1/* 2 * JPEG 2000 decoding support via OpenJPEG 3 * Copyright (c) 2009 Jaikrishnan Menon <realityman@gmx.net> 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 * JPEG 2000 decoder using libopenjpeg 25 */ 26 27#define OPJ_STATIC 28 29#include "libavutil/common.h" 30#include "libavutil/imgutils.h" 31#include "libavutil/intreadwrite.h" 32#include "libavutil/opt.h" 33#include "libavutil/pixfmt.h" 34 35#include "avcodec.h" 36#include "internal.h" 37#include "thread.h" 38 39#if HAVE_OPENJPEG_1_5_OPENJPEG_H 40# include <openjpeg-1.5/openjpeg.h> 41#else 42# include <openjpeg.h> 43#endif 44 45#define JP2_SIG_TYPE 0x6A502020 46#define JP2_SIG_VALUE 0x0D0A870A 47 48// pix_fmts with lower bpp have to be listed before 49// similar pix_fmts with higher bpp. 50#define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, \ 51 AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64 52 53#define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, \ 54 AV_PIX_FMT_GRAY16 55 56#define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \ 57 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \ 58 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \ 59 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \ 60 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \ 61 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \ 62 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \ 63 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \ 64 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \ 65 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \ 66 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16 67 68#define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12 69 70static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = { 71 RGB_PIXEL_FORMATS 72}; 73static const enum AVPixelFormat libopenjpeg_gray_pix_fmts[] = { 74 GRAY_PIXEL_FORMATS 75}; 76static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = { 77 YUV_PIXEL_FORMATS 78}; 79static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = { 80 RGB_PIXEL_FORMATS, GRAY_PIXEL_FORMATS, YUV_PIXEL_FORMATS, XYZ_PIXEL_FORMATS 81}; 82 83typedef struct { 84 AVClass *class; 85 opj_dparameters_t dec_params; 86 int lowqual; 87} LibOpenJPEGContext; 88 89static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt) 90{ 91 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); 92 int match = 1; 93 94 if (desc->nb_components != image->numcomps) { 95 return 0; 96 } 97 98 switch (desc->nb_components) { 99 case 4: 100 match = match && 101 desc->comp[3].depth_minus1 + 1 >= image->comps[3].prec && 102 1 == image->comps[3].dx && 103 1 == image->comps[3].dy; 104 case 3: 105 match = match && 106 desc->comp[2].depth_minus1 + 1 >= image->comps[2].prec && 107 1 << desc->log2_chroma_w == image->comps[2].dx && 108 1 << desc->log2_chroma_h == image->comps[2].dy; 109 case 2: 110 match = match && 111 desc->comp[1].depth_minus1 + 1 >= image->comps[1].prec && 112 1 << desc->log2_chroma_w == image->comps[1].dx && 113 1 << desc->log2_chroma_h == image->comps[1].dy; 114 case 1: 115 match = match && 116 desc->comp[0].depth_minus1 + 1 >= image->comps[0].prec && 117 1 == image->comps[0].dx && 118 1 == image->comps[0].dy; 119 default: 120 break; 121 } 122 123 return match; 124} 125 126static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) { 127 int index; 128 const enum AVPixelFormat *possible_fmts = NULL; 129 int possible_fmts_nb = 0; 130 131 switch (image->color_space) { 132 case CLRSPC_SRGB: 133 possible_fmts = libopenjpeg_rgb_pix_fmts; 134 possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts); 135 break; 136 case CLRSPC_GRAY: 137 possible_fmts = libopenjpeg_gray_pix_fmts; 138 possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts); 139 break; 140 case CLRSPC_SYCC: 141 possible_fmts = libopenjpeg_yuv_pix_fmts; 142 possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts); 143 break; 144 default: 145 possible_fmts = libopenjpeg_all_pix_fmts; 146 possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts); 147 break; 148 } 149 150 for (index = 0; index < possible_fmts_nb; ++index) 151 if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) { 