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Code Issues Releases Activity

avfilter/vf_maskedmerge: rewrite and remove some duplicated code

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
2015-09-30 22:23:26 +02:00
parent 9b4dd0f876
commit 1da1574002
1 changed files with 50 additions and 49 deletions
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119
libavfilter/vf_maskedmerge.c
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@@ -35,8 +35,11 @@ typedef struct MaskedMergeContext {
int max, half, depth;
FFFrameSync fs;
void (*maskedmerge)(struct MaskedMergeContext *s, const AVFrame *base,
const AVFrame *overlay, const AVFrame *mask, AVFrame *out);
void (*maskedmerge)(struct MaskedMergeContext *s,
const uint8_t *bsrc, int blinesize,
const uint8_t *osrc, int olinesize,
const uint8_t *msrc, int mlinesize,
uint8_t *dst, int dlinesize, int w, int h);
} MaskedMergeContext;
#define OFFSET(x) offsetof(MaskedMergeContext, x)
@@ -92,78 +95,76 @@ static int process_frame(FFFrameSync *fs)
if (!out)
return AVERROR(ENOMEM);
} else {
int p;
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
av_frame_copy_props(out, base);
s->maskedmerge(s, base, overlay, mask, out);
}
out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, out);
}
static void maskedmerge8(MaskedMergeContext *s, const AVFrame *base,
const AVFrame *overlay, const AVFrame *mask, AVFrame *out)
{
int p, x, y;
for (p = 0; p < s->nb_planes; p++) {
const uint8_t *bsrc = base->data[p];
const uint8_t *osrc = overlay->data[p];
const uint8_t *msrc = mask->data[p];
uint8_t *dst = out->data[p];
if (!((1 << p) & s->planes)) {
av_image_copy_plane(dst, out->linesize[p], bsrc, base->linesize[p],
s->width[p], s->height[p]);
continue;
}
for (y = 0; y < s->height[p]; y++) {
for (x = 0; x < s->width[p]; x++) {
dst[x] = ((256 - msrc[x]) * bsrc[x] + msrc[x] * osrc[x] + 128) >> 8;
}
dst += out->linesize[p];
bsrc += base->linesize[p];
osrc += overlay->linesize[p];
msrc += mask->linesize[p];
}
}
}
static void maskedmerge16(MaskedMergeContext *s, const AVFrame *base,
const AVFrame *overlay, const AVFrame *mask, AVFrame *out)
{
const int max = s->max;
const int half = s->half;
const int shift = s->depth;
int p, x, y;
for (p = 0; p < s->nb_planes; p++) {
const uint16_t *bsrc = (const uint16_t *)base->data[p];
const uint16_t *osrc = (const uint16_t *)overlay->data[p];
const uint16_t *msrc = (const uint16_t *)mask->data[p];
uint16_t *dst = (uint16_t *)out->data[p];
if (!((1 << p) & s->planes)) {
av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
s->width[p], s->height[p]);
continue;
}
for (y = 0; y < s->height[p]; y++) {
for (x = 0; x < s->width[p]; x++) {
s->maskedmerge(s, base->data[p], base->linesize[p],
overlay->data[p], overlay->linesize[p],
mask->data[p], mask->linesize[p],
out->data[p], out->linesize[p],
s->width[p], s->height[p]);
}
}
out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, out);
}
static void maskedmerge8(MaskedMergeContext *s,
const uint8_t *bsrc, int blinesize,
const uint8_t *osrc, int olinesize,
const uint8_t *msrc, int mlinesize,
uint8_t *dst, int dlinesize, int w, int h)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((256 - msrc[x]) * bsrc[x] + msrc[x] * osrc[x] + 128) >> 8;
}
dst += dlinesize;
bsrc += blinesize;
osrc += olinesize;
msrc += mlinesize;
}
}
static void maskedmerge16(MaskedMergeContext *s,
const uint8_t *bbsrc, int blinesize,
const uint8_t *oosrc, int olinesize,
const uint8_t *mmsrc, int mlinesize,
uint8_t *ddst, int dlinesize, int w, int h)
{
const int max = s->max;
const int half = s->half;
const int shift = s->depth;
const uint16_t *bsrc = (const uint16_t *)bbsrc;
const uint16_t *osrc = (const uint16_t *)oosrc;
const uint16_t *msrc = (const uint16_t *)mmsrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
dst[x] = ((max - msrc[x]) * bsrc[x] + msrc[x] * osrc[x] + half) >> shift;
}
dst += out->linesize[p] / 2;
bsrc += base->linesize[p] / 2;
osrc += overlay->linesize[p] / 2;
msrc += mask->linesize[p] / 2;
}
dst += dlinesize / 2;
bsrc += blinesize / 2;
osrc += olinesize / 2;
msrc += mlinesize / 2;
}
}