gstreamer/subprojects/gst-plugins-base/ext/gl/gstgldownloadelement.c

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/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystree00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gl/gl.h>
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
#include <gst/gl/egl/gsteglimage.h>
#include <gst/allocators/gstdmabuf.h>
#endif
#include "gstglelements.h"
#include "gstgldownloadelement.h"
GST_DEBUG_CATEGORY_STATIC (gst_gl_download_element_debug);
#define GST_CAT_DEFAULT gst_gl_download_element_debug
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
#include <gst/gl/egl/gstgldisplay_egl.h>
#include <gst/gl/egl/gstglmemoryegl.h>
#include "nvbuf_utils.h"
static const char *
nv_buffer_payload_type_to_string (NvBufferPayloadType ptype)
{
switch (ptype) {
case NvBufferPayload_SurfArray:
return "SurfArray";
case NvBufferPayload_MemHandle:
return "MemHandle";
default:
return "<unknown>";
}
}
static const char *
nv_buffer_pixel_format_to_string (NvBufferColorFormat fmt)
{
switch (fmt) {
case NvBufferColorFormat_YUV420:
return "YUV420";
case NvBufferColorFormat_YVU420:
return "YVU420";
case NvBufferColorFormat_YUV422:
return "YUV422";
case NvBufferColorFormat_YUV420_ER:
return "YUV420_ER";
case NvBufferColorFormat_YVU420_ER:
return "YVU420_ER";
case NvBufferColorFormat_NV12:
return "NV12";
case NvBufferColorFormat_NV12_ER:
return "NV12_ER";
case NvBufferColorFormat_NV21:
return "NV21";
case NvBufferColorFormat_NV21_ER:
return "NV21_ER";
case NvBufferColorFormat_UYVY:
return "UYVY";
case NvBufferColorFormat_UYVY_ER:
return "UYVY_ER";
case NvBufferColorFormat_VYUY:
return "VYUY";
case NvBufferColorFormat_VYUY_ER:
return "VYUY_ER";
case NvBufferColorFormat_YUYV:
return "YUYV";
case NvBufferColorFormat_YUYV_ER:
return "YUYV_ER";
case NvBufferColorFormat_YVYU:
return "YVYU";
case NvBufferColorFormat_YVYU_ER:
return "YVYU_ER";
case NvBufferColorFormat_ABGR32:
return "ABGR32";
case NvBufferColorFormat_XRGB32:
return "XRGB32";
case NvBufferColorFormat_ARGB32:
return "ARGB32";
case NvBufferColorFormat_NV12_10LE:
return "NV12_10LE";
case NvBufferColorFormat_NV12_10LE_709:
return "NV12_10LE_709";
case NvBufferColorFormat_NV12_10LE_709_ER:
return "NV12_10LE_709_ER";
case NvBufferColorFormat_NV12_10LE_2020:
return "NV12_2020";
case NvBufferColorFormat_NV21_10LE:
return "NV21_10LE";
case NvBufferColorFormat_NV12_12LE:
return "NV12_12LE";
case NvBufferColorFormat_NV12_12LE_2020:
return "NV12_12LE_2020";
case NvBufferColorFormat_NV21_12LE:
return "NV21_12LE";
case NvBufferColorFormat_YUV420_709:
return "YUV420_709";
case NvBufferColorFormat_YUV420_709_ER:
return "YUV420_709_ER";
case NvBufferColorFormat_NV12_709:
return "NV12_709";
case NvBufferColorFormat_NV12_709_ER:
return "NV12_709_ER";
case NvBufferColorFormat_YUV420_2020:
return "YUV420_2020";
case NvBufferColorFormat_NV12_2020:
return "NV12_2020";
case NvBufferColorFormat_SignedR16G16:
return "SignedR16G16";
case NvBufferColorFormat_A32:
return "A32";
case NvBufferColorFormat_YUV444:
return "YUV444";
case NvBufferColorFormat_GRAY8:
return "GRAY8";
case NvBufferColorFormat_NV16:
return "NV16";
case NvBufferColorFormat_NV16_10LE:
return "NV16_10LE";
case NvBufferColorFormat_NV24:
return "NV24";
case NvBufferColorFormat_NV16_ER:
return "NV16_ER";
case NvBufferColorFormat_NV24_ER:
return "NV24_ER";
case NvBufferColorFormat_NV16_709:
return "NV16_709";
case NvBufferColorFormat_NV24_709:
return "NV24_709";
case NvBufferColorFormat_NV16_709_ER:
return "NV16_709_ER";
case NvBufferColorFormat_NV24_709_ER:
return "NV24_709_ER";
case NvBufferColorFormat_NV24_10LE_709:
return "NV24_10LE_709";
case NvBufferColorFormat_NV24_10LE_709_ER:
return "NV24_10LE_709_ER";
case NvBufferColorFormat_NV24_10LE_2020:
return "NV24_10LE_2020";
case NvBufferColorFormat_NV24_12LE_2020:
return "NV24_12LE_2020";
case NvBufferColorFormat_RGBA_10_10_10_2_709:
return "RGBA_10_10_10_2_709";
case NvBufferColorFormat_RGBA_10_10_10_2_2020:
return "RGBA_10_10_10_2_2020";
case NvBufferColorFormat_BGRA_10_10_10_2_709:
return "BGRA_10_10_10_2_709";
case NvBufferColorFormat_BGRA_10_10_10_2_2020:
return "BGRA_10_10_10_2_2020";
case NvBufferColorFormat_Invalid:
return "Invalid";
default:
return "<unknown>";
}
}
static void
nv_buffer_dump_params (GstObject * debug_object, NvBufferParamsEx * params)
{
GST_DEBUG_OBJECT (debug_object, "nvbuffer fd: %u size %i nv_buffer: %p of "
"size %u, payload: (0x%x) %s, pixel format: (0x%x) %s, n_planes: %u, "
"plane 0 { wxh: %ux%u, pitch: %u, offset: %u, psize: %u, layout: %u } "
"plane 1 { wxh: %ux%u, pitch: %u, offset: %u, psize: %u, layout: %u } "
"plane 2 { wxh: %ux%u, pitch: %u, offset: %u, psize: %u, layout: %u }",
