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move-transition.c
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#include "move-transition.h"
#include <obs-module.h>
#include <obs-frontend-api.h>
#include "graphics/math-defs.h"
#include "graphics/matrix4.h"
#include "easing.h"
#include <util/threading.h>
#include "obs-websocket-api.h"
struct move_info {
obs_source_t *source;
bool start_init;
bool first_frame;
DARRAY(struct move_item *) items_a;
DARRAY(struct move_item *) items_b;
float t;
float curve_move;
float curve_in;
float curve_out;
obs_source_t *scene_source_a;
obs_source_t *scene_source_b;
gs_samplerstate_t *point_sampler;
long long easing_move;
long long easing_in;
long long easing_out;
long long easing_function_move;
long long easing_function_in;
long long easing_function_out;
float zoom_in;
float zoom_out;
long long position_in;
long long position_out;
char *transition_move;
char *transition_in;
char *transition_out;
bool part_match;
bool number_match;
bool last_word_match;
enum obs_transition_scale_type transition_move_scale;
size_t item_pos;
uint32_t matched_items;
bool matched_scene_a;
bool matched_scene_b;
uint32_t item_order_switch_percentage;
bool nested_scenes;
bool cache_transitions;
DARRAY(obs_source_t *) transition_pool_move;
size_t transition_pool_move_index;
DARRAY(obs_source_t *) transition_pool_in;
size_t transition_pool_in_index;
DARRAY(obs_source_t *) transition_pool_out;
size_t transition_pool_out_index;
bool scene_flip_horizontal;
bool scene_flip_vertical;
};
struct move_item {
obs_sceneitem_t *item_a;
obs_sceneitem_t *item_b;
gs_texrender_t *item_render;
obs_source_t *transition;
long long easing;
long long easing_function;
float zoom;
long long position;
char *transition_name;
enum obs_transition_scale_type transition_scale;
float curve;
bool move_scene;
int start_percentage;
int end_percentage;
obs_scene_t *release_scene_a;
obs_scene_t *release_scene_b;
bool scene_flip_horizontal;
bool scene_flip_vertical;
struct matrix4 transform_a;
struct matrix4 transform_b;
struct obs_sceneitem_crop bounds_crop_a;
struct obs_sceneitem_crop bounds_crop_b;
};
static const struct {
enum gs_blend_type src_color;
enum gs_blend_type src_alpha;
enum gs_blend_type dst_color;
enum gs_blend_type dst_alpha;
enum gs_blend_op_type op;
} obs_blend_mode_params[] = {
/* clang-format off */
// OBS_BLEND_NORMAL
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_INVSRCALPHA,
GS_BLEND_INVSRCALPHA,
GS_BLEND_OP_ADD,
},
// OBS_BLEND_ADDITIVE
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_OP_ADD,
},
// OBS_BLEND_SUBTRACT
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_OP_REVERSE_SUBTRACT,
},
// OBS_BLEND_SCREEN
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_INVSRCCOLOR,
GS_BLEND_INVSRCALPHA,
GS_BLEND_OP_ADD
},
// OBS_BLEND_MULTIPLY
{
GS_BLEND_DSTCOLOR,
GS_BLEND_DSTALPHA,
GS_BLEND_INVSRCALPHA,
GS_BLEND_INVSRCALPHA,
GS_BLEND_OP_ADD
},
// OBS_BLEND_LIGHTEN
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_OP_MAX,
},
// OBS_BLEND_DARKEN
{
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_ONE,
GS_BLEND_OP_MIN,
},
/* clang-format on */
};
static const char *move_get_name(void *type_data)
{
UNUSED_PARAMETER(type_data);
return obs_module_text("Move");
}
static void *move_create(obs_data_t *settings, obs_source_t *source)
{
UNUSED_PARAMETER(settings);
struct move_info *move = bzalloc(sizeof(struct move_info));
move->source = source;
da_init(move->items_a);
da_init(move->items_b);
