libavcodec/qsvdec.c

   1 /*
   2  * Intel MediaSDK QSV codec-independent code
   3  *
   4  * copyright (c) 2013 Luca Barbato
   5  * copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
   6  *
   7  * This file is part of Libav.
   8  *
   9  * Libav is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * Libav is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with Libav; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <string.h>
  25 #include <sys/types.h>
  26
  27 #include <mfx/mfxvideo.h>
  28
  29 #include "libavutil/common.h"
  30 #include "libavutil/hwcontext.h"
  31 #include "libavutil/hwcontext_qsv.h"
  32 #include "libavutil/mem.h"
  33 #include "libavutil/log.h"
  34 #include "libavutil/pixdesc.h"
  35 #include "libavutil/pixfmt.h"
  36 #include "libavutil/time.h"
  37
  38 #include "avcodec.h"
  39 #include "internal.h"
  40 #include "qsv.h"
  41 #include "qsv_internal.h"
  42 #include "qsvdec.h"
  43
  44 const AVCodecHWConfigInternal *ff_qsv_hw_configs[] = {
  45     &(const AVCodecHWConfigInternal) {
  46         .public = {
  47             .pix_fmt     = AV_PIX_FMT_QSV,
  48             .methods     = AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX |
  49                            AV_CODEC_HW_CONFIG_METHOD_AD_HOC,
  50             .device_type = AV_HWDEVICE_TYPE_QSV,
  51         },
  52         .hwaccel = NULL,
  53     },
  54     NULL
  55 };
  56
  57 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session,
  58                             AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref)
  59 {
  60     int ret;
  61
  62     if (session) {
  63         q->session = session;
  64     } else if (hw_frames_ref) {
  65         if (q->internal_session) {
  66             MFXClose(q->internal_session);
  67             q->internal_session = NULL;
  68         }
  69         av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
  70
  71         q->frames_ctx.hw_frames_ctx = av_buffer_ref(hw_frames_ref);
  72         if (!q->frames_ctx.hw_frames_ctx)
  73             return AVERROR(ENOMEM);
  74
  75         ret = ff_qsv_init_session_frames(avctx, &q->internal_session,
  76                                          &q->frames_ctx, q->load_plugins,
  77                                          q->iopattern == MFX_IOPATTERN_OUT_OPAQUE_MEMORY);
  78         if (ret < 0) {
  79             av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
  80             return ret;
  81         }
  82
  83         q->session = q->internal_session;
  84     } else if (hw_device_ref) {
  85         if (q->internal_session) {
  86             MFXClose(q->internal_session);
  87             q->internal_session = NULL;
  88         }
  89
  90         ret = ff_qsv_init_session_device(avctx, &q->internal_session,
  91                                          hw_device_ref, q->load_plugins);
  92         if (ret < 0)
  93             return ret;
  94
  95         q->session = q->internal_session;
  96     } else {
  97         if (!q->internal_session) {
  98             ret = ff_qsv_init_internal_session(avctx, &q->internal_session,
  99                                                q->load_plugins);
 100             if (ret < 0)
 101                 return ret;
 102         }
 103
 104         q->session = q->internal_session;
 105     }
 106
 107     /* make sure the decoder is uninitialized */
 108     MFXVideoDECODE_Close(q->session);
 109
 110     return 0;
 111 }
 112
 113 static inline unsigned int qsv_fifo_item_size(void)
 114 {
 115     return sizeof(mfxSyncPoint*) + sizeof(QSVFrame*);
 116 }
 117
 118 static inline unsigned int qsv_fifo_size(const AVFifoBuffer* fifo)
 119 {
 120     return av_fifo_size(fifo) / qsv_fifo_item_size();
 121 }
 122
 123 static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q)
 124 {
 125     const AVPixFmtDescriptor *desc;
 126     mfxSession session = NULL;
 127     int iopattern = 0;
 128     mfxVideoParam param = { 0 };
 129     int frame_width  = avctx->coded_width;
 130     int frame_height = avctx->coded_height;
 131     int ret;
 132
