NativeGallery.cs
28.1 KB
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using System;
using System.IO;
using UnityEngine;
using Object = UnityEngine.Object;
#if UNITY_ANDROID || UNITY_IOS
using NativeGalleryNamespace;
#endif
public static class NativeGallery
{
public struct ImageProperties
{
public readonly int width;
public readonly int height;
public readonly string mimeType;
public readonly ImageOrientation orientation;
public ImageProperties( int width, int height, string mimeType, ImageOrientation orientation )
{
this.width = width;
this.height = height;
this.mimeType = mimeType;
this.orientation = orientation;
}
}
public struct VideoProperties
{
public readonly int width;
public readonly int height;
public readonly long duration;
public readonly float rotation;
public VideoProperties( int width, int height, long duration, float rotation )
{
this.width = width;
this.height = height;
this.duration = duration;
this.rotation = rotation;
}
}
public enum PermissionType { Read = 0, Write = 1 };
public enum Permission { Denied = 0, Granted = 1, ShouldAsk = 2 };
[Flags]
public enum MediaType { Image = 1, Video = 2, Audio = 4 };
// EXIF orientation: http://sylvana.net/jpegcrop/exif_orientation.html (indices are reordered)
public enum ImageOrientation { Unknown = -1, Normal = 0, Rotate90 = 1, Rotate180 = 2, Rotate270 = 3, FlipHorizontal = 4, Transpose = 5, FlipVertical = 6, Transverse = 7 };
public delegate void MediaSaveCallback( bool success, string path );
public delegate void MediaPickCallback( string path );
public delegate void MediaPickMultipleCallback( string[] paths );
#region Platform Specific Elements
#if !UNITY_EDITOR && UNITY_ANDROID
private static AndroidJavaClass m_ajc = null;
private static AndroidJavaClass AJC
{
get
{
if( m_ajc == null )
m_ajc = new AndroidJavaClass( "com.yasirkula.unity.NativeGallery" );
return m_ajc;
}
}
private static AndroidJavaObject m_context = null;
private static AndroidJavaObject Context
{
get
{
if( m_context == null )
{
using( AndroidJavaObject unityClass = new AndroidJavaClass( "com.unity3d.player.UnityPlayer" ) )
{
m_context = unityClass.GetStatic<AndroidJavaObject>( "currentActivity" );
}
}
return m_context;
}
}
#elif !UNITY_EDITOR && UNITY_IOS
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern int _NativeGallery_CheckPermission( int readPermission, int permissionFreeMode );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern int _NativeGallery_RequestPermission( int readPermission, int permissionFreeMode );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern void _NativeGallery_ShowLimitedLibraryPicker();
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern int _NativeGallery_CanOpenSettings();
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern void _NativeGallery_OpenSettings();
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern int _NativeGallery_CanPickMultipleMedia();
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern int _NativeGallery_GetMediaTypeFromExtension( string extension );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern void _NativeGallery_ImageWriteToAlbum( string path, string album, int permissionFreeMode );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern void _NativeGallery_VideoWriteToAlbum( string path, string album, int permissionFreeMode );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern void _NativeGallery_PickMedia( string mediaSavePath, int mediaType, int permissionFreeMode, int selectionLimit );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern string _NativeGallery_GetImageProperties( string path );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern string _NativeGallery_GetVideoProperties( string path );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern string _NativeGallery_GetVideoThumbnail( string path, string thumbnailSavePath, int maxSize, double captureTimeInSeconds );
[System.Runtime.InteropServices.DllImport( "__Internal" )]
private static extern string _NativeGallery_LoadImageAtPath( string path, string temporaryFilePath, int maxSize );
#endif
#if !UNITY_EDITOR && ( UNITY_ANDROID || UNITY_IOS )
private static string m_temporaryImagePath = null;
private static string TemporaryImagePath
{
get
{
if( m_temporaryImagePath == null )
{
m_temporaryImagePath = Path.Combine( Application.temporaryCachePath, "tmpImg" );
Directory.CreateDirectory( Application.temporaryCachePath );
}
return m_temporaryImagePath;
}
}
private static string m_selectedMediaPath = null;
private static string SelectedMediaPath
{
get
{
if( m_selectedMediaPath == null )
{
m_selectedMediaPath = Path.Combine( Application.temporaryCachePath, "pickedMedia" );
Directory.CreateDirectory( Application.temporaryCachePath );
}
return m_selectedMediaPath;
}
}
#endif
#endregion
#region Runtime Permissions
// PermissionFreeMode was initially planned to be a toggleable setting on iOS but it has its own issues when set to false, so its value is forced to true.