da_init(move->transition_pool_out);
da_init(move->transition_pool_in);
da_init(move->transition_pool_out);
obs_source_update(source, settings);
return move;
}
static void clear_items(struct move_info *move, bool in_graphics)
{
bool graphics = false;
for (size_t i = 0; i < move->items_a.num; i++) {
struct move_item *item = move->items_a.array[i];
if (item->item_render) {
if (!graphics && !in_graphics) {
obs_enter_graphics();
graphics = true;
}
gs_texrender_destroy(item->item_render);
item->item_render = NULL;
}
}
if (graphics)
obs_leave_graphics();
for (size_t i = 0; i < move->items_a.num; i++) {
struct move_item *item = move->items_a.array[i];
if (item->release_scene_a)
obs_scene_release(item->release_scene_a);
item->release_scene_a = NULL;
obs_sceneitem_release(item->item_a);
item->item_a = NULL;
if (item->release_scene_b)
obs_scene_release(item->release_scene_b);
item->release_scene_b = NULL;
obs_sceneitem_release(item->item_b);
item->item_b = NULL;
if (item->transition) {
obs_source_remove_active_child(move->source, item->transition);
obs_transition_force_stop(item->transition);
obs_transition_clear(item->transition);
obs_source_release(item->transition);
item->transition = NULL;
}
bfree(item->transition_name);
bfree(item);
}
move->items_a.num = 0;
move->items_b.num = 0;
}
void clear_transition_pool(void *data)
{
DARRAY(obs_source_t *) *transition_pool = data;
for (size_t i = 0; i < transition_pool->num; i++) {
obs_source_release(transition_pool->array[i]);
}
transition_pool->num = 0;
}
static void move_destroy(void *data)
{
struct move_info *move = data;
clear_items(move, false);
da_free(move->items_a);
da_free(move->items_b);
clear_transition_pool(&move->transition_pool_move);
da_free(move->transition_pool_move);
clear_transition_pool(&move->transition_pool_in);
da_free(move->transition_pool_in);
clear_transition_pool(&move->transition_pool_out);
da_free(move->transition_pool_out);
obs_source_release(move->scene_source_a);
obs_source_release(move->scene_source_b);
bfree(move->transition_in);
bfree(move->transition_out);
bfree(move->transition_move);
if (move->point_sampler) {
obs_enter_graphics();
gs_samplerstate_destroy(move->point_sampler);
obs_leave_graphics();
}
bfree(move);
}
static void move_update(void *data, obs_data_t *settings)
{
struct move_info *move = data;
move->easing_move = obs_data_get_int(settings, S_EASING_MATCH);
move->easing_in = obs_data_get_int(settings, S_EASING_IN);
move->easing_out = obs_data_get_int(settings, S_EASING_OUT);
move->easing_function_move = obs_data_get_int(settings, S_EASING_FUNCTION_MATCH);
move->easing_function_in = obs_data_get_int(settings, S_EASING_FUNCTION_IN);
move->easing_function_out = obs_data_get_int(settings, S_EASING_FUNCTION_OUT);
move->position_in = obs_data_get_int(settings, S_POSITION_IN);
obs_data_item_t *item = obs_data_item_byname(settings, S_ZOOM_IN);
if (obs_data_item_gettype(item) == OBS_DATA_BOOLEAN) {
obs_data_set_double(settings, S_ZOOM_IN, obs_data_get_bool(settings, S_ZOOM_IN) ? 0.0 : 100.0);
}
obs_data_item_release(&item);
move->zoom_in = (float)obs_data_get_double(settings, S_ZOOM_IN) / 100.0f;
move->position_out = obs_data_get_int(settings, S_POSITION_OUT);
item = obs_data_item_byname(settings, S_ZOOM_IN);
if (obs_data_item_gettype(item) == OBS_DATA_BOOLEAN) {
obs_data_set_double(settings, S_ZOOM_OUT, obs_data_get_bool(settings, S_ZOOM_OUT) ? 0.0 : 100.0);
}
obs_data_item_release(&item);
