/* Copyright (C) 2001-2012 Artifex Software, Inc. All Rights Reserved. This software is provided AS-IS with no warranty, either express or implied. This software is distributed under license and may not be copied, modified or distributed except as expressly authorized under the terms of the license contained in the file LICENSE in this distribution. Refer to licensing information at http://www.artifex.com or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information. */ /* Implementation of transparency, other than rendering */ #include "math_.h" #include "memory_.h" #include "gx.h" #include "gserrors.h" #include "gstrans.h" #include "gsutil.h" #include "gzstate.h" #include "gxdevcli.h" #include "gdevdevn.h" #include "gxblend.h" #include "gdevp14.h" #include "gscspace.h" #include "gxarith.h" #include "gxclist.h" #include "gsicc_manage.h" /* ------ Transparency-related graphics state elements ------ */ int gs_setblendmode(gs_state *pgs, gs_blend_mode_t mode) { #ifdef DEBUG if (gs_debug_c('v')) { static const char *const bm_names[] = { GS_BLEND_MODE_NAMES }; dmlprintf1(pgs->memory, "[v](0x%lx)blend_mode = ", (ulong)pgs); if (mode >= 0 && mode < countof(bm_names)) dmprintf1(pgs->memory, "%s\n", bm_names[mode]); else dmprintf1(pgs->memory, "%d??\n", (int)mode); } #endif /* Map Compatible to Normal so other code treats Compatible as Normal */ /* Often BLEND_MODE_Normal is checked for optimized handling, and */ /* Compatible is now specified to be the same. */ if (mode == BLEND_MODE_Compatible) mode = BLEND_MODE_Normal; if (mode < 0 || mode > MAX_BLEND_MODE) return_error(gs_error_rangecheck); pgs->blend_mode = mode; return 0; } gs_blend_mode_t gs_currentblendmode(const gs_state *pgs) { return pgs->blend_mode; } int gs_setopacityalpha(gs_state *pgs, double alpha) { if_debug2m('v', pgs->memory, "[v](0x%lx)opacity.alpha = %g\n", (ulong)pgs, alpha); pgs->opacity.alpha = (alpha < 0.0 ? 0.0 : alpha > 1.0 ? 1.0 : alpha); return 0; } float gs_currentopacityalpha(const gs_state *pgs) { return pgs->opacity.alpha; } int gs_setshapealpha(gs_state *pgs, double alpha) { if_debug2m('v', pgs->memory, "[v](0x%lx)shape.alpha = %g\n", (ulong)pgs, alpha); pgs->shape.alpha = (alpha < 0.0 ? 0.0 : alpha > 1.0 ? 1.0 : alpha); return 0; } float gs_currentshapealpha(const gs_state *pgs) { return pgs->shape.alpha; } int gs_settextknockout(gs_state *pgs, bool knockout) { if_debug2m('v', pgs->memory, "[v](0x%lx)text_knockout = %s\n", (ulong)pgs, (knockout ? "true" : "false")); pgs->text_knockout = knockout; return 0; } bool gs_currenttextknockout(const gs_state *pgs) { return pgs->text_knockout; } /* This is used to keep pdf14 compositor actions from the interpreter from corrupting pattern renderings. For example, if the file has a softmask, the intrepter will send push and pop transparency state commands when q and Q operations are encountered. If we are writing out to a pattern clist that has no trasparency we do not want these state changes to be entered as compositor actions in the pattern clist */ static int check_for_nontrans_pattern(gs_state *pgs, unsigned char *comp_name) { gx_device * dev = pgs->device; bool is_patt_clist = gx_device_is_pattern_clist(dev); bool is_patt_acum = gx_device_is_pattern_accum(dev); /* Check if we are collecting data for a pattern that has no transparency. In that case, we need to ignore the state changes */ if (is_patt_clist || is_patt_acum) { if (is_patt_clist) { gx_device_clist_writer *clwdev = (gx_device_clist_writer*) dev; const gs_pattern1_instance_t *pinst = clwdev->pinst; if (!