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FFmpeg/libavfilter/avf_abitscope.c

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/*
* 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/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "filters.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 mode;
int nb_channels;
int nb_samples;
int depth;
int current_vpos;
uint8_t *fg;
uint64_t counter[64];
AVFrame *outpicref;
} 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, INT_MAX, FLAGS },
{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, 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 },
{ "mode", "set output mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FLAGS, "mode" },
{ "m", "set output mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FLAGS, "mode" },
{ "bars", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, FLAGS, "mode" },
{ "trace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, FLAGS, "mode" },
{ 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_U8P, AV_SAMPLE_FMT_S64P,
AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_DBLP,
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->outcfg.formats)) < 0)
return ret;
layouts = ff_all_channel_counts();
if (!layouts)
return AVERROR(ENOMEM);
if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
return ret;
formats = ff_all_samplerates();
if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
return ret;
formats = ff_make_format_list(pix_fmts);
if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
return ret;
return 0;
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AudioBitScopeContext *s = ctx->priv;
int ch;
char *colors, *saveptr = NULL;
s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
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;
}
#define BARS(type, depth, one) \
for (int ch = 0; ch < inlink->channels; ch++) { \
const type *in = (const type *)insamples->extended_data[ch]; \
const int w = outpicref->width / inlink->channels; \
const int h = outpicref->height / depth; \
const uint32_t color = AV_RN32(&s->fg[4 * ch]); \
\
memset(s->counter, 0, sizeof(s->counter)); \
for (int i = 0; i < insamples->nb_samples; i++) { \
for (int j = 0; j < depth; j++) { \
if (in[i] & (one << j)) \
s->counter[j]++; \
} \
} \
\
for (int b = 0; b < depth; b++) { \
for (int j = 1; j < h - 1; j++) { \
uint8_t *dst = outpicref->data[0] + (b * h + j) * outpicref->linesize[0] + w * ch * 4; \
const int ww = (s->counter[depth - b - 1] / (float)insamples->nb_samples) * (w - 1); \
\
for (int i = 0; i < ww; i++) { \
AV_WN32(&dst[i * 4], color); \
} \
} \
} \
}
#define TRACE(type, depth, one) \
for (int ch = 0; ch < inlink->channels; ch++) { \
const int w = outpicref->width / inlink->channels; \
const type *in = (const type *)insamples->extended_data[ch]; \
const int wb = w / depth; \
int wv; \
\
memset(s->counter, 0, sizeof(s->counter)); \
for (int i = 0; i < insamples->nb_samples; i++) { \
for (int j = 0; j < depth; j++) { \
if (in[i] & (one << j)) \
s->counter[j]++; \
} \
} \
\
for (int b = 0; b < depth; b++) { \
uint8_t colors[4]; \
uint32_t color; \
uint8_t *dst = outpicref->data[0] + w * ch * 4 + wb * b * 4 + \
s->current_vpos * outpicref->linesize[0]; \
wv = (s->counter[depth - b - 1] * 255) / insamples->nb_samples; \
colors[0] = (wv * s->fg[ch * 4 + 0] + 127) / 255; \
colors[1] = (wv * s->fg[ch * 4 + 1] + 127) / 255; \
colors[2] = (wv * s->fg[ch * 4 + 2] + 127) / 255; \
colors[3] = (wv * s->fg[ch * 4 + 3] + 127) / 255; \
color = AV_RN32(colors); \
\
for (int x = 0; x < wb; x++) \
AV_WN32(&dst[x * 4], color); \
} \
}
static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
AudioBitScopeContext *s = ctx->priv;
AVFrame *outpicref;
if (s->mode == 0 || !s->outpicref) {
outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!outpicref) {
av_frame_free(&insamples);
return AVERROR(ENOMEM);
}
for (int i = 0; i < outlink->h; i++)
memset(outpicref->data[0] + i * outpicref->linesize[0], 0, outlink->w * 4);
if (!s->outpicref && s->mode == 1)
s->outpicref = outpicref;
}
if (s->mode == 1) {
av_frame_make_writable(s->outpicref);
outpicref = av_frame_clone(s->outpicref);
if (!outpicref)
return AVERROR(ENOMEM);
}
outpicref->pts = insamples->pts;
outpicref->sample_aspect_ratio = (AVRational){1,1};
switch (insamples->format) {
case AV_SAMPLE_FMT_U8P:
if (s->mode == 0) { BARS(uint8_t, 8, 1) } else { TRACE(uint8_t, 8, 1) }
break;
case AV_SAMPLE_FMT_S16P:
if (s->mode == 0) { BARS(uint16_t, 16, 1) } else { TRACE(uint16_t, 16, 1) }
break;
case AV_SAMPLE_FMT_FLTP:
case AV_SAMPLE_FMT_S32P:
if (s->mode == 0) { BARS(uint32_t, 32, 1U) } else { TRACE(uint32_t, 32, 1U) }
break;
case AV_SAMPLE_FMT_DBLP:
case AV_SAMPLE_FMT_S64P:
if (s->mode == 0) { BARS(uint64_t, 64, 1ULL) } else { TRACE(uint64_t, 64, 1ULL) }
break;
}
s->current_vpos++;
if (s->current_vpos >= outlink->h)
s->current_vpos = 0;
av_frame_free(&insamples);
return ff_filter_frame(outlink, outpicref);
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
AudioBitScopeContext *s = ctx->priv;
AVFrame *in;
int ret;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
if (ret < 0)
return ret;
if (ret > 0)
return filter_frame(inlink, in);
FF_FILTER_FORWARD_STATUS(inlink, outlink);
FF_FILTER_FORWARD_WANTED(outlink, inlink);
return FFERROR_NOT_READY;
}
static av_cold void uninit(AVFilterContext *ctx)
{
AudioBitScopeContext *s = ctx->priv;
av_frame_free(&s->outpicref);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
},
};
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
const AVFilter ff_avf_abitscope = {
.name = "abitscope",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to audio bit scope video output."),
.priv_size = sizeof(AudioBitScopeContext),
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(outputs),
FILTER_QUERY_FUNC(query_formats),
.uninit = uninit,
.activate = activate,
.priv_class = &abitscope_class,
};
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