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Date: Wed, 23 Jun 2004 17:05:33 -0400 From: Chris Nelson Subject: [SDL] [Patch] WiseGroup MP-8800 / MP-8866 (PS2 Joystick) In the current cvs version, SDL doesn't handle these Playstation2 controller => USB adapters correctly, in linux. It will always assume that the maximum number of joysticks (2 in the case of the MP-8866, 4 in the case of the 8800) are plugged in. This is bad not only because it allows SDL to exaggerate the number of logical joysticks, but primarily because the joystick axes are mapped incorrectly, all over the place, such that the devices are effectively unusable unless you have the maximum number of joysticks plugged in. My changes to src/joystick/linux/SDL_sysjoystick.c build on another's previous work (which was a special case for this very joystick, actually), and fix both of these problems, as well as making the current code a little more general, to allow for others to more easily drop in code for quirky joysticks such as these. I've tested this code under 2.6.7 as well as 2.4.24... Both work as advertised (provided you load the JOYDEV linux code as a module, otherwise they won't work at all, new code or old, but that's another issue entirely). Though this sounds horribly formal, you have my permission to distribute all of my work on this issue under the LGPL. So there.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 25 Jul 2004 18:31:50 +0000
parents 05c551e5bc64
children c07c6ef7c93e
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 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
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* This is the QNX Realtime Platform version of SDL YUV video overlays */

#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <Ph.h>
#include <Pt.h>

#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_phyuv_c.h"
#include "SDL_yuvfuncs.h"

#define OVERLAY_STATE_UNINIT 0
#define OVERLAY_STATE_ACTIVE 1

/* The functions are used to manipulate software video overlays */
static struct private_yuvhwfuncs ph_yuvfuncs =
{
    ph_LockYUVOverlay,
    ph_UnlockYUVOverlay,
    ph_DisplayYUVOverlay,
    ph_FreeYUVOverlay
};

int grab_ptrs2(PgVideoChannel_t* channel, FRAMEDATA* Frame0, FRAMEDATA* Frame1)
{
    int planes = 0;

    /* Buffers have moved; re-obtain the pointers */
    Frame0->Y = (unsigned char *)PdGetOffscreenContextPtr(channel->yplane1);
    Frame1->Y = (unsigned char *)PdGetOffscreenContextPtr(channel->yplane2);
    Frame0->U = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane1);
    Frame1->U = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane2);
    Frame0->V = (unsigned char *)PdGetOffscreenContextPtr(channel->vplane1);
    Frame1->V = (unsigned char *)PdGetOffscreenContextPtr(channel->vplane2);

    if (Frame0->Y)
        planes++;

    if (Frame0->U)
        planes++;

    if (Frame0->V)
        planes++;

    return planes;
}

SDL_Overlay* ph_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface* display)
{
    SDL_Overlay* overlay;
    struct private_yuvhwdata* hwdata;
    int vidport;
    int rtncode;
    int planes;
    int i=0;
    PhPoint_t pos;

    /* Create the overlay structure */
    overlay = calloc(1, sizeof(SDL_Overlay));

    if (overlay == NULL)
    {
        SDL_OutOfMemory();
        return NULL;
    }

    /* Fill in the basic members */
    overlay->format = format;
    overlay->w = width;
    overlay->h = height;
    overlay->hwdata = NULL;
	
    /* Set up the YUV surface function structure */
    overlay->hwfuncs = &ph_yuvfuncs;

    /* Create the pixel data and lookup tables */
    hwdata = calloc(1, sizeof(struct private_yuvhwdata));

    if (hwdata == NULL)
    {
        SDL_OutOfMemory();
        SDL_FreeYUVOverlay(overlay);
        return NULL;
    }

    overlay->hwdata = hwdata;

    PhDCSetCurrent(0);
    if (overlay->hwdata->channel == NULL)
    {
        if ((overlay->hwdata->channel = PgCreateVideoChannel(Pg_VIDEO_CHANNEL_SCALER, 0)) == NULL)
        {
            SDL_SetError("ph_CreateYUVOverlay(): Create channel failed: %s\n", strerror(errno));
            SDL_FreeYUVOverlay(overlay);
            return NULL;

        }
    }

    overlay->hwdata->forcedredraw=0;

