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546 lines
18 KiB
546 lines
18 KiB
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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#if JUCE_MSVC
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#pragma warning (push)
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#pragma warning (disable: 4390 4611 4365 4267)
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#ifdef __INTEL_COMPILER
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#pragma warning (disable: 2544 2545)
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#endif
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#endif
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namespace zlibNamespace
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{
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#if JUCE_INCLUDE_ZLIB_CODE
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#undef OS_CODE
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#undef fdopen
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#include "../../juce_core/zip/zlib/zlib.h"
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#undef OS_CODE
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#else
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#include JUCE_ZLIB_INCLUDE_PATH
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#endif
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}
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namespace pnglibNamespace
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{
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using namespace zlibNamespace;
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#if JUCE_INCLUDE_PNGLIB_CODE || ! defined (JUCE_INCLUDE_PNGLIB_CODE)
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#if _MSC_VER != 1310
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using std::calloc; // (causes conflict in VS.NET 2003)
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using std::malloc;
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using std::free;
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#endif
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#if JUCE_CLANG
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wsign-conversion"
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#endif
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using std::abs;
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#define NO_DUMMY_DECL
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#define PNGLCONF_H 1
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#if JUCE_ANDROID
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#define PNG_ARM_NEON_SUPPORTED
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#endif
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#define PNG_16BIT_SUPPORTED
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#define PNG_ALIGNED_MEMORY_SUPPORTED
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#define PNG_BENIGN_ERRORS_SUPPORTED
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#define PNG_BENIGN_READ_ERRORS_SUPPORTED
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#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
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#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
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#define PNG_COLORSPACE_SUPPORTED
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#define PNG_CONSOLE_IO_SUPPORTED
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#define PNG_EASY_ACCESS_SUPPORTED
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#define PNG_FIXED_POINT_SUPPORTED
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#define PNG_FLOATING_ARITHMETIC_SUPPORTED
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#define PNG_FLOATING_POINT_SUPPORTED
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#define PNG_FORMAT_AFIRST_SUPPORTED
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#define PNG_FORMAT_BGR_SUPPORTED
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#define PNG_GAMMA_SUPPORTED
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#define PNG_GET_PALETTE_MAX_SUPPORTED
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#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
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#define PNG_INCH_CONVERSIONS_SUPPORTED
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#define PNG_INFO_IMAGE_SUPPORTED
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#define PNG_IO_STATE_SUPPORTED
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#define PNG_MNG_FEATURES_SUPPORTED
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#define PNG_POINTER_INDEXING_SUPPORTED
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#define PNG_PROGRESSIVE_READ_SUPPORTED
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#define PNG_READ_16BIT_SUPPORTED
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#define PNG_READ_ALPHA_MODE_SUPPORTED
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#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
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#define PNG_READ_BACKGROUND_SUPPORTED
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#define PNG_READ_BGR_SUPPORTED
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#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
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#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
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#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
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#define PNG_READ_EXPAND_16_SUPPORTED
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#define PNG_READ_EXPAND_SUPPORTED
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#define PNG_READ_FILLER_SUPPORTED
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#define PNG_READ_GAMMA_SUPPORTED
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#define PNG_READ_GET_PALETTE_MAX_SUPPORTED
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#define PNG_READ_GRAY_TO_RGB_SUPPORTED
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#define PNG_READ_INTERLACING_SUPPORTED
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#define PNG_READ_INT_FUNCTIONS_SUPPORTED
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#define PNG_READ_INVERT_ALPHA_SUPPORTED
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#define PNG_READ_INVERT_SUPPORTED
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#define PNG_READ_OPT_PLTE_SUPPORTED
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#define PNG_READ_PACKSWAP_SUPPORTED
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#define PNG_READ_PACK_SUPPORTED
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#define PNG_READ_QUANTIZE_SUPPORTED
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#define PNG_READ_RGB_TO_GRAY_SUPPORTED
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#define PNG_READ_SCALE_16_TO_8_SUPPORTED
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#define PNG_READ_SHIFT_SUPPORTED
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#define PNG_READ_STRIP_16_TO_8_SUPPORTED
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#define PNG_READ_STRIP_ALPHA_SUPPORTED
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#define PNG_READ_SUPPORTED
