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FFmpeg/libavcodec/dxva2_vc1.c
wm4 70143a3954 dxva: add support for new dxva2 and d3d11 hwaccel APIs 
This also adds support to avconv (which is trivial due to the new
hwaccel API being generic enough).

The new decoder setup code in dxva2.c is significantly based on work by
Steve Lhomme <robux4@gmail.com>, but with heavy changes/rewrites.

Merges Libav commit f9e7a2f95a.
Also adds untested VP9 support.
The check for DXVA2 COBJs is removed. Just update your MinGW to
something newer than a 5 year old release.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2017-06-27 18:05:02 +02:00

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/*
* DXVA2 WMV3/VC-1 HW acceleration.
*
* copyright (c) 2010 Laurent Aimar
*
* 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 "mpegutils.h"
#include "vc1.h"
#include "vc1data.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"
#define MAX_SLICES 1024
struct dxva2_picture_context {
DXVA_PictureParameters pp;
unsigned slice_count;
DXVA_SliceInfo slice[MAX_SLICES];
const uint8_t *bitstream;
unsigned bitstream_size;
};
static void fill_picture_parameters(AVCodecContext *avctx,
AVDXVAContext *ctx, const VC1Context *v,
DXVA_PictureParameters *pp)
{
const MpegEncContext *s = &v->s;
const Picture *current_picture = s->current_picture_ptr;
int intcomp = 0;
// determine if intensity compensation is needed
if (s->pict_type == AV_PICTURE_TYPE_P) {
if ((v->fcm == ILACE_FRAME && v->intcomp) || (v->fcm != ILACE_FRAME && v->mv_mode == MV_PMODE_INTENSITY_COMP)) {
if (v->lumscale != 32 || v->lumshift != 0 || (s->picture_structure != PICT_FRAME && (v->lumscale2 != 32 || v->lumshift2 != 0)))
intcomp = 1;
}
}
memset(pp, 0, sizeof(*pp));
pp->wDecodedPictureIndex =
pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
else
pp->wForwardRefPictureIndex = 0xffff;
if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)
pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
else
pp->wBackwardRefPictureIndex = 0xffff;
if (v->profile == PROFILE_ADVANCED) {
/* It is the cropped width/height -1 of the frame */
pp->wPicWidthInMBminus1 = avctx->width - 1;
pp->wPicHeightInMBminus1= avctx->height - 1;
} else {
/* It is the coded width/height in macroblock -1 of the frame */
pp->wPicWidthInMBminus1 = s->mb_width - 1;
pp->wPicHeightInMBminus1= s->mb_height - 1;
}
pp->bMacroblockWidthMinus1 = 15;
pp->bMacroblockHeightMinus1 = 15;
pp->bBlockWidthMinus1 = 7;
pp->bBlockHeightMinus1 = 7;
pp->bBPPminus1 = 7;
if (s->picture_structure & PICT_TOP_FIELD)
pp->bPicStructure |= 0x01;
if (s->picture_structure & PICT_BOTTOM_FIELD)
pp->bPicStructure |= 0x02;
pp->bSecondField = v->interlace && v->fcm == ILACE_FIELD && v->second_field;
pp->bPicIntra = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type;
pp->bPicBackwardPrediction = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
pp->bBidirectionalAveragingMode = (1 << 7) |
((DXVA_CONTEXT_CFG_INTRARESID(avctx, ctx) != 0) << 6) |
((DXVA_CONTEXT_CFG_RESIDACCEL(avctx, ctx) != 0) << 5) |
(intcomp << 4) |
((v->profile == PROFILE_ADVANCED) << 3);
pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
(1 << 2) |
(0 << 1) |
(!s->quarter_sample );
pp->bChromaFormat = v->chromaformat;
DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
if (DXVA_CONTEXT_REPORT_ID(avctx, ctx) >= (1 << 16))
DXVA_CONTEXT_REPORT_ID(avctx, ctx) = 1;
pp->bPicScanFixed = DXVA_CONTEXT_REPORT_ID(avctx, ctx) >> 8;
pp->bPicScanMethod = DXVA_CONTEXT_REPORT_ID(avctx, ctx) & 0xff;
pp->bPicReadbackRequests = 0;
pp->bRcontrol = v->rnd;
pp->bPicSpatialResid8 = (v->panscanflag << 7) |
(v->refdist_flag << 6) |
(s->loop_filter << 5) |
(v->fastuvmc << 4) |
(v->extended_mv << 3) |
(v->dquant << 1) |
(v->vstransform );
pp->bPicOverflowBlocks = (v->quantizer_mode << 6) |
(v->multires << 5) |
(v->resync_marker << 4) |
(v->rangered << 3) |
