libavcodec/qsvenc.c

   1 /*
   2  * Intel MediaSDK QSV encoder utility functions
   3  *
   4  * copyright (c) 2013 Yukinori Yamazoe
   5  * copyright (c) 2015 Anton Khirnov
   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 #include <mfx/mfxvideo.h>
  27
  28 #include "libavutil/common.h"
  29 #include "libavutil/mem.h"
  30 #include "libavutil/log.h"
  31 #include "libavutil/time.h"
  32 #include "libavutil/imgutils.h"
  33
  34 #include "avcodec.h"
  35 #include "internal.h"
  36 #include "qsv.h"
  37 #include "qsv_internal.h"
  38 #include "qsvenc.h"
  39
  40 static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
  41 {
  42     const char *ratecontrol_desc;
  43
  44     float quant;
  45     int ret;
  46
  47     ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
  48     if (ret < 0)
  49         return AVERROR_BUG;
  50     q->param.mfx.CodecId = ret;
  51
  52     q->width_align = avctx->codec_id == AV_CODEC_ID_HEVC ? 32 : 16;
  53
  54     if (avctx->level > 0)
  55         q->param.mfx.CodecLevel = avctx->level;
  56
  57     q->param.mfx.CodecProfile       = q->profile;
  58     q->param.mfx.TargetUsage        = q->preset;
  59     q->param.mfx.GopPicSize         = FFMAX(0, avctx->gop_size);
  60     q->param.mfx.GopRefDist         = FFMAX(-1, avctx->max_b_frames) + 1;
  61     q->param.mfx.GopOptFlag         = avctx->flags & AV_CODEC_FLAG_CLOSED_GOP ?
  62                                       MFX_GOP_CLOSED : 0;
  63     q->param.mfx.IdrInterval        = q->idr_interval;
  64     q->param.mfx.NumSlice           = avctx->slices;
  65     q->param.mfx.NumRefFrame        = FFMAX(0, avctx->refs);
  66     q->param.mfx.EncodedOrder       = 0;
  67     q->param.mfx.BufferSizeInKB     = 0;
  68
  69     q->param.mfx.FrameInfo.FourCC         = MFX_FOURCC_NV12;
  70     q->param.mfx.FrameInfo.Width          = FFALIGN(avctx->width, q->width_align);
  71     q->param.mfx.FrameInfo.Height         = FFALIGN(avctx->height, 32);
  72     q->param.mfx.FrameInfo.CropX          = 0;
  73     q->param.mfx.FrameInfo.CropY          = 0;
  74     q->param.mfx.FrameInfo.CropW          = avctx->width;
  75     q->param.mfx.FrameInfo.CropH          = avctx->height;
  76     q->param.mfx.FrameInfo.AspectRatioW   = avctx->sample_aspect_ratio.num;
  77     q->param.mfx.FrameInfo.AspectRatioH   = avctx->sample_aspect_ratio.den;
  78     q->param.mfx.FrameInfo.PicStruct      = MFX_PICSTRUCT_PROGRESSIVE;
  79     q->param.mfx.FrameInfo.ChromaFormat   = MFX_CHROMAFORMAT_YUV420;
  80     q->param.mfx.FrameInfo.BitDepthLuma   = 8;
  81     q->param.mfx.FrameInfo.BitDepthChroma = 8;
  82
  83     if (avctx->framerate.den > 0 && avctx->framerate.num > 0) {
  84         q->param.mfx.FrameInfo.FrameRateExtN = avctx->framerate.num;
  85         q->param.mfx.FrameInfo.FrameRateExtD = avctx->framerate.den;
  86     } else {
  87         q->param.mfx.FrameInfo.FrameRateExtN  = avctx->time_base.den;
  88         q->param.mfx.FrameInfo.FrameRateExtD  = avctx->time_base.num;
  89     }
  90
  91     if (avctx->flags & AV_CODEC_FLAG_QSCALE) {
  92         q->param.mfx.RateControlMethod = MFX_RATECONTROL_CQP;
  93         ratecontrol_desc = "constant quantization parameter (CQP)";
  94     } else if (avctx->rc_max_rate == avctx->bit_rate) {
  95         q->param.mfx.RateControlMethod = MFX_RATECONTROL_CBR;
  96         ratecontrol_desc = "constant bitrate (CBR)";
  97     } else if (!avctx->rc_max_rate) {
  98         q->param.mfx.RateControlMethod = MFX_RATECONTROL_AVBR;
  99         ratecontrol_desc = "average variable bitrate (AVBR)";
 100     } else {
 101         q->param.mfx.RateControlMethod = MFX_RATECONTROL_VBR;
 102         ratecontrol_desc = "variable bitrate (VBR)";
