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3b4f3a0b3f
This patch introduces the AVTP Compressed Video Format (CVF) payloader specified in IEEE 1722-2016 section 8. Currently, this payload only supports H.264 encapsulation described in section 8.5. Is also worth noting that only single NAL units are encapsulated: no aggregation or fragmentation is performed by the payloader. An interesting characteristic of CVF H.264 spec is that it defines an H264_TIMESTAMP, in addition to the AVTP timestamp. The later is translated to the GST_BUFFER_DTS while the former is translated to the GST_BUFFER_PTS. From AVTP CVF H.264 spec, it is clear that the AVTP timestamp is related to the decoding order, while the H264_TIMESTAMP is an ancillary information to the H.264 decoder. Upon receiving a buffer containing a group of NAL units, the avtpcvfpay element will extract each NAL unit and payload them into individual AVTP packets. The last AVTP packet generated for a group of NAL units will have the M bit set, so the depayloader is able to properly regroup them. The exact format of the buffer of NAL units is described on the 'codec_data' capability, which is parsed by the avtpcvfpay, in the same way done in rtph264pay. This patch reuses the infra provided by gstavtpbasepayload.c. |
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| .. | ||
| gstavtp.c | ||
| gstavtpaafdepay.c | ||
| gstavtpaafdepay.h | ||
| gstavtpaafpay.c | ||
| gstavtpaafpay.h | ||
| gstavtpbasedepayload.c | ||
| gstavtpbasedepayload.h | ||
| gstavtpbasepayload.c | ||
| gstavtpbasepayload.h | ||
| gstavtpcvfpay.c | ||
| gstavtpcvfpay.h | ||
| gstavtpsink.c | ||
| gstavtpsink.h | ||
| gstavtpsrc.c | ||
| gstavtpsrc.h | ||
| Makefile.am | ||
| meson.build | ||