static void stinger_video_render(void *data, gs_effect_t *effect)
{
struct stinger_info *s = data;
float t = obs_transition_get_time(s->source);
bool use_a = t < s->transition_point;
enum obs_transition_target target = use_a
? OBS_TRANSITION_SOURCE_A
: OBS_TRANSITION_SOURCE_B;
if (!obs_transition_video_render_direct(s->source, target))
return;
/* --------------------- */
float source_cx = (float)obs_source_get_width(s->source);
float source_cy = (float)obs_source_get_height(s->source);
uint32_t media_cx = obs_source_get_width(s->media_source);
uint32_t media_cy = obs_source_get_height(s->media_source);
if (!media_cx || !media_cy)
return;
float scale_x = source_cx / (float)media_cx;
float scale_y = source_cy / (float)media_cy;
gs_matrix_push();
gs_matrix_scale3f(scale_x, scale_y, 1.0f);
obs_source_video_render(s->media_source);
gs_matrix_pop();
UNUSED_PARAMETER(effect);
}
void OBSBasicTransform::OnControlChanged()
{
if (ignoreItemChange)
return;
obs_source_t *source = obs_sceneitem_get_source(item);
double width = double(obs_source_get_width(source));
double height = double(obs_source_get_height(source));
obs_transform_info oti;
oti.pos.x = float(ui->positionX->value());
oti.pos.y = float(ui->positionY->value());
oti.rot = float(ui->rotation->value());
oti.scale.x = float(ui->sizeX->value() / width);
oti.scale.y = float(ui->sizeY->value() / height);
oti.alignment = listToAlign[ui->align->currentIndex()];
oti.bounds_type = (obs_bounds_type)ui->boundsType->currentIndex();
oti.bounds_alignment = listToAlign[ui->boundsAlign->currentIndex()];
oti.bounds.x = float(ui->boundsWidth->value());
oti.bounds.y = float(ui->boundsHeight->value());
ignoreTransformSignal = true;
obs_sceneitem_set_info(item, &oti);
ignoreTransformSignal = false;
}
void OBSBasicTransform::OnBoundsType(int index)
{
if (index == -1)
return;
obs_bounds_type type = (obs_bounds_type)index;
bool enable = (type != OBS_BOUNDS_NONE);
ui->boundsAlign->setEnabled(enable);
ui->boundsWidth->setEnabled(enable);
ui->boundsHeight->setEnabled(enable);
if (!ignoreItemChange) {
obs_bounds_type lastType = obs_sceneitem_get_bounds_type(item);
if (lastType == OBS_BOUNDS_NONE) {
OBSSource source = obs_sceneitem_get_source(item);
int width = (int)obs_source_get_width(source);
int height = (int)obs_source_get_height(source);
ui->boundsWidth->setValue(width);
ui->boundsHeight->setValue(height);
}
}
OnControlChanged();
}
void OBSBasicTransform::RefreshControls()
{
if (!item)
return;
obs_transform_info osi;
obs_sceneitem_get_info(item, &osi);
obs_source_t *source = obs_sceneitem_get_source(item);
float width = float(obs_source_get_width(source));
float height = float(obs_source_get_height(source));
int alignIndex = AlignToList(osi.alignment);
int boundsAlignIndex = AlignToList(osi.bounds_alignment);
ignoreItemChange = true;
ui->positionX->setValue(osi.pos.x);
