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 static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session,
  45                             AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref)
  46 {
  47     int ret;
  48
  49     if (session) {
  50         q->session = session;
  51     } else if (hw_frames_ref) {
  52         if (q->internal_session) {
  53             MFXClose(q->internal_session);
  54             q->internal_session = NULL;
  55         }
  56         av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
  57
  58         q->frames_ctx.hw_frames_ctx = av_buffer_ref(hw_frames_ref);
  59         if (!q->frames_ctx.hw_frames_ctx)
  60             return AVERROR(ENOMEM);
  61
  62         ret = ff_qsv_init_session_frames(avctx, &q->internal_session,
  63                                          &q->frames_ctx, q->load_plugins,
  64                                          q->iopattern == MFX_IOPATTERN_OUT_OPAQUE_MEMORY);
  65         if (ret < 0) {
  66             av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
  67             return ret;
  68         }
  69
  70         q->session = q->internal_session;
  71     } else if (hw_device_ref) {
  72         if (q->internal_session) {
  73             MFXClose(q->internal_session);
  74             q->internal_session = NULL;
  75         }
  76
  77         ret = ff_qsv_init_session_device(avctx, &q->internal_session,
  78                                          hw_device_ref, q->load_plugins);
  79         if (ret < 0)
  80             return ret;
  81
  82         q->session = q->internal_session;
  83     } else {
  84         if (!q->internal_session) {
  85             ret = ff_qsv_init_internal_session(avctx, &q->internal_session,
  86                                                q->load_plugins);
  87             if (ret < 0)
  88                 return ret;
  89         }
  90
  91         q->session = q->internal_session;
  92     }
  93
  94     /* make sure the decoder is uninitialized */
  95     MFXVideoDECODE_Close(q->session);
  96
  97     return 0;
  98 }
  99
 100 static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q)
 101 {
 102     const AVPixFmtDescriptor *desc;
 103     mfxSession session = NULL;
 104     int iopattern = 0;
 105     mfxVideoParam param = { 0 };
 106     int frame_width  = avctx->coded_width;
 107     int frame_height = avctx->coded_height;
 108     int ret;
 109
 110     desc = av_pix_fmt_desc_get(avctx->sw_pix_fmt);
 111     if (!desc)
 112         return AVERROR_BUG;
 113
 114     if (!q->async_fifo) {
 115         q->async_fifo = av_fifo_alloc((1 + q->async_depth) *
 116                                       (sizeof(mfxSyncPoint*) + sizeof(QSVFrame*)));
 117         if (!q->async_fifo)
 118             return AVERROR(ENOMEM);
 119     }
 120
 121     if (avctx->pix_fmt == AV_PIX_FMT_QSV && avctx->hwaccel_context) {
 122         AVQSVContext *user_ctx = avctx->hwaccel_context;
 123         session           = user_ctx->session;
 124         iopattern         = user_ctx->iopattern;
 125         q->ext_buffers    = user_ctx->ext_buffers;
 126         q->nb_ext_buffers = user_ctx->nb_ext_buffers;
 127     }
 128
 129     if (avctx->hw_frames_ctx) {
 130         AVHWFramesContext    *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
 131         AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 132
 133         if (!iopattern) {
 134             if (frames_hwctx->frame_type & MFX_MEMTYPE_OPAQUE_FRAME)
 135                 iopattern = MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
 136             else if (frames_hwctx->frame_type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)
 137                 iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
 138         }
 139
 140         frame_width  = frames_hwctx->surfaces[0].Info.Width;
 141         frame_height = frames_hwctx->surfaces[0].Info.Height;
 142     }
 143
 144     if (!iopattern)
 145         iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
 146     q->iopattern = iopattern;
 147
 148     ret = qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, avctx->hw_device_ctx);
 149     if (ret < 0) {
 150         av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
 151         return ret;
 152     }
 153
 154     ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
 155     if (ret < 0)
 156         return ret;
 157
