Recherche avancée

Sur d’autres sites (5720)

• arm-linux-androideabi/bin/ld : error : cannot find -lpolarssl while compiling rtmp library for Android (host os -Debian)

  24 octobre 2014, par trololo

  I’m trying to build rtmp library for ffmpeg for my Android app.
  In order to compile ffmpeg I have to compile rtmp-library.
  For librtmp.a I need to compile polarssl. I got polarssl library (libpolarssl, -lpolarssl)
  script for polarssl :

   #!/bin/bash
  
  ANDROID_NDK=/home/sla/work/android-ndk-r10b86/android-ndk-r10b/
  
  TOOLCHAIN=/home/sla/ffmpeg_build/polarssl/
  
  $ANDROID_NDK/build/tools/make-standalone-toolchain.sh --toolchain=arm-linux-androideabi-4.8 \
  
    --system=linux-x86 --platform=android-3 --install-dir=$TOOLCHAIN
  
  cd /home/sla/ffmpeg_sources/polarssl-1.2.11
  
  
  
  export CROSS_COMPILE=arm-linux-androideabi
  
  export CC="${CROSS_COMPILE}-gcc"
  
  export CXX="${CROSS_COMPILE}-g++"
  
  
  
  export PATH=$TOOLCHAIN/bin:$PATH
  
  #export CC="arm-linux-androideabi-gcc"
  
  #export CXX="arm-linux-androideabi-g++"
  
  export LD=arm-linux-androideabi-ld
  
  export STRIP=arm-linux-androideabi-strip
  
  
  
  export CFLAGS="-std=c99 -O3 -Wall -mthumb -pipe -fpic -fasm \
  
    -march=armv7-a -mfpu=neon -mfloat-abi=hard -mvectorize-with-neon-quad \
  
    -finline-limit=300 -ffast-math -fmodulo-sched -fmodulo-sched-allow-regmoves \
  
    -mhard-float -D_NDK_MATH_NO_SOFTFP=1 -fdiagnostics-color=always \
  
    -Wno-psabi -Wa,--noexecstack \
  
    -D__ARM_ARCH_5__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5TE__ \
  
    -DANDROID -DNDEBUG"
  
  
  
  export LDFLAGS="-lm_hard -lz -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--fix-cortex-a8 -Wl,--no-warn-mismatch"
  
  #cd /home/sla/ffmpeg_sources
  
  #autoreconf -fiv
  
  #./configure --host=arm-linux-androideabi --prefix="`pwd`/build/"
  
  #--disable-shared
  
  #rm -r build
  
  make lib -j7 SYS=android CC="$CC" APP=
  
  make install DESTDIR=/home/sla/ffmpeg_sources/polarssl

  It works fine and creates correspond lirary but when I try to compile rtmplib (rtmpdump) using script

  #!/bin/bash
  
  ANDROID_NDK=/home/sla/work/android-ndk-r10b86/android-ndk-r10b/
  
  TOOLCHAIN=/home/sla/ffmpeg_build/rtmp/
  
  $ANDROID_NDK/build/tools/make-standalone-toolchain.sh --toolchain=arm-linux-androideabi-4.8 \
  
    --system=linux-x86 --platform=android-3 --install-dir=$TOOLCHAIN
  
  cd /home/sla/ffmpeg_sources/rtmpdump
  
  
  
  export CROSS_COMPILE=arm-linux-androideabi
  
  #export CC=${CROSS_COMPILE}-gcc
  
  #export CXX=${CROSS_COMPILE}-g++
  
  
  
  export PATH=$TOOLCHAIN/bin:$PATH
  
  export CC="arm-linux-androideabi-gcc"
  
  export CXX="arm-linux-androideabi-g++"
  
  export LD=arm-linux-androideabi-ld
  
  export STRIP=arm-linux-androideabi-strip
  
  
  
  export CFLAGS="-std=c99 -O3 -Wall -mthumb -pipe -fpic -fasm \
  
    -march=armv7-a -mfpu=neon -mfloat-abi=hard -mvectorize-with-neon-quad \
  
    -finline-limit=300 -ffast-math -fmodulo-sched -fmodulo-sched-allow-regmoves \
  
    -mhard-float -D_NDK_MATH_NO_SOFTFP=1 -fdiagnostics-color=always \
  
    -Wno-psabi -Wa,--noexecstack \
  
    -D__ARM_ARCH_5__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5TE__ \
  
    -DANDROID -DNDEBUG"
  
