ffmpeg_dxva2.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <windows.h>
  20
  21 #ifdef _WIN32_WINNT
  22 #undef _WIN32_WINNT
  23 #endif
  24 #define _WIN32_WINNT 0x0600
  25 #define DXVA2API_USE_BITFIELDS
  26 #define COBJMACROS
  27
  28 #include <stdint.h>
  29
  30 #include <d3d9.h>
  31 #include <dxva2api.h>
  32
  33 #include "ffmpeg.h"
  34
  35 #include "libavcodec/dxva2.h"
  36
  37 #include "libavutil/avassert.h"
  38 #include "libavutil/buffer.h"
  39 #include "libavutil/frame.h"
  40 #include "libavutil/imgutils.h"
  41 #include "libavutil/pixfmt.h"
  42
  43 #include "libavutil/hwcontext.h"
  44 #include "libavutil/hwcontext_dxva2.h"
  45
  46 /* define all the GUIDs used directly here,
  47    to avoid problems with inconsistent dxva2api.h versions in mingw-w64 and different MSVC version */
  48 #include <initguid.h>
  49 DEFINE_GUID(IID_IDirectXVideoDecoderService, 0xfc51a551,0xd5e7,0x11d9,0xaf,0x55,0x00,0x05,0x4e,0x43,0xff,0x02);
  50
  51 DEFINE_GUID(DXVA2_ModeMPEG2_VLD,      0xee27417f, 0x5e28,0x4e65,0xbe,0xea,0x1d,0x26,0xb5,0x08,0xad,0xc9);
  52 DEFINE_GUID(DXVA2_ModeMPEG2and1_VLD,  0x86695f12, 0x340e,0x4f04,0x9f,0xd3,0x92,0x53,0xdd,0x32,0x74,0x60);
  53 DEFINE_GUID(DXVA2_ModeH264_E,         0x1b81be68, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  54 DEFINE_GUID(DXVA2_ModeH264_F,         0x1b81be69, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  55 DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68, 0x4951,0x4C54,0x88,0xFE,0xAB,0xD2,0x5C,0x15,0xB3,0xD6);
  56 DEFINE_GUID(DXVA2_ModeVC1_D,          0x1b81beA3, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  57 DEFINE_GUID(DXVA2_ModeVC1_D2010,      0x1b81beA4, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  58 DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main,  0x5b11d51b, 0x2f4c,0x4452,0xbc,0xc3,0x09,0xf2,0xa1,0x16,0x0c,0xc0);
  59 DEFINE_GUID(DXVA2_ModeHEVC_VLD_Main10,0x107af0e0, 0xef1a,0x4d19,0xab,0xa8,0x67,0xa1,0x63,0x07,0x3d,0x13);
  60 DEFINE_GUID(DXVA2_ModeVP9_VLD_Profile0, 0x463707f8, 0xa1d0,0x4585,0x87,0x6d,0x83,0xaa,0x6d,0x60,0xb8,0x9e);
  61 DEFINE_GUID(DXVA2_NoEncrypt,          0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  62 DEFINE_GUID(GUID_NULL,                0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
  63
  64 typedef struct dxva2_mode {
  65   const GUID     *guid;
  66   enum AVCodecID codec;
  67 } dxva2_mode;
  68
  69 static const dxva2_mode dxva2_modes[] = {
  70     /* MPEG-2 */
  71     { &DXVA2_ModeMPEG2_VLD,      AV_CODEC_ID_MPEG2VIDEO },
  72     { &DXVA2_ModeMPEG2and1_VLD,  AV_CODEC_ID_MPEG2VIDEO },
  73
  74     /* H.264 */
  75     { &DXVA2_ModeH264_F,         AV_CODEC_ID_H264 },
  76     { &DXVA2_ModeH264_E,         AV_CODEC_ID_H264 },
  77     /* Intel specific H.264 mode */
  78     { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
  79
  80     /* VC-1 / WMV3 */
  81     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_VC1  },
  82     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_WMV3 },
  83     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_VC1  },
  84     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_WMV3 },
  85
  86     /* HEVC/H.265 */
  87     { &DXVA2_ModeHEVC_VLD_Main,  AV_CODEC_ID_HEVC },
  88     { &DXVA2_ModeHEVC_VLD_Main10,AV_CODEC_ID_HEVC },
  89
  90     /* VP8/9 */
  91     { &DXVA2_ModeVP9_VLD_Profile0, AV_CODEC_ID_VP9 },
  92
  93     { NULL,                      0 },
  94 };
  95
  96 typedef struct DXVA2Context {
  97     IDirectXVideoDecoder        *decoder;
  98
  99     GUID                        decoder_guid;
 100     DXVA2_ConfigPictureDecode   decoder_config;
 101     IDirectXVideoDecoderService *decoder_service;
 102
 103     AVFrame                     *tmp_frame;
 104
 105     AVBufferRef                 *hw_device_ctx;
 106     AVBufferRef                 *hw_frames_ctx;
 107 } DXVA2Context;
 108
 109 static void dxva2_uninit(AVCodecContext *s)
