mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
1284 lines
49 KiB
Swift
1284 lines
49 KiB
Swift
import Foundation
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import UIKit
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import SwiftSignalKit
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import CryptoUtils
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import ManagedFile
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import Compression
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private func alignUp(size: Int, align: Int) -> Int {
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precondition(((align - 1) & align) == 0, "Align must be a power of two")
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let alignmentMask = align - 1
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return (size + alignmentMask) & ~alignmentMask
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}
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public final class AnimationCacheItemFrame {
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public enum RequestedFormat {
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case rgba
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case yuva(rowAlignment: Int)
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}
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public final class Plane {
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public let data: Data
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public let width: Int
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public let height: Int
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public let bytesPerRow: Int
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public init(data: Data, width: Int, height: Int, bytesPerRow: Int) {
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self.data = data
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self.width = width
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self.height = height
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self.bytesPerRow = bytesPerRow
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}
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}
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public enum Format {
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case rgba(data: Data, width: Int, height: Int, bytesPerRow: Int)
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case yuva(y: Plane, u: Plane, v: Plane, a: Plane)
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}
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public let format: Format
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public let duration: Double
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public init(format: Format, duration: Double) {
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self.format = format
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self.duration = duration
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}
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}
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public final class AnimationCacheItem {
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public let numFrames: Int
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private let getFrameImpl: (Int, AnimationCacheItemFrame.RequestedFormat) -> AnimationCacheItemFrame?
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private let getFrameIndexImpl: (Double) -> Int
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private let getFrameDurationImpl: (Int) -> Double?
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public init(numFrames: Int, getFrame: @escaping (Int, AnimationCacheItemFrame.RequestedFormat) -> AnimationCacheItemFrame?, getFrameIndexImpl: @escaping (Double) -> Int, getFrameDurationImpl: @escaping (Int) -> Double?) {
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self.numFrames = numFrames
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self.getFrameImpl = getFrame
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self.getFrameIndexImpl = getFrameIndexImpl
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self.getFrameDurationImpl = getFrameDurationImpl
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}
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public func getFrameDuration(index: Int) -> Double? {
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return self.getFrameDurationImpl(index)
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}
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public func getFrame(index: Int, requestedFormat: AnimationCacheItemFrame.RequestedFormat) -> AnimationCacheItemFrame? {
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return self.getFrameImpl(index, requestedFormat)
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}
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public func getFrame(at duration: Double, requestedFormat: AnimationCacheItemFrame.RequestedFormat) -> AnimationCacheItemFrame? {
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let index = self.getFrameIndexImpl(duration)
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return self.getFrameImpl(index, requestedFormat)
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}
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}
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public struct AnimationCacheItemDrawingSurface {
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public let argb: UnsafeMutablePointer<UInt8>
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public let width: Int
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public let height: Int
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public let bytesPerRow: Int
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public let length: Int
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init(
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argb: UnsafeMutablePointer<UInt8>,
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width: Int,
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height: Int,
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bytesPerRow: Int,
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length: Int
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) {
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self.argb = argb
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self.width = width
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self.height = height
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self.bytesPerRow = bytesPerRow
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self.length = length
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}
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}
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public protocol AnimationCacheItemWriter: AnyObject {
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var queue: Queue { get }
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var isCancelled: Bool { get }
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func add(with drawingBlock: (AnimationCacheItemDrawingSurface) -> Void, proposedWidth: Int, proposedHeight: Int, duration: Double)
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func finish()
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}
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public final class AnimationCacheItemResult {
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public let item: AnimationCacheItem?
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public let isFinal: Bool
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public init(item: AnimationCacheItem?, isFinal: Bool) {
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self.item = item
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self.isFinal = isFinal
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}
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}
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public protocol AnimationCache: AnyObject {
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func get(sourceId: String, size: CGSize, fetch: @escaping (CGSize, AnimationCacheItemWriter) -> Disposable) -> Signal<AnimationCacheItemResult, NoError>
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func getFirstFrameSynchronously(sourceId: String, size: CGSize) -> AnimationCacheItem?
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func getFirstFrame(queue: Queue, sourceId: String, size: CGSize, completion: @escaping (AnimationCacheItem?) -> Void) -> Disposable
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}
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private func md5Hash(_ string: String) -> String {
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let hashData = string.data(using: .utf8)!.withUnsafeBytes { bytes -> Data in
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return CryptoMD5(bytes.baseAddress!, Int32(bytes.count))
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}
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return hashData.withUnsafeBytes { bytes -> String in
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let uintBytes = bytes.baseAddress!.assumingMemoryBound(to: UInt8.self)
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return String(format: "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", uintBytes[0], uintBytes[1], uintBytes[2], uintBytes[3], uintBytes[4], uintBytes[5], uintBytes[6], uintBytes[7], uintBytes[8], uintBytes[9], uintBytes[10], uintBytes[11], uintBytes[12], uintBytes[13], uintBytes[14], uintBytes[15])
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}
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}
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private func itemSubpath(hashString: String, width: Int, height: Int) -> (directory: String, fileName: String) {
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assert(hashString.count == 32)
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var directory = ""
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for i in 0 ..< 1 {
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if !directory.isEmpty {
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directory.append("/")
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}
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directory.append(String(hashString[hashString.index(hashString.startIndex, offsetBy: i * 2) ..< hashString.index(hashString.startIndex, offsetBy: (i + 1) * 2)]))
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}
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return (directory, "\(hashString)_\(width)x\(height)")
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}
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private func roundUp(_ numToRound: Int, multiple: Int) -> Int {
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if multiple == 0 {
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return numToRound
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}
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let remainder = numToRound % multiple
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if remainder == 0 {
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return numToRound;
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}
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return numToRound + multiple - remainder
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}
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private func compressData(data: Data, addSizeHeader: Bool = false) -> Data? {
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let algorithm: compression_algorithm = COMPRESSION_LZFSE
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let scratchData = malloc(compression_encode_scratch_buffer_size(algorithm))!
