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/* |
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* Copyright (c) 2012-2013 Clément Bœsch |
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* Copyright (c) 2013 Rudolf Polzer <divverent@xonotic.org> |
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* Copyright (c) 2015 Paul B Mahol |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* audio to spectrum (video) transmedia filter, based on ffplay rdft showmode |
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* (by Michael Niedermayer) and lavfi/avf_showwaves (by Stefano Sabatini). |
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*/ |
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#include <math.h> |
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#include "libavcodec/avfft.h" |
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#include "libavutil/audio_fifo.h" |
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#include "libavutil/avassert.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/xga_font_data.h" |
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#include "audio.h" |
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#include "video.h" |
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#include "avfilter.h" |
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#include "filters.h" |
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#include "internal.h" |
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#include "window_func.h" |
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enum DisplayMode { COMBINED, SEPARATE, NB_MODES }; |
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enum DataMode { D_MAGNITUDE, D_PHASE, NB_DMODES }; |
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enum FrequencyScale { F_LINEAR, F_LOG, NB_FSCALES }; |
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enum DisplayScale { LINEAR, SQRT, CBRT, LOG, FOURTHRT, FIFTHRT, NB_SCALES }; |
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enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, PLASMA, CIVIDIS, TERRAIN, NB_CLMODES }; |
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enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES }; |
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enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS }; |
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typedef struct ShowSpectrumContext { |
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const AVClass *class; |
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int w, h; |
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char *rate_str; |
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AVRational auto_frame_rate; |
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AVRational frame_rate; |
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AVFrame *outpicref; |
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int nb_display_channels; |
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int orientation; |
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int channel_width; |
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int channel_height; |
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int sliding; ///< 1 if sliding mode, 0 otherwise |
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int mode; ///< channel display mode |
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int color_mode; ///< display color scheme |
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int scale; |
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int fscale; |
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float saturation; ///< color saturation multiplier |
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float rotation; ///< color rotation |
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int start, stop; ///< zoom mode |
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int data; |
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int xpos; ///< x position (current column) |
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FFTContext **fft; ///< Fast Fourier Transform context |
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FFTContext **ifft; ///< Inverse Fast Fourier Transform context |
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int fft_bits; ///< number of bits (FFT window size = 1<<fft_bits) |
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FFTComplex **fft_data; ///< bins holder for each (displayed) channels |
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FFTComplex **fft_scratch; ///< scratch buffers |
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float *window_func_lut; ///< Window function LUT |
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float **magnitudes; |
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float **phases; |
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int win_func; |
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int win_size; |
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int buf_size; |
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double win_scale; |
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float overlap; |
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float gain; |
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int consumed; |
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int hop_size; |
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float *combine_buffer; ///< color combining buffer (3 * h items) |
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float **color_buffer; ///< color buffer (3 * h * ch items) |
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AVAudioFifo *fifo; |
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int64_t pts; |
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int64_t old_pts; |
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int old_len; |
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int single_pic; |
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int legend; |
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int start_x, start_y; |
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int (*plot_channel)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
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} ShowSpectrumContext; |
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#define OFFSET(x) offsetof(ShowSpectrumContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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static const AVOption showspectrum_options[] = { |
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{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS }, |
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{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "640x512"}, 0, 0, FLAGS }, |
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{ "slide", "set sliding mode", OFFSET(sliding), AV_OPT_TYPE_INT, {.i64 = 0}, 0, NB_SLIDES-1, FLAGS, "slide" }, |
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{ "replace", "replace old columns with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, "slide" }, |
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{ "scroll", "scroll from right to left", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" }, |
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{ "fullframe", "return full frames", 0, AV_OPT_TYPE_CONST, {.i64=FULLFRAME}, 0, 0, FLAGS, "slide" }, |
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{ "rscroll", "scroll from left to right", 0, AV_OPT_TYPE_CONST, {.i64=RSCROLL}, 0, 0, FLAGS, "slide" }, |
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{ "mode", "set channel display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=COMBINED}, COMBINED, NB_MODES-1, FLAGS, "mode" }, |
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{ "combined", "combined mode", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, "mode" }, |
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{ "separate", "separate mode", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "mode" }, |
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{ "color", "set channel coloring", OFFSET(color_mode), AV_OPT_TYPE_INT, {.i64=CHANNEL}, CHANNEL, NB_CLMODES-1, FLAGS, "color" }, |
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{ "channel", "separate color for each channel", 0, AV_OPT_TYPE_CONST, {.i64=CHANNEL}, 0, 0, FLAGS, "color" }, |
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{ "intensity", "intensity based coloring", 0, AV_OPT_TYPE_CONST, {.i64=INTENSITY}, 0, 0, FLAGS, "color" }, |
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{ "rainbow", "rainbow based coloring", 0, AV_OPT_TYPE_CONST, {.i64=RAINBOW}, 0, 0, FLAGS, "color" }, |
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{ "moreland", "moreland based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MORELAND}, 0, 0, FLAGS, "color" }, |
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{ "nebulae", "nebulae based coloring", 0, AV_OPT_TYPE_CONST, {.i64=NEBULAE}, 0, 0, FLAGS, "color" }, |
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{ "fire", "fire based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIRE}, 0, 0, FLAGS, "color" }, |
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{ "fiery", "fiery based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIERY}, 0, 0, FLAGS, "color" }, |
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{ "fruit", "fruit based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FRUIT}, 0, 0, FLAGS, "color" }, |
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{ "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, "color" }, |
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{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" }, |
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{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" }, |
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{ "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" }, |
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{ "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" }, |
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{ "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" }, |
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{ "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, "color" }, |
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{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=SQRT}, LINEAR, NB_SCALES-1, FLAGS, "scale" }, |
