* Copyright (c) 2006 Julian Hall
* Copyright (c) 2002-2003 Brian J. Murrell
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or modify
+ * FFmpeg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
- * with Libav; if not, write to the Free Software Foundation, Inc.,
+ * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
*/
#include "avfilter.h"
+#include "internal.h"
+#include "formats.h"
+#include "internal.h"
#include "video.h"
typedef struct {
unsigned int bthresh; ///< black threshold
unsigned int frame; ///< frame number
unsigned int nblack; ///< number of black pixels counted so far
+ unsigned int last_keyframe; ///< frame number of the last received key-frame
} BlackFrameContext;
static int query_formats(AVFilterContext *ctx)
PIX_FMT_NONE
};
- avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
return 0;
}
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
BlackFrameContext *blackframe = ctx->priv;
blackframe->bthresh = 32;
blackframe->nblack = 0;
blackframe->frame = 0;
+ blackframe->last_keyframe = 0;
if (args)
sscanf(args, "%u:%u", &blackframe->bamount, &blackframe->bthresh);
- av_log(ctx, AV_LOG_INFO, "bamount:%u bthresh:%u\n",
+ av_log(ctx, AV_LOG_VERBOSE, "bamount:%u bthresh:%u\n",
blackframe->bamount, blackframe->bthresh);
if (blackframe->bamount > 100 || blackframe->bthresh > 255) {
return 0;
}
-static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
{
AVFilterContext *ctx = inlink->dst;
BlackFrameContext *blackframe = ctx->priv;
p += picref->linesize[0];
}
- avfilter_draw_slice(ctx->outputs[0], y, h, slice_dir);
+ return ff_draw_slice(ctx->outputs[0], y, h, slice_dir);
}
-static void end_frame(AVFilterLink *inlink)
+static int end_frame(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
BlackFrameContext *blackframe = ctx->priv;
AVFilterBufferRef *picref = inlink->cur_buf;
int pblack = 0;
+ if (picref->video->key_frame)
+ blackframe->last_keyframe = blackframe->frame;
+
pblack = blackframe->nblack * 100 / (inlink->w * inlink->h);
if (pblack >= blackframe->bamount)
- av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f\n",
+ av_log(ctx, AV_LOG_INFO, "frame:%u pblack:%u pos:%"PRId64" pts:%"PRId64" t:%f "
+ "type:%c last_keyframe:%d\n",
blackframe->frame, pblack, picref->pos, picref->pts,
- picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base));
+ picref->pts == AV_NOPTS_VALUE ? -1 : picref->pts * av_q2d(inlink->time_base),
+ av_get_picture_type_char(picref->video->pict_type), blackframe->last_keyframe);
blackframe->frame++;
blackframe->nblack = 0;
- avfilter_end_frame(inlink->dst->outputs[0]);
+ return ff_end_frame(inlink->dst->outputs[0]);
}
AVFilter avfilter_vf_blackframe = {
.query_formats = query_formats,
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .draw_slice = draw_slice,
- .get_video_buffer = ff_null_get_video_buffer,
- .start_frame = ff_null_start_frame,
- .end_frame = end_frame, },
- { .name = NULL}},
+ .inputs = (const AVFilterPad[]) {{ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .draw_slice = draw_slice,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .start_frame = ff_null_start_frame_keep_ref,
+ .end_frame = end_frame, },
+ { .name = NULL}},
- .outputs = (AVFilterPad[]) {{ .name = "default",
+ .outputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO },
{ .name = NULL}},
};