 103     }
 104
 105     av_log(avctx, AV_LOG_VERBOSE, "Using the %s ratecontrol method\n", ratecontrol_desc);
 106
 107     switch (q->param.mfx.RateControlMethod) {
 108     case MFX_RATECONTROL_CBR:
 109     case MFX_RATECONTROL_VBR:
 110         q->param.mfx.InitialDelayInKB = avctx->rc_initial_buffer_occupancy / 1000;
 111         q->param.mfx.TargetKbps       = avctx->bit_rate / 1000;
 112         q->param.mfx.MaxKbps          = avctx->bit_rate / 1000;
 113         break;
 114     case MFX_RATECONTROL_CQP:
 115         quant = avctx->global_quality / FF_QP2LAMBDA;
 116
 117         q->param.mfx.QPI = av_clip(quant * fabs(avctx->i_quant_factor) + avctx->i_quant_offset, 0, 51);
 118         q->param.mfx.QPP = av_clip(quant, 0, 51);
 119         q->param.mfx.QPB = av_clip(quant * fabs(avctx->b_quant_factor) + avctx->b_quant_offset, 0, 51);
 120
 121         break;
 122     case MFX_RATECONTROL_AVBR:
 123         q->param.mfx.TargetKbps  = avctx->bit_rate / 1000;
 124         q->param.mfx.Convergence = q->avbr_convergence;
 125         q->param.mfx.Accuracy    = q->avbr_accuracy;
 126         break;
 127     }
 128
 129     // the HEVC encoder plugin currently fails if coding options
 130     // are provided
 131     if (avctx->codec_id != AV_CODEC_ID_HEVC) {
 132         q->extco.Header.BufferId      = MFX_EXTBUFF_CODING_OPTION;
 133         q->extco.Header.BufferSz      = sizeof(q->extco);
 134         q->extco.CAVLC                = avctx->coder_type == FF_CODER_TYPE_VLC ?
 135                                         MFX_CODINGOPTION_ON : MFX_CODINGOPTION_UNKNOWN;
 136
 137         q->extparam[0] = (mfxExtBuffer *)&q->extco;
 138
 139         q->param.ExtParam    = q->extparam;
 140         q->param.NumExtParam = FF_ARRAY_ELEMS(q->extparam);
 141     }
 142
 143     return 0;
 144 }
 145
 146 static int qsv_retrieve_enc_params(AVCodecContext *avctx, QSVEncContext *q)
 147 {
 148     uint8_t sps_buf[128];
 149     uint8_t pps_buf[128];
 150
 151     mfxExtCodingOptionSPSPPS extradata = {
 152         .Header.BufferId = MFX_EXTBUFF_CODING_OPTION_SPSPPS,
 153         .Header.BufferSz = sizeof(extradata),
 154         .SPSBuffer = sps_buf, .SPSBufSize = sizeof(sps_buf),
 155         .PPSBuffer = pps_buf, .PPSBufSize = sizeof(pps_buf)
 156     };
 157
 158     mfxExtBuffer *ext_buffers[] = {
 159         (mfxExtBuffer*)&extradata,
 160     };
 161
 162     int need_pps = avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO;
 163     int ret;
 164
 165     q->param.ExtParam    = ext_buffers;
 166     q->param.NumExtParam = FF_ARRAY_ELEMS(ext_buffers);
 167
 168     ret = MFXVideoENCODE_GetVideoParam(q->session, &q->param);
 169     if (ret < 0)
 170         return ff_qsv_error(ret);
 171
 172     q->packet_size = q->param.mfx.BufferSizeInKB * 1000;
 173
 174     if (!extradata.SPSBufSize || (need_pps && !extradata.PPSBufSize)) {
 175         av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx.\n");
 176         return AVERROR_UNKNOWN;
 177     }
 178
 179     avctx->extradata = av_malloc(extradata.SPSBufSize + need_pps * extradata.PPSBufSize +
 180                                  AV_INPUT_BUFFER_PADDING_SIZE);
 181     if (!avctx->extradata)
 182         return AVERROR(ENOMEM);
 183
 184     memcpy(avctx->extradata,                        sps_buf, extradata.SPSBufSize);
 185     if (need_pps)
 186         memcpy(avctx->extradata + extradata.SPSBufSize, pps_buf, extradata.PPSBufSize);
 187     avctx->extradata_size = extradata.SPSBufSize + need_pps * extradata.PPSBufSize;
 188     memset(avctx->extradata + avctx->extradata_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 189
 190     return 0;
 191 }
 192
