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FFmpeg/libavfilter/avf_showcqt.c
Andreas Rheinhardt b4f5201967 avfilter: Replace query_formats callback with union of list and callback 
If one looks at the many query_formats callbacks in existence,
one will immediately recognize that there is one type of default
callback for video and a slightly different default callback for
audio: It is "return ff_set_common_formats_from_list(ctx, pix_fmts);"
for video with a filter-specific pix_fmts list. For audio, it is
the same with a filter-specific sample_fmts list together with
ff_set_common_all_samplerates() and ff_set_common_all_channel_counts().

This commit allows to remove the boilerplate query_formats callbacks
by replacing said callback with a union consisting the old callback
and pointers for pixel and sample format arrays. For the not uncommon
case in which these lists only contain a single entry (besides the
sentinel) enum AVPixelFormat and enum AVSampleFormat fields are also
added to the union to store them directly in the AVFilter,
thereby avoiding a relocation.

The state of said union will be contained in a new, dedicated AVFilter
field (the nb_inputs and nb_outputs fields have been shrunk to uint8_t
in order to create a hole for this new field; this is no problem, as
the maximum of all the nb_inputs is four; for nb_outputs it is only
two).

The state's default value coincides with the earlier default of
query_formats being unset, namely that the filter accepts all formats
(and also sample rates and channel counts/layouts for audio)
provided that these properties agree coincide for all inputs and
outputs.

By using different union members for audio and video filters
the type-unsafety of using the same functions for audio and video
lists will furthermore be more confined to formats.c than before.

When the new fields are used, they will also avoid allocations:
Currently something nearly equivalent to ff_default_query_formats()
is called after every successful call to a query_formats callback;
yet in the common case that the newly allocated AVFilterFormats
are not used at all (namely if there are no free links) these newly
allocated AVFilterFormats are freed again without ever being used.
Filters no longer using the callback will not exhibit this any more.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2021-10-05 17:48:25 +02:00

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/*
* Copyright (c) 2014-2015 Muhammad Faiz <mfcc64@gmail.com>
*
* 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 "config.h"
#include "libavutil/tx.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "libavutil/xga_font_data.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "avfilter.h"
#include "internal.h"
#include "lavfutils.h"
#include "lswsutils.h"
#if CONFIG_LIBFREETYPE
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#if CONFIG_LIBFONTCONFIG
#include <fontconfig/fontconfig.h>
#endif
#include "avf_showcqt.h"
#define BASEFREQ 20.01523126408007475
#define ENDFREQ 20495.59681441799654
#define TLENGTH "384*tc/(384+tc*f)"
#define TLENGTH_MIN 0.001
#define VOLUME_MAX 100.0
#define FONTCOLOR "st(0, (midi(f)-59.5)/12);" \
"st(1, if(between(ld(0),0,1), 0.5-0.5*cos(2*PI*ld(0)), 0));" \
"r(1-ld(1)) + b(ld(1))"
#define CSCHEME "1|0.5|0|0|0.5|1"
#define PTS_STEP 10
#define PTS_TOLERANCE 1
#define OFFSET(x) offsetof(ShowCQTContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption showcqt_options[] = {
{ "size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, { .str = "1920x1080" }, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, { .str = "1920x1080" }, 0, 0, FLAGS },
{ "fps", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 1, 1000, FLAGS },
{ "bar_h", "set bargraph height", OFFSET(bar_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ "axis_h", "set axis height", OFFSET(axis_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ "sono_h", "set sonogram height", OFFSET(sono_h), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ "fullhd", "set fullhd size", OFFSET(fullhd), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "sono_v", "set sonogram volume", OFFSET(sono_v), AV_OPT_TYPE_STRING, { .str = "16" }, 0, 0, FLAGS },
{ "volume", "set sonogram volume", OFFSET(sono_v), AV_OPT_TYPE_STRING, { .str = "16" }, 0, 0, FLAGS },
{ "bar_v", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, 0, 0, FLAGS },
{ "volume2", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, 0, 0, FLAGS },
{ "sono_g", "set sonogram gamma", OFFSET(sono_g), AV_OPT_TYPE_FLOAT, { .dbl = 3.0 }, 1.0, 7.0, FLAGS },
{ "gamma", "set sonogram gamma", OFFSET(sono_g), AV_OPT_TYPE_FLOAT, { .dbl = 3.0 }, 1.0, 7.0, FLAGS },
{ "bar_g", "set bargraph gamma", OFFSET(bar_g), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 1.0, 7.0, FLAGS },
{ "gamma2", "set bargraph gamma", OFFSET(bar_g), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 1.0, 7.0, FLAGS },
{ "bar_t", "set bar transparency", OFFSET(bar_t), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 0.0, 1.0, FLAGS },
{ "timeclamp", "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 }, 0.002, 1.0, FLAGS },
{ "tc", "set timeclamp", OFFSET(timeclamp), AV_OPT_TYPE_DOUBLE, { .dbl = 0.17 }, 0.002, 1.0, FLAGS },
{ "attack", "set attack time", OFFSET(attack), AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, 0.0, 1.0, FLAGS },
{ "basefreq", "set base frequency", OFFSET(basefreq), AV_OPT_TYPE_DOUBLE, { .dbl = BASEFREQ }, 10.0, 100000.0, FLAGS },
{ "endfreq", "set end frequency", OFFSET(endfreq), AV_OPT_TYPE_DOUBLE, { .dbl = ENDFREQ }, 10.0, 100000.0, FLAGS },
{ "coeffclamp", "set coeffclamp", OFFSET(coeffclamp), AV_OPT_TYPE_FLOAT, { .dbl = 1.0 }, 0.1, 10.0, FLAGS },
{ "tlength", "set tlength", OFFSET(tlength), AV_OPT_TYPE_STRING, { .str = TLENGTH }, 0, 0, FLAGS },
{ "count", "set transform count", OFFSET(count), AV_OPT_TYPE_INT, { .i64 = 6 }, 1, 30, FLAGS },
