| 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 "bytestream.h" |
| 40 | #include "internal.h" |
| 41 | |
| 42 | typedef struct QtrleContext { |
| 43 | AVCodecContext *avctx; |
| 44 | AVFrame *frame; |
| 45 | |
| 46 | GetByteContext g; |
| 47 | uint32_t pal[256]; |
| 48 | } QtrleContext; |
| 49 | |
| 50 | #define CHECK_PIXEL_PTR(n) \ |
| 51 | if ((pixel_ptr + n > pixel_limit) || (pixel_ptr + n < 0)) { \ |
| 52 | av_log (s->avctx, AV_LOG_ERROR, "Problem: pixel_ptr = %d, pixel_limit = %d\n",\ |
| 53 | pixel_ptr + n, pixel_limit); \ |
| 54 | return; \ |
| 55 | } \ |
| 56 | |
| 57 | static void qtrle_decode_1bpp(QtrleContext *s, int row_ptr, int lines_to_change) |
| 58 | { |
| 59 | int rle_code; |
| 60 | int pixel_ptr; |
| 61 | int row_inc = s->frame->linesize[0]; |
| 62 | uint8_t pi0, pi1; /* 2 8-pixel values */ |
| 63 | uint8_t *rgb = s->frame->data[0]; |
| 64 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 65 | int skip; |
| 66 | /* skip & 0x80 appears to mean 'start a new line', which can be interpreted |
| 67 | * as 'go to next line' during the decoding of a frame but is 'go to first |
| 68 | * line' at the beginning. Since we always interpret it as 'go to next line' |
| 69 | * in the decoding loop (which makes code simpler/faster), the first line |
| 70 | * would not be counted, so we count one more. |
| 71 | * See: https://trac.ffmpeg.org/ticket/226 |
| 72 | * In the following decoding loop, row_ptr will be the position of the |
| 73 | * current row. */ |
| 74 | |
| 75 | row_ptr -= row_inc; |
| 76 | pixel_ptr = row_ptr; |
| 77 | lines_to_change++; |
| 78 | while (lines_to_change) { |
| 79 | skip = bytestream2_get_byte(&s->g); |
| 80 | rle_code = (int8_t)bytestream2_get_byte(&s->g); |
| 81 | if (rle_code == 0) |
| 82 | break; |
| 83 | if(skip & 0x80) { |
| 84 | lines_to_change--; |
| 85 | row_ptr += row_inc; |
| 86 | pixel_ptr = row_ptr + 2 * (skip & 0x7f); |
| 87 | } else |
| 88 | pixel_ptr += 2 * skip; |
| 89 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 90 | |
| 91 | if(rle_code == -1) |
| 92 | continue; |
| 93 | |
| 94 | if (rle_code < 0) { |
| 95 | /* decode the run length code */ |
| 96 | rle_code = -rle_code; |
| 97 | /* get the next 2 bytes from the stream, treat them as groups |
| 98 | * of 8 pixels, and output them rle_code times */ |
| 99 | |
| 100 | pi0 = bytestream2_get_byte(&s->g); |
| 101 | pi1 = bytestream2_get_byte(&s->g); |
| 102 | CHECK_PIXEL_PTR(rle_code * 2); |
| 103 | |
| 104 | while (rle_code--) { |
| 105 | rgb[pixel_ptr++] = pi0; |
| 106 | rgb[pixel_ptr++] = pi1; |
| 107 | } |
| 108 | } else { |
| 109 | /* copy the same pixel directly to output 2 times */ |
| 110 | rle_code *= 2; |
| 111 | CHECK_PIXEL_PTR(rle_code); |
| 112 | |
| 113 | bytestream2_get_buffer(&s->g, &rgb[pixel_ptr], rle_code); |
| 114 | pixel_ptr += rle_code; |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | static inline void qtrle_decode_2n4bpp(QtrleContext *s, int row_ptr, |
| 120 | int lines_to_change, int bpp) |
| 121 | { |
| 122 | int rle_code, i; |
| 123 | int pixel_ptr; |
| 124 | int row_inc = s->frame->linesize[0]; |
| 125 | uint8_t pi[16]; /* 16 palette indices */ |
| 126 | uint8_t *rgb = s->frame->data[0]; |
| 127 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 128 | int num_pixels = (bpp == 4) ? 8 : 16; |