 158     param.mfx.CodecId      = ret;
 159     param.mfx.CodecProfile = ff_qsv_profile_to_mfx(avctx->codec_id, avctx->profile);
 160     param.mfx.CodecLevel   = avctx->level == FF_LEVEL_UNKNOWN ? MFX_LEVEL_UNKNOWN : avctx->level;
 161
 162     param.mfx.FrameInfo.BitDepthLuma   = desc->comp[0].depth;
 163     param.mfx.FrameInfo.BitDepthChroma = desc->comp[0].depth;
 164     param.mfx.FrameInfo.Shift          = desc->comp[0].depth > 8;
 165     param.mfx.FrameInfo.FourCC         = q->fourcc;
 166     param.mfx.FrameInfo.Width          = frame_width;
 167     param.mfx.FrameInfo.Height         = frame_height;
 168     param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;
 169
 170     switch (avctx->field_order) {
 171     case AV_FIELD_PROGRESSIVE:
 172         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
 173         break;
 174     case AV_FIELD_TT:
 175         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_TFF;
 176         break;
 177     case AV_FIELD_BB:
 178         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_FIELD_BFF;
 179         break;
 180     default:
 181         param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_UNKNOWN;
 182         break;
 183     }
 184
 185     param.IOPattern   = q->iopattern;
 186     param.AsyncDepth  = q->async_depth;
 187     param.ExtParam    = q->ext_buffers;
 188     param.NumExtParam = q->nb_ext_buffers;
 189
 190     ret = MFXVideoDECODE_Init(q->session, &param);
 191     if (ret < 0)
 192         return ff_qsv_print_error(avctx, ret,
 193                                   "Error initializing the MFX video decoder");
 194
 195     q->frame_info = param.mfx.FrameInfo;
 196
 197     return 0;
 198 }
 199
 200 static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
 201 {
 202     int ret;
 203
 204     ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
 205     if (ret < 0)
 206         return ret;
 207
 208     if (frame->frame->format == AV_PIX_FMT_QSV) {
 209         frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
 210     } else {
 211         frame->surface.Info = q->frame_info;
 212
 213         frame->surface.Data.PitchLow = frame->frame->linesize[0];
 214         frame->surface.Data.Y        = frame->frame->data[0];
 215         frame->surface.Data.UV       = frame->frame->data[1];
 216     }
 217
 218     if (q->frames_ctx.mids) {
 219         ret = ff_qsv_find_surface_idx(&q->frames_ctx, frame);
 220         if (ret < 0)
 221             return ret;
 222
 223         frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
 224     }
 225
 226     frame->used = 1;
 227
 228     return 0;
 229 }
 230
 231 static void qsv_clear_unused_frames(QSVContext *q)
 232 {
 233     QSVFrame *cur = q->work_frames;
 234     while (cur) {
 235         if (cur->used && !cur->surface.Data.Locked && !cur->queued) {
 236             cur->used = 0;
 237             av_frame_unref(cur->frame);
 238         }
 239         cur = cur->next;
 240     }
 241 }
 242
 243 static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
 244 {
 245     QSVFrame *frame, **last;
 246     int ret;
 247
 248     qsv_clear_unused_frames(q);
 249
 250     frame = q->work_frames;
 251     last  = &q->work_frames;
 252     while (frame) {
 253         if (!frame->used) {
 254             ret = alloc_frame(avctx, q, frame);
 255             if (ret < 0)
 256                 return ret;
 257             *surf = &frame->surface;
 258             return 0;
 259         }
 260
 261         last  = &frame->next;
 262         frame = frame->next;
 263     }
 264
 265     frame = av_mallocz(sizeof(*frame));
 266     if (!frame)
 267         return AVERROR(ENOMEM);
 268     frame->frame = av_frame_alloc();
 269     if (!frame->frame) {
 270         av_freep(&frame);
 271         return AVERROR(ENOMEM);
 272     }
 273     *last = frame;
 274
 275     ret = alloc_frame(avctx, q, frame);
 276     if (ret < 0)
 277         return ret;
 278
 279     *surf = &frame->surface;
 280
 281     return 0;
 282 }
 283
 284 static QSVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
 285 {
 286     QSVFrame *cur = q->work_frames;
 287     while (cur) {
 288         if (surf == &cur->surface)
 289             return cur;
 290         cur = cur->next;
 291     }
 292     return NULL;
 293 }
 294
 295 static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
 296                       AVFrame *frame, int *got_frame,
 297                       AVPacket *avpkt)
