diff options
Diffstat (limited to 'source/blender/io/alembic/exporter/abc_export_capi.cc')
| -rw-r--r-- | source/blender/io/alembic/exporter/abc_export_capi.cc | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/source/blender/io/alembic/exporter/abc_export_capi.cc b/source/blender/io/alembic/exporter/abc_export_capi.cc new file mode 100644 index 00000000000..3f8e95a6128 --- /dev/null +++ b/source/blender/io/alembic/exporter/abc_export_capi.cc @@ -0,0 +1,239 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2020 Blender Foundation. + * All rights reserved. + */ + +#include "ABC_alembic.h" +#include "abc_writer_camera.h" +#include "abc_writer_curves.h" +#include "abc_writer_hair.h" +#include "abc_writer_mesh.h" +#include "abc_writer_nurbs.h" +#include "abc_writer_points.h" +#include "abc_writer_transform.h" + +#include "MEM_guardedalloc.h" + +extern "C" { +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_build.h" + +#include "DNA_modifier_types.h" +#include "DNA_scene_types.h" + +#include "BKE_blender_version.h" +#include "BKE_context.h" +#include "BKE_global.h" +#include "BKE_main.h" +#include "BKE_scene.h" + +#include "BLI_fileops.h" +#include "BLI_path_util.h" +#include "BLI_string.h" + +#include "WM_api.h" +#include "WM_types.h" +} + +struct ExportJobData { + ViewLayer *view_layer; + Main *bmain; + wmWindowManager *wm; + + char filename[1024]; + ExportSettings settings; + + short *stop; + short *do_update; + float *progress; + + bool was_canceled; + bool export_ok; +}; + +static void export_startjob(void *customdata, short *stop, short *do_update, float *progress) +{ + ExportJobData *data = static_cast<ExportJobData *>(customdata); + + data->stop = stop; + data->do_update = do_update; + data->progress = progress; + + /* XXX annoying hack: needed to prevent data corruption when changing + * scene frame in separate threads + */ + G.is_rendering = true; + WM_set_locked_interface(data->wm, true); + G.is_break = false; + + DEG_graph_build_from_view_layer( + data->settings.depsgraph, data->bmain, data->settings.scene, data->view_layer); + BKE_scene_graph_update_tagged(data->settings.depsgraph, data->bmain); + + try { + AbcExporter exporter(data->bmain, data->filename, data->settings); + + Scene *scene = data->settings.scene; /* for the CFRA macro */ + const int orig_frame = CFRA; + + data->was_canceled = false; + exporter(do_update, progress, &data->was_canceled); + + if (CFRA != orig_frame) { + CFRA = orig_frame; + + BKE_scene_graph_update_for_newframe(data->settings.depsgraph, data->bmain); + } + + data->export_ok = !data->was_canceled; + } + catch (const std::exception &e) { + ABC_LOG(data->settings.logger) << "Abc Export error: " << e.what() << '\n'; + } + catch (...) { + ABC_LOG(data->settings.logger) << "Abc Export: unknown error...\n"; + } +} + +static void export_endjob(void *customdata) +{ + ExportJobData *data = static_cast<ExportJobData *>(customdata); + + DEG_graph_free(data->settings.depsgraph); + + if (data->was_canceled && BLI_exists(data->filename)) { + BLI_delete(data->filename, false, false); + } + + std::string log = data->settings.logger.str(); + if (!log.empty()) { + std::cerr << log; + WM_report(RPT_ERROR, "Errors occurred during the export, look in the console to know more..."); + } + + G.is_rendering = false; + WM_set_locked_interface(data->wm, false); +} + +bool ABC_export(struct Scene *scene, + struct bContext *C, + const char *filepath, + const struct AlembicExportParams *params, + bool as_background_job) +{ + ExportJobData *job = static_cast<ExportJobData *>( + MEM_mallocN(sizeof(ExportJobData), "ExportJobData")); + + job->view_layer = CTX_data_view_layer(C); + job->bmain = CTX_data_main(C); + job->wm = CTX_wm_manager(C); + job->export_ok = false; + BLI_strncpy(job->filename, filepath, 1024); + + /* Alright, alright, alright.... + * + * ExportJobData