move->zoom_out = (float)obs_data_get_double(settings, S_ZOOM_OUT) / 100.0f;
move->curve_move = (float)obs_data_get_double(settings, S_CURVE_MATCH);
move->curve_in = (float)obs_data_get_double(settings, S_CURVE_IN);
move->curve_out = (float)obs_data_get_double(settings, S_CURVE_OUT);
bfree(move->transition_in);
move->transition_in = bstrdup(obs_data_get_string(settings, S_TRANSITION_IN));
if (move->transition_in && strlen(move->transition_in) && move->transition_pool_in.num &&
strcmp(obs_source_get_name(move->transition_pool_in.array[0]), move->transition_in) != 0) {
clear_transition_pool(&move->transition_pool_in);
}
bfree(move->transition_out);
move->transition_out = bstrdup(obs_data_get_string(settings, S_TRANSITION_OUT));
if (move->transition_out && strlen(move->transition_out) && move->transition_pool_out.num &&
strcmp(obs_source_get_name(move->transition_pool_out.array[0]), move->transition_out) != 0) {
clear_transition_pool(&move->transition_pool_out);
}
move->part_match = obs_data_get_bool(settings, S_NAME_PART_MATCH);
move->number_match = obs_data_get_bool(settings, S_NAME_NUMBER_MATCH);
move->last_word_match = obs_data_get_bool(settings, S_NAME_LAST_WORD_MATCH);
bfree(move->transition_move);
move->transition_move = bstrdup(obs_data_get_string(settings, S_TRANSITION_MATCH));
if (move->transition_move && strlen(move->transition_move) && move->transition_pool_move.num &&
strcmp(obs_source_get_name(move->transition_pool_move.array[0]), move->transition_move) != 0) {
clear_transition_pool(&move->transition_pool_move);
}
move->transition_move_scale = obs_data_get_int(settings, S_TRANSITION_SCALE);
move->item_order_switch_percentage = (uint32_t)obs_data_get_int(settings, S_SWITCH_PERCENTAGE);
move->cache_transitions = obs_data_get_bool(settings, S_CACHE_TRANSITIONS);
move->nested_scenes = obs_data_get_bool(settings, S_NESTED_SCENES);
}
void add_alignment(struct vec2 *v, uint32_t align, int32_t cx, int32_t cy)
{
if (align & OBS_ALIGN_RIGHT)
v->x += (float)cx;
else if ((align & OBS_ALIGN_LEFT) == 0)
v->x += (float)(cx >> 1);
if (align & OBS_ALIGN_BOTTOM)
v->y += (float)cy;
else if ((align & OBS_ALIGN_TOP) == 0)
v->y += (float)(cy >> 1);
}
void add_move_alignment(struct vec2 *v, uint32_t align_a, uint32_t align_b, float t, int32_t cx, int32_t cy)
{
if (align_a & OBS_ALIGN_RIGHT)
v->x += (float)cx * (1.0f - t);
else if ((align_a & OBS_ALIGN_LEFT) == 0)
v->x += (float)(cx >> 1) * (1.0f - t);
if (align_a & OBS_ALIGN_BOTTOM)
v->y += (float)cy * (1.0f - t);
else if ((align_a & OBS_ALIGN_TOP) == 0)
v->y += (float)(cy >> 1) * (1.0f - t);
if (align_b & OBS_ALIGN_RIGHT)
v->x += (float)cx * t;
else if ((align_b & OBS_ALIGN_LEFT) == 0)
v->x += (float)(cx >> 1) * t;
if (align_b & OBS_ALIGN_BOTTOM)
v->y += (float)cy * t;
else if ((align_b & OBS_ALIGN_TOP) == 0)
v->y += (float)(cy >> 1) * t;
}
static bool crop_to_bounds(const obs_sceneitem_t *item, enum obs_bounds_type bt)
{
if (bt != OBS_BOUNDS_SCALE_OUTER && bt != OBS_BOUNDS_SCALE_TO_HEIGHT && bt != OBS_BOUNDS_SCALE_TO_WIDTH)
return false;
#if LIBOBS_API_VER >= MAKE_SEMANTIC_VERSION(30, 1, 0)
return obs_sceneitem_get_bounds_crop(item);
#else
if (obs_get_version() < MAKE_SEMANTIC_VERSION(30, 1, 0))
return false;
obs_source_t *item_source = obs_sceneitem_get_source(item);
if (!item_source)
return false;
obs_scene_t *scene = obs_sceneitem_get_scene(item);
obs_source_t *scene_source = obs_scene_get_source(scene);
if (!scene_source)
return false;
obs_data_t *settings = obs_source_get_settings(scene_source);