 298 {
 299     QSVFrame *out_frame;
 300     mfxFrameSurface1 *insurf;
 301     mfxFrameSurface1 *outsurf;
 302     mfxSyncPoint *sync;
 303     mfxBitstream bs = { { { 0 } } };
 304     int ret;
 305
 306     if (avpkt->size) {
 307         bs.Data       = avpkt->data;
 308         bs.DataLength = avpkt->size;
 309         bs.MaxLength  = bs.DataLength;
 310         bs.TimeStamp  = avpkt->pts;
 311     }
 312
 313     sync = av_mallocz(sizeof(*sync));
 314     if (!sync) {
 315         av_freep(&sync);
 316         return AVERROR(ENOMEM);
 317     }
 318
 319     do {
 320         ret = get_surface(avctx, q, &insurf);
 321         if (ret < 0) {
 322             av_freep(&sync);
 323             return ret;
 324         }
 325
 326         ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
 327                                               insurf, &outsurf, sync);
 328         if (ret == MFX_WRN_DEVICE_BUSY)
 329             av_usleep(1);
 330
 331     } while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
 332
 333     if (ret != MFX_ERR_NONE &&
 334         ret != MFX_ERR_MORE_DATA &&
 335         ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
 336         ret != MFX_ERR_MORE_SURFACE) {
 337         av_freep(&sync);
 338         return ff_qsv_print_error(avctx, ret,
 339                                   "Error during QSV decoding.");
 340     }
 341
 342     /* make sure we do not enter an infinite loop if the SDK
 343      * did not consume any data and did not return anything */
 344     if (!*sync && !bs.DataOffset) {
 345         bs.DataOffset = avpkt->size;
 346         ++q->zero_consume_run;
 347         if (q->zero_consume_run > 1)
 348             ff_qsv_print_warning(avctx, ret, "A decode call did not consume any data");
 349     } else {
 350         q->zero_consume_run = 0;
 351     }
 352
 353     if (*sync) {
 354         QSVFrame *out_frame = find_frame(q, outsurf);
 355
 356         if (!out_frame) {
 357             av_log(avctx, AV_LOG_ERROR,
 358                    "The returned surface does not correspond to any frame\n");
 359             av_freep(&sync);
 360             return AVERROR_BUG;
 361         }
 362
 363         out_frame->queued = 1;
 364         av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 365         av_fifo_generic_write(q->async_fifo, &sync,      sizeof(sync),      NULL);
 366     } else {
 367         av_freep(&sync);
 368     }
 369
 370     if (!av_fifo_space(q->async_fifo) ||
 371         (!avpkt->size && av_fifo_size(q->async_fifo))) {
 372         AVFrame *src_frame;
 373
 374         av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 375         av_fifo_generic_read(q->async_fifo, &sync,      sizeof(sync),      NULL);
 376         out_frame->queued = 0;
 377
 378         if (avctx->pix_fmt != AV_PIX_FMT_QSV) {
 379             do {
 380                 ret = MFXVideoCORE_SyncOperation(q->session, *sync, 1000);
 381             } while (ret == MFX_WRN_IN_EXECUTION);
 382         }
 383
 384         av_freep(&sync);
 385
 386         src_frame = out_frame->frame;
 387
 388         ret = av_frame_ref(frame, src_frame);
 389         if (ret < 0)
 390             return ret;
 391
 392         outsurf = &out_frame->surface;
 393
 394 #if FF_API_PKT_PTS
 395 FF_DISABLE_DEPRECATION_WARNINGS
 396         frame->pkt_pts = outsurf->Data.TimeStamp;
 397 FF_ENABLE_DEPRECATION_WARNINGS
 398 #endif
 399         frame->pts = outsurf->Data.TimeStamp;
 400
 401         frame->repeat_pict =
 402             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
 403             outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
 404             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
 405         frame->top_field_first =
 406             outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
 407         frame->interlaced_frame =
 408             !(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
 409
 410         /* update the surface properties */
 411         if (avctx->pix_fmt == AV_PIX_FMT_QSV)
 412             ((mfxFrameSurface1*)frame->data[3])->Info = outsurf->Info;
 413
 414         *got_frame = 1;
 415     }
 416
 417     return bs.DataOffset;
 418 }
 419
 420 int ff_qsv_decode_close(QSVContext *q)
 421 {
 422     QSVFrame *cur = q->work_frames;
 423
 424     if (q->session)
 425         MFXVideoDECODE_Close(q->session);
 426
