* psd: support for extracting scaling-data of text-layer, and extracting sheet-color...

[casparcg] / modules / psd / layer.cpp

diff --git a/modules/psd/layer.cpp b/modules/psd/layer.cpp
index 8369c5d0fa17e22a65416ec6a8cd75cb457ac877..40906e0ae2fb8475a2eb3a615bfe8e9aaeb22357 100644 (file)
--- a/modules/psd/layer.cpp
+++ b/modules/psd/layer.cpp
@@ -22,6 +22,7 @@
 #include "layer.h"
 #include "doc.h"
 #include "descriptor.h"
+#include <common/log.h>
 #include "util\pdf_reader.h"
 
 #include <algorithm>
@@ -74,7 +75,7 @@ struct layer::impl
 {
        friend class layer;
 
-       impl() : blend_mode_(InvalidBlendMode), link_group_id_(0), opacity_(255), baseClipping_(false), flags_(0), protection_flags_(0), masks_count_(0)
+       impl() : blend_mode_(InvalidBlendMode), link_group_id_(0), opacity_(255), sheet_color_(0), baseClipping_(false), flags_(0), protection_flags_(0), masks_count_(0), text_scale_(1.0f)
        {}
 
 private:
@@ -82,11 +83,13 @@ private:
        blend_mode                                              blend_mode_;
        int                                                             link_group_id_;
        unsigned char                                   opacity_;
+       unsigned short                                  sheet_color_;
        bool                                                    baseClipping_;
        unsigned char                                   flags_;
        int                                                             protection_flags_;
        std::wstring                                    name_;
        char                                                    masks_count_;
+       float                                                   text_scale_;
 
        rect<long>                                              vector_mask_;
        layer::layer_mask_info                  mask_;
@@ -191,6 +194,10 @@ public:
                        case 'shmd':    //metadata
                                read_metadata(stream, doc);
                                break;
+
+                       case 'lclr':
+                               sheet_color_ = stream.read_short();
+                               break;
                                
                        case 'lyvr':    //layer version
                                break;
@@ -212,9 +219,10 @@ public:
                                break;
                        }
                }
-               catch(PSDFileFormatException&)
+               catch(PSDFileFormatException& ex)
                {
                        //ignore failed chunks silently
+                       CASPAR_LOG(warning) << ex.what();
                }
 
                stream.set_position(end_of_chunk);
@@ -227,7 +235,7 @@ public:
 
                descriptor solid_descriptor;
                if(!solid_descriptor.populate(stream))
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("Failed to read solid color data");
                else
                {
                        solid_color_.red = static_cast<unsigned char>(solid_descriptor.items().get(L"Clr .Rd  ", 0.0) + 0.5);
@@ -326,16 +334,20 @@ public:
                double yy = stream.read_double();
                double tx = stream.read_double();
                double ty = stream.read_double();
+               if(xx != yy || (xy != 0 && yx != 0))
+                       throw PSDFileFormatException("Rotation and non-uniform scaling of dynamic textfields is not supported yet");
+
+               text_scale_ = static_cast<float>(xx);
 
                if(stream.read_short() != 50)   //"text version" should be 50
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("invalid text version");
 
                if(stream.read_long() != 16)    //"descriptor version" should be 16
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("Invalid descriptor version while reading text-data");
 
                descriptor text_descriptor;
                if(!text_descriptor.populate(stream))
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("Failed to read text-info");
                else
                {
                        auto text_info = text_descriptor.items().get_optional<std::wstring>(L"EngineData");
@@ -347,16 +359,21 @@ public:
                }
 
                if(stream.read_short() != 1)    //"warp version" should be 1
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("invalid warp version");
 
                if(stream.read_long() != 16)    //"descriptor version" should be 16
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("Invalid descriptor version while reading text warp-data");
 
                descriptor warp_descriptor;
                if(!warp_descriptor.populate(stream))
-                       throw PSDFileFormatException();
+                       throw PSDFileFormatException("Failed to read text warp-data");
                else
-                       stream.discard_bytes(4*8);      //top, left, right, bottom
+               {
+                       double w_top = stream.read_double();
+                       double w_left = stream.read_double();
+                       double w_right = stream.read_double();
+                       double w_bottom = stream.read_double();
+               }
        }
 
        //TODO: implement
@@ -543,11 +560,12 @@ void layer::read_channel_data(BEFileInputStream& stream) { impl_->read_channel_d
 
 const std::wstring& layer::name() const { return impl_->name_; }
 unsigned char layer::opacity() const { return impl_->opacity_; }
+unsigned short layer::sheet_color() const { return impl_->sheet_color_; }
 
 bool layer::is_visible() { return (impl_->flags_ & 2) == 0; }  //the (PSD file-format) documentation is is saying the opposite but what the heck
 bool layer::is_position_protected() { return (impl_->protection_flags_& 4) == 4; }
 
-
+float layer::text_scale() const { return impl_->text_scale_; }
 bool layer::is_text() const { return !impl_->text_layer_info_.empty(); }
 const boost::property_tree::wptree& layer::text_data() const { return impl_->text_layer_info_; }