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ffmpeg-rockchip/libavcodec/dxva2_vp9.c
Hendrik Leppkes 1e6cf7272f avcodec: implement vp9 dxva2 hwaccel
2015-12-07 09:38:59 +01:00

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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 "vp9.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_DECODER(avctx, ctx) == NULL ||
DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
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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