[gtk/gamma-shenanigans: 2/2] Support loading and saving float textures
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/gamma-shenanigans: 2/2] Support loading and saving float textures
- Date: Wed, 8 Sep 2021 03:09:03 +0000 (UTC)
commit a7daaef904cd5c7a4c04f79e93f122f3e04b3f2a
Author: Matthias Clasen <mclasen redhat com>
Date: Tue Sep 7 14:25:52 2021 -0400
Support loading and saving float textures
Add support for the tiff file format, which allows
us to save all our memory formats without loss.
gdk/gdktexture.c | 107 ++++++++++--
gdk/gdktiff.c | 499 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
gdk/gdktiff.h | 37 +++++
gdk/meson.build | 3 +-
meson.build | 1 +
5 files changed, 635 insertions(+), 12 deletions(-)
---
diff --git a/gdk/gdktexture.c b/gdk/gdktexture.c
index 38ea922a9f..779fa5d847 100644
--- a/gdk/gdktexture.c
+++ b/gdk/gdktexture.c
@@ -47,6 +47,7 @@
#include <graphene.h>
#include <png.h>
+#include "gdktiff.h"
/* HACK: So we don't need to include any (not-yet-created) GSK or GTK headers */
void
@@ -402,6 +403,33 @@ gdk_texture_new_from_png (GFile *file,
return texture;
}
+static GdkTexture *
+gdk_texture_new_from_tiff (GFile *file,
+ GError **error)
+{
+ GBytes *bytes;
+ GdkTexture *texture;
+ guchar *data;
+ int width, height;
+ GdkMemoryFormat format;
+ gsize bpp;
+
+ data = gdk_load_tiff (file, &width, &height, &format, error);
+ if (!data)
+ return NULL;
+
+ bpp = gdk_memory_format_bytes_per_pixel (format);
+ bytes = g_bytes_new_take (data, width * height * bpp);
+
+ texture = gdk_memory_texture_new (width, height,
+ format,
+ bytes, width * bpp);
+
+ g_bytes_unref (bytes);
+
+ return texture;
+}
+
/**
* gdk_texture_new_from_file:
* @file: `GFile` to load
@@ -442,7 +470,7 @@ gdk_texture_new_from_file (GFile *file,
g_object_unref (stream);
stream = buffered;
- g_buffered_input_stream_fill (G_BUFFERED_INPUT_STREAM (stream), 8, NULL, NULL);
+ g_buffered_input_stream_fill (G_BUFFERED_INPUT_STREAM (stream), 10, NULL, NULL);
data = g_buffered_input_stream_peek_buffer (G_BUFFERED_INPUT_STREAM (stream), &size);
if (png_check_sig (data, 8))
@@ -451,6 +479,13 @@ gdk_texture_new_from_file (GFile *file,
return gdk_texture_new_from_png (file, error);
}
+ if (memcmp (data, "MM\x00\x2a", 4) == 0 ||
+ memcmp (data, "II\x2a\x00", 4) == 0)
+ {
+ g_object_unref (stream);
+ return gdk_texture_new_from_tiff (file, error);
+ }
+
pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, error);
g_object_unref (stream);
if (pixbuf == NULL)
@@ -678,6 +713,63 @@ gdk_texture_save_to_png (GdkTexture *texture,
return result;
}
+static gboolean
+gdk_texture_save_to_tiff (GdkTexture *texture,
+ const char *filename,
+ GError **error)
+{
+ GBytes *bytes = NULL;
+ gboolean result;
+ GdkMemoryFormat formats[] = {
+ GDK_MEMORY_R32G32B32_FLOAT,
+ GDK_MEMORY_R16G16B16_FLOAT,
+ GDK_MEMORY_R16G16B16A16_PREMULTIPLIED,
+ GDK_MEMORY_B8G8R8A8_PREMULTIPLIED,
+ GDK_MEMORY_A8R8G8B8_PREMULTIPLIED,
+ GDK_MEMORY_R8G8B8A8_PREMULTIPLIED,
+ GDK_MEMORY_B8G8R8A8,
+ GDK_MEMORY_A8R8G8B8,
+ GDK_MEMORY_R8G8B8A8,
+ GDK_MEMORY_A8B8G8R8,
+ GDK_MEMORY_R8G8B8,
+ GDK_MEMORY_B8G8R8,
+ };
+ GdkMemoryFormat format;
+ GFile *file;
+
+ for (int i = 0; i < G_N_ELEMENTS (formats); i++)
+ {
+ bytes = gdk_texture_download_format (texture, formats[i]);
+ if (bytes)
+ {
+ format = formats[i];
+ break;
+ }
+ }
+
+ if (!bytes)
+ {
+ g_set_error_literal (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Not a supported texture format");
+ return FALSE;
+ }
+
+ file = g_file_new_for_path (filename);
+
+ result = gdk_save_tiff (file,
+ g_bytes_get_data (bytes, NULL),
+ gdk_texture_get_width (texture),
+ gdk_texture_get_height (texture),
+ format,
+ error);
+
+ g_bytes_unref (bytes);
+ g_object_unref (file);
+
+ return result;
+}
+
/**
* gdk_texture_save_to_file:
* @texture: a `GdkTexture`
@@ -687,7 +779,8 @@ gdk_texture_save_to_png (GdkTexture *texture,
* Store the given @texture to the @filename.
