mirror of
https://github.com/libretro/RetroArch.git
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libretroadmin
137d495ab1
Each of these is assigned and never read anywhere in the tree, so the work that feeds them is spent for nothing: content_label_len on the thumbnail path data, sink_discarded on the audio state, runahead_save_state_size, task_count and msg_queue_regular_padding_x on the widgets, pipeline_active on the display draw struct, resolution_hd_enable on the D3D8 and D3D9 states, memory_search_initialized on the cheat manager, window_title_len and video_frame_delay_auto_t::frame_time_avg on the video state, and input_dialog_kb_type on the menu state. Where a write captured a strlcpy() or fill_pathname() result the call stays and only the assignment goes. Two of them were holding up more than themselves. gfx_widgets_update_icon_layout() branched on whether icons are loaded solely to pick a padding value, so that conditional computed nothing and is gone with the field. memory_search_initialized sat beside memory_initialized, which is read, leaving two near-identical names for the next reader to tell apart.
607 lines
24 KiB
C++
607 lines
24 KiB
C++
/* Copyright (C) 2010-2019 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (gfx_thumbnail.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __GFX_THUMBNAIL_H
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#define __GFX_THUMBNAIL_H
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#include <retro_common_api.h>
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#include <libretro.h>
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#include <boolean.h>
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#include <retro_miscellaneous.h>
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#include <retro_atomic.h>
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#include "gfx_animation.h"
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#include "../playlist.h"
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struct data_transfer;
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RETRO_BEGIN_DECLS
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/* Note: This implementation reflects the current
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* setup of:
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* - gfx_thumbnail_set_system()
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* - menu_driver_set_thumbnail_content()
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* - menu_driver_update_thumbnail_path()
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* This is absolutely not the best way to handle things,
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* but I have no interest in rewriting the existing
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* menu code... */
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enum gfx_thumbnail_id
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{
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GFX_THUMBNAIL_RIGHT = 0,
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GFX_THUMBNAIL_LEFT,
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GFX_THUMBNAIL_ICON
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};
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/* Prevent direct access to gfx_thumbnail_path_data_t members */
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typedef struct gfx_thumbnail_path_data gfx_thumbnail_path_data_t;
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/* Used fixed size char arrays here, just to avoid
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* the inconvenience of having to calloc()/free()
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* each individual entry by hand... */
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struct gfx_thumbnail_path_data
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{
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enum playlist_thumbnail_mode playlist_right_mode;
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enum playlist_thumbnail_mode playlist_left_mode;
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enum playlist_thumbnail_mode playlist_icon_mode;
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size_t playlist_index;
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size_t system_len;
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char content_label[NAME_MAX_LENGTH];
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char content_core_name[NAME_MAX_LENGTH];
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char system[NAME_MAX_LENGTH];
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char content_db_name[NAME_MAX_LENGTH];
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char content_path[PATH_MAX_LENGTH];
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char content_img[PATH_MAX_LENGTH];
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char content_img_short[PATH_MAX_LENGTH];
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char content_img_full[PATH_MAX_LENGTH];
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char right_path[PATH_MAX_LENGTH];
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char left_path[PATH_MAX_LENGTH];
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char icon_path[PATH_MAX_LENGTH];
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};
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/* Initialisation */
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/* Creates new thumbnail path data container.
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* Returns handle to new gfx_thumbnail_path_data_t object.
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* on success, otherwise NULL.
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* Note: Returned object must be free()d */
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gfx_thumbnail_path_data_t *gfx_thumbnail_path_init(void);
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/* Resets thumbnail path data
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* (blanks all internal string containers) */
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void gfx_thumbnail_path_reset(gfx_thumbnail_path_data_t *path_data);
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/* Utility Functions */
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/* Returns true if specified thumbnail is enabled
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* (i.e. if 'type' is not equal to MENU_ENUM_LABEL_VALUE_OFF) */
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bool gfx_thumbnail_is_enabled(gfx_thumbnail_path_data_t *path_data, enum gfx_thumbnail_id thumbnail_id);
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/* Setters */
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/* Fills content_img field of path_data using existing
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* content_label field (for internal use only) */
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void gfx_thumbnail_fill_content_img(char *s, size_t len, const char *src, bool shorten);
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/* Sets current 'system' (default database name).
