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tools/thumbnailgen: Don't busywait for connection

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This commit is contained in:
Martin Piatka
2023-06-16 13:11:58 +02:00
parent 2651e5caf5
commit ce2a3eca46
1 changed files with 5 additions and 9 deletions
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14
tools/thumbnailgen.cpp
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@@ -46,8 +46,8 @@ public:
JSAMPROW row = (unsigned char *) f->data + compress_ctx.next_scanline * f->header.width * 3;
jpeg_write_scanlines(&compress_ctx, &row, 1);
}
jpeg_finish_compress(&compress_ctx);
return true;
}
@@ -68,15 +68,13 @@ int main(int argc, char **argv){
Img_writer img_writer;
using clock = std::chrono::steady_clock;
auto frame_time = std::chrono::seconds(1);
auto next_frame = clock::now();
while(true){
printf("Waiting for connection...\n");
while(!ipc_frame_reader_is_connected(reader.get()))
{
//TODO don't busywait
}
ipc_frame_reader_wait_connect(reader.get());
printf("Connected...\n");
while(ipc_frame_reader_read(reader.get(), ipc_frame.get())){
auto now = clock::now();
if(now < next_frame)
@@ -88,9 +86,7 @@ int main(int argc, char **argv){
img_writer.write_img(ipc_frame.get(), tmp_path);
std::filesystem::rename(tmp_path, path);
next_frame += std::chrono::seconds(1);
if(next_frame < now)
next_frame = now;
next_frame = std::max(next_frame + frame_time, now);
}
fprintf(stderr, "Failed to read frame\n");
}