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defer {
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free(scratchData)
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}
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let headerSize = addSizeHeader ? 4 : 0
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var compressedData = Data(count: headerSize + data.count + 16 * 1024)
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let resultSize = compressedData.withUnsafeMutableBytes { buffer -> Int in
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guard let bytes = buffer.baseAddress?.assumingMemoryBound(to: UInt8.self) else {
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return 0
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}
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if addSizeHeader {
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var decompressedSize: UInt32 = UInt32(data.count)
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memcpy(bytes, &decompressedSize, 4)
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}
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return data.withUnsafeBytes { sourceBuffer -> Int in
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return compression_encode_buffer(bytes.advanced(by: headerSize), buffer.count - headerSize, sourceBuffer.baseAddress!.assumingMemoryBound(to: UInt8.self), sourceBuffer.count, scratchData, algorithm)
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}
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}
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if resultSize <= 0 {
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return nil
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}
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compressedData.count = headerSize + resultSize
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return compressedData
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}
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private func decompressData(data: Data, range: Range<Int>, decompressedSize: Int) -> Data? {
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let algorithm: compression_algorithm = COMPRESSION_LZFSE
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let scratchData = malloc(compression_decode_scratch_buffer_size(algorithm))!
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defer {
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free(scratchData)
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}
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var decompressedFrameData = Data(count: decompressedSize)
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let resultSize = decompressedFrameData.withUnsafeMutableBytes { buffer -> Int in
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guard let bytes = buffer.baseAddress?.assumingMemoryBound(to: UInt8.self) else {
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return 0
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}
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return data.withUnsafeBytes { sourceBuffer -> Int in
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return compression_decode_buffer(bytes, buffer.count, sourceBuffer.baseAddress!.assumingMemoryBound(to: UInt8.self).advanced(by: range.lowerBound), range.upperBound - range.lowerBound, scratchData, algorithm)
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}
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}
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if resultSize <= 0 {
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return nil
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}
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if decompressedFrameData.count != resultSize {
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decompressedFrameData.count = resultSize
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}
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return decompressedFrameData
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}
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private final class AnimationCacheItemWriterInternal {
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struct CompressedResult {
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var path: String
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}
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private struct FrameMetadata {
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var offset: Int
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var length: Int
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var duration: Double
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}
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var isCancelled: Bool = false
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private let decompressedPath: String
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private let compressedPath: String
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private var file: ManagedFile?
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private var currentYUVASurface: ImageYUVA420?
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private var currentDctData: DctData?
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private var currentDctCoefficients: DctCoefficientsYUVA420?
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private var contentLengthOffset: Int?
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private var isFailed: Bool = false
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private var isFinished: Bool = false
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private var frames: [FrameMetadata] = []
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private var contentLength: Int = 0
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private let dctQuality: Int
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init?(allocateTempFile: @escaping () -> String) {
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self.dctQuality = 70
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self.decompressedPath = allocateTempFile()
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self.compressedPath = allocateTempFile()
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guard let file = ManagedFile(queue: nil, path: self.decompressedPath, mode: .readwrite) else {
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return nil
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}
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self.file = file
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}
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func add(with drawingBlock: (ImageYUVA420) -> Void, proposedWidth: Int, proposedHeight: Int, duration: Double) {
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if self.isFailed || self.isFinished {
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return
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}
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guard !self.isFailed, !self.isFinished, let file = self.file else {
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return
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}
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let width = roundUp(proposedWidth, multiple: 16)
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let height = roundUp(proposedWidth, multiple: 16)
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var isFirstFrame = false
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let yuvaSurface: ImageYUVA420
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if let current = self.currentYUVASurface {
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if current.yPlane.width == width && current.yPlane.height == height {
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yuvaSurface = current
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} else {
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self.isFailed = true
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return
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}
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} else {
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isFirstFrame = true
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yuvaSurface = ImageYUVA420(width: width, height: height, rowAlignment: nil)
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self.currentYUVASurface = yuvaSurface
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}
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let dctCoefficients: DctCoefficientsYUVA420
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if let current = self.currentDctCoefficients {
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if current.yPlane.width == width && current.yPlane.height == height {
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dctCoefficients = current
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} else {
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self.isFailed = true
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return
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}
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} else {
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dctCoefficients = DctCoefficientsYUVA420(width: width, height: height)
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self.currentDctCoefficients = dctCoefficients
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}
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let dctData: DctData
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if let current = self.currentDctData, current.quality == self.dctQuality {
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dctData = current
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} else {
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dctData = DctData(quality: self.dctQuality)
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self.currentDctData = dctData
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}
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drawingBlock(yuvaSurface)
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yuvaSurface.dct(dctData: dctData, target: dctCoefficients)
