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Added Json methods to readers and readerBase classes.

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This commit is contained in:
Jonathan Thomas
2013-12-07 16:52:09 -06:00
parent 109e88dddc
commit e3d41808b9
10 changed files with 312 additions and 10 deletions
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99
src/WriterBase.cpp
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@@ -128,9 +128,16 @@ void WriterBase::DisplayInfo() {
cout << "----------------------------" << endl;
}
// Generate JSON string of writer info
// Generate JSON string of this object
string WriterBase::Json() {
// Return formatted string
return JsonValue().toStyledString();
}
// Generate Json::JsonValue for this object
Json::Value WriterBase::JsonValue() {
// Create root json object
Json::Value root;
root["has_video"] = info.has_video;
@@ -171,6 +178,92 @@ string WriterBase::Json() {
root["audio_timebase"]["num"] = info.audio_timebase.num;
root["audio_timebase"]["den"] = info.audio_timebase.den;
// return formatted json string
return root.toStyledString();
// return JsonValue
return root;
}
// Load JSON string into this object
void WriterBase::Json(string value) throw(InvalidJSON) {
// Parse JSON string into JSON objects
Json::Value root;
Json::Reader reader;
bool success = reader.parse( value, root );
if (!success)
// Raise exception
throw InvalidJSON("JSON could not be parsed (or is invalid)", "");
try
{
// Set all values that match
Json(root);
}
catch (exception e)
{
// Error parsing JSON (or missing keys)
throw InvalidJSON("JSON is invalid (missing keys or invalid data types)", "");
}
}
// Load Json::JsonValue into this object
void WriterBase::Json(Json::Value root) {
// Set data from Json (if key is found)
if (root["has_video"] != Json::nullValue)
info.has_video = root["has_video"].asBool();
if (root["has_audio"] != Json::nullValue)
info.has_audio = root["has_audio"].asBool();
if (root["duration"] != Json::nullValue)
info.duration = root["duration"].asDouble();
if (root["file_size"] != Json::nullValue)
info.file_size = (long long) root["file_size"].asUInt();
if (root["height"] != Json::nullValue)
info.height = root["height"].asInt();
if (root["width"] != Json::nullValue)
info.width = root["width"].asInt();
if (root["pixel_format"] != Json::nullValue)
info.pixel_format = root["pixel_format"].asInt();
if (root["fps"] != Json::nullValue) {
info.fps.num = root["fps"]["num"].asInt();
info.fps.den = root["fps"]["den"].asInt();
}
if (root["video_bit_rate"] != Json::nullValue)
info.video_bit_rate = root["video_bit_rate"].asInt();
if (root["pixel_ratio"] != Json::nullValue) {
info.pixel_ratio.num = root["pixel_ratio"]["num"].asInt();
info.pixel_ratio.den = root["pixel_ratio"]["den"].asInt();
}
if (root["display_ratio"] != Json::nullValue) {
info.display_ratio.num = root["display_ratio"]["num"].asInt();
info.display_ratio.den = root["display_ratio"]["den"].asInt();
}
if (root["vcodec"] != Json::nullValue)
info.vcodec = root["vcodec"].asString();
if (root["video_length"] != Json::nullValue)
info.video_length = (long int) root["video_length"].asUInt();
if (root["video_stream_index"] != Json::nullValue)
info.video_stream_index = root["video_stream_index"].asInt();
if (root["video_timebase"] != Json::nullValue) {
info.video_timebase.num = root["video_timebase"]["num"].asInt();
info.video_timebase.den = root["video_timebase"]["den"].asInt();
}
if (root["interlaced_frame"] != Json::nullValue)
info.interlaced_frame = root["interlaced_frame"].asBool();
if (root["top_field_first"] != Json::nullValue)
info.top_field_first = root["top_field_first"].asBool();
if (root["acodec"] != Json::nullValue)
info.acodec = root["acodec"].asString();
if (root["audio_bit_rate"] != Json::nullValue)
info.audio_bit_rate = root["audio_bit_rate"].asInt();
if (root["sample_rate"] != Json::nullValue)
info.sample_rate = root["sample_rate"].asInt();
if (root["channels"] != Json::nullValue)
info.channels = root["channels"].asInt();
if (root["audio_stream_index"] != Json::nullValue)
info.audio_stream_index = root["audio_stream_index"].asInt();
if (root["audio_timebase"] != Json::nullValue) {
info.audio_timebase.num = root["audio_timebase"]["num"].asInt();
info.audio_timebase.den = root["audio_timebase"]["den"].asInt();
}
}