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{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" }, |
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{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" }, |
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{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" }, |
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{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" }, |
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{ "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, "scale" }, |
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{ "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, "scale" }, |
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{ "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, "fscale" }, |
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{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, "fscale" }, |
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{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, "fscale" }, |
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{ "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS }, |
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{ "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64 = WFUNC_HANNING}, 0, NB_WFUNC-1, FLAGS, "win_func" }, |
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{ "rect", "Rectangular", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT}, 0, 0, FLAGS, "win_func" }, |
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{ "bartlett", "Bartlett", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, FLAGS, "win_func" }, |
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{ "hann", "Hann", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING}, 0, 0, FLAGS, "win_func" }, |
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{ "hanning", "Hanning", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING}, 0, 0, FLAGS, "win_func" }, |
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{ "hamming", "Hamming", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HAMMING}, 0, 0, FLAGS, "win_func" }, |
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{ "blackman", "Blackman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BLACKMAN}, 0, 0, FLAGS, "win_func" }, |
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{ "welch", "Welch", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_WELCH}, 0, 0, FLAGS, "win_func" }, |
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{ "flattop", "Flat-top", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_FLATTOP}, 0, 0, FLAGS, "win_func" }, |
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{ "bharris", "Blackman-Harris", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHARRIS}, 0, 0, FLAGS, "win_func" }, |
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{ "bnuttall", "Blackman-Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BNUTTALL}, 0, 0, FLAGS, "win_func" }, |
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{ "bhann", "Bartlett-Hann", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHANN}, 0, 0, FLAGS, "win_func" }, |
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{ "sine", "Sine", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_SINE}, 0, 0, FLAGS, "win_func" }, |
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{ "nuttall", "Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_NUTTALL}, 0, 0, FLAGS, "win_func" }, |
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{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_LANCZOS}, 0, 0, FLAGS, "win_func" }, |
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{ "gauss", "Gauss", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_GAUSS}, 0, 0, FLAGS, "win_func" }, |
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{ "tukey", "Tukey", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_TUKEY}, 0, 0, FLAGS, "win_func" }, |
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{ "dolph", "Dolph-Chebyshev", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_DOLPH}, 0, 0, FLAGS, "win_func" }, |
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{ "cauchy", "Cauchy", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY}, 0, 0, FLAGS, "win_func" }, |
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{ "parzen", "Parzen", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN}, 0, 0, FLAGS, "win_func" }, |
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{ "poisson", "Poisson", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON}, 0, 0, FLAGS, "win_func" }, |
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{ "bohman", "Bohman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN}, 0, 0, FLAGS, "win_func" }, |
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{ "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, "orientation" }, |
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{ "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, "orientation" }, |
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{ "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, "orientation" }, |
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{ "overlap", "set window overlap", OFFSET(overlap), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, 1, FLAGS }, |
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{ "gain", "set scale gain", OFFSET(gain), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 128, FLAGS }, |
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{ "data", "set data mode", OFFSET(data), AV_OPT_TYPE_INT, {.i64 = 0}, 0, NB_DMODES-1, FLAGS, "data" }, |
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{ "magnitude", NULL, 0, AV_OPT_TYPE_CONST, {.i64=D_MAGNITUDE}, 0, 0, FLAGS, "data" }, |
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{ "phase", NULL, 0, AV_OPT_TYPE_CONST, {.i64=D_PHASE}, 0, 0, FLAGS, "data" }, |
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{ "rotation", "color rotation", OFFSET(rotation), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -1, 1, FLAGS }, |
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{ "start", "start frequency", OFFSET(start), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS }, |
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{ "stop", "stop frequency", OFFSET(stop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS }, |
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{ "fps", "set video rate", OFFSET(rate_str), AV_OPT_TYPE_STRING, {.str = "auto"}, 0, 0, FLAGS }, |
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{ "legend", "draw legend", OFFSET(legend), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(showspectrum); |
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static const struct ColorTable { |
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float a, y, u, v; |
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} color_table[][8] = { |
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[INTENSITY] = { |
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{ 0, 0, 0, 0 }, |
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{ 0.13, .03587126228984074, .1573300977624594, -.02548747583751842 }, |
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{ 0.30, .18572281794568020, .1772436246393981, .17475554840414750 }, |
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{ 0.60, .28184980583656130, -.1593064119945782, .47132074554608920 }, |
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{ 0.73, .65830621175547810, -.3716070802232764, .24352759331252930 }, |
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{ 0.78, .76318535758242900, -.4307467689263783, .16866496622310430 }, |
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{ 0.91, .95336363636363640, -.2045454545454546, .03313636363636363 }, |
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{ 1, 1, 0, 0 }}, |
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[RAINBOW] = { |
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{ 0, 0, 0, 0 }, |
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{ 0.13, 44/256., (189-128)/256., (138-128)/256. }, |
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{ 0.25, 29/256., (186-128)/256., (119-128)/256. }, |
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{ 0.38, 119/256., (194-128)/256., (53-128)/256. }, |
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{ 0.60, 111/256., (73-128)/256., (59-128)/256. }, |
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{ 0.73, 205/256., (19-128)/256., (149-128)/256. }, |
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{ 0.86, 135/256., (83-128)/256., (200-128)/256. }, |
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{ 1, 73/256., (95-128)/256., (225-128)/256. }}, |
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[MORELAND] = { |
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{ 0, 44/256., (181-128)/256., (112-128)/256. }, |
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{ 0.13, 126/256., (177-128)/256., (106-128)/256. }, |
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{ 0.25, 164/256., (163-128)/256., (109-128)/256. }, |
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{ 0.38, 200/256., (140-128)/256., (120-128)/256. }, |
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{ 0.60, 201/256., (117-128)/256., (141-128)/256. }, |
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{ 0.73, 177/256., (103-128)/256., (165-128)/256. }, |
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{ 0.86, 136/256., (100-128)/256., (183-128)/256. }, |
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{ 1, 68/256., (117-128)/256., (203-128)/256. }}, |
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[NEBULAE] = { |
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{ 0, 10/256., (134-128)/256., (132-128)/256. }, |
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{ 0.23, 21/256., (137-128)/256., (130-128)/256. }, |
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{ 0.45, 35/256., (134-128)/256., (134-128)/256. }, |
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{ 0.57, 51/256., (130-128)/256., (139-128)/256. }, |
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{ 0.67, 104/256., (116-128)/256., (162-128)/256. }, |
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{ 0.77, 120/256., (105-128)/256., (188-128)/256. }, |
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{ 0.87, 140/256., (105-128)/256., (188-128)/256. }, |
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{ 1, 1, 0, 0 }}, |
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[FIRE] = { |
