libavcodec/qsv.c

   1 /*
   2  * Intel MediaSDK QSV encoder/decoder shared code
   3  *
   4  * This file is part of Libav.
   5  *
   6  * Libav is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * Libav is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with Libav; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include <mfx/mfxvideo.h>
  22 #include <mfx/mfxplugin.h>
  23
  24 #include <stdio.h>
  25 #include <string.h>
  26
  27 #include "libavutil/avstring.h"
  28 #include "libavutil/common.h"
  29 #include "libavutil/error.h"
  30 #include "libavutil/hwcontext.h"
  31 #include "libavutil/hwcontext_qsv.h"
  32 #include "libavutil/imgutils.h"
  33
  34 #include "avcodec.h"
  35 #include "qsv_internal.h"
  36
  37 #if QSV_VERSION_ATLEAST(1, 12)
  38 #include "mfx/mfxvp8.h"
  39 #endif
  40
  41 int ff_qsv_codec_id_to_mfx(enum AVCodecID codec_id)
  42 {
  43     switch (codec_id) {
  44     case AV_CODEC_ID_H264:
  45         return MFX_CODEC_AVC;
  46 #if QSV_VERSION_ATLEAST(1, 8)
  47     case AV_CODEC_ID_HEVC:
  48         return MFX_CODEC_HEVC;
  49 #endif
  50     case AV_CODEC_ID_MPEG1VIDEO:
  51     case AV_CODEC_ID_MPEG2VIDEO:
  52         return MFX_CODEC_MPEG2;
  53     case AV_CODEC_ID_VC1:
  54         return MFX_CODEC_VC1;
  55 #if QSV_VERSION_ATLEAST(1, 12)
  56     case AV_CODEC_ID_VP8:
  57         return MFX_CODEC_VP8;
  58 #endif
  59     default:
  60         break;
  61     }
  62
  63     return AVERROR(ENOSYS);
  64 }
  65
  66 int ff_qsv_profile_to_mfx(enum AVCodecID codec_id, int profile)
  67 {
  68     if (profile == FF_PROFILE_UNKNOWN)
  69         return MFX_PROFILE_UNKNOWN;
  70     switch (codec_id) {
  71     case AV_CODEC_ID_H264:
  72     case AV_CODEC_ID_HEVC:
  73         return profile;
  74     case AV_CODEC_ID_VC1:
  75         return 4 * profile + 1;
  76     case AV_CODEC_ID_MPEG2VIDEO:
  77         return 0x10 * profile;
  78     }
  79     return MFX_PROFILE_UNKNOWN;
  80 }
  81
  82 static const struct {
  83     mfxStatus   mfxerr;
  84     int         averr;
  85     const char *desc;
  86 } qsv_errors[] = {
  87     { MFX_ERR_NONE,                     0,               "success"                              },
  88     { MFX_ERR_UNKNOWN,                  AVERROR_UNKNOWN, "unknown error"                        },
  89     { MFX_ERR_NULL_PTR,                 AVERROR(EINVAL), "NULL pointer"                         },
  90     { MFX_ERR_UNSUPPORTED,              AVERROR(ENOSYS), "unsupported"                          },
  91     { MFX_ERR_MEMORY_ALLOC,             AVERROR(ENOMEM), "failed to allocate memory"            },
  92     { MFX_ERR_NOT_ENOUGH_BUFFER,        AVERROR(ENOMEM), "insufficient input/output buffer"     },
  93     { MFX_ERR_INVALID_HANDLE,           AVERROR(EINVAL), "invalid handle"                       },
  94     { MFX_ERR_LOCK_MEMORY,              AVERROR(EIO),    "failed to lock the memory block"      },
  95     { MFX_ERR_NOT_INITIALIZED,          AVERROR_BUG,     "not initialized"                      },
  96     { MFX_ERR_NOT_FOUND,                AVERROR(ENOSYS), "specified object was not found"       },
  97     /* the following 3 errors should always be handled explicitly, so those "mappings"
  98      * are for completeness only */
  99     { MFX_ERR_MORE_DATA,                AVERROR_UNKNOWN, "expect more data at input"            },
 100     { MFX_ERR_MORE_SURFACE,             AVERROR_UNKNOWN, "expect more surface at output"        },
