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