    PtGetAbsPosition(window, &pos.x, &pos.y);
    overlay->hwdata->CurrentWindowPos.x = pos.x;
    overlay->hwdata->CurrentWindowPos.y = pos.y;
    overlay->hwdata->CurrentViewPort.pos.x = 0;
    overlay->hwdata->CurrentViewPort.pos.y = 0;
    overlay->hwdata->CurrentViewPort.size.w = width;
    overlay->hwdata->CurrentViewPort.size.h = height;
    overlay->hwdata->State = OVERLAY_STATE_UNINIT;
    overlay->hwdata->FrameData0 = (FRAMEDATA *) calloc(1, sizeof(FRAMEDATA));
    overlay->hwdata->FrameData1 = (FRAMEDATA *) calloc(1, sizeof(FRAMEDATA));

    vidport = -1;
    i=0;
    
    overlay->hwdata->ischromakey=0;

    do {
        memset(&overlay->hwdata->caps, 0x00, sizeof(PgScalerCaps_t));
        overlay->hwdata->caps.size = sizeof(PgScalerCaps_t);
        rtncode = PgGetScalerCapabilities(overlay->hwdata->channel, i, &overlay->hwdata->caps);
        if (rtncode==0)
        { 
            if (overlay->hwdata->caps.format==format)
            {
               if ((overlay->hwdata->caps.flags & Pg_SCALER_CAP_DST_CHROMA_KEY) == Pg_SCALER_CAP_DST_CHROMA_KEY)
               {
                   overlay->hwdata->ischromakey=1;
               }
               vidport=1;
               break;
            }
        }
        else
        {
           break;
        }
        i++;
    } while(1);


    if (vidport == -1)
    {
        SDL_SetError("No available video ports for requested format\n");
        SDL_FreeYUVOverlay(overlay);
        return NULL;
    }

    overlay->hwdata->format = format;
    overlay->hwdata->props.format = format;
    overlay->hwdata->props.size = sizeof(PgScalerProps_t);
    overlay->hwdata->props.src_dim.w = width;
    overlay->hwdata->props.src_dim.h = height;

    /* overlay->hwdata->chromakey = PgGetOverlayChromaColor(); */
    overlay->hwdata->chromakey = PgRGB(12, 6, 12); /* very dark pink color */
    overlay->hwdata->props.color_key = overlay->hwdata->chromakey;

    PhAreaToRect(&overlay->hwdata->CurrentViewPort, &overlay->hwdata->props.viewport);

    overlay->hwdata->props.flags = Pg_SCALER_PROP_DOUBLE_BUFFER;

    if ((overlay->hwdata->ischromakey)&&(overlay->hwdata->chromakey))
    {
        overlay->hwdata->props.flags |= Pg_SCALER_PROP_CHROMA_ENABLE;
        overlay->hwdata->props.flags |= Pg_SCALER_PROP_CHROMA_SPECIFY_KEY_MASK;
    } 
    else
    {
        overlay->hwdata->props.flags &= ~Pg_SCALER_PROP_CHROMA_ENABLE;
    }

    rtncode = PgConfigScalerChannel(overlay->hwdata->channel, &overlay->hwdata->props);

    switch(rtncode)
    {
        case -1: SDL_SetError("PgConfigScalerChannel failed\n");
                 SDL_FreeYUVOverlay(overlay);
                 return NULL;
        case 1:
        case 0:
        default:
                 break;
    }

    planes = grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);

    if(overlay->hwdata->channel->yplane1 != NULL)
        overlay->hwdata->YStride = overlay->hwdata->channel->yplane1->pitch;
    if(overlay->hwdata->channel->uplane1 != NULL)
        overlay->hwdata->UStride = overlay->hwdata->channel->uplane1->pitch;
    if(overlay->hwdata->channel->vplane1 != NULL)
        overlay->hwdata->VStride = overlay->hwdata->channel->vplane1->pitch;

    /* check for the validness of all planes */
    if ((overlay->hwdata->channel->yplane1 == NULL) &&
        (overlay->hwdata->channel->uplane1 == NULL) &&
        (overlay->hwdata->channel->vplane1 == NULL))
    {
       SDL_FreeYUVOverlay(overlay);
       SDL_SetError("PgConfigScaler() returns all planes equal NULL\n");
       return NULL;
    }
/*
    overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);

    if (overlay->hwdata->current==0)
    {
        overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;
    }
    else
    {
        overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData1;
    }
*/
    overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;