*
* GTK will choose a suitable file format to save the data in
- * depending on the format of the texture.
+ * depending on the format of the texture. Currently, that is
+ * tiff, for all kinds of textures.
*
* This is a utility function intended for debugging and testing.
* If you want more control over formats, proper error handling or
@@ -706,13 +799,5 @@ gdk_texture_save_to_file (GdkTexture *texture,
g_return_val_if_fail (GDK_IS_TEXTURE (texture), FALSE);
g_return_val_if_fail (filename != NULL, FALSE);
- if (!gdk_texture_save_to_png (texture, filename))
- {
- g_set_error_literal (error,
- G_IO_ERROR, G_IO_ERROR_FAILED,
- "Failed to save to png");
- return FALSE;
- }
-
- return TRUE;
+ return gdk_texture_save_to_tiff (texture, filename, error);
}
diff --git a/gdk/gdktiff.c b/gdk/gdktiff.c
new file mode 100644
index 0000000000..e6607e871a
--- /dev/null
+++ b/gdk/gdktiff.c
@@ -0,0 +1,499 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2021 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gdktiff.h"
+
+#include "gdktexture.h"
+#include "gdkmemorytextureprivate.h"
+#include <tiffio.h>
+
+/* {{{ IO handling */
+
+typedef struct
+{
+ GFile *file;
+ GObject *stream;
+ GInputStream *input;
+ GOutputStream *output;
+
+ gchar *buffer;
+ gsize allocated;
+ gsize used;
+ gsize position;
+ char *error;
+} TiffIO;
+
+static TiffIO tiff_io = { 0, };
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wsuggest-attribute=format"
+
+static void
+tiff_io_warning (const char *module,
+ const char *fmt,
+ va_list ap)
+{
+ g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, fmt, ap);
+}
+
+static void
+tiff_io_error (const char *module,
+ const char *fmt,
+ va_list ap)
+{
+ char *msg = g_strdup_vprintf (fmt, ap);
+ g_log (G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, "%s", msg);
+ if (!tiff_io.error)
+ tiff_io.error = msg;
+ else
+ g_free (msg);
+}
+
+#pragma GCC diagnostic pop
+
+static tsize_t
+tiff_io_read (thandle_t handle,
+ tdata_t buffer,
+ tsize_t size)
+{
+ TiffIO *io = (TiffIO *) handle;
+ GError *error = NULL;
+ gssize read = -1;
+ gsize bytes_read = 0;
+
+ if (! g_input_stream_read_all (io->input,
+ (void *) buffer, (gsize) size,
+ &bytes_read,
+ NULL, &error))
+ {
+ g_printerr ("%s", error->message);
+ g_clear_error (&error);
+ }
+
+ read = bytes_read;
+
+ return (tsize_t) read;
+}
+
+static tsize_t
+tiff_io_write (thandle_t handle,
+ tdata_t buffer,
+ tsize_t size)
+{
+ TiffIO *io = (TiffIO *) handle;
+ GError *error = NULL;
+ gssize written = -1;
+ gsize bytes_written = 0;
+
+ if (! g_output_stream_write_all (io->output,
+ (void *) buffer, (gsize) size,
+ &bytes_written,
+ NULL, &error))
+ {
+ g_printerr ("%s", error->message);
+ g_clear_error (&error);
+ }
+
+ written = bytes_written;
+
+ return (tsize_t) written;
+}
+
+static GSeekType
+lseek_to_seek_type (int whence)
+{
+ switch (whence)
+ {
+ default:
+ case SEEK_SET:
+ return G_SEEK_SET;
+ case SEEK_CUR:
+ return G_SEEK_CUR;
+ case SEEK_END:
+ return G_SEEK_END;
+ }
+}
+
+static toff_t
+tiff_io_seek (thandle_t handle,
+ toff_t offset,
+ int whence)
+{
+ TiffIO *io = (TiffIO *) handle;
+ GError *error = NULL;
+ gboolean sought = FALSE;
+ goffset position = -1;
+
+ sought = g_seekable_seek (G_SEEKABLE (io->stream),
+ (goffset) offset, lseek_to_seek_type (whence),
+ NULL, &error);
+ if (sought)
+ {
+ position = g_seekable_tell (G_SEEKABLE (io->stream));
