static int
Load(void *p, AG_DataSource *ds, const AG_Version *ver)
{
VG_Text *vt = p;
if ((vt->p1 = VG_ReadRef(ds, vt, "Point")) == NULL ||
(vt->p2 = VG_ReadRef(ds, vt, "Point")) == NULL)
return (-1);
vt->align = (enum vg_alignment)AG_ReadUint8(ds);
AG_CopyString(vt->fontFace, ds, sizeof(vt->fontFace));
vt->fontSize = (int)AG_ReadUint8(ds);
vt->fontFlags = (Uint)AG_ReadUint16(ds);
AG_CopyString(vt->text, ds, sizeof(vt->text));
return (0);
}
int
M_PolyhedronRead(AG_DataSource *ds, M_Polyhedron *P)
{
Uint i, j;
P->nv = (Uint)AG_ReadUint32(ds);
P->ne = (Uint)AG_ReadUint32(ds);
P->nf = (Uint)AG_ReadUint32(ds);
if ((P->v = TryMalloc(P->nv*sizeof(M_Vector3))) == NULL ||
(P->e = TryMalloc(P->ne*sizeof(M_Halfedge))) == NULL ||
(P->f = TryMalloc(P->nf*sizeof(M_Facet))) == NULL)
goto fail;
/* Read vertices */
for (i = 0; i < P->nv; i++)
P->v[i] = M_ReadVector3(ds);
/* Read edges */
for (i = 0; i < P->ne; i+=2) {
M_Halfedge *eHead = &P->e[i];
M_Halfedge *eTail = &P->e[i+1];
eHead->v = (Uint)AG_ReadUint32(ds);
eTail->v = (Uint)AG_ReadUint32(ds);
if (eHead->v >= P->nv || eTail->v >= P->nv) {
AG_SetError("Edge%d: Bad vertex %d", i, eHead->v);
goto fail;
}
eHead->f = (Uint)AG_ReadUint32(ds);
eTail->f = (Uint)AG_ReadUint32(ds);
if (eHead->f >= P->nf || eTail->f >= P->nf) {
AG_SetError("Edge%d: Bad facet %d", i, eHead->f);
goto fail;
}
eHead->oe = i+1;
eTail->oe = i;
}
/* Read facets */
for (i = 0; i < P->nf; i++) {
M_Facet *f = &P->f[i];
f->n = (Uint)AG_ReadUint8(ds);
if ((f->e = TryMalloc(f->n*sizeof(Uint))) == NULL) {
goto fail;
}
for (j = 0; j < f->n; j++) {
f->e[j] = (Uint)AG_ReadUint32(ds);
if (f->e[j] >= P->ne) {
AG_SetError("Facet%d[%d]: Bad incident edge %d",
i, j, f->e[j]);
goto fail;
}
}
}
return (0);
fail:
return (-1);
}
int
RG_FillLoad(void *p, AG_DataSource *buf)
{
struct rg_fill_feature *f = p;
if (AG_ReadVersion(buf, "RG_Feature:RG_Fill", &rgFillVer, NULL) == -1)
return (-1);
f->type = (enum rg_fill_type)AG_ReadUint8(buf);
switch (f->type) {
case FILL_SOLID:
f->f_solid.c = AG_ReadColor(buf);
break;
case FILL_HGRADIENT:
case FILL_VGRADIENT:
case FILL_CGRADIENT:
f->f_gradient.c1 = AG_ReadColor(buf);
f->f_gradient.c2 = AG_ReadColor(buf);
break;
case FILL_PATTERN:
f->f_pattern.texid = (int)AG_ReadUint32(buf);
f->f_pattern.tex_xoffs = (int)AG_ReadUint32(buf);
f->f_pattern.tex_yoffs = (int)AG_ReadUint32(buf);
break;
}
return (0);
}
static int
Load(void *p, AG_DataSource *ds, const AG_Version *ver)
{
#ifdef AG_DEBUG
agDebugLvl = AG_ReadUint8(ds);
#else
(void)AG_ReadUint8(ds);
#endif
/* For backward compatibility with <9.5 (pre-1.4.2) saves. */
if (ver->minor < 2) { AG_ReadUint8(ds); }
(void)AG_ReadUint8(ds);
if (ver->minor >= 3) { AG_ReadUint8(ds); }
if (ver->minor >= 4) { AG_ReadUint32(ds); }
AG_Seek(ds, 22, AG_SEEK_CUR);
if (ver->minor >= 1) { AG_ReadUint8(ds); }
(void)AG_ReadUint8(ds); /* agRcsMode */
AG_SkipString(ds); /* agRcsHostname */
(void)AG_ReadUint16(ds); /* agRcsPort */
AG_SkipString(ds); /* agRcsUsername */
AG_SkipString(ds); /* agRcsPassword */
return (0);
}
/*
* Load surface contents from a Windows BMP file.