obs_data_array_t *items = obs_data_get_array(settings, "items");
obs_data_release(settings);
if (!items)
return false;
size_t count = obs_data_array_count(items);
bool crop_to_bounds = false;
for (size_t i = 0; i < count; i++) {
obs_data_t *item_data = obs_data_array_item(items, i);
if (obs_sceneitem_get_id(item) == obs_data_get_int(item_data, "id") &&
strcmp(obs_data_get_string(item_data, "name"), obs_source_get_name(item_source)) == 0) {
crop_to_bounds = obs_data_get_bool(item_data, "bounds_crop");
obs_data_release(item_data);
break;
}
obs_data_release(item_data);
}
obs_data_array_release(items);
return crop_to_bounds;
#endif
}
static void calculate_bounds_data(struct obs_scene_item *item, struct vec2 *origin, struct vec2 *scale, int32_t *cx, int32_t *cy,
struct vec2 *bounds)
{
float width = (float)(*cx) * fabsf(scale->x);
float height = (float)(*cy) * fabsf(scale->y);
const float item_aspect = width / height;
const float bounds_aspect = bounds->x / bounds->y;
uint32_t bounds_type = obs_sceneitem_get_bounds_type(item);
if (bounds_type == OBS_BOUNDS_MAX_ONLY)
if (width > bounds->x || height > bounds->y)
bounds_type = OBS_BOUNDS_SCALE_INNER;
if (bounds_type == OBS_BOUNDS_SCALE_INNER || bounds_type == OBS_BOUNDS_SCALE_OUTER) {
bool use_width = (bounds_aspect < item_aspect);
if (bounds_type == OBS_BOUNDS_SCALE_OUTER)
use_width = !use_width;
const float mul = use_width ? bounds->x / width : bounds->y / height;
vec2_mulf(scale, scale, mul);
} else if (bounds_type == OBS_BOUNDS_SCALE_TO_WIDTH) {
vec2_mulf(scale, scale, bounds->x / width);
} else if (bounds_type == OBS_BOUNDS_SCALE_TO_HEIGHT) {
vec2_mulf(scale, scale, bounds->y / height);
} else if (bounds_type == OBS_BOUNDS_STRETCH) {
scale->x = copysignf(bounds->x / (float)(*cx), scale->x);
scale->y = copysignf(bounds->y / (float)(*cy), scale->y);
}
width = (float)(*cx) * scale->x;
height = (float)(*cy) * scale->y;
/* Disregards flip when calculating size diff */
const float width_diff = bounds->x - width;
const float height_diff = bounds->y - height;
*cx = (uint32_t)bounds->x;
*cy = (uint32_t)bounds->y;
add_alignment(origin, obs_sceneitem_get_bounds_alignment(item), (int32_t)-roundf(width_diff),
(int32_t)-roundf(height_diff));
/* Set cropping if enabled and large enough size difference exists */
if (crop_to_bounds(item, bounds_type) && (width_diff < -0.1 || height_diff < -0.1)) {
bool crop_width = width_diff < -0.1;
bool crop_flipped = crop_width ? width < 0.0f : height < 0.0f;
float crop_diff = crop_width ? width_diff : height_diff;
float crop_origin = crop_width ? origin->x : origin->y;
/* Only get alignment for relevant axis */
uint32_t crop_align_mask = crop_width ? OBS_ALIGN_LEFT | OBS_ALIGN_RIGHT : OBS_ALIGN_TOP | OBS_ALIGN_BOTTOM;
uint32_t crop_align = obs_sceneitem_get_bounds_alignment(item) & crop_align_mask;
if (crop_flipped) {
/* Adjust origin for flips */
if (crop_align == OBS_ALIGN_CENTER)
crop_origin *= 2;
else if (crop_align & (OBS_ALIGN_TOP | OBS_ALIGN_LEFT))
crop_origin -= crop_diff;
} else {
crop_origin = 0;
}
if (crop_width) {
origin->x = crop_origin;
} else {
origin->y = crop_origin;
}
}
/* Makes the item stay in-place in the box if flipped */
origin->x += (width < 0.0f) ? width : 0.0f;
origin->y += (height < 0.0f) ? height : 0.0f;
}
static void calculate_move_bounds_data(struct obs_scene_item *item_a, struct obs_scene_item *item_b, float t, struct vec2 *origin,
struct vec2 *scale, int32_t *cx, int32_t *cy, struct vec2 *bounds)