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if isFirstFrame {
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file.write(2 as UInt32)
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file.write(UInt32(dctCoefficients.yPlane.width))
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file.write(UInt32(dctCoefficients.yPlane.height))
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file.write(UInt32(dctData.quality))
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self.contentLengthOffset = Int(file.position())
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file.write(0 as UInt32)
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}
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let framePosition = Int(file.position())
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assert(framePosition >= 0)
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var frameLength = 0
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for i in 0 ..< 4 {
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let dctPlane: DctCoefficientPlane
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switch i {
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case 0:
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dctPlane = dctCoefficients.yPlane
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case 1:
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dctPlane = dctCoefficients.uPlane
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case 2:
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dctPlane = dctCoefficients.vPlane
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case 3:
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dctPlane = dctCoefficients.aPlane
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default:
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preconditionFailure()
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}
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dctPlane.data.withUnsafeBytes { bytes in
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let _ = file.write(bytes.baseAddress!.assumingMemoryBound(to: UInt8.self), count: bytes.count)
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}
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frameLength += dctPlane.data.count
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}
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self.frames.append(FrameMetadata(offset: framePosition, length: frameLength, duration: duration))
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self.contentLength += frameLength
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}
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func finish() -> CompressedResult? {
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var shouldComplete = false
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outer: for _ in 0 ..< 1 {
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if !self.isFinished {
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self.isFinished = true
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shouldComplete = true
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guard let contentLengthOffset = self.contentLengthOffset, let file = self.file else {
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self.isFailed = true
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break outer
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}
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assert(contentLengthOffset >= 0)
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let metadataPosition = file.position()
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file.seek(position: Int64(contentLengthOffset))
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file.write(UInt32(self.contentLength))
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file.seek(position: metadataPosition)
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file.write(UInt32(self.frames.count))
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for frame in self.frames {
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file.write(UInt32(frame.offset))
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file.write(UInt32(frame.length))
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file.write(Float32(frame.duration))
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}
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if !self.frames.isEmpty {
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} else {
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self.isFailed = true
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break outer
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}
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if !self.isFailed {
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self.file = nil
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file._unsafeClose()
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guard let uncompressedData = try? Data(contentsOf: URL(fileURLWithPath: self.decompressedPath), options: .alwaysMapped) else {
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self.isFailed = true
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break outer
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}
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guard let compressedData = compressData(data: uncompressedData) else {
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self.isFailed = true
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break outer
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}
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guard let compressedFile = ManagedFile(queue: nil, path: self.compressedPath, mode: .readwrite) else {
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self.isFailed = true
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break outer
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}
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compressedFile.write(Int32(uncompressedData.count))
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let _ = compressedFile.write(compressedData)
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compressedFile._unsafeClose()
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}
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}
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}
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if shouldComplete {
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let _ = try? FileManager.default.removeItem(atPath: self.decompressedPath)
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if !self.isFailed {
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return CompressedResult(path: self.compressedPath)
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} else {
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let _ = try? FileManager.default.removeItem(atPath: self.compressedPath)
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return nil
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}
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} else {
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return nil
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}
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}
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}
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private final class AnimationCacheItemWriterImpl: AnimationCacheItemWriter {
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struct CompressedResult {
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var animationPath: String
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var firstFramePath: String
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}
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private struct FrameMetadata {
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var offset: Int
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var length: Int
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var duration: Double
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}
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let queue: Queue
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var isCancelled: Bool = false
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private let decompressedPath: String
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private let compressedPath: String
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private let firstFramePath: String
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private var file: ManagedFile?
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private let completion: (CompressedResult?) -> Void
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private var currentSurface: ImageARGB?
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private var currentYUVASurface: ImageYUVA420?
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private var currentDctData: DctData?
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private var currentDctCoefficients: DctCoefficientsYUVA420?
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private var contentLengthOffset: Int?
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private var isFailed: Bool = false
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private var isFinished: Bool = false
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private var frames: [FrameMetadata] = []
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private var contentLength: Int = 0
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private let dctQuality: Int
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private let lock = Lock()
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init?(queue: Queue, allocateTempFile: @escaping () -> String, completion: @escaping (CompressedResult?) -> Void) {
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self.dctQuality = 70
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self.queue = queue
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self.decompressedPath = allocateTempFile()
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self.compressedPath = allocateTempFile()
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self.firstFramePath = allocateTempFile()
