// Solid color sheet setting (Photoshop 6.0)
psd_status psd_get_layer_solid_color(psd_context * context, psd_layer_record * layer)
{
psd_layer_solid_color * data;
psd_int length, number_items;
psd_uint key;
layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_solid_color;
layer->layer_type = psd_layer_type_solid_color;
data = (psd_layer_solid_color *)psd_malloc(sizeof(psd_layer_solid_color));
if(data == NULL)
return psd_status_malloc_failed;
memset(data, 0, sizeof(psd_layer_solid_color));
layer->layer_info_data[layer->layer_info_count] = (psd_uint)data;
layer->layer_info_count ++;
// Version ( = 16 for Photoshop 6.0)
if(psd_stream_get_int(context) != 16)
return psd_status_solid_color_unsupport_version;
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
psd_assert(length == 0);
data->id = psd_stream_get_int(context);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
// should be 1
psd_assert(number_items == 1);
// The following is repeated for each item in descriptor
// Key: 4 bytes ( length) followed either by string or (if length is zero) 4-byte key
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
psd_assert(key == 'Clr ');
// Type: OSType key
key = psd_stream_get_int(context);
psd_assert(key == 'Objc');
data->fill_color = psd_stream_get_object_color(context);
return psd_status_done;
}
psd_status psd_get_layer_threshold(psd_context * context, psd_layer_record * layer)
{
psd_layer_threshold * data;
layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_threshold;
layer->layer_type = psd_layer_type_threshold;
data = (psd_layer_threshold *)psd_malloc(sizeof(psd_layer_threshold));
if(data == NULL)
return psd_status_malloc_failed;
memset(data, 0, sizeof(psd_layer_threshold));
layer->layer_info_data[layer->layer_info_count] = (psd_uint)data;
layer->layer_info_count ++;
// (1...255)
data->level = psd_stream_get_short(context);
psd_assert(data->level >= 1 && data->level <= 255);
// for padding ?
psd_stream_get_short(context);
layer->adjustment_valid = psd_true;
return psd_status_done;
}
psd_status psd_get_layer_vector_mask(psd_context * context, psd_layer_record * layer, psd_int size)
{
psd_uint tag;
// Version ( = 3 for Photoshop 6.0)
psd_assert(psd_stream_get_int(context) == 3);
// Flags. bit 1 = invert, bit 2 = not link, bit 3 = disable
tag = psd_stream_get_int(context);
layer->vector_mask.invert = tag & 0x01;
layer->vector_mask.not_link = (tag & (0x01 << 1)) > 0;
layer->vector_mask.disable = (tag & (0x01 << 2)) > 0;
// The rest of the data is path components, loop until end of the length
layer->vector_mask.path = (psd_path *)psd_malloc(sizeof(psd_path));
if(layer->vector_mask.path == NULL)
return psd_status_malloc_failed;
psd_get_path_record(context, layer->vector_mask.path, size - 8);
return psd_status_done;
}
psd_static psd_status psd_main_loop(psd_context * context)
{
psd_status status = psd_status_done;
while(status == psd_status_done)
{
if(context->stream.file_length <= 0)
{
status = psd_status_fread_error;
break;
}
switch(context->state)
{
case PSD_FILE_HEADER:
status = psd_get_file_header(context);
if(status == psd_status_done)
{
if (context->load_tag == psd_load_tag_header)
context->state = PSD_DONE;
else
context->state = PSD_COLOR_MODE_DATA;
}
else if(status == psd_status_unkown_error)
status = psd_status_file_header_error;
break;
case PSD_COLOR_MODE_DATA:
status = psd_get_color_mode_data(context);
if(status == psd_status_done)
context->state = PSD_IMAGE_RESOURCE;
else if(status == psd_status_unkown_error)
status = psd_status_color_mode_data_error;
break;
case PSD_IMAGE_RESOURCE:
status = psd_get_image_resource(context);
if(status == psd_status_done)
context->state = PSD_LAYER_AND_MASK_INFORMATION;
else if(status == psd_status_unkown_error)
status = psd_status_image_resource_error;
break;
case PSD_LAYER_AND_MASK_INFORMATION:
status = psd_get_layer_and_mask(context);
if(status == psd_status_done)
context->state = PSD_IMAGE_DATA;
else if(status == psd_status_unkown_error)
status = psd_status_layer_and_mask_error;
break;
case PSD_IMAGE_DATA:
status = psd_get_image_data(context);
if(status == psd_status_done)
context->state = PSD_DONE;
else if(status == psd_status_unkown_error)
status = psd_status_image_data_error;
break;
case PSD_DONE:
return psd_status_done;
default:
psd_assert(0);
return psd_status_unkown_error;
}
}
return status;
}
// The file header contains the basic properties of the image
// input: context, the context of psd file
// output: status of done
psd_status psd_get_file_header(psd_context * context)
{
psd_file_header_binary header;
if(psd_stream_get(context, (psd_uchar *)&header, sizeof(psd_file_header_binary)) == sizeof(psd_file_header_binary))
{
// Signature: always equal to '8BPS'
if(memcmp(header.signature, "8BPS", 4) != 0)
return psd_status_file_signature_error;
// Version: always equal to 1
if(PSD_CHAR_TO_SHORT(header.version) != 1)
return psd_status_file_version_error;
// The height of the image in pixels
context->height = PSD_CHAR_TO_INT(header.height_of_image);
// Supported range is 1 to 30,000
psd_assert(context->height >= 1 && context->height <= 30000);
// The width of the image in pixels
context->width = PSD_CHAR_TO_INT(header.width_of_image);
// Supported range is 1 to 30,000
psd_assert(context->width >= 1 && context->width <= 30000);
// The number of channels in the image, including any alpha channels
context->color_channels = context->channels = PSD_CHAR_TO_SHORT(header.number_of_channels);
// Supported range is 1 to 56.
psd_assert(context->channels >= 1 && context->channels <= 56);
// Depth: the number of bits per channel
context->depth = PSD_CHAR_TO_SHORT(header.depth);
// Supported values are 1, 8, and 16.
psd_assert(context->depth == 1 || context->depth == 8 || context->depth == 16);
if(context->depth != 1 && context->depth != 8 && context->depth != 16)
return psd_status_unsupport_color_depth;
// The color mode of the file
context->color_mode = (psd_color_mode)PSD_CHAR_TO_SHORT(header.color_mode);
switch(context->color_mode)
{
case psd_color_mode_bitmap:
case psd_color_mode_grayscale:
case psd_color_mode_indexed:
case psd_color_mode_rgb:
case psd_color_mode_duotone:
break;
case psd_color_mode_cmyk:
#ifndef PSD_SUPPORT_CMYK
return psd_status_unknown_color_mode;
#endif
break;
case psd_color_mode_lab:
#ifndef PSD_SUPPORT_LAB
return psd_status_unknown_color_mode;
#endif
break;
case psd_color_mode_multichannel:
#ifndef PSD_SUPPORT_MULTICHANNEL
return psd_status_unknown_color_mode;
#endif
break;
default:
psd_assert(0);
return psd_status_unknown_color_mode;
}
}
else
{
return psd_status_fread_error;
}
return psd_status_done;
}
psd_status psd_get_layer_drop_shadow2(psd_context * context, psd_layer_effects_drop_shadow * drop_shadow)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_drop_shadow_default(drop_shadow);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
case 0:
// layer knocks out drop shadow
if(strcmp(keychar, "layerConceals") == 0)
{
psd_assert(type == 'bool');
drop_shadow->knocks_out = psd_stream_get_bool(context);
}
else
{
psd_assert(0);
}
break;
// effect enable
case 'enab':
psd_assert(type == 'bool');
drop_shadow->effect_enable = psd_stream_get_bool(context);
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// blend mode
psd_assert(key == 'BlnM');
drop_shadow->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// color or native color
case 'Clr ':
// Descriptor
psd_assert(type == 'Objc');
drop_shadow->color = drop_shadow->native_color = psd_stream_get_object_color(context);
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
drop_shadow->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// use global light
case 'uglg':
psd_assert(type == 'bool');
drop_shadow->use_global_light = psd_stream_get_bool(context);
break;
// angle
case 'lagl':
psd_assert(type == 'UntF');
// angle: base degrees
key = psd_stream_get_int(context);
psd_assert(key == '#Ang');
drop_shadow->angle = (psd_int)psd_stream_get_double(context);
break;
// distance
case 'Dstn':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
drop_shadow->distance = (psd_int)psd_stream_get_double(context);
break;
// spread
case 'Ckmt':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
drop_shadow->spread = (psd_int)psd_stream_get_double(context);
break;
// size
case 'blur':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
drop_shadow->size = (psd_int)psd_stream_get_double(context);
break;
// noise
case 'Nose':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
drop_shadow->noise = (psd_int)psd_stream_get_double(context);
break;
// anti-aliased
case 'AntA':
psd_assert(type == 'bool');
drop_shadow->anti_aliased = psd_stream_get_bool(context);
break;
// contour
case 'TrnS':
psd_assert(type == 'Objc');
psd_stream_get_object_contour(drop_shadow->contour_lookup_table, context);
break;
default:
psd_assert(0);
break;
}
}
return psd_status_done;
}
psd_status psd_get_layer_color_overlay2(psd_context * context, psd_layer_effects_color_overlay * color_overlay)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_color_overlay_default(color_overlay);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
psd_assert(length == 0);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
// effect enable
case 'enab':
psd_assert(type == 'bool');
color_overlay->effect_enable = psd_stream_get_bool(context);
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// blend mode
psd_assert(key == 'BlnM');
color_overlay->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
color_overlay->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// color or native color
case 'Clr ':
// Descriptor
psd_assert(type == 'Objc');
color_overlay->color = color_overlay->native_color = psd_stream_get_object_color(context);
break;
default:
psd_assert(0);
break;
}
}
return psd_status_done;
}
// Additional layer -- levels
// Levels settings files are loaded and saved in the Levels dialog.
psd_status psd_get_layer_levels(psd_context * context, psd_layer_record * layer, psd_int data_length)
{
psd_layer_levels * data;
psd_int i, prev_stream_pos = context->stream.current_pos;
psd_uint tag;
layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_levels;
layer->layer_type = psd_layer_type_levels;
data = (psd_layer_levels *)psd_malloc(sizeof(psd_layer_levels));
if(data == NULL)
return psd_status_malloc_failed;
memset(data, 0, sizeof(psd_layer_levels));
layer->layer_info_data[layer->layer_info_count] = (psd_uint)data;
layer->layer_info_count ++;
// Version ( = 2)
if(psd_stream_get_short(context) != 2)
return psd_status_levels_unsupport_version;
// 29 sets of level records, each level containing 5 psd_short integers
for(i = 0; i < 29; i ++)
{
// Input floor (0...253)
data->record[i].input_floor = psd_stream_get_short(context);
// Input ceiling (2...255)
data->record[i].input_ceiling = psd_stream_get_short(context);
// Output floor (0...255). Matched to input floor.