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* Returns true if 'system' is valid.
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* If playlist is provided, extracts system-specific
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* thumbnail assignment metadata (required for accurate
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* usage of gfx_thumbnail_is_enabled())
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* > Used as a fallback when individual content lacks an
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* associated database name */
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bool gfx_thumbnail_set_system(gfx_thumbnail_path_data_t *path_data, const char *system, playlist_t *playlist);
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/* Sets current thumbnail content according to the specified label.
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* Returns true if content is valid */
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bool gfx_thumbnail_set_content(gfx_thumbnail_path_data_t *path_data, const char *label);
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/* Sets current thumbnail content to the specified image.
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* Returns true if content is valid */
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bool gfx_thumbnail_set_content_image(gfx_thumbnail_path_data_t *path_data, const char *img_dir, const char *img_name);
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/* Sets current thumbnail content to the specified playlist entry.
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* Returns true if content is valid.
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* > Note: It is always best to use playlists when setting
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* thumbnail content, since there is no guarantee that the
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* corresponding menu entry label will contain a useful
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* identifier (it may be 'tainted', e.g. with the current
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* core name). 'Real' labels should be extracted from source */
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bool gfx_thumbnail_set_content_playlist(gfx_thumbnail_path_data_t *path_data, playlist_t *playlist, size_t idx);
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/* Updaters */
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/* Updates path for specified thumbnail identifier (right, left).
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* Must be called after:
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* - gfx_thumbnail_set_system()
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* - gfx_thumbnail_set_content*()
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* ...and before:
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* - gfx_thumbnail_get_path()
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* Returns true if generated path is valid */
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bool gfx_thumbnail_update_path(gfx_thumbnail_path_data_t *path_data, enum gfx_thumbnail_id thumbnail_id);
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/* Getters */
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/* Fetches current content directory.
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* Returns true if content directory is valid. */
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size_t gfx_thumbnail_get_content_dir(gfx_thumbnail_path_data_t *path_data, char *s, size_t len);
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/* Gets the common savestate thumbnail path. */
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void gfx_savestate_thumbnail_get_path(char *s, size_t len, const char *state_name, int state_slot);
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/* Defines the current status of an entry
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* thumbnail texture */
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enum gfx_thumbnail_status
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{
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GFX_THUMBNAIL_STATUS_UNKNOWN = 0,
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GFX_THUMBNAIL_STATUS_PENDING,
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GFX_THUMBNAIL_STATUS_AVAILABLE,
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GFX_THUMBNAIL_STATUS_MISSING
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};
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/* Defines thumbnail alignment within
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* gfx_thumbnail_draw() bounding box */
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enum gfx_thumbnail_alignment
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{
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GFX_THUMBNAIL_ALIGN_CENTRE = 0,
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GFX_THUMBNAIL_ALIGN_TOP,
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GFX_THUMBNAIL_ALIGN_BOTTOM,
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GFX_THUMBNAIL_ALIGN_LEFT,
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GFX_THUMBNAIL_ALIGN_RIGHT
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};
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/* Defines all possible thumbnail shadow
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* effect types */
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enum gfx_thumbnail_shadow_type
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{
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GFX_THUMBNAIL_SHADOW_NONE = 0,
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GFX_THUMBNAIL_SHADOW_DROP,
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GFX_THUMBNAIL_SHADOW_OUTLINE
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};
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enum gfx_thumbnail_flags
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{
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GFX_THUMB_FLAG_FADE_ACTIVE = (1 << 0),
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GFX_THUMB_FLAG_CORE_ASPECT = (1 << 1),
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GFX_THUMB_FLAG_BG_ONLY = (1 << 2),
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GFX_THUMB_FLAG_ANIM_ACTIVE = (1 << 3)
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};
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/* Holds all runtime parameters associated with
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* an entry thumbnail.