ui->positionY->setValue(osi.pos.y);
ui->rotation->setValue(osi.rot);
ui->sizeX->setValue(osi.scale.x * width);
ui->sizeY->setValue(osi.scale.y * height);
ui->align->setCurrentIndex(alignIndex);
ui->boundsType->setCurrentIndex(int(osi.bounds_type));
ui->boundsAlign->setCurrentIndex(boundsAlignIndex);
ui->boundsWidth->setValue(osi.bounds.x);
ui->boundsHeight->setValue(osi.bounds.y);
ignoreItemChange = false;
}
static inline void render_item(struct obs_scene_item *item)
{
if (item->crop_render) {
uint32_t width = obs_source_get_width(item->source);
uint32_t height = obs_source_get_height(item->source);
uint32_t cx = calc_cx(item, width);
uint32_t cy = calc_cy(item, height);
if (cx && cy && gs_texrender_begin(item->crop_render, cx, cy)) {
float cx_scale = (float)width / (float)cx;
float cy_scale = (float)height / (float)cy;
gs_matrix_scale3f(cx_scale, cy_scale, 1.0f);
gs_matrix_translate3f(
-(float)item->crop.left,
-(float)item->crop.top,
0.0f);
obs_source_video_render(item->source);
gs_texrender_end(item->crop_render);
}
}
gs_matrix_push();
gs_matrix_mul(&item->draw_transform);
if (item->crop_render) {
gs_texture_t *tex = gs_texrender_get_texture(item->crop_render);
while (gs_effect_loop(obs->video.default_effect, "Draw"))
obs_source_draw(tex, 0, 0, 0, 0, 0);
} else {
obs_source_video_render(item->source);
}
gs_matrix_pop();
}
static inline bool source_size_changed(struct obs_scene_item *item)
{
uint32_t width = obs_source_get_width(item->source);
uint32_t height = obs_source_get_height(item->source);
return item->last_width != width || item->last_height != height;
}
void OBSProjector::OBSRender(void *data, uint32_t cx, uint32_t cy)
{
OBSProjector *window = reinterpret_cast<OBSProjector*>(data);
if (!window->ready)
return;
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSSource source = window->source;
uint32_t targetCX;
uint32_t targetCY;
int x, y;
int newCX, newCY;
float scale;
if (source) {
targetCX = std::max(obs_source_get_width(source), 1u);
targetCY = std::max(obs_source_get_height(source), 1u);
} else {
struct obs_video_info ovi;
obs_get_video_info(&ovi);
targetCX = ovi.base_width;
targetCY = ovi.base_height;
}
GetScaleAndCenterPos(targetCX, targetCY, cx, cy, x, y, scale);
newCX = int(scale * float(targetCX));
newCY = int(scale * float(targetCY));
startRegion(x, y, newCX, newCY, 0.0f, float(targetCX), 0.0f,
float(targetCY));
if (window->type == ProjectorType::Preview &&
main->IsPreviewProgramMode()) {
OBSSource curSource = main->GetCurrentSceneSource();
if (source != curSource) {
obs_source_dec_showing(source);
obs_source_inc_showing(curSource);
source = curSource;
window->source = source;
}
}
if (source)
obs_source_video_render(source);
else
obs_render_main_texture();
endRegion();
}
/**
Takes an OBS source and generates a JSON encoded string representing information about the source.