// These issues are:
// - Presented permission dialog will have a "Select Photos" option on iOS 14+ but clicking it will freeze and eventually crash the app (I'm guessing that
// this is caused by how permissions are handled synchronously in NativeGallery)
// - While saving images/videos to Photos, iOS 14+ users would see the "Select Photos" option (which is irrelevant in this context, hence confusing) and
// the user must grant full Photos access in order to save the image/video to a custom album
// The only downside of having PermissionFreeMode = true is that, on iOS 14+, images/videos will be saved to the default Photos album rather than the
// provided custom album
private const bool PermissionFreeMode = true;
public static Permission CheckPermission( PermissionType permissionType )
{
#if !UNITY_EDITOR && UNITY_ANDROID
Permission result = (Permission) AJC.CallStatic<int>( "CheckPermission", Context, permissionType == PermissionType.Read );
if( result == Permission.Denied && (Permission) PlayerPrefs.GetInt( "NativeGalleryPermission", (int) Permission.ShouldAsk ) == Permission.ShouldAsk )
result = Permission.ShouldAsk;
return result;
#elif !UNITY_EDITOR && UNITY_IOS
// result == 3: LimitedAccess permission on iOS, no need to handle it when PermissionFreeMode is set to true
int result = _NativeGallery_CheckPermission( permissionType == PermissionType.Read ? 1 : 0, PermissionFreeMode ? 1 : 0 );
return result == 3 ? Permission.Granted : (Permission) result;
#else
return Permission.Granted;
#endif
}
public static Permission RequestPermission( PermissionType permissionType )
{
#if !UNITY_EDITOR && UNITY_ANDROID
object threadLock = new object();
lock( threadLock )
{
NGPermissionCallbackAndroid nativeCallback = new NGPermissionCallbackAndroid( threadLock );
AJC.CallStatic( "RequestPermission", Context, nativeCallback, permissionType == PermissionType.Read, PlayerPrefs.GetInt( "NativeGalleryPermission", (int) Permission.ShouldAsk ) );
if( nativeCallback.Result == -1 )
System.Threading.Monitor.Wait( threadLock );
if( (Permission) nativeCallback.Result != Permission.ShouldAsk && PlayerPrefs.GetInt( "NativeGalleryPermission", -1 ) != nativeCallback.Result )
{
PlayerPrefs.SetInt( "NativeGalleryPermission", nativeCallback.Result );
PlayerPrefs.Save();
}
return (Permission) nativeCallback.Result;
}
#elif !UNITY_EDITOR && UNITY_IOS
// result == 3: LimitedAccess permission on iOS, no need to handle it when PermissionFreeMode is set to true
int result = _NativeGallery_RequestPermission( permissionType == PermissionType.Read ? 1 : 0, PermissionFreeMode ? 1 : 0 );
return result == 3 ? Permission.Granted : (Permission) result;
#else
return Permission.Granted;
#endif
}
// This function isn't needed when PermissionFreeMode is set to true
private static void TryExtendLimitedAccessPermission()
{
if( IsMediaPickerBusy() )
return;
#if !UNITY_EDITOR && UNITY_IOS
_NativeGallery_ShowLimitedLibraryPicker();
#endif
}
public static bool CanOpenSettings()
{
#if !UNITY_EDITOR && UNITY_IOS
return _NativeGallery_CanOpenSettings() == 1;
#else
return true;
#endif
}
public static void OpenSettings()
{
#if !UNITY_EDITOR && UNITY_ANDROID
AJC.CallStatic( "OpenSettings", Context );
#elif !UNITY_EDITOR && UNITY_IOS
_NativeGallery_OpenSettings();
#endif
}
#endregion
#region Save Functions
public static Permission SaveImageToGallery( byte[] mediaBytes, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( mediaBytes, album, filename, MediaType.Image, callback );
}
public static Permission SaveImageToGallery( string existingMediaPath, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( existingMediaPath, album, filename, MediaType.Image, callback );