 101     { MFX_ERR_MORE_BITSTREAM,           AVERROR_UNKNOWN, "expect more bitstream at output"      },
 102     { MFX_ERR_ABORTED,                  AVERROR_UNKNOWN, "operation aborted"                    },
 103     { MFX_ERR_DEVICE_LOST,              AVERROR(EIO),    "device lost"                          },
 104     { MFX_ERR_INCOMPATIBLE_VIDEO_PARAM, AVERROR(EINVAL), "incompatible video parameters"        },
 105     { MFX_ERR_INVALID_VIDEO_PARAM,      AVERROR(EINVAL), "invalid video parameters"             },
 106     { MFX_ERR_UNDEFINED_BEHAVIOR,       AVERROR_BUG,     "undefined behavior"                   },
 107     { MFX_ERR_DEVICE_FAILED,            AVERROR(EIO),    "device failed"                        },
 108     { MFX_ERR_INCOMPATIBLE_AUDIO_PARAM, AVERROR(EINVAL), "incompatible audio parameters"        },
 109     { MFX_ERR_INVALID_AUDIO_PARAM,      AVERROR(EINVAL), "invalid audio parameters"             },
 110
 111     { MFX_WRN_IN_EXECUTION,             0,               "operation in execution"               },
 112     { MFX_WRN_DEVICE_BUSY,              0,               "device busy"                          },
 113     { MFX_WRN_VIDEO_PARAM_CHANGED,      0,               "video parameters changed"             },
 114     { MFX_WRN_PARTIAL_ACCELERATION,     0,               "partial acceleration"                 },
 115     { MFX_WRN_INCOMPATIBLE_VIDEO_PARAM, 0,               "incompatible video parameters"        },
 116     { MFX_WRN_VALUE_NOT_CHANGED,        0,               "value is saturated"                   },
 117     { MFX_WRN_OUT_OF_RANGE,             0,               "value out of range"                   },
 118     { MFX_WRN_FILTER_SKIPPED,           0,               "filter skipped"                       },
 119     { MFX_WRN_INCOMPATIBLE_AUDIO_PARAM, 0,               "incompatible audio parameters"        },
 120 };
 121
 122 int ff_qsv_map_error(mfxStatus mfx_err, const char **desc)
 123 {
 124     int i;
 125     for (i = 0; i < FF_ARRAY_ELEMS(qsv_errors); i++) {
 126         if (qsv_errors[i].mfxerr == mfx_err) {
 127             if (desc)
 128                 *desc = qsv_errors[i].desc;
 129             return qsv_errors[i].averr;
 130         }
 131     }
 132     if (desc)
 133         *desc = "unknown error";
 134     return AVERROR_UNKNOWN;
 135 }
 136
 137 int ff_qsv_print_error(void *log_ctx, mfxStatus err,
 138                        const char *error_string)
 139 {
 140     const char *desc;
 141     int ret;
 142     ret = ff_qsv_map_error(err, &desc);
 143     av_log(log_ctx, AV_LOG_ERROR, "%s: %s (%d)\n", error_string, desc, err);
 144     return ret;
 145 }
 146
 147 int ff_qsv_print_warning(void *log_ctx, mfxStatus err,
 148                          const char *warning_string)
 149 {
 150     const char *desc;
 151     int ret;
 152     ret = ff_qsv_map_error(err, &desc);
 153     av_log(log_ctx, AV_LOG_WARNING, "%s: %s (%d)\n", warning_string, desc, err);
 154     return ret;
 155 }
 156
 157 static enum AVPixelFormat qsv_map_fourcc(uint32_t fourcc)
 158 {
 159     switch (fourcc) {
 160     case MFX_FOURCC_NV12: return AV_PIX_FMT_NV12;
 161     case MFX_FOURCC_P010: return AV_PIX_FMT_P010;
 162     case MFX_FOURCC_P8:   return AV_PIX_FMT_PAL8;
 163     }
 164     return AV_PIX_FMT_NONE;
 165 }
 166
 167 int ff_qsv_map_pixfmt(enum AVPixelFormat format, uint32_t *fourcc)
 168 {
 169     switch (format) {
 170     case AV_PIX_FMT_YUV420P:
 171     case AV_PIX_FMT_YUVJ420P:
 172     case AV_PIX_FMT_NV12:
 173         *fourcc = MFX_FOURCC_NV12;
 174         return AV_PIX_FMT_NV12;