params->params.dmabuf_fd, params->params.memsize,
params->params.nv_buffer, params->params.nv_buffer_size,
params->params.payloadType,
nv_buffer_payload_type_to_string (params->params.payloadType),
params->params.pixel_format,
nv_buffer_pixel_format_to_string (params->params.pixel_format),
params->params.num_planes, params->params.width[0],
params->params.height[0], params->params.pitch[0],
params->params.offset[0], params->params.psize[0],
params->params.offset[0], params->params.width[1],
params->params.height[1], params->params.pitch[1],
params->params.offset[1], params->params.psize[1],
params->params.offset[1], params->params.width[2],
params->params.height[2], params->params.pitch[2],
params->params.offset[2], params->params.psize[2],
params->params.offset[2]);
}
struct _GstMemoryNVMM
{
GstMemory parent;
int dmabuf_fd;
NvBufferParamsEx params;
};
typedef struct _GstMemoryNVMM GstMemoryNVMM;
struct _GstAllocatorNVMM
{
GstAllocator parent;
};
typedef struct _GstAllocatorNVMM GstAllocatorNVMM;
struct _GstAllocatorNVMMClass
{
GstAllocatorClass parent_class;
};
typedef struct _GstAllocatorNVMMClass GstAllocatorNVMMClass;
GType gst_allocator_nvmm_get_type (void);
G_DEFINE_TYPE (GstAllocatorNVMM, gst_allocator_nvmm, GST_TYPE_ALLOCATOR);
static gboolean
gst_memory_nvmm_init (GstMemoryNVMM * nvmm, GstMemoryFlags flags,
GstAllocator * allocator, GstMemory * parent, const GstVideoInfo * vinfo)
{
gsize size = NvBufferGetSize ();
NvBufferCreateParams create_params = {
.width = GST_VIDEO_INFO_WIDTH (vinfo),
.height = GST_VIDEO_INFO_HEIGHT (vinfo),
.payloadType = NvBufferPayload_SurfArray,
.memsize = GST_VIDEO_INFO_SIZE (vinfo),
.layout = NvBufferLayout_BlockLinear,
.colorFormat = NvBufferColorFormat_ABGR32,
.nvbuf_tag = NvBufferTag_NONE,
};
nvmm->dmabuf_fd = -1;
if (NvBufferCreateEx (&nvmm->dmabuf_fd, &create_params)) {
GST_WARNING_OBJECT (allocator, "Failed to create NvBuffer");
return FALSE;
}
if (NvBufferGetParamsEx (nvmm->dmabuf_fd, &nvmm->params)) {
GST_WARNING_OBJECT (allocator, "Failed to get NvBuffer params");
NvReleaseFd (nvmm->dmabuf_fd);
nvmm->dmabuf_fd = -1;
return FALSE;
}
nv_buffer_dump_params ((GstObject *) allocator, &nvmm->params);
gst_memory_init (&nvmm->parent, flags, allocator, parent, size, 0, 0, size);
return TRUE;
}
static gpointer
gst_memory_nvmm_map_full (GstMemory * mem, GstMapInfo * info, gsize size)
{
GstMemoryNVMM *nvmm = (GstMemoryNVMM *) mem;
GST_TRACE ("%p fd:%i map", mem, nvmm->dmabuf_fd);
// This is what the Nvidia elements do so...
return nvmm->params.params.nv_buffer;
}
static void
gst_memory_nvmm_unmap_full (GstMemory * mem, GstMapInfo * info)
{
GstMemoryNVMM *nvmm = (GstMemoryNVMM *) mem;
GST_TRACE ("%p fd:%i unmap", mem, nvmm->dmabuf_fd);
}
static GstMemory *
gst_memory_nvmm_copy (GstMemory * mem, gssize offset, gssize size)
{
return NULL;
}
static GstMemory *
gst_memory_nvmm_share (GstMemory * mem, gssize offset, gssize size)
{
return NULL;
}
static gboolean
gst_memory_nvmm_is_span (GstMemory * mem, GstMemory * mem2, gsize * offset)
{
return FALSE;
}
static gboolean
gst_is_memory_nvmm (GstMemory * mem)
{
return mem && mem->allocator
&& g_type_is_a (G_OBJECT_TYPE (mem->allocator),
gst_allocator_nvmm_get_type ());
}
static GstAllocator *_nvmm_allocator;
static void
init_nvmm_allocator (void)
{
static gsize _init = 0;
if (g_once_init_enter (&_init)) {
_nvmm_allocator = g_object_new (gst_allocator_nvmm_get_type (), NULL);
/* gst_allocator_register ("NvBuffer", _nvmm_allocator); */
GST_OBJECT_FLAG_SET (_nvmm_allocator, GST_OBJECT_FLAG_MAY_BE_LEAKED);
g_once_init_leave (&_init, 1);
}
}
static GstMemory *
gst_allocator_nvmm_alloc (const GstVideoInfo * info)
{
GstMemoryNVMM *nvmm = g_new0 (GstMemoryNVMM, 1);
init_nvmm_allocator ();
if (!gst_memory_nvmm_init (nvmm, 0, _nvmm_allocator, NULL, info)) {
g_free (nvmm);
return NULL;
}
return (GstMemory *) nvmm;
}
static GstMemory *
_gst_allocator_nvmm_alloc (GstAllocator * alloc, gsize size,
GstAllocationParams * params)
{
g_warning
("Can't allocate using gst_allocator_alloc(). Use gst_allocator_nvmm_alloc() instead");
return NULL;
}
static void
_gst_allocator_nvmm_free (GstAllocator * alloc, GstMemory * mem)
{
GstMemoryNVMM *nvmm = (GstMemoryNVMM *) mem;
if (nvmm->dmabuf_fd > 0)
NvReleaseFd (nvmm->dmabuf_fd);
nvmm->dmabuf_fd = -1;
g_free (nvmm);
}
static void
gst_allocator_nvmm_class_init (GstAllocatorNVMMClass * klass)
{
GstAllocatorClass *alloc_class = (GstAllocatorClass *) klass;
alloc_class->alloc = _gst_allocator_nvmm_alloc;
alloc_class->free = _gst_allocator_nvmm_free;
}
static void
gst_allocator_nvmm_init (GstAllocatorNVMM * nvmm)
{
GstAllocator *alloc = (GstAllocator *) nvmm;
