gstreamer/sys/osxvideo/cocoawindow.m

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/* GStreamer
* Copyright (C) 2004 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* Copyright (C) 2007 Pioneers of the Inevitable <songbird@songbirdnest.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* The development of this code was made possible due to the involvement of Pioneers
* of the Inevitable, the creators of the Songbird Music player
*
*/
/* inspiration gained from looking at source of osx video out of xine and vlc
* and is reflected in the code
*/
#include <Cocoa/Cocoa.h>
#include <gst/gst.h>
#import "cocoawindow.h"
#import "osxvideosink.h"
#include <OpenGL/OpenGL.h>
#include <OpenGL/gl.h>
#include <OpenGL/glext.h>
/* Debugging category */
#include <gst/gstinfo.h>
@ implementation GstOSXVideoSinkWindow
/* The object has to be released */
- (id) initWithContentRect: (NSRect) rect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag
screen:(NSScreen *) aScreen
{
self = [super initWithContentRect: rect
styleMask: styleMask
backing: bufferingType
defer: flag
screen:aScreen];
GST_DEBUG ("Initializing GstOSXvideoSinkWindow");
gstview = [[GstGLView alloc] initWithFrame:rect];
if (gstview)
[self setContentView:gstview];
[self setTitle:@"GStreamer Video Output"];
return self;
}
- (void) setContentSize:(NSSize) size {
width = size.width;
height = size.height;
[gstview setVideoSize: (int) width:(int) height];
[super setContentSize:size];
}
- (GstGLView *) gstView {
return gstview;
}
- (void) awakeFromNib {
[self setAcceptsMouseMovedEvents:YES];
}
- (void) sendEvent:(NSEvent *) event {
BOOL taken = NO;
GST_DEBUG ("event %p type:%d", event,[event type]);
if ([event type] == NSKeyDown) {
}
/*taken = [gstview keyDown:event]; */
if (!taken) {
[super sendEvent:event];
}
}
@end
//
// OpenGL implementation
//
@ implementation GstGLView
- (id) initWithFrame:(NSRect) frame {
NSOpenGLPixelFormat *fmt;
NSOpenGLPixelFormatAttribute attribs[] = {
NSOpenGLPFAAccelerated,
NSOpenGLPFANoRecovery,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 24,
NSOpenGLPFAWindow,
0
};
fmt = [[NSOpenGLPixelFormat alloc]
initWithAttributes:attribs];
if (!fmt) {
GST_WARNING ("Cannot create NSOpenGLPixelFormat");
return nil;
}
self = [super initWithFrame: frame pixelFormat:fmt];
actualContext = [self openGLContext];
[actualContext makeCurrentContext];
[actualContext update];
/* Black background */
glClearColor (0.0, 0.0, 0.0, 0.0);
pi_texture = 0;
data = nil;
width = frame.size.width;
height = frame.size.height;
GST_LOG ("Width: %d Height: %d", width, height);
[self initTextures];
return self;
}
- (void) reshape {
NSRect bounds;
GST_LOG ("reshaping");
if (!initDone) {
return;
}
[actualContext makeCurrentContext];
bounds = [self bounds];
glViewport (0, 0, (GLint) bounds.size.width, (GLint) bounds.size.height);
}
- (void) initTextures {
[actualContext makeCurrentContext];
/* Free previous texture if any */
if (pi_texture) {
glDeleteTextures (1, &pi_texture);
}
if (data) {
data = g_realloc (data, width * height * sizeof(short)); // short or 3byte?
} else {
data = g_malloc0(width * height * sizeof(short));
}
/* Create textures */
glGenTextures (1, &pi_texture);
glEnable (GL_TEXTURE_RECTANGLE_EXT);
glEnable (GL_UNPACK_CLIENT_STORAGE_APPLE);
glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
glPixelStorei (GL_UNPACK_ROW_LENGTH, width);
glBindTexture (GL_TEXTURE_RECTANGLE_EXT, pi_texture);
/* Use VRAM texturing */
glTexParameteri (GL_TEXTURE_RECTANGLE_EXT,
GL_TEXTURE_STORAGE_HINT_APPLE, GL_STORAGE_CACHED_APPLE);
/* Tell the driver not to make a copy of the texture but to use
our buffer */
glPixelStorei (GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
/* Linear interpolation */
glTexParameteri (GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_RECTANGLE_EXT, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
/* I have no idea what this exactly does, but it seems to be
necessary for scaling */
glTexParameteri (GL_TEXTURE_RECTANGLE_EXT,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_RECTANGLE_EXT,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); WHY ??
