GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/af_aformat.c Lines: 18 21 85.7 %
Date: 2020-08-14 10:39:37 Branches: 33 46 71.7 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2011 Mina Nagy Zaki
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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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 * format audio filter
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 */
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#include "libavutil/avstring.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "audio.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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typedef struct AFormatContext {
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    const AVClass   *class;
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    AVFilterFormats *formats;
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    AVFilterFormats *sample_rates;
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    AVFilterChannelLayouts *channel_layouts;
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    char *formats_str;
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    char *sample_rates_str;
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    char *channel_layouts_str;
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} AFormatContext;
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#define OFFSET(x) offsetof(AFormatContext, x)
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#define A AV_OPT_FLAG_AUDIO_PARAM
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#define F AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption aformat_options[] = {
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    { "sample_fmts",     "A '|'-separated list of sample formats.",  OFFSET(formats_str),         AV_OPT_TYPE_STRING, .flags = A|F },
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    { "f",               "A '|'-separated list of sample formats.",  OFFSET(formats_str),         AV_OPT_TYPE_STRING, .flags = A|F },
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    { "sample_rates",    "A '|'-separated list of sample rates.",    OFFSET(sample_rates_str),    AV_OPT_TYPE_STRING, .flags = A|F },
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    { "r",               "A '|'-separated list of sample rates.",    OFFSET(sample_rates_str),    AV_OPT_TYPE_STRING, .flags = A|F },
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    { "channel_layouts", "A '|'-separated list of channel layouts.", OFFSET(channel_layouts_str), AV_OPT_TYPE_STRING, .flags = A|F },
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    { "cl",              "A '|'-separated list of channel layouts.", OFFSET(channel_layouts_str), AV_OPT_TYPE_STRING, .flags = A|F },
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    { NULL }
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};
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AVFILTER_DEFINE_CLASS(aformat);
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#define PARSE_FORMATS(str, type, list, add_to_list, unref_fn, get_fmt, none, desc)    \
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do {                                                                        \
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    char *next, *cur = str, sep;                                            \
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    int ret;                                                                \
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                                                                            \
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    if (str && strchr(str, ',')) {                                          \
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        av_log(ctx, AV_LOG_WARNING, "This syntax is deprecated, use '|' to "\
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               "separate %s.\n", desc);                                     \
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        sep = ',';                                                          \
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    } else                                                                  \
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        sep = '|';                                                          \
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                                                                            \
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    while (cur) {                                                           \
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        type fmt;                                                           \
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        next = strchr(cur, sep);                                            \
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        if (next)                                                           \
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            *next++ = 0;                                                    \
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                                                                            \
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        if ((fmt = get_fmt(cur)) == none) {                                 \
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            av_log(ctx, AV_LOG_ERROR, "Error parsing " desc ": %s.\n", cur);\
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            return AVERROR(EINVAL);                                         \
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        }                                                                   \
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        if ((ret = add_to_list(&list, fmt)) < 0) {                          \
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            unref_fn(&list);                                                \
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            return ret;                                                     \
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        }                                                                   \
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                                                                            \
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        cur = next;                                                         \
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    }                                                                       \
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} while (0)
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static int get_sample_rate(const char *samplerate)
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{
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    int ret = strtol(samplerate, NULL, 0);
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    return FFMAX(ret, 0);
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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    AFormatContext *s = ctx->priv;
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    PARSE_FORMATS(s->formats_str, enum AVSampleFormat, s->formats,
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                  ff_add_format, ff_formats_unref, av_get_sample_fmt, AV_SAMPLE_FMT_NONE, "sample format");
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    PARSE_FORMATS(s->sample_rates_str, int, s->sample_rates, ff_add_format, ff_formats_unref,
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                  get_sample_rate, 0, "sample rate");
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    PARSE_FORMATS(s->channel_layouts_str, uint64_t, s->channel_layouts,
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                  ff_add_channel_layout, ff_channel_layouts_unref, av_get_channel_layout, 0,
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                  "channel layout");
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    return 0;
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}
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static int query_formats(AVFilterContext *ctx)
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{
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    AFormatContext *s = ctx->priv;
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    int ret;
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    ret = ff_set_common_formats(ctx, s->formats ? s->formats :
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                                            ff_all_formats(AVMEDIA_TYPE_AUDIO));
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    if (ret < 0)
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        return ret;
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    ret = ff_set_common_samplerates(ctx, s->sample_rates ? s->sample_rates :
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                                                     ff_all_samplerates());
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    if (ret < 0)
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        return ret;
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    return ff_set_common_channel_layouts(ctx, s->channel_layouts ? s->channel_layouts :
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                                                            ff_all_channel_counts());
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}
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static const AVFilterPad avfilter_af_aformat_inputs[] = {
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    {
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        .name = "default",
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        .type = AVMEDIA_TYPE_AUDIO,
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    },
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    { NULL }
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};
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static const AVFilterPad avfilter_af_aformat_outputs[] = {
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    {
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        .name = "default",
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        .type = AVMEDIA_TYPE_AUDIO
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    },
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    { NULL }
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};
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AVFilter ff_af_aformat = {
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    .name          = "aformat",
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    .description   = NULL_IF_CONFIG_SMALL("Convert the input audio to one of the specified formats."),
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    .init          = init,
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    .query_formats = query_formats,
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    .priv_size     = sizeof(AFormatContext),
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    .priv_class    = &aformat_class,
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    .inputs        = avfilter_af_aformat_inputs,
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    .outputs       = avfilter_af_aformat_outputs,
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};