FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavfilter/asrc_hilbert.c	Lines:	0	55	0.0 %
Date:	2021-04-18 21:26:34	Branches:	0	22	0.0 %


/*
 * Copyright (c) 2018 Paul B Mahol
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/opt.h"
#include "audio.h"
#include "avfilter.h"
#include "internal.h"
#include "window_func.h"

typedef struct HilbertContext {
    const AVClass *class;

    int sample_rate;
    int nb_taps;
    int nb_samples;
    int win_func;

    float *taps;
    int64_t pts;
} HilbertContext;

#define OFFSET(x) offsetof(HilbertContext, x)
#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

static const AVOption hilbert_options[] = {
    { "sample_rate", "set sample rate",    OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},  1, INT_MAX,    FLAGS },
    { "r",           "set sample rate",    OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100},  1, INT_MAX,    FLAGS },
    { "taps",        "set number of taps", OFFSET(nb_taps),     AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
    { "t",           "set number of taps", OFFSET(nb_taps),     AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
    { "nb_samples",  "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
    { "n",           "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
    { "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64=WFUNC_BLACKMAN}, 0, NB_WFUNC-1, FLAGS, "win_func" },
    { "w",        "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64=WFUNC_BLACKMAN}, 0, NB_WFUNC-1, FLAGS, "win_func" },
        { "rect",     "Rectangular",      0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT},     0, 0, FLAGS, "win_func" },
        { "bartlett", "Bartlett",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, FLAGS, "win_func" },
        { "hanning",  "Hanning",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING},  0, 0, FLAGS, "win_func" },
        { "hamming",  "Hamming",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HAMMING},  0, 0, FLAGS, "win_func" },
        { "blackman", "Blackman",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BLACKMAN}, 0, 0, FLAGS, "win_func" },
        { "welch",    "Welch",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_WELCH},    0, 0, FLAGS, "win_func" },
        { "flattop",  "Flat-top",         0, AV_OPT_TYPE_CONST, {.i64=WFUNC_FLATTOP},  0, 0, FLAGS, "win_func" },
        { "bharris",  "Blackman-Harris",  0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHARRIS},  0, 0, FLAGS, "win_func" },
        { "bnuttall", "Blackman-Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BNUTTALL}, 0, 0, FLAGS, "win_func" },
        { "bhann",    "Bartlett-Hann",    0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHANN},    0, 0, FLAGS, "win_func" },
        { "sine",     "Sine",             0, AV_OPT_TYPE_CONST, {.i64=WFUNC_SINE},     0, 0, FLAGS, "win_func" },
        { "nuttall",  "Nuttall",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_NUTTALL},  0, 0, FLAGS, "win_func" },
        { "lanczos",  "Lanczos",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_LANCZOS},  0, 0, FLAGS, "win_func" },
        { "gauss",    "Gauss",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_GAUSS},    0, 0, FLAGS, "win_func" },
        { "tukey",    "Tukey",            0, AV_OPT_TYPE_CONST, {.i64=WFUNC_TUKEY},    0, 0, FLAGS, "win_func" },
        { "dolph",    "Dolph-Chebyshev",  0, AV_OPT_TYPE_CONST, {.i64=WFUNC_DOLPH},    0, 0, FLAGS, "win_func" },
        { "cauchy",   "Cauchy",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY},   0, 0, FLAGS, "win_func" },
        { "parzen",   "Parzen",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN},   0, 0, FLAGS, "win_func" },
        { "poisson",  "Poisson",          0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON},  0, 0, FLAGS, "win_func" },
        { "bohman" ,  "Bohman",           0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN},   0, 0, FLAGS, "win_func" },
    {NULL}
};

AVFILTER_DEFINE_CLASS(hilbert);

static av_cold int init(AVFilterContext *ctx)
{
    HilbertContext *s = ctx->priv;

    if (!(s->nb_taps & 1)) {
        av_log(s, AV_LOG_ERROR, "Number of taps %d must be odd length.\n", s->nb_taps);
        return AVERROR(EINVAL);
    }

    return 0;
}

static av_cold void uninit(AVFilterContext *ctx)
{
    HilbertContext *s = ctx->priv;

    av_freep(&s->taps);
}

static av_cold int query_formats(AVFilterContext *ctx)
{
    HilbertContext *s = ctx->priv;
    static const int64_t chlayouts[] = { AV_CH_LAYOUT_MONO, -1 };
    int sample_rates[] = { s->sample_rate, -1 };
    static const enum AVSampleFormat sample_fmts[] = {
        AV_SAMPLE_FMT_FLT,
        AV_SAMPLE_FMT_NONE
    };

