Move fft symbols to signal

PiperOrigin-RevId: 221102181

tensorflow/core/api_def/python_api/api_def_FFT.pbtxt

@@ -1,7 +1,11 @@
 op {
   graph_op_name: "FFT"
+  endpoint {
+    name: "signal.fft"
+  }
   endpoint {
     name: "spectral.fft"
+    deprecation_version: 2
   }
   endpoint {
     name: "fft"

tensorflow/core/api_def/python_api/api_def_FFT2D.pbtxt

@@ -1,9 +1,14 @@
 op {
   graph_op_name: "FFT2D"
+  endpoint {
+    name: "signal.fft2d"
+  }
   endpoint {
     name: "spectral.fft2d"
+    deprecation_version: 2
   }
   endpoint {
     name: "fft2d"
+    deprecation_version: 2
   }
 }

tensorflow/core/api_def/python_api/api_def_FFT3D.pbtxt

@@ -1,9 +1,14 @@
 op {
   graph_op_name: "FFT3D"
+  endpoint {
+    name: "signal.fft3d"
+  }
   endpoint {
     name: "spectral.fft3d"
+    deprecation_version: 2
   }
   endpoint {
     name: "fft3d"
+    deprecation_version: 2
   }
 }

tensorflow/core/api_def/python_api/api_def_IFFT.pbtxt

@@ -1,7 +1,11 @@
 op {
   graph_op_name: "IFFT"
+  endpoint {
+    name: "signal.ifft"
+  }
   endpoint {
     name: "spectral.ifft"
+    deprecation_version: 2
   }
   endpoint {
     name: "ifft"

tensorflow/core/api_def/python_api/api_def_IFFT2D.pbtxt

@@ -1,9 +1,14 @@
 op {
   graph_op_name: "IFFT2D"
+  endpoint {
+    name: "signal.ifft2d"
+  }
   endpoint {
     name: "spectral.ifft2d"
+    deprecation_version: 2
   }
   endpoint {
     name: "ifft2d"
+    deprecation_version: 2
   }
 }

tensorflow/core/api_def/python_api/api_def_IFFT3D.pbtxt

@@ -1,9 +1,14 @@
 op {
   graph_op_name: "IFFT3D"
+  endpoint {
+    name: "signal.ifft3d"
+  }
   endpoint {
     name: "spectral.ifft3d"
+    deprecation_version: 2
   }
   endpoint {
     name: "ifft3d"
+    deprecation_version: 2
   }
 }

tensorflow/python/tools/api/generator/api_init_files.bzl

@@ -71,12 +71,12 @@ TENSORFLOW_API_INIT_FILES = [
     "profiler/__init__.py",
     "quantization/__init__.py",
     "random/__init__.py",
-    "strings/__init__.py",
     "saved_model/__init__.py",
     "sets/__init__.py",
     "signal/__init__.py",
     "sparse/__init__.py",
     "spectral/__init__.py",
+    "strings/__init__.py",
     "summary/__init__.py",
     "sysconfig/__init__.py",
     "test/__init__.py",

tensorflow/python/tools/api/generator/api_init_files_v1.bzl

@@ -77,7 +77,6 @@ TENSORFLOW_API_INIT_FILES_V1 = [
     "quantization/__init__.py",
     "random/__init__.py",
     "resource_loader/__init__.py",
-    "signal/__init__.py",
     "strings/__init__.py",
     "saved_model/__init__.py",
     "saved_model/builder/__init__.py",
@@ -90,6 +89,7 @@ TENSORFLOW_API_INIT_FILES_V1 = [
     "saved_model/tag_constants/__init__.py",
     "saved_model/utils/__init__.py",
     "sets/__init__.py",
+    "signal/__init__.py",
     "sparse/__init__.py",
     "spectral/__init__.py",
     "summary/__init__.py",

