mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-03 17:22:29 +00:00
v4l2: Move decide allocation into v4l2object
https://bugzilla.gnome.org/show_bug.cgi?id=720568
This commit is contained in:
Nicolas Dufresne
parent
34a8cb09c8
commit
3cf85c9083
3 changed files with 108 additions and 86 deletions
|
|
@ -3139,3 +3139,104 @@ gst_v4l2_object_get_caps (GstV4l2Object * v4l2object, GstCaps * filter)
|
|||
|
||||
return ret;
|
||||
}
|
||||
|
||||
gboolean
|
||||
gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
|
||||
{
|
||||
GstBufferPool *pool;
|
||||
guint size, min, max;
|
||||
gboolean update;
|
||||
|
||||
GST_DEBUG_OBJECT (obj->element, "decide allocation");
|
||||
|
||||
g_return_val_if_fail (obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
||||
obj->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, FALSE);
|
||||
|
||||
if (gst_query_get_n_allocation_pools (query) > 0) {
|
||||
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
||||
update = TRUE;
|
||||
} else {
|
||||
pool = NULL;
|
||||
min = max = 0;
|
||||
size = 0;
|
||||
update = FALSE;
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (obj->element, "allocation: size:%u min:%u max:%u pool:%"
|
||||
GST_PTR_FORMAT, size, min, max, pool);
|
||||
|
||||
if (min != 0) {
|
||||
/* if there is a min-buffers suggestion, use it. We add 1 because we need 1
|
||||
* buffer extra to capture while the other two buffers are downstream */
|
||||
min += 1;
|
||||
} else {
|
||||
min = 2;
|
||||
}
|
||||
|
||||
/* select a pool */
|
||||
switch (obj->mode) {
|
||||
case GST_V4L2_IO_RW:
|
||||
if (pool == NULL) {
|
||||
/* no downstream pool, use our own then */
|
||||
GST_DEBUG_OBJECT (obj->element,
|
||||
"read/write mode: no downstream pool, using our own");
|
||||
pool = GST_BUFFER_POOL_CAST (obj->pool);
|
||||
size = obj->sizeimage;
|
||||
} else {
|
||||
/* in READ/WRITE mode, prefer a downstream pool because our own pool
|
||||
* doesn't help much, we have to write to it as well */
|
||||
GST_DEBUG_OBJECT (obj->element,
|
||||
"read/write mode: using downstream pool");
|
||||
/* use the bigest size, when we use our own pool we can't really do any
|
||||
* other size than what the hardware gives us but for downstream pools
|
||||
* we can try */
|
||||
size = MAX (size, obj->sizeimage);
|
||||
}
|
||||
break;
|
||||
case GST_V4L2_IO_MMAP:
|
||||
case GST_V4L2_IO_USERPTR:
|
||||
case GST_V4L2_IO_DMABUF:
|
||||
/* in streaming mode, prefer our own pool */
|
||||
pool = GST_BUFFER_POOL_CAST (obj->pool);
|
||||
size = obj->sizeimage;
|
||||
GST_DEBUG_OBJECT (obj->element,
|
||||
"streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
|
||||
break;
|
||||
case GST_V4L2_IO_AUTO:
|
||||
default:
|
||||
GST_WARNING_OBJECT (obj->element, "unhandled mode");
|
||||
break;
|
||||
}
|
||||
|
||||
if (pool) {
|
||||
GstStructure *config;
|
||||
GstCaps *caps;
|
||||
|
||||
config = gst_buffer_pool_get_config (pool);
|
||||
gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL);
|
||||
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
||||
|
||||
/* if downstream supports video metadata, add this to the pool config */
|
||||
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
|
||||
GST_DEBUG_OBJECT (pool, "activate Video Meta");
|
||||
gst_buffer_pool_config_add_option (config,
|
||||
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
||||
}
|
||||
|
||||
gst_buffer_pool_set_config (pool, config);
|
||||
}
|
||||
|
||||
if (update)
|
||||
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
|
||||
else
|
||||
gst_query_add_allocation_pool (query, pool, size, min, max);
|
||||
|
||||
return TRUE;
|
||||
|
||||
pool_failed:
|
||||
{
|
||||
GST_ELEMENT_ERROR (obj->element, RESOURCE, SETTINGS,
|
||||
