Although with several limitations, lavfi can be compiled and used
without the scale filter.
Originally committed as revision 24570 to svn://svn.ffmpeg.org/ffmpeg/trunk
in favor of the newly added corresponding functions
av_parse_video_size() and av_parse_video_rate() defined in
libavcore/parseutils.h.
This change also adds a linking-time dependency of libavcodec and of
libavfilter on libavcore.
Originally committed as revision 24518 to svn://svn.ffmpeg.org/ffmpeg/trunk
This is needed to make the libavfilter framework work with audio
filters.
In particular add a type field to AVFilterLink, change the field types:
enum PixelFormat format -> int format in AVFilterBuffer
enum PixelFormat *formats -> int *formats in AVFilterFormats
enum PixelFormat *format -> int format in AVFilterLink
and change the function signatures:
AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
AVFilterFormats *avfilter_make_format_list(const int *fmts);
int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
int avfilter_add_format(AVFilterFormats **avff, int fmt);
AVFilterFormats *avfilter_all_colorspaces(void); ->
AVFilterFormats *avfilter_all_formats(enum AVMediaType type);
This change breaks libavfilter API/ABI.
Patch by S.N. Hemanth Meenakshisundaram |smeenaks|ucsd|edu|.
Originally committed as revision 24424 to svn://svn.ffmpeg.org/ffmpeg/trunk
Make the buffer source accept a string for specifying the input pixel
format.
Originally committed as revision 24387 to svn://svn.ffmpeg.org/ffmpeg/trunk
definition.
This way it is easier to reference them in other structures, for
example in the pending AVFilterSamplesRef struct.
Patch by S.N. Hemanth Meenakshisundaram smeenaks AT ucsd DOT edu.
Originally committed as revision 24294 to svn://svn.ffmpeg.org/ffmpeg/trunk
These fields are never used, and they do not seem to belong to
AVFilterBuffer anymore, now that it is now a media-independent
structure and these fields are video-related.
Patch by S.N. Hemanth Meenakshisundaram smeenaks ! ucsd ! edu.
Originally committed as revision 24291 to svn://svn.ffmpeg.org/ffmpeg/trunk
The struct is going to be used for audio data as well, so the new name
is less misleading.
Patch by S.N. Hemanth Meenakshisundaram smeenaks AT ucsd DOT edu.
Originally committed as revision 24284 to svn://svn.ffmpeg.org/ffmpeg/trunk
The old names were not av_ prefixed, and they were causing linking
failure on many platforms. The new names are also more descriptive.
Patch by Stefano Sabatini.
Originally committed as revision 24101 to svn://svn.ffmpeg.org/ffmpeg/trunk
of the file, and put under #if CONFIG_PAD_FILTER the code specific to
the pad filter.
Simplify the inclusion of the color source.
Originally committed as revision 24067 to svn://svn.ffmpeg.org/ffmpeg/trunk
byte for the alpha component, as it is never used, clarify the code
and prevent bad usage of it.
Originally committed as revision 23834 to svn://svn.ffmpeg.org/ffmpeg/trunk
warning #188: enumerated type mixed with another type
enum PixelFormat pix_fmts[] = { c->pix_fmt, PIX_FMT_NONE };
^
Originally committed as revision 23640 to svn://svn.ffmpeg.org/ffmpeg/trunk
Keep an old ff_ named function for binary compatibility until the
next major bump.
Originally committed as revision 23254 to svn://svn.ffmpeg.org/ffmpeg/trunk
swscale context.
This makes eventual warnings issued in case of swscale context
creation failure to be shown after the conversion information rather
than before, which is slightly less confusing.
Originally committed as revision 23056 to svn://svn.ffmpeg.org/ffmpeg/trunk
Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
In case of reallocation failure the pointer to the original filter
array was lost. The correct behavior seems to just keep the old array
and count.
Originally committed as revision 22905 to svn://svn.ffmpeg.org/ffmpeg/trunk
Avoid creating and releasing useless extra picture references in the
start_frame and end_frame callbacks.
Originally committed as revision 22596 to svn://svn.ffmpeg.org/ffmpeg/trunk
byte position information, as stored in the pkt.pos, through the
filterchain.
Note that the pos field is added *non* at the end of the
AVFilterPicRef struct, thus breaking ABI compatibility, which is
allowed as the API is still considered non-stable.
Originally committed as revision 22506 to svn://svn.ffmpeg.org/ffmpeg/trunk
choosen between 8 and 32 when the supplied parameter is the string
"random".
This is useful for testing the slice support, but it is not supposed
to be used for other purposes and this interface may change in the
future, thus it is not documented.
The randomization algorithm adopted is the standard Numerical Recipes
LCG.
