1/* 2 * DXVA2 WMV3/VC-1 HW acceleration. 3 * 4 * copyright (c) 2010 Laurent Aimar 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "dxva2_internal.h" 24#include "vc1.h" 25#include "vc1data.h" 26 27struct dxva2_picture_context { 28 DXVA_PictureParameters pp; 29 DXVA_SliceInfo si; 30 31 const uint8_t *bitstream; 32 unsigned bitstream_size; 33}; 34 35static void fill_picture_parameters(AVCodecContext *avctx, 36 struct dxva_context *ctx, const VC1Context *v, 37 DXVA_PictureParameters *pp) 38{ 39 const MpegEncContext *s = &v->s; 40 const Picture *current_picture = s->current_picture_ptr; 41 42 memset(pp, 0, sizeof(*pp)); 43 pp->wDecodedPictureIndex = 44 pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(ctx, current_picture); 45 if (s->pict_type != FF_I_TYPE) 46 pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->last_picture); 47 else 48 pp->wForwardRefPictureIndex = 0xffff; 49 if (s->pict_type == FF_B_TYPE) 50 pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(ctx, &s->next_picture); 51 else 52 pp->wBackwardRefPictureIndex = 0xffff; 53 if (v->profile == PROFILE_ADVANCED) { 54 /* It is the cropped width/height -1 of the frame */ 55 pp->wPicWidthInMBminus1 = avctx->width - 1; 56 pp->wPicHeightInMBminus1= avctx->height - 1; 57 } else { 58 /* It is the coded width/height in macroblock -1 of the frame */ 59 pp->wPicWidthInMBminus1 = s->mb_width - 1; 60 pp->wPicHeightInMBminus1= s->mb_height - 1; 61 } 62 pp->bMacroblockWidthMinus1 = 15; 63 pp->bMacroblockHeightMinus1 = 15; 64 pp->bBlockWidthMinus1 = 7; 65 pp->bBlockHeightMinus1 = 7; 66 pp->bBPPminus1 = 7; 67 if (s->picture_structure & PICT_TOP_FIELD) 68 pp->bPicStructure |= 0x01; 69 if (s->picture_structure & PICT_BOTTOM_FIELD) 70 pp->bPicStructure |= 0x02; 71 pp->bSecondField = v->interlace && v->fcm != 0x03 && !s->first_field; 72 pp->bPicIntra = s->pict_type == FF_I_TYPE; 73 pp->bPicBackwardPrediction = s->pict_type == FF_B_TYPE; 74 pp->bBidirectionalAveragingMode = (1 << 7) | 75 ((ctx->cfg->ConfigIntraResidUnsigned != 0) << 6) | 76 ((ctx->cfg->ConfigResidDiffAccelerator != 0) << 5) | 77 ((v->lumscale != 32 || v->lumshift != 0) << 4) | 78 ((v->profile == PROFILE_ADVANCED) << 3); 79 pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) | 80 (1 << 2) | 81 (0 << 1) | 82 (!s->quarter_sample ); 83 pp->bChromaFormat = v->chromaformat; 84 ctx->report_id++; 85 if (ctx->report_id >= (1 << 16)) 86 ctx->report_id = 1; 87 pp->bPicScanFixed = ctx->report_id >> 8; 88 pp->bPicScanMethod = ctx->report_id & 0xff; 89 pp->bPicReadbackRequests = 0; 90 pp->bRcontrol = v->rnd; 91 pp->bPicSpatialResid8 = (v->panscanflag << 7) | 92 (v->refdist_flag << 6) | 93 (s->loop_filter << 5) | 94 (v->fastuvmc << 4) | 95 (v->extended_mv << 3) | 96 (v->dquant << 1) | 97 (v->vstransform ); 98 pp->bPicOverflowBlocks = (v->quantizer_mode << 6) | 99 (v->multires << 5) | 100 (s->resync_marker << 4) | 101 (v->rangered << 3) | 102 (s->max_b_frames ); 103 pp->bPicExtrapolation = (!v->interlace || v->fcm == 0x00) ? 1 : 2; 104 pp->bPicDeblocked = ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) | 105 (s->loop_filter << 1); 106 pp->bPicDeblockConfined = (v->postprocflag << 7) | 107 (v->broadcast << 6) | 108 (v->interlace << 5) | 109 (v->tfcntrflag << 4) | 110 (v->finterpflag << 3) | 111 ((s->pict_type != FF_B_TYPE) << 2) | 112 (v->psf << 1) | 113 (v->extended_dmv ); 114 if (s->pict_type != FF_I_TYPE) 115 pp->bPic4MVallowed = v->mv_mode == MV_PMODE_MIXED_MV || 116 (v->mv_mode == MV_PMODE_INTENSITY_COMP && 117 v->mv_mode2 == MV_PMODE_MIXED_MV); 118 if (v->profile == PROFILE_ADVANCED) 119 pp->bPicOBMC = (v->range_mapy_flag << 7) | 120 (v->range_mapy << 4) | 121 (v->range_mapuv_flag << 3) | 122 (v->range_mapuv ); 123 pp->bPicBinPB = 0; 124 pp->bMV_RPS = 0; 125 pp->bReservedBits = 0; 126 if (s->picture_structure == PICT_FRAME) { 127 pp->wBitstreamFcodes = v->lumscale; 128 pp->wBitstreamPCEelements = v->lumshift; 129 } else { 130 /* Syntax: (top_field_param << 8) | bottom_field_param */ 131 pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale; 132 pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift; 133 } 134 pp->bBitstreamConcealmentNeed = 0; 135 pp->bBitstreamConcealmentMethod = 0; 136} 137 138static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice, 139 unsigned position, unsigned size) 140{ 141 const VC1Context *v = avctx->priv_data; 142 const MpegEncContext *s = &v->s; 143 144 memset(slice, 0, sizeof(*slice)); 145 slice->wHorizontalPosition = 0; 146 slice->wVerticalPosition = s->mb_y; 