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Add a command line option to extract thumbnails

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Only use LibRaw for now, which probably has the most impact
using the least amount of effort.
This commit is contained in:
Přemysl Eric Janouch
2022-06-07 04:21:04 +02:00
parent 930744e165
commit 8dfbd0dee2
4 changed files with 160 additions and 70 deletions
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66
fiv.c
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@@ -1767,11 +1767,47 @@ static const char stylesheet[] = "@define-color fiv-tile @content_view_bg; \
} \
.fiv-information label { padding: 0 4px; }";
static void
output_thumbnail(const char *path_arg, gboolean extract, const char *size_arg)
{
if (!path_arg)
exit_fatal("no path given");
FivThumbnailSize size = 0;
if (size_arg) {
for (; size < FIV_THUMBNAIL_SIZE_COUNT; size++) {
if (!strcmp(
fiv_thumbnail_sizes[size].thumbnail_spec_name, size_arg))
break;
}
if (size >= FIV_THUMBNAIL_SIZE_COUNT)
exit_fatal("unknown thumbnail size: %s", size_arg);
}
GError *error = NULL;
GFile *file = g_file_new_for_commandline_arg(path_arg);
cairo_surface_t *surface = NULL;
if (extract && (surface = fiv_thumbnail_extract(file, &error)))
fiv_io_serialize_to_stdout(surface, FIV_IO_SERIALIZE_LOW_QUALITY);
else if (size_arg &&
(g_clear_error(&error),
(surface = fiv_thumbnail_produce(file, size, &error))))
fiv_io_serialize_to_stdout(surface, 0);
else
g_assert(error != NULL);
g_object_unref(file);
if (error)
exit_fatal("%s", error->message);
cairo_surface_destroy(surface);
}
int
main(int argc, char *argv[])
{
gboolean show_version = FALSE, show_supported_media_types = FALSE,
invalidate_cache = FALSE, browse = FALSE;
invalidate_cache = FALSE, browse = FALSE, extract_thumbnail = FALSE;
gchar **path_args = NULL, *thumbnail_size = NULL;
const GOptionEntry options[] = {
{G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &path_args,
@@ -1782,9 +1818,12 @@ main(int argc, char *argv[])
{"browse", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_NONE, &browse,
"Start in filesystem browsing mode", NULL},
{"extract-thumbnail", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_NONE, &extract_thumbnail,
"Output any embedded thumbnail (superseding --thumbnail)", NULL},
{"thumbnail", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_STRING, &thumbnail_size,
"Generate thumbnails for an image, up to the given size", "SIZE"},
"Generate thumbnails, up to SIZE, and output that size", "SIZE"},
{"invalidate-cache", 0, G_OPTION_FLAG_IN_MAIN,
G_OPTION_ARG_NONE, &invalidate_cache,
"Invalidate the wide thumbnail cache", NULL},
@@ -1820,27 +1859,8 @@ main(int argc, char *argv[])
// TODO(p): Complain to the user if there's more than one argument.
// Best show the help message, if we can figure that out.
const gchar *path_arg = path_args ? path_args[0] : NULL;
if (thumbnail_size) {
if (!path_arg)
exit_fatal("no path given");
FivThumbnailSize size = 0;
for (; size < FIV_THUMBNAIL_SIZE_COUNT; size++)
if (!strcmp(fiv_thumbnail_sizes[size].thumbnail_spec_name,
thumbnail_size))
break;
if (size >= FIV_THUMBNAIL_SIZE_COUNT)
exit_fatal("unknown thumbnail size: %s", thumbnail_size);
GFile *target = g_file_new_for_commandline_arg(path_arg);
cairo_surface_t *surface = NULL;
if (!fiv_thumbnail_produce(target, size, &surface, &error))
exit_fatal("%s", error->message);
g_object_unref(target);
if (surface) {
fiv_io_serialize_to_stdout(surface);
cairo_surface_destroy(surface);
}
if (extract_thumbnail || thumbnail_size) {
output_thumbnail(path_arg, extract_thumbnail, thumbnail_size);
return 0;
}