---
libavfilter/vf_pad.c | 151 ++++++++++++++++----------------------------------
1 file changed, 49 insertions(+), 102 deletions(-)
diff --git a/libavfilter/vf_pad.c b/libavfilter/vf_pad.c
index c14835d..f1a890e 100644
--- a/libavfilter/vf_pad.c
+++ b/libavfilter/vf_pad.c
@@ -106,7 +106,6 @@ typedef struct {
uint8_t *line[4];
int line_step[4];
int hsub, vsub; ///< chroma subsampling values
- int needs_copy;
} PadContext;
static av_cold int init(AVFilterContext *ctx, const char *args)
@@ -303,135 +302,85 @@ static int does_clip(PadContext *pad, AVFilterBufferRef
*outpicref, int plane, i
return 0;
}
-static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *in)
{
PadContext *pad = inlink->dst->priv;
- AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
- AVFilterBufferRef *for_next_filter;
- int plane, ret = 0;
+ AVFilterBufferRef *out = avfilter_ref_buffer(in, ~0);
+ int plane, needs_copy;
- if (!outpicref)
+ if (!out) {
+ avfilter_unref_bufferp(&in);
return AVERROR(ENOMEM);
+ }
- for (plane = 0; plane < 4 && outpicref->data[plane]; plane++) {
+ for (plane = 0; plane < 4 && out->data[plane]; plane++) {
int hsub = (plane == 1 || plane == 2) ? pad->hsub : 0;
int vsub = (plane == 1 || plane == 2) ? pad->vsub : 0;
- av_assert0(outpicref->buf->w>0 && outpicref->buf->h>0);
+ av_assert0(out->buf->w > 0 && out->buf->h > 0);
- if(outpicref->format != outpicref->buf->format) //unsupported currently
+ if (out->format != out->buf->format) //unsupported currently
break;
- outpicref->data[plane] -= (pad->x >> hsub) * pad
->line_step[plane]
- + (pad->y >> vsub) * outpicref->linesize
[plane];
+ out->data[plane] -= (pad->x >> hsub) * pad->line_step[plane] +
+ (pad->y >> vsub) * out->linesize [plane];
- if( does_clip(pad, outpicref, plane, hsub, vsub, 0, 0)
- || does_clip(pad, outpicref, plane, hsub, vsub, 0, pad->h-1)
- || does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, 0)
- || does_clip(pad, outpicref, plane, hsub, vsub, pad->w-1, pad->h-1)
- )
+ if (does_clip(pad, out, plane, hsub, vsub, 0, 0) ||
+ does_clip(pad, out, plane, hsub, vsub, 0, pad->h - 1) ||
+ does_clip(pad, out, plane, hsub, vsub, pad->w - 1, 0) ||
+ does_clip(pad, out, plane, hsub, vsub, pad->w - 1, pad->h - 1))
break;
}
- pad->needs_copy= plane < 4 && outpicref->data[plane];
- if(pad->needs_copy){
+ needs_copy = plane < 4 && out->data[plane];
+ if (needs_copy) {
av_log(inlink->dst, AV_LOG_DEBUG, "Direct padding impossible
allocating new frame\n");
- avfilter_unref_buffer(outpicref);
- outpicref = ff_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE
| AV_PERM_NEG_LINESIZES,
- FFMAX(inlink->w, pad->w),
- FFMAX(inlink->h, pad->h));
- if (!outpicref)
+ avfilter_unref_buffer(out);
+ out = ff_get_video_buffer(inlink->dst->outputs[0], AV_PERM_WRITE |
AV_PERM_NEG_LINESIZES,
+ FFMAX(inlink->w, pad->w),
+ FFMAX(inlink->h, pad->h));
+ if (!out) {
+ avfilter_unref_bufferp(&in);
return AVERROR(ENOMEM);
+ }
- avfilter_copy_buffer_ref_props(outpicref, inpicref);
- }
-
- outpicref->video->w = pad->w;
- outpicref->video->h = pad->h;
-
- for_next_filter = avfilter_ref_buffer(outpicref, ~0);
- if (!for_next_filter) {
- ret = AVERROR(ENOMEM);
- goto fail;
+ avfilter_copy_buffer_ref_props(out, in);
}
- ret = ff_start_frame(inlink->dst->outputs[0], for_next_filter);
- if (ret < 0)
- goto fail;