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#define PNG_READ_SWAP_ALPHA_SUPPORTED
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#define PNG_READ_SWAP_SUPPORTED
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#define PNG_READ_TEXT_SUPPORTED
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#define PNG_READ_TRANSFORMS_SUPPORTED
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#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_READ_USER_CHUNKS_SUPPORTED
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#define PNG_READ_USER_TRANSFORM_SUPPORTED
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#define PNG_READ_bKGD_SUPPORTED
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#define PNG_READ_cHRM_SUPPORTED
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#define PNG_READ_gAMA_SUPPORTED
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#define PNG_READ_hIST_SUPPORTED
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#define PNG_READ_iCCP_SUPPORTED
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#define PNG_READ_iTXt_SUPPORTED
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#define PNG_READ_oFFs_SUPPORTED
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#define PNG_READ_pCAL_SUPPORTED
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#define PNG_READ_pHYs_SUPPORTED
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#define PNG_READ_sBIT_SUPPORTED
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#define PNG_READ_sCAL_SUPPORTED
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#define PNG_READ_sPLT_SUPPORTED
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#define PNG_READ_sRGB_SUPPORTED
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#define PNG_READ_tEXt_SUPPORTED
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#define PNG_READ_tIME_SUPPORTED
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#define PNG_READ_tRNS_SUPPORTED
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#define PNG_READ_zTXt_SUPPORTED
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#define PNG_SAVE_INT_32_SUPPORTED
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#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_SEQUENTIAL_READ_SUPPORTED
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#define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
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#define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
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#define PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_SET_USER_LIMITS_SUPPORTED
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#define PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED
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#define PNG_SIMPLIFIED_READ_BGR_SUPPORTED
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#define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
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#define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
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#define PNG_STDIO_SUPPORTED
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#define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_TEXT_SUPPORTED
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#define PNG_TIME_RFC1123_SUPPORTED
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#define PNG_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_USER_CHUNKS_SUPPORTED
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#define PNG_USER_LIMITS_SUPPORTED
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#define PNG_USER_TRANSFORM_INFO_SUPPORTED
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#define PNG_USER_TRANSFORM_PTR_SUPPORTED
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#define PNG_WARNINGS_SUPPORTED
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#define PNG_WRITE_16BIT_SUPPORTED
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#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
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#define PNG_WRITE_BGR_SUPPORTED
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#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
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#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
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#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
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#define PNG_WRITE_FILLER_SUPPORTED
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#define PNG_WRITE_FILTER_SUPPORTED
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#define PNG_WRITE_FLUSH_SUPPORTED
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#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
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#define PNG_WRITE_INTERLACING_SUPPORTED
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#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
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#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
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#define PNG_WRITE_INVERT_SUPPORTED
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#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
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#define PNG_WRITE_PACKSWAP_SUPPORTED
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#define PNG_WRITE_PACK_SUPPORTED
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#define PNG_WRITE_SHIFT_SUPPORTED
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#define PNG_WRITE_SUPPORTED
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#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
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#define PNG_WRITE_SWAP_SUPPORTED
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#define PNG_WRITE_TEXT_SUPPORTED
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#define PNG_WRITE_TRANSFORMS_SUPPORTED
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#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
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#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
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#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
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#define PNG_WRITE_bKGD_SUPPORTED
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#define PNG_WRITE_cHRM_SUPPORTED
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#define PNG_WRITE_gAMA_SUPPORTED
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#define PNG_WRITE_hIST_SUPPORTED
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#define PNG_WRITE_iCCP_SUPPORTED
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#define PNG_WRITE_iTXt_SUPPORTED
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#define PNG_WRITE_oFFs_SUPPORTED
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#define PNG_WRITE_pCAL_SUPPORTED
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#define PNG_WRITE_pHYs_SUPPORTED
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#define PNG_WRITE_sBIT_SUPPORTED
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#define PNG_WRITE_sCAL_SUPPORTED
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#define PNG_WRITE_sPLT_SUPPORTED
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#define PNG_WRITE_sRGB_SUPPORTED
