Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Andreas Rheinhardt	43a188847c	av1/h264_metadata: Don't reinitialize data If the relevant elements (the color description elements for AV1 and the VUI elements in general for H.264 (since `1156b507`)) are absent, then their correct values (usually meaning unknown) have already been inferred by the reading process, so that it is unnecessary to initialize them again in the av1/h264_metadata filters even when they were initially absent. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
Andreas Rheinhardt	730e5be3aa	cbs: ff_cbs_delete_unit: Replace return value with assert ff_cbs_delete_unit never fails if the index of the unit to delete is valid, as it is with all current callers of the function. So just assert in ff_cbs_delete_unit that the index is valid and change the return value to void in order to remove the callers' checks for whether ff_cbs_delete_unit failed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
Andreas Rheinhardt	3f81cc8c94	av1_metadata: Error out if fragment is empty If the fragment is empty after parsing (i.e. it contains no OBUs), then the check for the type of the fragment's first OBU is nonsensical; so error out in this case just as h264_metadata and hevc_metadata do. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
Andreas Rheinhardt	36fcdc3fbe	av1/h264_metadata, filter_units: Count down when deleting units When testing whether a particular unit should be kept or discarded, it is best to start at the very last unit of a fragment and count down, because that way a unit that will eventually be deleted won't be memmoved during earlier deletions; and frag/au->nb_units need only be evaluated once in this case and the counter is automatically correct when a unit got deleted. It also works for double loops, i.e. when looping over all SEI messages in all SEI units of an access unit. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
Andreas Rheinhardt	7549f0ac1b	av1_metadata: Avoid allocations and copies of packet structures This commit changes av1_metadata to (a) use ff_bsf_get_packet_ref instead of ff_bsf_get_packet (thereby avoiding one malloc and free per filtered packet) and (b) to use only one packet structure at all, thereby avoiding a call to av_packet_copy_props. (b) has been made possible by the recent changes to ff_cbs_write_packet. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
James Almer	ee16d14b0a	avcodec/av1_metadata: add an option to remove Padding OBUs Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
Andreas Rheinhardt	b8c45bbcbc	libavcodec/cbs: Stop needlessly reallocating the units array Currently, a fragment's unit array is constantly reallocated during splitting of a packet. This commit changes this: One can keep the units array by distinguishing between the number of allocated and the number of valid units in the units array. The more units a packet is split into, the bigger the benefit. So MPEG-2 benefits the most; for a video coming from an NTSC-DVD (usually 32 units per frame) the average cost of cbs_insert_unit (for a single unit) went down from 6717 decicycles to 450 decicycles (based upon 10 runs with 4194304 runs each); if each packet consists of only one unit, it went down from 2425 to 448; for a H.264 video where most packets contain nine units, it went from 4431 to 450. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>	6 years ago
Mark Thompson	6ff4473012	av1_metadata: Fix constraint on setting chroma_sample_position It can't be set for 4:2:2 streams.	6 years ago
James Almer	af2acbd23f	avcodec/av1_metadata: add an option to insert and remove Temporal Delimiter OBUs Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
Mark Thompson	476a77128a	lavc: Add AV1 metadata bitstream filter Can adjust colour and timing information.	6 years ago