| @@ -1,516 +0,0 @@ |
| 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 | | −#include "libavutil/common.h" |
| 28 | | −#include "libavutil/imgutils.h" |
| 29 | | −#include "libavutil/intreadwrite.h" |
| 30 | | −#include "libavutil/opt.h" |
| 31 | | −#include "libavutil/pixfmt.h" |
| 32 | | − |
| 33 | | −#include "avcodec.h" |
| 34 | | −#include "codec_internal.h" |
| 35 | | −#include "decode.h" |
| 36 | | −#include "thread.h" |
| 37 | | − |
| 38 | | −#include <openjpeg.h> |
| 39 | | − |
| 40 | | −#define JP2_SIG_TYPE 0x6A502020 |
| 41 | | −#define JP2_SIG_VALUE 0x0D0A870A |
| 42 | | − |
| 43 | | −// pix_fmts with lower bpp have to be listed before |
| 44 | | −// similar pix_fmts with higher bpp. |
| 45 | | −#define RGB_PIXEL_FORMATS AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, \ |
| 46 | | − AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64 |
| 47 | | − |
| 48 | | −#define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8, \ |
| 49 | | − AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, \ |
| 50 | | − AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16 |
| 51 | | − |
| 52 | | −#define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVA420P, \ |
| 53 | | − AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, \ |
| 54 | | − AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \ |
| 55 | | − AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \ |
| 56 | | − AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \ |
| 57 | | − AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \ |
| 58 | | − AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \ |
| 59 | | − AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \ |
| 60 | | − AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \ |
| 61 | | − AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \ |
| 62 | | − AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16 |
| 63 | | − |
| 64 | | −#define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12 |
| 65 | | − |
| 66 | | −static const enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = { |
| 67 | | − RGB_PIXEL_FORMATS |
| 68 | | −}; |
| 69 | | −static const enum AVPixelFormat libopenjpeg_gray_pix_fmts[] = { |
| 70 | | − GRAY_PIXEL_FORMATS |
| 71 | | −}; |
| 72 | | −static const enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = { |
| 73 | | − YUV_PIXEL_FORMATS |
| 74 | | −}; |
| 75 | | −static const enum AVPixelFormat libopenjpeg_all_pix_fmts[] = { |
| 76 | | − RGB_PIXEL_FORMATS, GRAY_PIXEL_FORMATS, YUV_PIXEL_FORMATS, XYZ_PIXEL_FORMATS |
| 77 | | −}; |
| 78 | | − |
| 79 | | −typedef struct LibOpenJPEGContext { |
| 80 | | − AVClass *class; |
| 81 | | − opj_dparameters_t dec_params; |
| 82 | | − int lowqual; |
| 83 | | −} LibOpenJPEGContext; |
| 84 | | − |
| 85 | | −static void error_callback(const char *msg, void *data) |
| 86 | | −{ |
| 87 | | − av_log(data, AV_LOG_ERROR, "%s", msg); |
| 88 | | −} |
| 89 | | − |
| 90 | | −static void warning_callback(const char *msg, void *data) |
| 91 | | −{ |
| 92 | | − av_log(data, AV_LOG_WARNING, "%s", msg); |
| 93 | | −} |
| 94 | | − |
| 95 | | −static void info_callback(const char *msg, void *data) |
| 96 | | −{ |
| 97 | | − av_log(data, AV_LOG_DEBUG, "%s", msg); |
| 98 | | −} |
| 99 | | − |
| 100 | | −typedef struct BufferReader { |
