mirror of
https://github.com/RetroDECK/ES-DE.git
synced 2024-11-21 21:55:38 +00:00
Split the main PDF converter code into its own class
This commit is contained in:
Leon Styhre
parent
8403b40d4c
commit
ddaf2f01b7
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@ -21,13 +21,27 @@ if(WIN32)
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elseif(APPLE)
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set(POPPLER_CPP_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../external/poppler/cpp ${CMAKE_CURRENT_SOURCE_DIR}/../external/poppler/build/cpp)
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set(POPPLER_CPP_LIBRARY ${CMAKE_CURRENT_SOURCE_DIR}/../libpoppler-cpp.0.dylib)
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elseif(ANDROID)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden")
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set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -llog")
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set(POPPLER_CPP_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../external/poppler/cpp ${CMAKE_CURRENT_SOURCE_DIR}/../external/poppler/build/cpp)
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set(POPPLER_CPP_LIBRARY ${CMAKE_CURRENT_SOURCE_DIR}/../android/libs/${ANDROID_CPU_ARCH}/libpoppler-cpp.so)
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else()
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find_package(Poppler REQUIRED COMPONENTS cpp)
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endif()
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include_directories(${POPPLER_CPP_INCLUDE_DIR})
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add_executable(es-pdf-convert WIN32 ${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp)
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target_link_libraries(es-pdf-convert ${POPPLER_CPP_LIBRARY})
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if (ANDROID)
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set(CONVERTER_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/src/ConvertPDF.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/src/ConvertPDF.h)
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add_library(es-pdf-convert SHARED ${CONVERTER_SOURCE_FILES})
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else()
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set(CONVERTER_SOURCE_FILES ${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/src/ConvertPDF.cpp
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${CMAKE_CURRENT_SOURCE_DIR}/src/ConvertPDF.h)
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add_executable(es-pdf-convert WIN32 ${CONVERTER_SOURCE_FILES})
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endif()
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target_link_libraries(es-pdf-convert PRIVATE ${POPPLER_CPP_LIBRARY})
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if(WIN32)
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set_target_properties(es-pdf-convert PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/es-pdf-converter" INSTALL_RPATH_USE_LINK_PATH TRUE)
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194
es-pdf-converter/src/ConvertPDF.cpp
Normal file
194
es-pdf-converter/src/ConvertPDF.cpp
Normal file
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@ -0,0 +1,194 @@
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// SPDX-License-Identifier: GPL-2.0-only
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//
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// ES-DE
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// ConvertPDF.cpp
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//
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// Converts PDF document pages to raw ARGB32 pixel data for maximum performance.
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// This needs to be separated into its own binary to get around the restrictive GPL
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// license used by the Poppler PDF rendering library.
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//
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#include "ConvertPDF.h"
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#include "poppler-document.h"
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#include "poppler-image.h"
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#include "poppler-page-renderer.h"
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#include "poppler-page.h"
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#include <cmath>
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#include <fstream>
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#include <iostream>
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#if defined(__ANDROID__)
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#include <android/log.h>
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#endif
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#if defined(_WIN64)
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#include <fcntl.h>
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#include <io.h>
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#include <windows.h>
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#endif
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#if defined(_WIN64)
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int ConvertPDF::processFile(
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const std::wstring path, const std::wstring mode, int pageNum, int width, int height)
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#elif defined(__ANDROID__)
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int ConvertPDF::processFile(const std::string path,
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const std::string mode,
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int pageNum,
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int width,
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int height,
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std::string& result)
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#else
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int ConvertPDF::processFile(
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const std::string path, const std::string mode, int pageNum, int width, int height)
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#endif
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{
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std::ifstream file;
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file.open(path.c_str(), std::ifstream::binary);
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if (file.fail()) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID,
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"Error: Couldn't open PDF file, permission problems?");
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#else
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std::cerr << "Error: Couldn't open PDF file, permission problems?" << std::endl;
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#endif
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return (-1);
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}
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file.seekg(0, std::ios::end);
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const long fileLength {static_cast<long>(file.tellg())};
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file.seekg(0, std::ios::beg);
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std::vector<char> fileData(fileLength);
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file.read(&fileData[0], fileLength);
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file.close();
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const poppler::document* document {
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poppler::document::load_from_raw_data(&fileData[0], fileLength)};
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if (document == nullptr) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID,
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"Error: Couldn't open document, invalid PDF file?");
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#else
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std::cerr << "Error: Couldn't open document, invalid PDF file?" << std::endl;
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#endif
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return (-1);
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}
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const int pageCount {document->pages()};
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#if defined(_WIN64)
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if (mode == L"-fileinfo") {
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#else
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if (mode == "-fileinfo") {
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#endif
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std::vector<std::string> pageInfo;
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for (int i {0}; i < pageCount; ++i) {
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std::string pageRow;
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const poppler::page* page {document->create_page(i)};
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if (page == nullptr) {
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if (page == nullptr) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID,
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"Error: Couldn't read page %i", i + 1);
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#else
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std::cerr << "Error: Couldn't read page " << i + 1 << std::endl;
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#endif
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return (-1);
