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Diffstat (limited to 'examples/qws/framebuffer/main.c')
| -rw-r--r-- | examples/qws/framebuffer/main.c | 585 |
1 files changed, 0 insertions, 585 deletions
diff --git a/examples/qws/framebuffer/main.c b/examples/qws/framebuffer/main.c deleted file mode 100644 index da11d516a6..0000000000 --- a/examples/qws/framebuffer/main.c +++ /dev/null @@ -1,585 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor -** the names of its contributors may be used to endorse or promote -** products derived from this software without specific prior written -** permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <stdlib.h> -#include <unistd.h> -#include <stdio.h> -#include <fcntl.h> -#include <linux/fb.h> -#include <linux/kd.h> -#include <sys/mman.h> -#include <sys/ioctl.h> -#include <sys/time.h> -#include <string.h> -#include <errno.h> - -struct fb_var_screeninfo vinfo; -struct fb_fix_screeninfo finfo; -char *frameBuffer = 0; -int fbFd = 0; -int ttyFd = 0; - -void printFixedInfo() -{ - printf("Fixed screen info:\n" - "\tid: %s\n" - "\tsmem_start: 0x%lx\n" - "\tsmem_len: %d\n" - "\ttype: %d\n" - "\ttype_aux: %d\n" - "\tvisual: %d\n" - "\txpanstep: %d\n" - "\typanstep: %d\n" - "\tywrapstep: %d\n" - "\tline_length: %d\n" - "\tmmio_start: 0x%lx\n" - "\tmmio_len: %d\n" - "\taccel: %d\n" - "\n", - finfo.id, finfo.smem_start, finfo.smem_len, finfo.type, - finfo.type_aux, finfo.visual, finfo.xpanstep, finfo.ypanstep, - finfo.ywrapstep, finfo.line_length, finfo.mmio_start, - finfo.mmio_len, finfo.accel); -} - -void printVariableInfo() -{ - printf("Variable screen info:\n" - "\txres: %d\n" - "\tyres: %d\n" - "\txres_virtual: %d\n" - "\tyres_virtual: %d\n" - "\tyoffset: %d\n" - "\txoffset: %d\n" - "\tbits_per_pixel: %d\n" - "\tgrayscale: %d\n" - "\tred: offset: %2d, length: %2d, msb_right: %2d\n" - "\tgreen: offset: %2d, length: %2d, msb_right: %2d\n" - "\tblue: offset: %2d, length: %2d, msb_right: %2d\n" - "\ttransp: offset: %2d, length: %2d, msb_right: %2d\n" - "\tnonstd: %d\n" - "\tactivate: %d\n" - "\theight: %d\n" - "\twidth: %d\n" - "\taccel_flags: 0x%x\n" - "\tpixclock: %d\n" - "\tleft_margin: %d\n" - "\tright_margin: %d\n" - "\tupper_margin: %d\n" - "\tlower_margin: %d\n" - "\thsync_len: %d\n" - "\tvsync_len: %d\n" - "\tsync: %d\n" - "\tvmode: %d\n" - "\n", - vinfo.xres, vinfo.yres, vinfo.xres_virtual, vinfo.yres_virtual, - vinfo.xoffset, vinfo.yoffset, vinfo.bits_per_pixel, vinfo.grayscale, - vinfo.red.offset, vinfo.red.length, vinfo.red.msb_right, - vinfo.green.offset, vinfo.green.length, vinfo.green.msb_right, - vinfo.blue.offset, vinfo.blue.length, vinfo.blue.msb_right, - vinfo.transp.offset, vinfo.transp.length, vinfo.transp.msb_right, - vinfo.nonstd, vinfo.activate, vinfo.height, vinfo.width, - vinfo.accel_flags, vinfo.pixclock, vinfo.left_margin, - vinfo.right_margin, vinfo.upper_margin, vinfo.lower_margin, - vinfo.hsync_len, vinfo.vsync_len, vinfo.sync, vinfo.vmode); -} - -long switchToGraphicsMode() -{ - const char *const devs[] = {"/dev/tty0", "/dev/tty", "/dev/console", 0}; - const char * const *dev; - long oldMode = KD_TEXT; - - for (dev = devs; *dev; ++dev) { - ttyFd = open(*dev, O_RDWR); - if (ttyFd != -1) - break; - printf("Opening tty device %s failed: %s\n", *dev, strerror(errno)); - } - - ioctl(ttyFd, KDGETMODE, &oldMode); - if (oldMode == KD_GRAPHICS) { - printf("Was in graphics mode already. Skipping\n"); - return oldMode; - } - int ret = ioctl(ttyFd, KDSETMODE, KD_GRAPHICS); - if (ret == -1) { - printf("Switch to graphics mode failed: %s\n", strerror(errno)); - return oldMode; - } - - printf("Successfully switched to graphics mode.