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FFmpeg/libavfilter/af_ashowinfo.c
Michael Niedermayer 87b9dc0982 Merge commit '565e4993c63f797e2d50ad2f1e8f62fdbe299666'
The commit has already been split and commited, this merge is just for metadata.
What has not been merged is the removial of some start/end_frame / draw_slice
related functions that are still in use. They can be removed once they are
unused.

* commit '565e4993c63f797e2d50ad2f1e8f62fdbe299666':
  lavfi: merge start_frame/draw_slice/end_frame

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-11-29 02:51:22 +01:00

134 lines
4.0 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 for showing textual audio frame information
*/
#include <inttypes.h>
#include <stddef.h>
#include "libavutil/adler32.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/timestamp.h"
#include "libavutil/samplefmt.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"
typedef struct AShowInfoContext {
/**
* Scratch space for individual plane checksums for planar audio
*/
uint32_t *plane_checksums;
/**
* Frame counter
*/
uint64_t frame;
} AShowInfoContext;
static void uninit(AVFilterContext *ctx)
{
AShowInfoContext *s = ctx->priv;
av_freep(&s->plane_checksums);
}
static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *buf)
{
AVFilterContext *ctx = inlink->dst;
AShowInfoContext *s = ctx->priv;
char chlayout_str[128];
uint32_t checksum = 0;
int channels = av_get_channel_layout_nb_channels(buf->audio->channel_layout);
int planar = av_sample_fmt_is_planar(buf->format);
int block_align = av_get_bytes_per_sample(buf->format) * (planar ? 1 : channels);
int data_size = buf->audio->nb_samples * block_align;
int planes = planar ? channels : 1;
int i;
void *tmp_ptr = av_realloc(s->plane_checksums, channels * sizeof(*s->plane_checksums));
if (!tmp_ptr)
return AVERROR(ENOMEM);
s->plane_checksums = tmp_ptr;
for (i = 0; i < planes; i++) {
uint8_t *data = buf->extended_data[i];
s->plane_checksums[i] = av_adler32_update(0, data, data_size);
checksum = i ? av_adler32_update(checksum, data, data_size) :
s->plane_checksums[0];
}
av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), -1,
buf->audio->channel_layout);
av_log(ctx, AV_LOG_INFO,
"n:%"PRIu64" pts:%s pts_time:%s pos:%"PRId64" "
"fmt:%s channels:%d chlayout:%s rate:%d nb_samples:%d "
"checksum:%08X ",
s->frame,
av_ts2str(buf->pts), av_ts2timestr(buf->pts, &inlink->time_base),
buf->pos,
av_get_sample_fmt_name(buf->format), buf->audio->channels, chlayout_str,
buf->audio->sample_rate, buf->audio->nb_samples,
checksum);
av_log(ctx, AV_LOG_INFO, "plane_checksums: [ ");
for (i = 0; i < planes; i++)
av_log(ctx, AV_LOG_INFO, "%08X ", s->plane_checksums[i]);
av_log(ctx, AV_LOG_INFO, "]\n");
s->frame++;
return ff_filter_frame(inlink->dst->outputs[0], buf);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer,
.filter_frame = filter_frame,
.min_perms = AV_PERM_READ,
},
{ NULL },
};
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
},
{ NULL },
};
AVFilter avfilter_af_ashowinfo = {
.name = "ashowinfo",
.description = NULL_IF_CONFIG_SMALL("Show textual information for each audio frame."),
.priv_size = sizeof(AShowInfoContext),
.uninit = uninit,
.inputs = inputs,
.outputs = outputs,
};