alloc->mem_map_full = gst_memory_nvmm_map_full;
alloc->mem_unmap_full = gst_memory_nvmm_unmap_full;
alloc->mem_copy = gst_memory_nvmm_copy;
alloc->mem_share = gst_memory_nvmm_share;
alloc->mem_is_span = gst_memory_nvmm_is_span;
}
GType gst_nvmm_parent_meta_api_get_type (void);
#define GST_NVMM_PARENT_META_API_TYPE (gst_nvmm_parent_meta_api_get_type())
#define gst_buffer_get_nvmm_parent_meta(b) \
((GstNVMMParentMeta*)gst_buffer_get_meta((b),GST_NVMM_PARENT_META_API_TYPE))
const GstMetaInfo *gst_nvmm_parent_meta_get_info (void);
#define GST_NVMM_PARENT_META_INFO (gst_nvmm_parent_meta_get_info())
/* GstParentBufferMeta but supporting NULL and no copying to avoid accidentally
* introducing a circular reference when copying GstMeta's */
struct _GstNVMMParentMeta
{
GstMeta parent;
GstBuffer *buffer;
};
typedef struct _GstNVMMParentMeta GstNVMMParentMeta;
static GstNVMMParentMeta *
gst_buffer_add_nvmm_parent_meta (GstBuffer * buffer, GstBuffer * ref)
{
GstNVMMParentMeta *meta;
g_return_val_if_fail (GST_IS_BUFFER (ref), NULL);
meta =
(GstNVMMParentMeta *) gst_buffer_add_meta (buffer,
GST_NVMM_PARENT_META_INFO, NULL);
if (!meta)
return NULL;
if (ref)
meta->buffer = gst_buffer_ref (ref);
return meta;
}
static gboolean
_gst_nvmm_parent_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
return FALSE;
}
static void
_gst_nvmm_parent_meta_free (GstNVMMParentMeta * parent_meta, GstBuffer * buffer)
{
GST_DEBUG ("Dropping reference on buffer %p", parent_meta->buffer);
gst_clear_buffer (&parent_meta->buffer);
}
static gboolean
_gst_nvmm_parent_meta_init (GstNVMMParentMeta * parent_meta,
gpointer params, GstBuffer * buffer)
{
parent_meta->buffer = NULL;
return TRUE;
}
GType
gst_nvmm_parent_meta_api_get_type (void)
{
static GType type = 0;
static const gchar *tags[] = { GST_META_TAG_MEMORY_STR, NULL };
if (g_once_init_enter (&type)) {
GType _type = gst_meta_api_type_register ("GstNVMMParentMetaAPI", tags);
g_once_init_leave (&type, _type);
}
return type;
}
const GstMetaInfo *
gst_nvmm_parent_meta_get_info (void)
{
static const GstMetaInfo *meta_info = NULL;
if (g_once_init_enter ((GstMetaInfo **) & meta_info)) {
const GstMetaInfo *meta =
gst_meta_register (gst_nvmm_parent_meta_api_get_type (),
"GstNVMMParentMeta",
sizeof (GstNVMMParentMeta),
(GstMetaInitFunction) _gst_nvmm_parent_meta_init,
(GstMetaFreeFunction) _gst_nvmm_parent_meta_free,
_gst_nvmm_parent_meta_transform);
g_once_init_leave ((GstMetaInfo **) & meta_info, (GstMetaInfo *) meta);
}
return meta_info;
}
static GstMiniObjectDisposeFunction parent_gst_buffer_dispose = NULL;
static gboolean
gst_buffer_nvmm_dispose (GstMiniObject * obj)
{
GstBuffer *buf = (GstBuffer *) obj;
GstNVMMParentMeta *nv_buf_meta = gst_buffer_get_nvmm_parent_meta (buf);
GST_TRACE ("nvmm buffer dispose %p, parent_buf_meta %p", obj, nv_buf_meta);
if (nv_buf_meta && nv_buf_meta->buffer) {
GstNVMMParentMeta *gl_buf_meta;
gl_buf_meta = gst_buffer_get_nvmm_parent_meta (nv_buf_meta->buffer);
if (gl_buf_meta && !gl_buf_meta->buffer) {
// reattache the NVMM buffer to the parent buffer
GST_LOG ("readding nvmm buffer %p %i, to glmemory buffer %p %i", buf,
GST_MINI_OBJECT_REFCOUNT_VALUE (buf), nv_buf_meta->buffer,
GST_MINI_OBJECT_REFCOUNT_VALUE (nv_buf_meta->buffer));
gl_buf_meta->buffer = gst_buffer_ref (buf);
gst_clear_buffer (&nv_buf_meta->buffer);
return FALSE;
}
}
return parent_gst_buffer_dispose (obj);
}
struct _GstGLBufferPoolNVMMPrivate
{
GstGLVideoAllocationParams *gl_params;
};
typedef struct _GstGLBufferPoolNVMMPrivate GstGLBufferPoolNVMMPrivate;
struct _GstGLBufferPoolNVMM
{
GstGLBufferPool parent;
};
#define NVMM_POOL_GET_PRIV(obj) gst_gl_buffer_pool_nvmm_get_instance_private((GstGLBufferPoolNVMM *)(obj));
G_DECLARE_FINAL_TYPE (GstGLBufferPoolNVMM, gst_gl_buffer_pool_nvmm, GST,
GL_BUFFER_POOL_NVMM, GstGLBufferPool);
G_DEFINE_TYPE_WITH_CODE (GstGLBufferPoolNVMM, gst_gl_buffer_pool_nvmm,
GST_TYPE_GL_BUFFER_POOL, G_ADD_PRIVATE (GstGLBufferPoolNVMM));
static gboolean
gst_gl_buffer_pool_nvmm_set_config (GstBufferPool * pool, GstStructure * config)
{
GstGLBufferPoolNVMMPrivate *priv;
GstGLBufferPool *glpool = GST_GL_BUFFER_POOL (pool);
GstGLVideoAllocationParams *parent_gl_params;
GstCaps *caps = NULL;
GstVideoInfo vinfo;
GstAllocationParams alloc_params;
priv = NVMM_POOL_GET_PRIV (pool);
if (!gst_buffer_pool_config_get_allocator (config, NULL, &alloc_params))
goto wrong_config;
if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL))
goto wrong_config;
if (caps == NULL)
goto no_caps;
/* now parse the caps from the config */
if (!gst_video_info_from_caps (&vinfo, caps))
goto wrong_caps;
// TODO: fallback to regular GLMemory PBO/GetTexImage downloads?
