FFmpeg

Commit Graph

Author	SHA1	Message	Date
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	9362f1a982	h264_redundant_pps: Fix looping over an access unit's units When looping over an access unit's units in positive direction and deleting some of them, one needs to make sure that a unit that is at the position of a unit that just got deleted gets checked, too. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>	6 years ago
Andreas Rheinhardt	d78553cc4c	h264_redundant_pps: Avoid allocations and copies of packet structures This commit changes h264_redundant_pps 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
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
Andreas Rheinhardt	40b74abfca	h264_redundant_pps: Fix memleak in case of errors Now the fragment is uninitialized and the input packet freed in case of errors. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com> Signed-off-by: Mark Thompson <sw@jkqxz.net>	6 years ago
Andreas Rheinhardt	6dafcb6fdb	h264_redundant_pps: Fix logging context The first element of H264RedundantPPSContext is not a pointer to an AVClass as required. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	6 years ago
James Almer	0e27e27670	h264_redundant_pps_bsf: implement a AVBSFContext.flush() callback Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
James Almer	2954e51393	avcodec/h264_redundant_pps_bsf: implement a AVBSFContext.flush() callback Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
Mark Thompson	2651352988	cbs: Allocate the context inside the init function ... instead of making callers allocate it themselves. This is more consistent with other APIs in libav.	7 years ago
Mark Thompson	8b26306294	lavc: Add h264_redundant_pps bitstream filter This applies a specific fixup to some Blu-ray streams which contain redundant PPSs modifying irrelevant parameters of the stream which confuse other transformations which require correct extradata. A new single global PPS is created, and all of the redundant PPSs within the stream are removed. (cherry picked from commit `e6874bc3af`)	7 years ago
Mark Thompson	e6874bc3af	lavc: Add h264_redundant_pps bitstream filter This applies a specific fixup to some Bluray streams which contain redundant PPSs modifying irrelevant parameters of the stream which confuse other transformations which require correct extradata. A new single global PPS is created, and all of the redundant PPSs within the stream are removed.	7 years ago

8 Commits (a124f4ebff5d7784edd25c399275f241f8026338)