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* Fix various typos in log messagesNicolas F2017-12-031-2/+2
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* demux_mkv: rewrite packet reading to avoid 1 memcpy()wm42017-11-051-47/+16
| | | | | | | | | | | | | | | | | | | | | | | This directly reads individual mkv sub-packets (block laces) into a dedicated AVBufferRefs, which can be directly used for creating packets without a additional copy of the packet data. This also means we switch parsing of block header fields and lacing metadata to read directly from the stream, instead of a memory buffer. This could have been much easier if libavcodec didn't require padding the packet data with zero bytes. We could just have each packet reference a slice of the block data. But as it is, the only way to get padding without a copy is to read the laces into individually allocated (and padded) memory block, which required a larger rewrite. This probably makes recovering from broken mkv files slightly worse if the transport is unseekable. We just read, and then check if we've overread. But I think that shouldn't be a real concern. No actual measureable performance change. Potential for some regressions, as this is quite intrusive, and touches weird obscure shit like mkv lacing. Still keeping it because I like how it removes some redundant EBML parsing functions.
* ebml, matroska.h: change license to LGPLwm42017-04-211-7/+7
| | | | | These are covered by the analysis in commit e7e6aa3d64d8773 too (although there are no potential problems).
* demux_mkv: ebml: turn an int shift into int64wm42017-01-091-1/+1
| | | | | | | | | This was probably the intention all along. But I honestly have no idea what this code even does. Due to what ebml_read_vlen_int() is used for, this is unlikely to have mattered anyway as it rarely/never reads huge values. Which is probably why this has worked for over a decade.
* mpv_talloc.h: rename from talloc.hDmitrij D. Czarkoff2016-01-111-1/+1
| | | | This change helps avoiding conflict with talloc.h from libtalloc.
* ebml: warn if an EBML has unknown lengthwm42015-09-031-0/+4
| | | | | | | | | | | | | While unknown lengths are supported in some important cases like segments and clusters, they are not for small and complex metadata elements like the track list. Such elements are simply rejected. This case was caught by the size sanity check below, but the message is misleading and wrong. (There are likely no files in the wild which require support for this. The sample file I've seen was muxed by libavformat, but in a case where it aborted when writing the header. Clearly a broken file.)
* demux_mkv: allow integer and float elements with length 0wm42015-06-241-7/+11
| | | | | | | | Integer and float elements are encoded as a sequence of bytes prefixed by a variable-length encoded length specifier. If the length is 0, then there is no data. Whether this is valid or not is not really clear, but some sample files which do this have surfaced. It's not particularly hard to handle this, so just do it.
* demux_mkv: don't use byte stringswm42015-06-241-9/+20
| | | | | | Use char* for strings instead of bstr (data ptr + length pair). Matroska actually (probably) allows "padding" strings with \0 bytes, so using normal C strings instead of byte strings is more appropriate.
* Update license headersMarcin Kurczewski2015-04-131-5/+4
| | | | Signed-off-by: wm4 <wm4@nowhere>
* demux_mkv: never warn when trying to resync on EOFwm42015-03-091-2/+4
| | | | | | If this happens, the file is actually broken, but the assumption is simply that the file was truncated, and printing a warning would be strange.
* demux_mkv: fix EBML parsing checkswm42015-01-121-16/+15
| | | | | | | | Reading IDs must be checked too. This was basically forgotten in commit f3a978cd. Also set the *length parameter for ebml_parse_length() in some error cases, which _really_ should happen. Fixes #1461.
* demux_mkv: better check for some EBML parsingwm42015-01-121-15/+19
| | | | | | | | | | Apparently, originally this code was meant to be able to read past the buffer somewhat, which is why the buffer allocation was padded by 8 byte. This is unclean and confuses valgrind. This probably could have crashed with certain invalid files too. Also revert the change added with 10a2f69; it should be not needed anymore.
