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• buffersrc : default SAR to 0 (unknown) rather than 1

  12 février 2016, par Anton Khirnov

  buffersrc : default SAR to 0 (unknown) rather than 1
  It makes more sense to not claim anything about the SAR if we don’t know
  
  anything. No changes in the FATE tests, since this is what avconv ends
  
  up doing anyway.
  

  • [DBH] libavfilter/buffersrc.c

• avformat/icodec : ico probe with unknown data

  16 février 2016, par Mark Harris

  avformat/icodec : ico probe with unknown data
  Fix cases where unknown data (data beyond p->buf_size) could produce a
  
  higher ico probe score than if the unknown data was known and valid.
  
  For example :
  
      Header :  OK, 2 frames
  
      Frame 0 : Unknown (offset points beyond end of probe buffer)
  
      Frame 1 : Invalid
  
  Previously this example had a score of 25, even though the score would
  
  be 1 if the unknown frame was known to be valid or 0 if it was known
  
  to be invalid.  For this example the score is now 1.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/icodec.c

• Android ndk ffmpeg : Unknown mnemonic error

  1er juin 2016, par Wasabi.Mayo

  I’m building a simple video app and want to embed a watermark on the recorded videos. I am using ffmpeg for this process and have successfully compiled it. The issue is when I try to link it with my project in Android Studio using ndk-build.cmd command, it gives me the following error :

  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s: Assembler messages:
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8547: Error: unknown mnemonic `itt' -- `itt gt'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8548: Error: unknown mnemonic `movgt' -- `movgt x25,x0'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8549: Error: unknown mnemonic `movgt' -- `movgt x0,x1'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8551: Error: unknown mnemonic `it' -- `it le'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8552: Error: unknown mnemonic `movle' -- `movle x0,x2'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8554: Error: unknown mnemonic `it' -- `it gt'
  
  C:\Users\MyPC\AppData\Local\Temp\ccIRLDZn.s:8555: Error: unknown mnemonic `movgt' -- `movgt x25,x0'
  
  make: *** [obj/local/arm64-v8a/objs/myProject_Videokit/ffmpeg.o] Error 1

  My development environment is

  • OS : Windows10 x86_64
  • Command line : Cygwin 64bit
  • Android NDK version : android-ndk-r11c
  • ffmpeg version : ffmpeg-3.0.2
  • Android Studio : 2.1.1

  First, I installed Cygwin64bit and added ’make’, ’dos2unix’, ’c++ gcc’ packages. And I decompressed ffmpeg folder in C :/android-ndk-r11c/sources. This is the build script I used.

  config.sh

  #!/bin/bash
  
  NDK=C:/android-ndk-r11c
  
  SYSROOT=$NDK/platforms/android-9/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64
  
  
  
  #I used cygpath to avoid path errors in Cygwin. 
  
  
  
  CUR="$(cygpath -m "$(pwd)")" 
  
  TEMPDIR="$(cygpath -m "/tmp")"
  
  TMP="$(cygpath -m "/tmp")"
  
  TMPDIR="$(cygpath -m "/tmp")"
  
  CPU=arm
  
  PREFIX=$CUR/android/$CPU 
  
  ADDI_CFLAGS="-marm"
  
  
  
  ./configure 
  
      --prefix=$PREFIX 
  
      --enable-shared 
  
      --disable-static 
  
      --disable-doc 
  
      --disable-ffmpeg 
  
      --disable-ffplay 
  
      --disable-ffprobe 
  
      --disable-ffserver 
  
      --disable-doc 
  
      --disable-symver 
  
      --enable-protocol=concat
  
      --enable-protocol=file
  
      --enable-muxer=mp4
  
      --enable-demuxer=mpegts
  
      --enable-memalign-hack
  
      --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
  
  make clean
  
  make
  
  make install

  I ran this .sh in Cygwin(as administrator) but it didn’t work. So I typed each of those lines on Cygwin and it compiled successfully. I tried both --target-os=android and --target-os=linux, but both didn’t solve the problem above.