{ "fcount", "set frequency count", OFFSET(fcount), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 10, FLAGS },
{ "fontfile", "set axis font file", OFFSET(fontfile), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
{ "font", "set axis font", OFFSET(font), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
{ "fontcolor", "set font color", OFFSET(fontcolor), AV_OPT_TYPE_STRING, { .str = FONTCOLOR }, 0, 0, FLAGS },
{ "axisfile", "set axis image", OFFSET(axisfile), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, FLAGS },
{ "axis", "draw axis", OFFSET(axis), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "text", "draw axis", OFFSET(axis), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "csp", "set color space", OFFSET(csp), AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, INT_MAX, FLAGS, "csp" },
{ "unspecified", "unspecified", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, 0, FLAGS, "csp" },
{ "bt709", "bt709", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT709 }, 0, 0, FLAGS, "csp" },
{ "fcc", "fcc", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_FCC }, 0, 0, FLAGS, "csp" },
{ "bt470bg", "bt470bg", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "csp" },
{ "smpte170m", "smpte170m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE170M }, 0, 0, FLAGS, "csp" },
{ "smpte240m", "smpte240m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE240M }, 0, 0, FLAGS, "csp" },
{ "bt2020ncl", "bt2020ncl", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT2020_NCL }, 0, 0, FLAGS, "csp" },
{ "cscheme", "set color scheme", OFFSET(cscheme), AV_OPT_TYPE_STRING, { .str = CSCHEME }, 0, 0, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(showcqt);
static void common_uninit(ShowCQTContext *s)
{
int k;
int level = AV_LOG_DEBUG;
int64_t plot_time;
if (s->fft_time)
av_log(s->ctx, level, "fft_time = %16.3f s.\n", s->fft_time * 1e-6);
if (s->cqt_time)
av_log(s->ctx, level, "cqt_time = %16.3f s.\n", s->cqt_time * 1e-6);
if (s->process_cqt_time)
av_log(s->ctx, level, "process_cqt_time = %16.3f s.\n", s->process_cqt_time * 1e-6);
if (s->update_sono_time)
av_log(s->ctx, level, "update_sono_time = %16.3f s.\n", s->update_sono_time * 1e-6);
if (s->alloc_time)
av_log(s->ctx, level, "alloc_time = %16.3f s.\n", s->alloc_time * 1e-6);
if (s->bar_time)
av_log(s->ctx, level, "bar_time = %16.3f s.\n", s->bar_time * 1e-6);
if (s->axis_time)
av_log(s->ctx, level, "axis_time = %16.3f s.\n", s->axis_time * 1e-6);
if (s->sono_time)
av_log(s->ctx, level, "sono_time = %16.3f s.\n", s->sono_time * 1e-6);
plot_time = s->fft_time + s->cqt_time + s->process_cqt_time + s->update_sono_time
+ s->alloc_time + s->bar_time + s->axis_time + s->sono_time;
if (plot_time)
av_log(s->ctx, level, "plot_time = %16.3f s.\n", plot_time * 1e-6);
s->fft_time = s->cqt_time = s->process_cqt_time = s->update_sono_time
= s->alloc_time = s->bar_time = s->axis_time = s->sono_time = 0;
/* axis_frame may be non reference counted frame */
if (s->axis_frame && !s->axis_frame->buf[0]) {
av_freep(s->axis_frame->data);
for (k = 0; k < 4; k++)
s->axis_frame->data[k] = NULL;
}
av_frame_free(&s->axis_frame);
av_frame_free(&s->sono_frame);
av_tx_uninit(&s->fft_ctx);
if (s->coeffs)
for (k = 0; k < s->cqt_len; k++)
av_freep(&s->coeffs[k].val);
av_freep(&s->coeffs);
av_freep(&s->fft_data);
av_freep(&s->fft_input);
av_freep(&s->fft_result);
av_freep(&s->cqt_result);
av_freep(&s->attack_data);
av_freep(&s->c_buf);
av_freep(&s->h_buf);
av_freep(&s->rcp_h_buf);
av_freep(&s->freq);
av_freep(&s->sono_v_buf);
av_freep(&s->bar_v_buf);
}
static double *create_freq_table(double base, double end, int n)
{
double log_base, log_end;
double rcp_n = 1.0 / n;
double *freq;
int x;
freq = av_malloc_array(n, sizeof(*freq));
if (!freq)
return NULL;
log_base = log(base);
log_end = log(end);
for (x = 0; x < n; x++) {
double log_freq = log_base + (x + 0.5) * (log_end - log_base) * rcp_n;
freq[x] = exp(log_freq);
}
return freq;
}
static double clip_with_log(void *log_ctx, const char *name,
double val, double min, double max,
double nan_replace, int idx)
{
int level = AV_LOG_WARNING;
if (isnan(val)) {
av_log(log_ctx, level, "[%d] %s is nan, setting it to %g.\n",
idx, name, nan_replace);
val = nan_replace;
} else if (val < min) {
av_log(log_ctx, level, "[%d] %s is too low (%g), setting it to %g.\n",
idx, name, val, min);
val = min;
} else if (val > max) {
av_log(log_ctx, level, "[%d] %s it too high (%g), setting it to %g.\n",
idx, name, val, max);
val = max;
}
return val;
}
static double a_weighting(void *p, double f)
{
double ret = 12200.0*12200.0 * (f*f*f*f);
ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0) *
sqrt((f*f + 107.7*107.7) * (f*f + 737.9*737.9));
return ret;
}
static double b_weighting(void *p, double f)
{
double ret = 12200.0*12200.0 * (f*f*f);
ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0) * sqrt(f*f + 158.5*158.5);
return ret;
}
static double c_weighting(void *p, double f)
{
double ret = 12200.0*12200.0 * (f*f);
ret /= (f*f + 20.6*20.6) * (f*f + 12200.0*12200.0);
return ret;
}
static int init_volume(ShowCQTContext *s)
{
const char *func_names[] = { "a_weighting", "b_weighting", "c_weighting", NULL };
const char *sono_names[] = { "timeclamp", "tc", "frequency", "freq", "f", "bar_v", NULL };
const char *bar_names[] = { "timeclamp", "tc", "frequency", "freq", "f", "sono_v", NULL };
double (*funcs[])(void *, double) = { a_weighting, b_weighting, c_weighting };
AVExpr *sono = NULL, *bar = NULL;
int x, ret = AVERROR(ENOMEM);
s->sono_v_buf = av_malloc_array(s->cqt_len, sizeof(*s->sono_v_buf));
s->bar_v_buf = av_malloc_array(s->cqt_len, sizeof(*s->bar_v_buf));
if (!s->sono_v_buf || !s->bar_v_buf)
goto error;
if ((ret = av_expr_parse(&sono, s->sono_v, sono_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0)
goto error;
if ((ret = av_expr_parse(&bar, s->bar_v, bar_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0)
goto error;
for (x = 0; x < s->cqt_len; x++) {