| 129 | |
| 130 | while (lines_to_change--) { |
| 131 | pixel_ptr = row_ptr + (num_pixels * (bytestream2_get_byte(&s->g) - 1)); |
| 132 | CHECK_PIXEL_PTR(0); |
| 133 | |
| 134 | while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { |
| 135 | if (rle_code == 0) { |
| 136 | /* there's another skip code in the stream */ |
| 137 | pixel_ptr += (num_pixels * (bytestream2_get_byte(&s->g) - 1)); |
| 138 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 139 | } else if (rle_code < 0) { |
| 140 | /* decode the run length code */ |
| 141 | rle_code = -rle_code; |
| 142 | /* get the next 4 bytes from the stream, treat them as palette |
| 143 | * indexes, and output them rle_code times */ |
| 144 | for (i = num_pixels-1; i >= 0; i--) { |
| 145 | pi[num_pixels-1-i] = (bytestream2_peek_byte(&s->g) >> ((i*bpp) & 0x07)) & ((1<<bpp)-1); |
| 146 | bytestream2_skip(&s->g, ((i & ((num_pixels>>2)-1)) == 0)); |
| 147 | } |
| 148 | CHECK_PIXEL_PTR(rle_code * num_pixels); |
| 149 | while (rle_code--) { |
| 150 | memcpy(&rgb[pixel_ptr], &pi, num_pixels); |
| 151 | pixel_ptr += num_pixels; |
| 152 | } |
| 153 | } else { |
| 154 | /* copy the same pixel directly to output 4 times */ |
| 155 | rle_code *= 4; |
| 156 | CHECK_PIXEL_PTR(rle_code*(num_pixels>>2)); |
| 157 | while (rle_code--) { |
| 158 | if(bpp == 4) { |
| 159 | int x = bytestream2_get_byte(&s->g); |
| 160 | rgb[pixel_ptr++] = (x >> 4) & 0x0f; |
| 161 | rgb[pixel_ptr++] = x & 0x0f; |
| 162 | } else { |
| 163 | int x = bytestream2_get_byte(&s->g); |
| 164 | rgb[pixel_ptr++] = (x >> 6) & 0x03; |
| 165 | rgb[pixel_ptr++] = (x >> 4) & 0x03; |
| 166 | rgb[pixel_ptr++] = (x >> 2) & 0x03; |
| 167 | rgb[pixel_ptr++] = x & 0x03; |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | } |
| 172 | row_ptr += row_inc; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | static void qtrle_decode_8bpp(QtrleContext *s, int row_ptr, int lines_to_change) |
| 177 | { |
| 178 | int rle_code; |
| 179 | int pixel_ptr; |
| 180 | int row_inc = s->frame->linesize[0]; |
| 181 | uint8_t pi1, pi2, pi3, pi4; /* 4 palette indexes */ |
| 182 | uint8_t *rgb = s->frame->data[0]; |
| 183 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 184 | |
| 185 | while (lines_to_change--) { |
| 186 | pixel_ptr = row_ptr + (4 * (bytestream2_get_byte(&s->g) - 1)); |
| 187 | CHECK_PIXEL_PTR(0); |
| 188 | |
| 189 | while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { |
| 190 | if (rle_code == 0) { |
| 191 | /* there's another skip code in the stream */ |
| 192 | pixel_ptr += (4 * (bytestream2_get_byte(&s->g) - 1)); |
| 193 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 194 | } else if (rle_code < 0) { |
| 195 | /* decode the run length code */ |
| 196 | rle_code = -rle_code; |
| 197 | /* get the next 4 bytes from the stream, treat them as palette |
| 198 | * indexes, and output them rle_code times */ |
| 199 | pi1 = bytestream2_get_byte(&s->g); |
| 200 | pi2 = bytestream2_get_byte(&s->g); |
| 201 | pi3 = bytestream2_get_byte(&s->g); |
| 202 | pi4 = bytestream2_get_byte(&s->g); |
| 203 | |
| 204 | CHECK_PIXEL_PTR(rle_code * 4); |
| 205 | |
| 206 | while (rle_code--) { |
| 207 | rgb[pixel_ptr++] = pi1; |
| 208 | rgb[pixel_ptr++] = pi2; |
| 209 | rgb[pixel_ptr++] = pi3; |
| 210 | rgb[pixel_ptr++] = pi4; |