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#define PNG_WRITE_tEXt_SUPPORTED
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#define PNG_WRITE_tIME_SUPPORTED
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#define PNG_WRITE_tRNS_SUPPORTED
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#define PNG_WRITE_zTXt_SUPPORTED
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#define PNG_bKGD_SUPPORTED
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#define PNG_cHRM_SUPPORTED
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#define PNG_gAMA_SUPPORTED
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#define PNG_hIST_SUPPORTED
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#define PNG_iCCP_SUPPORTED
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#define PNG_iTXt_SUPPORTED
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#define PNG_oFFs_SUPPORTED
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#define PNG_pCAL_SUPPORTED
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#define PNG_pHYs_SUPPORTED
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#define PNG_sBIT_SUPPORTED
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#define PNG_sCAL_SUPPORTED
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#define PNG_sPLT_SUPPORTED
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#define PNG_sRGB_SUPPORTED
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#define PNG_tEXt_SUPPORTED
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#define PNG_tIME_SUPPORTED
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#define PNG_tRNS_SUPPORTED
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#define PNG_zTXt_SUPPORTED
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#define PNG_STRING_COPYRIGHT "";
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#define PNG_STRING_NEWLINE "\n"
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#define PNG_LITERAL_SHARP 0x23
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#define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
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#define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
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#define PNG_API_RULE 0
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#define PNG_CALLOC_SUPPORTED
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#define PNG_COST_SHIFT 3
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#define PNG_DEFAULT_READ_MACROS 1
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#define PNG_GAMMA_THRESHOLD_FIXED 5000
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#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE
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#define PNG_INFLATE_BUF_SIZE 1024
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#define PNG_MAX_GAMMA_8 11
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#define PNG_QUANTIZE_BLUE_BITS 5
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#define PNG_QUANTIZE_GREEN_BITS 5
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#define PNG_QUANTIZE_RED_BITS 5
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#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1)
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#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
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#define PNG_WEIGHT_SHIFT 8
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#define PNG_ZBUF_SIZE 8192
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#define PNG_Z_DEFAULT_COMPRESSION (-1)
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#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
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#define PNG_Z_DEFAULT_STRATEGY 1
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#define PNG_sCAL_PRECISION 5
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#define PNG_sRGB_PROFILE_CHECKS 2
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#define png_debug(a, b)
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#define png_debug1(a, b, c)
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#define png_debug2(a, b, c, d)
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#include "pnglib/png.h"
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#include "pnglib/pngconf.h"
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#define PNG_NO_EXTERN
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#include "pnglib/png.c"
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#include "pnglib/pngerror.c"
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#include "pnglib/pngget.c"
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#include "pnglib/pngmem.c"
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#include "pnglib/pngread.c"
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#include "pnglib/pngpread.c"
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#include "pnglib/pngrio.c"
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#include "pnglib/pngrtran.c"
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#include "pnglib/pngrutil.c"
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#include "pnglib/pngset.c"
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#include "pnglib/pngtrans.c"
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#include "pnglib/pngwio.c"
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#include "pnglib/pngwrite.c"
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#include "pnglib/pngwtran.c"
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#include "pnglib/pngwutil.c"
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#if JUCE_CLANG
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#pragma clang diagnostic pop
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#endif
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#else
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extern "C"
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{
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#include <png.h>
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#include <pngconf.h>
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}
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#endif
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}
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#undef max
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#undef min
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#undef fdopen
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#if JUCE_MSVC
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#pragma warning (pop)
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#endif
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//==============================================================================
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namespace PNGHelpers
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{
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using namespace pnglibNamespace;
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static void JUCE_CDECL writeDataCallback (png_structp png, png_bytep data, png_size_t length)
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{
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static_cast<OutputStream*> (png_get_io_ptr (png))->write (data, length);
