src/image-load-j2k.cc

   1 /*
   2  * Copyright (C) 20019 - The Geeqie Team
   3  *
   4  * Author: Colin Clark
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <config.h>
  22
  23 #ifdef HAVE_J2K
  24
  25 #include "image-load-j2k.h"
  26
  27 #include <openjpeg.h>
  28
  29 #include "debug.h"
  30 #include "image-load.h"
  31 #include "intl.h"
  32 #include "misc.h"
  33
  34 struct ImageLoaderJ2K {
  35         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  36         ImageLoaderBackendCbSize size_cb;
  37         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  38         gpointer data;
  39         GdkPixbuf *pixbuf;
  40         guint requested_width;
  41         guint requested_height;
  42         gboolean abort;
  43 };
  44
  45 static void free_buffer(guchar *pixels, gpointer)
  46 {
  47         g_free (pixels);
  48 }
  49
  50 struct opj_buffer_info_t {
  51     OPJ_BYTE* buf;
  52     OPJ_BYTE* cur;
  53     OPJ_SIZE_T len;
  54 };
  55
  56 static OPJ_SIZE_T opj_read_from_buffer (void* pdst, OPJ_SIZE_T len, opj_buffer_info_t* psrc)
  57 {
  58     OPJ_SIZE_T n = psrc->buf + psrc->len - psrc->cur;
  59
  60     if (n) {
  61         if (n > len)
  62             n = len;
  63
  64         memcpy (pdst, psrc->cur, n);
  65         psrc->cur += n;
  66     }
  67     else
  68         n = static_cast<OPJ_SIZE_T>(-1);
  69
  70     return n;
  71 }
  72
  73 static OPJ_SIZE_T opj_write_to_buffer (void* p_buffer, OPJ_SIZE_T p_nb_bytes,
  74                      opj_buffer_info_t* p_source_buffer)
  75 {
  76     void* pbuf = p_source_buffer->buf;
  77     void* pcur = p_source_buffer->cur;
  78
  79     OPJ_SIZE_T len = p_source_buffer->len;
  80
  81     if (0 == len)
  82         len = 1;
  83
  84     OPJ_SIZE_T dist = static_cast<guchar *>(pcur) - static_cast<guchar *>(pbuf);
  85     OPJ_SIZE_T n = len - dist;
  86     g_assert (dist <= len);
  87
  88     while (n < p_nb_bytes) {
  89         len *= 2;
  90         n = len - dist;
  91     }
  92
  93     if (len != p_source_buffer->len) {
  94         pbuf = malloc (len);
  95
  96         if (nullptr == pbuf)
  97             return static_cast<OPJ_SIZE_T>(-1);
  98
  99         if (p_source_buffer->buf) {
 100             memcpy (pbuf, p_source_buffer->buf, dist);
 101             free (p_source_buffer->buf);
 102         }
 103
 104         p_source_buffer->buf = static_cast<OPJ_BYTE *>(pbuf);
 105         p_source_buffer->cur = static_cast<guchar *>(pbuf) + dist;
 106         p_source_buffer->len = len;
 107     }
 108
 109     memcpy (p_source_buffer->cur, p_buffer, p_nb_bytes);
 110     p_source_buffer->cur += p_nb_bytes;
 111
 112     return p_nb_bytes;
 113 }
 114
 115 static OPJ_SIZE_T opj_skip_from_buffer (OPJ_SIZE_T len, opj_buffer_info_t* psrc)
 116 {
 117     OPJ_SIZE_T n = psrc->buf + psrc->len - psrc->cur;
 118
 119     if (n) {
 120         if (n > len)
 121             n = len;
 122
 123         psrc->cur += len;
 124     }
 125     else
 126         n = static_cast<OPJ_SIZE_T>(-1);
 127
 128     return n;
 129 }
 130
 131 static OPJ_BOOL opj_seek_from_buffer (OPJ_OFF_T len, opj_buffer_info_t* psrc)
 132 {
 133     OPJ_SIZE_T n = psrc->len;
 134
 135     if (n > static_cast<gulong>(len))
 136         n = len;
 137
 138     psrc->cur = psrc->buf + n;
 139
 140     return OPJ_TRUE;
 141 }
 142
 143 opj_stream_t* OPJ_CALLCONV opj_stream_create_buffer_stream (opj_buffer_info_t* psrc, OPJ_BOOL input)
 144 {
 145     if (!psrc)
 146         return nullptr;
 147
 148     opj_stream_t* ps = opj_stream_default_create (input);
 149
 150     if (nullptr == ps)