}
public static Permission SaveImageToGallery( Texture2D image, string album, string filename, MediaSaveCallback callback = null )
{
if( image == null )
throw new ArgumentException( "Parameter 'image' is null!" );
if( filename.EndsWith( ".jpeg", StringComparison.OrdinalIgnoreCase ) || filename.EndsWith( ".jpg", StringComparison.OrdinalIgnoreCase ) )
return SaveToGallery( GetTextureBytes( image, true ), album, filename, MediaType.Image, callback );
else if( filename.EndsWith( ".png", StringComparison.OrdinalIgnoreCase ) )
return SaveToGallery( GetTextureBytes( image, false ), album, filename, MediaType.Image, callback );
else
return SaveToGallery( GetTextureBytes( image, false ), album, filename + ".png", MediaType.Image, callback );
}
public static Permission SaveVideoToGallery( byte[] mediaBytes, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( mediaBytes, album, filename, MediaType.Video, callback );
}
public static Permission SaveVideoToGallery( string existingMediaPath, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( existingMediaPath, album, filename, MediaType.Video, callback );
}
private static Permission SaveAudioToGallery( byte[] mediaBytes, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( mediaBytes, album, filename, MediaType.Audio, callback );
}
private static Permission SaveAudioToGallery( string existingMediaPath, string album, string filename, MediaSaveCallback callback = null )
{
return SaveToGallery( existingMediaPath, album, filename, MediaType.Audio, callback );
}
#endregion
#region Load Functions
public static bool CanSelectMultipleFilesFromGallery()
{
#if !UNITY_EDITOR && UNITY_ANDROID
return AJC.CallStatic<bool>( "CanSelectMultipleMedia" );
#elif !UNITY_EDITOR && UNITY_IOS
return _NativeGallery_CanPickMultipleMedia() == 1;
#else
return false;
#endif
}
public static bool CanSelectMultipleMediaTypesFromGallery()
{
#if UNITY_EDITOR
return true;
#elif UNITY_ANDROID
return AJC.CallStatic<bool>( "CanSelectMultipleMediaTypes" );
#elif UNITY_IOS
return true;
#else
return false;
#endif
}
public static Permission GetImageFromGallery( MediaPickCallback callback, string title = "", string mime = "image/*" )
{
return GetMediaFromGallery( callback, MediaType.Image, mime, title );
}
public static Permission GetVideoFromGallery( MediaPickCallback callback, string title = "", string mime = "video/*" )
{
return GetMediaFromGallery( callback, MediaType.Video, mime, title );
}
public static Permission GetAudioFromGallery( MediaPickCallback callback, string title = "", string mime = "audio/*" )
{
return GetMediaFromGallery( callback, MediaType.Audio, mime, title );
}
public static Permission GetMixedMediaFromGallery( MediaPickCallback callback, MediaType mediaTypes, string title = "" )
{
return GetMediaFromGallery( callback, mediaTypes, "*/*", title );
}
public static Permission GetImagesFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "image/*" )
{
return GetMultipleMediaFromGallery( callback, MediaType.Image, mime, title );
}
public static Permission GetVideosFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "video/*" )
{
return GetMultipleMediaFromGallery( callback, MediaType.Video, mime, title );
}
public static Permission GetAudiosFromGallery( MediaPickMultipleCallback callback, string title = "", string mime = "audio/*" )
{
return GetMultipleMediaFromGallery( callback, MediaType.Audio, mime, title );
}
public static Permission GetMixedMediasFromGallery( MediaPickMultipleCallback callback, MediaType mediaTypes, string title = "" )
{
return GetMultipleMediaFromGallery( callback, mediaTypes, "*/*", title );
