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75 lines
2.3 KiB
75 lines
2.3 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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* Copyright (C) 2016 Mopria Alliance, Inc.
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* Copyright (C) 2013 Hewlett-Packard Development Company, L.P.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __WPRINT_MUPDF__
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#define __WPRINT_MUPDF__
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#include <jni.h>
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#include "wprint_image.h"
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extern const image_decode_ifc_t *wprint_mupdf_decode_ifc;
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typedef struct pdf_render_ifc pdf_render_ifc_t;
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/*
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* Defines an interface for inspecting and rendering PDFs. Note: all methods must be called
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* from the same thread that created the interface.
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*/
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struct pdf_render_ifc {
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/*
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* Return the page count for the specified file, or 0 on failure.
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*/
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int (*openDocument)(pdf_render_ifc_t *self, const char *fileName);
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/*
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* Render a page (1-based) at the specified zoom level into the supplied output buffer. The
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* buffer must be large enough to contain width * height * 3 (RGB). Returns success.
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*/
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status_t (*renderPageStripe)(pdf_render_ifc_t *self, int page, int width,
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int height, float zoom, char *buffer);
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/*
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* Determine the width and height of a particular page (1-based), returning success.
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*/
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status_t (*getPageAttributes)(pdf_render_ifc_t *self, int page,
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double *width, double *height);
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/*
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* Finally release all resources related to this interface
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*/
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void (*destroy)(pdf_render_ifc_t *self);
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};
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/*
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* One-time initialization of pdf_render module. pdf_render_deinit must be called later to
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* free resources.
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*/
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void pdf_render_init(JNIEnv *env);
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/*
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* Deinitialize the pdf_render module (at shutdown)
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*/
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void pdf_render_deinit(JNIEnv *env);
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/*
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* Allocate and return a thread-specific pdf_render interface. Caller must eventually
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* call destroy on this instance.
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*/
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pdf_render_ifc_t *create_pdf_render_ifc();
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#endif // __WPRINT_MUPDF__
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