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{ 0, 0, 0, 0 }, |
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{ 0.23, 44/256., (132-128)/256., (127-128)/256. }, |
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{ 0.45, 62/256., (116-128)/256., (140-128)/256. }, |
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{ 0.57, 75/256., (105-128)/256., (152-128)/256. }, |
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{ 0.67, 95/256., (91-128)/256., (166-128)/256. }, |
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{ 0.77, 126/256., (74-128)/256., (172-128)/256. }, |
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{ 0.87, 164/256., (73-128)/256., (162-128)/256. }, |
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{ 1, 1, 0, 0 }}, |
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[FIERY] = { |
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{ 0, 0, 0, 0 }, |
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{ 0.23, 36/256., (116-128)/256., (163-128)/256. }, |
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|
|
{ 0.45, 52/256., (102-128)/256., (200-128)/256. }, |
236 |
|
|
{ 0.57, 116/256., (84-128)/256., (196-128)/256. }, |
237 |
|
|
{ 0.67, 157/256., (67-128)/256., (181-128)/256. }, |
238 |
|
|
{ 0.77, 193/256., (40-128)/256., (155-128)/256. }, |
239 |
|
|
{ 0.87, 221/256., (101-128)/256., (134-128)/256. }, |
240 |
|
|
{ 1, 1, 0, 0 }}, |
241 |
|
|
[FRUIT] = { |
242 |
|
|
{ 0, 0, 0, 0 }, |
243 |
|
|
{ 0.20, 29/256., (136-128)/256., (119-128)/256. }, |
244 |
|
|
{ 0.30, 60/256., (119-128)/256., (90-128)/256. }, |
245 |
|
|
{ 0.40, 85/256., (91-128)/256., (85-128)/256. }, |
246 |
|
|
{ 0.50, 116/256., (70-128)/256., (105-128)/256. }, |
247 |
|
|
{ 0.60, 151/256., (50-128)/256., (146-128)/256. }, |
248 |
|
|
{ 0.70, 191/256., (63-128)/256., (178-128)/256. }, |
249 |
|
|
{ 1, 98/256., (80-128)/256., (221-128)/256. }}, |
250 |
|
|
[COOL] = { |
251 |
|
|
{ 0, 0, 0, 0 }, |
252 |
|
|
{ .15, 0, .5, -.5 }, |
253 |
|
|
{ 1, 1, -.5, .5 }}, |
254 |
|
|
[MAGMA] = { |
255 |
|
|
{ 0, 0, 0, 0 }, |
256 |
|
|
{ 0.10, 23/256., (175-128)/256., (120-128)/256. }, |
257 |
|
|
{ 0.23, 43/256., (158-128)/256., (144-128)/256. }, |
258 |
|
|
{ 0.35, 85/256., (138-128)/256., (179-128)/256. }, |
259 |
|
|
{ 0.48, 96/256., (128-128)/256., (189-128)/256. }, |
260 |
|
|
{ 0.64, 128/256., (103-128)/256., (214-128)/256. }, |
261 |
|
|
{ 0.92, 205/256., (80-128)/256., (152-128)/256. }, |
262 |
|
|
{ 1, 1, 0, 0 }}, |
263 |
|
|
[GREEN] = { |
264 |
|
|
{ 0, 0, 0, 0 }, |
265 |
|
|
{ .75, .5, 0, -.5 }, |
266 |
|
|
{ 1, 1, 0, 0 }}, |
267 |
|
|
[VIRIDIS] = { |
268 |
|
|
{ 0, 0, 0, 0 }, |
269 |
|
|
{ 0.10, 0x39/255., (0x9D -128)/255., (0x8F -128)/255. }, |
270 |
|
|
{ 0.23, 0x5C/255., (0x9A -128)/255., (0x68 -128)/255. }, |
271 |
|
|
{ 0.35, 0x69/255., (0x93 -128)/255., (0x57 -128)/255. }, |
272 |
|
|
{ 0.48, 0x76/255., (0x88 -128)/255., (0x4B -128)/255. }, |
273 |
|
|
{ 0.64, 0x8A/255., (0x72 -128)/255., (0x4F -128)/255. }, |
274 |
|
|
{ 0.80, 0xA3/255., (0x50 -128)/255., (0x66 -128)/255. }, |
275 |
|
|
{ 1, 0xCC/255., (0x2F -128)/255., (0x87 -128)/255. }}, |
276 |
|
|
[PLASMA] = { |
277 |
|
|
{ 0, 0, 0, 0 }, |
278 |
|
|
{ 0.10, 0x27/255., (0xC2 -128)/255., (0x82 -128)/255. }, |
279 |
|
|
{ 0.58, 0x5B/255., (0x9A -128)/255., (0xAE -128)/255. }, |
280 |
|
|
{ 0.70, 0x89/255., (0x44 -128)/255., (0xAB -128)/255. }, |
281 |
|
|
{ 0.80, 0xB4/255., (0x2B -128)/255., (0x9E -128)/255. }, |
282 |
|
|
{ 0.91, 0xD2/255., (0x38 -128)/255., (0x92 -128)/255. }, |
283 |
|
|
{ 1, 1, 0, 0. }}, |
284 |
|
|
[CIVIDIS] = { |
285 |
|
|
{ 0, 0, 0, 0 }, |
286 |
|
|
{ 0.20, 0x28/255., (0x98 -128)/255., (0x6F -128)/255. }, |
287 |
|
|
{ 0.50, 0x48/255., (0x95 -128)/255., (0x74 -128)/255. }, |
288 |
|
|
{ 0.63, 0x69/255., (0x84 -128)/255., (0x7F -128)/255. }, |
289 |
|
|
{ 0.76, 0x89/255., (0x75 -128)/255., (0x84 -128)/255. }, |
290 |
|
|
{ 0.90, 0xCE/255., (0x35 -128)/255., (0x95 -128)/255. }, |
291 |
|
|
{ 1, 1, 0, 0. }}, |
292 |
|
|
[TERRAIN] = { |
293 |
|
|
{ 0, 0, 0, 0 }, |
294 |
|
|
{ 0.15, 0, .5, 0 }, |
295 |
|
|
{ 0.60, 1, -.5, -.5 }, |
296 |
|
|
{ 0.85, 1, -.5, .5 }, |
297 |
|
|
{ 1, 1, 0, 0 }}, |
298 |
|
|
}; |
299 |
|
|
|
300 |
|
|
static av_cold void uninit(AVFilterContext *ctx) |
301 |
|
|
{ |
302 |
|
|
ShowSpectrumContext *s = ctx->priv; |
303 |
|
|
int i; |
304 |
|
|
|
305 |
|
|
av_freep(&s->combine_buffer); |
306 |
|
|
if (s->fft) { |
307 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
308 |
|
|
av_fft_end(s->fft[i]); |
309 |
|
|
} |
310 |
|
|
av_freep(&s->fft); |
311 |
|
|
if (s->ifft) { |
312 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
313 |
|
|
av_fft_end(s->ifft[i]); |
314 |
|
|
} |
315 |
|
|
av_freep(&s->ifft); |
316 |
|
|
if (s->fft_data) { |
317 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
318 |
|
|
av_freep(&s->fft_data[i]); |
319 |
|
|
} |
320 |
|
|
av_freep(&s->fft_data); |
321 |
|
|
if (s->fft_scratch) { |
322 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
323 |
|
|
av_freep(&s->fft_scratch[i]); |
324 |
|
|
} |
325 |
|
|
av_freep(&s->fft_scratch); |
326 |
|
|
if (s->color_buffer) { |
327 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
328 |
|
|
av_freep(&s->color_buffer[i]); |
329 |
|
|
} |
330 |
|
|
av_freep(&s->color_buffer); |
331 |
|
|
av_freep(&s->window_func_lut); |
332 |
|
|
if (s->magnitudes) { |
333 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
334 |
|
|
av_freep(&s->magnitudes[i]); |
335 |
|
|
} |
336 |
|
|
av_freep(&s->magnitudes); |
337 |
|
|
av_frame_free(&s->outpicref); |
338 |
|
|
av_audio_fifo_free(s->fifo); |
339 |
|
|
if (s->phases) { |
340 |
|
|
for (i = 0; i < s->nb_display_channels; i++) |
341 |
|
|
av_freep(&s->phases[i]); |
342 |
|
|
} |
343 |
|
|
av_freep(&s->phases); |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
static int query_formats(AVFilterContext *ctx) |
347 |
|
|
{ |
348 |
|
|
AVFilterFormats *formats = NULL; |
349 |
|
|
AVFilterChannelLayouts *layouts = NULL; |
350 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
351 |
|
|
AVFilterLink *outlink = ctx->outputs[0]; |
352 |
|
|
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE }; |
353 |
|
|
static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE }; |
354 |
|
|
int ret; |
355 |
|
|
|
356 |
|
|
/* set input audio formats */ |
357 |
|
|
formats = ff_make_format_list(sample_fmts); |
358 |
|
|
if ((ret = ff_formats_ref(formats, &inlink->out_formats)) < 0) |
359 |
|
|
return ret; |
360 |
|
|
|
361 |
|
|
layouts = ff_all_channel_layouts(); |
362 |
|
|
if ((ret = ff_channel_layouts_ref(layouts, &inlink->out_channel_layouts)) < 0) |
363 |
|
|
return ret; |
364 |
|
|
|
365 |
|
|
formats = ff_all_samplerates(); |
366 |
|
|
if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0) |
367 |
|
|
return ret; |
368 |
|
|
|
369 |
|
|
/* set output video format */ |
370 |
|
|
formats = ff_make_format_list(pix_fmts); |
371 |
|
|
if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0) |
372 |
|
|
return ret; |
373 |
|
|
|
374 |
|
|
return 0; |
375 |
|
|
} |
376 |
|
|
|
377 |
|
|
static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
378 |
|
|
{ |
379 |
|
|
ShowSpectrumContext *s = ctx->priv; |
380 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
381 |
|
|
const float *window_func_lut = s->window_func_lut; |
382 |
|
|
AVFrame *fin = arg; |
383 |
|
|
const int ch = jobnr; |
384 |
|
|
int n; |
385 |
|
|
|
386 |
|
|
/* fill FFT input with the number of samples available */ |
387 |
|
|
const float *p = (float *)fin->extended_data[ch]; |
388 |
|
|
|
389 |
|
|
for (n = 0; n < s->win_size; n++) { |
390 |
|
|
s->fft_data[ch][n].re = p[n] * window_func_lut[n]; |
391 |
|
|
s->fft_data[ch][n].im = 0; |
392 |
|
|
} |
393 |
|
|
|
394 |
|
|
if (s->stop) { |
395 |
|
|
float theta, phi, psi, a, b, S, c; |
396 |
|
|
FFTComplex *g = s->fft_data[ch]; |
397 |
|
|
FFTComplex *h = s->fft_scratch[ch]; |
398 |
|
|
int L = s->buf_size; |
399 |
|
|
int N = s->win_size; |
400 |
|
|
int M = s->win_size / 2; |
401 |
|
|
|
402 |
|
|
phi = 2.f * M_PI * (s->stop - s->start) / (float)inlink->sample_rate / (M - 1); |
403 |
|
|
theta = 2.f * M_PI * s->start / (float)inlink->sample_rate; |
404 |
|
|
|
405 |
|
|
for (int n = 0; n < M; n++) { |
406 |
|
|
h[n].re = cosf(n * n / 2.f * phi); |
407 |
|
|
h[n].im = sinf(n * n / 2.f * phi); |
408 |
|
|
} |
409 |
|
|
|
410 |
|
|
for (int n = M; n < L; n++) { |
411 |
|
|
h[n].re = 0.f; |
412 |
|
|
h[n].im = 0.f; |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
for (int n = L - N; n < L; n++) { |
416 |
|
|
h[n].re = cosf((L - n) * (L - n) / 2.f * phi); |
417 |
|
|
h[n].im = sinf((L - n) * (L - n) / 2.f * phi); |
418 |
|
|
} |
419 |
|
|
|
420 |
|
|
for (int n = 0; n < N; n++) { |
421 |
|
|
g[n].re = s->fft_data[ch][n].re; |
422 |
|
|
g[n].im = s->fft_data[ch][n].im; |
423 |
|
|
} |
424 |
|
|
|
425 |
|
|
for (int n = N; n < L; n++) { |
426 |
|
|
g[n].re = 0.f; |
427 |
|
|
g[n].im = 0.f; |
428 |
|
|
} |
429 |
|
|
|
430 |
|
|
for (int n = 0; n < N; n++) { |
431 |
|
|
psi = n * theta + n * n / 2.f * phi; |
432 |
|
|
c = cosf(psi); |
433 |
|
|
S = -sinf(psi); |
434 |
|
|
a = c * g[n].re - S * g[n].im; |
435 |
|
|
b = S * g[n].re + c * g[n].im; |
436 |
|
|
g[n].re = a; |
437 |
|
|
g[n].im = b; |
438 |
|
|
} |
439 |
|
|
|
440 |
|
|
av_fft_permute(s->fft[ch], h); |
441 |
|
|
av_fft_calc(s->fft[ch], h); |
442 |
|
|
|
443 |
|
|
av_fft_permute(s->fft[ch], g); |
444 |
|
|
av_fft_calc(s->fft[ch], g); |
445 |
|
|
|
446 |
|
|
for (int n = 0; n < L; n++) { |
447 |
|
|
c = g[n].re; |
448 |
|
|
S = g[n].im; |
449 |
|
|
a = c * h[n].re - S * h[n].im; |
450 |
|
|
b = S * h[n].re + c * h[n].im; |
451 |
|
|
|
452 |
|
|
g[n].re = a / L; |
453 |
|
|
g[n].im = b / L; |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
av_fft_permute(s->ifft[ch], g); |
457 |
|
|
av_fft_calc(s->ifft[ch], g); |
458 |
|
|
|
459 |
|
|
for (int k = 0; k < M; k++) { |
460 |
|
|
psi = k * k / 2.f * phi; |
461 |
|
|
c = cosf(psi); |
462 |
|
|
S = -sinf(psi); |
463 |
|
|
a = c * g[k].re - S * g[k].im; |
464 |
|
|
b = S * g[k].re + c * g[k].im; |
465 |
|
|
s->fft_data[ch][k].re = a; |
466 |
|
|
s->fft_data[ch][k].im = b; |
467 |
|
|
} |
468 |
|
|
} else { |
469 |
|
|
/* run FFT on each samples set */ |
470 |
|
|
av_fft_permute(s->fft[ch], s->fft_data[ch]); |
471 |
|
|
av_fft_calc(s->fft[ch], s->fft_data[ch]); |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
return 0; |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o) |
478 |
|
|
{ |
479 |
|
|
const uint8_t *font; |
480 |
|
|
int font_height; |
481 |
|
|
int i; |
482 |
|
|
|
483 |
|
|
font = avpriv_cga_font, font_height = 8; |
484 |
|
|
|
485 |
|
|
for (i = 0; txt[i]; i++) { |
486 |
|
|
int char_y, mask; |
487 |
|
|
|
488 |
|
|
if (o) { |
489 |
|
|
for (char_y = font_height - 1; char_y >= 0; char_y--) { |
490 |
|
|
uint8_t *p = pic->data[0] + (y + i * 10) * pic->linesize[0] + x; |
491 |
|
|
for (mask = 0x80; mask; mask >>= 1) { |
492 |
|
|
if (font[txt[i] * font_height + font_height - 1 - char_y] & mask) |
493 |
|
|
p[char_y] = ~p[char_y]; |
494 |
|
|
p += pic->linesize[0]; |
495 |
|
|
} |
496 |
|
|
} |
497 |
|
|
} else { |
498 |
|
|
uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8); |
499 |
|
|
for (char_y = 0; char_y < font_height; char_y++) { |
500 |
|
|
for (mask = 0x80; mask; mask >>= 1) { |
501 |
|
|
if (font[txt[i] * font_height + char_y] & mask) |
502 |
|
|
*p = ~(*p); |
503 |
|
|
p++; |
504 |
|
|
} |
505 |
|
|
p += pic->linesize[0] - 8; |
506 |
|
|
} |
507 |
|
|
} |
508 |
|
|
} |
509 |
|
|
} |
510 |
|
|
|
511 |
|
|
static void color_range(ShowSpectrumContext *s, int ch, |
512 |
|
|
float *yf, float *uf, float *vf) |
513 |
|
|
{ |
514 |
|
|
switch (s->mode) { |
515 |
|
|
case COMBINED: |
516 |
|
|
// reduce range by channel count |
517 |
|
|
*yf = 256.0f / s->nb_display_channels; |
518 |
|
|
switch (s->color_mode) { |
519 |
|
|
case RAINBOW: |
520 |
|
|
case MORELAND: |
521 |
|
|
case NEBULAE: |
522 |
|
|
case FIRE: |
523 |
|
|
case FIERY: |
524 |
|
|
case FRUIT: |
525 |
|
|
case COOL: |
526 |
|
|
case GREEN: |
527 |
|
|
case VIRIDIS: |
528 |
|
|
case PLASMA: |
529 |
|
|
case CIVIDIS: |
530 |
|
|
case TERRAIN: |
531 |
|
|
case MAGMA: |
532 |
|
|
case INTENSITY: |
533 |
|
|
*uf = *yf; |
534 |
|
|
*vf = *yf; |
535 |
|
|
break; |
536 |
|
|
case CHANNEL: |
537 |
|
|
/* adjust saturation for mixed UV coloring */ |
538 |
|
|
/* this factor is correct for infinite channels, an approximation otherwise */ |
539 |
|
|
*uf = *yf * M_PI; |
540 |
|
|
*vf = *yf * M_PI; |
541 |
|
|
break; |
542 |
|
|
default: |
543 |
|
|
av_assert0(0); |
544 |
|
|
} |
545 |
|
|
break; |
546 |
|
|
case SEPARATE: |
547 |
|
|
// full range |
548 |
|
|
*yf = 256.0f; |
549 |
|
|
*uf = 256.0f; |
550 |
|
|
*vf = 256.0f; |
551 |
|
|
break; |
552 |
|
|
default: |
553 |
|
|
av_assert0(0); |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
if (s->color_mode == CHANNEL) { |
557 |
|
|
if (s->nb_display_channels > 1) { |
558 |
|
|
*uf *= 0.5f * sinf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation); |
559 |
|
|
*vf *= 0.5f * cosf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation); |
560 |
|
|
} else { |
561 |
|
|
*uf *= 0.5f * sinf(M_PI * s->rotation); |
562 |
|
|
*vf *= 0.5f * cosf(M_PI * s->rotation + M_PI_2); |
563 |
|
|
} |
564 |
|
|
} else { |
565 |
|
|
*uf += *uf * sinf(M_PI * s->rotation); |
566 |
|
|
*vf += *vf * cosf(M_PI * s->rotation + M_PI_2); |
567 |
|
|
} |
568 |
|
|
|
569 |
|
|
*uf *= s->saturation; |
570 |
|
|
*vf *= s->saturation; |
571 |
|
|
} |
572 |
|
|
|
573 |
|
|
static void pick_color(ShowSpectrumContext *s, |
574 |
|
|
float yf, float uf, float vf, |
575 |
|
|
float a, float *out) |
576 |
|
|
{ |
577 |
|
|
if (s->color_mode > CHANNEL) { |
578 |
|
|
const int cm = s->color_mode; |
579 |
|
|
float y, u, v; |
580 |
|
|
int i; |
581 |
|
|
|
582 |
|
|
for (i = 1; i < FF_ARRAY_ELEMS(color_table[cm]) - 1; i++) |
583 |
|
|
if (color_table[cm][i].a >= a) |
584 |
|
|
break; |
585 |
|
|
// i now is the first item >= the color |
586 |
|
|
// now we know to interpolate between item i - 1 and i |
587 |
|
|
if (a <= color_table[cm][i - 1].a) { |
588 |
|
|
y = color_table[cm][i - 1].y; |
589 |
|
|
u = color_table[cm][i - 1].u; |
590 |
|
|
v = color_table[cm][i - 1].v; |
591 |
|
|
} else if (a >= color_table[cm][i].a) { |
592 |
|
|
y = color_table[cm][i].y; |
593 |
|
|
u = color_table[cm][i].u; |
594 |
|
|
v = color_table[cm][i].v; |
595 |
|
|
} else { |
596 |
|
|
float start = color_table[cm][i - 1].a; |
597 |
|
|
float end = color_table[cm][i].a; |
598 |
|
|
float lerpfrac = (a - start) / (end - start); |
599 |
|
|
y = color_table[cm][i - 1].y * (1.0f - lerpfrac) |
600 |
|
|
+ color_table[cm][i].y * lerpfrac; |
601 |
|
|
u = color_table[cm][i - 1].u * (1.0f - lerpfrac) |
602 |
|
|
+ color_table[cm][i].u * lerpfrac; |
603 |
|
|
v = color_table[cm][i - 1].v * (1.0f - lerpfrac) |
604 |
|
|
+ color_table[cm][i].v * lerpfrac; |
605 |
|
|
} |
606 |
|
|
|
607 |
|
|
out[0] = y * yf; |
608 |
|
|
out[1] = u * uf; |
609 |
|
|
out[2] = v * vf; |
610 |
|
|
} else { |
611 |
|
|
out[0] = a * yf; |
612 |
|
|
out[1] = a * uf; |
613 |
|
|
out[2] = a * vf; |
614 |
|
|
} |
615 |
|
|
} |
616 |
|
|
|
617 |
|
|
static char *get_time(AVFilterContext *ctx, float seconds, int x) |
618 |
|
|
{ |
619 |
|
|
char *units; |
620 |
|
|
|
621 |
|
|
if (x == 0) |
622 |
|
|
units = av_asprintf("0"); |
623 |
|
|
else if (log10(seconds) > 6) |
624 |
|
|
units = av_asprintf("%.2fh", seconds / (60 * 60)); |
625 |
|
|
else if (log10(seconds) > 3) |
626 |
|
|
units = av_asprintf("%.2fm", seconds / 60); |
627 |
|
|
else |
628 |
|
|
units = av_asprintf("%.2fs", seconds); |
629 |
|
|
return units; |
630 |
|
|
} |
631 |
|
|
|
632 |
|
|
static float log_scale(const float value, const float min, const float max) |
633 |
|
|
{ |
634 |
|
|
if (value < min) |
635 |
|
|
return min; |
636 |
|
|
if (value > max) |
637 |
|
|
return max; |
638 |
|
|
|
639 |
|
|
{ |
640 |
|
|
const float b = logf(max / min) / (max - min); |
641 |
|
|
const float a = max / expf(max * b); |
642 |
|
|
|
643 |
|
|
return expf(value * b) * a; |
644 |
|
|
} |
645 |
|
|
} |
646 |
|
|
|
647 |
|
|
static float get_log_hz(const int bin, const int num_bins, const float sample_rate) |
648 |
|
|
{ |
649 |
|
|
const float max_freq = sample_rate / 2; |
650 |
|
|
const float hz_per_bin = max_freq / num_bins; |
651 |
|
|
const float freq = hz_per_bin * bin; |
652 |
|
|
const float scaled_freq = log_scale(freq + 1, 21, max_freq) - 1; |
653 |
|
|
|
654 |
|
|
return num_bins * scaled_freq / max_freq; |
655 |
|
|
} |
656 |
|
|
|
657 |
|
|
static float inv_log_scale(const float value, const float min, const float max) |
658 |
|
|
{ |
659 |
|
|
if (value < min) |
660 |
|
|
return min; |
661 |
|
|
if (value > max) |
662 |
|
|
return max; |
663 |
|
|
|
664 |
|
|
{ |
665 |
|
|
const float b = logf(max / min) / (max - min); |
666 |
|
|
const float a = max / expf(max * b); |
667 |
|
|
|
668 |
|
|
return logf(value / a) / b; |
669 |
|
|
} |
670 |
|
|
} |
671 |
|
|
|
672 |
|
|
static float bin_pos(const int bin, const int num_bins, const float sample_rate) |
673 |
|
|
{ |
674 |
|
|
const float max_freq = sample_rate / 2; |
675 |
|
|
const float hz_per_bin = max_freq / num_bins; |
676 |
|
|
const float freq = hz_per_bin * bin; |
677 |
|
|
const float scaled_freq = inv_log_scale(freq + 1, 21, max_freq) - 1; |
678 |
|
|
|
679 |
|
|
return num_bins * scaled_freq / max_freq; |
680 |
|
|
} |
681 |
|
|
|
682 |
|
|
static int draw_legend(AVFilterContext *ctx, int samples) |
683 |
|
|
{ |
684 |
|
|
ShowSpectrumContext *s = ctx->priv; |
685 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
686 |
|
|
AVFilterLink *outlink = ctx->outputs[0]; |
687 |
|
|
int ch, y, x = 0, sz = s->orientation == VERTICAL ? s->w : s->h; |
688 |
|
|
int multi = (s->mode == SEPARATE && s->color_mode == CHANNEL); |
689 |
|
|
float spp = samples / (float)sz; |
690 |
|
|
char *text; |
691 |
|
|
uint8_t *dst; |
692 |
|
|
char chlayout_str[128]; |
693 |
|
|
|
694 |
|
|
av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), inlink->channels, |
695 |
|
|
inlink->channel_layout); |
696 |
|
|
|
697 |
|
|
text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str); |
698 |
|
|
if (!text) |
699 |
|
|
return AVERROR(ENOMEM); |
700 |
|
|
|
701 |
|
|
drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0); |
702 |
|
|
drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0); |
703 |
|
|
av_freep(&text); |
704 |
|
|
if (s->stop) { |
705 |
|
|
text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop); |
706 |
|
|
if (!text) |
707 |
|
|
return AVERROR(ENOMEM); |
708 |
|
|
drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0); |
709 |
|
|
av_freep(&text); |
710 |
|
|
} |
711 |
|
|
|
712 |
|
|
dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1; |
713 |
|
|
for (x = 0; x < s->w + 1; x++) |
714 |
|
|
dst[x] = 200; |
715 |
|
|
dst = s->outpicref->data[0] + (s->start_y + s->h) * s->outpicref->linesize[0] + s->start_x - 1; |
716 |
|
|
for (x = 0; x < s->w + 1; x++) |
717 |
|
|
dst[x] = 200; |
718 |
|
|
for (y = 0; y < s->h + 2; y++) { |
719 |
|
|
dst = s->outpicref->data[0] + (y + s->start_y - 1) * s->outpicref->linesize[0]; |
720 |
|
|
dst[s->start_x - 1] = 200; |
721 |
|
|
dst[s->start_x + s->w] = 200; |
722 |
|
|
} |
723 |
|
|
if (s->orientation == VERTICAL) { |
724 |
|
|
int h = s->mode == SEPARATE ? s->h / s->nb_display_channels : s->h; |
725 |
|
|
int hh = s->mode == SEPARATE ? -(s->h % s->nb_display_channels) + 1 : 1; |
726 |
|
|
for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) { |
727 |
|
|
for (y = 0; y < h; y += 20) { |
728 |
|
|
dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0]; |
729 |
|
|
dst[s->start_x - 2] = 200; |
730 |
|
|
dst[s->start_x + s->w + 1] = 200; |
731 |
|
|
} |
732 |
|
|
for (y = 0; y < h; y += 40) { |
733 |
|
|
dst = s->outpicref->data[0] + (s->start_y + h * (ch + 1) - y - hh) * s->outpicref->linesize[0]; |
734 |
|
|
dst[s->start_x - 3] = 200; |
735 |
|
|
dst[s->start_x + s->w + 2] = 200; |
736 |
|
|
} |
737 |
|
|
dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x; |
738 |
|
|
for (x = 0; x < s->w; x+=40) |
739 |
|
|
dst[x] = 200; |
740 |
|
|
dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x; |
741 |
|
|
for (x = 0; x < s->w; x+=80) |
742 |
|
|
dst[x] = 200; |
743 |
|
|
dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x; |
744 |
|
|
for (x = 0; x < s->w; x+=40) { |
745 |
|
|
dst[x] = 200; |
746 |
|
|
} |
747 |
|
|
dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x; |
748 |
|
|
for (x = 0; x < s->w; x+=80) { |
749 |
|
|
dst[x] = 200; |
750 |
|
|
} |
751 |
|
|
for (y = 0; y < h; y += 40) { |
752 |
|
|
float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2; |
753 |
|
|
float bin = s->fscale == F_LINEAR ? y : get_log_hz(y, h, inlink->sample_rate); |
754 |
|
|
float hertz = s->start + bin * range / (float)(1 << (int)ceil(log2(h))); |
755 |
|
|
char *units; |
756 |
|
|
|
757 |
|
|
if (hertz == 0) |
758 |
|
|
units = av_asprintf("DC"); |
759 |
|
|
else |
760 |
|
|
units = av_asprintf("%.2f", hertz); |
761 |
|
|
if (!units) |
762 |
|
|
return AVERROR(ENOMEM); |
763 |
|
|
|
764 |
|
|
drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, h * (ch + 1) + s->start_y - y - 4 - hh, units, 0); |
765 |
|
|
av_free(units); |
766 |
|
|
} |
767 |
|
|
} |
768 |
|
|
|
769 |
|
|
for (x = 0; x < s->w && s->single_pic; x+=80) { |
770 |
|
|
float seconds = x * spp / inlink->sample_rate; |
771 |
|
|
char *units = get_time(ctx, seconds, x); |
772 |
|
|
if (!units) |
773 |
|
|
return AVERROR(ENOMEM); |
774 |
|
|
|
775 |
|
|
drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->h + s->start_y + 6, units, 0); |
776 |
|
|
drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->start_y - 12, units, 0); |
777 |
|
|
av_free(units); |
778 |
|
|
} |
779 |
|
|
|
780 |
|
|
drawtext(s->outpicref, outlink->w / 2 - 4 * 4, outlink->h - s->start_y / 2, "TIME", 0); |
781 |
|
|
drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 14 * 4, "FREQUENCY (Hz)", 1); |
782 |
|
|
} else { |
783 |
|
|
int w = s->mode == SEPARATE ? s->w / s->nb_display_channels : s->w; |
784 |
|
|
for (y = 0; y < s->h; y += 20) { |
785 |
|
|
dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0]; |
786 |
|
|
dst[s->start_x - 2] = 200; |
787 |
|
|
dst[s->start_x + s->w + 1] = 200; |
788 |
|
|
} |
789 |
|
|
for (y = 0; y < s->h; y += 40) { |
790 |
|
|
dst = s->outpicref->data[0] + (s->start_y + y) * s->outpicref->linesize[0]; |
791 |
|
|
dst[s->start_x - 3] = 200; |
792 |
|
|
dst[s->start_x + s->w + 2] = 200; |
793 |
|
|
} |
794 |
|
|
for (ch = 0; ch < (s->mode == SEPARATE ? s->nb_display_channels : 1); ch++) { |
795 |
|
|
dst = s->outpicref->data[0] + (s->start_y - 2) * s->outpicref->linesize[0] + s->start_x + w * ch; |
796 |
|
|
for (x = 0; x < w; x+=40) |
797 |
|
|
dst[x] = 200; |
798 |
|
|
dst = s->outpicref->data[0] + (s->start_y - 3) * s->outpicref->linesize[0] + s->start_x + w * ch; |
799 |
|
|
for (x = 0; x < w; x+=80) |
800 |
|
|
dst[x] = 200; |
801 |
|
|
dst = s->outpicref->data[0] + (s->h + s->start_y + 1) * s->outpicref->linesize[0] + s->start_x + w * ch; |
802 |
|
|
for (x = 0; x < w; x+=40) { |
803 |
|
|
dst[x] = 200; |
804 |
|
|
} |
805 |
|
|
dst = s->outpicref->data[0] + (s->h + s->start_y + 2) * s->outpicref->linesize[0] + s->start_x + w * ch; |
806 |
|
|
for (x = 0; x < w; x+=80) { |
807 |
|
|
dst[x] = 200; |
808 |
|
|
} |
809 |
|
|
for (x = 0; x < w - 79; x += 80) { |
810 |
|
|
float range = s->stop ? s->stop - s->start : inlink->sample_rate / 2; |
811 |
|
|
float bin = s->fscale == F_LINEAR ? x : get_log_hz(x, w, inlink->sample_rate); |
812 |
|
|
float hertz = s->start + bin * range / (float)(1 << (int)ceil(log2(w))); |
813 |
|
|
char *units; |
814 |
|
|
|
815 |
|
|
if (hertz == 0) |
816 |
|
|
units = av_asprintf("DC"); |
817 |
|
|
else |
818 |
|
|
units = av_asprintf("%.2f", hertz); |
819 |
|
|
if (!units) |
820 |
|
|
return AVERROR(ENOMEM); |
821 |
|
|
|
822 |
|
|
drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->start_y - 12, units, 0); |
823 |
|
|
drawtext(s->outpicref, s->start_x - 4 * strlen(units) + x + w * ch, s->h + s->start_y + 6, units, 0); |
824 |
|
|
av_free(units); |
825 |
|
|
} |
826 |
|
|
} |
827 |
|
|
for (y = 0; y < s->h && s->single_pic; y+=40) { |
828 |
|
|
float seconds = y * spp / inlink->sample_rate; |
829 |
|
|
char *units = get_time(ctx, seconds, x); |
830 |
|
|
if (!units) |
831 |
|
|
return AVERROR(ENOMEM); |
832 |
|
|
|
833 |
|
|
drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, s->start_y + y - 4, units, 0); |
834 |
|
|
av_free(units); |
835 |
|
|
} |
836 |
|
|
drawtext(s->outpicref, s->start_x / 7, outlink->h / 2 - 4 * 4, "TIME", 1); |
837 |
|
|
drawtext(s->outpicref, outlink->w / 2 - 14 * 4, outlink->h - s->start_y / 2, "FREQUENCY (Hz)", 0); |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
for (ch = 0; ch < (multi ? s->nb_display_channels : 1); ch++) { |
841 |
|
|
int h = multi ? s->h / s->nb_display_channels : s->h; |
842 |
|
|
|
843 |
|
|
for (y = 0; y < h; y++) { |
844 |
|
|
float out[3] = { 0., 127.5, 127.5}; |
845 |
|
|
int chn; |
846 |
|
|
|
847 |
|
|
for (chn = 0; chn < (s->mode == SEPARATE ? 1 : s->nb_display_channels); chn++) { |
848 |
|
|
float yf, uf, vf; |
849 |
|
|
int channel = (multi) ? s->nb_display_channels - ch - 1 : chn; |
850 |
|
|
float lout[3]; |
851 |
|
|
|
852 |
|
|
color_range(s, channel, &yf, &uf, &vf); |
853 |
|
|
pick_color(s, yf, uf, vf, y / (float)h, lout); |
854 |
|
|
out[0] += lout[0]; |
855 |
|
|
out[1] += lout[1]; |
856 |
|
|
out[2] += lout[2]; |
857 |
|
|
} |
858 |
|
|
memset(s->outpicref->data[0]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[0] + s->w + s->start_x + 20, av_clip_uint8(out[0]), 10); |
859 |
|
|
memset(s->outpicref->data[1]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[1] + s->w + s->start_x + 20, av_clip_uint8(out[1]), 10); |
860 |
|
|
memset(s->outpicref->data[2]+(s->start_y + h * (ch + 1) - y - 1) * s->outpicref->linesize[2] + s->w + s->start_x + 20, av_clip_uint8(out[2]), 10); |
861 |
|
|
} |
862 |
|
|
|
863 |
|
|
for (y = 0; ch == 0 && y < h; y += h / 10) { |
864 |
|
|
float value = 120.f * log10f(1.f - y / (float)h); |
865 |
|
|
char *text; |
866 |
|
|
|
867 |
|
|
if (value < -120) |
868 |
|
|
break; |
869 |
|
|
text = av_asprintf("%.0f dB", value); |
870 |
|
|
if (!text) |
871 |
|
|
continue; |
872 |
|
|
drawtext(s->outpicref, s->w + s->start_x + 35, s->start_y + y - 5, text, 0); |
873 |
|
|
av_free(text); |
874 |
|
|
} |
875 |
|
|
} |
876 |
|
|
|
877 |
|
|
return 0; |
878 |
|
|
} |
879 |
|
|
|
880 |
|
|
static float get_value(AVFilterContext *ctx, int ch, int y) |
881 |
|
|
{ |
882 |
|
|
ShowSpectrumContext *s = ctx->priv; |
883 |
|
|
float *magnitudes = s->magnitudes[ch]; |
884 |
|
|
float *phases = s->phases[ch]; |
885 |
|
|
float a; |
886 |
|
|
|
887 |
|
|
switch (s->data) { |
888 |
|
|
case D_MAGNITUDE: |
889 |
|
|
/* get magnitude */ |
890 |
|
|
a = magnitudes[y]; |
891 |
|
|
break; |
892 |
|
|
case D_PHASE: |
893 |
|
|
/* get phase */ |
894 |
|
|
a = phases[y]; |
895 |
|
|
break; |
896 |
|
|
default: |
897 |
|
|
av_assert0(0); |
898 |
|
|
} |
899 |
|
|
|
900 |
|
|
/* apply scale */ |
901 |
|
|
switch (s->scale) { |
902 |
|
|
case LINEAR: |
903 |
|
|
a = av_clipf(a, 0, 1); |
904 |
|
|
break; |
905 |
|
|
case SQRT: |
906 |
|
|
a = av_clipf(sqrtf(a), 0, 1); |
907 |
|
|
break; |
908 |
|
|
case CBRT: |
909 |
|
|
a = av_clipf(cbrtf(a), 0, 1); |
910 |
|
|
break; |
911 |
|
|
case FOURTHRT: |
912 |
|
|
a = av_clipf(sqrtf(sqrtf(a)), 0, 1); |
913 |
|
|
break; |
914 |
|
|
case FIFTHRT: |
915 |
|
|
a = av_clipf(powf(a, 0.20), 0, 1); |
916 |
|
|
break; |
917 |
|
|
case LOG: |
918 |
|
|
a = 1.f + log10f(av_clipf(a, 1e-6, 1)) / 6.f; // zero = -120dBFS |
919 |
|
|
break; |
920 |
|
|
default: |
921 |
|
|
av_assert0(0); |
922 |
|
|
} |
923 |
|
|
|
924 |
|
|
return a; |
925 |
|
|
} |
926 |
|
|
|
927 |
|
|
static int plot_channel_lin(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
928 |
|
|
{ |
929 |
|
|
ShowSpectrumContext *s = ctx->priv; |
930 |
|
|
const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width; |
931 |
|
|
const int ch = jobnr; |
932 |
|
|
float yf, uf, vf; |
933 |
|
|
int y; |
934 |
|
|
|
935 |
|
|
/* decide color range */ |
936 |
|
|
color_range(s, ch, &yf, &uf, &vf); |
937 |
|
|
|
938 |
|
|
/* draw the channel */ |
939 |
|
|
for (y = 0; y < h; y++) { |
940 |
|
|
int row = (s->mode == COMBINED) ? y : ch * h + y; |
941 |
|
|
float *out = &s->color_buffer[ch][3 * row]; |
942 |
|
|
float a = get_value(ctx, ch, y); |
943 |
|
|
|
944 |
|
|
pick_color(s, yf, uf, vf, a, out); |
945 |
|
|
} |
946 |
|
|
|
947 |
|
|
return 0; |
948 |
|
|
} |
949 |
|
|
|
950 |
|
|
static int plot_channel_log(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
951 |
|
|
{ |
952 |
|
|
ShowSpectrumContext *s = ctx->priv; |
953 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
954 |
|
|
const int h = s->orientation == VERTICAL ? s->channel_height : s->channel_width; |
955 |
|
|
const int ch = jobnr; |
956 |
|
|
float y, yf, uf, vf; |
957 |
|
|
int yy = 0; |
958 |
|
|
|
959 |
|
|
/* decide color range */ |
960 |
|
|
color_range(s, ch, &yf, &uf, &vf); |
961 |
|
|
|
962 |
|
|
/* draw the channel */ |
963 |
|
|
for (y = 0; y < h && yy < h; yy++) { |
964 |
|
|
float pos0 = bin_pos(yy+0, h, inlink->sample_rate); |
965 |
|
|
float pos1 = bin_pos(yy+1, h, inlink->sample_rate); |
966 |
|
|
float delta = pos1 - pos0; |
967 |
|
|
float a0, a1; |
968 |
|
|
|
969 |
|
|
a0 = get_value(ctx, ch, yy+0); |
970 |
|
|
a1 = get_value(ctx, ch, FFMIN(yy+1, h-1)); |
971 |
|
|
for (float j = pos0; j < pos1 && y + j - pos0 < h; j++) { |
972 |
|
|
float row = (s->mode == COMBINED) ? y + j - pos0 : ch * h + y + j - pos0; |
973 |
|
|
float *out = &s->color_buffer[ch][3 * FFMIN(lrintf(row), h-1)]; |
974 |
|
|
float lerpfrac = (j - pos0) / delta; |
975 |
|
|
|
976 |
|
|
pick_color(s, yf, uf, vf, lerpfrac * a1 + (1.f-lerpfrac) * a0, out); |
977 |
|
|
} |
978 |
|
|
y += delta; |
979 |
|
|
} |
980 |
|
|
|
981 |
|
|
return 0; |
982 |
|
|
} |
983 |
|
|
|
984 |
|
|
static int config_output(AVFilterLink *outlink) |
985 |
|
|
{ |
986 |
|
|
AVFilterContext *ctx = outlink->src; |
987 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
988 |
|
|
ShowSpectrumContext *s = ctx->priv; |
989 |
|
|
int i, fft_bits, h, w; |
990 |
|
|
float overlap; |
991 |
|
|
|
992 |
|
|
switch (s->fscale) { |
993 |
|
|
case F_LINEAR: s->plot_channel = plot_channel_lin; break; |
994 |
|
|
case F_LOG: s->plot_channel = plot_channel_log; break; |
995 |
|
|
default: return AVERROR_BUG; |
996 |
|
|
} |
997 |
|
|
|
998 |
|
|
s->stop = FFMIN(s->stop, inlink->sample_rate / 2); |
999 |
|
|
if (s->stop && s->stop <= s->start) { |
1000 |
|
|
av_log(ctx, AV_LOG_ERROR, "Stop frequency should be greater than start.\n"); |
1001 |
|
|
return AVERROR(EINVAL); |
1002 |
|
|
} |
1003 |
|
|
|
1004 |
|
|
if (!strcmp(ctx->filter->name, "showspectrumpic")) |
1005 |
|
|
s->single_pic = 1; |
1006 |
|
|
|
1007 |
|
|
outlink->w = s->w; |
1008 |
|
|
outlink->h = s->h; |
1009 |
|
|
outlink->sample_aspect_ratio = (AVRational){1,1}; |
1010 |
|
|
|
1011 |
|
|
if (s->legend) { |
1012 |
|
|
s->start_x = (log10(inlink->sample_rate) + 1) * 25; |
1013 |
|
|
s->start_y = 64; |
1014 |
|
|
outlink->w += s->start_x * 2; |
1015 |
|
|
outlink->h += s->start_y * 2; |
1016 |
|
|
} |
1017 |
|
|
|
1018 |
|
|
h = (s->mode == COMBINED || s->orientation == HORIZONTAL) ? s->h : s->h / inlink->channels; |
1019 |
|
|
w = (s->mode == COMBINED || s->orientation == VERTICAL) ? s->w : s->w / inlink->channels; |
1020 |
|
|
s->channel_height = h; |
1021 |
|
|
s->channel_width = w; |
1022 |
|
|
|
1023 |
|
|
if (s->orientation == VERTICAL) { |
1024 |
|
|
/* FFT window size (precision) according to the requested output frame height */ |
1025 |
|
|
for (fft_bits = 1; 1 << fft_bits < 2 * h; fft_bits++); |
1026 |
|
|
} else { |
1027 |
|
|
/* FFT window size (precision) according to the requested output frame width */ |
1028 |
|
|
for (fft_bits = 1; 1 << fft_bits < 2 * w; fft_bits++); |
1029 |
|
|
} |
1030 |
|
|
|
1031 |
|
|
s->win_size = 1 << fft_bits; |
1032 |
|
|
s->buf_size = s->win_size << !!s->stop; |
1033 |
|
|
|
1034 |
|
|
if (!s->fft) { |
1035 |
|
|
s->fft = av_calloc(inlink->channels, sizeof(*s->fft)); |
1036 |
|
|
if (!s->fft) |
1037 |
|
|
return AVERROR(ENOMEM); |
1038 |
|
|
} |
1039 |
|
|
|
1040 |
|
|
if (s->stop) { |
1041 |
|
|
if (!s->ifft) { |
1042 |
|
|
s->ifft = av_calloc(inlink->channels, sizeof(*s->ifft)); |
1043 |
|
|
if (!s->ifft) |
1044 |
|
|
return AVERROR(ENOMEM); |
1045 |
|
|
} |
1046 |
|
|
} |
1047 |
|
|
|
1048 |
|
|
/* (re-)configuration if the video output changed (or first init) */ |
1049 |
|
|
if (fft_bits != s->fft_bits) { |
1050 |
|
|
AVFrame *outpicref; |
1051 |
|
|
|
1052 |
|
|
s->fft_bits = fft_bits; |
1053 |
|
|
|
1054 |
|
|
/* FFT buffers: x2 for each (display) channel buffer. |
1055 |
|
|
* Note: we use free and malloc instead of a realloc-like function to |
1056 |
|
|
* make sure the buffer is aligned in memory for the FFT functions. */ |
1057 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1058 |
|
|
if (s->stop) { |
1059 |
|
|
av_fft_end(s->ifft[i]); |
1060 |
|
|
av_freep(&s->fft_scratch[i]); |
1061 |
|
|
} |
1062 |
|
|
av_fft_end(s->fft[i]); |
1063 |
|
|
av_freep(&s->fft_data[i]); |
1064 |
|
|
} |
1065 |
|
|
av_freep(&s->fft_data); |
1066 |
|
|
|
1067 |
|
|
s->nb_display_channels = inlink->channels; |
1068 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1069 |
|
|
s->fft[i] = av_fft_init(fft_bits + !!s->stop, 0); |
1070 |
|
|
if (s->stop) { |
1071 |
|
|
s->ifft[i] = av_fft_init(fft_bits + !!s->stop, 1); |
1072 |
|
|
if (!s->ifft[i]) { |
1073 |
|
|
av_log(ctx, AV_LOG_ERROR, "Unable to create Inverse FFT context. " |
1074 |
|
|
"The window size might be too high.\n"); |
1075 |
|
|
return AVERROR(EINVAL); |
1076 |
|
|
} |
1077 |
|
|
} |
1078 |
|
|
if (!s->fft[i]) { |
1079 |
|
|
av_log(ctx, AV_LOG_ERROR, "Unable to create FFT context. " |
1080 |
|
|
"The window size might be too high.\n"); |
1081 |
|
|
return AVERROR(EINVAL); |
1082 |
|
|
} |
1083 |
|
|
} |
1084 |
|
|
|
1085 |
|
|
s->magnitudes = av_calloc(s->nb_display_channels, sizeof(*s->magnitudes)); |
1086 |
|
|
if (!s->magnitudes) |
1087 |
|
|
return AVERROR(ENOMEM); |
1088 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1089 |
|
|
s->magnitudes[i] = av_calloc(s->orientation == VERTICAL ? s->h : s->w, sizeof(**s->magnitudes)); |
1090 |
|
|
if (!s->magnitudes[i]) |
1091 |
|
|
return AVERROR(ENOMEM); |
1092 |
|
|
} |
1093 |
|
|
|
1094 |
|
|
s->phases = av_calloc(s->nb_display_channels, sizeof(*s->phases)); |
1095 |
|
|
if (!s->phases) |
1096 |
|
|
return AVERROR(ENOMEM); |
1097 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1098 |
|
|
s->phases[i] = av_calloc(s->orientation == VERTICAL ? s->h : s->w, sizeof(**s->phases)); |
1099 |
|
|
if (!s->phases[i]) |
1100 |
|
|
return AVERROR(ENOMEM); |
1101 |
|
|
} |
1102 |
|
|
|
1103 |
|
|
av_freep(&s->color_buffer); |
1104 |
|
|
s->color_buffer = av_calloc(s->nb_display_channels, sizeof(*s->color_buffer)); |
1105 |
|
|
if (!s->color_buffer) |
1106 |
|
|
return AVERROR(ENOMEM); |
1107 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1108 |
|
|
s->color_buffer[i] = av_calloc(s->orientation == VERTICAL ? s->h * 3 : s->w * 3, sizeof(**s->color_buffer)); |
1109 |
|
|
if (!s->color_buffer[i]) |
1110 |
|
|
return AVERROR(ENOMEM); |
1111 |
|
|
} |
1112 |
|
|
|
1113 |
|
|
s->fft_data = av_calloc(s->nb_display_channels, sizeof(*s->fft_data)); |
1114 |
|
|
if (!s->fft_data) |
1115 |
|
|
return AVERROR(ENOMEM); |
1116 |
|
|
s->fft_scratch = av_calloc(s->nb_display_channels, sizeof(*s->fft_scratch)); |
1117 |
|
|
if (!s->fft_scratch) |
1118 |
|
|
return AVERROR(ENOMEM); |
1119 |
|
|
for (i = 0; i < s->nb_display_channels; i++) { |
1120 |
|
|
s->fft_data[i] = av_calloc(s->buf_size, sizeof(**s->fft_data)); |
1121 |
|
|
if (!s->fft_data[i]) |
1122 |
|
|
return AVERROR(ENOMEM); |
1123 |
|
|
|
1124 |
|
|
s->fft_scratch[i] = av_calloc(s->buf_size, sizeof(**s->fft_scratch)); |
1125 |
|
|
if (!s->fft_scratch[i]) |
1126 |
|
|
return AVERROR(ENOMEM); |
1127 |
|
|
} |
1128 |
|
|
|
1129 |
|
|
/* pre-calc windowing function */ |
1130 |
|
|
s->window_func_lut = |
1131 |
|
|
av_realloc_f(s->window_func_lut, s->win_size, |
1132 |
|
|
sizeof(*s->window_func_lut)); |
1133 |
|
|
if (!s->window_func_lut) |
1134 |
|
|
return AVERROR(ENOMEM); |
1135 |
|
|
generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap); |
1136 |
|
|
if (s->overlap == 1) |
1137 |
|
|
s->overlap = overlap; |
1138 |
|
|
s->hop_size = (1.f - s->overlap) * s->win_size; |
1139 |
|
|
if (s->hop_size < 1) { |
1140 |
|
|
av_log(ctx, AV_LOG_ERROR, "overlap %f too big\n", s->overlap); |
1141 |
|
|
return AVERROR(EINVAL); |
1142 |
|
|
} |
1143 |
|
|
|
1144 |
|
|
for (s->win_scale = 0, i = 0; i < s->win_size; i++) { |
1145 |
|
|
s->win_scale += s->window_func_lut[i] * s->window_func_lut[i]; |
1146 |
|
|
} |
1147 |
|
|
s->win_scale = 1.f / sqrtf(s->win_scale); |
1148 |
|
|
|
1149 |
|
|
/* prepare the initial picref buffer (black frame) */ |
1150 |
|
|
av_frame_free(&s->outpicref); |
1151 |
|
|
s->outpicref = outpicref = |
1152 |
|
|
ff_get_video_buffer(outlink, outlink->w, outlink->h); |
1153 |
|
|
if (!outpicref) |
1154 |
|
|
return AVERROR(ENOMEM); |
1155 |
|
|
outpicref->sample_aspect_ratio = (AVRational){1,1}; |
1156 |
|
|
for (i = 0; i < outlink->h; i++) { |
1157 |
|
|
memset(outpicref->data[0] + i * outpicref->linesize[0], 0, outlink->w); |
1158 |
|
|
memset(outpicref->data[1] + i * outpicref->linesize[1], 128, outlink->w); |
1159 |
|
|
memset(outpicref->data[2] + i * outpicref->linesize[2], 128, outlink->w); |
1160 |
|
|
} |
1161 |
|
|
outpicref->color_range = AVCOL_RANGE_JPEG; |
1162 |
|
|
|
1163 |
|
|
if (!s->single_pic && s->legend) |
1164 |
|
|
draw_legend(ctx, 0); |
1165 |
|
|
} |
1166 |
|
|
|
1167 |
|
|
if ((s->orientation == VERTICAL && s->xpos >= s->w) || |
1168 |
|
|
(s->orientation == HORIZONTAL && s->xpos >= s->h)) |
1169 |
|
|
s->xpos = 0; |
1170 |
|
|
|
1171 |
|
|
s->auto_frame_rate = av_make_q(inlink->sample_rate, s->hop_size); |
1172 |
|
|
if (s->orientation == VERTICAL && s->sliding == FULLFRAME) |
1173 |
|
|
s->auto_frame_rate.den *= s->w; |
1174 |
|
|
if (s->orientation == HORIZONTAL && s->sliding == FULLFRAME) |
1175 |
|
|
s->auto_frame_rate.den *= s->h; |
1176 |
|
|
if (!s->single_pic && strcmp(s->rate_str, "auto")) { |
1177 |
|
|
int ret = av_parse_video_rate(&s->frame_rate, s->rate_str); |
1178 |
|
|
if (ret < 0) |
1179 |
|
|
return ret; |
1180 |
|
|
} else { |
1181 |
|
|
s->frame_rate = s->auto_frame_rate; |
1182 |
|
|
} |
1183 |
|
|
outlink->frame_rate = s->frame_rate; |
1184 |
|
|
outlink->time_base = av_inv_q(outlink->frame_rate); |
1185 |
|
|
|
1186 |
|
|
if (s->orientation == VERTICAL) { |
1187 |
|
|
s->combine_buffer = |
1188 |
|
|
av_realloc_f(s->combine_buffer, s->h * 3, |
1189 |
|
|
sizeof(*s->combine_buffer)); |
1190 |
|
|
} else { |
1191 |
|
|
s->combine_buffer = |
1192 |
|
|
av_realloc_f(s->combine_buffer, s->w * 3, |
1193 |
|
|
sizeof(*s->combine_buffer)); |
1194 |
|
|
} |
1195 |
|
|
|
1196 |
|
|
av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d FFT window size:%d\n", |
1197 |
|
|
s->w, s->h, s->win_size); |
1198 |
|
|
|
1199 |
|
|
av_audio_fifo_free(s->fifo); |
1200 |
|
|
s->fifo = av_audio_fifo_alloc(inlink->format, inlink->channels, s->win_size); |
1201 |
|
|
if (!s->fifo) |
1202 |
|
|
return AVERROR(ENOMEM); |
1203 |
|
|
return 0; |
1204 |
|
|
} |
1205 |
|
|
|
1206 |
|
|
#define RE(y, ch) s->fft_data[ch][y].re |
1207 |
|
|
#define IM(y, ch) s->fft_data[ch][y].im |
1208 |
|
|
#define MAGNITUDE(y, ch) hypotf(RE(y, ch), IM(y, ch)) |
1209 |
|
|
#define PHASE(y, ch) atan2f(IM(y, ch), RE(y, ch)) |
1210 |
|
|
|
1211 |
|
|
static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
1212 |
|
|
{ |
1213 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1214 |
|
|
const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1); |
1215 |
|
|
int y, h = s->orientation == VERTICAL ? s->h : s->w; |
1216 |
|
|
const float f = s->gain * w; |
1217 |
|
|
const int ch = jobnr; |
1218 |
|
|
float *magnitudes = s->magnitudes[ch]; |
1219 |
|
|
|
1220 |
|
|
for (y = 0; y < h; y++) |
1221 |
|
|
magnitudes[y] = MAGNITUDE(y, ch) * f; |
1222 |
|
|
|
1223 |
|
|
return 0; |
1224 |
|
|
} |
1225 |
|
|
|
1226 |
|
|
static int calc_channel_phases(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
1227 |
|
|
{ |
1228 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1229 |
|
|
const int h = s->orientation == VERTICAL ? s->h : s->w; |
1230 |
|
|
const int ch = jobnr; |
1231 |
|
|
float *phases = s->phases[ch]; |
1232 |
|
|
int y; |
1233 |
|
|
|
1234 |
|
|
for (y = 0; y < h; y++) |
1235 |
|
|
phases[y] = (PHASE(y, ch) / M_PI + 1) / 2; |
1236 |
|
|
|
1237 |
|
|
return 0; |
1238 |
|
|
} |
1239 |
|
|
|
1240 |
|
|
static void acalc_magnitudes(ShowSpectrumContext *s) |
1241 |
|
|
{ |
1242 |
|
|
const double w = s->win_scale * (s->scale == LOG ? s->win_scale : 1); |
1243 |
|
|
int ch, y, h = s->orientation == VERTICAL ? s->h : s->w; |
1244 |
|
|
const float f = s->gain * w; |
1245 |
|
|
|
1246 |
|
|
for (ch = 0; ch < s->nb_display_channels; ch++) { |
1247 |
|
|
float *magnitudes = s->magnitudes[ch]; |
1248 |
|
|
|
1249 |
|
|
for (y = 0; y < h; y++) |
1250 |
|
|
magnitudes[y] += MAGNITUDE(y, ch) * f; |
1251 |
|
|
} |
1252 |
|
|
} |
1253 |
|
|
|
1254 |
|
|
static void scale_magnitudes(ShowSpectrumContext *s, float scale) |
1255 |
|
|
{ |
1256 |
|
|
int ch, y, h = s->orientation == VERTICAL ? s->h : s->w; |
1257 |
|
|
|
1258 |
|
|
for (ch = 0; ch < s->nb_display_channels; ch++) { |
1259 |
|
|
float *magnitudes = s->magnitudes[ch]; |
1260 |
|
|
|
1261 |
|
|
for (y = 0; y < h; y++) |
1262 |
|
|
magnitudes[y] *= scale; |
1263 |
|
|
} |
1264 |
|
|
} |
1265 |
|
|
|
1266 |
|
|
static void clear_combine_buffer(ShowSpectrumContext *s, int size) |
1267 |
|
|
{ |
1268 |
|
|
int y; |
1269 |
|
|
|
1270 |
|
|
for (y = 0; y < size; y++) { |
1271 |
|
|
s->combine_buffer[3 * y ] = 0; |
1272 |
|
|
s->combine_buffer[3 * y + 1] = 127.5; |
1273 |
|
|
s->combine_buffer[3 * y + 2] = 127.5; |
1274 |
|
|
} |
1275 |
|
|
} |
1276 |
|
|
|
1277 |
|
|
static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples) |
1278 |
|
|
{ |
1279 |
|
|
AVFilterContext *ctx = inlink->dst; |
1280 |
|
|
AVFilterLink *outlink = ctx->outputs[0]; |
1281 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1282 |
|
|
AVFrame *outpicref = s->outpicref; |
1283 |
|
|
int ret, plane, x, y, z = s->orientation == VERTICAL ? s->h : s->w; |
1284 |
|
|
|
1285 |
|
|
/* fill a new spectrum column */ |
1286 |
|
|
/* initialize buffer for combining to black */ |
1287 |
|
|
clear_combine_buffer(s, z); |
1288 |
|
|
|
1289 |
|
|
ctx->internal->execute(ctx, s->plot_channel, NULL, NULL, s->nb_display_channels); |