 175     case AV_PIX_FMT_YUV420P10:
 176     case AV_PIX_FMT_P010:
 177         *fourcc = MFX_FOURCC_P010;
 178         return AV_PIX_FMT_P010;
 179     default:
 180         return AVERROR(ENOSYS);
 181     }
 182 }
 183
 184 int ff_qsv_find_surface_idx(QSVFramesContext *ctx, QSVFrame *frame)
 185 {
 186     int i;
 187     for (i = 0; i < ctx->nb_mids; i++) {
 188         QSVMid *mid = &ctx->mids[i];
 189         if (mid->handle == frame->surface.Data.MemId)
 190             return i;
 191     }
 192     return AVERROR_BUG;
 193 }
 194
 195 static int qsv_load_plugins(mfxSession session, const char *load_plugins,
 196                             void *logctx)
 197 {
 198     if (!load_plugins || !*load_plugins)
 199         return 0;
 200
 201     while (*load_plugins) {
 202         mfxPluginUID uid;
 203         mfxStatus ret;
 204         int i, err = 0;
 205
 206         char *plugin = av_get_token(&load_plugins, ":");
 207         if (!plugin)
 208             return AVERROR(ENOMEM);
 209         if (strlen(plugin) != 2 * sizeof(uid.Data)) {
 210             av_log(logctx, AV_LOG_ERROR, "Invalid plugin UID length\n");
 211             err = AVERROR(EINVAL);
 212             goto load_plugin_fail;
 213         }
 214
 215         for (i = 0; i < sizeof(uid.Data); i++) {
 216             err = sscanf(plugin + 2 * i, "%2hhx", uid.Data + i);
 217             if (err != 1) {
 218                 av_log(logctx, AV_LOG_ERROR, "Invalid plugin UID\n");
 219                 err = AVERROR(EINVAL);
 220                 goto load_plugin_fail;
 221             }
 222
 223         }
 224
 225         ret = MFXVideoUSER_Load(session, &uid, 1);
 226         if (ret < 0) {
 227             char errorbuf[128];
 228             snprintf(errorbuf, sizeof(errorbuf),
 229                      "Could not load the requested plugin '%s'", plugin);
 230             err = ff_qsv_print_error(logctx, ret, errorbuf);
 231             goto load_plugin_fail;
 232         }
 233
 234         if (*load_plugins)
 235             load_plugins++;
 236 load_plugin_fail:
 237         av_freep(&plugin);
 238         if (err < 0)
 239             return err;
 240     }
 241
 242     return 0;
 243
 244 }
 245
 246 int ff_qsv_init_internal_session(AVCodecContext *avctx, mfxSession *session,
 247                                  const char *load_plugins)
 248 {
 249     mfxIMPL impl   = MFX_IMPL_AUTO_ANY;
 250     mfxVersion ver = { { QSV_VERSION_MINOR, QSV_VERSION_MAJOR } };
 251
 252     const char *desc;
 253     int ret;
 254
 255     ret = MFXInit(impl, &ver, session);
 256     if (ret < 0)
 257         return ff_qsv_print_error(avctx, ret,
 258                                   "Error initializing an internal MFX session");
 259
 260     ret = qsv_load_plugins(*session, load_plugins, avctx);
 261     if (ret < 0) {
 262         av_log(avctx, AV_LOG_ERROR, "Error loading plugins\n");
 263         return ret;
 264     }
 265
 266     MFXQueryIMPL(*session, &impl);
 267
 268     switch (MFX_IMPL_BASETYPE(impl)) {
 269     case MFX_IMPL_SOFTWARE:
 270         desc = "software";
 271         break;
 272     case MFX_IMPL_HARDWARE:
 273     case MFX_IMPL_HARDWARE2:
 274     case MFX_IMPL_HARDWARE3:
 275     case MFX_IMPL_HARDWARE4:
 276         desc = "hardware accelerated";
 277         break;
 278     default:
 279         desc = "unknown";
 280     }
 281
 282     av_log(avctx, AV_LOG_VERBOSE,
 283            "Initialized an internal MFX session using %s implementation\n",
 284            desc);
