[Ffmpeg-devel] STREAM_TYPE_PRIVATE_DATA support in mpegts
Thu May 4 15:05:54 CEST 2006
Please find attached a patch to enable arbitrary data stream support in mpegts
* Added CODEC_TYPE_DATA support; fairly simple - dealt with just as
subtitle packets are - i.e. never buffered, always sent instantly
* Added CODEC_TYPE_DATA support; but it's done in a roundabout fashion.
mpegtsenc.c::mpegts_write_pmt() writes all non-video, non-audio
streams as STREAM_TYPE_PRIVATE_DATA transport PES types.
mpegts.c::pmt_cb() on the other hand silently dropped any
STREAM_TYPE_PRIVATE_DATA streams; it doesn't any more, they are now
treated just like STREAM_TYPE_SUBTITLE_DVB streams. i.e.
new_pes_av_stream() is called to create a corresponding AVStream
instance. However, new_pes_av_stream() would treat
STREAM_TYPE_PRIVATE_DATA streams as if they were some special MPEG
stream. Now, STREAM_TYPE_PRIVATE_DATA sets
codec_type to CODEC_TYPE_DATA and codec_id to CODEC_ID_NONE.
I'm not sure how acceptable it is to set a codec as explicitly CODEC_ID_NONE;
but I'm sure you'll all tell me :-)
Dr Andy Parkins, M Eng (hons), AMIEE
andyparkins at gmail.com
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