/*
* VP9 HW decode acceleration through VA API
*
* Copyright (C) 2015 Timo Rothenpieler <timo@rothenpieler.org>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/pixdesc.h"
#include "hwaccel.h"
#include "vaapi_decode.h"
#include "vp9shared.h"
static VASurfaceID vaapi_vp9_surface_id(const VP9Frame *vf)
{
if (vf)
return ff_vaapi_get_surface_id(vf->tf.f);
else
return VA_INVALID_SURFACE;
}
static int vaapi_vp9_start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
const VP9SharedContext *h = avctx->priv_data;
VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
VADecPictureParameterBufferVP9 pic_param;
const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
int err, i;
pic->output_surface = vaapi_vp9_surface_id(&h->frames[CUR_FRAME]);
pic_param = (VADecPictureParameterBufferVP9) {
.frame_width = avctx->width,
.frame_height = avctx->height,
.pic_fields.bits = {
.subsampling_x = pixdesc->log2_chroma_w,
.subsampling_y = pixdesc->log2_chroma_h,
.frame_type = !h->h.keyframe,
.show_frame = !h->h.invisible,
.error_resilient_mode = h->h.errorres,
.intra_only = h->h.intraonly,
.allow_high_precision_mv = h->h.keyframe ? 0 : h->h.highprecisionmvs,
.mcomp_filter_type = h->h.filtermode ^ (h->h.filtermode <= 1),
.frame_parallel_decoding_mode = h->h.parallelmode,
.reset_frame_context = h->h.resetctx,
.refresh_frame_context = h->h.refreshctx,
.frame_context_idx = h->h.framectxid,
.segmentation_enabled = h->h.segmentation.enabled,
.segmentation_temporal_update = h->h.segmentation.temporal,
.segmentation_update_map = h->h.segmentation.update_map,
.last_ref_frame = h->h.refidx[0],
.last_ref_frame_sign_bias = h->h.signbias[0],
.golden_ref_frame = h->h.refidx[1],
.golden_ref_frame_sign_bias = h->h.signbias[1],
.alt_ref_frame = h->h.refidx[2],
.alt_ref_frame_sign_bias = h->h.signbias[2],
.lossless_flag = h->h.lossless,
},
.filter_level = h->h.filter.level,
.sharpness_level = h->h.filter.sharpness,
.log2_tile_rows = h->h.tiling.log2_tile_rows,
.log2_tile_columns = h->h.tiling.log2_tile_cols,
.frame_header_length_in_bytes = h->h.uncompressed_header_size,
.first_partition_size = h->h.compressed_header_size,
.profile = h->h.profile,
.bit_depth = h->h.bpp,
};
for (i = 0; i < 7; i++)
pic_param.mb_segment_tree_probs[i] = h->h.segmentation.prob[i];
if (h->h.segmentation.temporal) {
for (i = 0; i < 3; i++)
pic_param.segment_pred_probs[i] = h->h.segmentation.pred_prob[i];
} else {
memset(pic_param.segment_pred_probs, 255, sizeof(pic_param.segment_pred_probs));
}
for (i = 0; i < 8; i++) {
if (h->refs[i].f->buf[0])
pic_param.reference_frames[i] = ff_vaapi_get_surface_id(h->refs[i].f);
else
pic_param.reference_frames[i] = VA_INVALID_ID;
}
err = ff_vaapi_decode_make_param_buffer(avctx, pic,
VAPictureParameterBufferType,
&pic_param, sizeof(pic_param));
if (err < 0) {
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
return 0;
}
static int vaapi_vp9_end_frame(AVCodecContext *avctx)
{
const VP9SharedContext *h = avctx->priv_data;
VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
return ff_vaapi_decode_issue(avctx, pic);
}
static int vaapi_vp9_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
const VP9SharedContext *h = avctx->priv_data;
VAAPIDecodePicture *pic = h->frames[CUR_FRAME].hwaccel_picture_private;
VASliceParameterBufferVP9 slice_param;
int err, i;
slice_param = (VASliceParameterBufferVP9) {
.slice_data_size = size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
};
for (i = 0; i < 8; i++) {
slice_param.seg_param[i] = (VASegmentParameterVP9) {
.segment_flags.fields = {
.segment_reference_enabled = h->h.segmentation.feat[i].ref_enabled,
.segment_reference = h->h.segmentation.feat[i].ref_val,
.segment_reference_skipped = h->h.segmentation.feat[i].skip_enabled,
},
.luma_dc_quant_scale = h->h.segmentation.feat[i].qmul[0][0],
.luma_ac_quant_scale = h->h.segmentation.feat[i].qmul[0][1],
.chroma_dc_quant_scale = h->h.segmentation.feat[i].qmul[1][0],
.chroma_ac_quant_scale = h->h.segmentation.feat[i].qmul[1][1],
};
memcpy(slice_param.seg_param[i].filter_level, h->h.segmentation.feat[i].lflvl, sizeof(slice_param.seg_param[i].filter_level));
}
err = ff_vaapi_decode_make_slice_buffer(avctx, pic,
&slice_param, sizeof(slice_param),
buffer, size);
if (err) {
ff_vaapi_decode_cancel(avctx, pic);
return err;
}
return 0;
}
AVHWAccel ff_vp9_vaapi_hwaccel = {
.name = "vp9_vaapi",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VP9,
.pix_fmt = AV_PIX_FMT_VAAPI,
.start_frame = vaapi_vp9_start_frame,
.end_frame = vaapi_vp9_end_frame,
.decode_slice = vaapi_vp9_decode_slice,
.frame_priv_data_size = sizeof(VAAPIDecodePicture),
.init = ff_vaapi_decode_init,
.uninit = ff_vaapi_decode_uninit,
.priv_data_size = sizeof(VAAPIDecodeContext),
.caps_internal = HWACCEL_CAP_ASYNC_SAFE,
};