| 101 | | − int pos; |
| 102 | | − int size; |
| 103 | | − const uint8_t *buffer; |
| 104 | | −} BufferReader; |
| 105 | | − |
| 106 | | −static OPJ_SIZE_T stream_read(void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data) |
| 107 | | −{ |
| 108 | | − BufferReader *reader = user_data; |
| 109 | | − int remaining; |
| 110 | | − |
| 111 | | − if (reader->pos == reader->size) { |
| 112 | | − return (OPJ_SIZE_T)-1; |
| 113 | | − } |
| 114 | | − remaining = reader->size - reader->pos; |
| 115 | | − if (nb_bytes > remaining) { |
| 116 | | − nb_bytes = remaining; |
| 117 | | − } |
| 118 | | − memcpy(out_buffer, reader->buffer + reader->pos, nb_bytes); |
| 119 | | − reader->pos += (int)nb_bytes; |
| 120 | | − return nb_bytes; |
| 121 | | −} |
| 122 | | − |
| 123 | | −static OPJ_OFF_T stream_skip(OPJ_OFF_T nb_bytes, void *user_data) |
| 124 | | −{ |
| 125 | | − BufferReader *reader = user_data; |
| 126 | | − if (nb_bytes < 0) { |
| 127 | | − if (reader->pos == 0) { |
| 128 | | − return (OPJ_SIZE_T)-1; |
| 129 | | − } |
| 130 | | − if (nb_bytes + reader->pos < 0) { |
| 131 | | − nb_bytes = -reader->pos; |
| 132 | | − } |
| 133 | | − } else { |
| 134 | | − int remaining; |
| 135 | | − |
| 136 | | − if (reader->pos == reader->size) { |
| 137 | | − return (OPJ_SIZE_T)-1; |
| 138 | | − } |
| 139 | | − remaining = reader->size - reader->pos; |
| 140 | | − if (nb_bytes > remaining) { |
| 141 | | − nb_bytes = remaining; |
| 142 | | − } |
| 143 | | − } |
| 144 | | − reader->pos += (int)nb_bytes; |
| 145 | | − return nb_bytes; |
| 146 | | −} |
| 147 | | − |
| 148 | | −static OPJ_BOOL stream_seek(OPJ_OFF_T nb_bytes, void *user_data) |
| 149 | | −{ |
| 150 | | − BufferReader *reader = user_data; |
| 151 | | − if (nb_bytes < 0 || nb_bytes > reader->size) { |
| 152 | | − return OPJ_FALSE; |
| 153 | | − } |
| 154 | | − reader->pos = (int)nb_bytes; |
| 155 | | − return OPJ_TRUE; |
| 156 | | −} |
| 157 | | − |
| 158 | | −static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum AVPixelFormat pix_fmt) |
| 159 | | −{ |
| 160 | | − const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| 161 | | − int match = 1; |
| 162 | | − |
| 163 | | − if (desc->nb_components != image->numcomps) { |
| 164 | | − return 0; |
| 165 | | − } |
| 166 | | − |
| 167 | | − switch (desc->nb_components) { |
| 168 | | − case 4: |
| 169 | | − match = match && |
| 170 | | − desc->comp[3].depth >= image->comps[3].prec && |
| 171 | | − 1 == image->comps[3].dx && |
| 172 | | − 1 == image->comps[3].dy; |
| 173 | | − case 3: |
| 174 | | − match = match && |
| 175 | | − desc->comp[2].depth >= image->comps[2].prec && |
| 176 | | − 1 << desc->log2_chroma_w == image->comps[2].dx && |
| 177 | | − 1 << desc->log2_chroma_h == image->comps[2].dy; |
| 178 | | − case 2: |
| 179 | | − match = match && |
| 180 | | − desc->comp[1].depth >= image->comps[1].prec && |
| 181 | | − 1 << desc->log2_chroma_w == image->comps[1].dx && |
| 182 | | − 1 << desc->log2_chroma_h == image->comps[1].dy; |
| 183 | | − case 1: |
| 184 | | − match = match && |
| 185 | | − desc->comp[0].depth >= image->comps[0].prec && |
| 186 | | − 1 == image->comps[0].dx && |
| 187 | | − 1 == image->comps[0].dy; |
| 188 | | − default: |
| 189 | | − break; |
| 190 | | − } |
| 191 | | − |
| 192 | | − return match; |
