mmsfbdevomap.cpp

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/***************************************************************************
 *   Copyright (C) 2005-2007 Stefan Schwarzer, Jens Schneider,             *
 *                           Matthias Hardt, Guido Madaus                  *
 *                                                                         *
 *   Copyright (C) 2007-2008 BerLinux Solutions GbR                        *
 *                           Stefan Schwarzer & Guido Madaus               *
 *                                                                         *
 *   Copyright (C) 2009-2013 BerLinux Solutions GmbH                       *
 *                                                                         *
 *   Authors:                                                              *
 *      Stefan Schwarzer   <stefan.schwarzer@diskohq.org>,                 *
 *      Matthias Hardt     <matthias.hardt@diskohq.org>,                   *
 *      Jens Schneider     <jens.schneider@diskohq.org>,                   *
 *      Guido Madaus       <guido.madaus@diskohq.org>,                     *
 *      Patrick Helterhoff <patrick.helterhoff@diskohq.org>,               *
 *      René Bählkow       <rene.baehlkow@diskohq.org>                     *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License version 2.1 as published by the Free Software Foundation.     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
 **************************************************************************/

#ifdef __HAVE_FBDEV__

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/fb.h>
#include "mmsgui/fb/mmsfbdevomap.h"
#include <sys/ioctl.h>
#include <cstring>
#include "mmsgui/fb/omapfb.h"


#define INITCHECK  if(!this->isinitialized){MMSFB_SetError(0,"MMSFBDevOmap is not initialized");return false;}

MMSFBDevOmap::MMSFBDevOmap() {
    this->osd0.fbdev    = NULL;
    this->vid.fbdev     = NULL;
    this->osd1.fbdev    = NULL;
    this->primary       = NULL;
}

MMSFBDevOmap::~MMSFBDevOmap() {
    closeDevice();
}

bool MMSFBDevOmap::openDevice(int id) {
    char dev[100];
    sprintf(dev, "/dev/fb%d", id);

    if (id < 0 || id > 2) {
        printf("MMSFBDevOmap: unknown device %s\n", dev);
        return false;
    }

    // new device
    MMSFBDev *fbdev = new MMSFBDev();

    if ((fbdev) && (!fbdev->openDevice(dev, (!this->osd0.fbdev && !this->vid.fbdev && !this->osd1.fbdev) ? this->console : MMSFBDEV_NO_CONSOLE))) {
        // delete uninitialized fbdev object
        delete fbdev;
        return false;
    }

    if ((fbdev) && (memcmp(fbdev->fix_screeninfo.id, "omapfb", 6) == 0)) {

        fbdev->onGenFBPixelFormat.connect(sigc::mem_fun(this,&MMSFBDevOmap::onGenFBPixelFormatDev));
        fbdev->onDisable.connect(sigc::mem_fun(this,&MMSFBDevOmap::onDisableDev));
        fbdev->onActivate.connect(sigc::mem_fun(this,&MMSFBDevOmap::onActivateDev));

        switch (id) {
        case 0:
            this->osd0.fbdev = fbdev;
            strcpy(this->osd0.device, dev);
            this->osd0.width = 0;
            this->primary = &this->osd0;
            if (this->console != MMSFBDEV_NO_CONSOLE) {
                // disable device
                this->osd0.fbdev->initLayer(0, 0, 0, MMSFB_PF_NONE, 0);
            }
            break;
        case 1:
            this->vid.fbdev = fbdev;
            strcpy(this->vid.device, dev);
            this->vid.width = 0;
            if (!this->primary)
                this->primary = &this->vid;
            // disable device
            this->vid.fbdev->initLayer(0, 0, 0, MMSFB_PF_NONE, 0);
            break;
        case 2:
            this->osd1.fbdev = fbdev;
            strcpy(this->osd1.device, dev);
            //this->osd1.width = -1;
            this->primary = &this->osd1;
            // disable device
            this->osd1.fbdev->initLayer(0, 0, 0, MMSFB_PF_NONE, 0);
            break;
        }
    }
    else {
        // not supported
        if (fbdev) {
            printf("MMSFBDevOmap: unsupported accelerator %d (%.16s)\n", fbdev->fix_screeninfo.accel, fbdev->fix_screeninfo.id);
            delete fbdev;
        }
        return false;
    }

    return true;
}

bool MMSFBDevOmap::openDevice(char *device_file, int console) {
    // close the device if opened
    closeDevice();

