vo_dga.c

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· C语言 代码 · 共 989 行 · 第 1/3 页

static void switch_video_buffers(void)
{
    vo_dga_current_video_buffer =
        (vo_dga_current_video_buffer + 1) % vo_dga_nr_video_buffers;
}

static void flip_page(void)
{
    if (1 < vo_dga_nr_video_buffers)
    {
#ifdef HAVE_DGA2
        XDGASetViewport(mDisplay, mScreen,
                        0, CURRENT_VIDEO_BUFFER.y, XDGAFlipRetrace);
#else
        XF86DGASetViewPort(mDisplay, mScreen, 0, CURRENT_VIDEO_BUFFER.y);
#endif
        switch_video_buffers();
    }
}

//---------------------------------------------------------

static int draw_slice(uint8_t * src[], int stride[],
                           int w, int h, int x, int y)
{
    return 0;
};

//---------------------------------------------------------

static int query_format(uint32_t format)
{

    if ((format & IMGFMT_BGR_MASK) == IMGFMT_BGR &&
        vd_ModeValid(format & 0xff))
    {
        return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_OSD;
    }

    return 0;
}

//---------------------------------------------------------

static void uninit(void)
{

#ifdef HAVE_DGA2
    XDGADevice *dgadevice;
#endif

    if (!vo_config_count)
        return;

    if (vo_dga_is_running)
    {
        vo_dga_is_running = 0;
        mp_msg(MSGT_VO, MSGL_V, "vo_dga: in uninit\n");
        if (vo_grabpointer)
            XUngrabPointer(mDisplay, CurrentTime);
        XUngrabKeyboard(mDisplay, CurrentTime);
#ifdef HAVE_DGA2
        XDGACloseFramebuffer(mDisplay, mScreen);
        dgadevice = XDGASetMode(mDisplay, mScreen, 0);
        if (dgadevice != NULL)
        {
            XFree(dgadevice);
        }
#else
        XF86DGADirectVideo(mDisplay, mScreen, 0);
        // first disable DirectVideo and then switch mode back!     
#ifdef HAVE_XF86VM
        if (vo_dga_vidmodes != NULL)
        {
            int screen;

            screen = XDefaultScreen(mDisplay);
            mp_msg(MSGT_VO, MSGL_V,
                   "vo_dga: VidModeExt: Switching back..\n");
            // seems some graphics adaptors need this more than once ...
            XF86VidModeSwitchToMode(mDisplay, screen, vo_dga_vidmodes[0]);
            XF86VidModeSwitchToMode(mDisplay, screen, vo_dga_vidmodes[0]);
            XF86VidModeSwitchToMode(mDisplay, screen, vo_dga_vidmodes[0]);
            XF86VidModeSwitchToMode(mDisplay, screen, vo_dga_vidmodes[0]);
            XFree(vo_dga_vidmodes);
        }
#endif
#endif
    }
    vo_x11_uninit();
}


//----------------------------------------------------------
// TODO: check for larger maxy value 
// (useful for double buffering!!!)

static int check_res(int num, int x, int y, int bpp,
                     int new_x, int new_y, int new_vbi, int new_maxy,
                     int *old_x, int *old_y, int *old_vbi, int *old_maxy)
{