if (GST_VIDEO_INFO_FORMAT (&vinfo) != GST_VIDEO_FORMAT_RGBA)
goto wrong_vformat;
if (!GST_BUFFER_POOL_CLASS (gst_gl_buffer_pool_nvmm_parent_class)->set_config
(pool, config))
return FALSE;
parent_gl_params = (GstGLVideoAllocationParams *)
gst_gl_buffer_pool_get_gl_allocation_params (glpool);
if (priv->gl_params)
gst_gl_allocation_params_free ((GstGLAllocationParams *) priv->gl_params);
priv->gl_params =
gst_gl_video_allocation_params_new_wrapped_gl_handle
(parent_gl_params->parent.context, parent_gl_params->parent.alloc_params,
parent_gl_params->v_info, 0, parent_gl_params->valign,
parent_gl_params->target, parent_gl_params->tex_format, NULL, NULL, NULL);
gst_buffer_pool_config_set_gl_allocation_params (config,
(GstGLAllocationParams *) priv->gl_params);
gst_gl_allocation_params_free ((GstGLAllocationParams *) parent_gl_params);
if (!GST_BUFFER_POOL_CLASS (gst_gl_buffer_pool_nvmm_parent_class)->set_config
(pool, config))
return FALSE;
return TRUE;
wrong_config:
{
GST_WARNING_OBJECT (pool, "invalid config");
return FALSE;
}
no_caps:
{
GST_WARNING_OBJECT (pool, "no caps in config");
return FALSE;
}
wrong_caps:
{
GST_WARNING_OBJECT (pool,
"failed getting geometry from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
wrong_vformat:
{
GST_WARNING_OBJECT (pool, "This pool only deals with RGBA textures");
return FALSE;
}
}
static void
nv_buffer_egl_image_mem_unref (GstEGLImage * image, GstMemory * mem)
{
GstGLDisplayEGL *egl_display = NULL;
EGLDisplay display;
egl_display = gst_gl_display_egl_from_gl_display (image->context->display);
if (!egl_display) {
GST_ERROR ("Could not retrieve GstGLDisplayEGL from GstGLDisplay");
return;
}
display =
(EGLDisplay) gst_gl_display_get_handle (GST_GL_DISPLAY (egl_display));
if (NvDestroyEGLImage (display, image->image)) {
GST_ERROR ("Failed to destroy EGLImage %p from NvBuffer", image->image);
} else {
GST_DEBUG ("destroyed EGLImage %p from NvBuffer", image->image);
}
gst_memory_unref (mem);
gst_object_unref (egl_display);
}
static GstFlowReturn
gst_gl_buffer_pool_nvmm_alloc (GstBufferPool * pool, GstBuffer ** outbuf,
GstBufferPoolAcquireParams * acquire_params)
{
GstGLBufferPool *gl_pool = GST_GL_BUFFER_POOL (pool);
GstGLBufferPoolNVMMPrivate *priv;
GstFlowReturn ret = GST_FLOW_ERROR;
GstBuffer *downstream_buf = NULL;
GstMapInfo in_map_info = GST_MAP_INFO_INIT;
GstGLDisplayEGL *egl_display = NULL;
GstEGLImage *eglimage = NULL;
EGLDisplay display = EGL_NO_DISPLAY;
EGLImageKHR image = EGL_NO_IMAGE;
GstGLMemoryAllocator *allocator = NULL;
GstMemory *nvmm_mem = NULL;
int in_dmabuf_fd;
priv = NVMM_POOL_GET_PRIV (pool);
*outbuf = NULL;
downstream_buf = gst_buffer_new ();
if (!parent_gst_buffer_dispose)
parent_gst_buffer_dispose = ((GstMiniObject *) downstream_buf)->dispose;
((GstMiniObject *) downstream_buf)->dispose = gst_buffer_nvmm_dispose;
nvmm_mem = gst_allocator_nvmm_alloc (priv->gl_params->v_info);
if (!nvmm_mem) {
GST_WARNING_OBJECT (pool, "Failed to create NVMM GstMemory");
return GST_FLOW_ERROR;
}
gst_buffer_append_memory (downstream_buf, nvmm_mem);
in_dmabuf_fd = ((GstMemoryNVMM *) nvmm_mem)->dmabuf_fd;
egl_display = gst_gl_display_egl_from_gl_display (gl_pool->context->display);
if (!egl_display) {
GST_WARNING ("Failed to retrieve GstGLDisplayEGL from GstGLDisplay");
goto done;
}
display =
(EGLDisplay) gst_gl_display_get_handle (GST_GL_DISPLAY (egl_display));
image = NvEGLImageFromFd (display, in_dmabuf_fd);
if (!image) {
GST_DEBUG_OBJECT (pool, "Failed construct EGLImage "
"from NvBuffer fd %i", in_dmabuf_fd);
goto done;
}
GST_DEBUG_OBJECT (pool, "constructed EGLImage %p "
"from NvBuffer fd %i", image, in_dmabuf_fd);
eglimage = gst_egl_image_new_wrapped (gl_pool->context, image,
GST_GL_RGBA, gst_memory_ref (nvmm_mem),
(GstEGLImageDestroyNotify) nv_buffer_egl_image_mem_unref);
if (!eglimage) {
GST_WARNING_OBJECT (pool, "Failed to wrap constructed "
"EGLImage from NvBuffer");
goto done;
}
gst_buffer_unmap (downstream_buf, &in_map_info);
in_map_info = (GstMapInfo) GST_MAP_INFO_INIT;
allocator =
GST_GL_MEMORY_ALLOCATOR (gst_allocator_find
(GST_GL_MEMORY_EGL_ALLOCATOR_NAME));
/* TODO: buffer pool */
*outbuf = gst_buffer_new ();
if (!gst_gl_memory_setup_buffer (allocator, *outbuf, priv->gl_params,
NULL, (gpointer *) & eglimage, 1)) {
GST_WARNING_OBJECT (pool, "Failed to setup NVMM -> EGLImage buffer");
goto done;
}
gst_egl_image_unref (eglimage);
/* TODO: NvBuffer has some sync functions that may be more useful here */
{
GstGLSyncMeta *sync_meta;
sync_meta = gst_buffer_add_gl_sync_meta (gl_pool->context, *outbuf);
if (sync_meta) {
gst_gl_sync_meta_set_sync_point (sync_meta, gl_pool->context);
}
}
// possible circular reference here
gst_buffer_add_nvmm_parent_meta (*outbuf, downstream_buf);
gst_buffer_unref (downstream_buf);
ret = GST_FLOW_OK;
done:
if (in_map_info.memory)
gst_buffer_unmap (downstream_buf, &in_map_info);