double vars[] = { s->timeclamp, s->timeclamp, s->freq[x], s->freq[x], s->freq[x], 0.0 };
double vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
vars[5] = vol;
vol = clip_with_log(s->ctx, "bar_v", av_expr_eval(bar, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
s->bar_v_buf[x] = vol * vol;
vars[5] = vol;
vol = clip_with_log(s->ctx, "sono_v", av_expr_eval(sono, vars, NULL), 0.0, VOLUME_MAX, 0.0, x);
s->sono_v_buf[x] = vol * vol;
}
av_expr_free(sono);
av_expr_free(bar);
return 0;
error:
av_freep(&s->sono_v_buf);
av_freep(&s->bar_v_buf);
av_expr_free(sono);
av_expr_free(bar);
return ret;
}
static void cqt_calc(AVComplexFloat *dst, const AVComplexFloat *src, const Coeffs *coeffs,
int len, int fft_len)
{
int k, x, i, j;
for (k = 0; k < len; k++) {
AVComplexFloat l, r, a = {0,0}, b = {0,0};
for (x = 0; x < coeffs[k].len; x++) {
float u = coeffs[k].val[x];
i = coeffs[k].start + x;
j = fft_len - i;
a.re += u * src[i].re;
a.im += u * src[i].im;
b.re += u * src[j].re;
b.im += u * src[j].im;
}
/* separate left and right, (and multiply by 2.0) */
l.re = a.re + b.re;
l.im = a.im - b.im;
r.re = b.im + a.im;
r.im = b.re - a.re;
dst[k].re = l.re * l.re + l.im * l.im;
dst[k].im = r.re * r.re + r.im * r.im;
}
}
static int init_cqt(ShowCQTContext *s)
{
const char *var_names[] = { "timeclamp", "tc", "frequency", "freq", "f", NULL };
AVExpr *expr = NULL;
int rate = s->ctx->inputs[0]->sample_rate;
int nb_cqt_coeffs = 0;
int k, x, ret;
if ((ret = av_expr_parse(&expr, s->tlength, var_names, NULL, NULL, NULL, NULL, 0, s->ctx)) < 0)
goto error;
ret = AVERROR(ENOMEM);
if (!(s->coeffs = av_calloc(s->cqt_len, sizeof(*s->coeffs))))
goto error;
for (k = 0; k < s->cqt_len; k++) {
double vars[] = { s->timeclamp, s->timeclamp, s->freq[k], s->freq[k], s->freq[k] };
double flen, center, tlength;
int start, end, m = k;
if (s->freq[k] > 0.5 * rate)
continue;
tlength = clip_with_log(s->ctx, "tlength", av_expr_eval(expr, vars, NULL),
TLENGTH_MIN, s->timeclamp, s->timeclamp, k);
flen = 8.0 * s->fft_len / (tlength * rate);
center = s->freq[k] * s->fft_len / rate;
start = FFMAX(0, ceil(center - 0.5 * flen));
end = FFMIN(s->fft_len, floor(center + 0.5 * flen));
s->coeffs[m].start = start & ~(s->cqt_align - 1);
s->coeffs[m].len = (end | (s->cqt_align - 1)) + 1 - s->coeffs[m].start;
nb_cqt_coeffs += s->coeffs[m].len;
if (!(s->coeffs[m].val = av_calloc(s->coeffs[m].len, sizeof(*s->coeffs[m].val))))
goto error;
for (x = start; x <= end; x++) {
int sign = (x & 1) ? (-1) : 1;
double y = 2.0 * M_PI * (x - center) * (1.0 / flen);
/* nuttall window */
double w = 0.355768 + 0.487396 * cos(y) + 0.144232 * cos(2*y) + 0.012604 * cos(3*y);
w *= sign * (1.0 / s->fft_len);
s->coeffs[m].val[x - s->coeffs[m].start] = w;
}
if (s->permute_coeffs)
s->permute_coeffs(s->coeffs[m].val, s->coeffs[m].len);
}
av_expr_free(expr);
av_log(s->ctx, AV_LOG_INFO, "nb_cqt_coeffs = %d.\n", nb_cqt_coeffs);
return 0;
error:
av_expr_free(expr);
if (s->coeffs)
for (k = 0; k < s->cqt_len; k++)
av_freep(&s->coeffs[k].val);
av_freep(&s->coeffs);
return ret;
}
static AVFrame *alloc_frame_empty(enum AVPixelFormat format, int w, int h)
{
AVFrame *out;
out = av_frame_alloc();
if (!out)
return NULL;
out->format = format;
out->width = w;
out->height = h;
if (av_frame_get_buffer(out, 0) < 0) {
av_frame_free(&out);
return NULL;
}
if (format == AV_PIX_FMT_RGB24 || format == AV_PIX_FMT_RGBA) {
memset(out->data[0], 0, out->linesize[0] * h);
} else {
int hh = (format == AV_PIX_FMT_YUV420P || format == AV_PIX_FMT_YUVA420P) ? h / 2 : h;
memset(out->data[0], 16, out->linesize[0] * h);
memset(out->data[1], 128, out->linesize[1] * hh);
memset(out->data[2], 128, out->linesize[2] * hh);
if (out->data[3])
memset(out->data[3], 0, out->linesize[3] * h);
}
return out;
}
static enum AVPixelFormat convert_axis_pixel_format(enum AVPixelFormat format)
{
switch (format) {
case AV_PIX_FMT_RGB24: format = AV_PIX_FMT_RGBA; break;
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV420P: format = AV_PIX_FMT_YUVA444P; break;
}
return format;
}
static int init_axis_empty(ShowCQTContext *s)
{
if (!(s->axis_frame = alloc_frame_empty(convert_axis_pixel_format(s->format), s->width, s->axis_h)))
return AVERROR(ENOMEM);
return 0;
}
static int init_axis_from_file(ShowCQTContext *s)
{
uint8_t *tmp_data[4] = { NULL };
int tmp_linesize[4];
enum AVPixelFormat tmp_format;
int tmp_w, tmp_h, ret;
if ((ret = ff_load_image(tmp_data, tmp_linesize, &tmp_w, &tmp_h, &tmp_format,
s->axisfile, s->ctx)) < 0)
goto error;
ret = AVERROR(ENOMEM);
if (!(s->axis_frame = av_frame_alloc()))
goto error;
if ((ret = ff_scale_image(s->axis_frame->data, s->axis_frame->linesize, s->width, s->axis_h,
convert_axis_pixel_format(s->format), tmp_data, tmp_linesize, tmp_w, tmp_h,
tmp_format, s->ctx)) < 0)
goto error;
s->axis_frame->width = s->width;
s->axis_frame->height = s->axis_h;
s->axis_frame->format = convert_axis_pixel_format(s->format);
av_freep(tmp_data);
return 0;
error:
av_frame_free(&s->axis_frame);
av_freep(tmp_data);
return ret;
}
static double midi(void *p, double f)
{
return log2(f/440.0) * 12.0 + 69.0;
}
static double r_func(void *p, double x)
{
x = av_clipd(x, 0.0, 1.0);
return lrint(x*255.0) << 16;
}
static double g_func(void *p, double x)
{
x = av_clipd(x, 0.0, 1.0);
return lrint(x*255.0) << 8;
}
static double b_func(void *p, double x)
{
x = av_clipd(x, 0.0, 1.0);
return lrint(x*255.0);
}
static int init_axis_color(ShowCQTContext *s, AVFrame *tmp, int half)
{
const char *var_names[] = { "timeclamp", "tc", "frequency", "freq", "f", NULL };
const char *func_names[] = { "midi", "r", "g", "b", NULL };
double (*funcs[])(void *, double) = { midi, r_func, g_func, b_func };
AVExpr *expr = NULL;
double *freq = NULL;
int x, xs, y, ret;
int width = half ? 1920/2 : 1920, height = half ? 16 : 32;
int step = half ? 2 : 1;
if (s->basefreq != (double) BASEFREQ || s->endfreq != (double) ENDFREQ) {
av_log(s->ctx, AV_LOG_WARNING, "font axis rendering is not implemented in non-default frequency range,"
