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@import GLKit;
@import OpenGLES;
#import "ViewController.h"
#import <mpv/client.h>
#import <mpv/opengl_cb.h>
#import <stdio.h>
#import <stdlib.h>
static inline void check_error(int status)
{
if (status < 0) {
printf("mpv API error: %s\n", mpv_error_string(status));
exit(1);
}
}
static void *get_proc_address(void *ctx, const char *name)
{
CFStringRef symbolName = CFStringCreateWithCString(kCFAllocatorDefault, name, kCFStringEncodingASCII);
void *addr = CFBundleGetFunctionPointerForName(CFBundleGetBundleWithIdentifier(CFSTR("com.apple.opengles")), symbolName);
CFRelease(symbolName);
return addr;
}
static void glupdate(void *ctx);
@interface MpvClientOGLView : GLKView
@property mpv_opengl_cb_context *mpvGL;
@end
@implementation MpvClientOGLView {
GLint defaultFBO;
}
- (void)awakeFromNib
{
[super awakeFromNib];
self.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES3];
[EAGLContext setCurrentContext:self.context];
// Configure renderbuffers created by the view
self.drawableColorFormat = GLKViewDrawableColorFormatRGBA8888;
self.drawableDepthFormat = GLKViewDrawableDepthFormatNone;
self.drawableStencilFormat = GLKViewDrawableStencilFormatNone;
defaultFBO = -1;
}
- (void)fillBlack
{
glClearColor(0, 0, 0, 0);
glClear(GL_COLOR_BUFFER_BIT);
}
- (void)drawRect
{
if (defaultFBO == -1)
{
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &defaultFBO);
}
if (self.mpvGL)
{
mpv_opengl_cb_draw(self.mpvGL,
defaultFBO,
self.bounds.size.width * self.contentScaleFactor,
-self.bounds.size.height * self.contentScaleFactor);
}
}
- (void)drawRect:(CGRect)rect
{
[self drawRect];
}
@end
static void wakeup(void *);
static void glupdate(void *ctx)
{
MpvClientOGLView *glView = (__bridge MpvClientOGLView *)ctx;
// I'm still not sure what the best way to handle this is, but this
// works.
dispatch_async(dispatch_get_main_queue(), ^{
[glView display];
});
}
@interface ViewController ()
@property (nonatomic) IBOutlet MpvClientOGLView *glView;
- (void) readEvents;
@end
static void wakeup(void *context)
{
ViewController *a = (__bridge ViewController *) context;
[a readEvents];
}
@implementation ViewController {
mpv_handle *mpv;
dispatch_queue_t queue;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
mpv = mpv_create();
if (!mpv) {
printf("failed creating context\n");
exit(1);
}
// request important errors
NSString *logFile = [NSTemporaryDirectory() stringByAppendingPathComponent:@"mpv-log.txt"];
NSLog(@"%@", logFile);
check_error(mpv_set_option_string(mpv, "log-file", logFile.UTF8String));
check_error(mpv_request_log_messages(mpv, "warn"));
check_error(mpv_initialize(mpv));
check_error(mpv_set_option_string(mpv, "vo", "opengl-cb"));
mpv_opengl_cb_context *mpvGL = mpv_get_sub_api(mpv, MPV_SUB_API_OPENGL_CB);
if (!mpvGL) {
puts("libmpv does not have the opengl-cb sub-API.");
exit(1);
}
[self.glView display];
// pass the mpvGL context to our view
self.glView.mpvGL = mpvGL;
int r = mpv_opengl_cb_init_gl(mpvGL, NULL, get_proc_address, NULL);
if (r < 0) {
puts("gl init has failed.");
exit(1);
}
mpv_opengl_cb_set_update_callback(mpvGL, glupdate, (__bridge void *)self.glView);
// Deal with MPV in the background.
queue = dispatch_queue_create("mpv", DISPATCH_QUEUE_SERIAL);
dispatch_async(queue, ^{
// Register to be woken up whenever mpv generates new events.
mpv_set_wakeup_callback(mpv, wakeup, (__bridge void *)self);
// Load the indicated file
const char *cmd[] = {"loadfile", "http://download.blender.org/peach/bigbuckbunny_movies/BigBuckBunny_640x360.m4v", NULL};
check_error(mpv_command(mpv, cmd));
check_error(mpv_set_option_string(mpv, "loop", "inf"));
});
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)handleEvent:(mpv_event *)event
{
switch (event->event_id) {
case MPV_EVENT_SHUTDOWN: {
mpv_detach_destroy(mpv);
mpv_opengl_cb_uninit_gl(self.glView.mpvGL);
mpv = NULL;
printf("event: shutdown\n");
break;
}
case MPV_EVENT_LOG_MESSAGE: {
struct mpv_event_log_message *msg = (struct mpv_event_log_message *)event->data;
printf("[%s] %s: %s", msg->prefix, msg->level, msg->text);
}
default:
printf("event: %s\n", mpv_event_name(event->event_id));
}
}
- (void)readEvents
{
dispatch_async(queue, ^{
while (mpv) {
mpv_event *event = mpv_wait_event(mpv, 0);
if (event->event_id == MPV_EVENT_NONE)
{
break;
}
[self handleEvent:event];
}
});
}
@end
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