From ba9d27f57e5f48988e3a9aa6df2472e7c25a3f2f Mon Sep 17 00:00:00 2001 From: "yying.jin" Date: Mon, 29 Sep 2025 09:27:06 +0800 Subject: [PATCH 1/5] support SMPE-TT and sidebar subtitles --- .../video_player_avplay/example/lib/main.dart | 96 +- .../lib/src/closed_caption_file.dart | 212 +- .../video_player_avplay/lib/src/sub_rip.dart | 10 +- .../lib/src/video_player_tizen.dart | 3 + .../video_player_avplay/lib/src/web_vtt.dart | 10 +- .../video_player_avplay/lib/video_player.dart | 183 +- .../lib/video_player_platform_interface.dart | 30 +- .../tizen/inc/stb_image_write.h | 2019 +++++++++++++++++ .../tizen/src/plus_player.cc | 73 +- .../tizen/src/video_player.cc | 13 +- .../tizen/src/video_player.h | 4 +- 11 files changed, 2541 insertions(+), 112 deletions(-) create mode 100755 packages/video_player_avplay/tizen/inc/stb_image_write.h diff --git a/packages/video_player_avplay/example/lib/main.dart b/packages/video_player_avplay/example/lib/main.dart index ad9cec4c6..b2c26639a 100644 --- a/packages/video_player_avplay/example/lib/main.dart +++ b/packages/video_player_avplay/example/lib/main.dart @@ -22,7 +22,7 @@ class _App extends StatelessWidget { @override Widget build(BuildContext context) { return DefaultTabController( - length: 9, + length: 10, child: Scaffold( key: const ValueKey('home_page'), appBar: AppBar( @@ -39,6 +39,7 @@ class _App extends StatelessWidget { Tab(icon: Icon(Icons.cloud), text: 'Asset'), Tab(icon: Icon(Icons.live_tv), text: 'Live'), Tab(icon: Icon(Icons.local_florist), text: 'ChangeURLTest'), + Tab(icon: Icon(Icons.abc), text: 'PictureCaptionTest'), ], ), ), @@ -53,6 +54,7 @@ class _App extends StatelessWidget { _AssetVideo(), _LiveRemoteVideo(), _TestRemoteVideo(), + _PictureCaptionVideo(), ], ), ), @@ -107,7 +109,7 @@ class _HlsRomoteVideoState extends State<_HlsRomoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -155,6 +157,9 @@ class _DashRomoteVideoState extends State<_DashRomoteVideo> { if (_controller.value.hasAdInfo) { print(_controller.value.adInfo); } + if (_controller.value.hasTextStyle) { + print(_controller.value.textCaption.textStyle); + } setState(() {}); }); _controller.setLooping(true); @@ -193,7 +198,9 @@ class _DashRomoteVideoState extends State<_DashRomoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption( + text: _controller.value.textCaption.text, + textStyle: _controller.value.textCaption.textStyle), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -253,7 +260,7 @@ class _Mp4RemoteVideoState extends State<_Mp4RemoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -325,7 +332,7 @@ class _DrmRemoteVideoState extends State<_DrmRemoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -391,7 +398,7 @@ class _DrmRemoteVideoState2 extends State<_DrmRemoteVideo2> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -452,7 +459,7 @@ class _TrackTestState extends State<_TrackTest> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -514,7 +521,7 @@ class _AssetVideoState extends State<_AssetVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -824,7 +831,7 @@ class _LiveRomoteVideoState extends State<_LiveRemoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], @@ -903,7 +910,76 @@ class _TestRemoteVideoState extends State<_TestRemoteVideo> { alignment: Alignment.bottomCenter, children: [ VideoPlayer(_controller), - ClosedCaption(text: _controller.value.caption.text), + ClosedCaption(text: _controller.value.textCaption.text), + _ControlsOverlay(controller: _controller), + VideoProgressIndicator(_controller, allowScrubbing: true), + ], + ), + ), + ), + ], + ), + ); + } +} + +class _PictureCaptionVideo extends StatefulWidget { + @override + State<_PictureCaptionVideo> createState() => _PictureCaptionVideoState(); +} + +class _PictureCaptionVideoState extends State<_PictureCaptionVideo> { + late VideoPlayerController _controller; + + @override + void initState() { + super.initState(); + _controller = VideoPlayerController.network( + 'https://livesim2.dashif.org/vod/testpic_2s/imsc1_img.mpd', + formatHint: VideoFormat.dash, + ); + + _controller.addListener(() { + if (_controller.value.hasError) { + print(_controller.value.errorDescription); + } + setState(() {}); + }); + _controller.setLooping(true); + _controller.initialize().then((_) => setState(() {})); + _controller.play(); + } + + @override + void dispose() { + _controller.dispose(); + super.dispose(); + } + + @override + Widget build(BuildContext context) { + return SingleChildScrollView( + child: Column( + children: [ + Container(padding: const EdgeInsets.only(top: 20.0)), + const Text('Picture Caption Test'), + Container( + padding: const EdgeInsets.all(20), + child: AspectRatio( + aspectRatio: _controller.value.aspectRatio, + child: Stack( + alignment: Alignment.bottomCenter, + children: [ + VideoPlayer(_controller), + ClosedCaption( + text: _controller.value.textCaption.text, + textStyle: _controller.value.textCaption.textStyle, + subtitleImage: _controller.value.pictureCaption.picture, + subtitleImageWidth: + _controller.value.pictureCaption.pictureWidth, + subtitleImageHeight: + _controller.value.pictureCaption.pictureHeight, + ), _ControlsOverlay(controller: _controller), VideoProgressIndicator(_controller, allowScrubbing: true), ], diff --git a/packages/video_player_avplay/lib/src/closed_caption_file.dart b/packages/video_player_avplay/lib/src/closed_caption_file.dart index f7ca6bdfb..7ad670ce0 100644 --- a/packages/video_player_avplay/lib/src/closed_caption_file.dart +++ b/packages/video_player_avplay/lib/src/closed_caption_file.dart @@ -2,7 +2,10 @@ // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. -import 'package:flutter/foundation.dart' show immutable, objectRuntimeType; +import 'dart:typed_data' show Uint8List; +import 'package:flutter/foundation.dart' + show immutable, listEquals, objectRuntimeType; +import 'package:flutter/material.dart'; import 'sub_rip.dart'; import 'web_vtt.dart'; @@ -25,7 +28,7 @@ abstract class ClosedCaptionFile { /// The full list of captions from a given file. /// /// The [captions] will be in the order that they appear in the given file. - List get captions; + List get textCaptions; } /// A representation of a single caption. @@ -33,17 +36,14 @@ abstract class ClosedCaptionFile { /// A typical closed captioning file will include several [Caption]s, each /// linked to a start and end time. @immutable -class Caption { +sealed class Caption { /// Creates a new [Caption] object. /// - /// This is not recommended for direct use unless you are writing a parser for - /// a new closed captioning file type. + /// This constructor is for internal use by subclasses. const Caption({ required this.number, required this.start, required this.end, - required this.text, - this.subtitleAttributes, }); /// The number that this caption was assigned. @@ -54,6 +54,20 @@ class Caption { /// When in the given video should this [Caption] be dismissed. final Duration end; +} + +/// A representation of a text-based caption. +@immutable +class TextCaption extends Caption { + /// Creates a new [TextCaption] object. + const TextCaption({ + required super.number, + required super.start, + required super.end, + required this.text, + this.subtitleAttributes, + this.textStyle, + }); /// The actual text that should appear on screen to be read between [start] /// and [end]. @@ -62,9 +76,12 @@ class Caption { /// The subtitile attributes associated with this caption. final List? subtitleAttributes; - /// A no caption object. This is a caption with [start] and [end] durations of zero, + /// Specifies how the text in the closed caption should look. + final TextStyle? textStyle; + + /// A no text caption object. This is a caption with [start] and [end] durations of zero, /// and an empty [text] string. - static const Caption none = Caption( + static const TextCaption none = TextCaption( number: 0, start: Duration.zero, end: Duration.zero, @@ -72,29 +89,196 @@ class Caption { subtitleAttributes: [], ); + static Color? _toColor(int colorValue) { + String hexValue = colorValue.toRadixString(16); + if (hexValue.length < 6) { + hexValue = hexValue.padLeft(6, '0'); + } + if (hexValue.length == 6) { + hexValue = 'FF$hexValue'; + } + if (hexValue.length == 8) { + return Color(int.parse('0x$hexValue')); + } + return null; + } + + static FontWeight _toWeight(int weightValue) { + return weightValue == 0 ? FontWeight.normal : FontWeight.bold; + } + + static FontStyle _toStyle(int styleValue) { + return styleValue == 0 ? FontStyle.normal : FontStyle.italic; + } + + /// Specifies the text style according to subtitle attributes. + static TextStyle? specifyTextStyle( + List subtitleAttributes) { + TextStyle actualTextStyle = const TextStyle(); + for (final SubtitleAttribute attr in subtitleAttributes) { + switch (attr.attrType) { + case SubtitleAttrType.subAttrFontFamily: + actualTextStyle = + actualTextStyle.copyWith(fontFamily: attr.attrValue as String); + case SubtitleAttrType.subAttrFontSize: + final double fontSize = attr.attrValue as double; + if (fontSize < 1.0) { + const double getSysDefaultFontSize = 36.0; + actualTextStyle = actualTextStyle.copyWith( + fontSize: getSysDefaultFontSize * fontSize); + } else { + actualTextStyle = actualTextStyle.copyWith(fontSize: fontSize); + } + case SubtitleAttrType.subAttrFontWeight: + actualTextStyle = actualTextStyle.copyWith( + fontWeight: _toWeight(attr.attrValue as int)); + case SubtitleAttrType.subAttrFontStyle: + actualTextStyle = actualTextStyle.copyWith( + fontStyle: _toStyle(attr.attrValue as int)); + case SubtitleAttrType.subAttrFontColor: + if (actualTextStyle.foreground == null) { + actualTextStyle = actualTextStyle.copyWith( + color: _toColor(attr.attrValue as int)); + } + case SubtitleAttrType.subAttrFontBgColor: + if (actualTextStyle.background == null) { + actualTextStyle = actualTextStyle.copyWith( + backgroundColor: _toColor(attr.attrValue as int)); + } + case SubtitleAttrType.subAttrFontOpacity: + actualTextStyle = actualTextStyle.copyWith( + color: + actualTextStyle.color!.withOpacity(attr.attrValue as double)); + case SubtitleAttrType.subAttrFontBgOpacity: + actualTextStyle = actualTextStyle.copyWith( + backgroundColor: actualTextStyle.backgroundColor! + .withOpacity(attr.attrValue as double)); + case SubtitleAttrType.subAttrFontTextOutlineColor: + case SubtitleAttrType.subAttrFontTextOutlineThickness: + case SubtitleAttrType.subAttrFontTextOutlineBlurRadius: + // actualTextStyle = actualTextStyle.copyWith(shadows: [ + // const Shadow(color: Colors.green, offset: Offset(1, 1)) + // ]); + break; + case SubtitleAttrType.subAttrRegionXPos: + case SubtitleAttrType.subAttrRegionYPos: + case SubtitleAttrType.subAttrRegionWidth: + case SubtitleAttrType.subAttrRegionHeight: + case SubtitleAttrType.subAttrWindowXPadding: + case SubtitleAttrType.subAttrWindowYPadding: + case SubtitleAttrType.subAttrWindowLeftMargin: + case SubtitleAttrType.subAttrWindowRightMargin: + case SubtitleAttrType.subAttrWindowTopMargin: + case SubtitleAttrType.subAttrWindowBottomMargin: + case SubtitleAttrType.subAttrWindowBgColor: + case SubtitleAttrType.subAttrWindowOpacity: + case SubtitleAttrType.subAttrWindowShowBg: + case SubtitleAttrType.subAttrFontVerticalAlign: + case SubtitleAttrType.subAttrFontHorizontalAlign: + case SubtitleAttrType.subAttrRawSubtitle: + case SubtitleAttrType.subAttrWebvttCueLine: + case SubtitleAttrType.subAttrWebvttCueLineNum: + case SubtitleAttrType.subAttrWebvttCueLineAlign: + case SubtitleAttrType.subAttrWebvttCueAlign: + case SubtitleAttrType.subAttrWebvttCueSize: + case SubtitleAttrType.subAttrWebvttCuePosition: + case SubtitleAttrType.subAttrWebvttCuePositionAlign: + case SubtitleAttrType.subAttrWebvttCueVertical: + case SubtitleAttrType.subAttrTimestamp: + case SubtitleAttrType.subAttrExtsubInde: + case SubtitleAttrType.subAttrTypeNone: + break; + } + } + return actualTextStyle == const TextStyle() ? null : actualTextStyle; + } + @override String toString() { - return '${objectRuntimeType(this, 'Caption')}(' + return '${objectRuntimeType(this, 'TextCaption')}(' 'number: $number, ' 'start: $start, ' 'end: $end, ' 'text: $text, ' - 'subtitleAttributes: $subtitleAttributes)'; + 'subtitleAttributes: $subtitleAttributes, ' + 'textStyle: $textStyle)'; } @override bool operator ==(Object other) => identical(this, other) || - other is Caption && + other is TextCaption && runtimeType == other.runtimeType && number == other.number && start == other.start && end == other.end && text == other.text && - subtitleAttributes == other.subtitleAttributes; + listEquals(subtitleAttributes, other.subtitleAttributes) && + textStyle == other.textStyle; + + @override + int get hashCode => + Object.hash(number, start, end, text, subtitleAttributes, textStyle); +} + +/// A representation of a picture-based caption. +@immutable +class PictureCaption extends Caption { + /// Creates a new [PictureCaption] object. + const PictureCaption({ + required super.number, + required super.start, + required super.end, + this.picture, + this.pictureWidth, + this.pictureHeight, + }); + + /// The image data for the caption, typically in a format like PNG or JPEG. + final Uint8List? picture; + + /// Specifies the picture's width. + final double? pictureWidth; + + /// Specifies the picture's height. + final double? pictureHeight; + + /// A no picture caption object. This is a caption with [start] and [end] durations of zero, + /// and an empty [picture]. + static const PictureCaption none = PictureCaption( + number: 0, + start: Duration.zero, + end: Duration.zero, + pictureWidth: 0.0, + pictureHeight: 0.0, + ); + + @override + String toString() { + return '${objectRuntimeType(this, 'PictureCaption')}(' + 'number: $number, ' + 'start: $start, ' + 'end: $end, ' + 'picture: ${picture == null ? 