*
* Code for expanding 1bpp and 4bpp to 8bpp depth was shamefully
* stolen from SDL.
*/
AG_Surface *
AG_ReadSurfaceFromBMP(AG_DataSource *ds)
{
struct ag_bmp_header bh;
struct ag_bmp_info_header bi;
Uint32 Rmask = 0, Gmask = 0, Bmask = 0, Amask = 0;
AG_Surface *s;
off_t offs;
Uint8 *pStart, *pEnd, *pDst;
int i, bmpPitch, expandBpp, bmpPad, topDown;
offs = AG_Tell(ds);
bh.magic[0] = '?';
bh.magic[1] = '?';
if (AG_Read(ds, bh.magic, 2) != 0 ||
bh.magic[0] != 'B' || bh.magic[1] != 'M') {
AG_SetError("Not a Windows BMP file (`%c%c')",
bh.magic[0], bh.magic[1]);
return (NULL);
}
/* Uses little-endian byte order */
AG_SetByteOrder(ds, AG_BYTEORDER_LE);
bh.size = AG_ReadUint32(ds);
bh.resv[0] = AG_ReadUint16(ds);
bh.resv[1] = AG_ReadUint16(ds);
bh.offBits = AG_ReadUint32(ds);
bi.size = AG_ReadUint32(ds);
if (bi.size == 12) {
bi.w = (Uint32)AG_ReadUint16(ds);
bi.h = (Uint32)AG_ReadUint16(ds);
bi.planes = AG_ReadUint16(ds);
bi.bitCount = AG_ReadUint16(ds);
bi.encoding = AG_BMP_RGB;
bi.sizeImage = 0;
bi.XPelsPerMeter = 0;
bi.YPelsPerMeter = 0;
bi.clrUsed = 0;
bi.clrImportant = 0;
} else {
bi.w = AG_ReadSint32(ds);
bi.h = AG_ReadSint32(ds);
bi.planes = AG_ReadUint16(ds);
bi.bitCount = AG_ReadUint16(ds);
bi.encoding = AG_ReadUint32(ds);
bi.sizeImage = AG_ReadUint32(ds);
bi.XPelsPerMeter = AG_ReadUint32(ds);
bi.YPelsPerMeter = AG_ReadUint32(ds);
bi.clrUsed = AG_ReadUint32(ds);
bi.clrImportant = AG_ReadUint32(ds);
}
if (bi.h < 0) {
topDown = 1;
bi.h = -bi.h;
} else {
topDown = 0;
}
/* Will convert 1bpp/4bpp to 8bpp */
if (bi.bitCount == 1 || bi.bitCount == 4) {
expandBpp = bi.bitCount;
bi.bitCount = 8;
} else {
expandBpp = 0;
}
switch (bi.encoding) {
case AG_BMP_RGB:
if (bh.offBits == (14 + bi.size)) {
switch (bi.bitCount) {
case 15:
case 16:
Rmask = 0x7C00;
Gmask = 0x03E0;
Bmask = 0x001F;
break;
case 24:
#if AG_BYTEORDER == AG_BIG_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
break;
#endif
case 32:
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
break;
}
break;
}
/* FALLTHROUGH */
case AG_BMP_BITFIELDS:
switch (bi.bitCount) {
case 15:
case 16:
Rmask = AG_ReadUint32(ds);
Gmask = AG_ReadUint32(ds);
Bmask = AG_ReadUint32(ds);
break;
case 32:
Rmask = AG_ReadUint32(ds);
