Add --audio-encoder

Similar to --video-encoder, but for audio.

PR #3757 <https://github.com/Genymobile/scrcpy/pull/3757>

app/src/cli.c

@@ -67,6 +67,7 @@ enum {
     OPT_AUDIO_BIT_RATE,
     OPT_AUDIO_CODEC,
     OPT_AUDIO_CODEC_OPTIONS,
+    OPT_AUDIO_ENCODER,
 };
 
 struct sc_option {
@@ -135,6 +136,13 @@ static const struct sc_option options[] = {
                 "Android documentation: "
                 "<https://d.android.com/reference/android/media/MediaFormat>",
     },
+    {
+        .longopt_id = OPT_AUDIO_ENCODER,
+        .longopt = "audio-encoder",
+        .argdesc = "name",
+        .text = "Use a specific MediaCodec audio encoder (depending on the "
+                "codec provided by --audio-codec).",
+    },
     {
         .shortopt = 'b',
         .longopt = "video-bit-rate",
@@ -1694,6 +1702,9 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
             case OPT_VIDEO_ENCODER:
                 opts->video_encoder = optarg;
                 break;
+            case OPT_AUDIO_ENCODER:
+                opts->audio_encoder = optarg;
+                break;
             case OPT_FORCE_ADB_FORWARD:
                 opts->force_adb_forward = true;
                 break;

app/src/options.c

@@ -10,6 +10,7 @@ const struct scrcpy_options scrcpy_options_default = {
     .video_codec_options = NULL,
     .audio_codec_options = NULL,
     .video_encoder = NULL,
+    .audio_encoder = NULL,
 #ifdef HAVE_V4L2
     .v4l2_device = NULL,
 #endif

app/src/options.h

@@ -98,6 +98,7 @@ struct scrcpy_options {
     const char *video_codec_options;
     const char *audio_codec_options;
     const char *video_encoder;
+    const char *audio_encoder;
 #ifdef HAVE_V4L2
     const char *v4l2_device;
 #endif

app/src/scrcpy.c

@@ -333,6 +333,7 @@ scrcpy(struct scrcpy_options *options) {
         .video_codec_options = options->video_codec_options,
         .audio_codec_options = options->audio_codec_options,
         .video_encoder = options->video_encoder,
+        .audio_encoder = options->audio_encoder,
         .force_adb_forward = options->force_adb_forward,
         .power_off_on_close = options->power_off_on_close,
         .clipboard_autosync = options->clipboard_autosync,

app/src/server.c

@@ -74,6 +74,7 @@ sc_server_params_destroy(struct sc_server_params *params) {
     free((char *) params->video_codec_options);
     free((char *) params->audio_codec_options);
     free((char *) params->video_encoder);
+    free((char *) params->audio_encoder);
     free((char *) params->tcpip_dst);
 }
 
@@ -99,6 +100,7 @@ sc_server_params_copy(struct sc_server_params *dst,
     COPY(video_codec_options);
     COPY(audio_codec_options);
     COPY(video_encoder);
+    COPY(audio_encoder);
     COPY(tcpip_dst);
 #undef COPY
 
@@ -276,6 +278,9 @@ execute_server(struct sc_server *server,
     if (params->video_encoder) {
         ADD_PARAM("video_encoder=%s", params->video_encoder);
     }
+    if (params->audio_encoder) {
+        ADD_PARAM("audio_encoder=%s", params->audio_encoder);
+    }
     if (params->power_off_on_close) {
         ADD_PARAM("power_off_on_close=true");
     }

app/src/server.h

@@ -31,6 +31,7 @@ struct sc_server_params {
     const char *video_codec_options;
     const char *audio_codec_options;
     const char *video_encoder;
+    const char *audio_encoder;
     struct sc_port_range port_range;
     uint32_t tunnel_host;
     uint16_t tunnel_port;