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Viewing changes to libavfilter/vf_setpts.c

  • Committer: Package Import Robot
  • Author(s): Reinhard Tartler
  • Date: 2012-12-21 15:32:13 UTC
  • mto: (1.2.18)
  • mto: This revision was merged to the branch mainline in revision 34.
  • Revision ID: package-import@ubuntu.com-20121221153213-fudzrugjzivtv0wp
Tags: upstream-9~beta3
Import upstream version 9~beta3

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Lines of Context:
libavfilter/vf_setpts.c
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#define D2TS(d)  (isnan(d) ? AV_NOPTS_VALUE : (int64_t)(d))
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#define TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))
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static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
 
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static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *frame)
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{
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    SetPTSContext *setpts = inlink->dst->priv;
 
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    int64_t in_pts = frame->pts;
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    double d;
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    AVFilterBufferRef *outpicref = avfilter_ref_buffer(inpicref, ~0);
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    if (!outpicref)
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        return AVERROR(ENOMEM);
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    if (isnan(setpts->var_values[VAR_STARTPTS]))
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        setpts->var_values[VAR_STARTPTS] = TS2D(inpicref->pts);
 
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        setpts->var_values[VAR_STARTPTS] = TS2D(frame->pts);
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    setpts->var_values[VAR_INTERLACED] = inpicref->video->interlaced;
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    setpts->var_values[VAR_PTS       ] = TS2D(inpicref->pts);
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    setpts->var_values[VAR_POS       ] = inpicref->pos == -1 ? NAN : inpicref->pos;
 
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    setpts->var_values[VAR_INTERLACED] = frame->video->interlaced;
 
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    setpts->var_values[VAR_PTS       ] = TS2D(frame->pts);
 
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    setpts->var_values[VAR_POS       ] = frame->pos == -1 ? NAN : frame->pos;
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    d = av_expr_eval(setpts->expr, setpts->var_values, NULL);
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    outpicref->pts = D2TS(d);
 
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    frame->pts = D2TS(d);
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#ifdef DEBUG
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    av_log(inlink->dst, AV_LOG_DEBUG,
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           "n:%"PRId64" interlaced:%d pos:%"PRId64" pts:%"PRId64" t:%f -> pts:%"PRId64" t:%f\n",
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           (int64_t)setpts->var_values[VAR_N],
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           (int)setpts->var_values[VAR_INTERLACED],
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           inpicref ->pos,
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           inpicref ->pts, inpicref ->pts * av_q2d(inlink->time_base),
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           outpicref->pts, outpicref->pts * av_q2d(inlink->time_base));
 
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           frame->pos, in_pts, in_pts * av_q2d(inlink->time_base),
 
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           frame->pts, frame->pts * av_q2d(inlink->time_base));
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#endif
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    setpts->var_values[VAR_N] += 1.0;
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    setpts->var_values[VAR_PREV_INPTS ] = TS2D(inpicref ->pts);
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    setpts->var_values[VAR_PREV_OUTPTS] = TS2D(outpicref->pts);
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    return ff_start_frame(inlink->dst->outputs[0], outpicref);
 
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    setpts->var_values[VAR_PREV_INPTS ] = TS2D(in_pts);
 
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    setpts->var_values[VAR_PREV_OUTPTS] = TS2D(frame->pts);
 
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    return ff_filter_frame(inlink->dst->outputs[0], frame);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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        .type             = AVMEDIA_TYPE_VIDEO,
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        .get_video_buffer = ff_null_get_video_buffer,
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        .config_props     = config_input,
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        .start_frame      = start_frame,
 
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        .filter_frame     = filter_frame,
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    },
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    { NULL }
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};