}
public static bool IsMediaPickerBusy()
{
#if !UNITY_EDITOR && UNITY_IOS
return NGMediaReceiveCallbackiOS.IsBusy;
#else
return false;
#endif
}
public static MediaType GetMediaTypeOfFile( string path )
{
if( string.IsNullOrEmpty( path ) )
return (MediaType) 0;
string extension = Path.GetExtension( path );
if( string.IsNullOrEmpty( extension ) )
return (MediaType) 0;
if( extension[0] == '.' )
{
if( extension.Length == 1 )
return (MediaType) 0;
extension = extension.Substring( 1 );
}
#if UNITY_EDITOR
extension = extension.ToLowerInvariant();
if( extension == "png" || extension == "jpg" || extension == "jpeg" || extension == "gif" || extension == "bmp" || extension == "tiff" )
return MediaType.Image;
else if( extension == "mp4" || extension == "mov" || extension == "wav" || extension == "avi" )
return MediaType.Video;
else if( extension == "mp3" || extension == "aac" || extension == "flac" )
return MediaType.Audio;
return (MediaType) 0;
#elif UNITY_ANDROID
string mime = AJC.CallStatic<string>( "GetMimeTypeFromExtension", extension.ToLowerInvariant() );
if( string.IsNullOrEmpty( mime ) )
return (MediaType) 0;
else if( mime.StartsWith( "image/" ) )
return MediaType.Image;
else if( mime.StartsWith( "video/" ) )
return MediaType.Video;
else if( mime.StartsWith( "audio/" ) )
return MediaType.Audio;
else
return (MediaType) 0;
#elif UNITY_IOS
return (MediaType) _NativeGallery_GetMediaTypeFromExtension( extension.ToLowerInvariant() );
#else
return (MediaType) 0;
#endif
}
#endregion
#region Internal Functions
private static Permission SaveToGallery( byte[] mediaBytes, string album, string filename, MediaType mediaType, MediaSaveCallback callback )
{
Permission result = RequestPermission( PermissionType.Write );
if( result == Permission.Granted )
{
if( mediaBytes == null || mediaBytes.Length == 0 )
throw new ArgumentException( "Parameter 'mediaBytes' is null or empty!" );
if( album == null || album.Length == 0 )
throw new ArgumentException( "Parameter 'album' is null or empty!" );
if( filename == null || filename.Length == 0 )
throw new ArgumentException( "Parameter 'filename' is null or empty!" );
if( string.IsNullOrEmpty( Path.GetExtension( filename ) ) )
Debug.LogWarning( "'filename' doesn't have an extension, this might result in unexpected behaviour!" );
string path = GetTemporarySavePath( filename );
#if UNITY_EDITOR
Debug.Log( "SaveToGallery called successfully in the Editor" );
#else
File.WriteAllBytes( path, mediaBytes );
#endif
SaveToGalleryInternal( path, album, mediaType, callback );
}
return result;
}
private static Permission SaveToGallery( string existingMediaPath, string album, string filename, MediaType mediaType, MediaSaveCallback callback )
{
Permission result = RequestPermission( PermissionType.Write );
if( result == Permission.Granted )
{
if( !File.Exists( existingMediaPath ) )
throw new FileNotFoundException( "File not found at " + existingMediaPath );
if( album == null || album.Length == 0 )
throw new ArgumentException( "Parameter 'album' is null or empty!" );
if( filename == null || filename.Length == 0 )
throw new ArgumentException( "Parameter 'filename' is null or empty!" );
if( string.IsNullOrEmpty( Path.GetExtension( filename ) ) )
{
string originalExtension = Path.GetExtension( existingMediaPath );
if( string.IsNullOrEmpty( originalExtension ) )
Debug.LogWarning( "'filename' doesn't have an extension, this might result in unexpected behaviour!" );
else
filename += originalExtension;
}
string path = GetTemporarySavePath( filename );
#if UNITY_EDITOR
Debug.Log( "SaveToGallery called successfully in the Editor" );
#else
