mpv/video/out/cocoa-cb/video_layer.swift

317 lines
10 KiB
Swift

/*
* This file is part of mpv.
*
* mpv 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 2.1 of the License, or (at your option) any later version.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
import Cocoa
import OpenGL.GL
import OpenGL.GL3
let glVersions: [CGLOpenGLProfile] = [
kCGLOGLPVersion_3_2_Core,
kCGLOGLPVersion_Legacy
]
let glFormatBase: [CGLPixelFormatAttribute] = [
kCGLPFAOpenGLProfile,
kCGLPFAAccelerated,
kCGLPFADoubleBuffer
]
let glFormatSoftwareBase: [CGLPixelFormatAttribute] = [
kCGLPFAOpenGLProfile,
kCGLPFARendererID,
CGLPixelFormatAttribute(UInt32(kCGLRendererGenericFloatID)),
kCGLPFADoubleBuffer
]
let glFormatOptional: [[CGLPixelFormatAttribute]] = [
[kCGLPFABackingStore],
[kCGLPFAAllowOfflineRenderers],
[kCGLPFASupportsAutomaticGraphicsSwitching]
]
let glFormat10Bit: [CGLPixelFormatAttribute] = [
kCGLPFAColorSize,
_CGLPixelFormatAttribute(rawValue: 64),
kCGLPFAColorFloat
]
let attributeLookUp: [UInt32:String] = [
kCGLOGLPVersion_3_2_Core.rawValue: "kCGLOGLPVersion_3_2_Core",
kCGLOGLPVersion_Legacy.rawValue: "kCGLOGLPVersion_Legacy",
kCGLPFAOpenGLProfile.rawValue: "kCGLPFAOpenGLProfile",
UInt32(kCGLRendererGenericFloatID): "kCGLRendererGenericFloatID",
kCGLPFARendererID.rawValue: "kCGLPFARendererID",
kCGLPFAAccelerated.rawValue: "kCGLPFAAccelerated",
kCGLPFADoubleBuffer.rawValue: "kCGLPFADoubleBuffer",
kCGLPFABackingStore.rawValue: "kCGLPFABackingStore",
kCGLPFAColorSize.rawValue: "kCGLPFAColorSize",
kCGLPFAColorFloat.rawValue: "kCGLPFAColorFloat",
kCGLPFAAllowOfflineRenderers.rawValue: "kCGLPFAAllowOfflineRenderers",
kCGLPFASupportsAutomaticGraphicsSwitching.rawValue: "kCGLPFASupportsAutomaticGraphicsSwitching",
]
class VideoLayer: CAOpenGLLayer {
unowned var cocoaCB: CocoaCB
var libmpv: LibmpvHelper { get { return cocoaCB.libmpv } }
let displayLock = NSLock()
let cglContext: CGLContextObj
let cglPixelFormat: CGLPixelFormatObj
var needsFlip: Bool = false
var forceDraw: Bool = false
var surfaceSize: NSSize = NSSize(width: 0, height: 0)
var bufferDepth: GLint = 8
enum Draw: Int { case normal = 1, atomic, atomicEnd }
var draw: Draw = .normal
let queue: DispatchQueue = DispatchQueue(label: "io.mpv.queue.draw")
var needsICCUpdate: Bool = false {
didSet {
if needsICCUpdate == true {
update()
}
}
}
var inLiveResize: Bool = false {
didSet {
if inLiveResize {
isAsynchronous = true
}
update(force: true)
}
}
init(cocoaCB ccb: CocoaCB) {
cocoaCB = ccb
(cglPixelFormat, bufferDepth) = VideoLayer.createPixelFormat(ccb.libmpv)
cglContext = VideoLayer.createContext(ccb.libmpv, cglPixelFormat)
super.init()
autoresizingMask = [.layerWidthSizable, .layerHeightSizable]
backgroundColor = NSColor.black.cgColor
if #available(macOS 10.12, *), bufferDepth > 8 {
contentsFormat = .RGBA16Float
}
var i: GLint = 1
CGLSetParameter(cglContext, kCGLCPSwapInterval, &i)
CGLSetCurrentContext(cglContext)
libmpv.initRender()
libmpv.setRenderUpdateCallback(updateCallback, context: self)
libmpv.setRenderControlCallback(cocoaCB.controlCallback, context: cocoaCB)
}
//necessary for when the layer containing window changes the screen
override init(layer: Any) {
guard let oldLayer = layer as? VideoLayer else {
fatalError("init(layer: Any) passed an invalid layer")
}
cocoaCB = oldLayer.cocoaCB
surfaceSize = oldLayer.surfaceSize
cglPixelFormat = oldLayer.cglPixelFormat
cglContext = oldLayer.cglContext
super.init()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func canDraw(inCGLContext ctx: CGLContextObj,
pixelFormat pf: CGLPixelFormatObj,
forLayerTime t: CFTimeInterval,
displayTime ts: UnsafePointer<CVTimeStamp>?) -> Bool {
if inLiveResize == false {
isAsynchronous = false
}
return cocoaCB.backendState == .initialized &&
(forceDraw || libmpv.isRenderUpdateFrame())
}
override func draw(inCGLContext ctx: CGLContextObj,
pixelFormat pf: CGLPixelFormatObj,
forLayerTime t: CFTimeInterval,
displayTime ts: UnsafePointer<CVTimeStamp>?) {
needsFlip = false
forceDraw = false
if draw.rawValue >= Draw.atomic.rawValue {
