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• WebM on the web

  23 mai 2010, par Basil Gohar — Software, Updates, flumotion, gstreamer, mpeg-la, ogg, vp8, webm, xiph

  News & developments about WebM are coming too fast to cover all of them, but it’s definitely encouraging to see that the free software world (as well as some other surprising, but welcome, players) has unequivocally embraced WebM as the … Read more (...)

• Google Chrome dropping support for H.264, will support only open web codecs in the future

  11 janvier 2011, par Basil Gohar — Announcements, chrome, encumbrance, freedom, google, html5, mpeg-la, software patents, theora, vp8, webm

  In an understated announcement on the Chromium blog, going forward, Google Chrome will drop support for the encumbered H.264 video codec and will support only VP8 (through WebM) & Theora video natively. This is great news for the open web, … Read more (...)

• error : undefined reference to 'av_free_packet(AVPacket*)' when use NDK to compile ffmpeg

  23 juin 2015, par wolfz

  I compiled my cpps to use ffmpeg liberary with ANDROID NDK by my android MK as follow :

      LOCAL_PATH := $(call my-dir)
  
      DEFINES += -DTARGET_POSIX \
  
                 -DTARGET_LINUX \
  
             -D_LINUX \
  
             -DTARGET_ANDROID \
  
             -D__STDC_CONSTANT_MACROS 
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libavcodec
  
      LOCAL_SRC_FILES := lib/lib/libavcodec.so 
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libavfilter  
  
      LOCAL_SRC_FILES := lib/lib/libavfilter.so 
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libavformat  
  
      LOCAL_SRC_FILES := lib/lib/libavformat.so  
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libavutil  
  
      LOCAL_SRC_FILES := lib/lib/libavutil.so  
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libpostproc  
  
      LOCAL_SRC_FILES := lib/lib/libpostproc.so   
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libswresample  
  
      LOCAL_SRC_FILES := lib/lib/libswresample.so   
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)  
  
      LOCAL_MODULE := libswscale  
  
      LOCAL_SRC_FILES := lib/lib/libswscale.so
  
      include $(PREBUILT_SHARED_LIBRARY)  
  
  
  
      include $(CLEAR_VARS)
  
      LOCAL_MODULE:= player
  
      base := $(LOCAL_PATH)
  
      LOCAL_SRC_FILES += cores/PlayDemux.cpp \
  
                     cores/PlayDemuxFFmpeg.cpp \
  
                     cores/PlayFactoryDemuxer.cpp
  
  
  
      LOCAL_C_INCLUDES += $(LOCAL_PATH) \
  
              $(LOCAL_PATH)/lib \
  
              $(LOCAL_PATH)/lib/include \
  
              $(LOCAL_PATH)/cores/player \
  
      LOCAL_CPPFLAGS += -Wall -fexceptions $(DEFINES)
  
      include $(BUILD_STATIC_LIBRARY)
  
  
  
      include $(CLEAR_VARS)
  
      LOCAL_MODULE:= testmain
  
  
  
      LOCAL_SRC_FILES := \
  
          testmain.cpp \
  
  
  
      LOCAL_C_INCLUDES += $(LOCAL_PATH) \
  
                  $(LOCAL_PATH)/lib 
  
      LOCAL_CPPFLAGS += -Wall -fexceptions $(DEFINES)
  
  
  
      LOCAL_SHARED_LIBRARIES := libavcodec \
  
                  libavformat \
  
                  libavfilter \
  
                  libavutil \
  
                  libpostproc \
  
                  libswscale \
  
                  libswresample 
  
  
  
      LOCAL_STATIC_LIBRARIES := player 
  
  
  
      include $(BUILD_EXECUTABLE)

  but when i do "ndk-build v=1", After compiling, I got :

      Install        : libavcodec.so => libs/armeabi-v7a/libavcodec.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libavcodec.so /cygdrive/d/player/libs/armeabi-v7a/libavcodec.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libavcodec.so
  
      Install        : libavfilter.so => libs/armeabi-v7a/libavfilter.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libavfilter.so /cygdrive/d/player/libs/armeabi-v7a/libavfilter.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libavfilter.so
  