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*
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* @c status is read by the video thread (via
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* gfx_thumbnail_draw) and written by both the upload-callback
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* thread (release-store after publishing texture/width/height)
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* and the main thread (a number of plain transitions during menu
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* processing). retro_atomic_int_t backs the field with an
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* atomic-typed integer that is safe to read/write through the
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* retro_atomic_*_int API on every supported backend.
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*
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* Same size and alignment as plain int on every backend; struct
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* layout is unchanged. The cost of the acquire/release barriers
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* on weak-memory ARM/PowerPC is negligible at this field's
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* access rates (menu and frame draw, never per-sample). */
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/* LIFECYCLE CONTRACT: every instance must be zeroed before any
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* other thumbnail API call - including gfx_thumbnail_reset(),
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* which frees the animation pointers below and therefore treats
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* nonzero garbage as live allocations. calloc'd and static
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* instances are inherently safe; anything malloc'd or
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* stack-allocated must go through gfx_thumbnail_init_blank(),
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* which also stores the atomically-typed status correctly and
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* stays complete as fields are added. Manual field-by-field
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* initialization is how the materialui Android startup abort
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* happened; do not reintroduce it. */
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typedef struct
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{
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uintptr_t texture;
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/* Animated thumbnail state (all main-thread only). 'anim' is a
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* streaming image_transfer handle which BORROWS 'anim_buf'; both
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* are owned by the thumbnail and released in gfx_thumbnail_reset
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* (or when the animation finishes its final loop). 'anim_buf'
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* is either a malloc'd file read (anim_dt NULL, freed with
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* free()) or borrowed from an adopted nbio handle (released via
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* data_transfer_free(anim_dt); anim_buf itself must not be
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* freed). */
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void *anim;
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/* Shared preview session (gfx_anim_preview_t*) over anim / anim_dt:
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* the window feeder and the preview audio. Non-owning. */
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void *anim_sess;
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void *anim_buf;
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struct data_transfer *anim_dt; /* transfer owning anim_buf (and the
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adopted nbio handle beneath it) */
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/* Decode-worker ping-pong job pair (HAVE_THREADS builds): while
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* the frame held in one job waits for its due time, the other is
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* already decoding its successor. anim_job_upload selects which
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* of the two uploads next. */
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void *anim_job;
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void *anim_job2;
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size_t anim_buf_len; /* size of anim_buf */
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int64_t anim_next_us; /* time the next frame is due (0 = at once) */
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/* Generation the in-flight request was issued under. Only
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* meaningful while status is PENDING: if it no longer matches the
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* current generation, that request was superseded and nothing will
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* ever deliver it, so the slot must be re-requested rather than
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* waited on. */
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uint64_t list_id;
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int32_t anim_loops_left; /* remaining loops, -1 = infinite */
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unsigned width;
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unsigned height;
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float alpha;
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float delay_timer;
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retro_atomic_int_t status;
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uint8_t flags;
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uint8_t anim_type; /* enum image_type_enum of 'anim' */
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uint8_t anim_job_upload; /* index of the next job to upload (0/1) */
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uint8_t anim_read_pending; /* adopted nbio read still in flight;
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animation/audio held at the static
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frame until it completes */
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/* Asynchronous upload bookkeeping (threaded video). upload_seq is
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* bumped by gfx_thumbnail_reset(); a completed upload whose seq no
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* longer matches was superseded and is unloaded on delivery.