152 return possible_fmts[index]; 153 } 154 155 return AV_PIX_FMT_NONE; 156} 157 158static inline int libopenjpeg_ispacked(enum AVPixelFormat pix_fmt) 159{ 160 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); 161 int i, component_plane; 162 163 if (pix_fmt == AV_PIX_FMT_GRAY16) 164 return 0; 165 166 component_plane = desc->comp[0].plane; 167 for (i = 1; i < desc->nb_components; i++) 168 if (component_plane != desc->comp[i].plane) 169 return 0; 170 return 1; 171} 172 173static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) { 174 uint8_t *img_ptr; 175 int index, x, y, c; 176 for (y = 0; y < picture->height; y++) { 177 index = y * picture->width; 178 img_ptr = picture->data[0] + y * picture->linesize[0]; 179 for (x = 0; x < picture->width; x++, index++) 180 for (c = 0; c < image->numcomps; c++) 181 *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index]; 182 } 183} 184 185static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) { 186 uint16_t *img_ptr; 187 int index, x, y, c; 188 int adjust[4]; 189 for (x = 0; x < image->numcomps; x++) 190 adjust[x] = FFMAX(FFMIN(av_pix_fmt_desc_get(picture->format)->comp[x].depth_minus1 + 1 - image->comps[x].prec, 8), 0); 191 192 for (y = 0; y < picture->height; y++) { 193 index = y * picture->width; 194 img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]); 195 for (x = 0; x < picture->width; x++, index++) 196 for (c = 0; c < image->numcomps; c++) 197 *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd + 198 (unsigned)image->comps[c].data[index] << adjust[c]; 199 } 200} 201 202static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) { 203 int *comp_data; 204 uint8_t *img_ptr; 205 int index, x, y; 206 207 for (index = 0; index < image->numcomps; index++) { 208 comp_data = image->comps[index].data; 209 for (y = 0; y < image->comps[index].h; y++) { 210 img_ptr = picture->data[index] + y * picture->linesize[index]; 211 for (x = 0; x < image->comps[index].w; x++) { 212 *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data; 213 img_ptr++; 214 comp_data++; 215 } 216 } 217 } 218} 219 220static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) { 221 int *comp_data; 222 uint16_t *img_ptr; 223 int index, x, y; 224 int adjust[4]; 225 for (x = 0; x < image->numcomps; x++) 226 adjust[x] = FFMAX(FFMIN(av_pix_fmt_desc_get(picture->format)->comp[x].depth_minus1 + 1 - image->comps[x].prec, 8), 0); 227 228 for (index = 0; index < image->numcomps; index++) { 229 comp_data = image->comps[index].data; 230 for (y = 0; y < image->comps[index].h; y++) { 231 img_ptr = (uint16_t *)(picture->data[index] + y * picture->linesize[index]); 232 for (x = 0; x < image->comps[index].w; x++) { 233 *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd + 234 (unsigned)*comp_data << adjust[index]; 235 img_ptr++; 236 comp_data++; 237 } 238 } 239 } 240} 241 242static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx) 243{ 244 LibOpenJPEGContext *ctx = avctx->priv_data; 245 246 opj_set_default_decoder_parameters(&ctx->dec_params); 247 return 0; 248} 249 250static int libopenjpeg_decode_frame(AVCodecContext *avctx, 251 void *data, int *got_frame, 252 AVPacket *avpkt) 253{ 254 uint8_t *buf = avpkt->data; 255 int buf_size = avpkt->size; 256 LibOpenJPEGContext *ctx = avctx->priv_data; 257 ThreadFrame frame = { .f = data }; 258 AVFrame *picture = data; 259 const AVPixFmtDescriptor *desc; 260 opj_dinfo_t *dec; 261 opj_cio_t *stream; 262 opj_image_t *image; 263 int width, height, ret; 264 int pixel_size = 0; 265 int ispacked = 0; 266 int i; 267 268 *got_frame = 0; 269 270 // Check if input is a raw jpeg2k codestream or in jp2 wrapping 271 if ((AV_RB32(buf) == 12) && 272 (AV_RB32(buf + 4) == JP2_SIG_TYPE) && 273 (AV_RB32(buf + 8) == JP2_SIG_VALUE)) { 274 dec = opj_create_decompress(CODEC_JP2); 275 } else { 276 /* If the AVPacket contains a jp2c box, then skip to 277 * the starting byte of the codestream. */ 278 if (AV_RB32(buf + 4) == AV_RB32("jp2c")) 279 buf += 8; 280 dec = opj_create_decompress(CODEC_J2K); 281 } 282 283 if (!dec) { 284 av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n"); 285 return AVERROR_UNKNOWN; 286 } 287 opj_set_event_mgr((opj_common_ptr) dec, NULL, NULL); 288 ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER; 289 ctx->dec_params.cp_layer = ctx->lowqual; 290 // Tie decoder with decoding parameters 291 opj_setup_decoder(dec, &ctx->dec_params); 292 stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size); 293 294 if (!stream) { 295 av_log(avctx, AV_LOG_ERROR, 296 "Codestream could not be opened for reading.