data->record[i].output_floor = psd_stream_get_short(context);
// Output ceiling (0...255)
data->record[i].output_ceiling = psd_stream_get_short(context);
// Gamma. Short integer from 10...999 representing 0.1...9.99. Applied
// to all image data.
data->record[i].gamma = psd_stream_get_short(context) / 100.0f;
// Sets 28 and 29 are reserved and should be set to zeros.
if(i < 27)
{
psd_assert(data->record[i].input_floor >= 0 && data->record[i].input_floor <= 255);
psd_assert(data->record[i].input_ceiling >= 2 && data->record[i].input_ceiling <= 255);
psd_assert(data->record[i].output_floor >= 0 && data->record[i].output_floor <= 255);
psd_assert(data->record[i].output_ceiling >= 0 && data->record[i].output_ceiling <= 255);
psd_assert(data->record[i].gamma >= 0.1 && data->record[i].gamma <= 9.99);
}
}
// Photoshop CS (8.0) Additional information
// At the end of the Version 2 file is the following information
if(context->stream.current_pos - prev_stream_pos < data_length - 4)
{
// = 'Lvls' for extra level information
tag = psd_stream_get_int(context);
if(tag != 'Lvls')
return psd_status_extra_levels_key_error;
// Version ( = 3)
if(psd_stream_get_short(context) != 3)
return psd_status_extra_levels_unsupport_version;
// Count of total level record structures. Subtract the legacy number of
// level record structures, 29, to determine how many are remaining in
// the file for reading.
data->extra_level_count = psd_stream_get_short(context) - 29;
psd_assert(data->extra_level_count >= 0);
data->extra_record = (psd_layer_level_record *)psd_malloc(data->extra_level_count * sizeof(psd_layer_level_record));
if(data->extra_record == NULL)
return psd_status_malloc_failed;
memset(data->extra_record, 0, data->extra_level_count * sizeof(psd_layer_level_record));
// Additianol level records according to count.
for(i = 0; i < data->extra_level_count; i ++)
{
// Input floor (0...253)
data->extra_record[i].input_floor = psd_stream_get_short(context);
// Input ceiling (2...255)
data->extra_record[i].input_ceiling = psd_stream_get_short(context);
// Output floor (0...255). Matched to input floor.
data->extra_record[i].output_floor = psd_stream_get_short(context);
// Output ceiling (0...255)
data->extra_record[i].output_ceiling = psd_stream_get_short(context);
// Gamma. Short integer from 10...999 representing 0.1...9.99. Applied
// to all image data.
data->extra_record[i].gamma = psd_stream_get_short(context) / 100.0f;
// Sets 28 and 29 are reserved and should be set to zeros.
}
}
if(context->stream.current_pos - prev_stream_pos != data_length)
return psd_status_levels_dismatch_data_length;
layer->adjustment_valid = psd_true;
return psd_status_done;
}
psd_status psd_layer_effects_blend_stroke(psd_context * context, psd_layer_record * layer, psd_layer_effects * data)
{
psd_layer_effects_stroke * stroke = &data->stroke;
psd_int i, width, height, center_x, center_y, radius_x, radius_y, radius_corner;
psd_int corner_angle, angle;
psd_int sign_x = 1, sign_y = 1;
psd_bitmap layer_bmp, src_bmp, dst_bmp;
psd_layer_mask_info layer_mask_info;
width = layer->width + stroke->size * 2;
height = layer->height + stroke->size * 2;
data->left[psd_layer_effects_type_stroke] = -stroke->size;
data->top[psd_layer_effects_type_stroke] = -stroke->size;
data->right[psd_layer_effects_type_stroke] = layer->width + stroke->size;
data->bottom[psd_layer_effects_type_stroke] = layer->height + stroke->size;
data->blend_mode[psd_layer_effects_type_stroke] = stroke->blend_mode;
data->opacity[psd_layer_effects_type_stroke] = stroke->opacity;
if(data->image_data[psd_layer_effects_type_stroke] != NULL)
{
if(data->width[psd_layer_effects_type_stroke] != width ||
data->height[psd_layer_effects_type_stroke] != height)
{
psd_free(data->image_data[psd_layer_effects_type_stroke]);
data->image_data[psd_layer_effects_type_stroke] = (psd_argb_color *)psd_malloc(width * height * 4);
if(data->image_data[psd_layer_effects_type_stroke] == NULL)
return psd_status_malloc_failed;
}
}
else
{
data->image_data[psd_layer_effects_type_stroke] = (psd_argb_color *)psd_malloc(width * height * 4);
if(data->image_data[psd_layer_effects_type_stroke] == NULL)
return psd_status_malloc_failed;
}
data->width[psd_layer_effects_type_stroke] = width;
data->height[psd_layer_effects_type_stroke] = height;
layer_bmp.width = layer->width;
layer_bmp.height = layer->height;
layer_bmp.image_data = layer->image_data;
psd_create_bitmap(&src_bmp, width, height);
psd_inflate_bitmap(&src_bmp, &layer_bmp, stroke->size, stroke->size);
dst_bmp.width = width;
dst_bmp.height = height;
dst_bmp.image_data = data->image_data[psd_layer_effects_type_stroke];
psd_fill_bitmap(&dst_bmp, psd_color_clear);
switch(stroke->position)
{
case psd_stroke_outside:
psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size * 2);
psd_bitmap_find_edge(&src_bmp, psd_true);
psd_bitmap_knock_out(&dst_bmp, &src_bmp);
break;
case psd_stroke_inside:
psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size * 2);
psd_bitmap_find_edge(&src_bmp, psd_true);
psd_bitmap_reverse_alpha_channel(&src_bmp);
psd_bitmap_knock_out(&dst_bmp, &src_bmp);
break;
case psd_stroke_center:
psd_draw_stroke(&dst_bmp, &src_bmp, stroke->size);
break;
default:
psd_assert(0);
break;
}
psd_inflate_bitmap(&src_bmp, &layer_bmp, stroke->size, stroke->size);
memcpy(&layer_mask_info, &layer->layer_mask_info, sizeof(psd_layer_mask_info));
if(layer_mask_info.disabled == psd_false && (layer_mask_info.default_color != 255 || layer_mask_info.mask_data != NULL))
{
layer_mask_info.left -= layer->left - stroke->size;
layer_mask_info.top -= layer->top - stroke->size;
layer_mask_info.right -= layer->left - stroke->size;
layer_mask_info.bottom -= layer->top - stroke->size;
psd_bitmap_blend_mask(&src_bmp, &layer_mask_info);
}
psd_bitmap_reverse_mixed_alpha_channel(&src_bmp);
psd_bitmap_blend_alpha_channel(&dst_bmp, &src_bmp);
switch(stroke->fill_type)
{
case psd_fill_solid_color:
psd_fill_bitmap_without_alpha_channel(&dst_bmp, stroke->fill_color);
break;
case psd_fill_gradient:
if(stroke->gradient_align == psd_false)
{
center_x = context->width / 2 + stroke->gradient_horz_offset * context->width / 100;
center_y = context->height / 2 + stroke->gradient_vert_offset * context->height / 100;
center_x -= layer->left;
center_y -= layer->top;
corner_angle = (psd_int)(atan((psd_float)context->height / context->width) * 180 / PSD_PI + 0.5);
angle = stroke->gradient_angle;
width = (context->width * stroke->gradient_scale + 100) / 200;
height = (context->height * stroke->gradient_scale + 100) / 200;
}
else
{
center_x = width / 2 + stroke->gradient_horz_offset * layer->width / 100;
center_y = height / 2 + stroke->gradient_vert_offset * layer->height / 100;
switch(stroke->position)
{
case psd_stroke_outside:
width = layer->width + stroke->size * 2;
height = layer->height + stroke->size * 2;
break;
case psd_stroke_inside:
width = layer->width;
height = layer->height;
break;
case psd_stroke_center:
width = layer->width + stroke->size;
height = layer->height + stroke->size;
break;
}
center_x += stroke->gradient_horz_offset * width / 100;
center_y += stroke->gradient_vert_offset * height / 100;
corner_angle = (psd_int)(atan((psd_float)height / width) * 180 / PSD_PI + 0.5);
angle = stroke->gradient_angle;
width = (width * stroke->gradient_scale + 100) / 200;
height = (height * stroke->gradient_scale + 100) / 200;
}
if(angle < 0)
angle += 360;
if(angle >= 90 && angle < 180)
{
angle = 180 - angle;
sign_x = -1;
}
else if(angle >= 180 && angle < 270)
{
angle = angle - 180;
sign_x = -1;
sign_y = -1;
}
else if(angle >= 270 && angle <= 360)
{
angle = 360 - angle;
sign_y = -1;
}
if(angle <= corner_angle)
{
radius_x = width;
radius_y = (psd_int)(radius_x * PSD_TAN(angle) + 0.5);
}
else
{
radius_y = height;
radius_x = (psd_int)(radius_y / PSD_TAN(angle) + 0.5);
}
radius_corner = (psd_int)(psd_carm_sqrt((psd_float)(radius_x * radius_x + radius_y * radius_y)) + 0.5);
switch(stroke->gradient_style)
{
case psd_gradient_style_linear:
psd_gradient_fill_linear(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
break;
case psd_gradient_style_radial:
psd_gradient_fill_radial(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
center_x, center_y, radius_corner);
break;
case psd_gradient_style_angle:
psd_gradient_fill_angle(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
center_x, center_y, stroke->gradient_angle);
break;
case psd_gradient_style_reflected:
psd_gradient_fill_reflected(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
break;
case psd_gradient_style_diamond:
psd_gradient_fill_diamond(&src_bmp, &stroke->gradient_color, stroke->gradient_reverse,
center_x, center_y, radius_corner, stroke->gradient_angle);
break;
default:
psd_assert(0);
break;
}
psd_bitmap_copy_without_alpha_channel(&dst_bmp, &src_bmp);
break;
case psd_fill_pattern:
for(i = 0; i < context->pattern_count; i ++)
{
if(strcmp(context->patterns[i].unique_id, stroke->pattern_info.identifier) == 0)
{
psd_pattern_fill(&src_bmp, &context->patterns[i], stroke->pattern_scale,
stroke->pattern_horz_phase + stroke->size,
stroke->pattern_vert_phase + stroke->size);
break;
}
}
psd_bitmap_copy_without_alpha_channel(&dst_bmp, &src_bmp);
break;
default:
psd_assert(0);
break;
}
psd_free_bitmap(&src_bmp);
data->valid[psd_layer_effects_type_stroke] = psd_false;
return psd_status_done;
}
psd_status psd_get_layer_inner_glow2(psd_context * context, psd_layer_effects_inner_glow * inner_glow)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_inner_glow_default(inner_glow);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
psd_assert(length == 0);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
// effect enable
case 'enab':
psd_assert(type == 'bool');
inner_glow->effect_enable = psd_stream_get_bool(context);
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// blend mode
psd_assert(key == 'BlnM');
inner_glow->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// color or native color
case 'Clr ':
// Descriptor
psd_assert(type == 'Objc');
inner_glow->color = inner_glow->native_color = psd_stream_get_object_color(context);
inner_glow->fill_type = psd_fill_solid_color;
break;
// gradient color
case 'Grad':
// Descriptor
psd_assert(type == 'Objc');
psd_stream_get_object_gradient_color(&inner_glow->gradient_color, context);
inner_glow->fill_type = psd_fill_gradient;
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
inner_glow->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// technique
case 'GlwT':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// Matte Technique
psd_assert(key == 'BETE');
inner_glow->technique = psd_stream_get_object_technique(context);
break;
