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Experiment w/ optipng...
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@ -1023,7 +1023,7 @@ class KOBO(USBMS):
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debug_print('FAILED to upload cover', filepath)
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def _upload_cover(self, path, filename, metadata, filepath, uploadgrayscale, ditheredcovers, letterboxcovers, pngcovers):
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from calibre.utils.img import save_cover_data_to
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from calibre.utils.img import save_cover_data_to, optimize_png
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if metadata.cover:
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cover = self.normalize_path(metadata.cover.replace('/', os.sep))
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@ -1077,6 +1077,9 @@ class KOBO(USBMS):
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f.write(data)
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fsync(f)
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if pngcovers:
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optimize_png(fpath)
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else:
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debug_print("ImageID could not be retreived from the database")
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@ -2697,6 +2700,7 @@ class KOBOTOUCH(KOBO):
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def _upload_cover(self, path, filename, metadata, filepath, upload_grayscale, dithered_covers=False, keep_cover_aspect=False, letterbox_fs_covers=False, png_covers=False):
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from calibre.utils.imghdr import identify
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from calibre.utils.img import optimize_png
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debug_print("KoboTouch:_upload_cover - filename='%s' upload_grayscale='%s' dithered_covers='%s' "%(filename, upload_grayscale, dithered_covers))
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if not metadata.cover:
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@ -2780,6 +2784,9 @@ class KOBOTOUCH(KOBO):
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with lopen(fpath, 'wb') as f:
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f.write(data)
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fsync(f)
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if png_covers:
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optimize_png(fpath)
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except Exception as e:
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err = unicode_type(e)
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debug_print("KoboTouch:_upload_cover - Exception string: %s"%err)
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@ -79,6 +79,7 @@ QImage ordered_dither(const QImage &image) { // {{{
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QImage img = image;
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int y = 0, x = 0, width = img.width(), height = img.height();
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uint8_t gray = 0, dithered = 0;
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// NOTE: We went with Grayscale8 because QImageWriter was doing some weird things with an Indexed8 input...
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QImage dst(width, height, QImage::Format_Grayscale8);
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// We're running behind blend_image, so, we should only ever be fed RGB32 as input...
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@ -233,7 +233,7 @@ def save_cover_data_to(data, path=None, bgcolor='#ffffff', resize_to=None, compr
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img = grayscale_image(img)
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if eink:
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# NOTE: Keep in mind that JPG does NOT actually support indexed colors, so the JPG algorithm will then smush everything back into a 256c mess...
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# Thankfully, Nickel handles PNG just fine, and we generate smaller files to boot, because they're properly color indexed ;).
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# Thankfully, Nickel handles PNG just fine, and we potentially generate smaller files to boot, because they can be properly color indexed ;).
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img = eink_dither_image(img)
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changed = True
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if path is None:
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