* emux_mkv: fix possible uninitialized reads with short fileswm42014-12-101-1/+3
| | | | | | | | | | These actually are harmless. Even if the data the reader is working on is essentially random, it's treated like untrusted input data, so there should be no harm. But it upsets tools like valgrind. Probably fixes #1329.
* demux_mkv: fix undefined shiftswm42014-11-081-4/+4
| | | | | | | Found by clang sanitizer. Casting unsigned integers to signed integers with same size has implementation defined behavior (it's even allowed to crash), but it seems reasonable to expect that reasonable implementations do a complement of 2 "conversion".
* Remove mpbswap.hwm42014-09-251-1/+0
| | | | | | This was once central, but now it's almost unused. Only vf_divtc still uses it for extremely weird and incomprehensible reasons. The use in stream.c is trivial. Replace these, and remove mpbswap.h.
* ebml: warn if there are too many subelementswm42014-09-041-3/+7
| | | | Seems like a good idea.
* Move compat/ and bstr/ directory contents somewhere elsewm42014-08-291-1/+1
| | | | | | | | | bstr.c doesn't really deserve its own directory, and compat had just a few files, most of which may as well be in osdep. There isn't really any justification for these extra directories, so get rid of them. The compat/libav.h was empty - just delete it. We changed our approach to API compatibility, and will likely not need it anymore.
* demux: minor cleanupswm42014-07-011-4/+0
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* demux_mkv: cosmeticswm42014-06-291-12/+6
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* demux_mkv: add some overflow checks etc.wm42014-06-291-1/+9
| | | | | | | | | | | Some of these might be security relevant. The RealAudio code was especially bad. I'm not sure if all RealAudio stuff still plays correctly; I didn't have that many samples for testing. Some checks might be unnecessary or overcomplicated compared to the (obfuscated) nature of the code. CC: @mpv-player/stable
* ebml: remove length parameters from read functionswm42014-01-141-19/+8
| | | | | | | Many ebml_read_* functions have a length int pointer parameter, which returns the number of bytes skipped. Nothing actually needed this (anymore), and code using it was rather hard to understand, so get rid of them.
* ebml: remove unused functionswm42014-01-141-86/+0
| | | | These were mostly replaced by ebml_read_element().
* demux_mkv: improve robustness by explicitly checking for level 1 elementswm42014-01-141-37/+36
| | | | | | | | | | | | | | | | | | | | Matroska makes it pretty hard to resync correctly on broken files: random data returns "valid" EBML IDs with a high probability, and when trying to skip them it's likely that you skip a random amount of data (instead of considering the element length invalid). Improve upon this by skipping known level 1 elements only. Consider everything else invalid and call the resync code. This might result in annoying behavior when Matroska adds new level 1 elements, although it won't be particularly harmful. Matroska doesn't really allow us to do better (even mkvtoolnix explicitly checks for known level 1 elements). Since we now don't always want to combine EBML element skipping and resyncing, remove ebml_read_skip_or_resync_cluster(), and make ebml_read_skip() more tolerant against skipping broken elements. Also, don't resync when reading sub-elements, and instead do resyncing when reading them results in an error.
* demux_mkv: avoid skipping too much data in corrupted fileswm42014-01-141-5/+6
| | | | | | | | | | Until now, corrupted files were detected if the size of an element (that should be skipped) was larger than the remaining file. This still could skip larger regions of the file itself if the broken size happened to be within the file. Change it so that it's never allowed to skip outside the parent's element.
* msg: convert defines to enumwm42013-12-211-1/+1
| | | | Also get rid of MSGL_HINT and the many MSGL_DBG* levels.
* demux: mp_msg conversionswm42013-12-211-39/+33
| | | | | | | The TV code pretends to be part of stream/, but it's actually demuxer code too. The audio_in code is shared between the TV code and stream_radio.c, so stream_radio.c needs a small hack until stream.c is converted.
