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FFmpeg/libavcodec/dxva2_vp9.c
Ronald S. Bultje 0c46641784 vp9: split out generic decoding skeleton interface API from VP9 types. 
This allows vp9dsp.h to only include the VP9 types header, and not the
decoder skeleton interface which is for hardware decoders (dxva2/vaapi).
2017-03-28 18:04:27 -04:00

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/*
* DXVA2 VP9 HW acceleration.
*
* copyright (c) 2015 Hendrik Leppkes
*
* 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/avassert.h"
#include "libavutil/pixdesc.h"
#include "vp9shared.h"
// The headers above may include w32threads.h, which uses the original
// _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
// potentially newer version.
#include "dxva2_internal.h"
struct vp9_dxva2_picture_context {
DXVA_PicParams_VP9 pp;
DXVA_Slice_VPx_Short slice;
const uint8_t *bitstream;
unsigned bitstream_size;
};
static void fill_picture_entry(DXVA_PicEntry_VPx *pic,
unsigned index, unsigned flag)
{
av_assert0((index & 0x7f) == index && (flag & 0x01) == flag);
pic->bPicEntry = index | (flag << 7);
}
static int fill_picture_parameters(const AVCodecContext *avctx, AVDXVAContext *ctx, const VP9SharedContext *h,
DXVA_PicParams_VP9 *pp)
{
int i;
const AVPixFmtDescriptor * pixdesc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
if (!pixdesc)
return -1;
memset(pp, 0, sizeof(*pp));
fill_picture_entry(&pp->CurrPic, ff_dxva2_get_surface_index(avctx, ctx, h->frames[CUR_FRAME].tf.f), 0);
pp->profile = h->h.profile;
pp->wFormatAndPictureInfoFlags = ((h->h.keyframe == 0) << 0) |
((h->h.invisible == 0) << 1) |
(h->h.errorres << 2) |
(pixdesc->log2_chroma_w << 3) | /* subsampling_x */
(pixdesc->log2_chroma_h << 4) | /* subsampling_y */
(0 << 5) | /* extra_plane */
(h->h.refreshctx << 6) |
(h->h.parallelmode << 7) |
(h->h.intraonly << 8) |
(h->h.framectxid << 9) |
(h->h.resetctx << 11) |
((h->h.keyframe ? 0 : h->h.highprecisionmvs) << 13) |
(0 << 14); /* ReservedFormatInfo2Bits */
pp->width = avctx->width;
pp->height = avctx->height;
pp->BitDepthMinus8Luma = pixdesc->comp[0].depth - 8;
pp->BitDepthMinus8Chroma = pixdesc->comp[1].depth - 8;
/* swap 0/1 to match the reference */
pp->interp_filter = h->h.filtermode ^ (h->h.filtermode <= 1);
pp->Reserved8Bits = 0;
for (i = 0; i < 8; i++) {
if (h->refs[i].f->buf[0]) {
fill_picture_entry(&pp->ref_frame_map[i], ff_dxva2_get_surface_index(avctx, ctx, h->refs[i].f), 0);
pp->ref_frame_coded_width[i] = h->refs[i].f->width;
pp->ref_frame_coded_height[i] = h->refs[i].f->height;
} else
pp->ref_frame_map[i].bPicEntry = 0xFF;
}
for (i = 0; i < 3; i++) {
uint8_t refidx = h->h.refidx[i];
if (h->refs[refidx].f->buf[0])
fill_picture_entry(&pp->frame_refs[i], ff_dxva2_get_surface_index(avctx, ctx, h->refs[refidx].f), 0);
else
pp->frame_refs[i].bPicEntry = 0xFF;
pp->ref_frame_sign_bias[i + 1] = h->h.signbias[i];
}
pp->filter_level = h->h.filter.level;
pp->sharpness_level = h->h.filter.sharpness;
pp->wControlInfoFlags = (h->h.lf_delta.enabled << 0) |
(h->h.lf_delta.updated << 1) |
(h->h.use_last_frame_mvs << 2) |
