1 files changed, 251 insertions, 0 deletions
diff --git a/osdep/macos/libmpv_helper.swift b/osdep/macos/libmpv_helper.swift
new file mode 100644
index 0000000000..bf069efc6b
--- /dev/null
+++ b/osdep/macos/libmpv_helper.swift
@@ -0,0 +1,251 @@
+/*
+ * 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 glDummy: @convention(c) () -> Void = {}
+
+class LibmpvHelper: LogHelper {
+
+    var mpvHandle: OpaquePointer?
+    var mpvRenderContext: OpaquePointer?
+    var macOpts: macos_opts = macos_opts()
+    var fbo: GLint = 1
+    let deinitLock = NSLock()
+
+    init(_ mpv: OpaquePointer, _ name: String) {
+        let newlog = mp_log_new(UnsafeMutablePointer<MPContext>(mpv), mp_client_get_log(mpv), name)
+        super.init(newlog)
+        mpvHandle = mpv
+
+        guard let mpctx = UnsafeMutablePointer<MPContext>(mp_client_get_core(mpvHandle)) else {
+            sendError("No MPContext available")
+            exit(1)
+        }
+        guard let app = NSApp as? Application,
+              let ptr = mp_get_config_group(mpctx,
+                                            mp_client_get_global(mpvHandle),
+                                            app.getMacOSConf()) else
+        {
+            sendError("macOS config group couldn't be retrieved'")
+            exit(1)
+        }
+        macOpts = UnsafeMutablePointer<macos_opts>(OpaquePointer(ptr)).pointee
+    }
+
+    func initRender() {
+        var advanced: CInt = 1
+        let api = UnsafeMutableRawPointer(mutating: (MPV_RENDER_API_TYPE_OPENGL as NSString).utf8String)
+        var pAddress = mpv_opengl_init_params(get_proc_address: getProcAddress,
+                                              get_proc_address_ctx: nil,
+                                              extra_exts: nil)
+        var params: [mpv_render_param] = [
+            mpv_render_param(type: MPV_RENDER_PARAM_API_TYPE, data: api),
+            mpv_render_param(type: MPV_RENDER_PARAM_OPENGL_INIT_PARAMS, data: &pAddress),
+            mpv_render_param(type: MPV_RENDER_PARAM_ADVANCED_CONTROL, data: &advanced),
+            mpv_render_param()
+        ]
+
+        if (mpv_render_context_create(&mpvRenderContext, mpvHandle, &params) < 0)
+        {
+            sendError("Render context init has failed.")
+            exit(1)
+        }
+    }
+
+    let getProcAddress: (@convention(c) (UnsafeMutableRawPointer?, UnsafePointer<Int8>?)
+                        -> UnsafeMutableRawPointer?) =
+    {
+        (ctx: UnsafeMutableRawPointer?, name: UnsafePointer<Int8>?)
+                        -> UnsafeMutableRawPointer? in
+        let symbol: CFString = CFStringCreateWithCString(
+                                kCFAllocatorDefault, name, kCFStringEncodingASCII)
+        let indentifier = CFBundleGetBundleWithIdentifier("com.apple.opengl" as CFString)
+        let addr = CFBundleGetFunctionPointerForName(indentifier, symbol)
+
+        if symbol as String == "glFlush" {
+            return unsafeBitCast(glDummy, to: UnsafeMutableRawPointer.self)
+        }
+
+        return addr
+    }
+
+    func setRenderUpdateCallback(_ callback: @escaping mpv_render_update_fn, context object: AnyObject) {
+        if mpvRenderContext == nil {
+            sendWarning("Init mpv render context first.")
+        } else {
+            mpv_render_context_set_update_callback(mpvRenderContext, callback, MPVHelper.bridge(obj: object))
+        }
+    }
+
+    func setRenderControlCallback(_ callback: @escaping mp_render_cb_control_fn, context object: AnyObject) {
+        if mpvRenderContext == nil {
+            sendWarning("Init mpv render context first.")
+        } else {
+            mp_render_context_set_control_callback(mpvRenderContext, callback, MPVHelper.bridge(obj: object))
+        }
+    }
+
+    func reportRenderFlip() {
+        if mpvRenderContext == nil { return }
+        mpv_render_context_report_swap(mpvRenderContext)
+    }
+
+    func isRenderUpdateFrame() -> Bool {
+        deinitLock.lock()
+        if mpvRenderContext == nil {
+            deinitLock.unlock()
+            return false
+        }
+        let flags: UInt64 = mpv_render_context_update(mpvRenderContext)
+        deinitLock.unlock()
+        return flags & UInt64(MPV_RENDER_UPDATE_FRAME.rawValue) > 0
+    }
+
+    func drawRender(_ surface: NSSize, _ depth: GLint, _ ctx: CGLContextObj, skip: Bool = false) {
+        deinitLock.lock()
+        if mpvRenderContext != nil {
+            var i: GLint = 0
+            var flip: CInt = 1
+            var skip: CInt = skip ? 1 : 0
+            var ditherDepth = depth
+            glGetIntegerv(GLenum(GL_DRAW_FRAMEBUFFER_BINDING), &i)
+            // CAOpenGLLayer has ownership of FBO zero yet can return it to us,
+            // so only utilize a newly received FBO ID if it is nonzero.
