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Subject: [Boost-commit] svn:boost r65301 - sandbox/gil/boost/gil/extension/io2
From: dsaritz_at_[hidden]
Date: 2010-09-05 12:38:31


Author: psiha
Date: 2010-09-05 12:38:24 EDT (Sun, 05 Sep 2010)
New Revision: 65301
URL: http://svn.boost.org/trac/boost/changeset/65301

Log:
Renamed gp_private_base.hpp and libjpeg_private_base.hpp headers to gp_image.hpp and libjpeg_image.hpp respectively.
Added:
   sandbox/gil/boost/gil/extension/io2/gp_image.hpp
      - copied, changed from r65300, /sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp
   sandbox/gil/boost/gil/extension/io2/libjpeg_image.hpp
      - copied, changed from r65300, /sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp
Removed:
   sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp
   sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp
Text files modified:
   sandbox/gil/boost/gil/extension/io2/gp_image.hpp | 4 ++--
   sandbox/gil/boost/gil/extension/io2/libjpeg_image.hpp | 4 ++--
   2 files changed, 4 insertions(+), 4 deletions(-)

Copied: sandbox/gil/boost/gil/extension/io2/gp_image.hpp (from r65300, /sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp)
==============================================================================
--- /sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp (original)
+++ sandbox/gil/boost/gil/extension/io2/gp_image.hpp 2010-09-05 12:38:24 EDT (Sun, 05 Sep 2010)
@@ -1,7 +1,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 ///
-/// \file gp_private_base.hpp
-/// -------------------------
+/// \file gp_image.hpp
+/// ------------------
 ///
 /// Base IO interface GDI+ implementation.
 ///

Deleted: sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp
==============================================================================
--- sandbox/gil/boost/gil/extension/io2/gp_private_base.hpp 2010-09-05 12:38:24 EDT (Sun, 05 Sep 2010)
+++ (empty file)
@@ -1,704 +0,0 @@
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \file gp_private_base.hpp
-/// -------------------------
-///
-/// Base IO interface GDI+ implementation.
-///
-/// Copyright (c) Domagoj Saric 2010.
-///
-/// Use, modification and distribution is subject to the Boost Software License, Version 1.0.
-/// (See accompanying file LICENSE_1_0.txt or copy at
-/// http://www.boost.org/LICENSE_1_0.txt)
-///
-/// For more information, see http://www.boost.org
-///
-////////////////////////////////////////////////////////////////////////////////
-//------------------------------------------------------------------------------
-#pragma once
-#ifndef gp_private_base_hpp__3B1ED5BC_42C6_4EC6_B700_01C1B8646431
-#define gp_private_base_hpp__3B1ED5BC_42C6_4EC6_B700_01C1B8646431
-//------------------------------------------------------------------------------
-#include "../../gil_all.hpp"
-#include "detail/io_error.hpp"
-#include "detail/gp_extern_lib_guard.hpp"
-#include "detail/windows_shared.hpp"
-#include "detail/windows_shared_istreams.hpp"
-#include "formatted_image.hpp"
-
-#include <boost/array.hpp>
-#include <boost/mpl/eval_if.hpp>
-#include <boost/mpl/integral_c.hpp>
-#include <boost/range/iterator_range.hpp>
-#include <boost/static_assert.hpp>
-#include <boost/type_traits/is_pod.hpp>
-
-#include <algorithm>
-//------------------------------------------------------------------------------
-namespace boost
-{
-//------------------------------------------------------------------------------
-namespace gil
-{
-//------------------------------------------------------------------------------
-namespace detail
-{
-//------------------------------------------------------------------------------
-
-template <Gdiplus::PixelFormat gp_format> struct is_canonical : mpl::bool_ <(gp_format & PixelFormatCanonical) != 0> {};
-template <Gdiplus::PixelFormat gp_format> struct is_extended : mpl::bool_ <(gp_format & PixelFormatExtended ) != 0> {};
-template <Gdiplus::PixelFormat gp_format> struct is_indexed : mpl::bool_ <(gp_format & PixelFormatIndexed ) != 0> {};
-template <Gdiplus::PixelFormat gp_format> struct has_alpha : mpl::bool_ <(gp_format & PixelFormatAlpha ) != 0> {};
-template <Gdiplus::PixelFormat gp_format> struct has_premultiplied_alpha : mpl::bool_ <(gp_format & PixelFormatPAlpha ) != 0> {};
-template <Gdiplus::PixelFormat gp_format> struct is_supported : mpl::bool_ <(gp_format & PixelFormatGDI ) != 0 || ( ( gp_format == PixelFormat32bppCMYK ) && ( GDIPVER >= 0x0110 ) )> {};
-template <Gdiplus::PixelFormat gp_format> struct pixel_size : mpl::size_t<( gp_format >> 8 ) & 0xff > {};
-
-
-/// @see GdiplusPixelFormats.h: ARGB -> little endian BGRA
-typedef bgra_layout_t gp_alpha_layout_t;
-typedef bgr_layout_t gp_layout_t;
-
-
-typedef packed_pixel_type<uint16_t, mpl::vector3_c<unsigned,5,6,5>, gp_layout_t>::type gp_bgr565_pixel_t;
-
-
-template <typename Pixel, bool IsPlanar>
-struct gil_to_gp_format : mpl::integral_c<Gdiplus::PixelFormat, PixelFormatUndefined> {};
-
-template <> struct gil_to_gp_format<gp_bgr565_pixel_t, false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat16bppRGB565 > {};
-template <> struct gil_to_gp_format<bgr8_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat24bppRGB > {};
-template <> struct gil_to_gp_format<bgra8_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat32bppARGB > {};
-template <> struct gil_to_gp_format<gray16_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat16bppGrayScale> {};
-template <> struct gil_to_gp_format<bgr16_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat48bppRGB > {};
-template <> struct gil_to_gp_format<bgra16_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat64bppARGB > {};
-#if (GDIPVER >= 0x0110)
-template <> struct gil_to_gp_format<cmyk8_pixel_t , false> : mpl::integral_c<Gdiplus::PixelFormat, PixelFormat32bppCMYK > {};
-#endif // (GDIPVER >= 0x0110)
-
-
-typedef mpl::
