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Improved ChunkWriter to create chunk folder and write JSON meta data

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This commit is contained in:
Jonathan Thomas
2013-08-27 13:37:00 -05:00
parent 75cda958d3
commit 1e2d93721d
4 changed files with 80 additions and 3 deletions
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58
src/ChunkWriter.cpp
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@@ -17,6 +17,12 @@ ChunkWriter::ChunkWriter(string path, FileReaderBase *reader) throw (InvalidFile
// Copy info struct from the source reader
CopyReaderInfo(local_reader);
// Create folder (if it does not exist)
create_folder(path);
// Write JSON meta data file
write_json_meta_data();
}
// Add a frame to the queue waiting to be encoded.
@@ -128,10 +134,58 @@ void ChunkWriter::Close()
write_audio_count = 0;
}
// check for chunk folder
bool ChunkWriter::does_chunk_folder_exist()
// write json meta data
void ChunkWriter::write_json_meta_data()
{
Json::Value root;
root["has_video"] = local_reader->info.has_video;
root["has_audio"] = local_reader->info.has_audio;
root["duration"] = local_reader->info.duration;
stringstream filesize_stream;
filesize_stream << local_reader->info.file_size;
root["file_size"] = filesize_stream.str();
root["height"] = local_reader->info.height;
root["width"] = local_reader->info.width;
root["pixel_format"] = local_reader->info.pixel_format;
root["fps"] = Json::Value(Json::objectValue);
root["fps"]["num"] = local_reader->info.fps.num;
root["fps"]["den"] = local_reader->info.fps.den;
root["video_bit_rate"] = local_reader->info.video_bit_rate;
root["pixel_ratio"] = Json::Value(Json::objectValue);
root["pixel_ratio"]["num"] = local_reader->info.pixel_ratio.num;
root["pixel_ratio"]["den"] = local_reader->info.pixel_ratio.den;
root["display_ratio"] = Json::Value(Json::objectValue);
root["display_ratio"]["num"] = local_reader->info.display_ratio.num;
root["display_ratio"]["den"] = local_reader->info.display_ratio.den;
root["vcodec"] = local_reader->info.vcodec;
stringstream video_length_stream;
video_length_stream << local_reader->info.video_length;
root["video_length"] = video_length_stream.str();
root["video_stream_index"] = local_reader->info.video_stream_index;
root["video_timebase"] = Json::Value(Json::objectValue);
root["video_timebase"]["num"] = local_reader->info.video_timebase.num;
root["video_timebase"]["den"] = local_reader->info.video_timebase.den;
root["interlaced_frame"] = local_reader->info.interlaced_frame;
root["top_field_first"] = local_reader->info.top_field_first;
root["acodec"] = local_reader->info.acodec;
root["audio_bit_rate"] = local_reader->info.audio_bit_rate;
root["sample_rate"] = local_reader->info.sample_rate;
root["channels"] = local_reader->info.channels;
root["audio_stream_index"] = local_reader->info.audio_stream_index;
root["audio_timebase"] = Json::Value(Json::objectValue);
root["audio_timebase"]["num"] = local_reader->info.audio_timebase.num;
root["audio_timebase"]["den"] = local_reader->info.audio_timebase.den;
cout << root << endl;
}
// check for chunk folder
bool ChunkWriter::create_folder(string path)
{
QDir dir(path.c_str());
if (!dir.exists()) {
dir.mkpath(".");
}
}
// check for valid chunk json