gst_clear_object (&egl_display);
gst_clear_object (&allocator);
return ret;
}
static void
gst_gl_buffer_pool_nvmm_finalize (GObject * object)
{
GstGLBufferPoolNVMMPrivate *priv = NVMM_POOL_GET_PRIV (object);
if (priv->gl_params)
gst_gl_allocation_params_free ((GstGLAllocationParams *) priv->gl_params);
priv->gl_params = NULL;
G_OBJECT_CLASS (gst_gl_buffer_pool_nvmm_parent_class)->finalize (object);
}
static void
gst_gl_buffer_pool_nvmm_init (GstGLBufferPoolNVMM * pool)
{
}
static void
gst_gl_buffer_pool_nvmm_class_init (GstGLBufferPoolNVMMClass * klass)
{
GstBufferPoolClass *pool_class = (GstBufferPoolClass *) klass;
GObjectClass *gobject_class = (GObjectClass *) klass;
pool_class->set_config = gst_gl_buffer_pool_nvmm_set_config;
pool_class->alloc_buffer = gst_gl_buffer_pool_nvmm_alloc;
gobject_class->finalize = gst_gl_buffer_pool_nvmm_finalize;
}
static GstBufferPool *
gst_gl_buffer_pool_nvmm_new (GstGLContext * context)
{
GstGLBufferPoolNVMM *pool;
GstGLBufferPool *gl_pool;
pool = g_object_new (gst_gl_buffer_pool_nvmm_get_type (), NULL);
gst_object_ref_sink (pool);
gl_pool = GST_GL_BUFFER_POOL (pool);
gl_pool->context = gst_object_ref (context);
GST_LOG_OBJECT (pool, "new NVMM GL buffer pool for context %" GST_PTR_FORMAT,
context);
return GST_BUFFER_POOL_CAST (pool);
}
#endif /* GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM) */
#define gst_gl_download_element_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGLDownloadElement, gst_gl_download_element,
GST_TYPE_GL_BASE_FILTER,
GST_DEBUG_CATEGORY_INIT (gst_gl_download_element_debug, "gldownloadelement",
0, "download element"););
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (gldownload, "gldownload",
GST_RANK_NONE, GST_TYPE_GL_DOWNLOAD_ELEMENT, gl_element_init (plugin));
static gboolean gst_gl_download_element_start (GstBaseTransform * bt);
static gboolean gst_gl_download_element_stop (GstBaseTransform * bt);
static gboolean gst_gl_download_element_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, gsize * size);
static GstCaps *gst_gl_download_element_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
static GstCaps *gst_gl_download_element_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static gboolean gst_gl_download_element_set_caps (GstBaseTransform * bt,
GstCaps * in_caps, GstCaps * out_caps);
static GstFlowReturn
gst_gl_download_element_prepare_output_buffer (GstBaseTransform * bt,
GstBuffer * buffer, GstBuffer ** outbuf);
static GstFlowReturn gst_gl_download_element_transform (GstBaseTransform * bt,
GstBuffer * buffer, GstBuffer * outbuf);
static gboolean gst_gl_download_element_transform_meta (GstBaseTransform * bt,
GstBuffer * outbuf, GstMeta * meta, GstBuffer * inbuf);
static gboolean gst_gl_download_element_decide_allocation (GstBaseTransform *
trans, GstQuery * query);
static gboolean gst_gl_download_element_sink_event (GstBaseTransform * bt,
GstEvent * event);
static gboolean gst_gl_download_element_src_event (GstBaseTransform * bt,
GstEvent * event);
static gboolean gst_gl_download_element_propose_allocation (GstBaseTransform *
bt, GstQuery * decide_query, GstQuery * query);
static void gst_gl_download_element_finalize (GObject * object);
#define GST_CAPS_FEATURE_MEMORY_NVMM "memory:NVMM"
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
#define EXTRA_CAPS_TEMPLATE1 "video/x-raw(" GST_CAPS_FEATURE_MEMORY_NVMM "), format=(string)RGBA; "
#else
#define EXTRA_CAPS_TEMPLATE1
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
#define EXTRA_CAPS_TEMPLATE2 "video/x-raw(" GST_CAPS_FEATURE_MEMORY_DMABUF "); "
#else
#define EXTRA_CAPS_TEMPLATE2
#endif
static GstStaticPadTemplate gst_gl_download_element_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (EXTRA_CAPS_TEMPLATE1 EXTRA_CAPS_TEMPLATE2
"video/x-raw; video/x-raw(memory:GLMemory)"));
static GstStaticPadTemplate gst_gl_download_element_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw(memory:GLMemory); video/x-raw"));
static void
gst_gl_download_element_class_init (GstGLDownloadElementClass * klass)
{
GstBaseTransformClass *bt_class = GST_BASE_TRANSFORM_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
bt_class->start = gst_gl_download_element_start;
bt_class->stop = gst_gl_download_element_stop;
bt_class->transform_caps = gst_gl_download_element_transform_caps;
bt_class->fixate_caps = gst_gl_download_element_fixate_caps;
bt_class->set_caps = gst_gl_download_element_set_caps;
bt_class->get_unit_size = gst_gl_download_element_get_unit_size;
bt_class->prepare_output_buffer =
gst_gl_download_element_prepare_output_buffer;
bt_class->transform = gst_gl_download_element_transform;
bt_class->decide_allocation = gst_gl_download_element_decide_allocation;
bt_class->sink_event = gst_gl_download_element_sink_event;
bt_class->src_event = gst_gl_download_element_src_event;