" please use axisfile option instead.\n");
return AVERROR(EINVAL);
}
if (s->cqt_len == 1920)
freq = s->freq;
else if (!(freq = create_freq_table(s->basefreq, s->endfreq, 1920)))
return AVERROR(ENOMEM);
if ((ret = av_expr_parse(&expr, s->fontcolor, var_names, func_names, funcs, NULL, NULL, 0, s->ctx)) < 0) {
if (freq != s->freq)
av_freep(&freq);
return ret;
}
for (x = 0, xs = 0; x < width; x++, xs += step) {
double vars[] = { s->timeclamp, s->timeclamp, freq[xs], freq[xs], freq[xs] };
int color = (int) av_expr_eval(expr, vars, NULL);
uint8_t r = (color >> 16) & 0xFF, g = (color >> 8) & 0xFF, b = color & 0xFF;
uint8_t *data = tmp->data[0];
int linesize = tmp->linesize[0];
for (y = 0; y < height; y++) {
data[linesize * y + 4 * x] = r;
data[linesize * y + 4 * x + 1] = g;
data[linesize * y + 4 * x + 2] = b;
}
}
av_expr_free(expr);
if (freq != s->freq)
av_freep(&freq);
return 0;
}
static int render_freetype(ShowCQTContext *s, AVFrame *tmp, char *fontfile)
{
#if CONFIG_LIBFREETYPE
const char *str = "EF G A BC D ";
uint8_t *data = tmp->data[0];
int linesize = tmp->linesize[0];
FT_Library lib = NULL;
FT_Face face = NULL;
int font_width = 16, font_height = 32;
int font_repeat = font_width * 12;
int linear_hori_advance = font_width * 65536;
int non_monospace_warning = 0;
int x;
if (!fontfile)
return AVERROR(EINVAL);
if (FT_Init_FreeType(&lib))
goto fail;
if (FT_New_Face(lib, fontfile, 0, &face))
goto fail;
if (FT_Set_Char_Size(face, 16*64, 0, 0, 0))
goto fail;
if (FT_Load_Char(face, 'A', FT_LOAD_RENDER))
goto fail;
if (FT_Set_Char_Size(face, 16*64 * linear_hori_advance / face->glyph->linearHoriAdvance, 0, 0, 0))
goto fail;
for (x = 0; x < 12; x++) {
int sx, sy, rx, bx, by, dx, dy;
if (str[x] == ' ')
continue;
if (FT_Load_Char(face, str[x], FT_LOAD_RENDER))
goto fail;
if (face->glyph->advance.x != font_width*64 && !non_monospace_warning) {
av_log(s->ctx, AV_LOG_WARNING, "font is not monospace.\n");
non_monospace_warning = 1;
}
sy = font_height - 8 - face->glyph->bitmap_top;
for (rx = 0; rx < 10; rx++) {
sx = rx * font_repeat + x * font_width + face->glyph->bitmap_left;
for (by = 0; by < face->glyph->bitmap.rows; by++) {
dy = by + sy;
if (dy < 0)
continue;
if (dy >= font_height)
break;
for (bx = 0; bx < face->glyph->bitmap.width; bx++) {
dx = bx + sx;
if (dx < 0)
continue;
if (dx >= 1920)
break;
data[dy*linesize+4*dx+3] = face->glyph->bitmap.buffer[by*face->glyph->bitmap.width+bx];
}
}
}
}
FT_Done_Face(face);
FT_Done_FreeType(lib);
return 0;
fail:
av_log(s->ctx, AV_LOG_WARNING, "error while loading freetype font.\n");
FT_Done_Face(face);
FT_Done_FreeType(lib);
return AVERROR(EINVAL);
#else
if (fontfile)
av_log(s->ctx, AV_LOG_WARNING, "freetype is not available, ignoring fontfile option.\n");
return AVERROR(EINVAL);
#endif
}
static int render_fontconfig(ShowCQTContext *s, AVFrame *tmp, char* font)
{
#if CONFIG_LIBFONTCONFIG
FcConfig *fontconfig;
FcPattern *pat, *best;
FcResult result = FcResultMatch;
char *filename;
int i, ret;
if (!font)
return AVERROR(EINVAL);
for (i = 0; font[i]; i++) {
if (font[i] == '|')
font[i] = ':';
}
if (!(fontconfig = FcInitLoadConfigAndFonts())) {
av_log(s->ctx, AV_LOG_ERROR, "impossible to init fontconfig.\n");
return AVERROR_UNKNOWN;
}
if (!(pat = FcNameParse((uint8_t *)font))) {
av_log(s->ctx, AV_LOG_ERROR, "could not parse fontconfig pat.\n");
FcConfigDestroy(fontconfig);
return AVERROR(EINVAL);
}
FcDefaultSubstitute(pat);
if (!FcConfigSubstitute(fontconfig, pat, FcMatchPattern)) {
av_log(s->ctx, AV_LOG_ERROR, "could not substitue fontconfig options.\n");
FcPatternDestroy(pat);
FcConfigDestroy(fontconfig);
return AVERROR(ENOMEM);
}
best = FcFontMatch(fontconfig, pat, &result);
FcPatternDestroy(pat);
ret = AVERROR(EINVAL);
if (!best || result != FcResultMatch) {
av_log(s->ctx, AV_LOG_ERROR, "cannot find a valid font for %s.\n", font);
goto fail;
}
if (FcPatternGetString(best, FC_FILE, 0, (FcChar8 **)&filename) != FcResultMatch) {
av_log(s->ctx, AV_LOG_ERROR, "no file path for %s\n", font);
goto fail;
}
ret = render_freetype(s, tmp, filename);
fail:
FcPatternDestroy(best);
FcConfigDestroy(fontconfig);
return ret;
#else
if (font)
av_log(s->ctx, AV_LOG_WARNING, "fontconfig is not available, ignoring font option.\n");
return AVERROR(EINVAL);
#endif
}
static int render_default_font(AVFrame *tmp)
{
const char *str = "EF G A BC D ";
int x, u, v, mask;
uint8_t *data = tmp->data[0];
int linesize = tmp->linesize[0];
int width = 1920/2, height = 16;
for (x = 0; x < width; x += width/10) {
uint8_t *startptr = data + 4 * x;
for (u = 0; u < 12; u++) {
for (v = 0; v < height; v++) {
uint8_t *p = startptr + v * linesize + height/2 * 4 * u;
for (mask = 0x80; mask; mask >>= 1, p += 4) {
if (mask & avpriv_vga16_font[str[u] * 16 + v])
p[3] = 255;
else
p[3] = 0;
}
}
}
}
return 0;
}
static int init_axis_from_font(ShowCQTContext *s)
{
AVFrame *tmp = NULL;
int ret = AVERROR(ENOMEM);
int width = 1920, height = 32;
int default_font = 0;
if (!(tmp = alloc_frame_empty(AV_PIX_FMT_RGBA, width, height)))
goto fail;
if (!(s->axis_frame = av_frame_alloc()))
goto fail;
if (render_freetype(s, tmp, s->fontfile) < 0 &&
render_fontconfig(s, tmp, s->font) < 0 &&
(default_font = 1, ret = render_default_font(tmp)) < 0)
goto fail;
if (default_font)
width /= 2, height /= 2;
if ((ret = init_axis_color(s, tmp, default_font)) < 0)
goto fail;
if ((ret = ff_scale_image(s->axis_frame->data, s->axis_frame->linesize, s->width, s->axis_h,
convert_axis_pixel_format(s->format), tmp->data, tmp->linesize,
width, height, AV_PIX_FMT_RGBA, s->ctx)) < 0)
goto fail;
av_frame_free(&tmp);
s->axis_frame->width = s->width;
s->axis_frame->height = s->axis_h;
s->axis_frame->format = convert_axis_pixel_format(s->format);
return 0;
fail:
av_frame_free(&tmp);
av_frame_free(&s->axis_frame);
return ret;
}
static float calculate_gamma(float v, float g)
{
if (g == 1.0f)
return v;
if (g == 2.0f)
return sqrtf(v);
if (g == 3.0f)
return cbrtf(v);
