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vf_cropdetect: use the name 's' for the pointer to the private context

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This is shorter and consistent across filters.
This commit is contained in:
Anton Khirnov 2013-03-18 20:44:36 +01:00
parent 671563d9fd
commit e16e23d70e
1 changed files with 41 additions and 41 deletions
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82
libavfilter/vf_cropdetect.c
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@ -88,12 +88,12 @@ static int checkline(void *ctx, const unsigned char *src, int stride, int len, i
static av_cold int init(AVFilterContext *ctx)
{
CropDetectContext *cd = ctx->priv;
CropDetectContext *s = ctx->priv;
cd->frame_nb = -2;
s->frame_nb = -2;
av_log(ctx, AV_LOG_VERBOSE, "limit:%d round:%d reset_count:%d\n",
cd->limit, cd->round, cd->reset_count);
s->limit, s->round, s->reset_count);
return 0;
}
@ -101,15 +101,15 @@ static av_cold int init(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
CropDetectContext *cd = ctx->priv;
CropDetectContext *s = ctx->priv;
av_image_fill_max_pixsteps(cd->max_pixsteps, NULL,
av_image_fill_max_pixsteps(s->max_pixsteps, NULL,
av_pix_fmt_desc_get(inlink->format));
cd->x1 = inlink->w - 1;
cd->y1 = inlink->h - 1;
cd->x2 = 0;
cd->y2 = 0;
s->x1 = inlink->w - 1;
s->y1 = inlink->h - 1;
s->x2 = 0;
s->y2 = 0;
return 0;
}
@ -117,75 +117,75 @@ static int config_input(AVFilterLink *inlink)
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
CropDetectContext *cd = ctx->priv;
int bpp = cd->max_pixsteps[0];
CropDetectContext *s = ctx->priv;
int bpp = s->max_pixsteps[0];
int w, h, x, y, shrink_by;
// ignore first 2 frames - they may be empty
if (++cd->frame_nb > 0) {
if (++s->frame_nb > 0) {
// Reset the crop area every reset_count frames, if reset_count is > 0
if (cd->reset_count > 0 && cd->frame_nb > cd->reset_count) {
cd->x1 = frame->width - 1;
cd->y1 = frame->height - 1;
cd->x2 = 0;
cd->y2 = 0;
cd->frame_nb = 1;
if (s->reset_count > 0 && s->frame_nb > s->reset_count) {
s->x1 = frame->width - 1;
s->y1 = frame->height - 1;
s->x2 = 0;
s->y2 = 0;
s->frame_nb = 1;
}
for (y = 0; y < cd->y1; y++) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > cd->limit) {
cd->y1 = y;
for (y = 0; y < s->y1; y++) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > s->limit) {
s->y1 = y;
break;
}
}
for (y = frame->height - 1; y > cd->y2; y--) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > cd->limit) {
cd->y2 = y;
for (y = frame->height - 1; y > s->y2; y--) {
if (checkline(ctx, frame->data[0] + frame->linesize[0] * y, bpp, frame->width, bpp) > s->limit) {
s->y2 = y;
break;
}
}
for (y = 0; y < cd->x1; y++) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > cd->limit) {
cd->x1 = y;
for (y = 0; y < s->x1; y++) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > s->limit) {
s->x1 = y;
break;
}
}
for (y = frame->width - 1; y > cd->x2; y--) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > cd->limit) {
cd->x2 = y;
for (y = frame->width - 1; y > s->x2; y--) {
if (checkline(ctx, frame->data[0] + bpp*y, frame->linesize[0], frame->height, bpp) > s->limit) {
s->x2 = y;
break;
}
}
// round x and y (up), important for yuv colorspaces
// make sure they stay rounded!
x = (cd->x1+1) & ~1;
y = (cd->y1+1) & ~1;
x = (s->x1+1) & ~1;
y = (s->y1+1) & ~1;
w = cd->x2 - x + 1;
h = cd->y2 - y + 1;
w = s->x2 - x + 1;
h = s->y2 - y + 1;
// w and h must be divisible by 2 as well because of yuv
// colorspace problems.
if (cd->round <= 1)
cd->round = 16;
if (cd->round % 2)
cd->round *= 2;
if (s->round <= 1)
s->round = 16;
if (s->round % 2)
s->round *= 2;
shrink_by = w % cd->round;
shrink_by = w % s->round;
w -= shrink_by;
x += (shrink_by/2 + 1) & ~1;
shrink_by = h % cd->round;
shrink_by = h % s->round;
h -= shrink_by;
y += (shrink_by/2 + 1) & ~1;
av_log(ctx, AV_LOG_INFO,
"x1:%d x2:%d y1:%d y2:%d w:%d h:%d x:%d y:%d pts:%"PRId64" t:%f crop=%d:%d:%d:%d\n",
cd->x1, cd->x2, cd->y1, cd->y2, w, h, x, y, frame->pts,
s->x1, s->x2, s->y1, s->y2, w, h, x, y, frame->pts,
frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base),
w, h, x, y);
}