-
- inlink->dst->outputs[0]->out_buf = outpicref;
- return 0;
-
-fail:
- avfilter_unref_bufferp(&outpicref);
- return ret;
-}
-
-static int end_frame(AVFilterLink *link)
-{
- return ff_end_frame(link->dst->outputs[0]);
-}
+ out->video->w = pad->w;
+ out->video->h = pad->h;
-static int draw_send_bar_slice(AVFilterLink *link, int y, int h, int
slice_dir, int before_slice)
-{
- PadContext *pad = link->dst->priv;
- int bar_y, bar_h = 0, ret = 0;
-
- if (slice_dir * before_slice == 1 && y == pad->y) {
- /* top bar */
- bar_y = 0;
- bar_h = pad->y;
- } else if (slice_dir * before_slice == -1 && (y + h) == (pad->y +
pad->in_h)) {
- /* bottom bar */
- bar_y = pad->y + pad->in_h;
- bar_h = pad->h - pad->in_h - pad->y;
+ /* top bar */
+ if (pad->y) {
+ ff_draw_rectangle(out->data, out->linesize,
+ pad->line, pad->line_step, pad->hsub, pad->vsub,
+ 0, 0, pad->w, pad->y);
}
- if (bar_h) {
- ff_draw_rectangle(link->dst->outputs[0]->out_buf->data,
- link->dst->outputs[0]->out_buf->linesize,
+ /* bottom bar */
+ if (pad->h > pad->y + pad->in_h) {
+ ff_draw_rectangle(out->data, out->linesize,
pad->line, pad->line_step, pad->hsub, pad->vsub,
- 0, bar_y, pad->w, bar_h);
- ret = ff_draw_slice(link->dst->outputs[0], bar_y, bar_h, slice_dir);
+ 0, pad->y + pad->in_h, pad->w, pad->h - pad->y -
pad->in_h);
}
- return ret;
-}
-
-static int draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- PadContext *pad = link->dst->priv;
- AVFilterBufferRef *outpic = link->dst->outputs[0]->out_buf;
- AVFilterBufferRef *inpic = link->cur_buf;
- int ret;
-
- y += pad->y;
-
- y &= ~((1 << pad->vsub) - 1);
- h &= ~((1 << pad->vsub) - 1);
-
- if (!h)
- return 0;
- draw_send_bar_slice(link, y, h, slice_dir, 1);
/* left border */
- ff_draw_rectangle(outpic->data, outpic->linesize, pad->line,
pad->line_step,
- pad->hsub, pad->vsub, 0, y, pad->x, h);
-
- if(pad->needs_copy){
- ff_copy_rectangle(outpic->data, outpic->linesize,
- inpic->data, inpic->linesize, pad->line_step,
- pad->hsub, pad->vsub,
- pad->x, y, y-pad->y, inpic->video->w, h);
+ ff_draw_rectangle(out->data, out->linesize, pad->line, pad->line_step,
+ pad->hsub, pad->vsub, 0, pad->y, pad->x, in->video->h);
+
+ if (needs_copy) {
+ ff_copy_rectangle(out->data, out->linesize, in->data, in->linesize,
+ pad->line_step, pad->hsub, pad->vsub,
+ pad->x, pad->y, 0, in->video->w, in->video->h);
}
/* right border */
- ff_draw_rectangle(outpic->data, outpic->linesize,
+ ff_draw_rectangle(out->data, out->linesize,
pad->line, pad->line_step, pad->hsub, pad->vsub,
- pad->x + pad->in_w, y, pad->w - pad->x - pad->in_w, h);
- ret = ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
- if (ret < 0)
- return ret;
+ pad->x + pad->in_w, pad->y, pad->w - pad->x - pad->in_w,
+ in->video->h);
- return draw_send_bar_slice(link, y, h, slice_dir, -1);
+ avfilter_unref_bufferp(&in);
+ return ff_filter_frame(inlink->dst->outputs[0], out);
}
static const AVFilterPad avfilter_vf_pad_inputs[] = {
@@ -440,9 +389,7 @@ static const AVFilterPad avfilter_vf_pad_inputs[] = {
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
.get_video_buffer = get_video_buffer,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .end_frame = end_frame,
+ .filter_frame = filter_frame,
},
{ NULL }
};
--
1.7.10.4
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