 133     desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
 134     if (!desc)
 135         return AVERROR_BUG;
 136
 137     if (!q->async_fifo) {
 138         q->async_fifo = av_fifo_alloc(q->async_depth * qsv_fifo_item_size());
 139         if (!q->async_fifo)
 140             return AVERROR(ENOMEM);
 141     }
 142
 143     if (avctx->pix_fmt == AV_PIX_FMT_QSV && avctx->hwaccel_context) {
 144         AVQSVContext *user_ctx = avctx->hwaccel_context;
 145         session           = user_ctx->session;
 146         iopattern         = user_ctx->iopattern;
 147         q->ext_buffers    = user_ctx->ext_buffers;
 148         q->nb_ext_buffers = user_ctx->nb_ext_buffers;
 149     }
 150
 151     if (avctx->hw_frames_ctx) {
 152         AVHWFramesContext    *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
 153         AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 154
 155         if (!iopattern) {
 156             if (frames_hwctx->frame_type & MFX_MEMTYPE_OPAQUE_FRAME)
 157                 iopattern = MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
 158             else if (frames_hwctx->frame_type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)
 159                 iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
 160         }
 161     }
 162
 163     if (!iopattern)
 164         iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
 165     q->iopattern = iopattern;
 166
 167     ret = qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, avctx->hw_device_ctx);
 168     if (ret < 0) {
 169         av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
 170         return ret;
 171     }
 172
 173     ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
 174     if (ret < 0)
 175         return ret;
 176
 177     param.mfx.CodecId      = ret;
 178     param.mfx.CodecProfile = ff_qsv_profile_to_mfx(avctx->codec_id, avctx->profile);
 179     param.mfx.CodecLevel   = avctx->level == FF_LEVEL_UNKNOWN ? MFX_LEVEL_UNKNOWN : avctx->level;
 180
 181     param.mfx.FrameInfo.BitDepthLuma   = desc->comp[0].depth;
 182     param.mfx.FrameInfo.BitDepthChroma = desc->comp[0].depth;
 183     param.mfx.FrameInfo.Shift          = desc->comp[0].depth > 8;
 184     param.mfx.FrameInfo.FourCC         = q->fourcc;
 185     param.mfx.FrameInfo.Width          = frame_width;
 186     param.mfx.FrameInfo.Height         = frame_height;
 187     param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;
 188
 189     switch (avctx->field_order) {
 190     case AV_FIELD_PROGRESSIVE:
 191         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
 192         break;
 193     case AV_FIELD_TT:
 194         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_TFF;
 195         break;
 196     case AV_FIELD_BB:
 197         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_BFF;
 198         break;
 199     default:
 200         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_UNKNOWN;
 201         break;
 202     }
 203
 204     param.IOPattern   = q->iopattern;
 205     param.AsyncDepth  = q->async_depth;
 206     param.ExtParam    = q->ext_buffers;
 207     param.NumExtParam = q->nb_ext_buffers;
 208
 209     ret = MFXVideoDECODE_Init(q->session, &param);
 210     if (ret < 0)
 211         return ff_qsv_print_error(avctx, ret,
 212                                   "Error initializing the MFX video decoder");
 213
 214     q->frame_info = param.mfx.FrameInfo;
 215
 216     return 0;
 217 }
 218
 219 static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
 220 {
 221     int ret;
 222
 223     ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
 224     if (ret < 0)
 225         return ret;
 226
 227     if (frame->frame->format == AV_PIX_FMT_QSV) {
 228         frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
 229     } else {
 230         frame->surface.Info = q->frame_info;
 231
 232         frame->surface.Data.PitchLow = frame->frame->linesize[0];
 233         frame->surface.Data.Y        = frame->frame->data[0];
 234         frame->surface.Data.UV       = frame->frame->data[1];
