Add a compile-time option to set the default container file format

This allows configuration of the file format if a distributor wants
to use a different default from mkv.

Author: Conan-Kudo

config.h.in

@@ -4,6 +4,7 @@
 #define DEFAULT_FRAMERATE @default_framerate@
 #define DEFAULT_AUDIO_CODEC "@default_audio_codec@"
 #define DEFAULT_AUDIO_SAMPLE_RATE @default_audio_sample_rate@
+#define DEFAULT_CONTAINER_FORMAT @default_container_format@
 #define FALLBACK_AUDIO_SAMPLE_FMT "@fallback_audio_sample_fmt@"
 #mesondefine HAVE_PULSE
 #mesondefine HAVE_OPENCL

meson.build

@@ -19,6 +19,7 @@ conf_data.set('default_codec', get_option('default_codec'))
 conf_data.set('default_framerate', get_option('default_framerate'))
 conf_data.set('default_audio_codec', get_option('default_audio_codec'))
 conf_data.set('default_audio_sample_rate', get_option('default_audio_sample_rate'))
+conf_data.set('default_container_format', get_option('default_container_format'))
 conf_data.set('fallback_audio_sample_fmt', get_option('fallback_audio_sample_fmt'))
 
 version = '"@0@"'.format(meson.project_version())

meson_options.txt

@@ -2,5 +2,6 @@ option('default_codec', type: 'string', value: 'libvpx-vp9', description: 'Codec
 option('default_framerate', type: 'integer', value: 60, description: 'Video framerate that will be used by default')
 option('default_audio_codec', type: 'string', value: 'libopus', description: 'Audio codec that will be used by default')
 option('default_audio_sample_rate', type: 'integer', value: 48000, description: 'Audio sample rate that will be used by default')
+option('default_container_format', type: 'string', value: 'mkv', description: 'Container file format that will be used by default')
 option('fallback_audio_sample_fmt', type: 'string', value: 's16', description: 'Fallback audio sample format that will be used if wf-recorder cannot determine the sample formats supported by a codec')
 option('pulse', type: 'feature', value: 'auto', description: 'Enable Pulseaudio')

src/main.cpp

@@ -697,7 +697,7 @@ static void parse_codec_opts(std::map<std::string, std::string>& options, const
 int main(int argc, char *argv[])
 {
     FrameWriterParams params = FrameWriterParams(exit_main_loop);
-    params.file = "recording.mkv";
+    params.file = "recording" + "." + DEFAULT_CONTAINER_FORMAT;
     params.codec = DEFAULT_CODEC;
     params.framerate = DEFAULT_FRAMERATE;
     params.audio_codec = DEFAULT_AUDIO_CODEC;