+            fbo = i != 0 ? i : fbo
+
+            var data = mpv_opengl_fbo(fbo: Int32(fbo),
+                                        w: Int32(surface.width),
+                                        h: Int32(surface.height),
+                          internal_format: 0)
+            var params: [mpv_render_param] = [
+                mpv_render_param(type: MPV_RENDER_PARAM_OPENGL_FBO, data: &data),
+                mpv_render_param(type: MPV_RENDER_PARAM_FLIP_Y, data: &flip),
+                mpv_render_param(type: MPV_RENDER_PARAM_DEPTH, data: &ditherDepth),
+                mpv_render_param(type: MPV_RENDER_PARAM_SKIP_RENDERING, data: &skip),
+                mpv_render_param()
+            ]
+            mpv_render_context_render(mpvRenderContext, &params);
+        } else {
+            glClearColor(0, 0, 0, 1)
+            glClear(GLbitfield(GL_COLOR_BUFFER_BIT))
+        }
+
+        if !skip { CGLFlushDrawable(ctx) }
+
+        deinitLock.unlock()
+    }
+
+    func setRenderICCProfile(_ profile: NSColorSpace) {
+        if mpvRenderContext == nil { return }
+        guard var iccData = profile.iccProfileData else {
+            sendWarning("Invalid ICC profile data.")
+            return
+        }
+        iccData.withUnsafeMutableBytes { (ptr: UnsafeMutableRawBufferPointer) in
+            guard let baseAddress = ptr.baseAddress, ptr.count > 0 else { return }
+
+            let u8Ptr = baseAddress.assumingMemoryBound(to: UInt8.self)
+            let iccBstr = bstrdup(nil, bstr(start: u8Ptr, len: ptr.count))
+            var icc = mpv_byte_array(data: iccBstr.start, size: iccBstr.len)
+            let params = mpv_render_param(type: MPV_RENDER_PARAM_ICC_PROFILE, data: &icc)
+            mpv_render_context_set_parameter(mpvRenderContext, params)
+        }
+    }
+
+    func setRenderLux(_ lux: Int) {
+        if mpvRenderContext == nil { return }
+        var light = lux
+        let params = mpv_render_param(type: MPV_RENDER_PARAM_AMBIENT_LIGHT, data: &light)
+        mpv_render_context_set_parameter(mpvRenderContext, params)
+    }
+
+    func commandAsync(_ cmd: [String?], id: UInt64 = 1) {
+        if mpvHandle == nil { return }
+        var mCmd = cmd
+        mCmd.append(nil)
+        var cargs = mCmd.map { $0.flatMap { UnsafePointer<Int8>(strdup($0)) } }
+        mpv_command_async(mpvHandle, id, &cargs)
+        for ptr in cargs { free(UnsafeMutablePointer(mutating: ptr)) }
+    }
+
+    func observeString(_ property: String) {
+        mpv_observe_property(mpvHandle, 0, property, MPV_FORMAT_STRING)
+    }
+
+    func observeFlag(_ property: String) {
+        mpv_observe_property(mpvHandle, 0, property, MPV_FORMAT_FLAG)
+    }
+
+    // Unsafe function when called while using the render API
+    func command(_ cmd: String) {
+        if mpvHandle == nil { return }
+        mpv_command_string(mpvHandle, cmd)
+    }
+
+    func getBoolProperty(_ name: String) -> Bool {
+        if mpvHandle == nil { return false }
+        var value = Int32()
+        mpv_get_property(mpvHandle, name, MPV_FORMAT_FLAG, &value)
+        return value > 0
+    }
+
+    func getIntProperty(_ name: String) -> Int {
+        if mpvHandle == nil { return 0 }
+        var value = Int64()
+        mpv_get_property(mpvHandle, name, MPV_FORMAT_INT64, &value)
+        return Int(value)
+    }
+
+    func getStringProperty(_ name: String) -> String? {
+        guard let mpv = mpvHandle else { return nil }
+        guard let value = mpv_get_property_string(mpv, name) else { return nil }
+        let str = String(cString: value)
+        mpv_free(value)
+        return str
+    }
+
+    func deinitRender() {
+        mpv_render_context_set_update_callback(mpvRenderContext, nil, nil)
+        mp_render_context_set_control_callback(mpvRenderContext, nil, nil)
+        deinitLock.lock()
+        mpv_render_context_free(mpvRenderContext)
+        mpvRenderContext = nil
+        deinitLock.unlock()
+    }
+
+    func deinitMPV(_ destroy: Bool = false) {
+        if destroy {
+            mpv_destroy(mpvHandle)
+        }
+        mpvHandle = nil
+        log = nil
+    }
+
+    // *(char **) MPV_FORMAT_STRING on mpv_event_property
+    class func mpvStringArrayToString(_ obj: UnsafeMutableRawPointer) -> String? {
+        let cstr = UnsafeMutablePointer<UnsafeMutablePointer<Int8>>(OpaquePointer(obj))
+        return String(cString: cstr[0])
+    }
+
+    // MPV_FORMAT_FLAG
+    class func mpvFlagToBool(_ obj: UnsafeMutableRawPointer) -> Bool? {
+        return UnsafePointer<Bool>(OpaquePointer(obj))?.pointee
+    }
+}