 193 int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q)
 194 {
 195     int ret;
 196
 197     q->param.IOPattern  = MFX_IOPATTERN_IN_SYSTEM_MEMORY;
 198     q->param.AsyncDepth = q->async_depth;
 199
 200     q->async_fifo = av_fifo_alloc((1 + q->async_depth) *
 201                                   (sizeof(AVPacket) + sizeof(mfxSyncPoint) + sizeof(mfxBitstream*)));
 202     if (!q->async_fifo)
 203         return AVERROR(ENOMEM);
 204
 205     if (avctx->hwaccel_context) {
 206         AVQSVContext *qsv = avctx->hwaccel_context;
 207
 208         q->session         = qsv->session;
 209         q->param.IOPattern = qsv->iopattern;
 210     }
 211
 212     if (!q->session) {
 213         ret = ff_qsv_init_internal_session(avctx, &q->internal_session,
 214                                            q->load_plugins);
 215         if (ret < 0)
 216             return ret;
 217
 218         q->session = q->internal_session;
 219     }
 220
 221     ret = init_video_param(avctx, q);
 222     if (ret < 0)
 223         return ret;
 224
 225     ret = MFXVideoENCODE_QueryIOSurf(q->session, &q->param, &q->req);
 226     if (ret < 0) {
 227         av_log(avctx, AV_LOG_ERROR, "Error querying the encoding parameters\n");
 228         return ff_qsv_error(ret);
 229     }
 230
 231     ret = MFXVideoENCODE_Init(q->session, &q->param);
 232     if (ret < 0) {
 233         av_log(avctx, AV_LOG_ERROR, "Error initializing the encoder\n");
 234         return ff_qsv_error(ret);
 235     }
 236
 237     ret = qsv_retrieve_enc_params(avctx, q);
 238     if (ret < 0) {
 239         av_log(avctx, AV_LOG_ERROR, "Error retrieving encoding parameters.\n");
 240         return ret;
 241     }
 242
 243     q->avctx = avctx;
 244
 245     return 0;
 246 }
 247
 248 static void clear_unused_frames(QSVEncContext *q)
 249 {
 250     QSVFrame *cur = q->work_frames;
 251     while (cur) {
 252         if (cur->surface && !cur->surface->Data.Locked) {
 253             cur->surface = NULL;
 254             av_frame_unref(cur->frame);
 255         }
 256         cur = cur->next;
 257     }
 258 }
 259
 260 static int get_free_frame(QSVEncContext *q, QSVFrame **f)
 261 {
 262     QSVFrame *frame, **last;
 263
 264     clear_unused_frames(q);
 265
 266     frame = q->work_frames;
 267     last  = &q->work_frames;
 268     while (frame) {
 269         if (!frame->surface) {
 270             *f = frame;
 271             return 0;
 272         }
 273
 274         last  = &frame->next;
 275         frame = frame->next;
 276     }
 277
 278     frame = av_mallocz(sizeof(*frame));
 279     if (!frame)
 280         return AVERROR(ENOMEM);
 281     frame->frame = av_frame_alloc();
 282     if (!frame->frame) {
 283         av_freep(&frame);
 284         return AVERROR(ENOMEM);
 285     }
 286     *last = frame;
 287
 288     *f = frame;
 289
 290     return 0;
 291 }
 292
 293 static int submit_frame(QSVEncContext *q, const AVFrame *frame,
 294                         mfxFrameSurface1 **surface)
 295 {
 296     QSVFrame *qf;
 297     int ret;
 298
 299     ret = get_free_frame(q, &qf);
 300     if (ret < 0)
 301         return ret;
 302
 303     if (frame->format == AV_PIX_FMT_QSV) {
 304         ret = av_frame_ref(qf->frame, frame);
 305         if (ret < 0)
 306             return ret;
 307
 308         qf->surface = (mfxFrameSurface1*)qf->frame->data[3];
 309         *surface = qf->surface;
 310         return 0;
 311     }
 312
 313     /* make a copy if the input is not padded as libmfx requires */
 314     if (frame->height & 31 || frame->linesize[0] & (q->width_align - 1)) {
 315         qf->frame->height = FFALIGN(frame->height, 32);
 316         qf->frame->width  = FFALIGN(frame->width, q->width_align);