 151         return nullptr;
 152
 153     opj_stream_set_user_data        (ps, psrc, nullptr);
 154     opj_stream_set_user_data_length (ps, psrc->len);
 155
 156     if (input)
 157         opj_stream_set_read_function (
 158             ps, reinterpret_cast<opj_stream_read_fn>(opj_read_from_buffer));
 159     else
 160         opj_stream_set_write_function(
 161             ps,reinterpret_cast<opj_stream_write_fn>(opj_write_to_buffer));
 162
 163     opj_stream_set_skip_function (
 164         ps, reinterpret_cast<opj_stream_skip_fn>(opj_skip_from_buffer));
 165
 166     opj_stream_set_seek_function (
 167         ps, reinterpret_cast<opj_stream_seek_fn>(opj_seek_from_buffer));
 168
 169     return ps;
 170 }
 171
 172 static gboolean image_loader_j2k_load(gpointer loader, const guchar *buf, gsize count, GError **)
 173 {
 174         auto ld = static_cast<ImageLoaderJ2K *>(loader);
 175         opj_stream_t *stream;
 176         opj_codec_t *codec;
 177         opj_dparameters_t parameters;
 178         opj_image_t *image;
 179         gint width;
 180         gint height;
 181         gint num_components;
 182         gint i;
 183         gint j;
 184         gint k;
 185         guchar *pixels;
 186         gint  bytes_per_pixel;
 187         opj_buffer_info_t *decode_buffer;
 188     guchar *buf_copy;
 189
 190         stream = nullptr;
 191         codec = nullptr;
 192         image = nullptr;
 193
 194         buf_copy = static_cast<guchar *>(g_malloc(count));
 195         memcpy(buf_copy, buf, count);
 196
 197         decode_buffer = g_new0(opj_buffer_info_t, 1);
 198         decode_buffer->buf = buf_copy;
 199         decode_buffer->len = count;
 200         decode_buffer->cur = buf_copy;
 201
 202         stream = opj_stream_create_buffer_stream(decode_buffer, OPJ_TRUE);
 203
 204         if (!stream)
 205                 {
 206                 log_printf(_("Could not open file for reading"));
 207                 return FALSE;
 208                 }
 209
 210         if (memcmp(buf_copy + 20, "jp2", 3) == 0)
 211                 {
 212                 codec = opj_create_decompress(OPJ_CODEC_JP2);
 213                 }
 214         else
 215                 {
 216                 log_printf(_("Unknown jpeg2000 decoder type"));
 217                 return FALSE;
 218                 }
 219
 220         opj_set_default_decoder_parameters(&parameters);
 221         if (opj_setup_decoder (codec, &parameters) != OPJ_TRUE)
 222                 {
 223                 log_printf(_("Couldn't set parameters on decoder for file."));
 224                 return FALSE;
 225                 }
 226
 227         opj_codec_set_threads(codec, get_cpu_cores());
 228
 229         if (opj_read_header(stream, codec, &image) != OPJ_TRUE)
 230                 {
 231                 log_printf(_("Couldn't read JP2 header from file"));
 232                 return FALSE;
 233                 }
 234
 235         if (opj_decode(codec, stream, image) != OPJ_TRUE)
 236                 {
 237                 log_printf(_("Couldn't decode JP2 image in file"));
 238                 return FALSE;
 239                 }
 240
 241         if (opj_end_decompress(codec, stream) != OPJ_TRUE)
 242                 {
 243                 log_printf(_("Couldn't decompress JP2 image in file"));
 244                 return FALSE;
 245                 }
 246
 247         num_components = image->numcomps;
 248         if (num_components != 3)
 249                 {
 250                 log_printf(_("JP2 image not rgb"));
 251                 return FALSE;
 252                 }
 253
