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basetransform/basesrc: Do bufferpool configuration inside the default decide_allocation() implementation

Browse source 
This allows subclasses to override it, as is necessary for e.g. the
video-crop meta. It is now necessary that after decide_allocation()
there is always a allocator and a configured buffer pool inside the
query.
This commit is contained in:
Sebastian Dröge 2012-04-26 17:26:50 +02:00
parent 5c50c6612a
commit 105fa1ffde
2 changed files with 150 additions and 54 deletions
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109
libs/gst/base/gstbasesrc.c
View file

@ -314,6 +314,8 @@ static GstFlowReturn gst_base_src_default_create (GstBaseSrc * basesrc,
guint64 offset, guint size, GstBuffer ** buf);
static GstFlowReturn gst_base_src_default_alloc (GstBaseSrc * basesrc,
guint64 offset, guint size, GstBuffer ** buf);
static gboolean gst_base_src_decide_allocation_default (GstBaseSrc * basesrc,
GstQuery * query);
static gboolean gst_base_src_set_flushing (GstBaseSrc * basesrc,
gboolean flushing, gboolean live_play, gboolean unlock, gboolean * playing);
@ -385,6 +387,8 @@ gst_base_src_class_init (GstBaseSrcClass * klass)
klass->event = GST_DEBUG_FUNCPTR (gst_base_src_default_event);
klass->create = GST_DEBUG_FUNCPTR (gst_base_src_default_create);
klass->alloc = GST_DEBUG_FUNCPTR (gst_base_src_default_alloc);
klass->decide_allocation =
GST_DEBUG_FUNCPTR (gst_base_src_decide_allocation_default);
/* Registering debug symbols for function pointers */
GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_activate_mode);
@ -2784,6 +2788,68 @@ gst_base_src_activate_pool (GstBaseSrc * basesrc, gboolean active)
return res;
}
static gboolean
gst_base_src_decide_allocation_default (GstBaseSrc * basesrc, GstQuery * query)
{
GstCaps *outcaps;
GstBufferPool *pool;
guint size, min, max;
GstAllocator *allocator;
GstAllocationParams params;
GstStructure *config;
gboolean update_allocator;
gst_query_parse_allocation (query, &outcaps, NULL);
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
/* try the allocator */
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
update_allocator = TRUE;
} else {
allocator = NULL;
gst_allocation_params_init (&params);
update_allocator = FALSE;
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (pool == NULL) {
/* no pool, we can make our own */
GST_DEBUG_OBJECT (basesrc, "no pool, making new pool");
pool = gst_buffer_pool_new ();
}
} else {
pool = NULL;
size = min = max = 0;
}
/* now configure */
if (pool) {
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_set_config (pool, config);
}
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, allocator, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
if (allocator)
gst_allocator_unref (allocator);
if (pool) {
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
gst_object_unref (pool);
}
return TRUE;
}
static gboolean
gst_base_src_prepare_allocation (GstBaseSrc * basesrc, GstCaps * caps)
{
@ -2792,7 +2858,6 @@ gst_base_src_prepare_allocation (GstBaseSrc * basesrc, GstCaps * caps)
GstQuery *query;
GstBufferPool *pool = NULL;
GstAllocator *allocator = NULL;
guint size, min, max;
GstAllocationParams params;
bclass = GST_BASE_SRC_GET_CLASS (basesrc);
@ -2806,42 +2871,26 @@ gst_base_src_prepare_allocation (GstBaseSrc * basesrc, GstCaps * caps)
GST_DEBUG_OBJECT (basesrc, "peer ALLOCATION query failed");
}
if (G_LIKELY (bclass->decide_allocation))
result = bclass->decide_allocation (basesrc, query);
g_assert (bclass->decide_allocation != NULL);
result = bclass->decide_allocation (basesrc, query);
GST_DEBUG_OBJECT (basesrc, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
query);
if (!result)
goto no_decide_allocation;
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
/* try the allocator */
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
} else {
allocator = NULL;
gst_allocation_params_init (&params);
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (pool == NULL) {
/* no pool, just parameters, we can make our own */
GST_DEBUG_OBJECT (basesrc, "no pool, making new pool");
pool = gst_buffer_pool_new ();
}
} else {
pool = NULL;
size = min = max = 0;
}
/* now configure */
if (pool) {
GstStructure *config;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_set_config (pool, config);
}
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
result = gst_base_src_set_allocation (basesrc, pool, allocator, &params);
@ -2849,6 +2898,14 @@ gst_base_src_prepare_allocation (GstBaseSrc * basesrc, GstCaps * caps)
return result;
/* Errors */
no_decide_allocation:
{
GST_WARNING_OBJECT (basesrc, "Subclass failed to decide allocation");
gst_query_unref (query);
return result;
}
}
/* default negotiation code.