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guard let file = ManagedFile(queue: nil, path: self.decompressedPath, mode: .readwrite) else {
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return nil
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}
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self.file = file
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self.completion = completion
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}
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func add(with drawingBlock: (AnimationCacheItemDrawingSurface) -> Void, proposedWidth: Int, proposedHeight: Int, duration: Double) {
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if self.isFailed || self.isFinished {
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return
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}
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self.lock.locked {
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guard !self.isFailed, !self.isFinished, let file = self.file else {
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return
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}
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let width = roundUp(proposedWidth, multiple: 16)
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let height = roundUp(proposedWidth, multiple: 16)
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var isFirstFrame = false
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let surface: ImageARGB
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if let current = self.currentSurface {
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if current.argbPlane.width == width && current.argbPlane.height == height {
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surface = current
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} else {
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self.isFailed = true
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return
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}
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} else {
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isFirstFrame = true
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surface = ImageARGB(width: width, height: height, rowAlignment: 32)
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self.currentSurface = surface
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}
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let yuvaSurface: ImageYUVA420
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if let current = self.currentYUVASurface {
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if current.yPlane.width == width && current.yPlane.height == height {
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yuvaSurface = current
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} else {
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self.isFailed = true
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return
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}
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} else {
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yuvaSurface = ImageYUVA420(width: width, height: height, rowAlignment: nil)
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self.currentYUVASurface = yuvaSurface
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}
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let dctCoefficients: DctCoefficientsYUVA420
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if let current = self.currentDctCoefficients {
|
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if current.yPlane.width == width && current.yPlane.height == height {
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dctCoefficients = current
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} else {
|
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self.isFailed = true
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return
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}
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} else {
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dctCoefficients = DctCoefficientsYUVA420(width: width, height: height)
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self.currentDctCoefficients = dctCoefficients
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}
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|
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let dctData: DctData
|
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if let current = self.currentDctData, current.quality == self.dctQuality {
|
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dctData = current
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} else {
|
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dctData = DctData(quality: self.dctQuality)
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self.currentDctData = dctData
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}
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|
|
surface.argbPlane.data.withUnsafeMutableBytes { bytes -> Void in
|
|
drawingBlock(AnimationCacheItemDrawingSurface(
|
|
argb: bytes.baseAddress!.assumingMemoryBound(to: UInt8.self),
|
|
width: width,
|
|
height: height,
|
|
bytesPerRow: surface.argbPlane.bytesPerRow,
|
|
length: bytes.count
|
|
))
|
|
}
|
|
|
|
surface.toYUVA420(target: yuvaSurface)
|
|
yuvaSurface.dct(dctData: dctData, target: dctCoefficients)
|
|
|
|
if isFirstFrame {
|
|
file.write(2 as UInt32)
|
|
|
|
file.write(UInt32(dctCoefficients.yPlane.width))
|
|
file.write(UInt32(dctCoefficients.yPlane.height))
|
|
file.write(UInt32(dctData.quality))
|
|
|
|
self.contentLengthOffset = Int(file.position())
|
|
file.write(0 as UInt32)
|
|
}
|
|
|
|
let framePosition = Int(file.position())
|
|
assert(framePosition >= 0)
|
|
var frameLength = 0
|
|
|
|
for i in 0 ..< 4 {
|
|
let dctPlane: DctCoefficientPlane
|
|
switch i {
|
|
case 0:
|
|
dctPlane = dctCoefficients.yPlane
|
|
case 1:
|
|
dctPlane = dctCoefficients.uPlane
|
|
case 2:
|
|
dctPlane = dctCoefficients.vPlane
|
|
case 3:
|
|
dctPlane = dctCoefficients.aPlane
|
|
default:
|
|
preconditionFailure()
|
|
}
|
|
|
|
dctPlane.data.withUnsafeBytes { bytes in
|
|
let _ = file.write(bytes.baseAddress!.assumingMemoryBound(to: UInt8.self), count: bytes.count)
|
|
}
|
|
frameLength += dctPlane.data.count
|
|
}
|
|
|
|
self.frames.append(FrameMetadata(offset: framePosition, length: frameLength, duration: duration))
|
|
|
|
self.contentLength += frameLength
|
|
}
|
|
}
|
|
|
|
func finish() {
|
|
var shouldComplete = false
|
|
self.lock.locked {
|
|
if !self.isFinished {
|
|
self.isFinished = true
|
|
shouldComplete = true
|
|
|
|
guard let contentLengthOffset = self.contentLengthOffset, let file = self.file else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
assert(contentLengthOffset >= 0)
|
|
|
|
let metadataPosition = file.position()
|
|
file.seek(position: Int64(contentLengthOffset))
|
|
file.write(UInt32(self.contentLength))
|
|
|
|
file.seek(position: metadataPosition)
|
|
file.write(UInt32(self.frames.count))
|
|
for frame in self.frames {
|
|
file.write(UInt32(frame.offset))
|
|
file.write(UInt32(frame.length))
|
|
file.write(Float32(frame.duration))
|
|
}
|
|
|
|
if !self.frames.isEmpty, let dctCoefficients = self.currentDctCoefficients, let dctData = self.currentDctData {
|
|
var firstFrameData = Data(capacity: 4 * 5 + self.frames[0].length)
|
|
|
|
writeUInt32(data: &firstFrameData, value: 2 as UInt32)
|
|
writeUInt32(data: &firstFrameData, value: UInt32(dctCoefficients.yPlane.width))
|
|
writeUInt32(data: &firstFrameData, value: UInt32(dctCoefficients.yPlane.height))
|
|
writeUInt32(data: &firstFrameData, value: UInt32(dctData.quality))
|
|
|
|
writeUInt32(data: &firstFrameData, value: UInt32(self.frames[0].length))
|
|
let firstFrameStart = 4 * 5
|
|
|
|
file.seek(position: Int64(self.frames[0].offset))
|
|
firstFrameData.count += self.frames[0].length
|
|
firstFrameData.withUnsafeMutableBytes { bytes in
|
|
let _ = file.read(bytes.baseAddress!.advanced(by: 4 * 5), self.frames[0].length)
|
|
}
|
|
|
|
writeUInt32(data: &firstFrameData, value: UInt32(1))
|
|
writeUInt32(data: &firstFrameData, value: UInt32(firstFrameStart))
|
|
writeUInt32(data: &firstFrameData, value: UInt32(self.frames[0].length))
|
|
writeFloat32(data: &firstFrameData, value: Float32(1.0))
|
|
|
|
guard let compressedFirstFrameData = compressData(data: firstFrameData, addSizeHeader: true) else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
guard let _ = try? compressedFirstFrameData.write(to: URL(fileURLWithPath: self.firstFramePath)) else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
} else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
|
|
if !self.isFailed {
|
|
self.file = nil
|
|
|
|
file._unsafeClose()
|
|
|
|
guard let uncompressedData = try? Data(contentsOf: URL(fileURLWithPath: self.decompressedPath), options: .alwaysMapped) else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
guard let compressedData = compressData(data: uncompressedData) else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
guard let compressedFile = ManagedFile(queue: nil, path: self.compressedPath, mode: .readwrite) else {
|
|
self.isFailed = true
|
|
return
|
|
}
|
|
compressedFile.write(Int32(uncompressedData.count))
|
|
let _ = compressedFile.write(compressedData)
|
|
compressedFile._unsafeClose()
|
|
}
|
|
}
|
|
}
|
|
|
|
if shouldComplete {
|
|
let _ = try? FileManager.default.removeItem(atPath: self.decompressedPath)
|
|
|
|
if !self.isFailed {
|
|
self.completion(CompressedResult(
|
|
animationPath: self.compressedPath,
|
|
firstFramePath: self.firstFramePath
|
|
))
|
|
} else {
|
|
let _ = try? FileManager.default.removeItem(atPath: self.compressedPath)
|
|
let _ = try? FileManager.default.removeItem(atPath: self.firstFramePath)
|
|
self.completion(nil)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private final class AnimationCacheItemAccessor {
|
|
struct FrameInfo {
|
|
let range: Range<Int>
|
|
let duration: Double
|
|
}
|
|
|
|
private let data: Data
|
|
private let frameMapping: [Int: FrameInfo]
|
|
private let durationMapping: [Double]
|
|
private let totalDuration: Double
|
|
|
|
private var currentYUVASurface: ImageYUVA420?
