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avfilter/vf_spp: support setting dct avoptions from the filter graph string

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-07-28 05:16:03 +02:00
parent cab8fc624b
commit a06c14a48e
1 changed files with 34 additions and 3 deletions
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37
libavfilter/vf_spp.c
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@ -44,6 +44,17 @@ enum mode {
NB_MODES
};
static const AVClass *child_class_next(const AVClass *prev)
{
return prev ? NULL : avcodec_dct_get_class();
}
static void *child_next(void *obj, void *prev)
{
SPPContext *s = obj;
return prev ? NULL : s->dct;
}
#define OFFSET(x) offsetof(SPPContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption spp_options[] = {
@ -56,7 +67,15 @@ static const AVOption spp_options[] = {
{ NULL }
};
AVFILTER_DEFINE_CLASS(spp);
static const AVClass spp_class = {
.class_name = "spp",
.item_name = av_default_item_name,
.option = spp_options,
.version = LIBAVUTIL_VERSION_INT,
.category = AV_CLASS_CATEGORY_FILTER,
.child_class_next = child_class_next,
.child_next = child_next,
};
// XXX: share between filters?
DECLARE_ALIGNED(8, static const uint8_t, ldither)[8][8] = {
@ -372,15 +391,27 @@ static int process_command(AVFilterContext *ctx, const char *cmd, const char *ar
return AVERROR(ENOSYS);
}
static av_cold int init(AVFilterContext *ctx)
static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
{
SPPContext *spp = ctx->priv;
int ret;
spp->avctx = avcodec_alloc_context3(NULL);
spp->dct = avcodec_dct_alloc();
if (!spp->avctx || !spp->dct)
return AVERROR(ENOMEM);
ff_pixblockdsp_init(&spp->pdsp, spp->avctx);
if (opts) {
AVDictionaryEntry *e = NULL;
while ((e = av_dict_get(*opts, "", e, AV_DICT_IGNORE_SUFFIX))) {
if ((ret = av_opt_set(spp->dct, e->key, e->value, 0)) < 0)
return ret;
}
av_dict_free(opts);
}
avcodec_dct_init(spp->dct);
spp->store_slice = store_slice_c;
switch (spp->mode) {
@ -428,7 +459,7 @@ AVFilter ff_vf_spp = {
.name = "spp",
.description = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."),
.priv_size = sizeof(SPPContext),
.init = init,
.init_dict = init_dict,
.uninit = uninit,
.query_formats = query_formats,
.inputs = spp_inputs,