-#if (GDIPVER >= 0x0110)
- vector4
-#else
- vector3
-#endif
-<
- image<bgr8_pixel_t , false>,
- image<bgra8_pixel_t , false>,
- image<gp_bgr565_pixel_t, false>
- #if (GDIPVER >= 0x0110)
- ,image<cmyk8_pixel_t , false>
- #endif
-> gp_supported_pixel_formats;
-
-
-struct view_gp_format
-{
- template <class View>
- struct apply : gil_to_gp_format<typename View::value_type, is_planar<View>::value> {};
-};
-
-
-typedef iterator_range<TCHAR const *> string_chunk_t;
-
-
-/*string_chunk_t*/char const * error_string( Gdiplus::GpStatus const status )
-{
- using namespace Gdiplus;
- switch ( status )
- {
- case GenericError : return "Generic GDI+ error";
- case OutOfMemory : return "Out of memory";
- case ObjectBusy : return "Object busy";
- case InsufficientBuffer : return "Insufficient buffer";
- case NotImplemented : return "Not implemented";
- case Win32Error : return "Win32 subsystem failure";
- case Aborted : return "Aborted";
- case FileNotFound : return "File not found";
- case ValueOverflow : return "Numeric overflow";
- case AccessDenied : return "Access denied";
- case UnknownImageFormat : return "Unknown image format";
- case FontFamilyNotFound : return "Font family not found";
- case FontStyleNotFound : return "Font style not found";
- case NotTrueTypeFont : return "A non TrueType font specified";
- case UnsupportedGdiplusVersion : return "Unsupported GDI+ version";
- case PropertyNotFound : return "Specified property does not exist in the image";
- case PropertyNotSupported : return "Specified property not supported by the format of the image";
- #if (GDIPVER >= 0x0110)
- case ProfileNotFound : return "Profile required to save an image in CMYK format not found";
- #endif //(GDIPVER >= 0x0110)
- }
-
- // Programmer errors:
- switch ( status )
- {
- case Ok : BOOST_ASSERT( !"Should not be called for no error" ); __assume( false ); break;
- case InvalidParameter : BOOST_ASSERT( !"Invalid parameter" ); __assume( false ); break;
- case WrongState : BOOST_ASSERT( !"Object in wrong state" ); __assume( false ); break;
- case GdiplusNotInitialized : BOOST_ASSERT( !"GDI+ not initialized" ); __assume( false ); break;
-
- default: BOOST_ASSERT( !"Unknown GDI+ status code." ); __assume( false ); break;
- }
-}
-
-inline void ensure_result( Gdiplus::GpStatus const result )
-{
- if ( result != Gdiplus::Ok )
- io_error( error_string( result )/*.begin()*/ );
-}
-
-inline void verify_result( Gdiplus::GpStatus const result )
-{
- BOOST_VERIFY( result == Gdiplus::Ok );
-}
-
-
-
-class gp_guard
- :
- gp_guard_base
-#if BOOST_LIB_INIT( BOOST_GIL_EXTERNAL_LIB ) == BOOST_LIB_INIT_AUTO
- ,gp_initialize_guard
-#endif
-{
-};
-
-
-class gp_roi : public Gdiplus::Rect
-{
-public:
- typedef INT value_type;
- typedef point2<value_type> point_t ;
-
- typedef point_t offset_t ;
-
-public:
- gp_roi( value_type const x, value_type const y, value_type const width, value_type const height )
- : Gdiplus::Rect( x, y, width, height ) {}
-
- gp_roi( offset_t const offset, value_type const width, value_type const height )
- : Gdiplus::Rect( Gdiplus::Point( offset.x, offset.y ), Gdiplus::Size( width, height ) ) {}
-
- gp_roi( offset_t const top_left, offset_t const bottom_right )
- : Gdiplus::Rect( Gdiplus::Point( top_left.x, top_left.y ), Gdiplus::Size( bottom_right.x - top_left.x, bottom_right.y - top_left.y ) ) {}
-};
-
-class gp_image;
-
-template <>
-struct formatted_image_traits<gp_image>
-{
- typedef Gdiplus::PixelFormat format_t;
-
- typedef gp_supported_pixel_formats supported_pixel_formats_t;
-
- typedef gp_roi roi_t;
-
- typedef view_gp_format view_to_native_format;
-
- template <class View>
- struct is_supported : detail::is_supported<view_gp_format::apply<View>::value> {};
-
- struct view_data_t : public Gdiplus::BitmapData
- {
- template <typename View>
- view_data_t( View const & view ) : p_roi_( 0 ) { set_bitmapdata_for_view( view ); }
-
- template <typename View>
- view_data_t( View const & view, gp_roi::offset_t const & offset )
- :
- p_roi_( static_cast<gp_roi const *>( optional_roi_.address() ) )
- {
- set_bitmapdata_for_view( view );
- new ( optional_roi_.address() ) gp_roi( offset, Width, Height );
- }
-
- void set_format( format_t const format ) { PixelFormat = format; }
-
- Gdiplus::Rect const * const p_roi_;
-
- private:
- template <typename View>
- void set_bitmapdata_for_view( View const & view )
- {
- Width = view.width();
- Height = view.height();
- Stride = view.pixels().row_size();
- PixelFormat = view_gp_format::apply<View>::value;
- Scan0 = formatted_image_base::get_raw_data( view );
- Reserved = 0;
- }
-
- void operator=( view_data_t const & );
-
- private:
- aligned_storage<sizeof( gp_roi ), alignment_of<gp_roi>::value>::type optional_roi_;
- };
-
- BOOST_STATIC_CONSTANT( unsigned int, desired_alignment = sizeof( Gdiplus::ARGB ) );
- BOOST_STATIC_CONSTANT( bool , builtin_conversion = true );
-};
-
-
-#if defined(BOOST_MSVC)
-# pragma warning( push )
-# pragma warning( disable : 4127 ) // "conditional expression is constant"
-#endif
-
-class gp_image
- :
- private gp_guard,
- public detail::formatted_image<gp_image>
-{
-public: /// \ingroup Construction
- explicit gp_image( wchar_t const * const filename )
- {
- ensure_result( Gdiplus::DllExports::GdipCreateBitmapFromFileICM( filename, &pBitmap_ ) );
- BOOST_ASSERT( pBitmap_ );
- }
-
- explicit gp_image( char const * const filename )
- {
- ensure_result( Gdiplus::DllExports::GdipCreateBitmapFromFileICM( wide_path( filename ), &pBitmap_ ) );
- BOOST_ASSERT( pBitmap_ );
- }
-
- // The passed IStream object must outlive the GpBitmap object (GDI+ uses
- // lazy evaluation).
- explicit gp_image( IStream & stream )
- {
- ensure_result( Gdiplus::DllExports::GdipCreateBitmapFromStreamICM( &stream, &pBitmap_ ) );
- BOOST_ASSERT( pBitmap_ );
- }
-
- // The passed View object must outlive the GpBitmap object (GDI+ uses lazy
- // evaluation).