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* anim_inflight is set while one animation frame is on its way to
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* the video thread; further frames are skipped until it lands, so
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* a slow present never queues frames faster than it shows them. */
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uint16_t upload_seq;
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uint8_t anim_inflight;
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uint8_t anim_windowed; /* anim_dt is a sliding window fed from the
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decoder frontier during playback, not a
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buffer pumped to completion: residency is
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the window, not the whole file (large
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video previews). 0 = classic whole-file
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buffer (audio preview, non-reserve
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platforms, adopted stills). */
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} gfx_thumbnail_t;
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/* Field-by-field initializer for non-trivial gfx_thumbnail_t.
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*
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* Now that .status is atomically-typed, a wholesale
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* memset(t, 0, sizeof(*t)) of a struct containing this type
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* warns under CXX_BUILD's C++ compile (the struct is no longer
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* trivially-copyable per C++11), even though the resulting
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* bytes are identical. RetroArch's CXX_BUILD mode
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* compiles every .c file as C++, so this helper is required
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* for clean builds, not just style.
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*
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* gfx_thumbnail_init_blank zero-inits the small struct field
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* by field, using retro_atomic_int_init() for the atomic field
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* so the first write is well-defined under C11 stdatomic and
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* C++11 std::atomic. Equivalent in effect to the pre-port
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* memset on every real backend (status field is also zero ->
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* UNKNOWN). */
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static INLINE void gfx_thumbnail_init_blank(gfx_thumbnail_t *t)
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{
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t->texture = 0;
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t->anim = NULL;
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t->anim_buf = NULL;
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t->anim_dt = NULL;
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t->anim_sess = NULL;
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t->anim_job = NULL;
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t->anim_job2 = NULL;
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t->anim_buf_len = 0;
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t->anim_next_us = 0;
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t->list_id = 0;
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t->anim_loops_left = 0;
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t->width = 0;
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t->height = 0;
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t->alpha = 0.0f;
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t->delay_timer = 0.0f;
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retro_atomic_int_init(&t->status, 0 /* GFX_THUMBNAIL_STATUS_UNKNOWN */);
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t->flags = 0;
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t->anim_type = 0;
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t->anim_job_upload = 0;
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t->anim_read_pending = 0;
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t->anim_windowed = 0;
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t->upload_seq = 0;
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t->anim_inflight = 0;
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}
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/* Holds all configuration parameters associated
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* with a thumbnail shadow effect */
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typedef struct
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{
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struct
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{
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unsigned width;
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} outline;
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float alpha;
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struct
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{
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float x_offset;
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float y_offset;
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} drop;
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enum gfx_thumbnail_shadow_type type;
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} gfx_thumbnail_shadow_t;
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/* Structure containing all gfx_thumbnail
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* variables */
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struct gfx_thumbnail_state
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{
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/* Due to the asynchronous nature of thumbnail
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* loading, it is quite possible to trigger a load
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* then navigate to a different menu list before
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* the load is complete/handled. As an additional
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* safety check, we therefore tag the current menu
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* list with counter value that is incremented whenever
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* a list is cleared/set. This is sent as userdata when
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* requesting a thumbnail, and the upload is only
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* handled if the tag matches the most recent value
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* at the time when the load completes */
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uint64_t list_id;
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/* When streaming thumbnails, to minimise the processing
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* of unnecessary images (i.e. when scrolling rapidly through
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* playlists), we delay loading until an entry has been on screen
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* for at least gfx_thumbnail_delay ms */
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float stream_delay;
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/* Animated thumbnails: per-vsync frame-decode budget, so many
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* simultaneously visible animations degrade to a lower frame rate
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* instead of stalling the menu (main thread only) */
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int64_t anim_budget_start_us;
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int64_t anim_budget_used_us;
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/* Duration in ms of the thumbnail 'fade in' animation */
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float fade_duration;
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/* When true, 'fade in' animation will also be
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* triggered for missing thumbnails */
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bool fade_missing;
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};
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typedef struct gfx_thumbnail_state gfx_thumbnail_state_t;
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/* Setters */
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/* When streaming thumbnails, sets time in ms that an
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* entry must be on screen before an image load is
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* requested
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* > if 'delay' is negative, default value is set */
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void gfx_thumbnail_set_stream_delay(float delay);
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/* Sets duration in ms of the thumbnail 'fade in'
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* animation
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* > If 'duration' is negative, default value is set */
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void gfx_thumbnail_set_fade_duration(float duration);
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/* Specifies whether 'fade in' animation should be
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* triggered for missing thumbnails
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* > When 'true', allows menu driver to animate
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* any 'thumbnail unavailable' notifications */
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void gfx_thumbnail_set_fade_missing(bool fade_missing);
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/* Core interface */
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/* Tears down the shared animated-thumbnail decode worker (a no-op in
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* builds without HAVE_THREADS, and when the worker was never started).
