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An open source shooting and short video processing tool

An open source shooting and short video processing tool

trinity

trinity is an open source shooting and short video processing tool, written in kotlin and c++, which implements most of the popular features of short video editing software.

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git commit specification

Code Specification

System version

Support Android 4.3 And above

Development environment

  • Android Studio 3.5
  • NDK r20
  • kotlin 1.3.41

Open source library used

  • fdk-aac
  • ffmpeg 3.4
  • libx264
  • xlogger
  • mnnkit

Features

Video shooting
Function Description Whether to support
Multi-session recording
Custom duration
Custom camera configuration
Camera switch
flash
Focus adjustment
Manual focus
Mute
Beauty x
Microdermabrasion
Custom resolution and bit rate
Record background sound
Recording speed
Hard and soft coding
Video editing
Multi-segment editing
Replace fragment
Set clip time
Background music
Hard decode
Special effects
Filter
Flash white
Two split screen
Three-point screen
Quarter screen
Six split screen
Nine points screen
Blur split screen
Gaussian blur
Soul out
shake
glitch
70s
Face recognition
Rose eye markup
Princess
Sticker makeup
Falling pig
Cat head

Face effect

roseEye

Special effects debugging

Use xcode to debug special effects in the project, you need to install glfw before use

brew install glfw

Then use xcode to openlibrary/src/main/cpp/opengl.xcodeprojJust
Switch effect call code

image_process.OnAction("param/blurScreen", 0);

Automated test

cd trinity
python trinity.py

Then use

adb devices

Just enter the device name in the terminal

Performance

memory

Use

Note: The permission judgment is not made in the SDK. The caller needs to apply for permission when using it. The time involved in the SDK is milliseconds.

Add jcenter dependency

dependencies {
    implementation 'com.github.wlanjie:trinity:0.2.7'
}

Permission requirements

<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Recording

Configuration parameter

  • Create a recording preview view
val preview = findViewById<TrinityPreviewView>(R.id.preview)
  • Create a recording interface instance
mRecord = TrinityRecord(preview)
  • Destroy the recording interface instance
mRecord.release()

Callback settings

  • Set video rendering callback
mRecord.setOnRenderListener(this)
  • Set recording progress callback
mRecord.setOnRecordingListener(this)
  • Set camera callback
mRecord.setCameraCallback(this)

Open preview

  • Start preview
mRecord.startPreview()
  • End preview
mRecord.stopPreview()
  • Set preview type
// Set the display type
// Include crop display, the original proportion is displayed in black
mRecord.setFrame(mFrame)

Recording control / management

  • Switch camera
mRecord.switchCamera()
  • Get the current camera
// return the current camera id
val facing = mRecord.getCameraFacing()
  • Switch flash
mRecord.flash(mFlash)
  • Setting up zoom
// Set the focal length zoom, 0-100 100 is the maximum zoom
mRecord.setZoom(0)
  • Set exposure
// Set the camera exposure, 100 is the maximum exposure
mRecord.setExposureCompensation(0)
  • Manual focus
// Set manual focus, parameters are x and y
mRecord.focus(mPointF)
  • Set the angle of the recorded video
/**
 * @param rotation Rotation angle includes 0 90 180 270
 */
mRecord.setRecordRotation(0)
  • Set up silent recording
mRecord.setMute(false)
  • Double speed recording
/**
 * @param speed contains 0.25 0.5 1.0 2.0 4.0 times the speed
 */
mRecord.setSpeed(mSpeed)

Start recording

  • Start recording a video
/**
 * Start recording a video
 * @param path Recorded video save address
 * @param width The width of the recorded video. The SDK will do a 16-times integer operation. The width of the final output video may be inconsistent with the setting.
 * @param height The height of the recorded video. The SDK will do a 16-times integer operation. The width of the final output video may be inconsistent with the setting.
 * @param videoBitRate The bit rate of the video output. If it is set to 2000, it is 2M. The final output and the set may be different.
 * @param frameRate frame rate of video output
 * @param useHardWareEncode whether to use hard coding, if set to true, and hard coding is not supported, it will automatically switch to soft coding
 * @param audioSampleRate audio sample rate
 * @param audioChannel number of audio channels
 * @param audioBitRate audio bit rate
 * @param duration
 * @return Int ErrorCode.SUCCESS is success, others are failures
 * @throws InitRecorderFailException
 */
mRecord.startRecording("/sdcard/a.mp4",
                      720,
                      1280,
                      2000, // 2M bit rate
                      30,
                      false,
                      44100,
                      1, // Mono
                      128, // 128K Rate
                      Int.MAX_VALUE)
  • End recording
mRecord.stopRecording()

Video editing

Initialization

  • Create editor instance
mVideoEditor = TrinityCore.createEditor(this)
  • Set preview screen
val surfaceView = findViewById<SurfaceView>(R.id.surface_view)
mVideoEditor.setSurfaceView(surfaceView)