File.Copy( existingMediaPath, path, true );
#endif
SaveToGalleryInternal( path, album, mediaType, callback );
}
return result;
}
private static void SaveToGalleryInternal( string path, string album, MediaType mediaType, MediaSaveCallback callback )
{
#if !UNITY_EDITOR && UNITY_ANDROID
string savePath = AJC.CallStatic<string>( "SaveMedia", Context, (int) mediaType, path, album );
File.Delete( path );
if( callback != null )
callback( !string.IsNullOrEmpty( savePath ), savePath );
#elif !UNITY_EDITOR && UNITY_IOS
if( mediaType == MediaType.Audio )
{
Debug.LogError( "Saving audio files is not supported on iOS" );
if( callback != null )
callback( false, null );
return;
}
Debug.Log( "Saving to Pictures: " + Path.GetFileName( path ) );
NGMediaSaveCallbackiOS.Initialize( callback );
if( mediaType == MediaType.Image )
_NativeGallery_ImageWriteToAlbum( path, album, PermissionFreeMode ? 1 : 0 );
else if( mediaType == MediaType.Video )
_NativeGallery_VideoWriteToAlbum( path, album, PermissionFreeMode ? 1 : 0 );
#else
if( callback != null )
callback( true, null );
#endif
}
private static string GetTemporarySavePath( string filename )
{
string saveDir = Path.Combine( Application.persistentDataPath, "NGallery" );
Directory.CreateDirectory( saveDir );
#if !UNITY_EDITOR && UNITY_IOS
// Ensure a unique temporary filename on iOS:
// iOS internally copies images/videos to Photos directory of the system,
// but the process is async. The redundant file is deleted by objective-c code
// automatically after the media is saved but while it is being saved, the file
// should NOT be overwritten. Therefore, always ensure a unique filename on iOS
string path = Path.Combine( saveDir, filename );
if( File.Exists( path ) )
{
int fileIndex = 0;
string filenameWithoutExtension = Path.GetFileNameWithoutExtension( filename );
string extension = Path.GetExtension( filename );
do
{
path = Path.Combine( saveDir, string.Concat( filenameWithoutExtension, ++fileIndex, extension ) );
} while( File.Exists( path ) );
}
return path;
#else
return Path.Combine( saveDir, filename );
#endif
}
private static Permission GetMediaFromGallery( MediaPickCallback callback, MediaType mediaType, string mime, string title )
{
Permission result = RequestPermission( PermissionType.Read );
if( result == Permission.Granted && !IsMediaPickerBusy() )
{
#if UNITY_EDITOR
System.Collections.Generic.List<string> editorFilters = new System.Collections.Generic.List<string>( 4 );
if( ( mediaType & MediaType.Image ) == MediaType.Image )
{
editorFilters.Add( "Image files" );
editorFilters.Add( "png,jpg,jpeg" );
}
if( ( mediaType & MediaType.Video ) == MediaType.Video )
{
editorFilters.Add( "Video files" );
editorFilters.Add( "mp4,mov,wav,avi" );
}
if( ( mediaType & MediaType.Audio ) == MediaType.Audio )
{
editorFilters.Add( "Audio files" );
editorFilters.Add( "mp3,aac,flac" );
}
editorFilters.Add( "All files" );
editorFilters.Add( "*" );
string pickedFile = UnityEditor.EditorUtility.OpenFilePanelWithFilters( "Select file", "", editorFilters.ToArray() );
if( callback != null )
callback( pickedFile != "" ? pickedFile : null );
#elif UNITY_ANDROID
AJC.CallStatic( "PickMedia", Context, new NGMediaReceiveCallbackAndroid( callback, null ), (int) mediaType, false, SelectedMediaPath, mime, title );
#elif UNITY_IOS
if( mediaType == MediaType.Audio )
{
Debug.LogError( "Picking audio files is not supported on iOS" );
if( callback != null ) // Selecting audio files is not supported on iOS
callback( null );
}
else
{
NGMediaReceiveCallbackiOS.Initialize( callback, null );
_NativeGallery_PickMedia( SelectedMediaPath, (int) ( mediaType & ~MediaType.Audio ), PermissionFreeMode ? 1 : 0, 1 );
