[WIP] lib: move GgufMetadata into the lib submodule

examples/llama.android/app/src/main/java/com/example/llama/data/local/converter/GgufMetadataConverters.kt

@@ -1,7 +1,7 @@
 package com.example.llama.data.local.converter
 
 import androidx.room.TypeConverter
-import com.example.llama.util.GgufMetadata
+import com.example.llama.data.model.GgufMetadata
 import kotlinx.serialization.json.Json
 
 class GgufMetadataConverters {

examples/llama.android/app/src/main/java/com/example/llama/data/local/entity/ModelEntity.kt

@@ -5,7 +5,7 @@ import androidx.room.PrimaryKey
 import androidx.room.TypeConverters
 import com.example.llama.data.local.converter.GgufMetadataConverters
 import com.example.llama.data.model.ModelInfo
-import com.example.llama.util.GgufMetadata
+import com.example.llama.data.model.GgufMetadata
 
 
 @Entity(tableName = "models")

examples/llama.android/app/src/main/java/com/example/llama/data/model/GgufMetadata.kt

@@ -0,0 +1,309 @@
+package com.example.llama.data.model
+
+import kotlinx.serialization.Serializable
+import android.llama.cpp.gguf.GgufMetadata as Domain
+
+
+/**
+ * A local serializable domain replicate of [android.llama.cpp.gguf.GgufMetadata]
+ */
+@Serializable
+data class GgufMetadata(
+    // Basic file info
+    val version: GgufVersion,
+    val tensorCount: Long,
+    val kvCount: Long,
+
+    // General info
+    val basic: BasicInfo,
+    val author: AuthorInfo? = null,
+    val additional: AdditionalInfo? = null,
+    val architecture: ArchitectureInfo? = null,
+    val baseModels: List<BaseModelInfo>? = null,
+    val tokenizer: TokenizerInfo? = null,
+
+    // Derivative info
+    val dimensions: DimensionsInfo? = null,
+    val attention: AttentionInfo? = null,
+    val rope: RopeInfo? = null,
+    val experts: ExpertsInfo? = null
+) {
+    /** Human-readable full model name + size */
+    val fullModelName: String?
+        get() = when {
+            basic.nameLabel != null -> basic.nameLabel
+            basic.name != null && basic.sizeLabel != null -> "${basic.name}-${basic.sizeLabel}"
+            basic.name != null -> basic.name
+            else -> null
+        }
+
+    /** Human‑readable model name (spaces). */
+    val primaryName: String?
+        get() = basic.nameLabel
+            ?: baseModels?.firstNotNullOfOrNull { it.name }
+            ?: basic.name
+
+    /** CLI‑friendly slug (hyphens). */
+    val primaryBasename: String?
+        get() = basic.name
+            ?: baseModels?.firstNotNullOfOrNull { it.name?.replace(' ', '-') }
+
+    /** URL pointing to model homepage/repo. */
+    val primaryUrl: String?
+        get() = author?.url
+            ?: baseModels?.firstNotNullOfOrNull { it.url }
+
+    val primaryRepoUrl: String?
+        get() = author?.repoUrl
+            ?: baseModels?.firstNotNullOfOrNull { it.repoUrl }
+
+    /** Organisation string. */
+    val primaryOrganization: String?
+        get() = author?.organization
+            ?: baseModels?.firstNotNullOfOrNull { it.organization }
+
+    /** Author string. */
+    val primaryAuthor: String?
+        get() = author?.author
+            ?: baseModels?.firstNotNullOfOrNull { it.author }
+
+    @Serializable
+    enum class GgufVersion(val code: Int, val label: String) {
+        /** First public draft; little‑endian only, no alignment key. */
+        LEGACY_V1(1, "Legacy v1"),
+
+        /** Added split‑file support and some extra metadata keys. */
+        EXTENDED_V2(2, "Extended v2"),
+
+        /** Current spec: endian‑aware, mandatory alignment, fully validated. */
+        VALIDATED_V3(3, "Validated v3");
+
+        companion object {
+            fun fromDomain(domain: Domain.GgufVersion): GgufVersion = when (domain) {
+                Domain.GgufVersion.LEGACY_V1 -> LEGACY_V1
+                Domain.GgufVersion.EXTENDED_V2 -> EXTENDED_V2
+                Domain.GgufVersion.VALIDATED_V3 -> VALIDATED_V3
+            }
+        }
+
+        override fun toString(): String = "$label (code=$code)"
+    }
+
+    @Serializable
+    data class BasicInfo(
+        val uuid: String? = null,
+        val name: String? = null,
+        val nameLabel: String? = null,
+        val sizeLabel: String? = null,  // Size label like "7B"
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.BasicInfo) = BasicInfo(
+                uuid = domain.uuid,
+                name = domain.name,
+                nameLabel = domain.nameLabel,
+                sizeLabel = domain.sizeLabel
+            )
+        }
+    }
+
+    @Serializable
+    data class AuthorInfo(
+        val organization: String? = null,
+        val author: String? = null,
+        val doi: String? = null,
+        val url: String? = null,
+        val repoUrl: String? = null,
+        val license: String? = null,
+        val licenseLink: String? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.AuthorInfo) = AuthorInfo(
+                organization = domain.organization,
+                author = domain.author,
+                doi = domain.doi,
+                url = domain.url,
+                repoUrl = domain.repoUrl,
+                license = domain.license,
+                licenseLink = domain.licenseLink
+            )
+        }
+    }
+
+    @Serializable
+    data class AdditionalInfo(
+        val type: String? = null,
+        val description: String? = null,
+        val tags: List<String>? = null,
+        val languages: List<String>? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.AdditionalInfo) = AdditionalInfo(
+                type = domain.type,
+                description = domain.description,
+                tags = domain.tags,
+                languages = domain.languages
+            )
+        }
+    }
+
+    @Serializable
