Function hb_audio_encoder_get_fallback_for_passthru

libhb/common.c:3184–3231

for a valid passthru, return the matching encoder for that codec (if any), else return -1 (i.e. drop the track)

// for a valid passthru, return the matching encoder for that codec (if any),
// else return -1 (i.e. drop the track)
int hb_audio_encoder_get_fallback_for_passthru(int passthru)
{
    int gid;
    const hb_encoder_t *audio_encoder = NULL;
    switch (passthru)
    {
        case HB_ACODEC_ALAC_PASS:
            gid = HB_GID_ACODEC_ALAC;
            break;

        case HB_ACODEC_AAC_PASS:
            gid = HB_GID_ACODEC_AAC;
            break;

        case HB_ACODEC_AC3_PASS:
            gid = HB_GID_ACODEC_AC3;
            break;

        case HB_ACODEC_EAC3_PASS:
            gid = HB_GID_ACODEC_EAC3;
            break;

        case HB_ACODEC_FLAC_PASS:
            gid = HB_GID_ACODEC_FLAC;
            break;

        case HB_ACODEC_MP3_PASS:
            gid = HB_GID_ACODEC_MP3;
            break;

        default:
            return HB_ACODEC_INVALID;
            break;
    }
    while ((audio_encoder = hb_audio_encoder_get_next(audio_encoder)) != NULL)
    {
        if (((hb_encoder_internal_t*)audio_encoder)->gid == gid)
        {
            return audio_encoder->codec;
        }
    }

    // passthru tracks are often the second audio from the same source track
    // if we don't have an encoder matching the passthru codec, return INVALID
    // dropping the track, as well as ensuring that there is at least one
    // audio track in the output is then up to the UIs
    return HB_ACODEC_INVALID;
}

int hb_audio_encoder_get_default(int muxer)
{