    // we do not initialize the devices here, but dynamically within testLayer() / initLayer()
    this->console = console;
    this->isinitialized = true;
    return true;
}

void MMSFBDevOmap::closeDevice() {
    // close frame buffers
    if (this->osd1.fbdev) {
        delete this->osd1.fbdev;
        this->osd1.fbdev = NULL;
    }
    if (this->vid.fbdev) {
        delete this->vid.fbdev;
        this->vid.fbdev = NULL;
    }
    if (this->osd0.fbdev) {
        delete this->osd0.fbdev;
        this->osd0.fbdev = NULL;
    }
    this->primary = NULL;

    // reset all other
    this->isinitialized = false;
}

bool MMSFBDevOmap::waitForVSync() {
    // is initialized?
    INITCHECK;

    if (!this->primary)
        return false;

    if (!this->primary->fbdev)
        return false;

    static const int s = 0;
    if (ioctl(this->primary->fbdev->fd, OMAPFB_WAITFORVSYNC, &s)) {
        // failed, well then???
    }

    return true;
}

bool MMSFBDevOmap::panDisplay(int buffer_id, void *framebuffer_base) {
    // is initialized?
    INITCHECK;

    if (this->osd0.fbdev && framebuffer_base == this->osd0.fbdev->framebuffer_base) {
        // Graphic layer (OSD0)
        if (this->osd0.fbdev)
            return this->osd0.fbdev->MMSFBDev::panDisplay(buffer_id);
        return false;
    }
    else
    if (this->vid.fbdev && framebuffer_base == this->vid.fbdev->framebuffer_base) {
        // Video layer (VID)
        if (this->vid.fbdev)
            return this->vid.fbdev->MMSFBDev::panDisplay(buffer_id);
        return false;
    }
    else
    if (this->osd1.fbdev && framebuffer_base == this->osd1.fbdev->framebuffer_base) {
        // Graphic layer (OSD1)
        if (this->osd1.fbdev)
            return this->osd1.fbdev->MMSFBDev::panDisplay(buffer_id);
        return false;
    }

    // check framebuffer_base pointer
    printf("MMSFBDevOmap: framebuffer base pointer not correct\n");
    return false;
}

bool MMSFBDevOmap::testLayer(int layer_id) {
    // is initialized?
    INITCHECK;

    switch (layer_id) {
    case 0:
        // default fbdev primary layer 0 on primary screen 0
        if (!this->osd0.fbdev) openDevice(0);
        if (!this->osd0.fbdev) {
            printf("MMSFBDevOmap: OSD Layer %d not initialized\n", layer_id);
            return false;
        }
        return true;
    case 1:
        // Video layer
        if (!this->vid.fbdev) openDevice(1);
        if (!this->vid.fbdev) {
            printf("MMSFBDevOmap: Video Layer %d not initialized\n", layer_id);
            return false;
        }
        return true;
    case 2:
        // OSD layer
        if (!this->osd1.fbdev) openDevice(2);
        if (!this->osd1.fbdev) {
            printf("MMSFBDevOmap: OSD Layer %d not initialized\n", layer_id);
            return false;
        }
        return true;
    default:
        printf("MMSFBDevOmap: layer %d is not supported\n", layer_id);
        break;
    }

    return false;
}


bool MMSFBDevOmap::initLayer(int layer_id, int width, int height, MMSFBSurfacePixelFormat pixelformat, int backbuffer) {
    // is initialized?
    INITCHECK;

    if (!testLayer(layer_id)) {
        // layer not available
        return false;
    }

    switch (layer_id) {
    case 0:
        // default fbdev primary layer 0 on primary screen 0
        if   ((pixelformat != MMSFB_PF_ARGB)
            &&(pixelformat != MMSFB_PF_RGB32)
            &&(pixelformat != MMSFB_PF_RGB16)) {
            printf("MMSFBDevOmap: OSD Layer %d needs pixelformat ARGB, RGB32 or RGB16, but %s given\n",
                        layer_id, getMMSFBPixelFormatString(pixelformat).c_str());
            return false;
        }

        // enable OSD0
        if (this->osd0.fbdev->initLayer(0, width, height, pixelformat, backbuffer)) {
            // set values
            this->layers[layer_id].width = width;
            this->layers[layer_id].height = height;
            this->layers[layer_id].pixelformat = pixelformat;