| 211 | } |
| 212 | } else { |
| 213 | /* copy the same pixel directly to output 4 times */ |
| 214 | rle_code *= 4; |
| 215 | CHECK_PIXEL_PTR(rle_code); |
| 216 | |
| 217 | bytestream2_get_buffer(&s->g, &rgb[pixel_ptr], rle_code); |
| 218 | pixel_ptr += rle_code; |
| 219 | } |
| 220 | } |
| 221 | row_ptr += row_inc; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | static void qtrle_decode_16bpp(QtrleContext *s, int row_ptr, int lines_to_change) |
| 226 | { |
| 227 | int rle_code; |
| 228 | int pixel_ptr; |
| 229 | int row_inc = s->frame->linesize[0]; |
| 230 | uint16_t rgb16; |
| 231 | uint8_t *rgb = s->frame->data[0]; |
| 232 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 233 | |
| 234 | while (lines_to_change--) { |
| 235 | pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 2; |
| 236 | CHECK_PIXEL_PTR(0); |
| 237 | |
| 238 | while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { |
| 239 | if (rle_code == 0) { |
| 240 | /* there's another skip code in the stream */ |
| 241 | pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 2; |
| 242 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 243 | } else if (rle_code < 0) { |
| 244 | /* decode the run length code */ |
| 245 | rle_code = -rle_code; |
| 246 | rgb16 = bytestream2_get_be16(&s->g); |
| 247 | |
| 248 | CHECK_PIXEL_PTR(rle_code * 2); |
| 249 | |
| 250 | while (rle_code--) { |
| 251 | *(uint16_t *)(&rgb[pixel_ptr]) = rgb16; |
| 252 | pixel_ptr += 2; |
| 253 | } |
| 254 | } else { |
| 255 | CHECK_PIXEL_PTR(rle_code * 2); |
| 256 | |
| 257 | /* copy pixels directly to output */ |
| 258 | while (rle_code--) { |
| 259 | rgb16 = bytestream2_get_be16(&s->g); |
| 260 | *(uint16_t *)(&rgb[pixel_ptr]) = rgb16; |
| 261 | pixel_ptr += 2; |
| 262 | } |
| 263 | } |
| 264 | } |
| 265 | row_ptr += row_inc; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | static void qtrle_decode_24bpp(QtrleContext *s, int row_ptr, int lines_to_change) |
| 270 | { |
| 271 | int rle_code; |
| 272 | int pixel_ptr; |
| 273 | int row_inc = s->frame->linesize[0]; |
| 274 | uint8_t r, g, b; |
| 275 | uint8_t *rgb = s->frame->data[0]; |
| 276 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 277 | |
| 278 | while (lines_to_change--) { |
| 279 | pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 3; |
| 280 | CHECK_PIXEL_PTR(0); |
| 281 | |
| 282 | while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { |
| 283 | if (rle_code == 0) { |
| 284 | /* there's another skip code in the stream */ |
| 285 | pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 3; |
| 286 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 287 | } else if (rle_code < 0) { |
| 288 | /* decode the run length code */ |
| 289 | rle_code = -rle_code; |
| 290 | r = bytestream2_get_byte(&s->g); |
| 291 | g = bytestream2_get_byte(&s->g); |
| 292 | b = bytestream2_get_byte(&s->g); |
| 293 | |
| 294 | CHECK_PIXEL_PTR(rle_code * 3); |
| 295 | |
| 296 | while (rle_code--) { |
| 297 | rgb[pixel_ptr++] = r; |
| 298 | rgb[pixel_ptr++] = g; |
| 299 | rgb[pixel_ptr++] = b; |
| 300 | } |
| 301 | } else { |
| 302 | CHECK_PIXEL_PTR(rle_code * 3); |
| 303 | |
| 304 | /* copy pixels directly to output */ |
| 305 | while (rle_code--) { |
| 306 | rgb[pixel_ptr++] = bytestream2_get_byte(&s->g); |