{
struct vec2 origin_a;
vec2_set(&origin_a, origin->x, origin->y);
struct vec2 origin_b;
vec2_set(&origin_b, origin->x, origin->y);
struct vec2 scale_a;
vec2_set(&scale_a, scale->x, scale->y);
struct vec2 scale_b;
vec2_set(&scale_b, scale->x, scale->y);
int32_t cxa = *cx;
int32_t cxb = *cx;
int32_t cya = *cy;
int32_t cyb = *cy;
calculate_bounds_data(item_a, &origin_a, &scale_a, &cxa, &cya, bounds);
calculate_bounds_data(item_b, &origin_b, &scale_b, &cxb, &cyb, bounds);
vec2_set(origin, origin_a.x * (1.0f - t) + origin_b.x * t, origin_a.y * (1.0f - t) + origin_b.y * t);
vec2_set(scale, scale_a.x * (1.0f - t) + scale_b.x * t, scale_a.y * (1.0f - t) + scale_b.y * t);
*cx = (int32_t)roundf((float)cxa * (1.0f - t) + (float)cxb * t);
*cy = (int32_t)roundf((float)cya * (1.0f - t) + (float)cyb * t);
}
static inline bool item_is_scene(struct obs_scene_item *item)
{
obs_source_t *source = obs_sceneitem_get_source(item);
return source && obs_source_get_type(source) == OBS_SOURCE_TYPE_SCENE;
}
static inline bool scale_filter_enabled(struct obs_scene_item *item)
{
return obs_sceneitem_get_scale_filter(item) != OBS_SCALE_DISABLE;
}
static inline bool crop_enabled(const struct obs_sceneitem_crop *crop)
{
return crop->left || crop->right || crop->top || crop->bottom;
}
static inline bool default_blending_enabled(struct obs_scene_item *item)
{
return obs_sceneitem_get_blending_mode(item) == OBS_BLEND_NORMAL;
}
static inline bool item_texture_enabled(struct obs_scene_item *item)
{
if (!item)
return false;
struct obs_sceneitem_crop crop;
obs_sceneitem_get_crop(item, &crop);
if (crop_enabled(&crop))
return true;
if (item_is_scene(item) && !obs_sceneitem_is_group(item))
return true;
if (scale_filter_enabled(item) || !default_blending_enabled(item))
return true;
if (crop_to_bounds(item, obs_sceneitem_get_bounds_type(item)))
return true;
return false;
}
void pos_add_center(struct vec2 *pos, uint32_t alignment, uint32_t cx, uint32_t cy)
{
if (alignment & OBS_ALIGN_LEFT) {
pos->x -= cx >> 1;
} else if (alignment & OBS_ALIGN_RIGHT) {
pos->x += cx >> 1;
}
if (alignment & OBS_ALIGN_TOP) {
pos->y -= cy >> 1;
} else if (alignment & OBS_ALIGN_BOTTOM) {
pos->y += cy >> 1;
}
}
void pos_subtract_center(struct vec2 *pos, uint32_t alignment, int32_t cx, int32_t cy)
{
if (alignment & OBS_ALIGN_LEFT) {
pos->x += cx >> 1;
} else if (alignment & OBS_ALIGN_RIGHT) {
pos->x -= cx >> 1;
}
if (alignment & OBS_ALIGN_TOP) {
pos->y += cy >> 1;
} else if (alignment & OBS_ALIGN_BOTTOM) {
pos->y -= cy >> 1;
}
}
void calc_edge_position(struct vec2 *pos, long long position, uint32_t canvas_width, uint32_t canvas_height, uint32_t alignment,
int32_t cx, int32_t cy, float zoom)
{
int32_t cx2 = abs(cx >> 1);
int32_t cy2 = abs(cy >> 1);
if (zoom != 1.0f) {
cx2 = (int32_t)fabs((float)cx * zoom / 2.0f);
cy2 = (int32_t)fabs((float)cy * zoom / 2.0f);
}
if (position - POS_EDGE == 0) {
if (alignment & OBS_ALIGN_LEFT) {
pos->x += cx >> 1;
} else if (alignment & OBS_ALIGN_RIGHT) {
pos->x -= cx >> 1;
}
if (alignment & OBS_ALIGN_TOP) {
pos->y += cy >> 1;
} else if (alignment & OBS_ALIGN_BOTTOM) {
pos->y -= cy >> 1;
}
// pos is center of object
float diff_x = pos->x - (canvas_width >> 1);
float diff_y = pos->y - (canvas_height >> 1);
float factor_x = fabsf(diff_x) / (canvas_width >> 1);
float factor_y = fabsf(diff_y) / (canvas_height >> 1);
if (diff_x == 0.0f && diff_y == 0.0f) {
diff_y = 1.0f;
}
if (factor_x > factor_y) {
if (diff_x < 0.0f) {
//left edge