 317
 318         ret = ff_get_buffer(q->avctx, qf->frame, AV_GET_BUFFER_FLAG_REF);
 319         if (ret < 0)
 320             return ret;
 321
 322         qf->frame->height = frame->height;
 323         qf->frame->width  = frame->width;
 324         ret = av_frame_copy(qf->frame, frame);
 325         if (ret < 0) {
 326             av_frame_unref(qf->frame);
 327             return ret;
 328         }
 329     } else {
 330         ret = av_frame_ref(qf->frame, frame);
 331         if (ret < 0)
 332             return ret;
 333     }
 334
 335     qf->surface_internal.Info = q->param.mfx.FrameInfo;
 336
 337     qf->surface_internal.Info.PicStruct =
 338         !frame->interlaced_frame ? MFX_PICSTRUCT_PROGRESSIVE :
 339         frame->top_field_first   ? MFX_PICSTRUCT_FIELD_TFF :
 340                                    MFX_PICSTRUCT_FIELD_BFF;
 341     if (frame->repeat_pict == 1)
 342         qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FIELD_REPEATED;
 343     else if (frame->repeat_pict == 2)
 344         qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_DOUBLING;
 345     else if (frame->repeat_pict == 4)
 346         qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_TRIPLING;
 347
 348     qf->surface_internal.Data.PitchLow  = qf->frame->linesize[0];
 349     qf->surface_internal.Data.Y         = qf->frame->data[0];
 350     qf->surface_internal.Data.UV        = qf->frame->data[1];
 351     qf->surface_internal.Data.TimeStamp = av_rescale_q(frame->pts, q->avctx->time_base, (AVRational){1, 90000});
 352
 353     qf->surface = &qf->surface_internal;
 354
 355     *surface = qf->surface;
 356
 357     return 0;
 358 }
 359
 360 static void print_interlace_msg(AVCodecContext *avctx, QSVEncContext *q)
 361 {
 362     if (q->param.mfx.CodecId == MFX_CODEC_AVC) {
 363         if (q->param.mfx.CodecProfile == MFX_PROFILE_AVC_BASELINE ||
 364             q->param.mfx.CodecLevel < MFX_LEVEL_AVC_21 ||
 365             q->param.mfx.CodecLevel > MFX_LEVEL_AVC_41)
 366             av_log(avctx, AV_LOG_WARNING,
 367                    "Interlaced coding is supported"
 368                    " at Main/High Profile Level 2.1-4.1\n");
 369     }
 370 }
 371
 372 int ff_qsv_encode(AVCodecContext *avctx, QSVEncContext *q,
 373                   AVPacket *pkt, const AVFrame *frame, int *got_packet)
 374 {
 375     AVPacket new_pkt = { 0 };
 376     mfxBitstream *bs;
 377
 378     mfxFrameSurface1 *surf = NULL;
 379     mfxSyncPoint sync      = NULL;
 380     int ret;
 381
 382     if (frame) {
 383         ret = submit_frame(q, frame, &surf);
 384         if (ret < 0) {
 385             av_log(avctx, AV_LOG_ERROR, "Error submitting the frame for encoding.\n");
 386             return ret;
 387         }
 388     }
 389
 390     ret = av_new_packet(&new_pkt, q->packet_size);
 391     if (ret < 0) {
 392         av_log(avctx, AV_LOG_ERROR, "Error allocating the output packet\n");
 393         return ret;
 394     }
 395
 396     bs = av_mallocz(sizeof(*bs));
 397     if (!bs) {
 398         av_packet_unref(&new_pkt);
 399         return AVERROR(ENOMEM);
 400     }
 401     bs->Data      = new_pkt.data;
 402     bs->MaxLength = new_pkt.size;
 403
 404     do {
 405         ret = MFXVideoENCODE_EncodeFrameAsync(q->session, NULL, surf, bs, &sync);
 406         if (ret == MFX_WRN_DEVICE_BUSY)
 407             av_usleep(1);
 408     } while (ret > 0);
 409
 410     if (ret < 0) {
 411         av_packet_unref(&new_pkt);
 412         av_freep(&bs);
 413         return (ret == MFX_ERR_MORE_DATA) ? 0 : ff_qsv_error(ret);
 414     }
 415
 416     if (ret == MFX_WRN_INCOMPATIBLE_VIDEO_PARAM && frame->interlaced_frame)
 417         print_interlace_msg(avctx, q);
