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_READ)
 111         goto error_unsupported_map;
 112
 113     if (++mem->map_count == 1) {
 114         if (!ensure_surface(mem))
 115             goto error_ensure_surface;
 116         if (!ensure_image(mem))
 117             goto error_ensure_image;
 118         if (!gst_vaapi_image_map(mem->image))
 119             goto error_map_image;
 120     }
 121
 122     *data = gst_vaapi_image_get_plane(mem->image, plane);
 123     *stride = gst_vaapi_image_get_pitch(mem->image, plane);
 124     info->flags = flags;
 125     return TRUE;
 126
 127     /* ERRORS */
 128 error_unsupported_map:
 129     {
 130         GST_ERROR("unsupported map flags (0x%x)", flags);
 131         return FALSE;
 132     }
 133 error_ensure_surface:
 134     {
 135         const GstVideoInfo * const vip = mem->surface_info;
 136         GST_ERROR("failed to create %s surface of size %ux%u",
 137                   GST_VIDEO_INFO_FORMAT_STRING(vip),
 138                   GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 139         return FALSE;
 140     }
 141 error_ensure_image:
 142     {
 143         const GstVideoInfo * const vip = mem->image_info;
 144         GST_ERROR("failed to create %s image of size %ux%u",
 145                   GST_VIDEO_INFO_FORMAT_STRING(vip),
 146                   GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 147         return FALSE;
 148     }
 149 error_map_image:
 150     {
 151         GST_ERROR("failed to map image %" GST_VAAPI_ID_FORMAT,
 152                   GST_VAAPI_ID_ARGS(gst_vaapi_image_get_id(mem->image)));
 153         return FALSE;
 154     }
 155 }
 156
 157 gboolean
 158 gst_video_meta_unmap_vaapi_memory(GstVideoMeta *meta, guint plane,
 159     GstMapInfo *info)
 160 {
 161     GstVaapiVideoMemory * const mem =
 162         GST_VAAPI_VIDEO_MEMORY_CAST(gst_buffer_get_memory(meta->buffer, 0));
 163
 164     g_return_val_if_fail(mem, FALSE);
 165     g_return_val_if_fail(GST_VAAPI_IS_VIDEO_ALLOCATOR(mem->parent_instance.
 166                              allocator), FALSE);
 167     g_return_val_if_fail(mem->meta, FALSE);
 168     g_return_val_if_fail(mem->surface, FALSE);
 169     g_return_val_if_fail(mem->image, FALSE);
 170
 171     if (--mem->map_count == 0) {
 172         gst_vaapi_image_unmap(mem->image);
 173
 174         /* Commit VA image to surface */
 175         if ((info->flags & GST_MAP_WRITE) && !mem->use_direct_rendering) {
 176             if (!gst_vaapi_surface_put_image(mem->surface, mem->image))
 177                 goto error_upload_image;
 178         }
 179     }
 180     return TRUE;
 181
 182     /* ERRORS */
 183 error_upload_image:
 184     {
 185         GST_ERROR("failed to upload image");
 186         return FALSE;
 187     }
 188 }
 189
 190 GstMemory *
 191 gst_vaapi_video_memory_new(GstAllocator *base_allocator,
 192     GstVaapiVideoMeta *meta)
 193 {
 194     GstVaapiVideoAllocator * const allocator =
 195         GST_VAAPI_VIDEO_ALLOCATOR_CAST(base_allocator);
 196     const GstVideoInfo *vip;
 197     GstVaapiVideoMemory *mem;
 198
 199     mem = g_slice_new(GstVaapiVideoMemory);
 200     if (!mem)
 201         return NULL;
 202
 203     vip = &allocator->image_info;
 204     gst_memory_init(&mem->parent_instance, 0, base_allocator, NULL,
 205         GST_VIDEO_INFO_SIZE(vip), 0, 0, GST_VIDEO_INFO_SIZE(vip));
 206
 207     mem->surface_info = &allocator->surface_info;
 208     mem->surface = NULL;
 209     mem->image_info = &allocator->image_info;
 210     mem->image = NULL;
 211     mem->meta = gst_vaapi_video_meta_ref(meta);
 212     mem->map_count = 0;
 213     mem->use_direct_rendering = allocator->has_direct_rendering;
 214     return GST_MEMORY_CAST(mem);
 215 }
 216
 217 static void
 218 gst_vaapi_video_memory_free(GstVaapiVideoMemory *mem)
 219 {
 220     gst_vaapi_object_replace(&mem->surface, NULL);
