Esempi in C++ (Cpp) per av_image_copy_uc_from

Esempio n. 1

static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
                               const AVFrame *src)
{
    int download = !!src->hw_frames_ctx;

    AVFrame *map;
    int ret, i;

    map = av_frame_alloc();
    if (!map)
        return AVERROR(ENOMEM);
    map->format = dst->format;

    ret = dxva2_map_frame(ctx, map, download ? src : dst,
                          download ? AV_HWFRAME_MAP_READ : AV_HWFRAME_MAP_WRITE);
    if (ret < 0)
        goto fail;

    if (download) {
        ptrdiff_t src_linesize[4], dst_linesize[4];
        for (i = 0; i < 4; i++) {
            dst_linesize[i] = dst->linesize[i];
            src_linesize[i] = map->linesize[i];
        }
        av_image_copy_uc_from(dst->data, dst_linesize, map->data, src_linesize,
                              ctx->sw_format, src->width, src->height);
    } else {
        av_image_copy(map->data, map->linesize, src->data, src->linesize,
                      ctx->sw_format, src->width, src->height);
    }

fail:
    av_frame_free(&map);
    return ret;
}

Esempio n. 2

File: hwcontext_dxva2.c Progetto: mstorsjo/libav

static int dxva2_transfer_data_from(AVHWFramesContext *ctx, AVFrame *dst,
                                    const AVFrame *src)
{
    AVFrame *map;
    ptrdiff_t src_linesize[4], dst_linesize[4];
    int ret, i;

    if (dst->format != ctx->sw_format)
        return AVERROR(ENOSYS);

    map = av_frame_alloc();
    if (!map)
        return AVERROR(ENOMEM);
    map->format = dst->format;

    ret = dxva2_map_frame(ctx, map, src, AV_HWFRAME_MAP_READ);
    if (ret < 0)
        goto fail;

    for (i = 0; i < 4; i++) {
        dst_linesize[i] = dst->linesize[i];
        src_linesize[i] = map->linesize[i];
    }
    av_image_copy_uc_from(dst->data, dst_linesize, map->data, src_linesize,
                          ctx->sw_format, src->width, src->height);
fail:
    av_frame_free(&map);
    return ret;
}

Esempio n. 3

static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
                               const AVFrame *src)
{
    IDirect3DSurface9 *surface;
    D3DSURFACE_DESC    surfaceDesc;
    D3DLOCKED_RECT     LockedRect;
    HRESULT            hr;

    uint8_t *surf_data[4]     = { NULL };
    int      surf_linesize[4] = { 0 };
    int i;

    int download = !!src->hw_frames_ctx;

    surface = (IDirect3DSurface9*)(download ? src->data[3] : dst->data[3]);

    hr = IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
    if (FAILED(hr)) {
        av_log(ctx, AV_LOG_ERROR, "Error getting a surface description\n");
        return AVERROR_UNKNOWN;
    }

    hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL,
                                    download ? D3DLOCK_READONLY : D3DLOCK_DISCARD);
    if (FAILED(hr)) {
        av_log(ctx, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
        return AVERROR_UNKNOWN;
    }

    for (i = 0; download ? dst->data[i] : src->data[i]; i++)
        surf_linesize[i] = LockedRect.Pitch;

    av_image_fill_pointers(surf_data, ctx->sw_format, surfaceDesc.Height,
                           (uint8_t*)LockedRect.pBits, surf_linesize);

    if (download) {
        ptrdiff_t src_linesize1[4], dst_linesize1[4];
        for (i = 0; i < 4; i++) {
            dst_linesize1[i] = dst->linesize[i];
            src_linesize1[i] = surf_linesize[i];
        }
        av_image_copy_uc_from(dst->data, dst_linesize1, surf_data, src_linesize1,
                              ctx->sw_format, src->width, src->height);
    } else {
        av_image_copy(surf_data, surf_linesize, src->data, src->linesize,
                      ctx->sw_format, src->width, src->height);
    }

    IDirect3DSurface9_UnlockRect(surface);

    return 0;
}