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* Must be called after every gfx_thumbnail_t has been reset. The worker
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* is recreated lazily by the next animated thumbnail. */
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void gfx_thumbnail_anim_worker_deinit(void);
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/* When called, prevents the handling of any pending
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* thumbnail load requests
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* >> **MUST** be called before deleting any gfx_thumbnail_t
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* objects passed to gfx_thumbnail_request() or
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* gfx_thumbnail_process_stream(), otherwise
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* heap-use-after-free errors *will* occur */
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void gfx_thumbnail_cancel_pending_requests(void);
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/* True if 'thumbnail' is waiting on a request that has since been
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* superseded, i.e. it is PENDING with nothing behind it. Resets the
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* thumbnail (returning it to UNKNOWN) and returns true in that case, so
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* the caller's normal "request if UNKNOWN" path picks it up again.
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* gfx_thumbnail_process_stream()/_streams() call this themselves; menu
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* drivers that call gfx_thumbnail_request() directly should call it
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* before testing the status. */
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bool gfx_thumbnail_reset_if_orphaned(gfx_thumbnail_t *thumbnail);
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/* Requests loading of the specified thumbnail
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* - If operation fails, 'thumbnail->status' will be set to
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* MUI_THUMBNAIL_STATUS_MISSING
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* - If operation is successful, 'thumbnail->status' will be
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* set to MUI_THUMBNAIL_STATUS_PENDING
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* 'thumbnail' will be populated with texture info/metadata
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* once the image load is complete
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* NOTE 1: Must be called *after* gfx_thumbnail_set_system()
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* and gfx_thumbnail_set_content*()
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* NOTE 2: 'playlist' and 'idx' are only required here for
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* on-demand thumbnail download support
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* (an annoyance...) */
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void gfx_thumbnail_request(
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gfx_thumbnail_path_data_t *path_data, enum gfx_thumbnail_id thumbnail_id,
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playlist_t *playlist, size_t idx, gfx_thumbnail_t *thumbnail,
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unsigned gfx_thumbnail_upscale_threshold,
|
|
bool network_on_demand_thumbnails);
|
|
|
|
/* Requests loading of a specific thumbnail image file
|
|
* (may be used, for example, to load savestate images)
|
|
* - If operation fails, 'thumbnail->status' will be set to
|
|
* MUI_THUMBNAIL_STATUS_MISSING
|
|
* - If operation is successful, 'thumbnail->status' will be
|
|
* set to MUI_THUMBNAIL_STATUS_PENDING
|
|
* 'thumbnail' will be populated with texture info/metadata
|
|
* once the image load is complete */
|
|
void gfx_thumbnail_request_file(
