FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavfilter/trim.c	Lines:	122	126	96.8 %
Date:	2021-01-20 23:14:43	Branches:	99	116	85.3 %


/*
 * 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 <stdint.h>

#include "config.h"

#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/log.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"

#include "audio.h"
#include "avfilter.h"
#include "internal.h"

typedef struct TrimContext {
    const AVClass *class;

    /*
     * AVOptions
     */
    int64_t duration;
    int64_t start_time, end_time;
    int64_t start_frame, end_frame;
    /*
     * in the link timebase for video,
     * in 1/samplerate for audio
     */
    int64_t start_pts, end_pts;
    int64_t start_sample, end_sample;

    /*
     * number of video frames that arrived on this filter so far
     */
    int64_t nb_frames;
    /*
     * number of audio samples that arrived on this filter so far
     */
    int64_t nb_samples;
    /*
     * timestamp of the first frame in the output, in the timebase units
     */
    int64_t first_pts;
    /*
     * duration in the timebase units
     */
    int64_t duration_tb;

    int64_t next_pts;

    int eof;
} TrimContext;

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

    s->first_pts = AV_NOPTS_VALUE;

    return 0;
}

static int config_input(AVFilterLink *inlink)
{
    AVFilterContext *ctx = inlink->dst;
    TrimContext       *s = ctx->priv;
    AVRational tb = (inlink->type == AVMEDIA_TYPE_VIDEO) ?
                     inlink->time_base : (AVRational){ 1, inlink->sample_rate };

    if (s->start_time != INT64_MAX) {
        int64_t start_pts = av_rescale_q(s->start_time, AV_TIME_BASE_Q, tb);
        if (s->start_pts == AV_NOPTS_VALUE || start_pts < s->start_pts)
            s->start_pts = start_pts;
    }
    if (s->end_time != INT64_MAX) {
        int64_t end_pts = av_rescale_q(s->end_time, AV_TIME_BASE_Q, tb);
        if (s->end_pts == AV_NOPTS_VALUE || end_pts > s->end_pts)
            s->end_pts = end_pts;
    }
    if (s->duration)
        s->duration_tb = av_rescale_q(s->duration, AV_TIME_BASE_Q, tb);

    return 0;
}

#define OFFSET(x) offsetof(TrimContext, x)
#define COMMON_OPTS                                                                                                                                                         \
    { "start",       "Timestamp of the first frame that "                                                                                                        \
        "should be passed",                                              OFFSET(start_time),  AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX },    INT64_MIN, INT64_MAX, FLAGS }, \
    { "starti",      "Timestamp of the first frame that "                                                                                                        \
        "should be passed",                                              OFFSET(start_time),  AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX },    INT64_MIN, INT64_MAX, FLAGS }, \
    { "end",         "Timestamp of the first frame that "                                                                                                        \
        "should be dropped again",                                       OFFSET(end_time),    AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX },    INT64_MIN, INT64_MAX, FLAGS }, \
    { "endi",        "Timestamp of the first frame that "                                                                                                        \
        "should be dropped again",                                       OFFSET(end_time),    AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX },    INT64_MIN, INT64_MAX, FLAGS }, \
    { "start_pts",   "Timestamp of the first frame that should be "                                                                                                         \
       " passed",                                                        OFFSET(start_pts),   AV_OPT_TYPE_INT64,  { .i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, FLAGS }, \
    { "end_pts",     "Timestamp of the first frame that should be "                                                                                                         \
        "dropped again",                                                 OFFSET(end_pts),     AV_OPT_TYPE_INT64,  { .i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, FLAGS }, \
    { "duration",    "Maximum duration of the output",                   OFFSET(duration),    AV_OPT_TYPE_DURATION, { .i64 = 0 },                    0, INT64_MAX, FLAGS }, \
    { "durationi",   "Maximum duration of the output",                   OFFSET(duration),    AV_OPT_TYPE_DURATION, { .i64 = 0 },                    0, INT64_MAX, FLAGS },


#if CONFIG_TRIM_FILTER
static int trim_filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
    AVFilterContext *ctx = inlink->dst;
    TrimContext       *s = ctx->priv;
    int drop;

