Recherche avancée

Sur d’autres sites (9622)

• Android processing a video to CMYK

  28 juillet 2014, par bigben619

  I am working on a project and in that project I need to be able to :

  1. get a frame of a video
  2. change it to a CMYK
  3. try to render that frame

  Do you guys have any suggestions ?

  To get the frames I think I can use ffmpeg.
  I think the person that wrote
  Android processing a video, YCrCb frames to video
  can help me but I’m open to any suggestions.

  I appreciate all the help I can get, thank you

• How can i handle Android device's framebuffer ?

  4 février 2013, par Chiung Choi

  I want handle Android's frame buffer. I have a rooted Galaxy R(SHV-E170K) for testing, on which I run this command :

  adb pull /dev/graphics/fb0 fb0

  Then, I run the ffmpeg command :

  ffmpeg -vcodec rawvideo -f rawvideo -pix_fmt rgb0 -s 540x960 -i fb0 -f image2 -vcodec png frame-%d.png

  But I get below wrong images.

  

  How can I correctly handle android's framebuffer ?

  Thanks.

• Include Shared library .so in android studio

  15 avril 2016, par Spartan

  I extracted ffmpeg in ndk’s source folder then compiled it there only for that I followed this :http://www.roman10.net/2013/08/18/how-to-build-ffmpeg-with-ndk-r9/ and successfully generated android folder with arm/lib and arm/include files.

  After that I created one Android.mk file in $NDK/sources/ffmpeg/android/arm and one Android.mk in my android project(src/main/jni folder).

  My src/main/jni/Android.mk is like this :

  LOCAL_PATH := $(call my-dir)
  
  
  
  include $(CLEAR_VARS)
  
  
  
  LOCAL_MODULE    := tutorial01
  
  LOCAL_SRC_FILES := tutorial01.c
  
  LOCAL_LDLIBS := -llog -ljnigraphics -lz
  
  LOCAL_SHARED_LIBRARIES := libavcodec
  
  
  
  include $(BUILD_SHARED_LIBRARY)
  
  $(call import-module,ffmpeg-3.0.1/android/arm)

  and $NDK/sources/ffmpeg/android/arm/Android.mk is :

  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)

  I updated my build.gradle like this and successfully generated jniLibs with .so files but I am getting libavcodec/avcodec.h : No such file or directory while building project.

  import org.apache.tools.ant.taskdefs.condition.Os
  
  
  
  apply plugin: 'com.android.model.application'
  
  
  
  model {
  
      android {
  
          compileSdkVersion = 23
  
          buildToolsVersion = "23.0.2"
  
  
  
          defaultConfig.with {
  
              applicationId = "com.example.spartan.hello"
  
              minSdkVersion.apiLevel = 18
  
              targetSdkVersion.apiLevel = 23
  
              versionCode = 1
  
              versionName = "1.0"
  
          }
  
      }
  
      android.buildTypes {
  
          release {
  
              minifyEnabled = false
  
              proguardFiles.add(file('proguard-android.txt'))
  
          }
  
      }
  
  
  
      android.sources {
  
          main {
  
              jni {
  
                  source {
  
                      srcDirs = []
  
                  }
  
  
  
              }
  
  
  
          }
  
  
  
          main {
  
              jniLibs {
  
                  source {
  
                      srcDirs = ['src/main/libs']
  
                  }
  
              }
  
          }
  
  
  
      }
  
  
  
      android.ndk {
  
          moduleName = "tutorial01"
  
          stl = 'gnustl_shared'
  
      }
  
  }
  
  
  
  
  
  task ndkBuild(type: Exec) {
  
      if (Os.isFamily(Os.FAMILY_WINDOWS)) {
  
          commandLine 'ndk-build.cmd', '-C', file('src/main').absolutePath
  
      } else {
  
          commandLine 'ndk-build', '-C', file('src/main').absolutePath
  
      }
  
  }
  
  tasks.withType(JavaCompile) {
  
      compileTask -> compileTask.dependsOn ndkBuild
  
  }
  
  
  
  dependencies {
  
      compile fileTree(include: ['*.jar'], dir: 'libs')
  
      testCompile 'junit:junit:4.12'
  
      compile 'com.android.support:appcompat-v7:23.2.1'
  
  }

  and loading them in my activity like this :

  static {
  
          System.loadLibrary("tutorial01");     
  
          System.loadLibrary("avcodec-57");   
  
      }

  I am new to NDK so, Is it ok if we manually paste header files in jni folder ?