本文整理汇总了C++中GstVdpDevice::vdp_decoder_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_decoder_render方法的具体用法？C++ GstVdpDevice::vdp_decoder_render怎么用？C++ GstVdpDevice::vdp_decoder_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类GstVdpDevice的用法示例。
在下文中一共展示了GstVdpDevice::vdp_decoder_render方法的1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:
static GstFlowReturn
gst_vdp_mpeg_dec_decode (GstVdpMpegDec * mpeg_dec,
GstClockTime timestamp, gint64 size)
{
VdpPictureInfoMPEG1Or2 *info;
GstBuffer *buffer;
GstBuffer *outbuf;
VdpVideoSurface surface;
GstVdpDevice *device;
VdpBitstreamBuffer vbit[1];
VdpStatus status;
info = &mpeg_dec->vdp_info;
if (info->picture_coding_type != B_FRAME) {
if (info->backward_reference != VDP_INVALID_HANDLE) {
gst_buffer_ref (mpeg_dec->b_buffer);
gst_vdp_mpeg_dec_push_video_buffer (mpeg_dec,
GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer));
}
if (info->forward_reference != VDP_INVALID_HANDLE) {
gst_buffer_unref (mpeg_dec->f_buffer);
info->forward_reference = VDP_INVALID_HANDLE;
}
info->forward_reference = info->backward_reference;
mpeg_dec->f_buffer = mpeg_dec->b_buffer;
info->backward_reference = VDP_INVALID_HANDLE;
}
if (gst_vdp_mpeg_dec_alloc_buffer (mpeg_dec, &outbuf) != GST_FLOW_OK) {
gst_adapter_clear (mpeg_dec->adapter);
return GST_FLOW_ERROR;
}
device = GST_VDP_VIDEO_BUFFER (outbuf)->device;
if (info->forward_reference != VDP_INVALID_HANDLE &&
info->picture_coding_type != I_FRAME)
gst_vdp_video_buffer_add_reference (GST_VDP_VIDEO_BUFFER (outbuf),
GST_VDP_VIDEO_BUFFER (mpeg_dec->f_buffer));
if (info->backward_reference != VDP_INVALID_HANDLE
&& info->picture_coding_type == B_FRAME)
gst_vdp_video_buffer_add_reference (GST_VDP_VIDEO_BUFFER (outbuf),
GST_VDP_VIDEO_BUFFER (mpeg_dec->b_buffer));
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = mpeg_dec->duration;
GST_BUFFER_OFFSET (outbuf) = mpeg_dec->frame_nr;
GST_BUFFER_SIZE (outbuf) = size;
if (info->picture_coding_type == I_FRAME)
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT);
if (info->top_field_first)
GST_BUFFER_FLAG_SET (outbuf, GST_VIDEO_BUFFER_TFF);
else
GST_BUFFER_FLAG_UNSET (outbuf, GST_VIDEO_BUFFER_TFF);
buffer = gst_adapter_take_buffer (mpeg_dec->adapter,
gst_adapter_available (mpeg_dec->adapter));
surface = GST_VDP_VIDEO_BUFFER (outbuf)->surface;
vbit[0].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
vbit[0].bitstream = GST_BUFFER_DATA (buffer);
vbit[0].bitstream_bytes = GST_BUFFER_SIZE (buffer);
status = device->vdp_decoder_render (mpeg_dec->decoder, surface,
(VdpPictureInfo *) info, 1, vbit);
gst_buffer_unref (buffer);
info->slice_count = 0;
if (status != VDP_STATUS_OK) {
GST_ELEMENT_ERROR (mpeg_dec, RESOURCE, READ,
("Could not decode"),
("Error returned from vdpau was: %s",
device->vdp_get_error_string (status)));
gst_buffer_unref (GST_BUFFER (outbuf));
return GST_FLOW_ERROR;
}
if (info->picture_coding_type == B_FRAME) {
gst_vdp_mpeg_dec_push_video_buffer (mpeg_dec,
GST_VDP_VIDEO_BUFFER (outbuf));
} else {
info->backward_reference = surface;
mpeg_dec->b_buffer = GST_BUFFER (outbuf);
}
return GST_FLOW_OK;
}