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lavfi/showwaves: make use of AV_OPT_TYPE_VIDEO_RATE 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-03-16 19:00:39 +00:00
parent 7aa9af51db
commit ac44e52f50
1 changed files with 3 additions and 18 deletions
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21
libavfilter/avf_showwaves.c
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@ -41,7 +41,6 @@ enum ShowWavesMode {
typedef struct {
const AVClass *class;
int w, h;
char *rate_str;
AVRational rate;
int buf_idx;
AVFrame *outpicref;
@ -55,8 +54,8 @@ 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_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "r", "set video rate", OFFSET(rate_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "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 },
{ "n", "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
@ -88,7 +87,6 @@ static av_cold void uninit(AVFilterContext *ctx)
{
ShowWavesContext *showwaves = ctx->priv;
av_freep(&showwaves->rate_str);
av_frame_free(&showwaves->outpicref);
}
@ -131,22 +129,9 @@ static int config_output(AVFilterLink *outlink)
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = ctx->inputs[0];
ShowWavesContext *showwaves = ctx->priv;
int err;
if (showwaves->n && showwaves->rate_str) {
av_log(ctx, AV_LOG_ERROR, "Options 'n' and 'rate' cannot be set at the same time\n");
return AVERROR(EINVAL);
}
if (!showwaves->n) {
if (!showwaves->rate_str)
showwaves->rate = (AVRational){25,1}; /* set default value */
else if ((err = av_parse_video_rate(&showwaves->rate, showwaves->rate_str)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", showwaves->rate_str);
return err;
}
if (!showwaves->n)
showwaves->n = FFMAX(1, ((double)inlink->sample_rate / (showwaves->w * av_q2d(showwaves->rate))) + 0.5);
}
outlink->w = showwaves->w;
outlink->h = showwaves->h;