 221     gst_vaapi_object_replace(&mem->image, NULL);
 222     gst_vaapi_video_meta_unref(mem->meta);
 223     g_slice_free(GstVaapiVideoMemory, mem);
 224 }
 225
 226 static gpointer
 227 gst_vaapi_video_memory_map(GstVaapiVideoMemory *mem, gsize maxsize, guint flags)
 228 {
 229     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_map() hook");
 230     return NULL;
 231 }
 232
 233 static void
 234 gst_vaapi_video_memory_unmap(GstVaapiVideoMemory *mem)
 235 {
 236     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_unmap() hook");
 237 }
 238
 239 static GstVaapiVideoMemory *
 240 gst_vaapi_video_memory_copy(GstVaapiVideoMemory *mem,
 241     gssize offset, gssize size)
 242 {
 243     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_copy() hook");
 244     return NULL;
 245 }
 246
 247 static GstVaapiVideoMemory *
 248 gst_vaapi_video_memory_share(GstVaapiVideoMemory *mem,
 249     gssize offset, gssize size)
 250 {
 251     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_share() hook");
 252     return NULL;
 253 }
 254
 255 static gboolean
 256 gst_vaapi_video_memory_is_span(GstVaapiVideoMemory *mem1,
 257     GstVaapiVideoMemory *mem2, gsize *offset_ptr)
 258 {
 259     GST_FIXME("unimplemented GstVaapiVideoAllocator::mem_is_span() hook");
 260     return FALSE;
 261 }
 262
 263 /* ------------------------------------------------------------------------ */
 264 /* --- GstVaapiVideoAllocator                                           --- */
 265 /* ------------------------------------------------------------------------ */
 266
 267 #define GST_VAAPI_VIDEO_ALLOCATOR_CLASS(klass)  \
 268     (G_TYPE_CHECK_CLASS_CAST((klass),           \
 269         GST_VAAPI_TYPE_VIDEO_ALLOCATOR,         \
 270         GstVaapiVideoAllocatorClass))
 271
 272 #define GST_VAAPI_IS_VIDEO_ALLOCATOR_CLASS(klass) \
 273     (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_VIDEO_ALLOCATOR))
 274
 275 G_DEFINE_TYPE(GstVaapiVideoAllocator,
 276               gst_vaapi_video_allocator,
 277               GST_TYPE_ALLOCATOR)
 278
 279 static GstMemory *
 280 gst_vaapi_video_allocator_alloc(GstAllocator *allocator, gsize size,
 281     GstAllocationParams *params)
 282 {
 283     g_warning("use gst_vaapi_video_memory_new() to allocate from "
 284         "GstVaapiVideoMemory allocator");
 285
 286     return NULL;
 287 }
 288
 289 static void
 290 gst_vaapi_video_allocator_free(GstAllocator *allocator, GstMemory *mem)
 291 {
 292     gst_vaapi_video_memory_free(GST_VAAPI_VIDEO_MEMORY_CAST(mem));
 293 }
 294
 295 static void
 296 gst_vaapi_video_allocator_class_init(GstVaapiVideoAllocatorClass *klass)
 297 {
 298     GstAllocatorClass * const allocator_class = GST_ALLOCATOR_CLASS(klass);
 299
 300     GST_DEBUG_CATEGORY_INIT(gst_debug_vaapivideomemory,
 301         "vaapivideomemory", 0, "VA-API video memory allocator");
 302
 303     allocator_class->alloc      = gst_vaapi_video_allocator_alloc;
 304     allocator_class->free       = gst_vaapi_video_allocator_free;
 305 }
 306
 307 static void
 308 gst_vaapi_video_allocator_init(GstVaapiVideoAllocator *allocator)
 309 {
 310     GstAllocator * const base_allocator = GST_ALLOCATOR_CAST(allocator);
 311
 312     base_allocator->mem_type = GST_VAAPI_VIDEO_MEMORY_NAME;
 313     base_allocator->mem_map = (GstMemoryMapFunction)
 314         gst_vaapi_video_memory_map;
 315     base_allocator->mem_unmap = (GstMemoryUnmapFunction)
 316         gst_vaapi_video_memory_unmap;
 317     base_allocator->mem_copy = (GstMemoryCopyFunction)
 318         gst_vaapi_video_memory_copy;
 319     base_allocator->mem_share = (GstMemoryShareFunction)
 320         gst_vaapi_video_memory_share;
 321     base_allocator->mem_is_span = (GstMemoryIsSpanFunction)
 322         gst_vaapi_video_memory_is_span;
 323 }
 324
 325 static gboolean
 326 gst_video_info_update_from_image(GstVideoInfo *vip, GstVaapiImage *image)