 110 {
 111     InputStream  *ist = s->opaque;
 112     DXVA2Context *ctx = ist->hwaccel_ctx;
 113
 114     ist->hwaccel_uninit        = NULL;
 115     ist->hwaccel_get_buffer    = NULL;
 116     ist->hwaccel_retrieve_data = NULL;
 117
 118     if (ctx->decoder_service)
 119         IDirectXVideoDecoderService_Release(ctx->decoder_service);
 120
 121     av_buffer_unref(&ctx->hw_frames_ctx);
 122     av_buffer_unref(&ctx->hw_device_ctx);
 123
 124     av_frame_free(&ctx->tmp_frame);
 125
 126     av_freep(&ist->hwaccel_ctx);
 127     av_freep(&s->hwaccel_context);
 128 }
 129
 130 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 131 {
 132     InputStream  *ist = s->opaque;
 133     DXVA2Context *ctx = ist->hwaccel_ctx;
 134
 135     return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
 136 }
 137
 138 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
 139 {
 140     InputStream        *ist = s->opaque;
 141     DXVA2Context       *ctx = ist->hwaccel_ctx;
 142     int                ret;
 143
 144     ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
 145     if (ret < 0)
 146         return ret;
 147
 148     ret = av_frame_copy_props(ctx->tmp_frame, frame);
 149     if (ret < 0) {
 150         av_frame_unref(ctx->tmp_frame);
 151         return ret;
 152     }
 153
 154     av_frame_unref(frame);
 155     av_frame_move_ref(frame, ctx->tmp_frame);
 156
 157     return 0;
 158 }
 159
 160 static int dxva2_alloc(AVCodecContext *s)
 161 {
 162     InputStream  *ist = s->opaque;
 163     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 164     DXVA2Context *ctx;
 165     HANDLE device_handle;
 166     HRESULT hr;
 167
 168     AVHWDeviceContext    *device_ctx;
 169     AVDXVA2DeviceContext *device_hwctx;
 170     int ret;
 171
 172     ctx = av_mallocz(sizeof(*ctx));
 173     if (!ctx)
 174         return AVERROR(ENOMEM);
 175
 176     ist->hwaccel_ctx           = ctx;
 177     ist->hwaccel_uninit        = dxva2_uninit;
 178     ist->hwaccel_get_buffer    = dxva2_get_buffer;
 179     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
 180
 181     ret = av_hwdevice_ctx_create(&ctx->hw_device_ctx, AV_HWDEVICE_TYPE_DXVA2,
 182                                  ist->hwaccel_device, NULL, 0);
 183     if (ret < 0)
 184         goto fail;
 185     device_ctx   = (AVHWDeviceContext*)ctx->hw_device_ctx->data;
 186     device_hwctx = device_ctx->hwctx;
 187
 188     hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr,
 189                                                   &device_handle);
 190     if (FAILED(hr)) {
 191         av_log(NULL, loglevel, "Failed to open a device handle\n");
 192         goto fail;
 193     }
 194
 195     hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr, device_handle,
 196                                                  &IID_IDirectXVideoDecoderService,
 197                                                  (void **)&ctx->decoder_service);
 198     IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, device_handle);
 199     if (FAILED(hr)) {
 200         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
 201         goto fail;
 202     }
 203
 204     ctx->tmp_frame = av_frame_alloc();
 205     if (!ctx->tmp_frame)
 206         goto fail;
 207
 208     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
 209     if (!s->hwaccel_context)
 210         goto fail;
 211
 212     return 0;
 213 fail:
 214     dxva2_uninit(s);
 215     return AVERROR(EINVAL);
 216 }
 217
 218 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
 219                                            const DXVA2_VideoDesc *desc,
 220                                            DXVA2_ConfigPictureDecode *config)
 221 {
 222     InputStream  *ist = s->opaque;
 223     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 224     DXVA2Context *ctx = ist->hwaccel_ctx;
 225     unsigned cfg_count = 0, best_score = 0;
