return get_black_frame();
}
+ jpeg_save_markers(&dinfo, JPEG_APP0 + 1, 0xFFFF);
+
if (dinfo.num_components != 3) {
fprintf(stderr, "Not a color JPEG. (%d components, Y=%dx%d, Cb=%dx%d, Cr=%dx%d)\n",
dinfo.num_components,
frame->pitch_y = luma_width_blocks * DCTSIZE;
frame->pitch_chroma = chroma_width_blocks * DCTSIZE;
+ if (dinfo.marker_list != nullptr &&
+ dinfo.marker_list->marker == JPEG_APP0 + 1 &&
+ dinfo.marker_list->data_length >= 4 &&
+ memcmp(dinfo.marker_list->data, "Exif", 4) == 0) {
+ frame->exif_data.assign(reinterpret_cast<char *>(dinfo.marker_list->data),
+ dinfo.marker_list->data_length);
+ }
+
if (!error_mgr.run([&dinfo, &frame, v_mcu_size, mcu_height_blocks] {
JSAMPROW yptr[v_mcu_size], cbptr[v_mcu_size], crptr[v_mcu_size];
JSAMPARRAY data[3] = { yptr, cbptr, crptr };
overlay_input->set_width(overlay_width);
overlay_input->set_height(overlay_height);
overlay_input->set_pixel_data(overlay_image->bits());
+ overlay_input_needs_refresh = false;
}
glViewport(gl_width - overlay_width, 0, overlay_width, overlay_height);
overlay_chain->render_to_screen();
return;
}
+ // Figure out how large the texture needs to be.
+ {
+ QImage img(overlay_width, overlay_height, QImage::Format_Grayscale8);
+ QPainter painter(&img);
+ QFont font = painter.font();
+ font.setPointSize(12);
+ QFontMetrics metrics(font);
+ overlay_base_width = lrint(metrics.boundingRect(QString::fromStdString(text)).width() + 8.0);
+ overlay_base_height = lrint(metrics.height());
+ }
+
float dpr = QGuiApplication::primaryScreen()->devicePixelRatio();
overlay_width = lrint(overlay_base_width * dpr);
overlay_height = lrint(overlay_base_height * dpr);
+ // Work around OpenGL alignment issues.
+ while (overlay_width % 4 != 0) ++overlay_width;
+
+ // Now do the actual drawing.
overlay_image.reset(new QImage(overlay_width, overlay_height, QImage::Format_Grayscale8));
overlay_image->setDevicePixelRatio(dpr);
overlay_image->fill(0);