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}
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#if ! JUCE_USING_COREIMAGE_LOADER
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static void JUCE_CDECL readCallback (png_structp png, png_bytep data, png_size_t length)
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{
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static_cast<InputStream*> (png_get_io_ptr (png))->read (data, (int) length);
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}
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struct PNGErrorStruct {};
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static void JUCE_CDECL errorCallback (png_structp, png_const_charp)
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{
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throw PNGErrorStruct();
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}
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static void JUCE_CDECL warningCallback (png_structp, png_const_charp) {}
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#endif
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}
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//==============================================================================
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PNGImageFormat::PNGImageFormat() {}
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PNGImageFormat::~PNGImageFormat() {}
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String PNGImageFormat::getFormatName() { return "PNG"; }
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bool PNGImageFormat::usesFileExtension (const File& f) { return f.hasFileExtension ("png"); }
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bool PNGImageFormat::canUnderstand (InputStream& in)
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{
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const int bytesNeeded = 4;
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char header [bytesNeeded];
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return in.read (header, bytesNeeded) == bytesNeeded
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&& header[1] == 'P'
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&& header[2] == 'N'
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&& header[3] == 'G';
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}
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#if JUCE_USING_COREIMAGE_LOADER
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Image juce_loadWithCoreImage (InputStream& input);
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#endif
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Image PNGImageFormat::decodeImage (InputStream& in)
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{
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#if JUCE_USING_COREIMAGE_LOADER
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return juce_loadWithCoreImage (in);
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#else
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using namespace pnglibNamespace;
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Image image;
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if (png_structp pngReadStruct = png_create_read_struct (PNG_LIBPNG_VER_STRING, 0, 0, 0))
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{
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try
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{
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png_infop pngInfoStruct = png_create_info_struct (pngReadStruct);
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if (pngInfoStruct == nullptr)
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{
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png_destroy_read_struct (&pngReadStruct, 0, 0);
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return Image::null;
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}
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png_set_error_fn (pngReadStruct, 0, PNGHelpers::errorCallback, PNGHelpers::warningCallback);
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// read the header..
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png_set_read_fn (pngReadStruct, &in, PNGHelpers::readCallback);
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png_uint_32 width = 0, height = 0;
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int bitDepth = 0, colorType = 0, interlaceType;
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png_read_info (pngReadStruct, pngInfoStruct);
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png_get_IHDR (pngReadStruct, pngInfoStruct,
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&width, &height,
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&bitDepth, &colorType,
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&interlaceType, 0, 0);
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if (bitDepth == 16)
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png_set_strip_16 (pngReadStruct);
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if (colorType == PNG_COLOR_TYPE_PALETTE)
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png_set_expand (pngReadStruct);
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if (bitDepth < 8)
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png_set_expand (pngReadStruct);
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if (png_get_valid (pngReadStruct, pngInfoStruct, PNG_INFO_tRNS))
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png_set_expand (pngReadStruct);
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if (colorType == PNG_COLOR_TYPE_GRAY || colorType == PNG_COLOR_TYPE_GRAY_ALPHA)
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png_set_gray_to_rgb (pngReadStruct);
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png_set_add_alpha (pngReadStruct, 0xff, PNG_FILLER_AFTER);
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bool hasAlphaChan = (colorType & PNG_COLOR_MASK_ALPHA) != 0
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|| pngInfoStruct->num_trans > 0;
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// Load the image into a temp buffer in the pnglib format..
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const size_t lineStride = width * 4;
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HeapBlock<uint8> tempBuffer (height * lineStride);
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HeapBlock<png_bytep> rows (height);
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for (size_t y = 0; y < height; ++y)
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rows[y] = (png_bytep) (tempBuffer + lineStride * y);
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try
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{
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png_read_image (pngReadStruct, rows);
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png_read_end (pngReadStruct, pngInfoStruct);
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}
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catch (PNGHelpers::PNGErrorStruct&)
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{}
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png_destroy_read_struct (&pngReadStruct, &pngInfoStruct, 0);
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// now convert the data to a juce image format..
