C++ (Cpp) RawFrame::write_to_fd示例

示例#1

文件： CbYCrY8422_scan_double.cpp 项目： DigiDaz/exacore

int main(int argc, char **argv) {
    if (argc > 1 && strcmp(argv[1], "-n") == 0) {
        cpu_force_no_simd( );
    }

    /* Read 540p frames on stdin; dump 1080p frames on stdout... */
    RawFrame frame(960, 540, RawFrame::CbYCrY8422);
    ssize_t ret;

    for (;;) {
        ret = frame.read_from_fd(STDIN_FILENO);

        if (ret < 0) {
            perror("frame.read_from_fd");
            exit(1);
        } else if (ret == 0) {
            break;
        } else {
            RawFrame *out = frame.convert->CbYCrY8422_scan_double( );

            if (out->write_to_fd(STDOUT_FILENO) < 0) {
                perror("write_to_fd");
                break;
            }
            delete out;
        }            
    }
}

示例#2

文件： test_rsvg_frame.cpp 项目： DigiDaz/exacore

int main( ) {
    static char svg_buf[MAX_SVG];
    ssize_t read_ret;
    size_t read_pos = 0;

    /* slurp input */
    while (read_pos < MAX_SVG) {
        read_ret = read(STDIN_FILENO, svg_buf + read_pos, MAX_SVG - read_pos);
        if (read_ret < 0) {
            perror("read");
            exit(1);
        } else if (read_ret == 0) {
            break;
        } else {
            read_pos += read_ret;
        }
    }

    /* create SVG frame */
    RawFrame *svg = RsvgFrame::render_svg(svg_buf, read_pos);

    /* dump raw BGRAn8 video to stdout */
    fprintf(stderr, "w=%d h=%d\n", svg->w( ), svg->h( ));
    svg->write_to_fd(STDOUT_FILENO);
}

示例#3

文件： stretch.cpp 项目： fritsjanb/exacore

int main(int argc, char **argv) {
    if (argc > 1 && strcmp(argv[1], "-n") == 0) {
        cpu_force_no_simd( );
    }

    build_lookup_tables( );

    /* Read 1080p UYVY422 frames on stdin. Dump M-JPEG stream on stdout. */
    RawFrame frame(720, 480, RawFrame::CbYCrY8422);

    ssize_t ret;


    for (;;) {
        ret = frame.read_from_fd(STDIN_FILENO);

        if (ret < 0) {
            perror("frame.read_from_fd");
            exit(1);
        } else if (ret == 0) {
            break;
        } else {
            RawFrame *out = upscale(&frame);

            if (out->write_to_fd(STDOUT_FILENO) < 0) {
                perror("write_to_fd");
                break;
            }
            delete out;
        }            
    }
}

示例#4

文件： CbYCrY8422_BGRAn8.cpp 项目： fritsjanb/exacore

int main(int argc, char **argv) {
    int n_frames = 1000;

    if (argc > 1 && strcmp(argv[1], "-n") == 0) {
        cpu_force_no_simd( );
    }

    RawFrame frame(1920, 1080, RawFrame::CbYCrY8422);
    ssize_t ret;

    ret = frame.read_from_fd(STDIN_FILENO);

    if (ret <= 0) {
        perror("frame.read_from_fd");
        exit(1);
    } else {
        while (n_frames != 0) {
            RawFrame *out = frame.convert->BGRAn8( );
            
            #if 0
            if (out->write_to_fd(STDOUT_FILENO) < 0) {
                perror("write_to_fd");
                exit(1);
            }
            #endif
            delete out;
            n_frames--;
        }
    }            

    return 0;
}

示例#5

文件： mjpeg_422_decode.cpp 项目： DigiDaz/exacore

int main(int argc, char **argv) {
    if (argc > 1 && strcmp(argv[1], "-n") == 0) {
        cpu_force_no_simd( );
    }

    /* Read 1080p UYVY422 frames on stdin. Dump M-JPEG stream on stdout. */
    RawFrame frame(1920, 1080, RawFrame::CbYCrY8422);
    Mjpeg422Encoder enc(1920, 1080);
    Mjpeg422Decoder dec(1920, 1080);

    ssize_t ret;
    std::string comment;


    for (;;) {
        ret = frame.read_from_fd(STDIN_FILENO);

        if (ret < 0) {
            perror("frame.read_from_fd");
            exit(1);
        } else if (ret == 0) {
            break;
        } else {
            enc.set_comment("Hello JPEG world!");
            enc.encode(&frame);
            RawFrame *out = dec.decode(enc.get_data( ), enc.get_data_size( ));

            comment = "                      ";
            dec.get_comment(comment);
            fprintf(stderr, "comment: %s\n", comment.c_str( ));

            if (out->write_to_fd(STDOUT_FILENO) < 0) {
                perror("write_to_fd");
                break;
            }
            delete out;
        }            
    }
}