'null' : '${picture?.length} bytes'}, ' + 'pictureWidth: $pictureWidth, ' + 'pictureHeight: $pictureHeight)'; + } + + @override + bool operator ==(Object other) => + identical(this, other) || + other is PictureCaption && + runtimeType == other.runtimeType && + number == other.number && + start == other.start && + end == other.end && + picture == other.picture && + pictureWidth == other.pictureWidth && + pictureHeight == other.pictureHeight; @override - int get hashCode => Object.hash(number, start, end, text, subtitleAttributes); + int get hashCode => + Object.hash(number, start, end, picture, pictureWidth, pictureHeight); } /// The different types of subtitle attributes that can be set on the player. diff --git a/packages/video_player_avplay/lib/src/sub_rip.dart b/packages/video_player_avplay/lib/src/sub_rip.dart index c9d8189a7..c8b35c0cd 100644 --- a/packages/video_player_avplay/lib/src/sub_rip.dart +++ b/packages/video_player_avplay/lib/src/sub_rip.dart @@ -21,13 +21,13 @@ class SubRipCaptionFile extends ClosedCaptionFile { final String fileContents; @override - List get captions => _captions; + List get textCaptions => _captions; - final List _captions; + final List _captions; } -List _parseCaptionsFromSubRipString(String file) { - final List captions = []; +List _parseCaptionsFromSubRipString(String file) { + final List captions = []; for (final List captionLines in _readSubRipFile(file)) { if (captionLines.length < 3) { break; @@ -40,7 +40,7 @@ List _parseCaptionsFromSubRipString(String file) { final String text = captionLines.sublist(2).join('\n'); - final Caption newCaption = Caption( + final TextCaption newCaption = TextCaption( number: captionNumber, start: captionRange.start, end: captionRange.end, diff --git a/packages/video_player_avplay/lib/src/video_player_tizen.dart b/packages/video_player_avplay/lib/src/video_player_tizen.dart index ec133cdef..63c5feadd 100644 --- a/packages/video_player_avplay/lib/src/video_player_tizen.dart +++ b/packages/video_player_avplay/lib/src/video_player_tizen.dart @@ -437,6 +437,9 @@ class VideoPlayerTizen extends VideoPlayerPlatform { return VideoEvent( eventType: VideoEventType.subtitleUpdate, text: map['text']! as String, + picture: map['picture'] as Uint8List?, + pictureWidth: map['pictureWidth'] as double?, + pictureHeight: map['pictureHeight'] as double?, subtitleAttributes: map['attributes']! as List, ); case 'isPlayingStateUpdate': diff --git a/packages/video_player_avplay/lib/src/web_vtt.dart b/packages/video_player_avplay/lib/src/web_vtt.dart index e885b0d16..fbcf81408 100644 --- a/packages/video_player_avplay/lib/src/web_vtt.dart +++ b/packages/video_player_avplay/lib/src/web_vtt.dart @@ -19,13 +19,13 @@ class WebVTTCaptionFile extends ClosedCaptionFile { : _captions = _parseCaptionsFromWebVTTString(fileContents); @override - List get captions => _captions; + List get textCaptions => _captions; - final List _captions; + final List _captions; } -List _parseCaptionsFromWebVTTString(String file) { - final List captions = []; +List _parseCaptionsFromWebVTTString(String file) { + final List captions = []; // Ignore metadata final Set metadata = {'HEADER', 'NOTE', 'REGION', 'WEBVTT'}; @@ -72,7 +72,7 @@ List _parseCaptionsFromWebVTTString(String file) { // https://github.com/flutter/flutter/issues/90007. final String textWithoutFormat = _extractTextFromHtml(text); - final Caption newCaption = Caption( + final TextCaption newCaption = TextCaption( number: captionNumber, start: captionRange.start, end: captionRange.end, diff --git a/packages/video_player_avplay/lib/video_player.dart b/packages/video_player_avplay/lib/video_player.dart index 9aa15ef99..3b7b4d06b 100644 --- a/packages/video_player_avplay/lib/video_player.dart +++ b/packages/video_player_avplay/lib/video_player.dart @@ -52,7 +52,8 @@ class VideoPlayerValue { required this.duration, this.size = Size.zero, this.position = Duration.zero, - this.caption = Caption.none, + this.textCaption = TextCaption.none, + this.pictureCaption = PictureCaption.none, this.captionOffset = Duration.zero, this.tracks = const [], this.buffered = 0, @@ -94,11 +95,17 @@ class VideoPlayerValue { /// The current playback position. final Duration position; - /// The [Caption] that should be displayed based on the current [position]. + /// The [TextCaption] that should be displayed based on the current [position]. /// - /// This field will never be null. If there is no caption for the current - /// [position], this will be a [Caption.none] object. - final Caption caption; + /// If there is no text caption for the current + /// [position], this will be a [TextCaption.none] object. + final TextCaption textCaption; + + /// The [PictureCaption] that should be displayed based on the current [position]. + /// + /// If there is no text caption for the current + /// [position], this will be a [PictureCaption.none] object. + final PictureCaption pictureCaption; /// The [Duration] that should be used to offset the current [position] to get the correct [Caption]. /// @@ -165,6 +172,9 @@ class VideoPlayerValue { /// Indicates whether or not the video has ADInfo. bool get hasAdInfo => adInfo != null; + /// Indicates whether or not the video has special subtitle text style. + bool get hasTextStyle => textCaption.textStyle != null; + /// Returns [size.width] / [size.height]. /// /// Will return `1.0` if: @@ -188,7 +198,8 @@ class VideoPlayerValue { DurationRange? duration, Size? size, Duration? position, - Caption? caption, + TextCaption? textCaption, + PictureCaption? pictureCaption, Duration? captionOffset, List? tracks, int? buffered, @@ -206,7 +217,8 @@ class VideoPlayerValue { duration: duration ?? this.duration, size: size ?? this.size, position: position ?? this.position, - caption: caption ?? this.caption, + textCaption: textCaption ?? this.textCaption, + pictureCaption: pictureCaption ?? this.pictureCaption, captionOffset: captionOffset ?? this.captionOffset, tracks: tracks ?? this.tracks, buffered: buffered ?? this.buffered, @@ -230,7 +242,8 @@ class VideoPlayerValue { 'duration: $duration, ' 'size: $size, ' 'position: $position, ' - 'caption: $caption, ' + 'textCaption: $textCaption, ' + 'pictureCapton: $pictureCaption, ' 'captionOffset: $captionOffset, ' 'tracks: $tracks, ' 'buffered: $buffered, ' @@ -253,7 +266,8 @@ class VideoPlayerValue { duration == other.duration && size == other.size && position == other.position && - caption == other.caption && + textCaption == other.textCaption && + pictureCaption == other.pictureCaption && captionOffset == other.captionOffset && listEquals(tracks, other.tracks) && buffered == other.buffered && @@ -272,7 +286,8 @@ class VideoPlayerValue { duration, size, position, - caption, + textCaption, + pictureCaption, captionOffset, tracks, buffered, @@ -603,18 +618,34 @@ class VideoPlayerController extends ValueNotifier { case VideoEventType.bufferingEnd: value = value.copyWith(isBuffering: false); case VideoEventType.subtitleUpdate: - final List subtitleAttributes = - SubtitleAttribute.fromEventSubtitleAttrList( - event.subtitleAttributes, - ); - final Caption caption = Caption( - number: 0, - start: value.position, - end: value.position + (event.duration?.end ?? Duration.zero), - text: event.text ?? '', - subtitleAttributes: subtitleAttributes, - ); - value = value.copyWith(caption: caption); + if (event.picture?.isNotEmpty ?? false) { + final PictureCaption pictureCaption = PictureCaption( + number: 0, + start: value.position, + end: value.position + (event.duration?.end ?? Duration.zero), + picture: event.picture, + pictureWidth: event.pictureWidth, + pictureHeight: event.pictureHeight, + ); + value = value.copyWith(pictureCaption: pictureCaption); + } else { + final List subtitleAttributes = + SubtitleAttribute.fromEventSubtitleAttrList( + event.subtitleAttributes, + ); + + final TextStyle? actualTextStyle = + TextCaption.specifyTextStyle(subtitleAttributes); + final TextCaption textCaption = TextCaption( + number: 0, + start: value.position, + end: value.position + (event.duration?.end ?? Duration.zero), + text: event.text ?? '', + subtitleAttributes: subtitleAttributes, + textStyle: actualTextStyle, + ); + value = value.copyWith(textCaption: textCaption); + } case VideoEventType.isPlayingStateUpdate: if (event.isPlaying ?? false) { value = value.copyWith( @@ -626,9 +657,8 @@ class VideoPlayerController extends ValueNotifier { value = value.copyWith(isPlaying: event.isPlaying); } case VideoEventType.adFromDash: - final AdInfoFromDash? adInfo = AdInfoFromDash.fromAdInfoMap( - event.adInfo, - ); + final AdInfoFromDash? adInfo = + AdInfoFromDash.fromAdInfoMap(event.adInfo); value = value.copyWith(adInfo: adInfo); case VideoEventType.unknown: break; @@ -637,7 +667,7 @@ class VideoPlayerController extends ValueNotifier { if (closedCaptionFile != null) { _closedCaptionFile ??= await closedCaptionFile; - value = value.copyWith(caption: _getCaptionAt(value.position)); + value = value.copyWith(textCaption: _getCaptionAt(value.position)); } if (drmConfigs?.licenseCallback != null) { @@ -1050,7 +1080,7 @@ class VideoPlayerController extends ValueNotifier { return false; } - if (formatHint == null || formatHint != VideoFormat.dash) { + if (formatHint != VideoFormat.dash) { throw Exception('updateDashToken() only support for dash format!'); } @@ -1112,7 +1142,7 @@ class VideoPlayerController extends ValueNotifier { void setCaptionOffset(Duration offset) { value = value.copyWith( captionOffset: offset, - caption: _getCaptionAt(value.position), + textCaption: _getCaptionAt(value.position), ); } @@ -1123,26 +1153,27 @@ class VideoPlayerController extends ValueNotifier { /// /// If no [closedCaptionFile] was specified, this will always return an empty /// [Caption]. - Caption _getCaptionAt(Duration position) { + TextCaption _getCaptionAt(Duration position) { if (_closedCaptionFile == null) { - return value.caption; + return value.textCaption; } final Duration delayedPosition = position + value.captionOffset; // TODO(johnsonmh): This would be more efficient as a binary search. - for (final Caption caption in _closedCaptionFile!.captions) { - if (caption.start <= delayedPosition && caption.end >= delayedPosition) { - return caption; + for (final TextCaption textCaption in _closedCaptionFile!.textCaptions) { + if (textCaption.start <= delayedPosition && + textCaption.end >= delayedPosition) { + return textCaption; } } - return Caption.none; + return TextCaption.none; } void _updatePosition(Duration position) { value = value.copyWith( position: position, - caption: _getCaptionAt(position), + textCaption: _getCaptionAt(position), isCompleted: position == value.duration.end, ); } @@ -1549,10 +1580,16 @@ class _VideoProgressIndicatorState extends State { /// ``` class ClosedCaption extends StatelessWidget { /// Creates a a new closed caption, designed to be used with - /// [VideoPlayerValue.caption]. + /// [VideoPlayerValue.textCaption]. /// /// If [text] is null or empty, nothing will be displayed. - const ClosedCaption({super.key, this.text, this.textStyle}); + const ClosedCaption( + {super.key, + this.text, + this.textStyle, + this.subtitleImage, + this.subtitleImageWidth, + this.subtitleImageHeight}); /// The text that will be shown in the closed caption, or null if no caption /// should be shown. @@ -1565,34 +1602,60 @@ class ClosedCaption extends StatelessWidget { /// font colored white. final TextStyle? textStyle; + /// The image that will be shown in the closed caption, or null. + final Uint8List? subtitleImage; + + /// The image's width. + final double? subtitleImageWidth; + + /// The image's height. + final double? subtitleImageHeight; + @override Widget build(BuildContext context) { - final String? text = this.text; - if (text == null || text.isEmpty) { - return const SizedBox.shrink(); - } - - final TextStyle effectiveTextStyle = textStyle ?? - DefaultTextStyle.of( - context, - ).style.copyWith(fontSize: 36.0, color: Colors.white); - - return Align( - alignment: Alignment.bottomCenter, - child: Padding( - padding: const EdgeInsets.only(bottom: 24.0), - child: DecoratedBox( - decoration: BoxDecoration( - color: const Color(0xB8000000), - borderRadius: BorderRadius.circular(2.0), - ), + if (subtitleImage?.isNotEmpty ?? false) { + final Image subtitleImage = Image.memory(this.subtitleImage!, + width: subtitleImageWidth, height: subtitleImageHeight, errorBuilder: + (BuildContext context, Object error, StackTrace? stackTrace) { + print('[ClosedCaption] Image.memory error: $error'); + print('[ClosedCaption] StackTrace: $stackTrace'); + + return const Text(''); + }); + return Align( + alignment: Alignment.bottomCenter, child: Padding( - padding: const EdgeInsets.symmetric(horizontal: 2.0), - child: Text(text, style: effectiveTextStyle), + padding: const EdgeInsets.only(bottom: 24.0), + child: subtitleImage, + )); + } else { + final String? text = this.text; + if (text == null || text.isEmpty) { + return const SizedBox.shrink(); + } + + final TextStyle effectiveTextStyle = textStyle ?? + DefaultTextStyle.of( + context, + ).style.copyWith(fontSize: 36.0, color: Colors.white); + + return Align( + alignment: Alignment.bottomCenter, + child: Padding( + padding: const EdgeInsets.only(bottom: 24.0), + child: DecoratedBox( + decoration: BoxDecoration( + color: const Color(0xB8000000), + borderRadius: BorderRadius.circular(2.0), + ), + child: Padding( + padding: const EdgeInsets.symmetric(horizontal: 2.0), + child: Text(text, style: effectiveTextStyle), + ), ), ), - ), - ); + ); + } } } diff --git a/packages/video_player_avplay/lib/video_player_platform_interface.dart b/packages/video_player_avplay/lib/video_player_platform_interface.dart index c55a51e17..5dd9a3f71 100644 --- a/packages/video_player_avplay/lib/video_player_platform_interface.dart +++ b/packages/video_player_avplay/lib/video_player_platform_interface.dart @@ -558,6 +558,9 @@ class VideoEvent { this.isPlaying, this.subtitleAttributes, this.adInfo, + this.picture, + this.pictureWidth, + this.pictureHeight, }); /// The type of the event. @@ -596,6 +599,21 @@ class VideoEvent { /// Only used if [eventType] is [VideoEventType.adFromDash]. final Map? adInfo; + /// Subtitle picture data of the video. + /// + /// Only used if [eventType] is [VideoEventType.subtitleUpdate]. + final Uint8List? picture; + + /// Subtitle picture width. + /// + /// Only used when picture is not null. + final double? pictureWidth; + + /// Subtitle picture height. + /// + /// Only used when picture is not null. + final double? pictureHeight; + @override bool operator ==(Object other) { return identical(this, other) || @@ -607,8 +625,11 @@ class VideoEvent { buffered == other.buffered && text == other.text && isPlaying == other.isPlaying && - subtitleAttributes == other.subtitleAttributes && - adInfo == other.adInfo; + listEquals(subtitleAttributes, other.subtitleAttributes) && + mapEquals(adInfo, other.adInfo) && + picture == other.picture && + pictureWidth == other.pictureWidth && + pictureHeight == other.pictureHeight; } @override @@ -620,7 +641,10 @@ class VideoEvent { text.hashCode ^ isPlaying.hashCode ^ subtitleAttributes.hashCode ^ - adInfo.hashCode; + adInfo.hashCode ^ + picture.hashCode ^ + pictureWidth.hashCode ^ + pictureHeight.hashCode; } /// Type of the event. diff --git a/packages/video_player_avplay/tizen/inc/stb_image_write.h b/packages/video_player_avplay/tizen/inc/stb_image_write.h new file mode 100755 index 000000000..7f68acbf4 --- /dev/null +++ b/packages/video_player_avplay/tizen/inc/stb_image_write.h @@ -0,0 +1,2019 @@ +/* stb_image_write - v1.16 - public domain - http://nothings.org/stb + writes out PNG/BMP/TGA/JPEG/HDR images to C stdio - Sean Barrett 2010-2015 + no warranty implied; use at your own risk + + Before #including, + + #define STB_IMAGE_WRITE_IMPLEMENTATION + + in the file that you want to have the implementation. + + Will probably not work correctly with strict-aliasing optimizations. + +ABOUT: + + This header file is a library for writing images to C stdio or a callback. + + The PNG output is not optimal; it is 20-50% larger than the file + written by a decent optimizing implementation; though providing a custom + zlib compress function (see STBIW_ZLIB_COMPRESS) can mitigate that. + This library is designed for source code compactness and simplicity, + not optimal image file size or run-time performance. + +BUILDING: + + You can #define STBIW_ASSERT(x) before the #include to avoid using assert.h. + You can #define STBIW_MALLOC(), STBIW_REALLOC(), and STBIW_FREE() to replace + malloc,realloc,free. + You can #define STBIW_MEMMOVE() to replace memmove() + You can #define STBIW_ZLIB_COMPRESS to use a custom zlib-style compress +function for PNG compression (instead of the builtin one), it must have the +following signature: unsigned char * my_compress(unsigned char *data, int +data_len, int *out_len, int quality); The returned data will be freed with +STBIW_FREE() (free() by default), so it must be heap allocated with +STBIW_MALLOC() (malloc() by default), + +UNICODE: + + If compiling for Windows and you wish to use Unicode filenames, compile + with + #define STBIW_WINDOWS_UTF8 + and pass utf8-encoded filenames. Call stbiw_convert_wchar_to_utf8 to convert + Windows wchar_t filenames to utf8. + +USAGE: + + There are five functions, one for each image file format: + + int stbi_write_png(char const *filename, int w, int h, int comp, const void +*data, int stride_in_bytes); int stbi_write_bmp(char const *filename, int w, int +h, int comp, const void *data); int stbi_write_tga(char const *filename, int w, +int h, int comp, const void *data); int stbi_write_jpg(char const *filename, int +w, int h, int comp, const void *data, int quality); int stbi_write_hdr(char +const *filename, int w, int h, int comp, const float *data); + + void stbi_flip_vertically_on_write(int flag); // flag is non-zero to flip +data vertically + + There are also five equivalent functions that use an arbitrary write +function. You are expected to open/close your file-equivalent before and after +calling these: + + int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, int +h, int comp, const void *data, int stride_in_bytes); int +stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, int h, int +comp, const void *data); int stbi_write_tga_to_func(stbi_write_func *func, void +*context, int w, int h, int comp, const void *data); int +stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, int h, int +comp, const float *data); int stbi_write_jpg_to_func(stbi_write_func *func, void +*context, int x, int y, int comp, const void *data, int quality); + + where the callback is: + void stbi_write_func(void *context, void *data, int size); + + You can configure it with these global variables: + int stbi_write_tga_with_rle; // defaults to true; set to 0 to +disable RLE int stbi_write_png_compression_level; // defaults to 8; set to +higher for more compression int stbi_write_force_png_filter; // defaults +to -1; set to 0..5 to force a filter mode + + + You can define STBI_WRITE_NO_STDIO to disable the file variant of these + functions, so the library will not use stdio.h at all. However, this will + also disable HDR writing, because it requires stdio for formatted output. + + Each function returns 0 on failure and non-0 on success. + + The functions create an image file defined by the parameters. The image + is a rectangle of pixels stored from left-to-right, top-to-bottom. + Each pixel contains 'comp' channels of data stored interleaved with 8-bits + per channel, in the following order: 1=Y, 2=YA, 3=RGB, 4=RGBA. (Y is + monochrome color.) The rectangle is 'w' pixels wide and 'h' pixels tall. + The *data pointer points to the first byte of the top-left-most pixel. + For PNG, "stride_in_bytes" is the distance in bytes from the first byte of + a row of pixels to the first byte of the next row of pixels. + + PNG creates output files with the same number of components as the input. + The BMP format expands Y to RGB in the file format and does not + output alpha. + + PNG supports writing rectangles of data even when the bytes storing rows of + data are not consecutive in memory (e.g. sub-rectangles of a larger image), + by supplying the stride between the beginning of adjacent rows. The other + formats do not. (Thus you cannot write a native-format BMP through the BMP + writer, both because it is in BGR order and because it may have padding + at the end of the line.) + + PNG allows you to set the deflate compression level by setting the global + variable 'stbi_write_png_compression_level' (it defaults to 8). + + HDR expects linear float data. Since the format is always 32-bit rgb(e) + data, alpha (if provided) is discarded, and for monochrome data it is + replicated across all three channels. + + TGA supports RLE or non-RLE compressed data. To use non-RLE-compressed + data, set the global variable 'stbi_write_tga_with_rle' to 0. + + JPEG does ignore alpha channels in input data; quality is between 1 and 100. + Higher quality looks better but results in a bigger image. + JPEG baseline (no JPEG progressive). + +CREDITS: + + + Sean Barrett - PNG/BMP/TGA + Baldur Karlsson - HDR + Jean-Sebastien Guay - TGA monochrome + Tim Kelsey - misc enhancements + Alan Hickman - TGA RLE + Emmanuel Julien - initial file IO callback implementation + Jon Olick - original jo_jpeg.cpp code + Daniel Gibson - integrate JPEG, allow external zlib + Aarni Koskela - allow choosing PNG filter + + bugfixes: + github:Chribba + Guillaume Chereau + github:jry2 + github:romigrou + Sergio Gonzalez + Jonas Karlsson + Filip Wasil + Thatcher Ulrich + github:poppolopoppo + Patrick Boettcher + github:xeekworx + Cap Petschulat + Simon Rodriguez + Ivan Tikhonov + github:ignotion + Adam Schackart + Andrew Kensler + +LICENSE + + See end of file for license information. + +*/ + +#ifndef INCLUDE_STB_IMAGE_WRITE_H +#define INCLUDE_STB_IMAGE_WRITE_H + +#include + +// if STB_IMAGE_WRITE_STATIC causes problems, try defining STBIWDEF to 'inline' +// or 'static inline' +#ifndef STBIWDEF +#ifdef STB_IMAGE_WRITE_STATIC +#define STBIWDEF static +#else +#ifdef __cplusplus +#define STBIWDEF extern "C" +#else +#define STBIWDEF extern +#endif +#endif +#endif + +#ifndef STB_IMAGE_WRITE_STATIC // C++ forbids static forward declarations +STBIWDEF int stbi_write_tga_with_rle; +STBIWDEF int stbi_write_png_compression_level; +STBIWDEF int stbi_write_force_png_filter; +#endif + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_png(char const *filename, int w, int h, int comp, + const void *data, int stride_in_bytes); +STBIWDEF int stbi_write_bmp(char const *filename, int w, int h, int comp, + const void *data); +STBIWDEF int stbi_write_tga(char const *filename, int w, int h, int comp, + const void *data); +STBIWDEF int stbi_write_hdr(char const *filename, int w, int h, int comp, + const float *data); +STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, + const void *data, int quality); + +#ifdef STBIW_WINDOWS_UTF8 +STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, + const wchar_t *input); +#endif +#endif + +typedef void stbi_write_func(void *context, void *data, int size); + +STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int w, + int h, int comp, const void *data, + int stride_in_bytes); +STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int w, + int h, int comp, const void *data); +STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int w, + int h, int comp, const void *data); +STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int w, + int h, int comp, const float *data); +STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const void *data, + int quality); + +STBIWDEF void stbi_flip_vertically_on_write(int flip_boolean); + +#endif // INCLUDE_STB_IMAGE_WRITE_H + +#ifdef STB_IMAGE_WRITE_IMPLEMENTATION + +#ifdef _WIN32 +#ifndef _CRT_SECURE_NO_WARNINGS +#define _CRT_SECURE_NO_WARNINGS +#endif +#ifndef _CRT_NONSTDC_NO_DEPRECATE +#define _CRT_NONSTDC_NO_DEPRECATE +#endif +#endif + +#ifndef STBI_WRITE_NO_STDIO +#include +#endif // STBI_WRITE_NO_STDIO + +#include +#include +#include +#include + +#if defined(STBIW_MALLOC) && defined(STBIW_FREE) && \ + (defined(STBIW_REALLOC) || defined(STBIW_REALLOC_SIZED)) +// ok +#elif !defined(STBIW_MALLOC) && !defined(STBIW_FREE) && \ + !defined(STBIW_REALLOC) && !defined(STBIW_REALLOC_SIZED) +// ok +#else +#error \ + "Must define all or none of STBIW_MALLOC, STBIW_FREE, and STBIW_REALLOC (or STBIW_REALLOC_SIZED)." +#endif + +#ifndef STBIW_MALLOC +#define STBIW_MALLOC(sz) malloc(sz) +#define STBIW_REALLOC(p, newsz) realloc(p, newsz) +#define STBIW_FREE(p) free(p) +#endif + +#ifndef STBIW_REALLOC_SIZED +#define STBIW_REALLOC_SIZED(p, oldsz, newsz) STBIW_REALLOC(p, newsz) +#endif + +#ifndef STBIW_MEMMOVE +#define STBIW_MEMMOVE(a, b, sz) memmove(a, b, sz) +#endif + +#ifndef STBIW_ASSERT +#include +#define STBIW_ASSERT(x) assert(x) +#endif + +#define STBIW_UCHAR(x) (unsigned char)((x)&0xff) + +#ifdef STB_IMAGE_WRITE_STATIC +static int stbi_write_png_compression_level = 8; +static int stbi_write_tga_with_rle = 1; +static int stbi_write_force_png_filter = -1; +#else +int stbi_write_png_compression_level = 8; +int stbi_write_tga_with_rle = 1; +int stbi_write_force_png_filter = -1; +#endif + +static int stbi__flip_vertically_on_write = 0; + +STBIWDEF void stbi_flip_vertically_on_write(int flag) { + stbi__flip_vertically_on_write = flag; +} + +typedef struct { + stbi_write_func *func; + void *context; + unsigned char buffer[64]; + int buf_used; +} stbi__write_context; + +// initialize a callback-based context +static void stbi__start_write_callbacks(stbi__write_context *s, + stbi_write_func *c, void *context) { + s->func = c; + s->context = context; +} + +#ifndef STBI_WRITE_NO_STDIO + +static void stbi__stdio_write(void *context, void *data, int size) { + fwrite(data, 1, size, (FILE *)context); +} + +#if defined(_WIN32) && defined(STBIW_WINDOWS_UTF8) +#ifdef __cplusplus +#define STBIW_EXTERN extern "C" +#else +#define STBIW_EXTERN extern +#endif +STBIW_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar( + unsigned int cp, unsigned long flags, const char *str, int cbmb, + wchar_t *widestr, int cchwide); +STBIW_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte( + unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, + char *str, int cbmb, const char *defchar, int *used_default); + +STBIWDEF int stbiw_convert_wchar_to_utf8(char *buffer, size_t bufferlen, + const wchar_t *input) { + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, + (int)bufferlen, NULL, NULL); +} +#endif + +static FILE *stbiw__fopen(char const *filename, char const *mode) { + FILE *f; +#if defined(_WIN32) && defined(STBIW_WINDOWS_UTF8) + wchar_t wMode[64]; + wchar_t wFilename[1024]; + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, + sizeof(wFilename) / sizeof(*wFilename))) + return 0; + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, + sizeof(wMode) / sizeof(*wMode))) + return 0; + +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) f = 0; +#else + f = _wfopen(wFilename, wMode); +#endif + +#elif defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) f = 0; +#else + f = fopen(filename, mode); +#endif + return f; +} + +static int stbi__start_write_file(stbi__write_context *s, + const char *filename) { + FILE *f = stbiw__fopen(filename, "wb"); + stbi__start_write_callbacks(s, stbi__stdio_write, (void *)f); + return f != NULL; +} + +static void stbi__end_write_file(stbi__write_context *s) { + fclose((FILE *)s->context); +} + +#endif // !STBI_WRITE_NO_STDIO + +typedef unsigned int stbiw_uint32; +typedef int stb_image_write_test[sizeof(stbiw_uint32) == 4 ? 