- template <class View>
- explicit gp_image( View & view )
- {
- // http://msdn.microsoft.com/en-us/library/ms536315(VS.85).aspx
- // stride has to be a multiple of 4 bytes
- BOOST_ASSERT( !( view.pixels().row_size() % sizeof( Gdiplus::ARGB ) ) );
-
- ensure_result
- (
- Gdiplus::DllExports::GdipCreateBitmapFromScan0
- (
- view.width(),
- view.height(),
- view.pixels().row_size(),
- view_gp_format::apply<View>::value,
- get_raw_data( view ),
- &pBitmap_
- )
- );
- BOOST_ASSERT( pBitmap_ );
- }
-
- ~gp_image()
- {
- verify_result( Gdiplus::DllExports::GdipDisposeImage( pBitmap_ ) );
- }
-
-public:
- point2<std::ptrdiff_t> dimensions() const
- {
- using namespace Gdiplus;
- REAL width, height;
- verify_result( DllExports::GdipGetImageDimension( const_cast<GpBitmap *>( pBitmap_ ), &width, &height ) );
- return point2<std::ptrdiff_t>( static_cast<std::ptrdiff_t>( width ), static_cast<std::ptrdiff_t>( height ) );
- }
-
- static std::size_t format_size( format_t const format )
- {
- return Gdiplus::GetPixelFormatSize( format );
- }
-
- void save_to_png( char const * const pFilename ) const { save_to( pFilename, png_codec() ); }
- void save_to_png( wchar_t const * const pFilename ) const { save_to( pFilename, png_codec() ); }
-
- ::Gdiplus::GpBitmap & lib_object() { return *pBitmap_; }
- ::Gdiplus::GpBitmap const & lib_object() const { return const_cast<gp_image &>( *this ).lib_object(); }
-
-private: // Private formatted_image_base interface.
- friend base_t;
-
- format_t format() const
- {
- format_t pixel_format;
- verify_result( Gdiplus::DllExports::GdipGetImagePixelFormat( pBitmap_, &pixel_format ) );
- return pixel_format;
- }
-
- format_t closest_gil_supported_format() const
- {
- //http://www.tech-archive.net/Archive/Development/microsoft.public.win32.programmer.gdi/2008-01/msg00044.html
- switch ( format() )
- {
- case PixelFormat16bppGrayScale:
- case PixelFormat48bppRGB :
- case PixelFormat32bppRGB :
- case PixelFormat24bppRGB :
- return
- PixelFormat24bppRGB;
-
- case PixelFormat64bppPARGB :
- case PixelFormat32bppPARGB :
- case PixelFormat64bppARGB :
- case PixelFormat32bppARGB :
- case PixelFormat16bppARGB1555 :
- return
- PixelFormat32bppARGB;
-
- case PixelFormat16bppRGB565 :
- case PixelFormat16bppRGB555 :
- case PixelFormat8bppIndexed :
- case PixelFormat4bppIndexed :
- case PixelFormat1bppIndexed :
- return
- PixelFormat16bppRGB565;
-
- case PixelFormat32bppCMYK:
- return
- #if (GDIPVER >= 0x0110)
- PixelFormat32bppCMYK;
- #else
- PixelFormat24bppRGB;
- #endif // (GDIPVER >= 0x0110)
-
- default:
- BOOST_ASSERT( !"Should not get reached." ); __assume( false );
- return PixelFormatUndefined;
- }
- }
-
- image_type_id current_image_format_id() const
- {
- return image_format_id( closest_gil_supported_format() );
- }
-
- static image_type_id image_format_id( format_t const closest_gil_supported_format )
- {
- switch ( closest_gil_supported_format )
- {
- case PixelFormat24bppRGB : return 0;
- case PixelFormat32bppARGB : return 1;
- case PixelFormat16bppRGB565 : return 2;
- #if (GDIPVER >= 0x0110)
- case PixelFormat32bppCMYK : return 3;
- #endif
-
- default:
- BOOST_ASSERT( !"Should not get reached." ); __assume( false );
- return unsupported_format;
- }
- }
-
-private:
- template <class MyView, class TargetView, class Converter>
- void generic_convert_to_prepared_view( TargetView const & view, Converter const & converter ) const
- {
- BOOST_ASSERT( !dimensions_mismatch( view ) );
- //BOOST_ASSERT( !formats_mismatch ( view ) );
-
- using namespace Gdiplus;
- point2<std::ptrdiff_t> const & targetDimensions( original_view( view ).dimensions() );
- gp_roi const roi( get_offset<gp_roi::offset_t>( view ), targetDimensions.x, targetDimensions.y );
- BitmapData bitmapData;
- ensure_result
- (
- DllExports::GdipBitmapLockBits
- (
- pBitmap_,
- &roi,
- ImageLockModeRead,
- view_gp_format::apply<MyView>::value,
- &bitmapData
- )
- );
- BOOST_ASSERT( bitmapData.PixelFormat == view_gp_format::apply<MyView>::value );
- copy_and_convert_pixels // This must not throw!
- (
- interleaved_view
- (
- bitmapData.Width ,
- bitmapData.Height,
- gil_reinterpret_cast_c<typename MyView::value_type const *>( bitmapData.Scan0 ),
- bitmapData.Stride
- ),
- view,
- converter
- );
- verify_result( DllExports::GdipBitmapUnlockBits( pBitmap_, &bitmapData ) );
- }
-
- void raw_convert_to_prepared_view( formatted_image_traits<gp_image>::view_data_t const & view_data ) const
- {
- BOOST_ASSERT( view_data.Scan0 );
-
- using namespace Gdiplus;
-
- BitmapData * const pMutableBitmapData( const_cast<BitmapData *>( static_cast<BitmapData const *>( &view_data ) ) );
- GpStatus const load_result
- (
- DllExports::GdipBitmapLockBits
- (
- pBitmap_,
- view_data.p_roi_,
- ImageLockModeRead | ImageLockModeUserInputBuf,
- view_data.PixelFormat,
- pMutableBitmapData
- )
- );
- GpStatus const unlock_result( DllExports::GdipBitmapUnlockBits( pBitmap_, pMutableBitmapData ) );
- ensure_result( load_result );
- verify_result( unlock_result );
- }
-
-
- void copy_to_target( formatted_image_traits<gp_image>::view_data_t const & view_data ) const
- {
- BOOST_ASSERT( view_data.Width == static_cast<UINT>( dimensions().x ) );
- BOOST_ASSERT( view_data.Height == static_cast<UINT>( dimensions().y ) );
- //...this need not hold as it can be used to perform GDI+ default
- //internal colour conversion...maybe i'll provide another worker
- //function...