 254         width = image->comps[0].w;
 255         height = image->comps[0].h;
 256
 257         bytes_per_pixel = 3;
 258
 259         pixels = g_new0(guchar, width * bytes_per_pixel * height);
 260         for (i = 0; i < height; i++)
 261                 {
 262                 for (j = 0; j < num_components; j++)
 263                         {
 264                         for (k = 0; k < width; k++)
 265                                 {
 266                                 pixels[(k * bytes_per_pixel + j) + (i * width * bytes_per_pixel)] =   image->comps[j].data[i * width + k];
 267                                 }
 268                         }
 269                 }
 270
 271         ld->pixbuf = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, FALSE , 8, width, height, width * bytes_per_pixel, free_buffer, nullptr);
 272
 273         ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
 274
 275         g_free(decode_buffer);
 276         g_free(buf_copy);
 277         if (image)
 278                 opj_image_destroy (image);
 279         if (codec)
 280                 opj_destroy_codec (codec);
 281         if (stream)
 282                 opj_stream_destroy (stream);
 283
 284         return TRUE;
 285 }
 286
 287 static gpointer image_loader_j2k_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
 288 {
 289         auto loader = g_new0(ImageLoaderJ2K, 1);
 290         loader->area_updated_cb = area_updated_cb;
 291         loader->size_cb = size_cb;
 292         loader->area_prepared_cb = area_prepared_cb;
 293         loader->data = data;
 294         return loader;
 295 }
 296
 297 static void image_loader_j2k_set_size(gpointer loader, int width, int height)
 298 {
 299         auto ld = static_cast<ImageLoaderJ2K *>(loader);
 300         ld->requested_width = width;
 301         ld->requested_height = height;
 302 }
 303
 304 static GdkPixbuf* image_loader_j2k_get_pixbuf(gpointer loader)
 305 {
 306         auto ld = static_cast<ImageLoaderJ2K *>(loader);
 307         return ld->pixbuf;
 308 }
 309
 310 static gchar* image_loader_j2k_get_format_name(gpointer)
 311 {
 312         return g_strdup("j2k");
 313 }
 314
 315 static gchar** image_loader_j2k_get_format_mime_types(gpointer)
 316 {
 317         static const gchar *mime[] = {"image/jp2", nullptr};
 318         return g_strdupv(const_cast<gchar **>(mime));
 319 }
 320
 321 static gboolean image_loader_j2k_close(gpointer, GError **)
 322 {
 323         return TRUE;
 324 }
 325
 326 static void image_loader_j2k_abort(gpointer loader)
 327 {
 328         auto ld = static_cast<ImageLoaderJ2K *>(loader);
 329         ld->abort = TRUE;
 330 }
 331
 332 static void image_loader_j2k_free(gpointer loader)
 333 {
 334         auto ld = static_cast<ImageLoaderJ2K *>(loader);
 335         if (ld->pixbuf) g_object_unref(ld->pixbuf);
 336         g_free(ld);
 337 }
 338
 339 void image_loader_backend_set_j2k(ImageLoaderBackend *funcs)
 340 {
 341         funcs->loader_new = image_loader_j2k_new;
 342         funcs->set_size = image_loader_j2k_set_size;
 343         funcs->load = image_loader_j2k_load;
 344         funcs->write = nullptr;
 345         funcs->get_pixbuf = image_loader_j2k_get_pixbuf;
 346         funcs->close = image_loader_j2k_close;
 347         funcs->abort = image_loader_j2k_abort;
 348         funcs->free = image_loader_j2k_free;
 349         funcs->get_format_name = image_loader_j2k_get_format_name;
 350         funcs->get_format_mime_types = image_loader_j2k_get_format_mime_types;
 351 }
 352
 353 #endif
 354 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */