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encoder: hevc: fix bug in multi slice encoding.

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This is a work-around for satisfying the VA-Intel driver.
The driver only support slices begin from CTU row start address.

Multi-Slice encoding also requires a fix in va-intel-driver:
http://lists.freedesktop.org/archives/libva/2015-May/003351.html

https://bugzilla.gnome.org/show_bug.cgi?id=749854

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
This commit is contained in:
Sreerenj Balachandran 2015-05-28 05:43:49 +03:00
parent 5abd2b90b6
commit 55775c6203
1 changed files with 22 additions and 5 deletions
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27
gst-libs/gst/vaapi/gstvaapiencoder_h265.c
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@ -1588,6 +1588,7 @@ add_slice_headers (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
GstVaapiEncSlice *slice;
guint slice_of_ctus, slice_mod_ctus, cur_slice_ctus;
guint ctu_size;
guint ctu_width_round_factor;
guint last_ctu_index;
guint i_slice, i_ref;
@ -1599,12 +1600,23 @@ add_slice_headers (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
slice_of_ctus = ctu_size / encoder->num_slices;
slice_mod_ctus = ctu_size % encoder->num_slices;
last_ctu_index = 0;
for (i_slice = 0; i_slice < encoder->num_slices; ++i_slice) {
for (i_slice = 0;
i_slice < encoder->num_slices && (last_ctu_index < ctu_size); ++i_slice) {
cur_slice_ctus = slice_of_ctus;
if (slice_mod_ctus) {
++cur_slice_ctus;
--slice_mod_ctus;
}
/* Work-around for satisfying the VA-Intel driver.
* The driver only support multi slice begin from row start address */
ctu_width_round_factor =
encoder->ctu_width - (cur_slice_ctus % encoder->ctu_width);
cur_slice_ctus += ctu_width_round_factor;
if ((last_ctu_index + cur_slice_ctus) > ctu_size)
cur_slice_ctus = ctu_size - last_ctu_index;
slice = GST_VAAPI_ENC_SLICE_NEW (HEVC, encoder);
g_assert (slice && slice->param_id != VA_INVALID_ID);
slice_param = slice->param;
@ -1664,14 +1676,16 @@ add_slice_headers (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
slice_param->slice_qp_delta = encoder->init_qp - encoder->min_qp;
slice_param->slice_fields.value = 0;
if (i_slice == encoder->num_slices - 1)
slice_param->slice_fields.bits.last_slice_of_pic_flag = 1;
slice_param->slice_fields.
bits.slice_loop_filter_across_slices_enabled_flag = TRUE;
/* set calculation for next slice */
last_ctu_index += cur_slice_ctus;
if ((i_slice == encoder->num_slices - 1) || (last_ctu_index == ctu_size))
slice_param->slice_fields.bits.last_slice_of_pic_flag = 1;
if ((GST_VAAPI_ENCODER_PACKED_HEADERS (encoder) &
VAEncPackedHeaderHEVC_Slice)
&& !add_packed_slice_header (encoder, picture, slice))
@ -1680,7 +1694,12 @@ add_slice_headers (GstVaapiEncoderH265 * encoder, GstVaapiEncPicture * picture,
gst_vaapi_enc_picture_add_slice (picture, slice);
gst_vaapi_codec_object_replace (&slice, NULL);
}
if (i_slice < encoder->num_slices)
GST_WARNING
("Using less number of slices than requested, Number of slices per pictures is %d",
i_slice);
g_assert (last_ctu_index == ctu_size);
return TRUE;
error_create_packed_slice_hdr:
@ -2387,8 +2406,6 @@ gst_vaapi_encoder_h265_set_property (GstVaapiEncoder * base_encoder,
break;
case GST_VAAPI_ENCODER_H265_PROP_NUM_SLICES:
encoder->num_slices = g_value_get_uint (value);
if (encoder->num_slices > 1)
GST_ERROR ("Mulit-slice encoding is not yet functional!");
break;
default:
return GST_VAAPI_ENCODER_STATUS_ERROR_INVALID_PARAMETER;