- //BOOST_ASSERT( view_data.PixelFormat == format () );
- raw_convert_to_prepared_view( view_data );
- }
-
-private:
- static CLSID const & png_codec()
- {
- static CLSID const clsid = { 0x557cf406, 0x1a04, 0x11d3, 0x9A, 0x73, 0x00, 0x00, 0xF8, 0x1E, 0xF3, 0x2E };
- return clsid;
- }
- static CLSID const & jpg_codec()
- {
- static CLSID const clsid = { 0x557CF401, 0x1A04, 0x11D3, 0x9A, 0x73, 0x00, 0x00, 0xF8, 0x1E, 0xF3, 0x2E };
- return clsid;
- }
- static CLSID const & tiff_codec()
- {
- static CLSID const clsid = { 0x557CF405, 0x1A04, 0x11D3, 0x9A, 0x73, 0x00, 0x00, 0xF8, 0x1E, 0xF3, 0x2E };
- return clsid;
- }
- static CLSID const & gif_codec()
- {
- static CLSID const clsid = { 0x557CF402, 0x1A04, 0x11D3, 0x9A, 0x73, 0x00, 0x00, 0xF8, 0x1E, 0xF3, 0x2E };
- return clsid;
- }
- static CLSID const & bmp_codec()
- {
- static CLSID const clsid = { 0x557CF400, 0x1A04, 0x11D3, 0x9A, 0x73, 0x00, 0x00, 0xF8, 0x1E, 0xF3, 0x2E };
- return clsid;
- }
-
-
- template <Gdiplus::PixelFormat desired_format>
- void pre_palettized_conversion( mpl::true_ /*is_indexed*/ )
- {
- #if (GDIPVER >= 0x0110)
- // A GDI+ 1.1 (a non-distributable version, distributed with MS Office
- // 2003 and MS Windows Vista and MS Windows 7) 'enhanced'/'tuned'
- // version of the conversion routine for indexed/palettized image
- // formats. Unless/until proven useful, pretty much still a GDI+ 1.1
- // tester...
-
- BOOST_ASSERT( !has_alpha<desired_format>::value && "Is this possible for indexed formats?" );
- std::size_t const number_of_pixel_bits ( pixel_size<desired_format>::value );
- std::size_t const number_of_palette_colours( static_cast<std::size_t>( ( 2 << ( number_of_pixel_bits - 1 ) ) - 1 ) );
- std::size_t const palette_size ( sizeof( ColorPalette ) + number_of_palette_colours * sizeof( ARGB ) );
- aligned_storage
- <
- palette_size,
- alignment_of<ColorPalette>::value
- >::type palette_storage;
- ColorPalette & palette( *static_cast<ColorPalette *>( palette_storage.address() ) );
- palette.Flags = ( PaletteFlagsHasAlpha * has_alpha<desired_format>::value ) |
- ( PaletteFlagsGrayScale * is_same<typename color_space_type<View>::type, gray_t>::value );
- palette.Count = number_of_palette_colours;
-
- verify_result
- (
- DllExports::GdipInitializePalette
- (
- &palette,
- PaletteTypeOptimal,
- number_of_palette_colours,
- has_alpha<desired_format>::value,
- pBitmap_
- )
- );
-
- ensure_result
- (
- DllExports::GdipBitmapConvertFormat
- (
- pBitmap_,
- desired_format,
- DitherTypeErrorDiffusion,
- PaletteTypeOptimal,
- &palette,
- 50
- )
- );
- #endif // (GDIPVER >= 0x0110)
- }
-
- template <Gdiplus::PixelFormat desired_format>
- void pre_palettized_conversion( mpl::false_ /*not is_indexed*/ ) const {}
-
- void save_to( char const * const pFilename, CLSID const & encoderID ) const { save_to( wide_path( pFilename ), encoderID ); }
- void save_to( wchar_t const * const pFilename, CLSID const & encoderID ) const
- {
- ensure_result( Gdiplus::DllExports::GdipSaveImageToFile( pBitmap_, pFilename, &encoderID, NULL ) );
- }
-
-private:
- friend class gp_view_base;
-
- Gdiplus::GpBitmap * /*const*/ pBitmap_;
-};
-
-#if defined(BOOST_MSVC)
-# pragma warning( pop )
-#endif
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \class gp_view_base
-///
-////////////////////////////////////////////////////////////////////////////////
-
-class gp_view_base : noncopyable
-{
-public:
- ~gp_view_base()
- {
- detail::verify_result( Gdiplus::DllExports::GdipBitmapUnlockBits( &bitmap_, &bitmapData_ ) );
- }
-
-protected:
- gp_view_base( gp_image & bitmap, unsigned int const lock_mode, gp_image::roi const * const p_roi = 0 )
- :
- bitmap_( *bitmap.pBitmap_ )
- {
- std::memset( &bitmapData_, 0, sizeof( bitmapData_ ) );
-
- ensure_result
- (
- Gdiplus::DllExports::GdipBitmapLockBits
- (
- &bitmap_,
- p_roi,
- lock_mode,
- bitmap.format(),
- &bitmapData_
- )
- );
- }
-
- template <typename Pixel>
- typename type_from_x_iterator<Pixel *>::view_t
- get_typed_view()
- {
- //todo assert correct type...
- interleaved_view<Pixel *>( bitmapData_.Width, bitmapData_.Height, bitmapData_.Scan0, bitmapData_.Stride );
- }
-
-private:
- Gdiplus::GpBitmap & bitmap_ ;
- Gdiplus::BitmapData bitmapData_;
-};
-
-
-
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \class gp_view
-///
-////////////////////////////////////////////////////////////////////////////////
-
-template <typename Pixel>
-class gp_view
- :
- private gp_view_base,
- public type_from_x_iterator<Pixel *>::view_t
-{
-public:
- gp_view( gp_image & image, gp_image::roi const * const p_roi = 0 )
- :
- gp_view_base( image, ImageLockModeRead | ( is_const<Pixel>::value * ImageLockModeWrite ), p_roi ),
- type_from_x_iterator<Pixel *>::view_t( get_typed_view<Pixel>() )
- {}
-};
-
-
-//...mhmh...to be seen if necessary...
-//template <typename Pixel>
-//class gp_const_view
-// :
-// private gp_view_base,
-// public type_from_x_iterator<Pixel const *>::view_t
-//{
-//public:
-// gp_const_view( gp_image & image, gp_image::roi const * const p_roi = 0 )
-// :
-// gp_view_base( image, ImageLockModeRead ),
-// type_from_x_iterator<Pixel const *>::view_t( get_typed_view<Pixel const>() )
-// {}
-//};
-
-
-//...mhmh...to be implemented...
-//template <class Impl, class SupportedPixelFormats, class ROI>
-//inline
-//typename formatted_image<Impl, SupportedPixelFormats, ROI>::view_t
-//view( formatted_image<Impl, SupportedPixelFormats, ROI> & img );// { return img._view; }
-
-
-#pragma warning( push )
-#pragma warning( disable : 4355 ) // 'this' used in base member initializer list.
