Add AudioSpectrogram op to TensorFlow for audio feature generation

Change: 152332221

1 files changed, 36 insertions, 0 deletions

diff --git a/third_party/fft2d/fft2d.BUILD b/third_party/fft2d/fft2d.BUILD
new file mode 100644
index 0000000000..3dbd36aec0
--- /dev/null
+++ b/third_party/fft2d/fft2d.BUILD
@@ -0,0 +1,36 @@
+# 2D Fast Fourier Transform package
+# from http://momonga.t.u-tokyo.ac.jp/~ooura/fft.html
+
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+# Unrestricted use; can only distribute original package.
+licenses(["notice"])
+
+exports_files(["fft/readme.txt"])
+
+FFT2D_SRCS = [
+    "fft/fftsg.c",
+]
+
+# This is the main 2D FFT library.  The 2D FFTs in this library call
+# 1D FFTs.  In addition, fast DCTs are provided for the special case
+# of 8x8 and 16x16.  This code in this library is referred to as
+# "Version II" on http://momonga.t.u-tokyo.ac.jp/~ooura/fft.html.
+cc_library(
+    name = "fft2d",
+    srcs = FFT2D_SRCS,
+    linkopts = ["-lm"],
+)
+
+objc_library(
+    name = "fft2d_ios",
+    srcs = FFT2D_SRCS,
+)
+
+# Export the source code so that it could be compiled for Andoid native apps.
+filegroup(
+    name = "fft2d_srcs",
+    srcs = FFT2D_SRCS,
+)