|
|
private var currentDctData: DctData
|
|
private var currentDctCoefficients: DctCoefficientsYUVA420
|
|
|
|
init(data: Data, frameMapping: [FrameInfo], width: Int, height: Int, dctQuality: Int) {
|
|
self.data = data
|
|
|
|
var resultFrameMapping: [Int: FrameInfo] = [:]
|
|
var durationMapping: [Double] = []
|
|
var totalDuration: Double = 0.0
|
|
|
|
for i in 0 ..< frameMapping.count {
|
|
let frame = frameMapping[i]
|
|
resultFrameMapping[i] = frame
|
|
totalDuration += frame.duration
|
|
durationMapping.append(totalDuration)
|
|
}
|
|
|
|
self.frameMapping = resultFrameMapping
|
|
self.durationMapping = durationMapping
|
|
self.totalDuration = totalDuration
|
|
|
|
self.currentDctData = DctData(quality: dctQuality)
|
|
self.currentDctCoefficients = DctCoefficientsYUVA420(width: width, height: height)
|
|
}
|
|
|
|
func getFrame(index: Int, requestedFormat: AnimationCacheItemFrame.RequestedFormat) -> AnimationCacheItemFrame? {
|
|
guard let frameInfo = self.frameMapping[index] else {
|
|
return nil
|
|
}
|
|
|
|
var frameDataOffset = 0
|
|
let frameLength = frameInfo.range.upperBound - frameInfo.range.lowerBound
|
|
for i in 0 ..< 4 {
|
|
let dctPlane: DctCoefficientPlane
|
|
switch i {
|
|
case 0:
|
|
dctPlane = self.currentDctCoefficients.yPlane
|
|
case 1:
|
|
dctPlane = self.currentDctCoefficients.uPlane
|
|
case 2:
|
|
dctPlane = self.currentDctCoefficients.vPlane
|
|
case 3:
|
|
dctPlane = self.currentDctCoefficients.aPlane
|
|
default:
|
|
preconditionFailure()
|
|
}
|
|
|
|
if frameDataOffset + dctPlane.data.count > frameLength {
|
|
break
|
|
}
|
|
|
|
dctPlane.data.withUnsafeMutableBytes { targetBuffer -> Void in
|
|
self.data.copyBytes(to: targetBuffer.baseAddress!.assumingMemoryBound(to: UInt8.self), from: (frameInfo.range.lowerBound + frameDataOffset) ..< (frameInfo.range.lowerBound + frameDataOffset + targetBuffer.count))
|
|
}
|
|
|
|
frameDataOffset += dctPlane.data.count
|
|
}
|
|
|
|
let yuvaSurface: ImageYUVA420
|
|
switch requestedFormat {
|
|
case .rgba:
|
|
if let currentYUVASurface = self.currentYUVASurface {
|
|
yuvaSurface = currentYUVASurface
|
|
} else {
|
|
yuvaSurface = ImageYUVA420(width: self.currentDctCoefficients.yPlane.width, height: self.currentDctCoefficients.yPlane.height, rowAlignment: nil)
|
|
}
|
|
case let .yuva(preferredRowAlignment):
|
|
yuvaSurface = ImageYUVA420(width: self.currentDctCoefficients.yPlane.width, height: self.currentDctCoefficients.yPlane.height, rowAlignment: preferredRowAlignment)
|
|
}
|
|
|
|
self.currentDctCoefficients.idct(dctData: self.currentDctData, target: yuvaSurface)
|
|
|
|
switch requestedFormat {
|
|
case .rgba:
|
|
let currentSurface = ImageARGB(width: yuvaSurface.yPlane.width, height: yuvaSurface.yPlane.height, rowAlignment: 32)
|
|
yuvaSurface.toARGB(target: currentSurface)
|
|
self.currentYUVASurface = yuvaSurface
|
|
|
|
return AnimationCacheItemFrame(format: .rgba(data: currentSurface.argbPlane.data, width: currentSurface.argbPlane.width, height: currentSurface.argbPlane.height, bytesPerRow: currentSurface.argbPlane.bytesPerRow), duration: frameInfo.duration)
|
|
case .yuva:
|
|
return AnimationCacheItemFrame(
|
|
format: .yuva(
|
|
y: AnimationCacheItemFrame.Plane(
|
|
data: yuvaSurface.yPlane.data,
|
|
width: yuvaSurface.yPlane.width,
|
|
height: yuvaSurface.yPlane.height,
|
|
bytesPerRow: yuvaSurface.yPlane.bytesPerRow
|
|
),
|
|
u: AnimationCacheItemFrame.Plane(
|
|
data: yuvaSurface.uPlane.data,
|
|
width: yuvaSurface.uPlane.width,
|
|
height: yuvaSurface.uPlane.height,
|
|
bytesPerRow: yuvaSurface.uPlane.bytesPerRow
|
|
),
|
|
v: AnimationCacheItemFrame.Plane(
|
|
data: yuvaSurface.vPlane.data,
|
|
width: yuvaSurface.vPlane.width,
|
|
height: yuvaSurface.vPlane.height,
|
|
bytesPerRow: yuvaSurface.vPlane.bytesPerRow
|
|
),
|
|
a: AnimationCacheItemFrame.Plane(
|
|
data: yuvaSurface.aPlane.data,
|
|
width: yuvaSurface.aPlane.width,
|
|
height: yuvaSurface.aPlane.height,
|
|
bytesPerRow: yuvaSurface.aPlane.bytesPerRow
|
|
)
|
|
),
|
|
duration: frameInfo.duration
|
|
)
|
|
}
|
|
}
|
|
|
|
func getFrameIndex(duration: Double) -> Int {
|
|
if self.totalDuration == 0.0 {
|
|
return 0
|
|
}
|
|
if self.durationMapping.count <= 1 {
|
|
return 0
|
|
}
|
|
let normalizedDuration = duration.truncatingRemainder(dividingBy: self.totalDuration)
|
|
for i in 1 ..< self.durationMapping.count {
|
|
if normalizedDuration < self.durationMapping[i] {
|
|
return i - 1
|
|
}
|
|
}
|
|
return self.durationMapping.count - 1
|
|
}
|
|
|
|
func getFrameDuration(index: Int) -> Double? {
|
|
if index < self.durationMapping.count {
|
|
return self.durationMapping[index]
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
}
|
|
|
|
private func readUInt32(data: Data, offset: Int) -> UInt32 {
|
|
var value: UInt32 = 0
|
|
withUnsafeMutableBytes(of: &value, { bytes -> Void in
|
|
data.withUnsafeBytes { dataBytes -> Void in
|
|
memcpy(bytes.baseAddress!, dataBytes.baseAddress!.advanced(by: offset), 4)
|
|
}
|
|
})
|
|
|
|
return value
|
|
}
|
|
|
