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FFmpeg/fftools

History

Andreas Rheinhardt 223a2c2a60 fftools/ffmpeg: Improve streamcopy ... do_streamcopy() has a packet that gets zero-initialized first, then gets initialized via av_init_packet() after which some of its fields are oerwritten again with the actually desired values (unless it's EOF): The side data is copied into the packet with av_copy_packet_side_data() and if the source packet is refcounted, the packet will get a new reference to the source packet's data. Furthermore, the flags are copied and the timestamp related fields are overwritten with new values. This commit replaces this by using av_packet_ref() to both initialize the packet as well as populate its fields with the right values (unless it's EOF again in which case the packet will still be initialized). The differences to the current approach are as follows: a) There is no call to a deprecated function (av_copy_packet_side_data()) any more. b) Several fields that weren't copied before are now copied from the source packet to the new packet (e.g. pos). Some of them (the timestamp related fields) may be immediately overwritten again and some don't seem to be used at all (e.g. pos), but in return using av_packet_ref() allows to forgo the initializations. c) There was no check for whether copying side data fails or not. This has been changed: Now the program is exited in this case. Using av_packet_ref() does not lead to unnecessary copying of data, because the source packets are already always refcounted (they originate from av_read_frame()). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>		5 years ago
..
Makefile	Merge commit '7e5bde93a1e7641e1622814dafac0be3f413d79b'	6 years ago
cmdutils.c	cmdutils: trailing options may be ignored	5 years ago
cmdutils.h	fftools: Use right function signature and pointers	5 years ago
ffmpeg.c	fftools/ffmpeg: Improve streamcopy	5 years ago
ffmpeg.h	ffmpeg_hw: Mark some strings as const	6 years ago
ffmpeg_cuvid.c	Merge commit 'c95169f0ec68bdeeabc5fde8aa4076f406242524'	7 years ago
ffmpeg_filter.c	ffmpeg_filter: initialize sub2video.end_pts together with last_pts	6 years ago
ffmpeg_hw.c	ffmpeg_hw: Treat empty device string as no device setting	6 years ago
ffmpeg_opt.c	ffmpeg_opt: remove errant space	5 years ago
ffmpeg_qsv.c	fftools/qsv: add extra_hw_frames support	6 years ago
ffmpeg_videotoolbox.c	avcodec/videotoolbox: add support for full range pixel formats	5 years ago
ffplay.c	ffplay: properly detect all window size changes	5 years ago
ffprobe.c	fftools: Use right function signature and pointers	5 years ago