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Sur d’autres sites (6247)

  • doc : Link to "Resampler Options" in the aresample documentation.

    2 mars 2017, par Carl Eugen Hoyos
    doc : Link to "Resampler Options" in the aresample documentation.
    
    • [DH] doc/filters.texi
  • Cant link against ffmpeg static build

    24 mars 2017, par David Barishev

    I have build ffmpeg libraries statically for x86 android using a custom configuration.Now i wanted to add them in my android project.

    Im using ffmpeg 3.2.git, android studio 2.3.

    I created a folder named distribution which had my binaries, and the minimum headers i needed for it to not tell me about missing header (Except for the avutil- i just included them all), located the root of my project.
    Here is a file tree :

    distribution
    ├── libavcodec
    │   ├── lib
    │   │   └── x86
    │   │       └── libavcodec.a
    │   ├── avcodec.h
    │   └── version.h
    ├── libavfilter
    │   ├── lib
    │   │   └── x86
    │   │       └── libavfilter.a
    │   ├── avfiltergraph.h
    │   └── avfilter.h
    ├── libavformat
    │   ├── lib
    │   │   └── x86
    │   │       └── libavformat.a
    │   ├── avformat.h
    │   ├── avio.h
    │   └── version.h
    ├── libavutil
    │   ├── lib
    │   │   └── x86
    │   │       └── libavutil.a
    │   ├── attributes.h
    │   ├── avconfig.h
    │   ├── avutil.h
    │   ├── buffer.h
    │   ├── buffer_internal.h
    │   ├── camellia.h
    │   ├── cast5.h
    │   ├── channel_layout.h
    │   ├── colorspace.h
    │   ├── color_utils.h
    │   ├── common.h
    │   ├── cpu.h
    │   ├── cpu_internal.h
    │   ├── crc.h
    │   ├── des.h
    │   ├── dict.h
    │   ├── display.h
    │   ├── downmix_info.h
    │   ├── dynarray.h
    │   ├── error.h
    │   ├── eval.h
    │   ├── ffmath.h
    │   ├── ffversion.h
    │   ├── fifo.h
    │   ├── file.h
    │   ├── fixed_dsp.h
    │   ├── float_dsp.h
    │   ├── frame.h
    │   ├── hash.h
    │   ├── hmac.h
    │   ├── hwcontext_cuda.h
    │   ├── hwcontext_cuda_internal.h
    │   ├── hwcontext_dxva2.h
    │   ├── hwcontext.h
    │   ├── hwcontext_internal.h
    │   ├── hwcontext_qsv.h
    │   ├── hwcontext_vaapi.h
    │   ├── hwcontext_vdpau.h
    │   ├── imgutils.h
    │   ├── integer.h
    │   ├── internal.h
    │   ├── intfloat.h
    │   ├── intmath.h
    │   ├── intreadwrite.h
    │   ├── lfg.h
    │   ├── libm.h
    │   ├── lls.h
    │   ├── log.h
    │   ├── lzo.h
    │   ├── macros.h
    │   ├── mastering_display_metadata.h
    │   ├── mathematics.h
    │   ├── md5.h
    │   ├── mem.h
    │   ├── mem_internal.h
    │   ├── motion_vector.h
    │   ├── murmur3.h
    │   ├── opencl.h
    │   ├── opencl_internal.h
    │   ├── opt.h
    │   ├── parseutils.h
    │   ├── pca.h
    │   ├── pixdesc.h
    │   ├── pixelutils.h
    │   ├── pixfmt.h
    │   ├── qsort.h
    │   ├── random_seed.h
    │   ├── rational.h
    │   ├── rc4.h
    │   ├── replaygain.h
    │   ├── reverse.h
    │   ├── ripemd.h
    │   ├── samplefmt.h
    │   ├── sha512.h
    │   ├── sha.h
    │   ├── softfloat.h
    │   ├── softfloat_ieee754.h
    │   ├── softfloat_tables.h
    │   ├── spherical.h
    │   ├── stereo3d.h
    │   ├── tablegen.h
    │   ├── tea.h
    │   ├── thread.h
    │   ├── threadmessage.h
    │   ├── timecode.h
    │   ├── time.h
    │   ├── time_internal.h
    │   ├── timer.h
    │   ├── timestamp.h
    │   ├── tree.h
    │   ├── twofish.h
    │   └── version.h
    └── libswresample
       ├── lib
       │   └── x86
       │       └── libswresample.a
       ├── swresample.h
       └── swresample_internal.h

