stream_cb: add cancel_fn callback

This allows stream_cb backends to implement blocking
behavior inside read_fn, and still get notified when the user
wants to cancel and stop playback.

Signed-off-by: Aman Gupta <aman@tmm1.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/stream/stream_cb.c b/stream/stream_cb.c
index fa8871ddf6..fa52935a4b 100644
--- a/stream/stream_cb.c
+++ b/stream/stream_cb.c
@@ -17,9 +17,11 @@
 #include "options/path.h"
 #include "player/client.h"
 #include "libmpv/stream_cb.h"
+#include "misc/thread_tools.h"
 
 struct priv {
     mpv_stream_cb_info info;
+    struct mp_cancel *cancel;
 };
 
 static int fill_buffer(stream_t *s, char *buffer, int max_len)
@@ -98,6 +100,12 @@ static int open_cb(stream_t *stream)
     stream->read_chunk = 64 * 1024;
     stream->close = s_close;
 
+    if (p->info.cancel_fn && stream->cancel) {
+        p->cancel = mp_cancel_new(p);
+        mp_cancel_set_parent(p->cancel, stream->cancel);
+        mp_cancel_set_cb(p->cancel, p->info.cancel_fn, p->info.cookie);
+    }
+
     return STREAM_OK;
 }