avconv_dxva2.c

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav 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  * Libav 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 Libav; 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 "avconv.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_NoEncrypt,          0x1b81beD0, 0xa0c7,0x11d3,0xb9,0x84,0x00,0xc0,0x4f,0x2e,0x73,0xc5);
  60 DEFINE_GUID(GUID_NULL,                0x00000000, 0x0000,0x0000,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00);
  61
  62 typedef struct dxva2_mode {
  63   const GUID     *guid;
  64   enum AVCodecID codec;
  65 } dxva2_mode;
  66
  67 static const dxva2_mode dxva2_modes[] = {
  68     /* MPEG-2 */
  69     { &DXVA2_ModeMPEG2_VLD,      AV_CODEC_ID_MPEG2VIDEO },
  70     { &DXVA2_ModeMPEG2and1_VLD,  AV_CODEC_ID_MPEG2VIDEO },
  71
  72     /* H.264 */
  73     { &DXVA2_ModeH264_F,         AV_CODEC_ID_H264 },
  74     { &DXVA2_ModeH264_E,         AV_CODEC_ID_H264 },
  75     /* Intel specific H.264 mode */
  76     { &DXVADDI_Intel_ModeH264_E, AV_CODEC_ID_H264 },
  77
  78     /* VC-1 / WMV3 */
  79     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_VC1  },
  80     { &DXVA2_ModeVC1_D2010,      AV_CODEC_ID_WMV3 },
  81     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_VC1  },
  82     { &DXVA2_ModeVC1_D,          AV_CODEC_ID_WMV3 },
  83
  84     /* HEVC/H.265 */
  85     { &DXVA2_ModeHEVC_VLD_Main,  AV_CODEC_ID_HEVC },
  86
  87     { NULL,                      0 },
  88 };
  89
  90 typedef struct DXVA2Context {
  91     IDirectXVideoDecoder        *decoder;
  92
  93     GUID                        decoder_guid;
  94     DXVA2_ConfigPictureDecode   decoder_config;
  95     IDirectXVideoDecoderService *decoder_service;
  96
  97     AVFrame                     *tmp_frame;
  98
  99     AVBufferRef                 *hw_device_ctx;
 100     AVBufferRef                 *hw_frames_ctx;
 101 } DXVA2Context;
 102
 103 static void dxva2_uninit(AVCodecContext *s)
 104 {
 105     InputStream  *ist = s->opaque;
 106     DXVA2Context *ctx = ist->hwaccel_ctx;
 107
 108     ist->hwaccel_uninit        = NULL;
 109     ist->hwaccel_get_buffer    = NULL;
 110     ist->hwaccel_retrieve_data = NULL;
 111
 112     if (ctx->decoder_service)
 113         IDirectXVideoDecoderService_Release(ctx->decoder_service);
 114
 115     av_buffer_unref(&ctx->hw_frames_ctx);
 116     av_buffer_unref(&ctx->hw_device_ctx);
 117
 118     av_frame_free(&ctx->tmp_frame);
 119
 120     av_freep(&ist->hwaccel_ctx);
 121     av_freep(&s->hwaccel_context);
 122 }
 123
 124 static int dxva2_get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
 125 {
 126     InputStream  *ist = s->opaque;
 127     DXVA2Context *ctx = ist->hwaccel_ctx;
 128
 129     return av_hwframe_get_buffer(ctx->hw_frames_ctx, frame, 0);
 130 }
 131
 132 static int dxva2_retrieve_data(AVCodecContext *s, AVFrame *frame)
 133 {
 134     InputStream        *ist = s->opaque;
 135     DXVA2Context       *ctx = ist->hwaccel_ctx;
 136     int                ret;
 137
 138     ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
 139     if (ret < 0)
 140         return ret;
 141
 142     ret = av_frame_copy_props(ctx->tmp_frame, frame);
 143     if (ret < 0) {
 144         av_frame_unref(ctx->tmp_frame);
 145         return ret;
 146     }
 147
 148     av_frame_unref(frame);
 149     av_frame_move_ref(frame, ctx->tmp_frame);
 150
 151     return 0;