1290 |
|
|
|
1291 |
|
|
for (y = 0; y < z * 3; y++) { |
1292 |
|
|
for (x = 0; x < s->nb_display_channels; x++) { |
1293 |
|
|
s->combine_buffer[y] += s->color_buffer[x][y]; |
1294 |
|
|
} |
1295 |
|
|
} |
1296 |
|
|
|
1297 |
|
|
av_frame_make_writable(s->outpicref); |
1298 |
|
|
/* copy to output */ |
1299 |
|
|
if (s->orientation == VERTICAL) { |
1300 |
|
|
if (s->sliding == SCROLL) { |
1301 |
|
|
for (plane = 0; plane < 3; plane++) { |
1302 |
|
|
for (y = 0; y < s->h; y++) { |
1303 |
|
|
uint8_t *p = outpicref->data[plane] + s->start_x + |
1304 |
|
|
(y + s->start_y) * outpicref->linesize[plane]; |
1305 |
|
|
memmove(p, p + 1, s->w - 1); |
1306 |
|
|
} |
1307 |
|
|
} |
1308 |
|
|
s->xpos = s->w - 1; |
1309 |
|
|
} else if (s->sliding == RSCROLL) { |
1310 |
|
|
for (plane = 0; plane < 3; plane++) { |
1311 |
|
|
for (y = 0; y < s->h; y++) { |
1312 |
|
|
uint8_t *p = outpicref->data[plane] + s->start_x + |
1313 |
|
|
(y + s->start_y) * outpicref->linesize[plane]; |
1314 |
|
|
memmove(p + 1, p, s->w - 1); |
1315 |
|
|
} |
1316 |
|
|
} |
1317 |
|
|
s->xpos = 0; |
1318 |
|
|
} |
1319 |
|
|
for (plane = 0; plane < 3; plane++) { |
1320 |
|
|
uint8_t *p = outpicref->data[plane] + s->start_x + |
1321 |
|
|
(outlink->h - 1 - s->start_y) * outpicref->linesize[plane] + |
1322 |
|
|
s->xpos; |
1323 |
|
|
for (y = 0; y < s->h; y++) { |
1324 |
|
|
*p = lrintf(av_clipf(s->combine_buffer[3 * y + plane], 0, 255)); |
1325 |
|
|
p -= outpicref->linesize[plane]; |
1326 |
|
|
} |
1327 |
|
|
} |
1328 |
|
|
} else { |
1329 |
|
|
if (s->sliding == SCROLL) { |
1330 |
|
|
for (plane = 0; plane < 3; plane++) { |
1331 |
|
|
for (y = 1; y < s->h; y++) { |
1332 |
|
|
memmove(outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x, |
1333 |
|
|
outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x, |
1334 |
|
|
s->w); |
1335 |
|
|
} |
1336 |
|
|
} |
1337 |
|
|
s->xpos = s->h - 1; |
1338 |
|
|
} else if (s->sliding == RSCROLL) { |
1339 |
|
|
for (plane = 0; plane < 3; plane++) { |
1340 |
|
|
for (y = s->h - 1; y >= 1; y--) { |
1341 |
|
|
memmove(outpicref->data[plane] + (y + s->start_y) * outpicref->linesize[plane] + s->start_x, |
1342 |
|
|
outpicref->data[plane] + (y-1 + s->start_y) * outpicref->linesize[plane] + s->start_x, |
1343 |
|
|
s->w); |
1344 |
|
|
} |
1345 |
|
|
} |
1346 |
|
|
s->xpos = 0; |
1347 |
|
|
} |
1348 |
|
|
for (plane = 0; plane < 3; plane++) { |
1349 |
|
|
uint8_t *p = outpicref->data[plane] + s->start_x + |
1350 |
|
|
(s->xpos + s->start_y) * outpicref->linesize[plane]; |
1351 |
|
|
for (x = 0; x < s->w; x++) { |
1352 |
|
|
*p = lrintf(av_clipf(s->combine_buffer[3 * x + plane], 0, 255)); |
1353 |
|
|
p++; |
1354 |
|
|
} |
1355 |
|
|
} |
1356 |
|
|
} |
1357 |
|
|
|
1358 |
|
|
if (s->sliding != FULLFRAME || s->xpos == 0) |
1359 |
|
|
outpicref->pts = av_rescale_q(insamples->pts, inlink->time_base, outlink->time_base); |
1360 |
|
|
|
1361 |
|
|
s->xpos++; |
1362 |
|
|
if (s->orientation == VERTICAL && s->xpos >= s->w) |
1363 |
|
|
s->xpos = 0; |
1364 |
|
|
if (s->orientation == HORIZONTAL && s->xpos >= s->h) |
1365 |
|
|
s->xpos = 0; |
1366 |
|
|
if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) { |
1367 |
|
|
if (s->old_pts < outpicref->pts) { |
1368 |
|
|
AVFrame *clone; |
1369 |
|
|
|
1370 |
|
|
if (s->legend) { |
1371 |
|
|
char *units = get_time(ctx, insamples->pts /(float)inlink->sample_rate, x); |
1372 |
|
|
if (!units) |
1373 |
|
|
return AVERROR(ENOMEM); |
1374 |
|
|
|
1375 |
|
|
if (s->orientation == VERTICAL) { |
1376 |
|
|
for (y = 0; y < 10; y++) { |
1377 |
|
|
memset(s->outpicref->data[0] + outlink->w / 2 - 4 * s->old_len + |
1378 |
|
|
(outlink->h - s->start_y / 2 - 20 + y) * s->outpicref->linesize[0], 0, 10 * s->old_len); |
1379 |
|
|
} |
1380 |
|
|
drawtext(s->outpicref, |
1381 |
|
|
outlink->w / 2 - 4 * strlen(units), |
1382 |
|
|
outlink->h - s->start_y / 2 - 20, |
1383 |
|
|
units, 0); |
1384 |
|
|
} else { |
1385 |
|
|
for (y = 0; y < 10 * s->old_len; y++) { |
1386 |
|
|
memset(s->outpicref->data[0] + s->start_x / 7 + 20 + |
1387 |
|
|
(outlink->h / 2 - 4 * s->old_len + y) * s->outpicref->linesize[0], 0, 10); |
1388 |
|
|
} |
1389 |
|
|
drawtext(s->outpicref, |
1390 |
|
|
s->start_x / 7 + 20, |
1391 |
|
|
outlink->h / 2 - 4 * strlen(units), |
1392 |
|
|
units, 1); |
1393 |
|
|
} |
1394 |
|
|
s->old_len = strlen(units); |
1395 |
|
|
av_free(units); |
1396 |
|
|
} |
1397 |
|
|
s->old_pts = outpicref->pts; |
1398 |
|
|
clone = av_frame_clone(s->outpicref); |
1399 |
|
|
if (!clone) |
1400 |
|
|
return AVERROR(ENOMEM); |
1401 |
|
|
ret = ff_filter_frame(outlink, clone); |
1402 |
|
|
if (ret < 0) |
1403 |
|
|
return ret; |
1404 |
|
|
return 0; |
1405 |
|
|
} |
1406 |
|
|
} |
1407 |
|
|
|
1408 |
|
|
return 1; |
1409 |
|
|
} |
1410 |
|
|
|
1411 |
|
|
#if CONFIG_SHOWSPECTRUM_FILTER |
1412 |
|
|
|
1413 |
|
|
static int activate(AVFilterContext *ctx) |
1414 |
|
|
{ |
1415 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
1416 |
|
|
AVFilterLink *outlink = ctx->outputs[0]; |
1417 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1418 |
|
|
int ret; |
1419 |
|
|
|
1420 |
|
|
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink); |
1421 |
|
|
|
1422 |
|
|
if (av_audio_fifo_size(s->fifo) < s->win_size) { |
1423 |
|
|
AVFrame *frame = NULL; |
1424 |
|
|
|
1425 |
|
|
ret = ff_inlink_consume_frame(inlink, &frame); |
1426 |
|
|
if (ret < 0) |
1427 |
|
|
return ret; |
1428 |
|
|
if (ret > 0) { |
1429 |
|
|
s->pts = frame->pts; |
1430 |
|
|
s->consumed = 0; |
1431 |
|
|
|
1432 |
|
|
av_audio_fifo_write(s->fifo, (void **)frame->extended_data, frame->nb_samples); |
1433 |
|
|
av_frame_free(&frame); |
1434 |
|
|
} |
1435 |
|
|
} |
1436 |
|
|
|
1437 |
|
|
if (s->outpicref && (av_audio_fifo_size(s->fifo) >= s->win_size || |
1438 |
|
|
ff_outlink_get_status(inlink))) { |
1439 |
|
|
AVFrame *fin = ff_get_audio_buffer(inlink, s->win_size); |
1440 |
|
|
if (!fin) |
1441 |
|
|
return AVERROR(ENOMEM); |
1442 |
|
|
|
1443 |
|
|
fin->pts = s->pts + s->consumed; |
1444 |
|
|
s->consumed += s->hop_size; |
1445 |
|
|
ret = av_audio_fifo_peek(s->fifo, (void **)fin->extended_data, |
1446 |
|
|
FFMIN(s->win_size, av_audio_fifo_size(s->fifo))); |
1447 |
|
|
if (ret < 0) { |
1448 |
|
|
av_frame_free(&fin); |
1449 |
|
|
return ret; |
1450 |
|
|
} |
1451 |
|
|
|
1452 |
|
|
av_assert0(fin->nb_samples == s->win_size); |
1453 |
|
|
|
1454 |
|
|
ctx->internal->execute(ctx, run_channel_fft, fin, NULL, s->nb_display_channels); |
1455 |
|
|
|
1456 |
|
|
if (s->data == D_MAGNITUDE) |
1457 |
|
|
ctx->internal->execute(ctx, calc_channel_magnitudes, NULL, NULL, s->nb_display_channels); |
1458 |
|
|
|
1459 |
|
|
if (s->data == D_PHASE) |
1460 |
|
|
ctx->internal->execute(ctx, calc_channel_phases, NULL, NULL, s->nb_display_channels); |
1461 |
|
|
|
1462 |
|
|
ret = plot_spectrum_column(inlink, fin); |
1463 |
|
|
|
1464 |
|
|
av_frame_free(&fin); |
1465 |
|
|
av_audio_fifo_drain(s->fifo, s->hop_size); |
1466 |
|
|
if (ret <= 0 && !ff_outlink_get_status(inlink)) |
1467 |
|
|
return ret; |
1468 |
|
|
} |
1469 |
|
|
|
1470 |
|
|
if (ff_outlink_get_status(inlink) == AVERROR_EOF && |
1471 |
|
|
s->sliding == FULLFRAME && |
1472 |
|
|
s->xpos > 0 && s->outpicref) { |
1473 |
|
|
int64_t pts; |
1474 |
|
|
|
1475 |
|
|
if (s->orientation == VERTICAL) { |
1476 |
|
|
for (int i = 0; i < outlink->h; i++) { |
1477 |
|
|
memset(s->outpicref->data[0] + i * s->outpicref->linesize[0] + s->xpos, 0, outlink->w - s->xpos); |
1478 |
|
|
memset(s->outpicref->data[1] + i * s->outpicref->linesize[1] + s->xpos, 128, outlink->w - s->xpos); |
1479 |
|
|
memset(s->outpicref->data[2] + i * s->outpicref->linesize[2] + s->xpos, 128, outlink->w - s->xpos); |
1480 |
|
|
} |
1481 |
|
|
} else { |
1482 |
|
|
for (int i = s->xpos; i < outlink->h; i++) { |
1483 |
|
|
memset(s->outpicref->data[0] + i * s->outpicref->linesize[0], 0, outlink->w); |
1484 |
|
|
memset(s->outpicref->data[1] + i * s->outpicref->linesize[1], 128, outlink->w); |
1485 |
|
|
memset(s->outpicref->data[2] + i * s->outpicref->linesize[2], 128, outlink->w); |
1486 |
|
|
} |
1487 |
|
|
} |
1488 |
|
|
s->outpicref->pts += s->consumed; |
1489 |
|
|
pts = s->outpicref->pts; |
1490 |
|
|
ret = ff_filter_frame(outlink, s->outpicref); |
1491 |
|
|
s->outpicref = NULL; |
1492 |
|
|
ff_outlink_set_status(outlink, AVERROR_EOF, pts); |
1493 |
|
|
return 0; |
1494 |
|
|
} |
1495 |
|
|
|
1496 |
|
|
FF_FILTER_FORWARD_STATUS(inlink, outlink); |
1497 |
|
|
if (av_audio_fifo_size(s->fifo) >= s->win_size || |
1498 |
|
|
ff_outlink_get_status(inlink) == AVERROR_EOF) { |
1499 |
|
|
ff_filter_set_ready(ctx, 10); |
1500 |
|
|
return 0; |
1501 |
|
|
} |
1502 |
|
|
|
1503 |
|
|
if (ff_outlink_frame_wanted(outlink) && av_audio_fifo_size(s->fifo) < s->win_size && |
1504 |
|
|
ff_outlink_get_status(inlink) != AVERROR_EOF) { |
1505 |
|
|
ff_inlink_request_frame(inlink); |
1506 |
|
|
return 0; |
1507 |
|
|
} |
1508 |
|
|
|
1509 |
|
|
return FFERROR_NOT_READY; |
1510 |
|
|
} |
1511 |
|
|
|
1512 |
|
|
static const AVFilterPad showspectrum_inputs[] = { |
1513 |
|
|
{ |
1514 |
|
|
.name = "default", |
1515 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
1516 |
|
|
}, |
1517 |
|
|
{ NULL } |
1518 |
|
|
}; |
1519 |
|
|
|
1520 |
|
|
static const AVFilterPad showspectrum_outputs[] = { |
1521 |
|
|
{ |
1522 |
|
|
.name = "default", |
1523 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
1524 |
|
|
.config_props = config_output, |
1525 |
|
|
}, |
1526 |
|
|
{ NULL } |
1527 |
|
|
}; |
1528 |
|
|
|
1529 |
|
|
AVFilter ff_avf_showspectrum = { |
1530 |
|
|
.name = "showspectrum", |
1531 |
|
|
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output."), |
1532 |
|
|
.uninit = uninit, |
1533 |
|
|
.query_formats = query_formats, |
1534 |
|
|
.priv_size = sizeof(ShowSpectrumContext), |
1535 |
|
|
.inputs = showspectrum_inputs, |
1536 |
|
|
.outputs = showspectrum_outputs, |
1537 |
|
|
.activate = activate, |
1538 |
|
|
.priv_class = &showspectrum_class, |
1539 |
|
|
.flags = AVFILTER_FLAG_SLICE_THREADS, |
1540 |
|
|
}; |
1541 |
|
|
#endif // CONFIG_SHOWSPECTRUM_FILTER |
1542 |
|
|
|
1543 |
|
|
#if CONFIG_SHOWSPECTRUMPIC_FILTER |
1544 |
|
|
|
1545 |
|
|
static const AVOption showspectrumpic_options[] = { |
1546 |
|
|
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "4096x2048"}, 0, 0, FLAGS }, |
1547 |
|
|
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "4096x2048"}, 0, 0, FLAGS }, |
1548 |
|
|
{ "mode", "set channel display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=COMBINED}, 0, NB_MODES-1, FLAGS, "mode" }, |
1549 |
|
|
{ "combined", "combined mode", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, "mode" }, |
1550 |
|
|
