/// <summary>
/// Gets the frame of a video media.
/// </summary>
/// <since_tizen> 3 </since_tizen>
/// <param name="timeStamp">The timestamp in milliseconds.</param>
/// <param name="accurate">true to get an accurate frame for the given timestamp,
/// otherwise false to get the nearest i-frame of the video rapidly.</param>
/// <returns>The raw frame data in RGB888 if a frame at specified time exists, otherwise null.</returns>
/// <exception cref="InvalidOperationException">An internal error occurs.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="MetadataExtractor"/> has been already disposed of.</exception>
public byte[] GetFrameAt(uint timeStamp, bool accurate)
{
IntPtr data = IntPtr.Zero;
try
{
int size = 0;
var ret = Interop.MetadataExtractor.GetFrameAtTime(Handle, timeStamp, accurate, out data, out size);
MetadataExtractorRetValidator.ThrowIfError(ret, "Failed to get value");
if (size == 0)
{
return(null);
}
var buf = new byte[size];
Marshal.Copy(data, buf, 0, size);
return(buf);
}
finally
{
Interop.Libc.Free(data);
}
}
/// <summary>
/// Gets the artwork image in the source.
/// </summary>
/// <since_tizen> 3 </since_tizen>
/// <returns>The <see cref="Artwork"/> if it exists, otherwise null.</returns>
/// <exception cref="InvalidOperationException">An internal process error occurs.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="MetadataExtractor"/> has been already disposed of.</exception>
public Artwork GetArtwork()
{
IntPtr data = IntPtr.Zero;
IntPtr mimeType = IntPtr.Zero;
try
{
int size = 0;
var ret = Interop.MetadataExtractor.GetArtwork(Handle, out data, out size, out mimeType);
MetadataExtractorRetValidator.ThrowIfError(ret, "Failed to get value");
if (size > 0)
{
var buf = new byte[size];
Marshal.Copy(data, buf, 0, size);
return(new Artwork(buf, Marshal.PtrToStringAnsi(mimeType)));
}
return(null);
}
finally
{
Interop.Libc.Free(data);
Interop.Libc.Free(mimeType);
}
}
internal static string GetMetadata(this MetadataExtractor extractor, MetadataExtractorAttr attr)
{
Debug.Assert(extractor != null);
IntPtr valuePtr = IntPtr.Zero;
try
{
var ret = Native.GetMetadata(extractor.Handle, attr, out valuePtr);
MetadataExtractorRetValidator.ThrowIfError(ret, "Failed to get value for " + attr);
return(Marshal.PtrToStringAnsi(valuePtr));
}
finally
{
Libc.Free(valuePtr);
}
}
private void Create(Func <MetadataExtractorError> initFunc)
{
MetadataExtractorRetValidator.ThrowIfError(
Interop.MetadataExtractor.Create(out _handle), "Failed to create metadata");
try
{
MetadataExtractorRetValidator.ThrowIfError(initFunc(), "Failed to init");
_metadata = new Lazy <Metadata>(() => new Metadata(this));
}
catch
{
Release();
throw;
}
}
/// <summary>
/// Gets the sync lyrics of the source.
/// </summary>
/// <since_tizen> 3 </since_tizen>
/// <param name="index">The index of lyrics to retrieve.</param>
/// <returns>The <see cref="SyncLyrics"/> object if <paramref name="index"/> is valid, otherwise null.</returns>
/// <exception cref="InvalidOperationException">An internal process error occurs.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="MetadataExtractor"/> has been already disposed of.</exception>
public SyncLyrics GetSyncLyrics(int index)
{
IntPtr lyrics = IntPtr.Zero;
try
{
uint timestamp = 0;
var ret = Interop.MetadataExtractor.GetSynclyrics(Handle, index, out timestamp, out lyrics);
MetadataExtractorRetValidator.ThrowIfError(ret, "Failed to get sync lyrics");
if (lyrics == IntPtr.Zero)
{
return(null);
}
return(new SyncLyrics(Marshal.PtrToStringAnsi(lyrics), timestamp));
}
finally
{
Interop.Libc.Free(lyrics);
}
}