    /* drop everything if EOF has already been returned */
    if (s->eof) {
        av_frame_free(&frame);
        return 0;
    }

    if (s->start_frame >= 0 || s->start_pts != AV_NOPTS_VALUE) {
        drop = 1;
        if (s->start_frame >= 0 && s->nb_frames >= s->start_frame)
            drop = 0;
        if (s->start_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE &&
            frame->pts >= s->start_pts)
            drop = 0;
        if (drop)
            goto drop;
    }

    if (s->first_pts == AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE)
        s->first_pts = frame->pts;

    if (s->end_frame != INT64_MAX || s->end_pts != AV_NOPTS_VALUE || s->duration_tb) {
        drop = 1;

        if (s->end_frame != INT64_MAX && s->nb_frames < s->end_frame)
            drop = 0;
        if (s->end_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE &&
            frame->pts < s->end_pts)
            drop = 0;
        if (s->duration_tb && frame->pts != AV_NOPTS_VALUE &&
            frame->pts - s->first_pts < s->duration_tb)
            drop = 0;

        if (drop) {
            s->eof = 1;
            ff_avfilter_link_set_out_status(inlink, AVERROR_EOF, AV_NOPTS_VALUE);
            goto drop;
        }
    }

    s->nb_frames++;

    return ff_filter_frame(ctx->outputs[0], frame);

drop:
    s->nb_frames++;
    av_frame_free(&frame);
    return 0;
}

#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
static const AVOption trim_options[] = {
    COMMON_OPTS
    { "start_frame", "Number of the first frame that should be passed "
        "to the output",                                                 OFFSET(start_frame), AV_OPT_TYPE_INT64,  { .i64 = -1 },       -1, INT64_MAX, FLAGS },
    { "end_frame",   "Number of the first frame that should be dropped "
        "again",                                                         OFFSET(end_frame),   AV_OPT_TYPE_INT64,  { .i64 = INT64_MAX }, 0, INT64_MAX, FLAGS },
    { NULL }
};
#undef FLAGS

AVFILTER_DEFINE_CLASS(trim);

static const AVFilterPad trim_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = trim_filter_frame,
        .config_props = config_input,
    },
    { NULL }
};

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

AVFilter ff_vf_trim = {
    .name        = "trim",
    .description = NULL_IF_CONFIG_SMALL("Pick one continuous section from the input, drop the rest."),
    .init        = init,
    .priv_size   = sizeof(TrimContext),
    .priv_class  = &trim_class,
    .inputs      = trim_inputs,
    .outputs     = trim_outputs,
};
#endif // CONFIG_TRIM_FILTER

#if CONFIG_ATRIM_FILTER
static int atrim_filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
    AVFilterContext *ctx = inlink->dst;
    TrimContext       *s = ctx->priv;
    int64_t start_sample, end_sample;
    int64_t pts;
    int drop;

    /* drop everything if EOF has already been returned */
    if (s->eof) {
        av_frame_free(&frame);
        return 0;
    }

    if (frame->pts != AV_NOPTS_VALUE)
        pts = av_rescale_q(frame->pts, inlink->time_base,
                           (AVRational){ 1, inlink->sample_rate });
    else
        pts = s->next_pts;
    s->next_pts = pts + frame->nb_samples;

    /* check if at least a part of the frame is after the start time */
    if (s->start_sample < 0 && s->start_pts == AV_NOPTS_VALUE) {
        start_sample = 0;
    } else {
        drop = 1;
        start_sample = frame->nb_samples;

        if (s->start_sample >= 0 &&
            s->nb_samples + frame->nb_samples > s->start_sample) {
            drop         = 0;
            start_sample = FFMIN(start_sample, s->start_sample - s->nb_samples);
        }

        if (s->start_pts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE &&
            pts + frame->nb_samples > s->start_pts) {
            drop = 0;
            start_sample = FFMIN(start_sample, s->start_pts - pts);
        }

        if (drop)
            goto drop;
    }

    if (s->first_pts == AV_NOPTS_VALUE)
        s->first_pts = pts + start_sample;

    /* check if at least a part of the frame is before the end time */
    if (s->end_sample == INT64_MAX && s->end_pts == AV_NOPTS_VALUE && !s->duration_tb) {
        end_sample = frame->nb_samples;
    } else {
        drop       = 1;
        end_sample = 0;

        if (s->end_sample != INT64_MAX &&
            s->nb_samples < s->end_sample) {
            drop       = 0;
            end_sample = FFMAX(end_sample, s->end_sample - s->nb_samples);
        }

        if (s->end_pts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE &&
            pts < s->end_pts) {
            drop       = 0;
            end_sample = FFMAX(end_sample, s->end_pts - pts);
        }