Gmask = AG_ReadUint32(ds);
Bmask = AG_ReadUint32(ds);
Amask = AG_ReadUint32(ds);
break;
}
break;
default:
AG_SetError("BMP compression unimplemented");
return (NULL);
}
if ((s = AG_SurfaceRGBA(bi.w, bi.h, bi.bitCount,
(Amask != 0) ? AG_SRCALPHA : 0,
Rmask, Gmask, Bmask, Amask)) == NULL) {
return (NULL);
}
if (s->format->palette != NULL) {
if (bi.clrUsed == 0) {
bi.clrUsed = (1 << bi.bitCount);
}
if (bi.size == 12) {
for (i = 0; i < bi.clrUsed; i++) {
s->format->palette->colors[i].b = AG_ReadUint8(ds);
s->format->palette->colors[i].g = AG_ReadUint8(ds);
s->format->palette->colors[i].r = AG_ReadUint8(ds);
}
} else {
for (i = 0; i < bi.clrUsed; i++) {
s->format->palette->colors[i].b = AG_ReadUint8(ds);
s->format->palette->colors[i].g = AG_ReadUint8(ds);
s->format->palette->colors[i].r = AG_ReadUint8(ds);
(void)AG_ReadUint8(ds); /* unused */
}
}
s->format->palette->nColors = bi.clrUsed;
}
if (AG_Seek(ds, offs+bh.offBits, AG_SEEK_SET) == -1)
goto fail;
pStart = (Uint8 *)s->pixels;
pEnd = (Uint8 *)s->pixels + (s->h*s->pitch);
switch (expandBpp) {
case 1:
bmpPitch = (bi.w + 7) >> 3;
bmpPad = ((bmpPitch % 4) ? (4 - (bmpPitch % 4)) : 0);
break;
case 4:
bmpPitch = (bi.w + 1) >> 1;
bmpPad = ((bmpPitch % 4) ? (4 - (bmpPitch % 4)) : 0);
break;
default:
bmpPad = ((s->pitch % 4) ? (4 - (s->pitch % 4)) : 0);
break;
}
pDst = topDown ? pStart : (pEnd - s->pitch);
while (pDst >= pStart && pDst < pEnd) {
switch (expandBpp) {
case 1:
case 4:
{
Uint8 px = 0;
int shift = (8 - expandBpp);
for (i = 0; i < s->w; i++) {
if (i % (8/expandBpp) == 0) {
px = AG_ReadUint8(ds);
}
*(pDst + i) = (px >> shift);
px <<= expandBpp;
}
}
break;
default:
if (AG_Read(ds, pDst, s->pitch) != 0) {
goto fail;
}
#if AG_BYTEORDER == AG_BIG_ENDIAN
switch (bi.bitCount) {
case 15:
case 16:
{
Uint16 *px = (Uint16 *)pDst;
for (i = 0; i < s->w; i++) {
px[i] = AG_Swap16(px[i]);
}
break;
}
case 32:
{
Uint32 *px = (Uint32 *)pDst;
for (i = 0; i < s->w; i++) {
px[i] = AG_Swap32(px[i]);
}
break;
}
}
#endif /* AG_BYTEORDER == AG_BIG_ENDIAN */
break;
}
if (bmpPad != 0) {
if (AG_Seek(ds, bmpPad, AG_SEEK_CUR) == -1)
goto fail;
}
if (topDown) {
pDst += s->pitch;
} else {
pDst -= s->pitch;
}
}
return (s);
fail:
AG_SurfaceFree(s);
return (NULL);
}