+ }
+ else
+ {
+ g_printerr ("%s", error->message);
+ g_clear_error (&error);
+ }
+
+ return (toff_t) position;
+}
+
+static int
+tiff_io_close (thandle_t handle)
+{
+ TiffIO *io = (TiffIO *) handle;
+ GError *error = NULL;
+ gboolean closed = FALSE;
+
+ if (io->input)
+ closed = g_input_stream_close (io->input, NULL, &error);
+ else if (io->output)
+ closed = g_output_stream_close (io->output, NULL, &error);
+
+ if (!closed)
+ {
+ g_printerr ("%s", error->message);
+ g_clear_error (&error);
+ }
+
+ g_object_unref (io->stream);
+ io->stream = NULL;
+ io->input = NULL;
+ io->output = NULL;
+
+ g_free (io->buffer);
+ io->buffer = NULL;
+
+ io->allocated = 0;
+ io->used = 0;
+ io->position = 0;
+
+ g_free (io->error);
+ io->error = NULL;
+
+ return closed ? 0 : -1;
+}
+
+static toff_t
+tiff_io_get_file_size (thandle_t handle)
+{
+ TiffIO *io = (TiffIO *) handle;
+ GError *error = NULL;
+ GFileInfo *info;
+ goffset size = 0;
+
+ info = g_file_query_info (io->file,
+ G_FILE_ATTRIBUTE_STANDARD_SIZE,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, &error);
+ if (!info)
+ {
+ g_printerr ("%s", error->message);
+ g_clear_error (&error);
+ }
+ else
+ {
+ size = g_file_info_get_size (info);
+ g_object_unref (info);
+ }
+
+ return (toff_t) size;
+}
+
+static TIFF *
+tiff_open (GFile *file,
+ const gchar *mode,
+ GError **error)
+{
+ TIFFSetWarningHandler ((TIFFErrorHandler) tiff_io_warning);
+ TIFFSetErrorHandler ((TIFFErrorHandler) tiff_io_error);
+
+ tiff_io.file = file;
+
+ if (strcmp (mode, "r") == 0)
+ {
+ tiff_io.input = G_INPUT_STREAM (g_file_read (file, NULL, error));
+ if (!tiff_io.input)
+ return NULL;
+
+ tiff_io.stream = G_OBJECT (tiff_io.input);
+ }
+ else if (strcmp (mode, "w") == 0)
+ {
+ tiff_io.output = G_OUTPUT_STREAM (g_file_replace (file,
+ NULL, FALSE,
+ G_FILE_CREATE_NONE,
+ NULL, error));
+ if (!tiff_io.output)
+ return NULL;
+
+ tiff_io.stream = G_OBJECT (tiff_io.output);
+ }
+ else
+ {
+ g_assert_not_reached ();
+ }
+
+ return TIFFClientOpen ("GTK", mode,
+ (thandle_t) &tiff_io,
+ tiff_io_read,
+ tiff_io_write,
+ tiff_io_seek,
+ tiff_io_close,
+ tiff_io_get_file_size,
+ NULL, NULL);
+}
+
+/* }}} */
+
+gboolean
+gdk_save_tiff (GFile *file,
+ const guchar *data,
+ int width,
+ int height,
+ GdkMemoryFormat format,
+ GError **error)
+{
+ TIFF *tif;
+ guint16 bits_per_sample;
+ guint16 samples_per_pixel;
+ guint16 sample_format;
+ int bytes_per_pixel;
+ int bytes_per_row;
+
+ tif = tiff_open (file, "w", error);
+ if (!tif)
+ {
+ g_set_error_literal (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ tiff_io.error);
+ return FALSE;
+ }
+
+ switch ((int)format)
+ {
+ case GDK_MEMORY_DEFAULT:
+ bits_per_sample = 8;
+ samples_per_pixel = 4;
+ sample_format = SAMPLEFORMAT_UINT;
+ break;
+ case GDK_MEMORY_R8G8B8:
+ bits_per_sample = 8;
+ samples_per_pixel = 3;
+ sample_format = SAMPLEFORMAT_UINT;
+ break;
+ case GDK_MEMORY_R16G16B16A16_PREMULTIPLIED:
+ bits_per_sample = 16;
+ samples_per_pixel = 4;
+ sample_format = SAMPLEFORMAT_UINT;
+ break;
+ case GDK_MEMORY_R16G16B16_FLOAT:
+ bits_per_sample = 16;
+ samples_per_pixel = 3;
+ sample_format = SAMPLEFORMAT_IEEEFP;
+ break;
+ case GDK_MEMORY_R32G32B32_FLOAT:
+ bits_per_sample = 32;
+ samples_per_pixel = 3;
+ sample_format = SAMPLEFORMAT_IEEEFP;
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ bytes_per_pixel = bits_per_sample / 8 * samples_per_pixel;