        if (s->duration_tb && pts - s->first_pts < s->duration_tb) {
            drop       = 0;
            end_sample = FFMAX(end_sample, s->first_pts + s->duration_tb - pts);
        }

        if (drop) {
            s->eof = 1;
            ff_avfilter_link_set_out_status(inlink, AVERROR_EOF, AV_NOPTS_VALUE);
            goto drop;
        }
    }

    s->nb_samples += frame->nb_samples;
    start_sample   = FFMAX(0, start_sample);
    end_sample     = FFMIN(frame->nb_samples, end_sample);
    if (start_sample >= end_sample || !frame->nb_samples)
        goto drop;

    if (start_sample) {
        AVFrame *out = ff_get_audio_buffer(ctx->outputs[0], end_sample - start_sample);
        if (!out) {
            av_frame_free(&frame);
            return AVERROR(ENOMEM);
        }

        av_frame_copy_props(out, frame);
        av_samples_copy(out->extended_data, frame->extended_data, 0, start_sample,
                        out->nb_samples, inlink->channels,
                        frame->format);
        if (out->pts != AV_NOPTS_VALUE)
            out->pts += av_rescale_q(start_sample, (AVRational){ 1, out->sample_rate },
                                     inlink->time_base);

        av_frame_free(&frame);
        frame = out;
    } else
        frame->nb_samples = end_sample;

    return ff_filter_frame(ctx->outputs[0], frame);

drop:
    s->nb_samples += frame->nb_samples;
    av_frame_free(&frame);
    return 0;
}

#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
static const AVOption atrim_options[] = {
    COMMON_OPTS
    { "start_sample", "Number of the first audio sample that should be "
        "passed to the output",                                          OFFSET(start_sample), AV_OPT_TYPE_INT64,  { .i64 = -1 },       -1, INT64_MAX, FLAGS },
    { "end_sample",   "Number of the first audio sample that should be "
        "dropped again",                                                 OFFSET(end_sample),   AV_OPT_TYPE_INT64,  { .i64 = INT64_MAX }, 0, INT64_MAX, FLAGS },
    { NULL }
};
#undef FLAGS

AVFILTER_DEFINE_CLASS(atrim);

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

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

AVFilter ff_af_atrim = {
    .name        = "atrim",
    .description = NULL_IF_CONFIG_SMALL("Pick one continuous section from the input, drop the rest."),
    .init        = init,
    .priv_size   = sizeof(TrimContext),
    .priv_class  = &atrim_class,
    .inputs      = atrim_inputs,
    .outputs     = atrim_outputs,
};
#endif // CONFIG_ATRIM_FILTER


