softosd.cpp

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// SPDX-License-Identifier: AGPL-3.0-or-later
 
#include "device.h"
#include "logger.h"
#include "softosd.h"
 
cSoftOsd::cSoftOsd(int left, int top, uint level, cOutputDevice *device)
    : cOsd(left, top, level),
      m_pDevice(device),
      m_osdLevel(level)
{
    LOGDEBUG2(L_OSD, "osd: %s: %dx%d%+d%+d, %d", __FUNCTION__, OsdWidth(), OsdHeight(), left, top, level);
}
 
cSoftOsd::~cSoftOsd(void)
{
    LOGDEBUG2(L_OSD, "osd: %s: level %d", __FUNCTION__, m_osdLevel);
 
    SetActive(false);   // done by SetActive(): OsdClose();
}
 
void cSoftOsd::SetActive(bool on)
{
    LOGDEBUG2(L_OSD, "osd: %s: %d level %d", __FUNCTION__, on, m_osdLevel);
 
    if (Active() == on)
        return;     // already active, no action
 
    cOsd::SetActive(on);
 
    if (on) {
        m_dirty = true;
        // only flush here if there are already bitmaps
        if (GetBitmap(0)) {
            Flush();
        }
    } else
        m_pDevice->OsdClose();
}
 
eOsdError cSoftOsd::SetAreas(const tArea * areas, int n)
{
    LOGDEBUG2(L_OSD, "osd: %s: %d areas", __FUNCTION__, n);
 
    // clear old OSD, when new areas are set
    if (!IsTrueColor()) {
        cBitmap *bitmap;
        int i;
 
        for (i = 0; (bitmap = GetBitmap(i)); i++)
            bitmap->Clean();
    }
 
    if (Active()) {
        m_pDevice->OsdClose();
        m_dirty = true;
    }
 
    return cOsd::SetAreas(areas, n);
}
 
void cSoftOsd::Flush(void)
{
    cPixmapMemory *pm;
 
    LOGDEBUG2(L_OSD, "osd: %s: level %d active %d", __FUNCTION__, m_osdLevel,
    Active());
 
    if (!Active())      // this osd is not active
        return;
 
    if (!IsTrueColor()) {
        cBitmap *bitmap;
        int i;
 
        static char warned;
 
        if (!warned) {
            LOGDEBUG2(L_OSD, "osd: %s: FIXME: should be truecolor", __FUNCTION__);
            warned = 1;
        }
 
        // draw all bitmaps
        for (i = 0; (bitmap = GetBitmap(i)); ++i) {
            uint8_t *argb;
            int xs;
            int ys;
            int x;
            int y;
            int w;
            int h;
            int x1;
            int y1;
            int x2;
            int y2;
 
            // get dirty bounding box
            if (m_dirty) {      // forced complete update
                x1 = 0;
                y1 = 0;
                x2 = bitmap->Width() - 1;
                y2 = bitmap->Height() - 1;
            } else if (!bitmap->Dirty(x1, y1, x2, y2)) {
                continue;       // nothing dirty continue
            }
 
            // convert and upload only visible dirty areas
            xs = bitmap->X0() + Left();
            ys = bitmap->Y0() + Top();
 
            // FIXME: negtative position bitmaps
            w = x2 - x1 + 1;
            h = y2 - y1 + 1;
 
            // clip to screen
            int width;
            int height;
            double videoAspect;
 
            if (xs < 0) {
                if (xs + x1 < 0) {
                    x1 -= xs + x1;
                    w += xs + x1;
                    if (w <= 0)
                        continue;
                }
                xs = 0;
            }
 
            if (ys < 0) {
                if (ys + y1 < 0) {
                    y1 -= ys + y1;
                    h += ys + y1;
                    if (h <= 0)
                        continue;
                }
                ys = 0;
            }
 
            m_pDevice->GetOsdSize(width, height, videoAspect);
            if (w > width - xs - x1) {
                w = width - xs - x1;
                if (w <= 0)
                    continue;
                x2 = x1 + w - 1;
            }
 
            if (h > height - ys - y1) {
                h = height - ys - y1;
                if (h <= 0)
                    continue;
                y2 = y1 + h - 1;
            }
 
            if (w > bitmap->Width() || h > bitmap->Height())
                LOGDEBUG2(L_OSD, "osd: %s: dirty area too big", __FUNCTION__);
 
            argb = (uint8_t *) malloc(w * h * sizeof(uint32_t));
            for (y = y1; y <= y2; ++y) {
                for (x = x1; x <= x2; ++x) {
                    ((uint32_t *) argb)[x - x1 + (y - y1) * w] =
                    bitmap->GetColor(x, y);
                }
            }
            LOGDEBUG2(L_OSD, "osd: %s: draw %dx%d%+d%+d bm", __FUNCTION__, w, h, xs + x1, ys + y1);
            m_pDevice->OsdDraw(0, 0, w, h, w * sizeof(uint32_t), argb, xs + x1, ys + y1);
 
            bitmap->Clean();
 
            // FIXME: reuse argb
            free(argb);
        }
        m_dirty = false;
        return;
    }
 
    LOCK_PIXMAPS;
    while ((pm = (dynamic_cast < cPixmapMemory * >(RenderPixmaps())))) {
        int xp;
        int yp;
        int stride;
        int x;
        int y;
        int w;
        int h;
 
        x = pm->ViewPort().X();
        y = pm->ViewPort().Y();
        w = pm->ViewPort().Width();
        h = pm->ViewPort().Height();
        stride = w * sizeof(tColor);
 
        // clip to osd
        xp = 0;
        if (x < 0) {
            xp = -x;
            w -= xp;
            x = 0;
        }
 
        yp = 0;
        if (y < 0) {
            yp = -y;
            h -= yp;
            y = 0;
        }
 
        if (w > Width() - x)
            w = Width() - x;
        if (h > Height() - y)
            h = Height() - y;
 
        x += Left();
        y += Top();
 
        // clip to screen
        int width;
        int height;
        double videoAspect;
 
        if (x < 0) {
            w += x;
            xp += -x;
            x = 0;
        }
        if (y < 0) {
            h += y;
            yp += -y;
            y = 0;
        }
 
        m_pDevice->GetOsdSize(width, height, videoAspect);
        if (w > width - x)
            w = width - x;
        if (h > height - y)
            h = height - y;
 
        LOGDEBUG2(L_OSD, "osd: %s: draw %dx%d%+d%+d*%d -> %+d%+d %p", __FUNCTION__, w, h, xp, yp, stride, x, y, pm->Data());
        m_pDevice->OsdDraw(xp, yp, w, h, stride, pm->Data(), x, y);
 
        DestroyPixmap(pm);
    }
    m_dirty = false;
}