1 : -1]; + +static void stbiw__writefv(stbi__write_context *s, const char *fmt, va_list v) { + while (*fmt) { + switch (*fmt++) { + case ' ': + break; + case '1': { + unsigned char x = STBIW_UCHAR(va_arg(v, int)); + s->func(s->context, &x, 1); + break; + } + case '2': { + int x = va_arg(v, int); + unsigned char b[2]; + b[0] = STBIW_UCHAR(x); + b[1] = STBIW_UCHAR(x >> 8); + s->func(s->context, b, 2); + break; + } + case '4': { + stbiw_uint32 x = va_arg(v, int); + unsigned char b[4]; + b[0] = STBIW_UCHAR(x); + b[1] = STBIW_UCHAR(x >> 8); + b[2] = STBIW_UCHAR(x >> 16); + b[3] = STBIW_UCHAR(x >> 24); + s->func(s->context, b, 4); + break; + } + default: + STBIW_ASSERT(0); + return; + } + } +} + +static void stbiw__writef(stbi__write_context *s, const char *fmt, ...) { + va_list v; + va_start(v, fmt); + stbiw__writefv(s, fmt, v); + va_end(v); +} + +static void stbiw__write_flush(stbi__write_context *s) { + if (s->buf_used) { + s->func(s->context, &s->buffer, s->buf_used); + s->buf_used = 0; + } +} + +static void stbiw__putc(stbi__write_context *s, unsigned char c) { + s->func(s->context, &c, 1); +} + +static void stbiw__write1(stbi__write_context *s, unsigned char a) { + if ((size_t)s->buf_used + 1 > sizeof(s->buffer)) stbiw__write_flush(s); + s->buffer[s->buf_used++] = a; +} + +static void stbiw__write3(stbi__write_context *s, unsigned char a, + unsigned char b, unsigned char c) { + int n; + if ((size_t)s->buf_used + 3 > sizeof(s->buffer)) stbiw__write_flush(s); + n = s->buf_used; + s->buf_used = n + 3; + s->buffer[n + 0] = a; + s->buffer[n + 1] = b; + s->buffer[n + 2] = c; +} + +static void stbiw__write_pixel(stbi__write_context *s, int rgb_dir, int comp, + int write_alpha, int expand_mono, + unsigned char *d) { + unsigned char bg[3] = {255, 0, 255}, px[3]; + int k; + + if (write_alpha < 0) stbiw__write1(s, d[comp - 1]); + + switch (comp) { + case 2: // 2 pixels = mono + alpha, alpha is written separately, so same as + // 1-channel case + case 1: + if (expand_mono) + stbiw__write3(s, d[0], d[0], d[0]); // monochrome bmp + else + stbiw__write1(s, d[0]); // monochrome TGA + break; + case 4: + if (!write_alpha) { + // composite against pink background + for (k = 0; k < 3; ++k) px[k] = bg[k] + ((d[k] - bg[k]) * d[3]) / 255; + stbiw__write3(s, px[1 - rgb_dir], px[1], px[1 + rgb_dir]); + break; + } + /* FALLTHROUGH */ + case 3: + stbiw__write3(s, d[1 - rgb_dir], d[1], d[1 + rgb_dir]); + break; + } + if (write_alpha > 0) stbiw__write1(s, d[comp - 1]); +} + +static void stbiw__write_pixels(stbi__write_context *s, int rgb_dir, int vdir, + int x, int y, int comp, void *data, + int write_alpha, int scanline_pad, + int expand_mono) { + stbiw_uint32 zero = 0; + int i, j, j_end; + + if (y <= 0) return; + + if (stbi__flip_vertically_on_write) vdir *= -1; + + if (vdir < 0) { + j_end = -1; + j = y - 1; + } else { + j_end = y; + j = 0; + } + + for (; j != j_end; j += vdir) { + for (i = 0; i < x; ++i) { + unsigned char *d = (unsigned char *)data + (j * x + i) * comp; + stbiw__write_pixel(s, rgb_dir, comp, write_alpha, expand_mono, d); + } + stbiw__write_flush(s); + s->func(s->context, &zero, scanline_pad); + } +} + +static int stbiw__outfile(stbi__write_context *s, int rgb_dir, int vdir, int x, + int y, int comp, int expand_mono, void *data, + int alpha, int pad, const char *fmt, ...) { + if (y < 0 || x < 0) { + return 0; + } else { + va_list v; + va_start(v, fmt); + stbiw__writefv(s, fmt, v); + va_end(v); + stbiw__write_pixels(s, rgb_dir, vdir, x, y, comp, data, alpha, pad, + expand_mono); + return 1; + } +} + +static int stbi_write_bmp_core(stbi__write_context *s, int x, int y, int comp, + const void *data) { + if (comp != 4) { + // write RGB bitmap + int pad = (-x * 3) & 3; + return stbiw__outfile(s, -1, -1, x, y, comp, 1, (void *)data, 0, pad, + "11 4 22 4" + "4 44 22 444444", + 'B', 'M', 14 + 40 + (x * 3 + pad) * y, 0, 0, + 14 + 40, // file header + 40, x, y, 1, 24, 0, 0, 0, 0, 0, 0); // bitmap header + } else { + // RGBA bitmaps need a v4 header + // use BI_BITFIELDS mode with 32bpp and alpha mask + // (straight BI_RGB with alpha mask doesn't work in most readers) + return stbiw__outfile( + s, -1, -1, x, y, comp, 1, (void *)data, 1, 0, + "11 4 22 4" + "4 44 22 444444 4444 4 444 444 444 444", + 'B', 'M', 14 + 108 + x * y * 4, 0, 0, 14 + 108, // file header + 108, x, y, 1, 32, 3, 0, 0, 0, 0, 0, 0xff0000, 0xff00, 0xff, 0xff000000u, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); // bitmap V4 header + } +} + +STBIWDEF int stbi_write_bmp_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const void *data) { + stbi__write_context s = {0}; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_bmp_core(&s, x, y, comp, data); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_bmp(char const *filename, int x, int y, int comp, + const void *data) { + stbi__write_context s = {0}; + if (stbi__start_write_file(&s, filename)) { + int r = stbi_write_bmp_core(&s, x, y, comp, data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif //! STBI_WRITE_NO_STDIO + +static int stbi_write_tga_core(stbi__write_context *s, int x, int y, int comp, + void *data) { + int has_alpha = (comp == 2 || comp == 4); + int colorbytes = has_alpha ? comp - 1 : comp; + int format = + colorbytes < 2 + ? 3 + : 2; // 3 color channels (RGB/RGBA) = 2, 1 color channel (Y/YA) = 3 + + if (y < 0 || x < 0) return 0; + + if (!stbi_write_tga_with_rle) { + return stbiw__outfile(s, -1, -1, x, y, comp, 0, (void *)data, has_alpha, 0, + "111 221 2222 11", 0, 0, format, 0, 0, 0, 0, 0, x, y, + (colorbytes + has_alpha) * 8, has_alpha * 8); + } else { + int i, j, k; + int jend, jdir; + + stbiw__writef(s, "111 221 2222 11", 0, 0, format + 8, 0, 0, 0, 0, 0, x, y, + (colorbytes + has_alpha) * 8, has_alpha * 8); + + if (stbi__flip_vertically_on_write) { + j = 0; + jend = y; + jdir = 1; + } else { + j = y - 1; + jend = -1; + jdir = -1; + } + for (; j != jend; j += jdir) { + unsigned char *row = (unsigned char *)data + j * x * comp; + int len; + + for (i = 0; i < x; i += len) { + unsigned char *begin = row + i * comp; + int diff = 1; + len = 1; + + if (i < x - 1) { + ++len; + diff = memcmp(begin, row + (i + 1) * comp, comp); + if (diff) { + const unsigned char *prev = begin; + for (k = i + 2; k < x && len < 128; ++k) { + if (memcmp(prev, row + k * comp, comp)) { + prev += comp; + ++len; + } else { + --len; + break; + } + } + } else { + for (k = i + 2; k < x && len < 128; ++k) { + if (!memcmp(begin, row + k * comp, comp)) { + ++len; + } else { + break; + } + } + } + } + + if (diff) { + unsigned char header = STBIW_UCHAR(len - 1); + stbiw__write1(s, header); + for (k = 0; k < len; ++k) { + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin + k * comp); + } + } else { + unsigned char header = STBIW_UCHAR(len - 129); + stbiw__write1(s, header); + stbiw__write_pixel(s, -1, comp, has_alpha, 0, begin); + } + } + } + stbiw__write_flush(s); + } + return 1; +} + +STBIWDEF int stbi_write_tga_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const void *data) { + stbi__write_context s = {0}; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_tga_core(&s, x, y, comp, (void *)data); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_tga(char const *filename, int x, int y, int comp, + const void *data) { + stbi__write_context s = {0}; + if (stbi__start_write_file(&s, filename)) { + int r = stbi_write_tga_core(&s, x, y, comp, (void *)data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR writer +// by Baldur Karlsson + +#define stbiw__max(a, b) ((a) > (b) ? (a) : (b)) + +#ifndef STBI_WRITE_NO_STDIO + +static void stbiw__linear_to_rgbe(unsigned char *rgbe, float *linear) { + int exponent; + float maxcomp = stbiw__max(linear[0], stbiw__max(linear[1], linear[2])); + + if (maxcomp < 1e-32f) { + rgbe[0] = rgbe[1] = rgbe[2] = rgbe[3] = 0; + } else { + float normalize = (float)frexp(maxcomp, &exponent) * 256.0f / maxcomp; + + rgbe[0] = (unsigned char)(linear[0] * normalize); + rgbe[1] = (unsigned char)(linear[1] * normalize); + rgbe[2] = (unsigned char)(linear[2] * normalize); + rgbe[3] = (unsigned char)(exponent + 128); + } +} + +static void stbiw__write_run_data(stbi__write_context *s, int length, + unsigned char databyte) { + unsigned char lengthbyte = STBIW_UCHAR(length + 128); + STBIW_ASSERT(length + 128 <= 255); + s->func(s->context, &lengthbyte, 1); + s->func(s->context, &databyte, 1); +} + +static void stbiw__write_dump_data(stbi__write_context *s, int length, + unsigned char *data) { + unsigned char lengthbyte = STBIW_UCHAR(length); + STBIW_ASSERT( + length <= + 128); // inconsistent with spec but consistent with official code + s->func(s->context, &lengthbyte, 1); + s->func(s->context, data, length); +} + +static void stbiw__write_hdr_scanline(stbi__write_context *s, int width, + int ncomp, unsigned char *scratch, + float *scanline) { + unsigned char scanlineheader[4] = {2, 2, 0, 0}; + unsigned char rgbe[4]; + float linear[3]; + int x; + + scanlineheader[2] = (width & 0xff00) >> 8; + scanlineheader[3] = (width & 0x00ff); + + /* skip RLE for images too small or large */ + if (width < 8 || width >= 32768) { + for (x = 0; x < width; x++) { + switch (ncomp) { + case 4: /* fallthrough */ + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + stbiw__linear_to_rgbe(rgbe, linear); + s->func(s->context, rgbe, 4); + } + } else { + int c, r; + /* encode into scratch buffer */ + for (x = 0; x < width; x++) { + switch (ncomp) { + case 4: /* fallthrough */ + case 3: + linear[2] = scanline[x * ncomp + 2]; + linear[1] = scanline[x * ncomp + 1]; + linear[0] = scanline[x * ncomp + 0]; + break; + default: + linear[0] = linear[1] = linear[2] = scanline[x * ncomp + 0]; + break; + } + stbiw__linear_to_rgbe(rgbe, linear); + scratch[x + width * 0] = rgbe[0]; + scratch[x + width * 1] = rgbe[1]; + scratch[x + width * 2] = rgbe[2]; + scratch[x + width * 3] = rgbe[3]; + } + + s->func(s->context, scanlineheader, 4); + + /* RLE each component separately */ + for (c = 0; c < 4; c++) { + unsigned char *comp = &scratch[width * c]; + + x = 0; + while (x < width) { + // find first run + r = x; + while (r + 2 < width) { + if (comp[r] == comp[r + 1] && comp[r] == comp[r + 2]) break; + ++r; + } + if (r + 2 >= width) r = width; + // dump up to first run + while (x < r) { + int len = r - x; + if (len > 128) len = 128; + stbiw__write_dump_data(s, len, &comp[x]); + x += len; + } + // if there's a run, output it + if (r + 2 < width) { // same test as what we break out of in search + // loop, so only true if we break'd + // find next byte after run + while (r < width && comp[r] == comp[x]) ++r; + // output run up to r + while (x < r) { + int len = r - x; + if (len > 127) len = 127; + stbiw__write_run_data(s, len, comp[x]); + x += len; + } + } + } + } + } +} + +static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, + float *data) { + if (y <= 0 || x <= 0 || data == NULL) + return 0; + else { + // Each component is stored separately. Allocate scratch space for full + // output scanline. + unsigned char *scratch = (unsigned char *)STBIW_MALLOC(x * 4); + int i, len; + char buffer[128]; + char header[] = + "#?RADIANCE\n# Written by stb_image_write.h\nFORMAT=32-bit_rle_rgbe\n"; + s->func(s->context, header, sizeof(header) - 1); + +#ifdef __STDC_LIB_EXT1__ + len = + sprintf_s(buffer, sizeof(buffer), + "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x); +#else + len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", + y, x); +#endif + s->func(s->context, buffer, len); + + for (i = 0; i < y; i++) + stbiw__write_hdr_scanline( + s, x, comp, scratch, + data + comp * x * (stbi__flip_vertically_on_write ? y - 1 - i : i)); + STBIW_FREE(scratch); + return 1; + } +} + +STBIWDEF int stbi_write_hdr_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const float *data) { + stbi__write_context s = {0}; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_hdr_core(&s, x, y, comp, (float *)data); +} + +STBIWDEF int stbi_write_hdr(char const *filename, int x, int y, int comp, + const float *data) { + stbi__write_context s = {0}; + if (stbi__start_write_file(&s, filename)) { + int r = stbi_write_hdr_core(&s, x, y, comp, (float *)data); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif // STBI_WRITE_NO_STDIO + +////////////////////////////////////////////////////////////////////////////// +// +// PNG writer +// + +#ifndef STBIW_ZLIB_COMPRESS +// stretchy buffer; stbiw__sbpush() == vector<>::push_back() -- stbiw__sbcount() +// == vector<>::size() +#define stbiw__sbraw(a) ((int *)(void *)(a)-2) +#define stbiw__sbm(a) stbiw__sbraw(a)[0] +#define stbiw__sbn(a) stbiw__sbraw(a)[1] + +#define stbiw__sbneedgrow(a, n) ((a) == 0 || stbiw__sbn(a) + n >= stbiw__sbm(a)) +#define stbiw__sbmaybegrow(a, n) \ + (stbiw__sbneedgrow(a, (n)) ? stbiw__sbgrow(a, n) : 0) +#define stbiw__sbgrow(a, n) stbiw__sbgrowf((void **)&(a), (n), sizeof(*(a))) + +#define stbiw__sbpush(a, v) \ + (stbiw__sbmaybegrow(a, 1), (a)[stbiw__sbn(a)++] = (v)) +#define stbiw__sbcount(a) ((a) ? stbiw__sbn(a) : 0) +#define stbiw__sbfree(a) ((a) ? STBIW_FREE(stbiw__sbraw(a)), 0 : 0) + +static void *stbiw__sbgrowf(void **arr, int increment, int itemsize) { + int m = *arr ? 