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* This file is part of FFmpeg.
3			*
4			* FFmpeg is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU Lesser General Public
6			* License as published by the Free Software Foundation; either
7			* version 2.1 of the License, or (at your option) any later version.
8			*
9			* FFmpeg is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* Lesser General Public License for more details.
13			*
14			* You should have received a copy of the GNU Lesser General Public
15			* License along with FFmpeg; if not, write to the Free Software
16			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17			*/
18
19			#include <stdint.h>
20
21			#include "config.h"
22
23			#include "libavutil/avassert.h"
24			#include "libavutil/channel_layout.h"
25			#include "libavutil/common.h"
26			#include "libavutil/log.h"
27			#include "libavutil/mathematics.h"
28			#include "libavutil/opt.h"
29			#include "libavutil/samplefmt.h"
30
31			#include "audio.h"
32			#include "avfilter.h"
33			#include "internal.h"
34
35			typedef struct TrimContext {
36			const AVClass *class;
37
38			/*
39			* AVOptions
40			*/
41			int64_t duration;
42			int64_t start_time, end_time;
43			int64_t start_frame, end_frame;
44			/*
45			* in the link timebase for video,
46			* in 1/samplerate for audio
47			*/
48			int64_t start_pts, end_pts;
49			int64_t start_sample, end_sample;
50
51			/*
52			* number of video frames that arrived on this filter so far
53			*/
54			int64_t nb_frames;
55			/*
56			* number of audio samples that arrived on this filter so far
57			*/
58			int64_t nb_samples;
59			/*
60			* timestamp of the first frame in the output, in the timebase units
61			*/
62			int64_t first_pts;
63			/*
64			* duration in the timebase units
65			*/
66			int64_t duration_tb;
67
68			int64_t next_pts;
69
70			int eof;
71			} TrimContext;
72
73		516	static av_cold int init(AVFilterContext *ctx)
74			{
75		516	TrimContext *s = ctx->priv;
76
77		516	s->first_pts = AV_NOPTS_VALUE;
78
79		516	return 0;
80			}
81
82		516	static int config_input(AVFilterLink *inlink)
83			{
84		516	AVFilterContext *ctx = inlink->dst;
85		516	TrimContext *s = ctx->priv;
86	✓✓	516	AVRational tb = (inlink->type == AVMEDIA_TYPE_VIDEO) ?
87		411	inlink->time_base : (AVRational){ 1, inlink->sample_rate };
88
89	✓✓	516	if (s->start_time != INT64_MAX) {
90		24	int64_t start_pts = av_rescale_q(s->start_time, AV_TIME_BASE_Q, tb);
91	✗✓✗✗	24	if (s->start_pts == AV_NOPTS_VALUE \|\| start_pts < s->start_pts)
92		24	s->start_pts = start_pts;
93			}
94	✓✓	516	if (s->end_time != INT64_MAX) {
95		4	int64_t end_pts = av_rescale_q(s->end_time, AV_TIME_BASE_Q, tb);
96	✗✓✗✗	4	if (s->end_pts == AV_NOPTS_VALUE \|\| end_pts > s->end_pts)
97		4	s->end_pts = end_pts;
98			}
99	✓✓	516	if (s->duration)
100		160	s->duration_tb = av_rescale_q(s->duration, AV_TIME_BASE_Q, tb);
101
102		516	return 0;
103			}
104
105			#define OFFSET(x) offsetof(TrimContext, x)
106			#define COMMON_OPTS \
107			{ "start", "Timestamp of the first frame that " \
108			"should be passed", OFFSET(start_time), AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX }, INT64_MIN, INT64_MAX, FLAGS }, \
109			{ "starti", "Timestamp of the first frame that " \
110			"should be passed", OFFSET(start_time), AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX }, INT64_MIN, INT64_MAX, FLAGS }, \
111			{ "end", "Timestamp of the first frame that " \
112			"should be dropped again", OFFSET(end_time), AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX }, INT64_MIN, INT64_MAX, FLAGS }, \
113			{ "endi", "Timestamp of the first frame that " \
114			"should be dropped again", OFFSET(end_time), AV_OPT_TYPE_DURATION, { .i64 = INT64_MAX }, INT64_MIN, INT64_MAX, FLAGS }, \
115			{ "start_pts", "Timestamp of the first frame that should be " \
116			" passed", OFFSET(start_pts), AV_OPT_TYPE_INT64, { .i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, FLAGS }, \
117			{ "end_pts", "Timestamp of the first frame that should be " \
118			"dropped again", OFFSET(end_pts), AV_OPT_TYPE_INT64, { .i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, FLAGS }, \