bt_class->propose_allocation = gst_gl_download_element_propose_allocation;
bt_class->transform_meta = gst_gl_download_element_transform_meta;
bt_class->passthrough_on_same_caps = TRUE;
gst_element_class_add_static_pad_template (element_class,
&gst_gl_download_element_src_pad_template);
gst_element_class_add_static_pad_template (element_class,
&gst_gl_download_element_sink_pad_template);
gst_element_class_set_metadata (element_class,
"OpenGL downloader", "Filter/Video",
"Downloads data from OpenGL", "Matthew Waters <matthew@centricular.com>");
object_class->finalize = gst_gl_download_element_finalize;
}
static void
gst_gl_download_element_init (GstGLDownloadElement * download)
{
gst_base_transform_set_prefer_passthrough (GST_BASE_TRANSFORM (download),
TRUE);
}
static gboolean
gst_gl_download_element_start (GstBaseTransform * bt)
{
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
dl->dmabuf_allocator = gst_dmabuf_allocator_new ();
g_atomic_int_set (&dl->try_dmabuf_exports, TRUE);
#endif
return TRUE;
}
static gboolean
gst_gl_download_element_stop (GstBaseTransform * bt)
{
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
if (dl->dmabuf_allocator) {
gst_object_unref (GST_OBJECT (dl->dmabuf_allocator));
dl->dmabuf_allocator = NULL;
}
return TRUE;
}
static gboolean
gst_gl_download_element_set_caps (GstBaseTransform * bt, GstCaps * in_caps,
GstCaps * out_caps)
{
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
GstVideoInfo out_info;
GstCapsFeatures *features = NULL;
if (!gst_video_info_from_caps (&out_info, out_caps))
return FALSE;
features = gst_caps_get_features (out_caps, 0);
if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_GL_MEMORY)) {
dl->mode = GST_GL_DOWNLOAD_MODE_PASSTHROUGH;
GST_INFO_OBJECT (dl, "caps signal passthrough");
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
} else if (gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_NVMM)) {
dl->mode = GST_GL_DOWNLOAD_MODE_NVMM;
GST_INFO_OBJECT (dl, "caps signal NVMM");
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
} else if (g_atomic_int_get (&dl->try_dmabuf_exports) &&
gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_DMABUF)) {
dl->mode = GST_GL_DOWNLOAD_MODE_DMABUF_EXPORTS;
GST_INFO_OBJECT (dl, "caps signal dma-buf export");
#endif
} else {
/* System Memory */
dl->mode = GST_GL_DOWNLOAD_MODE_PBO_TRANSFERS;
GST_INFO_OBJECT (dl, "caps signal sysmem download");
}
return TRUE;
}
static GstCaps *
_set_caps_features (const GstCaps * caps, const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++)
gst_caps_set_features (tmp, i,
gst_caps_features_from_string (feature_name));
return tmp;
}
static void
_remove_field (GstCaps * caps, const gchar * field)
{
guint n = gst_caps_get_size (caps);
guint i = 0;
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (caps, i);
gst_structure_remove_field (s, field);
}
}
static GstCaps *
gst_gl_download_element_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *result, *tmp;
if (direction == GST_PAD_SRC) {
GstCaps *sys_caps = gst_caps_simplify (_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY));
tmp = _set_caps_features (sys_caps, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
tmp = gst_caps_merge (tmp, sys_caps);
} else {
GstCaps *newcaps;
tmp = gst_caps_ref (caps);
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_NVMM);
_remove_field (newcaps, "texture-target");
// FIXME: RGBA-only?
tmp = gst_caps_merge (tmp, newcaps);
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_DMABUF);
_remove_field (newcaps, "texture-target");
tmp = gst_caps_merge (tmp, newcaps);
#endif
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
_remove_field (newcaps, "texture-target");
tmp = gst_caps_merge (tmp, newcaps);
}
if (filter) {
result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (tmp);
} else {
result = tmp;
}
GST_DEBUG_OBJECT (bt, "returning caps %" GST_PTR_FORMAT, result);
return result;
}
static GstCaps *
gst_gl_download_element_fixate_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
/* Remove DMABuf features if try_dmabuf_exports is not set */
if (direction == GST_PAD_SINK && !g_atomic_int_get (&dl->try_dmabuf_exports)) {
gint i;
for (i = 0; i < gst_caps_get_size (othercaps); i++) {
GstCapsFeatures *features = gst_caps_get_features (othercaps, i);
if (features && gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_DMABUF)) {
caps = gst_caps_make_writable (othercaps);
gst_caps_remove_structure (othercaps, i--);
}
}
}
#endif
return GST_BASE_TRANSFORM_CLASS (parent_class)->fixate_caps (bt, direction,
caps, othercaps);
}
static gboolean
gst_gl_download_element_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
gsize * size)
{
gboolean ret = FALSE;
GstVideoInfo info;
ret = gst_video_info_from_caps (&info, caps);
if (ret)
*size = GST_VIDEO_INFO_SIZE (&info);
return TRUE;
}
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