 235     }
 236
 237     if (q->frames_ctx.mids) {
 238         ret = ff_qsv_find_surface_idx(&q->frames_ctx, frame);
 239         if (ret < 0)
 240             return ret;
 241
 242         frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
 243     }
 244     frame->surface.Data.ExtParam    = &frame->ext_param;
 245     frame->surface.Data.NumExtParam = 1;
 246     frame->ext_param                = (mfxExtBuffer*)&frame->dec_info;
 247     frame->dec_info.Header.BufferId = MFX_EXTBUFF_DECODED_FRAME_INFO;
 248     frame->dec_info.Header.BufferSz = sizeof(frame->dec_info);
 249
 250     frame->used = 1;
 251
 252     return 0;
 253 }
 254
 255 static void qsv_clear_unused_frames(QSVContext *q)
 256 {
 257     QSVFrame *cur = q->work_frames;
 258     while (cur) {
 259         if (cur->used && !cur->surface.Data.Locked && !cur->queued) {
 260             cur->used = 0;
 261             av_frame_unref(cur->frame);
 262         }
 263         cur = cur->next;
 264     }
 265 }
 266
 267 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
 268 {
 269     QSVFrame *frame, **last;
 270     int ret;
 271
 272     qsv_clear_unused_frames(q);
 273
 274     frame = q->work_frames;
 275     last  = &q->work_frames;
 276     while (frame) {
 277         if (!frame->used) {
 278             ret = alloc_frame(avctx, q, frame);
 279             if (ret < 0)
 280                 return ret;
 281             *surf = &frame->surface;
 282             return 0;
 283         }
 284
 285         last  = &frame->next;
 286         frame = frame->next;
 287     }
 288
 289     frame = av_mallocz(sizeof(*frame));
 290     if (!frame)
 291         return AVERROR(ENOMEM);
 292     frame->frame = av_frame_alloc();
 293     if (!frame->frame) {
 294         av_freep(&frame);
 295         return AVERROR(ENOMEM);
 296     }
 297     *last = frame;
 298
 299     ret = alloc_frame(avctx, q, frame);
 300     if (ret < 0)
 301         return ret;
 302
 303     *surf = &frame->surface;
 304
 305     return 0;
 306 }
 307
 308 static QSVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
 309 {
 310     QSVFrame *cur = q->work_frames;
 311     while (cur) {
 312         if (surf == &cur->surface)
 313             return cur;
 314         cur = cur->next;
 315     }
 316     return NULL;
 317 }
 318
 319 static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
 320                       AVFrame *frame, int *got_frame,
 321                       AVPacket *avpkt)
 322 {
 323     QSVFrame *out_frame;
 324     mfxFrameSurface1 *insurf;
 325     mfxFrameSurface1 *outsurf;
 326     mfxSyncPoint *sync;
 327     mfxBitstream bs = { { { 0 } } };
 328     int ret;
 329
 330     if (avpkt->size) {
 331         bs.Data       = avpkt->data;
 332         bs.DataLength = avpkt->size;
 333         bs.MaxLength  = bs.DataLength;
 334         bs.TimeStamp  = avpkt->pts;
 335         if (avctx->field_order == AV_FIELD_PROGRESSIVE)
 336             bs.DataFlag   |= MFX_BITSTREAM_COMPLETE_FRAME;
 337     }
 338
 339     sync = av_mallocz(sizeof(*sync));
 340     if (!sync) {
 341         av_freep(&sync);
 342         return AVERROR(ENOMEM);
 343     }
 344
 345     do {
 346         ret = get_surface(avctx, q, &insurf);
 347         if (ret < 0) {
 348             av_freep(&sync);
 349             return ret;
 350         }
 351
 352         ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
 353                                               insurf, &outsurf, sync);
 354         if (ret == MFX_WRN_DEVICE_BUSY)
 355             av_usleep(1);
 356
 357     } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
 358
 359     if (ret != MFX_ERR_NONE &&
 360         ret != MFX_ERR_MORE_DATA &&
 361         ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
 362         ret != MFX_ERR_MORE_SURFACE) {
 363         av_freep(&sync);
 364         return ff_qsv_print_error(avctx, ret,
 365                                   "Error during QSV decoding.");
 366     }
 367
 368     /* make sure we do not enter an infinite loop if the SDK