 152 }
 153
 154 static int dxva2_alloc(AVCodecContext *s)
 155 {
 156     InputStream  *ist = s->opaque;
 157     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 158     DXVA2Context *ctx;
 159     HANDLE device_handle;
 160     HRESULT hr;
 161
 162     AVHWDeviceContext    *device_ctx;
 163     AVDXVA2DeviceContext *device_hwctx;
 164     int ret;
 165
 166     ctx = av_mallocz(sizeof(*ctx));
 167     if (!ctx)
 168         return AVERROR(ENOMEM);
 169
 170     ist->hwaccel_ctx           = ctx;
 171     ist->hwaccel_uninit        = dxva2_uninit;
 172     ist->hwaccel_get_buffer    = dxva2_get_buffer;
 173     ist->hwaccel_retrieve_data = dxva2_retrieve_data;
 174
 175     ret = av_hwdevice_ctx_create(&ctx->hw_device_ctx, AV_HWDEVICE_TYPE_DXVA2,
 176                                  ist->hwaccel_device, NULL, 0);
 177     if (ret < 0)
 178         goto fail;
 179     device_ctx   = (AVHWDeviceContext*)ctx->hw_device_ctx->data;
 180     device_hwctx = device_ctx->hwctx;
 181
 182     hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr,
 183                                                   &device_handle);
 184     if (FAILED(hr)) {
 185         av_log(NULL, loglevel, "Failed to open a device handle\n");
 186         goto fail;
 187     }
 188
 189     hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr, device_handle,
 190                                                  &IID_IDirectXVideoDecoderService,
 191                                                  (void **)&ctx->decoder_service);
 192     IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, device_handle);
 193     if (FAILED(hr)) {
 194         av_log(NULL, loglevel, "Failed to create IDirectXVideoDecoderService\n");
 195         goto fail;
 196     }
 197
 198     ctx->tmp_frame = av_frame_alloc();
 199     if (!ctx->tmp_frame)
 200         goto fail;
 201
 202     s->hwaccel_context = av_mallocz(sizeof(struct dxva_context));
 203     if (!s->hwaccel_context)
 204         goto fail;
 205
 206     return 0;
 207 fail:
 208     dxva2_uninit(s);
 209     return AVERROR(EINVAL);
 210 }
 211
 212 static int dxva2_get_decoder_configuration(AVCodecContext *s, const GUID *device_guid,
 213                                            const DXVA2_VideoDesc *desc,
 214                                            DXVA2_ConfigPictureDecode *config)
 215 {
 216     InputStream  *ist = s->opaque;
 217     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 218     DXVA2Context *ctx = ist->hwaccel_ctx;
 219     unsigned cfg_count = 0, best_score = 0;
 220     DXVA2_ConfigPictureDecode *cfg_list = NULL;
 221     DXVA2_ConfigPictureDecode best_cfg = {{0}};
 222     HRESULT hr;
 223     int i;
 224
 225     hr = IDirectXVideoDecoderService_GetDecoderConfigurations(ctx->decoder_service, device_guid, desc, NULL, &cfg_count, &cfg_list);
 226     if (FAILED(hr)) {
 227         av_log(NULL, loglevel, "Unable to retrieve decoder configurations\n");
 228         return AVERROR(EINVAL);
 229     }
 230
 231     for (i = 0; i < cfg_count; i++) {
 232         DXVA2_ConfigPictureDecode *cfg = &cfg_list[i];
 233
 234         unsigned score;
 235         if (cfg->ConfigBitstreamRaw == 1)
 236             score = 1;
 237         else if (s->codec_id == AV_CODEC_ID_H264 && cfg->ConfigBitstreamRaw == 2)
 238             score = 2;
 239         else
 240             continue;
 241         if (IsEqualGUID(&cfg->guidConfigBitstreamEncryption, &DXVA2_NoEncrypt))