struct DmabufInfo
{
GstMemory *dmabuf;
gint stride;
gsize offset;
};
static void
_free_dmabuf_info (struct DmabufInfo *info)
{
gst_memory_unref (info->dmabuf);
g_free (info);
}
static GQuark
_dmabuf_info_quark (void)
{
static GQuark quark = 0;
if (!quark)
quark = g_quark_from_static_string ("GstGLDownloadDmabufInfo");
return quark;
}
static struct DmabufInfo *
_get_cached_dmabuf_info (GstGLMemory * mem)
{
return gst_mini_object_get_qdata (GST_MINI_OBJECT (mem),
_dmabuf_info_quark ());
}
static void
_set_cached_dmabuf_info (GstGLMemory * mem, struct DmabufInfo *info)
{
return gst_mini_object_set_qdata (GST_MINI_OBJECT (mem),
_dmabuf_info_quark (), info, (GDestroyNotify) _free_dmabuf_info);
}
struct DmabufTransfer
{
GstGLDownloadElement *download;
GstGLMemory *glmem;
struct DmabufInfo *info;
};
static void
_create_cached_dmabuf_info (GstGLContext * context, gpointer data)
{
struct DmabufTransfer *transfer = (struct DmabufTransfer *) data;
GstEGLImage *image;
image = gst_egl_image_from_texture (context, transfer->glmem, NULL);
if (image) {
int fd;
gint stride;
gsize offset;
if (gst_egl_image_export_dmabuf (image, &fd, &stride, &offset)) {
GstGLDownloadElement *download = transfer->download;
struct DmabufInfo *info;
gsize size;
size =
gst_gl_memory_get_texture_height (transfer->glmem) * stride + offset;
info = g_new0 (struct DmabufInfo, 1);
info->dmabuf =
gst_dmabuf_allocator_alloc (download->dmabuf_allocator, fd, size);
info->stride = stride;
info->offset = offset;
transfer->info = info;
}
gst_egl_image_unref (image);
}
}
static GstBuffer *
_try_export_dmabuf (GstGLDownloadElement * download, GstBuffer * inbuf)
{
GstGLMemory *glmem;
GstBuffer *buffer = NULL;
int i;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
GstCaps *src_caps;
GstVideoInfo out_info;
gsize total_offset;
2019-07-23 06:19:07 +00:00
GstVideoAlignment *alig = NULL;
glmem = GST_GL_MEMORY_CAST (gst_buffer_peek_memory (inbuf, 0));
if (glmem) {
GstGLContext *context = GST_GL_BASE_MEMORY_CAST (glmem)->context;
if (gst_gl_context_get_gl_platform (context) != GST_GL_PLATFORM_EGL)
return NULL;
2019-07-23 06:19:07 +00:00
alig = &glmem->valign;
}
buffer = gst_buffer_new ();
total_offset = 0;
for (i = 0; i < gst_buffer_n_memory (inbuf); i++) {
struct DmabufInfo *info;
glmem = GST_GL_MEMORY_CAST (gst_buffer_peek_memory (inbuf, i));
info = _get_cached_dmabuf_info (glmem);
if (!info) {
GstGLContext *context = GST_GL_BASE_MEMORY_CAST (glmem)->context;
struct DmabufTransfer transfer;
transfer.download = download;
transfer.glmem = glmem;
transfer.info = NULL;
gst_gl_context_thread_add (context, _create_cached_dmabuf_info,
&transfer);
info = transfer.info;
if (info)
_set_cached_dmabuf_info (glmem, info);
}
if (info) {
offset[i] = total_offset + info->offset;
stride[i] = info->stride;
total_offset += gst_memory_get_sizes (info->dmabuf, NULL, NULL);
gst_buffer_insert_memory (buffer, -1, gst_memory_ref (info->dmabuf));
} else {
gst_buffer_unref (buffer);
buffer = NULL;
goto export_complete;
}
}
src_caps = gst_pad_get_current_caps (GST_BASE_TRANSFORM (download)->srcpad);
gst_video_info_from_caps (&out_info, src_caps);
gst_caps_unref (src_caps);
if (download->add_videometa) {
2019-07-23 06:19:07 +00:00
GstVideoMeta *meta;
meta = gst_buffer_add_video_meta_full (buffer, GST_VIDEO_FRAME_FLAG_NONE,
out_info.finfo->format, out_info.width, out_info.height,
out_info.finfo->n_planes, offset, stride);
2019-07-23 06:19:07 +00:00
if (alig)
gst_video_meta_set_alignment (meta, *alig);
} else {
int i;
gboolean match = TRUE;
for (i = 0; i < gst_buffer_n_memory (inbuf); i++) {
if (offset[i] != out_info.offset[i] || stride[i] != out_info.stride[i]) {
match = FALSE;
break;
}
}
if (!match) {
gst_buffer_unref (buffer);
buffer = NULL;
}
}
export_complete:
return buffer;
}
#endif /* GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF */
static GstFlowReturn
gst_gl_download_element_prepare_output_buffer (GstBaseTransform * bt,
GstBuffer * inbuf, GstBuffer ** outbuf)
{
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
GstBaseTransformClass *bclass = GST_BASE_TRANSFORM_GET_CLASS (bt);
GstGLContext *context = GST_GL_BASE_FILTER (bt)->context;
GstGLSyncMeta *in_sync_meta;
gint i, n;
*outbuf = inbuf;
(void) bclass;
in_sync_meta = gst_buffer_get_gl_sync_meta (inbuf);
if (in_sync_meta) {
if (context) {
gst_gl_sync_meta_wait (in_sync_meta, context);
} else if (dl->mode != GST_GL_DOWNLOAD_MODE_PASSTHROUGH) {
GST_WARNING_OBJECT (dl, "No configured GL context in non-passthrough "
"mode. Cannot wait on incoming `GstGLSyncMeta`");
}
}
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
if (dl->mode == GST_GL_DOWNLOAD_MODE_NVMM) {
GstNVMMParentMeta *buf_meta = gst_buffer_get_nvmm_parent_meta (inbuf);
GstMemory *mem;
GstMemoryNVMM *nvmm_mem;
if (!buf_meta || !buf_meta->buffer) {
// TODO: remove this restriction with an e.g. copy...
