mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2011 Stefano Sabatini
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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,
|
|
* 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
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* filter fow showing textual video frame information
|
|
*/
|
|
|
|
#include "libavutil/adler32.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avfilter.h"
|
|
|
|
typedef struct {
|
|
unsigned int frame;
|
|
} ShowInfoContext;
|
|
|
|
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
|
|
{
|
|
ShowInfoContext *showinfo = ctx->priv;
|
|
showinfo->frame = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void end_frame(AVFilterLink *inlink)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
ShowInfoContext *showinfo = ctx->priv;
|
|
AVFilterBufferRef *picref = inlink->cur_buf;
|
|
uint32_t plane_crc[4], crc = 0;
|
|
int plane;
|
|
|
|
for (plane = 0; plane < 4; plane++) {
|
|
size_t linesize = av_image_get_linesize(picref->format, picref->video->w, plane);
|
|
plane_crc[plane] = av_adler32_update(0 , picref->data[plane], linesize);
|
|
crc = av_adler32_update(crc, picref->data[plane], linesize);
|
|
}
|
|
|
|
av_log(ctx, AV_LOG_INFO,
|
|
"n:%d pts:%"PRId64" pts_time:%f pos:%"PRId64" "
|
|
"fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c "
|
|
"crc:%u plane_crc:[%u %u %u %u]\n",
|
|
showinfo->frame,
|
|
picref->pts, picref ->pts * av_q2d(inlink->time_base), picref->pos,
|
|
av_pix_fmt_descriptors[picref->format].name,
|
|
picref->video->pixel_aspect.num, picref->video->pixel_aspect.den,
|
|
picref->video->w, picref->video->h,
|
|
!picref->video->interlaced ? 'P' : /* Progressive */
|
|
picref->video->top_field_first ? 'T' : 'B', /* Top / Bottom */
|
|
picref->video->key_frame,
|
|
av_get_picture_type_char(picref->video->pict_type),
|
|
crc, plane_crc[0], plane_crc[1], plane_crc[2], plane_crc[3]);
|
|
|
|
showinfo->frame++;
|
|
avfilter_end_frame(inlink->dst->outputs[0]);
|
|
}
|
|
|
|
AVFilter avfilter_vf_showinfo = {
|
|
.name = "showinfo",
|
|
.description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."),
|
|
|
|
.priv_size = sizeof(ShowInfoContext),
|
|
.init = init,
|
|
|
|
.inputs = (AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.get_video_buffer = avfilter_null_get_video_buffer,
|
|
.start_frame = avfilter_null_start_frame,
|
|
.end_frame = end_frame,
|
|
.min_perms = AV_PERM_READ, },
|
|
{ .name = NULL}},
|
|
|
|
.outputs = (AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO },
|
|
{ .name = NULL}},
|
|
};
|