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feat: Implement audio strip functionality

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Myzel394 2023-08-06 00:06:28 +02:00
parent 07494cba98
commit 491a0740f1
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1 changed files with 35 additions and 2 deletions
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37
app/src/main/java/app/myzel394/locationtest/services/RecorderService.kt
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@ -18,6 +18,7 @@ import androidx.core.content.ContextCompat
import app.myzel394.locationtest.R
import app.myzel394.locationtest.dataStore
import app.myzel394.locationtest.db.AudioRecorderSettings
import app.myzel394.locationtest.ui.utils.formatDuration
import com.arthenica.ffmpegkit.FFmpegKit
import com.arthenica.ffmpegkit.ReturnCode
import kotlinx.coroutines.CoroutineScope
@ -109,9 +110,34 @@ class RecorderService: Service() {
}
}
private fun stripConcatenatedFileToExactDuration(
outputFile: File
) {
// Move the concatenated file to a temporary file
val rawFile = File("$fileFolder/${outputFile.nameWithoutExtension}-raw.${settings.fileExtension}")
outputFile.renameTo(rawFile)
val command = "-sseof ${settings.maxDuration / -1000} -i $rawFile -y $outputFile"
val session = FFmpegKit.execute(command)
if (!ReturnCode.isSuccess(session.returnCode)) {
Log.d(
"Audio Concatenation",
String.format(
"Command failed with state %s and rc %s.%s",
session.getState(),
session.getReturnCode(),
session.getFailStackTrace()
)
)
throw Exception("Failed to strip concatenated audio")
}
}
fun concatenateFiles(forceConcatenation: Boolean = false): File {
val paths = filePaths.joinToString("|")
println("Concatenating files: $paths")
val fileName = recordingStart!!
.format(ISO_DATE_TIME)
.toString()
@ -123,7 +149,7 @@ class RecorderService: Service() {
return outputFile
}
val command = "-i 'concat:$paths'" +
val command = "-i 'concat:$paths' -y" +
" -acodec copy" +
" -metadata title='$fileName' " +
" -metadata date='${recordingStart!!.format(ISO_DATE_TIME)}'" +
@ -148,6 +174,11 @@ class RecorderService: Service() {
throw Exception("Failed to concatenate audios")
}
val minRequiredForPossibleInExactMaxDuration = settings.maxDuration / settings.intervalDuration
if (settings.forceExactMaxDuration && filePaths.size > minRequiredForPossibleInExactMaxDuration) {
stripConcatenatedFileToExactDuration(outputFile)
}
return outputFile
}
@ -332,6 +363,7 @@ class RecorderService: Service() {
data class Settings(
val maxDuration: Long,
val intervalDuration: Long,
val forceExactMaxDuration: Boolean,
val bitRate: Int,
val samplingRate: Int,
val outputFormat: Int,
@ -359,6 +391,7 @@ data class Settings(
outputFormat = audioRecorderSettings.getOutputFormat(),
encoder = audioRecorderSettings.getEncoder(),
maxDuration = audioRecorderSettings.maxDuration,
forceExactMaxDuration = audioRecorderSettings.forceExactMaxDuration,
)
}
}