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}
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}
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std::string orientation;
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if (page->orientation() == poppler::page::portrait)
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orientation = "portrait";
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else if (page->orientation() == poppler::page::upside_down)
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orientation = "upside_down";
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else if (page->orientation() == poppler::page::seascape)
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orientation = "seascape";
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else
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orientation = "landscape";
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const poppler::rectf pageRect {page->page_rect()};
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pageRow.append(std::to_string(i + 1))
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.append(";")
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.append(orientation)
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.append(";")
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.append(std::to_string(pageRect.width()))
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.append(";")
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.append(std::to_string(pageRect.height()));
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pageInfo.emplace_back(pageRow);
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}
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for (auto& row : pageInfo) {
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#if defined(__ANDROID__)
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result.append(row).append("\n");
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#else
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std::cout << row << std::endl;
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#endif
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}
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return (0);
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}
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if (pageNum < 1 || pageNum > pageCount) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID,
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"Error: Requested page %i does not exist in document", pageNum);
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#else
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std::cerr << "Error: Requested page " << pageNum << " does not exist in document"
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<< std::endl;
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#endif
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return (-1);
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}
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, "org.es_de.frontend", "PDF CONVERTING BREAK 10");
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#endif
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const poppler::page* page {document->create_page(pageNum - 1)};
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if (page == nullptr) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID,
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"Error: Couldn't read page %i", pageNum);
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#else
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std::cerr << "Error: Couldn't read page " << pageNum << std::endl;
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#endif
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return (-1);
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}
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poppler::page_renderer pageRenderer;
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pageRenderer.set_render_hint(poppler::page_renderer::text_antialiasing);
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pageRenderer.set_render_hint(poppler::page_renderer::antialiasing);
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// pageRenderer.set_render_hint(poppler::page_renderer::text_hinting);
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const poppler::rectf pageRect {page->page_rect()};
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const bool rotate {page->orientation() == poppler::page::portrait ||
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page->orientation() == poppler::page::upside_down};
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const double pageHeight {pageRect.height()};
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const double sizeFactor {static_cast<double>(rotate ? height : width) / pageHeight};
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poppler::image image {
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pageRenderer.render_page(page, 72.0 * sizeFactor, 72.0 * sizeFactor, 0, 0, width, height)};
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if (!image.is_valid()) {
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#if defined(__ANDROID__)
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__android_log_print(ANDROID_LOG_ERROR, ANDROID_APPLICATION_ID, "Rendered image is invalid");
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#else
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std::cerr << "Rendered image is invalid" << std::endl;
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#endif
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return (-1);
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}
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#if defined(__ANDROID__)
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result.insert(0, std::move(image.data()), width * height * 4);
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#else
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// Necessary as the image data stream may contain null characters.
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std::string imageARGB32;
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imageARGB32.insert(0, std::move(image.data()), width * height * 4);
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std::cout << imageARGB32;
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#endif
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return 0;
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}
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35
es-pdf-converter/src/ConvertPDF.h
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35
es-pdf-converter/src/ConvertPDF.h
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@ -0,0 +1,35 @@
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// SPDX-License-Identifier: GPL-2.0-only
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//
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// ES-DE
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// ConvertPDF.h
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//
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// Converts PDF document pages to raw ARGB32 pixel data for maximum performance.
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// This needs to be separated into its own binary to get around the restrictive GPL
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// license used by the Poppler PDF rendering library.
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//
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#include <string>
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#ifndef ES_PDF_CONVERTER_CONVERT_PDF_H
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#define ES_PDF_CONVERTER_CONVERT_PDF_H
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class ConvertPDF
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{
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public:
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#if defined(_WIN64)
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static int processFile(
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const std::wstring path, const std::wstring mode, int pageNum, int width, int height);
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#elif defined(__ANDROID__)
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__attribute__((visibility("default"))) static int processFile(const std::string path,
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const std::string mode,
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int pageNum,
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int width,
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int height,
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std::string& result);
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#else
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static int processFile(
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const std::string path, const std::string mode, int pageNum, int width, int height);
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#endif
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};
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#endif // ES_PDF_CONVERTER_CONVERT_PDF_H
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@ -1,6 +1,6 @@
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// SPDX-License-Identifier: GPL-2.0-only
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//
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// EmulationStation Desktop Edition (ES-DE) PDF converter
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// ES-DE PDF converter
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// main.cpp
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//
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// Converts PDF document pages to raw ARGB32 pixel data for maximum performance.