 285
 286     return 0;
 287 }
 288
 289 static void mids_buf_free(void *opaque, uint8_t *data)
 290 {
 291     AVBufferRef *hw_frames_ref = opaque;
 292     av_buffer_unref(&hw_frames_ref);
 293     av_freep(&data);
 294 }
 295
 296 static AVBufferRef *qsv_create_mids(AVBufferRef *hw_frames_ref)
 297 {
 298     AVHWFramesContext    *frames_ctx = (AVHWFramesContext*)hw_frames_ref->data;
 299     AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 300     int                  nb_surfaces = frames_hwctx->nb_surfaces;
 301
 302     AVBufferRef *mids_buf, *hw_frames_ref1;
 303     QSVMid *mids;
 304     int i;
 305
 306     hw_frames_ref1 = av_buffer_ref(hw_frames_ref);
 307     if (!hw_frames_ref1)
 308         return NULL;
 309
 310     mids = av_mallocz_array(nb_surfaces, sizeof(*mids));
 311     if (!mids) {
 312         av_buffer_unref(&hw_frames_ref1);
 313         return NULL;
 314     }
 315
 316     mids_buf = av_buffer_create((uint8_t*)mids, nb_surfaces * sizeof(*mids),
 317                                 mids_buf_free, hw_frames_ref1, 0);
 318     if (!mids_buf) {
 319         av_buffer_unref(&hw_frames_ref1);
 320         av_freep(&mids);
 321         return NULL;
 322     }
 323
 324     for (i = 0; i < nb_surfaces; i++) {
 325         QSVMid *mid = &mids[i];
 326         mid->handle        = frames_hwctx->surfaces[i].Data.MemId;
 327         mid->hw_frames_ref = hw_frames_ref1;
 328     }
 329
 330     return mids_buf;
 331 }
 332
 333 static int qsv_setup_mids(mfxFrameAllocResponse *resp, AVBufferRef *hw_frames_ref,
 334                           AVBufferRef *mids_buf)
 335 {
 336     AVHWFramesContext    *frames_ctx = (AVHWFramesContext*)hw_frames_ref->data;
 337     AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 338     QSVMid                     *mids = (QSVMid*)mids_buf->data;
 339     int                  nb_surfaces = frames_hwctx->nb_surfaces;
 340     int i;
 341
 342     // the allocated size of the array is two larger than the number of
 343     // surfaces, we store the references to the frames context and the
 344     // QSVMid array there
 345     resp->mids = av_mallocz_array(nb_surfaces + 2, sizeof(*resp->mids));
 346     if (!resp->mids)
 347         return AVERROR(ENOMEM);
 348
 349     for (i = 0; i < nb_surfaces; i++)
 350         resp->mids[i] = &mids[i];
 351     resp->NumFrameActual = nb_surfaces;
 352
 353     resp->mids[resp->NumFrameActual] = (mfxMemId)av_buffer_ref(hw_frames_ref);
 354     if (!resp->mids[resp->NumFrameActual]) {
 355         av_freep(&resp->mids);
 356         return AVERROR(ENOMEM);
 357     }
 358
 359     resp->mids[resp->NumFrameActual + 1] = av_buffer_ref(mids_buf);
 360     if (!resp->mids[resp->NumFrameActual + 1]) {
 361         av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual]);
 362         av_freep(&resp->mids);
 363         return AVERROR(ENOMEM);
 364     }
 365
 366     return 0;
 367 }
 368
 369 static mfxStatus qsv_frame_alloc(mfxHDL pthis, mfxFrameAllocRequest *req,
 370                                  mfxFrameAllocResponse *resp)
 371 {
 372     QSVFramesContext *ctx = pthis;
 373     int ret;
 374
 375     /* this should only be called from an encoder or decoder and
 376      * only allocates video memory frames */
 377     if (!(req->Type & (MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET |
 378                        MFX_MEMTYPE_VIDEO_MEMORY_PROCESSOR_TARGET))         ||
 379         !(req->Type & (MFX_MEMTYPE_FROM_DECODE | MFX_MEMTYPE_FROM_ENCODE)))
