_first_nonexistant_frame = n;
}
- bool ok = false;
-
- while (!ok && _first_nonexistant_frame > 0) {
-
- LOG_GENERAL ("Checking first nonexistant frame %1", _first_nonexistant_frame);
-
- /* Read the data from the info file; for 3D we just check the left
- frames until we find a good one.
- */
- dcp::FrameInfo info = read_frame_info (info_file, _first_nonexistant_frame, _film->three_d () ? EYES_LEFT : EYES_BOTH);
-
- ok = true;
-
- /* Read the data from the asset and hash it */
- dcpomatic_fseek (asset_file, info.offset, SEEK_SET);
- Data data (info.size);
- size_t const read = fread (data.data().get(), 1, data.size(), asset_file);
- LOG_GENERAL ("Read %1 bytes of asset data; wanted %2", read, info.size);
- if (read != static_cast<size_t> (data.size ())) {
- LOG_GENERAL ("Existing frame %1 is incomplete", _first_nonexistant_frame);
- ok = false;
- } else {
- MD5Digester digester;
- digester.add (data.data().get(), data.size());
- LOG_GENERAL ("Hash %1 vs %2", digester.get(), info.hash);
- if (digester.get() != info.hash) {
- LOG_GENERAL ("Existing frame %1 failed hash check", _first_nonexistant_frame);
- ok = false;
- }
- }
-
- if (!ok) {
- --_first_nonexistant_frame;
- }
+ while (!existing_picture_frame_ok(asset_file, info_file) && _first_nonexistant_frame > 0) {
+ --_first_nonexistant_frame;
}
- if (!_film->three_d() && ok) {
+ if (!_film->three_d() && _first_nonexistant_frame > 0) {
/* If we are doing 3D we might have found a good L frame with no R, so only
do this if we're in 2D and we've just found a good B(oth) frame.
*/
_subtitle_asset->add (i);
}
}
+
+bool
+ReelWriter::existing_picture_frame_ok (FILE* asset_file, FILE* info_file) const
+{
+ LOG_GENERAL ("Checking existing picture frame %1", _first_nonexistant_frame);
+
+ /* Read the data from the info file; for 3D we just check the left
+ frames until we find a good one.
+ */
+ dcp::FrameInfo const info = read_frame_info (info_file, _first_nonexistant_frame, _film->three_d () ? EYES_LEFT : EYES_BOTH);
+
+ bool ok = true;
+
+ /* Read the data from the asset and hash it */
+ dcpomatic_fseek (asset_file, info.offset, SEEK_SET);
+ Data data (info.size);
+ size_t const read = fread (data.data().get(), 1, data.size(), asset_file);
+ LOG_GENERAL ("Read %1 bytes of asset data; wanted %2", read, info.size);
+ if (read != static_cast<size_t> (data.size ())) {
+ LOG_GENERAL ("Existing frame %1 is incomplete", _first_nonexistant_frame);
+ ok = false;
+ } else {
+ MD5Digester digester;
+ digester.add (data.data().get(), data.size());
+ LOG_GENERAL ("Hash %1 vs %2", digester.get(), info.hash);
+ if (digester.get() != info.hash) {
+ LOG_GENERAL ("Existing frame %1 failed hash check", _first_nonexistant_frame);
+ ok = false;
+ }
+ }
+
+ return ok;
+}