C++ (Cpp) decklink_setup_audio Examples

Example #1

File: decklink_enc.cpp Project: 15806905685/FFmpeg

av_cold int ff_decklink_write_header(AVFormatContext *avctx)
{
    struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
    struct decklink_ctx *ctx;
    unsigned int n;
    int ret;

    ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
    if (!ctx)
        return AVERROR(ENOMEM);
    ctx->list_devices = cctx->list_devices;
    ctx->list_formats = cctx->list_formats;
    ctx->preroll      = cctx->preroll;
    cctx->ctx = ctx;

    /* List available devices. */
    if (ctx->list_devices) {
        ff_decklink_list_devices(avctx);
        return AVERROR_EXIT;
    }

    ret = ff_decklink_init_device(avctx, avctx->filename);
    if (ret < 0)
        return ret;

    /* Get output device. */
    if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {
        av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
               avctx->filename);
        ret = AVERROR(EIO);
        goto error;
    }

    /* List supported formats. */
    if (ctx->list_formats) {
        ff_decklink_list_formats(avctx);
        ret = AVERROR_EXIT;
        goto error;
    }

    /* Setup streams. */
    ret = AVERROR(EIO);
    for (n = 0; n < avctx->nb_streams; n++) {
        AVStream *st = avctx->streams[n];
        AVCodecContext *c = st->codec;
        if        (c->codec_type == AVMEDIA_TYPE_AUDIO) {
            if (decklink_setup_audio(avctx, st))
                goto error;
        } else if (c->codec_type == AVMEDIA_TYPE_VIDEO) {
            if (decklink_setup_video(avctx, st))
                goto error;
        } else {
            av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n");
            goto error;
        }
    }

    return 0;

error:
    ff_decklink_cleanup(avctx);
    return ret;
}

Example #2

File: decklink_enc.cpp Project: 0day-ci/FFmpeg

av_cold int ff_decklink_write_header(AVFormatContext *avctx)
{
    struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data;
    struct decklink_ctx *ctx;
    IDeckLinkDisplayModeIterator *itermode;
    IDeckLinkIterator *iter;
    IDeckLink *dl = NULL;
    unsigned int n;

    ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx));
    if (!ctx)
        return AVERROR(ENOMEM);
    ctx->list_devices = cctx->list_devices;
    ctx->list_formats = cctx->list_formats;
    ctx->preroll      = cctx->preroll;
    cctx->ctx = ctx;

    iter = CreateDeckLinkIteratorInstance();
    if (!iter) {
        av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
        return AVERROR(EIO);
    }

    /* List available devices. */
    if (ctx->list_devices) {
        ff_decklink_list_devices(avctx);
        return AVERROR_EXIT;
    }

    /* Open device. */
    while (iter->Next(&dl) == S_OK) {
        const char *displayName;
        ff_decklink_get_display_name(dl, &displayName);
        if (!strcmp(avctx->filename, displayName)) {
            av_free((void *) displayName);
            ctx->dl = dl;
            break;
        }
        av_free((void *) displayName);
        dl->Release();
    }
    iter->Release();
    if (!ctx->dl) {
        av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", avctx->filename);
        return AVERROR(EIO);
    }

    /* Get output device. */
    if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) {
        av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n",
               avctx->filename);
        ctx->dl->Release();
        return AVERROR(EIO);
    }

    /* List supported formats. */
    if (ctx->list_formats) {
        ff_decklink_list_formats(avctx);
        ctx->dlo->Release();
        ctx->dl->Release();
        return AVERROR_EXIT;
    }

    if (ctx->dlo->GetDisplayModeIterator(&itermode) != S_OK) {
        av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
        ctx->dl->Release();
        return AVERROR(EIO);
    }

    /* Setup streams. */
    for (n = 0; n < avctx->nb_streams; n++) {
        AVStream *st = avctx->streams[n];
        AVCodecContext *c = st->codec;
        if        (c->codec_type == AVMEDIA_TYPE_AUDIO) {
            if (decklink_setup_audio(avctx, st))
                goto error;
        } else if (c->codec_type == AVMEDIA_TYPE_VIDEO) {
            if (decklink_setup_video(avctx, st))
                goto error;
        } else {
            av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n");
            goto error;
        }
    }
    itermode->Release();

    return 0;

error:

    ctx->dlo->Release();
    ctx->dl->Release();

    return AVERROR(EIO);
}