view src/video/photon/SDL_phyuv.c @ 3978:b966761fef6c SDL-1.2

Significantly improved XIM support. Fixes Bugzilla #429. Selected notes from the patch's README: = FIXES = This patch fixes the above issues as follows. == X11 events == Moved XFilterEvent just after XNextEvent so that all events are passed to it. Also, XFilterEvent will receive masks indicated by IM through XNFilterEvents IC value as well as masks surpplied by SDL. X11_KeyRepeat is called between XNextEvent and XFilterEvent, after testing an event is a KeyRelease. I'm not 100% comfortable to do so, but I couldn't find a better timing to call it, and use of the function is inevitable. == Xutf8LookupString == Used a longer buffer to receive UTF-8 string. If it is insufficient, a dynamic storage of the requested size will be allocated. The initial size of the buffer is set to 32, because the Japanese text converted from the most widely used benchmark key sequence for Japanese IM, "WATASHINONAMAEHANAKANODESU." has ten Japanese characters in it, that occupies 30 bytes when encoded in UTF-8. == SDL_keysym.unicode == On Windows version of SDL implementation, SDL_keysym.unicode stores UTF-16 encoded unicode characters, one UTF-16 encoding unit per an SDL event. A Unicode supplementary characters are sent to an application as two events. (One with a high surrogate and another with a low surrogate.) The behavior seems reasonable since it is upward compatible with existing handling of BMP characters. I wrote a UTF-8 to UTF-16 conversion function for the purpose. It is designed with the execution speed in mind, having a minimum set of features that my patch requires.
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 25 Jun 2007 19:58:32 +0000
parents 51038e80ae59
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

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

#include <errno.h>

#include <Ph.h>
#include <Pt.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->vplane1);
    Frame1->U = (unsigned char *)PdGetOffscreenContextPtr(channel->vplane2);
    Frame0->V = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane1);
    Frame1->V = (unsigned char *)PdGetOffscreenContextPtr(channel->uplane2);

    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 = SDL_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 = SDL_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 *) SDL_calloc(1, sizeof(FRAMEDATA));
    overlay->hwdata->FrameData1 = (FRAMEDATA *) SDL_calloc(1, sizeof(FRAMEDATA));

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

    do {
        SDL_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->vplane1 != NULL)
        overlay->hwdata->UStride = overlay->hwdata->channel->vplane1->pitch;
    if(overlay->hwdata->channel->uplane1 != NULL)
        overlay->hwdata->VStride = overlay->hwdata->channel->uplane1->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 = SDL_calloc(overlay->planes, sizeof(Uint16));
    overlay->pixels  = SDL_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->vplane1->pitch;
        overlay->pixels[1]  = overlay->hwdata->CurrentFrameData->U;
    }
    if (overlay->planes > 2)
    {
        overlay->pitches[2] = overlay->hwdata->channel->uplane1->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* src, SDL_Rect* dst)
{
    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 != dst->x) ||
        (overlay->hwdata->CurrentViewPort.pos.y != dst->y) ||
        (overlay->hwdata->CurrentViewPort.size.w != dst->w) ||
        (overlay->hwdata->CurrentViewPort.size.h != dst->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(dst->x, dst->y, dst->x+dst->w-1, dst->y+dst->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+dst->x;
        overlay->hwdata->CurrentViewPort.pos.y = pos.y-windowextent.ul.y+dst->y;
        overlay->hwdata->CurrentViewPort.size.w = dst->w;
        overlay->hwdata->CurrentViewPort.size.h = dst->h;
        PhAreaToRect(&overlay->hwdata->CurrentViewPort, &overlay->hwdata->props.viewport);
        overlay->hwdata->CurrentViewPort.pos.x = dst->x;
        overlay->hwdata->CurrentViewPort.pos.y = dst->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;  
	
    SDL_free(overlay->hwdata->FrameData0);
    SDL_free(overlay->hwdata->FrameData1);
    overlay->hwdata->FrameData0 = NULL;
    overlay->hwdata->FrameData1 = NULL;
    SDL_free(overlay->hwdata);
}