FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavfilter/af_acontrast.c	Lines:	0	74	0.0 %
Date:	2021-01-26 11:44:58	Branches:	0	35	0.0 %


/*
 * Copyright (c) 2008 Rob Sykes
 * Copyright (c) 2017 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/channel_layout.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"

typedef struct AudioContrastContext {
    const AVClass *class;
    float contrast;
    void (*filter)(void **dst, const void **src,
                   int nb_samples, int channels, float contrast);
} AudioContrastContext;

#define OFFSET(x) offsetof(AudioContrastContext, x)
#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

static const AVOption acontrast_options[] = {
    { "contrast", "set contrast", OFFSET(contrast), AV_OPT_TYPE_FLOAT, {.dbl=33}, 0, 100, A },
    { NULL }
};

AVFILTER_DEFINE_CLASS(acontrast);

static int query_formats(AVFilterContext *ctx)
{
    AVFilterFormats *formats = NULL;
    AVFilterChannelLayouts *layouts = NULL;
    static const enum AVSampleFormat sample_fmts[] = {
        AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
        AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBLP,
        AV_SAMPLE_FMT_NONE
    };
    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_all_channel_counts();
    if (!layouts)
        return AVERROR(ENOMEM);

    ret = ff_set_common_channel_layouts(ctx, layouts);
    if (ret < 0)
        return ret;

    formats = ff_all_samplerates();
    return ff_set_common_samplerates(ctx, formats);
}

static void filter_flt(void **d, const void **s,
                       int nb_samples, int channels,
                       float contrast)
{
    const float *src = s[0];
    float *dst = d[0];
    int n, c;

    for (n = 0; n < nb_samples; n++) {
        for (c = 0; c < channels; c++) {
            float d = src[c] * M_PI_2;

            dst[c] = sinf(d + contrast * sinf(d * 4));
        }

        dst += c;
        src += c;
    }
}

static void filter_dbl(void **d, const void **s,
                       int nb_samples, int channels,
                       float contrast)
{
    const double *src = s[0];
    double *dst = d[0];
    int n, c;

    for (n = 0; n < nb_samples; n++) {
        for (c = 0; c < channels; c++) {
            double d = src[c] * M_PI_2;

            dst[c] = sin(d + contrast * sin(d * 4));
        }

        dst += c;
        src += c;
    }
}

static void filter_fltp(void **d, const void **s,
                        int nb_samples, int channels,
                        float contrast)
{
    int n, c;

    for (c = 0; c < channels; c++) {
        const float *src = s[c];
        float *dst = d[c];

        for (n = 0; n < nb_samples; n++) {
            float d = src[n] * M_PI_2;

            dst[n] = sinf(d + contrast * sinf(d * 4));
        }
    }
}

static void filter_dblp(void **d, const void **s,
                        int nb_samples, int channels,
                        float contrast)
{
    int n, c;

    for (c = 0; c < channels; c++) {
        const double *src = s[c];
        double *dst = d[c];

        for (n = 0; n < nb_samples; n++) {
            double d = src[n] * M_PI_2;

            dst[n] = sin(d + contrast * sin(d * 4));
        }
    }
}

static int config_input(AVFilterLink *inlink)
{
    AVFilterContext *ctx = inlink->dst;
    AudioContrastContext *s    = ctx->priv;

    switch (inlink->format) {
    case AV_SAMPLE_FMT_FLT:  s->filter = filter_flt;  break;
    case AV_SAMPLE_FMT_DBL:  s->filter = filter_dbl;  break;
    case AV_SAMPLE_FMT_FLTP: s->filter = filter_fltp; break;
    case AV_SAMPLE_FMT_DBLP: s->filter = filter_dblp; break;
    }

    return 0;
}

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
    AVFilterContext *ctx = inlink->dst;
    AVFilterLink *outlink = ctx->outputs[0];
    AudioContrastContext *s = ctx->priv;
    AVFrame *out;

    if (av_frame_is_writable(in)) {
        out = in;
    } else {
        out = ff_get_audio_buffer(outlink, in->nb_samples);
        if (!out) {
            av_frame_free(&in);
            return AVERROR(ENOMEM);
        }
        av_frame_copy_props(out, in);
    }

    s->filter((void **)out->extended_data, (const void **)in->extended_data,
              in->nb_samples, in->channels, s->contrast / 750);

    if (out != in)
        av_frame_free(&in);

    return ff_filter_frame(outlink, out);
}

static const AVFilterPad inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
    { NULL }
};

