mirror of
https://github.com/vector-im/element-ios.git
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100 lines
4.3 KiB
Swift
100 lines
4.3 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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import ffmpegkit
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enum VoiceMessageAudioConverterError: Error {
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case generic(String)
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case cancelled
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}
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struct VoiceMessageAudioConverter {
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static func convertToOpusOgg(sourceURL: URL, destinationURL: URL, completion: @escaping (Result<Void, VoiceMessageAudioConverterError>) -> Void) {
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let command = "-hide_banner -y -i \"\(sourceURL.path)\" -c:a libopus -b:a 24k \"\(destinationURL.path)\""
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executeCommand(command, completion: completion)
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}
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static func convertToMPEG4AAC(sourceURL: URL, destinationURL: URL, completion: @escaping (Result<Void, VoiceMessageAudioConverterError>) -> Void) {
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let command = "-hide_banner -y -i \"\(sourceURL.path)\" -c:a aac_at \"\(destinationURL.path)\""
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executeCommand(command, completion: completion)
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}
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static func mediaDurationAt(_ sourceURL: URL, completion: @escaping (Result<TimeInterval, VoiceMessageAudioConverterError>) -> Void) {
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FFprobeKit.getMediaInformationAsync(sourceURL.path) { session in
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guard let session = session else {
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completion(.failure(.generic("Invalid session")))
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return
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}
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guard let returnCode = session.getReturnCode() else {
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completion(.failure(.generic("Invalid return code")))
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return
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}
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DispatchQueue.main.async {
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if returnCode.isValueSuccess() {
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let mediaInfo = session.getMediaInformation()
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if let duration = try? TimeInterval(value: mediaInfo?.getDuration() ?? "0") {
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completion(.success(duration))
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} else {
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completion(.failure(.generic("Failed to get media duration")))
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}
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} else if returnCode.isValueCancel() {
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completion(.failure(.cancelled))
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} else {
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completion(.failure(.generic(String(returnCode.getValue()))))
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MXLog.error("""
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getMediaInformationAsync failed with state: \(String(describing: FFmpegKitConfig.sessionState(toString: session.getState()))), \
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returnCode: \(String(describing: returnCode)), \
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stackTrace: \(String(describing: session.getFailStackTrace()))
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""")
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}
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}
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}
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}
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static private func executeCommand(_ command: String, completion: @escaping (Result<Void, VoiceMessageAudioConverterError>) -> Void) {
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FFmpegKitConfig.setLogLevel(0)
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FFmpegKit.executeAsync(command) { session in
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guard let session = session else {
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completion(.failure(.generic("Invalid session")))
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return
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}
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guard let returnCode = session.getReturnCode() else {
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completion(.failure(.generic("Invalid return code")))
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return
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}
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DispatchQueue.main.async {
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if returnCode.isValueSuccess() {
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completion(.success(()))
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} else if returnCode.isValueCancel() {
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completion(.failure(.cancelled))
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} else {
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completion(.failure(.generic(String(returnCode.getValue()))))
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MXLog.error("""
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Failed converting voice message with state: \(String(describing: FFmpegKitConfig.sessionState(toString: session.getState()))), \
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returnCode: \(String(describing: returnCode)), \
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stackTrace: \(String(describing: session.getFailStackTrace()))
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""")
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}
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}
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}
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}
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}
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