contains an ExportSettings containing a SimpleLogger. + * + * Since ExportJobData is a C-style struct dynamically allocated with + * MEM_mallocN (see above), its constructor is never called, therefore the + * ExportSettings constructor is not called which implies that the + * SimpleLogger one is not called either. SimpleLogger in turn does not call + * the constructor of its data members which ultimately means that its + * std::ostringstream member has a NULL pointer. To be able to properly use + * the stream's operator<<, the pointer needs to be set, therefore we have + * to properly construct everything. And this is done using the placement + * new operator as here below. It seems hackish, but I'm too lazy to + * do bigger refactor and maybe there is a better way which does not involve + * hardcore refactoring. */ + new (&job->settings) ExportSettings(); + job->settings.scene = scene; + job->settings.depsgraph = DEG_graph_new(job->bmain, scene, job->view_layer, DAG_EVAL_RENDER); + + /* TODO(Sybren): for now we only export the active scene layer. + * Later in the 2.8 development process this may be replaced by using + * a specific collection for Alembic I/O, which can then be toggled + * between "real" objects and cached Alembic files. */ + job->settings.view_layer = job->view_layer; + + job->settings.frame_start = params->frame_start; + job->settings.frame_end = params->frame_end; + job->settings.frame_samples_xform = params->frame_samples_xform; + job->settings.frame_samples_shape = params->frame_samples_shape; + job->settings.shutter_open = params->shutter_open; + job->settings.shutter_close = params->shutter_close; + + /* TODO(Sybren): For now this is ignored, until we can get selection + * detection working through Base pointers (instead of ob->flags). */ + job->settings.selected_only = params->selected_only; + + job->settings.export_face_sets = params->face_sets; + job->settings.export_normals = params->normals; + job->settings.export_uvs = params->uvs; + job->settings.export_vcols = params->vcolors; + job->settings.export_hair = params->export_hair; + job->settings.export_particles = params->export_particles; + job->settings.apply_subdiv = params->apply_subdiv; + job->settings.curves_as_mesh = params->curves_as_mesh; + job->settings.flatten_hierarchy = params->flatten_hierarchy; + + /* TODO(Sybren): visible_layer & renderable only is ignored for now, + * to be replaced with collections later in the 2.8 dev process + * (also see note above). */ + job->settings.visible_objects_only = params->visible_objects_only; + job->settings.renderable_only = params->renderable_only; + + job->settings.use_subdiv_schema = params->use_subdiv_schema; + job->settings.pack_uv = params->packuv; + job->settings.global_scale = params->global_scale; + job->settings.triangulate = params->triangulate; + job->settings.quad_method = params->quad_method; + job->settings.ngon_method = params->ngon_method; + + if (job->settings.frame_start > job->settings.frame_end) { + std::swap(job->settings.frame_start, job->settings.frame_end); + } + + bool export_ok = false; + if (as_background_job) { + wmJob *wm_job = WM_jobs_get(CTX_wm_manager(C), + CTX_wm_window(C), + job->settings.scene, + "Alembic Export", + WM_JOB_PROGRESS, + WM_JOB_TYPE_ALEMBIC); + + /* setup job */ + WM_jobs_customdata_set(wm_job, job, MEM_freeN); + WM_jobs_timer(wm_job, 0.1, NC_SCENE | ND_FRAME, NC_SCENE | ND_FRAME); + WM_jobs_callbacks(wm_job, export_startjob, NULL, NULL, export_endjob); + + WM_jobs_start(CTX_wm_manager(C), wm_job); + } + else { + /* Fake a job context, so that we don't need NULL pointer checks while exporting. */ + short stop = 0, do_update = 0; + float progress = 0.f; + + export_startjob(job, &stop, &do_update, &progress); + export_endjob(job); + export_ok = job->export_ok; + + MEM_freeN(job); + } + + return export_ok; +} |