glTexImage2D (GL_TEXTURE_RECTANGLE_EXT, 0, GL_RGBA,
width, height, 0,
GL_YCBCR_422_APPLE, GL_UNSIGNED_SHORT_8_8_APPLE, data);
initDone = 1;
}
- (void) reloadTexture {
if (!initDone) {
return;
}
GST_LOG ("Reloading Texture");
[actualContext makeCurrentContext];
glBindTexture (GL_TEXTURE_RECTANGLE_EXT, pi_texture);
glPixelStorei (GL_UNPACK_ROW_LENGTH, width);
/* glTexSubImage2D is faster than glTexImage2D
http://developer.apple.com/samplecode/Sample_Code/Graphics_3D/
TextureRange/MainOpenGLView.m.htm */
glTexSubImage2D (GL_TEXTURE_RECTANGLE_EXT, 0, 0, 0,
width, height,
GL_YCBCR_422_APPLE, GL_UNSIGNED_SHORT_8_8_APPLE, data); //FIXME
}
- (void) cleanUp {
initDone = 0;
}
- (void) drawQuad {
f_x = 1.0;
f_y = 1.0;
glBegin (GL_QUADS);
/* Top left */
glTexCoord2f (0.0, 0.0);
glVertex2f (-f_x, f_y);
/* Bottom left */
glTexCoord2f (0.0, (float) height);
glVertex2f (-f_x, -f_y);
/* Bottom right */
glTexCoord2f ((float) width, (float) height);
glVertex2f (f_x, -f_y);
/* Top right */
glTexCoord2f ((float) width, 0.0);
glVertex2f (f_x, f_y);
glEnd ();
}
- (void) drawRect:(NSRect) rect {
int params[] = { 1 };
[actualContext makeCurrentContext];
CGLSetParameter (CGLGetCurrentContext (), kCGLCPSwapInterval, params);
/* Black background */
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (!initDone) {
[actualContext flushBuffer];
return;
}
/* Draw */
glBindTexture (GL_TEXTURE_RECTANGLE_EXT, pi_texture); // FIXME
[self drawQuad];
/* Draw */
[actualContext flushBuffer];
}
- (void) displayTexture {
if ([self lockFocusIfCanDraw]) {
[self drawRect:[self bounds]];
[self reloadTexture];
[self unlockFocus];
}
}
- (char *) getTextureBuffer {
return data;
}
- (void) setFullScreen:(BOOL) flag {
if (!fullscreen && flag) {
// go to full screen
/* Create the new pixel format */
NSOpenGLPixelFormat *fmt;
NSOpenGLPixelFormatAttribute attribs[] = {
NSOpenGLPFAAccelerated,
NSOpenGLPFANoRecovery,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 24,
NSOpenGLPFAFullScreen,
NSOpenGLPFAScreenMask,
CGDisplayIDToOpenGLDisplayMask (kCGDirectMainDisplay),
0
};
fmt = [[NSOpenGLPixelFormat alloc]
initWithAttributes:attribs];
if (!fmt) {
GST_WARNING ("Cannot create NSOpenGLPixelFormat");
return;
}
/* Create the new OpenGL context */
fullScreenContext = [[NSOpenGLContext alloc]
initWithFormat: fmt shareContext:nil];
if (!fullScreenContext) {
GST_WARNING ("Failed to create new NSOpenGLContext");
return;
}
actualContext = fullScreenContext;
/* Capture display, switch to fullscreen */
if (CGCaptureAllDisplays () != CGDisplayNoErr) {
GST_WARNING ("CGCaptureAllDisplays() failed");
return;
}
[fullScreenContext setFullScreen];
[fullScreenContext makeCurrentContext];
fullscreen = YES;
[self initTextures];
[self setNeedsDisplay:YES];
} else if (fullscreen && !flag) {
// fullscreen now and needs to go back to normal
initDone = NO;
actualContext = [self openGLContext];
[NSOpenGLContext clearCurrentContext];
[fullScreenContext clearDrawable];
[fullScreenContext release];
fullScreenContext = nil;
CGReleaseAllDisplays ();
[self reshape];
[self initTextures];
[self setNeedsDisplay:YES];
fullscreen = NO;
initDone = YES;
}
}
- (void) setVideoSize: (int) w:(int) h {
GST_LOG ("width:%d, height:%d", w, h);
width = w;
height = h;
// if (data) g_free(data);
// data = g_malloc0 (2 * w * h);
[self initTextures];
}
- (void) dealloc {
GST_LOG ("dealloc called");
if (data) g_free(data);
if (fullScreenContext) {
[NSOpenGLContext clearCurrentContext];
[fullScreenContext clearDrawable];
[fullScreenContext release];
if (actualContext == fullScreenContext) actualContext = nil;
fullScreenContext = nil;
}
[super dealloc];
}
@end