  
  
  export LDFLAGS="-lm_hard -lz -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--fix-cortex-a8 -Wl,--no-warn-mismatch"
  
  #cd /home/sla/ffmpeg_sources
  
  #autoreconf -fiv
  
  #./configure --host=arm-linux-androideabi --prefix="`pwd`/build/"
  
  #--disable-shared
  
  rm -r build
  
  make -j7 SYS=android CROSS_COMPILE=arm-linux-androideabi- INC="-I/home/sla/ffmpeg_sources/polarssl-1.2.11/include/ -L/home/sla/ffmpeg_sources/polarssl-1.2.11/library/" CRYPTO=POLARSSL SHARED=
  
  make install
  
  make distclean

  I recieve such error :

  /home/sla/ffmpeg_build/rtmp/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lpolarssl

  More :

  Copying prebuilt binaries...
  
  Copying sysroot headers and libraries...
  
  Copying c++ runtime headers and libraries...
  
  Copying files to: /home/sla/ffmpeg_build/rtmp/
  
  Cleaning up...
  
  Done.
  
  rm: cannot remove `build': No such file or directory
  
  make[1]: Entering directory `/home/sla/ffmpeg_sources/rtmpdump/librtmp'
  
  make[1]: Nothing to be done for `all'.
  
  make[1]: Leaving directory `/home/sla/ffmpeg_sources/rtmpdump/librtmp'
  
  arm-linux-androideabi-gcc -Wall  -o rtmpdump rtmpdump.o -Llibrtmp -lrtmp -lpolarssl -lz  
  
  arm-linux-androideabi-gcc -Wall  -o rtmpgw rtmpgw.o thread.o  -Llibrtmp -lrtmp -lpolarssl -lz  
  
  arm-linux-androideabi-gcc -Wall  -o rtmpsrv rtmpsrv.o thread.o  -Llibrtmp -lrtmp -lpolarssl -lz  
  
  arm-linux-androideabi-gcc -Wall  -o rtmpsuck rtmpsuck.o thread.o  -Llibrtmp -lrtmp -lpolarssl -lz  
  
  /home/sla/ffmpeg_build/rtmp/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lpolarssl
  
  librtmp/librtmp.a(rtmp.o):rtmp.c:function isValidPublicKey: error: undefined reference to 'mpi_init'
  
  librtmp/librtmp.a(rtmp.o):rtmp.c:function isValidPublicKey: error: undefined reference to 'mpi_lset'
  
  librtmp/librtmp.a(rtmp.o):rtmp.c:function isValidPublicKey: error: undefined reference to 'mpi_cmp_mpi'
  
  librtmp/librtmp.a(rtmp.o):/rtmp.c:function homeisValidPublicKey/:sla /errorffmpeg_build:/ rtmpundefined/ binreference/ .to. /'libmpi_copy/'gcc
  
  /librtmparm/-librtmp.alinux(-rtmp.oandroideabi)/:4.8rtmp.c/:.function. /isValidPublicKey.:. /error.:. /undefined. .reference/ armto- linux'-mpi_sub_intandroideabi'/
  
  binlibrtmp//ldlibrtmp.a:( rtmp.oerror):: rtmp.ccannot: functionfind  isValidPublicKey-:lpolarssl 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_cmp_mpi 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'isValidPublicKeympi_init:' 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_exp_mod 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'isValidPublicKeympi_lset:' 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_cmp_int 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'isValidPublicKeympi_cmp_mpi:' 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_free 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'DHGenerateKeympi_copy:' 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_copy 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'DHGenerateKeympi_sub_int:' 
  
  errorlibrtmp:/ librtmp.aundefined( rtmp.oreference) :tortmp.c :'functionmpi_copy 'isValidPublicKey
  
  :librtmp /errorlibrtmp.a:( rtmp.oundefined) :referencertmp.c :tofunction  'DHGenerateKeympi_cmp_mpi:' 

  ETC..... A LOT OF ERRORS

  Hot to fix this error ?

• Error compiling x264 on Mac OS X

  28 mars 2014, par progdo

  I’m trying to compile and install the x264 H.264/AVC encoder.
  I’ve got gcc installed. But I get the ’No working C compiler found’ error when I run :

  ./configure --enable-shared --enable-static

  What can I do ?

