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lavfi/tile: add nb_frames option.

This commit is contained in:
Clément Bœsch 2012-11-08 23:12:43 +01:00
parent ecfaff350f
commit 4a90e7124d
1 changed files with 15 additions and 3 deletions
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18
libavfilter/vf_tile.c
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@ -37,6 +37,7 @@ typedef struct {
unsigned margin;
unsigned padding;
unsigned current;
unsigned nb_frames;
FFDrawContext draw;
FFDrawColor blank;
} TileContext;
@ -53,6 +54,8 @@ static const AVOption tile_options[] = {
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
{ "padding", "set inner border thickness in pixels", OFFSET(padding),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1024, FLAGS },
{ "nb_frames", "set maximum number of frame to render", OFFSET(nb_frames),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
{NULL},
};
@ -75,6 +78,15 @@ static av_cold int init(AVFilterContext *ctx, const char *args)
tile->w, tile->h);
return AVERROR(EINVAL);
}
if (tile->nb_frames == 0) {
tile->nb_frames = tile->w * tile->h;
} else if (tile->nb_frames > tile->w * tile->h) {
av_log(ctx, AV_LOG_ERROR, "nb_frames must be less than or equal to %dx%d=%d\n",
tile->w, tile->h, tile->w * tile->h);
return AVERROR(EINVAL);
}
return 0;
}
@ -106,7 +118,7 @@ static int config_props(AVFilterLink *outlink)
outlink->h = tile->h * inlink->h + total_margin_h;
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
outlink->frame_rate = av_mul_q(inlink->frame_rate,
(AVRational){ 1, tile->w * tile->h });
(AVRational){ 1, tile->nb_frames });
ff_draw_init(&tile->draw, inlink->format, 0);
/* TODO make the color an option, or find an unified way of choosing it */
ff_draw_color(&tile->draw, &tile->blank, (uint8_t[]){ 0, 0, 0, -1 });
@ -188,7 +200,7 @@ static void end_last_frame(AVFilterContext *ctx)
outlink->out_buf = NULL;
ff_start_frame(outlink, out_buf);
while (tile->current < tile->w * tile->h)
while (tile->current < tile->nb_frames)
draw_blank_frame(ctx, out_buf);
ff_draw_slice(outlink, 0, out_buf->video->h, 1);
ff_end_frame(outlink);
@ -201,7 +213,7 @@ static int end_frame(AVFilterLink *inlink)
TileContext *tile = ctx->priv;
avfilter_unref_bufferp(&inlink->cur_buf);
if (++tile->current == tile->w * tile->h)
if (++tile->current == tile->nb_frames)
end_last_frame(ctx);
return 0;
}