// choke
case 'Ckmt':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
inner_glow->choke = (psd_int)psd_stream_get_double(context);
break;
// size
case 'blur':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
inner_glow->size = (psd_int)psd_stream_get_double(context);
break;
// jitter
case 'ShdN':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
inner_glow->jitter = (psd_int)psd_stream_get_double(context);
break;
// noise
case 'Nose':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
inner_glow->noise = (psd_int)psd_stream_get_double(context);
break;
// anti-aliased
case 'AntA':
psd_assert(type == 'bool');
inner_glow->anti_aliased = psd_stream_get_bool(context);
break;
// source
case 'glwS':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// inner glow source
psd_assert(key == 'IGSr');
length = psd_stream_get_int(context);
if(length == 0)
key = psd_stream_get_int(context);
else
{
key = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
switch(key)
{
case 'SrcC':
inner_glow->source = psd_glow_center;
break;
case 'SrcE':
inner_glow->source = psd_glow_edge;
break;
default:
psd_assert(0);
break;
}
break;
// contour
case 'TrnS':
psd_assert(type == 'Objc');
psd_stream_get_object_contour(inner_glow->contour_lookup_table, context);
break;
// range
case 'Inpr':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
inner_glow->range = (psd_int)psd_stream_get_double(context);
break;
default:
psd_assert(0);
psd_stream_get_object_null(type, context);
break;
}
}
return psd_status_done;
}
// Type Tool Info (Photoshop 5.0 and 5.5 only)
psd_status psd_get_layer_type_tool(psd_context * context, psd_layer_record * layer)
{
psd_layer_type_tool * data;
psd_int i, j, length;
layer->layer_info_type[layer->layer_info_count] = psd_layer_info_type_type_tool;
data = (psd_layer_type_tool *)psd_malloc(sizeof(psd_layer_type_tool));
if(data == NULL)
return psd_status_malloc_failed;
memset(data, 0, sizeof(psd_layer_type_tool));
layer->layer_info_data[layer->layer_info_count] = (psd_uint)data;
layer->layer_info_count ++;
// Version ( = 1)
psd_assert(psd_stream_get_short(context) == 1);
// 6 * 8 double precision numbers for the transform information
for(i = 0; i < 6; i ++)
data->transform_info[i] = psd_stream_get_double(context);
/***********************************************************************/
// Font information
/***********************************************************************/
// Version ( = 6)
psd_assert(psd_stream_get_short(context) == 6);
// Count of faces
data->faces_count = psd_stream_get_short(context);
data->face = (psd_layer_type_face *)psd_malloc(data->faces_count * sizeof(psd_layer_type_face));
if(data->face == NULL)
return psd_status_malloc_failed;
memset(data->face, 0, data->faces_count * sizeof(psd_layer_type_face));
// The next 8 fields are repeated for each count specified above
for(i = 0; i < data->faces_count; i ++)
{
// Mark value
data->face[i].mark = psd_stream_get_short(context);
// Font type data
data->face[i].font_type = psd_stream_get_int(context);
// Pascal string of font name
length = psd_stream_get_char(context);
psd_stream_get(context, data->face[i].font_name, length);
// Pascal string of font family name
length = psd_stream_get_char(context);
psd_stream_get(context, data->face[i].font_family_name, length);
// Pascal string of font style name
length = psd_stream_get_char(context);
psd_stream_get(context, data->face[i].font_style_name, length);
// Script value
data->face[i].script = psd_stream_get_short(context);
// Number of design axes vector to follow
data->face[i].number_axes_vector = psd_stream_get_int(context);
data->face[i].vector = (psd_int *)psd_malloc(data->face[i].number_axes_vector * 4);
if(data->face[i].vector == NULL)
return psd_status_malloc_failed;
// Design vector value
for(j = 0; j < data->face[i].number_axes_vector; j ++)
data->face[i].vector[j] = psd_stream_get_int(context);
}
/***********************************************************************/
// Style information
/***********************************************************************/
// Count of styles
data->styles_count = psd_stream_get_short(context);
data->style = (psd_layer_type_style *)psd_malloc(data->styles_count * sizeof(psd_layer_type_style));
if(data->style == NULL)
return psd_status_malloc_failed;
memset(data->style, 0, data->styles_count * sizeof(psd_layer_type_style));
// The next 10 fields are repeated for each count specified above
for(i = 0; i < data->styles_count; i ++)
{
// Mark value
data->style[i].mark = psd_stream_get_short(context);
// Face mark value
data->style[i].face_mark = psd_stream_get_short(context);
// Size value
data->style[i].size = psd_stream_get_int(context);
// Tracking value
data->style[i].tracking = psd_stream_get_int(context);
// Kerning value
data->style[i].kerning = psd_stream_get_int(context);
// Leading value
data->style[i].leading = psd_stream_get_int(context);
// Base shift value
data->style[i].base_shift = psd_stream_get_int(context);
// Auto kern on/off
data->style[i].auto_kern = psd_stream_get_bool(context);
// Only present in version <= 5
psd_stream_get_char(context);
// Rotate up/down
data->style[i].rotate = psd_stream_get_bool(context);
}
/***********************************************************************/
// Text information
/***********************************************************************/
// Type value
data->type = psd_stream_get_short(context);
// Scaling factor value
data->scaling_factor = psd_stream_get_int(context);
// Sharacter count value
data->sharacter_count = psd_stream_get_int(context);
// Horizontal placement
data->horz_place = psd_stream_get_int(context);
// Vertical placement
data->vert_place = psd_stream_get_int(context);
// Select start value
data->select_start = psd_stream_get_int(context);
// Select end value
data->select_end = psd_stream_get_int(context);
// Line count
data->lines_count = psd_stream_get_short(context);
data->line = (psd_layer_type_line *)psd_malloc(data->lines_count * sizeof(psd_layer_type_line));
if(data->line == NULL)
return psd_status_malloc_failed;
memset(data->line, 0, data->lines_count * sizeof(psd_layer_type_line));
// The next 5 fields are repeated for each item in line count.
for(i = 0; i < data->lines_count; i ++)
{
// Character count value
data->line[i].char_count = psd_stream_get_int(context);
// Orientation value
data->line[i].orientation = psd_stream_get_short(context);
// Alignment value
data->line[i].alignment = psd_stream_get_short(context);
// Actual character as a double byte character
data->line[i].actual_char = psd_stream_get_short(context);
// Style value
data->line[i].style = psd_stream_get_short(context);
}
/***********************************************************************/
// Color information
/***********************************************************************/
// Color space value
data->color = psd_stream_get_space_color(context);
// Anti alias on/off
data->anti_alias = psd_stream_get_bool(context);
return psd_status_done;
}
static psd_status psd_get_path_record(psd_context * context, psd_path * path, psd_int length)
{
psd_int i, records, malloc_subpath;
psd_short record_type;
psd_subpath * subpaths = NULL, * cur_subpath;
psd_bezier_point * cur_bezier_point = NULL;
memset(path, 0, sizeof(psd_path));
malloc_subpath = PSD_MIN_SUBPATH_COUNT;
subpaths = (psd_subpath *)psd_malloc(sizeof(psd_subpath) * malloc_subpath);
if (subpaths == NULL)
return psd_status_malloc_failed;
// These resource blocks consist of a series of 26-byte path point records, so the resource
// length should always be a multiple of 26.
records = length / 26;
for (i = 0; i < records; i ++)
{
record_type = psd_stream_get_short(context);
switch(record_type)
{
case 0: // Closed subpath length record
case 3: // Open subpath length record
if (path->number_of_subpaths >= malloc_subpath)
{
malloc_subpath *= 2;
subpaths = (psd_subpath *)psd_realloc(subpaths, sizeof(psd_subpath) * malloc_subpath);
if (subpaths == NULL)
return psd_status_malloc_failed;
}
cur_subpath = &subpaths[path->number_of_subpaths];
path->number_of_subpaths ++;
// contain the number of Bezier knot records in bytes 2 and 3
cur_subpath->number_of_points = psd_stream_get_short(context);
cur_subpath->closed = (record_type == 0 ? psd_true : psd_false);
cur_subpath->bezier_points = (psd_bezier_point *)psd_malloc(sizeof(psd_bezier_point) * cur_subpath->number_of_points);
if (cur_subpath->bezier_points == NULL)
return psd_status_malloc_failed;
memset(cur_subpath->bezier_points, 0, sizeof(psd_bezier_point) * cur_subpath->number_of_points);
cur_bezier_point = cur_subpath->bezier_points;
// remains 22 byets
psd_stream_get_null(context, 22);
break;
case 1: // Closed subpath Bezier knot, linked
case 2: // Closed subpath Bezier knot, unlinked
case 4: // Open subpath Bezier knot, linked
case 5: // Open subpath Bezier knot, unlinked
if (record_type == 1 || record_type == 4)
cur_bezier_point->linked = psd_true;
else
cur_bezier_point->linked = psd_false;
// the control point for the Bezier segment preceding the knot
cur_bezier_point->preceding_control_vertical = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
cur_bezier_point->preceding_control_horizontal = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
// the anchor point for the knot
cur_bezier_point->anchor_point_vertical = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
cur_bezier_point->anchor_point_horizontal = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
// the control point for the Bezier segment leaving the knot
cur_bezier_point->leaving_control_vertical = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
cur_bezier_point->leaving_control_horizontal = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
// get the next
cur_bezier_point ++;
break;
case 6: // Path fill rule record
// The remaining 24 bytes of the first record are zeroes.
psd_stream_get_null(context, 24);
break;
case 7: // Clipboard record
// contain four fixed-point numbers for the bounding rectangle (top, left, bottom, right)
path->clipboard_top = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
path->clipboard_left = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
path->clipboard_bottom = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
path->clipboard_right = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
// a single fixed-point number indicating the resolution
path->resolution = psd_fixed_8_24_tofloat(psd_stream_get_int(context));
// remains 4 byets
psd_stream_get_null(context, 4);
break;
case 8: // Initial fill rule record
// contain one two byte record. A value of 1 means that
// the fill starts with all pixels.