 380         return MFX_ERR_UNSUPPORTED;
 381
 382     if (req->Type & MFX_MEMTYPE_EXTERNAL_FRAME) {
 383         /* external frames -- fill from the caller-supplied frames context */
 384         AVHWFramesContext *frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
 385         AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 386         mfxFrameInfo      *i  = &req->Info;
 387         mfxFrameInfo      *i1 = &frames_hwctx->surfaces[0].Info;
 388
 389         if (i->Width  != i1->Width  || i->Height != i1->Height ||
 390             i->FourCC != i1->FourCC || i->ChromaFormat != i1->ChromaFormat) {
 391             av_log(ctx->logctx, AV_LOG_ERROR, "Mismatching surface properties in an "
 392                    "allocation request: %dx%d %d %d vs %dx%d %d %d\n",
 393                    i->Width,  i->Height,  i->FourCC,  i->ChromaFormat,
 394                    i1->Width, i1->Height, i1->FourCC, i1->ChromaFormat);
 395             return MFX_ERR_UNSUPPORTED;
 396         }
 397
 398         ret = qsv_setup_mids(resp, ctx->hw_frames_ctx, ctx->mids_buf);
 399         if (ret < 0) {
 400             av_log(ctx->logctx, AV_LOG_ERROR,
 401                    "Error filling an external frame allocation request\n");
 402             return MFX_ERR_MEMORY_ALLOC;
 403         }
 404     } else if (req->Type & MFX_MEMTYPE_INTERNAL_FRAME) {
 405         /* internal frames -- allocate a new hw frames context */
 406         AVHWFramesContext *ext_frames_ctx = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
 407         mfxFrameInfo      *i  = &req->Info;
 408
 409         AVBufferRef *frames_ref, *mids_buf;
 410         AVHWFramesContext *frames_ctx;
 411         AVQSVFramesContext *frames_hwctx;
 412
 413         frames_ref = av_hwframe_ctx_alloc(ext_frames_ctx->device_ref);
 414         if (!frames_ref)
 415             return MFX_ERR_MEMORY_ALLOC;
 416
 417         frames_ctx   = (AVHWFramesContext*)frames_ref->data;
 418         frames_hwctx = frames_ctx->hwctx;
 419
 420         frames_ctx->format            = AV_PIX_FMT_QSV;
 421         frames_ctx->sw_format         = qsv_map_fourcc(i->FourCC);
 422         frames_ctx->width             = i->Width;
 423         frames_ctx->height            = i->Height;
 424         frames_ctx->initial_pool_size = req->NumFrameSuggested;
 425
 426         frames_hwctx->frame_type      = req->Type;
 427
 428         ret = av_hwframe_ctx_init(frames_ref);
 429         if (ret < 0) {
 430             av_log(ctx->logctx, AV_LOG_ERROR,
 431                    "Error initializing a frames context for an internal frame "
 432                    "allocation request\n");
 433             av_buffer_unref(&frames_ref);
 434             return MFX_ERR_MEMORY_ALLOC;
 435         }
 436
 437         mids_buf = qsv_create_mids(frames_ref);
 438         if (!mids_buf) {
 439             av_buffer_unref(&frames_ref);
 440             return MFX_ERR_MEMORY_ALLOC;
 441         }
 442
 443         ret = qsv_setup_mids(resp, frames_ref, mids_buf);
 444         av_buffer_unref(&mids_buf);
 445         av_buffer_unref(&frames_ref);
 446         if (ret < 0) {
 447             av_log(ctx->logctx, AV_LOG_ERROR,
 448                    "Error filling an internal frame allocation request\n");
 449             return MFX_ERR_MEMORY_ALLOC;
 450         }
 451     } else {
 452         return MFX_ERR_UNSUPPORTED;
 453     }
 454
 455     return MFX_ERR_NONE;
 456 }
 457
 458 static mfxStatus qsv_frame_free(mfxHDL pthis, mfxFrameAllocResponse *resp)
 459 {