if draw == .atomic {
draw = .atomicEnd
} else {
atomicDrawingEnd()
}
}
updateSurfaceSize()
libmpv.drawRender(surfaceSize, bufferDepth, ctx)
if needsICCUpdate {
needsICCUpdate = false
cocoaCB.updateICCProfile()
}
}
func updateSurfaceSize() {
var dims: [GLint] = [0, 0, 0, 0]
glGetIntegerv(GLenum(GL_VIEWPORT), &dims)
surfaceSize = NSSize(width: CGFloat(dims[2]), height: CGFloat(dims[3]))
if NSEqualSizes(surfaceSize, NSZeroSize) {
surfaceSize = bounds.size
surfaceSize.width *= contentsScale
surfaceSize.height *= contentsScale
}
}
func atomicDrawingStart() {
if draw == .normal {
NSDisableScreenUpdates()
draw = .atomic
}
}
func atomicDrawingEnd() {
if draw.rawValue >= Draw.atomic.rawValue {
NSEnableScreenUpdates()
draw = .normal
}
}
override func copyCGLPixelFormat(forDisplayMask mask: UInt32) -> CGLPixelFormatObj {
return cglPixelFormat
}
override func copyCGLContext(forPixelFormat pf: CGLPixelFormatObj) -> CGLContextObj {
contentsScale = cocoaCB.window?.backingScaleFactor ?? 1.0
return cglContext
}
let updateCallback: mpv_render_update_fn = { (ctx) in
let layer: VideoLayer = unsafeBitCast(ctx, to: VideoLayer.self)
layer.update()
}
override func display() {
displayLock.lock()
let isUpdate = needsFlip
super.display()
CATransaction.flush()
if isUpdate && needsFlip {
CGLSetCurrentContext(cglContext)
if libmpv.isRenderUpdateFrame() {
libmpv.drawRender(NSZeroSize, bufferDepth, cglContext, skip: true)
}
}
displayLock.unlock()
}
func update(force: Bool = false) {
if force { forceDraw = true }
queue.async {
if self.forceDraw || !self.inLiveResize {
self.needsFlip = true
self.display()
}
}
}
class func createPixelFormat(_ libmpv: LibmpvHelper) -> (CGLPixelFormatObj, GLint) {
var pix: CGLPixelFormatObj?
var depth: GLint = 8
var err: CGLError = CGLError(rawValue: 0)
let swRender = libmpv.macOpts.cocoa_cb_sw_renderer
if swRender != 1 {
(pix, depth, err) = VideoLayer.findPixelFormat(libmpv)
}
if (err != kCGLNoError || pix == nil) && swRender != 0 {
(pix, depth, err) = VideoLayer.findPixelFormat(libmpv, software: true)
}
guard let pixelFormat = pix, err == kCGLNoError else {
libmpv.sendError("Couldn't create any CGL pixel format")
exit(1)
}
return (pixelFormat, depth)
}
class func findPixelFormat(_ libmpv: LibmpvHelper, software: Bool = false) -> (CGLPixelFormatObj?, GLint, CGLError) {
var pix: CGLPixelFormatObj?
var err: CGLError = CGLError(rawValue: 0)
var npix: GLint = 0
for ver in glVersions {
var glBase = software ? glFormatSoftwareBase : glFormatBase
glBase.insert(CGLPixelFormatAttribute(ver.rawValue), at: 1)
var glFormat = [glBase]
if (libmpv.macOpts.cocoa_cb_10bit_context == 1) {
glFormat += [glFormat10Bit]
}
glFormat += glFormatOptional
for index in stride(from: glFormat.count-1, through: 0, by: -1) {
let format = glFormat.flatMap { $0 } + [_CGLPixelFormatAttribute(rawValue: 0)]
err = CGLChoosePixelFormat(format, &pix, &npix)
if err == kCGLBadAttribute || err == kCGLBadPixelFormat || pix == nil {
glFormat.remove(at: index)
} else {
let attArray = format.map({ (value: _CGLPixelFormatAttribute) -> String in
return attributeLookUp[value.rawValue] ?? String(value.rawValue)
})
libmpv.sendVerbose("Created CGL pixel format with attributes: " +
"\(attArray.joined(separator: ", "))")
return (pix, glFormat.contains(glFormat10Bit) ? 16 : 8, err)
}
}
}
let errS = String(cString: CGLErrorString(err))
libmpv.sendWarning("Couldn't create a " +
"\(software ? "software" : "hardware accelerated") " +
"CGL pixel format: \(errS) (\(err.rawValue))")
if software == false && libmpv.macOpts.cocoa_cb_sw_renderer == -1 {
libmpv.sendWarning("Falling back to software renderer")
}
return (pix, 8, err)
}
class func createContext(_ libmpv: LibmpvHelper, _ pixelFormat: CGLPixelFormatObj) -> CGLContextObj {
var context: CGLContextObj?
let error = CGLCreateContext(pixelFormat, nil, &context)
guard let cglContext = context, error == kCGLNoError else {
let errS = String(cString: CGLErrorString(error))
libmpv.sendError("Couldn't create a CGLContext: " + errS)
exit(1)
}
return cglContext
}
}