git.sesse.net Git - ffmpeg/blob - libavutil/hwcontext_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 #if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
  22 #undef _WIN32_WINNT
  23 #define _WIN32_WINNT 0x0600
  24 #endif
  25 #define DXVA2API_USE_BITFIELDS
  26 #define COBJMACROS
  27
  28 #include <d3d9.h>
  29 #include <dxva2api.h>
  30 #include <initguid.h>
  31
  32 #include "avassert.h"
  33 #include "common.h"
  34 #include "hwcontext.h"
  35 #include "hwcontext_dxva2.h"
  36 #include "hwcontext_internal.h"
  37 #include "imgutils.h"
  38 #include "pixdesc.h"
  39 #include "pixfmt.h"
  40
  41 typedef struct DXVA2FramesContext {
  42     IDirect3DSurface9 **surfaces_internal;
  43     int              nb_surfaces_used;
  44
  45     HANDLE  device_handle;
  46     IDirectXVideoAccelerationService *service;
  47
  48     D3DFORMAT format;
  49 } DXVA2FramesContext;
  50
  51 static const struct {
  52     D3DFORMAT d3d_format;
  53     enum AVPixelFormat pix_fmt;
  54 } supported_formats[] = {
  55     { MKTAG('N', 'V', '1', '2'), AV_PIX_FMT_NV12 },
  56     { MKTAG('P', '0', '1', '0'), AV_PIX_FMT_P010 },
  57 };
  58
  59 DEFINE_GUID(video_decoder_service,   0xfc51a551, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
  60 DEFINE_GUID(video_processor_service, 0xfc51a552, 0xd5e7, 0x11d9, 0xaf, 0x55, 0x00, 0x05, 0x4e, 0x43, 0xff, 0x02);
  61
  62 static void dxva2_frames_uninit(AVHWFramesContext *ctx)
  63 {
  64     AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
  65     AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
  66     DXVA2FramesContext *s = ctx->internal->priv;
  67     int i;
  68
  69     if (frames_hwctx->decoder_to_release)
  70         IDirectXVideoDecoder_Release(frames_hwctx->decoder_to_release);
  71
  72     if (s->surfaces_internal) {
  73         for (i = 0; i < frames_hwctx->nb_surfaces; i++) {
  74             if (s->surfaces_internal[i])
  75                 IDirect3DSurface9_Release(s->surfaces_internal[i]);
  76         }
  77     }
  78     av_freep(&s->surfaces_internal);
  79
  80     if (s->service) {
  81         IDirectXVideoAccelerationService_Release(s->service);
  82         s->service = NULL;
  83     }
  84
  85     if (s->device_handle != INVALID_HANDLE_VALUE) {
  86         IDirect3DDeviceManager9_CloseDeviceHandle(device_hwctx->devmgr, s->device_handle);
  87         s->device_handle = INVALID_HANDLE_VALUE;
  88     }
  89 }
  90
  91 static AVBufferRef *dxva2_pool_alloc(void *opaque, int size)
  92 {
  93     AVHWFramesContext      *ctx = (AVHWFramesContext*)opaque;
  94     DXVA2FramesContext       *s = ctx->internal->priv;
  95     AVDXVA2FramesContext *hwctx = ctx->hwctx;
  96
  97     if (s->nb_surfaces_used < hwctx->nb_surfaces) {
  98         s->nb_surfaces_used++;
  99         return av_buffer_create((uint8_t*)s->surfaces_internal[s->nb_surfaces_used - 1],
 100                                 sizeof(*hwctx->surfaces), NULL, 0, 0);
 101     }
 102
 103     return NULL;
 104 }
 105
 106 static int dxva2_init_pool(AVHWFramesContext *ctx)
 107 {
 108     AVDXVA2FramesContext *frames_hwctx = ctx->hwctx;
 109     AVDXVA2DeviceContext *device_hwctx = ctx->device_ctx->hwctx;
 110     DXVA2FramesContext              *s = ctx->internal->priv;
 111     int decode = (frames_hwctx->surface_type == DXVA2_VideoDecoderRenderTarget);
 112
 113     int i;
 114     HRESULT hr;
 115
 116     if (ctx->initial_pool_size <= 0)
 117         return 0;
 118
 119     hr = IDirect3DDeviceManager9_OpenDeviceHandle(device_hwctx->devmgr, &s->device_handle);
 120     if (FAILED(hr)) {
 121         av_log(ctx, AV_LOG_ERROR, "Failed to open device handle\n");
 122         return AVERROR_UNKNOWN;