 226     DXVA2_ConfigPictureDecode *cfg_list = NULL;
 227     DXVA2_ConfigPictureDecode best_cfg = {{0}};
 228     HRESULT hr;
 229     int i;
 230
 231     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
 232     if (FAILED(hr)) {
 233         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
 234         return AVERROR(EINVAL);
 235     }
 236
 237     for (i = 0; i < cfg_count; i++) {
 238         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
 239
 240         unsigned score;
 241         if (cfg->ConfigBitstreamRaw == 1)
 242             score = 1;
 243         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
 244             score = 2;
 245         else
 246             continue;
 247         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
 248             score += 16;
 249         if (score > best_score) {
 250             best_score = score;
 251             best_cfg   = *cfg;
 252         }
 253     }
 254     CoTaskMemFree(cfg_list);
 255
 256     if (!best_score) {
 257         av_log(NULL, loglevel, "No valid decoder configuration available\n");
 258         return AVERROR(EINVAL);
 259     }
 260
 261     *config = best_cfg;
 262     return 0;
 263 }
 264
 265 static int dxva2_create_decoder(AVCodecContext *s)
 266 {
 267     InputStream  *ist = s->opaque;
 268     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 269     DXVA2Context *ctx = ist->hwaccel_ctx;
 270     struct dxva_context *dxva_ctx = s->hwaccel_context;
 271     GUID *guid_list = NULL;
 272     unsigned guid_count = 0, i, j;
 273     GUID device_guid = GUID_NULL;
 274     const D3DFORMAT surface_format = (s->sw_pix_fmt == AV_PIX_FMT_YUV420P10) ? MKTAG('P','0','1','0') : MKTAG('N','V','1','2');
 275     D3DFORMAT target_format = 0;
 276     DXVA2_VideoDesc desc = { 0 };
 277     DXVA2_ConfigPictureDecode config;
 278     HRESULT hr;
 279     int surface_alignment, num_surfaces;
 280     int ret;
 281
 282     AVDXVA2FramesContext *frames_hwctx;
 283     AVHWFramesContext *frames_ctx;
 284
 285     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
 286     if (FAILED(hr)) {
 287         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
 288         goto fail;
 289     }
 290
 291     for (i = 0; dxva2_modes[i].guid; i++) {
 292         D3DFORMAT *target_list = NULL;
 293         unsigned target_count = 0;
 294         const dxva2_mode *mode = &dxva2_modes[i];
 295         if (mode->codec != s->codec_id)
 296             continue;
 297
 298         for (j = 0; j < guid_count; j++) {
 299             if (IsEqualGUID(mode->guid, &guid_list[j]))
 300                 break;
 301         }
 302         if (j == guid_count)
 303             continue;
 304
 305         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
 306         if (FAILED(hr)) {
 307             continue;
 308         }
 309         for (j = 0; j < target_count; j++) {
 310             const D3DFORMAT format = target_list[j];
 311             if (format == surface_format) {
 312                 target_format = format;
 313                 break;
 314             }
 315         }
 316         CoTaskMemFree(target_list);
 317         if (target_format) {
 318             device_guid = *mode->guid;
 319             break;
 320         }
 321     }
 322     CoTaskMemFree(guid_list);
 323
 324     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
 325         av_log(NULL, loglevel, "No decoder device for codec found\n");
 326         goto fail;
 327     }
 328
 329     desc.SampleWidth  = s->coded_width;
 330     desc.SampleHeight = s->coded_height;
 331     desc.Format       = target_format;
 332
 333     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
 334     if (ret < 0) {
 335         goto fail;
 336     }
 337
 338     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
 339        but it causes issues for H.264 on certain AMD GPUs..... */
 340     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 341         surface_alignment = 32;
