292 lines
12 KiB
C
292 lines
12 KiB
C
/*
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* DXVA2 WMV3/VC-1 HW acceleration.
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*
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* copyright (c) 2010 Laurent Aimar
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "dxva2_internal.h"
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#include "vc1.h"
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#include "vc1data.h"
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struct dxva2_picture_context {
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DXVA_PictureParameters pp;
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DXVA_SliceInfo si;
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const uint8_t *bitstream;
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unsigned bitstream_size;
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};
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static void fill_picture_parameters(AVCodecContext *avctx,
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struct dxva_context *ctx, const VC1Context *v,
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DXVA_PictureParameters *pp)
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{
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const MpegEncContext *s = &v->s;
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const Picture *current_picture = s->current_picture_ptr;
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memset(pp, 0, sizeof(*pp));
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pp->wDecodedPictureIndex =
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pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(ctx, current_picture);
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if (s->pict_type != AV_PICTURE_TYPE_I)
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pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->last_picture);
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else
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pp->wForwardRefPictureIndex = 0xffff;
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if (s->pict_type == AV_PICTURE_TYPE_B)
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pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->next_picture);
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else
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pp->wBackwardRefPictureIndex = 0xffff;
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if (v->profile == PROFILE_ADVANCED) {
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/* It is the cropped width/height -1 of the frame */
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pp->wPicWidthInMBminus1 = avctx->width - 1;
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pp->wPicHeightInMBminus1= avctx->height - 1;
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} else {
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/* It is the coded width/height in macroblock -1 of the frame */
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pp->wPicWidthInMBminus1 = s->mb_width - 1;
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pp->wPicHeightInMBminus1= s->mb_height - 1;
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}
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pp->bMacroblockWidthMinus1 = 15;
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pp->bMacroblockHeightMinus1 = 15;
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pp->bBlockWidthMinus1 = 7;
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pp->bBlockHeightMinus1 = 7;
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pp->bBPPminus1 = 7;
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if (s->picture_structure & PICT_TOP_FIELD)
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pp->bPicStructure |= 0x01;
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if (s->picture_structure & PICT_BOTTOM_FIELD)
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pp->bPicStructure |= 0x02;
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pp->bSecondField = v->interlace && v->fcm != 0x03 && !s->first_field;
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pp->bPicIntra = s->pict_type == AV_PICTURE_TYPE_I;
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pp->bPicBackwardPrediction = s->pict_type == AV_PICTURE_TYPE_B;
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pp->bBidirectionalAveragingMode = (1 << 7) |
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((ctx->cfg->ConfigIntraResidUnsigned != 0) << 6) |
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((ctx->cfg->ConfigResidDiffAccelerator != 0) << 5) |
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((v->lumscale != 32 || v->lumshift != 0) << 4) |
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((v->profile == PROFILE_ADVANCED) << 3);
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pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
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(1 << 2) |
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(0 << 1) |
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(!s->quarter_sample );
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pp->bChromaFormat = v->chromaformat;
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ctx->report_id++;
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if (ctx->report_id >= (1 << 16))
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ctx->report_id = 1;
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pp->bPicScanFixed = ctx->report_id >> 8;
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pp->bPicScanMethod = ctx->report_id & 0xff;
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pp->bPicReadbackRequests = 0;
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pp->bRcontrol = v->rnd;
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pp->bPicSpatialResid8 = (v->panscanflag << 7) |
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(v->refdist_flag << 6) |
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(s->loop_filter << 5) |
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(v->fastuvmc << 4) |
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(v->extended_mv << 3) |
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(v->dquant << 1) |
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(v->vstransform );
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pp->bPicOverflowBlocks = (v->quantizer_mode << 6) |
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(v->multires << 5) |
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(s->resync_marker << 4) |
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(v->rangered << 3) |
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(s->max_b_frames );
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pp->bPicExtrapolation = (!v->interlace || v->fcm == 0x00) ? 1 : 2;
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pp->bPicDeblocked = ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
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(s->loop_filter << 1);
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pp->bPicDeblockConfined = (v->postprocflag << 7) |
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(v->broadcast << 6) |
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(v->interlace << 5) |
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(v->tfcntrflag << 4) |
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(v->finterpflag << 3) |
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((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
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(v->psf << 1) |
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(v->extended_dmv );
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if (s->pict_type != AV_PICTURE_TYPE_I)
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pp->bPic4MVallowed = v->mv_mode == MV_PMODE_MIXED_MV ||
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(v->mv_mode == MV_PMODE_INTENSITY_COMP &&
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v->mv_mode2 == MV_PMODE_MIXED_MV);
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if (v->profile == PROFILE_ADVANCED)
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pp->bPicOBMC = (v->range_mapy_flag << 7) |
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(v->range_mapy << 4) |
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(v->range_mapuv_flag << 3) |
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(v->range_mapuv );
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pp->bPicBinPB = 0;
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pp->bMV_RPS = 0;
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pp->bReservedBits = 0;
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if (s->picture_structure == PICT_FRAME) {
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pp->wBitstreamFcodes = v->lumscale;
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pp->wBitstreamPCEelements = v->lumshift;
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} else {
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/* Syntax: (top_field_param << 8) | bottom_field_param */
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pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale;
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pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift;
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}
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pp->bBitstreamConcealmentNeed = 0;
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pp->bBitstreamConcealmentMethod = 0;
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}
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static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
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unsigned position, unsigned size)
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{
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const VC1Context *v = avctx->priv_data;
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const MpegEncContext *s = &v->s;
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memset(slice, 0, sizeof(*slice));
