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lavfi/showwaves: switch to an AVOptions-based system.

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This commit is contained in:
Clément Bœsch 2013-04-11 14:17:20 +02:00
parent 38788f2de5
commit 3c2e4c2a9b
3 changed files with 11 additions and 26 deletions
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8
doc/filters.texi
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@ -7140,8 +7140,12 @@ ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1];
Convert input audio to a video output, representing the samples waves.
The filter accepts the following named parameters:
The filter accepts the following options:
@table @option
@item size, s
Specify the video size for the output. Default value is "600x240".
@item mode
Set display mode.
@ -7166,8 +7170,6 @@ is not explicitly specified.
Set the (approximate) output frame rate. This is done by setting the
option @var{n}. Default value is "25".
@item size, s
Specify the video size for the output. Default value is "600x240".
@end table
@subsection Examples

28
libavfilter/avf_showwaves.c
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@ -54,35 +54,19 @@ typedef struct {
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption showwaves_options[] = {
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
{ "mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, FLAGS, "mode"},
{ "point", "draw a point for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT}, .flags=FLAGS, .unit="mode"},
{ "line", "draw a line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE}, .flags=FLAGS, .unit="mode"},
{ "n", "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
{"mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, FLAGS, "mode"},
{"point", "draw a point for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT}, .flags=FLAGS, .unit="mode"},
{"line", "draw a line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE}, .flags=FLAGS, .unit="mode"},
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
{ NULL },
};
AVFILTER_DEFINE_CLASS(showwaves);
static av_cold int init(AVFilterContext *ctx, const char *args)
{
ShowWavesContext *showwaves = ctx->priv;
int err;
showwaves->class = &showwaves_class;
av_opt_set_defaults(showwaves);
showwaves->buf_idx = 0;
if ((err = av_set_options_string(showwaves, args, "=", ":")) < 0)
return err;
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
ShowWavesContext *showwaves = ctx->priv;
@ -133,6 +117,7 @@ static int config_output(AVFilterLink *outlink)
if (!showwaves->n)
showwaves->n = FFMAX(1, ((double)inlink->sample_rate / (showwaves->w * av_q2d(showwaves->rate))) + 0.5);
showwaves->buf_idx = 0;
outlink->w = showwaves->w;
outlink->h = showwaves->h;
outlink->sample_aspect_ratio = (AVRational){1,1};
@ -261,7 +246,6 @@ static const AVFilterPad showwaves_outputs[] = {
AVFilter avfilter_avf_showwaves = {
.name = "showwaves",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a video output."),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.priv_size = sizeof(ShowWavesContext),

1
libavfilter/avfilter.c
View File

@ -694,7 +694,6 @@ static const char *const filters_left_to_update[] = {
"sendcmd",
"setdar",
"setsar",
"showwaves",
"smptebars",
};