    I edited my cmake to include the libraries :

    add_library(
            native-lib
            SHARED
            src/main/cpp/native-lib.cpp )

    set(distribution_DIR ${CMAKE_SOURCE_DIR}/../distribution)

    add_library(lib_avcodec STATIC IMPORTED)
    set_target_properties(lib_avcodec PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavcodec/lib/${ANDROID_ABI}/libavcodec.a)

    add_library(lib_avfilter STATIC IMPORTED)
    set_target_properties(lib_avfilter PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavfilter/lib/${ANDROID_ABI}/libavfilter.a)

    add_library(lib_avformat STATIC IMPORTED)
    set_target_properties(lib_avformat PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavformat/lib/${ANDROID_ABI}/libavformat.a)

    add_library(lib_avutil STATIC IMPORTED)
    set_target_properties(lib_avutil PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavutil/lib/${ANDROID_ABI}/libavutil.a)

    add_library(lib_swresample STATIC IMPORTED)
    set_target_properties(lib_swresample PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libswresample/lib/${ANDROID_ABI}/libswresample.a)


    include_directories(
                             ${distribution_DIR}
                             )


    target_link_libraries(
                          native-lib

                          lib_avcodec
                          lib_avfilter
                          lib_avformat
                          lib_avutil
                          lib_swresample
                           )

    I also restricted the build to only x86, in my app build.gradle :

    ndk {
               // Specifies the ABI configurations of your native
               // libraries Gradle should build and package with your APK.
               abiFilters 'x86'
       }

    The project gradle sync worked successfully.
    I wrote the following code in my cpp file :

    #include


    extern "C"{
       #include "libavformat/avformat.h"
    }
    JNIEXPORT void JNICALL
    Java_com_example_david_testffmpegcpp_MainActivity_stringFromJNI(
           JNIEnv *env,
           jobject /* this */) {

       av_register_all ();
       avformat_network_init ();


    }

    Just to check if the library works, but i cant seem to link against the libraries correctly. It complains about undefined symbols.
    What did i do wrong ?

    Error :