      Install        : libavformat.so => libs/armeabi-v7a/libavformat.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libavformat.so /cygdrive/d/player/libs/armeabi-v7a/libavformat.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libavformat.so
  
      Install        : libavutil.so => libs/armeabi-v7a/libavutil.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libavutil.so /cygdrive/d/player/libs/armeabi-v7a/libavutil.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libavutil.so
  
      Install        : libpostproc.so => libs/armeabi-v7a/libpostproc.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libpostproc.so /cygdrive/d/player/libs/armeabi-v7a/libpostproc.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libpostproc.so
  
      Install        : libswresample.so => libs/armeabi-v7a/libswresample.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libswresample.so /cygdrive/d/player/libs/armeabi-v7a/libswresample.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libswresample.so
  
      Install        : libswscale.so => libs/armeabi-v7a/libswscale.so
  
      install -p /cygdrive/d/player/obj/local/armeabi-v7a/libswscale.so /cygdrive/d/player/libs/armeabi-v7a/libswscale.so
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-strip --strip-unneeded D:/player/libs/armeabi-v7a/libswscale.so
  
      Executable     : testmain
  
      /cygdrive/d/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-g++  -Wl,--gc-sections  -Wl,-z,nocopyreloc  --sysroot=D:/android/android-ndk-r8e/platforms/android-14/arch-arm  D:/player/obj/local/armeabi-v7a/objs/testmain/testmain.o D:/player/obj/local/armeabi-v7a/libplayer.a D:/android/android-ndk-r8e/sources/cxx-stl/stlport/libs/armeabi-v7a/libstlport_static.a -lgcc D:/player/obj/local/armeabi-v7a/libavcodec.so D:/player/obj/local/armeabi-v7a/libavformat.so D:/player/obj/local/armeabi-v7a/libavfilter.so D:/player/obj/local/armeabi-v7a/libavutil.so D:/player/obj/local/armeabi-v7a/libpostproc.so D:/player/obj/local/armeabi-v7a/libswscale.so D:/player/obj/local/armeabi-v7a/libswresample.so  -no-canonical-prefixes -march=armv7-a  -Wl,--fix-cortex-a8  -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now    -lc -lm  -o D:/player/obj/local/armeabi-v7a/testmain
  
      D:/android/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld.exe: D:/player/obj/local/armeabi-v7a/libplayer.a(PlayDemuxFFmpeg.o): in function PlayDemuxFFmpeg::Flush():D:/player/jni/lib/DllAvCodec.h:144: error: undefined reference to 'av_free_packet(AVPacket*)'

  I´m using windows 7 + cygwin + NDKR8,but the lib "libavcodec.so ,libavfilter.so,libavformat.so,libavutil.so,libpostproc.so,libswresample.so,libswscale.so " of ffmpeg was compiled with standalone mothed of NDK using "ubuntu + NDK8".
  and i include the extern "c" code in the head file.

  so, how to correct the error ?

  my DLLavcodec.h is :

  #pragma once
  
  #include "DllAvUtil.h"
  
  
  
  extern "C" {
  
    #include <libavcodec></libavcodec>avcodec.h>
  
  }
  
  
  
  
  
  class DllAvCodec : public DllAvCodecInterface
  
  {
  
  public:
  
    static CCriticalSection m_critSection;
  
  
  
    virtual ~DllAvCodec() {}
  
    virtual void avcodec_register_all()
  
    {
  
      ::avcodec_register_all();
  
    }
  
    virtual void avcodec_flush_buffers(AVCodecContext *avctx) { ::avcodec_flush_buffers(avctx); }
  
    virtual int avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
  
    {
  
      return ::avcodec_open2(avctx, codec, options);
  
