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examples/dmabuf-capture: use getopt 

This makes it a little bit less annoying to provide the right arguments.
All options have reasonable defaults.
This commit is contained in:
Simon Ser 2020-04-30 17:04:10 +02:00 committed by Drew DeVault
parent 90ede7f838
commit 61d6408fdb
1 changed files with 72 additions and 25 deletions
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97
examples/dmabuf-capture.c
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@ -205,10 +205,11 @@ static void remove_output(struct wayland_output *out) {
}
static struct wayland_output *find_output(struct capture_context *ctx,
struct wl_output *out, uint32_t id) {
struct wl_output *out, int id) {
struct wayland_output *output, *tmp;
wl_list_for_each_safe(output, tmp, &ctx->output_list, link) {
if ((output->output == out) || (output->id == id)) {
if (output->output == out || (id >= 0 && output->id == (uint32_t)id)
|| id == -1) {
return output;
}
}
@ -766,16 +767,77 @@ static int init(struct capture_context *ctx) {
static void uninit(struct capture_context *ctx);
static const char usage[] = "usage: dmabuf-capture [options...] <destination file path>\n"
" -o <output ID>\n"
" -t <hardware device type>\n"
" -d <device path>\n"
" -e <encoder>\n"
" -f <pixel format>\n"
" -r <bitrate in Mbps>\n"
"\n"
"Example:\n"
" dmabuf-capture -o 32 -t vaapi -d /dev/dri/renderD129 \\\n"
" -e libx264 -f nv12 -r 12 recording.mkv\n";
int main(int argc, char *argv[]) {
int err;
struct capture_context ctx = { 0 };
ctx.class = &((AVClass) {
struct capture_context ctx = {
.hardware_device = "/dev/dri/renderD128",
.encoder_name = "libx264",
.out_bitrate = 12,
};
int output_id = -1;
const char *hw_device_type = "vaapi";
const char *software_format = "nv12";
int opt;
while ((opt = getopt(argc, argv, "ho:t:d:e:f:r:")) != -1) {
char *end;
switch (opt) {
case 'o':
output_id = strtol(optarg, &end, 10);
if (optarg[0] == '\0' || end[0] != '\0') {
fprintf(stderr, "Output ID is not an integer\n");
return 1;
}
break;
case 't':
hw_device_type = optarg;
break;
case 'd':
ctx.hardware_device = optarg;
break;
case 'e':
ctx.encoder_name = optarg;
break;
case 'f':
software_format = optarg;
break;
case 'r':
ctx.out_bitrate = strtof(optarg, &end);
if (optarg[0] == '\0' || end[0] != '\0') {
fprintf(stderr, "Bitrate is not a floating-pointer number\n");
return 1;
}
break;
default:
fprintf(stderr, "%s", usage);
return 1;
}
}
if (optind >= argc) {
fprintf(stderr, "Missing destination file argument\n");
fprintf(stderr, "%s", usage);
return 1;
}
ctx.out_filename = argv[optind];
ctx.class = &((AVClass){
.class_name = "dmabuf-capture",
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
});
err = init(&ctx);
int err = init(&ctx);
if (err) {
goto end;
}
@ -786,31 +848,16 @@ int main(int argc, char *argv[]) {
o->make, o->model, o->id);
}
if (argc != 8) {
printf("Invalid number of arguments! Usage and example:\n"
"./dmabuf-capture <source id> <hardware device type> <device> "
"<encoder name> <pixel format> <bitrate in Mbps> <file path>\n"
"./dmabuf-capture 0 vaapi /dev/dri/renderD129 libx264 nv12 12 "
"dmabuf_recording_01.mkv\n");
return 1;
}
const int o_id = strtol(argv[1], NULL, 10);
o = find_output(&ctx, NULL, o_id);
o = find_output(&ctx, NULL, output_id);
if (!o) {
printf("Unable to find output with ID %i!\n", o_id);
printf("Unable to find output with ID %d\n", output_id);
return 1;
}
ctx.target_output = o->output;
ctx.with_cursor = true;
ctx.hw_device_type = av_hwdevice_find_type_by_name(argv[2]);
ctx.hardware_device = argv[3];
ctx.encoder_name = argv[4];
ctx.software_format = av_get_pix_fmt(argv[5]);
ctx.out_bitrate = strtof(argv[6], NULL);
ctx.out_filename = argv[7];
ctx.hw_device_type = av_hwdevice_find_type_by_name(hw_device_type);
ctx.software_format = av_get_pix_fmt(software_format);
av_dict_set(&ctx.encoder_opts, "preset", "veryfast", 0);