C++ (Cpp) openmpt_module_select_subsongの例

コード例 #1

ファイル: mptwrap.cpp プロジェクト: cspiegel/qmmp-openmpt

MPTWrap::MPTWrap(QIODevice *device)
{
  mod = openmpt_module_create(callbacks, device, openmpt_log_func_silent, nullptr, nullptr);
  if(mod == nullptr) throw InvalidFile();

  openmpt_module_select_subsong(mod, -1);

  duration_ = openmpt_module_get_duration_seconds(mod) * 1000;
  title_ = copystr(openmpt_module_get_metadata(mod, "title"));
  format_ = copystr(openmpt_module_get_metadata(mod, "type_long"));
  pattern_count_ = openmpt_module_get_num_patterns(mod);
  instrument_count_ = openmpt_module_get_num_instruments(mod);
  sample_count_ = openmpt_module_get_num_samples(mod);
  channel_count_ = openmpt_module_get_num_channels(mod);

  for(int i = 0; i < openmpt_module_get_num_instruments(mod); i++)
  {
    instruments_.push_back(copystr(openmpt_module_get_instrument_name(mod, i)));
  }

  for(int i = 0; i < openmpt_module_get_num_samples(mod); i++)
  {
    samples_.push_back(copystr(openmpt_module_get_sample_name(mod, i)));
  }

  comment_ = copystr(openmpt_module_get_metadata(mod, "message_raw"));
}

コード例 #2

ファイル: libopenmpt.c プロジェクト: dsmudhar/FFmpeg

static int read_header_openmpt(AVFormatContext *s)
{
    AVStream *st;
    OpenMPTContext *openmpt = s->priv_data;
    int64_t size;
    char *buf;
#if OPENMPT_API_VERSION_AT_LEAST(0,3,0)
    int error;
#endif
    int ret;

    size = avio_size(s->pb);
    if (size <= 0)
        return AVERROR_INVALIDDATA;
    buf = av_malloc(size);
    if (!buf)
        return AVERROR(ENOMEM);
    size = avio_read(s->pb, buf, size);
    if (size < 0) {
        av_log(s, AV_LOG_ERROR, "Reading input buffer failed.\n");
        av_freep(&buf);
        return size;
    }

#if OPENMPT_API_VERSION_AT_LEAST(0,3,0)
    error = OPENMPT_ERROR_OK;
    openmpt->module = openmpt_module_create_from_memory2(buf, size, openmpt_logfunc, s, NULL, NULL, &error, NULL, NULL);
    av_freep(&buf);
    if (!openmpt->module) {
        if (error == OPENMPT_ERROR_OUT_OF_MEMORY)
            return AVERROR(ENOMEM);
        else if (error >= OPENMPT_ERROR_GENERAL)
            return AVERROR_INVALIDDATA;
        else
            return AVERROR_UNKNOWN;
    }
#else
    openmpt->module = openmpt_module_create_from_memory(buf, size, openmpt_logfunc, s, NULL);
    av_freep(&buf);
    if (!openmpt->module)
            return AVERROR_INVALIDDATA;
#endif

    openmpt->channels = av_get_channel_layout_nb_channels(openmpt->layout);

    if (openmpt->subsong >= openmpt_module_get_num_subsongs(openmpt->module)) {
        openmpt_module_destroy(openmpt->module);
        av_log(s, AV_LOG_ERROR, "Invalid subsong index: %d\n", openmpt->subsong);
        return AVERROR(EINVAL);
    }

    if (openmpt->subsong != -2) {
        if (openmpt->subsong >= 0) {
            av_dict_set_int(&s->metadata, "track", openmpt->subsong + 1, 0);
        }
        ret = openmpt_module_select_subsong(openmpt->module, openmpt->subsong);
        if (!ret){
            openmpt_module_destroy(openmpt->module);
            av_log(s, AV_LOG_ERROR, "Could not select requested subsong: %d", openmpt->subsong);
            return AVERROR(EINVAL);
        }
    }

    openmpt->duration = openmpt_module_get_duration_seconds(openmpt->module);

    add_meta(s, "artist",  openmpt_module_get_metadata(openmpt->module, "artist"));
    add_meta(s, "title",   openmpt_module_get_metadata(openmpt->module, "title"));
    add_meta(s, "encoder", openmpt_module_get_metadata(openmpt->module, "tracker"));
    add_meta(s, "comment", openmpt_module_get_metadata(openmpt->module, "message"));
    add_meta(s, "date",    openmpt_module_get_metadata(openmpt->module, "date"));

    st = avformat_new_stream(s, NULL);
    if (!st) {
        openmpt_module_destroy(openmpt->module);
        openmpt->module = NULL;
        return AVERROR(ENOMEM);
    }
    avpriv_set_pts_info(st, 64, 1, AV_TIME_BASE);
    st->duration = llrint(openmpt->duration*AV_TIME_BASE);

    st->codecpar->codec_type  = AVMEDIA_TYPE_AUDIO;
    st->codecpar->codec_id    = AV_NE(AV_CODEC_ID_PCM_F32BE, AV_CODEC_ID_PCM_F32LE);
    st->codecpar->channels    = openmpt->channels;
    st->codecpar->sample_rate = openmpt->sample_rate;

    return 0;
}