gstreamer/subprojects/gstreamer-vaapi/gst/vaapi/gstvaapivideomemory.c

1475 lines
42 KiB
C

/*
* gstvaapivideomemory.c - Gstreamer/VA video memory
*
* Copyright (C) 2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "gstcompat.h"
#include <unistd.h>
#include <gst/vaapi/gstvaapisurface_drm.h>
#include <gst/vaapi/gstvaapisurfacepool.h>
#include <gst/vaapi/gstvaapiimagepool.h>
#include "gstvaapivideomemory.h"
#include "gstvaapipluginutil.h"
GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
GST_DEBUG_CATEGORY_STATIC (gst_debug_vaapivideomemory);
#define GST_CAT_DEFAULT gst_debug_vaapivideomemory
#ifndef GST_VIDEO_INFO_FORMAT_STRING
#define GST_VIDEO_INFO_FORMAT_STRING(vip) \
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (vip))
#endif
/* ------------------------------------------------------------------------ */
/* --- GstVaapiVideoMemory --- */
/* ------------------------------------------------------------------------ */
static void gst_vaapi_video_memory_reset_image (GstVaapiVideoMemory * mem);
static void
_init_performance_debug (void)
{
#ifndef GST_DISABLE_GST_DEBUG
static gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
g_once_init_leave (&_init, 1);
}
#endif
}
static void
_init_vaapi_video_memory_debug (void)
{
#ifndef GST_DISABLE_GST_DEBUG
static gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_debug_vaapivideomemory, "vaapivideomemory", 0,
"VA-API video memory allocator");
g_once_init_leave (&_init, 1);
}
#endif
}
static inline void
reset_image_usage (GstVaapiImageUsageFlags * flag)
{
_init_performance_debug ();
GST_CAT_INFO (CAT_PERFORMANCE, "derive image failed, fallbacking to copy");
*flag = GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
}
static inline gboolean
use_native_formats (GstVaapiImageUsageFlags flag)
{
return flag == GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
}
static inline gboolean
use_direct_rendering (GstVaapiImageUsageFlags flag)
{
return flag == GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_RENDER;
}
static inline gboolean
use_direct_uploading (GstVaapiImageUsageFlags flag)
{
return flag == GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_UPLOAD;
}
static guchar *
get_image_data (GstVaapiImage * image)
{
guchar *data;
VAImage va_image;
data = gst_vaapi_image_get_plane (image, 0);
if (!data || !gst_vaapi_image_get_image (image, &va_image))
return NULL;
data -= va_image.offsets[0];
return data;
}
static GstVaapiImage *
new_image (GstVaapiDisplay * display, const GstVideoInfo * vip)
{
if (!GST_VIDEO_INFO_WIDTH (vip) || !GST_VIDEO_INFO_HEIGHT (vip))
return NULL;
return gst_vaapi_image_new (display, GST_VIDEO_INFO_FORMAT (vip),
GST_VIDEO_INFO_WIDTH (vip), GST_VIDEO_INFO_HEIGHT (vip));
}
static gboolean
ensure_image (GstVaapiVideoMemory * mem)
{
if (!mem->image && !use_native_formats (mem->usage_flag)) {
mem->image = gst_vaapi_surface_derive_image (mem->surface);
if (!mem->image) {
reset_image_usage (&mem->usage_flag);
} else if (gst_vaapi_surface_get_format (mem->surface) !=
GST_VIDEO_INFO_FORMAT (mem->image_info)) {
gst_mini_object_replace ((GstMiniObject **) & mem->image, NULL);
reset_image_usage (&mem->usage_flag);
}
}
if (!mem->image) {
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (GST_MEMORY_CAST (mem)->allocator);
mem->image = gst_vaapi_video_pool_get_object (allocator->image_pool);
if (!mem->image)
return FALSE;
}
gst_vaapi_video_meta_set_image (mem->meta, mem->image);
return TRUE;
}
static gboolean
ensure_image_is_current (GstVaapiVideoMemory * mem)
{
if (!use_native_formats (mem->usage_flag))
return TRUE;
if (!GST_VAAPI_VIDEO_MEMORY_FLAG_IS_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_IMAGE_IS_CURRENT)) {
if (!gst_vaapi_surface_get_image (mem->surface, mem->image))
return FALSE;
GST_VAAPI_VIDEO_MEMORY_FLAG_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_IMAGE_IS_CURRENT);
}
return TRUE;
}
static GstVaapiSurfaceProxy *
new_surface_proxy (GstVaapiVideoMemory * mem)
{
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (GST_MEMORY_CAST (mem)->allocator);
return
gst_vaapi_surface_proxy_new_from_pool (GST_VAAPI_SURFACE_POOL
(allocator->surface_pool));
}
static gboolean
ensure_surface (GstVaapiVideoMemory * mem)
{
if (!mem->proxy) {
gst_vaapi_surface_proxy_replace (&mem->proxy,
gst_vaapi_video_meta_get_surface_proxy (mem->meta));
if (!mem->proxy) {
mem->proxy = new_surface_proxy (mem);
if (!mem->proxy)
return FALSE;
gst_vaapi_video_meta_set_surface_proxy (mem->meta, mem->proxy);
}
}
mem->surface = GST_VAAPI_SURFACE_PROXY_SURFACE (mem->proxy);
return mem->surface != NULL;
}
static gboolean
ensure_surface_is_current (GstVaapiVideoMemory * mem)
{
if (!use_native_formats (mem->usage_flag))
return TRUE;
if (!GST_VAAPI_VIDEO_MEMORY_FLAG_IS_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT)) {
if (GST_VAAPI_VIDEO_MEMORY_FLAG_IS_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_IMAGE_IS_CURRENT)
