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修改图片质量参数

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yanue
2016-01-20 21:22:17 +08:00
parent 1073c519b9
commit a8ed28afc9
2 changed files with 10 additions and 5 deletions
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4
lua/autoSize.lua
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@@ -74,7 +74,7 @@ ngx.log(ngx.ERR,height)
ngx.log(ngx.ERR,ngx.var.img_file);
ngx.log(ngx.ERR,ngx.var.request_filepath);
-- 裁剪后保证等比缩图 （缺点：裁剪了图片的一部分）
-- gm convert input.jpg -thumbnail "100x100^" -gravity center -extent 100x100 output_3.jpg
-- 如: gm convert autoSize.jpg -resize x200 -quality 100 +profile "*" autoSize.jpg_-200.jpg
if (file_exists(ngx.var.request_filepath)) then
local cmd = gm_path .. ' convert ' .. ngx.var.request_filepath
if height == 0 then
@@ -83,6 +83,8 @@ if (file_exists(ngx.var.request_filepath)) then
cmd = cmd .. " -resize " .. "x" .. height .. ""
end
-- 由于压缩后比较模糊,默认图片质量为100,请根据自己情况修改quality
cmd = cmd .. " -quality 100"
cmd = cmd .. " +profile \"*\" " .. ngx.var.img_file;
ngx.log(ngx.ERR, cmd);
os.execute(cmd);

11
lua/cropSize.lua
View File

@@ -52,15 +52,18 @@ if not is_dir(getFileDir(ngx.var.img_file)) then
os.execute("mkdir -p " .. getFileDir(ngx.var.img_file))
end
ngx.log(ngx.ERR,ngx.var.img_file);
ngx.log(ngx.ERR,ngx.var.request_filepath);
-- ngx.log(ngx.ERR,ngx.var.img_file);
-- ngx.log(ngx.ERR,ngx.var.request_filepath);
-- 裁剪后保证等比缩图 （缺点：裁剪了图片的一部分）
-- gm convert input.jpg -thumbnail "100x100^" -gravity center -extent 100x100 output_3.jpg
-- gm convert cropSize.jpg -thumbnail 300x300^ -gravity center -extent 300x300 -quality 100 +profile "*" cropSize.jpg_300x300.jpg
if (file_exists(ngx.var.request_filepath)) then
local cmd = gm_path .. ' convert ' .. ngx.var.request_filepath
cmd = cmd .. " -thumbnail " .. ngx.var.img_width .. "x" .. ngx.var.img_height .. "^"
cmd = cmd .. " -gravity center -extent " .. ngx.var.img_width .. "x" .. ngx.var.img_height
-- cmd = cmd .. " -quality 100"
-- 由于压缩后比较模糊,默认图片质量为100,请根据自己情况修改quality
cmd = cmd .. " -quality 100"
cmd = cmd .. " +profile \"*\" " .. ngx.var.img_file;
-- ngx.log(ngx.ERR, cmd);
os.execute(cmd);