    [2/2] Linking CXX shared library

    ..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so
    FAILED: cmd.exe /C "cd . && D:\AndroidSDK\ndk-bundle\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe  --target=i686-none-linux-android --gcc-toolchain=D:/AndroidSDK/ndk-bundle/toolchains/x86-4.9/prebuilt/windows-x86_64 --sysroot=D:/AndroidSDK/ndk-bundle/platforms/android-16/arch-x86 -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security  -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security   -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  -llog ../../../../../distribution/libavcodec/lib/x86/libavcodec.a ../../../../../distribution/libavfilter/lib/x86/libavfilter.a ../../../../../distribution/libavformat/lib/x86/libavformat.a ../../../../../distribution/libavutil/lib/x86/libavutil.a ../../../../../distribution/libswresample/lib/x86/libswresample.a -lm "D:/AndroidSDK/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/x86/libgnustl_static.a" && cd ."
    src/libavformat/allformats.c:51: error: undefined reference to 'avcodec_register_all'
     src/libavformat/id3v2.c:1009: error: undefined reference to 'uncompress'
     src/libavformat/id3v2.c:1153: error: undefined reference to 'av_init_packet'
     src/libavformat/matroskadec.c:1393: error: undefined reference to 'inflateInit_'
     src/libavformat/matroskadec.c:1408: error: undefined reference to 'inflate'
     src/libavformat/matroskadec.c:1401: error: undefined reference to 'inflateEnd'
     src/libavformat/matroskadec.c:1411: error: undefined reference to 'inflateEnd'
     src/libavformat/matroskadec.c:3113: error: undefined reference to 'av_new_packet'
     src/libavformat/matroskadec.c:3134: error: undefined reference to 'av_packet_new_side_data'
     src/libavformat/matroskadec.c:2855: error: undefined reference to 'av_new_packet'
     src/libavformat/matroskadec.c:3147: error: undefined reference to 'av_packet_new_side_data'
     src/libavformat/matroskadec.c:3022: error: undefined reference to 'av_new_packet'
     src/libavformat/matroskadec.c:3031: error: undefined reference to 'av_packet_new_side_data'
     src/libavformat/matroskadec.c:3042: error: undefined reference to 'av_packet_new_side_data'
     src/libavformat/matroskadec.c:3151: error: undefined reference to 'av_packet_unref'
     src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
     src/libavformat/matroskadec.c:963: error: undefined reference to 'av_fast_padded_malloc'
     src/libavformat/matroskadec.c:2163: error: undefined reference to 'av_get_codec_tag_string'
     src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
     src/libavformat/matroskadec.c:2579: error: undefined reference to 'av_init_packet'
     src/libavformat/matroskadec.c:2580: error: undefined reference to 'av_new_packet'
     src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
     src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
     src/libavformat/matroskadec.c:1715: error: undefined reference to 'avpriv_mpeg4audio_sample_rates'
     src/libavformat/matroskadec.c:1866: error: undefined reference to 'avcodec_chroma_pos_to_enum'
     src/libavformat/matroskadec.c:2680: error: undefined reference to 'av_packet_unref'
     src/libavformat/matroskaenc.c:2482: error: undefined reference to 'avcodec_get_type'
     src/libavformat/matroskaenc.c:646: error: undefined reference to 'avpriv_split_xiph_headers'
     src/libavformat/matroskaenc.c:1066: error: undefined reference to 'av_get_bits_per_sample'
     src/libavformat/matroskaenc.c:723: error: undefined reference to 'avpriv_mpeg4audio_get_config'
     src/libavformat/matroskaenc.c:875: error: undefined reference to 'avcodec_enum_to_chroma_pos'
     src/libavformat/matroskaenc.c:813: error: undefined reference to 'avcodec_get_name'
     src/libavformat/matroskaenc.c:806: error: undefined reference to 'avcodec_get_name'
     src/libavformat/matroskaenc.c:824: error: undefined reference to 'avcodec_get_name'
     .....
  • Cant link against ffmpeg with openssl using cmake

    24 mars 2017, par David Barishev

    I have build ffmpeg libraries statically for x86 android using a custom configuration.Now i wanted to add them in my android project.

    Im using ffmpeg 3.2.git, android studio 2.3.

    I created a folder named distribution which had my binaries, and the minimum headers i needed for it to not tell me about missing header (Except for the avutil- i just included them all), located the root of my project.
    I edited my cmake to include the libraries :

    add_library(
            native-lib
            SHARED
            src/main/cpp/native-lib.cpp )

    set(distribution_DIR ${CMAKE_SOURCE_DIR}/../distribution)

    add_library(lib_avcodec STATIC IMPORTED)
    set_target_properties(lib_avcodec PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavcodec/lib/${ANDROID_ABI}/libavcodec.a)

    add_library(lib_avfilter STATIC IMPORTED)
    set_target_properties(lib_avfilter PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavfilter/lib/${ANDROID_ABI}/libavfilter.a)

    add_library(lib_avformat STATIC IMPORTED)
    set_target_properties(lib_avformat PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavformat/lib/${ANDROID_ABI}/libavformat.a)

    add_library(lib_avutil STATIC IMPORTED)
    set_target_properties(lib_avutil PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libavutil/lib/${ANDROID_ABI}/libavutil.a)

    add_library(lib_swresample STATIC IMPORTED)
    set_target_properties(lib_swresample PROPERTIES IMPORTED_LOCATION
       ${distribution_DIR}/libswresample/lib/${ANDROID_ABI}/libswresample.a)


    include_directories(
                             ${distribution_DIR}
                             )

    find_library( # Sets the name of the path variable.
             z-lib

             # Specifies the name of the NDK library that
             # you want CMake to locate.
             z )

    target_link_libraries(
                      native-lib

                      ${z-lib}

                      lib_crypto
                      lib_ssl

                      lib_avfilter
                      lib_avformat
                      lib_avcodec
                      lib_swresample

                      lib_avutil

                       )