| 307 | rgb[pixel_ptr++] = bytestream2_get_byte(&s->g); |
| 308 | rgb[pixel_ptr++] = bytestream2_get_byte(&s->g); |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | row_ptr += row_inc; |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | static void qtrle_decode_32bpp(QtrleContext *s, int row_ptr, int lines_to_change) |
| 317 | { |
| 318 | int rle_code; |
| 319 | int pixel_ptr; |
| 320 | int row_inc = s->frame->linesize[0]; |
| 321 | unsigned int argb; |
| 322 | uint8_t *rgb = s->frame->data[0]; |
| 323 | int pixel_limit = s->frame->linesize[0] * s->avctx->height; |
| 324 | |
| 325 | while (lines_to_change--) { |
| 326 | pixel_ptr = row_ptr + (bytestream2_get_byte(&s->g) - 1) * 4; |
| 327 | CHECK_PIXEL_PTR(0); |
| 328 | |
| 329 | while ((rle_code = (int8_t)bytestream2_get_byte(&s->g)) != -1) { |
| 330 | if (rle_code == 0) { |
| 331 | /* there's another skip code in the stream */ |
| 332 | pixel_ptr += (bytestream2_get_byte(&s->g) - 1) * 4; |
| 333 | CHECK_PIXEL_PTR(0); /* make sure pixel_ptr is positive */ |
| 334 | } else if (rle_code < 0) { |
| 335 | /* decode the run length code */ |
| 336 | rle_code = -rle_code; |
| 337 | argb = bytestream2_get_be32(&s->g); |
| 338 | |
| 339 | CHECK_PIXEL_PTR(rle_code * 4); |
| 340 | |
| 341 | while (rle_code--) { |
| 342 | AV_WN32A(rgb + pixel_ptr, argb); |
| 343 | pixel_ptr += 4; |
| 344 | } |
| 345 | } else { |
| 346 | CHECK_PIXEL_PTR(rle_code * 4); |
| 347 | |
| 348 | /* copy pixels directly to output */ |
| 349 | while (rle_code--) { |
| 350 | argb = bytestream2_get_be32(&s->g); |
| 351 | AV_WN32A(rgb + pixel_ptr, argb); |
| 352 | pixel_ptr += 4; |
| 353 | } |
| 354 | } |
| 355 | } |
| 356 | row_ptr += row_inc; |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | static av_cold int qtrle_decode_init(AVCodecContext *avctx) |
| 361 | { |
| 362 | QtrleContext *s = avctx->priv_data; |
| 363 | |
| 364 | s->avctx = avctx; |
| 365 | switch (avctx->bits_per_coded_sample) { |
| 366 | case 1: |
| 367 | case 33: |
| 368 | avctx->pix_fmt = AV_PIX_FMT_MONOWHITE; |
| 369 | break; |
| 370 | |
| 371 | case 2: |
| 372 | case 4: |
| 373 | case 8: |
| 374 | case 34: |
| 375 | case 36: |
| 376 | case 40: |
| 377 | avctx->pix_fmt = AV_PIX_FMT_PAL8; |
| 378 | break; |
| 379 | |
| 380 | case 16: |
| 381 | avctx->pix_fmt = AV_PIX_FMT_RGB555; |
| 382 | break; |
| 383 | |
| 384 | case 24: |
| 385 | avctx->pix_fmt = AV_PIX_FMT_RGB24; |
| 386 | break; |
| 387 | |
| 388 | case 32: |
| 389 | avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| 390 | break; |
| 391 | |
| 392 | default: |
| 393 | av_log (avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n", |
| 394 | avctx->bits_per_coded_sample); |
| 395 | return AVERROR_INVALIDDATA; |
| 396 | } |
| 397 | |
| 398 | s->frame = av_frame_alloc(); |
| 399 | if (!s->frame) |
| 400 | return AVERROR(ENOMEM); |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | static int qtrle_decode_frame(AVCodecContext *avctx, |
| 406 | void *data, int *got_frame, |
| 407 | AVPacket *avpkt) |
| 408 | { |
| 409 | QtrleContext *s = avctx->priv_data; |
| 410 | int header, start_line; |
| 411 | int height, row_ptr; |
| 412 | int has_palette = 0; |
| 413 | int ret; |
| 414 | |
| 415 | bytestream2_init(&s->g, avpkt->data, avpkt->size); |
| 416 | if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) |