 327 {
 328     const guchar *data;
 329     guint i, num_planes, data_size;
 330
 331     num_planes = gst_vaapi_image_get_plane_count(image);
 332     g_return_val_if_fail(num_planes == GST_VIDEO_INFO_N_PLANES(vip), FALSE);
 333
 334     /* Determine the base data pointer */
 335     data = gst_vaapi_image_get_plane(image, 0);
 336     for (i = 1; i < num_planes; i++) {
 337         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 338         if (data > plane)
 339             data = plane;
 340     }
 341     data_size = gst_vaapi_image_get_data_size(image);
 342
 343     /* Check that we don't have disjoint planes */
 344     for (i = 0; i < num_planes; i++) {
 345         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 346         if (plane - data > data_size)
 347             return FALSE;
 348     }
 349
 350     /* Update GstVideoInfo structure */
 351     for (i = 0; i < num_planes; i++) {
 352         const guchar * const plane = gst_vaapi_image_get_plane(image, i);
 353         GST_VIDEO_INFO_PLANE_OFFSET(vip, i) = plane - data;
 354         GST_VIDEO_INFO_PLANE_STRIDE(vip, i) =
 355             gst_vaapi_image_get_pitch(image, i);
 356     }
 357     GST_VIDEO_INFO_SIZE(vip) = data_size;
 358     return TRUE;
 359 }
 360
 361 GstAllocator *
 362 gst_vaapi_video_allocator_new(GstVaapiDisplay *display, GstCaps *caps)
 363 {
 364     GstVaapiVideoAllocator *allocator;
 365     GstVideoInfo *vip;
 366     GstVaapiSurface *surface;
 367     GstVaapiImage *image;
 368
 369     g_return_val_if_fail(display != NULL, NULL);
 370     g_return_val_if_fail(GST_IS_CAPS(caps), NULL);
 371
 372     allocator = g_object_new(GST_VAAPI_TYPE_VIDEO_ALLOCATOR, NULL);
 373     if (!allocator)
 374         return NULL;
 375
 376     vip = &allocator->video_info;
 377     gst_video_info_init(vip);
 378     gst_video_info_from_caps(vip, caps);
 379
 380     gst_video_info_set_format(&allocator->surface_info, GST_VIDEO_FORMAT_NV12,
 381         GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 382
 383     if (GST_VIDEO_INFO_FORMAT(vip) != GST_VIDEO_FORMAT_ENCODED) {
 384         image = NULL;
 385         do {
 386             surface = new_surface(display, vip);
 387             if (!surface)
 388                 break;
 389             image = gst_vaapi_surface_derive_image(surface);
 390             if (!image)
 391                 break;
 392             if (!gst_vaapi_image_map(image))
 393                 break;
 394             allocator->has_direct_rendering = gst_video_info_update_from_image(
 395                 &allocator->surface_info, image);
 396             gst_vaapi_image_unmap(image);
 397             GST_INFO("has direct-rendering for %s surfaces: %s",
 398                      GST_VIDEO_INFO_FORMAT_STRING(&allocator->surface_info),
 399                      allocator->has_direct_rendering ? "yes" : "no");
 400         } while (0);
 401         gst_vaapi_object_unref(surface);
 402         gst_vaapi_object_unref(image);
 403     }
 404
 405     allocator->image_info = *vip;
 406     if (GST_VIDEO_INFO_FORMAT(vip) == GST_VIDEO_FORMAT_ENCODED)
 407         gst_video_info_set_format(&allocator->image_info, GST_VIDEO_FORMAT_NV12,
 408             GST_VIDEO_INFO_WIDTH(vip), GST_VIDEO_INFO_HEIGHT(vip));
 409
 410     if (allocator->has_direct_rendering)
 411         allocator->image_info = allocator->surface_info;
 412     else {
 413         do {
 414             image = new_image(display, &allocator->image_info);
 415             if (!image)
 416                 break;
 417             if (!gst_vaapi_image_map(image))
 418                 break;
 419             gst_video_info_update_from_image(&allocator->image_info, image);
 420             gst_vaapi_image_unmap(image);
 421         } while (0);
 422         gst_vaapi_object_unref(image);
 423     }
 424     return GST_ALLOCATOR_CAST(allocator);
 425 }