Make auto-downsize on error optional

Add --no-downsize-on-error option to disable attempts to use a lower
definition on MediaCodec error.

PR #2947 <https://github.com/Genymobile/scrcpy/pull/2947>

app/scrcpy.1

@@ -140,6 +140,12 @@ By default, scrcpy automatically synchronizes the computer clipboard to the devi
 
 This option disables this automatic synchronization.
 
+.TP
+.B \-\-no\-downsize\-on\-error
+By default, on MediaCodec error, scrcpy automatically tries again with a lower definition.
+
+This option disables this behavior.
+
 .TP
 .B \-n, \-\-no\-control
 Disable device control (mirror the device in read\-only).

app/src/cli.c

@@ -52,6 +52,7 @@
 #define OPT_NO_CLIPBOARD_AUTOSYNC  1032
 #define OPT_TCPIP                  1033
 #define OPT_RAW_KEY_EVENTS         1034
+#define OPT_NO_DOWNSIZE_ON_ERROR   1035
 
 struct sc_option {
     char shortopt;
@@ -236,6 +237,13 @@ static const struct sc_option options[] = {
                 "is preserved.\n"
                 "Default is 0 (unlimited).",
     },
+    {
+        .longopt_id = OPT_NO_DOWNSIZE_ON_ERROR,
+        .longopt = "no-downsize-on-error",
+        .text = "By default, on MediaCodec error, scrcpy automatically tries "
+                "again with a lower definition.\n"
+                "This option disables this behavior.",
+    },
     {
         .longopt_id = OPT_NO_CLIPBOARD_AUTOSYNC,
         .longopt = "no-clipboard-autosync",
@@ -1489,6 +1497,9 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
                 opts->tcpip = true;
                 opts->tcpip_dst = optarg;
                 break;
+            case OPT_NO_DOWNSIZE_ON_ERROR:
+                opts->downsize_on_error = false;
+                break;
             case OPT_V4L2_SINK:
 #ifdef HAVE_V4L2
                 opts->v4l2_device = optarg;

app/src/options.c

@@ -54,6 +54,7 @@ const struct scrcpy_options scrcpy_options_default = {
     .legacy_paste = false,
     .power_off_on_close = false,
     .clipboard_autosync = true,
+    .downsize_on_error = true,
     .tcpip = false,
     .tcpip_dst = NULL,
 };

app/src/options.h

@@ -129,6 +129,7 @@ struct scrcpy_options {
     bool legacy_paste;
     bool power_off_on_close;
     bool clipboard_autosync;
+    bool downsize_on_error;
     bool tcpip;
     const char *tcpip_dst;
 };

app/src/scrcpy.c

@@ -364,6 +364,7 @@ scrcpy(struct scrcpy_options *options) {
         .force_adb_forward = options->force_adb_forward,
         .power_off_on_close = options->power_off_on_close,
         .clipboard_autosync = options->clipboard_autosync,
+        .downsize_on_error = options->downsize_on_error,
         .tcpip = options->tcpip,
         .tcpip_dst = options->tcpip_dst,
     };

app/src/server.c

@@ -234,6 +234,10 @@ execute_server(struct sc_server *server,
         // By default, clipboard_autosync is true
         ADD_PARAM("clipboard_autosync=false");
     }
+    if (!params->downsize_on_error) {
+        // By default, downsize_on_error is true
+        ADD_PARAM("downsize_on_error=false");
+    }
 
 #undef ADD_PARAM
 #undef STRBOOL

app/src/server.h

@@ -42,6 +42,7 @@ struct sc_server_params {
     bool force_adb_forward;
     bool power_off_on_close;
     bool clipboard_autosync;
+    bool downsize_on_error;
     bool tcpip;
     const char *tcpip_dst;
 };