(_("Video device could not create buffer pool.")), GST_ERROR_SYSTEM);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -278,6 +278,8 @@ gboolean gst_v4l2_object_setup_format (GstV4l2Object * v4l2object,
|
|||
GstVideoInfo * info,
|
||||
GstVideoAlignment * align);
|
||||
|
||||
gboolean gst_v4l2_object_decide_allocation (GstV4l2Object * v4l2object,
|
||||
GstQuery * query);
|
||||
|
||||
|
||||
#define GST_IMPLEMENT_V4L2_PROBE_METHODS(Type_Class, interface_as_function) \
|
||||
|
|
|
|||
|
|
@ -464,94 +464,13 @@ gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps)
|
|||
static gboolean
|
||||
gst_v4l2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
|
||||
{
|
||||
GstV4l2Src *src;
|
||||
GstV4l2Object *obj;
|
||||
GstBufferPool *pool;
|
||||
guint size, min, max;
|
||||
gboolean update;
|
||||
GstV4l2Src *src = GST_V4L2SRC (bsrc);
|
||||
gboolean ret = FALSE;
|
||||
|
||||
src = GST_V4L2SRC (bsrc);
|
||||
obj = src->v4l2object;
|
||||
if (gst_v4l2_object_decide_allocation (src->v4l2object, query))
|
||||
ret = GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
|
||||
|
||||
if (gst_query_get_n_allocation_pools (query) > 0) {
|
||||
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
|
||||
update = TRUE;
|
||||
} else {
|
||||
pool = NULL;
|
||||
min = max = 0;
|
||||
size = 0;
|
||||
update = FALSE;
|
||||
}
|
||||
|
||||
GST_DEBUG_OBJECT (src, "allocation: size:%u min:%u max:%u pool:%"
|
||||
GST_PTR_FORMAT, size, min, max, pool);
|
||||
|
||||
if (min != 0) {
|
||||
/* if there is a min-buffers suggestion, use it. We add 1 because we need 1
|
||||
* buffer extra to capture while the other two buffers are downstream */
|
||||
min += 1;
|
||||
} else {
|
||||
min = 2;
|
||||
}
|
||||
|
||||
/* select a pool */
|
||||
switch (obj->mode) {
|
||||
case GST_V4L2_IO_RW:
|
||||
if (pool == NULL) {
|
||||
/* no downstream pool, use our own then */
|
||||
GST_DEBUG_OBJECT (src,
|
||||
"read/write mode: no downstream pool, using our own");
|
||||
pool = GST_BUFFER_POOL_CAST (obj->pool);
|
||||
size = obj->sizeimage;
|
||||
} else {
|
||||
/* in READ/WRITE mode, prefer a downstream pool because our own pool
|
||||
* doesn't help much, we have to write to it as well */
|
||||
GST_DEBUG_OBJECT (src, "read/write mode: using downstream pool");
|
||||
/* use the bigest size, when we use our own pool we can't really do any
|
||||
* other size than what the hardware gives us but for downstream pools
|
||||
* we can try */
|
||||
size = MAX (size, obj->sizeimage);
|
||||
}
|
||||
break;
|
||||
case GST_V4L2_IO_MMAP:
|
||||
case GST_V4L2_IO_USERPTR:
|
||||
case GST_V4L2_IO_DMABUF:
|
||||
/* in streaming mode, prefer our own pool */
|
||||
pool = GST_BUFFER_POOL_CAST (obj->pool);
|
||||
size = obj->sizeimage;
|
||||
GST_DEBUG_OBJECT (src,
|
||||
"streaming mode: using our own pool %" GST_PTR_FORMAT, pool);
|
||||
break;
|
||||
case GST_V4L2_IO_AUTO:
|
||||
default:
|
||||
GST_WARNING_OBJECT (src, "unhandled mode");
|
||||
break;
|
||||
}
|
||||
|
||||
if (pool) {
|
||||
GstStructure *config;
|
||||
GstCaps *caps;
|
||||
|
||||
config = gst_buffer_pool_get_config (pool);
|
||||
gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL);
|
||||
gst_buffer_pool_config_set_params (config, caps, size, min, max);
|
||||
|
||||
/* if downstream supports video metadata, add this to the pool config */
|
||||
if (gst_query_find_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL)) {
|
||||
GST_DEBUG_OBJECT (pool, "activate Video Meta");
|
||||
gst_buffer_pool_config_add_option (config,
|
||||
GST_BUFFER_POOL_OPTION_VIDEO_META);
|
||||
}
|
||||
|
||||
gst_buffer_pool_set_config (pool, config);
|
||||
}
|
||||
|
||||
if (update)
|
||||
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
|
||||
else
|
||||
gst_query_add_allocation_pool (query, pool, size, min, max);
|
||||
|
||||
return GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
|
|||
Loading…
Reference in a new issue