    I also restricted the build to only x86, in my app build.gradle :

    ndk {
               // Specifies the ABI configurations of your native
               // libraries Gradle should build and package with your APK.
               abiFilters 'x86'
       }

    The project gradle sync worked successfully.
    I wrote the following code in my cpp file :

    #include


    extern "C"{
       #include "libavformat/avformat.h"
    }
    JNIEXPORT void JNICALL
    Java_com_example_david_testffmpegcpp_MainActivity_stringFromJNI(
           JNIEnv *env,
           jobject /* this */) {

       av_register_all ();
       avformat_network_init ();


    }

    Just to check if the library works, but i cant seem to link against the libraries correctly. It complains about undefined symbols.
    What did i do wrong ?

    EDIT :

    I changed the order of the linked libraries, and was able to remove all error for ffmpeg’s library functions not found, and i added zlib,that removed some more.

    The only error left are those how are related to openssl, its logical since i compiled my ffmpeg libraries with openssl.

    I tried linking my openssl static libraries that i used for compiling ffmpeg like this :

    set(ssl_dir ${CMAKE_SOURCE_DIR}/../../../FFmpegBuild/Openssl/output_19/android)

    add_library(lib_ssl STATIC IMPORTED)
    set_target_properties(lib_ssl PROPERTIES IMPORTED_LOCATION
       ${ssl_dir}/openssl-${ANDROID_ABI}/lib/libssl.a)

    add_library(lib_crypto STATIC IMPORTED)
    set_target_properties(lib_crypto PROPERTIES IMPORTED_LOCATION
       ${ssl_dir}/openssl-${ANDROID_ABI}/lib/libcrypto.a)

    include_directories(      ${ssl_dir}/openssl-${ANDROID_ABI}/include
                             ${distribution_DIR}

                             )

    And linked against them :

    target_link_libraries( # Specifies the target library.
                          native-lib

                          ${z-lib}


                          lib_ssl
                          lib_crypto

                          lib_avfilter
                          lib_avformat
                          lib_avcodec
                          lib_swresample

                          lib_avutil

                           )

    But i’m still getting the error that i state below.
    My question is why ? Also if i already built ffmpeg in static mode, how come i need to relink openssl again ?

    Error :