}
#else
if( callback != null )
callback( null );
#endif
}
return result;
}
private static Permission GetMultipleMediaFromGallery( MediaPickMultipleCallback callback, MediaType mediaType, string mime, string title )
{
Permission result = RequestPermission( PermissionType.Read );
if( result == Permission.Granted && !IsMediaPickerBusy() )
{
if( CanSelectMultipleFilesFromGallery() )
{
#if !UNITY_EDITOR && UNITY_ANDROID
AJC.CallStatic( "PickMedia", Context, new NGMediaReceiveCallbackAndroid( null, callback ), (int) mediaType, true, SelectedMediaPath, mime, title );
#elif !UNITY_EDITOR && UNITY_IOS
if( mediaType == MediaType.Audio )
{
Debug.LogError( "Picking audio files is not supported on iOS" );
if( callback != null ) // Selecting audio files is not supported on iOS
callback( null );
}
else
{
NGMediaReceiveCallbackiOS.Initialize( null, callback );
_NativeGallery_PickMedia( SelectedMediaPath, (int) ( mediaType & ~MediaType.Audio ), PermissionFreeMode ? 1 : 0, 0 );
}
#else
if( callback != null )
callback( null );
#endif
}
else if( callback != null )
callback( null );
}
return result;
}
private static byte[] GetTextureBytes( Texture2D texture, bool isJpeg )
{
try
{
return isJpeg ? texture.EncodeToJPG( 100 ) : texture.EncodeToPNG();
}
catch( UnityException )
{
return GetTextureBytesFromCopy( texture, isJpeg );
}
catch( ArgumentException )
{
return GetTextureBytesFromCopy( texture, isJpeg );
}
#pragma warning disable 0162
return null;
#pragma warning restore 0162
}
private static byte[] GetTextureBytesFromCopy( Texture2D texture, bool isJpeg )
{
// Texture is marked as non-readable, create a readable copy and save it instead
Debug.LogWarning( "Saving non-readable textures is slower than saving readable textures" );
Texture2D sourceTexReadable = null;
RenderTexture rt = RenderTexture.GetTemporary( texture.width, texture.height );
RenderTexture activeRT = RenderTexture.active;
try
{
Graphics.Blit( texture, rt );
RenderTexture.active = rt;
sourceTexReadable = new Texture2D( texture.width, texture.height, isJpeg ? TextureFormat.RGB24 : TextureFormat.RGBA32, false );
sourceTexReadable.ReadPixels( new Rect( 0, 0, texture.width, texture.height ), 0, 0, false );
sourceTexReadable.Apply( false, false );
}
catch( Exception e )
{
Debug.LogException( e );
Object.DestroyImmediate( sourceTexReadable );
return null;
}
finally
{
RenderTexture.active = activeRT;
RenderTexture.ReleaseTemporary( rt );
}
try
{
return isJpeg ? sourceTexReadable.EncodeToJPG( 100 ) : sourceTexReadable.EncodeToPNG();
}
catch( Exception e )
{
Debug.LogException( e );
return null;
}
finally
{
Object.DestroyImmediate( sourceTexReadable );
}
}
#endregion
#region Utility Functions
public static Texture2D LoadImageAtPath( string imagePath, int maxSize = -1, bool markTextureNonReadable = true,
bool generateMipmaps = true, bool linearColorSpace = false )
{
if( string.IsNullOrEmpty( imagePath ) )
throw new ArgumentException( "Parameter 'imagePath' is null or empty!" );
if( !File.Exists( imagePath ) )
throw new FileNotFoundException( "File not found at " + imagePath );
if( maxSize <= 0 )
maxSize = SystemInfo.maxTextureSize;
#if !UNITY_EDITOR && UNITY_ANDROID
string loadPath = AJC.CallStatic<string>( "LoadImageAtPath", Context, imagePath, TemporaryImagePath, maxSize );
#elif !UNITY_EDITOR && UNITY_IOS
string loadPath = _NativeGallery_LoadImageAtPath( imagePath, TemporaryImagePath, maxSize );
#else
string loadPath = imagePath;
#endif
string extension = Path.GetExtension( imagePath ).ToLowerInvariant();
TextureFormat format = ( extension == ".jpg" || extension == ".jpeg" ) ? TextureFormat.RGB24 : TextureFormat.RGBA32;
