photoprism/internal/config/resample.go

87 lines
1.9 KiB
Go

package config
import (
"strings"
"github.com/photoprism/photoprism/internal/thumb"
)
// JpegSize returns the size limit for automatically converted files in `PIXELS` (720-30000).
func (c *Config) JpegSize() int {
if c.options.JpegSize < 720 {
return 720
} else if c.options.JpegSize > 30000 {
return 30000
}
return c.options.JpegSize
}
// JpegQuality returns the jpeg quality for resampling, use 95 for high-quality thumbs (25-100).
func (c *Config) JpegQuality() int {
if c.options.JpegQuality > 100 {
return 100
}
if c.options.JpegQuality < 25 {
return 25
}
return c.options.JpegQuality
}
// ThumbFilter returns the thumbnail resample filter (best to worst: blackman, lanczos, cubic or linear).
func (c *Config) ThumbFilter() thumb.ResampleFilter {
switch strings.ToLower(c.options.ThumbFilter) {
case "blackman":
return thumb.ResampleBlackman
case "lanczos":
return thumb.ResampleLanczos
case "cubic":
return thumb.ResampleCubic
case "linear":
return thumb.ResampleLinear
default:
return thumb.ResampleCubic
}
}
// ThumbPath returns the thumbnails directory.
func (c *Config) ThumbPath() string {
return c.CachePath() + "/thumbnails"
}
// ThumbUncached checks if on-demand thumbnail rendering is enabled (high memory and cpu usage).
func (c *Config) ThumbUncached() bool {
return c.options.ThumbUncached
}
// ThumbSize returns the pre-rendered thumbnail size limit in pixels (720-7680).
func (c *Config) ThumbSize() int {
size := c.options.ThumbSize
if size < 720 {
size = 720 // Mobile, TV
} else if size > 7680 {
size = 7680 // 8K Ultra HD
}
return size
}
// ThumbSizeUncached returns the on-demand rendering size limit in pixels (720-7680).
func (c *Config) ThumbSizeUncached() int {
limit := c.options.ThumbSizeUncached
if limit < 720 {
limit = 720 // Mobile, TV
} else if limit > 7680 {
limit = 7680 // 8K Ultra HD
}
if c.ThumbSize() > limit {
limit = c.ThumbSize()
}
return limit
}