(0 << 3); /* ReservedControlInfo5Bits */
for (i = 0; i < 4; i++)
pp->ref_deltas[i] = h->h.lf_delta.ref[i];
for (i = 0; i < 2; i++)
pp->mode_deltas[i] = h->h.lf_delta.mode[i];
pp->base_qindex = h->h.yac_qi;
pp->y_dc_delta_q = h->h.ydc_qdelta;
pp->uv_dc_delta_q = h->h.uvdc_qdelta;
pp->uv_ac_delta_q = h->h.uvac_qdelta;
/* segmentation data */
pp->stVP9Segments.wSegmentInfoFlags = (h->h.segmentation.enabled << 0) |
(h->h.segmentation.update_map << 1) |
(h->h.segmentation.temporal << 2) |
(h->h.segmentation.absolute_vals << 3) |
(0 << 4); /* ReservedSegmentFlags4Bits */
for (i = 0; i < 7; i++)
pp->stVP9Segments.tree_probs[i] = h->h.segmentation.prob[i];
if (h->h.segmentation.temporal)
for (i = 0; i < 3; i++)
pp->stVP9Segments.pred_probs[i] = h->h.segmentation.pred_prob[i];
else
memset(pp->stVP9Segments.pred_probs, 255, sizeof(pp->stVP9Segments.pred_probs));
for (i = 0; i < 8; i++) {
pp->stVP9Segments.feature_mask[i] = (h->h.segmentation.feat[i].q_enabled << 0) |
(h->h.segmentation.feat[i].lf_enabled << 1) |
(h->h.segmentation.feat[i].ref_enabled << 2) |
(h->h.segmentation.feat[i].skip_enabled << 3);
pp->stVP9Segments.feature_data[i][0] = h->h.segmentation.feat[i].q_val;
pp->stVP9Segments.feature_data[i][1] = h->h.segmentation.feat[i].lf_val;
pp->stVP9Segments.feature_data[i][2] = h->h.segmentation.feat[i].ref_val;
pp->stVP9Segments.feature_data[i][3] = 0; /* no data for skip */
}
pp->log2_tile_cols = h->h.tiling.log2_tile_cols;
pp->log2_tile_rows = h->h.tiling.log2_tile_rows;
pp->uncompressed_header_size_byte_aligned = h->h.uncompressed_header_size;
pp->first_partition_size = h->h.compressed_header_size;
pp->StatusReportFeedbackNumber = 1 + DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
return 0;
}
static void fill_slice_short(DXVA_Slice_VPx_Short *slice,
unsigned position, unsigned size)
{
memset(slice, 0, sizeof(*slice));
slice->BSNALunitDataLocation = position;
slice->SliceBytesInBuffer = size;
slice->wBadSliceChopping = 0;
}
static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
DECODER_BUFFER_DESC *bs,
DECODER_BUFFER_DESC *sc)
{
const VP9SharedContext *h = avctx->priv_data;
AVDXVAContext *ctx = avctx->hwaccel_context;
struct vp9_dxva2_picture_context *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
void *dxva_data_ptr;
uint8_t *dxva_data;
unsigned dxva_size;
unsigned padding;
unsigned type;
#if CONFIG_D3D11VA
if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
D3D11VA_CONTEXT(ctx)->decoder,
type,
&dxva_size, &dxva_data_ptr)))
return -1;
}
#endif
#if CONFIG_DXVA2
if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
type = DXVA2_BitStreamDateBufferType;
if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
type,
&dxva_data_ptr, &dxva_size)))
return -1;
}
#endif
dxva_data = dxva_data_ptr;
if (ctx_pic->slice.SliceBytesInBuffer > dxva_size) {
av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
return -1;
}
memcpy(dxva_data, ctx_pic->bitstream, ctx_pic->slice.SliceBytesInBuffer);
padding = FFMIN(128 - ((ctx_pic->slice.SliceBytesInBuffer) & 127), dxva_size - ctx_pic->slice.SliceBytesInBuffer);
if (padding > 0) {
