Mercurial > sdl-ios-xcode
view src/video/quartz/SDL_QuartzYUV.m @ 934:af585d6efec8
Date: Thu, 17 Jun 2004 11:38:51 -0700 (PDT)
From: Eric Wing <ewing2121@yahoo.com>
Subject: New OS X patch (was Re: [SDL] Bug with inverted mouse coordinates in
I have a new patch for OS X I would like to submit.
First, it appears no further action has been taken on
my fix from Apple on the OpenGL windowed mode mouse
inversion problem. The fix would reunify the code, and
no longer require case checking for which version of
the OS you are running. This is probably a good fix
because the behavior with the old code could change
again with future versions of the OS, so those fixes
are included in this new patch.
But in addition, when I was at Apple, I asked them
about the ability to distinguish between the modifier
keys on the left and right sides of the keyboard (e.g.
Left Shift, Right Shift, Left/Right Alt, L/R Cmd, L/R
Ctrl). They told me that starting with Panther, the OS
began supporting this feature. This has always been a
source of annoyance for me when bringing a program
that comes from Windows or Linux to OS X when the
keybindings happened to need distinguishable left-side
and right-side keys. So the rest of the patch I am
submitting contains new code to support this feature
on Panther (and presumably later versions of the OS).
So after removing the OS version checks for the mouse
inversion problem, I reused the OS version checks to
activate the Left/Right detection of modifier keys. If
you are running Panther (or above), the new code will
attempt to distinguish between sides. For the older
OS's, the code path reverts to the original code.
I've tested with Panther on a G4 Cube, G5 dual
processor, and Powerbook Rev C. The Cube and G5
keyboards demonstrated the ability to distinguish
between sides. The Powerbook seems to only have
left-side keys, but the patch was still able to handle
it by producing the same results as before the patch.
I also wanted to test a non-Apple keyboard.
Unfortunately, I don't have any PC USB keyboards.
However, I was able to borrow a Sun Microsystems USB
keyboard, so I tried that out on the G5, and I got the
correct behavior for left and right sides. I'm
expecting that if it worked with a Sun keyboard, most
other keyboards should work with no problems.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 20 Aug 2004 22:35:23 +0000 |
parents | c5b2b6d2d1fe |
children | 19418e4422cb |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2003 Sam Lantinga 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 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_QuartzVideo.h" #include "SDL_QuartzWindow.h" #include "SDL_yuvfuncs.h" #define yuv_idh (this->hidden->yuv_idh) #define yuv_matrix (this->hidden->yuv_matrix) #define yuv_codec (this->hidden->yuv_codec) #define yuv_seq (this->hidden->yuv_seq) #define yuv_pixmap (this->hidden->yuv_pixmap) #define yuv_data (this->hidden->yuv_data) #define yuv_width (this->hidden->yuv_width) #define yuv_height (this->hidden->yuv_height) #define yuv_port (this->hidden->yuv_port) static int QZ_LockYUV (_THIS, SDL_Overlay *overlay) { return 0; } static void QZ_UnlockYUV (_THIS, SDL_Overlay *overlay) { ; } static int QZ_DisplayYUV (_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) { OSErr err; CodecFlags flags; if (dstrect->x != 0 || dstrect->y != 0) { SDL_SetError ("Need a dstrect at (0,0)"); return -1; } if (dstrect->w != yuv_width || dstrect->h != yuv_height) { Fixed scale_x, scale_y; scale_x = FixDiv ( Long2Fix (dstrect->w), Long2Fix (overlay->w) ); scale_y = FixDiv ( Long2Fix (dstrect->h), Long2Fix (overlay->h) ); SetIdentityMatrix (yuv_matrix); ScaleMatrix (yuv_matrix, scale_x, scale_y, Long2Fix (0), Long2Fix (0)); SetDSequenceMatrix (yuv_seq, yuv_matrix); yuv_width = dstrect->w; yuv_height = dstrect->h; } if( ( err = DecompressSequenceFrameS( yuv_seq, (void*)yuv_pixmap, sizeof (PlanarPixmapInfoYUV420), codecFlagUseImageBuffer, &flags, nil ) != noErr ) ) { SDL_SetError ("DecompressSequenceFrameS failed"); } return err == noErr; } static void QZ_FreeHWYUV (_THIS, SDL_Overlay *overlay) { CDSequenceEnd (yuv_seq); ExitMovies(); free (overlay->hwfuncs); free (overlay->pitches); free (overlay->pixels); if (SDL_VideoSurface->flags & SDL_FULLSCREEN) { [ qz_window close ]; qz_window = nil; } free (yuv_matrix); DisposeHandle ((Handle)yuv_idh); } /* check for 16 byte alignment, bail otherwise */ #define CHECK_ALIGN(x) do { if ((Uint32)x & 15) { SDL_SetError("Alignment error"); return NULL; } } while(0) /* align a byte offset, return how much to add to make it a multiple of 16 */ #define ALIGN(x) ((16 - (x & 15)) & 15) SDL_Overlay* QZ_CreateYUVOverlay (_THIS, int width, int height, Uint32 format, SDL_Surface *display) { Uint32 codec; OSStatus err; CGrafPtr port; SDL_Overlay *overlay; if (format == SDL_YV12_OVERLAY || format == SDL_IYUV_OVERLAY) { codec = kYUV420CodecType; } else { SDL_SetError ("Hardware: unsupported video format"); return NULL; } yuv_idh = (ImageDescriptionHandle) NewHandleClear (sizeof(ImageDescription)); if (yuv_idh == NULL) { SDL_OutOfMemory(); return NULL; } yuv_matrix = (MatrixRecordPtr) malloc (sizeof(MatrixRecord)); if (yuv_matrix == NULL) { SDL_OutOfMemory(); return NULL; } if ( EnterMovies() != noErr ) { SDL_SetError ("Could not init QuickTime for YUV playback"); return NULL; } err = FindCodec (codec, bestSpeedCodec, nil, &yuv_codec); if (err != noErr) { SDL_SetError ("Could not find QuickTime codec for format"); return NULL; } if (SDL_VideoSurface->flags & SDL_FULLSCREEN) { /* Acceleration requires a window to be present. A CGrafPtr that points to the screen isn't good enough */ NSRect content = NSMakeRect (0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h); qz_window = [ [ SDL_QuartzWindow alloc ] initWithContentRect:content styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:NO ]; if (qz_window == nil) { SDL_SetError ("Could not create the Cocoa window"); return NULL; } [ qz_window setContentView:[ [ NSQuickDrawView alloc ] init ] ]; [ qz_window setReleasedWhenClosed:YES ]; [ qz_window center ]; [ qz_window setAcceptsMouseMovedEvents:YES ]; [ qz_window setLevel:CGShieldingWindowLevel() ]; [ qz_window makeKeyAndOrderFront:nil ]; port = [ [ qz_window contentView ] qdPort ]; SetPort (port); /* BUG: would like to remove white flash when window kicks in { Rect r; SetRect (&r, 0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h); PaintRect (&r); QDFlushPortBuffer (port, nil); } */ } else { port = [ window_view qdPort ]; SetPort (port); } SetIdentityMatrix (yuv_matrix); HLock ((Handle)yuv_idh); (**yuv_idh).idSize = sizeof(ImageDescription); (**yuv_idh).cType = codec; (**yuv_idh).version = 1; (**yuv_idh).revisionLevel = 0; (**yuv_idh).width = width; (**yuv_idh).height = height; (**yuv_idh).hRes = Long2Fix(72); (**yuv_idh).vRes = Long2Fix(72); (**yuv_idh).spatialQuality = codecLosslessQuality; (**yuv_idh).frameCount = 1; (**yuv_idh).clutID = -1; (**yuv_idh).dataSize = 0; (**yuv_idh).depth = 24; HUnlock ((Handle)yuv_idh); err = DecompressSequenceBeginS ( &yuv_seq, yuv_idh, NULL, 0, port, NULL, NULL, yuv_matrix, 0, NULL, codecFlagUseImageBuffer, codecLosslessQuality, yuv_codec); if (err != noErr) { SDL_SetError ("Error trying to start YUV codec."); return NULL; } overlay = (SDL_Overlay*) malloc (sizeof(*overlay)); if (overlay == NULL) { SDL_OutOfMemory(); return NULL; } overlay->format = format; overlay->w = width; overlay->h = height; overlay->planes = 3; overlay->hw_overlay = 1; { int offset; Uint8 **pixels; Uint16 *pitches; int plane2, plane3; if (format == SDL_IYUV_OVERLAY) { plane2 = 1; /* Native codec format */ plane3 = 2; } else if (format == SDL_YV12_OVERLAY) { /* switch the U and V planes */ plane2 = 2; /* U plane maps to plane 3 */ plane3 = 1; /* V plane maps to plane 2 */ } else { SDL_SetError("Unsupported YUV format"); return NULL; } pixels = (Uint8**) malloc (sizeof(*pixels) * 3); pitches = (Uint16*) malloc (sizeof(*pitches) * 3); if (pixels == NULL || pitches == NULL) { SDL_OutOfMemory(); return NULL; } yuv_pixmap = (PlanarPixmapInfoYUV420*) malloc (sizeof(PlanarPixmapInfoYUV420) + (width * height * 2)); if (yuv_pixmap == NULL) { SDL_OutOfMemory (); return NULL; } /* CHECK_ALIGN(yuv_pixmap); */ offset = sizeof(PlanarPixmapInfoYUV420); /* offset += ALIGN(offset); */ /* CHECK_ALIGN(offset); */ pixels[0] = (Uint8*)yuv_pixmap + offset; /* CHECK_ALIGN(pixels[0]); */ pitches[0] = width; yuv_pixmap->componentInfoY.offset = offset; yuv_pixmap->componentInfoY.rowBytes = width; offset += width * height; pixels[plane2] = (Uint8*)yuv_pixmap + offset; pitches[plane2] = width / 2; yuv_pixmap->componentInfoCb.offset = offset; yuv_pixmap->componentInfoCb.rowBytes = width / 2; offset += (width * height / 4); pixels[plane3] = (Uint8*)yuv_pixmap + offset; pitches[plane3] = width / 2; yuv_pixmap->componentInfoCr.offset = offset; yuv_pixmap->componentInfoCr.rowBytes = width / 2; overlay->pixels = pixels; overlay->pitches = pitches; } overlay->hwfuncs = malloc (sizeof(*overlay->hwfuncs)); if (overlay->hwfuncs == NULL) { SDL_OutOfMemory(); return NULL; } overlay->hwfuncs->Lock = QZ_LockYUV; overlay->hwfuncs->Unlock = QZ_UnlockYUV; overlay->hwfuncs->Display = QZ_DisplayYUV; overlay->hwfuncs->FreeHW = QZ_FreeHWYUV; yuv_width = overlay->w; yuv_height = overlay->h; return overlay; }