-
-class __declspec( novtable ) gp_memory_image sealed
- :
- private MemoryReadStream,
- public gp_image
-{
-public:
- gp_memory_image( memory_chunk_t const & in_memory_image )
- :
- MemoryReadStream( in_memory_image ),
- gp_image ( static_cast<IStream &>( *this ) )
- {
- }
-};
-
-class __declspec( novtable ) gp_FILE_image sealed
- :
- private FileReadStream,
- public gp_image
-{
-public:
- explicit gp_FILE_image( FILE * const pFile )
- :
- FileReadStream( *pFile ),
- gp_image ( static_cast<IStream &>( *this ) )
- {
- }
-};
-
-#pragma warning( pop )
-
-
-//------------------------------------------------------------------------------
-} // namespace detail
-//------------------------------------------------------------------------------
-} // namespace gil
-//------------------------------------------------------------------------------
-} // namespace boost
-//------------------------------------------------------------------------------
-#endif // gp_private_base_hpp

Copied: sandbox/gil/boost/gil/extension/io2/libjpeg_image.hpp (from r65300, /sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp)
==============================================================================
--- /sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp (original)
+++ sandbox/gil/boost/gil/extension/io2/libjpeg_image.hpp 2010-09-05 12:38:24 EDT (Sun, 05 Sep 2010)
@@ -1,7 +1,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 ///
-/// \file libjpeg_private_base.hpp
-/// ------------------------------
+/// \file libjpeg_image.hpp
+/// -----------------------
 ///
 /// Copyright (c) Domagoj Saric 2010.
 ///

Deleted: sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp
==============================================================================
--- sandbox/gil/boost/gil/extension/io2/libjpeg_private_base.hpp 2010-09-05 12:38:24 EDT (Sun, 05 Sep 2010)
+++ (empty file)
@@ -1,754 +0,0 @@
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \file libjpeg_private_base.hpp
-/// ------------------------------
-///
-/// Copyright (c) Domagoj Saric 2010.
-///
-/// Use, modification and distribution is subject to the Boost Software License, Version 1.0.
-/// (See accompanying file LICENSE_1_0.txt or copy at
-/// http://www.boost.org/LICENSE_1_0.txt)
-///
-/// For more information, see http://www.boost.org
-///
-////////////////////////////////////////////////////////////////////////////////
-//------------------------------------------------------------------------------
-#pragma once
-#ifndef libjpeg_private_base_hpp__7C5F6951_A00F_4E0D_9783_488A49B1CA2B
-#define libjpeg_private_base_hpp__7C5F6951_A00F_4E0D_9783_488A49B1CA2B
-//------------------------------------------------------------------------------
-#include "formatted_image.hpp"
-#include "detail/io_error.hpp"
-#include "detail/libx_shared.hpp"
-
-#include <boost/smart_ptr/scoped_ptr.hpp>
-
-#define JPEG_INTERNALS
-#include "jpeglib.h"
-#undef JPEG_INTERNALS
-
-#include <csetjmp>
-#include <cstdlib>
-//------------------------------------------------------------------------------
-namespace boost
-{
-//------------------------------------------------------------------------------
-namespace gil
-{
-//------------------------------------------------------------------------------
-namespace detail
-{
-//------------------------------------------------------------------------------
-
-BOOST_STATIC_ASSERT( BITS_IN_JSAMPLE == 8 );
-
-template <typename Pixel, bool isPlanar>
-struct gil_to_libjpeg_format : mpl::integral_c<J_COLOR_SPACE, JCS_UNKNOWN> {};
-
-template <> struct gil_to_libjpeg_format<rgb8_pixel_t , false> : mpl::integral_c<J_COLOR_SPACE, JCS_RGB > {};
-template <> struct gil_to_libjpeg_format<gray8_pixel_t, false> : mpl::integral_c<J_COLOR_SPACE, JCS_GRAYSCALE> {};
-template <> struct gil_to_libjpeg_format<cmyk8_pixel_t, false> : mpl::integral_c<J_COLOR_SPACE, JCS_CMYK > {};
-
-
-
-struct view_libjpeg_format
-{
- template <class View>
- struct apply : gil_to_libjpeg_format<typename View::value_type, is_planar<View>::value> {};
-};
-
-
-typedef mpl::vector3
-<
- image<rgb8_pixel_t , false>,
- image<gray8_pixel_t, false>,
- image<cmyk8_pixel_t, false>
-> libjpeg_supported_pixel_formats;
-
-
-typedef generic_vertical_roi libjpeg_roi;
-
-
-struct libjpeg_object_wrapper_t
-{
- union aux_union
- {
- jpeg_compress_struct compressor_;
- jpeg_decompress_struct decompressor_;
- } libjpeg_object;
-};
-
-
-#if defined( BOOST_MSVC )
-# pragma warning( push )
-# pragma warning( disable : 4127 ) // "conditional expression is constant"
-#endif
-
-class libjpeg_base : private libjpeg_object_wrapper_t
-{
-protected:
- struct for_decompressor {};
- struct for_compressor {};
-
-protected:
- libjpeg_base( for_decompressor ) throw(...)
- {
- initialize_error_handler();
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
- jpeg_create_decompress( &decompressor() );
- }
-
- libjpeg_base( for_compressor ) throw(...)
- {
- initialize_error_handler();
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
- jpeg_create_compress( &compressor() );
- }
-
- ~libjpeg_base() { jpeg_destroy( &common() ); }
-
- void abort() const { jpeg_abort( &mutable_this().common() ); }
-
- jmp_buf & error_handler_target() const { return longjmp_target_; }
-
- jpeg_common_struct & common () { return *gil_reinterpret_cast<j_common_ptr>( &libjpeg_object.compressor_ ); }
- jpeg_common_struct const & common () const { return const_cast<libjpeg_base &>( *this ).common (); }
- jpeg_compress_struct & compressor () { return libjpeg_object.compressor_ ; }
- jpeg_compress_struct const & compressor () const { return const_cast<libjpeg_base &>( *this ).compressor (); }
- jpeg_decompress_struct & decompressor() { return libjpeg_object.decompressor_; }
- jpeg_decompress_struct const & decompressor() const { return const_cast<libjpeg_base &>( *this ).decompressor(); }
-
- libjpeg_base & mutable_this() const { return const_cast<libjpeg_base &>( *this ); }
-
- static libjpeg_base & base( jpeg_common_struct * const p_libjpeg_object )
- {
- BOOST_ASSERT( p_libjpeg_object );
- return *static_cast<libjpeg_base *>( gil_reinterpret_cast<libjpeg_object_wrapper_t *>( p_libjpeg_object ) );
- }
-
- __declspec( noreturn )
- static void throw_jpeg_error() throw(...)
