+++ /dev/null
-/*
- * Copyright (C) 20019 - The Geeqie Team
- *
- * Author: Colin Clark
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "main.h"
-
-#include "image-load.h"
-#include "image_load_j2k.h"
-
-#include "misc.h"
-
-#ifdef HAVE_J2K
-
-#include <sys/sysinfo.h>
-#include "openjpeg.h"
-
-typedef struct _ImageLoaderJ2K ImageLoaderJ2K;
-struct _ImageLoaderJ2K {
- ImageLoaderBackendCbAreaUpdated area_updated_cb;
- ImageLoaderBackendCbSize size_cb;
- ImageLoaderBackendCbAreaPrepared area_prepared_cb;
- gpointer data;
- GdkPixbuf *pixbuf;
- guint requested_width;
- guint requested_height;
- gboolean abort;
-};
-
-static void free_buffer(guchar *pixels, gpointer data)
-{
- g_free (pixels);
-}
-
-typedef struct opj_buffer_info {
- OPJ_BYTE* buf;
- OPJ_BYTE* cur;
- OPJ_SIZE_T len;
-} opj_buffer_info_t;
-
-static OPJ_SIZE_T opj_read_from_buffer (void* pdst, OPJ_SIZE_T len, opj_buffer_info_t* psrc)
-{
- OPJ_SIZE_T n = psrc->buf + psrc->len - psrc->cur;
-
- if (n) {
- if (n > len)
- n = len;
-
- memcpy (pdst, psrc->cur, n);
- psrc->cur += n;
- }
- else
- n = (OPJ_SIZE_T)-1;
-
- return n;
-}
-
-static OPJ_SIZE_T opj_write_to_buffer (void* p_buffer, OPJ_SIZE_T p_nb_bytes,
- opj_buffer_info_t* p_source_buffer)
-{
- void* pbuf = p_source_buffer->buf;
- void* pcur = p_source_buffer->cur;
-
- OPJ_SIZE_T len = p_source_buffer->len;
-
- if (0 == len)
- len = 1;
-
- OPJ_SIZE_T dist = pcur - pbuf, n = len - dist;
- g_assert (dist <= len);
-
- while (n < p_nb_bytes) {
- len *= 2;
- n = len - dist;
- }
-
- if (len != p_source_buffer->len) {
- pbuf = malloc (len);
-
- if (0 == pbuf)
- return (OPJ_SIZE_T)-1;
-
- if (p_source_buffer->buf) {
- memcpy (pbuf, p_source_buffer->buf, dist);
- free (p_source_buffer->buf);
- }
-
- p_source_buffer->buf = pbuf;
- p_source_buffer->cur = pbuf + dist;
- p_source_buffer->len = len;
- }
-
- memcpy (p_source_buffer->cur, p_buffer, p_nb_bytes);
- p_source_buffer->cur += p_nb_bytes;
-
- return p_nb_bytes;
-}
-
-static OPJ_SIZE_T opj_skip_from_buffer (OPJ_SIZE_T len, opj_buffer_info_t* psrc)
-{
- OPJ_SIZE_T n = psrc->buf + psrc->len - psrc->cur;
-
- if (n) {
- if (n > len)
- n = len;
-
- psrc->cur += len;
- }
- else
- n = (OPJ_SIZE_T)-1;
-
- return n;
-}
-
-static OPJ_BOOL opj_seek_from_buffer (OPJ_OFF_T len, opj_buffer_info_t* psrc)
-{
- OPJ_SIZE_T n = psrc->len;
-
- if (n > len)
- n = len;
-
- psrc->cur = psrc->buf + n;
-
- return OPJ_TRUE;
-}
-
-opj_stream_t* OPJ_CALLCONV opj_stream_create_buffer_stream (opj_buffer_info_t* psrc, OPJ_BOOL input)
-{
- if (!psrc)
- return 0;
-
- opj_stream_t* ps = opj_stream_default_create (input);
-
- if (0 == ps)
- return 0;
-
- opj_stream_set_user_data (ps, psrc, 0);
- opj_stream_set_user_data_length (ps, psrc->len);
-
- if (input)
- opj_stream_set_read_function (
- ps, (opj_stream_read_fn)opj_read_from_buffer);
- else
- opj_stream_set_write_function(
- ps,(opj_stream_write_fn) opj_write_to_buffer);
-
- opj_stream_set_skip_function (
- ps, (opj_stream_skip_fn)opj_skip_from_buffer);
-
- opj_stream_set_seek_function (
- ps, (opj_stream_seek_fn)opj_seek_from_buffer);
-
- return ps;
-}
-
-static gboolean image_loader_j2k_load(gpointer loader, const guchar *buf, gsize count, GError **error)
-{
- ImageLoaderJ2K *ld = (ImageLoaderJ2K *) loader;
- ImageLoader *il = ld->data;
- opj_stream_t *stream;
- opj_codec_t *codec;
- opj_dparameters_t parameters;
- opj_image_t *image;
- gint width;
- gint height;
- gint num_components;
- gint i, j, k;
- guchar *pixels;
- gint bytes_per_pixel;
- opj_buffer_info_t *decode_buffer;
- guchar *buf_copy;
-
- stream = NULL;
- codec = NULL;
- image = NULL;
-
- buf_copy = (guchar *) g_malloc(count);
- memcpy(buf_copy, buf, count);
-
- decode_buffer = g_new0(opj_buffer_info_t, 1);
- decode_buffer->buf = buf_copy;
- decode_buffer->len = count;
- decode_buffer->cur = buf_copy;