(pinst->templat.uses_transparency)) { if_debug1m('v', pgs->memory, "[v]%s NOT sending in pattern\n",comp_name); return(1); } } if (is_patt_acum) { gx_device_pattern_accum *padev = (gx_device_pattern_accum*) dev; const gs_pattern1_instance_t *pinst = padev->instance; if (!(pinst->templat.uses_transparency)) { if_debug1m('v', pgs->memory, "[v]%s NOT sending in pattern\n",comp_name); return(1); } } } return(0); } /* * Push a PDF 1.4 transparency compositor onto the current device. Note that * if the current device already is a PDF 1.4 transparency compositor, the * create_compositor will update its parameters but not create a new * compositor device. */ static int gs_state_update_pdf14trans(gs_state * pgs, gs_pdf14trans_params_t * pparams) { gs_imager_state * pis = (gs_imager_state *)pgs; gx_device * dev = pgs->device; gx_device *pdf14dev = NULL; int code; int curr_num = dev->color_info.num_components; /* * Send the PDF 1.4 create compositor action specified by the parameters. */ code = send_pdf14trans(pis, dev, &pdf14dev, pparams, pgs->memory); if (code < 0) return code; /* * If we created a new PDF 1.4 compositor device then we need to install it * into the graphics state. */ if (pdf14dev != dev) { gx_set_device_only(pgs, pdf14dev); } /* If we had a color space change and we are in overprint, then we need to update the drawn_comps */ if (pgs->overprint && curr_num != pdf14dev->color_info.num_components) { code = gs_do_set_overprint(pgs); } return code; } void gs_trans_group_params_init(gs_transparency_group_params_t *ptgp) { ptgp->ColorSpace = NULL; /* bogus, but can't do better */ ptgp->Isolated = false; ptgp->Knockout = false; ptgp->image_with_SMask = false; ptgp->mask_id = 0; ptgp->iccprofile = NULL; } int gs_update_trans_marking_params(gs_state * pgs) { gs_pdf14trans_params_t params = { 0 }; if_debug0m('v', pgs->memory, "[v]gs_update_trans_marking_params\n"); params.pdf14_op = PDF14_SET_BLEND_PARAMS; return gs_state_update_pdf14trans(pgs, ¶ms); } int gs_begin_transparency_group(gs_state *pgs, const gs_transparency_group_params_t *ptgp, const gs_rect *pbbox) { gs_pdf14trans_params_t params = { 0 }; const gs_color_space *blend_color_space; gs_imager_state * pis = (gs_imager_state *)pgs; cmm_profile_t *profile; if (check_for_nontrans_pattern(pgs, (unsigned char *)"gs_begin_transparency_group")) { return(0); } /* * Put parameters into a compositor parameter and then call the * create_compositor. This will pass the data to the PDF 1.4 * transparency device. */ params.pdf14_op = PDF14_BEGIN_TRANS_GROUP; params.Isolated = ptgp->Isolated; params.Knockout = ptgp->Knockout; params.image_with_SMask = ptgp->image_with_SMask; params.opacity = pgs->opacity; params.shape = pgs->shape; params.blend_mode = pgs->blend_mode; /* This function is called during the c-list writer side. Store some information so that we know what the color space is so that we can adjust according later during the clist reader. We currently will use the concrete space for any space other than a device space. However, if the device is a sep device it will blend in DeviceN color space as required. */ blend_color_space = gs_currentcolorspace_inline(pgs); if (gs_color_space_get_index(blend_color_space) > gs_color_space_index_DeviceCMYK) { /* ICC and PS CIE based case. Note that unidirectional PS CIE color spaces should not be allowed but end up occuring when processing PDF files with -dUseCIEColor. We will end up using the appropriate ICC default color space in these cases. */ blend_color_space = gs_currentcolorspace_inline(pgs); } else { blend_color_space = cs_concrete_space(blend_color_space, pis); } /* Note that if the /CS parameter was NOT present in the push of the transparency group, then we must actually inherent the previous group color space, or the color space of the target device (process