[FFmpeg-devel] [PATCH] lavd/avdevice: add control message enums

[Lukasz Marek]

Signed-off-by: Lukasz Marek <lukasz.m.luki2 at gmail.com>
---
 libavdevice/avdevice.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

diff --git a/libavdevice/avdevice.h b/libavdevice/avdevice.h
index 8b78067..b676934 100644
--- a/libavdevice/avdevice.h
+++ b/libavdevice/avdevice.h
@@ -109,6 +109,14 @@ typedef struct AVDeviceRect {
     int height; /**< height */
 } AVDeviceRect;
 
+typedef union AVDeviceValue {
+    u_int64_t u64;
+    int64_t i64;
+    double dbl;
+    const char *str;
+    AVRational q;
+} AVDeviceValue;
+
 /**
  * Message types used by avdevice_app_to_dev_control_message().
  */
@@ -137,7 +145,19 @@ enum AVAppToDevMessageType {
      * 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')
+    AV_APP_TO_DEV_WINDOW_REPAINT = MKBETAG('R','E','P','A'),
+
+    /**
+     * Request pause/play.
+     *
+     * Application requests pause/unpause playback.
+     * Mostly usable with devices that have internal buffer.
+     *
+     * data: NULL
+     */
+    AV_APP_TO_DEV_PAUSE = MKBETAG('P', 'A', 'U', ' '),
+    AV_APP_TO_DEV_PLAY = MKBETAG('P', 'L', 'A', 'Y'),
+    AV_APP_TO_DEV_TOGGLE_PAUSE = MKBETAG('P', 'A', 'U', 'T')
 };
 
 /**
@@ -196,7 +216,31 @@ enum AVDevToAppMessageType {
      *
      * data: NULL.
      */
-    AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER = MKBETAG('B','D','E','S')
+    AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER = MKBETAG('B','D','E','S'),
+
+    /**
+     * Buffer fullness status messages.
+     *
+     * Device signals buffer overflow/underflow.
+     *
+     * data: NULL.
+     */
+    AV_DEV_TO_APP_BUFFER_OVERFLOW = MKBETAG('B','O','F','L'),
+    AV_DEV_TO_APP_BUFFER_UNDERFLOW = MKBETAG('B','U','F','L'),
+
+    /**
+     * Buffer readable/writable.
+     *
+     * Device informs that buffer is readable/writable.
+     * When possible, device informs how many bytes can be read/write.
+     *
+     * @warning Device may not inform when number of bytes than can be read/write changes.
+     *
+     * data: AVDeviceValue(int64_t): amount of bytes available to read/write.
+     *       NULL: amount of bytes available to read/write is not known.
+     */
+    AV_DEV_TO_APP_BUFFER_READABLE = MKBETAG('B','R','D',' '),
+    AV_DEV_TO_APP_BUFFER_WRITABLE = MKBETAG('B','W','R',' ')
 };
 
 /**
-- 
1.8.3.2