-
- stream = opj_stream_create_buffer_stream(decode_buffer, OPJ_TRUE);
-
- if (!stream)
- {
- log_printf(_("Could not open file for reading"));
- return FALSE;
- }
-
- if (memcmp(buf_copy + 20, "jp2", 3) == 0)
- {
- codec = opj_create_decompress(OPJ_CODEC_JP2);
- }
- else
- {
- log_printf(_("Unknown jpeg2000 decoder type"));
- return FALSE;
- }
-
- opj_set_default_decoder_parameters(¶meters);
- if (opj_setup_decoder (codec, ¶meters) != OPJ_TRUE)
- {
- log_printf(_("Couldn't set parameters on decoder for file."));
- return FALSE;
- }
-
- opj_codec_set_threads(codec, get_cpu_cores());
-
- if (opj_read_header(stream, codec, &image) != OPJ_TRUE)
- {
- log_printf(_("Couldn't read JP2 header from file"));
- return FALSE;
- }
-
- if (opj_decode(codec, stream, image) != OPJ_TRUE)
- {
- log_printf(_("Couldn't decode JP2 image in file"));
- return FALSE;
- }
-
- if (opj_end_decompress(codec, stream) != OPJ_TRUE)
- {
- log_printf(_("Couldn't decompress JP2 image in file"));
- return FALSE;
- }
-
- num_components = image->numcomps;
- if (num_components != 3)
- {
- log_printf(_("JP2 image not rgb"));
- return FALSE;
- }
-
- width = image->comps[0].w;
- height = image->comps[0].h;
-
- bytes_per_pixel = 3;
-
- pixels = g_new0(guchar, width * bytes_per_pixel * height);
- for (i = 0; i < height; i++)
- {
- for (j = 0; j < num_components; j++)
- {
- for (k = 0; k < width; k++)
- {
- pixels[(k * bytes_per_pixel + j) + (i * width * bytes_per_pixel)] = image->comps[j].data[i * width + k];
- }
- }
- }
-
- ld->pixbuf = gdk_pixbuf_new_from_data(pixels, GDK_COLORSPACE_RGB, FALSE , 8, width, height, width * bytes_per_pixel, free_buffer, NULL);
-
- ld->area_updated_cb(loader, 0, 0, width, height, ld->data);
-
- g_free(decode_buffer);
- g_free(buf_copy);
- if (image)
- opj_image_destroy (image);
- if (codec)
- opj_destroy_codec (codec);
- if (stream)
- opj_stream_destroy (stream);
-
- return TRUE;
-}
-
-static gpointer image_loader_j2k_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
-{
- ImageLoaderJ2K *loader = g_new0(ImageLoaderJ2K, 1);
- loader->area_updated_cb = area_updated_cb;
- loader->size_cb = size_cb;
- loader->area_prepared_cb = area_prepared_cb;
- loader->data = data;
- return (gpointer) loader;
-}
-
-static void image_loader_j2k_set_size(gpointer loader, int width, int height)
-{
- ImageLoaderJ2K *ld = (ImageLoaderJ2K *) loader;
- ld->requested_width = width;
- ld->requested_height = height;
-}
-
-static GdkPixbuf* image_loader_j2k_get_pixbuf(gpointer loader)
-{
- ImageLoaderJ2K *ld = (ImageLoaderJ2K *) loader;
- return ld->pixbuf;
-}
-
-static gchar* image_loader_j2k_get_format_name(gpointer loader)
-{
- return g_strdup("j2k");
-}
-
-static gchar** image_loader_j2k_get_format_mime_types(gpointer loader)
-{
- static gchar *mime[] = {"image/jp2", NULL};
- return g_strdupv(mime);
-}
-
-static gboolean image_loader_j2k_close(gpointer loader, GError **error)
-{
- return TRUE;
-}
-
-static void image_loader_j2k_abort(gpointer loader)
-{
- ImageLoaderJ2K *ld = (ImageLoaderJ2K *) loader;
- ld->abort = TRUE;
-}
-
-static void image_loader_j2k_free(gpointer loader)
-{
- ImageLoaderJ2K *ld = (ImageLoaderJ2K *) loader;
- if (ld->pixbuf) g_object_unref(ld->pixbuf);
- g_free(ld);
-}
-
-void image_loader_backend_set_j2k(ImageLoaderBackend *funcs)
-{
- funcs->loader_new = image_loader_j2k_new;
- funcs->set_size = image_loader_j2k_set_size;
- funcs->load = image_loader_j2k_load;
- funcs->write = NULL;
- funcs->get_pixbuf = image_loader_j2k_get_pixbuf;
- funcs->close = image_loader_j2k_close;
- funcs->abort = image_loader_j2k_abort;
- funcs->free = image_loader_j2k_free;
- funcs->get_format_name = image_loader_j2k_get_format_name;
- funcs->get_format_mime_types = image_loader_j2k_get_format_mime_types;
-}
-
-#endif
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff