1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/modular/modular_image.cc b/third_party/jpeg-xl/lib/jxl/modular/modular_image.cc
new file mode 100644
index 0000000000..785d0c5443
--- /dev/null
+++ b/third_party/jpeg-xl/lib/jxl/modular/modular_image.cc
@@ -0,0 +1,77 @@
+// Copyright (c) the JPEG XL Project Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "lib/jxl/modular/modular_image.h"
+
+#include <sstream>
+
+#include "lib/jxl/base/status.h"
+#include "lib/jxl/common.h"
+#include "lib/jxl/modular/transform/transform.h"
+
+namespace jxl {
+
+void Image::undo_transforms(const weighted::Header &wp_header,
+                            jxl::ThreadPool *pool) {
+  while (!transform.empty()) {
+    Transform t = transform.back();
+    JXL_DEBUG_V(4, "Undoing transform");
+    Status result = t.Inverse(*this, wp_header, pool);
+    if (result == false) {
+      JXL_NOTIFY_ERROR("Error while undoing transform.");
+      error = true;
+      return;
+    }
+    JXL_DEBUG_V(8, "Undoing transform: done");
+    transform.pop_back();
+  }
+}
+
+Image::Image(size_t iw, size_t ih, int bitdepth, int nb_chans)
+    : w(iw), h(ih), bitdepth(bitdepth), nb_meta_channels(0), error(false) {
+  for (int i = 0; i < nb_chans; i++) channel.emplace_back(Channel(iw, ih));
+}
+
+Image::Image() : w(0), h(0), bitdepth(8), nb_meta_channels(0), error(true) {}
+
+Image &Image::operator=(Image &&other) noexcept {
+  w = other.w;
+  h = other.h;
+  bitdepth = other.bitdepth;
+  nb_meta_channels = other.nb_meta_channels;
+  error = other.error;
+  channel = std::move(other.channel);
+  transform = std::move(other.transform);
+  return *this;
+}
+
+Image Image::clone() {
+  Image c(w, h, bitdepth, 0);
+  c.nb_meta_channels = nb_meta_channels;
+  c.error = error;
+  c.transform = transform;
+  for (Channel &ch : channel) {
+    Channel a(ch.w, ch.h, ch.hshift, ch.vshift);
+    CopyImageTo(ch.plane, &a.plane);
+    c.channel.push_back(std::move(a));
+  }
+  return c;
+}
+
+std::string Image::DebugString() const {
+  std::ostringstream os;
+  os << w << "x" << h << ", depth: " << bitdepth;
+  if (!channel.empty()) {
+    os << ", channels:";
+    for (size_t i = 0; i < channel.size(); ++i) {
+      os << " " << channel[i].w << "x" << channel[i].h
+         << "(shift: " << channel[i].hshift << "," << channel[i].vshift << ")";
+      if (i < nb_meta_channels) os << "*";
+    }
+  }
+  return os.str();
+}
+
+}  // namespace jxl