- {
- io_error( "jpeg error" );
- }
-
- __declspec( noreturn )
- static inline void libX_fatal_error_handler( j_common_ptr const p_cinfo )
- {
- longjmp( base( p_cinfo ).error_handler_target(), 1 );
- }
-
-private:
- void initialize_error_handler()
- {
- #ifndef NDEBUG
- jpeg_std_error( &jerr_ );
- #else
- std::memset( &jerr_, 0, sizeof( jerr_ ) );
- jerr_.emit_message = &emit_message ;
- jerr_.output_message = &output_message ;
- jerr_.format_message = &format_message ;
- jerr_.reset_error_mgr = &reset_error_mgr;
- #endif // NDEBUG
- jerr_.error_exit = &error_exit;
-
- common().err = &jerr_;
- }
-
- static void __cdecl error_exit( j_common_ptr const p_cinfo )
- {
- #ifndef NDEBUG
- p_cinfo->err->output_message( p_cinfo );
- #endif
-
- libX_fatal_error_handler( p_cinfo );
- }
-
- static void __cdecl output_message( j_common_ptr /*p_cinfo*/ ) {}
- static void __cdecl emit_message ( j_common_ptr /*p_cinfo*/, int /*msg_level*/ ) {}
- static void __cdecl format_message( j_common_ptr /*p_cinfo*/, char * /*buffer*/ ) {}
-
- static void __cdecl reset_error_mgr( j_common_ptr const p_cinfo )
- {
- BOOST_ASSERT( p_cinfo->err->num_warnings == 0 );
- BOOST_ASSERT( p_cinfo->err->msg_code == 0 );
- ignore_unused_variable_warning( p_cinfo );
- }
-
-private:
- //#ifndef BOOST_MSVC
- mutable jmp_buf longjmp_target_;
- //#endif // BOOST_MSVC
-
- jpeg_error_mgr jerr_ ;
-};
-
-
-class libjpeg_image;
-
-struct decompression_setup_data_t
-{
- decompression_setup_data_t( J_COLOR_SPACE const format, JSAMPROW const buffer, libjpeg_roi::offset_t const offset )
- : format_( format ), buffer_( buffer ), offset_( offset ) {}
-
- J_COLOR_SPACE /*const*/ format_;
- JSAMPROW /*const*/ buffer_;
- libjpeg_roi::offset_t /*const*/ offset_;
-};
-
-struct view_data_t : decompression_setup_data_t
-{
- template <class View>
- /*explicit*/ view_data_t( View const & view, libjpeg_roi::offset_t const offset = 0 )
- :
- decompression_setup_data_t
- (
- view_libjpeg_format::apply<View>::value,
- formatted_image_base::get_raw_data( view ),
- offset
- ),
- height_( view.height() ),
- width_ ( view.width () ),
- stride_( view.pixels().row_size() ),
- number_of_channels_( num_channels<View>::value )
- {}
-
- void set_format( J_COLOR_SPACE const format ) { format_ = format; }
-
- unsigned int /*const*/ height_;
- unsigned int /*const*/ width_ ;
- unsigned int /*const*/ stride_;
- unsigned int number_of_channels_;
-};
-
-
-class libjpeg_writer : public libjpeg_base
-{
-public:
- explicit libjpeg_writer( char const * const p_target_file_name )
- :
- libjpeg_base( for_compressor() )
- {
- setup_destination( p_target_file_name );
- }
-
-
- ~libjpeg_writer()
- {
- jpeg_finish_compress( &compressor() );
- }
-
- jpeg_compress_struct & lib_object() { return compressor(); }
- jpeg_compress_struct const & lib_object() const { return const_cast<libjpeg_writer &>( *this ).lib_object(); }
-
- static void write( view_data_t const & view, char const * const p_target_file_name )
- {
- BOOST_ASSERT( view.format_ != JCS_UNKNOWN );
-
- libjpeg_writer writer( p_target_file_name );
-
- writer.compressor().image_width = static_cast<JDIMENSION>( view.width_ );
- writer.compressor().image_height = static_cast<JDIMENSION>( view.height_ );
- writer.compressor().input_components = view.number_of_channels_;
- writer.compressor().in_color_space = view.format_;
- jpeg_set_defaults ( &writer.compressor() );
- //jpeg_set_quality ( &writer.compressor(), 100, false );
- jpeg_start_compress( &writer.compressor(), false );
-
- JSAMPLE * p_row( view.buffer_ );
- JSAMPLE * const p_end( memunit_advanced( view.buffer_, view.height_ * view.stride_ ) );
- while ( p_row < p_end )
- {
- io_error_if( jpeg_write_scanlines( &writer.compressor(), &p_row, 1 ) != 1 );
- memunit_advance( p_row, view.stride_ );
- }
- }
-
-private:
- static libjpeg_writer & writer( j_compress_ptr const p_cinfo )
- {
- libjpeg_writer & writer( static_cast<libjpeg_writer &>( base( gil_reinterpret_cast<j_common_ptr>( p_cinfo ) ) ) );
- BOOST_ASSERT( p_cinfo->dest == &writer.destination_manager_ );
- return writer;
- }
-
- void setup_destination()
- {
- destination_manager_.next_output_byte = 0;
- destination_manager_.free_in_buffer = 0;
-
- BOOST_ASSERT( compressor().dest == NULL );
- compressor().dest = &destination_manager_;
- }
-
- void setup_destination( FILE & file )
- {
- setup_destination();
-
- compressor().client_data = &file;
-
- destination_manager_.init_destination = &init_FILE_destination;
- destination_manager_.empty_output_buffer = &empty_FILE_buffer ;
- destination_manager_.term_destination = &term_FILE_destination;
- }
-
- void setup_destination( char const * const p_file_name )
- {
- FILE * const p_file( /*std*/::fopen( p_file_name, "wb" ) );
- if ( !p_file )
- throw_jpeg_error();
- setup_destination( *p_file );
- destination_manager_.term_destination = &term_and_close_FILE_destination;
- }
-
- static void __cdecl init_FILE_destination( j_compress_ptr const p_cinfo )
- {
- libjpeg_writer & writer( writer( p_cinfo ) );
-
- writer.destination_manager_.next_output_byte = writer.write_buffer_.begin();
- writer.destination_manager_.free_in_buffer = writer.write_buffer_.size ();
- }
-
- void write_FILE_bytes( std::size_t const number_of_bytes )
- {
- if
- (
- /*std*/::fwrite
- (
- write_buffer_.begin(),
- number_of_bytes,
- 1,
- static_cast<FILE *>( compressor().client_data )
- ) != 1
- )
- libX_fatal_error_handler( &common() );
- }
-
- static boolean __cdecl empty_FILE_buffer( j_compress_ptr const p_cinfo )
- {
- libjpeg_writer & writer( writer( p_cinfo ) );
- writer.write_FILE_bytes( writer.write_buffer_.size() );
- init_FILE_destination( p_cinfo );
- return true;
- }
-
- static void __cdecl term_FILE_destination( j_compress_ptr const p_cinfo )
- {
- libjpeg_writer & writer( writer( p_cinfo ) );
-
- std::size_t const remaining_bytes( writer.write_buffer_.size() - writer.destination_manager_.free_in_buffer );
-
- writer.write_FILE_bytes( remaining_bytes );
- }
-
- static void __cdecl term_and_close_FILE_destination( j_compress_ptr const p_cinfo )
- {
- term_FILE_destination( p_cinfo );
- BOOST_VERIFY( /*std*/::fclose( static_cast<FILE *>( writer( p_cinfo ).compressor().client_data ) ) == 0 );
- }
-
-private:
- jpeg_destination_mgr destination_manager_;
- array<unsigned char, 4096> write_buffer_ ;
-};
-
-
-template <>
-struct formatted_image_traits<libjpeg_image>
-{