+    data class ArchitectureInfo(
+        val architecture: String? = null,
+        val fileType: Int? = null,
+        val vocabSize: Int? = null,
+        val finetune: String? = null,
+        val quantizationVersion: Int? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.ArchitectureInfo) = ArchitectureInfo(
+                architecture = domain.architecture,
+                fileType = domain.fileType,
+                vocabSize = domain.vocabSize,
+                finetune = domain.finetune,
+                quantizationVersion = domain.quantizationVersion
+            )
+        }
+    }
+
+    @Serializable
+    data class BaseModelInfo(
+        val name: String? = null,
+        val author: String? = null,
+        val version: String? = null,
+        val organization: String? = null,
+        val url: String? = null,
+        val doi: String? = null,
+        val uuid: String? = null,
+        val repoUrl: String? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.BaseModelInfo) = BaseModelInfo(
+                name = domain.name,
+                author = domain.author,
+                version = domain.version,
+                organization = domain.organization,
+                url = domain.url,
+                doi = domain.doi,
+                uuid = domain.uuid,
+                repoUrl = domain.repoUrl
+            )
+        }
+    }
+
+    @Serializable
+    data class TokenizerInfo(
+        val model: String? = null,
+        val bosTokenId: Int? = null,
+        val eosTokenId: Int? = null,
+        val unknownTokenId: Int? = null,
+        val paddingTokenId: Int? = null,
+        val addBosToken: Boolean? = null,
+        val addEosToken: Boolean? = null,
+        val chatTemplate: String? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.TokenizerInfo) = TokenizerInfo(
+                model = domain.model,
+                bosTokenId = domain.bosTokenId,
+                eosTokenId = domain.eosTokenId,
+                unknownTokenId = domain.unknownTokenId,
+                paddingTokenId = domain.paddingTokenId,
+                addBosToken = domain.addBosToken,
+                addEosToken = domain.addEosToken,
+                chatTemplate = domain.chatTemplate
+            )
+        }
+    }
+
+    @Serializable
+    data class DimensionsInfo(
+        val contextLength: Int? = null,
+        val embeddingSize: Int? = null,
+        val blockCount: Int? = null,
+        val feedForwardSize: Int? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.DimensionsInfo) = DimensionsInfo(
+                contextLength = domain.contextLength,
+                embeddingSize = domain.embeddingSize,
+                blockCount = domain.blockCount,
+                feedForwardSize = domain.feedForwardSize
+            )
+        }
+    }
+
+    @Serializable
+    data class AttentionInfo(
+        val headCount: Int? = null,
+        val headCountKv: Int? = null,
+        val keyLength: Int? = null,
+        val valueLength: Int? = null,
+        val layerNormEpsilon: Float? = null,
+        val layerNormRmsEpsilon: Float? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.AttentionInfo) = AttentionInfo(
+                headCount = domain.headCount,
+                headCountKv = domain.headCountKv,
+                keyLength = domain.keyLength,
+                valueLength = domain.valueLength,
+                layerNormEpsilon = domain.layerNormEpsilon,
+                layerNormRmsEpsilon = domain.layerNormRmsEpsilon
+            )
+        }
+    }
+
+    @Serializable
+    data class RopeInfo(
+        val frequencyBase: Float? = null,
+        val dimensionCount: Int? = null,
+        val scalingType: String? = null,
+        val scalingFactor: Float? = null,
+        val attnFactor: Float? = null,
+        val originalContextLength: Int? = null,
+        val finetuned: Boolean? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.RopeInfo) = RopeInfo(
+                frequencyBase = domain.frequencyBase,
+                dimensionCount = domain.dimensionCount,
+                scalingType = domain.scalingType,
+                scalingFactor = domain.scalingFactor,
+                attnFactor = domain.attnFactor,
+                originalContextLength = domain.originalContextLength,
+                finetuned = domain.finetuned
+            )
+        }
+    }
+
+    @Serializable
+    data class ExpertsInfo(
+        val count: Int? = null,
+        val usedCount: Int? = null,
+    ) {
+        companion object {
+            fun fromDomain(domain: Domain.ExpertsInfo) = ExpertsInfo(
+                count = domain.count,
+                usedCount = domain.usedCount
+            )
+        }
+    }
+
+    companion object {
+        fun fromDomain(domain: Domain) = GgufMetadata(
+            version = GgufVersion.fromDomain(domain.version),
+            tensorCount = domain.tensorCount,
+            kvCount = domain.kvCount,
+            basic = BasicInfo.fromDomain(domain.basic),
+            author = domain.author?.let { AuthorInfo.fromDomain(it) },
+            additional = domain.additional?.let { AdditionalInfo.fromDomain(it) },
+            architecture = domain.architecture?.let { ArchitectureInfo.fromDomain(it) },
+            baseModels = domain.baseModels?.map { BaseModelInfo.fromDomain(it) },
+            tokenizer = domain.tokenizer?.let { TokenizerInfo.fromDomain(it) },
+            dimensions = domain.dimensions?.let { DimensionsInfo.fromDomain(it) },
+            attention = domain.attention?.let { AttentionInfo.fromDomain(it) },
+            rope = domain.rope?.let { RopeInfo.fromDomain(it) },
+            experts = domain.experts?.let { ExpertsInfo.fromDomain(it) }
+        )
+    }
+}

