Function test_decoder_full

dlib/test/ffmpeg.cpp:225–324

      class image_type
    >
    void test_decoder_full (
        const std::string&  filepath,
        const std::string&  codec,
        const int           nframes,
        const int           height,
        const int           width,
        const int           sample_rate,
        bool                has_image,
        bool                has_audio
    )
    {
        decoder dec([&] {
            decoder::args args;
            args.codec_name = codec;
            return args;
        }());

        DLIB_TEST(dec.is_open());
        DLIB_TEST(dec.get_codec_name() == codec);
        DLIB_TEST(dec.is_audio_decoder() == has_audio);
        DLIB_TEST(dec.is_image_decoder() == has_image);

        image_type                  img;
        audio<int16_t, 2>           audio_buf;
        frame                       frame_copy;
        int                         count{0};
        int                         nsamples{0};
        int                         iteration{0};

        ifstream fin{filepath, std::ios::binary};
        std::vector<char> buf(1024);

        const resizing_args args_image {
            0,
            0,
            pix_traits<pixel_type_t<image_type>>::fmt
        };

        const resampling_args args_audio {
            sample_rate,
            dlib::ffmpeg::details::get_layout_from_channels(decltype(audio_buf)::nchannels),
            sample_traits<decltype(audio_buf)::format>::fmt
        };

        const auto callback = [&](frame& f)
        {
            if (has_audio)
            {
                convert(f, audio_buf);
                convert(audio_buf, frame_copy);
                DLIB_TEST(f.is_audio());
                DLIB_TEST(f.sample_rate() == sample_rate);
                DLIB_TEST(f.samplefmt() == args_audio.fmt);
                DLIB_TEST(frame_copy.is_audio());
                DLIB_TEST(frame_copy.sample_rate() == sample_rate);
                DLIB_TEST(frame_copy.samplefmt() == args_audio.fmt);

                nsamples += f.nsamples();