path->initial_fill = (psd_bool)psd_stream_get_short(context);
// remains 22 byets
psd_stream_get_null(context, 22);
break;
default:
psd_stream_get_null(context, 24);
psd_assert(0);
break;
}
}
path->subpaths = subpaths;
return psd_status_done;
}
psd_status psd_get_layer_pattern_overlay2(psd_context * context, psd_layer_effects_pattern_overlay * pattern_overlay)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_pattern_overlay_default(pattern_overlay);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
case 0:
if(strcmp(keychar, "phase") == 0)
{
psd_assert(type == 'Objc');
psd_stream_get_object_point(&pattern_overlay->horz_phase,
&pattern_overlay->vert_phase, context);
// problem, why ???
pattern_overlay->horz_phase = 0;
pattern_overlay->vert_phase = 0;
}
else
{
psd_assert(0);
psd_stream_get_object_null(type, context);
}
break;
// effect enable
case 'enab':
psd_assert(type == 'bool');
pattern_overlay->effect_enable = psd_stream_get_bool(context);
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// Gradient Type
psd_assert(key == 'BlnM');
pattern_overlay->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
pattern_overlay->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// pattern
case 'Ptrn':
psd_assert(type == 'Objc');
psd_stream_get_object_pattern_info(&pattern_overlay->pattern_info, context);
break;
// scale
case 'Scl ':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
pattern_overlay->scale = (psd_int)psd_stream_get_double(context);
break;
// link with layer
case 'Algn':
psd_assert(type == 'bool');
pattern_overlay->link_with_layer = psd_stream_get_bool(context);
break;
default:
psd_assert(0);
psd_stream_get_object_null(type, context);
break;
}
}
return psd_status_done;
}
// shows the high-level organization of the layer information.
psd_static psd_status psd_get_layer_info(psd_context * context)
{
psd_int length, extra_length, i, j, size;
psd_int prev_stream_pos, prev_layer_stream_pos, extra_stream_pos;
psd_bool skip_first_alpha = psd_false;
psd_layer_record * layer, * group_layer;
psd_uchar flags;
psd_uint tag;
psd_status status = psd_status_done;
// Length of the layers info section. (**PSB** length is 8 bytes.)
length = psd_stream_get_int(context);
// rounded up to a multiple of 2
if(length & 0x01)
length ++;
if(length <= 0)
return psd_status_done;
prev_layer_stream_pos = context->stream.current_pos;
// Layer count.
context->layer_count = psd_stream_get_short(context);
// If it is a negative number, its absolute value is the number of
// layers and the first alpha channel contains the transparency data for the
// merged result.
if(context->layer_count < 0)
{
skip_first_alpha = psd_true;
context->layer_count = -context->layer_count;
}
psd_assert(context->layer_count > 0);
context->layer_records = (psd_layer_record *)psd_malloc(context->layer_count * sizeof(psd_layer_record));
if(context->layer_records == NULL)
return psd_status_malloc_failed;
memset(context->layer_records, 0, context->layer_count * sizeof(psd_layer_record));
for(i = 0, layer = context->layer_records; i < context->layer_count; i ++, layer ++)
{
// INFORMATION ABOUT EACH LAYER
// value as default
layer->layer_type = psd_layer_type_normal;
layer->blend_mode = psd_blend_mode_normal;
layer->opacity = 255;
layer->fill_opacity = 255;
layer->blend_clipped = psd_true;
layer->blend_interior = psd_false;
layer->knockout = 0;
layer->transparency_shapes_layer = psd_true;
layer->layer_mask_hides_effects = psd_false;
layer->vector_mask_hides_effects = psd_false;
layer->divider_blend_mode = psd_blend_mode_pass_through;
layer->layer_mask_info.default_color = 255;
layer->layer_mask_info.disabled = psd_true;
// Rectangle containing the contents of the layer. Specified as top, left,
// bottom, right coordinates
layer->top = psd_stream_get_int(context);
layer->left = psd_stream_get_int(context);
layer->bottom = psd_stream_get_int(context);
layer->right = psd_stream_get_int(context);
layer->width = layer->right - layer->left;
layer->height = layer->bottom - layer->top;
// the size of layer size is 0.
//psd_assert(layer->width > 0 && layer->height > 0);
// Number of channels in the layer
layer->number_of_channels = psd_stream_get_short(context);
psd_assert(layer->number_of_channels > 0);
layer->channel_info = (psd_channel_info *)psd_malloc(layer->number_of_channels * sizeof(psd_channel_info));
if(layer->channel_info == NULL)
{
psd_layer_free(layer);
return psd_status_malloc_failed;
}
// Channel information. Six bytes per channel, consisting of:
// 2 bytes for Channel ID: 0 = red, 1 = green, etc.;
// ¨C1 = transparency mask; ¨C2 = user supplied layer mask
// 4 bytes for length of corresponding channel data. (**PSB** 8 bytes for
// length of corresponding channel data.)
for(j = 0; j < layer->number_of_channels; j ++)
{
layer->channel_info[j].channel_id = psd_stream_get_short(context);
layer->channel_info[j].data_length = psd_stream_get_int(context);
layer->channel_info[j].restricted = psd_false;
}
// Blend mode signature: '8BIM'
tag = psd_stream_get_int(context);
if(tag != '8BIM')
{
psd_layer_free(layer);
return psd_status_blend_mode_signature_error;
}
// Blend mode key
layer->blend_mode = psd_stream_get_blend_mode(context);
// Opacity. 0 = transparent ... 255 = opaque
layer->opacity = psd_stream_get_char(context);
// Clipping: 0 = base, 1 = non¨Cbase
layer->clipping = psd_stream_get_bool(context);
// Flags
flags = psd_stream_get_char(context);
// bit 0 = transparency protected
layer->transparency_protected = flags & 0x01;
// bit 1 = visible
layer->visible = (flags & (0x01 << 1)) > 0;
layer->visible = psd_true - layer->visible;
// bit 2 = obsolete
layer->obsolete = (flags & (0x01 << 2)) > 0;
// bit 3 = 1 for Photoshop 5.0 and later, tells if bit 4 has useful information
if((flags & (0x01 << 3)) > 0)
{
// bit 4 = pixel data irrelevant to appearance of document
layer->pixel_data_irrelevant = (flags & (0x01 << 4)) > 0;
}
// Filler (zero)
flags = psd_stream_get_char(context);
psd_assert(flags == 0);
// Length of the extra data field ( = the total length of the next five fields).
extra_length = psd_stream_get_int(context);
extra_stream_pos = context->stream.current_pos;
psd_assert(extra_length > 0);
// LAYER MASK / ADJUSTMENT LAYER DATA
// Size of the data: 36, 20, or 0. If zero, the following fields are not present
size = psd_stream_get_int(context);
psd_assert(size == 36 || size == 20 || size == 0);
if(size > 0)
{
// Rectangle enclosing layer mask: Top, left, bottom, right
layer->layer_mask_info.top = psd_stream_get_int(context);
layer->layer_mask_info.left = psd_stream_get_int(context);
layer->layer_mask_info.bottom = psd_stream_get_int(context);
layer->layer_mask_info.right = psd_stream_get_int(context);
layer->layer_mask_info.width = layer->layer_mask_info.right - layer->layer_mask_info.left;
layer->layer_mask_info.height = layer->layer_mask_info.bottom - layer->layer_mask_info.top;
// Default color. 0 or 255
layer->layer_mask_info.default_color = psd_stream_get_char(context);
psd_assert(layer->layer_mask_info.default_color == 0 ||
layer->layer_mask_info.default_color == 255);
// Flags
flags = psd_stream_get_char(context);
// bit 0 = position relative to layer
layer->layer_mask_info.relative = flags & 0x01;
// bit 1 = layer mask disabled
layer->layer_mask_info.disabled = (flags & (0x01 << 1)) > 0;
// bit 2 = invert layer mask when blending
layer->layer_mask_info.invert = (flags & (0x01 << 2)) > 0;
if(size == 20)
{
// Padding. Only present if size = 20. Otherwise the following is present
psd_stream_get_short(context);
}
else
{
// Real Flags. Same as Flags information above.
flags = psd_stream_get_char(context);
// bit 0 = position relative to layer
layer->layer_mask_info.relative = flags & 0x01;
// bit 1 = layer mask disabled
layer->layer_mask_info.disabled = (flags & (0x01 << 1)) > 0;
// bit 2 = invert layer mask when blending
layer->layer_mask_info.invert = (flags & (0x01 << 2)) > 0;
// Real user mask background. 0 or 255. Same as Flags information above.
layer->layer_mask_info.default_color = psd_stream_get_char(context);
psd_assert(layer->layer_mask_info.default_color == 0 ||
layer->layer_mask_info.default_color == 255);
// Rectangle enclosing layer mask: Top, left, bottom, right.
layer->layer_mask_info.top = psd_stream_get_int(context);
layer->layer_mask_info.left = psd_stream_get_int(context);
layer->layer_mask_info.bottom = psd_stream_get_int(context);
layer->layer_mask_info.right = psd_stream_get_int(context);
layer->layer_mask_info.width = layer->layer_mask_info.right - layer->layer_mask_info.left;
layer->layer_mask_info.height = layer->layer_mask_info.bottom - layer->layer_mask_info.top;
}
}
// LAYER BLENDING RANGES DATA
// Length of layer blending ranges data
size = psd_stream_get_int(context);
// Composite gray blend source. Contains 2 black values followed by 2
// white values. Present but irrelevant for Lab & Grayscale.
layer->layer_blending_ranges.gray_black_src = psd_stream_get_short(context);
layer->layer_blending_ranges.gray_white_src = psd_stream_get_short(context);
// Composite gray blend destination range
layer->layer_blending_ranges.gray_black_dst = psd_stream_get_short(context);
layer->layer_blending_ranges.gray_white_dst = psd_stream_get_short(context);
layer->layer_blending_ranges.number_of_blending_channels = (size - 8) / 8;
if (layer->layer_blending_ranges.number_of_blending_channels <= 0)
{
psd_layer_free(layer);
return psd_status_invalid_blending_channels;
}
layer->layer_blending_ranges.channel_black_src = (psd_ushort *)psd_malloc(layer->layer_blending_ranges.number_of_blending_channels * 2);
layer->layer_blending_ranges.channel_white_src = (psd_ushort *)psd_malloc(layer->layer_blending_ranges.number_of_blending_channels * 2);
layer->layer_blending_ranges.channel_black_dst = (psd_ushort *)psd_malloc(layer->layer_blending_ranges.number_of_blending_channels * 2);
layer->layer_blending_ranges.channel_white_dst = (psd_ushort *)psd_malloc(layer->layer_blending_ranges.number_of_blending_channels * 2);
if(layer->layer_blending_ranges.channel_black_src == NULL ||
layer->layer_blending_ranges.channel_white_src == NULL ||
layer->layer_blending_ranges.channel_black_dst == NULL ||
layer->layer_blending_ranges.channel_white_dst == NULL)
{
psd_layer_free(layer);
return psd_status_malloc_failed;
}
for(j = 0; j < layer->layer_blending_ranges.number_of_blending_channels; j ++)
{
// channel source range
layer->layer_blending_ranges.channel_black_src[j] = psd_stream_get_short(context);
layer->layer_blending_ranges.channel_white_src[j] = psd_stream_get_short(context);
// channel destination range
layer->layer_blending_ranges.channel_black_dst[j] = psd_stream_get_short(context);
layer->layer_blending_ranges.channel_white_dst[j] = psd_stream_get_short(context);
}
// Layer name: Pascal string, padded to a multiple of 4 bytes.
size = psd_stream_get_char(context);
size = ((size + 1 + 3) & ~0x03) - 1;
psd_stream_get(context, layer->layer_name, size);
while(context->stream.current_pos - extra_stream_pos < extra_length)
{
// ADDITIONAL LAYER INFORMATION
// Signature
tag = psd_stream_get_int(context);
if(tag != '8BIM')
return psd_status_layer_information_signature_error;
// Key: a 4-character code
tag = psd_stream_get_int(context);
// Length data below, rounded up to an even byte count.
