/*
- * copyright (c) 2007 Bobby Bingham
+ * Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavfilter/vf_slicify.c
+ * @file
* video slicing filter
*/
#include "avfilter.h"
+#include "internal.h"
+#include "video.h"
+#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
typedef struct {
int use_random_h; ///< enable the use of random slice height values
} SliceContext;
-static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
+static av_cold int init(AVFilterContext *ctx, const char *args)
{
SliceContext *slice = ctx->priv;
static int config_props(AVFilterLink *link)
{
SliceContext *slice = link->dst->priv;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
- slice->vshift = av_pix_fmt_descriptors[link->format].log2_chroma_h;
+ slice->vshift = desc->log2_chroma_h;
return 0;
}
-static AVFilterPicRef *get_video_buffer(AVFilterLink *link, int perms,
- int w, int h)
-{
- return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
-}
-
-static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
+static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
SliceContext *slice = link->dst->priv;
slice->h = FFMAX(8, slice->h & (-1 << slice->vshift));
av_log(link->dst, AV_LOG_DEBUG, "h:%d\n", slice->h);
+ link->cur_buf = NULL;
- avfilter_start_frame(link->dst->outputs[0], picref);
+ return ff_start_frame(link->dst->outputs[0], picref);
}
-static void end_frame(AVFilterLink *link)
-{
- avfilter_end_frame(link->dst->outputs[0]);
-}
-
-static void draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+static int draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
SliceContext *slice = link->dst->priv;
- int y2;
+ int y2, ret = 0;
if (slice_dir == 1) {
- for (y2 = y; y2 + slice->h <= y + h; y2 += slice->h)
- avfilter_draw_slice(link->dst->outputs[0], y2, slice->h, slice_dir);
+ for (y2 = y; y2 + slice->h <= y + h; y2 += slice->h) {
+ ret = ff_draw_slice(link->dst->outputs[0], y2, slice->h, slice_dir);
+ if (ret < 0)
+ return ret;
+ }
if (y2 < y + h)
- avfilter_draw_slice(link->dst->outputs[0], y2, y + h - y2, slice_dir);
+ return ff_draw_slice(link->dst->outputs[0], y2, y + h - y2, slice_dir);
} else if (slice_dir == -1) {
- for (y2 = y + h; y2 - slice->h >= y; y2 -= slice->h)
- avfilter_draw_slice(link->dst->outputs[0], y2 - slice->h, slice->h, slice_dir);
+ for (y2 = y + h; y2 - slice->h >= y; y2 -= slice->h) {
+ ret = ff_draw_slice(link->dst->outputs[0], y2 - slice->h, slice->h, slice_dir);
+ if (ret < 0)
+ return ret;
+ }
if (y2 > y)
- avfilter_draw_slice(link->dst->outputs[0], y, y2 - y, slice_dir);
+ return ff_draw_slice(link->dst->outputs[0], y, y2 - y, slice_dir);
}
+ return 0;
}
+static const AVFilterPad avfilter_vf_slicify_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .get_video_buffer = ff_null_get_video_buffer,
+ .start_frame = start_frame,
+ .draw_slice = draw_slice,
+ .config_props = config_props,
+ .end_frame = ff_null_end_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad avfilter_vf_slicify_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
AVFilter avfilter_vf_slicify = {
.name = "slicify",
- .description = "Pass the images of input video on to next video filter as multiple slices.",
+ .description = NULL_IF_CONFIG_SMALL("Pass the images of input video on to next video filter as multiple slices."),
.init = init,
.priv_size = sizeof(SliceContext),
- .inputs = (AVFilterPad[]) {{ .name = "default",
- .type = CODEC_TYPE_VIDEO,
- .get_video_buffer = get_video_buffer,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .config_props = config_props,
- .end_frame = end_frame, },
- { .name = NULL}},
- .outputs = (AVFilterPad[]) {{ .name = "default",
- .type = CODEC_TYPE_VIDEO, },
- { .name = NULL}},
+ .inputs = avfilter_vf_slicify_inputs,
+ .outputs = avfilter_vf_slicify_outputs,
};
projects / ffmpeg / blobdiff