Fix build without app_audio build option

2 files changed, 21 insertions, 5 deletions

diff --git a/README.md b/README.md
index 1ccbbad..0cbfcec 100644
--- a/README.md
+++ b/README.md
@@ -135,8 +135,9 @@ To record the default input device (microphone) you can use the `default_input`
 To list all available audio devices run `gpu-screen-recorder --list-audio-devices`. The name to use with GPU Screen Recorder will be on the left side and the human readable name is on the right side.\
 To record multiple audio devices to multiple audio tracks specify the `-a` option multiple times, for example `-a default_output -a default_input`.\
 To record multiple audio devices into one audio track (merged) specify the `-a` option once split with `|` for each audio device, for example `-a "default_output|default_input"`.\
-In wireplumber the name of the audio will be in the format `gsr-<audio_device>`, but you can change that name by prefixing the audio device with a name and then a forward slash, for example: `-a "name/default_output"`.
-
+In wireplumber the name of the audio will be in the format `gsr-<audio_device>`, but you can change that name by prefixing the audio device with a name and then a forward slash, for example: `-a "name/default_output"`.\
+You can also record audio from specific applications instead of from audio devices by using the `-aa` option to only record the specified applications or `-aai` to record all applications except the ones provided.\
+To list all available application to record from run `gpu-screen-recorder --list-application-audio`.
 ## Simple way to run replay without gui
 Run the script `scripts/start-replay.sh` to start replay and then `scripts/save-replay.sh` to save a replay and `scripts/stop-replay.sh` to stop the replay. The videos are saved to `$HOME/Videos`.
 You can use these scripts to start replay at system startup if you add `scripts/start-replay.sh` to startup (this can be done differently depending on your desktop environment / window manager) and then go into
diff --git a/src/main.cpp b/src/main.cpp
index d256b1b..f987f0e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1067,7 +1067,12 @@ static void open_video_hardware(AVCodecContext *codec_context, VideoQuality vide
 static void usage_header() {
     const bool inside_flatpak = getenv("FLATPAK_ID") != NULL;
     const char *program_name = inside_flatpak ? "flatpak run --command=gpu-screen-recorder com.dec05eba.gpu_screen_recorder" : "gpu-screen-recorder";
-    fprintf(stderr, "usage: %s -w <window_id|monitor|focused|portal> [-c <container_format>] [-s WxH] -f <fps> [-a <audio_input>] [-aa <application_name>] [-q <quality>] [-r <replay_buffer_size_sec>] [-k h264|hevc|av1|vp8|vp9|hevc_hdr|av1_hdr|hevc_10bit|av1_10bit] [-ac aac|opus|flac] [-ab <bitrate>] [-oc yes|no] [-fm cfr|vfr|content] [-bm auto|qp|vbr|cbr] [-cr limited|full] [-df yes|no] [-sc <script_path>] [-cursor yes|no] [-keyint <value>] [-restore-portal-session yes|no] [-portal-session-token-filepath filepath] [-encoder gpu|cpu] [-o <output_file>] [-v yes|no] [--version] [-h|--help]\n", program_name);
+#ifdef GSR_APP_AUDIO
+    const char *app_audio_options = " [-aa <application_name>] [-aai <application_name>] ";
+#else
+    const char *app_audio_options = "";
+#endif
+    fprintf(stderr, "usage: %s -w <window_id|monitor|focused|portal> [-c <container_format>] [-s WxH] -f <fps> [-a <audio_input>]%s[-q <quality>] [-r <replay_buffer_size_sec>] [-k h264|hevc|av1|vp8|vp9|hevc_hdr|av1_hdr|hevc_10bit|av1_10bit] [-ac aac|opus|flac] [-ab <bitrate>] [-oc yes|no] [-fm cfr|vfr|content] [-bm auto|qp|vbr|cbr] [-cr limited|full] [-df yes|no] [-sc <script_path>] [-cursor yes|no] [-keyint <value>] [-restore-portal-session yes|no] [-portal-session-token-filepath filepath] [-encoder gpu|cpu] [-o <output_file>] [-v yes|no] [--version] [-h|--help]\n", program_name, app_audio_options);
 }
 
