/* * 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 "dxva2_internal.h" #include "vc1.h" #include "vc1data.h" struct dxva2_picture_context { DXVA_PictureParameters pp; DXVA_SliceInfo si; const uint8_t *bitstream; unsigned bitstream_size; }; static void fill_picture_parameters(AVCodecContext *avctx, struct dxva_context *ctx, const VC1Context *v, DXVA_PictureParameters *pp) { const MpegEncContext *s = &v->s; const Picture *current_picture = s->current_picture_ptr; memset(pp, 0, sizeof(*pp)); pp->wDecodedPictureIndex = pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(ctx, current_picture); if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type) pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->last_picture); else pp->wForwardRefPictureIndex = 0xffff; if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->next_picture); 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) | ((ctx->cfg->ConfigIntraResidUnsigned != 0) << 6) | ((ctx->cfg->ConfigResidDiffAccelerator != 0) << 5) | ((v->lumscale != 32 || v->lumshift != 0) << 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; ctx->report_id++; if (ctx->report_id >= (1 << 16)) ctx->report_id = 1; pp->bPicScanFixed = ctx->report_id >> 8; pp->bPicScanMethod = ctx->report_id & 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) | (s->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 = 0; pp->bReservedBits = 0; if (s->picture_structure == PICT_FRAME) { pp->wBitstreamFcodes = v->lumscale; pp->wBitstreamPCEelements = v->lumshift; } else { /* Syntax: (top_field_param << 8) | bottom_field_param */ pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale; pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift; } 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 = 0; slice->wMBbitOffset = get_bits_count(&s->gb); slice->wNumberMBsInSlice = s->mb_width * s->mb_height; /* XXX We assume 1 slice */ slice->wQuantizerScaleCode = v->pq; slice->wBadSliceChopping = 0; } static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, DXVA2_DecodeBufferDesc *bs, DXVA2_DecodeBufferDesc *sc) { const VC1Context *v = avctx->priv_data; struct dxva_context *ctx = avctx->hwaccel_context; const MpegEncContext *s = &v->s; struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->f.hwaccel_picture_private; DXVA_SliceInfo *slice = &ctx_pic->si; 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 slice_size = slice->dwSliceBitsInBuffer / 8; const unsigned padding = 128 - ((start_code_size + slice_size) & 127); const unsigned data_size = start_code_size + slice_size + padding; uint8_t *dxva_data; unsigned dxva_size; int result; if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, DXVA2_BitStreamDateBufferType, (void **)&dxva_data, &dxva_size))) return -1; result = data_size <= dxva_size ? 0 : -1; if (!result) { if (start_code_size > 0) { memcpy(dxva_data, start_code, start_code_size); if (v->second_field) dxva_data[3] = 0x0c; } memcpy(dxva_data + start_code_size, ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size); if (padding > 0) memset(dxva_data + start_code_size + slice_size, 0, padding); slice->dwSliceBitsInBuffer = 8 * data_size; } if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, DXVA2_BitStreamDateBufferType))) return -1; if (result) return result; memset(bs, 0, sizeof(*bs)); bs->CompressedBufferType = DXVA2_BitStreamDateBufferType; bs->DataSize = data_size; bs->NumMBsInBuffer = s->mb_width * s->mb_height; assert((bs->DataSize & 127) == 0); return ff_dxva2_commit_buffer(avctx, ctx, sc, DXVA2_SliceControlBufferType, slice, sizeof(*slice), bs->NumMBsInBuffer); } 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; struct dxva_context *ctx = avctx->hwaccel_context; struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->f.hwaccel_picture_private; if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0) return -1; assert(ctx_pic); fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp); 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->f.hwaccel_picture_private; if (ctx_pic->bitstream_size > 0) return -1; if (avctx->codec_id == AV_CODEC_ID_VC1 && size >= 4 && IS_MARKER(AV_RB32(buffer))) { buffer += 4; size -= 4; } ctx_pic->bitstream_size = size; ctx_pic->bitstream = buffer; fill_slice(avctx, &ctx_pic->si, 0, 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->f.hwaccel_picture_private; int ret; if (ctx_pic->bitstream_size <= 0) return -1; ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr, &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, .start_frame = dxva2_vc1_start_frame, .decode_slice = dxva2_vc1_decode_slice, .end_frame = dxva2_vc1_end_frame, .priv_data_size = sizeof(struct dxva2_picture_context), }; #endif AVHWAccel ff_vc1_dxva2_hwaccel = { .name = "vc1_dxva2", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_VC1, .pix_fmt = AV_PIX_FMT_DXVA2_VLD, .start_frame = dxva2_vc1_start_frame, .decode_slice = dxva2_vc1_decode_slice, .end_frame = dxva2_vc1_end_frame, .priv_data_size = sizeof(struct dxva2_picture_context), };