147 slice->dwSliceBitsInBuffer = 8 * size; 148 slice->dwSliceDataLocation = position; 149 slice->bStartCodeBitOffset = 0; 150 slice->bReservedBits = 0; 151 slice->wMBbitOffset = get_bits_count(&s->gb); 152 slice->wNumberMBsInSlice = s->mb_width * s->mb_height; /* XXX We assume 1 slice */ 153 slice->wQuantizerScaleCode = v->pq; 154 slice->wBadSliceChopping = 0; 155} 156 157static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, 158 DXVA2_DecodeBufferDesc *bs, 159 DXVA2_DecodeBufferDesc *sc) 160{ 161 const VC1Context *v = avctx->priv_data; 162 struct dxva_context *ctx = avctx->hwaccel_context; 163 const MpegEncContext *s = &v->s; 164 struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private; 165 166 DXVA_SliceInfo *slice = &ctx_pic->si; 167 168 static const uint8_t start_code[] = { 0, 0, 1, 0x0d }; 169 const unsigned start_code_size = avctx->codec_id == CODEC_ID_VC1 ? sizeof(start_code) : 0; 170 const unsigned slice_size = slice->dwSliceBitsInBuffer / 8; 171 const unsigned padding = 128 - ((start_code_size + slice_size) & 127); 172 const unsigned data_size = start_code_size + slice_size + padding; 173 174 uint8_t *dxva_data; 175 unsigned dxva_size; 176 int result; 177 178 if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, 179 DXVA2_BitStreamDateBufferType, 180 &dxva_data, &dxva_size))) 181 return -1; 182 183 result = data_size <= dxva_size ? 0 : -1; 184 if (!result) { 185 if (start_code_size > 0) 186 memcpy(dxva_data, start_code, start_code_size); 187 memcpy(dxva_data + start_code_size, 188 ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size); 189 if (padding > 0) 190 memset(dxva_data + start_code_size + slice_size, 0, padding); 191 slice->dwSliceBitsInBuffer = 8 * data_size; 192 } 193 if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, 194 DXVA2_BitStreamDateBufferType))) 195 return -1; 196 if (result) 197 return result; 198 199 memset(bs, 0, sizeof(*bs)); 200 bs->CompressedBufferType = DXVA2_BitStreamDateBufferType; 201 bs->DataSize = data_size; 202 bs->NumMBsInBuffer = s->mb_width * s->mb_height; 203 assert((bs->DataSize & 127) == 0); 204 205 return ff_dxva2_commit_buffer(avctx, ctx, sc, 206 DXVA2_SliceControlBufferType, 207 slice, sizeof(*slice), bs->NumMBsInBuffer); 208} 209 210static int start_frame(AVCodecContext *avctx, 211 av_unused const uint8_t *buffer, 212 av_unused uint32_t size) 213{ 214 const VC1Context *v = avctx->priv_data; 215 struct dxva_context *ctx = avctx->hwaccel_context; 216 struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private; 217 218 if (!ctx->decoder || !ctx->cfg || ctx->surface_count <= 0) 219 return -1; 220 assert(ctx_pic); 221 222 fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp); 223 224 ctx_pic->bitstream_size = 0; 225 ctx_pic->bitstream = NULL; 226 return 0; 227} 228 229static int decode_slice(AVCodecContext *avctx, 230 const uint8_t *buffer, uint32_t size) 231{ 232 const VC1Context *v = avctx->priv_data; 233 const Picture *current_picture = v->s.current_picture_ptr; 234 struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private; 235 236 if (ctx_pic->bitstream_size > 0) 237 return -1; 238 239 if (avctx->codec_id == CODEC_ID_VC1 && 240 size >= 4 && IS_MARKER(AV_RB32(buffer))) { 241 buffer += 4; 242 size -= 4; 243 } 244 245 ctx_pic->bitstream_size = size; 246 ctx_pic->bitstream = buffer; 247 248 fill_slice(avctx, &ctx_pic->si, 0, size); 249 return 0; 250} 251 252static int end_frame(AVCodecContext *avctx) 253{ 254 VC1Context *v = avctx->priv_data; 255 struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private; 256 257 if (ctx_pic->bitstream_size <= 0) 258 return -1; 259 260 return ff_dxva2_common_end_frame(avctx, &v->s, 261 &ctx_pic->pp, sizeof(ctx_pic->pp), 262 NULL, 0, 263 commit_bitstream_and_slice_buffer); 264} 265 266#if CONFIG_WMV3_DXVA2_HWACCEL 267AVHWAccel wmv3_dxva2_hwaccel = { 268 .name = "wmv3_dxva2", 269 .type = AVMEDIA_TYPE_VIDEO, 270 .id = CODEC_ID_WMV3, 271 .pix_fmt = PIX_FMT_DXVA2_VLD, 272 .capabilities = 0, 273 .start_frame = start_frame, 274 .decode_slice = decode_slice, 275 .end_frame = end_frame, 276 .priv_data_size = sizeof(struct dxva2_picture_context), 277}; 278#endif 279 280AVHWAccel vc1_dxva2_hwaccel = { 281 .name = "vc1_dxva2", 282 .type = AVMEDIA_TYPE_VIDEO, 283 .id = CODEC_ID_VC1, 284 .pix_fmt = PIX_FMT_DXVA2_VLD, 285 .capabilities = 0, 286 .start_frame = start_frame, 287 .decode_slice = decode_slice, 288 .end_frame = end_frame, 289 .priv_data_size = sizeof(struct dxva2_picture_context), 290}; 291 292