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lavfi/testsrc: extend logic in request_frame, support static image output
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20e940e768
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@ -50,6 +50,8 @@ typedef struct {
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char *duration; ///< total duration of the generated video
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AVRational sar; ///< sample aspect ratio
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int nb_decimals;
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int draw_once; ///< draw only the first frame, always put out the same picture
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AVFilterBufferRef *picref; ///< cached reference containing the painted picture
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void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
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@ -123,6 +125,7 @@ static av_cold void uninit(AVFilterContext *ctx)
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TestSourceContext *test = ctx->priv;
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av_opt_free(test);
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avfilter_unref_bufferp(&test->picref);
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}
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static int config_props(AVFilterLink *outlink)
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@ -140,25 +143,40 @@ static int config_props(AVFilterLink *outlink)
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static int request_frame(AVFilterLink *outlink)
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{
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TestSourceContext *test = outlink->src->priv;
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AVFilterBufferRef *picref;
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int ret;
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AVFilterBufferRef *outpicref;
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int ret = 0;
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if (test->max_pts >= 0 && test->pts >= test->max_pts)
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return AVERROR_EOF;
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picref = ff_get_video_buffer(outlink, AV_PERM_WRITE, test->w, test->h);
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if (!picref)
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return AVERROR(ENOMEM);
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picref->pts = test->pts++;
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picref->pos = -1;
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picref->video->key_frame = 1;
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picref->video->interlaced = 0;
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picref->video->pict_type = AV_PICTURE_TYPE_I;
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picref->video->sample_aspect_ratio = test->sar;
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test->fill_picture_fn(outlink->src, picref);
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if (test->draw_once) {
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if (!test->picref) {
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test->picref =
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ff_get_video_buffer(outlink, AV_PERM_WRITE|AV_PERM_PRESERVE|AV_PERM_REUSE,
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test->w, test->h);
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if (!test->picref)
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return AVERROR(ENOMEM);
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test->fill_picture_fn(outlink->src, test->picref);
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}
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outpicref = avfilter_ref_buffer(test->picref, ~AV_PERM_WRITE);
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} else
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outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, test->w, test->h);
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if (!outpicref)
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return AVERROR(ENOMEM);
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outpicref->pts = test->pts;
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outpicref->pos = -1;
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outpicref->video->key_frame = 1;
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outpicref->video->interlaced = 0;
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outpicref->video->pict_type = AV_PICTURE_TYPE_I;
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outpicref->video->sample_aspect_ratio = test->sar;
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if (!test->draw_once)
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test->fill_picture_fn(outlink->src, outpicref);
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test->pts++;
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test->nb_frame++;
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if ((ret = ff_start_frame(outlink, picref)) < 0 ||
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if ((ret = ff_start_frame(outlink, outpicref)) < 0 ||
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(ret = ff_draw_slice(outlink, 0, test->h, 1)) < 0 ||
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(ret = ff_end_frame(outlink)) < 0)
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return ret;
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@ -493,6 +511,7 @@ static av_cold int rgbtest_init(AVFilterContext *ctx, const char *args)
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{
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TestSourceContext *test = ctx->priv;
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test->draw_once = 1;
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test->class = &rgbtestsrc_class;
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test->fill_picture_fn = rgbtest_fill_picture;
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return init(ctx, args);
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