GST_ERROR_OBJECT (dl,
"Cannot push upstream created buffer when outputting NVMM");
return GST_FLOW_ERROR;
}
if (!(mem = gst_buffer_peek_memory (buf_meta->buffer, 0))) {
GST_ERROR_OBJECT (dl, "No memory in buffer?");
return GST_FLOW_ERROR;
}
if (!gst_is_memory_nvmm (mem)) {
GST_ERROR_OBJECT (dl,
"Upstream buffer does not contain an attached NVMM GstMemory");
return GST_FLOW_ERROR;
}
nvmm_mem = (GstMemoryNVMM *) mem;
/* switch up the parent buffer references so that when the NVMM buffer is
* released, the associated EGLImage/OpenGL texture is as well
*/
GST_DEBUG_OBJECT (dl, "NVMM buffer fd:%i passed through %" GST_PTR_FORMAT,
nvmm_mem->dmabuf_fd, buf_meta->buffer);
*outbuf = buf_meta->buffer;
bclass->copy_metadata (bt, inbuf, *outbuf);
buf_meta->buffer = NULL;
buf_meta = gst_buffer_get_nvmm_parent_meta (*outbuf);
if (!buf_meta) {
buf_meta = gst_buffer_add_nvmm_parent_meta (*outbuf, inbuf);
} else {
gst_clear_buffer (&buf_meta->buffer);
buf_meta->buffer = gst_buffer_ref (inbuf);
}
return GST_FLOW_OK;
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
if (dl->mode == GST_GL_DOWNLOAD_MODE_DMABUF_EXPORTS) {
GstBuffer *buffer = _try_export_dmabuf (dl, inbuf);
if (buffer) {
if (GST_BASE_TRANSFORM_GET_CLASS (bt)->copy_metadata) {
if (!GST_BASE_TRANSFORM_GET_CLASS (bt)->copy_metadata (bt, inbuf,
buffer)) {
GST_ELEMENT_WARNING (GST_ELEMENT (bt), STREAM, NOT_IMPLEMENTED,
("could not copy metadata"), (NULL));
}
}
*outbuf = buffer;
} else {
GstCaps *src_caps;
GstCapsFeatures *features;
gboolean ret;
src_caps = gst_pad_get_current_caps (bt->srcpad);
src_caps = gst_caps_make_writable (src_caps);
features = gst_caps_get_features (src_caps, 0);
gst_caps_features_remove (features, GST_CAPS_FEATURE_MEMORY_DMABUF);
g_atomic_int_set (&dl->try_dmabuf_exports, FALSE);
dl->mode = GST_GL_DOWNLOAD_MODE_PBO_TRANSFERS;
ret = gst_base_transform_update_src_caps (bt, src_caps);
gst_caps_unref (src_caps);
if (!ret) {
GST_ERROR_OBJECT (bt, "DMABuf exportation didn't work and system "
"memory is not supported.");
return GST_FLOW_NOT_NEGOTIATED;
}
}
}
#endif
if (dl->mode == GST_GL_DOWNLOAD_MODE_PBO_TRANSFERS) {
n = gst_buffer_n_memory (*outbuf);
for (i = 0; i < n; i++) {
GstMemory *mem = gst_buffer_peek_memory (*outbuf, i);
if (gst_is_gl_memory_pbo (mem))
gst_gl_memory_pbo_download_transfer ((GstGLMemoryPBO *) mem);
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_gl_download_element_transform (GstBaseTransform * bt,
GstBuffer * inbuf, GstBuffer * outbuf)
{
return GST_FLOW_OK;
}
static gboolean
gst_gl_download_element_transform_meta (GstBaseTransform * bt,
GstBuffer * outbuf, GstMeta * meta, GstBuffer * inbuf)
{
if (g_type_is_a (meta->info->api, GST_GL_SYNC_META_API_TYPE)) {
GST_LOG_OBJECT (bt, "not copying GstGLSyncMeta onto output buffer");
return FALSE;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->transform_meta (bt, outbuf,
meta, inbuf);
}
static gboolean
gst_gl_download_element_decide_allocation (GstBaseTransform * trans,
GstQuery * query)
{
GstGLDownloadElement *download = GST_GL_DOWNLOAD_ELEMENT_CAST (trans);
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
download->add_videometa = TRUE;
} else {
download->add_videometa = FALSE;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
query);
}
static gboolean
gst_gl_download_element_sink_event (GstBaseTransform * bt, GstEvent * event)
{
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
/* Retry exporting whenever we have new caps from upstream */
if (GST_EVENT_TYPE (event) == GST_EVENT_CAPS)
g_atomic_int_set (&dl->try_dmabuf_exports, TRUE);
return GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (bt, event);
}
static gboolean
gst_gl_download_element_src_event (GstBaseTransform * bt, GstEvent * event)
{
GstGLDownloadElement *dl = GST_GL_DOWNLOAD_ELEMENT (bt);
/* Retry exporting whenever downstream have changed */
if (GST_EVENT_TYPE (event) == GST_EVENT_RECONFIGURE)
g_atomic_int_set (&dl->try_dmabuf_exports, TRUE);
return GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (bt, event);
}
static gboolean
gst_gl_download_element_propose_allocation (GstBaseTransform * bt,
GstQuery * decide_query, GstQuery * query)
{
GstBufferPool *pool = NULL;
GstCaps *caps;
GstGLContext *context;
GstStructure *config;
GstVideoInfo info;
gsize size;
if (!GST_BASE_TRANSFORM_CLASS (parent_class)->propose_allocation (bt,
decide_query, query))
return FALSE;
gst_query_parse_allocation (query, &caps, NULL);
if (caps == NULL)
goto invalid_caps;
context = GST_GL_BASE_FILTER (bt)->context;
if (!context) {
GST_ERROR_OBJECT (context, "got no GLContext");
return FALSE;
}
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
if (!pool && decide_query) {
GstCaps *decide_caps;
gst_query_parse_allocation (decide_query, &decide_caps, NULL);
if (decide_caps && gst_caps_get_size (decide_caps) > 0) {
GstCapsFeatures *features = gst_caps_get_features (decide_caps, 0);
if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_NVMM)) {
pool = gst_gl_buffer_pool_nvmm_new (context);
GST_INFO_OBJECT (bt, "have NVMM downstream, proposing NVMM "
"pool %" GST_PTR_FORMAT, pool);
}
}
}
#endif
if (!pool) {
pool = gst_gl_buffer_pool_new (context);
}
config = gst_buffer_pool_get_config (pool);
/* the normal size of a frame */
size = info.size;
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
gst_buffer_pool_config_set_gl_min_free_queue_size (config, 1);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_GL_SYNC_META);
if (!gst_buffer_pool_set_config (pool, config)) {
gst_object_unref (pool);
goto config_failed;
}
gst_query_add_allocation_pool (query, pool, size, 1, 0);
gst_object_unref (pool);
return TRUE;
invalid_caps:
{
GST_ERROR_OBJECT (bt, "Invalid Caps specified");
return FALSE;
}
config_failed:
{
GST_ERROR_OBJECT (bt, "failed setting config");
return FALSE;
}
}
static void
gst_gl_download_element_finalize (GObject * object)
{
GstGLDownloadElement *download = GST_GL_DOWNLOAD_ELEMENT_CAST (object);
if (download->dmabuf_allocator) {
gst_object_unref (GST_OBJECT (download->dmabuf_allocator));
download->dmabuf_allocator = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}