2 * Copyright (C) 2021- The Geeqie Team
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.
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.
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.
23 * Copyright (c) the JPEG XL Project Authors.
24 * All rights reserved.
26 * Redistribution and use in source and binary forms, with or without
27 * modification, are permitted provided that the following conditions are met:
29 * 1. Redistributions of source code must retain the above copyright notice, this
30 * list of conditions and the following disclaimer.
32 * 2. Redistributions in binary form must reproduce the above copyright notice,
33 * this list of conditions and the following disclaimer in the documentation
34 * and/or other materials provided with the distribution.
36 * 3. Neither the name of the copyright holder nor the names of its
37 * contributors may be used to endorse or promote products derived from
38 * this software without specific prior written permission.
40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
41 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
43 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
46 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
47 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
49 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55 #include "image-load.h"
56 #include "image-load-jpegxl.h"
62 #include "jxl/decode.h"
64 struct ImageLoaderJPEGXL {
65 ImageLoaderBackendCbAreaUpdated area_updated_cb;
66 ImageLoaderBackendCbSize size_cb;
67 ImageLoaderBackendCbAreaPrepared area_prepared_cb;
70 guint requested_width;
71 guint requested_height;
75 static void free_buffer(guchar *pixels, gpointer)
80 static uint8_t *JxlMemoryToPixels(const uint8_t *next_in, size_t size, size_t &xsize, size_t &ysize, size_t &stride)
82 std::unique_ptr<JxlDecoder, decltype(&JxlDecoderDestroy)> dec{JxlDecoderCreate(nullptr), JxlDecoderDestroy};
85 log_printf("JxlDecoderCreate failed\n");
88 if (JXL_DEC_SUCCESS != JxlDecoderSubscribeEvents(dec.get(), JXL_DEC_BASIC_INFO | JXL_DEC_FULL_IMAGE))
90 log_printf("JxlDecoderSubscribeEvents failed\n");
94 /* Avoid compiler warning - used uninitialized */
95 /* This file will be replaced by libjxl at some time */
99 std::unique_ptr<uint8_t, decltype(&free)> pixels{nullptr, free};
101 JxlPixelFormat format = {4, JXL_TYPE_UINT8, JXL_NATIVE_ENDIAN, 0};
102 JxlDecoderSetInput(dec.get(), next_in, size);
106 JxlDecoderStatus status = JxlDecoderProcessInput(dec.get());
111 log_printf("Decoder error\n");
113 case JXL_DEC_NEED_MORE_INPUT:
114 log_printf("Error, already provided all input\n");
116 case JXL_DEC_BASIC_INFO:
117 if (JXL_DEC_SUCCESS != JxlDecoderGetBasicInfo(dec.get(), &info))
119 log_printf("JxlDecoderGetBasicInfo failed\n");
124 stride = info.xsize * 4;
126 case JXL_DEC_NEED_IMAGE_OUT_BUFFER:
129 if (JXL_DEC_SUCCESS != JxlDecoderImageOutBufferSize(dec.get(), &format, &buffer_size))
131 log_printf("JxlDecoderImageOutBufferSize failed\n");
134 if (buffer_size != stride * ysize)
136 log_printf("Invalid out buffer size %zu %zu\n", buffer_size, stride * ysize);
139 size_t pixels_buffer_size = buffer_size * sizeof(uint8_t);
140 pixels.reset(static_cast<uint8_t *>(malloc(pixels_buffer_size)));
141 if (JXL_DEC_SUCCESS != JxlDecoderSetImageOutBuffer(dec.get(), &format, pixels.get(), pixels_buffer_size))
143 log_printf("JxlDecoderSetImageOutBuffer failed\n");
148 case JXL_DEC_FULL_IMAGE:
149 // This means the decoder has decoded all pixels into the buffer.
150 return pixels.release();
151 case JXL_DEC_SUCCESS:
152 log_printf("Decoding finished before receiving pixel data\n");
155 log_printf("Unexpected decoder status: %d\n", status);
163 static gboolean image_loader_jpegxl_load(gpointer loader, const guchar *buf, gsize count, GError **)
165 auto ld = static_cast<ImageLoaderJPEGXL *>(loader);
166 gboolean ret = FALSE;
170 uint8_t *decoded = nullptr;
172 decoded = JxlMemoryToPixels(buf, count, xsize, ysize, stride);
176 ld->pixbuf = gdk_pixbuf_new_from_data(decoded, GDK_COLORSPACE_RGB, TRUE, 8, xsize, ysize, stride, free_buffer, nullptr);
178 ld->area_updated_cb(loader, 0, 0, xsize, ysize, ld->data);
186 static gpointer image_loader_jpegxl_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
188 auto loader = g_new0(ImageLoaderJPEGXL, 1);
189 loader->area_updated_cb = area_updated_cb;
190 loader->size_cb = size_cb;
191 loader->area_prepared_cb = area_prepared_cb;
196 static void image_loader_jpegxl_set_size(gpointer loader, int width, int height)
198 auto ld = static_cast<ImageLoaderJPEGXL *>(loader);
199 ld->requested_width = width;
200 ld->requested_height = height;
203 static GdkPixbuf* image_loader_jpegxl_get_pixbuf(gpointer loader)
205 auto ld = static_cast<ImageLoaderJPEGXL *>(loader);
209 static gchar* image_loader_jpegxl_get_format_name(gpointer)
211 return g_strdup("jxl");
214 static gchar** image_loader_jpegxl_get_format_mime_types(gpointer)
216 static const gchar *mime[] = {"image/jxl", nullptr};
217 return g_strdupv(const_cast<gchar **>(mime));
220 static gboolean image_loader_jpegxl_close(gpointer, GError **)
225 static void image_loader_jpegxl_abort(gpointer loader)
227 auto ld = static_cast<ImageLoaderJPEGXL *>(loader);
231 static void image_loader_jpegxl_free(gpointer loader)
233 auto ld = static_cast<ImageLoaderJPEGXL *>(loader);
234 if (ld->pixbuf) g_object_unref(ld->pixbuf);
238 void image_loader_backend_set_jpegxl(ImageLoaderBackend *funcs)
240 funcs->loader_new = image_loader_jpegxl_new;
241 funcs->set_size = image_loader_jpegxl_set_size;
242 funcs->load = image_loader_jpegxl_load;
243 funcs->write = nullptr;
244 funcs->get_pixbuf = image_loader_jpegxl_get_pixbuf;
245 funcs->close = image_loader_jpegxl_close;
246 funcs->abort = image_loader_jpegxl_abort;
247 funcs->free = image_loader_jpegxl_free;
248 funcs->get_format_name = image_loader_jpegxl_get_format_name;
249 funcs->get_format_mime_types = image_loader_jpegxl_get_format_mime_types;
253 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */