diff options
Diffstat (limited to 'libavfilter/avf_showcqt.c')
| -rw-r--r-- | libavfilter/avf_showcqt.c | 1577 |
1 files changed, 1577 insertions, 0 deletions
diff --git a/libavfilter/avf_showcqt.c b/libavfilter/avf_showcqt.c new file mode 100644 index 0000000000..ede56f4b1c --- /dev/null +++ b/libavfilter/avf_showcqt.c @@ -0,0 +1,1577 @@ +/* + * 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 "libavcodec/avfft.h" +#include "libavutil/avassert.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" }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "volume", "set sonogram volume", OFFSET(sono_v), AV_OPT_TYPE_STRING, { .str = "16" }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "bar_v", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "volume2", "set bargraph volume", OFFSET(bar_v), AV_OPT_TYPE_STRING, { .str = "sono_v" }, CHAR_MIN, CHAR_MAX, 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 }, + { "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 }, CHAR_MIN, CHAR_MAX, 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 }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "font", "set axis font", OFFSET(font), AV_OPT_TYPE_STRING, { .str = NULL }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "fontcolor", "set font color", OFFSET(fontcolor), AV_OPT_TYPE_STRING, { .str = FONTCOLOR }, CHAR_MIN, CHAR_MAX, FLAGS }, + { "axisfile", "set axis image", OFFSET(axisfile), AV_OPT_TYPE_STRING, { .str = NULL }, CHAR_MIN, CHAR_MAX, 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 }, CHAR_MIN, CHAR_MAX, 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_fft_end(s->fft_ctx); + s->fft_ctx = NULL; + 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_result); + av_freep(&s->cqt_result); + 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(FFTComplex *dst, const FFTComplex *src, const Coeffs *coeffs, + int len, int fft_len) +{ + int k, x, i, j; + for (k = 0; k < len; k++) { + FFTComplex l, r, a = {0,0}, b = {0,0}; + + for (x = 0; x < coeffs[k].len; x++) { + FFTSample 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, 32) < 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 FFTComplex *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 FFTComplex *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++) { + FFTComplex 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(); \ + t += cur_time - last_time; \ + last_time = cur_time + + last_time = av_gettime(); + + memcpy(s->fft_result, s->fft_data, s->fft_len * sizeof(*s->fft_data)); + av_fft_permute(s->fft_ctx, s->fft_result); + av_fft_calc(s->fft_ctx, s->fft_result); + 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); + av_frame_set_color_range(out, AVCOL_RANGE_MPEG); + av_frame_set_colorspace(out, 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]; + enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_NONE }; + enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, + AV_PIX_FMT_YUV444P, AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE + }; + 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->out_formats)) < 0) + return ret; + + layouts = avfilter_make_format64_list(channel_layouts); + 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; + + /* set output video format */ + formats = ff_make_format_list(pix_fmts); + if ((ret = ff_formats_ref(formats, &outlink->in_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; + 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); + + s->fft_ctx = av_fft_init(s->fft_bits, 0); + s->fft_data = av_calloc(s->fft_len, sizeof(*s->fft_data)); + s->fft_result = av_calloc(s->fft_len + 64, 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->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->fft_len / 2; + 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->fft_len / 2) { + memset(&s->fft_data[s->fft_len - 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-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 - 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->fft_len/2; + 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-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, + }, + { NULL } +}; + +static const AVFilterPad showcqt_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + .request_frame = request_frame, + }, + { NULL } +}; + +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, + .query_formats = query_formats, + .priv_size = sizeof(ShowCQTContext), + .inputs = showcqt_inputs, + .outputs = showcqt_outputs, + .priv_class = &showcqt_class, +}; 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