SCI32: Add a game option to double the videos in KQ7 by default

Scaling works correctly with the Windows variant, which uses AVI files,
but the DOS variant uses Robot videos, and the way scaling is done
there is different, and is not working yet with KQ7 DOS. Nonetheless,
both versions are included in the game, so it's not a major issue.

6 files changed, 26 insertions, 2 deletions

diff --git a/engines/sci/detection.cpp b/engines/sci/detection.cpp
index e948d2ae7c..98b9891ca2 100644
--- a/engines/sci/detection.cpp
+++ b/engines/sci/detection.cpp
@@ -512,6 +512,16 @@ static const ADExtraGuiOptionsMap optionsList[] = {
 		}
 	},
 
+	// KQ7 - Upscale videos to double their size (The in-game "Full screen" video setting)
+	{
+		GAMEOPTION_UPSCALE_VIDEOS,
+	{
+		_s("Upscale videos"),
+		_s("Upscale videos to double their size"),
+		"enable_video_upscale",
+		true
+	}
+	},
 	AD_EXTRA_GUI_OPTIONS_TERMINATOR
 };
 
diff --git a/engines/sci/detection_tables.h b/engines/sci/detection_tables.h
index 08625dd8de..0e3f6a4fb9 100644
--- a/engines/sci/detection_tables.h
+++ b/engines/sci/detection_tables.h
@@ -1834,10 +1834,11 @@ static const struct ADGameDescription SciGameDescriptions[] = {
                             GUIO_LINKMUSICTOSFX, \
                             GUIO_LINKSPEECHTOSFX, \
                             GUIO_NOASPECT)
-#define GUIO_KQ7      GUIO4(GUIO_NOASPECT, \
+#define GUIO_KQ7      GUIO5(GUIO_NOASPECT, \
                             GUIO_LINKMUSICTOSFX, \
                             GUIO_LINKSPEECHTOSFX, \
-                            GAMEOPTION_HQ_VIDEO)
+                            GAMEOPTION_HQ_VIDEO, \
+                            GAMEOPTION_UPSCALE_VIDEOS)
 
 	// King's Quest 7 - English Windows (from the King's Quest Collection)
 	// Executable scanning reports "2.100.002", VERSION file reports "1.4"
diff --git a/engines/sci/engine/guest_additions.cpp b/engines/sci/engine/guest_additions.cpp
index 6e15a5259e..ed318058b3 100644
--- a/engines/sci/engine/guest_additions.cpp
+++ b/engines/sci/engine/guest_additions.cpp
@@ -191,6 +191,11 @@ void GuestAdditions::sciEngineInitGameHook() {
 	if (g_sci->getGameId() == GID_PHANTASMAGORIA2 && Common::checkGameGUIOption(GAMEOPTION_ENABLE_CENSORING, ConfMan.get("guioptions"))) {
 		_state->variables[VAR_GLOBAL][kGlobalVarPhant2CensorshipFlag] = make_reg(0, ConfMan.getBool("enable_censoring"));
 	}
+
+	if (g_sci->getGameId() == GID_KQ7 && Common::checkGameGUIOption(GAMEOPTION_UPSCALE_VIDEOS, ConfMan.get("guioptions"))) {
+		uint16 value = ConfMan.getBool("enable_video_upscale") ? 32 : 0;
+		_state->variables[VAR_GLOBAL][kGlobalVarKQ7UpscaleVideos] = make_reg(0, value);
+	}
 }
 
 void GuestAdditions::sendSelectorHook(const reg_t sendObj, Selector &selector, reg_t *argp) {
diff --git a/engines/sci/engine/savegame.cpp b/engines/sci/engine/savegame.cpp
index 08cfef14ca..6d0abf75af 100644
--- a/engines/sci/engine/savegame.cpp
+++ b/engines/sci/engine/savegame.cpp
@@ -1255,6 +1255,12 @@ void gamestate_afterRestoreFixUp(EngineState *s, int savegameId) {
 		g_sci->_gfxMenu->kernelSetAttribute(2, 1, SCI_MENU_ATTRIBUTE_ENABLED, TRUE_REG);	// Game -> Save Game
 		break;
 #ifdef ENABLE_SCI32
+	case GID_KQ7:
+		if (Common::checkGameGUIOption(GAMEOPTION_UPSCALE_VIDEOS, ConfMan.get("guioptions"))) {
+			uint16 value = ConfMan.getBool("enable_video_upscale") ? 32 : 0;
+			s->variables[VAR_GLOBAL][kGlobalVarKQ7UpscaleVideos] = make_reg(0, value);
+		}
+		break;
 	case GID_PHANTASMAGORIA2:
 		if (Common::checkGameGUIOption(GAMEOPTION_ENABLE_CENSORING, ConfMan.get("guioptions"))) {
 			s->variables[VAR_GLOBAL][kGlobalVarPhant2CensorshipFlag] = make_reg(0, ConfMan.getBool("enable_censoring"));
diff --git a/engines/sci/engine/vm.h b/engines/sci/engine/vm.h
index 19d4dea014..0e7af34165 100644
--- a/engines/sci/engine/vm.h
+++ b/engines/sci/engine/vm.h
@@ -158,6 +158,7 @@ enum GlobalVar {
 	kGlobalVarGK1Music2            = 103, // 0 to 127
 	kGlobalVarRamaCatalogFile      = 130,
 	kGlobalVarLSL6HiresGameFlags   = 137,
+	kGlobalVarKQ7UpscaleVideos     = 160,
 	kGlobalVarGK1NarratorMode      = 166, // 0 for text, 1 for speech
 	kGlobalVarRamaMusicVolume      = 176, // 0 to 16
 	kGlobalVarPhant1MusicVolume    = 187, // 0 to 15
diff --git a/engines/sci/sci.h b/engines/sci/sci.h
index 09b1f8f95a..c17eba5955 100644
--- a/engines/sci/sci.h
+++ b/engines/sci/sci.h
@@ -59,6 +59,7 @@ namespace Sci {
 #define GAMEOPTION_HQ_VIDEO                 GUIO_GAMEOPTIONS10
 #define GAMEOPTION_ENABLE_CENSORING         GUIO_GAMEOPTIONS11
 #define GAMEOPTION_LARRYSCALE               GUIO_GAMEOPTIONS12
+#define GAMEOPTION_UPSCALE_VIDEOS           GUIO_GAMEOPTIONS13
 
 struct EngineState;
 class Vocabulary;