if (g == 4.0f)
return sqrtf(sqrtf(v));
return expf(logf(v) / g);
}
static void rgb_from_cqt(ColorFloat *c, const AVComplexFloat *v, float g, int len, float cscheme[6])
{
int x;
for (x = 0; x < len; x++) {
c[x].rgb.r = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[0] * v[x].re + cscheme[3] * v[x].im), g);
c[x].rgb.g = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[1] * v[x].re + cscheme[4] * v[x].im), g);
c[x].rgb.b = 255.0f * calculate_gamma(FFMIN(1.0f, cscheme[2] * v[x].re + cscheme[5] * v[x].im), g);
}
}
static void yuv_from_cqt(ColorFloat *c, const AVComplexFloat *v, float gamma, int len, float cm[3][3], float cscheme[6])
{
int x;
for (x = 0; x < len; x++) {
float r, g, b;
r = calculate_gamma(FFMIN(1.0f, cscheme[0] * v[x].re + cscheme[3] * v[x].im), gamma);
g = calculate_gamma(FFMIN(1.0f, cscheme[1] * v[x].re + cscheme[4] * v[x].im), gamma);
b = calculate_gamma(FFMIN(1.0f, cscheme[2] * v[x].re + cscheme[5] * v[x].im), gamma);
c[x].yuv.y = cm[0][0] * r + cm[0][1] * g + cm[0][2] * b;
c[x].yuv.u = cm[1][0] * r + cm[1][1] * g + cm[1][2] * b;
c[x].yuv.v = cm[2][0] * r + cm[2][1] * g + cm[2][2] * b;
}
}
static void draw_bar_rgb(AVFrame *out, const float *h, const float *rcp_h,
const ColorFloat *c, int bar_h, float bar_t)
{
int x, y, w = out->width;
float mul, ht, rcp_bar_h = 1.0f / bar_h, rcp_bar_t = 1.0f / bar_t;
uint8_t *v = out->data[0], *lp;
int ls = out->linesize[0];
for (y = 0; y < bar_h; y++) {
ht = (bar_h - y) * rcp_bar_h;
lp = v + y * ls;
for (x = 0; x < w; x++) {
if (h[x] <= ht) {
*lp++ = 0;
*lp++ = 0;
*lp++ = 0;
} else {
mul = (h[x] - ht) * rcp_h[x];
mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f;
*lp++ = lrintf(mul * c[x].rgb.r);
*lp++ = lrintf(mul * c[x].rgb.g);
*lp++ = lrintf(mul * c[x].rgb.b);
}
}
}
}
#define DRAW_BAR_WITH_CHROMA(x) \
do { \
if (h[x] <= ht) { \
*lpy++ = 16; \
*lpu++ = 128; \
*lpv++ = 128; \
} else { \
mul = (h[x] - ht) * rcp_h[x]; \
mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
*lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
*lpu++ = lrintf(mul * c[x].yuv.u + 128.0f); \
*lpv++ = lrintf(mul * c[x].yuv.v + 128.0f); \
} \
} while (0)
#define DRAW_BAR_WITHOUT_CHROMA(x) \
do { \
if (h[x] <= ht) { \
*lpy++ = 16; \
} else { \
mul = (h[x] - ht) * rcp_h[x]; \
mul = (mul < bar_t) ? (mul * rcp_bar_t) : 1.0f; \
*lpy++ = lrintf(mul * c[x].yuv.y + 16.0f); \
} \
} while (0)
static void draw_bar_yuv(AVFrame *out, const float *h, const float *rcp_h,
const ColorFloat *c, int bar_h, float bar_t)
{
int x, y, yh, w = out->width;
float mul, ht, rcp_bar_h = 1.0f / bar_h, rcp_bar_t = 1.0f / bar_t;
uint8_t *vy = out->data[0], *vu = out->data[1], *vv = out->data[2];
uint8_t *lpy, *lpu, *lpv;
int lsy = out->linesize[0], lsu = out->linesize[1], lsv = out->linesize[2];
int fmt = out->format;
for (y = 0; y < bar_h; y += 2) {
yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
ht = (bar_h - y) * rcp_bar_h;
lpy = vy + y * lsy;
lpu = vu + yh * lsu;
lpv = vv + yh * lsv;
if (fmt == AV_PIX_FMT_YUV444P) {
for (x = 0; x < w; x += 2) {
DRAW_BAR_WITH_CHROMA(x);
DRAW_BAR_WITH_CHROMA(x+1);
}
} else {
for (x = 0; x < w; x += 2) {
DRAW_BAR_WITH_CHROMA(x);
DRAW_BAR_WITHOUT_CHROMA(x+1);
}
}
ht = (bar_h - (y+1)) * rcp_bar_h;
lpy = vy + (y+1) * lsy;
lpu = vu + (y+1) * lsu;
lpv = vv + (y+1) * lsv;
if (fmt == AV_PIX_FMT_YUV444P) {
for (x = 0; x < w; x += 2) {
DRAW_BAR_WITH_CHROMA(x);
DRAW_BAR_WITH_CHROMA(x+1);
}
} else if (fmt == AV_PIX_FMT_YUV422P) {
for (x = 0; x < w; x += 2) {
DRAW_BAR_WITH_CHROMA(x);
DRAW_BAR_WITHOUT_CHROMA(x+1);
}
} else {
for (x = 0; x < w; x += 2) {
DRAW_BAR_WITHOUT_CHROMA(x);
DRAW_BAR_WITHOUT_CHROMA(x+1);
}
}
}
}
static void draw_axis_rgb(AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
{
int x, y, w = axis->width, h = axis->height;
float a, rcp_255 = 1.0f / 255.0f;
uint8_t *lp, *lpa;
for (y = 0; y < h; y++) {
lp = out->data[0] + (off + y) * out->linesize[0];
lpa = axis->data[0] + y * axis->linesize[0];
for (x = 0; x < w; x++) {
if (!lpa[3]) {
*lp++ = lrintf(c[x].rgb.r);
*lp++ = lrintf(c[x].rgb.g);
*lp++ = lrintf(c[x].rgb.b);
} else if (lpa[3] == 255) {
*lp++ = lpa[0];
*lp++ = lpa[1];
*lp++ = lpa[2];
} else {
a = rcp_255 * lpa[3];
*lp++ = lrintf(a * lpa[0] + (1.0f - a) * c[x].rgb.r);
*lp++ = lrintf(a * lpa[1] + (1.0f - a) * c[x].rgb.g);
*lp++ = lrintf(a * lpa[2] + (1.0f - a) * c[x].rgb.b);
}
lpa += 4;
}
}
}
#define BLEND_WITH_CHROMA(c) \
do { \
if (!*lpaa) { \
*lpy = lrintf(c.yuv.y + 16.0f); \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == *lpaa) { \
*lpy = *lpay; \
*lpu = *lpau; \
*lpv = *lpav; \
} else { \
float a = (1.0f/255.0f) * (*lpaa); \
*lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
*lpu = lrintf(a * (*lpau) + (1.0f - a) * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a * (*lpav) + (1.0f - a) * (c.yuv.v + 128.0f)); \
} \
lpy++; lpu++; lpv++; \
lpay++; lpau++; lpav++; lpaa++; \
} while (0)
#define BLEND_WITHOUT_CHROMA(c, alpha_inc) \
do { \
if (!*lpaa) { \
*lpy = lrintf(c.yuv.y + 16.0f); \
} else if (255 == *lpaa) { \
*lpy = *lpay; \
} else { \
float a = (1.0f/255.0f) * (*lpaa); \
*lpy = lrintf(a * (*lpay) + (1.0f - a) * (c.yuv.y + 16.0f)); \
} \
lpy++; \
lpay++; lpaa += alpha_inc; \
} while (0)
#define BLEND_CHROMA2(c) \
do { \
if (!lpaa[0] && !lpaa[1]) { \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == lpaa[0] && 255 == lpaa[1]) { \
*lpu = *lpau; *lpv = *lpav; \
} else { \
float a0 = (0.5f/255.0f) * lpaa[0]; \
float a1 = (0.5f/255.0f) * lpaa[1]; \
float b = 1.0f - a0 - a1; \
*lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + b * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + b * (c.yuv.v + 128.0f)); \
} \
lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
} while (0)
#define BLEND_CHROMA2x2(c) \
do { \
if (!lpaa[0] && !lpaa[1] && !lpaa[lsaa] && !lpaa[lsaa+1]) { \
*lpu = lrintf(c.yuv.u + 128.0f); \
*lpv = lrintf(c.yuv.v + 128.0f); \
} else if (255 == lpaa[0] && 255 == lpaa[1] && \
255 == lpaa[lsaa] && 255 == lpaa[lsaa+1]) { \