\n"); 297 opj_destroy_decompress(dec); 298 return AVERROR_UNKNOWN; 299 } 300 301 // Decode the header only. 302 image = opj_decode_with_info(dec, stream, NULL); 303 opj_cio_close(stream); 304 305 if (!image) { 306 av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); 307 opj_destroy_decompress(dec); 308 return AVERROR_UNKNOWN; 309 } 310 311 width = image->x1 - image->x0; 312 height = image->y1 - image->y0; 313 314 ret = ff_set_dimensions(avctx, width, height); 315 if (ret < 0) 316 goto done; 317 318 if (avctx->pix_fmt != AV_PIX_FMT_NONE) 319 if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt)) 320 avctx->pix_fmt = AV_PIX_FMT_NONE; 321 322 if (avctx->pix_fmt == AV_PIX_FMT_NONE) 323 avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image); 324 325 if (avctx->pix_fmt == AV_PIX_FMT_NONE) { 326 av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format\n"); 327 goto done; 328 } 329 for (i = 0; i < image->numcomps; i++) 330 if (image->comps[i].prec > avctx->bits_per_raw_sample) 331 avctx->bits_per_raw_sample = image->comps[i].prec; 332 333 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) 334 goto done; 335 336 ctx->dec_params.cp_limit_decoding = NO_LIMITATION; 337 ctx->dec_params.cp_reduce = avctx->lowres; 338 // Tie decoder with decoding parameters. 339 opj_setup_decoder(dec, &ctx->dec_params); 340 stream = opj_cio_open((opj_common_ptr) dec, buf, buf_size); 341 if (!stream) { 342 av_log(avctx, AV_LOG_ERROR, 343 "Codestream could not be opened for reading.\n"); 344 ret = AVERROR_UNKNOWN; 345 goto done; 346 } 347 348 opj_image_destroy(image); 349 // Decode the codestream 350 image = opj_decode_with_info(dec, stream, NULL); 351 opj_cio_close(stream); 352 353 if (!image) { 354 av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); 355 ret = AVERROR_UNKNOWN; 356 goto done; 357 } 358 359 desc = av_pix_fmt_desc_get(avctx->pix_fmt); 360 pixel_size = desc->comp[0].step_minus1 + 1; 361 ispacked = libopenjpeg_ispacked(avctx->pix_fmt); 362 363 switch (pixel_size) { 364 case 1: 365 if (ispacked) { 366 libopenjpeg_copy_to_packed8(picture, image); 367 } else { 368 libopenjpeg_copyto8(picture, image); 369 } 370 break; 371 case 2: 372 if (ispacked) { 373 libopenjpeg_copy_to_packed8(picture, image); 374 } else { 375 libopenjpeg_copyto16(picture, image); 376 } 377 break; 378 case 3: 379 case 4: 380 if (ispacked) { 381 libopenjpeg_copy_to_packed8(picture, image); 382 } 383 break; 384 case 6: 385 case 8: 386 if (ispacked) { 387 libopenjpeg_copy_to_packed16(picture, image); 388 } 389 break; 390 default: 391 av_log(avctx, AV_LOG_ERROR, "unsupported pixel size %d\n", pixel_size); 392 ret = AVERROR_PATCHWELCOME; 393 goto done; 394 } 395 396 *got_frame = 1; 397 ret = buf_size; 398 399done: 400 opj_image_destroy(image); 401 opj_destroy_decompress(dec); 402 return ret; 403} 404 405#define OFFSET(x) offsetof(LibOpenJPEGContext, x) 406#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM 407 408static const AVOption options[] = { 409 { "lowqual", "Limit the number of layers used for decoding", 410 OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD }, 411 { NULL }, 412}; 413 414static const AVClass openjpeg_class = { 415 .class_name = "libopenjpeg", 416 .item_name = av_default_item_name, 417 .option = options, 418 .version = LIBAVUTIL_VERSION_INT, 419}; 420 421AVCodec ff_libopenjpeg_decoder = { 422 .name = "libopenjpeg", 423 .long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"), 424 .type = AVMEDIA_TYPE_VIDEO, 425 .id = AV_CODEC_ID_JPEG2000, 426 .priv_data_size = sizeof(LibOpenJPEGContext), 427 .init = libopenjpeg_decode_init, 428 .decode = libopenjpeg_decode_frame, 429 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, 430 .max_lowres = 31, 431 .priv_class = &openjpeg_class, 432}; 433