| 193 | | −} |
| 194 | | − |
| 195 | | −static inline enum AVPixelFormat libopenjpeg_guess_pix_fmt(const opj_image_t *image) { |
| 196 | | − int index; |
| 197 | | − const enum AVPixelFormat *possible_fmts = NULL; |
| 198 | | − int possible_fmts_nb = 0; |
| 199 | | − |
| 200 | | − switch (image->color_space) { |
| 201 | | − case OPJ_CLRSPC_SRGB: |
| 202 | | − possible_fmts = libopenjpeg_rgb_pix_fmts; |
| 203 | | − possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_rgb_pix_fmts); |
| 204 | | − break; |
| 205 | | − case OPJ_CLRSPC_GRAY: |
| 206 | | − possible_fmts = libopenjpeg_gray_pix_fmts; |
| 207 | | − possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_gray_pix_fmts); |
| 208 | | − break; |
| 209 | | − case OPJ_CLRSPC_SYCC: |
| 210 | | − possible_fmts = libopenjpeg_yuv_pix_fmts; |
| 211 | | − possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_yuv_pix_fmts); |
| 212 | | − break; |
| 213 | | − default: |
| 214 | | − possible_fmts = libopenjpeg_all_pix_fmts; |
| 215 | | − possible_fmts_nb = FF_ARRAY_ELEMS(libopenjpeg_all_pix_fmts); |
| 216 | | − break; |
| 217 | | − } |
| 218 | | − |
| 219 | | − for (index = 0; index < possible_fmts_nb; ++index) |
| 220 | | − if (libopenjpeg_matches_pix_fmt(image, possible_fmts[index])) { |
| 221 | | − return possible_fmts[index]; |
| 222 | | − } |
| 223 | | − |
| 224 | | − return AV_PIX_FMT_NONE; |
| 225 | | −} |
| 226 | | − |
| 227 | | −static inline int libopenjpeg_ispacked(enum AVPixelFormat pix_fmt) |
| 228 | | −{ |
| 229 | | − const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); |
| 230 | | − int i, component_plane; |
| 231 | | − |
| 232 | | − if (pix_fmt == AV_PIX_FMT_GRAY16) |
| 233 | | − return 0; |
| 234 | | − |
| 235 | | − component_plane = desc->comp[0].plane; |
| 236 | | − for (i = 1; i < desc->nb_components; i++) |
| 237 | | − if (component_plane != desc->comp[i].plane) |
| 238 | | − return 0; |
| 239 | | − return 1; |
| 240 | | −} |
| 241 | | − |
| 242 | | −static inline void libopenjpeg_copy_to_packed8(AVFrame *picture, opj_image_t *image) { |
| 243 | | − uint8_t *img_ptr; |
| 244 | | − int index, x, y, c; |
| 245 | | − for (y = 0; y < picture->height; y++) { |
| 246 | | − index = y * picture->width; |
| 247 | | − img_ptr = picture->data[0] + y * picture->linesize[0]; |
| 248 | | − for (x = 0; x < picture->width; x++, index++) |
| 249 | | − for (c = 0; c < image->numcomps; c++) |
| 250 | | − *img_ptr++ = 0x80 * image->comps[c].sgnd + image->comps[c].data[index]; |
| 251 | | − } |
| 252 | | −} |
| 253 | | − |
| 254 | | −static inline void libopenjpeg_copy_to_packed16(AVFrame *picture, opj_image_t *image) { |
| 255 | | − uint16_t *img_ptr; |
| 256 | | − const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format); |
| 257 | | − int index, x, y, c; |
| 258 | | − int adjust[4]; |
| 259 | | − for (x = 0; x < image->numcomps; x++) |
| 260 | | − adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift; |
| 261 | | − |
| 262 | | − for (y = 0; y < picture->height; y++) { |
| 263 | | − index = y * picture->width; |
| 264 | | − img_ptr = (uint16_t *) (picture->data[0] + y * picture->linesize[0]); |
| 265 | | − for (x = 0; x < picture->width; x++, index++) |
| 266 | | − for (c = 0; c < image->numcomps; c++) |
| 267 | | − *img_ptr++ = (1 << image->comps[c].prec - 1) * image->comps[c].sgnd + |
