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vc1: handle frames with multiple slices.

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This commit is contained in:
Gwenole Beauchesne 2013-01-23 16:38:24 +01:00
parent 9f2b2a56d6
commit efd90114bf
1 changed files with 47 additions and 20 deletions
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67
gst-libs/gst/vaapi/gstvaapidecoder_vc1.c
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@ -845,6 +845,32 @@ fill_picture(GstVaapiDecoderVC1 *decoder, GstVaapiPicture *picture)
return TRUE;
}
static GstVaapiDecoderStatus
decode_slice_chunk(GstVaapiDecoderVC1 *decoder, GstVC1BDU *ebdu,
guint slice_addr, guint header_size)
{
GstVaapiDecoderVC1Private * const priv = decoder->priv;
GstVaapiPicture * const picture = priv->current_picture;
GstVaapiSlice *slice;
VASliceParameterBufferVC1 *slice_param;
slice = GST_VAAPI_SLICE_NEW(VC1, decoder,
ebdu->data + ebdu->sc_offset,
ebdu->size + ebdu->offset - ebdu->sc_offset);
if (!slice) {
GST_ERROR("failed to allocate slice");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
gst_vaapi_picture_add_slice(picture, slice);
/* Fill in VASliceParameterBufferVC1 */
slice_param = slice->param;
slice_param->macroblock_offset = 8 * (ebdu->offset - ebdu->sc_offset) +
header_size;
slice_param->slice_vertical_position = slice_addr;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_frame(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu)
{
@ -852,8 +878,6 @@ decode_frame(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu)
GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr;
GstVC1ParserResult result;
GstVaapiPicture * const picture = priv->current_picture;
GstVaapiSlice *slice;
VASliceParameterBufferVC1 *slice_param;
memset(frame_hdr, 0, sizeof(*frame_hdr));
result = gst_vc1_parse_frame_header(
@ -906,25 +930,29 @@ decode_frame(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu)
if (!fill_picture(decoder, picture))
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
return decode_slice_chunk(decoder, ebdu, 0, frame_hdr->header_size);
}
slice = GST_VAAPI_SLICE_NEW(
VC1,
decoder,
ebdu->data + ebdu->sc_offset,
ebdu->size + ebdu->offset - ebdu->sc_offset
static GstVaapiDecoderStatus
decode_slice(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu)
{
GstVaapiDecoderVC1Private * const priv = decoder->priv;
GstVC1SliceHdr slice_hdr;
GstVC1ParserResult result;
memset(&slice_hdr, 0, sizeof(slice_hdr));
result = gst_vc1_parse_slice_header(
rbdu->data + rbdu->offset,
rbdu->size,
&slice_hdr,
&priv->seq_hdr
);
if (!slice) {
GST_ERROR("failed to allocate slice");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
if (result != GST_VC1_PARSER_OK) {
GST_ERROR("failed to parse slice layer");
return get_status(result);
}
gst_vaapi_picture_add_slice(picture, slice);
/* Fill in VASliceParameterBufferVC1 */
slice_param = slice->param;
slice_param->macroblock_offset = 8 * (ebdu->offset - ebdu->sc_offset) + frame_hdr->header_size;
slice_param->slice_vertical_position = 0;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
return decode_slice_chunk(decoder, ebdu, slice_hdr.slice_addr,
slice_hdr.header_size);
}
static gboolean
@ -998,8 +1026,7 @@ decode_ebdu(GstVaapiDecoderVC1 *decoder, GstVC1BDU *ebdu)
status = decode_frame(decoder, &rbdu, ebdu);
break;
case GST_VC1_SLICE:
GST_DEBUG("decode slice");
status = GST_VAAPI_DECODER_STATUS_ERROR_BITSTREAM_PARSER;
status = decode_slice(decoder, &rbdu, ebdu);
break;
case GST_VC1_END_OF_SEQ:
status = decode_sequence_end(decoder);