fix refactored code.

ffigen.yaml

@@ -3,11 +3,12 @@ name: LibDartOpenMVG
 description: |
   Dart bindings for the OpenMVG library.
 output: 'lib/libdart_openmvg_generated.dart'
-compiler-opts: '-I/usr/include -L /usr/lib/ -lpng'
 headers:
   entry-points:
+    - 'src/frame.h'
     - 'src/image.h'
   include-directives:
+    - 'src/frame.h'
     - 'src/image.h'
 preamble: |
   // ignore_for_file: always_specify_types

lib/libdart_openmvg_generated.dart

@@ -25,50 +25,22 @@ class LibDartOpenMVG {
           lookup)
       : _lookup = lookup;
 
-  ffi.Pointer<ImageResult> image_result_new(
-    ffi.Pointer<u_char> arg0,
-    int data_len,
+  ffi.Pointer<FILE> make_buffer(
+    ffi.Pointer<ffi.Uint8> arg0,
+    int arg1,
   ) {
-    return _image_result_new(
+    return _make_buffer(
       arg0,
-      data_len,
+      arg1,
     );
   }
 
-  late final _image_result_newPtr = _lookup<
+  late final _make_bufferPtr = _lookup<
       ffi.NativeFunction<
-          ffi.Pointer<ImageResult> Function(
-              ffi.Pointer<u_char>, ffi.Size)>>('image_result_new');
-  late final _image_result_new = _image_result_newPtr.asFunction<
-      ffi.Pointer<ImageResult> Function(ffi.Pointer<u_char>, int)>();
-
-  ffi.Pointer<ImageResult> image_result_new_error(
-    int error_t,
-  ) {
-    return _image_result_new_error(
-      error_t,
-    );
-  }
-
-  late final _image_result_new_errorPtr =
-      _lookup<ffi.NativeFunction<ffi.Pointer<ImageResult> Function(ffi.Int)>>(
-          'image_result_new_error');
-  late final _image_result_new_error = _image_result_new_errorPtr
-      .asFunction<ffi.Pointer<ImageResult> Function(int)>();
-
-  int image_result_free(
-    ffi.Pointer<ImageResult> arg0,
-  ) {
-    return _image_result_free(
-      arg0,
-    );
-  }
-
-  late final _image_result_freePtr =
-      _lookup<ffi.NativeFunction<ffi.Int Function(ffi.Pointer<ImageResult>)>>(
-          'image_result_free');
-  late final _image_result_free = _image_result_freePtr
-      .asFunction<int Function(ffi.Pointer<ImageResult>)>();
+          ffi.Pointer<FILE> Function(
+              ffi.Pointer<ffi.Uint8>, ffi.Size)>>('make_buffer');
+  late final _make_buffer = _make_bufferPtr
+      .asFunction<ffi.Pointer<FILE> Function(ffi.Pointer<ffi.Uint8>, int)>();
 
   ffi.Pointer<Frame> new_frame_from_handle(
     ffi.Pointer<FILE> arg0,
@@ -115,6 +87,51 @@ class LibDartOpenMVG {
       ffi.Pointer<Frame> Function(
           ffi.Pointer<ffi.Uint8>, int, int, int, int)>();
 
+  ffi.Pointer<ImageResult> image_result_new(
+    ffi.Pointer<u_char> arg0,
+    int data_len,
+  ) {
+    return _image_result_new(
+      arg0,
+      data_len,
+    );
+  }
+
+  late final _image_result_newPtr = _lookup<
+      ffi.NativeFunction<
+          ffi.Pointer<ImageResult> Function(
+              ffi.Pointer<u_char>, ffi.Size)>>('image_result_new');
+  late final _image_result_new = _image_result_newPtr.asFunction<
+      ffi.Pointer<ImageResult> Function(ffi.Pointer<u_char>, int)>();
+
+  ffi.Pointer<ImageResult> image_result_new_error(
+    int arg0,
+  ) {
+    return _image_result_new_error(
+      arg0,
+    );
+  }
+
+  late final _image_result_new_errorPtr =
+      _lookup<ffi.NativeFunction<ffi.Pointer<ImageResult> Function(ffi.Int)>>(
+          'image_result_new_error');
+  late final _image_result_new_error = _image_result_new_errorPtr
+      .asFunction<ffi.Pointer<ImageResult> Function(int)>();
+
+  int image_result_free(
+    ffi.Pointer<ImageResult> arg0,
+  ) {
+    return _image_result_free(
+      arg0,
+    );
+  }
+
+  late final _image_result_freePtr =
+      _lookup<ffi.NativeFunction<ffi.Int Function(ffi.Pointer<ImageResult>)>>(
+          'image_result_free');
+  late final _image_result_free = _image_result_freePtr
+      .asFunction<int Function(ffi.Pointer<ImageResult>)>();
+
   ffi.Pointer<ImageResult> archimedes_get_image_data(
     ffi.Pointer<Frame> arg0,
   ) {
@@ -244,6 +261,8 @@ final class _IO_codecvt extends ffi.Opaque {}
 
 final class _IO_wide_data extends ffi.Opaque {}
 
+typedef Frame = _Frame;
+
 final class _ImageResult extends ffi.Struct {
   external ffi.Pointer<u_char> data;
 