- typedef J_COLOR_SPACE format_t;
- typedef libjpeg_supported_pixel_formats supported_pixel_formats_t;
- typedef libjpeg_roi roi_t;
- typedef view_libjpeg_format view_to_native_format;
- typedef view_data_t view_data_t;
-
- template <class View>
- struct is_supported : mpl::bool_<view_libjpeg_format::apply<View>::value != JCS_UNKNOWN> {};
-
- BOOST_STATIC_CONSTANT( unsigned int, desired_alignment = sizeof( void * ) );
- BOOST_STATIC_CONSTANT( bool , builtin_conversion = true );
-};
-
-
-class libjpeg_image
- :
- public libjpeg_base,
- public detail::formatted_image<libjpeg_image>
-{
-public:
- struct guard {};
-
-public:
- format_t format() const { return decompressor().jpeg_color_space; }
-
- format_t closest_gil_supported_format() const
- {
- format_t const current_format( format() );
- #ifdef _DEBUG
- switch ( current_format )
- {
- case JCS_RGB :
- case JCS_YCbCr :
- case JCS_CMYK :
- case JCS_YCCK :
- case JCS_GRAYSCALE:
- case JCS_UNKNOWN :
- break;
-
- default:
- BOOST_ASSERT( !"Unknown format code." );
- }
- #endif
-
- switch ( current_format )
- {
- case JCS_YCbCr: return JCS_RGB ;
- case JCS_YCCK : return JCS_CMYK ;
- default : return current_format;
- }
- }
-
- image_type_id current_image_format_id() const
- {
- return image_format_id( closest_gil_supported_format() );
- }
-
- static image_type_id image_format_id( format_t const closest_gil_supported_format )
- {
- switch ( closest_gil_supported_format )
- {
- case JCS_RGB : return 0;
- case JCS_GRAYSCALE: return 1;
- case JCS_CMYK : return 2;
- default:
- BOOST_ASSERT( closest_gil_supported_format == JCS_UNKNOWN );
- return unsupported_format;
- }
- }
-
- static std::size_t format_size( format_t const format )
- {
- switch ( format )
- {
- case JCS_RGB:
- case JCS_YCbCr:
- return 3;
- case JCS_CMYK:
- case JCS_YCCK:
- return 4;
- case JCS_GRAYSCALE:
- return 1;
-
- default:
- BOOST_ASSERT( !"Invalid or unknown format specified." ); __assume( false );
- return 0;
- }
- }
-
- //...zzz...
- //std::size_t format_size( format_t const format ) const
- //{
- // BOOST_ASSERT( format_size( format ) == decompressor().output_components );
- // BOOST_ASSERT( decompressor().out_color_components == decompressor().output_components );
- // ignore_unused_variable_warning( format );
- // return decompressor().output_components;
- //}
-
-
-public: /// \ingroup Construction
- explicit libjpeg_image( FILE * const p_file )
- :
- libjpeg_base( for_decompressor() )
- {
- BOOST_ASSERT( p_file );
-
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
-
- jpeg_stdio_src( &decompressor(), p_file );
-
- BOOST_VERIFY( jpeg_read_header( &decompressor(), true ) == JPEG_HEADER_OK );
-
- io_error_if( decompressor().data_precision != 8, "Unsupported image file data precision." );
- }
-
-
-public:
- point2<std::ptrdiff_t> dimensions() const
- {
- return point2<std::ptrdiff_t>( decompressor().image_width, decompressor().image_height );
- }
-
- jpeg_decompress_struct & lib_object() { return decompressor(); }
- jpeg_decompress_struct const & lib_object() const { return const_cast<libjpeg_image &>( *this ).lib_object(); }
-
-private: // Private formatted_image_base interface.
- friend base_t;
- void raw_convert_to_prepared_view( view_data_t const & view_data ) const throw(...)
- {
- setup_decompression( view_data );
-
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
-
- JSAMPROW scanlines[ 4 ] =
- {
- view_data.buffer_,
- scanlines[ 0 ] + view_data.stride_,
- scanlines[ 1 ] + view_data.stride_,
- scanlines[ 2 ] + view_data.stride_
- };
-
- BOOST_ASSERT( _countof( scanlines ) >= decompressor().rec_outbuf_height );
- unsigned int scanlines_to_read( view_data.height_ );
- for ( ; ; )
- {
- BOOST_ASSERT( scanlines_to_read <= ( decompressor().output_height - decompressor().output_scanline ) );
- unsigned int const lines_read
- (
- jpeg_read_scanlines
- (
- &mutable_this().decompressor(),
- scanlines,
- (std::min)( _countof( scanlines ), scanlines_to_read )
- )
- );
- scanlines_to_read -= lines_read;
- if ( !scanlines_to_read )
- return;
-
- scanlines[ 0 ] = scanlines[ lines_read - 1 ] + view_data.stride_;
- scanlines[ 1 ] = scanlines[ 0 ] + view_data.stride_;
- scanlines[ 2 ] = scanlines[ 1 ] + view_data.stride_;
- scanlines[ 3 ] = scanlines[ 2 ] + view_data.stride_;
- }
- }
-
- template <class MyView, class TargetView, class Converter>
- void generic_convert_to_prepared_view( TargetView const & view, Converter const & converter ) const
- {
- typedef typename MyView::value_type pixel_t;
- std::size_t const scanline_length ( decompressor().image_width * decompressor().num_components );
- scoped_ptr<JSAMPLE> const p_scanline_buffer( new JSAMPLE[ scanline_length ] );
- JSAMPROW scanline ( p_scanline_buffer.get() );
- JSAMPROW const scanlineEnd( scanline + scanline_length );
-
- BOOST_ASSERT( closest_gil_supported_format() == view_libjpeg_format::apply<MyView>::value );
- setup_decompression
- (
- decompression_setup_data_t
- (
- view_libjpeg_format::apply<MyView>::value,
- scanline,
- detail::get_offset<offset_t>( view )
- )
- );
-
- BOOST_ASSERT( decompressor().output_width == decompressor().image_width );
- BOOST_ASSERT( decompressor().output_components == decompressor().num_components );
-
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
-
- unsigned int const scanlines_to_read( detail::original_view( view ).dimensions().y );
- for ( unsigned int scanline_index( 0 ); scanline_index < scanlines_to_read; ++scanline_index )
- {
- BOOST_VERIFY
- (
- jpeg_read_scanlines
- (
- &mutable_this().decompressor(),
- &scanline,
- 1
- ) == 1
- );
-
- pixel_t const * p_source_pixel( gil_reinterpret_cast_c<pixel_t const *>( scanline ) );
- typename TargetView::x_iterator p_target_pixel( view.row_begin( scanline_index ) );
- while ( p_source_pixel < gil_reinterpret_cast_c<pixel_t const *>( scanlineEnd ) )
- {
- converter( *p_source_pixel, *p_target_pixel );
- ++p_source_pixel;
- ++p_target_pixel;
- }
- }
- }
-
- void raw_copy_to_prepared_view( view_data_t const & view_data ) const
- {
- BOOST_ASSERT( view_data.width_ == static_cast<unsigned int>( dimensions().x ) );
- BOOST_ASSERT( view_data.height_ == static_cast<unsigned int>( dimensions().y ) );
- BOOST_ASSERT( view_data.format_ == closest_gil_supported_format() );
- raw_convert_to_prepared_view( view_data );
- }
-
-private:
- void setup_decompression( decompression_setup_data_t const & view_data ) const throw(...)
