gst/vaapi/gstvaapivideomemory.c

   1 /*
   2  *  gstvaapivideomemory.c - Gstreamer/VA video memory
   3  *
   4  *  Copyright (C) 2013 Intel Corporation
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Lesser General Public License
   8  *  as published by the Free Software Foundation; either version 2.1
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This library 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 this library; if not, write to the Free
  18  *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "gst/vaapi/sysdeps.h"
  23 #include "gstvaapivideomemory.h"
  24
  25 GST_DEBUG_CATEGORY_STATIC(gst_debug_vaapivideomemory);
  26 #define GST_CAT_DEFAULT gst_debug_vaapivideomemory
  27
  28 #ifndef GST_VIDEO_INFO_FORMAT_STRING
  29 #define GST_VIDEO_INFO_FORMAT_STRING(vip) \
  30     gst_video_format_to_string(GST_VIDEO_INFO_FORMAT(vip))
  31 #endif
  32
  33 /* ------------------------------------------------------------------------ */
  34 /* --- GstVaapiVideoMemory                                              --- */
  35 /* ------------------------------------------------------------------------ */
  36
  37 static GstVaapiImage *
  38 new_image(GstVaapiDisplay *display, const GstVideoInfo *vip)
  39 {
  40     GstVaapiImageFormat format;
  41
  42     format = gst_vaapi_image_format_from_video(GST_VIDEO_INFO_FORMAT(vip));
  43     if (!format)
  44         return NULL;
  45
  46     return gst_vaapi_image_new(display, format,
  47         GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
  48 }
  49
  50 static gboolean
  51 ensure_image(GstVaapiVideoMemory *mem)
  52 {
  53     if (!mem->image && mem->use_direct_rendering) {
  54         mem->image = gst_vaapi_surface_derive_image(mem->surface);
  55         if (!mem->image) {
  56             GST_WARNING("failed to derive image, fallbacking to copy");
  57             mem->use_direct_rendering = FALSE;
  58         }
  59     }
  60
  61     if (!mem->image) {
  62         GstVaapiDisplay * const display =
  63             gst_vaapi_video_meta_get_display(mem->meta);
  64
  65         mem->image = new_image(display, mem->image_info);
  66         if (!mem->image)
  67             return FALSE;
  68     }
  69     gst_vaapi_video_meta_set_image(mem->meta, mem->image);
  70     return TRUE;
  71 }
  72
  73 static GstVaapiSurface *
  74 new_surface(GstVaapiDisplay *display, const GstVideoInfo *vip)
  75 {
  76     if (GST_VIDEO_INFO_FORMAT(vip) != GST_VIDEO_FORMAT_NV12)
  77         return NULL;
  78
  79     return gst_vaapi_surface_new(display, GST_VAAPI_CHROMA_TYPE_YUV420,
  80         GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
  81 }
  82
  83 static gboolean
  84 ensure_surface(GstVaapiVideoMemory *mem)
  85 {
  86     if (!mem->surface) {
  87         GstVaapiDisplay * const display =
  88             gst_vaapi_video_meta_get_display(mem->meta);
  89
  90         mem->surface = new_surface(display, mem->surface_info);
  91         if (!mem->surface)
  92             return FALSE;
  93     }
  94     gst_vaapi_video_meta_set_surface(mem->meta, mem->surface);
  95     return TRUE;
  96 }
  97
  98 gboolean
  99 gst_video_meta_map_vaapi_memory(GstVideoMeta *meta, guint plane,
 100     GstMapInfo *info, gpointer *data, gint *stride, GstMapFlags flags)
 101 {
 102     GstVaapiVideoMemory * const mem =
 103         GST_VAAPI_VIDEO_MEMORY_CAST(gst_buffer_get_memory(meta->buffer, 0));
 104
 105     g_return_val_if_fail(mem, FALSE);
 106     g_return_val_if_fail(GST_VAAPI_IS_VIDEO_ALLOCATOR(mem->parent_instance.