| 417 | return ret; |
| 418 | |
| 419 | /* check if this frame is even supposed to change */ |
| 420 | if (avpkt->size < 8) |
| 421 | goto done; |
| 422 | |
| 423 | /* start after the chunk size */ |
| 424 | bytestream2_seek(&s->g, 4, SEEK_SET); |
| 425 | |
| 426 | /* fetch the header */ |
| 427 | header = bytestream2_get_be16(&s->g); |
| 428 | |
| 429 | /* if a header is present, fetch additional decoding parameters */ |
| 430 | if (header & 0x0008) { |
| 431 | if (avpkt->size < 14) |
| 432 | goto done; |
| 433 | start_line = bytestream2_get_be16(&s->g); |
| 434 | bytestream2_skip(&s->g, 2); |
| 435 | height = bytestream2_get_be16(&s->g); |
| 436 | bytestream2_skip(&s->g, 2); |
| 437 | if (height > s->avctx->height - start_line) |
| 438 | goto done; |
| 439 | } else { |
| 440 | start_line = 0; |
| 441 | height = s->avctx->height; |
| 442 | } |
| 443 | row_ptr = s->frame->linesize[0] * start_line; |
| 444 | |
| 445 | switch (avctx->bits_per_coded_sample) { |
| 446 | case 1: |
| 447 | case 33: |
| 448 | qtrle_decode_1bpp(s, row_ptr, height); |
| 449 | break; |
| 450 | |
| 451 | case 2: |
| 452 | case 34: |
| 453 | qtrle_decode_2n4bpp(s, row_ptr, height, 2); |
| 454 | has_palette = 1; |
| 455 | break; |
| 456 | |
| 457 | case 4: |
| 458 | case 36: |
| 459 | qtrle_decode_2n4bpp(s, row_ptr, height, 4); |
| 460 | has_palette = 1; |
| 461 | break; |
| 462 | |
| 463 | case 8: |
| 464 | case 40: |
| 465 | qtrle_decode_8bpp(s, row_ptr, height); |
| 466 | has_palette = 1; |
| 467 | break; |
| 468 | |
| 469 | case 16: |
| 470 | qtrle_decode_16bpp(s, row_ptr, height); |
| 471 | break; |
| 472 | |
| 473 | case 24: |
| 474 | qtrle_decode_24bpp(s, row_ptr, height); |
| 475 | break; |
| 476 | |
| 477 | case 32: |
| 478 | qtrle_decode_32bpp(s, row_ptr, height); |
| 479 | break; |
| 480 | |
| 481 | default: |
| 482 | av_log (s->avctx, AV_LOG_ERROR, "Unsupported colorspace: %d bits/sample?\n", |
| 483 | avctx->bits_per_coded_sample); |
| 484 | break; |
| 485 | } |
| 486 | |
| 487 | if(has_palette) { |
| 488 | const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL); |
| 489 | |
| 490 | if (pal) { |
| 491 | s->frame->palette_has_changed = 1; |
| 492 | memcpy(s->pal, pal, AVPALETTE_SIZE); |
| 493 | } |
| 494 | |
| 495 | /* make the palette available on the way out */ |
| 496 | memcpy(s->frame->data[1], s->pal, AVPALETTE_SIZE); |
| 497 | } |
| 498 | |
| 499 | done: |
| 500 | if ((ret = av_frame_ref(data, s->frame)) < 0) |
| 501 | return ret; |
| 502 | *got_frame = 1; |
| 503 | |
| 504 | /* always report that the buffer was completely consumed */ |
| 505 | return avpkt->size; |
| 506 | } |
| 507 | |
| 508 | static av_cold int qtrle_decode_end(AVCodecContext *avctx) |
| 509 | { |
| 510 | QtrleContext *s = avctx->priv_data; |
| 511 | |
| 512 | av_frame_free(&s->frame); |
| 513 | |
| 514 | return 0; |
| 515 | } |
| 516 | |
| 517 | AVCodec ff_qtrle_decoder = { |
| 518 | .name = "qtrle", |
| 519 | .long_name = NULL_IF_CONFIG_SMALL("QuickTime Animation (RLE) video"), |
| 520 | .type = AVMEDIA_TYPE_VIDEO, |
| 521 | .id = AV_CODEC_ID_QTRLE, |
| 522 | .priv_data_size = sizeof(QtrleContext), |
| 523 | .init = qtrle_decode_init, |
| 524 | .close = qtrle_decode_end, |
| 525 | .decode = qtrle_decode_frame, |
| 526 | .capabilities = CODEC_CAP_DR1, |
| 527 | }; |