2 * stbiw__sbm(*arr) + increment : increment + 1; + void *p = STBIW_REALLOC_SIZED( + *arr ? stbiw__sbraw(*arr) : 0, + *arr ? (stbiw__sbm(*arr) * itemsize + sizeof(int) * 2) : 0, + itemsize * m + sizeof(int) * 2); + STBIW_ASSERT(p); + if (p) { + if (!*arr) ((int *)p)[1] = 0; + *arr = (void *)((int *)p + 2); + stbiw__sbm(*arr) = m; + } + return *arr; +} + +static unsigned char *stbiw__zlib_flushf(unsigned char *data, + unsigned int *bitbuffer, + int *bitcount) { + while (*bitcount >= 8) { + stbiw__sbpush(data, STBIW_UCHAR(*bitbuffer)); + *bitbuffer >>= 8; + *bitcount -= 8; + } + return data; +} + +static int stbiw__zlib_bitrev(int code, int codebits) { + int res = 0; + while (codebits--) { + res = (res << 1) | (code & 1); + code >>= 1; + } + return res; +} + +static unsigned int stbiw__zlib_countm(unsigned char *a, unsigned char *b, + int limit) { + int i; + for (i = 0; i < limit && i < 258; ++i) + if (a[i] != b[i]) break; + return i; +} + +static unsigned int stbiw__zhash(unsigned char *data) { + stbiw_uint32 hash = data[0] + (data[1] << 8) + (data[2] << 16); + hash ^= hash << 3; + hash += hash >> 5; + hash ^= hash << 4; + hash += hash >> 17; + hash ^= hash << 25; + hash += hash >> 6; + return hash; +} + +#define stbiw__zlib_flush() (out = stbiw__zlib_flushf(out, &bitbuf, &bitcount)) +#define stbiw__zlib_add(code, codebits) \ + (bitbuf |= (code) << bitcount, bitcount += (codebits), stbiw__zlib_flush()) +#define stbiw__zlib_huffa(b, c) stbiw__zlib_add(stbiw__zlib_bitrev(b, c), c) +// default huffman tables +#define stbiw__zlib_huff1(n) stbiw__zlib_huffa(0x30 + (n), 8) +#define stbiw__zlib_huff2(n) stbiw__zlib_huffa(0x190 + (n)-144, 9) +#define stbiw__zlib_huff3(n) stbiw__zlib_huffa(0 + (n)-256, 7) +#define stbiw__zlib_huff4(n) stbiw__zlib_huffa(0xc0 + (n)-280, 8) +#define stbiw__zlib_huff(n) \ + ((n) <= 143 ? stbiw__zlib_huff1(n) \ + : (n) <= 255 ? stbiw__zlib_huff2(n) \ + : (n) <= 279 ? stbiw__zlib_huff3(n) \ + : stbiw__zlib_huff4(n)) +#define stbiw__zlib_huffb(n) \ + ((n) <= 143 ? stbiw__zlib_huff1(n) : stbiw__zlib_huff2(n)) + +#define stbiw__ZHASH 16384 + +#endif // STBIW_ZLIB_COMPRESS + +STBIWDEF unsigned char *stbi_zlib_compress(unsigned char *data, int data_len, + int *out_len, int quality) { +#ifdef STBIW_ZLIB_COMPRESS + // user provided a zlib compress implementation, use that + return STBIW_ZLIB_COMPRESS(data, data_len, out_len, quality); +#else // use builtin + static unsigned short lengthc[] = { + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, + 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 259}; + static unsigned char lengtheb[] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, + 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, + 4, 4, 4, 4, 5, 5, 5, 5, 0}; + static unsigned short distc[] = { + 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, + 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, + 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 32768}; + static unsigned char disteb[] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, + 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, + 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + unsigned int bitbuf = 0; + int i, j, bitcount = 0; + unsigned char *out = NULL; + unsigned char ***hash_table = + (unsigned char ***)STBIW_MALLOC(stbiw__ZHASH * sizeof(unsigned char **)); + if (hash_table == NULL) return NULL; + if (quality < 5) quality = 5; + + stbiw__sbpush(out, 0x78); // DEFLATE 32K window + stbiw__sbpush(out, 0x5e); // FLEVEL = 1 + stbiw__zlib_add(1, 1); // BFINAL = 1 + stbiw__zlib_add(1, 2); // BTYPE = 1 -- fixed huffman + + for (i = 0; i < stbiw__ZHASH; ++i) hash_table[i] = NULL; + + i = 0; + while (i < data_len - 3) { + // hash next 3 bytes of data to be compressed + int h = stbiw__zhash(data + i) & (stbiw__ZHASH - 1), best = 3; + unsigned char *bestloc = 0; + unsigned char **hlist = hash_table[h]; + int n = stbiw__sbcount(hlist); + for (j = 0; j < n; ++j) { + if (hlist[j] - data > i - 32768) { // if entry lies within window + int d = stbiw__zlib_countm(hlist[j], data + i, data_len - i); + if (d >= best) { + best = d; + bestloc = hlist[j]; + } + } + } + // when hash table entry is too long, delete half the entries + if (hash_table[h] && stbiw__sbn(hash_table[h]) == 2 * quality) { + STBIW_MEMMOVE(hash_table[h], hash_table[h] + quality, + sizeof(hash_table[h][0]) * quality); + stbiw__sbn(hash_table[h]) = quality; + } + stbiw__sbpush(hash_table[h], data + i); + + if (bestloc) { + // "lazy matching" - check match at *next* byte, and if it's better, do + // cur byte as literal + h = stbiw__zhash(data + i + 1) & (stbiw__ZHASH - 1); + hlist = hash_table[h]; + n = stbiw__sbcount(hlist); + for (j = 0; j < n; ++j) { + if (hlist[j] - data > i - 32767) { + int e = stbiw__zlib_countm(hlist[j], data + i + 1, data_len - i - 1); + if (e > best) { // if next match is better, bail on current match + bestloc = NULL; + break; + } + } + } + } + + if (bestloc) { + int d = (int)(data + i - bestloc); // distance back + STBIW_ASSERT(d <= 32767 && best <= 258); + for (j = 0; best > lengthc[j + 1] - 1; ++j) + ; + stbiw__zlib_huff(j + 257); + if (lengtheb[j]) stbiw__zlib_add(best - lengthc[j], lengtheb[j]); + for (j = 0; d > distc[j + 1] - 1; ++j) + ; + stbiw__zlib_add(stbiw__zlib_bitrev(j, 5), 5); + if (disteb[j]) stbiw__zlib_add(d - distc[j], disteb[j]); + i += best; + } else { + stbiw__zlib_huffb(data[i]); + ++i; + } + } + // write out final bytes + for (; i < data_len; ++i) stbiw__zlib_huffb(data[i]); + stbiw__zlib_huff(256); // end of block + // pad with 0 bits to byte boundary + while (bitcount) stbiw__zlib_add(0, 1); + + for (i = 0; i < stbiw__ZHASH; ++i) (void)stbiw__sbfree(hash_table[i]); + STBIW_FREE(hash_table); + + // store uncompressed instead if compression was worse + if (stbiw__sbn(out) > data_len + 2 + ((data_len + 32766) / 32767) * 5) { + stbiw__sbn(out) = 2; // truncate to DEFLATE 32K window and FLEVEL = 1 + for (j = 0; j < data_len;) { + int blocklen = data_len - j; + if (blocklen > 32767) blocklen = 32767; + stbiw__sbpush( + out, + data_len - j == blocklen); // BFINAL = ?, BTYPE = 0 -- no compression + stbiw__sbpush(out, STBIW_UCHAR(blocklen)); // LEN + stbiw__sbpush(out, STBIW_UCHAR(blocklen >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(~blocklen)); // NLEN + stbiw__sbpush(out, STBIW_UCHAR(~blocklen >> 8)); + memcpy(out + stbiw__sbn(out), data + j, blocklen); + stbiw__sbn(out) += blocklen; + j += blocklen; + } + } + + { + // compute adler32 on input + unsigned int s1 = 1, s2 = 0; + int blocklen = (int)(data_len % 5552); + j = 0; + while (j < data_len) { + for (i = 0; i < blocklen; ++i) { + s1 += data[j + i]; + s2 += s1; + } + s1 %= 65521; + s2 %= 65521; + j += blocklen; + blocklen = 5552; + } + stbiw__sbpush(out, STBIW_UCHAR(s2 >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(s2)); + stbiw__sbpush(out, STBIW_UCHAR(s1 >> 8)); + stbiw__sbpush(out, STBIW_UCHAR(s1)); + } + *out_len = stbiw__sbn(out); + // make returned pointer freeable + STBIW_MEMMOVE(stbiw__sbraw(out), out, *out_len); + return (unsigned char *)stbiw__sbraw(out); +#endif // STBIW_ZLIB_COMPRESS +} + +static unsigned int stbiw__crc32(unsigned char *buffer, int len) { +#ifdef STBIW_CRC32 + return STBIW_CRC32(buffer, len); +#else + static unsigned int crc_table[256] = { + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, + 0xE963A535, 0x9E6495A3, 0x0eDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, + 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, + 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, + 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, + 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, + 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, + 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, + 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, + 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, + 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, + 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, + 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, + 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, + 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, + 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, + 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, + 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, + 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, + 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, + 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, + 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, + 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, + 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, + 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, + 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, + 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, + 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, + 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, + 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, + 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, + 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, + 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D}; + + unsigned int crc = ~0u; + int i; + for (i = 0; i < len; ++i) + crc = (crc >> 8) ^ crc_table[buffer[i] ^ (crc & 0xff)]; + return ~crc; +#endif +} + +#define stbiw__wpng4(o, a, b, c, d) \ + ((o)[0] = STBIW_UCHAR(a), (o)[1] = STBIW_UCHAR(b), (o)[2] = STBIW_UCHAR(c), \ + (o)[3] = STBIW_UCHAR(d), (o) += 4) +#define stbiw__wp32(data, v) \ + stbiw__wpng4(data, (v) >> 24, (v) >> 16, (v) >> 8, (v)); +#define stbiw__wptag(data, s) stbiw__wpng4(data, s[0], s[1], s[2], s[3]) + +static void stbiw__wpcrc(unsigned char **data, int len) { + unsigned int crc = stbiw__crc32(*data - len - 4, len + 4); + stbiw__wp32(*data, crc); +} + +static unsigned char stbiw__paeth(int a, int b, int c) { + int p = a + b - c, pa = abs(p - a), pb = abs(p - b), pc = abs(p - c); + if (pa <= pb && pa <= pc) return STBIW_UCHAR(a); + if (pb <= pc) return STBIW_UCHAR(b); + return STBIW_UCHAR(c); +} + +// @OPTIMIZE: provide an option that always forces left-predict or paeth predict +static void stbiw__encode_png_line(unsigned char *pixels, int stride_bytes, + int width, int height, int y, int n, + int filter_type, signed char *line_buffer) { + static int mapping[] = {0, 1, 2, 3, 4}; + static int firstmap[] = {0, 1, 0, 5, 6}; + int *mymap = (y != 0) ? mapping : firstmap; + int i; + int type = mymap[filter_type]; + unsigned char *z = + pixels + + stride_bytes * (stbi__flip_vertically_on_write ? height - 1 - y : y); + int signed_stride = + stbi__flip_vertically_on_write ? -stride_bytes : stride_bytes; + + if (type == 0) { + memcpy(line_buffer, z, width * n); + return; + } + + // first loop isn't optimized since it's just one pixel + for (i = 0; i < n; ++i) { + switch (type) { + case 1: + line_buffer[i] = z[i]; + break; + case 2: + line_buffer[i] = z[i] - z[i - signed_stride]; + break; + case 3: + line_buffer[i] = z[i] - (z[i - signed_stride] >> 1); + break; + case 4: + line_buffer[i] = + (signed char)(z[i] - stbiw__paeth(0, z[i - signed_stride], 0)); + break; + case 5: + line_buffer[i] = z[i]; + break; + case 6: + line_buffer[i] = z[i]; + break; + } + } + switch (type) { + case 1: + for (i = n; i < width * n; ++i) line_buffer[i] = z[i] - z[i - n]; + break; + case 2: + for (i = n; i < width * n; ++i) + line_buffer[i] = z[i] - z[i - signed_stride]; + break; + case 3: + for (i = n; i < width * n; ++i) + line_buffer[i] = z[i] - ((z[i - n] + z[i - signed_stride]) >> 1); + break; + case 4: + for (i = n; i < width * n; ++i) + line_buffer[i] = z[i] - stbiw__paeth(z[i - n], z[i - signed_stride], + z[i - signed_stride - n]); + break; + case 5: + for (i = n; i < width * n; ++i) line_buffer[i] = z[i] - (z[i - n] >> 1); + break; + case 6: + for (i = n; i < width * n; ++i) + line_buffer[i] = z[i] - stbiw__paeth(z[i - n], 0, 0); + break; + } +} + +STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, + int stride_bytes, int x, int y, + int n, int *out_len) { + int force_filter = stbi_write_force_png_filter; + int ctype[5] = {-1, 0, 4, 2, 6}; + unsigned char sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; + unsigned char *out, *o, *filt, *zlib; + signed char *line_buffer; + int j, zlen; + + if (stride_bytes == 0) stride_bytes = x * n; + + if (force_filter >= 5) { + force_filter = -1; + } + + filt = (unsigned char *)STBIW_MALLOC((x * n + 1) * y); + if (!filt) return 0; + line_buffer = (signed char *)STBIW_MALLOC(x * n); + if (!line_buffer) { + STBIW_FREE(filt); + return 0; + } + for (j = 0; j < y; ++j) { + int filter_type; + if (force_filter > -1) { + filter_type = force_filter; + stbiw__encode_png_line((unsigned char *)(pixels), stride_bytes, x, y, j, + n, force_filter, line_buffer); + } else { // Estimate the best filter by running through all of them: + int best_filter = 0, best_filter_val = 0x7fffffff, est, i; + for (filter_type = 0; filter_type < 5; filter_type++) { + stbiw__encode_png_line((unsigned char *)(pixels), stride_bytes, x, y, j, + n, filter_type, line_buffer); + + // Estimate the entropy of the line using this filter; the less, the + // better. + est = 0; + for (i = 0; i < x * n; ++i) { + est += abs((signed char)line_buffer[i]); + } + if (est < best_filter_val) { + best_filter_val = est; + best_filter = filter_type; + } + } + if (filter_type != best_filter) { // If the last iteration already got us + // the best filter, don't redo it + stbiw__encode_png_line((unsigned char *)(pixels), stride_bytes, x, y, j, + n, best_filter, line_buffer); + filter_type = best_filter; + } + } + // when we get here, filter_type contains the filter type, and line_buffer + // contains the data + filt[j * (x * n + 1)] = (unsigned char)filter_type; + STBIW_MEMMOVE(filt + j * (x * n + 1) + 1, line_buffer, x * n); + } + STBIW_FREE(line_buffer); + zlib = stbi_zlib_compress(filt, y * (x * n + 1), &zlen, + stbi_write_png_compression_level); + STBIW_FREE(filt); + if (!zlib) return 0; + + // each tag requires 12 bytes of overhead + out = (unsigned char *)STBIW_MALLOC(8 + 12 + 13 + 12 + zlen + 12); + if (!out) return 0; + *out_len = 8 + 12 + 13 + 12 + zlen + 12; + + o = out; + STBIW_MEMMOVE(o, sig, 8); + o += 8; + stbiw__wp32(o, 13); // header length + stbiw__wptag(o, "IHDR"); + stbiw__wp32(o, x); + stbiw__wp32(o, y); + *o++ = 8; + *o++ = STBIW_UCHAR(ctype[n]); + *o++ = 0; + *o++ = 0; + *o++ = 0; + stbiw__wpcrc(&o, 13); + + stbiw__wp32(o, zlen); + stbiw__wptag(o, "IDAT"); + STBIW_MEMMOVE(o, zlib, zlen); + o += zlen; + STBIW_FREE(zlib); + stbiw__wpcrc(&o, zlen); + + stbiw__wp32(o, 0); + stbiw__wptag(o, "IEND"); + stbiw__wpcrc(&o, 0); + + STBIW_ASSERT(o == out + *out_len); + + return out; +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_png(char const *filename, int x, int y, int comp, + const void *data, int stride_bytes) { + FILE *f; + int len; + unsigned char *png = stbi_write_png_to_mem((const unsigned char *)data, + stride_bytes, x, y, comp, &len); + if (png == NULL) return 0; + + f = stbiw__fopen(filename, "wb"); + if (!f) { + STBIW_FREE(png); + return 0; + } + fwrite(png, 1, len, f); + fclose(f); + STBIW_FREE(png); + return 1; +} +#endif + +STBIWDEF int stbi_write_png_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const void *data, + int stride_bytes) { + int len; + unsigned char *png = stbi_write_png_to_mem((const unsigned char *)data, + stride_bytes, x, y, comp, &len); + if (png == NULL) return 0; + func(context, png, len); + STBIW_FREE(png); + return 1; +} + +/* *************************************************************************** + * + * JPEG writer + * + * This is based on Jon Olick's jo_jpeg.cpp: + * public domain Simple, Minimalistic JPEG writer - + * http://www.jonolick.com/code.html + */ + +static const unsigned char stbiw__jpg_ZigZag[] = { + 0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, + 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, 40, 44, 53, + 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, + 21, 34, 37, 47, 50, 56, 59, 61, 35, 36, 48, 49, 57, 58, 62, 63}; + +static void stbiw__jpg_writeBits(stbi__write_context *s, int *bitBufP, + int *bitCntP, const unsigned short *bs) { + int bitBuf = *bitBufP, bitCnt = *bitCntP; + bitCnt += bs[1]; + bitBuf |= bs[0] << (24 - bitCnt); + while (bitCnt >= 8) { + unsigned char c = (bitBuf >> 16) & 255; + stbiw__putc(s, c); + if (c == 255) { + stbiw__putc(s, 0); + } + bitBuf <<= 8; + bitCnt -= 8; + } + *bitBufP = bitBuf; + *bitCntP = bitCnt; +} + +static void stbiw__jpg_DCT(float *d0p, float *d1p, float *d2p, float *d3p, + float *d4p, float *d5p, float *d6p, float *d7p) { + float d0 = *d0p, d1 = *d1p, d2 = *d2p, d3 = *d3p, d4 = *d4p, d5 = *d5p, + d6 = *d6p, d7 = *d7p; + float z1, z2, z3, z4, z5, z11, z13; + + float tmp0 = d0 + d7; + float tmp7 = d0 - d7; + float tmp1 = d1 + d6; + float tmp6 = d1 - d6; + float tmp2 = d2 + d5; + float tmp5 = d2 - d5; + float tmp3 = d3 + d4; + float tmp4 = d3 - d4; + + // Even part + float tmp10 = tmp0 + tmp3; // phase 2 + float tmp13 = tmp0 - tmp3; + float tmp11 = tmp1 + tmp2; + float tmp12 = tmp1 - tmp2; + + d0 = tmp10 + tmp11; // phase 3 + d4 = tmp10 - tmp11; + + z1 = (tmp12 + tmp13) * 0.707106781f; // c4 + d2 = tmp13 + z1; // phase 5 + d6 = tmp13 - z1; + + // Odd part + tmp10 = tmp4 + tmp5; // phase 2 + tmp11 = tmp5 + tmp6; + tmp12 = tmp6 + tmp7; + + // The rotator is modified from fig 4-8 to avoid extra negations. + z5 = (tmp10 - tmp12) * 0.382683433f; // c6 + z2 = tmp10 * 0.541196100f + z5; // c2-c6 + z4 = tmp12 * 1.306562965f + z5; // c2+c6 + z3 = tmp11 * 0.707106781f; // c4 + + z11 = tmp7 + z3; // phase 5 + z13 = tmp7 - z3; + + *d5p = z13 + z2; // phase 6 + *d3p = z13 - z2; + *d1p = z11 + z4; + *d7p = z11 - z4; + + *d0p = d0; + *d2p = d2; + *d4p = d4; + *d6p = d6; +} + +static void stbiw__jpg_calcBits(int val, unsigned short bits[2]) { + int tmp1 = val < 0 ? -val : val; + val = val < 0 ? val - 1 : val; + bits[1] = 1; + while (tmp1 >>= 1) { + ++bits[1]; + } + bits[0] = val & ((1 << bits[1]) - 1); +} + +static int stbiw__jpg_processDU(stbi__write_context *s, int *bitBuf, + int *bitCnt, float *CDU, int du_stride, + float *fdtbl, int DC, + const unsigned short HTDC[256][2], + const unsigned short HTAC[256][2]) { + const unsigned short EOB[2] = {HTAC[0x00][0], HTAC[0x00][1]}; + const unsigned short M16zeroes[2] = {HTAC[0xF0][0], HTAC[0xF0][1]}; + int dataOff, i, j, n, diff, end0pos, x, y; + int DU[64]; + + // DCT rows + for (dataOff = 0, n = du_stride * 8; dataOff < n; dataOff += du_stride) { + stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + 1], &CDU[dataOff + 2], + &CDU[dataOff + 3], &CDU[dataOff + 4], &CDU[dataOff + 5], + &CDU[dataOff + 6], &CDU[dataOff + 7]); + } + // DCT columns + for (dataOff = 0; dataOff < 8; ++dataOff) { + stbiw__jpg_DCT(&CDU[dataOff], &CDU[dataOff + du_stride], + &CDU[dataOff + du_stride * 2], &CDU[dataOff + du_stride * 3], + &CDU[dataOff + du_stride * 4], &CDU[dataOff + du_stride * 5], + &CDU[dataOff + du_stride * 6], + &CDU[dataOff + du_stride * 7]); + } + // Quantize/descale/zigzag the coefficients + for (y = 0, j = 0; y < 8; ++y) { + for (x = 0; x < 8; ++x, ++j) { + float v; + i = y * du_stride + x; + v = CDU[i] * fdtbl[j]; + // DU[stbiw__jpg_ZigZag[j]] = (int)(v < 0 ? ceilf(v - 0.5f) : floorf(v + + // 0.5f)); ceilf() and floorf() are C99, not C89, but I /think/ they're + // not needed here anyway? + DU[stbiw__jpg_ZigZag[j]] = (int)(v < 0 ? v - 0.5f : v + 0.5f); + } + } + + // Encode DC + diff = DU[0] - DC; + if (diff == 0) { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[0]); + } else { + unsigned short bits[2]; + stbiw__jpg_calcBits(diff, bits); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTDC[bits[1]]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits); + } + // Encode ACs + end0pos = 63; + for (; (end0pos > 0) && (DU[end0pos] == 0); --end0pos) { + } + // end0pos = first element in reverse order !=0 + if (end0pos == 0) { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); + return DU[0]; + } + for (i = 1; i <= end0pos; ++i) { + int startpos = i; + int nrzeroes; + unsigned short bits[2]; + for (; DU[i] == 0 && i <= end0pos; ++i) { + } + nrzeroes = i - startpos; + if (nrzeroes >= 16) { + int lng = nrzeroes >> 4; + int nrmarker; + for (nrmarker = 1; nrmarker <= lng; ++nrmarker) + stbiw__jpg_writeBits(s, bitBuf, bitCnt, M16zeroes); + nrzeroes &= 15; + } + stbiw__jpg_calcBits(DU[i], bits); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, HTAC[(nrzeroes << 4) + bits[1]]); + stbiw__jpg_writeBits(s, bitBuf, bitCnt, bits); + } + if (end0pos != 63) { + stbiw__jpg_writeBits(s, bitBuf, bitCnt, EOB); + } + return DU[0]; +} + +static int stbi_write_jpg_core(stbi__write_context *s, int width, int height, + int comp, const void *data, int quality) { + // Constants that don't pollute global namespace + static const unsigned char std_dc_luminance_nrcodes[] = { + 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0}; + static const unsigned char std_dc_luminance_values[] = {0, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 10, 11}; + static const unsigned char std_ac_luminance_nrcodes[] = { + 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d}; + static const unsigned char std_ac_luminance_values[] = { + 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, + 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, + 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, + 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, + 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, + 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, + 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, + 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, + 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, + 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, + 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, + 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, + 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, + 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa}; + static const unsigned char std_dc_chrominance_nrcodes[] = { + 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0}; + static const unsigned char std_dc_chrominance_values[] = {0, 1, 2, 3, 4, 5, + 6, 7, 8, 9, 10, 11}; + static const unsigned char std_ac_chrominance_nrcodes[] = { + 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77}; + static const unsigned char std_ac_chrominance_values[] = { + 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, + 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, + 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62, 0x72, 0xd1, + 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, + 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, + 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, + 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, + 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, + 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, + 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, + 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, + 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, + 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, + 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa}; + // Huffman tables + static const unsigned short YDC_HT[256][2] = { + {0, 2}, {2, 3}, {3, 3}, {4, 3}, {5, 3}, {6, 3}, + {14, 4}, {30, 5}, {62, 6}, {126, 7}, {254, 8}, {510, 9}}; + static const unsigned short UVDC_HT[256][2] = { + {0, 2}, {1, 2}, {2, 2}, {6, 3}, {14, 4}, {30, 5}, + {62, 6}, {126, 7}, {254, 8}, {510, 9}, {1022, 10}, {2046, 11}}; + static const unsigned short YAC_HT[256][2] = { + {10, 4}, {0, 2}, {1, 2}, {4, 3}, {11, 4}, + {26, 5}, {120, 7}, {248, 8}, {1014, 10}, {65410, 16}, + {65411, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {12, 4}, {27, 5}, {121, 7}, + {502, 9}, {2038, 11}, {65412, 16}, {65413, 16}, {65414, 16}, + {65415, 16}, {65416, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {28, 5}, {249, 8}, + {1015, 10}, {4084, 12}, {65417, 16}, {65418, 16}, {65419, 16}, + {65420, 16}, {65421, 16}, {65422, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {58, 6}, + {503, 9}, {4085, 12}, {65423, 16}, {65424, 16}, {65425, 16}, + {65426, 16}, {65427, 16}, {65428, 16}, {65429, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {59, 6}, {1016, 10}, {65430, 16}, {65431, 16}, {65432, 16}, + {65433, 16}, {65434, 16}, {65435, 16}, {65436, 16}, {65437, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {122, 7}, {2039, 11}, {65438, 16}, {65439, 16}, + {65440, 16}, {65441, 16}, {65442, 16}, {65443, 16}, {65444, 16}, + {65445, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {123, 7}, {4086, 12}, {65446, 16}, + {65447, 16}, {65448, 16}, {65449, 16}, {65450, 16}, {65451, 16}, + {65452, 16}, {65453, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {250, 8}, {4087, 12}, + {65454, 16}, {65455, 16}, {65456, 16}, {65457, 16}, {65458, 16}, + {65459, 16}, {65460, 16}, {65461, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {504, 9}, + {32704, 15}, {65462, 16}, {65463, 16}, {65464, 16}, {65465, 16}, + {65466, 16}, {65467, 16}, {65468, 16}, {65469, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {505, 9}, {65470, 16}, {65471, 16}, {65472, 16}, {65473, 16}, + {65474, 16}, {65475, 16}, {65476, 16}, {65477, 16}, {65478, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {506, 9}, {65479, 16}, {65480, 16}, {65481, 16}, + {65482, 16}, {65483, 16}, {65484, 16}, {65485, 16}, {65486, 16}, + {65487, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {1017, 10}, {65488, 16}, {65489, 16}, + {65490, 16}, {65491, 16}, {65492, 16}, {65493, 16}, {65494, 16}, + {65495, 16}, {65496, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {1018, 10}, {65497, 16}, + {65498, 16}, {65499, 16}, {65500, 16}, {65501, 16}, {65502, 16}, + {65503, 16}, {65504, 16}, {65505, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2040, 11}, + {65506, 16}, {65507, 16}, {65508, 16}, {65509, 16}, {65510, 16}, + {65511, 16}, {65512, 16}, {65513, 16}, {65514, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {65515, 16}, {65516, 16}, {65517, 