@param source is the OBS source that we want to turn into json data
@return json encoded string
*/
const char* obsSourceToJSON(obs_source_t *source)
{
const char *name = obs_source_get_name(source);
json_t *obj = json_object();
json_object_set_new(obj, "name", json_string(name));
json_object_set_new(obj, "width", json_integer(obs_source_get_width(source)));
json_object_set_new(obj, "height", json_integer(obs_source_get_height(source)));
const char *jsonString = json_dumps(obj, 0);
free(obj);
return jsonString;
}
static void recalculate_transition_size(obs_source_t *transition)
{
uint32_t cx = 0, cy = 0;
obs_source_t *child;
lock_transition(transition);
for (size_t i = 0; i < 2; i++) {
child = transition->transition_sources[i];
if (child) {
uint32_t new_cx = obs_source_get_width(child);
uint32_t new_cy = obs_source_get_height(child);
if (new_cx > cx) cx = new_cx;
if (new_cy > cy) cy = new_cy;
}
}
unlock_transition(transition);
transition->transition_actual_cx = cx;
transition->transition_actual_cy = cy;
}
static void sharpness_render(void *data, gs_effect_t *effect)
{
struct sharpness_data *filter = data;
if (!filter) return;
if (!obs_filter_get_target(filter->context)) return;
obs_source_process_filter_begin(filter->context, GS_RGBA,
OBS_ALLOW_DIRECT_RENDERING);
filter->texwidth =(float)obs_source_get_width(
obs_filter_get_target(filter->context));
filter->texheight = (float)obs_source_get_height(
obs_filter_get_target(filter->context));
gs_effect_set_float(filter->sharpness_param, filter->sharpness);
gs_effect_set_float(filter->texture_width, filter->texwidth);
gs_effect_set_float(filter->texture_height, filter->texheight);
obs_source_process_filter_end(filter->context, filter->effect, 0, 0);
UNUSED_PARAMETER(effect);
}
void OBSProjector::OBSRender(void *data, uint32_t cx, uint32_t cy)
{
OBSProjector *window = reinterpret_cast<OBSProjector*>(data);
uint32_t targetCX;
uint32_t targetCY;
int x, y;
int newCX, newCY;
float scale;
if (window->source) {
targetCX = std::max(obs_source_get_width(window->source), 1u);
targetCY = std::max(obs_source_get_height(window->source), 1u);
} else {
struct obs_video_info ovi;
obs_get_video_info(&ovi);
targetCX = ovi.base_width;
targetCY = ovi.base_height;
}
GetScaleAndCenterPos(targetCX, targetCY, cx, cy, x, y, scale);
newCX = int(scale * float(targetCX));
newCY = int(scale * float(targetCY));
gs_viewport_push();
gs_projection_push();
gs_ortho(0.0f, float(targetCX), 0.0f, float(targetCY), -100.0f, 100.0f);
gs_set_viewport(x, y, newCX, newCY);
if (window->source)
obs_source_video_render(window->source);
else
obs_render_main_view();
gs_projection_pop();
gs_viewport_pop();
}
static inline void render_item(struct obs_scene_item *item)
{
if (item->item_render) {
uint32_t width = obs_source_get_width(item->source);
uint32_t height = obs_source_get_height(item->source);
uint32_t cx = calc_cx(item, width);
uint32_t cy = calc_cy(item, height);
if (cx && cy && gs_texrender_begin(item->item_render, cx, cy)) {
float cx_scale = (float)width / (float)cx;
float cy_scale = (float)height / (float)cy;
struct vec4 clear_color;
vec4_zero(&clear_color);
gs_clear(GS_CLEAR_COLOR, &clear_color, 0.0f, 0);
gs_ortho(0.0f, (float)width, 0.0f, (float)height,
-100.0f, 100.0f);
gs_matrix_scale3f(cx_scale, cy_scale, 1.0f);
gs_matrix_translate3f(
-(float)item->crop.left,
-(float)item->crop.top,
0.0f);