Originally committed as revision 22505 to svn://svn.ffmpeg.org/ffmpeg/trunk
This function is not referenced outside this file and has no
prototype. Feel free to flame if this is wrong.
Originally committed as revision 22314 to svn://svn.ffmpeg.org/ffmpeg/trunk
Also link avfiltergraph.o and graphparser.o against libavfilter, as it
uses them.
Originally committed as revision 22063 to svn://svn.ffmpeg.org/ffmpeg/trunk
avcodec_get_chroma_sub_sample(), directly access
av_pix_fmt_descriptors instead.
Remove some of the dependancies of lavfi on lavc.
Originally committed as revision 21575 to svn://svn.ffmpeg.org/ffmpeg/trunk
size of the output link of the destination filter, rather than of the
size of the input link.
In particular this fixes a crash in the rotate filter.
Originally committed as revision 21238 to svn://svn.ffmpeg.org/ffmpeg/trunk
auto-inserted scale filter, rather than the filter name, as this
provides more information.
Originally committed as revision 21123 to svn://svn.ffmpeg.org/ffmpeg/trunk
AVFilter.query_formats doxy.
The doxy expresses what a function does, not what it should do.
Originally committed as revision 21075 to svn://svn.ffmpeg.org/ffmpeg/trunk
*avff, so that an AVFilterFormats struct is created and returned by
the function if *avff is NULL.
Make the function use more convenient.
Originally committed as revision 21035 to svn://svn.ffmpeg.org/ffmpeg/trunk
formats only the non-HW-accelerated formats, for which there is no
sense in filtering.
Originally committed as revision 21009 to svn://svn.ffmpeg.org/ffmpeg/trunk
Add ';' and '\n' to the terminating characters for the name of a
filter, and ';' to the terminating characters for its args.
Originally committed as revision 20800 to svn://svn.ffmpeg.org/ffmpeg/trunk
of the type 0xRRGBBAA parsed by av_parse_color(), using a simple int
was resulting in unexpected results as the most significant bit was
used for the sign.
Originally committed as revision 20778 to svn://svn.ffmpeg.org/ffmpeg/trunk
Avoid the need to implement slice direction detection code, thus
reducing code duplication.
See the thread:
"[FFmpeg-devel] [PATCH] Add a slice_dir parameter to avfilter_start_frame()".
Originally committed as revision 20734 to svn://svn.ffmpeg.org/ffmpeg/trunk
draw_slice().
The chroma values to use are supposed to be those of the input format,
not that of the output format, the latter case was causing crashes and
chroma issues.
Originally committed as revision 20660 to svn://svn.ffmpeg.org/ffmpeg/trunk
The assumption depends on the corresponding assumption done by
sws_scale() and by the scale filter.
Originally committed as revision 20655 to svn://svn.ffmpeg.org/ffmpeg/trunk
Create a new static array containing pointers to the AVFilter
definitions, so that the non-constant next filter in the AVFilter
struct is not anymore required and the AVFilter definitions may be
stored in shareable memory.
Also change the signature for avfilter_register(), make it return an
int since it may fail if there is not enough space in the static array
for the registered filters.
Originally committed as revision 20605 to svn://svn.ffmpeg.org/ffmpeg/trunk
not correctly supported.
See the thread:
"[FFmpeg-devel] [PATCH] Remove not truly supported formats support from the crop filter".
Originally committed as revision 20576 to svn://svn.ffmpeg.org/ffmpeg/trunk
avfilter_default_get_video_buffer() if the get_video_buffer() callback
is not defined in a filter.
Libavfilter filters author have to explicitely define the
get_video_buffer() callback if they want the buffer to be requested to
the filter following in the filterchain.
See the thread:
"[FFmpeg-devel] [PATCH] Make avfilter_get_video_buffer() use
default_get_video_buffer if callback not defined".
Originally committed as revision 20444 to svn://svn.ffmpeg.org/ffmpeg/trunk
"video format and noformat filters" to
"format and noformat video filters",
as suggested by Diego.
Originally committed as revision 20442 to svn://svn.ffmpeg.org/ffmpeg/trunk
That was never required since avfilter_get_video_buffer() already
calls itself on the next link if get_video_buffer is not defined.
Originally committed as revision 20419 to svn://svn.ffmpeg.org/ffmpeg/trunk
for registering and finding filters, rather than use the struct
AVFilterList, which is removed.
Simplify the filter registration management code.
Originally committed as revision 20387 to svn://svn.ffmpeg.org/ffmpeg/trunk
Simplify the registration and iteration of all the registered filters,
consistent with what is done with formats / codecs.
Originally committed as revision 20385 to svn://svn.ffmpeg.org/ffmpeg/trunk