16}, {65518, 16}, {65519, 16}, + {65520, 16}, {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {2041, 11}, {65525, 16}, {65526, 16}, {65527, 16}, {65528, 16}, + {65529, 16}, {65530, 16}, {65531, 16}, {65532, 16}, {65533, 16}, + {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}}; + static const unsigned short UVAC_HT[256][2] = { + {0, 2}, {1, 2}, {4, 3}, {10, 4}, {24, 5}, + {25, 5}, {56, 6}, {120, 7}, {500, 9}, {1014, 10}, + {4084, 12}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {11, 4}, {57, 6}, {246, 8}, + {501, 9}, {2038, 11}, {4085, 12}, {65416, 16}, {65417, 16}, + {65418, 16}, {65419, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {26, 5}, {247, 8}, + {1015, 10}, {4086, 12}, {32706, 15}, {65420, 16}, {65421, 16}, + {65422, 16}, {65423, 16}, {65424, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {27, 5}, + {248, 8}, {1016, 10}, {4087, 12}, {65425, 16}, {65426, 16}, + {65427, 16}, {65428, 16}, {65429, 16}, {65430, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {58, 6}, {502, 9}, {65431, 16}, {65432, 16}, {65433, 16}, + {65434, 16}, {65435, 16}, {65436, 16}, {65437, 16}, {65438, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {59, 6}, {1017, 10}, {65439, 16}, {65440, 16}, + {65441, 16}, {65442, 16}, {65443, 16}, {65444, 16}, {65445, 16}, + {65446, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {121, 7}, {2039, 11}, {65447, 16}, + {65448, 16}, {65449, 16}, {65450, 16}, {65451, 16}, {65452, 16}, + {65453, 16}, {65454, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {122, 7}, {2040, 11}, + {65455, 16}, {65456, 16}, {65457, 16}, {65458, 16}, {65459, 16}, + {65460, 16}, {65461, 16}, {65462, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {249, 8}, + {65463, 16}, {65464, 16}, {65465, 16}, {65466, 16}, {65467, 16}, + {65468, 16}, {65469, 16}, {65470, 16}, {65471, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {503, 9}, {65472, 16}, {65473, 16}, {65474, 16}, {65475, 16}, + {65476, 16}, {65477, 16}, {65478, 16}, {65479, 16}, {65480, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {504, 9}, {65481, 16}, {65482, 16}, {65483, 16}, + {65484, 16}, {65485, 16}, {65486, 16}, {65487, 16}, {65488, 16}, + {65489, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {505, 9}, {65490, 16}, {65491, 16}, + {65492, 16}, {65493, 16}, {65494, 16}, {65495, 16}, {65496, 16}, + {65497, 16}, {65498, 16}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {506, 9}, {65499, 16}, + {65500, 16}, {65501, 16}, {65502, 16}, {65503, 16}, {65504, 16}, + {65505, 16}, {65506, 16}, {65507, 16}, {0, 0}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {2041, 11}, + {65508, 16}, {65509, 16}, {65510, 16}, {65511, 16}, {65512, 16}, + {65513, 16}, {65514, 16}, {65515, 16}, {65516, 16}, {0, 0}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {16352, 14}, {65517, 16}, {65518, 16}, {65519, 16}, {65520, 16}, + {65521, 16}, {65522, 16}, {65523, 16}, {65524, 16}, {65525, 16}, + {0, 0}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {1018, 10}, {32707, 15}, {65526, 16}, {65527, 16}, {65528, 16}, + {65529, 16}, {65530, 16}, {65531, 16}, {65532, 16}, {65533, 16}, + {65534, 16}, {0, 0}, {0, 0}, {0, 0}, {0, 0}, + {0, 0}}; + static const int YQT[] = { + 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, + 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, + 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, + 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99}; + static const int UVQT[] = {17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, + 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, + 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}; + static const float aasf[] = { + 1.0f * 2.828427125f, 1.387039845f * 2.828427125f, + 1.306562965f * 2.828427125f, 1.175875602f * 2.828427125f, + 1.0f * 2.828427125f, 0.785694958f * 2.828427125f, + 0.541196100f * 2.828427125f, 0.275899379f * 2.828427125f}; + + int row, col, i, k, subsample; + float fdtbl_Y[64], fdtbl_UV[64]; + unsigned char YTable[64], UVTable[64]; + + if (!data || !width || !height || comp > 4 || comp < 1) { + return 0; + } + + quality = quality ? quality : 90; + subsample = quality <= 90 ? 1 : 0; + quality = quality < 1 ? 1 : quality > 100 ? 100 : quality; + quality = quality < 50 ? 5000 / quality : 200 - quality * 2; + + for (i = 0; i < 64; ++i) { + int uvti, yti = (YQT[i] * quality + 50) / 100; + YTable[stbiw__jpg_ZigZag[i]] = (unsigned char)(yti < 1 ? 1 + : yti > 255 ? 255 + : yti); + uvti = (UVQT[i] * quality + 50) / 100; + UVTable[stbiw__jpg_ZigZag[i]] = (unsigned char)(uvti < 1 ? 1 + : uvti > 255 ? 255 + : uvti); + } + + for (row = 0, k = 0; row < 8; ++row) { + for (col = 0; col < 8; ++col, ++k) { + fdtbl_Y[k] = 1 / (YTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + fdtbl_UV[k] = 1 / (UVTable[stbiw__jpg_ZigZag[k]] * aasf[row] * aasf[col]); + } + } + + // Write Headers + { + static const unsigned char head0[] = { + 0xFF, 0xD8, 0xFF, 0xE0, 0, 0x10, 'J', 'F', 'I', 'F', 0, 1, 1, + 0, 0, 1, 0, 1, 0, 0, 0xFF, 0xDB, 0, 0x84, 0}; + static const unsigned char head2[] = {0xFF, 0xDA, 0, 0xC, 3, 1, 0, + 2, 0x11, 3, 0x11, 0, 0x3F, 0}; + const unsigned char head1[] = {0xFF, + 0xC0, + 0, + 0x11, + 8, + (unsigned char)(height >> 8), + STBIW_UCHAR(height), + (unsigned char)(width >> 8), + STBIW_UCHAR(width), + 3, + 1, + (unsigned char)(subsample ? 0x22 : 0x11), + 0, + 2, + 0x11, + 1, + 3, + 0x11, + 1, + 0xFF, + 0xC4, + 0x01, + 0xA2, + 0}; + s->func(s->context, (void *)head0, sizeof(head0)); + s->func(s->context, (void *)YTable, sizeof(YTable)); + stbiw__putc(s, 1); + s->func(s->context, UVTable, sizeof(UVTable)); + s->func(s->context, (void *)head1, sizeof(head1)); + s->func(s->context, (void *)(std_dc_luminance_nrcodes + 1), + sizeof(std_dc_luminance_nrcodes) - 1); + s->func(s->context, (void *)std_dc_luminance_values, + sizeof(std_dc_luminance_values)); + stbiw__putc(s, 0x10); // HTYACinfo + s->func(s->context, (void *)(std_ac_luminance_nrcodes + 1), + sizeof(std_ac_luminance_nrcodes) - 1); + s->func(s->context, (void *)std_ac_luminance_values, + sizeof(std_ac_luminance_values)); + stbiw__putc(s, 1); // HTUDCinfo + s->func(s->context, (void *)(std_dc_chrominance_nrcodes + 1), + sizeof(std_dc_chrominance_nrcodes) - 1); + s->func(s->context, (void *)std_dc_chrominance_values, + sizeof(std_dc_chrominance_values)); + stbiw__putc(s, 0x11); // HTUACinfo + s->func(s->context, (void *)(std_ac_chrominance_nrcodes + 1), + sizeof(std_ac_chrominance_nrcodes) - 1); + s->func(s->context, (void *)std_ac_chrominance_values, + sizeof(std_ac_chrominance_values)); + s->func(s->context, (void *)head2, sizeof(head2)); + } + + // Encode 8x8 macroblocks + { + static const unsigned short fillBits[] = {0x7F, 7}; + int DCY = 0, DCU = 0, DCV = 0; + int bitBuf = 0, bitCnt = 0; + // comp == 2 is grey+alpha (alpha is ignored) + int ofsG = comp > 2 ? 1 : 0, ofsB = comp > 2 ? 2 : 0; + const unsigned char *dataR = (const unsigned char *)data; + const unsigned char *dataG = dataR + ofsG; + const unsigned char *dataB = dataR + ofsB; + int x, y, pos; + if (subsample) { + for (y = 0; y < height; y += 16) { + for (x = 0; x < width; x += 16) { + float Y[256], U[256], V[256]; + for (row = y, pos = 0; row < y + 16; ++row) { + // row >= height => use last input row + int clamped_row = (row < height) ? row : height - 1; + int base_p = + (stbi__flip_vertically_on_write ? (height - 1 - clamped_row) + : clamped_row) * + width * comp; + for (col = x; col < x + 16; ++col, ++pos) { + // if col >= width => use pixel from last input column + int p = base_p + ((col < width) ? col : (width - 1)) * comp; + float r = dataR[p], g = dataG[p], b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 0, 16, fdtbl_Y, + DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 8, 16, fdtbl_Y, + DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 128, 16, fdtbl_Y, + DCY, YDC_HT, YAC_HT); + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y + 136, 16, fdtbl_Y, + DCY, YDC_HT, YAC_HT); + + // subsample U,V + { + float subU[64], subV[64]; + int yy, xx; + for (yy = 0, pos = 0; yy < 8; ++yy) { + for (xx = 0; xx < 8; ++xx, ++pos) { + int j = yy * 32 + xx * 2; + subU[pos] = + (U[j + 0] + U[j + 1] + U[j + 16] + U[j + 17]) * 0.25f; + subV[pos] = + (V[j + 0] + V[j + 1] + V[j + 16] + V[j + 17]) * 0.25f; + } + } + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subU, 8, fdtbl_UV, + DCU, UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, subV, 8, fdtbl_UV, + DCV, UVDC_HT, UVAC_HT); + } + } + } + } else { + for (y = 0; y < height; y += 8) { + for (x = 0; x < width; x += 8) { + float Y[64], U[64], V[64]; + for (row = y, pos = 0; row < y + 8; ++row) { + // row >= height => use last input row + int clamped_row = (row < height) ? row : height - 1; + int base_p = + (stbi__flip_vertically_on_write ? (height - 1 - clamped_row) + : clamped_row) * + width * comp; + for (col = x; col < x + 8; ++col, ++pos) { + // if col >= width => use pixel from last input column + int p = base_p + ((col < width) ? col : (width - 1)) * comp; + float r = dataR[p], g = dataG[p], b = dataB[p]; + Y[pos] = +0.29900f * r + 0.58700f * g + 0.11400f * b - 128; + U[pos] = -0.16874f * r - 0.33126f * g + 0.50000f * b; + V[pos] = +0.50000f * r - 0.41869f * g - 0.08131f * b; + } + } + + DCY = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, Y, 8, fdtbl_Y, DCY, + YDC_HT, YAC_HT); + DCU = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, U, 8, fdtbl_UV, DCU, + UVDC_HT, UVAC_HT); + DCV = stbiw__jpg_processDU(s, &bitBuf, &bitCnt, V, 8, fdtbl_UV, DCV, + UVDC_HT, UVAC_HT); + } + } + } + + // Do the bit alignment of the EOI marker + stbiw__jpg_writeBits(s, &bitBuf, &bitCnt, fillBits); + } + + // EOI + stbiw__putc(s, 0xFF); + stbiw__putc(s, 0xD9); + + return 1; +} + +STBIWDEF int stbi_write_jpg_to_func(stbi_write_func *func, void *context, int x, + int y, int comp, const void *data, + int quality) { + stbi__write_context s = {0}; + stbi__start_write_callbacks(&s, func, context); + return stbi_write_jpg_core(&s, x, y, comp, (void *)data, quality); +} + +#ifndef STBI_WRITE_NO_STDIO +STBIWDEF int stbi_write_jpg(char const *filename, int x, int y, int comp, + const void *data, int quality) { + stbi__write_context s = {0}; + if (stbi__start_write_file(&s, filename)) { + int r = stbi_write_jpg_core(&s, x, y, comp, data, quality); + stbi__end_write_file(&s); + return r; + } else + return 0; +} +#endif + +#endif // STB_IMAGE_WRITE_IMPLEMENTATION + +/* Revision history + 1.16 (2021-07-11) + make Deflate code emit uncompressed blocks when it would otherwise + expand support writing BMPs with alpha channel 1.15 (2020-07-13) unknown + 1.14 (2020-02-02) updated JPEG writer to downsample chroma channels + 1.13 + 1.12 + 1.11 (2019-08-11) + + 1.10 (2019-02-07) + support utf8 filenames in Windows; fix warnings and platform ifdefs + 1.09 (2018-02-11) + fix typo in zlib quality API, improve STB_I_W_STATIC in C++ + 1.08 (2018-01-29) + add stbi__flip_vertically_on_write, external zlib, zlib quality, + choose PNG filter 1.07 (2017-07-24) doc fix 1.06 (2017-07-23) writing JPEG + (using Jon Olick's code) 1.05 ??? 1.04 (2017-03-03) monochrome BMP + expansion 1.03 ??? 1.02 (2016-04-02) avoid allocating large structures on + the stack 1.01 (2016-01-16) STBIW_REALLOC_SIZED: support allocators with no + realloc support avoid race-condition in crc initialization minor compile + issues 1.00 (2015-09-14) installable file IO function 0.99 (2015-09-13) + warning fixes; TGA rle support + 0.98 (2015-04-08) + added STBIW_MALLOC, STBIW_ASSERT etc + 0.97 (2015-01-18) + fixed HDR asserts, rewrote HDR rle logic + 0.96 (2015-01-17) + add HDR output + fix monochrome BMP + 0.95 (2014-08-17) + add monochrome TGA output + 0.94 (2014-05-31) + rename private functions to avoid conflicts with stb_image.h + 0.93 (2014-05-27) + warning fixes + 0.92 (2010-08-01) + casts to unsigned char to fix warnings + 0.91 (2010-07-17) + first public release + 0.90 first internal release +*/ + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/packages/video_player_avplay/tizen/src/plus_player.cc b/packages/video_player_avplay/tizen/src/plus_player.cc index 9dfc96079..b1dd233cc 100644 --- a/packages/video_player_avplay/tizen/src/plus_player.cc +++ b/packages/video_player_avplay/tizen/src/plus_player.cc @@ -14,6 +14,9 @@ #include "rapidjson/stringbuffer.h" #include "rapidjson/writer.h" +#define STB_IMAGE_WRITE_IMPLEMENTATION +#include "stb_image_write.h" + namespace video_player_avplay_tizen { static std::vector split(const std::string &s, char delim) { @@ -1132,15 +1135,26 @@ void PlusPlayer::OnSubtitleData(char *data, const int size, const uint64_t duration, plusplayer::SubtitleAttributeListPtr attr_list, void *user_data) { - LOG_INFO("[PlusPlayer] Subtitle updated, duration: %llu, text: %s", duration, - data); + LOG_INFO("[PlusPlayer] Subtitle updated, duration: %llu, type: %d", duration, + type); + + if (!data || type == plusplayer::SubtitleType::kInvalid) { + LOG_ERROR("[PlusPlayer] Subtitle type is invalid or data is null."); + return; + } + PlusPlayer *self = reinterpret_cast(user_data); + // Pre-parse attributes to find width/height for picture subtitles. + double picture_width = 0.0; + double picture_height = 0.0; + plusplayer::SubtitleAttributeList *attrs = attr_list.get(); flutter::EncodableList attributes_list; for (auto attr = attrs->begin(); attr != attrs->end(); attr++) { - LOG_INFO("[PlusPlayer] Subtitle update: type: %d, start: %u, end: %u", - attr->type, attr->start_time, attr->stop_time); + LOG_DEBUG( + "[PlusPlayer] SubtitleAttr update: attrType: %d, start: %u, end: %u.", + attr->type, attr->start_time, attr->stop_time); flutter::EncodableMap attributes = { {flutter::EncodableValue("attrType"), flutter::EncodableValue(attr->type)}, @@ -1170,6 +1184,15 @@ void PlusPlayer::OnSubtitleData(char *data, const int size, LOG_INFO("[PlusPlayer] Subtitle update: value: %f", value_float); attributes[flutter::EncodableValue("attrValue")] = flutter::EncodableValue((double)value_float); + + if (attr->type == plusplayer::kSubAttrRegionWidth && + type == plusplayer::SubtitleType::kPicture) { + picture_width = (double)value_float; + } + if (attr->type == plusplayer::kSubAttrRegionHeight && + type == plusplayer::SubtitleType::kPicture) { + picture_height = (double)value_float; + } } break; case plusplayer::kSubAttrWindowLeftMargin: case plusplayer::kSubAttrWindowRightMargin: @@ -1192,33 +1215,61 @@ void PlusPlayer::OnSubtitleData(char *data, const int size, case plusplayer::kSubAttrWebvttCueVertical: case plusplayer::kSubAttrTimestamp: { int value_int = reinterpret_cast(attr->value); - LOG_INFO("[PlusPlayer] Subtitle update: value: %d", value_int); + LOG_DEBUG("[PlusPlayer] Subtitle update: value: %d", value_int); attributes[flutter::EncodableValue("attrValue")] = flutter::EncodableValue(value_int); } break; case plusplayer::kSubAttrFontFamily: case plusplayer::kSubAttrRawSubtitle: { const char *value_chars = reinterpret_cast(attr->value); - LOG_INFO("[PlusPlayer] Subtitle update: value: %s", - value_chars); + LOG_DEBUG("[PlusPlayer] Subtitle update: value: %s", + value_chars); std::string value_string(value_chars); attributes[flutter::EncodableValue("attrValue")] = flutter::EncodableValue(value_string); } break; case plusplayer::kSubAttrWindowShowBg: { uint32_t value_uint32 = reinterpret_cast(attr->value); - LOG_INFO("[PlusPlayer] Subtitle update: value: %u", - value_uint32); + LOG_DEBUG("[PlusPlayer] Subtitle update: value: %u", + value_uint32); attributes[flutter::EncodableValue("attrValue")] = flutter::EncodableValue((int64_t)value_uint32); } break; default: - LOG_ERROR("[PlusPlayer] Unknown Subtitle type: %d", attr->type); + LOG_DEBUG("[PlusPlayer] Unknown Subtitle type: %d", attr->type); break; } attributes_list.push_back(flutter::EncodableValue(attributes)); } - self->SendSubtitleUpdate(duration, data, attributes_list); + + if (type == plusplayer::SubtitleType::kPicture) { + LOG_INFO( + "[PlusPlayer] Subtitle is a picture: size: %d, width: %f, height: %f", + size, picture_width, picture_height); + + int subtitle_mem_length = 0; + int channels = size / (picture_width * picture_height); + unsigned char *subtitle_png = + stbi_write_png_to_mem((const unsigned char *)data, 0, picture_width, + picture_height, channels, &subtitle_mem_length); + + if (subtitle_png && subtitle_mem_length > 0) { + std::vector picture_data(subtitle_png, + subtitle_png + subtitle_mem_length); + self->SendSubtitleUpdate(duration, std::string(), attributes_list, + picture_data, picture_width, picture_height); + STBIW_FREE(subtitle_png); + } else { + LOG_ERROR("[PlusPlayer] Picture subtitle data is null or size is 0."); + STBIW_FREE(subtitle_png); + } + + } else { + LOG_INFO( + "[PlusPlayer] Subtitle is text: duration: %llu, text: %s, type: %d", + duration, data, type); + self->SendSubtitleUpdate(duration, data, attributes_list); + } } void PlusPlayer::OnResourceConflicted(void *user_data) { diff --git a/packages/video_player_avplay/tizen/src/video_player.cc b/packages/video_player_avplay/tizen/src/video_player.cc index 289c82d29..c27cf7f04 100644 --- a/packages/video_player_avplay/tizen/src/video_player.cc +++ b/packages/video_player_avplay/tizen/src/video_player.cc @@ -148,15 +148,22 @@ void VideoPlayer::SendBufferingEnd() { } void VideoPlayer::SendSubtitleUpdate(int32_t duration, const std::string &text, - flutter::EncodableList attributes) { + flutter::EncodableList attributes, + const std::vector &picture, + const double &picture_width, + const double &picture_height) { flutter::EncodableMap result = { {flutter::EncodableValue("event"), flutter::EncodableValue("subtitleUpdate")}, {flutter::EncodableValue("duration"), flutter::EncodableValue(duration)}, {flutter::EncodableValue("text"), flutter::EncodableValue(text)}, + {flutter::EncodableValue("picture"), flutter::EncodableValue(picture)}, + {flutter::EncodableValue("pictureWidth"), + flutter::EncodableValue(picture_width)}, + {flutter::EncodableValue("pictureHeight"), + flutter::EncodableValue(picture_height)}, {flutter::EncodableValue("attributes"), - flutter::EncodableValue(attributes)}, - }; + flutter::EncodableValue(attributes)}}; PushEvent(flutter::EncodableValue(result)); } diff --git a/packages/video_player_avplay/tizen/src/video_player.h b/packages/video_player_avplay/tizen/src/video_player.h index 83b751c67..b4bbea91a 100644 --- a/packages/video_player_avplay/tizen/src/video_player.h +++ b/packages/video_player_avplay/tizen/src/video_player.h @@ -84,7 +84,9 @@ class VideoPlayer { void SendBufferingEnd(); void SendSubtitleUpdate( int32_t duration, const std::string &text, - flutter::EncodableList attributes = flutter::EncodableList{}); + flutter::EncodableList attributes = flutter::EncodableList{}, + const std::vector &picture = std::vector(), + const double &picture_width = 0.0, const double &picture_height = 0.0); void SendPlayCompleted(); void SendIsPlayingState(bool is_playing); void SendRestored(); From 819b07c1d0f1a7b1fcfa1d1de456bb6365342fa7 Mon Sep 17 00:00:00 2001 From: "yying.jin" Date: Mon, 29 Sep 2025 14:05:15 +0800 Subject: [PATCH 2/5] Correct subtitle duration --- packages/video_player_avplay/lib/video_player.dart | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/packages/video_player_avplay/lib/video_player.dart b/packages/video_player_avplay/lib/video_player.dart index 3b7b4d06b..9904c121f 100644 --- a/packages/video_player_avplay/lib/video_player.dart +++ b/packages/video_player_avplay/lib/video_player.dart @@ -217,8 +217,8 @@ class VideoPlayerValue { duration: duration ?? this.duration, size: size ?? this.size, position: position ?? this.position, - textCaption: textCaption ?? this.textCaption, - pictureCaption: pictureCaption ?? this.pictureCaption, + textCaption: textCaption ?? TextCaption.none, + pictureCaption: pictureCaption ?? PictureCaption.none, captionOffset: captionOffset ?? this.captionOffset, tracks: tracks ?? this.tracks, buffered: buffered ?? this.buffered, From c79d086a13abea6843cd92dcc30b2bfdd54a9f82 Mon Sep 17 00:00:00 2001 From: "yying.jin" Date: Mon, 29 Sep 2025 14:09:20 +0800 Subject: [PATCH 3/5] ignore avoid_print --- packages/video_player_avplay/lib/video_player.dart | 2 ++ 1 file changed, 2 insertions(+) diff --git a/packages/video_player_avplay/lib/video_player.dart b/packages/video_player_avplay/lib/video_player.dart index 9904c121f..f9dc39b0d 100644 --- a/packages/video_player_avplay/lib/video_player.dart +++ b/packages/video_player_avplay/lib/video_player.dart @@ -1617,7 +1617,9 @@ class ClosedCaption extends StatelessWidget { final Image subtitleImage = Image.memory(this.subtitleImage!, width: subtitleImageWidth, height: subtitleImageHeight, errorBuilder: (BuildContext context, Object error, StackTrace? stackTrace) { + // ignore: avoid_print print('[ClosedCaption] Image.memory error: $error'); + // ignore: avoid_print print('[ClosedCaption] StackTrace: $stackTrace'); return const Text(''); From 2883e376797d090ef17475f7a5d1eeff3aeb0275 Mon Sep 17 00:00:00 2001 From: "yying.jin" Date: Sat, 11 Oct 2025 10:05:47 +0800 Subject: [PATCH 4/5] update version --- packages/video_player_avplay/CHANGELOG.md | 4 ++++ packages/video_player_avplay/README.md | 2 +- packages/video_player_avplay/pubspec.yaml | 2 +- 3 files changed, 6 insertions(+), 2 deletions(-) diff --git a/packages/video_player_avplay/CHANGELOG.md b/packages/video_player_avplay/CHANGELOG.md index 11eb221cb..1380008d8 100644 --- a/packages/video_player_avplay/CHANGELOG.md +++ b/packages/video_player_avplay/CHANGELOG.md @@ -1,3 +1,7 @@ +## 0.7.3 +* Support parsing SMPE-TT(sidecar) subtitle attributes. +* Support image format subtitles. + ## 0.7.2 * Fix type missmatch. diff --git a/packages/video_player_avplay/README.md b/packages/video_player_avplay/README.md index 24718aa12..c9c38ec68 100644 --- a/packages/video_player_avplay/README.md +++ b/packages/video_player_avplay/README.md @@ -12,7 +12,7 @@ To use this package, add `video_player_avplay` as a dependency in your `pubspec. ```yaml dependencies: - video_player_avplay: ^0.7.2 + video_player_avplay: ^0.7.3 ``` Then you can import `video_player_avplay` in your Dart code: diff --git a/packages/video_player_avplay/pubspec.yaml b/packages/video_player_avplay/pubspec.yaml index 02e5a6687..57a142abe 100644 --- a/packages/video_player_avplay/pubspec.yaml +++ b/packages/video_player_avplay/pubspec.yaml @@ -2,7 +2,7 @@ name: video_player_avplay description: Flutter plugin for displaying inline video on Tizen TV devices. homepage: https://github.com/flutter-tizen/plugins repository: https://github.com/flutter-tizen/plugins/tree/master/packages/video_player_avplay -version: 0.7.2 +version: 0.7.3 environment: sdk: ">=3.1.0 <4.0.0" From 2aad2c9a232fee4da7dc661903fee41eadf3b783 Mon Sep 17 00:00:00 2001 From: "yying.jin" Date: Sat, 11 Oct 2025 14:23:49 +0800 Subject: [PATCH 5/5] fix review issues --- .../lib/src/closed_caption_file.dart | 20 ++++++++----------- .../video_player_avplay/lib/video_player.dart | 2 +- .../tizen/src/plus_player.cc | 2 -- 3 files changed, 9 insertions(+), 15 deletions(-) diff --git a/packages/video_player_avplay/lib/src/closed_caption_file.dart b/packages/video_player_avplay/lib/src/closed_caption_file.dart index 7ad670ce0..7a1a7635c 100644 --- a/packages/video_player_avplay/lib/src/closed_caption_file.dart +++ b/packages/video_player_avplay/lib/src/closed_caption_file.dart @@ -73,7 +73,7 @@ class TextCaption extends Caption { /// and [end]. final String text; - /// The subtitile attributes associated with this caption. + /// The subtitle attributes associated with this caption. final List? subtitleAttributes; /// Specifies how the text in the closed caption should look. @@ -89,7 +89,7 @@ class TextCaption extends Caption { subtitleAttributes: [], ); - static Color? _toColor(int colorValue) { + static Color? _intToColor(int colorValue) { String hexValue = colorValue.toRadixString(16); if (hexValue.length < 6) { hexValue = hexValue.padLeft(6, '0'); @@ -103,11 +103,11 @@ class TextCaption extends Caption { return null; } - static FontWeight _toWeight(int weightValue) { + static FontWeight _intToFontWeight(int weightValue) { return weightValue == 0 ? FontWeight.normal : FontWeight.bold; } - static FontStyle _toStyle(int styleValue) { + static FontStyle _intToFontStyle(int styleValue) { return styleValue == 0 ? FontStyle.normal : FontStyle.italic; } @@ -131,19 +131,19 @@ class TextCaption extends Caption { } case SubtitleAttrType.subAttrFontWeight: actualTextStyle = actualTextStyle.copyWith( - fontWeight: _toWeight(attr.attrValue as int)); + fontWeight: _intToFontWeight(attr.attrValue as int)); case SubtitleAttrType.subAttrFontStyle: actualTextStyle = actualTextStyle.copyWith( - fontStyle: _toStyle(attr.attrValue as int)); + fontStyle: _intToFontStyle(attr.attrValue as int)); case SubtitleAttrType.subAttrFontColor: if (actualTextStyle.foreground == null) { actualTextStyle = actualTextStyle.copyWith( - color: _toColor(attr.attrValue as int)); + color: _intToColor(attr.attrValue as int)); } case SubtitleAttrType.subAttrFontBgColor: if (actualTextStyle.background == null) { actualTextStyle = actualTextStyle.copyWith( - backgroundColor: _toColor(attr.attrValue as int)); + backgroundColor: _intToColor(attr.attrValue as int)); } case SubtitleAttrType.subAttrFontOpacity: actualTextStyle = actualTextStyle.copyWith( @@ -156,10 +156,6 @@ class TextCaption extends Caption { case SubtitleAttrType.subAttrFontTextOutlineColor: case SubtitleAttrType.subAttrFontTextOutlineThickness: case SubtitleAttrType.subAttrFontTextOutlineBlurRadius: - // actualTextStyle = actualTextStyle.copyWith(shadows: [ - // const Shadow(color: Colors.green, offset: Offset(1, 1)) - // ]); - break; case SubtitleAttrType.subAttrRegionXPos: case SubtitleAttrType.subAttrRegionYPos: case SubtitleAttrType.subAttrRegionWidth: diff --git a/packages/video_player_avplay/lib/video_player.dart b/packages/video_player_avplay/lib/video_player.dart index f9dc39b0d..57c64bb61 100644 --- a/packages/video_player_avplay/lib/video_player.dart +++ b/packages/video_player_avplay/lib/video_player.dart @@ -243,7 +243,7 @@ class VideoPlayerValue { 'size: $size, ' 'position: $position, ' 'textCaption: $textCaption, ' - 'pictureCapton: $pictureCaption, ' + 'pictureCaption: $pictureCaption, ' 'captionOffset: $captionOffset, ' 'tracks: $tracks, ' 'buffered: $buffered, ' diff --git a/packages/video_player_avplay/tizen/src/plus_player.cc b/packages/video_player_avplay/tizen/src/plus_player.cc index f69c354fd..5b98863b7 100644 --- a/packages/video_player_avplay/tizen/src/plus_player.cc +++ b/packages/video_player_avplay/tizen/src/plus_player.cc @@ -1261,9 +1261,7 @@ void PlusPlayer::OnSubtitleData(char *data, const int size, STBIW_FREE(subtitle_png); } else { LOG_ERROR("[PlusPlayer] Picture subtitle data is null or size is 0."); - STBIW_FREE(subtitle_png); } - } else { LOG_INFO( "[PlusPlayer] Subtitle is text: duration: %llu, text: %s, type: %d",