memset(dxva_data + ctx_pic->slice.SliceBytesInBuffer, 0, padding);
ctx_pic->slice.SliceBytesInBuffer += padding;
}
#if CONFIG_D3D11VA
if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
return -1;
#endif
#if CONFIG_DXVA2
if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
return -1;
#endif
#if CONFIG_D3D11VA
if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
memset(dsc11, 0, sizeof(*dsc11));
dsc11->BufferType = type;
dsc11->DataSize = ctx_pic->slice.SliceBytesInBuffer;
dsc11->NumMBsInBuffer = 0;
type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
}
#endif
#if CONFIG_DXVA2
if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
DXVA2_DecodeBufferDesc *dsc2 = bs;
memset(dsc2, 0, sizeof(*dsc2));
dsc2->CompressedBufferType = type;
dsc2->DataSize = ctx_pic->slice.SliceBytesInBuffer;
dsc2->NumMBsInBuffer = 0;
type = DXVA2_SliceControlBufferType;
}
#endif
return ff_dxva2_commit_buffer(avctx, ctx, sc,
type,
&ctx_pic->slice, sizeof(ctx_pic->slice), 0);
}
static int dxva2_vp9_start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
const VP9SharedContext *h = avctx->priv_data;
AVDXVAContext *ctx = avctx->hwaccel_context;
struct vp9_dxva2_picture_context *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
if (!DXVA_CONTEXT_VALID(avctx, ctx))
return -1;
av_assert0(ctx_pic);
/* Fill up DXVA_PicParams_VP9 */
if (fill_picture_parameters(avctx, ctx, h, &ctx_pic->pp) < 0)
return -1;
ctx_pic->bitstream_size = 0;
ctx_pic->bitstream = NULL;
return 0;
}
static int dxva2_vp9_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
const VP9SharedContext *h = avctx->priv_data;
struct vp9_dxva2_picture_context *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
unsigned position;
if (!ctx_pic->bitstream)
ctx_pic->bitstream = buffer;
ctx_pic->bitstream_size += size;
position = buffer - ctx_pic->bitstream;
fill_slice_short(&ctx_pic->slice, position, size);
return 0;
}
static int dxva2_vp9_end_frame(AVCodecContext *avctx)
{
VP9SharedContext *h = avctx->priv_data;
struct vp9_dxva2_picture_context *ctx_pic = h->frames[CUR_FRAME].hwaccel_picture_private;
int ret;
if (ctx_pic->bitstream_size <= 0)
return -1;
ret = ff_dxva2_common_end_frame(avctx, h->frames[CUR_FRAME].tf.f,
&ctx_pic->pp, sizeof(ctx_pic->pp),
NULL, 0,
commit_bitstream_and_slice_buffer);
return ret;
}
#if CONFIG_VP9_DXVA2_HWACCEL
AVHWAccel ff_vp9_dxva2_hwaccel = {
.name = "vp9_dxva2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VP9,
.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
.start_frame = dxva2_vp9_start_frame,
.decode_slice = dxva2_vp9_decode_slice,
.end_frame = dxva2_vp9_end_frame,
.frame_priv_data_size = sizeof(struct vp9_dxva2_picture_context),
};
#endif
#if CONFIG_VP9_D3D11VA_HWACCEL
AVHWAccel ff_vp9_d3d11va_hwaccel = {
.name = "vp9_d3d11va",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VP9,
.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
.start_frame = dxva2_vp9_start_frame,
.decode_slice = dxva2_vp9_decode_slice,
.end_frame = dxva2_vp9_end_frame,
.frame_priv_data_size = sizeof(struct vp9_dxva2_picture_context),
};
#endif
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