 123     }
 124
 125     hr = IDirect3DDeviceManager9_GetVideoService(device_hwctx->devmgr,
 126                                                  s->device_handle,
 127                                                  decode ? &video_decoder_service : &video_processor_service,
 128                                                  (void **)&s->service);
 129     if (FAILED(hr)) {
 130         av_log(ctx, AV_LOG_ERROR, "Failed to create the video service\n");
 131         return AVERROR_UNKNOWN;
 132     }
 133
 134     for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
 135         if (ctx->sw_format == supported_formats[i].pix_fmt) {
 136             s->format = supported_formats[i].d3d_format;
 137             break;
 138         }
 139     }
 140     if (i == FF_ARRAY_ELEMS(supported_formats)) {
 141         av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n",
 142                av_get_pix_fmt_name(ctx->sw_format));
 143         return AVERROR(EINVAL);
 144     }
 145
 146     s->surfaces_internal = av_mallocz_array(ctx->initial_pool_size,
 147                                             sizeof(*s->surfaces_internal));
 148     if (!s->surfaces_internal)
 149         return AVERROR(ENOMEM);
 150
 151     hr = IDirectXVideoAccelerationService_CreateSurface(s->service,
 152                                                         ctx->width, ctx->height,
 153                                                         ctx->initial_pool_size - 1,
 154                                                         s->format, D3DPOOL_DEFAULT, 0,
 155                                                         frames_hwctx->surface_type,
 156                                                         s->surfaces_internal, NULL);
 157     if (FAILED(hr)) {
 158         av_log(ctx, AV_LOG_ERROR, "Could not create the surfaces\n");
 159         return AVERROR_UNKNOWN;
 160     }
 161
 162     ctx->internal->pool_internal = av_buffer_pool_init2(sizeof(*s->surfaces_internal),
 163                                                         ctx, dxva2_pool_alloc, NULL);
 164     if (!ctx->internal->pool_internal)
 165         return AVERROR(ENOMEM);
 166
 167     frames_hwctx->surfaces    = s->surfaces_internal;
 168     frames_hwctx->nb_surfaces = ctx->initial_pool_size;
 169
 170     return 0;
 171 }
 172
 173 static int dxva2_frames_init(AVHWFramesContext *ctx)
 174 {
 175     AVDXVA2FramesContext *hwctx = ctx->hwctx;
 176     DXVA2FramesContext       *s = ctx->internal->priv;
 177     int ret;
 178
 179     if (hwctx->surface_type != DXVA2_VideoDecoderRenderTarget &&
 180         hwctx->surface_type != DXVA2_VideoProcessorRenderTarget) {
 181         av_log(ctx, AV_LOG_ERROR, "Unknown surface type: %lu\n",
 182                hwctx->surface_type);
 183         return AVERROR(EINVAL);
 184     }
 185
 186     s->device_handle = INVALID_HANDLE_VALUE;
 187
 188     /* init the frame pool if the caller didn't provide one */
 189     if (!ctx->pool) {
 190         ret = dxva2_init_pool(ctx);
 191         if (ret < 0) {
 192             av_log(ctx, AV_LOG_ERROR, "Error creating an internal frame pool\n");
 193             return ret;
 194         }
 195     }
 196
 197     return 0;
 198 }
 199
 200 static int dxva2_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
 201 {
 202     frame->buf[0] = av_buffer_pool_get(ctx->pool);
 203     if (!frame->buf[0])
 204         return AVERROR(ENOMEM);
 205
 206     frame->data[3] = frame->buf[0]->data;
 207     frame->format  = AV_PIX_FMT_DXVA2_VLD;
 208     frame->width   = ctx->width;
 209     frame->height  = ctx->height;
 210
 211     return 0;
 212 }
 213
 214 static int dxva2_transfer_get_formats(AVHWFramesContext *ctx,
