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lavfi/showspectrum: set default height to 512 

Only power-of-two FFTs are supported; so to get a full spectrum
(that is, one up to Nyquist), the height must be a power of two.

Therefore, change the default height from 480 to 512.

Signed-off-by: Rudolf Polzer <divverent@xonotic.org>
This commit is contained in:
Rudolf Polzer 2013-02-03 17:03:39 +00:00 committed by Paul B Mahol
parent 4d37d2bfc5
commit 773fc6e0c7
2 changed files with 3 additions and 3 deletions
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2
doc/filters.texi
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@ -6019,7 +6019,7 @@ spectrum.
The filter accepts the following named parameters:
@table @option
@item size, s
Specify the video size for the output. Default value is @code{640x480}.
Specify the video size for the output. Default value is @code{640x512}.
@item slide
Specify if the spectrum should slide along the window. Default value is
@code{0}.

4
libavfilter/avf_showspectrum.c
View File

@ -51,8 +51,8 @@ typedef struct {
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption showspectrum_options[] = {
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x480"}, 0, 0, FLAGS },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS },
{ "slide", "set sliding mode", OFFSET(sliding), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS },
{ NULL },
};