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Add support for writing image data output to a buffer, boosting ops/sec by ~7%. Partially implements #3.

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Lovell Fuller
2014-01-11 21:50:17 +00:00
parent dde9e94850
commit f7b8ce1287
5 changed files with 142 additions and 42 deletions
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62
tests/perf.js
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@@ -8,9 +8,11 @@ var Benchmark = require("benchmark");
var inputJpg = __dirname + "/2569067123_aca715a2ee_o.jpg"; // http://www.flickr.com/photos/grizdave/2569067123/
var outputJpg = __dirname + "/output.jpg";
var outputJpgLength = 47035;
var inputPng = __dirname + "/50020484-00001.png"; // http://c.searspartsdirect.com/lis_png/PLDM/50020484-00001.png
var outputPng = __dirname + "/output.png";
var outputPngLength = 60379;
var width = 640;
var height = 480;
@@ -18,8 +20,8 @@ var height = 480;
async.series({
jpeg: function(callback) {
(new Benchmark.Suite("jpeg")).add("imagemagick", {
"defer": true,
"fn": function(deferred) {
defer: true,
fn: function(deferred) {
imagemagick.resize({
srcPath: inputJpg,
dstPath: outputJpg,
@@ -35,8 +37,8 @@ async.series({
});
}
}).add("gm", {
"defer": true,
"fn": function(deferred) {
defer: true,
fn: function(deferred) {
gm(inputJpg).crop(width, height).quality(80).write(outputJpg, function (err) {
if (err) {
throw err;
@@ -46,15 +48,15 @@ async.series({
});
}
}).add("epeg", {
"defer": true,
"fn": function(deferred) {
defer: true,
fn: function(deferred) {
var image = new epeg.Image({path: inputJpg});
image.downsize(width, height, 80).saveTo(outputJpg);
deferred.resolve();
}
}).add("sharp", {
"defer": true,
"fn": function(deferred) {
}).add("sharp-file", {
defer: true,
fn: function(deferred) {
sharp.crop(inputJpg, outputJpg, width, height, function(err) {
if (err) {
throw err;
@@ -63,6 +65,19 @@ async.series({
}
});
}
}).add("sharp-buffer", {
defer: true,
fn: function(deferred) {
sharp.crop(inputJpg, sharp.buffer.jpeg, width, height, function(err, buffer) {
if (err) {
throw err;
} else {
assert.notStrictEqual(null, buffer);
assert.strictEqual(outputJpgLength, buffer.length);
deferred.resolve();
}
});
}
}).on("cycle", function(event) {
console.log("jpeg " + String(event.target));
}).on("complete", function() {
@@ -71,8 +86,8 @@ async.series({
},
png: function(callback) {
(new Benchmark.Suite("png")).add("imagemagick", {
"defer": true,
"fn": function(deferred) {
defer: true,
fn: function(deferred) {
imagemagick.resize({
srcPath: inputPng,
dstPath: outputPng,
@@ -87,8 +102,8 @@ async.series({
});
}
}).add("gm", {
"defer": true,
"fn": function(deferred) {
defer: true,
fn: function(deferred) {
gm(inputPng).crop(width, height).write(outputPng, function (err) {
if (err) {
throw err;
@@ -97,9 +112,9 @@ async.series({
}
});
}
}).add("sharp", {
"defer": true,
"fn": function(deferred) {
}).add("sharp-file", {
defer: true,
fn: function(deferred) {
sharp.crop(inputPng, outputPng, width, height, function(err) {
if (err) {
throw err;
@@ -108,6 +123,19 @@ async.series({
}
});
}
}).add("sharp-buffer", {
defer: true,
fn: function(deferred) {
sharp.crop(inputPng, sharp.buffer.png, width, height, function(err, buffer) {
if (err) {
throw err;
} else {
assert.notStrictEqual(null, buffer);
assert.strictEqual(outputPngLength, buffer.length);
deferred.resolve();
}
});
}
}).on("cycle", function(event) {
console.log(" png " + String(event.target));
}).on("complete", function() {
@@ -117,6 +145,6 @@ async.series({
}, function(err, results) {
assert(!err, err);
Object.keys(results).forEach(function(format) {
assert(results[format] == "sharp", "sharp was slower than " + results[format] + " for " + format);
assert.strictEqual("sharp", results[format].toString().substr(0, 5), "sharp was slower than " + results[format] + " for " + format);
});
});