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• ffmpeg android porting help me

  13 février 2018, par Mr.Han

  My development environment is Windows10 - 64bit .
  It is set to Android development environment
  I am trying to compile ffmpeg.
  I installed cygwin and installed cygwin.
  gcc related all, dos2unix, make, automake.
  ffmpeg version is 3-2.10.

  1. configure file
     Before

     SLIBNAME_WITH_MAJOR=’$(SLIBNAME).$(LIBMAJOR)’
     LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"’
     SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_VERSION)’
     SLIB_INSTALL_LINKS=’$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’

  After

  SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
  
  LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
  
  SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
  
  SLIB_INSTALL_LINKS='$(SLIBNAME)'

  2. build_android.sh

      !/bin/bash

     NDK=c :/Users/storm/AppData/Local/Android/Sdk/ndk-bundle
     SYSROOT=$NDK/platforms/android-16/arch-arm/
     TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64
     CUR=cygpath -m $(pwd)
     TEMPDIR=cygpath -m /tmp
     TMP=cygpath -m /tmp
     function build_one
     
     sed -i ’s/ln_s="ln -s -f"/ln_s="cp -f"/g’ ./configure
     ./configure \
     — prefix=$PREFIX \
     — enable-shared \
     — disable-static \
     — disable-doc \
     — disable-ffmpeg \
     — disable-ffplay \
     — disable-ffprobe \
     — disable-ffserver \
     — disable-avdevice \
     — disable-doc\
     — disable-symver \
     — cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
     — target-os=linux \
     — arch=arm \
     — enable-cross-compile \
     — sysroot=$SYSROOT \
     — extra-cflags="-Os -fpic $ADDI_CFLAGS" \
     — extra-ldflags="$ADDI_LDFLAGS"\
     $ADDITIONAL_CONFIGURE_FLAG
     sed -i’:a ;N ;$ !ba ;s/gcc 4.9\r/gcc 4.9/g’ ./config.h
     sed -i’:a ;N ;$ !ba ;s/gcc 4.9\r/gcc 4.9/g’ ./config.mak

     make clean

     make

     make install

     
     CPU=arm
     PREFIX=$CUR/android/$CPU
     ADDI_CFLAGS="-marm"
     build_one

  Where is the problem ?
  Please help me.

• Merge commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’

  5 mai 2013, par Michael Niedermayer

  Merge commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’
  * commit ’6fee1b90ce3bf4fbdfde7016e0890057c9000487’ :
  
    avcodec : Add av_cold attributes to init functions missing them
  Conflicts :
  
  	libavcodec/aacpsy.c
  
  	libavcodec/atrac3.c
  
  	libavcodec/dvdsubdec.c
  
  	libavcodec/ffv1.c
  
  	libavcodec/ffv1enc.c
  
  	libavcodec/h261enc.c
  
  	libavcodec/h264_parser.c
  
  	libavcodec/h264dsp.c
  
  	libavcodec/h264pred.c
  
  	libavcodec/libschroedingerenc.c
  
  	libavcodec/libxvid_rc.c
  
  	libavcodec/mpeg12.c
  
  	libavcodec/mpeg12enc.c
  
  	libavcodec/proresdsp.c
  
  	libavcodec/rangecoder.c
  
  	libavcodec/videodsp.c
  
  	libavcodec/x86/proresdsp_init.c
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/aacpsy.c
  • [DH] libavcodec/ac3enc.c
  • [DH] libavcodec/atrac3.c
  • [DH] libavcodec/audio_frame_queue.c
  • [DH] libavcodec/avfft.c
  • [DH] libavcodec/bgmc.c
  • [DH] libavcodec/bink.c
  • [DH] libavcodec/binkdsp.c
  • [DH] libavcodec/dcadsp.c
  • [DH] libavcodec/dnxhdenc.c
  • [DH] libavcodec/dsputil.c
  • [DH] libavcodec/dvdsubdec.c
  • [DH] libavcodec/eac3enc.c
  • [DH] libavcodec/ffv1.c
  • [DH] libavcodec/ffv1enc.c
  • [DH] libavcodec/flac_parser.c
  • [DH] libavcodec/h261enc.c
  • [DH] libavcodec/h264_parser.c
  • [DH] libavcodec/h264chroma.c
  • [DH] libavcodec/h264dsp.c
  • [DH] libavcodec/h264pred.c
  • [DH] libavcodec/h264qpel.c
  • [DH] libavcodec/iirfilter.c
  • [DH] libavcodec/ituh263dec.c
  • [DH] libavcodec/ituh263enc.c
  • [DH] libavcodec/ivi_common.c
  • [DH] libavcodec/libschroedinger.c
  • [DH] libavcodec/libschroedingerenc.c
  • [DH] libavcodec/libxvid_rc.c
  • [DH] libavcodec/mlpdsp.c
  • [DH] libavcodec/mpc.c
  • [DH] libavcodec/mpeg12.c
  • [DH] libavcodec/mpeg12enc.c
  • [DH] libavcodec/mpeg4videoenc.c
  • [DH] libavcodec/mpegaudiodec.c
  • [DH] libavcodec/mpegaudiodsp.c
  • [DH] libavcodec/mpegaudiodsp_template.c
  • [DH] libavcodec/mpegvideo.c
  • [DH] libavcodec/msmpeg4enc.c
  • [DH] libavcodec/pngdsp.c
  • [DH] libavcodec/proresdsp.c
  • [DH] libavcodec/ralf.c
  • [DH] libavcodec/rangecoder.c
  • [DH] libavcodec/ratecontrol.c
  • [DH] libavcodec/roqvideoenc.c
  • [DH] libavcodec/sipr16k.c
  • [DH] libavcodec/utils.c
  • [DH] libavcodec/vc1.c
  • [DH] libavcodec/vc1_parser.c
  • [DH] libavcodec/videodsp.c
  • [DH] libavcodec/vorbisdsp.c
  • [DH] libavcodec/vp56dsp.c
  • [DH] libavcodec/wma.c
  • [DH] libavcodec/wmadec.c
  • [DH] libavcodec/wmaenc.c
  • [DH] libavcodec/x86/h264chroma_init.c
  • [DH] libavcodec/x86/proresdsp_init.c

• Audio effect ( a 20ms delay between right and the left channel) using Web Audio API or any Javascript Audio Library like howler.js, tone.js ?

  15 juillet 2020, par questionare_101

  I was wondering if there any option in howler.js, tone.js or any other javascript audio library which I can use to add a 20ms delay between the right and the left channel which makes the audio listening experience more immersive.

  


  Can it be achieved using Audio sprites with howler.js ? (but I guess it can't separate the right and the left channels)
https://medium.com/game-development-stuff/how-to-create-audiosprites-to-use-with-howler-js-beed5d006ac1

  


  Is there any ?

  


  Have also asked the same quest here : https://github.com/goldfire/howler.js/issues/1374

  


  I usually enable this option under ffdshow audio processor while playing audio using MPC-HC (Mega Version) on my pc. I was wondering how can I do it using Web Audio API or howler.js ?

  


  

  


  Somewhat like this kind of effect : Just delay the either channel by 20ms
Like we do in Adobe Audition