Commit ee8e00b7 authored by Paul B Mahol's avatar Paul B Mahol

avfilter: add abitscope multimedia filter

Signed-off-by: 's avatarPaul B Mahol <onemda@gmail.com>
parent 95bde499
......@@ -17,6 +17,7 @@ version <next>:
- MIDI Sample Dump Standard demuxer
- readeia608 filter
- Sample Dump eXchange demuxer
- abitscope multimedia filter
version 3.2:
- libopenmpt demuxer
......
......@@ -15627,6 +15627,28 @@ tools.
Below is a description of the currently available multimedia filters.
@section abitscope
Convert input audio to a video output, displaying the audio bit scope.
The filter accepts the following options:
@table @option
@item rate, r
Set frame rate, expressed as number of frames per second. Default
value is "25".
@item size, s
Specify the video size for the output. For the syntax of this option, check the
@ref{video size syntax,,"Video size" section in the ffmpeg-utils manual,ffmpeg-utils}.
Default value is @code{1024x256}.
@item colors
Specify list of colors separated by space or by '|' which will be used to
draw channels. Unrecognized or missing colors will be replaced
by white color.
@end table
@section ahistogram
Convert input audio to a video output, displaying the volume histogram.
......
......@@ -333,6 +333,7 @@ OBJS-$(CONFIG_YUVTESTSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_NULLSINK_FILTER) += vsink_nullsink.o
# multimedia filters
OBJS-$(CONFIG_ABITSCOPE_FILTER) += avf_abitscope.o
OBJS-$(CONFIG_ADRAWGRAPH_FILTER) += f_drawgraph.o
OBJS-$(CONFIG_AHISTOGRAM_FILTER) += avf_ahistogram.o
OBJS-$(CONFIG_APHASEMETER_FILTER) += avf_aphasemeter.o
......
......@@ -348,6 +348,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(NULLSINK, nullsink, vsink);
/* multimedia filters */
REGISTER_FILTER(ABITSCOPE, abitscope, avf);
REGISTER_FILTER(ADRAWGRAPH, adrawgraph, avf);
REGISTER_FILTER(AHISTOGRAM, ahistogram, avf);
REGISTER_FILTER(APHASEMETER, aphasemeter, avf);
......
/*
* Copyright (c) 2016 Paul B Mahol
*
* 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
*/
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"
typedef struct AudioBitScopeContext {
const AVClass *class;
int w, h;
AVRational frame_rate;
char *colors;
int nb_channels;
int depth;
uint8_t *fg;
uint64_t counter[64];
} AudioBitScopeContext;
#define OFFSET(x) offsetof(AudioBitScopeContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption abitscope_options[] = {
{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="1024x256"}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="1024x256"}, 0, 0, FLAGS },
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(abitscope);
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *formats = NULL;
AVFilterChannelLayouts *layouts;
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16P, AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_NONE };
static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
int ret;
formats = ff_make_format_list(sample_fmts);
if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0)
return ret;
layouts = ff_all_channel_counts();
if (!layouts)
return AVERROR(ENOMEM);
if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0)
return ret;
formats = ff_all_samplerates();
if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
return ret;
formats = ff_make_format_list(pix_fmts);
if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
return ret;
return 0;
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AudioBitScopeContext *s = ctx->priv;
int ch, nb_samples;
char *colors, *saveptr = NULL;
nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
inlink->partial_buf_size =
inlink->min_samples =
inlink->max_samples = nb_samples;
s->nb_channels = inlink->channels;
s->depth = inlink->format == AV_SAMPLE_FMT_S16P ? 16 : 32;
s->fg = av_malloc_array(s->nb_channels, 4 * sizeof(*s->fg));
if (!s->fg)
return AVERROR(ENOMEM);
colors = av_strdup(s->colors);
if (!colors)
return AVERROR(ENOMEM);
for (ch = 0; ch < s->nb_channels; ch++) {
uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff };
char *color;
color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr);
if (color)
av_parse_color(fg, color, -1, ctx);
s->fg[4 * ch + 0] = fg[0];
s->fg[4 * ch + 1] = fg[1];
s->fg[4 * ch + 2] = fg[2];
s->fg[4 * ch + 3] = fg[3];
}
av_free(colors);
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AudioBitScopeContext *s = outlink->src->priv;
outlink->w = s->w;
outlink->h = s->h;
outlink->sample_aspect_ratio = (AVRational){1,1};
outlink->frame_rate = s->frame_rate;
return 0;
}
static void count_bits(AudioBitScopeContext *s, uint32_t sample, int max)
{
int i;
for (i = 0; i < max; i++) {
if (sample & (1 << i))
s->counter[i]++;
}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
AudioBitScopeContext *s = ctx->priv;
AVFrame *outpicref;
int ch, i, j, b;
outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!outpicref) {
av_frame_free(&insamples);
return AVERROR(ENOMEM);
}
for (i = 0; i < outlink->h; i++)
memset(outpicref->data[0] + i * outpicref->linesize[0], 0, outlink->w * 4);
outpicref->pts = insamples->pts;
switch (insamples->format) {
case AV_SAMPLE_FMT_S16P:
for (ch = 0; ch < inlink->channels; ch++) {
uint16_t *in = (uint16_t *)insamples->extended_data[ch];
int w = outpicref->width / inlink->channels;
int h = outpicref->height / 16;
uint32_t color = AV_RN32(&s->fg[4 * ch]);
memset(s->counter, 0, sizeof(s->counter));
for (i = 0; i < insamples->nb_samples; i++)
count_bits(s, in[i], 16);
for (b = 0; b < 16; b++) {
for (j = 1; j < h - 1; j++) {
uint8_t *dst = outpicref->data[0] + (b * h + j) * outpicref->linesize[0] + w * ch * 4;
int ww = (s->counter[16 - b - 1] / (float)insamples->nb_samples) * (w - 1);
for (i = 0; i < ww; i++) {
AV_WN32(&dst[i * 4], color);
}
}
}
}
break;
case AV_SAMPLE_FMT_S32P:
for (ch = 0; ch < inlink->channels; ch++) {
uint32_t *in = (uint32_t *)insamples->extended_data[ch];
int w = outpicref->width / inlink->channels;
int h = outpicref->height / 32;
uint32_t color = AV_RN32(&s->fg[4 * ch]);
memset(s->counter, 0, sizeof(s->counter));
for (i = 0; i < insamples->nb_samples; i++)
count_bits(s, in[i], 32);
for (b = 0; b < 32; b++) {
for (j = 1; j < h - 1; j++) {
uint8_t *dst = outpicref->data[0] + (b * h + j) * outpicref->linesize[0] + w * ch * 4;
int ww = (s->counter[32 - b - 1] / (float)insamples->nb_samples) * (w - 1);
for (i = 0; i < ww; i++) {
AV_WN32(&dst[i * 4], color);
}
}
}
}
break;
}
av_frame_free(&insamples);
return ff_filter_frame(outlink, outpicref);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
};
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
{ NULL }
};
AVFilter ff_avf_abitscope = {
.name = "abitscope",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to audio bit scope video output."),
.query_formats = query_formats,
.priv_size = sizeof(AudioBitScopeContext),
.inputs = inputs,
.outputs = outputs,
.priv_class = &abitscope_class,
};
......@@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 6
#define LIBAVFILTER_VERSION_MINOR 70
#define LIBAVFILTER_VERSION_MINOR 71
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
......
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