int gavl_deinterlacer_init_scale(gavl_video_deinterlacer_t * d)
{
gavl_video_options_t * scaler_opt;
gavl_video_format_t in_format;
gavl_video_format_t out_format;
if(!d->scaler)
d->scaler = gavl_video_scaler_create();
scaler_opt = gavl_video_scaler_get_options(d->scaler);
gavl_video_options_copy(scaler_opt, &d->opt);
gavl_video_format_copy(&in_format, &d->format);
gavl_video_format_copy(&out_format, &d->format);
if(in_format.interlace_mode == GAVL_INTERLACE_NONE)
in_format.interlace_mode = GAVL_INTERLACE_TOP_FIRST;
out_format.interlace_mode = GAVL_INTERLACE_NONE;
gavl_video_scaler_init(d->scaler,
&in_format,
&out_format);
d->func = deinterlace_scale;
return 1;
}
static void * create_cropscale()
{
cropscale_priv_t * ret;
ret = calloc(1, sizeof(*ret));
ret->scaler = gavl_video_scaler_create();
ret->opt = gavl_video_scaler_get_options(ret->scaler);
ret->global_opt = gavl_video_options_create();
ret->border_color[3] = 1.0;
return ret;
}
static int add_context_scale(gavl_video_converter_t * cnv,
const gavl_video_format_t * input_format,
const gavl_video_format_t * output_format)
{
gavl_video_options_t * scaler_options;
gavl_video_convert_context_t * ctx;
ctx = add_context(cnv, input_format, output_format);
ctx->scaler = gavl_video_scaler_create();
scaler_options = gavl_video_scaler_get_options(ctx->scaler);
gavl_video_options_copy(scaler_options, &cnv->options);
#if 0
fprintf(stderr, "gavl_video_scaler_init:\n");
fprintf(stderr, "src_format:\n");
gavl_video_format_dump(input_format);
fprintf(stderr, "dst_format:\n");
gavl_video_format_dump(output_format);
fprintf(stderr, "src_rectangle: ");
gavl_rectangle_f_dump(&cnv->options.src_rect);
fprintf(stderr, "\n");
fprintf(stderr, "dst_rectangle: ");
gavl_rectangle_i_dump(&cnv->options.dst_rect);
fprintf(stderr, "\n");
#endif
if(!gavl_video_scaler_init(ctx->scaler,
input_format,
output_format))
{
// fprintf(stderr, "Initializing scaler failed\n");
return 0;
}
ctx->func = scale_func;
return 1;
}
static void update_scaler( scale0tilt_instance_t* inst )
{
float dst_x, dst_y, dst_w, dst_h;
float src_x, src_y, src_w, src_h;
inst->do_scale = 1;
src_x = inst->w * inst->cl;
src_y = inst->h * inst->ct;
src_w = inst->w * (1.0 - inst->cl - inst->cr );
src_h = inst->h * (1.0 - inst->ct - inst->cb );
dst_x = inst->w * inst->cl * inst->sx + inst->tx * inst->w;
dst_y = inst->h * inst->ct * inst->sy + inst->ty * inst->h;
dst_w = inst->w * (1.0 - inst->cl - inst->cr) * inst->sx;
dst_h = inst->h * (1.0 - inst->ct - inst->cb) * inst->sy;
if((dst_w < EPSILON) || (dst_h < EPSILON) ||
(src_w < EPSILON) || (src_h < EPSILON)) {
inst->do_scale = 0;
return;
}
if ( dst_x + dst_w > inst->w ) {
src_w = src_w * ( (inst->w-dst_x) / dst_w );
dst_w = inst->w - dst_x;
}
if ( dst_y + dst_h > inst->h ) {
src_h = src_h * ( (inst->h-dst_y) / dst_h );
dst_h = inst->h - dst_y;
}
if ( dst_x < 0 ) {
src_x = src_x - dst_x * ( src_w / dst_w );
src_w = src_w * ( (dst_w+dst_x) / dst_w );
dst_w = dst_w + dst_x;
dst_x = 0;
}
if ( dst_y < 0 ) {
src_y = src_y - dst_y * ( src_h / dst_h );
src_h = src_h * ( (dst_h+dst_y) / dst_h );
dst_h = dst_h + dst_y;
dst_y = 0;
}
if((dst_w < EPSILON) || (dst_h < EPSILON) ||
(src_w < EPSILON) || (src_h < EPSILON)) {
inst->do_scale = 0;
return;
}
gavl_video_options_t* options = gavl_video_scaler_get_options( inst->video_scaler );
gavl_video_format_t format_dst;
livido_memset(&format_dst, 0, sizeof(format_dst));
format_dst.frame_width = inst->w;
format_dst.frame_height = inst->h;
format_dst.image_width = inst->w;
format_dst.image_height = inst->h;
format_dst.pixel_width = 1;
format_dst.pixel_height = 1;
format_dst.pixelformat = GAVL_YUVJ_444_P;
gavl_rectangle_f_t src_rect;
gavl_rectangle_i_t dst_rect;
src_rect.x = src_x;
src_rect.y = src_y;
src_rect.w = src_w;
src_rect.h = src_h;
dst_rect.x = lroundf(dst_x);
dst_rect.y = lroundf(dst_y);
dst_rect.w = lroundf(dst_w);
dst_rect.h = lroundf(dst_h);
gavl_video_options_set_rectangles( options, &src_rect, &dst_rect );
gavl_video_scaler_init( inst->video_scaler, &inst->format_src, &format_dst );
}
