FFmpeg

Commit Graph

Author	SHA1	Message	Date
Andreas Rheinhardt	6df9020f45	cbs_mpeg2: Improve performance of writing slices Instead of using a combination of bitreader and -writer for copying data, one can byte-align the (obsolete and removed) bitreader to improve performance. One can even use memcpy in the normal case. This improved the time needed for writing the slicedata from 33618 to 2370 decicycles when tested on a video originating from a DVD (4194394 runs). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com> Signed-off-by: Mark Thompson <sw@jkqxz.net>	6 years ago
Mark Thompson	300ef25314	cbs: Add support for array subscripts in trace output This makes the trace output for arrays significantly nicer.	7 years ago
James Almer	65d36473c9	avcodec/cbs_mpeg2: create a reference to the existing buffer when decomposing slice units Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>	7 years ago
James Almer	05c0f620bf	avcodec/cbs_mpeg2: use existing buffer reference when splitting fragments Reviewed-by: Mark Thompson <sw@jkqxz.net> Signed-off-by: James Almer <jamrial@gmail.com>	7 years ago
James Almer	0161d91db0	avcodec/cbs_mpeg2: use memcpy when assembling fragments before: 419022 decicycles in assemble_fragment, 2047 runs, 1 skips after: 104621 decicycles in assemble_fragment, 2045 runs, 3 skips Benched with a 2 minutes long 720x480 DVD mpeg2 sample. Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: James Almer <jamrial@gmail.com>	7 years ago
James Almer	df3a2ff767	avcodec/cbs: use a reference to the assembled CodedBitstreamFragment buffer when writing packets This saves one malloc + memcpy per packet The CodedBitstreamFragment buffer is padded to follow the requirements of AVPacket. Reviewed-by: jkqxz Signed-off-by: James Almer <jamrial@gmail.com>	7 years ago
Mark Thompson	ce5870a3a8	cbs: Refcount all the things! This makes it easier for users of the CBS API to get alloc/free right - all subelements use the buffer API so that it's clear how to free them. It also allows eliding some redundant copies: the packet -> fragment copy disappears after this change if the input packet is refcounted, and more codec-specific cases are now possible (but not included in this patch).	7 years ago
Mark Thompson	1d12a545ce	cbs: Add an explicit type for coded bitstream unit types Also fix conversion specifiers used for the unit type.	7 years ago
Carl Eugen Hoyos	9b79c65ec0	lavu/lavc/lavf/lavfi: Do not use type modifier %zu on Windows MSVCRT.	7 years ago
Mark Thompson	5a6707e49b	cbs_mpeg2: Fix marker_bit type	7 years ago
Mark Thompson	7bf3f38046	cbs: Add padding to slice data allocations These may be read by the bitstream reader, so they should include the necessary padding for overreads.	7 years ago
Mark Thompson	79d666aa57	cbs_mpeg2: Fix format specifier	7 years ago
Mark Thompson	5b2c71bb94	cbs_mpeg2: Fix type for marker_bit reading	7 years ago
Mark Thompson	686e388bbb	lavc: Add coded bitstream read/write support for MPEG-2 (cherry picked from commit `2bc9ba8d3c`) (cherry picked from commit `a41b69b5eb`)	7 years ago
Mark Thompson	e7f64191b2	cbs: Add buffer padding when splitting fragments Remove any trailing zeroes from H.26[45] NAL units at the same time.	7 years ago
Mark Thompson	44cde38c8a	cbs: Always check for bitstream end before reading	7 years ago
Mark Thompson	2bc9ba8d3c	lavc: Add coded bitstream read/write support for MPEG-2 Also enable MPEG-2 support in the trace_headers filter.	7 years ago

19 Commits (51978aefe8074cc3e020994f6b329387b2149cb8)