From 7151411b9cf74ce43ab56f0ff8577b8031b997d9 Mon Sep 17 00:00:00 2001 From: Lukasz Marek Date: Sun, 19 Jan 2014 16:11:09 +0100 Subject: lavd: add avdevice_app_to_dev_control_message API New API allows to send messages from application to devices. Signed-off-by: Lukasz Marek --- libavdevice/avdevice.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'libavdevice/avdevice.h') diff --git a/libavdevice/avdevice.h b/libavdevice/avdevice.h index 93a044f270..1bc91e4d0f 100644 --- a/libavdevice/avdevice.h +++ b/libavdevice/avdevice.h @@ -66,4 +66,56 @@ const char *avdevice_license(void); */ void avdevice_register_all(void); +typedef struct AVDeviceRect { + int x; /**< x coordinate of top left corner */ + int y; /**< y coordinate of top left corner */ + int width; /**< width */ + int height; /**< height */ +} AVDeviceRect; + +/** + * Message types used by avdevice_app_to_dev_control_message(). + */ +enum AVAppToDevMessageType { + /** + * Dummy message. + */ + AV_APP_TO_DEV_NONE = MKBETAG('N','O','N','E'), + + /** + * Window size change message. + * + * Message is sent to the device every time the application changes the size + * of the window device renders to. + * Message should also be sent right after window is created. + * + * data: AVDeviceRect: new window size. + */ + AV_APP_TO_DEV_WINDOW_SIZE = MKBETAG('G','E','O','M'), + + /** + * Repaint request message. + * + * Message is sent to the device when window have to be rapainted. + * + * data: AVDeviceRect: area required to be repainted. + * NULL: whole area is required to be repainted. + */ + AV_APP_TO_DEV_WINDOW_REPAINT = MKBETAG('R','E','P','A') +}; + +/** + * Send control message from application to device. + * + * @param s device context. + * @param type message type. + * @param data message data. Exact type depends on message type. + * @param data_size size of message data. + * @return >= 0 on success, negative on error. + * AVERROR(ENOSYS) when device doesn't implement handler of the message. + */ +int avdevice_app_to_dev_control_message(struct AVFormatContext *s, + enum AVAppToDevMessageType type, + void *data, size_t data_size); + #endif /* AVDEVICE_AVDEVICE_H */ -- cgit v1.2.3