| 268 | | − (unsigned)image->comps[c].data[index] << adjust[c]; |
| 269 | | − } |
| 270 | | −} |
| 271 | | − |
| 272 | | −static inline void libopenjpeg_copyto8(AVFrame *picture, opj_image_t *image) { |
| 273 | | − int *comp_data; |
| 274 | | − uint8_t *img_ptr; |
| 275 | | − int index, x, y; |
| 276 | | − |
| 277 | | − for (index = 0; index < image->numcomps; index++) { |
| 278 | | − comp_data = image->comps[index].data; |
| 279 | | − for (y = 0; y < image->comps[index].h; y++) { |
| 280 | | − img_ptr = picture->data[index] + y * picture->linesize[index]; |
| 281 | | − for (x = 0; x < image->comps[index].w; x++) { |
| 282 | | − *img_ptr = 0x80 * image->comps[index].sgnd + *comp_data; |
| 283 | | − img_ptr++; |
| 284 | | − comp_data++; |
| 285 | | − } |
| 286 | | − } |
| 287 | | − } |
| 288 | | −} |
| 289 | | − |
| 290 | | −static inline void libopenjpeg_copyto16(AVFrame *picture, opj_image_t *image) { |
| 291 | | − int *comp_data; |
| 292 | | − uint16_t *img_ptr; |
| 293 | | − const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(picture->format); |
| 294 | | − int index, x, y; |
| 295 | | − int adjust[4]; |
| 296 | | − for (x = 0; x < image->numcomps; x++) |
| 297 | | − adjust[x] = FFMAX(FFMIN(desc->comp[x].depth - image->comps[x].prec, 8), 0) + desc->comp[x].shift; |
| 298 | | − |
| 299 | | − for (index = 0; index < image->numcomps; index++) { |
| 300 | | − comp_data = image->comps[index].data; |
| 301 | | − for (y = 0; y < image->comps[index].h; y++) { |
| 302 | | − img_ptr = (uint16_t *)(picture->data[index] + y * picture->linesize[index]); |
| 303 | | − for (x = 0; x < image->comps[index].w; x++) { |
| 304 | | − *img_ptr = (1 << image->comps[index].prec - 1) * image->comps[index].sgnd + |
| 305 | | − (unsigned)*comp_data << adjust[index]; |
| 306 | | − img_ptr++; |
| 307 | | − comp_data++; |
| 308 | | − } |
| 309 | | − } |
| 310 | | − } |
| 311 | | −} |
| 312 | | − |
| 313 | | −static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx) |
| 314 | | −{ |
| 315 | | − LibOpenJPEGContext *ctx = avctx->priv_data; |
| 316 | | − |
| 317 | | − opj_set_default_decoder_parameters(&ctx->dec_params); |
| 318 | | − return 0; |
| 319 | | −} |
| 320 | | − |
| 321 | | −static int libopenjpeg_decode_frame(AVCodecContext *avctx, AVFrame *picture, |
| 322 | | − int *got_frame, AVPacket *avpkt) |
| 323 | | −{ |
| 324 | | − const uint8_t *buf = avpkt->data; |
| 325 | | − int buf_size = avpkt->size; |
| 326 | | − LibOpenJPEGContext *ctx = avctx->priv_data; |
| 327 | | − const AVPixFmtDescriptor *desc; |
| 328 | | − int width, height, ret; |
| 329 | | − int pixel_size = 0; |
| 330 | | − int ispacked = 0; |
| 331 | | − int i; |
| 332 | | − opj_image_t *image = NULL; |
| 333 | | − BufferReader reader = {0, avpkt->size, avpkt->data}; |
| 334 | | − opj_codec_t *dec = NULL; |
| 335 | | − opj_stream_t *stream = NULL; |
| 336 | | − |
| 337 | | − *got_frame = 0; |
| 338 | | − |
| 339 | | − // Check if input is a raw jpeg2k codestream or in jp2 wrapping |
| 340 | | − if ((AV_RB32(buf) == 12) && |
| 341 | | − (AV_RB32(buf + 4) == JP2_SIG_TYPE) && |
| 342 | | − (AV_RB32(buf + 8) == JP2_SIG_VALUE)) { |
| 343 | | − dec = opj_create_decompress(OPJ_CODEC_JP2); |
| 344 | | − } else { |
| 345 | | − /* If the AVPacket contains a jp2c box, then skip to |