(s->max_b_frames );
pp->bPicExtrapolation = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2;
pp->bPicDeblocked = ((!pp->bPicBackwardPrediction && v->overlap) << 6) |
((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
(s->loop_filter << 1);
pp->bPicDeblockConfined = (v->postprocflag << 7) |
(v->broadcast << 6) |
(v->interlace << 5) |
(v->tfcntrflag << 4) |
(v->finterpflag << 3) |
((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
(v->psf << 1) |
(v->extended_dmv );
if (s->pict_type != AV_PICTURE_TYPE_I)
pp->bPic4MVallowed = v->mv_mode == MV_PMODE_MIXED_MV ||
(v->mv_mode == MV_PMODE_INTENSITY_COMP &&
v->mv_mode2 == MV_PMODE_MIXED_MV);
if (v->profile == PROFILE_ADVANCED)
pp->bPicOBMC = (v->range_mapy_flag << 7) |
(v->range_mapy << 4) |
(v->range_mapuv_flag << 3) |
(v->range_mapuv );
pp->bPicBinPB = 0;
pp->bMV_RPS = (v->fcm == ILACE_FIELD && pp->bPicBackwardPrediction) ? v->refdist + 9 : 0;
pp->bReservedBits = v->pq;
if (s->picture_structure == PICT_FRAME) {
if (intcomp) {
pp->wBitstreamFcodes = v->lumscale;
pp->wBitstreamPCEelements = v->lumshift;
} else {
pp->wBitstreamFcodes = 32;
pp->wBitstreamPCEelements = 0;
}
} else {
/* Syntax: (top_field_param << 8) | bottom_field_param */
if (intcomp) {
pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale2;
pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift2;
} else {
pp->wBitstreamFcodes = (32 << 8) | 32;
pp->wBitstreamPCEelements = 0;
}
}
pp->bBitstreamConcealmentNeed = 0;
pp->bBitstreamConcealmentMethod = 0;
}
static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
unsigned position, unsigned size)
{
const VC1Context *v = avctx->priv_data;
const MpegEncContext *s = &v->s;
memset(slice, 0, sizeof(*slice));
slice->wHorizontalPosition = 0;
slice->wVerticalPosition = s->mb_y;
slice->dwSliceBitsInBuffer = 8 * size;
slice->dwSliceDataLocation = position;
slice->bStartCodeBitOffset = 0;
slice->bReservedBits = (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) ? v->bfraction_lut_index + 9 : 0;
slice->wMBbitOffset = v->p_frame_skipped ? 0xffff : get_bits_count(&s->gb) + (avctx->codec_id == AV_CODEC_ID_VC1 ? 32 : 0);
/* XXX We store the index of the first MB and it will be fixed later */
slice->wNumberMBsInSlice = (s->mb_y >> v->field_mode) * s->mb_width + s->mb_x;
slice->wQuantizerScaleCode = v->pq;
slice->wBadSliceChopping = 0;
}
static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
DECODER_BUFFER_DESC *bs,
DECODER_BUFFER_DESC *sc)
{
const VC1Context *v = avctx->priv_data;
AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
const MpegEncContext *s = &v->s;
struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
DXVA_SliceInfo *slice = NULL;
void *dxva_data_ptr;
uint8_t *dxva_data, *current, *end;
unsigned dxva_size;
unsigned padding;
unsigned i;
unsigned type;
#if CONFIG_D3D11VA
if (ff_dxva2_is_d3d11(avctx)) {
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;
current = dxva_data;
end = dxva_data + dxva_size;
for (i = 0; i < ctx_pic->slice_count; i++) {
unsigned position, size;
slice = &ctx_pic->slice[i];
position = slice->dwSliceDataLocation;
size = slice->dwSliceBitsInBuffer / 8;
if (start_code_size + size > end - current) {
av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
break;
}
slice->dwSliceDataLocation = current - dxva_data;
if (i < ctx_pic->slice_count - 1)
slice->wNumberMBsInSlice =
slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
else
slice->wNumberMBsInSlice =
mb_count - slice[0].wNumberMBsInSlice;
/* write the appropriate frame, field or slice start code */
if (start_code_size) {
memcpy(current, start_code, start_code_size);
if (i == 0 && v->second_field)
current[3] = 0x0c;
else if (i > 0)
current[3] = 0x0b;
current += start_code_size;
slice->dwSliceBitsInBuffer += start_code_size * 8;
}
memcpy(current, &ctx_pic->bitstream[position], size);
current += size;
}
padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
if (slice && padding > 0) {
memset(current, 0, padding);
current += padding;
slice->dwSliceBitsInBuffer += padding * 8;
}
#if CONFIG_D3D11VA
if (ff_dxva2_is_d3d11(avctx))
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 (i < ctx_pic->slice_count)
return -1;
#if CONFIG_D3D11VA
if (ff_dxva2_is_d3d11(avctx)) {
D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
memset(dsc11, 0, sizeof(*dsc11));
dsc11->BufferType = type;
dsc11->DataSize = current - dxva_data;
dsc11->NumMBsInBuffer = mb_count;
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 = current - dxva_data;
dsc2->NumMBsInBuffer = mb_count;
type = DXVA2_SliceControlBufferType;
}
#endif
return ff_dxva2_commit_buffer(avctx, ctx, sc,
type,
ctx_pic->slice,
ctx_pic->slice_count * sizeof(*ctx_pic->slice),
mb_count);
}
static int dxva2_vc1_start_frame(AVCodecContext *avctx,
av_unused const uint8_t *buffer,
av_unused uint32_t size)
{
const VC1Context *v = avctx->priv_data;
AVDXVAContext *ctx = DXVA_CONTEXT(avctx);
struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
if (!DXVA_CONTEXT_VALID(avctx, ctx))
return -1;
assert(ctx_pic);
fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
ctx_pic->slice_count = 0;
ctx_pic->bitstream_size = 0;
ctx_pic->bitstream = NULL;
return 0;
}
static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
const uint8_t *buffer,
uint32_t size)
{
const VC1Context *v = avctx->priv_data;
const Picture *current_picture = v->s.current_picture_ptr;
struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
unsigned position;
if (ctx_pic->slice_count >= MAX_SLICES) {
avpriv_request_sample(avctx, "%d slices in dxva2",
ctx_pic->slice_count);
return -1;
}
if (avctx->codec_id == AV_CODEC_ID_VC1 &&
size >= 4 && IS_MARKER(AV_RB32(buffer))) {
buffer += 4;
size -= 4;
}
if (!ctx_pic->bitstream)
ctx_pic->bitstream = buffer;
ctx_pic->bitstream_size += size;
position = buffer - ctx_pic->bitstream;
fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
return 0;
}
static int dxva2_vc1_end_frame(AVCodecContext *avctx)
{
VC1Context *v = avctx->priv_data;
struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
int ret;
if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
return -1;
ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,
&ctx_pic->pp, sizeof(ctx_pic->pp),
NULL, 0,
commit_bitstream_and_slice_buffer);
if (!ret)
ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
return ret;
}
#if CONFIG_WMV3_DXVA2_HWACCEL
AVHWAccel ff_wmv3_dxva2_hwaccel = {
.name = "wmv3_dxva2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
#if CONFIG_VC1_DXVA2_HWACCEL
AVHWAccel ff_vc1_dxva2_hwaccel = {
.name = "vc1_dxva2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.pix_fmt = AV_PIX_FMT_DXVA2_VLD,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
#if CONFIG_WMV3_D3D11VA_HWACCEL
AVHWAccel ff_wmv3_d3d11va_hwaccel = {
.name = "wmv3_d3d11va",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
#if CONFIG_WMV3_D3D11VA2_HWACCEL
AVHWAccel ff_wmv3_d3d11va2_hwaccel = {
.name = "wmv3_d3d11va2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV3,
.pix_fmt = AV_PIX_FMT_D3D11,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
#if CONFIG_VC1_D3D11VA_HWACCEL
AVHWAccel ff_vc1_d3d11va_hwaccel = {
.name = "vc1_d3d11va",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
#if CONFIG_VC1_D3D11VA2_HWACCEL
AVHWAccel ff_vc1_d3d11va2_hwaccel = {
.name = "vc1_d3d11va2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_VC1,
.pix_fmt = AV_PIX_FMT_D3D11,
.init = ff_dxva2_decode_init,
.uninit = ff_dxva2_decode_uninit,
.start_frame = dxva2_vc1_start_frame,
.decode_slice = dxva2_vc1_decode_slice,
.end_frame = dxva2_vc1_end_frame,
.frame_priv_data_size = sizeof(struct dxva2_picture_context),
.priv_data_size = sizeof(FFDXVASharedContext),
};
#endif
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