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lavfi/aspect: restore ratio parsing

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Allow to set a ratio as "a:b" (with proper escaping), and correctly
honour the max parameter.
This commit is contained in:
Stefano Sabatini 2013-04-16 16:29:41 +02:00
parent 8bfd878151
commit fe5ca6b913
1 changed files with 19 additions and 14 deletions
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33
libavfilter/vf_aspect.c
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@ -42,22 +42,31 @@ typedef struct {
#if FF_API_OLD_FILTER_OPTS
float aspect_num, aspect_den;
#endif
char *ratio_str;
} AspectContext;
#if FF_API_OLD_FILTER_OPTS
static av_cold int init(AVFilterContext *ctx)
{
AspectContext *s = ctx->priv;
int ret;
#if FF_API_OLD_FILTER_OPTS
if (s->aspect_num > 0 && s->aspect_den > 0) {
av_log(ctx, AV_LOG_WARNING,
"num:den syntax is deprecated, please use num/den or named options instead\n");
s->aspect = av_d2q(s->aspect_num / s->aspect_den, s->max);
}
#endif
if (s->ratio_str) {
ret = av_parse_ratio(&s->aspect, s->ratio_str, s->max, 0, ctx);
if (ret < 0 || s->aspect.num < 0 || s->aspect.den <= 0) {
av_log(ctx, AV_LOG_ERROR,
"Invalid string '%s' for aspect ratio\n", s->ratio_str);
return AVERROR(EINVAL);
}
}
return 0;
}
#endif
static int filter_frame(AVFilterLink *link, AVFrame *frame)
{
@ -80,7 +89,7 @@ static int setdar_config_props(AVFilterLink *inlink)
if (aspect->aspect.num && aspect->aspect.den) {
av_reduce(&aspect->aspect.num, &aspect->aspect.den,
aspect->aspect.num * inlink->h,
aspect->aspect.den * inlink->w, 100);
aspect->aspect.den * inlink->w, INT_MAX);
inlink->sample_aspect_ratio = aspect->aspect;
} else {
inlink->sample_aspect_ratio = (AVRational){ 1, 1 };
@ -99,9 +108,9 @@ static const AVOption setdar_options[] = {
{ "dar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
{ "dar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
#endif
{ "dar", "set display aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "ratio", "set display aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "r", "set display aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "dar", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "ratio", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "r", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "max", "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
{ NULL }
};
@ -130,11 +139,7 @@ static const AVFilterPad avfilter_vf_setdar_outputs[] = {
AVFilter avfilter_vf_setdar = {
.name = "setdar",
.description = NULL_IF_CONFIG_SMALL("Set the frame display aspect ratio."),
#if FF_API_OLD_FILTER_OPTS
.init = init,
#endif
.priv_size = sizeof(AspectContext),
.priv_class = &setdar_class,
@ -162,9 +167,9 @@ static const AVOption setsar_options[] = {
{ "sar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
{ "sar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
#endif
{ "sar", "set sample (pixel) aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "ratio", "set sample (pixel) aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "r", "set sample (pixel) aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS },
{ "sar", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "ratio", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "r", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
{ "max", "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
{ NULL }
};