C++ (Cpp) shall_we_drop 예제들

예제 #1

파일: vfwcap.c 프로젝트: AleXoundOS/FFmpeg

static LRESULT CALLBACK videostream_cb(HWND hwnd, LPVIDEOHDR vdhdr)
{
    AVFormatContext *s;
    struct vfw_ctx *ctx;
    AVPacketList **ppktl, *pktl_next;

    s = (AVFormatContext *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
    ctx = s->priv_data;

    dump_videohdr(s, vdhdr);

    if(shall_we_drop(s))
        return FALSE;

    WaitForSingleObject(ctx->mutex, INFINITE);

    pktl_next = av_mallocz(sizeof(AVPacketList));
    if(!pktl_next)
        goto fail;

    if(av_new_packet(&pktl_next->pkt, vdhdr->dwBytesUsed) < 0) {
        av_free(pktl_next);
        goto fail;
    }

    pktl_next->pkt.pts = vdhdr->dwTimeCaptured;
    memcpy(pktl_next->pkt.data, vdhdr->lpData, vdhdr->dwBytesUsed);

    for(ppktl = &ctx->pktl ; *ppktl ; ppktl = &(*ppktl)->next);
    *ppktl = pktl_next;

    ctx->curbufsize += vdhdr->dwBytesUsed;

    SetEvent(ctx->event);
    ReleaseMutex(ctx->mutex);

    return TRUE;
fail:
    ReleaseMutex(ctx->mutex);
    return FALSE;
}

예제 #2

static void
callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time)
{
    AVFormatContext *s = priv_data;
    struct dshow_ctx *ctx = s->priv_data;
    AVPacketList **ppktl, *pktl_next;

//    dump_videohdr(s, vdhdr);

    WaitForSingleObject(ctx->mutex, INFINITE);

    if(shall_we_drop(s))
        goto fail;

    pktl_next = av_mallocz(sizeof(AVPacketList));
    if(!pktl_next)
        goto fail;

    if(av_new_packet(&pktl_next->pkt, buf_size) < 0) {
        av_free(pktl_next);
        goto fail;
    }

    pktl_next->pkt.stream_index = index;
    pktl_next->pkt.pts = time;
    memcpy(pktl_next->pkt.data, buf, buf_size);

    for(ppktl = &ctx->pktl ; *ppktl ; ppktl = &(*ppktl)->next);
    *ppktl = pktl_next;

    ctx->curbufsize += buf_size;

    SetEvent(ctx->event);
    ReleaseMutex(ctx->mutex);

    return;
fail:
    ReleaseMutex(ctx->mutex);
    return;
}