@@ -257,4 +276,3 @@ final class _ImageResult extends ffi.Struct {
 typedef u_char = __u_char;
 typedef __u_char = ffi.UnsignedChar;
 typedef ImageResult = _ImageResult;
-typedef Frame = _Frame;

scripts/watch_compilelib.sh

@@ -10,5 +10,5 @@ DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
 
 SRC_DIR=$(realpath ${DIR}/../src)
 
-find ${SRC_DIR} -name "*.c*" -o -name "*.h" -o -name "CMakeLists.txt" | \
+find ${SRC_DIR} -name "*.c*" -o -name "*.h*" -o -name "CMakeLists.txt" | \
     entr -r ${DIR}/compilelib.sh

src/CMakeLists.txt

@@ -59,6 +59,8 @@ set(SKIP_INSTALL_ALL OFF CACHE BOOL "" FORCE) # we only want lib
 add_definitions(${PNG_DEFINITIONS})
 
 add_library(${LIBDART_OPENMVG} SHARED
+  "frame.cxx"
+  "streamingview.cxx"
   "image.cxx"
 )
 
@@ -68,11 +70,9 @@ target_include_directories(
   ${FFMPEG_INCLUDE_DIRS}
   ${PNG_INCLUDE_DIRS}
   ${ARCHIMEDES_INCLUDE_DIRS}
-  ${OPENMVG_INCLUDE_DIRS}/src
+  ${OpenMVG_DIR}/../../../include/openMVG_dependencies/cereal/include/cereal/
 )
 
-# message("LIBRARIES:" ${OpenMVG_LIBRARIES})
-
 target_link_libraries(
   ${LIBDART_OPENMVG}
    cwalk
@@ -93,7 +93,6 @@ set_target_properties(${LIBDART_OPENMVG}
   OUTPUT_NAME ${LIBDART_OPENMVG}
 )
 
-target_link_options(${LIBDART_OPENMVG} PRIVATE "-Wl,-Bstatic")
 target_link_options(${LIBDART_OPENMVG} PRIVATE "-Wl,-Bdynamic")
 
 add_executable(

src/base.hpp

@@ -0,0 +1,15 @@
+#ifdef __cplusplus
+#define EXTC extern "C"
+#define START_EXTC_GRP extern "C" {
+#define END_EXTC_GRP }
+#else
+#define EXTC
+#define START_EXTC_GRP
+#define END_EXTC_GRP
+#endif // _CPLUSPLUS
+
+#ifdef __cplusplus
+#  define _FFI_PLUGIN extern "C" __attribute__((visibility("default"))) __attribute__((used))
+#else
+#  define _FFI_PLUGIN __attribute__((visibility("default"))) __attribute__((used))
+#endif // __cplusplus

src/frame.cxx

@@ -0,0 +1,39 @@
+#include "frame.h"
+
+
+FILE *make_buffer(const uint8_t *data, const size_t data_len)
+{
+  FILE *file = fmemopen((void *)data, data_len, "r+");
+
+  if (file == NULL)
+  {
+    perror("Error opening file");
+    return NULL;
+  }
+
+  // Seek to the beginning of the file
+  rewind(file);
+
+  // Write the data to the file
+  fwrite(data, sizeof(uint8_t), data_len, file);
+
+  return file;
+}
+
+
+const Frame *new_frame_from_data(const uint8_t *data, const size_t data_len, int w, int h, int depth)
+{
+  FILE *buf = make_buffer(data, data_len);
+  return new_frame_from_handle(buf, w, h, depth);
+}
+
+
+const Frame *new_frame_from_handle(FILE *stream, int w, int h, int depth)
+{
+  Frame *f = (Frame *)malloc(sizeof(Frame));
+  f->stream = stream;
+  f->w = w;
+  f->h = h;
+  f->depth = depth;
+  return f;
+}

src/frame.h

@@ -0,0 +1,20 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include "./base.hpp"
+
+typedef struct _Frame
+{
+    FILE *stream;
+    int w;
+    int h;
+    int depth;
+} Frame;
+
+FILE *make_buffer(const uint8_t *, const size_t);
+
+_FFI_PLUGIN
+const Frame *new_frame_from_handle(FILE *, int, int, int);
+
+_FFI_PLUGIN
+const Frame *new_frame_from_data(const uint8_t *, const size_t, int, int, int);

src/image.cxx

@@ -1,14 +1,19 @@
 #include "./image.h"
 
