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vdpaumpegdec: inital support at handling B_FRAMES

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This commit is contained in:
Carl-Anton Ingmarsson 2009-04-16 22:06:50 +02:00 committed by Jan Schmidt
parent 7ca750c422
commit da191134a1
2 changed files with 47 additions and 0 deletions
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43
sys/vdpau/gstvdpmpegdecoder.c
View file

@ -148,6 +148,18 @@ gst_vdp_mpeg_decoder_decode (GstVdpMpegDecoder * mpeg_dec)
buffer = gst_adapter_take_buffer (mpeg_dec->adapter,
gst_adapter_available (mpeg_dec->adapter));
/* if the frame is a B_FRAME we store it for future decoding */
if (mpeg_dec->vdp_info.picture_coding_type == B_FRAME) {
mpeg_dec->b_buffer = buffer;
memcpy (&mpeg_dec->b_vdp_info, &mpeg_dec->vdp_info,
sizeof (VdpPictureInfoMPEG1Or2));
/* unset forward_reference since next frame must be an I_FRAME */
mpeg_dec->vdp_info.forward_reference = VDP_INVALID_HANDLE;
return GST_FLOW_OK;
}
outbuf = gst_vdp_video_buffer_new (dec->device, VDP_CHROMA_TYPE_420,
dec->width, dec->height);
surface = outbuf->surface;
@ -179,6 +191,35 @@ gst_vdp_mpeg_decoder_decode (GstVdpMpegDecoder * mpeg_dec)
return GST_FLOW_ERROR;
}
/* if we have stored away a B_FRAME we can now decode it */
if (mpeg_dec->b_buffer) {
GstVdpVideoBuffer *b_outbuf;
b_outbuf = gst_vdp_video_buffer_new (dec->device, VDP_CHROMA_TYPE_420,
dec->width, dec->height);
mpeg_dec->b_vdp_info.backward_reference = surface;
vbit[0].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
vbit[0].bitstream = GST_BUFFER_DATA (mpeg_dec->b_buffer);
vbit[0].bitstream_bytes = GST_BUFFER_SIZE (mpeg_dec->b_buffer);
status = device->vdp_decoder_render (mpeg_dec->decoder, b_outbuf->surface,
(VdpPictureInfo *) & mpeg_dec->b_vdp_info, 1, vbit);
gst_buffer_unref (mpeg_dec->b_buffer);
mpeg_dec->b_buffer = NULL;
if (status != VDP_STATUS_OK) {
GST_ELEMENT_ERROR (mpeg_dec, RESOURCE, READ,
("Could not decode B_FRAME"),
("Error returned from vdpau was: %s",
device->vdp_get_error_string (status)));
if (mpeg_dec->b_vdp_info.forward_reference != VDP_INVALID_HANDLE)
gst_buffer_unref (mpeg_dec->f_buffer);
}
gst_vdp_decoder_push_video_buffer (GST_VDPAU_DECODER (mpeg_dec), b_outbuf);
}
gst_buffer_ref (GST_BUFFER (outbuf));
ret = gst_vdp_decoder_push_video_buffer (GST_VDPAU_DECODER (mpeg_dec),
@ -441,6 +482,8 @@ gst_vdp_mpeg_decoder_init (GstVdpMpegDecoder * mpeg_dec,
mpeg_dec->decoder = VDP_INVALID_HANDLE;
gst_vdp_mpeg_decoder_init_info (&mpeg_dec->vdp_info);
mpeg_dec->b_buffer = NULL;
mpeg_dec->adapter = gst_adapter_new ();
gst_pad_set_chain_function (dec->sink, gst_vdp_mpeg_decoder_chain);

4
sys/vdpau/gstvdpmpegdecoder.h
View file

@ -46,6 +46,10 @@ struct _GstVdpMpegDecoder
VdpDecoder decoder;
VdpPictureInfoMPEG1Or2 vdp_info;
GstBuffer *f_buffer;
/* holds B_FRAMES */
GstBuffer *b_buffer;
VdpPictureInfoMPEG1Or2 b_vdp_info;
GstAdapter *adapter;
};