const float move_x = -(pos->x + cx2);
const float move_y = diff_y * (diff_x + move_x) / diff_x;
vec2_set(pos, -(float)cx2, (float)(canvas_height >> 1) + move_y);
} else {
//right edge
const float move_x = (canvas_width - pos->x) + cx2;
const float move_y = diff_y * (diff_x + move_x) / diff_x;
vec2_set(pos, (float)canvas_width + cx2, (float)(canvas_height >> 1) + move_y);
}
} else {
if (diff_y < 0.0f) {
//top edge
const float move_y = -(pos->y + cy2);
const float move_x = diff_x * (diff_y + move_y) / diff_y;
vec2_set(pos, (float)(canvas_width >> 1) + move_x, -(float)cy2);
} else {
//bottom edge
const float move_y = (canvas_height - pos->y) + cy2;
const float move_x = diff_x * (diff_y + move_y) / diff_y;
vec2_set(pos, (float)(canvas_width >> 1) + move_x, (float)canvas_height + cy2);
}
}
if (alignment & OBS_ALIGN_LEFT) {
if (cx < 0) {
pos->x += cx2;
} else {
pos->x -= cx2;
}
} else if (alignment & OBS_ALIGN_RIGHT) {
if (cx < 0) {
pos->x -= cx2;
} else {
pos->x += cx2;
}
}
if (alignment & OBS_ALIGN_TOP) {
if (cy < 0) {
pos->y += cy2;
} else {
pos->y -= cy2;
}
} else if (alignment & OBS_ALIGN_BOTTOM) {
if (cy < 0) {
pos->y -= cy2;
} else {
pos->y += cy2;
}
}
return;
}
if (zoom != 1.0f) {
cx = (int32_t)((float)cx * zoom);
cy = (int32_t)((float)cy * zoom);
}
if (position & POS_EDGE)
vec2_set(pos, 0, 0);
if (position & POS_RIGHT) {
pos->x = (float)canvas_width;
if (alignment & OBS_ALIGN_RIGHT) {
pos->x += cx;
} else if (alignment & OBS_ALIGN_LEFT) {
} else {
pos->x += cx2;
}
} else if (position & POS_LEFT) {
pos->x = 0;
if (alignment & OBS_ALIGN_RIGHT) {
} else if (alignment & OBS_ALIGN_LEFT) {
pos->x -= cx;
} else {
pos->x -= cx2;
}
} else if (position & POS_EDGE) {
pos->x = (float)(canvas_width >> 1);
if (alignment & OBS_ALIGN_RIGHT) {
pos->x += cx2;
} else if (alignment & OBS_ALIGN_LEFT) {
pos->x -= cx2;
}
}
if (position & POS_BOTTOM) {
pos->y = (float)canvas_height;
if (alignment & OBS_ALIGN_TOP) {
} else if (alignment & OBS_ALIGN_BOTTOM) {
pos->y += cy;
} else {
pos->y += cy2;
}
} else if (position & POS_TOP) {
pos->y = 0;
if (alignment & OBS_ALIGN_BOTTOM) {
} else if (alignment & OBS_ALIGN_TOP) {
pos->y -= cy;
} else {
pos->y -= cy2;
}
} else if (position & POS_EDGE) {
pos->y = (float)(canvas_height >> 1);
if (alignment & OBS_ALIGN_TOP) {
pos->y -= cy2;
} else if (alignment & OBS_ALIGN_BOTTOM) {
pos->y += cy2;
}
}
}
float bezier(float point[], float t, int order)
{
const float p = 1.0f - t;
if (order < 1)
return point[0];
if (order == 1)
return p * point[0] + t * point[1];
return p * bezier(point, t, order - 1) + t * bezier(&point[1], t, order - 1);
}
void vec2_bezier(struct vec2 *dst, struct vec2 *begin, struct vec2 *control, struct vec2 *end, const float t)
{
float x[3] = {begin->x, control->x, end->x};
float y[3] = {begin->y, control->y, end->y};
dst->x = bezier(x, t, 2);
dst->y = bezier(y, t, 2);
}
static obs_source_t *obs_frontend_get_transition(const char *name)
{
if (!name)
return NULL;
struct obs_frontend_source_list transitions = {0};
obs_frontend_get_transitions(&transitions);
for (size_t i = 0; i < transitions.sources.num; i++) {
const char *n = obs_source_get_name(transitions.sources.array[i]);
if (n && strcmp(n, name) == 0) {
obs_source_t *transition = obs_source_get_ref(transitions.sources.array[i]);
obs_frontend_source_list_free(&transitions);
return transition;
}
}
obs_frontend_source_list_free(&transitions);
return NULL;
}
float get_eased(float f, long long easing, long long easing_function)