 #ifdef __cplusplus
+#include <cereal/archives/binary.hpp>
 #include <openMVG/image/image_io.hpp>
 #include <openMVG/image/image_concat.hpp>
+#include <openMVG/sfm/sfm_view.hpp>
+#include <openMVG/sfm/sfm_view_io.hpp>
+#include <Eigen/src/Core/util/Constants.h>
 #endif // __ cplusplus
 
 _FFI_PLUGIN
-ImageResult *image_result_new(const u_char *data, const size_t data_len) {
-    ImageResult *r  = (ImageResult *) malloc(sizeof(ImageResult));
-    r->data = (u_char *) calloc(sizeof(u_char), data_len);
+ImageResult *image_result_new(const u_char *data, const size_t data_len)
+{
+  ImageResult *r = (ImageResult *)malloc(sizeof(ImageResult));
+  r->data = (u_char *)calloc(sizeof(u_char), data_len);
   memcpy(r->data, data, data_len * sizeof(u_char));
   r->data_len = data_len;
   r->error = 0;
@@ -16,8 +21,9 @@ ImageResult *image_result_new(const u_char *data, const size_t data_len) {
 }
 
 _FFI_PLUGIN
-ImageResult *image_result_new_error(const error_t err) {
-    ImageResult *r  = (ImageResult *) malloc(sizeof(ImageResult));
+ImageResult *image_result_new_error(const error_t err)
+{
+  ImageResult *r = (ImageResult *)malloc(sizeof(ImageResult));
   r->data = NULL;
   r->data_len = 0;
   r->error = err;
@@ -25,62 +31,37 @@ ImageResult *image_result_new_error(const error_t err) {
 }
 
 _FFI_PLUGIN
-void free_image_result(ImageResult *image_result) {
+void free_image_result(ImageResult *image_result)
+{
   free(image_result->data);
   free(image_result);
 }
 
-const Frame *new_frame_from_handle(FILE *stream, int w, int h, int depth)
-{
-  Frame *f = (Frame *)malloc(sizeof(Frame));
-  f->stream = stream;
-  f->w = w;
-  f->h = h;
-  f->depth = depth;
-  return f;
-}
 
-FILE *make_buffer(const uint8_t *data, const size_t data_len)
+std::vector<u_char> Archimedes::get_image_data_as_vector(const Frame *frame)
 {
-  FILE *file = fmemopen((void *)data, data_len, "r+");
-
-  if (file == NULL)
+  rewind(frame->stream);
+  std::vector<unsigned char> imageData;
+  if (!openMVG::image::ReadPngStream(frame->stream, &imageData, (int *)&(frame->w), (int *)&(frame->h), (int *)&(frame->depth)))
   {
-    perror("Error opening file");
-    return NULL;
+    throw std::runtime_error("Could not read stream");
   }
-
-  // Seek to the beginning of the file
-  rewind(file);
-
-  // Write the data to the file
-  fwrite(data, sizeof(uint8_t), data_len, file);
-
-  return file;
-}
-
-_FFI_PLUGIN
-const Frame *
-new_frame_from_data(const uint8_t *data, const size_t data_len, int w, int h, int depth)
-{
-  FILE *buf = make_buffer(data, data_len);
-  return new_frame_from_handle(buf, w, h, depth);
+  return imageData;
 }
 
 #ifdef __cplusplus
 
-extern "C"
 ImageResult *Archimedes::get_image_data(const Frame *frame)
 {
-  std::vector<unsigned char> imageData;
-  rewind(frame->stream);
-  if (!openMVG::image::ReadPngStream(frame->stream, &imageData, (int *)&(frame->w), (int *)&(frame->h), (int *)&(frame->depth))) {
-    printf("ERROR: Could not read stream!\n");
-    return image_result_new_error(1);
-  }
+  try {
+    const std::vector<u_char> imageData = get_image_data_as_vector(frame);
     printf("Read %lu bytes.\n", imageData.size());
     const unsigned char *data = imageData.data();
     return image_result_new(data, imageData.size());
+  } catch (const std::runtime_error& e) {
+    std::cerr << e.what() << std::endl;
+    return image_result_new_error(1);
+  }
 }
 