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@ -11,13 +11,8 @@
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// All ES-DE C++ source code is formatted using clang-format.
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//
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#include "poppler-document.h"
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#include "poppler-image.h"
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#include "poppler-page-renderer.h"
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#include "poppler-page.h"
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#include "ConvertPDF.h"
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#include <cmath>
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#include <fstream>
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#include <iostream>
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#if defined(_WIN64)
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@ -101,7 +96,7 @@ int main(int argc, char* argv[])
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pageNum = atoi(argv[3]);
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width = atoi(argv[4]);
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height = atoi(argv[5]);
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#endif
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#endif // _WIN64
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if (width < 1 || width > 7680) {
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std::cerr << "Invalid horizontal resolution defined: " << argv[3] << std::endl;
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exit(-1);
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@ -116,107 +111,5 @@ int main(int argc, char* argv[])
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// << width << "x" << height << " pixels" << std::endl;
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}
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std::ifstream file;
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file.open(path.c_str(), std::ifstream::binary);
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if (file.fail()) {
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std::cerr << "Error: Couldn't open PDF file, permission problems?" << std::endl;
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exit(-1);
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}
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file.seekg(0, std::ios::end);
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const long fileLength {static_cast<long>(file.tellg())};
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file.seekg(0, std::ios::beg);
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std::vector<char> fileData(fileLength);
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file.read(&fileData[0], fileLength);
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file.close();
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const poppler::document* document {
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poppler::document::load_from_raw_data(&fileData[0], fileLength)};
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if (document == nullptr) {
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std::cerr << "Error: Couldn't open document, invalid PDF file?" << std::endl;
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exit(-1);
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}
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const int pageCount {document->pages()};
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#if defined(_WIN64)
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if (mode == L"-fileinfo") {
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#else
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if (mode == "-fileinfo") {
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#endif
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std::vector<std::string> pageInfo;
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for (int i {0}; i < pageCount; ++i) {
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std::string pageRow;
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const poppler::page* page {document->create_page(i)};
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if (page == nullptr) {
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if (page == nullptr) {
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std::cerr << "Error: Couldn't read page " << i + 1 << std::endl;
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exit(-1);
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}
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}
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std::string orientation;
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if (page->orientation() == poppler::page::portrait)
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orientation = "portrait";
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else if (page->orientation() == poppler::page::upside_down)
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orientation = "upside_down";
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else if (page->orientation() == poppler::page::seascape)
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orientation = "seascape";
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else
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orientation = "landscape";
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const poppler::rectf pageRect {page->page_rect()};
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pageRow.append(std::to_string(i + 1))
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.append(";")
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.append(orientation)
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.append(";")
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.append(std::to_string(pageRect.width()))
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.append(";")
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.append(std::to_string(pageRect.height()));
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pageInfo.emplace_back(pageRow);
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}
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for (auto& row : pageInfo)
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std::cout << row << std::endl;
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exit(0);
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}
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if (pageNum < 1 || pageNum > pageCount) {
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std::cerr << "Error: Requested page " << pageNum << " does not exist in document"
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<< std::endl;
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exit(-1);
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}
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const poppler::page* page {document->create_page(pageNum - 1)};
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if (page == nullptr) {
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std::cerr << "Error: Couldn't read page " << pageNum << std::endl;
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exit(-1);
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}
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poppler::page_renderer pageRenderer;
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pageRenderer.set_render_hint(poppler::page_renderer::text_antialiasing);
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pageRenderer.set_render_hint(poppler::page_renderer::antialiasing);
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// pageRenderer.set_render_hint(poppler::page_renderer::text_hinting);
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const poppler::rectf pageRect {page->page_rect()};
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const bool rotate {page->orientation() == poppler::page::portrait ||
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page->orientation() == poppler::page::upside_down};
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const double pageHeight {pageRect.height()};
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const double sizeFactor {static_cast<double>(rotate ? height : width) / pageHeight};
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poppler::image image {
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pageRenderer.render_page(page, 72.0 * sizeFactor, 72.0 * sizeFactor, 0, 0, width, height)};
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if (!image.is_valid()) {
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std::cerr << "Rendered image is invalid" << std::endl;
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exit(-1);
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}
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// Necessary as the image data stream may contain null characters.
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std::string imageARGB32;
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imageARGB32.insert(0, std::move(image.data()), width * height * 4);
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std::cout << imageARGB32;
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return 0;
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return ConvertPDF::processFile(path, mode, pageNum, width, height);
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}
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