// (**PSB**, the following keys have a length count of 8 bytes: LMsk, Lr16,
// Layr, Mt16, Mtrn, Alph.
size = psd_stream_get_int(context);
size = (size + 1) & ~0x01;
prev_stream_pos = context->stream.current_pos;
// Adjustment layer
// Adjustment layers can have one of the following keys
status = psd_status_done;
switch(tag)
{
case 'levl':
status = psd_get_layer_levels(context, layer, size);
break;
case 'curv':
status = psd_get_layer_curves(context, layer, size);
break;
case 'brit':
status = psd_get_layer_brightness_contrast(context, layer);
break;
case 'blnc':
status = psd_get_layer_color_balance(context, layer);
break;
//case 'hue ':
// Old Hue/saturation, Photoshop 4.0
//break;
case 'hue2':
status = psd_get_layer_hue_saturation(context, layer);
break;
case 'selc':
status = psd_get_layer_selective_color(context, layer);
break;
case 'thrs':
status = psd_get_layer_threshold(context, layer);
break;
case 'nvrt':
status = psd_get_layer_invert(context, layer);
break;
case 'post':
status = psd_get_layer_posterize(context, layer);
break;
case 'mixr':
status = psd_get_layer_channel_mixer(context, layer);
break;
case 'grdm':
status = psd_get_layer_gradient_map(context, layer);
break;
case 'phfl':
status = psd_get_layer_photo_filter(context, layer);
break;
case 'lrFX':
status = psd_get_layer_effects(context, layer);
break;
case 'lfx2':
status = psd_get_layer_effects2(context,layer);
break;
case 'tySh':
status = psd_get_layer_type_tool(context, layer);
break;
//case 'TySh':
// Type tool object setting (Photoshop 6.0)
//break;
case 'SoCo':
status = psd_get_layer_solid_color(context, layer);
break;
case 'GdFl':
status = psd_get_layer_gradient_fill(context, layer);
break;
case 'PtFl':
status = psd_get_layer_pattern_fill(context, layer);
break;
case 'luni':
status = psd_get_layer_unicode_name(context, layer);
break;
case 'lnsr':
status = psd_get_layer_name_id(context, layer);
break;
case 'lyid':
status = psd_get_layer_id(context, layer);
break;
case 'clbl':
status = psd_get_layer_blend_clipped(context, layer);
break;
case 'infx':
status = psd_get_layer_blend_interior(context, layer);
break;
case 'knko':
status = psd_get_layer_knockout(context, layer);
break;
case 'lspf':
status = psd_get_layer_protected(context, layer);
break;
case 'lclr':
status = psd_get_layer_sheet_color(context, layer);
break;
case 'fxrp':
status = psd_get_layer_reference_point(context, layer);
break;
case 'lyvr':
status = psd_get_layer_version(context, layer);
break;
case 'tsly':
status = psd_get_layer_transparency_shapes_layer(context, layer);
break;
case 'lmgm':
status = psd_get_layer_layer_mask_hides_effects(context, layer);
break;
case 'vmgm':
status = psd_get_layer_vector_mask_hides_effects(context, layer);
break;
case 'iOpa':
status = psd_get_layer_fill_opacity(context, layer);
break;
case 'lsct':
status = psd_get_layer_section_divider(context, layer, size);
break;
case 'brst':
status = psd_get_layer_channel_blending_restrictions(context, layer, size);
break;
#ifdef PSD_GET_PATH_RESOURCE
case 'vmsk':
status = psd_get_layer_vector_mask(context, layer, size);
break;
#endif
default:
psd_stream_get_null(context, size);
break;
}
if(status != psd_status_done)
{
psd_layer_free(layer);
return status;
}
// Filler
psd_stream_get_null(context, prev_stream_pos + size - context->stream.current_pos);
psd_assert(layer->layer_info_count < psd_layer_info_type_count);
}
psd_assert(context->stream.current_pos - extra_stream_pos == extra_length);
}
for(i = 0, layer = context->layer_records; i < context->layer_count; i ++, layer ++)
{
// Channel image data. Contains one or more image data records for each layer.
status = psd_get_layer_channel_image_data(context, layer);
if(status != psd_status_done)
{
psd_layer_free(layer);
return status;
}
}
// Filler: zeros
psd_stream_get_null(context, prev_layer_stream_pos + length - context->stream.current_pos);
// group layer
for(i = context->layer_count - 1, group_layer = NULL; i >= 0; i --)
{
layer = &context->layer_records[i];
switch(layer->layer_type)
{
case psd_layer_type_normal:
layer->group_layer = group_layer;
break;
case psd_layer_type_folder:
group_layer = layer;
break;
case psd_layer_type_hidden:
group_layer = NULL;
break;
}
}
return psd_status_done;
}
psd_status psd_layer_effects_blend_gradient_overlay(psd_context * context, psd_layer_record * layer, psd_layer_effects * data)
{
psd_layer_effects_gradient_overlay * gradient_overlay = &data->gradient_overlay;
psd_bitmap src_bmp, dst_bmp;
psd_layer_mask_info layer_mask_info;
psd_int width, height, center_x, center_y, radius_x, radius_y, radius_corner;
psd_int corner_angle, angle;
psd_int sign_x = 1, sign_y = 1;
data->left[psd_layer_effects_type_gradient_overlay] = 0;
data->top[psd_layer_effects_type_gradient_overlay] = 0;
data->right[psd_layer_effects_type_gradient_overlay] = layer->width;
data->bottom[psd_layer_effects_type_gradient_overlay] = layer->height;
data->blend_mode[psd_layer_effects_type_gradient_overlay] = gradient_overlay->blend_mode;
data->opacity[psd_layer_effects_type_gradient_overlay] = gradient_overlay->opacity;
data->width[psd_layer_effects_type_gradient_overlay] = layer->width;
data->height[psd_layer_effects_type_gradient_overlay] = layer->height;
if(data->image_data[psd_layer_effects_type_gradient_overlay] == NULL)
{
data->image_data[psd_layer_effects_type_gradient_overlay] = (psd_argb_color *)psd_malloc(layer->width * layer->height * 4);
if(data->image_data[psd_layer_effects_type_gradient_overlay] == NULL)
return psd_status_malloc_failed;
}
src_bmp.width = layer->width;
src_bmp.height = layer->height;
src_bmp.image_data = layer->image_data;
dst_bmp.width = layer->width;
dst_bmp.height = layer->height;
dst_bmp.image_data = data->image_data[psd_layer_effects_type_gradient_overlay];
if(gradient_overlay->align_width_layer == psd_false)
{
center_x = context->width / 2 + gradient_overlay->horz_offset * context->width / 100;
center_y = context->height / 2 + gradient_overlay->vert_offset * context->height / 100;
center_x -= layer->left;
center_y -= layer->top;
corner_angle = (psd_int)(atan((psd_float)context->height / context->width) * 180 / PSD_PI + 0.5);
angle = gradient_overlay->angle;
width = (context->width * gradient_overlay->scale + 100) / 200;
height = (context->height * gradient_overlay->scale + 100) / 200;
}
else
{
center_x = layer->width / 2 + gradient_overlay->horz_offset * layer->width / 100;
center_y = layer->height / 2 + gradient_overlay->vert_offset * layer->height / 100;
corner_angle = (psd_int)(atan((psd_float)layer->height / layer->width) * 180 / PSD_PI + 0.5);
angle = gradient_overlay->angle;
width = (layer->width * gradient_overlay->scale + 100) / 200;
height = (layer->height * gradient_overlay->scale + 100) / 200;
}
if(angle < 0)
angle += 360;
if(angle >= 90 && angle < 180)
{
angle = 180 - angle;
sign_x = -1;
}
else if(angle >= 180 && angle < 270)
{
angle = angle - 180;
sign_x = -1;
sign_y = -1;
}
else if(angle >= 270 && angle <= 360)
{
angle = 360 - angle;
sign_y = -1;
}
if(angle <= corner_angle)
{
radius_x = width;
radius_y = (psd_int)(radius_x * PSD_TAN(angle) + 0.5);
}
else
{
radius_y = height;
radius_x = (psd_int)(radius_y / PSD_TAN(angle) + 0.5);
}
radius_corner = (psd_int)(psd_carm_sqrt((psd_float)(radius_x * radius_x + radius_y * radius_y)) + 0.5);
switch(gradient_overlay->style)
{
case psd_gradient_style_linear:
psd_gradient_fill_linear(&dst_bmp, &gradient_overlay->gradient_color, gradient_overlay->reverse,
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
break;
case psd_gradient_style_radial:
psd_gradient_fill_radial(&dst_bmp, &gradient_overlay->gradient_color, gradient_overlay->reverse,
center_x, center_y, radius_corner);
break;
case psd_gradient_style_angle:
psd_gradient_fill_angle(&dst_bmp, &gradient_overlay->gradient_color, gradient_overlay->reverse,
center_x, center_y, gradient_overlay->angle);
break;
case psd_gradient_style_reflected:
psd_gradient_fill_reflected(&dst_bmp, &gradient_overlay->gradient_color, gradient_overlay->reverse,
center_x - sign_x * radius_x, center_y + sign_y * radius_y,
center_x + sign_x * radius_x, center_y - sign_y * radius_y);
break;
case psd_gradient_style_diamond:
psd_gradient_fill_diamond(&dst_bmp, &gradient_overlay->gradient_color, gradient_overlay->reverse,
center_x, center_y, radius_corner, gradient_overlay->angle);
break;
default:
psd_assert(0);
break;
}
psd_bitmap_mix_alpha_channel(&dst_bmp, &src_bmp);
memcpy(&layer_mask_info, &layer->layer_mask_info, sizeof(psd_layer_mask_info));
if(layer_mask_info.disabled == psd_false && (layer_mask_info.default_color != 255 || layer_mask_info.mask_data != NULL))
{
layer_mask_info.left -= layer->left;
layer_mask_info.top -= layer->top;
layer_mask_info.right -= layer->left;
layer_mask_info.bottom -= layer->top;
psd_bitmap_blend_mask(&dst_bmp, &layer_mask_info);
}
data->valid[psd_layer_effects_type_gradient_overlay] = psd_false;
return psd_status_done;
}
psd_status psd_get_layer_stroke2(psd_context * context, psd_layer_effects_stroke * stroke)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_stroke_default(stroke);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
case 0:
if(strcmp(keychar, "phase") == 0)
{
psd_assert(type == 'Objc');
psd_stream_get_object_point(&stroke->pattern_horz_phase,
&stroke->pattern_vert_phase, context);
