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view src/video/photon/SDL_phyuv.c @ 1982:3b4ce57c6215

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First shot at new audio data types (int32 and float32). Notable changes: - Converters between types are autogenerated. Instead of making multiple passes over the data with seperate filters for endianess, size, signedness, etc, converting between data types is always one specialized filter. This simplifies SDL_BuildAudioCVT(), which otherwise had a million edge cases with the new types, and makes the actually conversions more CPU cache friendly. Left a stub for adding specific optimized versions of these routines (SSE/MMX/Altivec, assembler, etc) - Autogenerated converters are built by SDL/src/audio/sdlgenaudiocvt.pl. This does not need to be run unless tweaking the code, and thus doesn't need integration into the build system. - Went through all the drivers and tried to weed out all the "Uint16" references that are better specified with the new SDL_AudioFormat typedef. - Cleaned out a bunch of hardcoded bitwise magic numbers and replaced them with new SDL_AUDIO_* macros. - Added initial float32 and int32 support code. Theoretically, existing drivers will push these through converters to get the data they want to feed to the hardware. Still TODO: - Optimize and debug new converters. - Update the CoreAudio backend to accept float32 data directly. - Other backends, too? - SDL_LoadWAV() needs to be updated to support int32 and float32 .wav files (both of which exist and can be generated by 'sox' for testing purposes). - Update the mixer to handle new datatypes. - Optionally update SDL_sound and SDL_mixer, etc.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 24 Aug 2006 12:10:46 +0000
parents c121d94672cb
children e27bdcc80744 204be4fc2726
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);
}

/* vi: set ts=4 sw=4 expandtab: */