&& !gst_vaapi_surface_put_image (mem->surface, mem->image))
return FALSE;
GST_VAAPI_VIDEO_MEMORY_FLAG_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT);
}
return TRUE;
}
static inline gboolean
map_vaapi_memory (GstVaapiVideoMemory * mem, GstMapFlags flags)
{
if (!ensure_surface (mem))
goto error_no_surface;
if (!ensure_image (mem))
goto error_no_image;
/* Load VA image from surface only for read flag since it returns
* raw pixels */
if ((flags & GST_MAP_READ) && !ensure_image_is_current (mem))
goto error_no_current_image;
if (!gst_vaapi_image_map (mem->image))
goto error_map_image;
/* Mark surface as dirty and expect updates from image */
if (flags & GST_MAP_WRITE)
GST_VAAPI_VIDEO_MEMORY_FLAG_UNSET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT);
return TRUE;
error_no_surface:
{
const GstVideoInfo *const vip = mem->surface_info;
GST_ERROR ("failed to extract VA surface of size %ux%u and format %s",
GST_VIDEO_INFO_WIDTH (vip), GST_VIDEO_INFO_HEIGHT (vip),
GST_VIDEO_INFO_FORMAT_STRING (vip));
return FALSE;
}
error_no_image:
{
const GstVideoInfo *const vip = mem->image_info;
GST_ERROR ("failed to extract VA image of size %ux%u and format %s",
GST_VIDEO_INFO_WIDTH (vip), GST_VIDEO_INFO_HEIGHT (vip),
GST_VIDEO_INFO_FORMAT_STRING (vip));
return FALSE;
}
error_no_current_image:
{
GST_ERROR ("failed to make image current");
return FALSE;
}
error_map_image:
{
GST_ERROR ("failed to map image %" GST_VAAPI_ID_FORMAT,
GST_VAAPI_ID_ARGS (gst_vaapi_image_get_id (mem->image)));
return FALSE;
}
}
static inline void
unmap_vaapi_memory (GstVaapiVideoMemory * mem, GstMapFlags flags)
{
gst_vaapi_image_unmap (mem->image);
if (flags & GST_MAP_WRITE) {
GST_VAAPI_VIDEO_MEMORY_FLAG_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_IMAGE_IS_CURRENT);
}
if (!use_native_formats (mem->usage_flag)) {
gst_vaapi_video_meta_set_image (mem->meta, NULL);
gst_vaapi_video_memory_reset_image (mem);
}
}
gboolean
gst_video_meta_map_vaapi_memory (GstVideoMeta * meta, guint plane,
GstMapInfo * info, gpointer * data, gint * stride, GstMapFlags flags)
{
gboolean ret = FALSE;
GstAllocator *allocator;
GstVaapiVideoMemory *const mem =
GST_VAAPI_VIDEO_MEMORY_CAST (gst_buffer_peek_memory (meta->buffer, 0));
g_return_val_if_fail (mem, FALSE);
g_return_val_if_fail (mem->meta, FALSE);
allocator = GST_MEMORY_CAST (mem)->allocator;
g_return_val_if_fail (GST_VAAPI_IS_VIDEO_ALLOCATOR (allocator), FALSE);
g_mutex_lock (&mem->lock);
if (mem->map_type && mem->map_type != GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_PLANAR)
goto error_incompatible_map;
/* Map for writing */
if (mem->map_count == 0) {
if (!map_vaapi_memory (mem, flags))
goto out;
mem->map_type = GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_PLANAR;
}
mem->map_count++;
*data = gst_vaapi_image_get_plane (mem->image, plane);
*stride = gst_vaapi_image_get_pitch (mem->image, plane);
info->flags = flags;
ret = (*data != NULL);
out:
g_mutex_unlock (&mem->lock);
return ret;
/* ERRORS */
error_incompatible_map:
{
GST_ERROR ("incompatible map type (%d)", mem->map_type);
goto out;
}
}
gboolean
gst_video_meta_unmap_vaapi_memory (GstVideoMeta * meta, guint plane,
GstMapInfo * info)
{
GstAllocator *allocator;
GstVaapiVideoMemory *const mem =
GST_VAAPI_VIDEO_MEMORY_CAST (gst_buffer_peek_memory (meta->buffer, 0));
g_return_val_if_fail (mem, FALSE);
g_return_val_if_fail (mem->meta, FALSE);
g_return_val_if_fail (mem->surface, FALSE);
g_return_val_if_fail (mem->image, FALSE);
allocator = GST_MEMORY_CAST (mem)->allocator;
g_return_val_if_fail (GST_VAAPI_IS_VIDEO_ALLOCATOR (allocator), FALSE);
g_mutex_lock (&mem->lock);
if (--mem->map_count == 0) {
mem->map_type = 0;
/* Unmap VA image used for read/writes */
if (info->flags & GST_MAP_READWRITE)
unmap_vaapi_memory (mem, info->flags);
}
g_mutex_unlock (&mem->lock);
return TRUE;
}
GstMemory *
gst_vaapi_video_memory_new (GstAllocator * base_allocator,
GstVaapiVideoMeta * meta)
{
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (base_allocator);
const GstVideoInfo *vip;
GstVaapiVideoMemory *mem;
g_return_val_if_fail (GST_VAAPI_IS_VIDEO_ALLOCATOR (allocator), NULL);
mem = g_slice_new (GstVaapiVideoMemory);
if (!mem)
return NULL;
vip = &allocator->image_info;
gst_memory_init (&mem->parent_instance, GST_MEMORY_FLAG_NO_SHARE,
base_allocator, NULL, GST_VIDEO_INFO_SIZE (vip), 0,
0, GST_VIDEO_INFO_SIZE (vip));
mem->proxy = NULL;
mem->surface_info = &allocator->surface_info;
mem->surface = NULL;
mem->image_info = &allocator->image_info;
mem->image = NULL;
mem->meta = meta ? gst_vaapi_video_meta_ref (meta) : NULL;
mem->map_type = 0;
mem->map_count = 0;
mem->map_surface_id = VA_INVALID_ID;
mem->usage_flag = allocator->usage_flag;
g_mutex_init (&mem->lock);
GST_VAAPI_VIDEO_MEMORY_FLAG_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT);
return GST_MEMORY_CAST (mem);
}
void
gst_vaapi_video_memory_reset_image (GstVaapiVideoMemory * mem)
{
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (GST_MEMORY_CAST (mem)->allocator);