{
float t = f;
if (EASE_NONE == easing) {
} else if (EASE_IN == easing) {
switch (easing_function) {
case EASING_QUADRATIC:
t = QuadraticEaseIn(f);
break;
case EASING_CUBIC:
t = CubicEaseIn(f);
break;
case EASING_QUARTIC:
t = QuarticEaseIn(f);
break;
case EASING_QUINTIC:
t = QuinticEaseIn(f);
break;
case EASING_SINE:
t = SineEaseIn(f);
break;
case EASING_CIRCULAR:
t = CircularEaseIn(f);
break;
case EASING_EXPONENTIAL:
t = ExponentialEaseIn(f);
break;
case EASING_ELASTIC:
t = ElasticEaseIn(f);
break;
case EASING_BOUNCE:
t = BounceEaseIn(f);
break;
case EASING_BACK:
t = BackEaseIn(f);
break;
default:;
}
} else if (EASE_OUT == easing) {
switch (easing_function) {
case EASING_QUADRATIC:
t = QuadraticEaseOut(f);
break;
case EASING_CUBIC:
t = CubicEaseOut(f);
break;
case EASING_QUARTIC:
t = QuarticEaseOut(f);
break;
case EASING_QUINTIC:
t = QuinticEaseOut(f);
break;
case EASING_SINE:
t = SineEaseOut(f);
break;
case EASING_CIRCULAR:
t = CircularEaseOut(f);
break;
case EASING_EXPONENTIAL:
t = ExponentialEaseOut(f);
break;
case EASING_ELASTIC:
t = ElasticEaseOut(f);
break;
case EASING_BOUNCE:
t = BounceEaseOut(f);
break;
case EASING_BACK:
t = BackEaseOut(f);
break;
default:;
}
} else if (EASE_IN_OUT == easing) {
switch (easing_function) {
case EASING_QUADRATIC:
t = QuadraticEaseInOut(f);
break;
case EASING_CUBIC:
t = CubicEaseInOut(f);
break;
case EASING_QUARTIC:
t = QuarticEaseInOut(f);
break;
case EASING_QUINTIC:
t = QuinticEaseInOut(f);
break;
case EASING_SINE:
t = SineEaseInOut(f);
break;
case EASING_CIRCULAR:
t = CircularEaseInOut(f);
break;
case EASING_EXPONENTIAL:
t = ExponentialEaseInOut(f);
break;
case EASING_ELASTIC:
t = ElasticEaseInOut(f);
break;
case EASING_BOUNCE:
t = BounceEaseInOut(f);
break;
case EASING_BACK:
t = BackEaseInOut(f);
break;
default:;
}
}
return t;
}
obs_source_t *get_transition(const char *transition_name, void *pool_data, size_t *index, bool cache)
{
if (!transition_name || strlen(transition_name) == 0 || strcmp(transition_name, "None") == 0)
return NULL;
DARRAY(obs_source_t *) *transition_pool = pool_data;
const size_t i = *index;
if (cache && transition_pool->num && *index < transition_pool->num) {
obs_source_t *transition = obs_source_get_ref(transition_pool->array[i]);
*index = i + 1;
return transition;
}
obs_source_t *frontend_transition = obs_frontend_get_transition(transition_name);
if (!frontend_transition)
return NULL;
obs_source_t *transition = obs_source_duplicate(frontend_transition, transition_name, true);
obs_source_release(frontend_transition);
if (cache) {
transition = obs_source_get_ref(transition);
darray_push_back(sizeof(obs_source_t *), &transition_pool->da, &transition);
*index = i + 1;
}
return transition;
}
float rot_diff(float rot_a, float rot_b)
{
float diff = rot_b - rot_a;
while (diff < -180.0f)
diff += 360.0f;
while (diff > 180.0f)
diff -= 360.0f;
return diff;
}
static void calculate_bounds_item(const obs_sceneitem_t *item, struct vec2 *origin, struct vec2 *scale, uint32_t *cx, uint32_t *cy,
float *calc_width, float *calc_height, struct obs_sceneitem_crop *bounds_crop,
enum obs_bounds_type bt)
{
float width = (float)(*cx) * fabsf(scale->x);
float height = (float)(*cy) * fabsf(scale->y);
float item_aspect = width / height;
struct vec2 bounds;
obs_sceneitem_get_bounds(item, &bounds);
float bounds_aspect = bounds.x / bounds.y;
float width_diff, height_diff;
if (bt == OBS_BOUNDS_MAX_ONLY)
if (width > bounds.x || height > bounds.y)