/*
    overlay->hwdata->locked = 1;
*/

    /* Find the pitch and offset values for the overlay */
    overlay->planes = planes;
    overlay->pitches = calloc(overlay->planes, sizeof(Uint16));
    overlay->pixels  = calloc(overlay->planes, sizeof(Uint8*));
    if (!overlay->pitches || !overlay->pixels)
    {
        SDL_OutOfMemory();
        SDL_FreeYUVOverlay(overlay);
        return(NULL);
    }

    if (overlay->planes > 0)
    {
        overlay->pitches[0] = overlay->hwdata->channel->yplane1->pitch;
        overlay->pixels[0]  = overlay->hwdata->CurrentFrameData->Y;
    }
    if (overlay->planes > 1)
    {
        overlay->pitches[1] = overlay->hwdata->channel->uplane1->pitch;
        overlay->pixels[1]  = overlay->hwdata->CurrentFrameData->U;
    }
    if (overlay->planes > 2)
    {
        overlay->pitches[2] = overlay->hwdata->channel->vplane1->pitch;
        overlay->pixels[2]  = overlay->hwdata->CurrentFrameData->V;
    }

    overlay->hwdata->State = OVERLAY_STATE_ACTIVE;
    overlay->hwdata->scaler_on = 0;
    overlay->hw_overlay = 1;

    current_overlay=overlay;

    return overlay;
}

int ph_LockYUVOverlay(_THIS, SDL_Overlay* overlay)
{
    if (overlay == NULL)
    {
        return -1;
    }

    overlay->hwdata->locked = 1;

/*  overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);
    if (overlay->hwdata->current == -1)
    {
        SDL_SetError("ph_LockYUVOverlay: PgNextFrame() failed, bailing out\n");
        SDL_FreeYUVOverlay(overlay);
        return 0;
    }

    if (overlay->hwdata->current == 0)
    {
        overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;
    }
    else
    {
        overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData1;
    }

    if (overlay->planes > 0)
    {
        overlay->pitches[0] = overlay->hwdata->channel->yplane1->pitch;
        overlay->pixels[0]  = overlay->hwdata->CurrentFrameData->Y;
    }
    if (overlay->planes > 1)
    {
        overlay->pitches[1] = overlay->hwdata->channel->uplane1->pitch;
        overlay->pixels[1]  = overlay->hwdata->CurrentFrameData->U;
    }
    if (overlay->planes > 2)
    {
        overlay->pitches[2] = overlay->hwdata->channel->vplane1->pitch;
        overlay->pixels[2]  = overlay->hwdata->CurrentFrameData->V;
    }
*/

    return(0);
}

void ph_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay)
{
    if (overlay == NULL)
    {
        return;
    }

    overlay->hwdata->locked = 0;
}

int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
{
    int rtncode;
    PhPoint_t pos;
    SDL_Rect backrect;
    PhRect_t windowextent;
    int winchanged=0;

    if ((overlay == NULL) || (overlay->hwdata==NULL))
    {
        return -1;
    }

    if (overlay->hwdata->State == OVERLAY_STATE_UNINIT)
    {
        return -1;
    }

    PtGetAbsPosition(window, &pos.x, &pos.y);
    if ((pos.x!=overlay->hwdata->CurrentWindowPos.x) ||
        (pos.y!=overlay->hwdata->CurrentWindowPos.y))
    {
       winchanged=1;
       overlay->hwdata->CurrentWindowPos.x=pos.x;
       overlay->hwdata->CurrentWindowPos.y=pos.y;
    }

    /* If CurrentViewPort position/size has been changed, then move/resize the viewport */
    if ((overlay->hwdata->CurrentViewPort.pos.x != dstrect->x) ||
        (overlay->hwdata->CurrentViewPort.pos.y != dstrect->y) ||
        (overlay->hwdata->CurrentViewPort.size.w != dstrect->w) ||
        (overlay->hwdata->CurrentViewPort.size.h != dstrect->h) ||
        (overlay->hwdata->scaler_on==0) || (winchanged==1) ||
        (overlay->hwdata->forcedredraw==1))
    {

        if (overlay->hwdata->ischromakey==1)
        {
            /* restore screen behind the overlay/chroma color. */
            backrect.x=overlay->hwdata->CurrentViewPort.pos.x;
            backrect.y=overlay->hwdata->CurrentViewPort.pos.y;
            backrect.w=overlay->hwdata->CurrentViewPort.size.w;
            backrect.h=overlay->hwdata->CurrentViewPort.size.h;
            this->UpdateRects(this, 1, &backrect);

