mirrors/kitty
1
0
Fork 0
mirror of https://github.com/kovidgoyal/kitty synced 2026-07-15 13:04:38 +02:00
Code Issues Packages Projects Releases Wiki Activity

Dont use extra memory for mirror operations

Browse Source
This commit is contained in:
Kovid Goyal
2023-01-03 08:42:21 +05:30
parent eec4c6b802
commit 458adf967a
2 changed files with 79 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
tools/cmd/icat/native.go
View File

@@ -33,23 +33,20 @@ func add_frame(imgd *image_data, img image.Image) *image_frame {
if imgd.scaled_frac.x != 0 {
img, b = resize_frame(imgd, img)
}
if flip {
img = imaging.FlipV(img)
}
if flop {
img = imaging.FlipH(img)
}
f := image_frame{width: b.Dx(), height: b.Dy(), number: len(imgd.frames) + 1, left: b.Min.X, top: b.Min.Y}
dest_rect := image.Rect(0, 0, f.width, f.height)
var final_img image.Image
const shm_template = "kitty-icat-*"
bytes_per_pixel := 4
if is_opaque || remove_alpha != nil {
var rgb *images.NRGB
m, err := shm.CreateTemp("icat-*", uint64(f.width*f.height*3))
bytes_per_pixel = 3
m, err := shm.CreateTemp(shm_template, uint64(f.width*f.height*bytes_per_pixel))
if err != nil {
rgb = images.NewNRGB(dest_rect)
} else {
rgb = &images.NRGB{Pix: m.Slice(), Stride: 3 * f.width, Rect: dest_rect}
rgb = &images.NRGB{Pix: m.Slice(), Stride: bytes_per_pixel * f.width, Rect: dest_rect}
f.shm = m
}
f.transmission_format = graphics.GRT_format_rgb
@@ -57,11 +54,11 @@ func add_frame(imgd *image_data, img image.Image) *image_frame {
final_img = rgb
} else {
var rgba *image.NRGBA
m, err := shm.CreateTemp("icat-*", uint64(f.width*f.height*4))
m, err := shm.CreateTemp(shm_template, uint64(f.width*f.height*bytes_per_pixel))
if err != nil {
rgba = image.NewNRGBA(dest_rect)
} else {
rgba = &image.NRGBA{Pix: m.Slice(), Stride: 4 * f.width, Rect: dest_rect}
rgba = &image.NRGBA{Pix: m.Slice(), Stride: bytes_per_pixel * f.width, Rect: dest_rect}
f.shm = m
}
f.transmission_format = graphics.GRT_format_rgba
@@ -70,6 +67,18 @@ func add_frame(imgd *image_data, img image.Image) *image_frame {
}
images.PasteCenter(final_img, img, remove_alpha)
imgd.frames = append(imgd.frames, &f)
if flip {
images.FlipPixelsV(bytes_per_pixel, f.width, f.height, f.in_memory_bytes)
if f.height < imgd.canvas_height {
f.top = (2*imgd.canvas_height - f.height - f.top) % imgd.canvas_height
}
}
if flop {
images.FlipPixelsH(bytes_per_pixel, f.width, f.height, f.in_memory_bytes)
if f.width < imgd.canvas_width {
f.left = (2*imgd.canvas_width - f.width - f.left) % imgd.canvas_width
}
}
return &f
}
@@ -80,10 +89,12 @@ func scale_image(imgd *image_data) {
r := float64(imgd.available_width) / float64(imgd.canvas_width)
imgd.canvas_width, imgd.canvas_height = imgd.available_width, int(r*float64(imgd.canvas_height))
}
imgd.canvas_width, imgd.canvas_height = images.FitImage(imgd.canvas_width, imgd.canvas_height, imgd.available_width, imgd.available_height)
neww, newh := images.FitImage(imgd.canvas_width, imgd.canvas_height, imgd.available_width, imgd.available_height)
imgd.needs_scaling = false
imgd.scaled_frac.x = float64(imgd.canvas_width) / float64(width)
imgd.scaled_frac.y = float64(imgd.canvas_height) / float64(height)
imgd.scaled_frac.x = float64(neww) / float64(width)
imgd.scaled_frac.y = float64(newh) / float64(height)
imgd.canvas_width = int(imgd.scaled_frac.x * float64(width))
imgd.canvas_height = int(imgd.scaled_frac.y * float64(height))
}
}