            // save the buffers
            memcpy(this->layers[layer_id].buffers, this->osd0.fbdev->layers[0].buffers, sizeof(this->osd0.fbdev->layers[0].buffers));

            // layer is initialized
            this->layers[layer_id].isinitialized = true;

            printf("MMSFBDevOmap: OSD Layer %d initialized with %dx%dx%d, pixelformat %s\n",
                        layer_id, width, height, backbuffer+1, getMMSFBPixelFormatString(pixelformat).c_str());

            this->osd0.width = width;
            this->osd0.height = height;
            this->osd0.pixelformat = pixelformat;
            this->osd0.backbuffer = backbuffer;

            return true;
        }
        return false;

    case 1:
#if 0
        // Video layer (VID)
        if   (pixelformat != MMSFB_PF_I420) {
            printf("MMSFBDevOmap: Video Layer %d needs pixelformat I420 (==YUV420) but %s given\n",
                        layer_id, getMMSFBPixelFormatString(pixelformat).c_str());
            return false;
        }
#endif

        // enable VID
        if (this->vid.fbdev->initLayer(0, width, height, pixelformat, backbuffer)) {
            // set values
            this->layers[layer_id].width = width;
            this->layers[layer_id].height = height;
            this->layers[layer_id].pixelformat = pixelformat;

            // save the buffers
            memcpy(this->layers[layer_id].buffers, this->vid.fbdev->layers[0].buffers, sizeof(this->vid.fbdev->layers[0].buffers));

            // layer is initialized
            this->layers[layer_id].isinitialized = true;

            printf("MMSFBDevOmap: Video Layer %d initialized with %dx%dx%d, pixelformat %s\n",
                        layer_id, width, height, backbuffer+1, getMMSFBPixelFormatString(pixelformat).c_str());

            this->vid.width = width;
            this->vid.height = height;
            this->vid.pixelformat = pixelformat;
            this->vid.backbuffer = backbuffer;

            return true;
        }
        return false;

    case 2:
        // OSD layer (OSD1)
        if   ((pixelformat != MMSFB_PF_ARGB)
            &&(pixelformat != MMSFB_PF_RGB32)) {
            printf("MMSFBDevOmap: OSD Layer %d needs pixelformat ARGB or RGB32, but %s given\n",
                        layer_id, getMMSFBPixelFormatString(pixelformat).c_str());
            return false;
        }

        // enable OSD1
        if (this->osd1.fbdev->initLayer(0, width, height, pixelformat, backbuffer)) {
            // set values
            this->layers[layer_id].width = width;
            this->layers[layer_id].height = height;
            this->layers[layer_id].pixelformat = pixelformat;

            // save the buffers
            memcpy(this->layers[layer_id].buffers, this->osd1.fbdev->layers[0].buffers, sizeof(this->osd1.fbdev->layers[0].buffers));

            // layer is initialized
            this->layers[layer_id].isinitialized = true;

            printf("MMSFBDevOmap: OSD Layer %d initialized with %dx%dx%d, pixelformat %s\n",
                        layer_id, width, height, backbuffer+1, getMMSFBPixelFormatString(pixelformat).c_str());

            this->osd1.width = width;
            this->osd1.height = height;
            this->osd1.pixelformat = pixelformat;
            this->osd1.backbuffer = backbuffer;

            return true;
        }
        return false;
    }

    return false;
}

bool MMSFBDevOmap::releaseLayer(int layer_id) {
    // is initialized?
    INITCHECK;

    switch (layer_id) {
    case 0:
        // default fbdev primary layer 0 on primary screen 0
        printf("MMSFBDevOmap: layer %d cannot be released\n", layer_id);
        return false;
    case 1:
        // Video layer (VID)
        if (this->vid.fbdev) {
            // disable
            this->vid.fbdev->initLayer(0, 0, 0, MMSFB_PF_NONE, 0);
            // close
            this->vid.fbdev->closeDevice();
            return true;
        }
        printf("MMSFBDevOmap: Video Layer %d not initialized\n", layer_id);
        return false;
    case 2:
        // OSD layer
        printf("MMSFBDevOmap: layer %d cannot be released\n", layer_id);
        return false;
    default:
        printf("MMSFBDevOmap: layer %d is not supported\n", layer_id);
        break;
    }

    return false;
}

bool MMSFBDevOmap::restoreLayer(int layer_id) {
    // is initialized?
    INITCHECK;