 107                              allocator), FALSE);
 108     g_return_val_if_fail(mem->meta, FALSE);
 109
 110     if ((flags & GST_MAP_READWRITE) != GST_MAP_WRITE)
 111         goto error_unsupported_map;
 112
 113     /* Map for writing */
 114     if (++mem->map_count == 1) {
 115         if (!ensure_surface(mem))
 116             goto error_ensure_surface;
 117         if (!ensure_image(mem))
 118             goto error_ensure_image;
 119         if (!gst_vaapi_image_map(mem->image))
 120             goto error_map_image;
 121     }
 122
 123     *data = gst_vaapi_image_get_plane(mem->image, plane);
 124     *stride = gst_vaapi_image_get_pitch(mem->image, plane);
 125     info->flags = flags;
 126     return TRUE;
 127
 128     /* ERRORS */
 129 error_unsupported_map:
 130     {
 131         GST_ERROR("unsupported map flags (0x%x)", flags);
 132         return FALSE;
 133     }
 134 error_ensure_surface:
 135     {
 136         const GstVideoInfo * const vip = mem->surface_info;
 137         GST_ERROR("failed to create %s surface of size %ux%u",
 138                   GST_VIDEO_INFO_FORMAT_STRING(vip),
 139                   GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 140         return FALSE;
 141     }
 142 error_ensure_image:
 143     {
 144         const GstVideoInfo * const vip = mem->image_info;
 145         GST_ERROR("failed to create %s image of size %ux%u",
 146                   GST_VIDEO_INFO_FORMAT_STRING(vip),
 147                   GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 148         return FALSE;
 149     }
 150 error_map_image:
 151     {
 152         GST_ERROR("failed to map image %" GST_VAAPI_ID_FORMAT,
 153                   GST_VAAPI_ID_ARGS(gst_vaapi_image_get_id(mem->image)));
 154         return FALSE;
 155     }
 156 }
 157
 158 gboolean
 159 gst_video_meta_unmap_vaapi_memory(GstVideoMeta *meta, guint plane,
 160     GstMapInfo *info)
 161 {
 162     GstVaapiVideoMemory * const mem =
 163         GST_VAAPI_VIDEO_MEMORY_CAST(gst_buffer_get_memory(meta->buffer, 0));
 164
 165     g_return_val_if_fail(mem, FALSE);
 166     g_return_val_if_fail(GST_VAAPI_IS_VIDEO_ALLOCATOR(mem->parent_instance.
 167                              allocator), FALSE);
 168     g_return_val_if_fail(mem->meta, FALSE);
 169     g_return_val_if_fail(mem->surface, FALSE);
 170     g_return_val_if_fail(mem->image, FALSE);
 171
 172     if (--mem->map_count == 0) {
 173         /* Unmap VA image used for read/writes */
 174         if (info->flags & GST_MAP_READWRITE)
 175             gst_vaapi_image_unmap(mem->image);
 176
 177         /* Commit VA image to surface */
 178         if ((info->flags & GST_MAP_WRITE) && !mem->use_direct_rendering) {
 179             if (!gst_vaapi_surface_put_image(mem->surface, mem->image))
 180                 goto error_upload_image;
 181         }
 182     }
 183     return TRUE;
 184
 185     /* ERRORS */
 186 error_upload_image:
 187     {
 188         GST_ERROR("failed to upload image");
 189         return FALSE;
 190     }
 191 }
 192
 193 GstMemory *
 194 gst_vaapi_video_memory_new(GstAllocator *base_allocator,
 195     GstVaapiVideoMeta *meta)
 196 {
 197     GstVaapiVideoAllocator * const allocator =
 198         GST_VAAPI_VIDEO_ALLOCATOR_CAST(base_allocator);
 199     const GstVideoInfo *vip;
 200     GstVaapiVideoMemory *mem;
 201
 202     mem = g_slice_new(GstVaapiVideoMemory);
 203     if (!mem)
 204         return NULL;
 205
 206     vip = &allocator->image_info;
 207     gst_memory_init(&mem->parent_instance, 0, base_allocator, NULL,
 208         GST_VIDEO_INFO_SIZE(vip), 0, 0, GST_VIDEO_INFO_SIZE(vip));
 209
 210     mem->surface_info = &allocator->surface_info;
 211     mem->surface = NULL;
 212     mem->image_info = &allocator->image_info;
 213     mem->image = NULL;
 214     mem->meta = gst_vaapi_video_meta_ref(meta);
 215     mem->map_count = 0;
 216     mem->use_direct_rendering = allocator->has_direct_rendering;
 217     return GST_MEMORY_CAST(mem);
 218 }