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

AVFilter ff_af_acontrast = {
    .name           = "acontrast",
    .description    = NULL_IF_CONFIG_SMALL("Simple audio dynamic range compression/expansion filter."),
    .query_formats  = query_formats,
    .priv_size      = sizeof(AudioContrastContext),
    .priv_class     = &acontrast_class,
    .inputs         = inputs,
    .outputs        = outputs,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2008 Rob Sykes
3			* Copyright (c) 2017 Paul B Mahol
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			#include "libavutil/channel_layout.h"
23			#include "libavutil/opt.h"
24			#include "avfilter.h"
25			#include "audio.h"
26			#include "formats.h"
27
28			typedef struct AudioContrastContext {
29			const AVClass *class;
30			float contrast;
31			void (filter)(void dst, const void *src,
32			int nb_samples, int channels, float contrast);
33			} AudioContrastContext;
34
35			#define OFFSET(x) offsetof(AudioContrastContext, x)
36			#define A AV_OPT_FLAG_AUDIO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM
37
38			static const AVOption acontrast_options[] = {
39			{ "contrast", "set contrast", OFFSET(contrast), AV_OPT_TYPE_FLOAT, {.dbl=33}, 0, 100, A },
40			{ NULL }
41			};
42
43			AVFILTER_DEFINE_CLASS(acontrast);
44
45			static int query_formats(AVFilterContext *ctx)
46			{
47			AVFilterFormats *formats = NULL;
48			AVFilterChannelLayouts *layouts = NULL;
49			static const enum AVSampleFormat sample_fmts[] = {
50			AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
51			AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBLP,
52			AV_SAMPLE_FMT_NONE
53			};
54			int ret;
55
56			formats = ff_make_format_list(sample_fmts);
57			if (!formats)
58			return AVERROR(ENOMEM);
59			ret = ff_set_common_formats(ctx, formats);
60			if (ret < 0)
61			return ret;
62
63			layouts = ff_all_channel_counts();
64			if (!layouts)
65			return AVERROR(ENOMEM);
66
67			ret = ff_set_common_channel_layouts(ctx, layouts);
68			if (ret < 0)
69			return ret;
70
71			formats = ff_all_samplerates();
72			return ff_set_common_samplerates(ctx, formats);
73			}
74
75			static void filter_flt(void d, const void s,
76			int nb_samples, int channels,
77			float contrast)
78			{
79			const float *src = s[0];
80			float *dst = d[0];
81			int n, c;
82
83			for (n = 0; n < nb_samples; n++) {
84			for (c = 0; c < channels; c++) {
85			float d = src[c] * M_PI_2;
86
87			dst[c] = sinf(d + contrast * sinf(d * 4));
88			}
89
90			dst += c;
91			src += c;
92			}
93			}
94
95			static void filter_dbl(void d, const void s,
96			int nb_samples, int channels,
97			float contrast)
98			{
99			const double *src = s[0];
100			double *dst = d[0];
101			int n, c;
102
103			for (n = 0; n < nb_samples; n++) {
104			for (c = 0; c < channels; c++) {
105			double d = src[c] * M_PI_2;
106
107			dst[c] = sin(d + contrast * sin(d * 4));
108			}
109
110			dst += c;
111			src += c;
112			}
113			}
114
115			static void filter_fltp(void d, const void s,
116			int nb_samples, int channels,
117			float contrast)
118			{
119			int n, c;
120
121			for (c = 0; c < channels; c++) {
122			const float *src = s[c];
123			float *dst = d[c];
124
125			for (n = 0; n < nb_samples; n++) {
126			float d = src[n] * M_PI_2;
127
128			dst[n] = sinf(d + contrast * sinf(d * 4));
129			}
130			}
131			}
132
133			static void filter_dblp(void d, const void s,
134			int nb_samples, int channels,
135			float contrast)
136			{
137			int n, c;
138
139			for (c = 0; c < channels; c++) {
140			const double *src = s[c];
141			double *dst = d[c];
142
143			for (n = 0; n < nb_samples; n++) {
144			double d = src[n] * M_PI_2;
145
146			dst[n] = sin(d + contrast * sin(d * 4));
147			}
148			}
149			}
150
151			static int config_input(AVFilterLink *inlink)
152			{
153			AVFilterContext *ctx = inlink->dst;
154			AudioContrastContext *s = ctx->priv;
155
156			switch (inlink->format) {
157			case AV_SAMPLE_FMT_FLT: s->filter = filter_flt; break;
158			case AV_SAMPLE_FMT_DBL: s->filter = filter_dbl; break;
159			case AV_SAMPLE_FMT_FLTP: s->filter = filter_fltp; break;
160			case AV_SAMPLE_FMT_DBLP: s->filter = filter_dblp; break;
161			}
162
163			return 0;
164			}
165
166			static int filter_frame(AVFilterLink inlink, AVFrame in)
167			{
168			AVFilterContext *ctx = inlink->dst;
169			AVFilterLink *outlink = ctx->outputs[0];
170			AudioContrastContext *s = ctx->priv;
171			AVFrame *out;
172
173			if (av_frame_is_writable(in)) {
174			out = in;
175			} else {
176			out = ff_get_audio_buffer(outlink, in->nb_samples);
177			if (!out) {
178			av_frame_free(&in);
179			return AVERROR(ENOMEM);
180			}
181			av_frame_copy_props(out, in);
182			}
183
184			s->filter((void )out->extended_data, (const void )in->extended_data,
185			in->nb_samples, in->channels, s->contrast / 750);
186
187			if (out != in)
188			av_frame_free(&in);
189
190			return ff_filter_frame(outlink, out);
191			}
192
193			static const AVFilterPad inputs[] = {
194			{
195			.name = "default",
196			.type = AVMEDIA_TYPE_AUDIO,
197			.filter_frame = filter_frame,
198			.config_props = config_input,
199			},
200			{ NULL }
201			};
202
203			static const AVFilterPad outputs[] = {
204			{
205			.name = "default",
206			.type = AVMEDIA_TYPE_AUDIO,
207			},
208			{ NULL }
209			};
210
211			AVFilter ff_af_acontrast = {
212			.name = "acontrast",
213			.description = NULL_IF_CONFIG_SMALL("Simple audio dynamic range compression/expansion filter."),
214			.query_formats = query_formats,
215			.priv_size = sizeof(AudioContrastContext),
216			.priv_class = &acontrast_class,
217			.inputs = inputs,
218			.outputs = outputs,
219			};