 #endif
@@ -91,9 +72,28 @@ ImageResult *archimedes_get_image_data(const Frame *frame)
   return Archimedes::get_image_data(frame);
 }
 
-_FFI_PLUGIN
 int Archimedes::images_to_sfm(const Frame **frames, size_t n_frames)
 {
+  using namespace openMVG::sfm;
+
+  const Frame *frame = frames[0];
+  const std::vector<u_char> imageData = get_image_data_as_vector(frame);
+
+  const size_t w = frame->w;
+  const size_t h = frame->h;
+
+  // Create the Eigen matrix and the image
+
+  Eigen::Matrix<u_char, Eigen::Dynamic, Eigen::Dynamic, 1> eigenMatrix(w, h);
+  for (int i = 0; i < w * h; ++i) {
+      eigenMatrix(i / h, i % h) = imageData[i];
+  }
+
+  openMVG::image::Image bvgImage(eigenMatrix);
+
+
+  SfM_Data sfmData {};
+  sfmData.views = Views();
 
   return 0;
 }

src/image.h

@@ -29,34 +29,40 @@
 #include <openMVG/sfm/pipelines/stellar/sfm_stellar_engine.hpp>
 #endif // __cplusplus
 
+#include "./base.hpp"
+#include "frame.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <error.h>
 #include <png.h>
 
-#ifdef __cplusplus
-#  define _FFI_PLUGIN extern "C" __attribute__((visibility("default"))) __attribute__((used))
-#else
-#  define _FFI_PLUGIN __attribute__((visibility("default"))) __attribute__((used))
-#endif // __cplusplus
-
 #if defined(__cplusplus)
 
 extern "C" {
     auto png_sig_cm = png_sig_cmp;
 }
 
+
 #endif // __cplusplus
 
+#define error_t int
 
-typedef struct _Frame
-{
-    FILE *stream;
-    int w;
-    int h;
-    int depth;
-} Frame;
+#ifdef __cplusplus
 
+class StreamedView : openMVG::sfm::View {
+
+    private:
+
+        const Frame *mFrame;
+
+    public:
+        
+        StreamedView(const Frame *);
+
+};
+
+#endif
 
 typedef struct _ImageResult
 {
@@ -72,21 +78,12 @@ ImageResult *image_result_new_error(const error_t);
 _FFI_PLUGIN
 int image_result_free(ImageResult *);
 
-_FFI_PLUGIN
-const Frame *new_frame_from_handle(FILE *, int, int, int);
-_FFI_PLUGIN
-const Frame *
-new_frame_from_data(const uint8_t *, const size_t, int, int, int);
 
 #ifdef __cplusplus
-typedef openMVG::image::Image<openMVG::image::RGBColor> RgbImage;
-typedef std::vector<openMVG::features::AffinePointFeature> FeatureVector;
-typedef openMVG::image::Image<unsigned char> UImage;
-typedef std::vector<openMVG::features::MSER::MSERRegion> RegionVector;
-typedef openMVG::sfm::SfM_Data Sfm_Data;
 
-extern "C" namespace Archimedes
+namespace Archimedes
 {
+    std::vector<u_char> get_image_data_as_vector(const Frame *frame);
     ImageResult *get_image_data(const Frame *);
     int images_to_sfm(const Frame **, size_t);
 }

src/streamingview.cxx

@@ -0,0 +1,15 @@
+#include "streamingview.hpp"
+
+template<class Archive>
+void libdart_openmvg::StreamingView::load(cereal::BinaryOutputArchive &ar) const {
+    int i = 0;
+    while (i = fgetc(mFrame->stream) != EOF) {
+        ar(i);
+    }
+}
+
+template<class Archive>
+void libdart_openmvg::StreamingView::save(cereal::BinaryInputArchive &ar) const {
+    // int i = 0;
+    // todo
+}

src/streamingview.hpp

@@ -0,0 +1,25 @@
+#include <archives/binary.hpp>
+#include <openMVG/sfm/sfm_view.hpp>
+#include <stdio.h>
+#include "frame.h"
+
+typedef openMVG::sfm::View View;
+
+namespace libdart_openmvg
+{
+
+    struct StreamingView : View
+    {
+
+    private:
+        const Frame *mFrame;
+
+    public:
+        StreamingView(const Frame *frame) : mFrame(frame), View () {}
+        template <class Archive>
+        void save(cereal::BinaryInputArchive &) const;
+        template <class Archive>
+        void load(cereal::BinaryOutputArchive &) const;
+    };
+
+}