+ bytes_per_row = width * bytes_per_pixel;
+
+ TIFFSetField (tif, TIFFTAG_SOFTWARE, "GTK");
+ TIFFSetField (tif, TIFFTAG_IMAGEWIDTH, width);
+ TIFFSetField (tif, TIFFTAG_IMAGELENGTH, height);
+ TIFFSetField (tif, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
+ TIFFSetField (tif, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
+ TIFFSetField (tif, TIFFTAG_SAMPLEFORMAT, sample_format);
+ TIFFSetField (tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+ TIFFSetField (tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE);
+ // TODO: save gamma / colorspace
+
+ if (samples_per_pixel > 3)
+ {
+ guint16 extra_samples[] = { EXTRASAMPLE_ASSOCALPHA };
+ TIFFSetField (tif, TIFFTAG_EXTRASAMPLES, 1, extra_samples);
+ }
+
+ TIFFSetField (tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
+ TIFFSetField (tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+
+ for (int y = 0; y < height; y++)
+ {
+ guchar *t = (guchar *)data + bytes_per_row * y;
+
+ TIFFWriteScanline (tif, t, y, 0);
+ }
+
+ if (tiff_io.error)
+ {
+ TIFFClose (tif);
+ g_set_error_literal (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ tiff_io.error);
+ return FALSE;
+ }
+
+ TIFFFlushData (tif);
+ TIFFClose (tif);
+
+ return TRUE;
+}
+
+/* This isn't meant to be a very versatile tiff loader. It just
+ * aims to load the subset that we're saving ourselves, above.
+ */
+guchar *
+gdk_load_tiff (GFile *file,
+ int *out_width,
+ int *out_height,
+ GdkMemoryFormat *out_format,
+ GError **error)
+{
+ TIFF *tif;
+ guint16 samples_per_pixel;
+ guint16 bits_per_sample;
+ guint16 photometric;
+ guint16 planarconfig;
+ guint16 sample_format;
+ guint16 orientation;
+ guint32 width, height;
+ GdkMemoryFormat format;
+ guchar *data, *line;
+ gsize stride;
+
+ tif = tiff_open (file, "r", error);
+ if (!tif)
+ {
+ g_set_error_literal (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ tiff_io.error);
+ return NULL;
+ }
+
+ TIFFSetDirectory (tif, 0);
+
+ TIFFGetFieldDefaulted (tif, TIFFTAG_SAMPLESPERPIXEL, &samples_per_pixel);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_BITSPERSAMPLE, &bits_per_sample);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_SAMPLEFORMAT, &sample_format);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_PHOTOMETRIC, &photometric);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_PLANARCONFIG, &planarconfig);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_ORIENTATION, &orientation);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_IMAGEWIDTH, &width);
+ TIFFGetFieldDefaulted (tif, TIFFTAG_IMAGELENGTH, &height);
+
+ if (sample_format == SAMPLEFORMAT_UINT &&
+ bits_per_sample == 16 &&
+ samples_per_pixel == 4)
+ format = GDK_MEMORY_R16G16B16A16_PREMULTIPLIED;
+ else if (sample_format == SAMPLEFORMAT_UINT &&
+ bits_per_sample == 8 &&
+ samples_per_pixel == 4)
+ format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
+ else if (sample_format == SAMPLEFORMAT_UINT &&
+ bits_per_sample == 8 &&
+ samples_per_pixel == 3)
+ format = GDK_MEMORY_R8G8B8;
+ else if (sample_format == SAMPLEFORMAT_IEEEFP &&
+ bits_per_sample == 16 &&
+ samples_per_pixel == 3)
+ format = GDK_MEMORY_R16G16B16_FLOAT;
+ else if (sample_format == SAMPLEFORMAT_IEEEFP &&
+ bits_per_sample == 32 &&
+ samples_per_pixel == 3)
+ format = GDK_MEMORY_R32G32B32_FLOAT;
+ else
+ {