| 346 | | − * the starting byte of the codestream. */ |
| 347 | | − if (AV_RB32(buf + 4) == AV_RB32("jp2c")) |
| 348 | | − buf += 8; |
| 349 | | − dec = opj_create_decompress(OPJ_CODEC_J2K); |
| 350 | | − } |
| 351 | | − |
| 352 | | − if (!dec) { |
| 353 | | − av_log(avctx, AV_LOG_ERROR, "Error initializing decoder.\n"); |
| 354 | | − ret = AVERROR_EXTERNAL; |
| 355 | | − goto done; |
| 356 | | − } |
| 357 | | − |
| 358 | | − if (!opj_set_error_handler(dec, error_callback, avctx) || |
| 359 | | − !opj_set_warning_handler(dec, warning_callback, avctx) || |
| 360 | | − !opj_set_info_handler(dec, info_callback, avctx)) { |
| 361 | | − av_log(avctx, AV_LOG_ERROR, "Error setting decoder handlers.\n"); |
| 362 | | − ret = AVERROR_EXTERNAL; |
| 363 | | − goto done; |
| 364 | | − } |
| 365 | | − |
| 366 | | − ctx->dec_params.cp_layer = ctx->lowqual; |
| 367 | | − ctx->dec_params.cp_reduce = avctx->lowres; |
| 368 | | − |
| 369 | | − // Tie decoder with decoding parameters |
| 370 | | − opj_setup_decoder(dec, &ctx->dec_params); |
| 371 | | − |
| 372 | | − stream = opj_stream_default_create(OPJ_STREAM_READ); |
| 373 | | − |
| 374 | | − if (!stream) { |
| 375 | | − av_log(avctx, AV_LOG_ERROR, |
| 376 | | − "Codestream could not be opened for reading.\n"); |
| 377 | | − ret = AVERROR_EXTERNAL; |
| 378 | | − goto done; |
| 379 | | − } |
| 380 | | − |
| 381 | | − opj_stream_set_read_function(stream, stream_read); |
| 382 | | − opj_stream_set_skip_function(stream, stream_skip); |
| 383 | | − opj_stream_set_seek_function(stream, stream_seek); |
| 384 | | − opj_stream_set_user_data(stream, &reader, NULL); |
| 385 | | − opj_stream_set_user_data_length(stream, avpkt->size); |
| 386 | | − // Decode the header only. |
| 387 | | − ret = !opj_read_header(stream, dec, &image); |
| 388 | | − |
| 389 | | − if (ret) { |
| 390 | | − av_log(avctx, AV_LOG_ERROR, "Error decoding codestream header.\n"); |
| 391 | | − ret = AVERROR_EXTERNAL; |
| 392 | | − goto done; |
| 393 | | − } |
| 394 | | − |
| 395 | | − width = image->x1 - image->x0; |
| 396 | | − height = image->y1 - image->y0; |
| 397 | | − |
| 398 | | − ret = ff_set_dimensions(avctx, width, height); |
| 399 | | − if (ret < 0) |
| 400 | | − goto done; |
| 401 | | − |
| 402 | | − if (avctx->pix_fmt != AV_PIX_FMT_NONE) |
| 403 | | − if (!libopenjpeg_matches_pix_fmt(image, avctx->pix_fmt)) |
| 404 | | − avctx->pix_fmt = AV_PIX_FMT_NONE; |
| 405 | | − |
| 406 | | − if (avctx->pix_fmt == AV_PIX_FMT_NONE) |
| 407 | | − avctx->pix_fmt = libopenjpeg_guess_pix_fmt(image); |
| 408 | | − |
| 409 | | − if (avctx->pix_fmt == AV_PIX_FMT_NONE) { |
| 410 | | − av_log(avctx, AV_LOG_ERROR, "Unable to determine pixel format.\n"); |
| 411 | | − ret = AVERROR_UNKNOWN; |
| 412 | | − goto done; |
| 413 | | − } |
| 414 | | − for (i = 0; i < image->numcomps; i++) |
| 415 | | − if (image->comps[i].prec > avctx->bits_per_raw_sample) |
| 416 | | − avctx->bits_per_raw_sample = image->comps[i].prec; |
| 417 | | − |
| 418 | | − if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0) |
| 419 | | − goto done; |
| 420 | | − |
| 421 | | − ret = !opj_decode(dec, stream, image); |
| 422 | | − |
| 423 | | − if (ret) { |
| 424 | | − av_log(avctx, AV_LOG_ERROR, "Error decoding codestream.\n"); |
