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Update path handling against the latest Frei0r specification changes.
Signed-off-by: rogerdpack <rogerpack2005@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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If the first argument can be read as a video size, set that output size
in the scale. This allows to specify in a filtergraph scale=qcif or
scale=320x240.
This is not completely safe, for example in case of a typo in the video
size string the first argument will be read as the input width
expression, giving rise to a confusing comment.
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Also update documentation accordingly.
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Allow to specify a filename where to put the filtergraph description.
This is useful to override limitations or glitches of particular shell
environments, and allows a level of indirection for specifying
filtergraphs.
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Add support for named options, and deprecate old "num:den" ambiguous
syntax.
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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>
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Make the filter accept named options for the first argument, and update
documentation accordingly.
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Allow extensibility.
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Compute duration in microseconds, rather than in timebase units. Decrease
approximation errors.
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Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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Should be more robust/consistent.
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Useful for dealing with constant frame-rate video.
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Fix warning when compiling boxblur.
While this is technically a major API break, practically there will be no
one using that function since the filtering API is mostly private, so
that function alone is not usable.
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Any volunteers to port the pp and spp filters from libmpcodec?
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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The native filter transpose is perfectly equivalent.
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Emulate the mp=rotate passthrough mode.
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It was natively integrated into libavfilter.
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This allows dynamic reconfiguration of the filter.
The callback uses some code that was in the init function. Hence this code
has been moved in its own function.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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This filter is based on the MPlayer decimate filter by Rich Felker.
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It was natively integrated into libavfilter.
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This is a port of the MPlayer smartblur filter (libmpcodecs/vf_smartblur.c)
by Michael Niedermayer.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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An equivalent framestep filter has been natively integrated.
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This filter is inspired upon libmpcodecs/vf_framestep.c, by Daniele
Forghieri.
Only-keyframe output is not supported, since that feature can be achieved
through the more versatile select filter.
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Old syntax has been kept for compatibility reasons.
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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hue was integrated as a native libavfilter filter.
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This is a port of the MPlayer hue filter (libmpcodecs/vf_hue.c) by
Michael Niedermayer.
Signed-off-by: Jérémy Tran <tran.jeremy.av@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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Allow iteration over filter options.
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Based on an idea by Andrey Utkin <andrey.krieger.utkin@gmail.com>.
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Patch readapted by Stefano Sabatini, color values proposed by Tim
Nicholson <nichot20@yahoo.com>.
Address trac ticket #1462.
See thread:
Subject: [FFmpeg-devel] [PATCH] smptebars filter
Date: Wed, 20 Jun 2012 01:54:58 +0000
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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* qatar/master: (35 commits)
h264_idct_10bit: port x86 assembly to cpuflags.
x86inc: clip num_args to 7 on x86-32.
x86inc: sync to latest version from x264.
fft: rename "z" to "zc" to prevent name collision.
wv: return meaningful error codes.
wv: return AVERROR_EOF on EOF, not EIO.
mp3dec: forward errors for av_get_packet().
mp3dec: remove a pointless local variable.
mp3dec: remove commented out cruft.
lavfi: bump minor to mark stabilizing the ABI.
FATE: add tests for yadif.
FATE: add a test for delogo video filter.
FATE: add a test for amix audio filter.
audiogen: allow specifying random seed as a commandline parameter.
vc1dec: Override invalid macroblock quantizer
vc1: avoid reading beyond the last line in vc1_draw_sprites()
vc1dec: check that coded slice positions and interlacing match.
vc1dec: Do not ignore ff_vc1_parse_frame_header_adv return value
configure: Move parts that should not be user-selectable to CONFIG_EXTRA
lavf: remove commented out cruft in avformat_find_stream_info()
...
Conflicts:
Makefile
configure
libavcodec/vc1dec.c
libavcodec/x86/h264_deblock.asm
libavcodec/x86/h264_deblock_10bit.asm
libavcodec/x86/h264dsp_mmx.c
libavfilter/version.h
libavformat/mp3dec.c
libavformat/utils.c
libavformat/wv.c
libavutil/x86/x86inc.asm
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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These filters are designed for storing and transmitting video sequences
with alpha using higher-efficiency codecs such as x264 which don't
natively support an alpha channel. 'alphaextract' takes an input stream
with an alpha channel and returns a video containing just the alpha
component as a grayscale value; 'alphamerge' takes an RGB or YUV stream
and adds an alpha channel recovered from a second grayscale stream.
Signed-off-by: Steven Robertson <steven@strobe.cc>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
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This will be used by filters which require an opaque field to be passed
in input. Should be required only for filters which imply a programmatic
use.
This is possibly a temporary solution, to be removed when we'll have a
clearer and better agreememnt of how/if to pass binary data for
initializing a filter.
See thread:
Subject: [FFmpeg-devel][PATCH] lavfi: add init2 callback
Date: Fri, 6 Jul 2012 01:22:17 +0200
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