color model). Here we just want to set it as a unknown type for clist writing, as we will take care of using the parent group color space later during clist reading. Also, if the group was not isolated we MUST use the parent group color space regardless of what the group color space is specified to be */ if (ptgp->ColorSpace == NULL || params.Isolated != true) { params.group_color = UNKNOWN; params.group_color_numcomps = 0; } else { /* The /CS parameter was present. Use what was set. Currently all our Device spaces are actually ICC based. The other options are if -dUseCIEColor is set, in which case it could be coming in as a PS CIE color space, which should not be allowed but should default to one of the default ICC color spaces. Note that CalRGB and CalGray, which are valid bidirectional color spaces are converted to ICC profiles during installation. PS CIE building to ICC is delayed. */ if ( gs_color_space_is_ICC(blend_color_space) ) { /* Blending space is ICC based. If we are doing c-list rendering we will need to write this color space into the clist. */ params.group_color = ICC; params.group_color_numcomps = blend_color_space->cmm_icc_profile_data->num_comps; /* Get the ICC profile */ params.iccprofile = blend_color_space->cmm_icc_profile_data; params.icc_hash = blend_color_space->cmm_icc_profile_data->hashcode; } else { /* Color space was NOT ICC based. PS CIE space and DeviceN are the only other option. Use the ICC default based upon the component count. */ switch (cs_num_components(blend_color_space)) { case 1: profile = pgs->icc_manager->default_gray; break; case 3: profile = pgs->icc_manager->default_rgb; break; case 4: profile = pgs->icc_manager->default_cmyk; break; default: /* We can end up here if we are in a deviceN color space and we have a sep output device */ profile = NULL; params.group_color = DEVICEN; params.group_color_numcomps = cs_num_components(blend_color_space); break; } if (profile != NULL) { params.group_color = ICC; params.group_color_numcomps = profile->num_comps; params.iccprofile = profile; params.icc_hash = profile->hashcode; } } } #ifdef DEBUG if (gs_debug_c('v')) { static const char *const cs_names[] = { GS_COLOR_SPACE_TYPE_NAMES }; dmlprintf6(pgs->memory, "[v](0x%lx)begin_transparency_group [%g %g %g %g] Num_grp_clr_comp = %d\n", (ulong)pgs, pbbox->p.x, pbbox->p.y, pbbox->q.x, pbbox->q.y,params.group_color_numcomps); if (ptgp->ColorSpace) dmprintf1(pgs->memory, " CS = %s", cs_names[(int)gs_color_space_get_index(ptgp->ColorSpace)]); else dmputs(pgs->memory, " (no CS)"); dmprintf2(pgs->memory, " Isolated = %d Knockout = %d\n", ptgp->Isolated, ptgp->Knockout); } #endif params.bbox = *pbbox; return gs_state_update_pdf14trans(pgs, ¶ms); } int gx_begin_transparency_group(gs_imager_state * pis, gx_device * pdev, const gs_pdf14trans_params_t * pparams) { gs_transparency_group_params_t tgp = {0}; gs_rect bbox; if (pparams->Background_components != 0 && pparams->Background_components != pdev->color_info.num_components) return_error(gs_error_rangecheck); tgp.Isolated = pparams->Isolated; tgp.Knockout = pparams->Knockout; tgp.idle = pparams->idle; tgp.mask_id = pparams->mask_id; /* Needed so that we do proper blending */ tgp.group_color = pparams->group_color; tgp.group_color_numcomps = pparams->group_color_numcomps; tgp.iccprofile = pparams->iccprofile; tgp.icc_hashcode = pparams->icc_hash; pis->opacity.alpha = pparams->opacity.alpha; pis->shape.alpha = pparams->shape.alpha; pis->blend_mode = pparams->blend_mode; bbox = pparams->bbox; #ifdef DEBUG if (gs_debug_c('v')) { static const char *const cs_names[] = { GS_COLOR_SPACE_TYPE_NAMES }; dmlprintf6(pdev->memory, "[v](0x%lx)gx_begin_transparency_group [%g %g %g %g] Num_grp_clr_comp = %d\n", (ulong)pis, bbox.p.x, bbox.p.y, bbox.q.x, bbox.q.y, pparams->group_color_numcomps); if (tgp.ColorSpace) dmprintf1(pdev->memory, " CS = %s", cs_names[(int)gs_color_space_get_index(tgp.ColorSpace)]); else dmputs(pdev->memory, " (no CS)"); dmprintf2(pdev->memory, " Isolated = %d Knockout = %d\n", tgp.Isolated, tgp.Knockout); if (tgp.iccprofile) dmprintf(pdev->memory, " Have ICC Profile for blending\n"); } #endif if (dev_proc(pdev, begin_transparency_group) != 0) return (*dev_proc(pdev, begin_transparency_group)) (pdev, &tgp, &bbox, pis, NULL); else return 0; } int gs_end_transparency_group(gs_state *pgs) { gs_pdf14trans_params_t params = { 0 }; if (pgs->is_gstate && check_for_nontrans_pattern(pgs, (unsigned char *)"gs_end_transparency_group")) { return(0); } if_debug0m('v', pgs->memory, "[v]gs_end_transparency_group\n"); params.pdf14_op = PDF14_END_TRANS_GROUP; /* Other parameters not used */ return gs_state_update_pdf14trans(pgs, ¶ms); } int gx_end_transparency_group(gs_imager_state * pis, gx_device * pdev) { if_debug0m('v', pis->memory, "[v]gx_end_transparency_group\n"); if (dev_proc(pdev, end_transparency_group) != 0) return (*dev_proc(pdev, end_transparency_group)) (pdev, pis); else return 0; } /* Commands for handling q softmask Q in graphic states */ int gs_push_transparency_state(gs_state *pgs) { gs_pdf14trans_params_t params = { 0 }; gs_imager_state * pis = (gs_imager_state *)pgs; int code; if (check_for_nontrans_pattern(pgs, (unsigned char *)"gs_push_transparency_state")) { return(0); } /* Set the pending flag to true, which indicates that we need to watch for end transparency soft masks when we are at this graphic state level */ /* pis->trans_flags.xstate_pending = true; */ /* Actually I believe the above flag is not needed. We really should be watching for the softmask even at the base level. What we need to watch for are q operations after a soft mask end has occured. */ /* Check if we have a change flag set to true. this indicates that a softmask is present. We will need to send a push state to save the current soft mask, so that we can restore it later */ if (pis->trans_flags.xstate_change) { if_debug0m('v', pgs->memory, "[v]gs_push_transparency_state sending\n"); params.pdf14_op = PDF14_PUSH_TRANS_STATE; code = gs_state_update_pdf14trans(pgs, ¶ms); if (code < 0) return(code); } else { if_debug0m('v', pgs->memory, "[v]gs_push_transparency_state NOT sending\n"); } return(0); } int gs_pop_transparency_state(gs_state *pgs, bool force) { gs_pdf14trans_params_t params = { 0 }; gs_imager_state * pis = (gs_imager_state *)pgs; int code; if (check_for_nontrans_pattern(pgs, (unsigned char *)"gs_pop_transparency_state")) { return(0); } /* Check if flag is set, which indicates that we have an active softmask for the graphic state. We need to communicate to the compositor to pop the softmask */ if ( pis->trans_flags.xstate_change || force) { if_debug0m('v', pgs->memory, "[v]gs_pop_transparency_state sending\n"); params.pdf14_op = PDF14_POP_TRANS_STATE; code = gs_state_update_pdf14trans(pgs, ¶ms); if ( code < 0 ) return (code); } else { if_debug0m('v', pgs->memory, "[v]gs_pop_transparency_state NOT sending\n"); } /* There is no reason to reset any of the flags since they will be reset by the graphic state restore */ return(0); } int gx_pop_transparency_state(gs_imager_state * pis, gx_device * pdev) { if_debug0m('v', pis->memory, "[v]gx_pop_transparency_state\n"); if (dev_proc(pdev, pop_transparency_state) != 0) return (*dev_proc(pdev, pop_transparency_state)) (pdev, pis); else return 0; } int gx_push_transparency_state(gs_imager_state * pis, gx_device * pdev) { if_debug0m('v', pis->memory, "[v]gx_push_transparency_state\n"); if (dev_proc(pdev, push_transparency_state) != 0) return (*dev_proc(pdev, push_transparency_state)) (pdev, pis); else return 0; } /* * Handler for identity mask transfer functions. */ static int mask_transfer_identity(double in, float *out, void *proc_data) { *out = (float) in; return 0; } void gs_trans_mask_params_init(gs_transparency_mask_params_t *ptmp, gs_transparency_mask_subtype_t subtype) { ptmp->ColorSpace = 0; ptmp->subtype = subtype; ptmp->Background_components = 0; ptmp->GrayBackground = 0.0; ptmp->TransferFunction = mask_transfer_identity; ptmp->TransferFunction_data = 0; ptmp->replacing = false; ptmp->iccprofile = NULL; } int gs_begin_transparency_mask(gs_state * pgs, const gs_transparency_mask_params_t * ptmp, const gs_rect * pbbox, bool mask_is_image) { gs_pdf14trans_params_t params = { 0 }; gs_pdf14trans_params_t params_color = { 0 }; const int l = sizeof(params.Background[0]) * ptmp->Background_components; int i, code; gs_color_space *blend_color_space; gsicc_manager_t *icc_manager = pgs->icc_manager; if (check_for_nontrans_pattern(pgs, (unsigned char *)"gs_pop_transparency_state")) { return(0); } params.pdf14_op = PDF14_BEGIN_TRANS_MASK; params.bbox = *pbbox; params.subtype = ptmp->subtype; params.Background_components = ptmp->Background_components; memcpy(params.Background, ptmp->Background, l); params.GrayBackground = ptmp->GrayBackground; params.transfer_function = ptmp->TransferFunction_data; params.function_is_identity = (ptmp->TransferFunction == mask_transfer_identity); params.mask_is_image = mask_is_image; params.replacing = ptmp->replacing; /* The eventual state that we want this smask to be moved to is always gray. This should provide us with a significant speed improvement over the old code. This does not keep us from having groups within the softmask getting blended in different color spaces, it just makes the final space be gray, which is what we will need to get to eventually anyway. In this way we avoid a final color conversion on a potentially large buffer. */ /* Also check if we have loaded in the transparency icc profiles. If not go ahead and take care of that now */ if (icc_manager->smask_profiles == NULL) { code = gsicc_initialize_iccsmask(icc_manager); if (code < 0) return(code); } /* A new soft mask group, make sure the profiles are set */ if_debug0m('v', pgs->memory, "[v]pushing soft mask color sending\n"); if (params.subtype != TRANSPARENCY_MASK_None) { params_color.pdf14_op = PDF14_PUSH_SMASK_COLOR; code = gs_state_update_pdf14trans(pgs, ¶ms_color); if (code < 0) return(code); blend_color_space = gs_cspace_new_DeviceGray(pgs->memory); blend_color_space->cmm_icc_profile_data = pgs->icc_manager->default_gray; rc_increment(blend_color_space->cmm_icc_profile_data); if_debug8m('v', pgs->memory, "[v](0x%lx)gs_begin_transparency_mask [%g %g %g %g]\n\ subtype = %d Background_components = %d %s\n", (ulong)pgs, pbbox->p.x, pbbox->p.y, pbbox->q.x, pbbox->q.y, (int)ptmp->subtype, ptmp->Background_components, (ptmp->TransferFunction == mask_transfer_identity ? "no TR" : "has TR")); /* Sample the transfer function */ for (i = 0; i < MASK_TRANSFER_FUNCTION_SIZE; i++) { float in = (float)(i * (1.0 / (MASK_TRANSFER_FUNCTION_SIZE - 1))); float out; ptmp->TransferFunction(in, &out, ptmp->TransferFunction_data); params.transfer_fn[i] = (byte)floor((double)(out * 255 + 0.5)); } /* Note: This function is called during the c-list writer side. */ if ( blend_color_space->cmm_icc_profile_data != NULL ) { /* Blending space is ICC based. If we are doing c-list rendering we will need to write this color space into the clist. */ params.group_color = ICC; params.group_color_numcomps = blend_color_space->cmm_icc_profile_data->num_comps; /* Get the ICC profile */ /* We don't reference count this - see comment in * pdf14_update_device_color_procs_pop_c() */ params.iccprofile = blend_color_space->cmm_icc_profile_data; params.icc_hash = blend_color_space->cmm_icc_profile_data->hashcode; } else { params.group_color = GRAY_SCALE; params.group_color_numcomps = 1; /* Need to check */ } /* Explicitly decrement the profile data since blend_color_space may not * be an ICC color space object. */ rc_decrement(blend_color_space->cmm_icc_profile_data, "gs_begin_transparency_mask"); rc_decrement_only_cs(blend_color_space, "gs_begin_transparency_mask"); } return gs_state_update_pdf14trans(pgs, ¶ms); } /* This occurs on the c-list reader side */ int gx_begin_transparency_mask(gs_imager_state * pis, gx_device * pdev, const gs_pdf14trans_params_t * pparams) { gx_transparency_mask_params_t tmp; const int l = sizeof(pparams->Background[0]) * pparams->Background_components; tmp.group_color = pparams->group_color; tmp.subtype = pparams->subtype; tmp.group_color_numcomps = pparams->group_color_numcomps; tmp.Background_components = pparams->Background_components; memcpy(tmp.Background, pparams->Background, l); tmp.GrayBackground = pparams->GrayBackground; tmp.function_is_identity = pparams->function_is_identity; tmp.idle = pparams->idle; tmp.replacing = pparams->replacing; tmp.mask_id = pparams->mask_id; if (tmp.group_color == ICC ) { /* Do I need to ref count here? */ tmp.iccprofile = pparams->iccprofile; tmp.icc_hashcode = pparams->icc_hash; } else { tmp.iccprofile = NULL; tmp.icc_hashcode = 0; } memcpy(tmp.transfer_fn, pparams->transfer_fn, size_of(tmp.transfer_fn)); if_debug9m('v', pis->memory, "[v](0x%lx)gx_begin_transparency_mask [%g %g %g %g]\n" " subtype = %d Background_components = %d Num_grp_clr_comp = %d %s\n", (ulong)pis, pparams->bbox.p.x, pparams->bbox.p.y, pparams->bbox.q.x, pparams->bbox.q.y, (int)tmp.subtype, tmp.Background_components, tmp.group_color_numcomps, (tmp.function_is_identity ? "no TR" : "has TR")); if (dev_proc(pdev, begin_transparency_mask) != 0) return (*dev_proc(pdev, begin_transparency_mask)) (pdev, &tmp, &(pparams->bbox), pis, NULL); else return 0; } int gs_end_transparency_mask(gs_state *pgs, gs_transparency_channel_selector_t csel) { gs_pdf14trans_params_t params = { 0 }; gs_pdf14trans_params_t params_color = { 0 }; gs_imager_state * pis = (gs_imager_state *)pgs; int code; if (check_for_nontrans_pattern(pgs, (unsigned char *)"gs_end_transparency_mask")) { return(0); } /* If we have done a q then set a flag to watch for any Qs */ /* if (pis->trans_flags.xstate_pending) pis->trans_flags.xstate_change = true; */ /* This should not depend upon if we have encountered a q operation. We could be setting a softmask, before there is any q operation. Unlikely but it could happen. Then if we encouter a q operation (and this flag is true) we will need to push the mask graphic state (PDF14_PUSH_TRANS_STATE). */ pis->trans_flags.xstate_change = true; if_debug1m('v', pis->memory, "[v]xstate_changed set true, gstate level is %d\n", pgs->level); if_debug2m('v', pis->memory, "[v](0x%lx)gs_end_transparency_mask(%d)\n", (ulong)pgs, (int)csel); params.pdf14_op = PDF14_END_TRANS_MASK; /* Other parameters not used */ params.csel = csel; /* If this is the outer end then return us to our normal defaults */ if_debug0m('v', pis->memory, "[v]popping soft mask color sending\n"); params_color.pdf14_op = PDF14_POP_SMASK_COLOR; code = gs_state_update_pdf14trans(pgs, ¶ms_color); if (code < 0) return(code); return gs_state_update_pdf14trans(pgs, ¶ms); } int gx_end_transparency_mask(gs_imager_state * pis, gx_device * pdev, const gs_pdf14trans_params_t * pparams) { if_debug2m('v', pis->memory, "[v](0x%lx)gx_end_transparency_mask(%d)\n", (ulong)pis, (int)pparams->csel); if (dev_proc(pdev, end_transparency_mask) != 0) return (*dev_proc(pdev, end_transparency_mask)) (pdev, pis); else return 0; } /* * We really only care about the number of spot colors when we have * a device which supports spot colors. With the other devices we use * the tint transform function for DeviceN and Separation color spaces * and convert spot colors into process colors. */ static int get_num_pdf14_spot_colors(gs_state * pgs) { gx_device * dev = pgs->device; gs_devn_params * pclist_devn_params = dev_proc(dev, ret_devn_params)(dev); /* * Devices which support spot colors store the PageSpotColors device * parameter inside their devn_params structure. (This is done by the * devn_put_params routine.) The PageSpotColors device parameter is * set by pdf_main whenever a PDF page is being processed. See * countspotcolors in lib/pdf_main.ps. */ if (pclist_devn_params != NULL) { /* If the sep order names were specified, then we should only allocate for those. But only the nonstandard colorants that are stored in num_separations. See devn_put_params for details on this. Right now, the PDF14 device will always include CMYK. A future optimization is to be able to NOT have those included in the buffer allocations if we don't specify them. It would then be possible to output 8 separations at a time without using compressed color. */ if (pclist_devn_params->num_separation_order_names == 0) { return pclist_devn_params->page_spot_colors; } return (pclist_devn_params->separations.num_separations); } return 0; } int gs_push_pdf14trans_device(gs_state * pgs, bool is_pattern) { gs_pdf14trans_params_t params = { 0 }; cmm_profile_t *icc_profile; gsicc_rendering_param_t render_cond; int code; cmm_dev_profile_t *dev_profile; code = dev_proc(pgs->device, get_profile)(pgs->device, &dev_profile); if (code < 0) return code; gsicc_extract_profile(GS_UNKNOWN_TAG, dev_profile, &icc_profile, &render_cond); params.pdf14_op = PDF14_PUSH_DEVICE; /* * We really only care about the number of spot colors when we have * a device which supports spot colors. With the other devices we use * the tint transform function for DeviceN and Separation color spaces * and convert spot colors into process colors. */ params.num_spot_colors = get_num_pdf14_spot_colors(pgs); params.is_pattern = is_pattern; /* If we happen to be in a situation where we are going out to a device whose profile is CIELAB then we will need to make sure that we do our blending in RGB and convert to CIELAB when we do the put_image command */ if (icc_profile->data_cs == gsCIELAB || icc_profile->islab) { params.iccprofile = pgs->icc_manager->default_rgb; } /* Note: Other parameters not used */ return gs_state_update_pdf14trans(pgs, ¶ms); } int gs_pop_pdf14trans_device(gs_state * pgs, bool is_pattern) { gs_pdf14trans_params_t params = { 0 }; params.is_pattern = is_pattern; params.pdf14_op = PDF14_POP_DEVICE; /* Other parameters not used */ return gs_state_update_pdf14trans(pgs, ¶ms); } int gs_abort_pdf14trans_device(gs_state * pgs) { gs_pdf14trans_params_t params = { 0 }; params.pdf14_op = PDF14_ABORT_DEVICE; /* Other parameters not used */ return gs_state_update_pdf14trans(pgs, ¶ms); } /* Something has gone wrong have the device clean up everything */ int gx_abort_trans_device(gs_imager_state * pis, gx_device * pdev) { if_debug1m('v', pis->memory, "[v](0x%lx)gx_abort_trans_device(%d)\n", (ulong)pis); if (dev_proc(pdev, discard_transparency_layer) != 0) return (*dev_proc(pdev, discard_transparency_layer)) (pdev, pis); else return 0; }