|
|
const char *file_path, gfx_thumbnail_t *thumbnail,
|
|
unsigned gfx_thumbnail_upscale_threshold);
|
|
|
|
/* Resets (and free()s the current texture of) the
|
|
* specified thumbnail */
|
|
void gfx_thumbnail_reset(gfx_thumbnail_t *thumbnail);
|
|
|
|
/* Advances an animated thumbnail (animated WebP / WebM) by at most one frame,
|
|
* if its frame duration has elapsed. Call once per frame, on the main
|
|
* thread, for every on-screen thumbnail. Non-animated thumbnails and
|
|
* non-WebP image types return immediately (single flag test), so this
|
|
* is safe and near-free to call for every thumbnail unconditionally. */
|
|
/* @current_time is the frame's monotonic timestamp, as sampled once
|
|
* per iteration by the runloop and handed to gfx_animation_update():
|
|
* this function reads no clock of its own, so every thumbnail
|
|
* advanced in a frame paces off one coherent 'now', and a harness can
|
|
* drive it with synthetic time. */
|
|
void gfx_thumbnail_animate(gfx_thumbnail_t *thumbnail,
|
|
retro_time_t current_time);
|
|
|
|
/* Stream processing */
|
|
|
|
/* Requests loading of the specified thumbnail via
|
|
* the stream interface
|
|
* - Must be called on each frame for the duration
|
|
* that specified thumbnail is on-screen
|
|
* - Actual load request is deferred by currently
|
|
* set stream delay
|
|
* - Function becomes a no-op once load request is
|
|
* made
|
|
* - Thumbnails loaded via this function must be
|
|
* deleted manually via gfx_thumbnail_reset()
|
|
* when they move off-screen
|
|
* NOTE 1: Must be called *after* gfx_thumbnail_set_system()
|
|
* and gfx_thumbnail_set_content*()
|
|
* NOTE 2: 'playlist' and 'idx' are only required here for
|
|
* on-demand thumbnail download support
|
|
* (an annoyance...)
|
|
* NOTE 3: This function is intended for use in situations
|
|
* where each menu entry has a *single* thumbnail.
|
|
* If each entry has two thumbnails, use
|
|
* gfx_thumbnail_request_streams() for improved
|
|
* performance */
|
|
void gfx_thumbnail_request_stream(
|
|
gfx_thumbnail_path_data_t *path_data,
|
|
gfx_animation_t *p_anim,
|
|
enum gfx_thumbnail_id thumbnail_id,
|
|
playlist_t *playlist, size_t idx,
|
|
gfx_thumbnail_t *thumbnail,
|
|
unsigned gfx_thumbnail_upscale_threshold,
|
|
bool network_on_demand_thumbnails);
|
|
|
|
/* Requests loading of the specified thumbnails via
|
|
* the stream interface
|
|
* - Must be called on each frame for the duration
|
|
* that specified thumbnails are on-screen
|
|
* - Actual load request is deferred by currently
|
|
* set stream delay
|
|
* - Function becomes a no-op once load request is
|
|
* made
|
|
* - Thumbnails loaded via this function must be
|
|
* deleted manually via gfx_thumbnail_reset()
|
|
* when they move off-screen
|
|
* NOTE 1: Must be called *after* gfx_thumbnail_set_system()
|
|
* and gfx_thumbnail_set_content*()
|
|
* NOTE 2: 'playlist' and 'idx' are only required here for
|
|
* on-demand thumbnail download support
|
|
* (an annoyance...)
|
|
* NOTE 3: This function is intended for use in situations
|
|
* where each menu entry has *two* thumbnails.
|
|
* If each entry only has a single thumbnail, use
|
|
* gfx_thumbnail_request_stream() for improved
|
|
* performance */
|
|
void gfx_thumbnail_request_streams(
|
|
gfx_thumbnail_path_data_t *path_data,
|
|
gfx_animation_t *p_anim,
|
|
playlist_t *playlist, size_t idx,
|
|
gfx_thumbnail_t *right_thumbnail,
|
|
gfx_thumbnail_t *left_thumbnail,
|
|
unsigned gfx_thumbnail_upscale_threshold,
|
|
bool network_on_demand_thumbnails);
|
|
|
|
/* Handles streaming of the specified thumbnail as it moves
|
|
* on/off screen
|
|
* - Must be called each frame for every on-screen entry
|
|
* - Must be called once for each entry as it moves off-screen
|
|
* (or can be called each frame - overheads are small)
|
|
* NOTE 1: Must be called *after* gfx_thumbnail_set_system()
|
|
* NOTE 2: This function calls gfx_thumbnail_set_content*()
|
|
* NOTE 3: This function is intended for use in situations
|
|
* where each menu entry has a *single* thumbnail.