    switch (layer_id) {
    case 0:
        // default fbdev primary layer 0 on primary screen 0
        printf("MMSFBDevOmap: layer %d cannot be restored\n", layer_id);
        return false;
    case 1:
        // Video layer (VID)
        if (this->vid.fbdev) {
            if (this->vid.fbdev->openDevice(this->vid.device, -2)) {
                if (!this->vid.width)
                    return this->vid.fbdev->initLayer(0, 0, 0, MMSFB_PF_NONE, 0);
                else
                if (this->vid.width > 0)
                    return this->vid.fbdev->initLayer(0, this->vid.width, this->vid.height,
                                                      this->vid.pixelformat, this->vid.backbuffer);
                return true;
            }
            return false;
        }
        printf("MMSFBDevOmap: Video Layer %d not initialized\n", layer_id);
        return false;
    case 2:
        // OSD layer (OSD1)
        printf("MMSFBDevOmap: layer %d cannot be restored\n", layer_id);
        return false;
    default:
        printf("MMSFBDevOmap: layer %d is not supported\n", layer_id);
        break;
    }

    return false;
}

bool MMSFBDevOmap::vtGetFd(int *fd) {
    if ((this->primary)&&(this->primary->fbdev)) {
        if (this->primary->fbdev->vt.fd != -1) {
            *fd = this->primary->fbdev->vt.fd;
            return true;
        }
    }
    return false;
}


bool MMSFBDevOmap::onGenFBPixelFormatDev(MMSFBSurfacePixelFormat pf, unsigned int *nonstd_format, MMSFBPixelDef *pixeldef) {

    if (nonstd_format) {
        switch (pf) {
        case MMSFB_PF_I420:
            *nonstd_format = OMAPFB_COLOR_YUV420;
            return true;
        default:
            break;
        }
    }
    return false;
}

bool MMSFBDevOmap::onDisableDev(int fd, string device_file) {
    // setup omap specific plane
    struct omapfb_plane_info plane_info;
    ioctl(fd, OMAPFB_QUERY_PLANE, &plane_info);
    plane_info.enabled = 0;

    printf("MMSFBDevOmap: disable plane, %s\n", device_file.c_str());
    if (ioctl(fd, OMAPFB_SETUP_PLANE, &plane_info)) {
        printf("MMSFBDevOmap: could not disable plane, %s\n", device_file.c_str());
        return false;
    }

    return true;
}

bool MMSFBDevOmap::onActivateDev(int fd, string device_file, struct fb_var_screeninfo *var_screeninfo,
                                 int width, int height, MMSFBSurfacePixelFormat pixelformat, bool switch_mode) {
    if (switch_mode) {
        if (ioctl(fd, FBIOPUT_VSCREENINFO, var_screeninfo) < 0) {
            printf("MMSFBDevOmap: could not switch to mode %dx%d, pixelformat %s (%d bits, nonstd %d), %s\n",
                    width, height, getMMSFBPixelFormatString(pixelformat).c_str(),
                    var_screeninfo->bits_per_pixel, var_screeninfo->nonstd,
                    device_file.c_str());
            return false;
        }
    }

    // enable alpha blending
    if (var_screeninfo->transp.length) {
        printf("MMSFBDevOmap: set alpha blending!\n");
        int sysfd;
        sysfd = open("/sys/devices/platform/omapdss/manager0/alpha_blending_enabled",O_WRONLY);
        if(sysfd == -1) {
            printf("MMSFBDevOmap: could not access display manager (/sys/devices/platform/omapdss/manager0/alpha_blending_enabled)!\n");
        }
        write(sysfd,"1\n",2);
        close(sysfd);
    }

    // setup omap specific plane
    struct omapfb_plane_info plane_info;
    ioctl(fd, OMAPFB_QUERY_PLANE, &plane_info);
    plane_info.enabled = 1;
    plane_info.pos_x = 0;
    plane_info.pos_y = 0;
    plane_info.out_width = var_screeninfo->xres;
    plane_info.out_height = var_screeninfo->yres;

    printf("MMSFBDevOmap: enable plane, %s\n", device_file.c_str());
    if (ioctl(fd, OMAPFB_SETUP_PLANE, &plane_info)) {
        printf("MMSFBDevOmap: could not enable plane, %s\n", device_file.c_str());
        return false;
    }

    return true;
}

#endif

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