if (!use_native_formats (mem->usage_flag))
gst_mini_object_replace ((GstMiniObject **) & mem->image, NULL);
else if (mem->image) {
gst_vaapi_video_pool_put_object (allocator->image_pool, mem->image);
mem->image = NULL;
}
/* Don't synchronize to surface, this shall have happened during
* unmaps */
GST_VAAPI_VIDEO_MEMORY_FLAG_UNSET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_IMAGE_IS_CURRENT);
}
void
gst_vaapi_video_memory_reset_surface (GstVaapiVideoMemory * mem)
{
mem->surface = NULL;
gst_vaapi_video_memory_reset_image (mem);
gst_vaapi_surface_proxy_replace (&mem->proxy, NULL);
if (mem->meta)
gst_vaapi_video_meta_set_surface_proxy (mem->meta, NULL);
GST_VAAPI_VIDEO_MEMORY_FLAG_UNSET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT);
}
gboolean
gst_vaapi_video_memory_sync (GstVaapiVideoMemory * mem)
{
g_return_val_if_fail (mem, FALSE);
return ensure_surface_is_current (mem);
}
static gpointer
gst_vaapi_video_memory_map (GstMemory * base_mem, gsize maxsize, guint flags)
{
gpointer data = NULL;
GstVaapiVideoMemory *const mem = GST_VAAPI_VIDEO_MEMORY_CAST (base_mem);
g_return_val_if_fail (mem, NULL);
g_return_val_if_fail (mem->meta, NULL);
g_mutex_lock (&mem->lock);
if (mem->map_count == 0) {
switch (flags & (GST_MAP_READWRITE | GST_MAP_VAAPI)) {
case 0:
case GST_MAP_VAAPI:
// No flags set: return a GstVaapiSurfaceProxy
gst_vaapi_surface_proxy_replace (&mem->proxy,
gst_vaapi_video_meta_get_surface_proxy (mem->meta));
if (!mem->proxy)
goto error_no_surface_proxy;
if (!ensure_surface_is_current (mem))
goto error_no_current_surface;
mem->map_type = GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_SURFACE;
break;
case GST_MAP_READ:
if (!map_vaapi_memory (mem, flags))
goto out;
mem->map_type = GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_LINEAR;
break;
default:
goto error_unsupported_map;
}
}
switch (mem->map_type) {
case GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_SURFACE:
if (!mem->proxy)
goto error_no_surface_proxy;
if (flags == GST_MAP_VAAPI) {
mem->map_surface_id = GST_VAAPI_SURFACE_PROXY_SURFACE_ID (mem->proxy);
if (mem->map_surface_id == VA_INVALID_ID)
goto error_no_current_surface;
data = &mem->map_surface_id;
} else {
data = mem->proxy;
}
break;
case GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_LINEAR:
if (!mem->image)
goto error_no_image;
data = get_image_data (mem->image);
break;
default:
goto error_unsupported_map_type;
}
mem->map_count++;
out:
g_mutex_unlock (&mem->lock);
return data;
/* ERRORS */
error_unsupported_map:
{
GST_ERROR ("unsupported map flags (0x%x)", flags);
goto out;
}
error_unsupported_map_type:
{
GST_ERROR ("unsupported map type (%d)", mem->map_type);
goto out;
}
error_no_surface_proxy:
{
GST_ERROR ("failed to extract GstVaapiSurfaceProxy from video meta");
goto out;
}
error_no_current_surface:
{
GST_ERROR ("failed to make surface current");
goto out;
}
error_no_image:
{
GST_ERROR ("failed to extract VA image from video buffer");
goto out;
}
}
static void
gst_vaapi_video_memory_unmap_full (GstMemory * base_mem, GstMapInfo * info)
{
GstVaapiVideoMemory *const mem = GST_VAAPI_VIDEO_MEMORY_CAST (base_mem);
g_mutex_lock (&mem->lock);
if (mem->map_count == 1) {
switch (mem->map_type) {
case GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_SURFACE:
mem->map_surface_id = VA_INVALID_ID;
gst_vaapi_surface_proxy_replace (&mem->proxy, NULL);
break;
case GST_VAAPI_VIDEO_MEMORY_MAP_TYPE_LINEAR:
unmap_vaapi_memory (mem, info->flags);
break;
default:
goto error_incompatible_map;
}
mem->map_type = 0;
}
mem->map_count--;
out:
g_mutex_unlock (&mem->lock);
return;
/* ERRORS */
error_incompatible_map:
{
GST_ERROR ("incompatible map type (%d)", mem->map_type);
goto out;
}
}
static GstMemory *
gst_vaapi_video_memory_copy (GstMemory * base_mem, gssize offset, gssize size)
{
GstVaapiVideoMemory *const mem = GST_VAAPI_VIDEO_MEMORY_CAST (base_mem);
GstVaapiVideoMeta *meta;
GstAllocator *allocator;
GstMemory *out_mem;
gsize maxsize;
g_return_val_if_fail (mem, NULL);
g_return_val_if_fail (mem->meta, NULL);
allocator = base_mem->allocator;
g_return_val_if_fail (GST_VAAPI_IS_VIDEO_ALLOCATOR (allocator), FALSE);
/* XXX: this implements a soft-copy, i.e. underlying VA surfaces
are not copied */
(void) gst_memory_get_sizes (base_mem, NULL, &maxsize);
if (offset != 0 || (size != -1 && (gsize) size != maxsize))
goto error_unsupported;
if (!ensure_surface_is_current (mem))
goto error_no_current_surface;
meta = gst_vaapi_video_meta_copy (mem->meta);
if (!meta)
goto error_allocate_memory;
out_mem = gst_vaapi_video_memory_new (allocator, meta);
gst_vaapi_video_meta_unref (meta);
if (!out_mem)
goto error_allocate_memory;
return out_mem;
/* ERRORS */
error_no_current_surface:
{
GST_ERROR ("failed to make surface current");
return NULL;
}
error_unsupported:
{
GST_ERROR ("failed to copy partial memory (unsupported operation)");
return NULL;
}
error_allocate_memory:
