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ffmpeg-kit/flutter/flutter/lib/ffmpeg_session.dart

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4.6 KiB

/*
* Copyright (c) 2019-2022 Taner Sener
*
* This file is part of FFmpegKit.
*
* FFmpegKit is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* FFmpegKit is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FFmpegKit. If not, see <http://www.gnu.org/licenses/>.
*/
import 'package:ffmpeg_kit_flutter_platform_interface/ffmpeg_kit_flutter_platform_interface.dart';
import 'package:flutter/services.dart';
import 'abstract_session.dart';
import 'ffmpeg_kit_config.dart';
import 'ffmpeg_session_complete_callback.dart';
import 'log_callback.dart';
import 'log_redirection_strategy.dart';
import 'src/ffmpeg_kit_factory.dart';
import 'statistics.dart';
import 'statistics_callback.dart';
/// An FFmpeg session.
class FFmpegSession extends AbstractSession {
/// Creates a new FFmpeg session with [argumentsArray].
static Future<FFmpegSession> create(List<String> argumentsArray,
[FFmpegSessionCompleteCallback? completeCallback = null,
LogCallback? logCallback = null,
StatisticsCallback? statisticsCallback = null,
LogRedirectionStrategy? logRedirectionStrategy = null]) async {
final session = await AbstractSession.createFFmpegSession(
argumentsArray, logRedirectionStrategy);
final sessionId = session.getSessionId();
FFmpegKitFactory.setFFmpegSessionCompleteCallback(
sessionId, completeCallback);
FFmpegKitFactory.setLogCallback(sessionId, logCallback);
FFmpegKitFactory.setStatisticsCallback(sessionId, statisticsCallback);
return session;
}
/// Returns the session specific statistics callback.
StatisticsCallback? getStatisticsCallback() =>
FFmpegKitFactory.getStatisticsCallback(this.getSessionId());
/// Returns the session specific complete callback.
FFmpegSessionCompleteCallback? getCompleteCallback() =>
FFmpegKitFactory.getFFmpegSessionCompleteCallback(this.getSessionId());
/// Returns all statistics entries generated for this session. If there are
/// asynchronous statistics that are not delivered yet, this method waits for
/// them until [waitTimeout].
Future<List<Statistics>> getAllStatistics([int? waitTimeout]) async {
try {
await FFmpegKitConfig.init();
return FFmpegKitPlatform.instance
.ffmpegSessionGetAllStatistics(this.getSessionId(), waitTimeout)
.then((allStatistics) {
if (allStatistics == null) {
return List.empty();
} else {
return allStatistics
.map((dynamic statisticsObject) =>
FFmpegKitFactory.mapToStatistics(
statisticsObject as Map<dynamic, dynamic>))
.toList();
}
});
} on PlatformException catch (e, stack) {
print("Plugin getAllStatistics error: ${e.message}");
return Future.error("getAllStatistics failed.", stack);
}
}
/// Returns all statistics entries delivered for this session. Note that if
/// there are asynchronous statistics that are not delivered yet, this method
/// will not wait for them and will return immediately.
Future<List<Statistics>> getStatistics() async {
try {
await FFmpegKitConfig.init();
return FFmpegKitPlatform.instance
.ffmpegSessionGetStatistics(this.getSessionId())
.then((statistics) {
if (statistics == null) {
return List.empty();
} else {
return statistics
.map((dynamic statisticsObject) =>
FFmpegKitFactory.mapToStatistics(
statisticsObject as Map<dynamic, dynamic>))
.toList();
}
});
} on PlatformException catch (e, stack) {
print("Plugin getStatistics error: ${e.message}");
return Future.error("getStatistics failed.", stack);
}
}
/// Returns the last received statistics entry.
Future<Statistics?> getLastReceivedStatistics() async =>
this.getStatistics().then((statistics) {
if (statistics.length > 0) {
return statistics[statistics.length - 1];
} else {
return null;
}
});
bool isFFmpeg() => true;
bool isFFprobe() => false;
bool isMediaInformation() => false;
}