 219
 220 static void
 221 gst_vaapi_video_memory_free(GstVaapiVideoMemory *mem)
 222 {
 223     gst_vaapi_object_replace(&mem->surface, NULL);
 224     gst_vaapi_object_replace(&mem->image, NULL);
 225     gst_vaapi_video_meta_unref(mem->meta);
 226     g_slice_free(GstVaapiVideoMemory, mem);
 227 }
 228
 229 static gpointer
 230 gst_vaapi_video_memory_map(GstVaapiVideoMemory *mem, gsize maxsize, guint flags)
 231 {
 232     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_map() hook");
 233     return NULL;
 234 }
 235
 236 static void
 237 gst_vaapi_video_memory_unmap(GstVaapiVideoMemory *mem)
 238 {
 239     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_unmap() hook");
 240 }
 241
 242 static GstVaapiVideoMemory *
 243 gst_vaapi_video_memory_copy(GstVaapiVideoMemory *mem,
 244     gssize offset, gssize size)
 245 {
 246     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_copy() hook");
 247     return NULL;
 248 }
 249
 250 static GstVaapiVideoMemory *
 251 gst_vaapi_video_memory_share(GstVaapiVideoMemory *mem,
 252     gssize offset, gssize size)
 253 {
 254     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_share() hook");
 255     return NULL;
 256 }
 257
 258 static gboolean
 259 gst_vaapi_video_memory_is_span(GstVaapiVideoMemory *mem1,
 260     GstVaapiVideoMemory *mem2, gsize *offset_ptr)
 261 {
 262     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_is_span() hook");
 263     return FALSE;
 264 }
 265
 266 /* ------------------------------------------------------------------------ */
 267 /* --- GstVaapiVideoAllocator                                           --- */
 268 /* ------------------------------------------------------------------------ */
 269
 270 #define GST_VAAPI_VIDEO_ALLOCATOR_CLASS(klass)  \
 271     (G_TYPE_CHECK_CLASS_CAST((klass),           \
 272         GST_VAAPI_TYPE_VIDEO_ALLOCATOR,         \
 273         GstVaapiVideoAllocatorClass))
 274
 275 #define GST_VAAPI_IS_VIDEO_ALLOCATOR_CLASS(klass) \
 276     (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_VIDEO_ALLOCATOR))
 277
 278 G_DEFINE_TYPE(GstVaapiVideoAllocator,
 279               gst_vaapi_video_allocator,
 280               GST_TYPE_ALLOCATOR)
 281
 282 static GstMemory *
 283 gst_vaapi_video_allocator_alloc(GstAllocator *allocator, gsize size,
 284     GstAllocationParams *params)
 285 {
 286     g_warning("use gst_vaapi_video_memory_new() to allocate from "
 287         "GstVaapiVideoMemory allocator");
 288
 289     return NULL;
 290 }
 291
 292 static void
 293 gst_vaapi_video_allocator_free(GstAllocator *allocator, GstMemory *mem)
 294 {
 295     gst_vaapi_video_memory_free(GST_VAAPI_VIDEO_MEMORY_CAST(mem));
 296 }
 297
 298 static void
 299 gst_vaapi_video_allocator_class_init(GstVaapiVideoAllocatorClass *klass)
 300 {
 301     GstAllocatorClass * const allocator_class = GST_ALLOCATOR_CLASS(klass);
 302
 303     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapivideomemory,
 304         "vaapivideomemory", 0, "VA-API video memory allocator");
 305
 306     allocator_class->alloc      = gst_vaapi_video_allocator_alloc;
 307     allocator_class->free       = gst_vaapi_video_allocator_free;
 308 }
 309
 310 static void
 311 gst_vaapi_video_allocator_init(GstVaapiVideoAllocator *allocator)
 312 {
 313     GstAllocator * const base_allocator = GST_ALLOCATOR_CAST(allocator);
 314
 315     base_allocator->mem_type = GST_VAAPI_VIDEO_MEMORY_NAME;
 316     base_allocator->mem_map = (GstMemoryMapFunction)
 317         gst_vaapi_video_memory_map;
 318     base_allocator->mem_unmap = (GstMemoryUnmapFunction)
 319         gst_vaapi_video_memory_unmap;
 320     base_allocator->mem_copy = (GstMemoryCopyFunction)
 321         gst_vaapi_video_memory_copy;
 322     base_allocator->mem_share = (GstMemoryShareFunction)
 323         gst_vaapi_video_memory_share;
 324     base_allocator->mem_is_span = (GstMemoryIsSpanFunction)
 325         gst_vaapi_video_memory_is_span;
 326 }
 327
 328 static gboolean