{
GST_ERROR ("failed to allocate GstVaapiVideoMemory copy");
return NULL;
}
}
/* ------------------------------------------------------------------------ */
/* --- GstVaapiVideoAllocator --- */
/* ------------------------------------------------------------------------ */
G_DEFINE_TYPE (GstVaapiVideoAllocator, gst_vaapi_video_allocator,
GST_TYPE_ALLOCATOR);
static void
gst_vaapi_video_allocator_free (GstAllocator * allocator, GstMemory * base_mem)
{
GstVaapiVideoMemory *const mem = GST_VAAPI_VIDEO_MEMORY_CAST (base_mem);
mem->surface = NULL;
gst_vaapi_video_memory_reset_image (mem);
gst_vaapi_surface_proxy_replace (&mem->proxy, NULL);
gst_vaapi_video_meta_replace (&mem->meta, NULL);
g_mutex_clear (&mem->lock);
g_slice_free (GstVaapiVideoMemory, mem);
}
static void
gst_vaapi_video_allocator_finalize (GObject * object)
{
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (object);
gst_vaapi_video_pool_replace (&allocator->surface_pool, NULL);
gst_vaapi_video_pool_replace (&allocator->image_pool, NULL);
G_OBJECT_CLASS (gst_vaapi_video_allocator_parent_class)->finalize (object);
}
static void
gst_vaapi_video_allocator_class_init (GstVaapiVideoAllocatorClass * klass)
{
GObjectClass *const object_class = G_OBJECT_CLASS (klass);
GstAllocatorClass *const allocator_class = GST_ALLOCATOR_CLASS (klass);
_init_vaapi_video_memory_debug ();
object_class->finalize = gst_vaapi_video_allocator_finalize;
allocator_class->free = gst_vaapi_video_allocator_free;
}
static void
gst_vaapi_video_allocator_init (GstVaapiVideoAllocator * allocator)
{
GstAllocator *const base_allocator = GST_ALLOCATOR_CAST (allocator);
base_allocator->mem_type = GST_VAAPI_VIDEO_MEMORY_NAME;
base_allocator->mem_map = gst_vaapi_video_memory_map;
base_allocator->mem_unmap_full = gst_vaapi_video_memory_unmap_full;
base_allocator->mem_copy = gst_vaapi_video_memory_copy;
GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
}
static gboolean
gst_video_info_update_from_image (GstVideoInfo * vip, GstVaapiImage * image)
{
GstVideoFormat format;
const guchar *data;
guint i, num_planes, data_size, width, height;
/* Reset format from image */
format = gst_vaapi_image_get_format (image);
gst_vaapi_image_get_size (image, &width, &height);
gst_video_info_set_format (vip, format, width, height);
num_planes = gst_vaapi_image_get_plane_count (image);
g_return_val_if_fail (num_planes == GST_VIDEO_INFO_N_PLANES (vip), FALSE);
/* Determine the base data pointer */
data = get_image_data (image);
g_return_val_if_fail (data != NULL, FALSE);
data_size = gst_vaapi_image_get_data_size (image);
/* Check that we don't have disjoint planes */
for (i = 0; i < num_planes; i++) {
const guchar *const plane = gst_vaapi_image_get_plane (image, i);
if (plane - data > data_size)
return FALSE;
}
/* Update GstVideoInfo structure */
for (i = 0; i < num_planes; i++) {
const guchar *const plane = gst_vaapi_image_get_plane (image, i);
GST_VIDEO_INFO_PLANE_OFFSET (vip, i) = plane - data;
GST_VIDEO_INFO_PLANE_STRIDE (vip, i) = gst_vaapi_image_get_pitch (image, i);
}
GST_VIDEO_INFO_SIZE (vip) = data_size;
return TRUE;
}
static gboolean
gst_video_info_update_from_surface (GstVideoInfo * vip,
GstVaapiSurface * surface)
{
GstVaapiImage *image;
gboolean ret;
ret = FALSE;
image = gst_vaapi_surface_derive_image (surface);
if (!image)
goto error_no_derive_image;
if (!gst_vaapi_image_map (image))
goto error_cannot_map;
ret = gst_video_info_update_from_image (vip, image);
gst_vaapi_image_unmap (image);
bail:
gst_vaapi_image_unref (image);
return ret;
/* ERRORS */
error_no_derive_image:
{
GST_INFO ("Cannot create a VA derived image from surface %p", surface);
return FALSE;
}
error_cannot_map:
{
GST_ERROR ("Cannot map VA derived image %p", image);
goto bail;
}
}
#ifndef GST_DISABLE_GST_DEBUG
static const gchar *
gst_vaapi_image_usage_flags_to_string (GstVaapiImageUsageFlags usage_flag)
{
switch (usage_flag) {
case GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS:
return "native uploading";
case GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_RENDER:
return "direct rendering";
case GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_UPLOAD:
return "direct uploading";
default:
return "unknown";
}
}
#endif
static inline gboolean
allocator_configure_surface_try_specified_format (GstVaapiDisplay * display,
const GstVideoInfo * allocation_info, GstVaapiImageUsageFlags usage_flag,
guint surface_alloc_flag, GstVideoInfo * ret_surface_info,
GstVaapiImageUsageFlags * ret_usage_flag)
{
GstVaapiImageUsageFlags rflag;
GstVaapiSurface *surface;
GstVideoInfo sinfo, rinfo;
/* Try to create a surface with the given allocation info */
surface =
gst_vaapi_surface_new_full (display, allocation_info, surface_alloc_flag);
if (!surface)
return FALSE;
/* surface created and just native format usage was requested */
if (use_native_formats (usage_flag)) {
rflag = GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