examples/llama.android/app/src/main/java/com/example/llama/data/model/ModelInfo.kt

@@ -1,7 +1,6 @@
 package com.example.llama.data.model
 
-import com.example.llama.util.FileType
+import android.llama.cpp.gguf.FileType
-import com.example.llama.util.GgufMetadata
 import com.example.llama.util.formatContextLength
 import com.example.llama.util.formatFileByteSize
 

examples/llama.android/app/src/main/java/com/example/llama/data/repository/ModelRepository.kt

@@ -1,18 +1,18 @@
 package com.example.llama.data.repository
 
 import android.content.Context
+import android.llama.cpp.gguf.GgufMetadataReader
 import android.net.Uri
 import android.os.StatFs
 import android.util.Log
 import com.example.llama.data.local.dao.ModelDao
 import com.example.llama.data.local.entity.ModelEntity
+import com.example.llama.data.model.GgufMetadata
 import com.example.llama.data.model.ModelInfo
 import com.example.llama.data.remote.HuggingFaceModel
 import com.example.llama.data.remote.HuggingFaceRemoteDataSource
 import com.example.llama.data.repository.ModelRepository.ImportProgressTracker
 import com.example.llama.monitoring.StorageMetrics
-import com.example.llama.util.GgufMetadata
-import com.example.llama.util.GgufMetadataReader
 import com.example.llama.util.copyWithBuffer
 import com.example.llama.util.copyWithChannels
 import com.example.llama.util.formatFileByteSize
@@ -224,7 +224,7 @@ class ModelRepositoryImpl @Inject constructor(
             val metadata = try {
                 val filePath = modelFile.absolutePath
                 Log.i(TAG, "Extracting GGUF Metadata from $filePath")
-                GgufMetadataReader().readStructuredMetadata(filePath)
+                GgufMetadata.fromDomain(GgufMetadataReader().readStructuredMetadata(filePath))
             } catch (e: Exception) {
                 Log.e(TAG, "Cannot extract GGUF metadata: ${e.message}", e)
                 throw e

examples/llama.android/app/src/main/java/com/example/llama/ui/screens/ModelDetailsScreen.kt

@@ -1,5 +1,6 @@
 package com.example.llama.ui.screens
 
+import android.llama.cpp.gguf.FileType
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
@@ -25,7 +26,6 @@ import com.example.llama.data.model.ModelInfo
 import com.example.llama.ui.components.ModelCardContentArchitectureRow
 import com.example.llama.ui.components.ModelCardContentContextRow
 import com.example.llama.ui.components.ModelCardContentTitleRow
-import com.example.llama.util.FileType
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale

examples/llama.android/llama/src/main/java/android/llama/cpp/gguf/GgufMetadata.kt

@@ -1,13 +1,11 @@
-package com.example.llama.util
+package android.llama.cpp.gguf
 
