Import Ghostscript 9.50ghostscript-9.50

Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

1 files changed, 88 insertions, 0 deletions

diff --git a/base/gxgetbit.h b/base/gxgetbit.h
new file mode 100644
index 00000000..b8228ee1
--- /dev/null
+++ b/base/gxgetbit.h
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+/* Copyright (C) 2001-2019 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
+   CA 94945, U.S.A., +1(415)492-9861, for further information.
+*/
+
+
+/* Interface for get_bits_rectangle driver procedure */
+
+#ifndef gxgetbit_INCLUDED
+#  define gxgetbit_INCLUDED
+
+#include "gxbitfmt.h"
+#include "gxdevcli.h"
+
+/*
+ * We define the options for get_bits_rectangle here in a separate file
+ * so that the great majority of driver implementors and clients, which
+ * don't care about the details, don't need to be recompiled if the set
+ * of options changes.
+ */
+typedef gx_bitmap_format_t gs_get_bits_options_t;
+
+/*
+ * Define the parameter record passed to get_bits_rectangle.
+ * get_bits_rectangle may update members of this structure if
+ * the options allow it to choose their values, and always updates options
+ * to indicate what options were actually used (1 option per group).
+ */
+struct gs_get_bits_params_s {
+    gs_get_bits_options_t options;
+    byte *data[GS_CLIENT_COLOR_MAX_COMPONENTS];
+    int x_offset;		/* in returned data */
+    int original_y;
+    uint raster;
+};
+
+/*
+ * gx_bitmap_format_t defines the options passed to get_bits_rectangle,
+ * which indicate which formats are acceptable for the returned data.  If
+ * successful, get_bits_rectangle sets the options member of the parameter
+ * record to indicate what options were chosen -- 1 per group, and never the
+ * _ANY option.  Note that the chosen option is not necessarily one that
+ * appeared in the original options: for example, if GB_RASTER_ANY is the
+ * only raster option originally set, the chosen option will be
+ * GB_RASTER_STANDARD or GB_RASTER_SPECIFIED.
+ *
+ * If the options mask is 0, get_bits_rectangle must set it to the
+ * complete set of supported options and return an error.  This allows
+ * clients to determine what options are supported without actually doing
+ * a transfer.
+ *
+ * All devices must support at least one option in each group, and must
+ * support GB_COLORS_NATIVE.
+ *
+ * NOTE: the current default implementation supports only the following
+ * options in their respective groups (i.e., any other options must be
+ * supported directly by the device):
+ *      GB_DEPTH_8
+ *      GB_PACKING_CHUNKY
+ *      GB_RETURN_COPY
+ * The current default implementation also requires that all devices
+ * support GB_PACKING_CHUNKY.  */
+
+/* ---------------- Procedures ---------------- */
+
+/* Try to implement get_bits_rectangle by returning a pointer. */
+int gx_get_bits_return_pointer(gx_device * dev, int x, int h,
+                               gs_get_bits_params_t * params,
+                               const gs_get_bits_params_t *stored,
+                               byte ** stored_base);
+
+/* Implement get_bits_rectangle by copying. */
+int gx_get_bits_copy(gx_device * dev, int x, int w, int h,
+                     gs_get_bits_params_t * params,
+                     const gs_get_bits_params_t *stored,
+                     const byte * src_base, uint dev_raster);
+
+#endif /* gxgetbit_INCLUDED */