FFMPEGMediaPlayer: Decode audio frames.

Re-enable code to decode audio frame.

Throw a runtime exception for unimplemented sp_avcodec_decode_audio3 fallback.

Fix pts calculation to prevent division by zero caused by type truncation.
Fix aPTS calculation to use valid data.

Hide pts & aPTS info while running non-verbose.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
FFMPEGMediaPlayer: Use the Audio codec to decode audio. Also prevent double free of packet memory.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
FFMPEGMediaPlayer: Lookup decoded audio data_size using av_samples_get_buffer_size

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
FFMPEGMediaPlayer: Decode all frames inside video packet.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
FFMPEGMediaPlayer: Workaround dropped video frames while decoding audio.

A temporal solution before we implement video decode and frame cache
in a separate thread.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>
FFMPEGMediaPlayer: Workaround forward seek delay caused by video sync.

Prevent the video sync code to delay a frame more than 1 second.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>