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meta: add cursor metadata and examples

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Add a moving and flashing circle cursor to video-src
Render the cursor in video-play
This commit is contained in:
Wim Taymans 2018-11-30 11:07:45 +01:00
parent 67a0b33dc8
commit cd53eca92b
3 changed files with 122 additions and 8 deletions
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23
spa/include/spa/buffer/meta.h
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@ -36,6 +36,7 @@ extern "C" {
#define SPA_TYPE_META__Header SPA_TYPE_META_BASE "Header"
#define SPA_TYPE_META__VideoCrop SPA_TYPE_META_BASE "VideoCrop"
#define SPA_TYPE_META__Cursor SPA_TYPE_META_BASE "Cursor"
/**
* A metadata element.
@ -84,6 +85,28 @@ struct spa_meta_control {
uint32_t offset; /**< offset in buffer memory */
};
/**
* Bitmap information
*/
struct spa_meta_bitmap {
uint32_t format; /**< bitmap video format */
uint32_t width, height; /**< width and height of bitmap */
uint32_t stride; /**< stride of bitmap data */
uint32_t size; /**< size of bitmap data */
uint32_t offset; /**< offset of bitmap data in this structure */
};
/**
* Cursor information
*/
struct spa_meta_cursor {
uint32_t id; /**< cursor id */
int32_t x, y; /**< offsets on screen */
int32_t hotspot_x, hotspot_y; /**< offsets for hotspot in bitmap */
uint32_t bitmap_offset; /**< offset of bitmap meta in this structure */
};
struct spa_type_meta {
uint32_t Header;
uint32_t VideoCrop;