 418
 419     if (sync) {
 420         av_fifo_generic_write(q->async_fifo, &new_pkt, sizeof(new_pkt), NULL);
 421         av_fifo_generic_write(q->async_fifo, &sync,    sizeof(sync),    NULL);
 422         av_fifo_generic_write(q->async_fifo, &bs,      sizeof(bs),    NULL);
 423     } else {
 424         av_packet_unref(&new_pkt);
 425         av_freep(&bs);
 426     }
 427
 428     if (!av_fifo_space(q->async_fifo) ||
 429         (!frame && av_fifo_size(q->async_fifo))) {
 430         av_fifo_generic_read(q->async_fifo, &new_pkt, sizeof(new_pkt), NULL);
 431         av_fifo_generic_read(q->async_fifo, &sync,    sizeof(sync),    NULL);
 432         av_fifo_generic_read(q->async_fifo, &bs,      sizeof(bs),      NULL);
 433
 434         MFXVideoCORE_SyncOperation(q->session, sync, 60000);
 435
 436         new_pkt.dts  = av_rescale_q(bs->DecodeTimeStamp, (AVRational){1, 90000}, avctx->time_base);
 437         new_pkt.pts  = av_rescale_q(bs->TimeStamp,       (AVRational){1, 90000}, avctx->time_base);
 438         new_pkt.size = bs->DataLength;
 439
 440         if (bs->FrameType & MFX_FRAMETYPE_IDR ||
 441             bs->FrameType & MFX_FRAMETYPE_xIDR)
 442             new_pkt.flags |= AV_PKT_FLAG_KEY;
 443
 444 #if FF_API_CODED_FRAME
 445 FF_DISABLE_DEPRECATION_WARNINGS
 446         if (bs->FrameType & MFX_FRAMETYPE_I || bs->FrameType & MFX_FRAMETYPE_xI)
 447             avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
 448         else if (bs->FrameType & MFX_FRAMETYPE_P || bs->FrameType & MFX_FRAMETYPE_xP)
 449             avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
 450         else if (bs->FrameType & MFX_FRAMETYPE_B || bs->FrameType & MFX_FRAMETYPE_xB)
 451             avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
 452 FF_ENABLE_DEPRECATION_WARNINGS
 453 #endif
 454
 455         av_freep(&bs);
 456
 457         if (pkt->data) {
 458             if (pkt->size < new_pkt.size) {
 459                 av_log(avctx, AV_LOG_ERROR, "Submitted buffer not large enough: %d < %d\n",
 460                        pkt->size, new_pkt.size);
 461                 av_packet_unref(&new_pkt);
 462                 return AVERROR(EINVAL);
 463             }
 464
 465             memcpy(pkt->data, new_pkt.data, new_pkt.size);
 466             pkt->size = new_pkt.size;
 467
 468             ret = av_packet_copy_props(pkt, &new_pkt);
 469             av_packet_unref(&new_pkt);
 470             if (ret < 0)
 471                 return ret;
 472         } else
 473             *pkt = new_pkt;
 474
 475         *got_packet = 1;
 476     }
 477
 478     return 0;
 479 }
 480
 481 int ff_qsv_enc_close(AVCodecContext *avctx, QSVEncContext *q)
 482 {
 483     QSVFrame *cur;
 484
 485     MFXVideoENCODE_Close(q->session);
 486     if (q->internal_session)
 487         MFXClose(q->internal_session);
 488     q->session          = NULL;
 489     q->internal_session = NULL;
 490
 491     cur = q->work_frames;
 492     while (cur) {
 493         q->work_frames = cur->next;
 494         av_frame_free(&cur->frame);
 495         av_freep(&cur);
 496         cur = q->work_frames;
 497     }
 498
 499     while (q->async_fifo && av_fifo_size(q->async_fifo)) {
 500         AVPacket pkt;
 501         mfxSyncPoint sync;
 502         mfxBitstream *bs;
 503
 504         av_fifo_generic_read(q->async_fifo, &pkt,  sizeof(pkt),  NULL);
 505         av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
 506         av_fifo_generic_read(q->async_fifo, &bs,   sizeof(bs),   NULL);
 507
 508         av_freep(&bs);
 509         av_packet_unref(&pkt);
 510     }
 511     av_fifo_free(q->async_fifo);
 512     q->async_fifo = NULL;
 513
 514     return 0;
 515 }