119			{ "duration", "Maximum duration of the output", OFFSET(duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT64_MAX, FLAGS }, \
120			{ "durationi", "Maximum duration of the output", OFFSET(duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT64_MAX, FLAGS },
121
122
123			#if CONFIG_TRIM_FILTER
124		3732	static int trim_filter_frame(AVFilterLink inlink, AVFrame frame)
125			{
126		3732	AVFilterContext *ctx = inlink->dst;
127		3732	TrimContext *s = ctx->priv;
128			int drop;
129
130			/* drop everything if EOF has already been returned */
131	✓✓	3732	if (s->eof) {
132		14	av_frame_free(&frame);
133		14	return 0;
134			}
135
136	✓✓✓✓	3718	if (s->start_frame >= 0 \|\| s->start_pts != AV_NOPTS_VALUE) {
137		124	drop = 1;
138	✓✓✓✓	124	if (s->start_frame >= 0 && s->nb_frames >= s->start_frame)
139		18	drop = 0;
140	✓✓✓✗	124	if (s->start_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE &&
141	✓✓	113	frame->pts >= s->start_pts)
142		98	drop = 0;
143	✓✓	124	if (drop)
144		14	goto drop;
145			}
146
147	✓✓✓✗	3704	if (s->first_pts == AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE)
148		105	s->first_pts = frame->pts;
149
150	✓✓✓✓ ✓✓	3704	if (s->end_frame != INT64_MAX \|\| s->end_pts != AV_NOPTS_VALUE \|\| s->duration_tb) {
151		3617	drop = 1;
152
153	✓✓✓✓	3617	if (s->end_frame != INT64_MAX && s->nb_frames < s->end_frame)
154		9	drop = 0;
155	✓✓✓✗	3617	if (s->end_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE &&
156	✓✓	13	frame->pts < s->end_pts)
157		11	drop = 0;
158	✓✓✓✗	3617	if (s->duration_tb && frame->pts != AV_NOPTS_VALUE &&
159	✓✓	3596	frame->pts - s->first_pts < s->duration_tb)
160		3499	drop = 0;
161
162	✓✓	3617	if (drop) {
163		100	s->eof = 1;
164		100	ff_avfilter_link_set_out_status(inlink, AVERROR_EOF, AV_NOPTS_VALUE);
165		100	goto drop;
166			}
167			}
168
169		3604	s->nb_frames++;
170
171		3604	return ff_filter_frame(ctx->outputs[0], frame);
172
173		114	drop:
174		114	s->nb_frames++;
175		114	av_frame_free(&frame);
176		114	return 0;
177			}
178
179			#define FLAGS AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_FILTERING_PARAM
180			static const AVOption trim_options[] = {
181			COMMON_OPTS
182			{ "start_frame", "Number of the first frame that should be passed "
183			"to the output", OFFSET(start_frame), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS },
184			{ "end_frame", "Number of the first frame that should be dropped "
185			"again", OFFSET(end_frame), AV_OPT_TYPE_INT64, { .i64 = INT64_MAX }, 0, INT64_MAX, FLAGS },
186			{ NULL }
187			};
188			#undef FLAGS
189
190			AVFILTER_DEFINE_CLASS(trim);
191
192			static const AVFilterPad trim_inputs[] = {
193			{
194			.name = "default",
195			.type = AVMEDIA_TYPE_VIDEO,
196			.filter_frame = trim_filter_frame,
197			.config_props = config_input,
198			},
199			{ NULL }
200			};
201
202			static const AVFilterPad trim_outputs[] = {
203			{
204			.name = "default",
205			.type = AVMEDIA_TYPE_VIDEO,
206			},
207			{ NULL }
208			};
209
210			AVFilter ff_vf_trim = {
211			.name = "trim",
212			.description = NULL_IF_CONFIG_SMALL("Pick one continuous section from the input, drop the rest."),
213			.init = init,
214			.priv_size = sizeof(TrimContext),
215			.priv_class = &trim_class,
216			.inputs = trim_inputs,
217			.outputs = trim_outputs,
218			};
219			#endif // CONFIG_TRIM_FILTER
220
221			#if CONFIG_ATRIM_FILTER
222		8965	static int atrim_filter_frame(AVFilterLink inlink, AVFrame frame)
223			{
224		8965	AVFilterContext *ctx = inlink->dst;
225		8965	TrimContext *s = ctx->priv;
226			int64_t start_sample, end_sample;
227			int64_t pts;
228			int drop;
229
230			/* drop everything if EOF has already been returned */
231	✓✓	8965	if (s->eof) {
232		39	av_frame_free(&frame);
233		39	return 0;
234			}
235
236	✓✗	8926	if (frame->pts != AV_NOPTS_VALUE)
237		8926	pts = av_rescale_q(frame->pts, inlink->time_base,
238		8926	(AVRational){ 1, inlink->sample_rate });
239			else
240			pts = s->next_pts;
241		8926	s->next_pts = pts + frame->nb_samples;
242
243			/* check if at least a part of the frame is after the start time */
244	✓✓✓✓	8926	if (s->start_sample < 0 && s->start_pts == AV_NOPTS_VALUE) {