| 425 | | − ret = AVERROR_EXTERNAL; |
| 426 | | − goto done; |
| 427 | | − } |
| 428 | | − |
| 429 | | − for (i = 0; i < image->numcomps; i++) { |
| 430 | | − if (!image->comps[i].data) { |
| 431 | | − av_log(avctx, AV_LOG_ERROR, |
| 432 | | − "Image component %d contains no data.\n", i); |
| 433 | | − ret = AVERROR_INVALIDDATA; |
| 434 | | − goto done; |
| 435 | | − } |
| 436 | | − } |
| 437 | | − |
| 438 | | − desc = av_pix_fmt_desc_get(avctx->pix_fmt); |
| 439 | | − pixel_size = desc->comp[0].step; |
| 440 | | − ispacked = libopenjpeg_ispacked(avctx->pix_fmt); |
| 441 | | − |
| 442 | | − switch (pixel_size) { |
| 443 | | − case 1: |
| 444 | | − if (ispacked) { |
| 445 | | − libopenjpeg_copy_to_packed8(picture, image); |
| 446 | | − } else { |
| 447 | | − libopenjpeg_copyto8(picture, image); |
| 448 | | − } |
| 449 | | − break; |
| 450 | | − case 2: |
| 451 | | − if (ispacked) { |
| 452 | | − libopenjpeg_copy_to_packed8(picture, image); |
| 453 | | − } else { |
| 454 | | − libopenjpeg_copyto16(picture, image); |
| 455 | | − } |
| 456 | | − break; |
| 457 | | − case 3: |
| 458 | | − case 4: |
| 459 | | − if (ispacked) { |
| 460 | | − libopenjpeg_copy_to_packed8(picture, image); |
| 461 | | − } |
| 462 | | − break; |
| 463 | | − case 6: |
| 464 | | − case 8: |
| 465 | | − if (ispacked) { |
| 466 | | − libopenjpeg_copy_to_packed16(picture, image); |
| 467 | | − } |
| 468 | | − break; |
| 469 | | − default: |
| 470 | | − avpriv_report_missing_feature(avctx, "Pixel size %d", pixel_size); |
| 471 | | − ret = AVERROR_PATCHWELCOME; |
| 472 | | − goto done; |
| 473 | | − } |
| 474 | | − |
| 475 | | − *got_frame = 1; |
| 476 | | − picture->pict_type = AV_PICTURE_TYPE_I; |
| 477 | | − picture->key_frame = 1; |
| 478 | | − ret = buf_size; |
| 479 | | − |
| 480 | | −done: |
| 481 | | − opj_image_destroy(image); |
| 482 | | − opj_stream_destroy(stream); |
| 483 | | − opj_destroy_codec(dec); |
| 484 | | − return ret; |
| 485 | | −} |
| 486 | | − |
| 487 | | −#define OFFSET(x) offsetof(LibOpenJPEGContext, x) |
| 488 | | −#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM |
| 489 | | − |
| 490 | | −static const AVOption options[] = { |
| 491 | | − { "lowqual", "Limit the number of layers used for decoding", |
| 492 | | − OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD }, |
| 493 | | − { NULL }, |
| 494 | | −}; |
| 495 | | − |
| 496 | | −static const AVClass openjpeg_class = { |
| 497 | | − .class_name = "libopenjpeg", |
| 498 | | − .item_name = av_default_item_name, |
| 499 | | − .option = options, |
| 500 | | − .version = LIBAVUTIL_VERSION_INT, |
| 501 | | −}; |
| 502 | | − |
| 503 | | −const FFCodec ff_libopenjpeg_decoder = { |
| 504 | | − .p.name = "libopenjpeg", |
| 505 | | − CODEC_LONG_NAME("OpenJPEG JPEG 2000"), |
| 506 | | − .p.type = AVMEDIA_TYPE_VIDEO, |
| 507 | | − .p.id = AV_CODEC_ID_JPEG2000, |
| 508 | | − .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS, |
| 509 | | − .p.max_lowres = 31, |
| 510 | | − .p.priv_class = &openjpeg_class, |
| 511 | | − .p.wrapper_name = "libopenjpeg", |
| 512 | | − .caps_internal = FF_CODEC_CAP_NOT_INIT_THREADSAFE, |
| 513 | | − .priv_data_size = sizeof(LibOpenJPEGContext), |
| 514 | | − .init = libopenjpeg_decode_init, |
| 515 | | − FF_CODEC_DECODE_CB(libopenjpeg_decode_frame), |
| 516 | | −}; |