .p.id = AV_CODEC_ID_QDRAW,
521 .p.capabilities = AV_CODEC_CAP_DR1,
522 FF_CODEC_DECODE_CB(decode_frame),
523 };
524