*lpu = *lpau; *lpv = *lpav; \
} else { \
float a0 = (0.25f/255.0f) * lpaa[0]; \
float a1 = (0.25f/255.0f) * lpaa[1]; \
float a2 = (0.25f/255.0f) * lpaa[lsaa]; \
float a3 = (0.25f/255.0f) * lpaa[lsaa+1]; \
float b = 1.0f - a0 - a1 - a2 - a3; \
*lpu = lrintf(a0 * lpau[0] + a1 * lpau[1] + a2 * lpau[lsau] + a3 * lpau[lsau+1] \
+ b * (c.yuv.u + 128.0f)); \
*lpv = lrintf(a0 * lpav[0] + a1 * lpav[1] + a2 * lpav[lsav] + a3 * lpav[lsav+1] \
+ b * (c.yuv.v + 128.0f)); \
} \
lpau += 2; lpav += 2; lpaa++; lpu++; lpv++; \
} while (0)
static void draw_axis_yuv(AVFrame *out, AVFrame *axis, const ColorFloat *c, int off)
{
int fmt = out->format, x, y, yh, w = axis->width, h = axis->height;
int offh = (fmt == AV_PIX_FMT_YUV420P) ? off / 2 : off;
uint8_t *vy = out->data[0], *vu = out->data[1], *vv = out->data[2];
uint8_t *vay = axis->data[0], *vau = axis->data[1], *vav = axis->data[2], *vaa = axis->data[3];
int lsy = out->linesize[0], lsu = out->linesize[1], lsv = out->linesize[2];
int lsay = axis->linesize[0], lsau = axis->linesize[1], lsav = axis->linesize[2], lsaa = axis->linesize[3];
uint8_t *lpy, *lpu, *lpv, *lpay, *lpau, *lpav, *lpaa;
for (y = 0; y < h; y += 2) {
yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
lpy = vy + (off + y) * lsy;
lpu = vu + (offh + yh) * lsu;
lpv = vv + (offh + yh) * lsv;
lpay = vay + y * lsay;
lpau = vau + y * lsau;
lpav = vav + y * lsav;
lpaa = vaa + y * lsaa;
if (fmt == AV_PIX_FMT_YUV444P) {
for (x = 0; x < w; x += 2) {
BLEND_WITH_CHROMA(c[x]);
BLEND_WITH_CHROMA(c[x+1]);
}
} else if (fmt == AV_PIX_FMT_YUV422P) {
for (x = 0; x < w; x += 2) {
BLEND_WITHOUT_CHROMA(c[x], 0);
BLEND_CHROMA2(c[x]);
BLEND_WITHOUT_CHROMA(c[x+1], 1);
}
} else {
for (x = 0; x < w; x += 2) {
BLEND_WITHOUT_CHROMA(c[x], 0);
BLEND_CHROMA2x2(c[x]);
BLEND_WITHOUT_CHROMA(c[x+1], 1);
}
}
lpy = vy + (off + y + 1) * lsy;
lpu = vu + (off + y + 1) * lsu;
lpv = vv + (off + y + 1) * lsv;
lpay = vay + (y + 1) * lsay;
lpau = vau + (y + 1) * lsau;
lpav = vav + (y + 1) * lsav;
lpaa = vaa + (y + 1) * lsaa;
if (fmt == AV_PIX_FMT_YUV444P) {
for (x = 0; x < w; x += 2) {
BLEND_WITH_CHROMA(c[x]);
BLEND_WITH_CHROMA(c[x+1]);
}
} else if (fmt == AV_PIX_FMT_YUV422P) {
for (x = 0; x < w; x += 2) {
BLEND_WITHOUT_CHROMA(c[x], 0);
BLEND_CHROMA2(c[x]);
BLEND_WITHOUT_CHROMA(c[x+1], 1);
}
} else {
for (x = 0; x < w; x += 2) {
BLEND_WITHOUT_CHROMA(c[x], 1);
BLEND_WITHOUT_CHROMA(c[x+1], 1);
}
}
}
}
static void draw_sono(AVFrame *out, AVFrame *sono, int off, int idx)
{
int fmt = out->format, h = sono->height;
int nb_planes = (fmt == AV_PIX_FMT_RGB24) ? 1 : 3;
int offh = (fmt == AV_PIX_FMT_YUV420P) ? off / 2 : off;
int inc = (fmt == AV_PIX_FMT_YUV420P) ? 2 : 1;
int ls, i, y, yh;
ls = FFMIN(out->linesize[0], sono->linesize[0]);
for (y = 0; y < h; y++) {
memcpy(out->data[0] + (off + y) * out->linesize[0],
sono->data[0] + (idx + y) % h * sono->linesize[0], ls);
}
for (i = 1; i < nb_planes; i++) {
ls = FFMIN(out->linesize[i], sono->linesize[i]);
for (y = 0; y < h; y += inc) {
yh = (fmt == AV_PIX_FMT_YUV420P) ? y / 2 : y;
memcpy(out->data[i] + (offh + yh) * out->linesize[i],
sono->data[i] + (idx + y) % h * sono->linesize[i], ls);
}
}
}
static void update_sono_rgb(AVFrame *sono, const ColorFloat *c, int idx)
{
int x, w = sono->width;
uint8_t *lp = sono->data[0] + idx * sono->linesize[0];
for (x = 0; x < w; x++) {
*lp++ = lrintf(c[x].rgb.r);
*lp++ = lrintf(c[x].rgb.g);
*lp++ = lrintf(c[x].rgb.b);
}
}
static void update_sono_yuv(AVFrame *sono, const ColorFloat *c, int idx)
{
int x, fmt = sono->format, w = sono->width;
uint8_t *lpy = sono->data[0] + idx * sono->linesize[0];
uint8_t *lpu = sono->data[1] + idx * sono->linesize[1];
uint8_t *lpv = sono->data[2] + idx * sono->linesize[2];
for (x = 0; x < w; x += 2) {
*lpy++ = lrintf(c[x].yuv.y + 16.0f);
*lpu++ = lrintf(c[x].yuv.u + 128.0f);
*lpv++ = lrintf(c[x].yuv.v + 128.0f);
*lpy++ = lrintf(c[x+1].yuv.y + 16.0f);
if (fmt == AV_PIX_FMT_YUV444P) {
*lpu++ = lrintf(c[x+1].yuv.u + 128.0f);
*lpv++ = lrintf(c[x+1].yuv.v + 128.0f);
}
}
}
static void process_cqt(ShowCQTContext *s)
{
int x, i;
if (!s->sono_count) {
for (x = 0; x < s->cqt_len; x++) {
s->h_buf[x] = s->bar_v_buf[x] * 0.5f * (s->cqt_result[x].re + s->cqt_result[x].im);
}
if (s->fcount > 1) {
float rcp_fcount = 1.0f / s->fcount;
for (x = 0; x < s->width; x++) {
float h = 0.0f;
for (i = 0; i < s->fcount; i++)
h += s->h_buf[s->fcount * x + i];
s->h_buf[x] = rcp_fcount * h;
}
}
for (x = 0; x < s->width; x++) {
s->h_buf[x] = calculate_gamma(s->h_buf[x], s->bar_g);
s->rcp_h_buf[x] = 1.0f / (s->h_buf[x] + 0.0001f);
}
}
for (x = 0; x < s->cqt_len; x++) {
s->cqt_result[x].re *= s->sono_v_buf[x];
s->cqt_result[x].im *= s->sono_v_buf[x];
}
if (s->fcount > 1) {
float rcp_fcount = 1.0f / s->fcount;
for (x = 0; x < s->width; x++) {
AVComplexFloat result = {0.0f, 0.0f};
for (i = 0; i < s->fcount; i++) {
result.re += s->cqt_result[s->fcount * x + i].re;
result.im += s->cqt_result[s->fcount * x + i].im;
}
s->cqt_result[x].re = rcp_fcount * result.re;
s->cqt_result[x].im = rcp_fcount * result.im;
}
}
if (s->format == AV_PIX_FMT_RGB24)
rgb_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width, s->cscheme_v);
else
yuv_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width, s->cmatrix, s->cscheme_v);
}
static int plot_cqt(AVFilterContext *ctx, AVFrame **frameout)
{
AVFilterLink *outlink = ctx->outputs[0];
ShowCQTContext *s = ctx->priv;
int64_t last_time, cur_time;
#define UPDATE_TIME(t) \
cur_time = av_gettime_relative(); \
t += cur_time - last_time; \
last_time = cur_time
last_time = av_gettime_relative();
memcpy(s->fft_input, s->fft_data, s->fft_len * sizeof(*s->fft_data));
if (s->attack_data) {
int k;
for (k = 0; k < s->remaining_fill_max; k++) {
s->fft_input[s->fft_len/2+k].re *= s->attack_data[k];
s->fft_input[s->fft_len/2+k].im *= s->attack_data[k];
}
}
s->tx_fn(s->fft_ctx, s->fft_result, s->fft_input, sizeof(float));
s->fft_result[s->fft_len] = s->fft_result[0];
UPDATE_TIME(s->fft_time);