95
libs/gst/base/gstbasetransform.c
View file

@ -802,6 +802,13 @@ gst_base_transform_default_decide_allocation (GstBaseTransform * trans,
{
guint i, n_metas;
GstBaseTransformClass *klass;
GstCaps *outcaps;
GstBufferPool *pool;
guint size, min, max;
GstAllocator *allocator;
GstAllocationParams params;
GstStructure *config;
gboolean update_allocator;
klass = GST_BASE_TRANSFORM_GET_CLASS (trans);
@ -836,6 +843,54 @@ gst_base_transform_default_decide_allocation (GstBaseTransform * trans,
n_metas--;
}
}
gst_query_parse_allocation (query, &outcaps, NULL);
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
/* try the allocator */
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
update_allocator = TRUE;
} else {
allocator = NULL;
gst_allocation_params_init (&params);
update_allocator = FALSE;
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (pool == NULL) {
/* no pool, we can make our own */
GST_DEBUG_OBJECT (trans, "no pool, making new pool");
pool = gst_buffer_pool_new ();
}
} else {
pool = NULL;
size = min = max = 0;
}
/* now configure */
if (pool) {
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_set_config (pool, config);
}
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, allocator, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
if (allocator)
gst_allocator_unref (allocator);
if (pool) {
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
gst_object_unref (pool);
}
return TRUE;
}
@ -844,8 +899,7 @@ gst_base_transform_do_bufferpool (GstBaseTransform * trans, GstCaps * outcaps)
{
GstQuery *query;
gboolean result = TRUE;
GstBufferPool *pool;
guint size, min, max;
GstBufferPool *pool = NULL;
GstBaseTransformClass *klass;
GstBaseTransformPrivate *priv = trans->priv;
GstAllocator *allocator;
@ -882,43 +936,28 @@ gst_base_transform_do_bufferpool (GstBaseTransform * trans, GstCaps * outcaps)
klass = GST_BASE_TRANSFORM_GET_CLASS (trans);
GST_DEBUG_OBJECT (trans, "calling decide_allocation");
if (G_LIKELY (klass->decide_allocation))
if ((result = klass->decide_allocation (trans, query)) == FALSE)
goto no_decide_allocation;
g_assert (klass->decide_allocation != NULL);
result = klass->decide_allocation (trans, query);
GST_DEBUG_OBJECT (trans, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
query);
if (!result)
goto no_decide_allocation;
/* we got configuration from our peer or the decide_allocation method,
* parse them */
if (gst_query_get_n_allocation_params (query) > 0) {
/* try the allocator */
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
} else {
allocator = NULL;
gst_allocation_params_init (&params);
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, &pool, NULL, NULL, NULL);
if (pool == NULL) {
/* no pool, just parameters, we can make our own */
GST_DEBUG_OBJECT (trans, "no pool, making new pool");
pool = gst_buffer_pool_new ();
}
} else {
pool = NULL;
size = min = max = 0;
}
/* now configure */
if (pool) {
GstStructure *config;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
gst_buffer_pool_set_config (pool, config);
}
/* and store */
/* now store */
result =
gst_base_transform_set_allocation (trans, pool, allocator, &params,
query);