 342     /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
 343        all coding features have enough room to work with */
 344     else if  (s->codec_id == AV_CODEC_ID_HEVC)
 345         surface_alignment = 128;
 346     else
 347         surface_alignment = 16;
 348
 349     /* 4 base work surfaces */
 350     num_surfaces = 4;
 351
 352     /* add surfaces based on number of possible refs */
 353     if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
 354         num_surfaces += 16;
 355     else if (s->codec_id == AV_CODEC_ID_VP9)
 356         num_surfaces += 8;
 357     else
 358         num_surfaces += 2;
 359
 360     /* add extra surfaces for frame threading */
 361     if (s->active_thread_type & FF_THREAD_FRAME)
 362         num_surfaces += s->thread_count;
 363
 364     ctx->hw_frames_ctx = av_hwframe_ctx_alloc(ctx->hw_device_ctx);
 365     if (!ctx->hw_frames_ctx)
 366         goto fail;
 367     frames_ctx   = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
 368     frames_hwctx = frames_ctx->hwctx;
 369
 370     frames_ctx->format            = AV_PIX_FMT_DXVA2_VLD;
 371     frames_ctx->sw_format         = (target_format == MKTAG('P','0','1','0') ? AV_PIX_FMT_P010 : AV_PIX_FMT_NV12);
 372     frames_ctx->width             = FFALIGN(s->coded_width, surface_alignment);
 373     frames_ctx->height            = FFALIGN(s->coded_height, surface_alignment);
 374     frames_ctx->initial_pool_size = num_surfaces;
 375
 376     frames_hwctx->surface_type = DXVA2_VideoDecoderRenderTarget;
 377
 378     ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
 379     if (ret < 0) {
 380         av_log(NULL, loglevel, "Failed to initialize the HW frames context\n");
 381         goto fail;
 382     }
 383
 384     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
 385                                                         &desc, &config, frames_hwctx->surfaces,
 386                                                         frames_hwctx->nb_surfaces, &frames_hwctx->decoder_to_release);
 387     if (FAILED(hr)) {
 388         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
 389         goto fail;
 390     }
 391
 392     ctx->decoder_guid   = device_guid;
 393     ctx->decoder_config = config;
 394
 395     dxva_ctx->cfg           = &ctx->decoder_config;
 396     dxva_ctx->decoder       = frames_hwctx->decoder_to_release;
 397     dxva_ctx->surface       = frames_hwctx->surfaces;
 398     dxva_ctx->surface_count = frames_hwctx->nb_surfaces;
 399
 400     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
 401         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
 402
 403     return 0;
 404 fail:
 405     av_buffer_unref(&ctx->hw_frames_ctx);
 406     return AVERROR(EINVAL);
 407 }
 408
 409 int dxva2_init(AVCodecContext *s)
 410 {
 411     InputStream *ist = s->opaque;
 412     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 413     DXVA2Context *ctx;
 414     int ret;
 415
 416     if (!ist->hwaccel_ctx) {
 417         ret = dxva2_alloc(s);
 418         if (ret < 0)
 419             return ret;
 420     }
 421     ctx = ist->hwaccel_ctx;
 422
 423     if (s->codec_id == AV_CODEC_ID_H264 &&
 424         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
 425         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
 426         return AVERROR(EINVAL);
 427     }
 428
 429     if (s->codec_id == AV_CODEC_ID_HEVC &&
 430         s->profile != FF_PROFILE_HEVC_MAIN && s->profile != FF_PROFILE_HEVC_MAIN_10) {
 431         av_log(NULL, loglevel, "Unsupported HEVC profile for DXVA2 HWAccel: %d\n", s->profile);
 432         return AVERROR(EINVAL);
 433     }
 434
 435     av_buffer_unref(&ctx->hw_frames_ctx);
 436
 437     ret = dxva2_create_decoder(s);
 438     if (ret < 0) {
 439         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
 440         return ret;
 441     }
 442
 443     return 0;
 444 }