Request scan media on push

After a file is pushed, send a broadcast to request the media scanner to
scan the "push target" directory.

In practice, this allows some apps to detect the new file immediately.

app/src/compat.h

@@ -22,6 +22,18 @@
 # define SCRCPY_LAVF_REQUIRES_REGISTER_ALL
 #endif
 
+
+// In ffmpeg/doc/APIchanges:
+// 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
+//   Deprecate AVFormatContext filename field which had limited length, use the
+//   new dynamically allocated url field instead.
+//
+// 2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
+//   Add url field to AVFormatContext and add ff_format_set_url helper function.
+#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(58, 7, 100)
+# define SCRCPY_LAVF_HAS_AVFORMATCONTEXT_URL
+#endif
+
 #if SDL_VERSION_ATLEAST(2, 0, 5)
 // <https://wiki.libsdl.org/SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH>
 # define SCRCPY_SDL_HAS_HINT_MOUSE_FOCUS_CLICKTHROUGH

app/src/file_handler.c

@@ -4,6 +4,8 @@
 #include <string.h>
 
 #include "adb.h"
+#include "control_msg.h"
+#include "controller.h"
 #include "util/log.h"
 
 #define DEFAULT_PUSH_TARGET "/sdcard/"
@@ -14,7 +16,8 @@ file_handler_request_destroy(struct file_handler_request *req) {
 }
 
 bool
-file_handler_init(struct file_handler *file_handler, const char *serial,
+file_handler_init(struct file_handler *file_handler,
+                  struct controller *controller, const char *serial,
                   const char *push_target) {
 
     cbuf_init(&file_handler->queue);
@@ -50,6 +53,8 @@ file_handler_init(struct file_handler *file_handler, const char *serial,
 
     file_handler->push_target = push_target ? push_target : DEFAULT_PUSH_TARGET;
 
+    file_handler->controller = controller;
+
     return true;
 }
 
@@ -103,6 +108,24 @@ file_handler_request(struct file_handler *file_handler,
     return res;
 }
 
+static bool
+request_scan_media(struct file_handler *file_handler) {
+    struct control_msg msg;
+    msg.type = CONTROL_MSG_TYPE_SCAN_MEDIA;
+    msg.scan_media.path = strdup(file_handler->push_target);
+    if (!msg.scan_media.path) {
+        LOGW("Could not strdup() media path");
+        return false;
+    }
+
+    if (!controller_push_msg(file_handler->controller, &msg)) {
+        LOGW("Could not request 'scan media'");
+        return false;
+    }
+
+    return true;
+}
+
 static int
 run_file_handler(void *data) {
     struct file_handler *file_handler = data;
@@ -145,6 +168,7 @@ run_file_handler(void *data) {
             if (process_check_success(process, "adb push", false)) {
                 LOGI("%s successfully pushed to %s", req.file,
                                                      file_handler->push_target);
+                request_scan_media(file_handler);
             } else {
                 LOGE("Failed to push %s to %s", req.file,
                                                 file_handler->push_target);

app/src/file_handler.h

@@ -22,6 +22,7 @@ struct file_handler_request {
 struct file_handler_request_queue CBUF(struct file_handler_request, 16);
 
 struct file_handler {
+    struct controller *controller;
     char *serial;
     const char *push_target;
     sc_thread thread;
@@ -34,7 +35,8 @@ struct file_handler {
 };
 
 bool
-file_handler_init(struct file_handler *file_handler, const char *serial,
+file_handler_init(struct file_handler *file_handler,
+                  struct controller *controller, const char *serial,
                   const char *push_target);
 
 void

app/src/scrcpy.c

@@ -297,14 +297,6 @@ scrcpy(const struct scrcpy_options *options) {
         goto end;
     }
 
-    if (options->display && options->control) {
-        if (!file_handler_init(&s->file_handler, s->server.serial,
-                               options->push_target)) {
-            goto end;
-        }
-        file_handler_initialized = true;
-    }
-
     struct decoder *dec = NULL;
     bool needs_decoder = options->display;
 #ifdef HAVE_V4L2
@@ -353,6 +345,12 @@ scrcpy(const struct scrcpy_options *options) {
                 goto end;
             }
             controller_started = true;
+
+            if (!file_handler_init(&s->file_handler, &s->controller,
+                                   s->server.serial, options->push_target)) {
+                goto end;
+            }
+            file_handler_initialized = true;
         }
 
         const char *window_title =

app/src/v4l2_sink.c

@@ -180,12 +180,17 @@ sc_v4l2_sink_open(struct sc_v4l2_sink *vs) {
     // still expects a pointer-to-non-const (it has not be updated accordingly)
     // <https://github.com/FFmpeg/FFmpeg/commit/0694d8702421e7aff1340038559c438b61bb30dd>
     vs->format_ctx->oformat = (AVOutputFormat *) format;
+#ifdef SCRCPY_LAVF_HAS_AVFORMATCONTEXT_URL
     vs->format_ctx->url = strdup(vs->device_name);
     if (!vs->format_ctx->url) {
         LOGE("Could not strdup v4l2 device name");
         goto error_avformat_free_context;
         return false;
     }
+#else
+    strncpy(vs->format_ctx->filename, vs->device_name,
+            sizeof(vs->format_ctx->filename));
+#endif
 
     AVStream *ostream = avformat_new_stream(vs->format_ctx, encoder);
     if (!ostream) {

server/src/main/java/com/genymobile/scrcpy/Controller.java

@@ -140,6 +140,7 @@ public class Controller {
                 break;
             case ControlMessage.TYPE_SCAN_MEDIA:
                 String path = msg.getText();
+                @SuppressWarnings("deprecation")
                 Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                 intent.setData(Uri.fromFile(new File(path)));
                 Device.sendBroadcast(intent);