  The config log said :

  /bin/gcc conftest.c  -Wall -I. -I$(SRCPATH) -falign-loops=16 -mdynamic-no-pic -o conftest
  
  clang: error: unknown argument: '-falign-loops=16' [-Wunused-command-line-argument-hard-error-in-future]
  
  clang: note: this will be a hard error (cannot be downgraded to a warning) in the future

• Treating a video stream as playback with pausing

  21 janvier 2020, par kealist

  I am working on an application that streams multiple h264 video streams to a video wall. I am using libav/ffmpeg libs to stream multiple video files at once from inside the application. The application will control playback speed, seeking, pausing, resuming, stopping, and the video wall will only be receiving udp streams.

  I want to implement streaming such that if the videos are paused, the same frame is sent continually so that it looks as if it is a video window in a paused state.

  How can i insert copies of the same h264 frame into the stream so that it does not mess up sending of later frames ?

  My code is almost an exact port of transcoding.c from ffmpeg.exe. Planning on retaining a copy of the last frame/packet, and when paused to send this. Is this likely to function properly, or should I approach this a different way.

  while (true)
  
  {
  
      if (paused) {
  
          // USE LAST PACKET
  
      }
  
      else 
  
      {
  
          if ((ret = ffmpeg.av_read_frame(ifmt_ctx, &packet)) < 0)
  
              break;
  
      }
  
      stream_index = packet.stream_index;
  
  
  
      type = ifmt_ctx->streams[packet.stream_index]->codec->codec_type;
  
      Console.WriteLine("Demuxer gave frame of stream_index " + stream_index);
  
      if (filter_ctx[stream_index].filter_graph != null)
  
      {
  
          Console.WriteLine("Going to reencode&filter the frame\n");
  
          frame = ffmpeg.av_frame_alloc();
  
          if (frame == null)
  
          {
  
              ret = ffmpeg.AVERROR(ffmpeg.ENOMEM);
  
              break;
  
          }
  
  
  
          packet.dts = ffmpeg.av_rescale_q_rnd(packet.dts,
  
                  ifmt_ctx->streams[stream_index]->time_base,
  
                  ifmt_ctx->streams[stream_index]->codec->time_base,
  
                  AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);
  
          packet.pts = ffmpeg.av_rescale_q_rnd(packet.pts,
  
                  ifmt_ctx->streams[stream_index]->time_base,
  
                  ifmt_ctx->streams[stream_index]->codec->time_base,
  
                  AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);
  
  
  
  
  
  
  
          if (type == AVMediaType.AVMEDIA_TYPE_VIDEO)
  
          {
  
  
  
              ret = ffmpeg.avcodec_decode_video2(stream_ctx[packet.stream_index].dec_ctx, frame,
  
                  &got_frame, &packet); 
  
  
  
          }
  
          else
  
          {
  
              ret = ffmpeg.avcodec_decode_audio4(stream_ctx[packet.stream_index].dec_ctx, frame,
  
                  &got_frame, &packet);
  
          }
  
          if (ret < 0)
  
          {
  
              ffmpeg.av_frame_free(&frame);
  
              Console.WriteLine("Decoding failed\n");
  
              break;
  
          }
  
          if (got_frame != 0)
  
          {
  
              frame->pts = ffmpeg.av_frame_get_best_effort_timestamp(frame);
  
              ret = filter_encode_write_frame(frame, (uint)stream_index);
  
              // SAVE LAST FRAME/PACKET HERE
  
              ffmpeg.av_frame_free(&frame);
  
              if (ret < 0)
  
                  goto end;
  
          }
  
          else
  
          {
  
              ffmpeg.av_frame_free(&frame);
  
          }
  
      }
  
      else
  
      {
  
          /* remux this frame without reencoding */
  
          packet.dts = ffmpeg.av_rescale_q_rnd(packet.dts,
  
                  ifmt_ctx->streams[stream_index]->time_base,
  
                  ofmt_ctx->streams[stream_index]->time_base,
  
                  AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);
  
          packet.pts = ffmpeg.av_rescale_q_rnd(packet.pts,
  
                  ifmt_ctx->streams[stream_index]->time_base,
  
                  ofmt_ctx->streams[stream_index]->time_base,
  
                  AVRounding.AV_ROUND_NEAR_INF | AVRounding.AV_ROUND_PASS_MINMAX);
  
          ret = ffmpeg.av_interleaved_write_frame(ofmt_ctx, &packet);
  
          if (ret < 0)
  
              goto end;
  
      }
  
      ffmpeg.av_free_packet(&packet);
  
  }