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Code Issues Releases Activity

avfilter/vf_maskfun: add support for commands

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This commit is contained in:
Paul B Mahol 2021-02-09 11:23:19 +01:00
parent 8e027ca817
commit ca042675ee
2 changed files with 71 additions and 31 deletions
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4
doc/filters.texi
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@ -14403,6 +14403,10 @@ average, output frame will be completely filled with value set by @var{fill} opt
Typically useful for scene changes when used in combination with @code{tblend} filter.
@end table
@subsection Commands
This filter supports the all above options as @ref{commands}.
@section mcdeint
Apply motion-compensation deinterlacing.

98
libavfilter/vf_maskfun.c
View File

@ -47,14 +47,14 @@ typedef struct MaskFunContext {
} MaskFunContext;
#define OFFSET(x) offsetof(MaskFunContext, x)
#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define VFT AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption maskfun_options[] = {
{ "low", "set low threshold", OFFSET(low), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
{ "high", "set high threshold", OFFSET(high), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, VF },
{ "fill", "set fill value", OFFSET(fill), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, VF },
{ "sum", "set sum value", OFFSET(sum), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
{ "low", "set low threshold", OFFSET(low), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VFT },
{ "high", "set high threshold", OFFSET(high), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VFT },
{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, VFT },
{ "fill", "set fill value", OFFSET(fill), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, VFT },
{ "sum", "set sum value", OFFSET(sum), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VFT },
{ NULL }
};
@ -182,6 +182,45 @@ static int maskfun##name(AVFilterContext *ctx, void *arg, \
MASKFUN(8, uint8_t, 1)
MASKFUN(16, uint16_t, 2)
static void fill_frame(AVFilterContext *ctx)
{
MaskFunContext *s = ctx->priv;
s->fill = FFMIN(s->fill, s->max);
if (s->depth == 8) {
for (int p = 0; p < s->nb_planes; p++) {
uint8_t *dst = s->empty->data[p];
for (int y = 0; y < s->height[p]; y++) {
memset(dst, s->fill, s->width[p]);
dst += s->empty->linesize[p];
}
}
} else {
for (int p = 0; p < s->nb_planes; p++) {
uint16_t *dst = (uint16_t *)s->empty->data[p];
for (int y = 0; y < s->height[p]; y++) {
for (int x = 0; x < s->width[p]; x++)
dst[x] = s->fill;
dst += s->empty->linesize[p] / 2;
}
}
}
}
static void set_max_sum(AVFilterContext *ctx)
{
MaskFunContext *s = ctx->priv;
s->max_sum = 0;
for (int p = 0; p < s->nb_planes; p++) {
if (!((1 << p) & s->planes))
continue;
s->max_sum += (uint64_t)s->sum * s->width[p] * s->height[p];
}
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
@ -203,7 +242,6 @@ static int config_input(AVFilterLink *inlink)
s->depth = desc->comp[0].depth;
s->max = (1 << s->depth) - 1;
s->fill = FFMIN(s->fill, s->max);
if (s->depth == 8) {
s->maskfun = maskfun8;
@ -217,33 +255,30 @@ static int config_input(AVFilterLink *inlink)
if (!s->empty)
return AVERROR(ENOMEM);
if (s->depth == 8) {
for (int p = 0; p < s->nb_planes; p++) {
uint8_t *dst = s->empty->data[p];
fill_frame(ctx);
for (int y = 0; y < s->height[p]; y++) {
memset(dst, s->fill, s->width[p]);
dst += s->empty->linesize[p];
}
}
} else {
for (int p = 0; p < s->nb_planes; p++) {
uint16_t *dst = (uint16_t *)s->empty->data[p];
set_max_sum(ctx);
for (int y = 0; y < s->height[p]; y++) {
for (int x = 0; x < s->width[p]; x++)
dst[x] = s->fill;
dst += s->empty->linesize[p] / 2;
}
}
}
return 0;
}
s->max_sum = 0;
for (int p = 0; p < s->nb_planes; p++) {
if (!((1 << p) & s->planes))
continue;
s->max_sum += (uint64_t)s->sum * s->width[p] * s->height[p];
}
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
MaskFunContext *s = ctx->priv;
int fill = s->fill;
int sum = s->sum;
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
if (sum != s->sum)
set_max_sum(ctx);
if (fill != s->fill)
fill_frame(ctx);
return 0;
}
@ -284,4 +319,5 @@ AVFilter ff_vf_maskfun = {
.outputs = maskfun_outputs,
.priv_class = &maskfun_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};