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Add VA buffer helpers.

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This commit is contained in:
Gwenole Beauchesne 2011-08-04 17:29:41 +02:00
parent 9b9c049a67
commit e0913aaf0e
2 changed files with 93 additions and 0 deletions
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68
gst-libs/gst/vaapi/gstvaapiutils.c
View file

@ -47,6 +47,74 @@ vaapi_check_status(VAStatus status, const char *msg)
return TRUE; return TRUE;
} }
/* Maps VA buffer */
void *
vaapi_map_buffer(VADisplay dpy, VABufferID buf_id)
{
VAStatus status;
void *data = NULL;
status = vaMapBuffer(dpy, buf_id, &data);
if (!vaapi_check_status(status, "vaMapBuffer()"))
return NULL;
return data;
}
/* Unmaps VA buffer */
void
vaapi_unmap_buffer(VADisplay dpy, VABufferID buf_id, void **pbuf)
{
VAStatus status;
if (pbuf)
*pbuf = NULL;
status = vaUnmapBuffer(dpy, buf_id);
if (!vaapi_check_status(status, "vaUnmapBuffer()"))
return;
}
/* Creates and maps VA buffer */
void *
vaapi_create_buffer(
VADisplay dpy,
VAContextID ctx,
int type,
unsigned int size,
VABufferID *buf_id_ptr
)
{
VABufferID buf_id;
VAStatus status;
void *data;
status = vaCreateBuffer(dpy, ctx, type, size, 1, NULL, &buf_id);
if (!vaapi_check_status(status, "vaCreateBuffer()"))
return NULL;
data = vaapi_map_buffer(dpy, buf_id);
if (!data)
goto error;
*buf_id_ptr = buf_id;
return data;
error:
vaapi_destroy_buffer(dpy, &buf_id);
return NULL;
}
/* Destroy VA buffer */
void
vaapi_destroy_buffer(VADisplay dpy, VABufferID *buf_id_ptr)
{
if (!buf_id_ptr || *buf_id_ptr == VA_INVALID_ID)
return;
vaDestroyBuffer(dpy, *buf_id_ptr);
*buf_id_ptr = VA_INVALID_ID;
}
/* Return a string representation of a VAProfile */ /* Return a string representation of a VAProfile */
const char *string_of_VAProfile(VAProfile profile) const char *string_of_VAProfile(VAProfile profile)
{ {

25
gst-libs/gst/vaapi/gstvaapiutils.h
View file

@ -36,6 +36,31 @@ gboolean
vaapi_check_status(VAStatus status, const char *msg) vaapi_check_status(VAStatus status, const char *msg)
attribute_hidden; attribute_hidden;
/** Maps VA buffer */
void *
vaapi_map_buffer(VADisplay dpy, VABufferID buf_id)
attribute_hidden;
/** Unmaps VA buffer */
void
vaapi_unmap_buffer(VADisplay dpy, VABufferID buf_id, void **pbuf)
attribute_hidden;
/** Creates and maps VA buffer */
void *
vaapi_create_buffer(
VADisplay dpy,
VAContextID ctx,
int type,
unsigned int size,
VABufferID *buf_id
) attribute_hidden;
/** Destroy VA buffer */
void
vaapi_destroy_buffer(VADisplay dpy, VABufferID *buf_id)
attribute_hidden;
/** Return a string representation of a VAProfile */ /** Return a string representation of a VAProfile */
const char *string_of_VAProfile(VAProfile profile) const char *string_of_VAProfile(VAProfile profile)
attribute_hidden; attribute_hidden;