obs_source_video_render(item->source);
gs_texrender_end(item->item_render);
}
}
gs_matrix_push();
gs_matrix_mul(&item->draw_transform);
if (item->item_render) {
render_item_texture(item);
} else {
obs_source_video_render(item->source);
}
gs_matrix_pop();
}
void OBSProjector::OBSRenderMultiview(void *data, uint32_t cx, uint32_t cy)
{
OBSProjector *window = (OBSProjector *)data;
if (updatingMultiview || !window->ready)
return;
OBSBasic *main = (OBSBasic *)obs_frontend_get_main_window();
uint32_t targetCX, targetCY;
int x, y;
float scale;
targetCX = (uint32_t)window->fw;
targetCY = (uint32_t)window->fh;
GetScaleAndCenterPos(targetCX, targetCY, cx, cy, x, y, scale);
OBSSource previewSrc = main->GetCurrentSceneSource();
OBSSource programSrc = main->GetProgramSource();
bool studioMode = main->IsPreviewProgramMode();
auto renderVB = [&](gs_vertbuffer_t *vb, int cx, int cy,
uint32_t colorVal)
{
if (!vb)
return;
matrix4 transform;
matrix4_identity(&transform);
transform.x.x = cx;
transform.y.y = cy;
gs_load_vertexbuffer(vb);
gs_matrix_push();
gs_matrix_mul(&transform);
gs_effect_set_color(window->color, colorVal);
while (gs_effect_loop(window->solid, "Solid"))
gs_draw(GS_LINESTRIP, 0, 0);
gs_matrix_pop();
};
auto drawBox = [&](float cx, float cy, uint32_t colorVal)
{
gs_effect_set_color(window->color, colorVal);
while (gs_effect_loop(window->solid, "Solid"))
gs_draw_sprite(nullptr, 0, (uint32_t)cx, (uint32_t)cy);
};
auto setRegion = [&](float bx, float by, float cx,
float cy)
{
float vX = int(x + bx * scale);
float vY = int(y + by * scale);
float vCX = int(cx * scale);
float vCY = int(cy * scale);
float oL = bx;
float oT = by;
float oR = (bx + cx);
float oB = (by + cy);
startRegion(vX, vY, vCX, vCY, oL, oR, oT, oB);
};
auto calcBaseSource = [&](size_t i)
{
switch (multiviewLayout) {
case MultiviewLayout::HORIZONTAL_TOP_24_SCENES:
window->sourceX = (i % 6) * window->scenesCX;
window->sourceY = window->pvwprgCY +
(i / 6) * window->scenesCY;
break;
case MultiviewLayout::VERTICAL_LEFT_8_SCENES:
window->sourceX = window->pvwprgCX;
window->sourceY = (i / 2 ) * window->scenesCY;
if (i % 2 != 0)
window->sourceX += window->scenesCX;
break;
case MultiviewLayout::VERTICAL_RIGHT_8_SCENES:
window->sourceX = 0;
window->sourceY = (i / 2 ) * window->scenesCY;
if (i % 2 != 0)
window->sourceX = window->scenesCX;
break;
case MultiviewLayout::HORIZONTAL_BOTTOM_8_SCENES:
if (i < 4) {
window->sourceX = (float(i) * window->scenesCX);
window->sourceY = 0;
} else {
window->sourceX = (float(i - 4) *
window->scenesCX);
window->sourceY = window->scenesCY;
}
break;
default: // MultiviewLayout::HORIZONTAL_TOP_8_SCENES:
if (i < 4) {
window->sourceX = (float(i) * window->scenesCX);
window->sourceY = window->pvwprgCY;
} else {
window->sourceX = (float(i - 4) *
window->scenesCX);
window->sourceY = window->pvwprgCY +
window->scenesCY;
}
}
window->siX = window->sourceX + window->thickness;
window->siY = window->sourceY + window->thickness;
};
auto calcPreviewProgram = [&](bool program)
{
switch (multiviewLayout) {
case MultiviewLayout::HORIZONTAL_TOP_24_SCENES:
window->sourceX = window->thickness +
window->pvwprgCX / 2;
window->sourceY = window->thickness;
window->labelX = window->offset + window->pvwprgCX / 2;
window->labelY = window->pvwprgCY * 0.85f;
if (program) {
window->sourceX += window->pvwprgCX;
window->labelX += window->pvwprgCX;
}
break;
case MultiviewLayout::VERTICAL_LEFT_8_SCENES:
