| /* |
| * 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 for showing textual video frame information |
| */ |
| |
| #include "libavutil/adler32.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/timestamp.h" |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| uint32_t plane_checksum[4] = {0}, checksum = 0; |
| int i, plane, vsub = desc->log2_chroma_h; |
| |
| for (plane = 0; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++) { |
| int64_t linesize = av_image_get_linesize(frame->format, frame->width, plane); |
| uint8_t *data = frame->data[plane]; |
| int h = plane == 1 || plane == 2 ? FF_CEIL_RSHIFT(inlink->h, vsub) : inlink->h; |
| |
| if (linesize < 0) |
| return linesize; |
| |
| for (i = 0; i < h; i++) { |
| plane_checksum[plane] = av_adler32_update(plane_checksum[plane], data, linesize); |
| checksum = av_adler32_update(checksum, data, linesize); |
| data += frame->linesize[plane]; |
| } |
| } |
| |
| av_log(ctx, AV_LOG_INFO, |
| "n:%"PRId64" pts:%s pts_time:%s pos:%"PRId64" " |
| "fmt:%s sar:%d/%d s:%dx%d i:%c iskey:%d type:%c " |
| "checksum:%08X plane_checksum:[%08X", |
| inlink->frame_count, |
| av_ts2str(frame->pts), av_ts2timestr(frame->pts, &inlink->time_base), av_frame_get_pkt_pos(frame), |
| desc->name, |
| frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den, |
| frame->width, frame->height, |
| !frame->interlaced_frame ? 'P' : /* Progressive */ |
| frame->top_field_first ? 'T' : 'B', /* Top / Bottom */ |
| frame->key_frame, |
| av_get_picture_type_char(frame->pict_type), |
| checksum, plane_checksum[0]); |
| |
| for (plane = 1; plane < 4 && frame->data[plane] && frame->linesize[plane]; plane++) |
| av_log(ctx, AV_LOG_INFO, " %08X", plane_checksum[plane]); |
| av_log(ctx, AV_LOG_INFO, "]\n"); |
| |
| return ff_filter_frame(inlink->dst->outputs[0], frame); |
| } |
| |
| static const AVFilterPad avfilter_vf_showinfo_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .get_video_buffer = ff_null_get_video_buffer, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avfilter_vf_showinfo_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO |
| }, |
| { NULL } |
| }; |
| |
| AVFilter avfilter_vf_showinfo = { |
| .name = "showinfo", |
| .description = NULL_IF_CONFIG_SMALL("Show textual information for each video frame."), |
| |
| .inputs = avfilter_vf_showinfo_inputs, |
| |
| .outputs = avfilter_vf_showinfo_outputs, |
| }; |