 460     av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual]);
 461     av_buffer_unref((AVBufferRef**)&resp->mids[resp->NumFrameActual + 1]);
 462     av_freep(&resp->mids);
 463     return MFX_ERR_NONE;
 464 }
 465
 466 static mfxStatus qsv_frame_lock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
 467 {
 468     QSVMid *qsv_mid = mid;
 469     AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)qsv_mid->hw_frames_ref->data;
 470     AVQSVFramesContext *hw_frames_hwctx = hw_frames_ctx->hwctx;
 471     int ret;
 472
 473     if (qsv_mid->locked_frame)
 474         return MFX_ERR_UNDEFINED_BEHAVIOR;
 475
 476     /* Allocate a system memory frame that will hold the mapped data. */
 477     qsv_mid->locked_frame = av_frame_alloc();
 478     if (!qsv_mid->locked_frame)
 479         return MFX_ERR_MEMORY_ALLOC;
 480     qsv_mid->locked_frame->format  = hw_frames_ctx->sw_format;
 481
 482     /* wrap the provided handle in a hwaccel AVFrame */
 483     qsv_mid->hw_frame = av_frame_alloc();
 484     if (!qsv_mid->hw_frame)
 485         goto fail;
 486
 487     qsv_mid->hw_frame->data[3] = (uint8_t*)&qsv_mid->surf;
 488     qsv_mid->hw_frame->format  = AV_PIX_FMT_QSV;
 489
 490     // doesn't really matter what buffer is used here
 491     qsv_mid->hw_frame->buf[0]  = av_buffer_alloc(1);
 492     if (!qsv_mid->hw_frame->buf[0])
 493         goto fail;
 494
 495     qsv_mid->hw_frame->width   = hw_frames_ctx->width;
 496     qsv_mid->hw_frame->height  = hw_frames_ctx->height;
 497
 498     qsv_mid->hw_frame->hw_frames_ctx = av_buffer_ref(qsv_mid->hw_frames_ref);
 499     if (!qsv_mid->hw_frame->hw_frames_ctx)
 500         goto fail;
 501
 502     qsv_mid->surf.Info = hw_frames_hwctx->surfaces[0].Info;
 503     qsv_mid->surf.Data.MemId = qsv_mid->handle;
 504
 505     /* map the data to the system memory */
 506     ret = av_hwframe_map(qsv_mid->locked_frame, qsv_mid->hw_frame,
 507                          AV_HWFRAME_MAP_DIRECT);
 508     if (ret < 0)
 509         goto fail;
 510
 511     ptr->Pitch = qsv_mid->locked_frame->linesize[0];
 512     ptr->Y     = qsv_mid->locked_frame->data[0];
 513     ptr->U     = qsv_mid->locked_frame->data[1];
 514     ptr->V     = qsv_mid->locked_frame->data[1] + 1;
 515
 516     return MFX_ERR_NONE;
 517 fail:
 518     av_frame_free(&qsv_mid->hw_frame);
 519     av_frame_free(&qsv_mid->locked_frame);
 520     return MFX_ERR_MEMORY_ALLOC;
 521 }
 522
 523 static mfxStatus qsv_frame_unlock(mfxHDL pthis, mfxMemId mid, mfxFrameData *ptr)
 524 {
 525     QSVMid *qsv_mid = mid;
 526
 527     av_frame_free(&qsv_mid->locked_frame);
 528     av_frame_free(&qsv_mid->hw_frame);
 529
 530     return MFX_ERR_NONE;
 531 }
 532
 533 static mfxStatus qsv_frame_get_hdl(mfxHDL pthis, mfxMemId mid, mfxHDL *hdl)
 534 {
 535     QSVMid *qsv_mid = (QSVMid*)mid;
 536     *hdl = qsv_mid->handle;
 537     return MFX_ERR_NONE;
 538 }
 539
 540 int ff_qsv_init_session_device(AVCodecContext *avctx, mfxSession *psession,
 541                                AVBufferRef *device_ref, const char *load_plugins)
 542 {
 543     static const mfxHandleType handle_types[] = {
 544         MFX_HANDLE_VA_DISPLAY,
 545         MFX_HANDLE_D3D9_DEVICE_MANAGER,
 546         MFX_HANDLE_D3D11_DEVICE,
 547     };
 548     AVHWDeviceContext    *device_ctx = (AVHWDeviceContext*)device_ref->data;
 549     AVQSVDeviceContext *device_hwctx = device_ctx->hwctx;
 550     mfxSession        parent_session = device_hwctx->session;
 551
 552     mfxSession    session;
 553     mfxVersion    ver;
