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vf_drawtext: don't give up its own reference to the input buffer.

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Directly forwarding the input buffer to the next filter means that
drawtext no longer owns any references to it and thus shouldn't refer to
it in any way.
This commit is contained in:
Anton Khirnov
2012-07-08 04:20:22 +02:00
parent d19499c796
commit 7155763b78
1 changed files with 4 additions and 1 deletions
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5
libavfilter/vf_drawtext.c
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@ -812,6 +812,7 @@ static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
{
AVFilterContext *ctx = inlink->dst;
DrawTextContext *dtext = ctx->priv;
AVFilterBufferRef *buf_out;
int fail = 0;
if (dtext_prepare_text(ctx) < 0) {
@ -850,7 +851,8 @@ static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
(int)dtext->var_values[VAR_N], dtext->var_values[VAR_T],
dtext->x, dtext->y, dtext->x+dtext->w, dtext->y+dtext->h);
ff_start_frame(inlink->dst->outputs[0], inpicref);
buf_out = avfilter_ref_buffer(inpicref, ~0);
ff_start_frame(inlink->dst->outputs[0], buf_out);
}
static void end_frame(AVFilterLink *inlink)
@ -866,6 +868,7 @@ static void end_frame(AVFilterLink *inlink)
ff_draw_slice(outlink, 0, picref->video->h, 1);
ff_end_frame(outlink);
avfilter_unref_buffer(inlink->cur_buf);
}
AVFilter avfilter_vf_drawtext = {