rinfo = *allocation_info;
goto out;
}
/* Further checks whether that surface can support direct
* upload/render */
if (gst_video_info_update_from_surface (&sinfo, surface)) {
if (GST_VIDEO_INFO_FORMAT (&sinfo) ==
GST_VIDEO_INFO_FORMAT (allocation_info)) {
/* Set the correct flag */
if (use_direct_rendering (usage_flag)
&& !use_direct_uploading (usage_flag)) {
rflag = GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_RENDER;
} else if (!use_direct_rendering (usage_flag)
&& use_direct_uploading (usage_flag)) {
rflag = GST_VAAPI_IMAGE_USAGE_FLAG_DIRECT_UPLOAD;
} else {
g_assert_not_reached ();
}
} else {
/* It shouldn't happen, but still it's possible. Just use
* native. */
GST_FIXME ("Got a derive image with different format!");
rflag = GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
}
rinfo = sinfo;
goto out;
}
/* Can not derive image or not the same format, don't use derived
images, just fallback to use native */
rflag = GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
rinfo = *allocation_info;
out:
gst_vaapi_surface_unref (surface);
*ret_surface_info = rinfo;
*ret_usage_flag = rflag;
return TRUE;
}
static inline gboolean
allocator_configure_surface_try_other_format (GstVaapiDisplay * display,
const GstVideoInfo * allocation_info, GstVideoInfo * ret_surface_info)
{
GstVaapiSurface *surface;
GstVideoFormat fmt;
GstVideoInfo sinfo;
/* Find a best native surface format if possible */
fmt = gst_vaapi_video_format_get_best_native
(GST_VIDEO_INFO_FORMAT (allocation_info));
if (fmt == GST_VIDEO_FORMAT_UNKNOWN
|| fmt == GST_VIDEO_INFO_FORMAT (allocation_info))
goto error_invalid_format;
/* create a info with "best native" format */
gst_video_info_set_format (&sinfo, fmt,
GST_VIDEO_INFO_WIDTH (allocation_info),
GST_VIDEO_INFO_HEIGHT (allocation_info));
/* try it */
surface = gst_vaapi_surface_new_full (display, &sinfo, 0);
if (!surface)
goto error_no_surface;
gst_vaapi_surface_unref (surface);
*ret_surface_info = sinfo;
return TRUE;
/* ERRORS */
error_invalid_format:
{
GST_ERROR ("Cannot handle format %s",
GST_VIDEO_INFO_FORMAT_STRING (allocation_info));
return FALSE;
}
error_no_surface:
{
GST_ERROR ("Cannot create a VA Surface");
return FALSE;
}
}
static inline gboolean
allocator_configure_surface_info (GstVaapiDisplay * display,
GstVaapiVideoAllocator * allocator, GstVaapiImageUsageFlags req_usage_flag,
guint surface_alloc_flags)
{
GstVaapiImageUsageFlags usage_flag;
GstVideoInfo allocation_info, surface_info;
/* get rid of possible encoded format and assume NV12 */
allocation_info = allocator->allocation_info;
gst_video_info_force_nv12_if_encoded (&allocation_info);
/* Step1: Try the specified format and flag. May fallback to native if
direct upload/rendering is unavailable. */
if (allocator_configure_surface_try_specified_format (display,
&allocation_info, req_usage_flag, surface_alloc_flags,
&surface_info, &usage_flag)) {
allocator->usage_flag = usage_flag;
allocator->surface_info = surface_info;
goto success;
}
/* Step2: Try other surface format. Because format is different,
direct upload/rendering is unavailable, always use native */
if (allocator_configure_surface_try_other_format (display, &allocation_info,
&surface_info)) {
allocator->usage_flag = GST_VAAPI_IMAGE_USAGE_FLAG_NATIVE_FORMATS;
allocator->surface_info = surface_info;
goto success;
}
GST_INFO_OBJECT (allocator, "Failed to configure the video format: %s"
" with usage flag: %s",
GST_VIDEO_INFO_FORMAT_STRING (&allocator->allocation_info),
gst_vaapi_image_usage_flags_to_string (req_usage_flag));
return FALSE;
success:
GST_DEBUG_OBJECT (allocator, "success to set the surface format %s"
" for video format %s with %s",
GST_VIDEO_INFO_FORMAT_STRING (&allocator->surface_info),
GST_VIDEO_INFO_FORMAT_STRING (&allocator->allocation_info),
gst_vaapi_image_usage_flags_to_string (allocator->usage_flag));
return TRUE;
}
static inline gboolean
allocator_configure_image_info (GstVaapiDisplay * display,
GstVaapiVideoAllocator * allocator)
{
GstVaapiImage *image = NULL;
const GstVideoInfo *vinfo;
gboolean ret = FALSE;
if (!use_native_formats (allocator->usage_flag)) {
allocator->image_info = allocator->surface_info;
return TRUE;
}
vinfo = &allocator->allocation_info;
allocator->image_info = *vinfo;
gst_video_info_force_nv12_if_encoded (&allocator->image_info);
image = new_image (display, &allocator->image_info);
if (!image)
goto error_no_image;
if (!gst_vaapi_image_map (image))
goto error_cannot_map;
gst_video_info_update_from_image (&allocator->image_info, image);
gst_vaapi_image_unmap (image);
ret = TRUE;
bail:
if (image)
gst_vaapi_image_unref (image);
return ret;
/* ERRORS */
error_no_image:
{
GST_ERROR ("Cannot create VA image");
return ret;
}
error_cannot_map:
{
GST_ERROR ("Failed to map VA image %p", image);
goto bail;
}
}
static inline gboolean
allocator_params_init (GstVaapiVideoAllocator * allocator,
GstVaapiDisplay * display, const GstVideoInfo * alloc_info,