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slice->wHorizontalPosition = 0;
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slice->wVerticalPosition = s->mb_y;
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slice->dwSliceBitsInBuffer = 8 * size;
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slice->dwSliceDataLocation = position;
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slice->bStartCodeBitOffset = 0;
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slice->bReservedBits = 0;
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slice->wMBbitOffset = get_bits_count(&s->gb);
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slice->wNumberMBsInSlice = s->mb_width * s->mb_height; /* XXX We assume 1 slice */
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slice->wQuantizerScaleCode = v->pq;
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slice->wBadSliceChopping = 0;
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}
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static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
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DXVA2_DecodeBufferDesc *bs,
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DXVA2_DecodeBufferDesc *sc)
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{
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const VC1Context *v = avctx->priv_data;
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struct dxva_context *ctx = avctx->hwaccel_context;
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const MpegEncContext *s = &v->s;
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struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
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DXVA_SliceInfo *slice = &ctx_pic->si;
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static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
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const unsigned start_code_size = avctx->codec_id == CODEC_ID_VC1 ? sizeof(start_code) : 0;
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const unsigned slice_size = slice->dwSliceBitsInBuffer / 8;
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const unsigned padding = 128 - ((start_code_size + slice_size) & 127);
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const unsigned data_size = start_code_size + slice_size + padding;
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uint8_t *dxva_data;
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unsigned dxva_size;
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int result;
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if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder,
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DXVA2_BitStreamDateBufferType,
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&dxva_data, &dxva_size)))
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return -1;
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result = data_size <= dxva_size ? 0 : -1;
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if (!result) {
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if (start_code_size > 0)
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memcpy(dxva_data, start_code, start_code_size);
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memcpy(dxva_data + start_code_size,
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ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size);
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if (padding > 0)
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memset(dxva_data + start_code_size + slice_size, 0, padding);
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slice->dwSliceBitsInBuffer = 8 * data_size;
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}
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if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder,
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DXVA2_BitStreamDateBufferType)))
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return -1;
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if (result)
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return result;
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memset(bs, 0, sizeof(*bs));
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bs->CompressedBufferType = DXVA2_BitStreamDateBufferType;
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bs->DataSize = data_size;
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bs->NumMBsInBuffer = s->mb_width * s->mb_height;
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assert((bs->DataSize & 127) == 0);
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return ff_dxva2_commit_buffer(avctx, ctx, sc,
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DXVA2_SliceControlBufferType,
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slice, sizeof(*slice), bs->NumMBsInBuffer);
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}
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static int start_frame(AVCodecContext *avctx,
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av_unused const uint8_t *buffer,
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av_unused uint32_t size)
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{
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const VC1Context *v = avctx->priv_data;
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struct dxva_context *ctx = avctx->hwaccel_context;
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struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
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if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0)
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return -1;
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assert(ctx_pic);
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fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
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ctx_pic->bitstream_size = 0;
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ctx_pic->bitstream = NULL;
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return 0;
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}
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static int decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer, uint32_t size)
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{
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const VC1Context *v = avctx->priv_data;
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const Picture *current_picture = v->s.current_picture_ptr;
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struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
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if (ctx_pic->bitstream_size > 0)
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return -1;
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if (avctx->codec_id == CODEC_ID_VC1 &&
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size >= 4 && IS_MARKER(AV_RB32(buffer))) {
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buffer += 4;
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size -= 4;
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}
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ctx_pic->bitstream_size = size;
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ctx_pic->bitstream = buffer;
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fill_slice(avctx, &ctx_pic->si, 0, size);
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return 0;
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}
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static int end_frame(AVCodecContext *avctx)
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{
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VC1Context *v = avctx->priv_data;
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struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
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if (ctx_pic->bitstream_size <= 0)
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return -1;
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return ff_dxva2_common_end_frame(avctx, &v->s,
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&ctx_pic->pp, sizeof(ctx_pic->pp),
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NULL, 0,
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commit_bitstream_and_slice_buffer);
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}
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#if CONFIG_WMV3_DXVA2_HWACCEL
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AVHWAccel ff_wmv3_dxva2_hwaccel = {
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.name = "wmv3_dxva2",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_WMV3,
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.pix_fmt = PIX_FMT_DXVA2_VLD,
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.capabilities = 0,
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.start_frame = start_frame,
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.decode_slice = decode_slice,
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.end_frame = end_frame,
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.priv_data_size = sizeof(struct dxva2_picture_context),
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};
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#endif
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AVHWAccel ff_vc1_dxva2_hwaccel = {
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.name = "vc1_dxva2",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_VC1,
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.pix_fmt = PIX_FMT_DXVA2_VLD,
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.capabilities = 0,
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.start_frame = start_frame,
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.decode_slice = decode_slice,
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.end_frame = end_frame,
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.priv_data_size = sizeof(struct dxva2_picture_context),
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};
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