 // TODO: Update with portal info
@@ -1086,7 +1091,7 @@ static void usage_full() {
     fprintf(stderr, "        \"screen-direct-force\" is not recommended unless you use a VRR (G-SYNC) monitor on Nvidia X11 and you are aware that using this option can cause\n");
     fprintf(stderr, "        games to freeze/crash or other issues because of Nvidia driver issues.\n");
     fprintf(stderr, "        \"screen-direct-force\" option is only available on Nvidia X11. VRR works without this option on other systems.\n");
-    fprintf(stderr, "        Run GPU Screen Recorder with the --list-capture-options to list valid values for this option.\n");
+    fprintf(stderr, "        Run GPU Screen Recorder with the --list-capture-options option to list valid values for this option.\n");
     fprintf(stderr, "\n");
     fprintf(stderr, "  -c    Container format for output file, for example mp4, or flv. Only required if no output file is specified or if recording in replay buffer mode.\n");
     fprintf(stderr, "        If an output file is specified and -c is not used then the container format is determined from the output filename extension.\n");
@@ -1222,7 +1227,7 @@ static void usage_full() {
     fprintf(stderr, "\n");
 #ifdef GSR_APP_AUDIO
     fprintf(stderr, "  --list-application-audio\n");
-    fprintf(stderr, "        List application audio sources. Lists application audio sources (prints them to stdout and exits), for example:\n");
+    fprintf(stderr, "        Lists application that you can record from (with the -aa or -aai option) (prints them to stdout and exits), for example:\n");
     fprintf(stderr, "          firefox\n");
     fprintf(stderr, "          csgo\n");
     fprintf(stderr, "        These names are the application audio names that can be passed to GPU Screen Recorder with the -aa option.\n");
@@ -2149,11 +2154,13 @@ static bool app_audio_query_callback(const char *app_name, void*) {
 }
 
 static void list_application_audio_command() {
+#ifdef GSR_APP_AUDIO
     gsr_pipewire_audio audio;
     if(gsr_pipewire_audio_init(&audio)) {
         gsr_pipewire_audio_for_each_app(&audio, app_audio_query_callback, NULL);
         gsr_pipewire_audio_deinit(&audio);
     }
+#endif
 
     fflush(stdout);
     _exit(0);
@@ -2798,6 +2805,7 @@ static std::vector<AudioDevice> create_device_audio_inputs(const std::vector<Aud
     return audio_track_audio_devices;
 }
 
+#ifdef GSR_APP_AUDIO
 static AudioDevice create_application_audio_audio_input(const MergedAudioInputs &merged_audio_inputs, AVCodecContext *audio_codec_context, int num_channels, double num_audio_frames_shift, gsr_pipewire_audio *pipewire_audio) {
     AudioDevice audio_device;
     audio_device.frame = create_audio_frame(audio_codec_context);
@@ -2836,6 +2844,7 @@ static AudioDevice create_application_audio_audio_input(const MergedAudioInputs
 
     return audio_device;
 }
+#endif
 
 int main(int argc, char **argv) {
     setlocale(LC_ALL, "C"); // Sigh... stupid C
@@ -3178,6 +3187,7 @@ int main(int argc, char **argv) {
         uses_app_audio = true;
 
     std::vector<std::string> app_audio_names;
+#ifdef GSR_APP_AUDIO
     gsr_pipewire_audio pipewire_audio;
     memset(&pipewire_audio, 0, sizeof(pipewire_audio));
     if(uses_app_audio) {
@@ -3192,6 +3202,7 @@ int main(int argc, char **argv) {
             return true;
         }, &app_audio_names);
     }
+#endif
 
     bool uses_amix = false;
     std::vector<MergedAudioInputs> requested_audio_inputs = parse_audio_inputs(audio_devices, audio_input_arg, app_audio_input_arg, app_audio_input_inverted_arg, uses_amix, app_audio_names);
@@ -3638,7 +3649,9 @@ int main(int argc, char **argv) {
                 audio_track_audio_devices = create_device_audio_inputs(merged_audio_inputs.audio_inputs, audio_codec_context, num_channels, num_audio_frames_shift, src_filter_ctx, use_amix);
                 break;
             case AudioInputType::APPLICATION:
+#ifdef GSR_APP_AUDIO
                 audio_track_audio_devices.push_back(create_application_audio_audio_input(merged_audio_inputs, audio_codec_context, num_channels, num_audio_frames_shift, &pipewire_audio));
+#endif
                 break;
         }
 
@@ -4120,7 +4133,9 @@ int main(int argc, char **argv) {
     gsr_color_conversion_deinit(&color_conversion);
     gsr_video_encoder_destroy(video_encoder, video_codec_context);
     gsr_capture_destroy(capture, video_codec_context);
+#ifdef GSR_APP_AUDIO
     gsr_pipewire_audio_deinit(&pipewire_audio);
+#endif
 
     if(replay_buffer_size_secs == -1 && recording_saved_script)
         run_recording_saved_script_async(recording_saved_script, filename, "regular");