stroke->pattern_horz_phase = 0;
stroke->pattern_vert_phase = 0;
}
else
{
psd_assert(0);
psd_stream_get_object_null(type, context);
}
break;
// effect enable
case 'enab':
psd_assert(type == 'bool');
stroke->effect_enable = psd_stream_get_bool(context);
break;
// position
case 'Styl':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// fill style
psd_assert(key == 'FStl');
length = psd_stream_get_int(context);
if(length == 0)
key = psd_stream_get_int(context);
else
{
key = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
switch(key)
{
case 'OutF':
stroke->position = psd_stroke_outside;
break;
case 'InsF':
stroke->position = psd_stroke_inside;
break;
case 'CtrF':
stroke->position = psd_stroke_center;
break;
default:
psd_assert(0);
break;
}
break;
// fill type
case 'PntT':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// fill style
psd_assert(key == 'FrFl');
length = psd_stream_get_int(context);
if(length == 0)
key = psd_stream_get_int(context);
else
{
key = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
switch(key)
{
case 'SClr':
stroke->fill_type = psd_fill_solid_color;
break;
case 'GrFl':
stroke->fill_type = psd_fill_gradient;
break;
case 'Ptrn':
stroke->fill_type = psd_fill_pattern;
break;
default:
psd_assert(0);
break;
}
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// blend mode
psd_assert(key == 'BlnM');
stroke->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
stroke->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// size
case 'Sz ':
psd_assert(type == 'UntF');
// pixels: tagged unit value
key = psd_stream_get_int(context);
psd_assert(key == '#Pxl');
stroke->size = (psd_int)psd_stream_get_double(context);
break;
// color
case 'Clr ':
// Descriptor
psd_assert(type == 'Objc');
stroke->fill_color = psd_stream_get_object_color(context);
break;
// gradient color
case 'Grad':
// Descriptor
psd_assert(type == 'Objc');
psd_stream_get_object_gradient_color(&stroke->gradient_color, context);
break;
case 'Angl': // angle
// Unit psd_float
psd_assert(type == 'UntF');
// '#Ang' = angle: base degrees
key = psd_stream_get_int(context);
psd_assert(key == '#Ang');
// Actual value (double)
stroke->gradient_angle = (psd_int)psd_stream_get_double(context);
break;
case 'Type': // gradient style
// Enumerated
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// Gradient Type
psd_assert(key == 'GrdT');
stroke->gradient_style = psd_stream_get_object_gradient_style(context);
break;
case 'Rvrs': // reverse
// boolean
psd_assert(type == 'bool');
stroke->gradient_reverse = psd_stream_get_bool(context);
break;
case 'Scl ': // scale
// Unit psd_float
psd_assert(type == 'UntF');
// '#Prc' = percent:
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
if(stroke->fill_type == psd_fill_gradient)
stroke->gradient_scale = (psd_int)psd_stream_get_double(context);
else if(stroke->fill_type == psd_fill_pattern)
stroke->pattern_scale = (psd_int)psd_stream_get_double(context);
break;
case 'Algn': // align with layer
// boolean
psd_assert(type == 'bool');
stroke->gradient_align = psd_stream_get_bool(context);
break;
// offset, not documented
case 'Ofst':
psd_assert(type == 'Objc');
psd_stream_get_object_point(&stroke->gradient_horz_offset,
&stroke->gradient_vert_offset, context);
break;
// pattern
case 'Ptrn':
psd_assert(type == 'Objc');
psd_stream_get_object_pattern_info(&stroke->pattern_info, context);
break;
// link with layer
case 'Lnkd':
psd_assert(type == 'bool');
stroke->pattern_link = psd_stream_get_bool(context);
break;
default:
psd_assert(0);
psd_stream_get_object_null(type, context);
break;
}
}
return psd_status_done;
}
psd_status psd_get_layer_gradient_overlay2(psd_context * context, psd_layer_effects_gradient_overlay * gradient_overlay)
{
psd_int length, number_items;
psd_uint rootkey, type, key;
psd_uchar keychar[256];
psd_set_layer_gradient_overlay_default(gradient_overlay);
// Unicode string: name from classID
length = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, length);
// classID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte classID
length = psd_stream_get_int(context);
if(length == 0)
psd_stream_get_int(context);
else
psd_stream_get_null(context, length);
// Number of items in descriptor
number_items = psd_stream_get_int(context);
while(number_items --)
{
length = psd_stream_get_int(context);
psd_assert(length == 0);
if(length == 0)
rootkey = psd_stream_get_int(context);
else
{
rootkey = 0;
psd_stream_get(context, keychar, length);
keychar[length] = 0;
}
// Type: OSType key
type = psd_stream_get_int(context);
switch(rootkey)
{
// effect enable
case 'enab':
psd_assert(type == 'bool');
gradient_overlay->effect_enable = psd_stream_get_bool(context);
break;
// blend mode
case 'Md ':
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// blend mode
psd_assert(key == 'BlnM');
gradient_overlay->blend_mode = psd_stream_get_object_blend_mode(context);
break;
// opacity
case 'Opct':
psd_assert(type == 'UntF');
// percent
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
gradient_overlay->opacity = (psd_int)(psd_stream_get_double(context) * 2.55 + 0.5);
break;
// gradient color
case 'Grad':
// Descriptor
psd_assert(type == 'Objc');
psd_stream_get_object_gradient_color(&gradient_overlay->gradient_color, context);
break;
case 'Angl': // angle
// Unit psd_float
psd_assert(type == 'UntF');
// '#Ang' = angle: base degrees
key = psd_stream_get_int(context);
psd_assert(key == '#Ang');
// Actual value (double)
gradient_overlay->angle = (psd_int)psd_stream_get_double(context);
break;
case 'Type': // gradient style
// Enumerated
psd_assert(type == 'enum');
// TypeID: 4 bytes (length), followed either by string or (if length is zero) 4-
// byte typeID
length = psd_stream_get_int(context);
psd_assert(length == 0);
key = psd_stream_get_int(context);
// Gradient Type
psd_assert(key == 'GrdT');
gradient_overlay->style = psd_stream_get_object_gradient_style(context);
break;
case 'Rvrs': // reverse
// boolean
psd_assert(type == 'bool');
gradient_overlay->reverse = psd_stream_get_bool(context);
break;
case 'Algn': // align with layer
// boolean
psd_assert(type == 'bool');
gradient_overlay->align_width_layer = psd_stream_get_bool(context);
break;
case 'Scl ': // scale
// Unit psd_float
psd_assert(type == 'UntF');
// '#Prc' = percent:
key = psd_stream_get_int(context);
psd_assert(key == '#Prc');
// Actual value (double)
gradient_overlay->scale = (psd_int)psd_stream_get_double(context);
break;
// offset, not documented
case 'Ofst':
psd_assert(type == 'Objc');
psd_stream_get_object_point(&gradient_overlay->horz_offset,
&gradient_overlay->vert_offset, context);
break;
default:
psd_assert(0);
psd_stream_get_object_null(type, context);
break;
}
}
return psd_status_done;
}
psd_status psd_get_image_resource(psd_context * context)
{
psd_int length, i, size;
psd_ushort ID;
psd_uint tag;
psd_uchar sizeofname;
psd_int sizeofdata, prev_stream_pos;
psd_uchar * buffer;
//psd_status status;
// Length of image resource section
length = psd_stream_get_int(context);
if(length <= 0)
return psd_status_done;
// default
context->global_angle = 30;
context->global_altitude = 30;
while(length > 0)
{
// Signature: '8BIM'
tag = psd_stream_get_int(context);
if(tag == '8BIM')
{
length -= 4;
// Unique identifier for the resource
ID = psd_stream_get_short(context);
length -= 2;
// Name: Pascal string, padded to make the size even (a null name consists of two bytes of 0)
sizeofname = psd_stream_get_char(context);
if((sizeofname & 0x01) == 0)
sizeofname ++;
psd_stream_get_null(context, sizeofname);
length -= sizeofname + 1;
// Actual size of resource data that follows
sizeofdata = psd_stream_get_int(context);
length -= 4;
// resource data must be even
if(sizeofdata & 0x01)
sizeofdata ++;
length -= sizeofdata;
switch(context->load_tag)
{
case psd_load_tag_thumbnail:
if(ID != 1033 && ID != 1036)
{
psd_stream_get_null(context, sizeofdata);
continue;
}
break;
case psd_load_tag_merged:
// alpha channels information
if(ID != 1006 && ID != 1045 && ID != 1053)
{
psd_stream_get_null(context, sizeofdata);
continue;
}
break;
case psd_load_tag_exif:
if(ID != 1058 && ID != 1059)
{
psd_stream_get_null(context, sizeofdata);
continue;
}
break;
}
prev_stream_pos = context->stream.current_pos;
if(sizeofdata > 0)
{
switch(ID)
{
// ResolutionInfo structure
case 1005:
// Horizontal resolution in pixels per inch.
context->resolution_info.hres = psd_stream_get_int(context) / 65536.0f;
// 1=display horitzontal resolution in pixels per inch; 2=display horitzontal resolution in pixels per cm.
context->resolution_info.hres_unit = psd_stream_get_short(context);
// Display width as 1=inches; 2=cm; 3=points; 4=picas; 5=columns.
context->resolution_info.width_unit = psd_stream_get_short(context);
// Vertial resolution in pixels per inch.
context->resolution_info.vres = psd_stream_get_int(context) / 65536.0f;
// 1=display vertical resolution in pixels per inch; 2=display vertical resolution in pixels per cm.
context->resolution_info.vres_unit = psd_stream_get_short(context);
// Display height as 1=inches; 2=cm; 3=points; 4=picas; 5=columns.
context->resolution_info.height_unit = psd_stream_get_short(context);
context->fill_resolution_info = psd_true;
break;
// Names of the alpha channels as a series of Pascal strings.