* Split mpvcore/ into common/, misc/, bstr/wm42013-12-171-1/+1
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* core: move contents to mpvcore (2/2)Stefano Pigozzi2013-08-061-1/+1
| | | | Followup commit. Fixes all the files references.
* Fix some -Wshadow warningswm42013-07-231-4/+3
| | | | | | In general, this warning can hint to actual bugs. We don't enable it yet, because it would conflict with some unmerged code, and we should check with clang too (this commit was done by testing with gcc).
* stream: fix some aspects of EOF handlingwm42013-06-161-3/+2
| | | | | | | | | | | | | The stream EOF flag should only be set when trying to read past the end of the file (relatively similar to unix files). Always clear the EOF flag on seeking. Trying to set it "properly" (depending whether data is available at seek destination or not) might be an ok idea, but would require attention to too many special cases. I suspect before this commit (and in MPlayer etc. too), the EOF flag wasn't handled consistently when the stream position was at the end of the file. Fix one special case in ebml.c and stream_skip(): this function couldn't distinguish between at-EOF and past-EOF either.
* demux_mkv: use a bounded buffer for block datawm42013-04-201-10/+15
| | | | Should help avoiding out-of-bounds reads.
* demux_mkv: improve robustness against broken fileswm42013-03-281-1/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes test7.mkv from the Matroska test file collection, as well as some real broken files I've found in the wild. (Unfortunately, true recovery requires resetting the decoders and playback state with a manual seek, but it's still better than just exiting.) If there are broken EBML elements, try harder to skip them correctly. Do this by searching for the next cluster element. The cluster element intentionally has a long ID, so it's a suitable element for resynchronizing (mkvmerge does something similar). We know that data is corrupt if the ID or length fields of an element are malformed. Additionally, if skipping an unknown element goes past the end of the file, we assume it's corrupt and undo the seek. Do this because it often happens that corrupt data is interpreted as correct EBML elements. Since these elements will have a ridiculous values in their length fields due to the large value range that is possible (0-2^56-2), they will go past the end of the file. So instead of skipping them (which would result in playback termination), try to find the next cluster instead. (We still skip unknown elements that are within the file, as this is needed for correct operation. Also, we first execute the seek, because we don't really know where the file ends. Doing it this way is better for unseekable streams too, because it will still work in the non-error case.) This is done as special case in the packet reading function only. On the other hand, that's the only part of the file that's read after initialization is done.
* Rename directories, move files (step 2 of 2)wm42012-11-121-2/+2
| | | | | | | | | | | | Finish renaming directories and moving files. Adjust all include statements to make the previous commit compile. The two commits are separate, because git is bad at tracking renames and content changes at the same time. Also take this as an opportunity to remove the separation between "common" and "mplayer" sources in the Makefile. ("common" used to be shared between mplayer and mencoder.)
* Rename directories, move files (step 1 of 2) (does not compile)wm42012-11-121-0/+670
Tis drops the silly lib prefixes, and attempts to organize the tree in a more logical way. Make the top-level directory less cluttered as well. Renames the following directories: libaf -> audio/filter libao2 -> audio/out libvo -> video/out libmpdemux -> demux Split libmpcodecs: vf* -> video/filter vd*, dec_video.* -> video/decode mp_image*, img_format*, ... -> video/ ad*, dec_audio.* -> audio/decode libaf/format.* is moved to audio/ - this is similar to how mp_image.* is located in video/. Move most top-level .c/.h files to core. (talloc.c/.h is left on top- level, because it's external.) Park some of the more annoying files in compat/. Some of these are relicts from the time mplayer used ffmpeg internals. sub/ is not split, because it's too much of a mess (subtitle code is mixed with OSD display and rendering). Maybe the organization of core is not ideal: it mixes playback core (like mplayer.c) and utility helpers (like bstr.c/h). Should the need arise, the playback core will be moved somewhere else, while core contains all helper and common code.
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