 369      * did not consume any data and did not return anything */
 370     if (!*sync && !bs.DataOffset) {
 371         bs.DataOffset = avpkt->size;
 372         ++q->zero_consume_run;
 373         if (q->zero_consume_run > 1)
 374             ff_qsv_print_warning(avctx, ret, "A decode call did not consume any data");
 375     } else {
 376         q->zero_consume_run = 0;
 377     }
 378
 379     if (*sync) {
 380         QSVFrame *out_frame = find_frame(q, outsurf);
 381
 382         if (!out_frame) {
 383             av_log(avctx, AV_LOG_ERROR,
 384                    "The returned surface does not correspond to any frame\n");
 385             av_freep(&sync);
 386             return AVERROR_BUG;
 387         }
 388
 389         out_frame->queued = 1;
 390         av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 391         av_fifo_generic_write(q->async_fifo, &sync,      sizeof(sync),      NULL);
 392     } else {
 393         av_freep(&sync);
 394     }
 395
 396     if ((qsv_fifo_size(q->async_fifo) >= q->async_depth) ||
 397         (!avpkt->size && av_fifo_size(q->async_fifo))) {
 398         AVFrame *src_frame;
 399
 400         av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 401         av_fifo_generic_read(q->async_fifo, &sync,      sizeof(sync),      NULL);
 402         out_frame->queued = 0;
 403
 404         if (avctx->pix_fmt != AV_PIX_FMT_QSV) {
 405             do {
 406                 ret = MFXVideoCORE_SyncOperation(q->session, *sync, 1000);
 407             } while (ret == MFX_WRN_IN_EXECUTION);
 408         }
 409
 410         av_freep(&sync);
 411
 412         src_frame = out_frame->frame;
 413
 414         ret = av_frame_ref(frame, src_frame);
 415         if (ret < 0)
 416             return ret;
 417
 418         outsurf = &out_frame->surface;
 419
 420 #if FF_API_PKT_PTS
 421 FF_DISABLE_DEPRECATION_WARNINGS
 422         frame->pkt_pts = outsurf->Data.TimeStamp;
 423 FF_ENABLE_DEPRECATION_WARNINGS
 424 #endif
 425         frame->pts = outsurf->Data.TimeStamp;
 426
 427         frame->repeat_pict =
 428             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
 429             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
 430             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
 431         frame->top_field_first =
 432             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
 433         frame->interlaced_frame =
 434             !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
 435         frame->pict_type = ff_qsv_map_pictype(out_frame->dec_info.FrameType);
 436         //Key frame is IDR frame is only suitable for H264. For HEVC, IRAPs are key frames.
 437         if (avctx->codec_id == AV_CODEC_ID_H264)
 438             frame->key_frame = !!(out_frame->dec_info.FrameType & MFX_FRAMETYPE_IDR);
 439
 440         /* update the surface properties */
 441         if (avctx->pix_fmt == AV_PIX_FMT_QSV)
 442             ((mfxFrameSurface1*)frame->data[3])->Info = outsurf->Info;
 443
 444         *got_frame = 1;
 445     }
 446
 447     return bs.DataOffset;
 448 }
 449
 450 int ff_qsv_decode_close(QSVContext *q)
 451 {
 452     QSVFrame *cur = q->work_frames;
 453
 454     if (q->session)
 455         MFXVideoDECODE_Close(q->session);
 456
 457     while (q->async_fifo && av_fifo_size(q->async_fifo)) {
 458         QSVFrame *out_frame;
 459         mfxSyncPoint *sync;
 460
 461         av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 462         av_fifo_generic_read(q->async_fifo, &sync,      sizeof(sync),      NULL);
 463
 464         av_freep(&sync);
 465     }
 466
 467     while (cur) {
 468         q->work_frames = cur->next;
 469         av_frame_free(&cur->frame);
 470         av_freep(&cur);
 471         cur = q->work_frames;
 472     }
 473
 474     av_fifo_free(q->async_fifo);
 475     q->async_fifo = NULL;
 476
 477     av_parser_close(q->parser);
 478     avcodec_free_context(&q->avctx_internal);
 479
 480     if (q->internal_session)
 481         MFXClose(q->internal_session);
 482
 483     av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
