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C++ GstVdpDevice::vdp_video_mixer_render方法代码示例

本文整理汇总了C++中GstVdpDevice::vdp_video_mixer_render方法的典型用法代码示例。如果您正苦于以下问题:C++ GstVdpDevice::vdp_video_mixer_render方法的具体用法?C++ GstVdpDevice::vdp_video_mixer_render怎么用?C++ GstVdpDevice::vdp_video_mixer_render使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在GstVdpDevice的用法示例。


在下文中一共展示了GstVdpDevice::vdp_video_mixer_render方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: while

static GstFlowReturn
gst_vdp_vpp_drain (GstVdpVideoPostProcess * vpp)
{
  GstVdpPicture current_pic;

  guint32 video_surfaces_past_count;
  VdpVideoSurface video_surfaces_past[MAX_PICTURES];

  guint32 video_surfaces_future_count;
  VdpVideoSurface video_surfaces_future[MAX_PICTURES];

  GstFlowReturn ret;

  while (gst_vdp_vpp_get_next_picture (vpp,
          &current_pic,
          &video_surfaces_past_count, video_surfaces_past,
          &video_surfaces_future_count, video_surfaces_future)) {
    GError *err;
    GstVdpOutputBuffer *outbuf;

    GstStructure *structure;
    GstVideoRectangle src_r = { 0, }
    , dest_r = {
    0,};
    VdpRect rect;

    GstVdpDevice *device;
    VdpStatus status;

    err = NULL;
    ret =
        gst_vdp_output_src_pad_alloc_buffer ((GstVdpOutputSrcPad *) vpp->srcpad,
        &outbuf, &err);
    if (ret != GST_FLOW_OK)
      goto output_pad_error;

    src_r.w = vpp->width;
    src_r.h = vpp->height;
    if (vpp->got_par) {
      gint new_width;

      new_width = gst_util_uint64_scale_int (src_r.w, vpp->par_n, vpp->par_d);
      src_r.x += (src_r.w - new_width) / 2;
      src_r.w = new_width;
    }

    structure = gst_caps_get_structure (GST_BUFFER_CAPS (outbuf), 0);
    if (!gst_structure_get_int (structure, "width", &dest_r.w) ||
        !gst_structure_get_int (structure, "height", &dest_r.h))
      goto invalid_caps;

    if (vpp->force_aspect_ratio) {
      GstVideoRectangle res_r;

      gst_video_sink_center_rect (src_r, dest_r, &res_r, TRUE);
      rect.x0 = res_r.x;
      rect.x1 = res_r.w + res_r.x;
      rect.y0 = res_r.y;
      rect.y1 = res_r.h + res_r.y;
    } else {
      rect.x0 = 0;
      rect.x1 = dest_r.w;
      rect.y0 = 0;
      rect.y1 = dest_r.h;
    }

    device = vpp->device;
    status =
        device->vdp_video_mixer_render (vpp->mixer, VDP_INVALID_HANDLE, NULL,
        current_pic.structure, video_surfaces_past_count, video_surfaces_past,
        current_pic.buf->surface, video_surfaces_future_count,
        video_surfaces_future, NULL, outbuf->surface, NULL, &rect, 0, NULL);
    if (status != VDP_STATUS_OK)
      goto render_error;

    GST_BUFFER_TIMESTAMP (outbuf) = current_pic.timestamp;
    if (gst_vdp_vpp_is_interlaced (vpp))
      GST_BUFFER_DURATION (outbuf) = vpp->field_duration;
    else
      GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (current_pic.buf);

    if (GST_BUFFER_FLAG_IS_SET (current_pic.buf, GST_BUFFER_FLAG_DISCONT))
      GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);

    if (GST_BUFFER_FLAG_IS_SET (current_pic.buf, GST_BUFFER_FLAG_PREROLL))
      GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_PREROLL);

    if (GST_BUFFER_FLAG_IS_SET (current_pic.buf, GST_BUFFER_FLAG_GAP))
      GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP);

    err = NULL;
    ret =
        gst_vdp_output_src_pad_push ((GstVdpOutputSrcPad *) vpp->srcpad,
        outbuf, &err);
    if (ret != GST_FLOW_OK)
      goto output_pad_error;

    continue;

  invalid_caps:
//.........这里部分代码省略.........
开发者ID:lubing521,项目名称:gst-embedded-builder,代码行数:101,代码来源:gstvdpvideopostprocess.c