s->cqt_calc(s->cqt_result, s->fft_result, s->coeffs, s->cqt_len, s->fft_len);
UPDATE_TIME(s->cqt_time);
process_cqt(s);
UPDATE_TIME(s->process_cqt_time);
if (s->sono_h) {
s->update_sono(s->sono_frame, s->c_buf, s->sono_idx);
UPDATE_TIME(s->update_sono_time);
}
if (!s->sono_count) {
AVFrame *out = *frameout = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out)
return AVERROR(ENOMEM);
out->sample_aspect_ratio = av_make_q(1, 1);
out->color_range = AVCOL_RANGE_MPEG;
out->colorspace = s->csp;
UPDATE_TIME(s->alloc_time);
if (s->bar_h) {
s->draw_bar(out, s->h_buf, s->rcp_h_buf, s->c_buf, s->bar_h, s->bar_t);
UPDATE_TIME(s->bar_time);
}
if (s->axis_h) {
s->draw_axis(out, s->axis_frame, s->c_buf, s->bar_h);
UPDATE_TIME(s->axis_time);
}
if (s->sono_h) {
s->draw_sono(out, s->sono_frame, s->bar_h + s->axis_h, s->sono_idx);
UPDATE_TIME(s->sono_time);
}
out->pts = s->next_pts;
s->next_pts += PTS_STEP;
}
s->sono_count = (s->sono_count + 1) % s->count;
if (s->sono_h)
s->sono_idx = (s->sono_idx + s->sono_h - 1) % s->sono_h;
return 0;
}
static void init_colormatrix(ShowCQTContext *s)
{
double kr, kg, kb;
/* from vf_colorspace.c */
switch (s->csp) {
default:
av_log(s->ctx, AV_LOG_WARNING, "unsupported colorspace, setting it to unspecified.\n");
s->csp = AVCOL_SPC_UNSPECIFIED;
case AVCOL_SPC_UNSPECIFIED:
case AVCOL_SPC_BT470BG:
case AVCOL_SPC_SMPTE170M:
kr = 0.299; kb = 0.114; break;
case AVCOL_SPC_BT709:
kr = 0.2126; kb = 0.0722; break;
case AVCOL_SPC_FCC:
kr = 0.30; kb = 0.11; break;
case AVCOL_SPC_SMPTE240M:
kr = 0.212; kb = 0.087; break;
case AVCOL_SPC_BT2020_NCL:
kr = 0.2627; kb = 0.0593; break;
}
kg = 1.0 - kr - kb;
s->cmatrix[0][0] = 219.0 * kr;
s->cmatrix[0][1] = 219.0 * kg;
s->cmatrix[0][2] = 219.0 * kb;
s->cmatrix[1][0] = -112.0 * kr / (1.0 - kb);
s->cmatrix[1][1] = -112.0 * kg / (1.0 - kb);
s->cmatrix[1][2] = 112.0;
s->cmatrix[2][0] = 112.0;
s->cmatrix[2][1] = -112.0 * kg / (1.0 - kr);
s->cmatrix[2][2] = -112.0 * kb / (1.0 - kr);
}
static int init_cscheme(ShowCQTContext *s)
{
char tail[2];
int k;
if (sscanf(s->cscheme, " %f | %f | %f | %f | %f | %f %1s", &s->cscheme_v[0],
&s->cscheme_v[1], &s->cscheme_v[2], &s->cscheme_v[3], &s->cscheme_v[4],
&s->cscheme_v[5], tail) != 6)
goto fail;
for (k = 0; k < 6; k++)
if (isnan(s->cscheme_v[k]) || s->cscheme_v[k] < 0.0f || s->cscheme_v[k] > 1.0f)
goto fail;
return 0;
fail:
av_log(s->ctx, AV_LOG_ERROR, "invalid cscheme.\n");
return AVERROR(EINVAL);
}
/* main filter control */
static av_cold int init(AVFilterContext *ctx)
{
ShowCQTContext *s = ctx->priv;
s->ctx = ctx;
if (!s->fullhd) {
av_log(ctx, AV_LOG_WARNING, "fullhd option is deprecated, use size/s option instead.\n");
if (s->width != 1920 || s->height != 1080) {
av_log(ctx, AV_LOG_ERROR, "fullhd set to 0 but with custom dimension.\n");
return AVERROR(EINVAL);
}
s->width /= 2;
s->height /= 2;
s->fullhd = 1;
}
if (s->axis_h < 0) {
s->axis_h = s->width / 60;
if (s->axis_h & 1)
s->axis_h++;
if (s->bar_h >= 0 && s->sono_h >= 0)
s->axis_h = s->height - s->bar_h - s->sono_h;
if (s->bar_h >= 0 && s->sono_h < 0)
s->axis_h = FFMIN(s->axis_h, s->height - s->bar_h);
if (s->bar_h < 0 && s->sono_h >= 0)
s->axis_h = FFMIN(s->axis_h, s->height - s->sono_h);
}
if (s->bar_h < 0) {
s->bar_h = (s->height - s->axis_h) / 2;
if (s->bar_h & 1)
s->bar_h--;
if (s->sono_h >= 0)
s->bar_h = s->height - s->sono_h - s->axis_h;
}
if (s->sono_h < 0)
s->sono_h = s->height - s->axis_h - s->bar_h;
if ((s->width & 1) || (s->height & 1) || (s->bar_h & 1) || (s->axis_h & 1) || (s->sono_h & 1) ||
(s->bar_h < 0) || (s->axis_h < 0) || (s->sono_h < 0) || (s->bar_h > s->height) ||
(s->axis_h > s->height) || (s->sono_h > s->height) || (s->bar_h + s->axis_h + s->sono_h != s->height)) {
av_log(ctx, AV_LOG_ERROR, "invalid dimension.\n");
return AVERROR(EINVAL);
}
if (!s->fcount) {
do {
s->fcount++;
} while(s->fcount * s->width < 1920 && s->fcount < 10);
}
init_colormatrix(s);
return init_cscheme(s);
}
static av_cold void uninit(AVFilterContext *ctx)
{
common_uninit(ctx->priv);
}
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *formats = NULL;
AVFilterChannelLayouts *layouts = NULL;
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE };
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE
};
static const int64_t channel_layouts[] = { AV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_STEREO_DOWNMIX, -1 };
int ret;
/* set input audio formats */
formats = ff_make_format_list(sample_fmts);
if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
return ret;
layouts = ff_make_format64_list(channel_layouts);
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;
/* set output video format */
formats = ff_make_format_list(pix_fmts);
if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
return ret;
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = ctx->inputs[0];
ShowCQTContext *s = ctx->priv;
float scale;
int ret;
common_uninit(s);
outlink->w = s->width;
outlink->h = s->height;
s->format = outlink->format;
outlink->sample_aspect_ratio = av_make_q(1, 1);
outlink->frame_rate = s->rate;
outlink->time_base = av_mul_q(av_inv_q(s->rate), av_make_q(1, PTS_STEP));
av_log(ctx, AV_LOG_INFO, "video: %dx%d %s %d/%d fps, bar_h = %d, axis_h = %d, sono_h = %d.\n",
s->width, s->height, av_get_pix_fmt_name(s->format), s->rate.num, s->rate.den,
s->bar_h, s->axis_h, s->sono_h);
s->cqt_len = s->width * s->fcount;
if (!(s->freq = create_freq_table(s->basefreq, s->endfreq, s->cqt_len)))
return AVERROR(ENOMEM);
if ((ret = init_volume(s)) < 0)
return ret;
s->fft_bits = FFMAX(ceil(log2(inlink->sample_rate * s->timeclamp)), 4);
s->fft_len = 1 << s->fft_bits;
av_log(ctx, AV_LOG_INFO, "fft_len = %d, cqt_len = %d.\n", s->fft_len, s->cqt_len);
ret = av_tx_init(&s->fft_ctx, &s->tx_fn, AV_TX_FLOAT_FFT, 0, s->fft_len, &scale, 0);
s->fft_data = av_calloc(s->fft_len, sizeof(*s->fft_data));
s->fft_input = av_calloc(FFALIGN(s->fft_len + 64, 256), sizeof(*s->fft_input));