 427     while (q->async_fifo && av_fifo_size(q->async_fifo)) {
 428         QSVFrame *out_frame;
 429         mfxSyncPoint *sync;
 430
 431         av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
 432         av_fifo_generic_read(q->async_fifo, &sync,      sizeof(sync),      NULL);
 433
 434         av_freep(&sync);
 435     }
 436
 437     while (cur) {
 438         q->work_frames = cur->next;
 439         av_frame_free(&cur->frame);
 440         av_freep(&cur);
 441         cur = q->work_frames;
 442     }
 443
 444     av_fifo_free(q->async_fifo);
 445     q->async_fifo = NULL;
 446
 447     av_parser_close(q->parser);
 448     avcodec_free_context(&q->avctx_internal);
 449
 450     if (q->internal_session)
 451         MFXClose(q->internal_session);
 452
 453     av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
 454     av_buffer_unref(&q->frames_ctx.mids_buf);
 455
 456     return 0;
 457 }
 458
 459 int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
 460                         AVFrame *frame, int *got_frame, AVPacket *pkt)
 461 {
 462     uint8_t *dummy_data;
 463     int dummy_size;
 464     int ret;
 465
 466     if (!q->avctx_internal) {
 467         q->avctx_internal = avcodec_alloc_context3(NULL);
 468         if (!q->avctx_internal)
 469             return AVERROR(ENOMEM);
 470
 471         if (avctx->extradata) {
 472             q->avctx_internal->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
 473             if (!q->avctx_internal->extradata)
 474                 return AVERROR(ENOMEM);
 475
 476             memcpy(q->avctx_internal->extradata, avctx->extradata,
 477                    avctx->extradata_size);
 478             q->avctx_internal->extradata_size = avctx->extradata_size;
 479         }
 480
 481         q->parser = av_parser_init(avctx->codec_id);
 482         if (!q->parser)
 483             return AVERROR(ENOMEM);
 484
 485         q->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
 486         q->orig_pix_fmt   = AV_PIX_FMT_NONE;
 487     }
 488
 489     if (!pkt->size)
 490         return qsv_decode(avctx, q, frame, got_frame, pkt);
 491
 492     /* we assume the packets are already split properly and want
 493      * just the codec parameters here */
 494     av_parser_parse2(q->parser, q->avctx_internal,
 495                      &dummy_data, &dummy_size,
 496                      pkt->data, pkt->size, pkt->pts, pkt->dts,
 497                      pkt->pos);
 498
 499     /* TODO: flush delayed frames on reinit */
 500     if (q->parser->format       != q->orig_pix_fmt    ||
 501         q->parser->coded_width  != avctx->coded_width ||
 502         q->parser->coded_height != avctx->coded_height) {
 503         enum AVPixelFormat pix_fmts[3] = { AV_PIX_FMT_QSV,
 504                                            AV_PIX_FMT_NONE,
 505                                            AV_PIX_FMT_NONE };
 506         enum AVPixelFormat qsv_format;
 507
 508         qsv_format = ff_qsv_map_pixfmt(q->parser->format, &q->fourcc);
 509         if (qsv_format < 0) {
 510             av_log(avctx, AV_LOG_ERROR,
 511                    "Decoding pixel format '%s' is not supported\n",
 512                    av_get_pix_fmt_name(q->parser->format));
 513             ret = AVERROR(ENOSYS);
 514             goto reinit_fail;
 515         }
 516
 517         q->orig_pix_fmt     = q->parser->format;
 518         avctx->pix_fmt      = pix_fmts[1] = qsv_format;
 519         avctx->width        = q->parser->width;
 520         avctx->height       = q->parser->height;
 521         avctx->coded_width  = q->parser->coded_width;
 522         avctx->coded_height = q->parser->coded_height;
 523         avctx->field_order  = q->parser->field_order;
 524         avctx->level        = q->avctx_internal->level;
 525         avctx->profile      = q->avctx_internal->profile;
 526
 527         ret = ff_get_format(avctx, pix_fmts);
 528         if (ret < 0)
 529             goto reinit_fail;
 530
 531         avctx->pix_fmt = ret;
 532
 533         ret = qsv_decode_init(avctx, q);
 534         if (ret < 0)
 535             goto reinit_fail;
 536     }
 537
 538     return qsv_decode(avctx, q, frame, got_frame, pkt);
 539
 540 reinit_fail:
 541     q->orig_pix_fmt = q->parser->format = avctx->pix_fmt = AV_PIX_FMT_NONE;
 542     return ret;
 543 }
 544
 545 void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
 546 {
 547     q->orig_pix_fmt = AV_PIX_FMT_NONE;
 548 }