tensorflow/tools/api/golden/v1/tensorflow.signal.pbtxt

@@ -1,5 +1,17 @@
 path: "tensorflow.signal"
 tf_module {
+  member_method {
+    name: "fft"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "fft2d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "fft3d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
   member_method {
     name: "frame"
     argspec: "args=[\'signal\', \'frame_length\', \'frame_step\', \'pad_end\', \'pad_value\', \'axis\', \'name\'], varargs=None, keywords=None, defaults=[\'False\', \'0\', \'-1\', \'None\'], "
@@ -12,6 +24,18 @@ tf_module {
     name: "hann_window"
     argspec: "args=[\'window_length\', \'periodic\', \'dtype\', \'name\'], varargs=None, keywords=None, defaults=[\'True\', \"<dtype: \'float32\'>\", \'None\'], "
   }
+  member_method {
+    name: "ifft"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "ifft2d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "ifft3d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
   member_method {
     name: "inverse_stft"
     argspec: "args=[\'stfts\', \'frame_length\', \'frame_step\', \'fft_length\', \'window_fn\', \'name\'], varargs=None, keywords=None, defaults=[\'None\', \'<function hann_window instance>\', \'None\'], "

tensorflow/tools/api/golden/v2/tensorflow.pbtxt

@@ -716,14 +716,6 @@ tf_module {
     name: "eye"
     argspec: "args=[\'num_rows\', \'num_columns\', \'batch_shape\', \'dtype\', \'name\'], varargs=None, keywords=None, defaults=[\'None\', \'None\', \"<dtype: \'float32\'>\", \'None\'], "
   }
-  member_method {
-    name: "fft2d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "fft3d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
   member_method {
     name: "fill"
     argspec: "args=[\'dims\', \'value\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
@@ -812,14 +804,6 @@ tf_module {
     name: "identity_n"
     argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
   }
-  member_method {
-    name: "ifft2d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "ifft3d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
   member_method {
     name: "import_graph_def"
     argspec: "args=[\'graph_def\', \'input_map\', \'return_elements\', \'name\', \'op_dict\', \'producer_op_list\'], varargs=None, keywords=None, defaults=[\'None\', \'None\', \'None\', \'None\', \'None\'], "

tensorflow/tools/api/golden/v2/tensorflow.signal.pbtxt

@@ -1,5 +1,17 @@
 path: "tensorflow.signal"
 tf_module {
+  member_method {
+    name: "fft"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "fft2d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "fft3d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
   member_method {
     name: "frame"
     argspec: "args=[\'signal\', \'frame_length\', \'frame_step\', \'pad_end\', \'pad_value\', \'axis\', \'name\'], varargs=None, keywords=None, defaults=[\'False\', \'0\', \'-1\', \'None\'], "
@@ -12,6 +24,18 @@ tf_module {
     name: "hann_window"
     argspec: "args=[\'window_length\', \'periodic\', \'dtype\', \'name\'], varargs=None, keywords=None, defaults=[\'True\', \"<dtype: \'float32\'>\", \'None\'], "
   }
+  member_method {
+    name: "ifft"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "ifft2d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
+  member_method {
+    name: "ifft3d"
+    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
+  }
   member_method {
     name: "inverse_stft"
     argspec: "args=[\'stfts\', \'frame_length\', \'frame_step\', \'fft_length\', \'window_fn\', \'name\'], varargs=None, keywords=None, defaults=[\'None\', \'<function hann_window instance>\', \'None\'], "

tensorflow/tools/api/golden/v2/tensorflow.spectral.pbtxt

@@ -4,34 +4,10 @@ tf_module {
     name: "dct"
     argspec: "args=[\'input\', \'type\', \'n\', \'axis\', \'norm\', \'name\'], varargs=None, keywords=None, defaults=[\'2\', \'None\', \'-1\', \'None\', \'None\'], "
   }
-  member_method {
-    name: "fft"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "fft2d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "fft3d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
   member_method {
     name: "idct"
     argspec: "args=[\'input\', \'type\', \'n\', \'axis\', \'norm\', \'name\'], varargs=None, keywords=None, defaults=[\'2\', \'None\', \'-1\', \'None\', \'None\'], "
   }
-  member_method {
-    name: "ifft"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "ifft2d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
-  member_method {
-    name: "ifft3d"
-    argspec: "args=[\'input\', \'name\'], varargs=None, keywords=None, defaults=[\'None\'], "
-  }
   member_method {
     name: "irfft"
     argspec: "args=[\'input_tensor\', \'fft_length\', \'name\'], varargs=None, keywords=None, defaults=[\'None\', \'None\'], "