 484     av_buffer_unref(&q->frames_ctx.mids_buf);
 485
 486     return 0;
 487 }
 488
 489 int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
 490                         AVFrame *frame, int *got_frame, AVPacket *pkt)
 491 {
 492     uint8_t *dummy_data;
 493     int dummy_size;
 494     int ret;
 495     const AVPixFmtDescriptor *desc;
 496
 497     if (!q->avctx_internal) {
 498         q->avctx_internal = avcodec_alloc_context3(NULL);
 499         if (!q->avctx_internal)
 500             return AVERROR(ENOMEM);
 501
 502         if (avctx->extradata) {
 503             q->avctx_internal->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
 504             if (!q->avctx_internal->extradata)
 505                 return AVERROR(ENOMEM);
 506
 507             memcpy(q->avctx_internal->extradata, avctx->extradata,
 508                    avctx->extradata_size);
 509             q->avctx_internal->extradata_size = avctx->extradata_size;
 510         }
 511
 512         q->parser = av_parser_init(avctx->codec_id);
 513         if (!q->parser)
 514             return AVERROR(ENOMEM);
 515
 516         q->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
 517         q->orig_pix_fmt   = AV_PIX_FMT_NONE;
 518     }
 519
 520     if (!pkt->size)
 521         return qsv_decode(avctx, q, frame, got_frame, pkt);
 522
 523     /* we assume the packets are already split properly and want
 524      * just the codec parameters here */
 525     av_parser_parse2(q->parser, q->avctx_internal,
 526                      &dummy_data, &dummy_size,
 527                      pkt->data, pkt->size, pkt->pts, pkt->dts,
 528                      pkt->pos);
 529
 530     avctx->field_order  = q->parser->field_order;
 531     /* TODO: flush delayed frames on reinit */
 532     if (q->parser->format       != q->orig_pix_fmt    ||
 533         FFALIGN(q->parser->coded_width, 16)  != FFALIGN(avctx->coded_width, 16) ||
 534         FFALIGN(q->parser->coded_height, 16) != FFALIGN(avctx->coded_height, 16)) {
 535         enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_QSV,
 536                                            AV_PIX_FMT_NONE,
 537                                            AV_PIX_FMT_NONE };
 538         enum AVPixelFormat qsv_format;
 539
 540         qsv_format = ff_qsv_map_pixfmt(q->parser->format, &q->fourcc);
 541         if (qsv_format < 0) {
 542             av_log(avctx, AV_LOG_ERROR,
 543                    "Decoding pixel format '%s' is not supported\n",
 544                    av_get_pix_fmt_name(q->parser->format));
 545             ret = AVERROR(ENOSYS);
 546             goto reinit_fail;
 547         }
 548
 549         q->orig_pix_fmt     = q->parser->format;
 550         avctx->pix_fmt      = pix_fmts[1] = qsv_format;
 551         avctx->width        = q->parser->width;
 552         avctx->height       = q->parser->height;
 553         avctx->coded_width  = FFALIGN(q->parser->coded_width, 16);
 554         avctx->coded_height = FFALIGN(q->parser->coded_height, 16);
 555         avctx->level        = q->avctx_internal->level;
 556         avctx->profile      = q->avctx_internal->profile;
 557
 558         ret = ff_get_format(avctx, pix_fmts);
 559         if (ret < 0)
 560             goto reinit_fail;
 561
 562         avctx->pix_fmt = ret;
 563
 564         desc = av_pix_fmt_desc_get(avctx->pix_fmt);
 565         if (!desc)
 566             goto reinit_fail;
 567
 568          if (desc->comp[0].depth > 8) {
 569             avctx->coded_width =  FFALIGN(q->parser->coded_width, 32);
 570             avctx->coded_height = FFALIGN(q->parser->coded_height, 32);
 571         }
 572
 573         ret = qsv_decode_init(avctx, q);
 574         if (ret < 0)
 575             goto reinit_fail;
 576     }
 577
 578     return qsv_decode(avctx, q, frame, got_frame, pkt);
 579
 580 reinit_fail:
 581     q->orig_pix_fmt = q->parser->format = avctx->pix_fmt = AV_PIX_FMT_NONE;
 582     return ret;
 583 }
 584
 585 void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
 586 {
 587     q->orig_pix_fmt = AV_PIX_FMT_NONE;
 588 }