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Ansel 0.0
A darktable fork - bloat + design vision
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Ansel 0.0
A darktable fork - bloat + design vision
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Include dependency graph for dev_roi_request.h: This graph shows which files directly or indirectly include this file:Go to the source code of this file.
Data Structures | |
| struct | dt_dev_roi_request_t |
| The coherent set of numbers a darkroom pipe plans its ROI from. More... | |
| struct | dt_dev_roi_request_store_t |
Typedefs | |
| typedef struct dt_dev_roi_request_t | dt_dev_roi_request_t |
| The coherent set of numbers a darkroom pipe plans its ROI from. | |
| typedef struct dt_dev_roi_request_store_t | dt_dev_roi_request_store_t |
The coherent set of numbers a darkroom pipe plans its ROI from.
These were loose fields of dev->roi, written by the GUI thread in three separate functions and read one at a time by the worker inside _update_darkroom_roi(). Every consumer uses them as a product – natural_scale * scaling * processed_size – so a read that straddles a write yields a frame whose geometry never existed, and which is internally consistent and correctly hashed, so nothing downstream can tell.
They now cross the GUI/pipeline boundary only together, published as one record with a generation. The viewport and the geometry record are the inputs; this is what is derived from them and handed to the pipeline.
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inlinestatic |
natural scaling = MIN(box / processed, 1): the image fits the widget minus its borders.
Pure, so the publisher and any test can call it with numbers rather than a dev. Returns -1 for a non-positive processed size, which is the sentinel dt_dev_get_natural_scale() has always returned when the geometry was not ready.
Definition at line 87 of file dev_roi_request.h.
References L.
Referenced by dt_dev_roi_request_publish().
| dt_dev_roi_request_t dt_dev_roi_request_get | ( | const struct dt_develop_t * | dev | ) |
Coherent copy (seqlock read). The returned record is zeroed with valid == FALSE when nothing usable has been published.
| void dt_dev_roi_request_init | ( | struct dt_develop_t * | dev | ) |
Seed the store. Call once, from dt_dev_init().
Definition at line 72 of file dev_roi_request.c.
References dt_atomic_set_uint64(), dt_dev_roi_request_neutral(), dt_dev_roi_request_store_t::generation, IS_NULL_PTR, dt_develop_t::roi_request, and dt_dev_roi_request_store_t::value.
Referenced by dt_dev_init().
| void dt_dev_roi_request_latch | ( | struct dt_dev_pixelpipe_t * | pipe, |
| const dt_dev_roi_request_t * | request | ||
| ) |
Publish onto a pipe the request its next run is planned from. Darkroom worker only.
Same seqlock as the dev-level store, and for the same reason: the worker writes this once per loop iteration while the GUI thread can read it at any moment – dt_dev_pipelines_share_preview_output() does exactly that from the darkroom expose path, and every dt_dev_pixelpipe_has_preview_output() call from an IOP GUI callback does too. A plain struct assignment across those threads is a torn read of the same shape this record exists to prevent.
Definition at line 241 of file dev_roi_request.c.
References dt_atomic_get_uint64(), dt_atomic_set_uint64(), dt_dev_roi_request_store_t::generation, IS_NULL_PTR, L, pipe, dt_dev_pixelpipe_t::roi_request, and dt_dev_roi_request_store_t::value.
Referenced by dt_dev_darkroom_pipeline().
| float dt_dev_roi_request_natural_scale | ( | const struct dt_develop_t * | dev | ) |
| dt_dev_roi_request_t dt_dev_roi_request_neutral | ( | void | ) |
The value a pipe carries before the worker has latched anything.
NOT a zeroed record. scaling = 1 and natural_scale = -1 are what dt_dev_reset_roi() left on every dev, headless ones included, before this record existed – and iop/finalscale.c multiplies exactly those two to decide whether it enables itself. Seeding zeros there would change piece->enabled on any pipe that never gets latched, which is every export, thumbnail and snapshot pipe.
Definition at line 61 of file dev_roi_request.c.
References dt_dev_roi_request_t::center_x, dt_dev_roi_request_t::center_y, L, dt_dev_roi_request_t::natural_scale, and dt_dev_roi_request_t::scaling.
Referenced by dt_dev_pixelpipe_init_cached(), dt_dev_roi_request_init(), and dt_dev_roi_request_of_pipe().
| dt_dev_roi_request_t dt_dev_roi_request_of_pipe | ( | const struct dt_dev_pixelpipe_t * | pipe | ) |
Coherent copy of what a pipe was last latched with. Safe from any thread.
| int32_t dt_dev_roi_request_preview_height | ( | const struct dt_develop_t * | dev | ) |
| int32_t dt_dev_roi_request_preview_width | ( | const struct dt_develop_t * | dev | ) |
| uint64_t dt_dev_roi_request_publish | ( | struct dt_develop_t * | dev | ) |
Recompute the derived members from the viewport and the geometry record, and publish if anything changed. Returns the current generation.
The ONE place the derived values are computed, and GUI-thread only: it reads the viewport, which only the GUI thread writes. The generation advances only on a real payload change, which is what lets a consumer treat it as a cache key.
Definition at line 102 of file dev_roi_request.c.
References _payload_equal(), dt_dev_roi_request_t::box_height, dt_dev_viewport_state_t::box_height, dt_dev_roi_request_t::box_width, dt_dev_viewport_state_t::box_width, dt_dev_roi_request_t::center_x, dt_dev_viewport_state_t::center_x, dt_dev_roi_request_t::center_y, dt_dev_viewport_state_t::center_y, dt_dev_viewport_state_t::configured, dt_atomic_get_uint64(), dt_atomic_set_int(), dt_atomic_set_uint64(), dt_conf_get_string(), dt_dev_geometry_snapshot(), DT_DEV_PIPE_ZOOMED, dt_dev_pixelpipe_or_changed(), dt_dev_pixelpipe_set_mask_rasterization_step(), dt_dev_roi_natural_scale(), dt_dev_viewport_get(), dt_dev_roi_request_t::generation, dt_dev_roi_request_store_t::generation, geometry, dt_develop_t::gui_attached, IS_NULL_PTR, L, dt_dev_roi_request_t::natural_scale, dt_develop_t::pipe, dt_dev_roi_request_t::preview_height, dt_develop_t::preview_pipe, dt_dev_roi_request_t::preview_width, dt_dev_roi_request_t::processed_height, dt_dev_roi_request_t::processed_width, dt_develop_t::roi_request, dt_dev_roi_request_t::scaling, dt_dev_viewport_state_t::scaling, dt_dev_pixelpipe_t::shutdown, TRUE, dt_dev_roi_request_t::valid, and dt_dev_roi_request_store_t::value.
Referenced by _darkroom_change_mask_rasterization(), dt_dev_get_thumbnail_size(), dt_dev_viewport_reset(), dt_dev_viewport_set_border(), dt_dev_viewport_set_box(), dt_dev_viewport_set_center(), dt_dev_viewport_set_scaling(), and dt_dev_viewport_set_widget_size().
| gboolean dt_dev_roi_request_valid | ( | const struct dt_develop_t * | dev | ) |
1.9.8