    }
  
    virtual int avcodec_open2_dont_call(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options) { *(volatile int *)0x0 = 0; return 0; }
  
    virtual int avcodec_close_dont_call(AVCodecContext *avctx) { *(volatile int *)0x0 = 0; return 0; }
  
    virtual AVCodec *avcodec_find_decoder(enum CodecID id) { return ::avcodec_find_decoder(id); }
  
    virtual AVCodec *avcodec_find_encoder(enum CodecID id) { return ::avcodec_find_encoder(id); }
  
    virtual int avcodec_close(AVCodecContext *avctx)
  
    {
  
      return ::avcodec_close(avctx);
  
    }
  
    virtual AVFrame *avcodec_alloc_frame() { return ::avcodec_alloc_frame(); }
  
    virtual int avpicture_fill(AVPicture *picture, uint8_t *ptr, PixelFormat pix_fmt, int width, int height) { return ::avpicture_fill(picture, ptr, pix_fmt, width, height); }
  
    virtual int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt) { return ::avcodec_decode_video2(avctx, picture, got_picture_ptr, avpkt); }
  
    virtual int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt) { return ::avcodec_decode_audio4(avctx, frame, got_frame_ptr, avpkt); }
  
    virtual int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt) { return ::avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, avpkt); }
  
    virtual int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples) { return ::avcodec_encode_audio(avctx, buf, buf_size, samples); }
  
    virtual int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) { return ::avcodec_encode_audio2(avctx, avpkt, frame, got_packet_ptr); }
  
    virtual int avpicture_get_size(PixelFormat pix_fmt, int width, int height) { return ::avpicture_get_size(pix_fmt, width, height); }
  
    virtual AVCodecContext *avcodec_alloc_context3(AVCodec *codec) { return ::avcodec_alloc_context3(codec); }
  
    virtual void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) { ::avcodec_string(buf, buf_size, enc, encode); }
  
    virtual void avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec) { ::avcodec_get_context_defaults3(s, codec); }
  
  
  
    virtual AVCodecParserContext *av_parser_init(int codec_id) { return ::av_parser_init(codec_id); }
  
    virtual int av_parser_parse2(AVCodecParserContext *s,AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size,
  
                      const uint8_t *buf, int buf_size,
  
                      int64_t pts, int64_t dts, int64_t pos)
  
    {
  
      return ::av_parser_parse2(s, avctx, poutbuf, poutbuf_size, buf, buf_size, pts, dts, pos);
  
    }
  
    virtual void av_parser_close(AVCodecParserContext *s) { ::av_parser_close(s); }
  
  
  
    virtual AVBitStreamFilterContext *av_bitstream_filter_init(const char *name) { return ::av_bitstream_filter_init(name); }
  
    virtual int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
  
      AVCodecContext *avctx, const char *args,
  
      uint8_t **poutbuf, int *poutbuf_size,
  
      const uint8_t *buf, int buf_size, int keyframe) { return ::av_bitstream_filter_filter(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe); }
  
    virtual void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc) { ::av_bitstream_filter_close(bsfc); }
  
  
  
    virtual void avpicture_free(AVPicture *picture) { ::avpicture_free(picture); }
  
    virtual void av_free_packet(AVPacket *pkt) { ::av_free_packet(pkt); }
  
    virtual int avpicture_alloc(AVPicture *picture, PixelFormat pix_fmt, int width, int height) { return ::avpicture_alloc(picture, pix_fmt, width, height); }
  
    virtual int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic) { return ::avcodec_default_get_buffer(s, pic); }
  
    virtual void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic) { ::avcodec_default_release_buffer(s, pic); }
  
    virtual enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt) { return ::avcodec_default_get_format(s, fmt); }
  
    virtual AVCodec *av_codec_next(AVCodec *c) { return ::av_codec_next(c); }
  
  
  
    virtual int av_dup_packet(AVPacket *pkt) { return ::av_dup_packet(pkt); }
  
    virtual void av_init_packet(AVPacket *pkt) { return ::av_init_packet(pkt); }
  
    virtual int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align) { return ::avcodec_fill_audio_frame(frame, nb_channels, sample_fmt, buf, buf_size, align); }
  
    virtual void avcodec_free_frame(AVFrame **frame) { return ::avcodec_free_frame(frame); };
  
  };