* cus/stable:
ffplay: if there is no audio stream, use external clock by default
ffplay: use get_master_sync_type where necessary
ffplay: add get_master_sync_type function
ffplay: only check external clock if current frame serial matches the displayed frame serial
ffplay: add serial field to PacketQueue entry and populate it
ffplay: fix external time sync mode
ffplay: initialize audio and video pts drift
ffplay: fix nosync threshold check in synchronize_audio
ffplay: use framedrop by default when sync is not done to video
Clément Bœsch [Tue, 16 Oct 2012 21:49:03 +0000 (23:49 +0200)]
lavc: add lavfi metadata support.
This commit introduces a new AVPacket side data type:
AV_PKT_DATA_STRINGS_METADATA. Its main goal is to provide a way to
transmit the metadata from the AVFilterBufferRef up to the AVFrame. This
is at the moment "only" useful for lavfi input from libavdevice:
lavd/lavfi only outputs packets, and the metadata from the buffer ref
kept in its context needs to be transmitted from the packet to the frame
by the decoders. The buffer ref can be destroyed at any time (along with
the metadata), and a duplication of the AVPacket needs to duplicate the
metadata as well, so the choice of using the side data to store them was
selected.
Making sure lavd/lavfi raises the metadata is useful to allow tools like
ffprobe to access the filters metadata (it is at the moment the only
way); ffprobe will now automatically show the AVFrame metadata in any
customizable output format for users. API users will also be able to
access the AVFrame->metadata pointer the same way ffprobe does
(av_frame_get_metadata).
All the changes are done in this single commit to avoid some memory
leaks: for instances, the changes in lavfi/avcodec.c are meant to
duplicate the metadata from the buffer ref into the AVFrame. Unless we
have an internal way of freeing the AVFrame->metadata automatically, it
will leak in most of the user apps. To fix this problem, we introduce
AVCodecContext->metadata and link avctx->metadata to the current
frame->metadata and free it at each decode frame call (and in the codec
closing callback for the last one). But doing this also means to update
the way the tiff decoder already handles the AVFrame->metadata (it's the
only one decoder with frame metadata at the moment), by making sure it
is not trying to free a pointer already freed by the lavc internals.
The lavfi/avcodec.c buffer ref code is based on an old Thomas Kühnel
work, the rest of the code belongs to the commit author.
Signed-off-by: Thomas Kühnel <kuehnelth@googlemail.com> Signed-off-by: Clément Bœsch <ubitux@gmail.com>
Marton Balint [Sat, 13 Oct 2012 19:33:32 +0000 (21:33 +0200)]
ffplay: add get_master_sync_type function
The real av_sync_type may be different to VideoState->av_sync_type, because the
required audio or video stream for audio or video clock may not be available.
We will use a function to query the real av_sync_type which is used for
determining the master clock.
Marton Balint [Sun, 14 Oct 2012 15:56:32 +0000 (17:56 +0200)]
ffplay: add serial field to PacketQueue entry and populate it
The purpose of the serial field is to accompany the decoded data during the
decoding process to know if the decoded data belongs to the data stream after
the latest packet queue flush.
Marton Balint [Sat, 6 Oct 2012 21:55:29 +0000 (23:55 +0200)]
ffplay: fix external time sync mode
We now initalize the external clock to 0 and, we use the system clock to
regulate the timings of audio and video in external clock sync mode. We
recover from external clock sync loss, when the delay to external clock is
bigger than AV_NOSYNC_THRESHOLD.
* commit '2d09b36c0379fcda8f984bc8ad8816c8326fd7bd':
doc/platform: Add info on shared builds with MSVC
doc/platform: Move a caveat down to the notes section
ARM: reinstate optimised intmath.h
ffv1: update to ffv1 version 3
* commit 'd15c21e5fa3961f10026da1a3080a3aa3cf4cec9':
avutil: Add a copy of ff_sqrt_tab back into avutil to restore ABI compatibility
avutil: make some tables visible again
avutil: remove inline av_log2 from public API
celp_math: rename ff_log2 to ff_log2_q15
The libav code depends on mp3 startcodes only occuring at the start of
frames. But there is nothing in mp3 that prevents them occuring elsewhere
by chance. Thus the code would fail randomly, the new code searches for 3
consecutive valid frames. If this turns out to be still insufficient the
number can be raised further, or additional checks added.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Martin Storsjö [Sat, 20 Oct 2012 10:32:01 +0000 (13:32 +0300)]
avutil: Add a copy of ff_sqrt_tab back into avutil to restore ABI compatibility
Earlier versions of for instance of libavcodec expect this symbol to be
present in libavutil. This commit can be reverted after the next major
bump.
New shared builds of avcodec will link to the internal copy of the
table within that library, so those builds won't rely on this table
being present in avutil any longer either.
Mans Rullgard [Thu, 18 Oct 2012 17:15:38 +0000 (18:15 +0100)]
avutil: remove inline av_log2 from public API
This removes inline av_log2 and av_log2_16bit from the public API,
instead exporting them as regular functions. In-tree code still
gets the inline and otherwise optimised variants.
* commit 'c9ef43215c7d68c2cdcdbe02287aa114f27a32ed':
fate-vc1: add dependencies
ARM: fix overreads in neon h264 chroma mc
rtsp: Make sure the ret variable is initialized in ff_rtsp_fetch_packet
gitignore: ignore files created by msvc
fate: Add proper dependencies for the tests in video.mak
configure: Disable Snow decoder and encoder by default
lzo: Drop obsolete fast_memcpy reference
build: Drop OBJS declaration for non-existing PCM_DVD encoder
mpeg4videodec: Disable frame multithreading for GMC, its not implemented at all
Stefano Sabatini [Tue, 16 Oct 2012 16:15:58 +0000 (18:15 +0200)]
lavu/parseutils: rework rational reduction logic in av_parse_ratio()
Avoid to divide num and den by gcd in case of a parsed expression, since
that is already done in av_d2q(), and force reduction in case of "a:b"
form, allowing to honour the max parameter.
The latter change is consistent with the a/b case, and with the
documentation.
Mans Rullgard [Fri, 19 Oct 2012 12:39:11 +0000 (13:39 +0100)]
ARM: fix overreads in neon h264 chroma mc
The loops were reading ahead one line, which could end up outside the
buffer for reference blocks at the edge of the picture. Removing
this readahead has no measurable performance impact.
Hendrik Leppkes [Fri, 19 Oct 2012 19:35:40 +0000 (21:35 +0200)]
swresample: include ff_log2_tab for shared builds
This is done in accordance with all other libraries, which no longer access ff_log2_tab from avutil directly for shared builds, and instead obtain their own copy.
This change is required for MSVC DLL builds, as well as avoids accessing a private symbol from another library.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Hendrik Leppkes [Fri, 19 Oct 2012 20:07:10 +0000 (22:07 +0200)]
gitignore: ignore files created by msvc
exp files are created in every build and contain export information
of the libraries. Both pdb and ilk are created during debug builds,
and contain linking and debug information used by MSVC.
The image sizes needed for this overflow to happen are currently not
supported in lavc, thus this should have no effect execpt making the
code more robust in light of future changes.
Fixes CID732245 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
projects / ffmpeg / log