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Port freeze

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This commit is contained in:
Essem 2022-03-09 13:10:10 -06:00
parent a1b12e16b4
commit d9a2e0bfb9
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GPG key ID: 7D497397CC3A2A8C
1 changed files with 23 additions and 22 deletions
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45
natives/freeze.cc
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@ -1,11 +1,11 @@
#include <Magick++.h>
#include <napi.h>
#include <iostream>
#include <list>
#include <vips/vips8>
using namespace std;
using namespace Magick;
using namespace vips;
Napi::Value Freeze(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
@ -54,29 +54,30 @@ Napi::Value Freeze(const Napi::CallbackInfo &info) {
result.Set("data",
Napi::Buffer<char>::Copy(env, newData, data.Length()));
} else if (frame >= 0 && !loop) {
Blob blob;
VOption *options = VImage::option()->set("access", "sequential");
list<Image> frames;
try {
readImages(&frames, Blob(data.Data(), data.Length()));
} catch (Magick::WarningCoder &warning) {
cerr << "Coder Warning: " << warning.what() << endl;
} catch (Magick::Warning &warning) {
cerr << "Warning: " << warning.what() << endl;
}
size_t frameSize = frames.size();
int framePos = clamp(frame, 0, (int)frameSize);
frames.resize(framePos + 1);
VImage in = VImage::new_from_buffer(
data.Data(), data.Length(), "",
type == "gif" ? options->set("n", -1) : options)
.colourspace(VIPS_INTERPRETATION_sRGB);
if (!in.has_alpha()) in = in.bandjoin(255);
for_each(frames.begin(), frames.end(),
animationIterationsImage(loop ? 0 : 1));
for_each(frames.begin(), frames.end(), magickImage(type));
int page_height = vips_image_get_page_height(in.get_image());
int n_pages = vips_image_get_n_pages(in.get_image());
int framePos = clamp(frame, 0, (int)n_pages);
VImage out = in.crop(0, 0, in.width(), page_height * (framePos + 1));
out.set(VIPS_META_PAGE_HEIGHT, page_height);
out.set("loop", loop ? 0 : 1);
if (delay != 0)
for_each(frames.begin(), frames.end(), animationDelayImage(delay));
writeImages(frames.begin(), frames.end(), &blob);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
if (delay) out.set("delay", delay);
void *buf;
size_t length;
out.write_to_buffer(("." + type).c_str(), &buf, &length);
vips_thread_shutdown();
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
} else {
lastPos = (char *)memchr(fileData, '\x21', data.Length());
while (lastPos != NULL) {