bt = OBS_BOUNDS_SCALE_INNER;
if (bt == OBS_BOUNDS_SCALE_INNER || bt == OBS_BOUNDS_SCALE_OUTER) {
bool use_width = (bounds_aspect < item_aspect);
float mul;
if (bt == OBS_BOUNDS_SCALE_OUTER)
use_width = !use_width;
mul = use_width ? bounds.x / width : bounds.y / height;
vec2_mulf(scale, scale, mul);
} else if (bt == OBS_BOUNDS_SCALE_TO_WIDTH) {
vec2_mulf(scale, scale, bounds.x / width);
} else if (bt == OBS_BOUNDS_SCALE_TO_HEIGHT) {
vec2_mulf(scale, scale, bounds.y / height);
} else if (bt == OBS_BOUNDS_STRETCH) {
scale->x = copysignf(bounds.x / (float)(*cx), scale->x);
scale->y = copysignf(bounds.y / (float)(*cy), scale->y);
}
width = (float)(*cx) * scale->x;
height = (float)(*cy) * scale->y;
*calc_width = fabsf(width);
*calc_height = fabsf(height);
/* Disregards flip when calculating size diff */
width_diff = bounds.x - *calc_width;
height_diff = bounds.y - *calc_height;
*cx = (uint32_t)bounds.x;
*cy = (uint32_t)bounds.y;
add_alignment(origin, obs_sceneitem_get_bounds_alignment(item), (int)-width_diff, (int)-height_diff);
/* Set cropping if enabled and large enough size difference exists */
if (crop_to_bounds(item, bt) && (width_diff < -0.1 || height_diff < -0.1)) {
bool crop_width = width_diff < -0.1;
bool crop_flipped = crop_width ? width < 0.0f : height < 0.0f;
float crop_diff = crop_width ? width_diff : height_diff;
float crop_scale = crop_width ? scale->x : scale->y;
float crop_origin = crop_width ? origin->x : origin->y;
/* Only get alignment for relevant axis */
uint32_t crop_align_mask = crop_width ? OBS_ALIGN_LEFT | OBS_ALIGN_RIGHT : OBS_ALIGN_TOP | OBS_ALIGN_BOTTOM;
uint32_t crop_align = obs_sceneitem_get_bounds_alignment(item) & crop_align_mask;
/* Cropping values need to scaled to input source */
float overdraw = fabsf(crop_diff / crop_scale);
/* tl = top / left, br = bottom / right */
float overdraw_tl;
if (crop_align & (OBS_ALIGN_TOP | OBS_ALIGN_LEFT))
overdraw_tl = 0;
else if (crop_align & (OBS_ALIGN_BOTTOM | OBS_ALIGN_RIGHT))
overdraw_tl = overdraw;
else
overdraw_tl = overdraw / 2;
float overdraw_br = overdraw - overdraw_tl;
int crop_br, crop_tl;
if (crop_flipped) {
/* Adjust origin for flips */
if (crop_align == OBS_ALIGN_CENTER)
crop_origin *= 2;
else if (crop_align & (OBS_ALIGN_TOP | OBS_ALIGN_LEFT))
crop_origin -= crop_diff;
/* Note that crops are swapped if the axis is flipped */
crop_br = (int)roundf(overdraw_tl);
crop_tl = (int)roundf(overdraw_br);
} else {
crop_origin = 0;
crop_br = (int)roundf(overdraw_br);
crop_tl = (int)roundf(overdraw_tl);
}
if (crop_width) {
bounds_crop->right = crop_br;
bounds_crop->left = crop_tl;
origin->x = crop_origin;
} else {
bounds_crop->bottom = crop_br;
bounds_crop->top = crop_tl;
origin->y = crop_origin;
}
}
/* Makes the item stay in-place in the box if flipped */
origin->x += (width < 0.0f) ? width : 0.0f;
origin->y += (height < 0.0f) ? height : 0.0f;
}
void move_get_draw_transform(const obs_sceneitem_t *item, bool flip_horizontal, bool flip_vertical, struct matrix4 *transform,
struct obs_sceneitem_crop *bounds_crop)
{
uint32_t width = obs_source_get_width(obs_sceneitem_get_source(item));
uint32_t height = obs_source_get_height(obs_sceneitem_get_source(item));
uint32_t cx = width;
uint32_t cy = height;
struct vec2 origin;
struct vec2 scale;
obs_sceneitem_get_scale(item, &scale);
struct vec2 scale2;
obs_sceneitem_get_scale(item, &scale2);
//vec2_zero(&base_origin);
vec2_zero(&origin);
struct obs_sceneitem_crop crop;
obs_sceneitem_get_crop(item, &crop);