window->sourceX = window->thickness;
window->sourceY = window->pvwprgCY + window->thickness;
window->labelX = window->offset;
window->labelY = window->pvwprgCY * 1.85f;
if (program) {
window->sourceY = window->thickness;
window->labelY = window->pvwprgCY * 0.85f;
}
break;
case MultiviewLayout::VERTICAL_RIGHT_8_SCENES:
window->sourceX = window->pvwprgCX + window->thickness;
window->sourceY = window->pvwprgCY + window->thickness;
window->labelX = window->pvwprgCX + window->offset;
window->labelY = window->pvwprgCY * 1.85f;
if (program) {
window->sourceY = window->thickness;
window->labelY = window->pvwprgCY * 0.85f;
}
break;
case MultiviewLayout::HORIZONTAL_BOTTOM_8_SCENES:
window->sourceX = window->thickness;
window->sourceY = window->pvwprgCY + window->thickness;
window->labelX = window->offset;
window->labelY = window->pvwprgCY * 1.85f;
if (program) {
window->sourceX += window->pvwprgCX;
window->labelX += window->pvwprgCX;
}
break;
default: // MultiviewLayout::HORIZONTAL_TOP_8_SCENES:
window->sourceX = window->thickness;
window->sourceY = window->thickness;
window->labelX = window->offset;
window->labelY = window->pvwprgCY * 0.85f;
if (program) {
window->sourceX += window->pvwprgCX;
window->labelX += window->pvwprgCX;
}
}
};
auto paintAreaWithColor = [&](float tx, float ty, float cx, float cy,
uint32_t color)
{
gs_matrix_push();
gs_matrix_translate3f(tx, ty, 0.0f);
drawBox(cx, cy, color);
gs_matrix_pop();
};
// Define the whole usable region for the multiview
startRegion(x, y, targetCX * scale, targetCY * scale, 0.0f, window->fw,
0.0f, window->fh);
// Change the background color to highlight all sources
drawBox(window->fw, window->fh, outerColor);
/* ----------------------------- */
/* draw sources */
for (size_t i = 0; i < maxSrcs; i++) {
// Handle all the offsets
calcBaseSource(i);
if (i >= numSrcs) {
// Just paint the background and continue
paintAreaWithColor(window->sourceX, window->sourceY,
window->scenesCX, window->scenesCY,
outerColor);
paintAreaWithColor(window->siX, window->siY,
window->siCX, window->siCY,
backgroundColor);
continue;
}
OBSSource src = OBSGetStrongRef(window->multiviewScenes[i]);
// We have a source. Now chose the proper highlight color
uint32_t colorVal = outerColor;
if (src == programSrc)
colorVal = programColor;
else if (src == previewSrc)
colorVal = studioMode ? previewColor : programColor;
// Paint the background
paintAreaWithColor(window->sourceX, window->sourceY,
window->scenesCX, window->scenesCY, colorVal);
paintAreaWithColor(window->siX, window->siY, window->siCX,
window->siCY, backgroundColor);
/* ----------- */
// Render the source
gs_matrix_push();
gs_matrix_translate3f(window->siX, window->siY, 0.0f);
gs_matrix_scale3f(window->siScaleX, window->siScaleY, 1.0f);
setRegion(window->siX, window->siY, window->siCX, window->siCY);
obs_source_video_render(src);
endRegion();
gs_matrix_pop();
/* ----------- */
// Render the label
if (!drawLabel)
continue;
obs_source *label = window->multiviewLabels[i + 2];
if (!label)
continue;
window->offset = labelOffset(label, window->scenesCX);
gs_matrix_push();
gs_matrix_translate3f(window->sourceX + window->offset,
(window->scenesCY * 0.85f) + window->sourceY,
0.0f);
gs_matrix_scale3f(window->ppiScaleX, window->ppiScaleY, 1.0f);
drawBox(obs_source_get_width(label),
obs_source_get_height(label) +
int(window->sourceY * 0.015f), labelColor);