- {
- unsigned int const state ( decompressor().global_state );
- unsigned int rows_to_skip( view_data.offset_ );
- if
- (
- ( state != DSTATE_SCANNING ) ||
- ( decompressor().out_color_space != view_data.format_ ) ||
- ( decompressor().output_scanline > static_cast<JDIMENSION>( view_data.offset_ ) )
- )
- {
- BOOST_ASSERT
- (
- ( state == DSTATE_READY ) ||
- ( state == DSTATE_SCANNING )
- );
-
- if ( setjmp( error_handler_target() ) )
- throw_jpeg_error();
-
- if ( state == DSTATE_SCANNING )
- abort();
-
- mutable_this().decompressor().out_color_space = view_data.format_;
- BOOST_VERIFY( jpeg_start_decompress( &mutable_this().decompressor() ) );
- BOOST_ASSERT( decompressor().output_scanline == 0 );
- }
- else
- rows_to_skip -= decompressor().output_scanline;
-
- if ( rows_to_skip )
- skip_rows( rows_to_skip, view_data.buffer_ );
- BOOST_ASSERT( decompressor().output_scanline == static_cast<JDIMENSION>( view_data.offset_ ) );
- }
-
- void skip_rows( unsigned int const number_of_rows_to_skip, JSAMPROW /*const*/ dummy_scanline_buffer ) const
- {
- BOOST_ASSERT( decompressor().raw_data_out == false );
- BOOST_ASSERT( decompressor().global_state == DSTATE_SCANNING );
- mutable_this().decompressor().raw_data_out = true;
- mutable_this().decompressor().global_state = DSTATE_RAW_OK;
-
- std::size_t const max_number_of_components( 4 ); // CMYK
- std::size_t const max_sampling_factor ( 2 ); // Documentation
- std::size_t const mcu_row_size ( max_sampling_factor * DCTSIZE ); // Documentation
- BOOST_ASSERT( decompressor().num_components <= max_number_of_components );
- BOOST_ASSERT( decompressor().max_v_samp_factor <= max_sampling_factor );
-
- JSAMPROW dummy_component_2d_array[ mcu_row_size ];
- JSAMPARRAY dummy_scan_lines [ max_number_of_components ];
-
- std::fill( begin( dummy_component_2d_array ), end( dummy_component_2d_array ), dummy_scanline_buffer );
- std::fill( begin( dummy_scan_lines ), end( dummy_scan_lines ), &dummy_component_2d_array[ 0 ] );
-
- unsigned int number_of_rows_to_skip_using_scanlines
- (
- number_of_rows_to_skip % mcu_row_size
- );
- unsigned int number_of_rows_to_skip_using_raw
- (
- number_of_rows_to_skip - number_of_rows_to_skip_using_scanlines
- );
-
- while ( number_of_rows_to_skip_using_raw )
- {
- unsigned int const lines_to_read( _countof( dummy_component_2d_array ) );
- BOOST_VERIFY
- (
- jpeg_read_raw_data
- (
- &mutable_this().decompressor(),
- dummy_scan_lines,
- lines_to_read
- ) == lines_to_read
- );
- number_of_rows_to_skip_using_raw -= lines_to_read;
- }
-
- mutable_this().decompressor().raw_data_out = false;
- mutable_this().decompressor().global_state = DSTATE_SCANNING;
- while ( number_of_rows_to_skip_using_scanlines-- )
- {
- BOOST_VERIFY
- (
- jpeg_read_scanlines
- (
- &mutable_this().decompressor(),
- &dummy_scanline_buffer,
- 1
- ) == 1
- );
- }
- }
-
- libjpeg_image & mutable_this() const { return static_cast<libjpeg_image &>( libjpeg_base::mutable_this() ); }
-
-private:
- friend class libjpeg_view_base;
-
-};
-
-#if defined(BOOST_MSVC)
-# pragma warning( pop )
-#endif
-
-
-//...zzz...incomplete...
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \class libjpeg_view_base
-///
-////////////////////////////////////////////////////////////////////////////////
-
-//class libjpeg_view_base : noncopyable
-//{
-//public:
-// ~libjpeg_view_base()
-// {
-// }
-//
-//protected:
-// libjpeg_view_base( libjpeg_image & bitmap, unsigned int const lock_mode, libjpeg_image::roi const * const p_roi = 0 )
-// {
-// }
-//
-// template <typename Pixel>
-// typename type_from_x_iterator<Pixel *>::view_t
-// get_typed_view()
-// {
-// //todo assert correct type...
-// interleaved_view<Pixel *>( bitmapData_.Width, bitmapData_.Height, bitmapData_.Scan0, bitmapData_.Stride );
-// }
-//
-//private:
-//};
-
-
-//...zzz...incomplete...
-////////////////////////////////////////////////////////////////////////////////
-///
-/// \class libjpeg_view
-///
-////////////////////////////////////////////////////////////////////////////////
-
-//template <typename Pixel>
-//class libjpeg_view
-// :
-// private libjpeg_view_base,
-// public type_from_x_iterator<Pixel *>::view_t
-//{
-//public:
-// libjpeg_view( libjpeg_image & image, libjpeg_image::roi const * const p_roi = 0 )
-// :
-// libjpeg_view_base( image, ImageLockModeRead | ( is_const<Pixel>::value * ImageLockModeWrite ), p_roi ),
-// type_from_x_iterator<Pixel *>::view_t( get_typed_view<Pixel>() )
-// {}
-//};
-
-
-//------------------------------------------------------------------------------
-} // namespace detail
-//------------------------------------------------------------------------------
-} // namespace gil
-//------------------------------------------------------------------------------
-} // namespace boost
-//------------------------------------------------------------------------------
-#endif // libjpeg_private_base_hpp


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