Texture2D result = new Texture2D( 2, 2, format, generateMipmaps, linearColorSpace );
try
{
if( !result.LoadImage( File.ReadAllBytes( loadPath ), markTextureNonReadable ) )
{
Object.DestroyImmediate( result );
return null;
}
}
catch( Exception e )
{
Debug.LogException( e );
Object.DestroyImmediate( result );
return null;
}
finally
{
if( loadPath != imagePath )
{
try
{
File.Delete( loadPath );
}
catch { }
}
}
return result;
}
public static Texture2D GetVideoThumbnail( string videoPath, int maxSize = -1, double captureTimeInSeconds = -1.0, bool markTextureNonReadable = true )
{
if( maxSize <= 0 )
maxSize = SystemInfo.maxTextureSize;
#if !UNITY_EDITOR && UNITY_ANDROID
string thumbnailPath = AJC.CallStatic<string>( "GetVideoThumbnail", Context, videoPath, TemporaryImagePath + ".png", false, maxSize, captureTimeInSeconds );
#elif !UNITY_EDITOR && UNITY_IOS
string thumbnailPath = _NativeGallery_GetVideoThumbnail( videoPath, TemporaryImagePath + ".png", maxSize, captureTimeInSeconds );
#else
string thumbnailPath = null;
#endif
if( !string.IsNullOrEmpty( thumbnailPath ) )
return LoadImageAtPath( thumbnailPath, maxSize, markTextureNonReadable );
else
return null;
}
public static ImageProperties GetImageProperties( string imagePath )
{
if( !File.Exists( imagePath ) )
throw new FileNotFoundException( "File not found at " + imagePath );
#if !UNITY_EDITOR && UNITY_ANDROID
string value = AJC.CallStatic<string>( "GetImageProperties", Context, imagePath );
#elif !UNITY_EDITOR && UNITY_IOS
string value = _NativeGallery_GetImageProperties( imagePath );
#else
string value = null;
#endif
int width = 0, height = 0;
string mimeType = null;
ImageOrientation orientation = ImageOrientation.Unknown;
if( !string.IsNullOrEmpty( value ) )
{
string[] properties = value.Split( '>' );
if( properties != null && properties.Length >= 4 )
{
if( !int.TryParse( properties[0].Trim(), out width ) )
width = 0;
if( !int.TryParse( properties[1].Trim(), out height ) )
height = 0;
mimeType = properties[2].Trim();
if( mimeType.Length == 0 )
{
string extension = Path.GetExtension( imagePath ).ToLowerInvariant();
if( extension == ".png" )
mimeType = "image/png";
else if( extension == ".jpg" || extension == ".jpeg" )
mimeType = "image/jpeg";
else if( extension == ".gif" )
mimeType = "image/gif";
else if( extension == ".bmp" )
mimeType = "image/bmp";
else
mimeType = null;
}
int orientationInt;
if( int.TryParse( properties[3].Trim(), out orientationInt ) )
orientation = (ImageOrientation) orientationInt;
}
}
return new ImageProperties( width, height, mimeType, orientation );
}
public static VideoProperties GetVideoProperties( string videoPath )
{
if( !File.Exists( videoPath ) )
throw new FileNotFoundException( "File not found at " + videoPath );
#if !UNITY_EDITOR && UNITY_ANDROID
string value = AJC.CallStatic<string>( "GetVideoProperties", Context, videoPath );
#elif !UNITY_EDITOR && UNITY_IOS
string value = _NativeGallery_GetVideoProperties( videoPath );
#else
string value = null;
#endif
int width = 0, height = 0;
long duration = 0L;
float rotation = 0f;
if( !string.IsNullOrEmpty( value ) )
{
string[] properties = value.Split( '>' );
if( properties != null && properties.Length >= 4 )
{
if( !int.TryParse( properties[0].Trim(), out width ) )
width = 0;
if( !int.TryParse( properties[1].Trim(), out height ) )
height = 0;
if( !long.TryParse( properties[2].Trim(), out duration ) )
duration = 0L;
if( !float.TryParse( properties[3].Trim(), out rotation ) )
rotation = 0f;
}
}
if( rotation == -90f )
rotation = 270f;
return new VideoProperties( width, height, duration, rotation );
}
#endregion
}