Import video

  • Add a snippet
val clip = MediaClip(file.absolutePath)
mVideoEditor.insertClip(clip)
  • Add fragments based on subscripts
val clip = MediaClip(file.absolutePath)
mVideoEditor.insertClip(0, clip)
  • Delete a clip
/**
 * Delete a segment in accordance with the subscript
 */
mVideoEditor.removeClip(index)
  • Get the number of fragments
val count = mVideoEditor.getClipsCount()
  • Get a clip based on the subscript
 /**
  * If the fragment does not exist, returns a null
  */
val clip = mVideoEditor.getClip(index)
  • Replace a snippet based on a subscript
mVideoEditor.replaceClip(index, clip)
  • Get all clips
 /**
  * Returns a collection of all clips
  */
val clips = mVideoEditor.getVideoClips()
  • Total time to get all clips
val duration = mVideoEditor.getVideoDuration()
  • Get the progress of the currently playing clip
val current = mVideoEditor.getCurrentPosition()
  • Get start and end time of specified clip
val timeRange = mVideoEditor.getClipTimeRange(index)
  • Find subscripts of clips based on time
val index = mVideoEditor.getClipIndex(time)

Background music

  • Add background music
 /**
  * @param config background music json content
  * The specific json content is as follows:
  * {
  *   "path": "/sdcard/trinity.mp3",
  *   "startTime": 0,
  *   "endTime": 2000
  * }
  * json parameter explanation:
  * path: the local address of the music
  * startTime: the start time of this music
  * endTime: the end time of this music 2000 means this music only plays for 2 seconds
  */
val actionId = mVideoEditor.addMusic(config)
  • Updated background music
 /**
  * @param config background music json content
  * The specific json content is as follows:
  * {
  *   "path": "/sdcard/trinity.mp3",
  *   "startTime": 2000,
  *   "endTime": 4000
  *}
  * json parameter explanation:
  * path: the local address of the music
  * startTime: the start time of this music
  * endTime: the end time of this music 4000 means this music is played for 2 seconds from the start time to the end time
  */
val actionId = mVideoEditor.addMusic(config)
  • Remove background music
 /**
  * Remove background music
  * @param actionId must be the actionId returned when adding background music
  */
mVideoEditor.deleteMusic(actionId)

Add special effects

  • Add ordinary filters
/**
 * Add filters
 * For example: the absolute path of content.json is /sdcard/Android/com.trinity.sample/cache/filters/config.json
 * The path only needs /sdcard/Android/com.trinity.sample/cache/filters
 * If the current path does not contain config.json, the addition fails
 * The specific json content is as follows:
 * {
 *   "type": 0,
 *   "intensity": 1.0,
 *   "lut": "lut_124 / lut_124.png"
 * }
 *
 * json parameter explanation:
 * type: reserved field, currently has no effect
 * intensity: filter transparency, no difference between 0.0 and camera acquisition
 * lut: the address of the filter color table, must be a local address, and it is a relative path
 * Path splicing will be performed inside sdk
 * @param configPath filter parent directory of config.json
 * @return returns the unique id of the current filter
*/
val actionId = mVideoEditor.addFilter(config)
  • Update filters
/**
 * Update filters
 * @param configPath config.json path, currently addFilter description
 * @param startTime filter start time
 * @param endTime filter end time
 * @param actionId Which filter needs to be updated, must be the actionId returned by addFilter
 */
mVideoEditor.updateFilter(config, 0, 2000, actionId)
  • Delete filter
  /**
   * Delete filter
   * @param actionId Which filter needs to be deleted, it must be the actionId returned when addFilter
   */
mVideoEditor.deleteFilter (actionId)
  • Add vibrato effect
/**
 * Add special effects
 * For example: the absolute path of content.json is /sdcard/Android/com.trinity.sample/cache/effects/config.json
 * The path only needs /sdcard/Android/com.trinity.sample/cache/effects
 * If the current path does not contain config.json, the addition fails
 * @param configPath filter parent directory of config.json
 * @return returns the unique id of the current effect
 */
val actionId = mVideoEditor.addAction(configPath)
  • Updated vibrato effect
/**
 * Update specific effects
 * @param startTime The start time of the effect
 * @param endTime End time of the effect
 * @param actionId Which effect needs to be updated, must be the actionId returned by addAction
 */
mVideoEditor.updateAction(0, 2000, actionId)
  • Remove vibrato effect
/**
 * Delete a special effect
 * @param actionId Which effect needs to be deleted, must be the actionId returned by addAction
 */
mVideoEditor.deleteAction(actionId)

Start preview

  • Play
/**
 * @param repeat whether to repeat playback
 */
mVideoEditor.play(repeat)
  • time out
mVideoEditor.pause()
  • Resume playback
mVideoEditor.resume()
  • Stop play
mVideoEditor.stop()

Release resources

mVideoEditor.destroy()

Export video

  • Create export instance
val export = TrinityCore.createExport(this)
  • Start export
/**
  * Start export
  * @param info export object
  * @param l export callback, success failed and progress
  * @return Int ErrorCode.SUCCESS is sucess, other failed
  */
// Create export object, must be insert video out path 
val exportVideoInfo = VideoExportInfo("/sdcard/export.mp4")
// use hardware decode
exportVideoInfo.mediaCodecDecode = true
// use hardware encode
exportVideoInfo.mediaCodecEncode = true  
// video width
exportVideoInfo.width = 544
// video height
exportVideoInfo.height = 960
// frame rate
exportVideoInfo.frameRate = 25
// video bitrate 2M
exportVideoInfo.videoBitRate = 2000
// sample rate
exportVideoInfo.sampleRate = 44100
// channel
exportVideoInfo.channelCount = 1
// audio bitrate 128K
exportVideoInfo.audioBitRate = 128
export.export(exportVideoInfo, this)
  • Cancel
export.cancel()
  • Freed
export.release()

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