示例2: while

static GstFlowReturn
gst_vdp_vpp_chain (GstPad * pad, GstBuffer * buffer)
{
  GstVdpVideoPostProcess *vpp =
      GST_VDP_VIDEO_POST_PROCESS (gst_pad_get_parent (pad));

  GstFlowReturn ret = GST_FLOW_OK;

  GstVdpPicture current_pic;

  guint32 video_surfaces_past_count;
  VdpVideoSurface video_surfaces_past[MAX_PICTURES];

  guint32 video_surfaces_future_count;
  VdpVideoSurface video_surfaces_future[MAX_PICTURES];

  if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
    GST_DEBUG_OBJECT (vpp, "Received discont buffer");
    gst_vdp_vpp_flush (vpp);
  }

  gst_vdp_vpp_add_buffer (vpp, GST_VDP_VIDEO_BUFFER (buffer));

  while (gst_vdp_vpp_get_next_picture (vpp,
          &current_pic,
          &video_surfaces_past_count, video_surfaces_past,
          &video_surfaces_future_count, video_surfaces_future)) {
    GstVdpOutputBuffer *outbuf;

    GstStructure *structure;
    GstVideoRectangle src_r = { 0, }
    , dest_r = {
    0,};
    gint par_n, par_d;
    VdpRect rect;

    GstVdpDevice *device;
    VdpStatus status;

    ret =
        gst_vdp_vpp_alloc_output_buffer (vpp, GST_PAD_CAPS (vpp->srcpad),
        &outbuf);
    if (ret != GST_FLOW_OK)
      break;

    structure = gst_caps_get_structure (GST_BUFFER_CAPS (buffer), 0);
    if (!gst_structure_get_int (structure, "width", &src_r.w) ||
        !gst_structure_get_int (structure, "height", &src_r.h))
      goto invalid_caps;

    if (gst_structure_get_fraction (structure, "pixel-aspect-ratio", &par_n,
            &par_d)) {
      gint new_width;

      new_width = gst_util_uint64_scale_int (src_r.w, par_n, par_d);
      src_r.x += (src_r.w - new_width) / 2;
      src_r.w = new_width;
    }

    structure = gst_caps_get_structure (GST_BUFFER_CAPS (outbuf), 0);
    if (!gst_structure_get_int (structure, "width", &dest_r.w) ||
        !gst_structure_get_int (structure, "height", &dest_r.h))
      goto invalid_caps;

    if (vpp->force_aspect_ratio) {
      GstVideoRectangle res_r;

      gst_video_sink_center_rect (src_r, dest_r, &res_r, TRUE);
      rect.x0 = res_r.x;
      rect.x1 = res_r.w + res_r.x;
      rect.y0 = res_r.y;
      rect.y1 = res_r.h + res_r.y;
    } else {
      rect.x0 = 0;
      rect.x1 = dest_r.w;
      rect.y0 = 0;
      rect.y1 = dest_r.h;
    }

    device = vpp->device;
    status =
        device->vdp_video_mixer_render (vpp->mixer, VDP_INVALID_HANDLE, NULL,
        current_pic.structure, video_surfaces_past_count, video_surfaces_past,
        current_pic.buf->surface, video_surfaces_future_count,
        video_surfaces_future, NULL, outbuf->surface, NULL, &rect, 0, NULL);
    if (status != VDP_STATUS_OK) {
      GST_ELEMENT_ERROR (vpp, RESOURCE, READ,
          ("Could not post process frame"),
          ("Error returned from vdpau was: %s",
              device->vdp_get_error_string (status)));
      ret = GST_FLOW_ERROR;
      goto done;
    }

    GST_BUFFER_TIMESTAMP (outbuf) = current_pic.timestamp;
    if (gst_vdp_vpp_is_interlaced (vpp))
      GST_BUFFER_DURATION (outbuf) = vpp->field_duration;
    else
      GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (current_pic.buf);

//.........这里部分代码省略.........
开发者ID:zsx,项目名称:ossbuild,代码行数:101,代码来源:gstvdpvideopostprocess.c


注:本文中的GstVdpDevice::vdp_video_mixer_render方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。