{ "separate", "separate mode", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "mode" }, |
1551 |
|
|
{ "color", "set channel coloring", OFFSET(color_mode), AV_OPT_TYPE_INT, {.i64=INTENSITY}, 0, NB_CLMODES-1, FLAGS, "color" }, |
1552 |
|
|
{ "channel", "separate color for each channel", 0, AV_OPT_TYPE_CONST, {.i64=CHANNEL}, 0, 0, FLAGS, "color" }, |
1553 |
|
|
{ "intensity", "intensity based coloring", 0, AV_OPT_TYPE_CONST, {.i64=INTENSITY}, 0, 0, FLAGS, "color" }, |
1554 |
|
|
{ "rainbow", "rainbow based coloring", 0, AV_OPT_TYPE_CONST, {.i64=RAINBOW}, 0, 0, FLAGS, "color" }, |
1555 |
|
|
{ "moreland", "moreland based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MORELAND}, 0, 0, FLAGS, "color" }, |
1556 |
|
|
{ "nebulae", "nebulae based coloring", 0, AV_OPT_TYPE_CONST, {.i64=NEBULAE}, 0, 0, FLAGS, "color" }, |
1557 |
|
|
{ "fire", "fire based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIRE}, 0, 0, FLAGS, "color" }, |
1558 |
|
|
{ "fiery", "fiery based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FIERY}, 0, 0, FLAGS, "color" }, |
1559 |
|
|
{ "fruit", "fruit based coloring", 0, AV_OPT_TYPE_CONST, {.i64=FRUIT}, 0, 0, FLAGS, "color" }, |
1560 |
|
|
{ "cool", "cool based coloring", 0, AV_OPT_TYPE_CONST, {.i64=COOL}, 0, 0, FLAGS, "color" }, |
1561 |
|
|
{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" }, |
1562 |
|
|
{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" }, |
1563 |
|
|
{ "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" }, |
1564 |
|
|
{ "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" }, |
1565 |
|
|
{ "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" }, |
1566 |
|
|
{ "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 0, 0, FLAGS, "color" }, |
1567 |
|
|
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, 0, NB_SCALES-1, FLAGS, "scale" }, |
1568 |
|
|
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" }, |
1569 |
|
|
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" }, |
1570 |
|
|
{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" }, |
1571 |
|
|
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" }, |
1572 |
|
|
{ "4thrt","4th root", 0, AV_OPT_TYPE_CONST, {.i64=FOURTHRT}, 0, 0, FLAGS, "scale" }, |
1573 |
|
|
{ "5thrt","5th root", 0, AV_OPT_TYPE_CONST, {.i64=FIFTHRT}, 0, 0, FLAGS, "scale" }, |
1574 |
|
|
{ "fscale", "set frequency scale", OFFSET(fscale), AV_OPT_TYPE_INT, {.i64=F_LINEAR}, 0, NB_FSCALES-1, FLAGS, "fscale" }, |
1575 |
|
|
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=F_LINEAR}, 0, 0, FLAGS, "fscale" }, |
1576 |
|
|
{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=F_LOG}, 0, 0, FLAGS, "fscale" }, |
1577 |
|
|
{ "saturation", "color saturation multiplier", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1}, -10, 10, FLAGS }, |
1578 |
|
|
{ "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64 = WFUNC_HANNING}, 0, NB_WFUNC-1, FLAGS, "win_func" }, |
1579 |
|
|
{ "rect", "Rectangular", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT}, 0, 0, FLAGS, "win_func" }, |
1580 |
|
|
{ "bartlett", "Bartlett", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, FLAGS, "win_func" }, |
1581 |
|
|
{ "hann", "Hann", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING}, 0, 0, FLAGS, "win_func" }, |
1582 |
|
|
{ "hanning", "Hanning", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING}, 0, 0, FLAGS, "win_func" }, |
1583 |
|
|
{ "hamming", "Hamming", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HAMMING}, 0, 0, FLAGS, "win_func" }, |
1584 |
|
|
{ "blackman", "Blackman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BLACKMAN}, 0, 0, FLAGS, "win_func" }, |
1585 |
|
|
{ "welch", "Welch", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_WELCH}, 0, 0, FLAGS, "win_func" }, |
1586 |
|
|
{ "flattop", "Flat-top", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_FLATTOP}, 0, 0, FLAGS, "win_func" }, |
1587 |
|
|
{ "bharris", "Blackman-Harris", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHARRIS}, 0, 0, FLAGS, "win_func" }, |
1588 |
|
|
{ "bnuttall", "Blackman-Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BNUTTALL}, 0, 0, FLAGS, "win_func" }, |
1589 |
|
|
{ "bhann", "Bartlett-Hann", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHANN}, 0, 0, FLAGS, "win_func" }, |
1590 |
|
|
{ "sine", "Sine", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_SINE}, 0, 0, FLAGS, "win_func" }, |
1591 |
|
|
{ "nuttall", "Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_NUTTALL}, 0, 0, FLAGS, "win_func" }, |
1592 |
|
|
{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_LANCZOS}, 0, 0, FLAGS, "win_func" }, |
1593 |
|
|
{ "gauss", "Gauss", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_GAUSS}, 0, 0, FLAGS, "win_func" }, |
1594 |
|
|
{ "tukey", "Tukey", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_TUKEY}, 0, 0, FLAGS, "win_func" }, |
1595 |
|
|
{ "dolph", "Dolph-Chebyshev", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_DOLPH}, 0, 0, FLAGS, "win_func" }, |
1596 |
|
|
{ "cauchy", "Cauchy", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY}, 0, 0, FLAGS, "win_func" }, |
1597 |
|
|
{ "parzen", "Parzen", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN}, 0, 0, FLAGS, "win_func" }, |
1598 |
|
|
{ "poisson", "Poisson", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON}, 0, 0, FLAGS, "win_func" }, |
1599 |
|
|
{ "bohman", "Bohman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN}, 0, 0, FLAGS, "win_func" }, |
1600 |
|
|
{ "orientation", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=VERTICAL}, 0, NB_ORIENTATIONS-1, FLAGS, "orientation" }, |
1601 |
|
|
{ "vertical", NULL, 0, AV_OPT_TYPE_CONST, {.i64=VERTICAL}, 0, 0, FLAGS, "orientation" }, |
1602 |
|
|
{ "horizontal", NULL, 0, AV_OPT_TYPE_CONST, {.i64=HORIZONTAL}, 0, 0, FLAGS, "orientation" }, |
1603 |
|
|
{ "gain", "set scale gain", OFFSET(gain), AV_OPT_TYPE_FLOAT, {.dbl = 1}, 0, 128, FLAGS }, |
1604 |
|
|
{ "legend", "draw legend", OFFSET(legend), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS }, |
1605 |
|
|
{ "rotation", "color rotation", OFFSET(rotation), AV_OPT_TYPE_FLOAT, {.dbl = 0}, -1, 1, FLAGS }, |
1606 |
|
|
{ "start", "start frequency", OFFSET(start), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS }, |
1607 |
|
|
{ "stop", "stop frequency", OFFSET(stop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT32_MAX, FLAGS }, |
1608 |
|
|
{ NULL } |
1609 |
|
|
}; |
1610 |
|
|
|
1611 |
|
|
AVFILTER_DEFINE_CLASS(showspectrumpic); |
1612 |
|
|
|
1613 |
|
|
static int showspectrumpic_request_frame(AVFilterLink *outlink) |
1614 |
|
|
{ |
1615 |
|
|
AVFilterContext *ctx = outlink->src; |
1616 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1617 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
1618 |
|
|
int ret, samples; |
1619 |
|
|
|
1620 |
|
|
ret = ff_request_frame(inlink); |
1621 |
|
|
samples = av_audio_fifo_size(s->fifo); |
1622 |
|
|
if (ret == AVERROR_EOF && s->outpicref && samples > 0) { |
1623 |
|
|
int consumed = 0; |
1624 |
|
|
int x = 0, sz = s->orientation == VERTICAL ? s->w : s->h; |
1625 |
|
|
int ch, spf, spb; |
1626 |
|
|
AVFrame *fin; |
1627 |
|
|
|
1628 |
|
|
spf = s->win_size * (samples / ((s->win_size * sz) * ceil(samples / (float)(s->win_size * sz)))); |
1629 |
|
|
spf = FFMAX(1, spf); |
1630 |
|
|
|
1631 |
|
|
spb = (samples / (spf * sz)) * spf; |
1632 |
|
|
|
1633 |
|
|
fin = ff_get_audio_buffer(inlink, s->win_size); |
1634 |
|
|
if (!fin) |
1635 |
|
|
return AVERROR(ENOMEM); |
1636 |
|
|
|
1637 |
|
|
while (x < sz) { |
1638 |
|
|
ret = av_audio_fifo_peek(s->fifo, (void **)fin->extended_data, s->win_size); |
1639 |
|
|
if (ret < 0) { |
1640 |
|
|
av_frame_free(&fin); |
1641 |
|
|
return ret; |
1642 |
|
|
} |
1643 |
|
|
|
1644 |
|
|
av_audio_fifo_drain(s->fifo, spf); |
1645 |
|
|
|
1646 |
|
|
if (ret < s->win_size) { |
1647 |
|
|
for (ch = 0; ch < s->nb_display_channels; ch++) { |
1648 |
|
|
memset(fin->extended_data[ch] + ret * sizeof(float), 0, |
1649 |
|
|
(s->win_size - ret) * sizeof(float)); |
1650 |
|
|
} |
1651 |
|
|
} |
1652 |
|
|
|
1653 |
|
|
ctx->internal->execute(ctx, run_channel_fft, fin, NULL, s->nb_display_channels); |
1654 |
|
|
acalc_magnitudes(s); |
1655 |
|
|
|
1656 |
|
|
consumed += spf; |
1657 |
|
|
if (consumed >= spb) { |
1658 |
|
|
int h = s->orientation == VERTICAL ? s->h : s->w; |
1659 |
|
|
|
1660 |
|
|
scale_magnitudes(s, 1.f / (consumed / spf)); |
1661 |
|
|
plot_spectrum_column(inlink, fin); |
1662 |
|
|
consumed = 0; |
1663 |
|
|
x++; |
1664 |
|
|
for (ch = 0; ch < s->nb_display_channels; ch++) |
1665 |
|
|
memset(s->magnitudes[ch], 0, h * sizeof(float)); |
1666 |
|
|
} |
1667 |
|
|
} |
1668 |
|
|
|
1669 |
|
|
av_frame_free(&fin); |
1670 |
|
|
s->outpicref->pts = 0; |
1671 |
|
|
|
1672 |
|
|
if (s->legend) |
1673 |
|
|
draw_legend(ctx, samples); |
1674 |
|
|
|
1675 |
|
|
ret = ff_filter_frame(outlink, s->outpicref); |
1676 |
|
|
s->outpicref = NULL; |
1677 |
|
|
} |
1678 |
|
|
|
1679 |
|
|
return ret; |
1680 |
|
|
} |
1681 |
|
|
|
1682 |
|
|
static int showspectrumpic_filter_frame(AVFilterLink *inlink, AVFrame *insamples) |
1683 |
|
|
{ |
1684 |
|
|
AVFilterContext *ctx = inlink->dst; |
1685 |
|
|
ShowSpectrumContext *s = ctx->priv; |
1686 |
|
|
int ret; |
1687 |
|
|
|
1688 |
|
|
ret = av_audio_fifo_write(s->fifo, (void **)insamples->extended_data, insamples->nb_samples); |
1689 |
|
|
av_frame_free(&insamples); |
1690 |
|
|
return ret; |
1691 |
|
|
} |
1692 |
|
|
|
1693 |
|
|
static const AVFilterPad showspectrumpic_inputs[] = { |
1694 |
|
|
{ |
1695 |
|
|
.name = "default", |
1696 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
1697 |
|
|
.filter_frame = showspectrumpic_filter_frame, |
1698 |
|
|
}, |
1699 |
|
|
{ NULL } |
1700 |
|
|
}; |
1701 |
|
|
|
1702 |
|
|
static const AVFilterPad showspectrumpic_outputs[] = { |
1703 |
|
|
{ |
1704 |
|
|
.name = "default", |
1705 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
1706 |
|
|
.config_props = config_output, |
1707 |
|
|
.request_frame = showspectrumpic_request_frame, |
1708 |
|
|
}, |
1709 |
|
|
{ NULL } |
1710 |
|
|
}; |
1711 |
|
|
|
1712 |
|
|
AVFilter ff_avf_showspectrumpic = { |
1713 |
|
|
.name = "showspectrumpic", |
1714 |
|
|
.description = NULL_IF_CONFIG_SMALL("Convert input audio to a spectrum video output single picture."), |
1715 |
|
|
.uninit = uninit, |
1716 |
|
|
.query_formats = query_formats, |
1717 |
|
|
.priv_size = sizeof(ShowSpectrumContext), |
1718 |
|
|
.inputs = showspectrumpic_inputs, |
1719 |
|
|
.outputs = showspectrumpic_outputs, |
1720 |
|
|
.priv_class = &showspectrumpic_class, |
1721 |
|
|
.flags = AVFILTER_FLAG_SLICE_THREADS, |
1722 |
|
|
}; |
1723 |
|
|
|
1724 |
|
|
#endif // CONFIG_SHOWSPECTRUMPIC_FILTER |