+ g_set_error (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Format %s/%d-bit/%s not handled",
+ samples_per_pixel == 3 ? "RGB" : "RGBA",
+ bits_per_sample,
+ sample_format == SAMPLEFORMAT_UINT ? "int" : "float");
+ TIFFClose (tif);
+ return NULL;
+ }
+
+ if (photometric != PHOTOMETRIC_RGB)
+ {
+ g_set_error (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Photometrics %d not handled", photometric);
+ TIFFClose (tif);
+ return NULL;
+ }
+
+ if (planarconfig != PLANARCONFIG_CONTIG ||
+ TIFFIsTiled (tif))
+ {
+ g_set_error_literal (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Non-contiguous or tiled tiff not handled");
+ TIFFClose (tif);
+ return NULL;
+ }
+
+ if (orientation != ORIENTATION_TOPLEFT)
+ {
+ g_set_error (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Orientation %d not handled", orientation);
+ TIFFClose (tif);
+ return NULL;
+ }
+
+ stride = width * gdk_memory_format_bytes_per_pixel (format);
+
+ g_assert (TIFFScanlineSize (tif) == stride);
+
+ data = g_new (guchar, height * stride);
+
+ line = data;
+ for (int y = 0; y < height; y++)
+ {
+ if (TIFFReadScanline (tif, line, y, 0) == -1)
+ {
+ g_set_error (error,
+ G_IO_ERROR, G_IO_ERROR_FAILED,
+ "Reading data failed at row %d", y);
+ TIFFClose (tif);
+ g_free (data);
+ return NULL;
+ }
+
+ line += stride;
+ }
+
+ *out_width = width;
+ *out_height = height;
+ *out_format = format;
+
+ g_print ("format is %d\n", format);
+
+ return data;
+}
+
+/* vim:set foldmethod=marker expandtab: */
diff --git a/gdk/gdktiff.h b/gdk/gdktiff.h
new file mode 100644
index 0000000000..9736efcd13
--- /dev/null
+++ b/gdk/gdktiff.h
@@ -0,0 +1,37 @@
+/* GDK - The GIMP Drawing Kit
+ * Copyright (C) 2021 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GDK_TIFF_H__
+#define __GDK_TIFF_H__
+
+#include "gdkmemorytexture.h"
+#include <gio/gio.h>
+
+guchar *gdk_load_tiff (GFile *file,
+ int *out_width,
+ int *out_height,
+ GdkMemoryFormat *out_format,
+ GError **error);
+
+gboolean gdk_save_tiff (GFile *file,
+ const guchar *data,
+ int width,
+ int height,
+ GdkMemoryFormat format,
+ GError **error);
+
+#endif
diff --git a/gdk/meson.build b/gdk/meson.build
index 6539c225f4..babc226265 100644
--- a/gdk/meson.build
+++ b/gdk/meson.build
@@ -50,6 +50,7 @@ gdk_public_sources = files([
'gdktoplevelsize.c',
'gdktoplevel.c',
'gdkdragsurface.c',
+ 'gdktiff.c',
])
gdk_public_headers = files([
@@ -254,7 +255,7 @@ endif
libgdk = static_library('gdk',
sources: [gdk_sources, gdk_backends_gen_headers, gdkconfig],
- dependencies: gdk_deps + [libgtk_css_dep, png_dep],
+ dependencies: gdk_deps + [libgtk_css_dep, png_dep, tiff_dep],
link_with: [libgtk_css],
include_directories: [confinc, gdkx11_inc, wlinc],
c_args: libgdk_c_args + common_cflags,
diff --git a/meson.build b/meson.build
index fc50b6e3eb..0a7132011c 100644
--- a/meson.build
+++ b/meson.build
@@ -395,6 +395,7 @@ pixbuf_dep = dependency('gdk-pixbuf-2.0', version: gdk_pixbuf_req,
fallback : ['gdk-pixbuf', 'gdkpixbuf_dep'],
default_options: ['png=enabled', 'jpeg=enabled', 'builtin_loaders=png,jpeg',
'man=false'])
png_dep = dependency('libpng16')
+tiff_dep = dependency('libtiff-4')
epoxy_dep = dependency('epoxy', version: epoxy_req,
fallback: ['libepoxy', 'libepoxy_dep'])
harfbuzz_dep = dependency('harfbuzz', version: '>= 2.1.0', required: false,
[
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