Add support for AV1

Add option --codec=av1.

PR #3713 <https://github.com/Genymobile/scrcpy/pull/3713>

app/scrcpy.1

@@ -27,7 +27,7 @@ Default is 8000000.
 
 .TP
 .BI "\-\-codec " name
-Select a video codec (h264 or h265).
+Select a video codec (h264, h265 or av1).
 
 .TP
 .BI "\-\-codec\-options " key\fR[:\fItype\fR]=\fIvalue\fR[,...]

app/src/cli.c

@@ -110,7 +110,7 @@ static const struct sc_option options[] = {
         .longopt_id = OPT_CODEC,
         .longopt = "codec",
         .argdesc = "name",
-        .text = "Select a video codec (h264 or h265).",
+        .text = "Select a video codec (h264, h265 or av1).",
     },
     {
         .longopt_id = OPT_CODEC_OPTIONS,
@@ -1394,7 +1394,11 @@ parse_codec(const char *optarg, enum sc_codec *codec) {
         *codec = SC_CODEC_H265;
         return true;
     }
-    LOGE("Unsupported codec: %s (expected h264 or h265)", optarg);
+    if (!strcmp(optarg, "av1")) {
+        *codec = SC_CODEC_AV1;
+        return true;
+    }
+    LOGE("Unsupported codec: %s (expected h264, h265 or av1)", optarg);
     return false;
 }
 
@@ -1744,6 +1748,13 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
         }
     }
 
+    if (opts->record_format == SC_RECORD_FORMAT_MP4
+            && opts->codec == SC_CODEC_AV1) {
+        LOGE("Could not mux AV1 stream into MP4 container "
+             "(record to mkv or select another video codec)");
+        return false;
+    }
+
     if (!opts->control) {
         if (opts->turn_screen_off) {
             LOGE("Could not request to turn screen off if control is disabled");

app/src/demuxer.c

@@ -27,12 +27,15 @@ sc_demuxer_recv_codec_id(struct sc_demuxer *demuxer) {
 
 #define SC_CODEC_ID_H264 UINT32_C(0x68323634) // "h264" in ASCII
 #define SC_CODEC_ID_H265 UINT32_C(0x68323635) // "h265" in ASCII
+#define SC_CODEC_ID_AV1 UINT32_C(0x00617631) // "av1" in ASCII
     uint32_t codec_id = sc_read32be(data);
     switch (codec_id) {
         case SC_CODEC_ID_H264:
             return AV_CODEC_ID_H264;
         case SC_CODEC_ID_H265:
             return AV_CODEC_ID_HEVC;
+        case SC_CODEC_ID_AV1:
+            return AV_CODEC_ID_AV1;
         default:
             LOGE("Unknown codec id 0x%08" PRIx32, codec_id);
             return AV_CODEC_ID_NONE;

app/src/options.h

@@ -26,6 +26,7 @@ enum sc_record_format {
 enum sc_codec {
     SC_CODEC_H264,
     SC_CODEC_H265,
+    SC_CODEC_AV1,
 };
 
 enum sc_lock_video_orientation {

app/src/server.c

@@ -163,6 +163,8 @@ sc_server_get_codec_name(enum sc_codec codec) {
             return "h264";
         case SC_CODEC_H265:
             return "h265";
+        case SC_CODEC_AV1:
+            return "av1";
         default:
             return NULL;
     }