int main( ) {
static char svg_buf[MAX_SVG];
ssize_t read_ret;
size_t read_pos = 0;
/* slurp input */
while (read_pos < MAX_SVG) {
read_ret = read(STDIN_FILENO, svg_buf + read_pos, MAX_SVG - read_pos);
if (read_ret < 0) {
perror("read");
exit(1);
} else if (read_ret == 0) {
break;
} else {
read_pos += read_ret;
}
}
/* create SVG frame */
RawFrame *svg = RsvgFrame::render_svg(svg_buf, read_pos);
/* dump raw BGRAn8 video to stdout */
fprintf(stderr, "w=%d h=%d\n", svg->w( ), svg->h( ));
svg->write_to_fd(STDOUT_FILENO);
}
RawFrame *upscale(RawFrame *in) {
RawFrame *out = new RawFrame(1920, 1080, RawFrame::CbYCrY8422);
uint8_t *scaled_1 = new uint8_t[2*1920];
uint8_t *scaled_2 = new uint8_t[2*1920];
for (int i = 0; i < out->h( ); i++) {
int src_scan = i * 4 / 9;
uint8_t *scanline_1 = in->scanline(src_scan);
uint8_t *scanline_2;
if (src_scan + 1 < in->h( )) {
scanline_2 = in->scanline(src_scan + 1);
} else {
scanline_2 = in->scanline(src_scan);
}
upscale_scanline(scaled_1, scanline_1);
upscale_scanline(scaled_2, scanline_2);
interpolate_scanline(out->scanline(i), scaled_1, scaled_2, (4 * i) % 9);
}
return out;
}