static void saveimage(int num)
{
fz_image *image;
fz_pixmap *pix;
pdf_obj *ref;
char buf[32];
ref = pdf_new_indirect(doc, num, 0);
/* TODO: detect DCTD and save as jpeg */
image = pdf_load_image(doc, ref);
pix = fz_new_pixmap_from_image(ctx, image, 0, 0);
fz_drop_image(ctx, image);
snprintf(buf, sizeof(buf), "img-%04d", num);
writepixmap(ctx, pix, buf, dorgb);
fz_drop_pixmap(ctx, pix);
pdf_drop_obj(ref);
}
static void
fz_test_fill_image(fz_context *ctx, fz_device *dev, fz_image *image, const fz_matrix *ctm, float alpha)
{
fz_test_device *t = (fz_test_device*)dev;
fz_pixmap *pix;
unsigned int count, i, k;
unsigned char *s;
if (*t->is_color || !image->colorspace || image->colorspace == fz_device_gray(ctx))
return;
if (image->buffer && image->bpc == 8)
{
fz_stream *stream = fz_open_compressed_buffer(ctx, image->buffer);
count = (unsigned int)image->w * (unsigned int)image->h;
if (image->colorspace == fz_device_rgb(ctx))
{
int threshold_u8 = t->threshold * 255;
for (i = 0; i < count; i++)
{
int r = fz_read_byte(ctx, stream);
int g = fz_read_byte(ctx, stream);
int b = fz_read_byte(ctx, stream);
if (is_rgb_color_u8(threshold_u8, r, g, b))
{
*t->is_color = 1;
dev->hints |= FZ_IGNORE_IMAGE;
fz_drop_stream(ctx, stream);
fz_throw(ctx, FZ_ERROR_ABORT, "Page found as color; stopping interpretation");
break;
}
}
}
else
{
fz_color_converter cc;
unsigned int n = (unsigned int)image->n;
fz_init_cached_color_converter(ctx, &cc, fz_device_rgb(ctx), image->colorspace);
for (i = 0; i < count; i++)
{
float cs[FZ_MAX_COLORS];
float ds[FZ_MAX_COLORS];
for (k = 0; k < n; k++)
cs[k] = fz_read_byte(ctx, stream) / 255.0f;
cc.convert(ctx, &cc, ds, cs);
if (is_rgb_color(t->threshold, ds[0], ds[1], ds[2]))
{
*t->is_color = 1;
dev->hints |= FZ_IGNORE_IMAGE;
break;
}
}
fz_fin_cached_color_converter(ctx, &cc);
}
fz_drop_stream(ctx, stream);
return;
}
pix = fz_new_pixmap_from_image(ctx, image, 0, 0);
if (pix == NULL) /* Should never happen really, but... */
return;
count = (unsigned int)pix->w * (unsigned int)pix->h;
s = pix->samples;
if (pix->colorspace == fz_device_rgb(ctx))
{
int threshold_u8 = t->threshold * 255;
for (i = 0; i < count; i++)
{
if (s[3] != 0 && is_rgb_color_u8(threshold_u8, s[0], s[1], s[2]))
{
*t->is_color = 1;
dev->hints |= FZ_IGNORE_IMAGE;
fz_drop_pixmap(ctx, pix);
fz_throw(ctx, FZ_ERROR_ABORT, "Page found as color; stopping interpretation");
break;
}
s += 4;
}
}
else
{
fz_color_converter cc;
unsigned int n = (unsigned int)pix->n-1;
fz_init_cached_color_converter(ctx, &cc, fz_device_rgb(ctx), pix->colorspace);
for (i = 0; i < count; i++)
{
float cs[FZ_MAX_COLORS];
float ds[FZ_MAX_COLORS];
for (k = 0; k < n; k++)
cs[k] = (*s++) / 255.0f;
if (*s++ == 0)
continue;
cc.convert(ctx, &cc, ds, cs);
if (is_rgb_color(t->threshold, ds[0], ds[1], ds[2]))
{
*t->is_color = 1;
dev->hints |= FZ_IGNORE_IMAGE;
fz_drop_pixmap(ctx, pix);
fz_throw(ctx, FZ_ERROR_ABORT, "Page found as color; stopping interpretation");
break;
}
}
fz_fin_cached_color_converter(ctx, &cc);
}
fz_drop_pixmap(ctx, pix);
}