    AVFilterFormats *formats;
    AVFilterChannelLayouts *layouts;
    int ret;

    formats = ff_make_format_list(sample_fmts);
    if (!formats)
        return AVERROR(ENOMEM);
    ret = ff_set_common_formats (ctx, formats);
    if (ret < 0)
        return ret;

    layouts = ff_make_format64_list(chlayouts);
    if (!layouts)
        return AVERROR(ENOMEM);
    ret = ff_set_common_channel_layouts(ctx, layouts);
    if (ret < 0)
        return ret;

    formats = ff_make_format_list(sample_rates);
    if (!formats)
        return AVERROR(ENOMEM);
    return ff_set_common_samplerates(ctx, formats);
}

static av_cold int config_props(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    HilbertContext *s = ctx->priv;
    float overlap;
    int i;

    s->taps = av_malloc_array(s->nb_taps, sizeof(*s->taps));
    if (!s->taps)
        return AVERROR(ENOMEM);

    generate_window_func(s->taps, s->nb_taps, s->win_func, &overlap);

    for (i = 0; i < s->nb_taps; i++) {
        int k = -(s->nb_taps / 2) + i;

        if (k & 1) {
            float pk = M_PI * k;

            s->taps[i] *= (1.f - cosf(pk)) / pk;
        } else {
            s->taps[i] = 0.f;
        }
    }

    s->pts = 0;

    return 0;
}

static int request_frame(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    HilbertContext *s = ctx->priv;
    AVFrame *frame;
    int nb_samples;

    nb_samples = FFMIN(s->nb_samples, s->nb_taps - s->pts);
    if (!nb_samples)
        return AVERROR_EOF;

    if (!(frame = ff_get_audio_buffer(outlink, nb_samples)))
        return AVERROR(ENOMEM);

    memcpy(frame->data[0], s->taps + s->pts, nb_samples * sizeof(float));

    frame->pts = s->pts;
    s->pts    += nb_samples;
    return ff_filter_frame(outlink, frame);
}

static const AVFilterPad hilbert_outputs[] = {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_AUDIO,
        .request_frame = request_frame,
        .config_props  = config_props,
    },
    { NULL }
};