 242             score += 16;
 243         if (score > best_score) {
 244             best_score = score;
 245             best_cfg   = *cfg;
 246         }
 247     }
 248     CoTaskMemFree(cfg_list);
 249
 250     if (!best_score) {
 251         av_log(NULL, loglevel, "No valid decoder configuration available\n");
 252         return AVERROR(EINVAL);
 253     }
 254
 255     *config = best_cfg;
 256     return 0;
 257 }
 258
 259 static int dxva2_create_decoder(AVCodecContext *s)
 260 {
 261     InputStream  *ist = s->opaque;
 262     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 263     DXVA2Context *ctx = ist->hwaccel_ctx;
 264     struct dxva_context *dxva_ctx = s->hwaccel_context;
 265     GUID *guid_list = NULL;
 266     unsigned guid_count = 0, i, j;
 267     GUID device_guid = GUID_NULL;
 268     D3DFORMAT target_format = 0;
 269     DXVA2_VideoDesc desc = { 0 };
 270     DXVA2_ConfigPictureDecode config;
 271     HRESULT hr;
 272     int surface_alignment, num_surfaces;
 273     int ret;
 274
 275     AVDXVA2FramesContext *frames_hwctx;
 276     AVHWFramesContext *frames_ctx;
 277
 278     hr = IDirectXVideoDecoderService_GetDecoderDeviceGuids(ctx->decoder_service, &guid_count, &guid_list);
 279     if (FAILED(hr)) {
 280         av_log(NULL, loglevel, "Failed to retrieve decoder device GUIDs\n");
 281         goto fail;
 282     }
 283
 284     for (i = 0; dxva2_modes[i].guid; i++) {
 285         D3DFORMAT *target_list = NULL;
 286         unsigned target_count = 0;
 287         const dxva2_mode *mode = &dxva2_modes[i];
 288         if (mode->codec != s->codec_id)
 289             continue;
 290
 291         for (j = 0; j < guid_count; j++) {
 292             if (IsEqualGUID(mode->guid, &guid_list[j]))
 293                 break;
 294         }
 295         if (j == guid_count)
 296             continue;
 297
 298         hr = IDirectXVideoDecoderService_GetDecoderRenderTargets(ctx->decoder_service, mode->guid, &target_count, &target_list);
 299         if (FAILED(hr)) {
 300             continue;
 301         }
 302         for (j = 0; j < target_count; j++) {
 303             const D3DFORMAT format = target_list[j];
 304             if (format == MKTAG('N','V','1','2')) {
 305                 target_format = format;
 306                 break;
 307             }
 308         }
 309         CoTaskMemFree(target_list);
 310         if (target_format) {
 311             device_guid = *mode->guid;
 312             break;
 313         }
 314     }
 315     CoTaskMemFree(guid_list);
 316
 317     if (IsEqualGUID(&device_guid, &GUID_NULL)) {
 318         av_log(NULL, loglevel, "No decoder device for codec found\n");
 319         goto fail;
 320     }
 321
 322     desc.SampleWidth  = s->coded_width;
 323     desc.SampleHeight = s->coded_height;
 324     desc.Format       = target_format;
 325
 326     ret = dxva2_get_decoder_configuration(s, &device_guid, &desc, &config);
 327     if (ret < 0) {
 328         goto fail;
 329     }
 330
 331     /* decoding MPEG-2 requires additional alignment on some Intel GPUs,
 332        but it causes issues for H.264 on certain AMD GPUs..... */
 333     if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO)
 334         surface_alignment = 32;
 335     /* the HEVC DXVA2 spec asks for 128 pixel aligned surfaces to ensure
 336        all coding features have enough room to work with */
 337     else if  (s->codec_id == AV_CODEC_ID_HEVC)