obs_source_video_render(label);
gs_matrix_pop();
}
/* ----------------------------- */
/* draw preview */
obs_source_t *previewLabel = window->multiviewLabels[0];
window->offset = labelOffset(previewLabel, window->pvwprgCX);
calcPreviewProgram(false);
// Paint the background
paintAreaWithColor(window->sourceX, window->sourceY, window->ppiCX,
window->ppiCY, backgroundColor);
// Scale and Draw the preview
gs_matrix_push();
gs_matrix_translate3f(window->sourceX, window->sourceY, 0.0f);
gs_matrix_scale3f(window->ppiScaleX, window->ppiScaleY, 1.0f);
setRegion(window->sourceX, window->sourceY, window->ppiCX,
window->ppiCY);
if (studioMode)
obs_source_video_render(previewSrc);
else
obs_render_main_texture();
if (drawSafeArea) {
renderVB(window->actionSafeMargin, targetCX, targetCY,
outerColor);
renderVB(window->graphicsSafeMargin, targetCX, targetCY,
outerColor);
renderVB(window->fourByThreeSafeMargin, targetCX, targetCY,
outerColor);
renderVB(window->leftLine, targetCX, targetCY, outerColor);
renderVB(window->topLine, targetCX, targetCY, outerColor);
renderVB(window->rightLine, targetCX, targetCY, outerColor);
}
endRegion();
gs_matrix_pop();
/* ----------- */
// Draw the Label
if (drawLabel) {
gs_matrix_push();
gs_matrix_translate3f(window->labelX, window->labelY, 0.0f);
gs_matrix_scale3f(window->ppiScaleX, window->ppiScaleY, 1.0f);
drawBox(obs_source_get_width(previewLabel),
obs_source_get_height(previewLabel) +
int(window->pvwprgCX * 0.015f), labelColor);
obs_source_video_render(previewLabel);
gs_matrix_pop();
}
/* ----------------------------- */
/* draw program */
obs_source_t *programLabel = window->multiviewLabels[1];
window->offset = labelOffset(programLabel, window->pvwprgCX);
calcPreviewProgram(true);
paintAreaWithColor(window->sourceX, window->sourceY, window->ppiCX,
window->ppiCY, backgroundColor);
// Scale and Draw the program
gs_matrix_push();
gs_matrix_translate3f(window->sourceX, window->sourceY, 0.0f);
gs_matrix_scale3f(window->ppiScaleX, window->ppiScaleY, 1.0f);
setRegion(window->sourceX, window->sourceY, window->ppiCX,
window->ppiCY);
obs_render_main_texture();
endRegion();
gs_matrix_pop();
/* ----------- */
// Draw the Label
if (drawLabel) {
gs_matrix_push();
gs_matrix_translate3f(window->labelX, window->labelY, 0.0f);
gs_matrix_scale3f(window->ppiScaleX, window->ppiScaleY, 1.0f);
drawBox(obs_source_get_width(programLabel),
obs_source_get_height(programLabel) +
int(window->pvwprgCX * 0.015f), labelColor);
obs_source_video_render(programLabel);
gs_matrix_pop();
}
// Region for future usage with aditional info.
if (multiviewLayout == MultiviewLayout::HORIZONTAL_TOP_24_SCENES) {
// Just paint the background for now
paintAreaWithColor(window->thickness, window->thickness,
window->siCX, window->siCY * 2 +
window->thicknessx2, backgroundColor);
paintAreaWithColor(window->thickness + 2.5 * (
window->thicknessx2 + window->ppiCX),
window->thickness, window->siCX,
window->siCY * 2 + window->thicknessx2,
backgroundColor);
}
endRegion();
}
static void update_item_transform(struct obs_scene_item *item)
{
uint32_t width = obs_source_get_width(item->source);
uint32_t height = obs_source_get_height(item->source);
uint32_t cx = calc_cx(item, width);
uint32_t cy = calc_cy(item, height);
struct vec2 base_origin;
struct vec2 origin;
struct vec2 scale = item->scale;
struct calldata params;
uint8_t stack[128];
