Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/third_party/jpeg-xl/lib/extras/dec/pnm.h b/third_party/jpeg-xl/lib/extras/dec/pnm.h
new file mode 100644
index 0000000000..b740a79af5
--- /dev/null
+++ b/third_party/jpeg-xl/lib/extras/dec/pnm.h
@@ -0,0 +1,68 @@
+// 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.
+
+#ifndef LIB_EXTRAS_DEC_PNM_H_
+#define LIB_EXTRAS_DEC_PNM_H_
+
+// Decodes PBM/PGM/PPM/PFM pixels in memory.
+
+#include <stddef.h>
+#include <stdint.h>
+
+// TODO(janwas): workaround for incorrect Win64 codegen (cause unknown)
+#include <hwy/highway.h>
+#include <mutex>
+
+#include "lib/extras/dec/color_hints.h"
+#include "lib/extras/mmap.h"
+#include "lib/extras/packed_image.h"
+#include "lib/jxl/base/data_parallel.h"
+#include "lib/jxl/base/span.h"
+#include "lib/jxl/base/status.h"
+
+namespace jxl {
+
+struct SizeConstraints;
+
+namespace extras {
+
+// Decodes `bytes` into `ppf`. color_hints may specify "color_space", which
+// defaults to sRGB.
+Status DecodeImagePNM(Span<const uint8_t> bytes, const ColorHints& color_hints,
+                      PackedPixelFile* ppf,
+                      const SizeConstraints* constraints = nullptr);
+
+void TestCodecPNM();
+
+struct HeaderPNM {
+  size_t xsize;
+  size_t ysize;
+  bool is_gray;    // PGM
+  bool has_alpha;  // PAM
+  size_t bits_per_sample;
+  bool floating_point;
+  bool big_endian;
+  std::vector<JxlExtraChannelType> ec_types;  // PAM
+};
+
+class ChunkedPNMDecoder {
+ public:
+  static StatusOr<ChunkedPNMDecoder> Init(const char* file_path);
+  // Initializes `ppf` with a pointer to this `ChunkedPNMDecoder`.
+  jxl::Status InitializePPF(const ColorHints& color_hints,
+                            PackedPixelFile* ppf);
+
+ private:
+  HeaderPNM header_ = {};
+  size_t data_start_ = 0;
+  MemoryMappedFile pnm_;
+
+  friend struct PNMChunkedInputFrame;
+};
+
+}  // namespace extras
+}  // namespace jxl
+
+#endif  // LIB_EXTRAS_DEC_PNM_H_