  Then I followed this tutorial (enoent.fr/blog/2014/06/20/compile-ffmpeg-for-android/). Based on that, I made a native method in my project and built header file and c file.(To do that, I followed this video. youtube.com/watch ?v=kFtxo7rr2HQ)

  After that, I cloned this repo(github.com/HikoQiu/JNI_INVOKE_FFMPEG) and copied - pasted the jni folder into my project. And after making the Android.mk and Application.mk, I ran the C :/android-ndk-r11c/ndk-build.cmd in the Android Studio terminal and it gave me the error above.

  These are the Makefiles I used.

  myProject/app/src/main/jni/Android.mk

  LOCAL_PATH := $(call my-dir)
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE    := com_example_project_Videokit
  
  LOCAL_LDLIBS := -llog -ljnigraphics -lz
  
  LOCAL_CFLAGS := -Wdeprecated-declarations
  
  ANDROID_LIB := -landroid
  
  LOCAL_C_INCLUDES := C:\android-ndk-r11c\sources\ffmpeg-3.0.2
  
  LOCAL_SRC_FILES := com_example_project_Videokit.c ffmpeg.c ffmpeg_filter.c ffmpeg_opt.c cmdutils.c
  
  LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil
  
  include $(BUILD_SHARED_LIBRARY)
  
  $(call import-module,ffmpeg-3.0.2/android/arm)

  myProject/app/src/main/jni/Application.mk

  APP_ABI := all

  C :/android-ndk-r11c/sources/ffmpeg-3.0.2/android/arm/Android.mk

  LOCAL_PATH:= $(call my-dir)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libavcodec
  
  LOCAL_SRC_FILES:= lib/libavcodec-57.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libavformat
  
  LOCAL_SRC_FILES:= lib/libavformat-57.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libswscale
  
  LOCAL_SRC_FILES:= lib/libswscale-4.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libavutil
  
  LOCAL_SRC_FILES:= lib/libavutil-55.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libavfilter
  
  LOCAL_SRC_FILES:= lib/libavfilter-6.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= libwsresample
  
  LOCAL_SRC_FILES:= lib/libswresample-2.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
  
  include $(PREBUILT_SHARED_LIBRARY)

  And this is my project structure so far. com_example_myProjct.c is the file that I used as a moduleName in build.gradle file and as LOCAL_MODULE in Android.mk .

  app
  
   - build
  
   - libs
  
   - src
  
     - androidTest
  
     - main
  
       - java
  
          -com.example.myProject
  
            -MainActivity
  
            -Videokit   //this is the class where I called the native method.
  
       - jni
  
          -Android.mk
  
          -Application.mk
  
          -cmdutils.c
  
          -cmdutils.h
  
          -com_example_myProject.c
  
          -com_example_myProject.h
  
          -ffmpeg.c
  
          -ffmpeg.h
  
          -ffmpeg_filter.c
  
          -ffmpeg_opt.c
  
          -ffmpeg_opt.h
  
          -logjam.h
  
     - obj
  
     - res
  
     AndroidManifest.xml
  
   - test 

  app/gradle.build

  apply plugin: 'com.android.application'
  
  
  
  android {
  
      compileSdkVersion 23
  
      buildToolsVersion "23.0.2"
  
  
  
      defaultConfig {
  
          applicationId "com.example.myProjct"
  
          minSdkVersion 14
  
          targetSdkVersion 23
  
          versionCode 1
  
          versionName "1.0.0"
  
  
  
          ndk {
  
              moduleName "com_example_myProjet_Videokit"
  
          }
  
          sourceSets.main {
  
              jni.srcDirs = []
  
              jniLibs.srcDir 'src/main/libs'
  
          }
  
      }
  
  
  
      buildTypes {
  
          release {
  
              minifyEnabled false
  
              proguardFiles getDefaultProguardFile('proguard-rules.txt'), 'proguard-rules.pro'
  
          }
  
      }
  
  }
  
  
  
  dependencies {
  
      compile fileTree(dir: 'libs', include: ['*.jar'])
  
      testCompile 'junit:junit:4.12'
  
      compile 'com.android.support:appcompat-v7:23.4.0'
  
  }

  Any ideas ?