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