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image = Image (hasAlphaChan ? Image::ARGB : Image::RGB,
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(int) width, (int) height, hasAlphaChan);
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image.getProperties()->set ("originalImageHadAlpha", image.hasAlphaChannel());
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hasAlphaChan = image.hasAlphaChannel(); // (the native image creator may not give back what we expect)
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const Image::BitmapData destData (image, Image::BitmapData::writeOnly);
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for (int y = 0; y < (int) height; ++y)
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{
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const uint8* src = rows[y];
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uint8* dest = destData.getLinePointer (y);
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if (hasAlphaChan)
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{
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for (int i = (int) width; --i >= 0;)
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{
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((PixelARGB*) dest)->setARGB (src[3], src[0], src[1], src[2]);
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((PixelARGB*) dest)->premultiply();
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dest += destData.pixelStride;
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src += 4;
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}
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}
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else
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{
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for (int i = (int) width; --i >= 0;)
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{
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((PixelRGB*) dest)->setARGB (0, src[0], src[1], src[2]);
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dest += destData.pixelStride;
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src += 4;
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}
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}
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}
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}
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catch (PNGHelpers::PNGErrorStruct&)
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{}
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}
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return image;
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#endif
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}
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bool PNGImageFormat::writeImageToStream (const Image& image, OutputStream& out)
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{
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using namespace pnglibNamespace;
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const int width = image.getWidth();
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const int height = image.getHeight();
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png_structp pngWriteStruct = png_create_write_struct (PNG_LIBPNG_VER_STRING, 0, 0, 0);
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if (pngWriteStruct == nullptr)
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return false;
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png_infop pngInfoStruct = png_create_info_struct (pngWriteStruct);
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if (pngInfoStruct == nullptr)
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{
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png_destroy_write_struct (&pngWriteStruct, (png_infopp) nullptr);
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return false;
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}
|
|
|
|
png_set_write_fn (pngWriteStruct, &out, PNGHelpers::writeDataCallback, 0);
|
|
|
|
png_set_IHDR (pngWriteStruct, pngInfoStruct, (png_uint_32) width, (png_uint_32) height, 8,
|
|
image.hasAlphaChannel() ? PNG_COLOR_TYPE_RGB_ALPHA
|
|
: PNG_COLOR_TYPE_RGB,
|
|
PNG_INTERLACE_NONE,
|
|
PNG_COMPRESSION_TYPE_BASE,
|
|
PNG_FILTER_TYPE_BASE);
|
|
|
|
HeapBlock<uint8> rowData ((size_t) width * 4);
|
|
|
|
png_color_8 sig_bit;
|
|
sig_bit.red = 8;
|
|
sig_bit.green = 8;
|
|
sig_bit.blue = 8;
|
|
sig_bit.gray = 0;
|
|
sig_bit.alpha = 8;
|
|
png_set_sBIT (pngWriteStruct, pngInfoStruct, &sig_bit);
|
|
|
|
png_write_info (pngWriteStruct, pngInfoStruct);
|
|
|
|
png_set_shift (pngWriteStruct, &sig_bit);
|
|
png_set_packing (pngWriteStruct);
|
|
|
|
const Image::BitmapData srcData (image, Image::BitmapData::readOnly);
|
|
|
|
for (int y = 0; y < height; ++y)
|
|
{
|
|
uint8* dst = rowData;
|
|
const uint8* src = srcData.getLinePointer (y);
|
|
|
|
if (image.hasAlphaChannel())
|
|
{
|
|
for (int i = width; --i >= 0;)
|
|
{
|
|
PixelARGB p (*(const PixelARGB*) src);
|
|
p.unpremultiply();
|
|
|
|
*dst++ = p.getRed();
|
|
*dst++ = p.getGreen();
|
|
*dst++ = p.getBlue();
|
|
*dst++ = p.getAlpha();
|
|
src += srcData.pixelStride;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (int i = width; --i >= 0;)
|
|
{
|
|
*dst++ = ((const PixelRGB*) src)->getRed();
|
|
*dst++ = ((const PixelRGB*) src)->getGreen();
|
|
*dst++ = ((const PixelRGB*) src)->getBlue();
|
|
src += srcData.pixelStride;
|
|
}
|
|
}
|
|
|
|
png_bytep rowPtr = rowData;
|
|
png_write_rows (pngWriteStruct, &rowPtr, 1);
|
|
}
|
|
|
|
png_write_end (pngWriteStruct, pngInfoStruct);
|
|
png_destroy_write_struct (&pngWriteStruct, &pngInfoStruct);
|
|
|
|
return true;
|
|
}
|
|
|