|
|
* If each entry has two thumbnails, use
|
|
* gfx_thumbnail_process_streams() for improved
|
|
* performance */
|
|
void gfx_thumbnail_process_stream(
|
|
gfx_thumbnail_path_data_t *path_data,
|
|
gfx_animation_t *p_anim,
|
|
enum gfx_thumbnail_id thumbnail_id,
|
|
playlist_t *playlist, size_t idx,
|
|
gfx_thumbnail_t *thumbnail,
|
|
bool on_screen,
|
|
unsigned gfx_thumbnail_upscale_threshold,
|
|
bool network_on_demand_thumbnails);
|
|
|
|
/* Handles streaming of the specified thumbnails as they move
|
|
* on/off screen
|
|
* - Must be called each frame for every on-screen entry
|
|
* - Must be called once for each entry as it moves off-screen
|
|
* (or can be called each frame - overheads are small)
|
|
* NOTE 1: Must be called *after* gfx_thumbnail_set_system()
|
|
* NOTE 2: This function calls gfx_thumbnail_set_content*()
|
|
* NOTE 3: This function is intended for use in situations
|
|
* where each menu entry has *two* thumbnails.
|
|
* If each entry only has a single thumbnail, use
|
|
* gfx_thumbnail_process_stream() for improved
|
|
* performance */
|
|
void gfx_thumbnail_process_streams(
|
|
gfx_thumbnail_path_data_t *path_data,
|
|
gfx_animation_t *p_anim,
|
|
playlist_t *playlist, size_t idx,
|
|
gfx_thumbnail_t *right_thumbnail,
|
|
gfx_thumbnail_t *left_thumbnail,
|
|
bool on_screen,
|
|
unsigned gfx_thumbnail_upscale_threshold,
|
|
bool network_on_demand_thumbnails);
|
|
|
|
/* Thumbnail rendering */
|
|
|
|
/* Determines the actual screen dimensions of a
|
|
* thumbnail when centred with aspect correct
|
|
* scaling within a rectangle of (width x height) */
|
|
void gfx_thumbnail_get_draw_dimensions(
|
|
gfx_thumbnail_t *thumbnail,
|
|
unsigned width, unsigned height, float scale_factor,
|
|
float *draw_width, float *draw_height);
|
|
|
|
/* Draws specified thumbnail with specified alignment
|
|
* (and aspect correct scaling) within a rectangle of
|
|
* (width x height).
|
|
* 'shadow' defines an optional shadow effect (may be
|
|
* set to NULL if a shadow effect is not required).
|
|
* NOTE: Setting scale_factor > 1.0f will increase the
|
|
* size of the thumbnail beyond the limits of the
|
|
* (width x height) rectangle (alignment + aspect
|
|
* correct scaling is preserved). Use with caution */
|
|
void gfx_thumbnail_draw(
|
|
void *userdata,
|
|
unsigned video_width,
|
|
unsigned video_height,
|
|
gfx_thumbnail_t *thumbnail,
|
|
float x, float y, unsigned width, unsigned height,
|
|
enum gfx_thumbnail_alignment alignment,
|
|
float alpha, float scale_factor,
|
|
gfx_thumbnail_shadow_t *shadow);
|
|
|
|
gfx_thumbnail_state_t *gfx_thumb_get_ptr(void);
|
|
|
|
RETRO_END_DECLS
|
|
|
|
#endif
|