case 1006:
buffer = (psd_uchar *)psd_malloc(sizeofdata);
if(buffer == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, buffer, sizeofdata);
if(context->alpha_channels == 0)
{
size = 0;
// maybe odd
while(size + 1 < sizeofdata)
{
size += *(buffer + size) + 1;
context->alpha_channels ++;
}
context->color_channels = context->channels - context->alpha_channels;
context->alpha_channel_info = (psd_alpha_channel_info *)psd_malloc(context->alpha_channels * sizeof(psd_alpha_channel_info));
if(context->alpha_channel_info == NULL)
{
psd_free(buffer);
return psd_status_malloc_failed;
}
memset(context->alpha_channel_info, 0, context->alpha_channels * sizeof(psd_alpha_channel_info));
}
size = 0;
for(i = 0; i < context->alpha_channels; i ++)
{
memcpy(context->alpha_channel_info[i].name, buffer + size + 1, *(buffer + size));
size += *(buffer + size) + 1;
}
psd_free(buffer);
context->fill_alpha_channel_info = psd_true;
break;
// DisplayInfo structure
case 1007:
context->display_info.color = psd_stream_get_space_color(context);
// 0..100
context->display_info.opacity = psd_stream_get_short(context);
psd_assert(context->display_info.opacity >= 0 && context->display_info.opacity <= 100);
// selected = 0, protected = 1
context->display_info.kind = psd_stream_get_char(context);
// maybe be 2 when color mode is multichannel
//psd_assert(context->display_info.kind == 0 || context->display_info.kind == 1);
// padding
psd_stream_get_char(context);
context->fill_display_info = psd_true;
break;
// The caption as a Pascal string.
case 1008:
size = psd_stream_get_char(context);
psd_stream_get(context, context->caption, size);
break;
// Layer state information
// 2 bytes containing the index of target layer (0 = bottom layer).
case 1024:
context->target_layer_index = psd_stream_get_short(context);
break;
// Layers group information
// 2 bytes per layer containing a group ID for the dragging groups. Layers in
// a group have the same group ID.
case 1026:
context->layer_group_count = sizeofdata / 2;
context->layer_group_id = (psd_ushort *)psd_malloc(context->layer_group_count * 2);
if(context->layer_group_id == NULL)
return psd_status_malloc_failed;
for(i = 0; i < context->layer_group_count; i ++)
context->layer_group_id[i] = psd_stream_get_short(context);
context->fill_layer_group = psd_true;
break;
// (Photoshop 4.0) Thumbnail resource for Photoshop 4.0 only
case 1033:
// (Photoshop 5.0) Thumbnail resource (supersedes resource 1033)
case 1036:
if(context->load_tag == psd_load_tag_layer)
{
psd_stream_get_null(context, sizeofdata);
continue;
}
// 1 = kJpegRGB . Also supports kRawRGB (0).
context->thumbnail_resource.format = psd_stream_get_int(context);
psd_assert(context->thumbnail_resource.format == 0 || context->thumbnail_resource.format == 1);
// Width of thumbnail in pixels.
context->thumbnail_resource.width = psd_stream_get_int(context);
// Height of thumbnail in pixels.
context->thumbnail_resource.height = psd_stream_get_int(context);
// Padded row bytes = (width * bits per pixel + 31) / 32 * 4.
context->thumbnail_resource.width_bytes = psd_stream_get_int(context);
// Total size = widthbytes * height * planes
context->thumbnail_resource.total_size = psd_stream_get_int(context);
// Used for consistency check.
context->thumbnail_resource.size_after_compression = psd_stream_get_int(context);
context->thumbnail_resource.bits_per_pixel = psd_stream_get_short(context);
// Bits per pixel. = 24
psd_assert(context->thumbnail_resource.bits_per_pixel == 24);
context->thumbnail_resource.number_of_planes = psd_stream_get_short(context);
// Number of planes. = 1
psd_assert(context->thumbnail_resource.number_of_planes == 1);
#ifdef PSD_INCLUDE_LIBJPEG
if(context->thumbnail_resource.format == 0)
{
status = psd_thumbnail_decode_raw(&context->thumbnail_resource.thumbnail_data,
context->thumbnail_resource.size_after_compression, context);
}
else
{
status = psd_thumbnail_decode_jpeg(&context->thumbnail_resource.thumbnail_data,
context->thumbnail_resource.size_after_compression, context);
}
if(status != psd_status_done)
return status;
#else
context->thumbnail_resource.jfif_data = (psd_uchar *)psd_malloc(sizeofdata - 28);
if(context->thumbnail_resource.jfif_data == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, context->thumbnail_resource.jfif_data, sizeofdata - 28);
#endif
context->fill_thumbnail_resource = psd_true;
break;
// (Photoshop 4.0) Copyright flag
// Boolean indicating whether image is copyrighted. Can be set via
// Property suite or by user in File Info...
case 1034:
context->copyright_flag = (psd_bool)psd_stream_get_short(context);
psd_assert(context->copyright_flag == 0 || context->copyright_flag == 1);
break;
// (Photoshop 5.0) Global Angle
// 4 bytes that contain an integer between 0 and 359, which is the global
// lighting angle for effects layer. If not present, assumed to be 30.
case 1037:
context->global_angle = psd_stream_get_int(context);
break;
// (Photoshop 5.0) Effects visible
// 1-byte global flag to show/hide all the effects layer. Only present when
// they are hidden.
case 1042:
context->effects_visible = (psd_bool)psd_stream_get_short(context);
psd_assert(context->effects_visible == 0 || context->effects_visible == 1);
break;
// (Photoshop 5.0) Unicode Alpha Names
// Unicode string (4 bytes length followed by string).
case 1045:
buffer = (psd_uchar *)psd_malloc(sizeofdata);
if(buffer == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, buffer, sizeofdata);
if(context->alpha_channels == 0)
{
size = 0;
while(size < sizeofdata)
{
size += PSD_CHAR_TO_INT(buffer + size) * 2 + 4;
context->alpha_channels ++;
}
context->color_channels = context->channels - context->alpha_channels;
context->alpha_channel_info = (psd_alpha_channel_info *)psd_malloc(context->alpha_channels * sizeof(psd_alpha_channel_info));
if(context->alpha_channel_info == NULL)
{
psd_free(buffer);
return psd_status_malloc_failed;
}
memset(context->alpha_channel_info, 0, context->alpha_channels * sizeof(psd_alpha_channel_info));
}
size = 0;
for(i = 0; i < context->alpha_channels; i ++)
{
context->alpha_channel_info[i].unicode_name_length = PSD_CHAR_TO_INT(buffer + size);
context->alpha_channel_info[i].unicode_name = (psd_ushort *)psd_malloc(2 * context->alpha_channel_info[i].unicode_name_length);
if(context->alpha_channel_info[i].unicode_name == NULL)
{
psd_free(buffer);
return psd_status_malloc_failed;
}
memcpy(context->alpha_channel_info[i].unicode_name, buffer + size + 4, 2 * context->alpha_channel_info[i].unicode_name_length);
size += 2 * context->alpha_channel_info[i].unicode_name_length + 4;
}
psd_free(buffer);
context->fill_alpha_channel_info = psd_true;
break;
// (Photoshop 6.0) Indexed Color Table Count
// 2 bytes for the number of colors in table that are actually defined
case 1046:
context->indexed_color_table_count = psd_stream_get_short(context);
break;
// (Photoshop 6.0) Transparency Index.
// 2 bytes for the index of transparent color, if any.
case 1047:
context->transparency_index = psd_stream_get_short(context);
break;
// (Photoshop 6.0) Global Altitude
// 4 byte entry for altitude
case 1049:
context->global_altitude = psd_stream_get_int(context);
break;
// (Photoshop 6.0) Alpha Identifiers
// 4 bytes of length, followed by 4 bytes each for every alpha identifier.
case 1053:
if(context->alpha_channels == 0)
{
context->alpha_channels = sizeofdata / 4;
context->color_channels = context->channels - context->alpha_channels;
context->alpha_channel_info = (psd_alpha_channel_info *)psd_malloc(context->alpha_channels * sizeof(psd_alpha_channel_info));
if(context->alpha_channel_info == NULL)
return psd_status_malloc_failed;
memset(context->alpha_channel_info, 0, context->alpha_channels * sizeof(psd_alpha_channel_info));
}
for(i = 0; i < context->alpha_channels; i ++)
{
context->alpha_channel_info[i].identifier = psd_stream_get_int(context);
}
context->fill_alpha_channel_info = psd_true;
break;
// (Photoshop 6.0) Version Info
// 4 bytes version, 1 byte hasRealMergedData, Unicode string: writer
// name, Unicode string: reader name, 4 bytes file version.
case 1057:
context->version_info.version = psd_stream_get_int(context);
context->version_info.has_real_merged_data = psd_stream_get_bool(context);
context->version_info.writer_name_length = psd_stream_get_int(context);
context->version_info.writer_name = (psd_ushort *)psd_malloc(2 * context->version_info.writer_name_length);
if(context->version_info.writer_name == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, (psd_uchar *)context->version_info.writer_name, 2 * context->version_info.writer_name_length);
context->version_info.reader_name_length = psd_stream_get_int(context);
context->version_info.reader_name = (psd_ushort *)psd_malloc(2 * context->version_info.reader_name_length);
if(context->version_info.reader_name == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, (psd_uchar *)context->version_info.reader_name, 2 * context->version_info.reader_name_length);
context->version_info.file_version = psd_stream_get_int(context);
context->fill_version_info = psd_true;
break;
// if you don't need the following image resource,
// you can undef this macro in psd_config.h to reduce the parsing time
/////////////////////////////////////////////////////////////////////////////////////////////
#ifdef PSD_GET_ALL_IMAGE_RESOURCE
// Border information
case 1009:
// a fixed number (2 bytes real, 2 bytes fraction) for the border width
context->border_info.border_width = psd_fixed_16_16_tofloat((psd_fixed_16_16)psd_stream_get_int(context));
// 2 bytes for border units (1 = inches, 2 = cm, 3 = points, 4 = picas, 5 = columns).
context->border_info.border_units = (psd_units)psd_stream_get_short(context);
psd_assert(context->border_info.border_units >= psd_units_inches &&
context->border_info.border_units <= psd_units_columns);
context->fill_border_info = psd_true;
break;
// Print flags
// A series of one-byte boolean values (see Page Setup dialog): labels, crop
// marks, color bars, registration marks, negative, flip, interpolate, caption,
// print flags.
