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Commit Graph

4 Commits

Author SHA1 Message Date
Jacob Trimble
ad2ae21010 avutil/encryption_info: Fix documentation problem.
Signed-off-by: Jacob Trimble <modmaker@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-06-27 13:43:38 +02:00
Jacob Trimble
b86c5757a2 libavutil/encryption_info: Allow multiple init info.
It is possible for there to be multiple encryption init info structure.
For example, to support multiple key systems or in key rotation.  This
changes the AVEncryptionInitInfo struct to be a linked list so there
can be multiple structs without breaking ABI.

Signed-off-by: Jacob Trimble <modmaker@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-06-23 01:06:29 +02:00
Jacob Trimble
f7221d8e67 avformat/mov: Increase support for common encryption.
- Parse schm atom to get different encryption schemes.
- Allow senc atom to appear in track fragments.
- Allow 16-byte IVs.
- Allow constant IVs (specified in tenc).
- Allow only tenc to specify encryption (i.e. no senc/saiz/saio).
- Use sample descriptor to detect clear fragments.

This doesn't support:
- Different sample descriptor holding different encryption info.
  - Only first sample descriptor can be encrypted.
- Encrypted sample groups (i.e. seig).
- Non-'cenc' encryption scheme when using -decryption_key.

Signed-off-by: Jacob Trimble <modmaker@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-04-19 03:15:32 +02:00
Jacob Trimble
db2a7c947e avcodec/avcodec.h: Add encryption info side data.
This new side-data will contain info on how a packet is encrypted.
This allows the app to handle packet decryption.

Signed-off-by: Jacob Trimble <modmaker@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-03-24 03:11:08 +01:00