guint surface_alloc_flags, GstVaapiImageUsageFlags req_usage_flag)
{
allocator->allocation_info = *alloc_info;
if (!allocator_configure_surface_info (display, allocator, req_usage_flag,
surface_alloc_flags))
return FALSE;
allocator->surface_pool = gst_vaapi_surface_pool_new_full (display,
&allocator->surface_info, surface_alloc_flags);
if (!allocator->surface_pool)
goto error_create_surface_pool;
if (!allocator_configure_image_info (display, allocator))
return FALSE;
allocator->image_pool = gst_vaapi_image_pool_new (display,
&allocator->image_info);
if (!allocator->image_pool)
goto error_create_image_pool;
gst_allocator_set_vaapi_video_info (GST_ALLOCATOR_CAST (allocator),
&allocator->image_info, surface_alloc_flags);
return TRUE;
/* ERRORS */
error_create_surface_pool:
{
GST_ERROR ("failed to allocate VA surface pool");
return FALSE;
}
error_create_image_pool:
{
GST_ERROR ("failed to allocate VA image pool");
return FALSE;
}
}
GstAllocator *
gst_vaapi_video_allocator_new (GstVaapiDisplay * display,
const GstVideoInfo * alloc_info, guint surface_alloc_flags,
GstVaapiImageUsageFlags req_usage_flag)
{
GstVaapiVideoAllocator *allocator;
g_return_val_if_fail (display != NULL, NULL);
g_return_val_if_fail (alloc_info != NULL, NULL);
allocator = g_object_new (GST_VAAPI_TYPE_VIDEO_ALLOCATOR, NULL);
if (!allocator)
return NULL;
if (!allocator_params_init (allocator, display, alloc_info,
surface_alloc_flags, req_usage_flag)) {
g_object_unref (allocator);
return NULL;
}
return GST_ALLOCATOR_CAST (allocator);
}
/* ------------------------------------------------------------------------ */
/* --- GstVaapiDmaBufMemory --- */
/* ------------------------------------------------------------------------ */
#define GST_VAAPI_BUFFER_PROXY_QUARK gst_vaapi_buffer_proxy_quark_get ()
static GQuark
gst_vaapi_buffer_proxy_quark_get (void)
{
static gsize g_quark;
if (g_once_init_enter (&g_quark)) {
gsize quark = (gsize) g_quark_from_static_string ("GstVaapiBufferProxy");
g_once_init_leave (&g_quark, quark);
}
return g_quark;
}
/* Whether @mem holds an internal VA surface proxy created at
* gst_vaapi_dmabuf_memory_new(). */
gboolean
gst_vaapi_dmabuf_memory_holds_surface (GstMemory * mem)
{
g_return_val_if_fail (mem != NULL, FALSE);
return
GPOINTER_TO_INT (gst_mini_object_get_qdata (GST_MINI_OBJECT_CAST (mem),
GST_VAAPI_BUFFER_PROXY_QUARK)) == TRUE;
}
GstMemory *
gst_vaapi_dmabuf_memory_new (GstAllocator * base_allocator,
GstVaapiVideoMeta * meta)
{
GstMemory *mem;
GstVaapiDisplay *display;
GstVaapiSurface *surface;
GstVaapiSurfaceProxy *proxy;
GstVaapiBufferProxy *dmabuf_proxy;
gint dmabuf_fd;
const GstVideoInfo *surface_info;
guint surface_alloc_flags;
gboolean needs_surface;
GstVaapiDmaBufAllocator *const allocator =
GST_VAAPI_DMABUF_ALLOCATOR_CAST (base_allocator);
g_return_val_if_fail (allocator != NULL, NULL);
g_return_val_if_fail (meta != NULL, NULL);
surface_info = gst_allocator_get_vaapi_video_info (base_allocator,
&surface_alloc_flags);
if (!surface_info)
return NULL;
display = gst_vaapi_video_meta_get_display (meta);
if (!display)
return NULL;
proxy = gst_vaapi_video_meta_get_surface_proxy (meta);
needs_surface = (proxy == NULL);
if (needs_surface) {
/* When exporting output VPP surfaces, or when exporting input
* surfaces to be filled/imported by an upstream element, such as
* v4l2src, we have to instantiate a VA surface to store it. */
surface = gst_vaapi_surface_new_full (display, surface_info,
surface_alloc_flags);
if (!surface)
goto error_create_surface;
proxy = gst_vaapi_surface_proxy_new (surface);
if (!proxy)
goto error_create_surface_proxy;
/* The proxy has incremented the surface ref count. */
gst_vaapi_surface_unref (surface);
} else {
/* When exporting existing surfaces that come from decoder's
* context. */
surface = GST_VAAPI_SURFACE_PROXY_SURFACE (proxy);
}
dmabuf_proxy = gst_vaapi_surface_peek_dma_buf_handle (surface);
if (!dmabuf_proxy)
goto error_create_dmabuf_proxy;
if (needs_surface) {
gst_vaapi_video_meta_set_surface_proxy (meta, proxy);
/* meta holds the proxy's reference */
gst_vaapi_surface_proxy_unref (proxy);
}
/* Need dup because GstDmabufMemory creates the GstFdMemory with flag
* GST_FD_MEMORY_FLAG_NONE. So when being freed it calls close on the fd
* because GST_FD_MEMORY_FLAG_DONT_CLOSE is not set. */
dmabuf_fd = gst_vaapi_buffer_proxy_get_handle (dmabuf_proxy);
if (dmabuf_fd < 0 || (dmabuf_fd = dup (dmabuf_fd)) < 0)
goto error_create_dmabuf_handle;
mem = gst_dmabuf_allocator_alloc (base_allocator, dmabuf_fd,
gst_vaapi_buffer_proxy_get_size (dmabuf_proxy));
if (!mem)
goto error_create_dmabuf_memory;
if (needs_surface) {
/* qdata express that memory has an associated surface. */
gst_mini_object_set_qdata (GST_MINI_OBJECT_CAST (mem),
GST_VAAPI_BUFFER_PROXY_QUARK, GINT_TO_POINTER (TRUE), NULL);
}
/* When a VA surface is going to be filled by a VAAPI element
* (decoder or VPP), it has _not_ be marked as busy in the driver.
