[FFmpeg-cvslog] lavfi: add showinfo filter
Stefano Sabatini
git at videolan.org
Mon Sep 12 21:02:32 CEST 2011
ffmpeg | branch: master | Stefano Sabatini <stefano.sabatini-lala at poste.it> | Sat Apr 23 20:55:34 2011 +0200| [ee42716b07073549cefabec466a33fad39ed5eb6] | committer: Anton Khirnov
lavfi: add showinfo filter
Signed-off-by: Anton Khirnov <anton at khirnov.net>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ee42716b07073549cefabec466a33fad39ed5eb6
---
Changelog | 1 +
doc/filters.texi | 59 +++++++++++++++++++++++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/avfilter.h | 2 +-
libavfilter/vf_showinfo.c | 98 +++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 161 insertions(+), 1 deletions(-)
diff --git a/Changelog b/Changelog
index 8e9ed38..79bc96e 100644
--- a/Changelog
+++ b/Changelog
@@ -43,6 +43,7 @@ easier to use. The changes are:
- XMV demuxer
- Windows Media Image decoder
- LATM muxer
+- showinfo filter
version 0.7:
diff --git a/doc/filters.texi b/doc/filters.texi
index a8076b2..d8d9062 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -1210,6 +1210,65 @@ settb=2*intb
settb=AVTB
@end example
+ at section showinfo
+
+Show a line containing various information for each input video frame.
+The input video is not modified.
+
+The shown line contains a sequence of key/value pairs of the form
+ at var{key}:@var{value}.
+
+A description of each shown parameter follows:
+
+ at table @option
+ at item n
+sequential number of the input frame, starting from 0
+
+ at item pts
+Presentation TimeStamp of the input frame, expressed as a number of
+time base units. The time base unit depends on the filter input pad.
+
+ at item pts_time
+Presentation TimeStamp of the input frame, expressed as a number of
+seconds
+
+ at item pos
+position of the frame in the input stream, -1 if this information in
+unavailable and/or meanigless (for example in case of synthetic video)
+
+ at item fmt
+pixel format name
+
+ at item sar
+sample aspect ratio of the input frame, expressed in the form
+ at var{num}/@var{den}
+
+ at item s
+size of the input frame, expressed in the form
+ at var{width}x at var{height}
+
+ at item i
+interlaced mode ("P" for "progressive", "T" for top field first, "B"
+for bottom field first)
+
+ at item iskey
+1 if the frame is a key frame, 0 otherwise
+
+ at item type
+picture type of the input frame ("I" for an I-frame, "P" for a
+P-frame, "B" for a B-frame, "?" for unknown type).
+Check also the documentation of the @code{AVPictureType} enum and of
+the @code{av_get_picture_type_char} function defined in
+ at file{libavutil/avutil.h}.
+
+ at item checksum
+Adler-32 checksum of all the planes of the input frame
+
+ at item plane_checksum
+Adler-32 checksum of each plane of the input frame, expressed in the form
+"[@var{c0} @var{c1} @var{c2} @var{c3}]"
+ at end table
+
@section slicify
Pass the images of input video on to next video filter as multiple
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 1a6fd9b..162ec94 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -44,6 +44,7 @@ OBJS-$(CONFIG_SETDAR_FILTER) += vf_aspect.o
OBJS-$(CONFIG_SETPTS_FILTER) += vf_setpts.o
OBJS-$(CONFIG_SETSAR_FILTER) += vf_aspect.o
OBJS-$(CONFIG_SETTB_FILTER) += vf_settb.o
+OBJS-$(CONFIG_SHOWINFO_FILTER) += vf_showinfo.o
OBJS-$(CONFIG_SLICIFY_FILTER) += vf_slicify.o
OBJS-$(CONFIG_TRANSPOSE_FILTER) += vf_transpose.o
OBJS-$(CONFIG_UNSHARP_FILTER) += vf_unsharp.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index e29b4f9..e1b9333 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -65,6 +65,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (SETPTS, setpts, vf);
REGISTER_FILTER (SETSAR, setsar, vf);
REGISTER_FILTER (SETTB, settb, vf);
+ REGISTER_FILTER (SHOWINFO, showinfo, vf);
REGISTER_FILTER (SLICIFY, slicify, vf);
REGISTER_FILTER (TRANSPOSE, transpose, vf);
REGISTER_FILTER (UNSHARP, unsharp, vf);
diff --git a/libavfilter/avfilter.h b/libavfilter/avfilter.h
index f8295e7..01af7b8 100644
--- a/libavfilter/avfilter.h
+++ b/libavfilter/avfilter.h
@@ -29,7 +29,7 @@
#include "libavutil/rational.h"
#define LIBAVFILTER_VERSION_MAJOR 2
-#define LIBAVFILTER_VERSION_MINOR 4
+#define LIBAVFILTER_VERSION_MINOR 5
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
new file mode 100644
index 0000000..aa2a7f1
--- /dev/null
+++ b/libavfilter/vf_showinfo.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2011 Stefano Sabatini
+ * This file is part of Libav.
+ *
+ * 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.
+ *
+ * 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 Libav; 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/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_checksum[4] = {0}, checksum = 0;
+ int i, plane, vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
+
+ for (plane = 0; picref->data[plane] && plane < 4; plane++) {
+ size_t linesize = av_image_get_linesize(picref->format, picref->video->w, plane);
+ uint8_t *data = picref->data[plane];
+ int h = plane == 1 || plane == 2 ? inlink->h >> vsub : inlink->h;
+
+ 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 += picref->linesize[plane];
+ }
+ }
+
+ 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 "
+ "checksum:%u plane_checksum:[%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),
+ checksum, plane_checksum[0], plane_checksum[1], plane_checksum[2], plane_checksum[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}},
+};
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