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render rgba image

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This commit is contained in:
foglar 2025-05-27 13:50:21 +02:00
parent de37cd71fa
commit 0e727c5a5b
1 changed files with 18 additions and 19 deletions
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37
term_image/render_image.go
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@ -1,12 +1,10 @@
package term_image package term_image
import ( import (
"bytes"
"encoding/base64" "encoding/base64"
"fmt" "fmt"
"image" "image"
"image/draw" "image/draw"
"image/png"
"os" "os"
) )
@ -20,21 +18,14 @@ func LoadImage(filePath string) (image.Image, error) {
return img, err return img, err
} }
func EncodeImageToBase64RGBA(img image.Image) image.Image { func ConvertToRGBA(img image.Image) *image.RGBA {
rgba := image.NewRGBA(img.Bounds()) rgba := image.NewRGBA(img.Bounds())
draw.Draw(rgba, rgba.Bounds(), img, image.Point{0, 0}, draw.Src) draw.Draw(rgba, rgba.Bounds(), img, image.Point{0, 0}, draw.Src)
fmt.Print(rgba)
return rgba return rgba
} }
func EncodeImageToBase64(img image.Image) (string, error) {
var buf bytes.Buffer
err := png.Encode(&buf, img)
if err != nil {
return "", fmt.Errorf("Error encodeing image: %w", err)
}
encoded := base64.StdEncoding.EncodeToString(buf.Bytes()) func EncodeImageToBase64RGBA(rgba *image.RGBA) string {
return encoded, nil return base64.StdEncoding.EncodeToString(rgba.Pix)
} }
func RenderImage(filepath string, row int, col int) { func RenderImage(filepath string, row int, col int) {
@ -44,26 +35,34 @@ func RenderImage(filepath string, row int, col int) {
return return
} }
EncodeImageToBase64RGBA(img) rgba := ConvertToRGBA(img)
encoded, err := EncodeImageToBase64(img) encoded := EncodeImageToBase64RGBA(rgba)
width := rgba.Rect.Dx()
height := rgba.Rect.Dy()
fmt.Printf("\033[s\033[%d;%dH", row, col) fmt.Printf("\033[s\033[%d;%dH", row, col)
chunk_size := 4096 chunk_size := 4096
pos := 0 pos := 0
first := true
for pos < len(encoded) { for pos < len(encoded) {
fmt.Print("\033_G") fmt.Print("\033_G")
if pos == 0 { if first {
fmt.Print("q=2,a=T,f=100,") fmt.Printf("q=2,a=T,f=32,s=%d,v=%d,", width, height)
first = false
} }
remaining := len(encoded) - pos remaining := len(encoded) - pos
chunk_len := remaining chunk_len := remaining
if remaining > chunk_size { if chunk_len > chunk_size {
chunk_len = chunk_size chunk_len = chunk_size
} }
if pos+chunk_len < len(encoded) { if pos+chunk_len < len(encoded) {
fmt.Print("m=1") fmt.Print("m=1;")
} else {
fmt.Print(";")
} }
fmt.Printf(";%s", encoded[pos:][:chunk_len]) fmt.Print(encoded[pos : pos+chunk_len])
fmt.Print("\033\\") fmt.Print("\033\\")
pos += chunk_len pos += chunk_len
} }