|
private func readFloat32(data: Data, offset: Int) -> Float32 {
|
|
var value: Float32 = 0
|
|
withUnsafeMutableBytes(of: &value, { bytes -> Void in
|
|
data.withUnsafeBytes { dataBytes -> Void in
|
|
memcpy(bytes.baseAddress!, dataBytes.baseAddress!.advanced(by: offset), 4)
|
|
}
|
|
})
|
|
|
|
return value
|
|
}
|
|
|
|
private func writeUInt32(data: inout Data, value: UInt32) {
|
|
var value: UInt32 = value
|
|
withUnsafeBytes(of: &value, { bytes -> Void in
|
|
data.count += 4
|
|
data.withUnsafeMutableBytes { dataBytes -> Void in
|
|
memcpy(dataBytes.baseAddress!.advanced(by: dataBytes.count - 4), bytes.baseAddress!, 4)
|
|
}
|
|
})
|
|
}
|
|
|
|
private func writeFloat32(data: inout Data, value: Float32) {
|
|
var value: Float32 = value
|
|
withUnsafeBytes(of: &value, { bytes -> Void in
|
|
data.count += 4
|
|
data.withUnsafeMutableBytes { dataBytes -> Void in
|
|
memcpy(dataBytes.baseAddress!.advanced(by: dataBytes.count - 4), bytes.baseAddress!, 4)
|
|
}
|
|
})
|
|
}
|
|
|
|
private func loadItem(path: String) -> AnimationCacheItem? {
|
|
guard let compressedData = try? Data(contentsOf: URL(fileURLWithPath: path), options: .alwaysMapped) else {
|
|
return nil
|
|
}
|
|
|
|
if compressedData.count < 4 {
|
|
return nil
|
|
}
|
|
let decompressedSize = readUInt32(data: compressedData, offset: 0)
|
|
|
|
if decompressedSize <= 0 || decompressedSize > 40 * 1024 * 1024 {
|
|
return nil
|
|
}
|
|
guard let data = decompressData(data: compressedData, range: 4 ..< compressedData.count, decompressedSize: Int(decompressedSize)) else {
|
|
return nil
|
|
}
|
|
|
|
let dataLength = data.count
|
|
|
|
var offset = 0
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let formatVersion = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
if formatVersion != 2 {
|
|
return nil
|
|
}
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let width = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let height = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let dctQuality = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let frameDataLength = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
offset += Int(frameDataLength)
|
|
|
|
guard dataLength >= offset + 4 else {
|
|
return nil
|
|
}
|
|
let numFrames = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
var frameMapping: [AnimationCacheItemAccessor.FrameInfo] = []
|
|
for _ in 0 ..< Int(numFrames) {
|
|
guard dataLength >= offset + 4 + 4 + 4 else {
|
|
return nil
|
|
}
|
|
|
|
let frameStart = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
let frameLength = readUInt32(data: data, offset: offset)
|
|
offset += 4
|
|
let frameDuration = readFloat32(data: data, offset: offset)
|
|
offset += 4
|
|
|
|
frameMapping.append(AnimationCacheItemAccessor.FrameInfo(range: Int(frameStart) ..< Int(frameStart + frameLength), duration: Double(frameDuration)))
|
|
}
|
|
|
|
let itemAccessor = AnimationCacheItemAccessor(data: data, frameMapping: frameMapping, width: Int(width), height: Int(height), dctQuality: Int(dctQuality))
|
|
|
|
return AnimationCacheItem(numFrames: Int(numFrames), getFrame: { index, requestedFormat in
|
|
return itemAccessor.getFrame(index: index, requestedFormat: requestedFormat)
|
|
}, getFrameIndexImpl: { duration in
|
|
return itemAccessor.getFrameIndex(duration: duration)
|
|
}, getFrameDurationImpl: { index in
|
|
return itemAccessor.getFrameDuration(index: index)
|
|
})
|
|
}
|
|
|
|
private func adaptItemFromHigherResolution(itemPath: String, width: Int, height: Int, itemDirectoryPath: String, higherResolutionPath: String, allocateTempFile: @escaping () -> String) -> AnimationCacheItem? {
|
|
guard let higherResolutionItem = loadItem(path: higherResolutionPath) else {
|
|
return nil
|
|
}
|
|
guard let writer = AnimationCacheItemWriterInternal(allocateTempFile: allocateTempFile) else {
|
|
return nil
|
|
}
|
|
|
|
for i in 0 ..< higherResolutionItem.numFrames {
|
|
guard let duration = higherResolutionItem.getFrameDuration(index: i) else {
|
|
break
|
|
}
|
|
writer.add(with: { yuva in
|
|
guard let frame = higherResolutionItem.getFrame(index: i, requestedFormat: .yuva(rowAlignment: yuva.yPlane.rowAlignment)) else {
|
|
return
|
|
}
|
|
switch frame.format {
|
|
case .rgba:
|
|
return
|
|
case let .yuva(y, u, v, a):
|
|
yuva.yPlane.copyScaled(fromPlane: y)
|
|
yuva.uPlane.copyScaled(fromPlane: u)
|
|
yuva.vPlane.copyScaled(fromPlane: v)
|
|
yuva.aPlane.copyScaled(fromPlane: a)
|
|
}
|
|
}, proposedWidth: width, proposedHeight: height, duration: duration)
|
|
}
|
|
|
|
guard let result = writer.finish() else {
|
|
return nil
|
|
}
|
|
guard let _ = try? FileManager.default.createDirectory(at: URL(fileURLWithPath: itemDirectoryPath), withIntermediateDirectories: true, attributes: nil) else {
|
|
return nil
|
|
}
|
|
let _ = try? FileManager.default.removeItem(atPath: itemPath)
|
|
guard let _ = try? FileManager.default.moveItem(atPath: result.path, toPath: itemPath) else {
|
|
return nil
|
|
}
|
|
guard let item = loadItem(path: itemPath) else {
