[FFmpeg-devel] [PATCH 1/4] configure: add fftw3 detection

[Ganesh Ajjanagadde]

Useful for fast FFT computation: http://www.fftw.org/.

Signed-off-by: Ganesh Ajjanagadde <gajjanag at gmail.com>
---
 configure | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure b/configure
index 0987bcd..9a9a36d 100755
--- a/configure
+++ b/configure
@@ -222,6 +222,7 @@ External library support:
   --enable-libdcadec       enable DCA decoding via libdcadec [no]
   --enable-libfaac         enable AAC encoding via libfaac [no]
   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
+  --enable-libfftw3        enable FFT computation via libfftw3 [no]
   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
@@ -1471,6 +1472,7 @@ EXTERNAL_LIBRARY_LIST="
     libdcadec
     libfaac
     libfdk_aac
+    libfftw3
     libflite
     libfontconfig
     libfreetype
@@ -4937,6 +4939,7 @@ die_license_disabled_gpl() {
 
 die_license_disabled gpl frei0r
 die_license_disabled gpl libcdio
+die_license_disabled gpl libfftw3
 die_license_disabled gpl librubberband
 die_license_disabled gpl libsmbclient
 die_license_disabled gpl libutvideo
@@ -5536,6 +5539,7 @@ enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersio
 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
                                  warn "using libfdk without pkg-config"; } }
+enabled libfftw3          && require2 libfftw3f "fftw3.h" fftwf_execute -lfftw3f -lm
 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
 enabled fontconfig        && enable libfontconfig
-- 
2.7.4