 215                                       enum AVHWFrameTransferDirection dir,
 216                                       enum AVPixelFormat **formats)
 217 {
 218     enum AVPixelFormat *fmts;
 219
 220     fmts = av_malloc_array(2, sizeof(*fmts));
 221     if (!fmts)
 222         return AVERROR(ENOMEM);
 223
 224     fmts[0] = ctx->sw_format;
 225     fmts[1] = AV_PIX_FMT_NONE;
 226
 227     *formats = fmts;
 228
 229     return 0;
 230 }
 231
 232 static int dxva2_transfer_data(AVHWFramesContext *ctx, AVFrame *dst,
 233                                const AVFrame *src)
 234 {
 235     IDirect3DSurface9 *surface;
 236     D3DSURFACE_DESC    surfaceDesc;
 237     D3DLOCKED_RECT     LockedRect;
 238     HRESULT            hr;
 239
 240     int download = !!src->hw_frames_ctx;
 241     int bytes_per_component;
 242
 243     switch (ctx->sw_format) {
 244         case AV_PIX_FMT_NV12:
 245             bytes_per_component = 1;
 246             break;
 247         case AV_PIX_FMT_P010:
 248             bytes_per_component = 2;
 249             break;
 250         default:
 251             av_assert0(0);
 252     }
 253
 254     surface = (IDirect3DSurface9*)(download ? src->data[3] : dst->data[3]);
 255
 256     hr = IDirect3DSurface9_GetDesc(surface, &surfaceDesc);
 257     if (FAILED(hr)) {
 258         av_log(ctx, AV_LOG_ERROR, "Error getting a surface description\n");
 259         return AVERROR_UNKNOWN;
 260     }
 261
 262     hr = IDirect3DSurface9_LockRect(surface, &LockedRect, NULL,
 263                                     download ? D3DLOCK_READONLY : D3DLOCK_DISCARD);
 264     if (FAILED(hr)) {
 265         av_log(ctx, AV_LOG_ERROR, "Unable to lock DXVA2 surface\n");
 266         return AVERROR_UNKNOWN;
 267     }
 268
 269     if (download) {
 270         av_image_copy_plane(dst->data[0], dst->linesize[0],
 271                             (uint8_t*)LockedRect.pBits, LockedRect.Pitch,
 272                             src->width * bytes_per_component, src->height);
 273         av_image_copy_plane(dst->data[1], dst->linesize[1],
 274                             (uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
 275                             LockedRect.Pitch, src->width * bytes_per_component, src->height / 2);
 276     } else {
 277         av_image_copy_plane((uint8_t*)LockedRect.pBits, LockedRect.Pitch,
 278                             dst->data[0], dst->linesize[0],
 279                             src->width * bytes_per_component, src->height);
 280         av_image_copy_plane((uint8_t*)LockedRect.pBits + LockedRect.Pitch * surfaceDesc.Height,
 281                             LockedRect.Pitch, dst->data[1], dst->linesize[1],
 282                             src->width * bytes_per_component, src->height / 2);
 283     }
 284
 285     IDirect3DSurface9_UnlockRect(surface);
 286
 287     return 0;
 288 }
 289
 290 const HWContextType ff_hwcontext_type_dxva2 = {
 291     .type                 = AV_HWDEVICE_TYPE_DXVA2,
 292     .name                 = "DXVA2",
 293
 294     .device_hwctx_size    = sizeof(AVDXVA2DeviceContext),
 295     .frames_hwctx_size    = sizeof(AVDXVA2FramesContext),
 296     .frames_priv_size     = sizeof(DXVA2FramesContext),
 297
 298     .frames_init          = dxva2_frames_init,
 299     .frames_uninit        = dxva2_frames_uninit,
 300     .frames_get_buffer    = dxva2_get_buffer,
 301     .transfer_get_formats = dxva2_transfer_get_formats,
 302     .transfer_data_to     = dxva2_transfer_data,
 303     .transfer_data_from   = dxva2_transfer_data,
 304
 305     .pix_fmts             = (const enum AVPixelFormat[]){ AV_PIX_FMT_DXVA2_VLD, AV_PIX_FMT_NONE },
 306 };