|
|
return nil
|
|
}
|
|
return item
|
|
}
|
|
|
|
private func findHigherResolutionFileForAdaptation(itemDirectoryPath: String, baseName: String, baseSuffix: String, width: Int, height: Int) -> String? {
|
|
var candidates: [(path: String, width: Int, height: Int)] = []
|
|
if let enumerator = FileManager.default.enumerator(at: URL(fileURLWithPath: itemDirectoryPath), includingPropertiesForKeys: nil, options: .skipsSubdirectoryDescendants, errorHandler: nil) {
|
|
for url in enumerator {
|
|
guard let url = url as? URL else {
|
|
continue
|
|
}
|
|
let fileName = url.lastPathComponent
|
|
if fileName.hasPrefix(baseName) {
|
|
let scanner = Scanner(string: fileName)
|
|
guard scanner.scanString(baseName, into: nil) else {
|
|
continue
|
|
}
|
|
var itemWidth: Int = 0
|
|
guard scanner.scanInt(&itemWidth) else {
|
|
continue
|
|
}
|
|
guard scanner.scanString("x", into: nil) else {
|
|
continue
|
|
}
|
|
var itemHeight: Int = 0
|
|
guard scanner.scanInt(&itemHeight) else {
|
|
continue
|
|
}
|
|
if !baseSuffix.isEmpty {
|
|
guard scanner.scanString(baseSuffix, into: nil) else {
|
|
continue
|
|
}
|
|
}
|
|
guard scanner.isAtEnd else {
|
|
continue
|
|
}
|
|
if itemWidth > width && itemHeight > height {
|
|
candidates.append((url.path, itemWidth, itemHeight))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if !candidates.isEmpty {
|
|
candidates.sort(by: { $0.width < $1.width })
|
|
return candidates[0].path
|
|
}
|
|
return nil
|
|
}
|
|
|
|
public final class AnimationCacheImpl: AnimationCache {
|
|
private final class Impl {
|
|
private final class ItemContext {
|
|
let subscribers = Bag<(AnimationCacheItemResult) -> Void>()
|
|
let disposable = MetaDisposable()
|
|
|
|
deinit {
|
|
self.disposable.dispose()
|
|
}
|
|
}
|
|
|
|
private let queue: Queue
|
|
private let basePath: String
|
|
private let allocateTempFile: () -> String
|
|
|
|
private let fetchQueues: [Queue]
|
|
private var nextFetchQueueIndex: Int = 0
|
|
|
|
private var itemContexts: [String: ItemContext] = [:]
|
|
|
|
init(queue: Queue, basePath: String, allocateTempFile: @escaping () -> String) {
|
|
self.queue = queue
|
|
|
|
let fetchQueueCount: Int
|
|
if ProcessInfo.processInfo.activeProcessorCount > 2 {
|
|
fetchQueueCount = 3
|
|
} else {
|
|
fetchQueueCount = 2
|
|
}
|
|
|
|
self.fetchQueues = (0 ..< fetchQueueCount).map { i in Queue(name: "AnimationCacheImpl-Fetch\(i)", qos: .default) }
|
|
self.basePath = basePath
|
|
self.allocateTempFile = allocateTempFile
|
|
}
|
|
|
|
deinit {
|
|
}
|
|
|
|
func get(sourceId: String, size: CGSize, fetch: @escaping (CGSize, AnimationCacheItemWriter) -> Disposable, updateResult: @escaping (AnimationCacheItemResult) -> Void) -> Disposable {
|
|
let sourceIdPath = itemSubpath(hashString: md5Hash(sourceId), width: Int(size.width), height: Int(size.height))
|
|
let itemDirectoryPath = "\(self.basePath)/\(sourceIdPath.directory)"
|
|
let itemPath = "\(itemDirectoryPath)/\(sourceIdPath.fileName)"
|
|
let itemFirstFramePath = "\(itemDirectoryPath)/\(sourceIdPath.fileName)-f"
|
|
|
|
if FileManager.default.fileExists(atPath: itemPath), let item = loadItem(path: itemPath) {
|
|
updateResult(AnimationCacheItemResult(item: item, isFinal: true))
|
|
|
|
return EmptyDisposable
|
|
}
|
|
|
|
let itemContext: ItemContext
|
|
var beginFetch = false
|
|
if let current = self.itemContexts[sourceId] {
|
|
itemContext = current
|
|
} else {
|
|
itemContext = ItemContext()
|
|
self.itemContexts[sourceId] = itemContext
|
|
beginFetch = true
|
|
}
|
|
|
|
let queue = self.queue
|
|
let index = itemContext.subscribers.add(updateResult)
|
|
|
|
updateResult(AnimationCacheItemResult(item: nil, isFinal: false))
|
|
|
|
if beginFetch {
|
|
let fetchQueueIndex = self.nextFetchQueueIndex
|
|
self.nextFetchQueueIndex += 1
|
|
guard let writer = AnimationCacheItemWriterImpl(queue: self.fetchQueues[fetchQueueIndex % self.fetchQueues.count], allocateTempFile: self.allocateTempFile, completion: { [weak self, weak itemContext] result in
|
|
queue.async {
|
|
guard let strongSelf = self, let itemContext = itemContext, itemContext === strongSelf.itemContexts[sourceId] else {
|
|
return
|
|
}
|
|
|
|
strongSelf.itemContexts.removeValue(forKey: sourceId)
|
|
|
|
guard let result = result else {
|
|
return
|
|
}
|
|
guard let _ = try? FileManager.default.createDirectory(at: URL(fileURLWithPath: itemDirectoryPath), withIntermediateDirectories: true, attributes: nil) else {
|
|
return
|
|
}
|
|
let _ = try? FileManager.default.removeItem(atPath: itemPath)
|
|
guard let _ = try? FileManager.default.moveItem(atPath: result.animationPath, toPath: itemPath) else {
|
|
return
|
|
}
|
|
let _ = try? FileManager.default.removeItem(atPath: itemFirstFramePath)
|
|
guard let _ = try? FileManager.default.moveItem(atPath: result.firstFramePath, toPath: itemFirstFramePath) else {
|
|
return
|
|
}
|
|
guard let item = loadItem(path: itemPath) else {
|
|
return
|
|
}
|
|
|
|
for f in itemContext.subscribers.copyItems() {
|
|