* Releasing the surface's derived image, held by the buffer proxy,
* the surface will be unmarked as busy. */
if (allocator->direction == GST_PAD_SRC)
gst_vaapi_buffer_proxy_release_data (dmabuf_proxy);
return mem;
/* ERRORS */
error_create_surface:
{
GST_ERROR ("failed to create VA surface (format:%s size:%ux%u)",
GST_VIDEO_INFO_FORMAT_STRING (surface_info),
GST_VIDEO_INFO_WIDTH (surface_info),
GST_VIDEO_INFO_HEIGHT (surface_info));
return NULL;
}
error_create_surface_proxy:
{
GST_ERROR ("failed to create VA surface proxy");
gst_vaapi_surface_unref (surface);
return NULL;
}
error_create_dmabuf_proxy:
{
GST_ERROR ("failed to export VA surface to DMABUF");
if (surface)
gst_vaapi_surface_unref (surface);
if (proxy)
gst_vaapi_surface_proxy_unref (proxy);
return NULL;
}
error_create_dmabuf_handle:
{
GST_ERROR ("failed to duplicate DMABUF handle");
gst_vaapi_buffer_proxy_unref (dmabuf_proxy);
return NULL;
}
error_create_dmabuf_memory:
{
GST_ERROR ("failed to create DMABUF memory");
close (dmabuf_fd);
gst_vaapi_buffer_proxy_unref (dmabuf_proxy);
return NULL;
}
}
/* ------------------------------------------------------------------------ */
/* --- GstVaapiDmaBufAllocator --- */
/* ------------------------------------------------------------------------ */
G_DEFINE_TYPE (GstVaapiDmaBufAllocator,
gst_vaapi_dmabuf_allocator, GST_TYPE_DMABUF_ALLOCATOR);
static void
gst_vaapi_dmabuf_allocator_class_init (GstVaapiDmaBufAllocatorClass * klass)
{
_init_vaapi_video_memory_debug ();
}
static void
gst_vaapi_dmabuf_allocator_init (GstVaapiDmaBufAllocator * allocator)
{
GstAllocator *const base_allocator = GST_ALLOCATOR_CAST (allocator);
base_allocator->mem_type = GST_VAAPI_DMABUF_ALLOCATOR_NAME;
allocator->direction = GST_PAD_SINK;
}
GstAllocator *
gst_vaapi_dmabuf_allocator_new (GstVaapiDisplay * display,
const GstVideoInfo * alloc_info, guint surface_alloc_flags,
GstPadDirection direction)
{
GstVaapiDmaBufAllocator *allocator = NULL;
GstVaapiSurface *surface = NULL;
GstVideoInfo surface_info;
GstAllocator *base_allocator;
g_return_val_if_fail (display != NULL, NULL);
g_return_val_if_fail (alloc_info != NULL, NULL);
allocator = g_object_new (GST_VAAPI_TYPE_DMABUF_ALLOCATOR, NULL);
if (!allocator)
goto error_no_allocator;
base_allocator = GST_ALLOCATOR_CAST (allocator);
gst_video_info_set_format (&surface_info, GST_VIDEO_INFO_FORMAT (alloc_info),
GST_VIDEO_INFO_WIDTH (alloc_info), GST_VIDEO_INFO_HEIGHT (alloc_info));
surface = gst_vaapi_surface_new_full (display, alloc_info,
surface_alloc_flags);
if (!surface)
goto error_no_surface;
if (!gst_video_info_update_from_surface (&surface_info, surface))
goto fail;
gst_mini_object_replace ((GstMiniObject **) & surface, NULL);
gst_allocator_set_vaapi_video_info (base_allocator, &surface_info,
surface_alloc_flags);
allocator->direction = direction;
return base_allocator;
/* ERRORS */
fail:
{
gst_mini_object_replace ((GstMiniObject **) & surface, NULL);
gst_object_replace ((GstObject **) & base_allocator, NULL);
return NULL;
}
error_no_allocator:
{
GST_ERROR ("failed to create a new dmabuf allocator");
return NULL;
}
error_no_surface:
{
GST_ERROR ("failed to create a new surface");
goto fail;
}
}
/* ------------------------------------------------------------------------ */
/* --- GstVaapiVideoInfo = { GstVideoInfo, flags } --- */
/* ------------------------------------------------------------------------ */
#define GST_VAAPI_VIDEO_INFO_QUARK gst_vaapi_video_info_quark_get ()
static GQuark
gst_vaapi_video_info_quark_get (void)
{
static gsize g_quark;
if (g_once_init_enter (&g_quark)) {
gsize quark = (gsize) g_quark_from_static_string ("GstVaapiVideoInfo");
g_once_init_leave (&g_quark, quark);
}
return g_quark;
}
#define ALLOCATION_VINFO_QUARK allocation_vinfo_quark_get ()
static GQuark
allocation_vinfo_quark_get (void)
{
static gsize g_quark;
if (g_once_init_enter (&g_quark)) {
gsize quark = (gsize) g_quark_from_static_string ("allocation-vinfo");
g_once_init_leave (&g_quark, quark);
}
return g_quark;
}
#define SURFACE_ALLOC_FLAGS_QUARK surface_alloc_flags_quark_get ()
static GQuark
surface_alloc_flags_quark_get (void)
{
static gsize g_quark;
if (g_once_init_enter (&g_quark)) {
gsize quark = (gsize) g_quark_from_static_string ("surface-alloc-flags");
g_once_init_leave (&g_quark, quark);
}
return g_quark;
}
#define NEGOTIATED_VINFO_QUARK negotiated_vinfo_quark_get ()
static GQuark
negotiated_vinfo_quark_get (void)
{
static gsize g_quark;
if (g_once_init_enter (&g_quark)) {
gsize quark = (gsize) g_quark_from_static_string ("negotiated-vinfo");
g_once_init_leave (&g_quark, quark);
}
return g_quark;
}
/**
* gst_allocator_get_vaapi_video_info:
* @allocator: a #GstAllocator
* @out_flags_ptr: (out): the stored surface allocation flags
*
* Will get the @allocator qdata to fetch the flags and the
* allocation's #GstVideoInfo stored in it.