    Error while executing process D:\AndroidSDK\cmake\3.6.3155560\bin\cmake.exe with arguments {--build D:\AndroidApps\TestFFmpegCpp\app\.externalNativeBuild\cmake\debug\x86 --target native-lib}
    [1/1] Linking CXX shared library ..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so
    FAILED: cmd.exe /C "cd . && D:\AndroidSDK\ndk-bundle\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe  --target=i686-none-linux-android --gcc-toolchain=D:/AndroidSDK/ndk-bundle/toolchains/x86-4.9/prebuilt/windows-x86_64 --sysroot=D:/AndroidSDK/ndk-bundle/platforms/android-19/arch-x86 -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security  -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -mstackrealign -Wa,--noexecstack -Wformat -Werror=format-security   -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libnative-lib.so -o ..\..\..\..\build\intermediates\cmake\debug\obj\x86\libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  -lz ../../../../../../../FFmpegBuild/Openssl/output_19/android/openssl-x86/lib/libcrypto.a ../../../../../../../FFmpegBuild/Openssl/output_19/android/openssl-x86/lib/libssl.a ../../../../../distribution/libavfilter/lib/x86/libavfilter.a ../../../../../distribution/libavformat/lib/x86/libavformat.a ../../../../../distribution/libavcodec/lib/x86/libavcodec.a ../../../../../distribution/libswresample/lib/x86/libswresample.a ../../../../../distribution/libavutil/lib/x86/libavutil.a -lm "D:/AndroidSDK/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/x86/libgnustl_static.a" && cd ."
    src/libavformat/tls_openssl.c:125: error: undefined reference to 'BIO_clear_flags'
     src/libavformat/tls_openssl.c:102: error: undefined reference to 'BIO_clear_flags'
     src/libavformat/tls_openssl.c:116: error: undefined reference to 'BIO_clear_flags'
     src/libavformat/tls_openssl.c:116: error: undefined reference to 'BIO_clear_flags'
     src/libavformat/tls_openssl.c:309: error: undefined reference to 'SSL_read'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_get_error'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_error_string'
     src/libavformat/tls_openssl.c:320: error: undefined reference to 'SSL_write'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_get_error'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_error_string'
     src/libavformat/tls_openssl.c:154: error: undefined reference to 'SSL_library_init'
     src/libavformat/tls_openssl.c:155: error: undefined reference to 'SSL_load_error_strings'
     src/libavformat/tls_openssl.c:157: error: undefined reference to 'CRYPTO_get_locking_callback'
     src/libavformat/tls_openssl.c:159: error: undefined reference to 'CRYPTO_num_locks'
     src/libavformat/tls_openssl.c:165: error: undefined reference to 'CRYPTO_num_locks'
     src/libavformat/tls_openssl.c:167: error: undefined reference to 'CRYPTO_set_locking_callback'
     src/libavformat/tls_openssl.c:186: error: undefined reference to 'CRYPTO_get_locking_callback'
     src/libavformat/tls_openssl.c:188: error: undefined reference to 'CRYPTO_set_locking_callback'
     src/libavformat/tls_openssl.c:189: error: undefined reference to 'CRYPTO_num_locks'
     src/libavformat/tls_openssl.c:208: error: undefined reference to 'SSL_shutdown'
     src/libavformat/tls_openssl.c:209: error: undefined reference to 'SSL_free'
     src/libavformat/tls_openssl.c:212: error: undefined reference to 'SSL_CTX_free'
     src/libavformat/tls_openssl.c:240: error: undefined reference to 'SSLv23_client_method'
     src/libavformat/tls_openssl.c:240: error: undefined reference to 'SSL_CTX_new'
     src/libavformat/tls_openssl.c:246: error: undefined reference to 'SSL_CTX_ctrl'
     src/libavformat/tls_openssl.c:248: error: undefined reference to 'SSL_CTX_load_verify_locations'
     src/libavformat/tls_openssl.c:251: error: undefined reference to 'SSL_CTX_use_certificate_chain_file'
     src/libavformat/tls_openssl.c:257: error: undefined reference to 'SSL_CTX_use_PrivateKey_file'
     src/libavformat/tls_openssl.c:267: error: undefined reference to 'SSL_new'
     src/libavformat/tls_openssl.c:284: error: undefined reference to 'BIO_new'
     src/libavformat/tls_openssl.c:287: error: undefined reference to 'SSL_set_bio'
     src/libavformat/tls_openssl.c:290: error: undefined reference to 'SSL_accept'
     src/libavformat/tls_openssl.c:240: error: undefined reference to 'SSLv23_server_method'
     src/libavformat/tls_openssl.c:258: error: undefined reference to 'ERR_get_error'
     src/libavformat/tls_openssl.c:258: error: undefined reference to 'ERR_error_string'
     src/libavformat/tls_openssl.c:208: error: undefined reference to 'SSL_shutdown'
     src/libavformat/tls_openssl.c:209: error: undefined reference to 'SSL_free'
     src/libavformat/tls_openssl.c:212: error: undefined reference to 'SSL_CTX_free'
     src/libavformat/tls_openssl.c:290: error: undefined reference to 'SSL_connect'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_get_error'
     src/libavformat/tls_openssl.c:200: error: undefined reference to 'ERR_error_string'
     src/libavformat/tls_openssl.c:266: error: undefined reference to 'SSL_CTX_set_verify'
     src/libavformat/tls_openssl.c:289: error: undefined reference to 'SSL_ctrl'
     clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
     ninja: build stopped: subcommand failed.