if (os_atomic_load_long(&item->defer_update) > 0)
return;
width = cx;
height = cy;
vec2_zero(&base_origin);
vec2_zero(&origin);
/* ----------------------- */
if (item->bounds_type != OBS_BOUNDS_NONE) {
calculate_bounds_data(item, &origin, &scale, &cx, &cy);
} else {
cx = (uint32_t)((float)cx * scale.x);
cy = (uint32_t)((float)cy * scale.y);
}
add_alignment(&origin, item->align, (int)cx, (int)cy);
matrix4_identity(&item->draw_transform);
matrix4_scale3f(&item->draw_transform, &item->draw_transform,
scale.x, scale.y, 1.0f);
matrix4_translate3f(&item->draw_transform, &item->draw_transform,
-origin.x, -origin.y, 0.0f);
matrix4_rotate_aa4f(&item->draw_transform, &item->draw_transform,
0.0f, 0.0f, 1.0f, RAD(item->rot));
matrix4_translate3f(&item->draw_transform, &item->draw_transform,
item->pos.x, item->pos.y, 0.0f);
item->output_scale = scale;
/* ----------------------- */
if (item->bounds_type != OBS_BOUNDS_NONE) {
vec2_copy(&scale, &item->bounds);
} else {
scale.x = (float)width * item->scale.x;
scale.y = (float)height * item->scale.y;
}
add_alignment(&base_origin, item->align, (int)scale.x, (int)scale.y);
matrix4_identity(&item->box_transform);
matrix4_scale3f(&item->box_transform, &item->box_transform,
scale.x, scale.y, 1.0f);
matrix4_translate3f(&item->box_transform, &item->box_transform,
-base_origin.x, -base_origin.y, 0.0f);
matrix4_rotate_aa4f(&item->box_transform, &item->box_transform,
0.0f, 0.0f, 1.0f, RAD(item->rot));
matrix4_translate3f(&item->box_transform, &item->box_transform,
item->pos.x, item->pos.y, 0.0f);
/* ----------------------- */
item->last_width = width;
item->last_height = height;
calldata_init_fixed(¶ms, stack, sizeof(stack));
calldata_set_ptr(¶ms, "scene", item->parent);
calldata_set_ptr(¶ms, "item", item);
signal_handler_signal(item->parent->source->context.signals,
"item_transform", ¶ms);
}
static void recalculate_transition_matrix(obs_source_t *tr, size_t idx)
{
obs_source_t *child;
struct matrix4 mat;
struct vec2 pos;
struct vec2 scale;
float tr_cx = (float)tr->transition_actual_cx;
float tr_cy = (float)tr->transition_actual_cy;
float source_cx;
float source_cy;
float tr_aspect = tr_cx / tr_cy;
float source_aspect;
enum obs_transition_scale_type scale_type = tr->transition_scale_type;
lock_transition(tr);
child = tr->transition_sources[idx];
if (!child) {
unlock_transition(tr);
return;
}
source_cx = (float)obs_source_get_width(child);
source_cy = (float)obs_source_get_height(child);
unlock_transition(tr);
if (source_cx == 0.0f || source_cy == 0.0f)
return;
source_aspect = source_cx / source_cy;
if (scale_type == OBS_TRANSITION_SCALE_MAX_ONLY) {
if (source_cx > tr_cx || source_cy > tr_cy) {
scale_type = OBS_TRANSITION_SCALE_ASPECT;
} else {
scale.x = 1.0f;
scale.y = 1.0f;
}
}
if (scale_type == OBS_TRANSITION_SCALE_ASPECT) {
bool use_width = tr_aspect < source_aspect;
scale.x = scale.y = use_width ?
tr_cx / source_cx :
tr_cy / source_cy;
} else if (scale_type == OBS_TRANSITION_SCALE_STRETCH) {
scale.x = tr_cx / source_cx;
scale.y = tr_cy / source_cy;
}
source_cx *= scale.x;
source_cy *= scale.y;
vec2_zero(&pos);
add_alignment(&pos, tr->transition_alignment,
(int)(tr_cx - source_cx),
(int)(tr_cy - source_cy));
matrix4_identity(&mat);
matrix4_scale3f(&mat, &mat, scale.x, scale.y, 1.0f);
matrix4_translate3f(&mat, &mat, pos.x, pos.y, 0.0f);
matrix4_copy(&tr->transition_matrices[idx], &mat);
}