245		7134	start_sample = 0;
246			} else {
247		1792	drop = 1;
248		1792	start_sample = frame->nb_samples;
249
250	✓✓	1792	if (s->start_sample >= 0 &&
251	✓✓	8	s->nb_samples + frame->nb_samples > s->start_sample) {
252		7	drop = 0;
253		7	start_sample = FFMIN(start_sample, s->start_sample - s->nb_samples);
254			}
255
256	✓✓✓✗	1792	if (s->start_pts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE &&
257	✓✓	1790	pts + frame->nb_samples > s->start_pts) {
258		1458	drop = 0;
259		1458	start_sample = FFMIN(start_sample, s->start_pts - pts);
260			}
261
262	✓✓	1792	if (drop)
263		331	goto drop;
264			}
265
266	✓✓	8595	if (s->first_pts == AV_NOPTS_VALUE)
267		411	s->first_pts = pts + start_sample;
268
269			/* check if at least a part of the frame is before the end time */
270	✓✓✓✓ ✓✓	8595	if (s->end_sample == INT64_MAX && s->end_pts == AV_NOPTS_VALUE && !s->duration_tb) {
271		1446	end_sample = frame->nb_samples;
272			} else {
273		7149	drop = 1;
274		7149	end_sample = 0;
275
276	✓✓	7149	if (s->end_sample != INT64_MAX &&
277	✓✓	2888	s->nb_samples < s->end_sample) {
278		2554	drop = 0;
279		2554	end_sample = FFMAX(end_sample, s->end_sample - s->nb_samples);
280			}
281
282	✓✓✓✗	7149	if (s->end_pts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE &&
283	✓✓	11	pts < s->end_pts) {
284		9	drop = 0;
285		9	end_sample = FFMAX(end_sample, s->end_pts - pts);
286			}
287
288	✓✓✓✓	7149	if (s->duration_tb && pts - s->first_pts < s->duration_tb) {
289		4197	drop = 0;
290		4197	end_sample = FFMAX(end_sample, s->first_pts + s->duration_tb - pts);
291			}
292
293	✓✓	7149	if (drop) {
294		393	s->eof = 1;
295		393	ff_avfilter_link_set_out_status(inlink, AVERROR_EOF, AV_NOPTS_VALUE);
296		393	goto drop;
297			}
298			}
299
300		8202	s->nb_samples += frame->nb_samples;
301		8202	start_sample = FFMAX(0, start_sample);
302		8202	end_sample = FFMIN(frame->nb_samples, end_sample);
303	✓✗✗✓	8202	if (start_sample >= end_sample \|\| !frame->nb_samples)
304			goto drop;
305
306	✓✓	8202	if (start_sample) {
307		6	AVFrame *out = ff_get_audio_buffer(ctx->outputs[0], end_sample - start_sample);
308	✗✓	6	if (!out) {
309			av_frame_free(&frame);
310			return AVERROR(ENOMEM);
311			}
312
313		6	av_frame_copy_props(out, frame);
314		6	av_samples_copy(out->extended_data, frame->extended_data, 0, start_sample,
315			out->nb_samples, inlink->channels,
316		6	frame->format);
317	✓✗	6	if (out->pts != AV_NOPTS_VALUE)
318		6	out->pts += av_rescale_q(start_sample, (AVRational){ 1, out->sample_rate },
319			inlink->time_base);
320
321		6	av_frame_free(&frame);
322		6	frame = out;
323			} else
324		8196	frame->nb_samples = end_sample;
325
326		8202	return ff_filter_frame(ctx->outputs[0], frame);
327
328		724	drop:
329		724	s->nb_samples += frame->nb_samples;
330		724	av_frame_free(&frame);
331		724	return 0;
332			}
333
334			#define FLAGS AV_OPT_FLAG_AUDIO_PARAM \| AV_OPT_FLAG_FILTERING_PARAM
335			static const AVOption atrim_options[] = {
336			COMMON_OPTS
337			{ "start_sample", "Number of the first audio sample that should be "
338			"passed to the output", OFFSET(start_sample), AV_OPT_TYPE_INT64, { .i64 = -1 }, -1, INT64_MAX, FLAGS },
339			{ "end_sample", "Number of the first audio sample that should be "
340			"dropped again", OFFSET(end_sample), AV_OPT_TYPE_INT64, { .i64 = INT64_MAX }, 0, INT64_MAX, FLAGS },
341			{ NULL }
342			};
343			#undef FLAGS
344
345			AVFILTER_DEFINE_CLASS(atrim);
346
347			static const AVFilterPad atrim_inputs[] = {
348			{
349			.name = "default",
350			.type = AVMEDIA_TYPE_AUDIO,
351			.filter_frame = atrim_filter_frame,
352			.config_props = config_input,
353			},
354			{ NULL }
355			};
356
357			static const AVFilterPad atrim_outputs[] = {
358			{
359			.name = "default",
360			.type = AVMEDIA_TYPE_AUDIO,
361			},
362			{ NULL }
363			};
364
365			AVFilter ff_af_atrim = {
366			.name = "atrim",
367			.description = NULL_IF_CONFIG_SMALL("Pick one continuous section from the input, drop the rest."),
368			.init = init,
369			.priv_size = sizeof(TrimContext),
370			.priv_class = &atrim_class,
371			.inputs = atrim_inputs,
372			.outputs = atrim_outputs,
373			};
374			#endif // CONFIG_ATRIM_FILTER