s->fft_result = av_calloc(FFALIGN(s->fft_len + 64, 256), sizeof(*s->fft_result));
s->cqt_result = av_malloc_array(s->cqt_len, sizeof(*s->cqt_result));
if (!s->fft_ctx || !s->fft_data || !s->fft_result || !s->cqt_result)
return AVERROR(ENOMEM);
s->remaining_fill_max = s->fft_len / 2;
if (s->attack > 0.0) {
int k;
s->remaining_fill_max = FFMIN(s->remaining_fill_max, ceil(inlink->sample_rate * s->attack));
s->attack_data = av_malloc_array(s->remaining_fill_max, sizeof(*s->attack_data));
if (!s->attack_data)
return AVERROR(ENOMEM);
for (k = 0; k < s->remaining_fill_max; k++) {
double y = M_PI * k / (inlink->sample_rate * s->attack);
s->attack_data[k] = 0.355768 + 0.487396 * cos(y) + 0.144232 * cos(2*y) + 0.012604 * cos(3*y);
}
}
s->cqt_align = 1;
s->cqt_calc = cqt_calc;
s->permute_coeffs = NULL;
s->draw_sono = draw_sono;
if (s->format == AV_PIX_FMT_RGB24) {
s->draw_bar = draw_bar_rgb;
s->draw_axis = draw_axis_rgb;
s->update_sono = update_sono_rgb;
} else {
s->draw_bar = draw_bar_yuv;
s->draw_axis = draw_axis_yuv;
s->update_sono = update_sono_yuv;
}
if (ARCH_X86)
ff_showcqt_init_x86(s);
if ((ret = init_cqt(s)) < 0)
return ret;
if (s->axis_h) {
if (!s->axis) {
if ((ret = init_axis_empty(s)) < 0)
return ret;
} else if (s->axisfile) {
if (init_axis_from_file(s) < 0) {
av_log(ctx, AV_LOG_WARNING, "loading axis image failed, fallback to font rendering.\n");
if (init_axis_from_font(s) < 0) {
av_log(ctx, AV_LOG_WARNING, "loading axis font failed, disable text drawing.\n");
if ((ret = init_axis_empty(s)) < 0)
return ret;
}
}
} else {
if (init_axis_from_font(s) < 0) {
av_log(ctx, AV_LOG_WARNING, "loading axis font failed, disable text drawing.\n");
if ((ret = init_axis_empty(s)) < 0)
return ret;
}
}
}
if (s->sono_h) {
s->sono_frame = alloc_frame_empty((outlink->format == AV_PIX_FMT_YUV420P) ?
AV_PIX_FMT_YUV422P : outlink->format, s->width, s->sono_h);
if (!s->sono_frame)
return AVERROR(ENOMEM);
}
s->h_buf = av_malloc_array(s->cqt_len, sizeof (*s->h_buf));
s->rcp_h_buf = av_malloc_array(s->width, sizeof(*s->rcp_h_buf));
s->c_buf = av_malloc_array(s->width, sizeof(*s->c_buf));
if (!s->h_buf || !s->rcp_h_buf || !s->c_buf)
return AVERROR(ENOMEM);
s->sono_count = 0;
s->next_pts = 0;
s->sono_idx = 0;
s->remaining_fill = s->remaining_fill_max;
s->remaining_frac = 0;
s->step_frac = av_div_q(av_make_q(inlink->sample_rate, s->count) , s->rate);
s->step = (int)(s->step_frac.num / s->step_frac.den);
s->step_frac.num %= s->step_frac.den;
if (s->step_frac.num) {
av_log(ctx, AV_LOG_INFO, "audio: %d Hz, step = %d + %d/%d.\n",
inlink->sample_rate, s->step, s->step_frac.num, s->step_frac.den);
av_log(ctx, AV_LOG_WARNING, "fractional step.\n");
} else {
av_log(ctx, AV_LOG_INFO, "audio: %d Hz, step = %d.\n",
inlink->sample_rate, s->step);
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ShowCQTContext *s = ctx->priv;
int remaining, step, ret, x, i, j, m;
float *audio_data;
AVFrame *out = NULL;
if (!insamples) {
while (s->remaining_fill < s->remaining_fill_max) {
memset(&s->fft_data[s->fft_len/2 + s->remaining_fill_max - s->remaining_fill], 0, sizeof(*s->fft_data) * s->remaining_fill);
ret = plot_cqt(ctx, &out);
if (ret < 0)
return ret;
step = s->step + (s->step_frac.num + s->remaining_frac) / s->step_frac.den;
s->remaining_frac = (s->step_frac.num + s->remaining_frac) % s->step_frac.den;
for (x = 0; x < (s->fft_len/2 + s->remaining_fill_max - step); x++)
s->fft_data[x] = s->fft_data[x+step];
s->remaining_fill += step;
if (out)
return ff_filter_frame(outlink, out);
}
return AVERROR_EOF;
}
remaining = insamples->nb_samples;
audio_data = (float*) insamples->data[0];
while (remaining) {
i = insamples->nb_samples - remaining;
j = s->fft_len/2 + s->remaining_fill_max - s->remaining_fill;
if (remaining >= s->remaining_fill) {
for (m = 0; m < s->remaining_fill; m++) {
s->fft_data[j+m].re = audio_data[2*(i+m)];
s->fft_data[j+m].im = audio_data[2*(i+m)+1];
}
ret = plot_cqt(ctx, &out);
if (ret < 0) {
av_frame_free(&insamples);
return ret;
}
remaining -= s->remaining_fill;
if (out) {
int64_t pts = av_rescale_q(insamples->pts, inlink->time_base, av_make_q(1, inlink->sample_rate));
pts += insamples->nb_samples - remaining - s->remaining_fill_max;
pts = av_rescale_q(pts, av_make_q(1, inlink->sample_rate), outlink->time_base);
if (FFABS(pts - out->pts) > PTS_TOLERANCE) {
av_log(ctx, AV_LOG_DEBUG, "changing pts from %"PRId64" (%.3f) to %"PRId64" (%.3f).\n",
out->pts, out->pts * av_q2d(outlink->time_base),
pts, pts * av_q2d(outlink->time_base));
out->pts = pts;
s->next_pts = pts + PTS_STEP;
}
ret = ff_filter_frame(outlink, out);
if (ret < 0) {
av_frame_free(&insamples);
return ret;
}
out = NULL;
}
step = s->step + (s->step_frac.num + s->remaining_frac) / s->step_frac.den;
s->remaining_frac = (s->step_frac.num + s->remaining_frac) % s->step_frac.den;
for (m = 0; m < s->fft_len/2 + s->remaining_fill_max - step; m++)
s->fft_data[m] = s->fft_data[m+step];
s->remaining_fill = step;
} else {
for (m = 0; m < remaining; m++) {
s->fft_data[j+m].re = audio_data[2*(i+m)];
s->fft_data[j+m].im = audio_data[2*(i+m)+1];
}
s->remaining_fill -= remaining;
remaining = 0;
}
}
av_frame_free(&insamples);
return 0;
}
static int request_frame(AVFilterLink *outlink)
{
AVFilterLink *inlink = outlink->src->inputs[0];
int ret;
ret = ff_request_frame(inlink);
if (ret == AVERROR_EOF)
ret = filter_frame(inlink, NULL);
return ret;
}
static const AVFilterPad showcqt_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
},
};
static const AVFilterPad showcqt_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
};
const AVFilter ff_avf_showcqt = {
.name = "showcqt",
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a CQT (Constant/Clamped Q Transform) spectrum video output."),
.init = init,
.uninit = uninit,
.priv_size = sizeof(ShowCQTContext),
FILTER_INPUTS(showcqt_inputs),
FILTER_OUTPUTS(showcqt_outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &showcqt_class,
};
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