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vc1: implement {start,end}_frame() hooks.

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Implement GstVaapiDecoder.start_frame() and end_frame() semantics so
that to create new VA context earlier and submit VA pictures to the
HW for decoding as soon as possible. i.e. don't wait for the next
frame to start decoding the previous one.
This commit is contained in:
Gwenole Beauchesne 2013-01-22 13:44:32 +01:00
parent 823f16d7ce
commit 1513f52fc1
1 changed files with 42 additions and 29 deletions
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71
gst-libs/gst/vaapi/gstvaapidecoder_vc1.c
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@ -844,45 +844,18 @@ static GstVaapiDecoderStatus
decode_frame(GstVaapiDecoderVC1 *decoder, GstVC1BDU *rbdu, GstVC1BDU *ebdu)
{
GstVaapiDecoderVC1Private * const priv = decoder->priv;
GstVC1SeqHdr * const seq_hdr = &priv->seq_hdr;
GstVC1FrameHdr * const frame_hdr = &priv->frame_hdr;
GstVC1ParserResult result;
GstVaapiPicture *picture;
GstVaapiPicture * const picture = priv->current_picture;
GstVaapiSlice *slice;
GstVaapiDecoderStatus status;
VASliceParameterBufferVC1 *slice_param;
status = ensure_context(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
GST_DEBUG("failed to reset context");
return status;
}
if (priv->current_picture) {
status = decode_current_picture(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
picture = GST_VAAPI_PICTURE_NEW(VC1, decoder);
if (!picture) {
GST_DEBUG("failed to allocate picture");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
gst_vaapi_picture_replace(&priv->current_picture, picture);
gst_vaapi_picture_unref(picture);
if (!gst_vc1_bitplanes_ensure_size(priv->bitplanes, seq_hdr)) {
GST_DEBUG("failed to allocate bitplanes");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
memset(frame_hdr, 0, sizeof(*frame_hdr));
result = gst_vc1_parse_frame_header(
rbdu->data + rbdu->offset,
rbdu->size,
frame_hdr,
seq_hdr,
&priv->seq_hdr,
priv->bitplanes
);
if (result != GST_VC1_PARSER_OK) {
@ -1263,6 +1236,44 @@ gst_vaapi_decoder_vc1_decode(GstVaapiDecoder *base_decoder,
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_start_frame(GstVaapiDecoder *base_decoder,
GstVaapiDecoderUnit *unit)
{
GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(base_decoder);
GstVaapiDecoderVC1Private * const priv = decoder->priv;
GstVaapiDecoderStatus status;
GstVaapiPicture *picture;
status = ensure_context(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
GST_DEBUG("failed to reset context");
return status;
}
picture = GST_VAAPI_PICTURE_NEW(VC1, decoder);
if (!picture) {
GST_DEBUG("failed to allocate picture");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
gst_vaapi_picture_replace(&priv->current_picture, picture);
gst_vaapi_picture_unref(picture);
if (!gst_vc1_bitplanes_ensure_size(priv->bitplanes, &priv->seq_hdr)) {
GST_DEBUG("failed to allocate bitplanes");
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_vc1_end_frame(GstVaapiDecoder *base_decoder)
{
GstVaapiDecoderVC1 * const decoder = GST_VAAPI_DECODER_VC1(base_decoder);
return decode_current_picture(decoder);
}
static void
gst_vaapi_decoder_vc1_finalize(GObject *object)
{
@ -1300,6 +1311,8 @@ gst_vaapi_decoder_vc1_class_init(GstVaapiDecoderVC1Class *klass)
decoder_class->parse = gst_vaapi_decoder_vc1_parse;
decoder_class->decode = gst_vaapi_decoder_vc1_decode;
decoder_class->start_frame = gst_vaapi_decoder_vc1_start_frame;
decoder_class->end_frame = gst_vaapi_decoder_vc1_end_frame;
}
static void