return ret;
}
-void ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+int ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
AVFilterBufferRef *buf_out = avfilter_ref_buffer(picref, ~0);
- ff_start_frame(link->dst->outputs[0], buf_out);
+ if (!buf_out)
+ return AVERROR(ENOMEM);
+ return ff_start_frame(link->dst->outputs[0], buf_out);
}
-static void default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
+// for filters that support (but don't require) outpic==inpic
+int ff_inplace_start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+{
+ AVFilterLink *outlink = inlink->dst->outputs[0];
+ AVFilterBufferRef *outpicref = NULL, *for_next_filter;
+ int ret = 0;
+
+ if ((inpicref->perms & AV_PERM_WRITE) && !(inpicref->perms & AV_PERM_PRESERVE)) {
+ outpicref = avfilter_ref_buffer(inpicref, ~0);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+ } else {
+ outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+
+ avfilter_copy_buffer_ref_props(outpicref, inpicref);
+ outpicref->video->w = outlink->w;
+ outpicref->video->h = outlink->h;
+ }
+
+ for_next_filter = avfilter_ref_buffer(outpicref, ~0);
+ if (for_next_filter)
+ ret = ff_start_frame(outlink, for_next_filter);
+ else
+ ret = AVERROR(ENOMEM);
+
+ if (ret < 0) {
+ avfilter_unref_bufferp(&outpicref);
+ return ret;
+ }
+
+ outlink->out_buf = outpicref;
+ return 0;
+}
+
+static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
{
AVFilterLink *outlink = NULL;
outlink = inlink->dst->outputs[0];
if (outlink) {
+ AVFilterBufferRef *buf_out;
outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!outlink->out_buf)
+ return AVERROR(ENOMEM);
+
avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
- ff_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
+ buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
+ if (!buf_out)
+ return AVERROR(ENOMEM);
+
+ return ff_start_frame(outlink, buf_out);
}
+ return 0;
+}
+
+static void clear_link(AVFilterLink *link)
+{
+ avfilter_unref_bufferp(&link->cur_buf);
+ avfilter_unref_bufferp(&link->src_buf);
+ avfilter_unref_bufferp(&link->out_buf);
}
/* XXX: should we do the duplicating of the picture ref here, instead of
* forcing the source filter to do it? */
-void ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
- void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
+ int (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
AVFilterPad *dst = link->dstpad;
- int perms = picref->perms;
+ int ret, perms = picref->perms;
FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1);
link->dstpad->min_perms, link->dstpad->rej_perms);
link->cur_buf = ff_get_video_buffer(link, dst->min_perms, link->w, link->h);
+ if (!link->cur_buf) {
+ avfilter_unref_bufferp(&picref);
+ return AVERROR(ENOMEM);
+ }
+
link->src_buf = picref;
avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
}
else
link->cur_buf = picref;
- start_frame(link, link->cur_buf);
+ ret = start_frame(link, link->cur_buf);
+ if (ret < 0)
+ clear_link(link);
+
+ return ret;
}
-void ff_null_end_frame(AVFilterLink *link)
+int ff_null_end_frame(AVFilterLink *link)
{
- ff_end_frame(link->dst->outputs[0]);
+ return ff_end_frame(link->dst->outputs[0]);
}
-static void default_end_frame(AVFilterLink *inlink)
+static int default_end_frame(AVFilterLink *inlink)
{
AVFilterLink *outlink = NULL;
outlink = inlink->dst->outputs[0];
if (outlink) {
- ff_end_frame(outlink);
+ return ff_end_frame(outlink);
}
+ return 0;
}
-void ff_end_frame(AVFilterLink *link)
+int ff_end_frame(AVFilterLink *link)
{
- void (*end_frame)(AVFilterLink *);
+ int (*end_frame)(AVFilterLink *);
+ int ret;
if (!(end_frame = link->dstpad->end_frame))
end_frame = default_end_frame;
- end_frame(link);
+ ret = end_frame(link);
- /* unreference the source picture if we're feeding the destination filter
- * a copied version dues to permission issues */
- if (link->src_buf) {
- avfilter_unref_buffer(link->src_buf);
- link->src_buf = NULL;
- }
- avfilter_unref_bufferp(&link->cur_buf);
- avfilter_unref_bufferp(&link->out_buf);
+ clear_link(link);
+
+ return ret;
}
-void ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+int ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
- ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
+ return ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
}
-static void default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+static int default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
{
AVFilterLink *outlink = NULL;
outlink = inlink->dst->outputs[0];
if (outlink)
- ff_draw_slice(outlink, y, h, slice_dir);
+ return ff_draw_slice(outlink, y, h, slice_dir);
+ return 0;
}
-void ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
uint8_t *src[4], *dst[4];
- int i, j, vsub;
- void (*draw_slice)(AVFilterLink *, int, int, int);
+ int i, j, vsub, ret;
+ int (*draw_slice)(AVFilterLink *, int, int, int);
FF_DPRINTF_START(NULL, draw_slice); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
if (!(draw_slice = link->dstpad->draw_slice))
draw_slice = default_draw_slice;
- draw_slice(link, y, h, slice_dir);
+ ret = draw_slice(link, y, h, slice_dir);
+ if (ret < 0)
+ clear_link(link);
+ return ret;
}
projects / ffmpeg / blobdiff