 329 gst_video_info_update_from_image(GstVideoInfo *vip, GstVaapiImage *image)
 330 {
 331     const guchar *data;
 332     guint i, num_planes, data_size;
 333
 334     num_planes = gst_vaapi_image_get_plane_count(image);
 335     g_return_val_if_fail(num_planes == GST_VIDEO_INFO_N_PLANES(vip), FALSE);
 336
 337     /* Determine the base data pointer */
 338     data = gst_vaapi_image_get_plane(image, 0);
 339     for (i = 1; i < num_planes; i++) {
 340         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 341         if (data > plane)
 342             data = plane;
 343     }
 344     data_size = gst_vaapi_image_get_data_size(image);
 345
 346     /* Check that we don't have disjoint planes */
 347     for (i = 0; i < num_planes; i++) {
 348         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 349         if (plane - data > data_size)
 350             return FALSE;
 351     }
 352
 353     /* Update GstVideoInfo structure */
 354     for (i = 0; i < num_planes; i++) {
 355         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 356         GST_VIDEO_INFO_PLANE_OFFSET(vip, i) = plane - data;
 357         GST_VIDEO_INFO_PLANE_STRIDE(vip, i) =
 358             gst_vaapi_image_get_pitch(image, i);
 359     }
 360     GST_VIDEO_INFO_SIZE(vip) = data_size;
 361     return TRUE;
 362 }
 363
 364 GstAllocator *
 365 gst_vaapi_video_allocator_new(GstVaapiDisplay *display, GstCaps *caps)
 366 {
 367     GstVaapiVideoAllocator *allocator;
 368     GstVideoInfo *vip;
 369     GstVaapiSurface *surface;
 370     GstVaapiImage *image;
 371
 372     g_return_val_if_fail(display != NULL, NULL);
 373     g_return_val_if_fail(GST_IS_CAPS(caps), NULL);
 374
 375     allocator = g_object_new(GST_VAAPI_TYPE_VIDEO_ALLOCATOR, NULL);
 376     if (!allocator)
 377         return NULL;
 378
 379     vip = &allocator->video_info;
 380     gst_video_info_init(vip);
 381     gst_video_info_from_caps(vip, caps);
 382
 383     gst_video_info_set_format(&allocator->surface_info, GST_VIDEO_FORMAT_NV12,
 384         GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 385
 386     if (GST_VIDEO_INFO_FORMAT(vip) != GST_VIDEO_FORMAT_ENCODED) {
 387         image = NULL;
 388         do {
 389             surface = new_surface(display, vip);
 390             if (!surface)
 391                 break;
 392             image = gst_vaapi_surface_derive_image(surface);
 393             if (!image)
 394                 break;
 395             if (!gst_vaapi_image_map(image))
 396                 break;
 397             allocator->has_direct_rendering = gst_video_info_update_from_image(
 398                 &allocator->surface_info, image);
 399             gst_vaapi_image_unmap(image);
 400             GST_INFO("has direct-rendering for %s surfaces: %s",
 401                      GST_VIDEO_INFO_FORMAT_STRING(&allocator->surface_info),
 402                      allocator->has_direct_rendering ? "yes" : "no");
 403         } while (0);
 404         if (surface)
 405             gst_vaapi_object_unref(surface);
 406         if (image)
 407             gst_vaapi_object_unref(image);
 408     }
 409
 410     allocator->image_info = *vip;
 411     if (GST_VIDEO_INFO_FORMAT(vip) == GST_VIDEO_FORMAT_ENCODED)
 412         gst_video_info_set_format(&allocator->image_info, GST_VIDEO_FORMAT_NV12,
 413             GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 414
 415     if (allocator->has_direct_rendering)
 416         allocator->image_info = allocator->surface_info;
 417     else {
 418         do {
 419             image = new_image(display, &allocator->image_info);
 420             if (!image)
 421                 break;
 422             if (!gst_vaapi_image_map(image))
 423                 break;
 424             gst_video_info_update_from_image(&allocator->image_info, image);
 425             gst_vaapi_image_unmap(image);
 426         } while (0);
 427         gst_vaapi_object_unref(image);
 428     }
 429     return GST_ALLOCATOR_CAST(allocator);
 430 }