 554     mfxIMPL       impl;
 555     mfxHDL        handle = NULL;
 556     mfxHandleType handle_type;
 557     mfxStatus err;
 558
 559     int i, ret;
 560
 561     err = MFXQueryIMPL(parent_session, &impl);
 562     if (err == MFX_ERR_NONE)
 563         err = MFXQueryVersion(parent_session, &ver);
 564     if (err != MFX_ERR_NONE)
 565         return ff_qsv_print_error(avctx, err,
 566                                   "Error querying the session attributes");
 567
 568     for (i = 0; i < FF_ARRAY_ELEMS(handle_types); i++) {
 569         err = MFXVideoCORE_GetHandle(parent_session, handle_types[i], &handle);
 570         if (err == MFX_ERR_NONE) {
 571             handle_type = handle_types[i];
 572             break;
 573         }
 574         handle = NULL;
 575     }
 576     if (!handle) {
 577         av_log(avctx, AV_LOG_VERBOSE, "No supported hw handle could be retrieved "
 578                "from the session\n");
 579     }
 580
 581     err = MFXInit(impl, &ver, &session);
 582     if (err != MFX_ERR_NONE)
 583         return ff_qsv_print_error(avctx, err,
 584                                   "Error initializing a child MFX session");
 585
 586     if (handle) {
 587         err = MFXVideoCORE_SetHandle(session, handle_type, handle);
 588         if (err != MFX_ERR_NONE)
 589             return ff_qsv_print_error(avctx, err,
 590                                       "Error setting a HW handle");
 591     }
 592
 593     ret = qsv_load_plugins(session, load_plugins, avctx);
 594     if (ret < 0) {
 595         av_log(avctx, AV_LOG_ERROR, "Error loading plugins\n");
 596         return ret;
 597     }
 598
 599     *psession = session;
 600     return 0;
 601 }
 602
 603 int ff_qsv_init_session_frames(AVCodecContext *avctx, mfxSession *psession,
 604                                QSVFramesContext *qsv_frames_ctx,
 605                                const char *load_plugins, int opaque)
 606 {
 607     mfxFrameAllocator frame_allocator = {
 608         .pthis  = qsv_frames_ctx,
 609         .Alloc  = qsv_frame_alloc,
 610         .Lock   = qsv_frame_lock,
 611         .Unlock = qsv_frame_unlock,
 612         .GetHDL = qsv_frame_get_hdl,
 613         .Free   = qsv_frame_free,
 614     };
 615
 616     AVHWFramesContext    *frames_ctx = (AVHWFramesContext*)qsv_frames_ctx->hw_frames_ctx->data;
 617     AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
 618
 619     mfxSession    session;
 620     mfxStatus err;
 621
 622     int ret;
 623
 624     ret = ff_qsv_init_session_device(avctx, &session,
 625                                      frames_ctx->device_ref, load_plugins);
 626     if (ret < 0)
 627         return ret;
 628
 629     if (!opaque) {
 630         qsv_frames_ctx->logctx = avctx;
 631
 632         /* allocate the memory ids for the external frames */
 633         av_buffer_unref(&qsv_frames_ctx->mids_buf);
 634         qsv_frames_ctx->mids_buf = qsv_create_mids(qsv_frames_ctx->hw_frames_ctx);
 635         if (!qsv_frames_ctx->mids_buf)
 636             return AVERROR(ENOMEM);
 637         qsv_frames_ctx->mids    = (QSVMid*)qsv_frames_ctx->mids_buf->data;
 638         qsv_frames_ctx->nb_mids = frames_hwctx->nb_surfaces;
 639
 640         err = MFXVideoCORE_SetFrameAllocator(session, &frame_allocator);
 641         if (err != MFX_ERR_NONE)
 642             return ff_qsv_print_error(avctx, err,
 643                                       "Error setting a frame allocator");
 644     }
 645
 646     *psession = session;
 647     return 0;
 648 }