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Date: 28 Jun 2003 22:42:52 +0100 From: Alan Swanson Subject: Re: [SDL] New XFree 4.3 Video Mode Patch I have a wee amendment that moves the qsort in set_best_resolution to only occur after failing to find an exact match only. This would make absolutely sure we get a user set mode. While I've never had any problems for my normal resolutions (1280x1024, 1024x768, 800x600 & 640,480) while closely examining the output from qsort I've noticed it doesn't seem to sort the modes fully. These is one definite wrong at 1152x768 and a few that just look wrong to me. From a program (attached) I made to examine this more easily. X has sorted its mode list using the same method as ours (plus frequency), and our user modes get inserted without any other movement. On the patch I've made I've also changed cmpmodes to sort on vertical resolution and then horizontal. Ie vertical is now most significant bit.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 28 Jun 2003 21:52:26 +0000
parents 8e3ce997621c
children 8bedd6d61642
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  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 for 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 used to manipulate software video overlays */
static struct private_yuvhwfuncs ph_yuvfuncs = {
    ph_LockYUVOverlay,
    ph_UnlockYUVOverlay,
    ph_DisplayYUVOverlay,
    ph_FreeYUVOverlay
};

struct private_yuvhwdata {
    FRAMEDATA* CurrentFrameData;
    FRAMEDATA* FrameData0;
    FRAMEDATA* FrameData1;
    PgScalerProps_t   props;
    PgScalerCaps_t    caps;
    PgVideoChannel_t* channel;
    PhArea_t CurrentWindow;
    long format;
    int planar;
    int scaler_on;
    int current;
    long YStride;
    long VStride;
    long UStride;
    int ischromakey;
    long chromakey;
    unsigned long State;
    long flags;
    int locked;
};

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 xv_port;
    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;
	
    /* 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));

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

    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);

        }
    }

    PtGetAbsPosition(window, &pos.x, &pos.y);
    overlay->hwdata->CurrentWindow.pos.x = pos.x;
    overlay->hwdata->CurrentWindow.pos.y = pos.y;
    overlay->hwdata->CurrentWindow.size.w = width;
    overlay->hwdata->CurrentWindow.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));

    xv_port = -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;
               }
               xv_port=1;
               break;
            }
        }
        else
        {
           break;
        }
        i++;
    } while(1);


    if (xv_port == -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;   
	
    /* Don't use chromakey for now, blitting a surface will cover the window,
     * and therefore the chroma. */
    overlay->hwdata->chromakey = 0;
    PtSetResource(window, Pt_ARG_FILL_COLOR, overlay->hwdata->chromakey, 0);

    PhAreaToRect(&overlay->hwdata->CurrentWindow, &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.color_key = overlay->hwdata->chromakey;
        overlay->hwdata->props.color_key_mask = 0x00FFFFFFUL;
    } 
    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);
   		 break;
        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;

    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->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;

    return (overlay);
}

int ph_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
{
    if (overlay == NULL)
        return 0;

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

    overlay->hwdata->locked = 1;

    /* set current frame for double buffering */
    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)
{
    int rtncode;

    if(overlay == NULL)
         return;

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

    /* This would be the best place to draw chromakey but we do not have a SDL_Surface in the args
     * This means we might see a chromakey flicker at startup. */
}

int ph_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
{
    int rtncode;
    PhPoint_t pos;

    if(overlay == NULL)
        return -1;

    /* If CurrentWindow has change, move the viewport */
    if((overlay->hwdata->CurrentWindow.pos.x != dstrect->x) ||
       (overlay->hwdata->CurrentWindow.pos.y != dstrect->y) ||
       (overlay->hwdata->CurrentWindow.size.w != dstrect->w) ||
       (overlay->hwdata->CurrentWindow.size.h != dstrect->h) ||
       (overlay->hwdata->scaler_on==0))
    {
        if(overlay->hwdata->State == OVERLAY_STATE_UNINIT)
            return -1;

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

        PtGetAbsPosition(window, &pos.x, &pos.y);
        overlay->hwdata->CurrentWindow.pos.x = pos.x + dstrect->x;
        overlay->hwdata->CurrentWindow.pos.y = pos.y + dstrect->y;
        overlay->hwdata->CurrentWindow.size.w = dstrect->w;
        overlay->hwdata->CurrentWindow.size.h = dstrect->h;

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

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

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

    if (!overlay->hwdata->locked)
    {
        overlay->hwdata->current = PgNextVideoFrame(overlay->hwdata->channel);
        if (overlay->hwdata->current == -1)
        {
            SDL_SetError("PgNextVideoFrame failed\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)
{
    if (overlay == NULL)
        return;

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

    /* 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);
}