mpv/audio/fmt-conversion.c

/*
 * This file is part of mpv.
 *
 * mpv 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.
 *
 * mpv 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 mpv.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <libavutil/avutil.h>
#include <libavutil/samplefmt.h>
#include "format.h"
#include "fmt-conversion.h"

static const struct {
    enum AVSampleFormat sample_fmt;
    int fmt;
} audio_conversion_map[] = {
    {AV_SAMPLE_FMT_U8,    AF_FORMAT_U8},
    {AV_SAMPLE_FMT_S16,   AF_FORMAT_S16},
    {AV_SAMPLE_FMT_S32,   AF_FORMAT_S32},
    {AV_SAMPLE_FMT_S64,   AF_FORMAT_S64},
    {AV_SAMPLE_FMT_FLT,   AF_FORMAT_FLOAT},
    {AV_SAMPLE_FMT_DBL,   AF_FORMAT_DOUBLE},

    {AV_SAMPLE_FMT_U8P,   AF_FORMAT_U8P},
    {AV_SAMPLE_FMT_S16P,  AF_FORMAT_S16P},
    {AV_SAMPLE_FMT_S32P,  AF_FORMAT_S32P},
    {AV_SAMPLE_FMT_S64P,  AF_FORMAT_S64P},
    {AV_SAMPLE_FMT_FLTP,  AF_FORMAT_FLOATP},
    {AV_SAMPLE_FMT_DBLP,  AF_FORMAT_DOUBLEP},

    {AV_SAMPLE_FMT_NONE,  0},
};

enum AVSampleFormat af_to_avformat(int fmt)
{
    for (int i = 0; audio_conversion_map[i].fmt; i++) {
        if (audio_conversion_map[i].fmt == fmt)
            return audio_conversion_map[i].sample_fmt;
    }
    return AV_SAMPLE_FMT_NONE;
}

int af_from_avformat(enum AVSampleFormat sample_fmt)
{
    for (int i = 0; audio_conversion_map[i].fmt; i++) {
        if (audio_conversion_map[i].sample_fmt == sample_fmt)
            return audio_conversion_map[i].fmt;
    }
    return 0;
}