jbig2dec: Create jbig2_page.h with page declarations.

1 files changed, 53 insertions, 0 deletions

diff --git a/jbig2dec/jbig2_page.h b/jbig2dec/jbig2_page.h
new file mode 100644
index 000000000..316824f04
--- /dev/null
+++ b/jbig2dec/jbig2_page.h
@@ -0,0 +1,53 @@
+/* Copyright (C) 2001-2018 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.
+*/
+
+/*
+    jbig2dec
+*/
+
+#ifndef _JBIG2_PAGE_H
+#define _JBIG2_PAGE_H
+
+/* the page structure handles decoded page
+   results. it's allocated by a 'page info'
+   segment and marked complete by an 'end of page'
+   segment.
+*/
+typedef enum {
+    JBIG2_PAGE_FREE,
+    JBIG2_PAGE_NEW,
+    JBIG2_PAGE_COMPLETE,
+    JBIG2_PAGE_RETURNED,
+    JBIG2_PAGE_RELEASED
+} Jbig2PageState;
+
+struct _Jbig2Page {
+    Jbig2PageState state;
+    uint32_t number;
+    uint32_t height, width;     /* in pixels */
+    uint32_t x_resolution, y_resolution;        /* in pixels per meter */
+    uint16_t stripe_size;
+    bool striped;
+    uint32_t end_row;
+    uint8_t flags;
+    Jbig2Image *image;
+};
+
+int jbig2_page_info(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
+int jbig2_end_of_stripe(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
+int jbig2_end_of_page(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
+int jbig2_page_add_result(Jbig2Ctx *ctx, Jbig2Page *page, Jbig2Image *src, int x, int y, Jbig2ComposeOp op);
+
+#endif /* _JBIG2_PAGE_H */