case 1011:
context->print_flags.labels = psd_stream_get_bool(context);
context->print_flags.crop_marks = psd_stream_get_bool(context);
context->print_flags.color_bars = psd_stream_get_bool(context);
context->print_flags.registration_marks = psd_stream_get_bool(context);
context->print_flags.negative = psd_stream_get_bool(context);
context->print_flags.flip = psd_stream_get_bool(context);
context->print_flags.interpolate = psd_stream_get_bool(context);
context->print_flags.caption = psd_stream_get_bool(context);
context->print_flags.print_flags = psd_stream_get_bool(context);
context->fill_print_flags = psd_true;
break;
// (Photoshop 4.0) Grid and guides information
case 1032:
// Version ( = 1)
psd_assert(psd_stream_get_int(context) == 1);
// Future implementation of document-specific grids (4 bytes horizontal, 4 bytes vertical).
context->grid_guides.horz_grid = psd_stream_get_int(context);
context->grid_guides.vert_grid = psd_stream_get_int(context);
// Number of guide resource blocks (can be 0).
context->grid_guides.guide_count = psd_stream_get_int(context);
if(context->grid_guides.guide_count > 0)
{
//Location of guide in document coordinates. Since the guide is either vertical or horizontal, this only has to be one component of the coordinate.
context->grid_guides.guide_coordinate = (psd_int *)psd_malloc(context->grid_guides.guide_count * 4);
// Direction of guide. VHSelect is a system type of psd_uchar where 0 = vertical, 1 = horizontal.
context->grid_guides.guide_direction = (psd_uchar *)psd_malloc(context->grid_guides.guide_count);
if(context->grid_guides.guide_coordinate == NULL ||
context->grid_guides.guide_direction == NULL)
{
psd_free(context->grid_guides.guide_coordinate);
context->grid_guides.guide_coordinate = NULL;
psd_free(context->grid_guides.guide_direction);
context->grid_guides.guide_direction = NULL;
return psd_status_malloc_failed;
}
for(i = 0; i < context->grid_guides.guide_count; i ++)
{
context->grid_guides.guide_coordinate[i] = psd_stream_get_int(context);
context->grid_guides.guide_direction[i] = psd_stream_get_char(context);
}
}
context->fill_grid_and_guides_info = psd_true;
break;
// (Photoshop 5.0) Color samplers resource
case 1038:
// Version ( = 1)
psd_assert(psd_stream_get_int(context) == 1);
// Number of color samplers to follow.
context->color_samplers.number_of_color_samplers = psd_stream_get_int(context);
if (context->color_samplers.number_of_color_samplers > 0)
{
context->color_samplers.resource = (psd_color_samplers_resource *)
psd_malloc(sizeof(psd_color_samplers_resource) * context->color_samplers.number_of_color_samplers);
if (context->color_samplers.resource == NULL)
return psd_status_malloc_failed;
for (i = 0; i < context->color_samplers.number_of_color_samplers; i ++)
{
// The vertical and horizontal position of the point (4 bytes each).
context->color_samplers.resource[i].vertical_position = psd_stream_get_int(context);
context->color_samplers.resource[i].horizontal_position = psd_stream_get_int(context);
// Color Space
context->color_samplers.resource[i].color_space = psd_stream_get_short(context);
}
}
context->fill_color_samplers = psd_true;
break;
// (Photoshop 6.0) Slices
case 1050:
// Version ( = 6)
psd_assert(psd_stream_get_int(context) == 6);
// Bounding rectangle for all of the slices: top, left, bottom, right of all the slices
context->slices_resource.bounding_top = psd_stream_get_int(context);
context->slices_resource.bounding_left = psd_stream_get_int(context);
context->slices_resource.bounding_bottom = psd_stream_get_int(context);
context->slices_resource.bounding_right = psd_stream_get_int(context);
// Name of group of slices: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
// Number of slices to follow
context->slices_resource.number_of_slices = psd_stream_get_int(context);
context->slices_resource.slices_resource_block = (psd_slices_resource_block *)psd_malloc(context->slices_resource.number_of_slices * sizeof(psd_slices_resource_block));
if(context->slices_resource.slices_resource_block == NULL)
return psd_status_malloc_failed;
memset(context->slices_resource.slices_resource_block, 0, context->slices_resource.number_of_slices * sizeof(psd_slices_resource_block));
for(i = 0; i < context->slices_resource.number_of_slices; i ++)
{
context->slices_resource.slices_resource_block[i].id = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].group_id = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].origin = psd_stream_get_int(context);
// NOTE: Only present if Origin = 1
if(context->slices_resource.slices_resource_block[i].origin == 1)
context->slices_resource.slices_resource_block[i].associated_layer_id = psd_stream_get_int(context);
// Name: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
context->slices_resource.slices_resource_block[i].type = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].left = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].top = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].right = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].bottom = psd_stream_get_int(context);
// URL: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
// Target: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
// Message: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
// Alt Tag: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
context->slices_resource.slices_resource_block[i].cell_text_is_html = psd_stream_get_char(context);
// Cell text: Unicode string
size = psd_stream_get_int(context) * 2;
psd_stream_get_null(context, size);
context->slices_resource.slices_resource_block[i].horizontal_alignment = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].veritcal_alignment = psd_stream_get_int(context);
context->slices_resource.slices_resource_block[i].color = psd_argb_to_color(psd_stream_get_char(context),
psd_stream_get_char(context), psd_stream_get_char(context), psd_stream_get_char(context));
}
context->fill_slices_resource = psd_true;
break;
// (Photoshop 6.0) URL List
case 1054:
// 4 byte count of URLs
context->url_list.number_of_urls = psd_stream_get_int(context);
if (context->url_list.number_of_urls > 0)
{
context->url_list.items = (psd_url_list_item *)psd_malloc(sizeof(psd_url_list_item) *
context->url_list.number_of_urls);
if (context->url_list.items == NULL)
return psd_status_malloc_failed;
memset(context->url_list.items, 0, sizeof(psd_url_list_item) * context->url_list.number_of_urls);
}
for (i = 0; i < context->url_list.number_of_urls; i ++)
{
// followed by 4 byte long
context->url_list.items[i].tag = psd_stream_get_int(context);
// 4 byte ID
context->url_list.items[i].ID = psd_stream_get_int(context);
// Unicode string for each count.
context->url_list.items[i].name_length = psd_stream_get_int(context);
context->url_list.items[i].name = (psd_ushort *)psd_malloc(2 * context->url_list.items[i].name_length);
if (context->url_list.items[i].name == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, (psd_uchar *)context->url_list.items[i].name,
2 * context->url_list.items[i].name_length);
}
context->fill_url_list = psd_true;
break;
// (Photoshop 7.0) EXIF data 1
case 1058:
// (Photoshop 7.0) EXIF data 3
// http://www.pima.net/standards/it10/PIMA15740/exif.htm
case 1059:
// avoid to get the exif data for twice
psd_assert(context->fill_exif_data == psd_false);
# ifdef PSD_INCLUDDE_LIBEXIF
buffer = (psd_uchar *)psd_malloc(sizeofdata + sizeof(ExifHeader));
if (buffer == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, buffer + sizeof(ExifHeader), sizeofdata);
memcpy(buffer, ExifHeader, sizeof(ExifHeader));
context->exif_data = (psd_uchar *)exif_data_new_from_data(buffer, sizeofdata + sizeof(ExifHeader));
psd_free(buffer);
context->fill_exif_data = psd_true;
# else // ifdef PSD_INCLUDDE_LIBEXIF
context->exif_data = (psd_uchar *)psd_malloc(sizeofdata);
if (context->exif_data == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, context->exif_data, sizeofdata);
context->exif_data_length = sizeofdata;
context->fill_exif_data = psd_true;
# endif // ifdef PSD_INCLUDDE_LIBEXIF
break;
// (Photoshop 7.0) XMP metadata
// File info as XML description
// http://Partners.adobe.com/asn/developer/xmp/main.html
case 1060:
# ifdef PSD_INCLUDE_LIBXML
buffer = (psd_uchar *)psd_malloc(sizeofdata);
if (buffer == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, buffer, sizeofdata);
context->XMP_metadata = (psd_uchar *)xmlParseMemory(buffer, sizeofdata);
psd_free(buffer);
context->fill_XMP_metadata = psd_true;
# else // ifdef PSD_INCLUDE_LIBXML
context->XMP_metadata = (psd_uchar *)psd_malloc(sizeofdata);
if (context->XMP_metadata == NULL)
return psd_status_malloc_failed;
psd_stream_get(context, context->XMP_metadata, sizeofdata);
context->XMP_metadata_length = sizeofdata;
context->fill_XMP_metadata = psd_true;
# endif // ifdef PSD_INCLUDE_LIBXML
break;
// (Photoshop 7.0) Print scale
case 1062:
// 2 bytes style (0 = centered, 1 = size to fit, 2 = user defined).
context->print_scale.style = psd_stream_get_short(context);
psd_assert(context->print_scale.style >= psd_print_centered &&
context->print_scale.style <= psd_print_user_defined);
// 4 bytes x location (floating point).
context->print_scale.x_location = psd_stream_get_float(context);
// 4 bytes y location (floating point).
context->print_scale.y_location = psd_stream_get_float(context);
// 4 bytes scale (floating point)
context->print_scale.scale = psd_stream_get_float(context);
context->fill_print_scale = psd_true;
break;
// (Photoshop CS) Pixel Aspect Ratio
case 1064:
// 4 bytes (version = 1)
psd_assert(psd_stream_get_int(context) == 1);
// 8 bytes double, x / y of a pixel
context->pixel_aspect_ratio = psd_stream_get_double(context);
break;
// Print flags information
case 10000:
// 2 bytes version ( = 1)
psd_assert(psd_stream_get_short(context) == 1);
// 1 byte center crop marks
context->print_flags_info.center_crop = psd_stream_get_bool(context);
// 1 byte ( = 0)
psd_assert(psd_stream_get_char(context) == 0);
// 4 bytes bleed width value
context->print_flags_info.value = psd_stream_get_int(context);
// 2 bytes bleed width scale
context->print_flags_info.scale = psd_stream_get_short(context);
context->fill_print_flags_info = psd_true;
break;
#endif // ifdef PSD_GET_ALL_IMAGE_RESOURCE
/////////////////////////////////////////////////////////////////////////////////////////////
default:
#ifdef PSD_GET_PATH_RESOURCE
// Photoshop stores its paths as resources of type 8BIM, with IDs in the range 2000
// through 2998.
if(ID >= 2000 && ID <= 2998)
{
psd_get_path(context, sizeofdata);
}
// If the file contains a resource of type 8BIM with an ID of 2999, then this resource
// contains a Pascal¨Cstyle string containing the name of the clipping path to use with this
// image when saving it as an EPS file???
else if(ID == 2999)
{
// we don't find any files includes the name of the clipping path.
psd_assert(0);
}
else
#endif // ifdef PSD_GET_PATH_RESOURCE
{
psd_stream_get_null(context, sizeofdata);
}
break;
}
// Filler
psd_stream_get_null(context, prev_stream_pos + sizeofdata - context->stream.current_pos);
}
}
else
{
return psd_status_resource_signature_error;
}
}
return psd_status_done;
}