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decoder: h264: slightly optimize the process to detect new pictures.

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Optimize the process to detect new pictures or start of new access
units by checking if the previous NAL unit was the end of a picture,
or the end of the previous access unit.
This commit is contained in:
Gwenole Beauchesne 2014-06-30 11:06:29 +02:00
parent 8ed129b8bd
commit a208a80c29
1 changed files with 6 additions and 1 deletions
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7
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -4040,7 +4040,12 @@ gst_vaapi_decoder_h264_parse(GstVaapiDecoder *base_decoder,
case GST_H264_NAL_SLICE_IDR:
case GST_H264_NAL_SLICE:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SLICE;
if (is_new_picture(pi, priv->prev_slice_pi)) {
if (priv->prev_pi &&
(priv->prev_pi->flags & GST_VAAPI_DECODER_UNIT_FLAG_AU_END)) {
flags |= GST_VAAPI_DECODER_UNIT_FLAG_AU_START |
GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
}
else if (is_new_picture(pi, priv->prev_slice_pi)) {
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
if (is_new_access_unit(pi, priv->prev_slice_pi))
flags |= GST_VAAPI_DECODER_UNIT_FLAG_AU_START;