AVFilter ff_asrc_hilbert = {
    .name          = "hilbert",
    .description   = NULL_IF_CONFIG_SMALL("Generate a Hilbert transform FIR coefficients."),
    .query_formats = query_formats,
    .init          = init,
    .uninit        = uninit,
    .priv_size     = sizeof(HilbertContext),
    .inputs        = NULL,
    .outputs       = hilbert_outputs,
    .priv_class    = &hilbert_class,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2018 Paul B Mahol
3			*
4			* This file is part of FFmpeg.
5			*
6			* FFmpeg is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public License
8			* as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10			*
11			* FFmpeg is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU Lesser General Public License for more details.
15			*
16			* You should have received a copy of the GNU Lesser General Public License
17			* along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18			* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19			*/
20
21			#include "libavutil/opt.h"
22			#include "audio.h"
23			#include "avfilter.h"
24			#include "internal.h"
25			#include "window_func.h"
26
27			typedef struct HilbertContext {
28			const AVClass *class;
29
30			int sample_rate;
31			int nb_taps;
32			int nb_samples;
33			int win_func;
34
35			float *taps;
36			int64_t pts;
37			} HilbertContext;
38
39			#define OFFSET(x) offsetof(HilbertContext, x)
40			#define FLAGS AV_OPT_FLAG_AUDIO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM
41
42			static const AVOption hilbert_options[] = {
43			{ "sample_rate", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT_MAX, FLAGS },
44			{ "r", "set sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64=44100}, 1, INT_MAX, FLAGS },
45			{ "taps", "set number of taps", OFFSET(nb_taps), AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
46			{ "t", "set number of taps", OFFSET(nb_taps), AV_OPT_TYPE_INT, {.i64=22051}, 11, UINT16_MAX, FLAGS },
47			{ "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
48			{ "n", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, FLAGS },
49			{ "win_func", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64=WFUNC_BLACKMAN}, 0, NB_WFUNC-1, FLAGS, "win_func" },
50			{ "w", "set window function", OFFSET(win_func), AV_OPT_TYPE_INT, {.i64=WFUNC_BLACKMAN}, 0, NB_WFUNC-1, FLAGS, "win_func" },
51			{ "rect", "Rectangular", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_RECT}, 0, 0, FLAGS, "win_func" },
52			{ "bartlett", "Bartlett", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BARTLETT}, 0, 0, FLAGS, "win_func" },
53			{ "hanning", "Hanning", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HANNING}, 0, 0, FLAGS, "win_func" },
54			{ "hamming", "Hamming", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_HAMMING}, 0, 0, FLAGS, "win_func" },
55			{ "blackman", "Blackman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BLACKMAN}, 0, 0, FLAGS, "win_func" },
56			{ "welch", "Welch", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_WELCH}, 0, 0, FLAGS, "win_func" },
57			{ "flattop", "Flat-top", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_FLATTOP}, 0, 0, FLAGS, "win_func" },
58			{ "bharris", "Blackman-Harris", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHARRIS}, 0, 0, FLAGS, "win_func" },
59			{ "bnuttall", "Blackman-Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BNUTTALL}, 0, 0, FLAGS, "win_func" },
60			{ "bhann", "Bartlett-Hann", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BHANN}, 0, 0, FLAGS, "win_func" },
61			{ "sine", "Sine", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_SINE}, 0, 0, FLAGS, "win_func" },
62			{ "nuttall", "Nuttall", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_NUTTALL}, 0, 0, FLAGS, "win_func" },
63			{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_LANCZOS}, 0, 0, FLAGS, "win_func" },
64			{ "gauss", "Gauss", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_GAUSS}, 0, 0, FLAGS, "win_func" },
65			{ "tukey", "Tukey", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_TUKEY}, 0, 0, FLAGS, "win_func" },
66			{ "dolph", "Dolph-Chebyshev", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_DOLPH}, 0, 0, FLAGS, "win_func" },
67			{ "cauchy", "Cauchy", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_CAUCHY}, 0, 0, FLAGS, "win_func" },
68			{ "parzen", "Parzen", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_PARZEN}, 0, 0, FLAGS, "win_func" },
69			{ "poisson", "Poisson", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_POISSON}, 0, 0, FLAGS, "win_func" },
70			{ "bohman" , "Bohman", 0, AV_OPT_TYPE_CONST, {.i64=WFUNC_BOHMAN}, 0, 0, FLAGS, "win_func" },
71			{NULL}
72			};
73
74			AVFILTER_DEFINE_CLASS(hilbert);
75
76			static av_cold int init(AVFilterContext *ctx)
77			{
78			HilbertContext *s = ctx->priv;
79
80			if (!(s->nb_taps & 1)) {
81			av_log(s, AV_LOG_ERROR, "Number of taps %d must be odd length.\n", s->nb_taps);
82			return AVERROR(EINVAL);
83			}
84
85			return 0;
86			}
87
88			static av_cold void uninit(AVFilterContext *ctx)
89			{
90			HilbertContext *s = ctx->priv;
91
92			av_freep(&s->taps);
93			}
94
95			static av_cold int query_formats(AVFilterContext *ctx)
96			{
97			HilbertContext *s = ctx->priv;
98			static const int64_t chlayouts[] = { AV_CH_LAYOUT_MONO, -1 };
99			int sample_rates[] = { s->sample_rate, -1 };
100			static const enum AVSampleFormat sample_fmts[] = {
101			AV_SAMPLE_FMT_FLT,
102			AV_SAMPLE_FMT_NONE
103			};
104
105			AVFilterFormats *formats;
106			AVFilterChannelLayouts *layouts;
107			int ret;
108
109			formats = ff_make_format_list(sample_fmts);
110			if (!formats)
111			return AVERROR(ENOMEM);
112			ret = ff_set_common_formats (ctx, formats);
113			if (ret < 0)
114			return ret;
115
116			layouts = ff_make_format64_list(chlayouts);
117			if (!layouts)
118			return AVERROR(ENOMEM);
119			ret = ff_set_common_channel_layouts(ctx, layouts);
120			if (ret < 0)
121			return ret;
122
123			formats = ff_make_format_list(sample_rates);
124			if (!formats)
125			return AVERROR(ENOMEM);
126			return ff_set_common_samplerates(ctx, formats);
127			}
128
129			static av_cold int config_props(AVFilterLink *outlink)
130			{
131			AVFilterContext *ctx = outlink->src;
132			HilbertContext *s = ctx->priv;
133			float overlap;
134			int i;
135
136			s->taps = av_malloc_array(s->nb_taps, sizeof(*s->taps));
137			if (!s->taps)
138			return AVERROR(ENOMEM);
139
140			generate_window_func(s->taps, s->nb_taps, s->win_func, &overlap);
141
142			for (i = 0; i < s->nb_taps; i++) {
143			int k = -(s->nb_taps / 2) + i;
144
145			if (k & 1) {
146			float pk = M_PI * k;
147
148			s->taps[i] *= (1.f - cosf(pk)) / pk;
149			} else {
150			s->taps[i] = 0.f;
151			}
152			}
153
154			s->pts = 0;
155
156			return 0;
157			}
158
159			static int request_frame(AVFilterLink *outlink)
160			{
161			AVFilterContext *ctx = outlink->src;
162			HilbertContext *s = ctx->priv;
163			AVFrame *frame;
164			int nb_samples;
165
166			nb_samples = FFMIN(s->nb_samples, s->nb_taps - s->pts);
167			if (!nb_samples)
168			return AVERROR_EOF;
169
170			if (!(frame = ff_get_audio_buffer(outlink, nb_samples)))
171			return AVERROR(ENOMEM);
172
173			memcpy(frame->data[0], s->taps + s->pts, nb_samples * sizeof(float));
174
175			frame->pts = s->pts;
176			s->pts += nb_samples;
177			return ff_filter_frame(outlink, frame);
178			}
179
180			static const AVFilterPad hilbert_outputs[] = {
181			{
182			.name = "default",
183			.type = AVMEDIA_TYPE_AUDIO,
184			.request_frame = request_frame,
185			.config_props = config_props,
186			},
187			{ NULL }
188			};
189
190			AVFilter ff_asrc_hilbert = {
191			.name = "hilbert",
192			.description = NULL_IF_CONFIG_SMALL("Generate a Hilbert transform FIR coefficients."),
193			.query_formats = query_formats,
194			.init = init,
195			.uninit = uninit,
196			.priv_size = sizeof(HilbertContext),
197			.inputs = NULL,
198			.outputs = hilbert_outputs,
199			.priv_class = &hilbert_class,
200			};