 338         surface_alignment = 128;
 339     else
 340         surface_alignment = 16;
 341
 342     /* 4 base work surfaces */
 343     num_surfaces = 4;
 344
 345     /* add surfaces based on number of possible refs */
 346     if (s->codec_id == AV_CODEC_ID_H264 || s->codec_id == AV_CODEC_ID_HEVC)
 347         num_surfaces += 16;
 348     else
 349         num_surfaces += 2;
 350
 351     /* add extra surfaces for frame threading */
 352     if (s->active_thread_type & FF_THREAD_FRAME)
 353         num_surfaces += s->thread_count;
 354
 355     ctx->hw_frames_ctx = av_hwframe_ctx_alloc(ctx->hw_device_ctx);
 356     if (!ctx->hw_frames_ctx)
 357         goto fail;
 358     frames_ctx   = (AVHWFramesContext*)ctx->hw_frames_ctx->data;
 359     frames_hwctx = frames_ctx->hwctx;
 360
 361     frames_ctx->format            = AV_PIX_FMT_DXVA2_VLD;
 362     frames_ctx->sw_format         = AV_PIX_FMT_NV12;
 363     frames_ctx->width             = FFALIGN(s->coded_width, surface_alignment);
 364     frames_ctx->height            = FFALIGN(s->coded_height, surface_alignment);
 365     frames_ctx->initial_pool_size = num_surfaces;
 366
 367     frames_hwctx->surface_type = DXVA2_VideoDecoderRenderTarget;
 368
 369     ret = av_hwframe_ctx_init(ctx->hw_frames_ctx);
 370     if (ret < 0) {
 371         av_log(NULL, loglevel, "Failed to initialize the HW frames context\n");
 372         goto fail;
 373     }
 374
 375     hr = IDirectXVideoDecoderService_CreateVideoDecoder(ctx->decoder_service, &device_guid,
 376                                                         &desc, &config, frames_hwctx->surfaces,
 377                                                         frames_hwctx->nb_surfaces, &frames_hwctx->decoder_to_release);
 378     if (FAILED(hr)) {
 379         av_log(NULL, loglevel, "Failed to create DXVA2 video decoder\n");
 380         goto fail;
 381     }
 382
 383     ctx->decoder_guid   = device_guid;
 384     ctx->decoder_config = config;
 385
 386     dxva_ctx->cfg           = &ctx->decoder_config;
 387     dxva_ctx->decoder       = frames_hwctx->decoder_to_release;
 388     dxva_ctx->surface       = frames_hwctx->surfaces;
 389     dxva_ctx->surface_count = frames_hwctx->nb_surfaces;
 390
 391     if (IsEqualGUID(&ctx->decoder_guid, &DXVADDI_Intel_ModeH264_E))
 392         dxva_ctx->workaround |= FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO;
 393
 394     return 0;
 395 fail:
 396     av_buffer_unref(&ctx->hw_frames_ctx);
 397     return AVERROR(EINVAL);
 398 }
 399
 400 int dxva2_init(AVCodecContext *s)
 401 {
 402     InputStream *ist = s->opaque;
 403     int loglevel = (ist->hwaccel_id == HWACCEL_AUTO) ? AV_LOG_VERBOSE : AV_LOG_ERROR;
 404     DXVA2Context *ctx;
 405     int ret;
 406
 407     if (!ist->hwaccel_ctx) {
 408         ret = dxva2_alloc(s);
 409         if (ret < 0)
 410             return ret;
 411     }
 412     ctx = ist->hwaccel_ctx;
 413
 414     if (s->codec_id == AV_CODEC_ID_H264 &&
 415         (s->profile & ~FF_PROFILE_H264_CONSTRAINED) > FF_PROFILE_H264_HIGH) {
 416         av_log(NULL, loglevel, "Unsupported H.264 profile for DXVA2 HWAccel: %d\n", s->profile);
 417         return AVERROR(EINVAL);
 418     }
 419
 420     av_buffer_unref(&ctx->hw_frames_ctx);
 421
 422     ret = dxva2_create_decoder(s);
 423     if (ret < 0) {
 424         av_log(NULL, loglevel, "Error creating the DXVA2 decoder\n");
 425         return ret;
 426     }
 427
 428     return 0;
 429 }