            /* Draw the new rectangle of the chroma color at the viewport position */
            PgSetFillColor(overlay->hwdata->chromakey);
            PgDrawIRect(dstrect->x, dstrect->y, dstrect->x+dstrect->w-1, dstrect->y+dstrect->h-1, Pg_DRAW_FILL);
            PgFlush();
        }

        overlay->hwdata->props.flags |= Pg_SCALER_PROP_SCALER_ENABLE;
        overlay->hwdata->scaler_on = 1;

        PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, PtWidgetRid(window), &windowextent);
        overlay->hwdata->CurrentViewPort.pos.x = pos.x-windowextent.ul.x+dstrect->x;
        overlay->hwdata->CurrentViewPort.pos.y = pos.y-windowextent.ul.y+dstrect->y;
        overlay->hwdata->CurrentViewPort.size.w = dstrect->w;
        overlay->hwdata->CurrentViewPort.size.h = dstrect->h;
        PhAreaToRect(&overlay->hwdata->CurrentViewPort, &overlay->hwdata->props.viewport);
        overlay->hwdata->CurrentViewPort.pos.x = dstrect->x;
        overlay->hwdata->CurrentViewPort.pos.y = dstrect->y;

        rtncode = PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));

        switch(rtncode)
        {
            case -1:
                     SDL_SetError("PgConfigScalerChannel() function failed\n");
                     SDL_FreeYUVOverlay(overlay);
                     return -1;
            case 1:
                     grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);
                     break;
            case 0:
            default:
                     break;
        }
    }


/*
    if (overlay->hwdata->locked==0)
    {
        overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);
        if (overlay->hwdata->current == -1)
        {
            SDL_SetError("ph_LockYUVOverlay: PgNextFrame() failed, bailing out\n");
            SDL_FreeYUVOverlay(overlay);
            return 0;
        }

        if (overlay->hwdata->current == 0)
        {
            overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData0;
        }
        else
        {
            overlay->hwdata->CurrentFrameData = overlay->hwdata->FrameData1;
        }

        if (overlay->planes > 0)
        {
            overlay->pitches[0] = overlay->hwdata->channel->yplane1->pitch;
            overlay->pixels[0]  = overlay->hwdata->CurrentFrameData->Y;
        }
        if (overlay->planes > 1)
        {
            overlay->pitches[1] = overlay->hwdata->channel->uplane1->pitch;
            overlay->pixels[1]  = overlay->hwdata->CurrentFrameData->U;
        }
        if (overlay->planes > 2)
        {
            overlay->pitches[2] = overlay->hwdata->channel->vplane1->pitch;
            overlay->pixels[2]  = overlay->hwdata->CurrentFrameData->V;
        }
    }
*/
        
    return 0;
}

void ph_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
{
    SDL_Rect backrect;

    if (overlay == NULL)
    {
        return;
    }

    if (overlay->hwdata == NULL)
    {
        return;
    }

    current_overlay=NULL;

    /* restore screen behind the overlay/chroma color. */
    backrect.x=overlay->hwdata->CurrentViewPort.pos.x;
    backrect.y=overlay->hwdata->CurrentViewPort.pos.y;
    backrect.w=overlay->hwdata->CurrentViewPort.size.w;
    backrect.h=overlay->hwdata->CurrentViewPort.size.h;
    this->UpdateRects(this, 1, &backrect);

    /* it is need for some buggy drivers, that can't hide overlay before */
    /* freeing buffer, so we got trash on the srceen                     */
    overlay->hwdata->props.flags &= ~Pg_SCALER_PROP_SCALER_ENABLE;
    PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));

    overlay->hwdata->scaler_on = 0;
    overlay->hwdata->State = OVERLAY_STATE_UNINIT;

    if (overlay->hwdata->channel != NULL)
    {
        PgDestroyVideoChannel(overlay->hwdata->channel);
        overlay->hwdata->channel = NULL;
        return;
    }	

    overlay->hwdata->CurrentFrameData = NULL;  
	
    free(overlay->hwdata->FrameData0);
    free(overlay->hwdata->FrameData1);
    overlay->hwdata->FrameData0 = NULL;
    overlay->hwdata->FrameData1 = NULL;
    free(overlay->hwdata);
}