f(AnimationCacheItemResult(item: item, isFinal: true))
|
|
}
|
|
}
|
|
}) else {
|
|
return EmptyDisposable
|
|
}
|
|
|
|
let fetchDisposable = MetaDisposable()
|
|
fetchDisposable.set(fetch(size, writer))
|
|
|
|
itemContext.disposable.set(ActionDisposable { [weak writer] in
|
|
if let writer = writer {
|
|
writer.isCancelled = true
|
|
}
|
|
|
|
fetchDisposable.dispose()
|
|
})
|
|
}
|
|
|
|
return ActionDisposable { [weak self, weak itemContext] in
|
|
queue.async {
|
|
guard let strongSelf = self, let itemContext = itemContext, itemContext === strongSelf.itemContexts[sourceId] else {
|
|
return
|
|
}
|
|
itemContext.subscribers.remove(index)
|
|
if itemContext.subscribers.isEmpty {
|
|
itemContext.disposable.dispose()
|
|
strongSelf.itemContexts.removeValue(forKey: sourceId)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static func getFirstFrameSynchronously(basePath: String, sourceId: String, size: CGSize, allocateTempFile: @escaping () -> String) -> AnimationCacheItem? {
|
|
let hashString = md5Hash(sourceId)
|
|
let sourceIdPath = itemSubpath(hashString: hashString, width: Int(size.width), height: Int(size.height))
|
|
let itemDirectoryPath = "\(basePath)/\(sourceIdPath.directory)"
|
|
let itemFirstFramePath = "\(itemDirectoryPath)/\(sourceIdPath.fileName)-f"
|
|
|
|
if FileManager.default.fileExists(atPath: itemFirstFramePath) {
|
|
return loadItem(path: itemFirstFramePath)
|
|
}
|
|
|
|
if let adaptationItemPath = findHigherResolutionFileForAdaptation(itemDirectoryPath: itemDirectoryPath, baseName: "\(hashString)_", baseSuffix: "-f", width: Int(size.width), height: Int(size.height)) {
|
|
if let adaptedItem = adaptItemFromHigherResolution(itemPath: itemFirstFramePath, width: Int(size.width), height: Int(size.height), itemDirectoryPath: itemDirectoryPath, higherResolutionPath: adaptationItemPath, allocateTempFile: allocateTempFile) {
|
|
return adaptedItem
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
static func getFirstFrame(basePath: String, sourceId: String, size: CGSize, allocateTempFile: @escaping () -> String, completion: @escaping (AnimationCacheItem?) -> Void) -> Disposable {
|
|
let hashString = md5Hash(sourceId)
|
|
let sourceIdPath = itemSubpath(hashString: hashString, width: Int(size.width), height: Int(size.height))
|
|
let itemDirectoryPath = "\(basePath)/\(sourceIdPath.directory)"
|
|
let itemFirstFramePath = "\(itemDirectoryPath)/\(sourceIdPath.fileName)-f"
|
|
|
|
if FileManager.default.fileExists(atPath: itemFirstFramePath), let item = loadItem(path: itemFirstFramePath) {
|
|
completion(item)
|
|
return EmptyDisposable
|
|
}
|
|
|
|
if let adaptationItemPath = findHigherResolutionFileForAdaptation(itemDirectoryPath: itemDirectoryPath, baseName: "\(hashString)_", baseSuffix: "-f", width: Int(size.width), height: Int(size.height)) {
|
|
if let adaptedItem = adaptItemFromHigherResolution(itemPath: itemFirstFramePath, width: Int(size.width), height: Int(size.height), itemDirectoryPath: itemDirectoryPath, higherResolutionPath: adaptationItemPath, allocateTempFile: allocateTempFile) {
|
|
completion(adaptedItem)
|
|
return EmptyDisposable
|
|
}
|
|
}
|
|
|
|
completion(nil)
|
|
return EmptyDisposable
|
|
}
|
|
}
|
|
|
|
private let queue: Queue
|
|
private let basePath: String
|
|
private let impl: QueueLocalObject<Impl>
|
|
private let allocateTempFile: () -> String
|
|
|
|
public init(basePath: String, allocateTempFile: @escaping () -> String) {
|
|
let queue = Queue()
|
|
self.queue = queue
|
|
self.basePath = basePath
|
|
self.allocateTempFile = allocateTempFile
|
|
self.impl = QueueLocalObject(queue: queue, generate: {
|
|
return Impl(queue: queue, basePath: basePath, allocateTempFile: allocateTempFile)
|
|
})
|
|
}
|
|
|
|
public func get(sourceId: String, size: CGSize, fetch: @escaping (CGSize, AnimationCacheItemWriter) -> Disposable) -> Signal<AnimationCacheItemResult, NoError> {
|
|
return Signal { subscriber in
|
|
let disposable = MetaDisposable()
|
|
|
|
self.impl.with { impl in
|
|
disposable.set(impl.get(sourceId: sourceId, size: size, fetch: fetch, updateResult: { result in
|
|
subscriber.putNext(result)
|
|
if result.isFinal {
|
|
subscriber.putCompletion()
|
|
}
|
|
}))
|
|
}
|
|
|
|
return disposable
|
|
}
|
|
|> runOn(self.queue)
|
|
}
|
|
|
|
public func getFirstFrameSynchronously(sourceId: String, size: CGSize) -> AnimationCacheItem? {
|
|
return Impl.getFirstFrameSynchronously(basePath: self.basePath, sourceId: sourceId, size: size, allocateTempFile: self.allocateTempFile)
|
|
}
|
|
|
|
public func getFirstFrame(queue: Queue, sourceId: String, size: CGSize, completion: @escaping (AnimationCacheItem?) -> Void) -> Disposable {
|
|
let disposable = MetaDisposable()
|
|
|
|
let basePath = self.basePath
|
|
let allocateTempFile = self.allocateTempFile
|
|
queue.async {
|
|
disposable.set(Impl.getFirstFrame(basePath: basePath, sourceId: sourceId, size: size, allocateTempFile: allocateTempFile, completion: completion))
|
|
}
|
|
|
|
return disposable
|
|
}
|
|
}
|