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/*------------------------------------------------------------------------------
#
# MacOS Sample Code
#
# Written by: Eric Anderson
# AppleLink: ERIC3
#
# Display Manager sample code
#
# RequestVideo
#
# RequestVideo.h - C Header
#
# Copyright 1995 Apple Computer, Inc.
# All rights reserved.
#
# Revision History:
#
# 5/31/95 ewa Added RVGetCurrentVideoSetting and RVConfirmVideoRequest routines
# to make it easy to revert back to where you came from and to give
# the user a chance to confirm the new setting if the new mode was
# valid (ie: the card supports it) but not safe (the monitor may not).
# 5/24/95 ewa Give the kAllValidModesBit requestFlags option for safe only or all
# valid resolution timings.
#
#
#
# Components: PlayVideo.c
# RequestVideo.c
# RequestVideo.h
# RequestVideo.rsrc
#
# For information on the use of this sample code, please the documentation in the Read Me file
------------------------------------------------------------------------------*/
#include <QuickDraw.h>
#include <Video.h>
// requestFlags bit values in VideoRequestRec (example use: 1<<kAbsoluteRequestBit)
enum {
kBitDepthPriorityBit = 0, // Bit depth setting has priority over resolution
kAbsoluteRequestBit = 1, // Available setting must match request
kShallowDepthBit = 2, // Match bit depth less than or equal to request
kMaximizeResBit = 3, // Match screen resolution greater than or equal to request
kAllValidModesBit = 4 // Match display with valid timing modes (may include modes which are not marked as safe)
};
// availFlags bit values in VideoRequestRec (example use: 1<<kModeValidNotSafeBit)
enum {
kModeValidNotSafeBit = 0 // Available timing mode is valid but not safe (requires user confirmation of switch)
};
// video request structure
struct VideoRequestRec {
GDHandle screenDevice; // <in/out> nil will force search of best device, otherwise search this device only
short reqBitDepth; // <in> requested bit depth
short availBitDepth; // <out> available bit depth
unsigned long reqHorizontal; // <in> requested horizontal resolution
unsigned long reqVertical; // <in> requested vertical resolution
unsigned long availHorizontal; // <out> available horizontal resolution
unsigned long availVertical; // <out> available vertical resolution
unsigned long requestFlags; // <in> request flags
unsigned long availFlags; // <out> available mode flags
unsigned long displayMode; // <out> mode used to set the screen resolution
unsigned long depthMode; // <out> mode used to set the depth
VDSwitchInfoRec switchInfo; // <out> DM2.0 uses this rather than displayMode/depthMode combo
};
typedef struct VideoRequestRec VideoRequestRec;
typedef struct VideoRequestRec *VideoRequestRecPtr;
// Routine defines
OSErr RVRequestVideoSetting(VideoRequestRecPtr requestRecPtr);
OSErr RVGetCurrentVideoSetting(VideoRequestRecPtr requestRecPtr);
OSErr RVSetVideoRequest (VideoRequestRecPtr requestRecPtr);
OSErr RVConfirmVideoRequest (VideoRequestRecPtr requestRecPtr);
OSErr RVSetVideoAsScreenPrefs (void);
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