Check cancelled codec preparation cannot publish partial capabilities

tools/chatgui/tests/test_call_video_clock.cpp

@@ -25,13 +25,16 @@ static int64_t start;
 static bool disturbed = false;
 static bool slowDecoder = false, holdAck = false, limitedDisplay = false;
 static std::atomic<unsigned> decodedFrames{0};
-static std::atomic<unsigned> codecOpens{0};
+static std::atomic<unsigned> codecOpens{0}, decoderOpens{0};
+static std::atomic<bool>* cancelEncoderProbe = nullptr;
 static std::atomic<size_t> displayThread{0};
 static std::atomic<bool> unsafeTimer{false};
 static size_t threadId() { return std::hash<std::thread::id>{}(std::this_thread::get_id()); }
 static int64_t nowUs() { return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now().time_since_epoch()).count(); }
 extern "C" int __real_avcodec_open2(AVCodecContext*, const AVCodec*, AVDictionary**);
 extern "C" int __wrap_avcodec_open2(AVCodecContext* context, const AVCodec* codec, AVDictionary** options) {
+    if (av_codec_is_decoder(codec)) ++decoderOpens;
+    else if (cancelEncoderProbe) *cancelEncoderProbe = false;
     ++codecOpens; return __real_avcodec_open2(context, codec, options);
 }
 extern "C" int __real_avcodec_receive_frame(AVCodecContext*, AVFrame*);
@@ -115,6 +118,11 @@ static bool queuePressure() {
 int main(int argc, char** argv) {
     QCoreApplication app(argc, argv); debug_config_init(); debug_set_level(DEBUG_LEVEL_WARN);
     debug_set_category_level(DEBUG_CATEGORY_CALL, DEBUG_LEVEL_DEBUG);
+    // Отмена после готового decoder, но посреди encoder: частичная общая матрица не должна попасть в кэш.
+    std::atomic<bool> interrupted{true}; cancelEncoderProbe = &interrupted;
+    const auto abandoned = CallVideoEngine::capabilities(&interrupted); cancelEncoderProbe = nullptr;
+    if (interrupted || abandoned.encode[0].profiles || abandoned.decode[0].profiles || !decoderOpens) return 1;
+    const unsigned decodedBeforeWarmup = decoderOpens;
     // Как при старте GUI: подготовка в worker, event loop работает, повторный вызов не открывает codec.
     std::atomic<bool> preparing{true}, prepared{false};
     call_video_caps ready{};
@@ -124,7 +132,8 @@ int main(int argc, char** argv) {
     const int64_t warming = nowUs();
     while (!prepared && nowUs() - warming < 10000000) { app.processEvents(); QThread::msleep(1); }
     preparing = false; warmup.join(); pulse.stop();
-    if (!ticks || !ready.decode[0].profiles || !ready.decode[1].profiles || !codecOpens) return 1;
+    if (!ticks || !ready.decode[0].profiles || !ready.decode[1].profiles || !codecOpens
+        || decoderOpens != decodedBeforeWarmup) return 1;
     const unsigned opened = codecOpens;
     const auto cancelled = CallVideoEngine::capabilities(&preparing);
     if (cancelled.encode[0].profiles || cancelled.decode[0].profiles) return 1;