C++ (Cpp) ca_layout_to_custom_layout Examples

Example #1

File: ao_coreaudio_chmap.c Project: qyot27/mpv

static bool ca_layout_to_mp_chmap(struct ao *ao, AudioChannelLayout *layout,
                                  struct mp_chmap *chmap)
{
    void *talloc_ctx = talloc_new(NULL);

    MP_VERBOSE(ao, "input channel layout:\n");
    ca_log_layout(ao, MSGL_V, layout);

    AudioChannelLayout *l = ca_layout_to_custom_layout(ao, talloc_ctx, layout);
    if (!l)
        goto coreaudio_error;

    if (l->mNumberChannelDescriptions > MP_NUM_CHANNELS) {
        MP_VERBOSE(ao, "layout has too many descriptions (%u, max: %d)\n",
                   (unsigned) l->mNumberChannelDescriptions, MP_NUM_CHANNELS);
        return false;
    }

    chmap->num = l->mNumberChannelDescriptions;
    for (int n = 0; n < l->mNumberChannelDescriptions; n++) {
        AudioChannelLabel label = l->mChannelDescriptions[n].mChannelLabel;
        int speaker = ca_label_to_mp_speaker_id(label);
        if (speaker < 0) {
            MP_VERBOSE(ao, "channel label=%u unusable to build channel "
                       "bitmap, skipping layout\n", (unsigned) label);
            goto coreaudio_error;
        }
        chmap->speaker[n] = speaker;
    }

    // Remap weird 7.1(rear) layouts correctly.
    replace_submap(chmap, CHMAP(6, FL, FR, BL, BR, SDL, SDR),
                   CHMAP(6, FL, FR, SL, SR, BL,  BR));

    talloc_free(talloc_ctx);
    MP_VERBOSE(ao, "mp chmap: %s\n", mp_chmap_to_str(chmap));
    return mp_chmap_is_valid(chmap) && !mp_chmap_is_unknown(chmap);
coreaudio_error:
    MP_VERBOSE(ao, "converted input channel layout (failed):\n");
    ca_log_layout(ao, MSGL_V, layout);
    talloc_free(talloc_ctx);
    return false;
}

Example #2

File: ao_coreaudio_chmap.c Project: AppleNuts/mpv

static bool ca_layout_to_mp_chmap(struct ao *ao, AudioChannelLayout *layout,
                                  struct mp_chmap *chmap)
{
    void *talloc_ctx = talloc_new(NULL);

    MP_DBG(ao, "input channel layout:\n");
    ca_log_layout(ao, MSGL_DEBUG, layout);

    AudioChannelLayout *l = ca_layout_to_custom_layout(ao, talloc_ctx, layout);
    if (!l)
        goto coreaudio_error;

    MP_VERBOSE(ao, "converted input channel layout:\n");
    ca_log_layout(ao, MSGL_V, l);

    if (l->mNumberChannelDescriptions > MP_NUM_CHANNELS) {
        MP_VERBOSE(ao, "layout has too many descriptions (%u, max: %d)\n",
                   (unsigned) l->mNumberChannelDescriptions, MP_NUM_CHANNELS);
        return false;
    }

    for (int n = 0; n < l->mNumberChannelDescriptions; n++) {
        AudioChannelLabel label = l->mChannelDescriptions[n].mChannelLabel;
        int speaker = ca_label_to_mp_speaker_id(label);
        if (speaker < 0) {
            MP_VERBOSE(ao, "channel label=%u unusable to build channel "
                           "bitmap, skipping layout\n", (unsigned) label);
            goto coreaudio_error;
        } else {
            chmap->speaker[n] = speaker;
            chmap->num = n + 1;
        }
    }

    talloc_free(talloc_ctx);
    return chmap->num > 0;
coreaudio_error:
    MP_VERBOSE(ao, "converted input channel layout (failed):\n");
    ca_log_layout(ao, MSGL_V, layout);
    talloc_free(talloc_ctx);
    return false;
}