    mp_msg(MSGT_VO, MSGL_V,
           "vo_dga: (%3d) Trying %4d x %4d @ %3d Hz @ depth %2d ..", num,
           new_x, new_y, new_vbi, bpp);
    mp_msg(MSGT_VO, MSGL_V, "(old: %dx%d@%d).", *old_x, *old_y, *old_vbi);
    if ((new_x >= x) && (new_y >= y) && (
                                            // prefer a better resolution either in X or in Y
                                            // as long as the other dimension is at least the same
                                            // 
                                            // hmm ... MAYBE it would be more clever to focus on the 
                                            // x-resolution; I had 712x400 and 640x480 and the movie 
                                            // was 640x360; 640x480 would be the 'right thing' here
                                            // but since 712x400 was queried first I got this one. 
                                            // I think there should be a cmd-line switch to let the
                                            // user choose the mode he likes ...   (acki2)
                                            (((new_x < *old_x) &&
                                              !(new_y > *old_y)) ||
                                             ((new_y < *old_y) &&
                                              !(new_x > *old_x)))
                                            // but if we get an identical resolution choose
                                            // the one with the lower refreshrate (saves bandwidth !!!)
                                            // as long as it's above 50 Hz (acki2 on 30/3/2001)
                                            ||
                                            (((new_x == *old_x) &&
                                              (new_y == *old_y) &&
                                              ((new_vbi >= *old_vbi
                                                && *old_vbi < 50)
                                               || (*old_vbi >= 50
                                                   && new_vbi < *old_vbi
                                                   && new_vbi >= 50))) ||
                                             // if everything is equal, then use the mode with the lower 
                                             // stride 
                                             ((new_x == *old_x) &&
                                              (new_y == *old_y) &&
                                              (new_vbi == *old_vbi) &&
                                              (new_maxy > *old_maxy)))))
    {
        *old_x = new_x;
        *old_y = new_y;
        *old_maxy = new_maxy;
        *old_vbi = new_vbi;
        mp_msg(MSGT_VO, MSGL_V, ".ok!!\n");
        return 1;
    } else
    {
        mp_msg(MSGT_VO, MSGL_V, ".no\n");
        return 0;
    }
}



//---------------------------------------------------------

static void init_video_buffers(uint8_t * buffer_base,
                               int view_port_height,
                               int bytes_per_scanline,
                               int max_view_port_y,
                               int use_multiple_buffers)
{
    int bytes_per_buffer = view_port_height * bytes_per_scanline;
    int i;

    if (use_multiple_buffers)
        vo_dga_nr_video_buffers = max_view_port_y / view_port_height;
    else
        vo_dga_nr_video_buffers = 1;

    if (vo_dga_nr_video_buffers > MAX_NR_VIDEO_BUFFERS)
        vo_dga_nr_video_buffers = MAX_NR_VIDEO_BUFFERS;
    if (vo_dga_nr_video_buffers <= 0)
        vo_dga_nr_video_buffers = 1;

    vo_dga_current_video_buffer = 0;

    for (i = 0; i < vo_dga_nr_video_buffers; i++)
    {
        vo_dga_video_buffer[i].y = i * view_port_height;
        vo_dga_video_buffer[i].data = buffer_base + i * bytes_per_buffer;

        // Clear video buffer.
        memset(vo_dga_video_buffer[i].data, 0, bytes_per_buffer);
    }
}

static int config(uint32_t width, uint32_t height,
                       uint32_t d_width, uint32_t d_height,
                       uint32_t flags, char *title, uint32_t format)
{

    int x_off, y_off;
    int wanted_width, wanted_height;

    static unsigned char *vo_dga_base;
    static int prev_width, prev_height;

#ifdef HAVE_DGA2
    // needed to change DGA video mode
    int mX = VO_DGA_INVALID_RES, mY = VO_DGA_INVALID_RES, mVBI =
        100000, mMaxY = 0, i, j = 0;
    int dga_modenum;
    XDGAMode *modeline;
    XDGADevice *dgadevice;
#else
#ifdef HAVE_XF86VM
    unsigned int vm_event, vm_error;
    unsigned int vm_ver, vm_rev;
    int i, j = 0, have_vm = 0;
    int mX = VO_DGA_INVALID_RES, mY = VO_DGA_INVALID_RES, mVBI =
        100000, mMaxY = 0, dga_modenum;
#endif
    int bank, ram;
#endif

    vo_dga_src_format = format;

    wanted_width = d_width;
    wanted_height = d_height;

    if (!wanted_height)
        wanted_height = height;
    if (!wanted_width)
        wanted_width = width;

    if (!vo_dbpp)
    {
        if ((format & IMGFMT_BGR_MASK) == IMGFMT_BGR)
        {
            vo_dga_src_mode = vd_ModeValid(format & 0xff);
        }
    } else
    {
        vo_dga_src_mode = vd_ModeValid(vo_dbpp);
    }
    vo_dga_hw_mode = SRC_MODE.vdm_hw_mode;

    if (!vo_dga_src_mode)
    {
        mp_msg(MSGT_VO, MSGL_ERR, "vo_dga: unsupported video format!\n");
        return 1;
    }

    vo_dga_vp_width = vo_screenwidth;
    vo_dga_vp_height = vo_screenheight;

    mp_msg(MSGT_VO, MSGL_V, "vo_dga: XServer res: %dx%d\n",
           vo_dga_vp_width, vo_dga_vp_height);

// choose a suitable mode ...

