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/*
* 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 {
var log: LogHelper
var mpv: OpaquePointer?
var mpvRenderContext: OpaquePointer?
var fbo: GLint = 1
let uninitLock = NSLock()
init(_ mpv: OpaquePointer, _ log: LogHelper) {
self.mpv = mpv
self.log = log
}
func initRender() {
let advanced: CInt = 1
let api = UnsafeMutableRawPointer(mutating: (MPV_RENDER_API_TYPE_OPENGL as NSString).utf8String)
let pAddress = mpv_opengl_init_params(get_proc_address: getProcAddress,
get_proc_address_ctx: nil)
TypeHelper.withUnsafeMutableRawPointers([pAddress, advanced]) { (pointers: [UnsafeMutableRawPointer?]) in
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: pointers[0]),
mpv_render_param(type: MPV_RENDER_PARAM_ADVANCED_CONTROL, data: pointers[1]),
mpv_render_param()
]
if mpv_render_context_create(&mpvRenderContext, mpv, ¶ms) < 0 {
log.error("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 identifier = CFBundleGetBundleWithIdentifier("com.apple.opengl" as CFString)
let addr = CFBundleGetFunctionPointerForName(identifier, 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 {
log.warning("Init mpv render context first.")
} else {
mpv_render_context_set_update_callback(mpvRenderContext, callback, TypeHelper.bridge(obj: object))
}
}
func setRenderControlCallback(_ callback: @escaping mp_render_cb_control_fn, context object: AnyObject) {
if mpvRenderContext == nil {
log.warning("Init mpv render context first.")
} else {
mp_render_context_set_control_callback(mpvRenderContext, callback, TypeHelper.bridge(obj: object))
}
}
func reportRenderFlip() {
if mpvRenderContext == nil { return }
mpv_render_context_report_swap(mpvRenderContext)
}
func isRenderUpdateFrame() -> Bool {
uninitLock.lock()
if mpvRenderContext == nil {
uninitLock.unlock()
return false
}
let flags: UInt64 = mpv_render_context_update(mpvRenderContext)
uninitLock.unlock()
return flags & UInt64(MPV_RENDER_UPDATE_FRAME.rawValue) > 0
}
func drawRender(_ surface: NSSize, _ depth: GLint, _ ctx: CGLContextObj, skip: Bool = false) {
uninitLock.lock()
if mpvRenderContext != nil {
var i: GLint = 0
let flip: CInt = 1
let skip: CInt = skip ? 1 : 0
let 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
let data = mpv_opengl_fbo(fbo: Int32(fbo),
w: Int32(surface.width),
h: Int32(surface.height),
internal_format: 0)
TypeHelper.withUnsafeMutableRawPointers([data, flip, ditherDepth, skip]) { (pointers: [UnsafeMutableRawPointer?]) in
var params: [mpv_render_param] = [
mpv_render_param(type: MPV_RENDER_PARAM_OPENGL_FBO, data: pointers[0]),
mpv_render_param(type: MPV_RENDER_PARAM_FLIP_Y, data: pointers[1]),
mpv_render_param(type: MPV_RENDER_PARAM_DEPTH, data: pointers[2]),
mpv_render_param(type: MPV_RENDER_PARAM_SKIP_RENDERING, data: pointers[3]),
mpv_render_param()
]
mpv_render_context_render(mpvRenderContext, ¶ms)
}
} else {
glClearColor(0, 0, 0, 1)
glClear(GLbitfield(GL_COLOR_BUFFER_BIT))
}
if !skip { CGLFlushDrawable(ctx) }
uninitLock.unlock()
}
func setRenderICCProfile(_ profile: NSColorSpace) {
if mpvRenderContext == nil { return }
guard var iccData = profile.iccProfileData else {
log.warning("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)
withUnsafeMutableBytes(of: &icc) { (ptr: UnsafeMutableRawBufferPointer) in
let params = mpv_render_param(type: MPV_RENDER_PARAM_ICC_PROFILE, data: ptr.baseAddress)
mpv_render_context_set_parameter(mpvRenderContext, params)
}
}
}
func setRenderLux(_ lux: Int) {
if mpvRenderContext == nil { return }
var light = lux
withUnsafeMutableBytes(of: &light) { (ptr: UnsafeMutableRawBufferPointer) in
let params = mpv_render_param(type: MPV_RENDER_PARAM_AMBIENT_LIGHT, data: ptr.baseAddress)
mpv_render_context_set_parameter(mpvRenderContext, params)
}
}
func uninit() {
mpv_render_context_set_update_callback(mpvRenderContext, nil, nil)
mp_render_context_set_control_callback(mpvRenderContext, nil, nil)
uninitLock.lock()
mpv_render_context_free(mpvRenderContext)
mpvRenderContext = nil
mpv_destroy(mpv)
mpv = nil
uninitLock.unlock()
}
}
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