*
* The allocation video info, is the image video info in the case of
* the #GstVaapiVideoAllocator; and the allocation video info in the
* case of #GstVaapiDmaBufAllocator.
*
* Returns: the stored #GstVideoInfo
**/
const GstVideoInfo *
gst_allocator_get_vaapi_video_info (GstAllocator * allocator,
guint * out_flags_ptr)
{
const GstStructure *structure;
const GValue *value;
g_return_val_if_fail (GST_IS_ALLOCATOR (allocator), NULL);
structure =
g_object_get_qdata (G_OBJECT (allocator), GST_VAAPI_VIDEO_INFO_QUARK);
if (!structure)
return NULL;
if (out_flags_ptr) {
value = gst_structure_id_get_value (structure, SURFACE_ALLOC_FLAGS_QUARK);
if (!value)
return NULL;
*out_flags_ptr = g_value_get_uint (value);
}
value = gst_structure_id_get_value (structure, ALLOCATION_VINFO_QUARK);
if (!value)
return NULL;
return g_value_get_boxed (value);
}
/**
* gst_allocator_set_vaapi_video_info:
* @allocator: a #GstAllocator
* @alloc_info: the allocation #GstVideoInfo to store
* @surface_alloc_flags: the flags to store
*
* Stores as GObject's qdata the @alloc_info and the
* @surface_alloc_flags in the allocator. This will "decorate" the
* allocator as a GstVaapi one.
*
* Returns: always %TRUE
**/
gboolean
gst_allocator_set_vaapi_video_info (GstAllocator * allocator,
const GstVideoInfo * alloc_info, guint surface_alloc_flags)
{
g_return_val_if_fail (GST_IS_ALLOCATOR (allocator), FALSE);
g_return_val_if_fail (alloc_info != NULL, FALSE);
g_object_set_qdata_full (G_OBJECT (allocator), GST_VAAPI_VIDEO_INFO_QUARK,
gst_structure_new_id (GST_VAAPI_VIDEO_INFO_QUARK,
ALLOCATION_VINFO_QUARK, GST_TYPE_VIDEO_INFO, alloc_info,
SURFACE_ALLOC_FLAGS_QUARK, G_TYPE_UINT, surface_alloc_flags, NULL),
(GDestroyNotify) gst_structure_free);
return TRUE;
}
/**
* gst_allocator_set_vaapi_negotiated_video_info:
* @allocator: a #GstAllocator
* @negotiated_vinfo: the negotiated #GstVideoInfo to store. If NULL, then
* removes any previously set value.
*
* Stores as GObject's qdata the @negotiated_vinfo in the allocator
* instance.
*
* The @negotiated_vinfo is different of the @alloc_info from
* gst_allocator_set_vaapi_video_info(), and might not be set.
**/
void
gst_allocator_set_vaapi_negotiated_video_info (GstAllocator * allocator,
const GstVideoInfo * negotiated_vinfo)
{
g_return_if_fail (allocator && GST_IS_ALLOCATOR (allocator));
if (negotiated_vinfo)
g_object_set_qdata_full (G_OBJECT (allocator), NEGOTIATED_VINFO_QUARK,
gst_video_info_copy (negotiated_vinfo),
(GDestroyNotify) gst_video_info_free);
else
g_object_set_qdata (G_OBJECT (allocator), NEGOTIATED_VINFO_QUARK, NULL);
}
/**
* gst_allocator_get_vaapi_negotiated_video_info:
* @allocator: a #GstAllocator
*
* Returns: the stored negotiation #GstVideoInfo, if it was stored
* previously. Otherwise, %NULL
**/
GstVideoInfo *
gst_allocator_get_vaapi_negotiated_video_info (GstAllocator * allocator)
{
g_return_val_if_fail (GST_IS_ALLOCATOR (allocator), NULL);
return g_object_get_qdata (G_OBJECT (allocator), NEGOTIATED_VINFO_QUARK);
}
/**
* gst_vaapi_is_dmabuf_allocator:
* @allocator: an #GstAllocator
*
* Checks if the allocator is DMABuf allocator with the GstVaapi
* decorator.
*
* Returns: %TRUE if @allocator is a DMABuf allocator type with
* GstVaapi decorator.
**/
gboolean
gst_vaapi_is_dmabuf_allocator (GstAllocator * allocator)
{
GstStructure *st;
g_return_val_if_fail (GST_IS_ALLOCATOR (allocator), FALSE);
if (g_strcmp0 (allocator->mem_type, GST_VAAPI_DMABUF_ALLOCATOR_NAME) != 0)
return FALSE;
st = g_object_get_qdata (G_OBJECT (allocator), GST_VAAPI_VIDEO_INFO_QUARK);
return (st != NULL);
}
/**
* gst_vaapi_dmabuf_can_map:
* @display: a #GstVaapiDisplay
* @allocator: a #GstAllocator
*
* It will create a dmabuf-based buffer using @allocator, and it will
* try to map it using gst_memory_map().
*
* Returns: %TRUE if the internal dummy buffer can be
* mapped. Otherwise %FALSE.
**/
gboolean
gst_vaapi_dmabuf_can_map (GstVaapiDisplay * display, GstAllocator * allocator)
{
GstVaapiVideoMeta *meta;
GstMemory *mem;
GstMapInfo info;
gboolean ret;
g_return_val_if_fail (display != NULL, FALSE);
ret = FALSE;
mem = NULL;
meta = NULL;
if (!gst_vaapi_is_dmabuf_allocator (allocator))
return FALSE;
meta = gst_vaapi_video_meta_new (display);
if (!meta)
return FALSE;
mem = gst_vaapi_dmabuf_memory_new (allocator, meta);
if (!mem)
goto bail;
if (!gst_memory_map (mem, &info, GST_MAP_READWRITE) || info.size == 0)
goto bail;
gst_memory_unmap (mem, &info);
ret = TRUE;
bail:
if (mem)
gst_memory_unref (mem);
if (meta)
gst_vaapi_video_meta_unref (meta);
return ret;
}