diff options
Diffstat (limited to 'libs/gst/base/gstbasetransform.h')
| -rw-r--r-- | libs/gst/base/gstbasetransform.h | 94 |
1 files changed, 44 insertions, 50 deletions
diff --git a/libs/gst/base/gstbasetransform.h b/libs/gst/base/gstbasetransform.h index 16eed7a..1ebb9d9 100644 --- a/libs/gst/base/gstbasetransform.h +++ b/libs/gst/base/gstbasetransform.h @@ -77,26 +77,6 @@ G_BEGIN_DECLS */ #define GST_BASE_TRANSFORM_FLOW_DROPPED GST_FLOW_CUSTOM_SUCCESS -/** - * GST_BASE_TRANSFORM_LOCK: - * @obj: base transform instance - * - * Obtain a lock to protect the transform function from concurrent access. - * - * Since: 0.10.13 - */ -#define GST_BASE_TRANSFORM_LOCK(obj) g_mutex_lock (GST_BASE_TRANSFORM_CAST (obj)->transform_lock) - -/** - * GST_BASE_TRANSFORM_UNLOCK: - * @obj: base transform instance - * - * Release the lock that protects the transform function from concurrent access. - * - * Since: 0.10.13 - */ -#define GST_BASE_TRANSFORM_UNLOCK(obj) g_mutex_unlock (GST_BASE_TRANSFORM_CAST (obj)->transform_lock) - typedef struct _GstBaseTransform GstBaseTransform; typedef struct _GstBaseTransformClass GstBaseTransformClass; typedef struct _GstBaseTransformPrivate GstBaseTransformPrivate; @@ -114,25 +94,10 @@ struct _GstBaseTransform { GstPad *sinkpad; GstPad *srcpad; - /* Set by sub-class */ - gboolean passthrough; - gboolean always_in_place; - - GstCaps *cache_caps1; - gsize cache_caps1_size; - GstCaps *cache_caps2; - gsize cache_caps2_size; - gboolean have_same_caps; - - gboolean negotiated; - - gboolean have_segment; - /* MT-protected (with STREAM_LOCK) */ + gboolean have_segment; GstSegment segment; - GMutex *transform_lock; - /*< private >*/ GstBaseTransformPrivate *priv; @@ -142,13 +107,21 @@ struct _GstBaseTransform { /** * GstBaseTransformClass: * @parent_class: Element parent class - * @passthrough_on_same_caps: If set to TRUE, passthrough mode will be + * @passthrough_on_same_caps: If set to %TRUE, passthrough mode will be * automatically enabled if the caps are the same. + * Set to %FALSE by default. + * @transform_ip_on_passthrough: If set to %TRUE, @transform_ip will be called in + * passthrough mode. The passed buffer might not be + * writable. When %FALSE, neither @transform nor + * @transform_ip will be called in passthrough mode. + * Set to %TRUE by default. * @transform_caps: Optional. Given the pad in this direction and the given * caps, what caps are allowed on the other pad in this * element ? * @fixate_caps: Optional. Given the pad in this direction and the given - * caps, fixate the caps on the other pad. + * caps, fixate the caps on the other pad. The function takes + * ownership of @othercaps and returns a fixated version of + * @othercaps. @othercaps is not guaranteed to be writable. * @accept_caps: Optional. Since 0.10.30 * Subclasses can override this method to check if @caps can be * handled by the element. The default implementation might not be @@ -158,14 +131,25 @@ struct _GstBaseTransform { * Handle a requested query. Subclasses that implement this * should must chain up to the parent if they didn't handle the * query - * @propose_allocation: Propose buffer allocation parameters for upstream elements. - * This function is only called when not operating in - * passthrough mode. The default implementation is NULL. * @decide_allocation: Setup the allocation parameters for allocating output * buffers. The passed in query contains the result of the * downstream allocation query. This function is only called * when not operating in passthrough mode. The default - * implementation is NULL. + * implementation will remove all memory dependent metadata. + * If there is ia @filter_meta method implementation, it will + * be called for all metadata API in the downstream query, + * otherwise the metadata API is removed. + * @filter_meta: Return TRUE if the metadata API should be proposed in the + * upstream allocation query. The default implementation is NULL + * and will cause all metadata to be removed. + * @propose_allocation: Propose buffer allocation parameters for upstream elements. + * This function must be implemented if the element reads or + * writes the buffer content. The query that was passed to + * the decide_allocation is passed in this method (or NULL + * when the element is in passthrough mode). The default + * implementation will pass the query downstream when in + * passthrough mode and will copy all the filtered metadata + * API in non-passthrough mode. * @transform_size: Optional. Given the size of a buffer in the given direction * with the given caps, calculate the size in bytes of a buffer * on the other pad with the given other caps. @@ -198,6 +182,10 @@ struct _GstBaseTransform { * Copy the metadata from the input buffer to the output buffer. * The default implementation will copy the flags, timestamps and * offsets of the buffer. + * @transform_meta: Optional. Transform the metadata on the input buffer to the + * output buffer. By default this method is NULL and no + * metadata is copied. subclasses can implement this method and + * return TRUE if the metadata is to be copied. * @before_transform: Optional. Since 0.10.22 * This method is called right before the base class will * start processing. Dynamic properties or other delayed @@ -219,12 +207,13 @@ struct _GstBaseTransformClass { /*< public >*/ gboolean passthrough_on_same_caps; + gboolean transform_ip_on_passthrough; /* virtual methods for subclasses */ GstCaps* (*transform_caps) (GstBaseTransform *trans, GstPadDirection direction, GstCaps *caps, GstCaps *filter); - void (*fixate_caps) (GstBaseTransform *trans, + GstCaps* (*fixate_caps) (GstBaseTransform *trans, GstPadDirection direction, GstCaps *caps, GstCaps *othercaps); gboolean (*accept_caps) (GstBaseTransform *trans, GstPadDirection direction, @@ -234,10 +223,13 @@ struct _GstBaseTransformClass { gboolean (*query) (GstBaseTransform *trans, GstPadDirection direction, GstQuery *query); - /* propose allocation query parameters for input buffers */ - gboolean (*propose_allocation) (GstBaseTransform *trans, GstQuery *query); /* decide allocation query for output buffers */ - gboolean (*decide_allocation) (GstBaseTransform *trans, GstQuery *query); + gboolean (*decide_allocation) (GstBaseTransform *trans, GstQuery *query); + gboolean (*filter_meta) (GstBaseTransform *trans, GstQuery *query, GType api); + + /* propose allocation query parameters for input buffers */ + gboolean (*propose_allocation) (GstBaseTransform *trans, GstQuery *decide_query, + GstQuery *query); /* transform size */ gboolean (*transform_size) (GstBaseTransform *trans, @@ -259,8 +251,11 @@ struct _GstBaseTransformClass { GstFlowReturn (*prepare_output_buffer) (GstBaseTransform * trans, GstBuffer *input, GstBuffer **outbuf); - gboolean (*copy_metadata) (GstBaseTransform * trans, GstBuffer *input, + /* metadata */ + gboolean (*copy_metadata) (GstBaseTransform *trans, GstBuffer *input, GstBuffer *outbuf); + gboolean (*transform_meta) (GstBaseTransform *trans, GstBuffer *outbuf, + GstMeta *meta, GstBuffer *inbuf); void (*before_transform) (GstBaseTransform *trans, GstBuffer *buffer); @@ -294,9 +289,8 @@ gboolean gst_base_transform_is_qos_enabled (GstBaseTransform *trans); void gst_base_transform_set_gap_aware (GstBaseTransform *trans, gboolean gap_aware); -void gst_base_transform_suggest (GstBaseTransform *trans, - GstCaps *caps, gsize size); -void gst_base_transform_reconfigure (GstBaseTransform *trans); +void gst_base_transform_reconfigure_sink (GstBaseTransform *trans); +void gst_base_transform_reconfigure_src (GstBaseTransform *trans); G_END_DECLS #endif /* __GST_BASE_TRANSFORM_H__ */ |