-import kotlinx.serialization.Serializable
 import java.io.IOException
 
 
 /**
  * Structured metadata of GGUF
  */
-@Serializable
 data class GgufMetadata(
     // Basic file info
     val version: GgufVersion,
@@ -28,46 +26,6 @@ data class GgufMetadata(
     val rope: RopeInfo? = null,
     val experts: ExpertsInfo? = null
 ) {
-    /** Human-readable full model name + size */
-    val fullModelName: String?
-        get() = when {
-            basic.nameLabel != null -> basic.nameLabel
-            basic.name != null && basic.sizeLabel != null -> "${basic.name}-${basic.sizeLabel}"
-            basic.name != null -> basic.name
-            else -> null
-        }
-
-    /** Human‑readable model name (spaces). */
-    val primaryName: String?
-        get() = basic.nameLabel
-            ?: baseModels?.firstNotNullOfOrNull { it.name }
-            ?: basic.name
-
-    /** CLI‑friendly slug (hyphens). */
-    val primaryBasename: String?
-        get() = basic.name
-            ?: baseModels?.firstNotNullOfOrNull { it.name?.replace(' ', '-') }
-
-    /** URL pointing to model homepage/repo. */
-    val primaryUrl: String?
-        get() = author?.url
-            ?: baseModels?.firstNotNullOfOrNull { it.url }
-
-    val primaryRepoUrl: String?
-        get() = author?.repoUrl
-            ?: baseModels?.firstNotNullOfOrNull { it.repoUrl }
-
-    /** Organisation string. */
-    val primaryOrganization: String?
-        get() = author?.organization
-            ?: baseModels?.firstNotNullOfOrNull { it.organization }
-
-    /** Author string. */
-    val primaryAuthor: String?
-        get() = author?.author
-            ?: baseModels?.firstNotNullOfOrNull { it.author }
-
-    @Serializable
     enum class GgufVersion(val code: Int, val label: String) {
         /** First public draft; little‑endian only, no alignment key. */
         LEGACY_V1(1, "Legacy v1"),
@@ -87,7 +45,6 @@ data class GgufMetadata(
         override fun toString(): String = "$label (code=$code)"
     }
 
-    @Serializable
     data class BasicInfo(
         val uuid: String? = null,
         val name: String? = null,
@@ -95,7 +52,6 @@ data class GgufMetadata(
         val sizeLabel: String? = null,  // Size label like "7B"
     )
 
-    @Serializable
     data class AuthorInfo(
         val organization: String? = null,
         val author: String? = null,
@@ -106,7 +62,6 @@ data class GgufMetadata(
         val licenseLink: String? = null,
     )
 
-    @Serializable
     data class AdditionalInfo(
         val type: String? = null,
         val description: String? = null,
@@ -114,7 +69,6 @@ data class GgufMetadata(
         val languages: List<String>? = null,
     )
 
-    @Serializable
     data class ArchitectureInfo(
         val architecture: String? = null,
         val fileType: Int? = null,
@@ -123,7 +77,6 @@ data class GgufMetadata(
         val quantizationVersion: Int? = null,
     )
 
-    @Serializable
     data class BaseModelInfo(
         val name: String? = null,
         val author: String? = null,
@@ -135,7 +88,6 @@ data class GgufMetadata(
         val repoUrl: String? = null,
     )
 
-    @Serializable
     data class TokenizerInfo(
         val model: String? = null,
         val bosTokenId: Int? = null,
@@ -147,7 +99,6 @@ data class GgufMetadata(
         val chatTemplate: String? = null,
     )
 
-    @Serializable
     data class DimensionsInfo(
         val contextLength: Int? = null,
         val embeddingSize: Int? = null,
@@ -155,7 +106,6 @@ data class GgufMetadata(
         val feedForwardSize: Int? = null,
     )
 
-    @Serializable
     data class AttentionInfo(
         val headCount: Int? = null,
         val headCountKv: Int? = null,
@@ -165,7 +115,6 @@ data class GgufMetadata(
         val layerNormRmsEpsilon: Float? = null,
     )
 
-    @Serializable
     data class RopeInfo(
         val frequencyBase: Float? = null,
         val dimensionCount: Int? = null,
@@ -176,7 +125,6 @@ data class GgufMetadata(
         val finetuned: Boolean? = null,
     )
 
-    @Serializable
     data class ExpertsInfo(
         val count: Int? = null,
         val usedCount: Int? = null,

examples/llama.android/llama/src/main/java/android/llama/cpp/gguf/GgufMetadataReader.kt

@@ -1,8 +1,8 @@
-package com.example.llama.util
+package android.llama.cpp.gguf
 
 import java.io.File
-import java.io.InputStream
 import java.io.IOException
+import java.io.InputStream
 
 private val DEFAULT_SKIP_KEYS = setOf(
     "tokenizer.chat_template",