#ifdef HAVE_DGA2
// Code to change the video mode added by Michael Graffam
// [e-mail]

    mp_msg(MSGT_VO, MSGL_V, "vo_dga: vo_modelines=%p, vo_modecount=%d\n",
           vo_modelines, vo_modecount);

    if (vo_modelines == NULL)
    {
        mp_msg(MSGT_VO, MSGL_ERR, "vo_dga: can't get modelines\n");
        return 1;
    }

    mp_msg(MSGT_VO, MSGL_INFO,
           "vo_dga: DGA 2.0 available :-) Can switch resolution AND depth!\n");
    for (i = 0; i < vo_modecount; i++)
    {
        if (vd_ModeEqual(vo_modelines[i].depth,
                         vo_modelines[i].bitsPerPixel,
                         vo_modelines[i].redMask,
                         vo_modelines[i].greenMask,
                         vo_modelines[i].blueMask, vo_dga_hw_mode))
        {

            mp_msg(MSGT_VO, MSGL_V, "maxy: %4d, depth: %2d, %4dx%4d, ",
                   vo_modelines[i].maxViewportY, vo_modelines[i].depth,
                   vo_modelines[i].imageWidth,
                   vo_modelines[i].imageHeight);
            if (check_res
                (i, wanted_width, wanted_height, vo_modelines[i].depth,
                 vo_modelines[i].viewportWidth,
                 vo_modelines[i].viewportHeight,
                 (unsigned) vo_modelines[i].verticalRefresh,
                 vo_modelines[i].maxViewportY, &mX, &mY, &mVBI, &mMaxY))
                j = i;
        }
    }
    mp_msg(MSGT_VO, MSGL_INFO,
           "vo_dga: Selected hardware mode %4d x %4d @ %3d Hz @ depth %2d, bitspp %2d.\n",
           mX, mY, mVBI, HW_MODE.vdm_depth, HW_MODE.vdm_bitspp);
    mp_msg(MSGT_VO, MSGL_INFO,
           "vo_dga: Video parameters by codec: %3d x %3d, depth %2d, bitspp %2d.\n",
           width, height, SRC_MODE.vdm_depth, SRC_MODE.vdm_bitspp);
    vo_dga_vp_width = mX;
    vo_dga_vp_height = mY;

    if ((flags & VOFLAG_SWSCALE) || (flags & VOFLAG_FULLSCREEN))
    {                           /* -zoom or -fs */
        scale_dstW = (d_width + 7) & ~7;
        scale_dstH = d_height;
        scale_srcW = width;
        scale_srcH = height;
        aspect_save_screenres(mX, mY);
        aspect_save_orig(scale_srcW, scale_srcH);
        aspect_save_prescale(scale_dstW, scale_dstH);
        if (flags & VOFLAG_FULLSCREEN)       /* -fs */
            aspect(&scale_dstW, &scale_dstH, A_ZOOM);
        else if (flags & VOFLAG_SWSCALE)  /* -fs */
            aspect(&scale_dstW, &scale_dstH, A_NOZOOM);
        mp_msg(MSGT_VO, MSGL_INFO,
               "vo_dga: Aspect corrected size for SwScaler: %4d x %4d.\n",
               scale_dstW, scale_dstH);
        /* XXX this is a hack, but I'm lazy ;-) :: atmos */
        width = scale_dstW;
        height = scale_dstH;
    }

    vo_dga_width = vo_modelines[j].bytesPerScanline / HW_MODE.vdm_bytespp;
    dga_modenum = vo_modelines[j].num;
    modeline = vo_modelines + j;

#else

#ifdef HAVE_XF86VM

    mp_msg(MSGT_VO, MSGL_INFO,
           "vo_dga: DGA 1.0 compatibility code: Using XF86VidMode for mode switching!\n");