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avf_showcqt.c
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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 "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include "lavfutils.h"
#include "lswsutils.h"
#include "video.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 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, .unit = "csp" },
{ "unspecified", "unspecified", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, 0, FLAGS, .unit = "csp" },
{ "bt709", "bt709", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT709 }, 0, 0, FLAGS, .unit = "csp" },
{ "fcc", "fcc", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_FCC }, 0, 0, FLAGS, .unit = "csp" },
{ "bt470bg", "bt470bg", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, .unit = "csp" },
{ "smpte170m", "smpte170m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE170M }, 0, 0, FLAGS, .unit = "csp" },
{ "smpte240m", "smpte240m", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE240M }, 0, 0, FLAGS, .unit = "csp" },
{ "bt2020ncl", "bt2020ncl", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT2020_NCL }, 0, 0, FLAGS, .unit = "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_VERBOSE, "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);
}