\n\n"); - - return oldMode; -} - -void restoreTextMode(long oldMode) -{ - if (ttyFd == -1) - return; - - ioctl(ttyFd, KDSETMODE, oldMode); - close(ttyFd); -} - -struct fb_cmap oldPalette; -struct fb_cmap palette; -int paletteSize = 0; - -void initPalette_16() -{ - if (finfo.type == FB_TYPE_PACKED_PIXELS) { - // We'll setup a grayscale map for 4bpp linear - int val = 0; - int i; - for (i = 0; i < 16; ++i) { - palette.red[i] = (val << 8) | val; - palette.green[i] = (val << 8) | val; - palette.blue[i] = (val << 8) | val; - val += 17; - } - return; - } - - // Default 16 colour palette - unsigned char reds[16] = { 0x00, 0x7F, 0xBF, 0xFF, 0xFF, 0xA2, - 0x00, 0xFF, 0xFF, 0x00, 0x7F, 0x7F, - 0x00, 0x00, 0x00, 0x82 }; - unsigned char greens[16] = { 0x00, 0x7F, 0xBF, 0xFF, 0x00, 0xC5, - 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, - 0x00, 0x7F, 0x7F, 0x7F }; - unsigned char blues[16] = { 0x00, 0x7F, 0xBF, 0xFF, 0x00, 0x11, - 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x7F, - 0x7F, 0x7F, 0x00, 0x00 }; - - int i; - for (i = 0; i < 16; ++i) { - palette.red[i] = ((reds[i]) << 8) | reds[i]; - palette.green[i] = ((greens[i]) << 8) | greens[i]; - palette.blue[i] = ((blues[i]) << 8) | blues[i]; - palette.transp[i] = 0; - } -} - -void initPalette_256() -{ - if (vinfo.grayscale) { - int i; - for (i = 0; i < 256; ++i) { - unsigned short c = (i << 8) | i; - palette.red[i] = c; - palette.green[i] = c; - palette.blue[i] = c; - palette.transp[i] = 0; - } - return; - } - - // 6x6x6 216 color cube - int i = 0; - int ir, ig, ib; - for (ir = 0x0; ir <= 0xff; ir += 0x33) { - for (ig = 0x0; ig <= 0xff; ig += 0x33) { - for (ib = 0x0; ib <= 0xff; ib += 0x33) { - palette.red[i] = (ir << 8)|ir; - palette.green[i] = (ig << 8)|ig; - palette.blue[i] = (ib << 8)|ib; - palette.transp[i] = 0; - ++i; - } - } - } -} - -void initPalette() -{ - switch (vinfo.bits_per_pixel) { - case 8: paletteSize = 256; break; - case 4: paletteSize = 16; break; - default: break; - } - - if (!paletteSize) - return; /* not using a palette */ - - /* read old palette */ - oldPalette.start = 0; - oldPalette.len = paletteSize; - oldPalette.red = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - oldPalette.green = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - oldPalette.blue=(unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - oldPalette.transp=(unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - if (ioctl(ttyFd, FBIOGETCMAP, &oldPalette) == -1) - perror("initPalette: error reading palette"); - - /* create new palette */ - palette.start = 0; - palette.len = paletteSize; - palette.red = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - palette.green = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - palette.blue = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - palette.transp = (unsigned short*)malloc(sizeof(unsigned short)*paletteSize); - switch (paletteSize) { - case 16: initPalette_16(); break; - case 256: initPalette_256(); break; - default: break; - } - - /* set new palette */ - if (ioctl(ttyFd, FBIOPUTCMAP, &palette) == -1) - perror("initPalette: error setting palette"); -} - -void resetPalette() -{ - if (paletteSize == 0) - return; - - if (ioctl(ttyFd, FBIOPUTCMAP, &oldPalette) == -1) - perror("resetPalette"); - - free(oldPalette.red); - free(oldPalette.green); - free(oldPalette.blue); - free(oldPalette.transp); - - free(palette.red); - free(palette.green); - free(palette.blue); - free(palette.transp); -} - -void drawRect_rgb32(int x0, int y0, int width, int height, int color) -{ - const int bytesPerPixel = 4; - const int stride = finfo.line_length / bytesPerPixel; - - int *dest = (int*)(frameBuffer) - + (y0 + vinfo.yoffset) * stride - + (x0 + vinfo.xoffset); - - int x, y; - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - dest[x] = color; - } - dest += stride; - } -} - -void drawRect_rgb18(int x0, int y0, int width, int height, int color) -{ - const int bytesPerPixel = 3; - const int stride = finfo.line_length - width * bytesPerPixel; - const int red = (color & 0xff0000) >> 16; - const int green = (color & 0xff00) >> 8; - const int blue = (color & 0xff); - const unsigned int packed = (blue >> 2) | - ((green >> 2) << 6) | - ((red >> 2) << 12); - const char color18[3] = { packed & 0xff, - (packed & 0xff00) >> 8, - (packed & 0xff0000) >> 16 }; - - char *dest = (char*)(frameBuffer) - + (y0 + vinfo.yoffset) * stride - + (x0 + vinfo.xoffset); - - int x, y; - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - *dest++ = color18[0]; - *dest++ = color18[1]; - *dest++ = color18[2]; - } - dest += stride; - } -} - -void drawRect_rgb16(int x0, int y0, int width, int height, int color) -{ - const int bytesPerPixel = 2; - const int stride = finfo.line_length / bytesPerPixel; - const int red = (color & 0xff0000) >> (16 + 3); - const int green = (color & 0xff00) >> (8 + 2); - const int blue = (color & 0xff) >> 3; - const short color16 = blue | (green << 5) | (red << (5 + 6)); - - short *dest = (short*)(frameBuffer) - + (y0 + vinfo.yoffset) * stride - + (x0 + vinfo.xoffset); - - int x, y; - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - dest[x] = color16; - } - dest += stride; - } -} - -void drawRect_rgb15(int x0, int y0, int width, int height, int color) -{ - const int bytesPerPixel = 2; - const int stride = finfo.line_length / bytesPerPixel; - const int red = (color & 0xff0000) >> (16 + 3); - const int green = (color & 0xff00) >> (8 + 3); - const int blue = (color & 0xff) >> 3; - const short color15 = blue | (green << 5) | (red << (5 + 5)); - - short *dest = (short*)(frameBuffer) - + (y0 + vinfo.yoffset) * stride - + (x0 + vinfo.xoffset); - - int x, y; - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - dest[x] = color15; - } - dest += stride; - } -} - -void drawRect_palette(int x0, int y0, int width, int height, int color) -{ - const int bytesPerPixel = 1; - const int stride = finfo.line_length / bytesPerPixel; - const unsigned char color8 = color; - - unsigned char *dest = (unsigned char*)(frameBuffer) - + (y0 + vinfo.yoffset) * stride - + (x0 + vinfo.xoffset); - - int x, y; - for (y = 0; y < height; ++y) { - for (x = 0; x < width; ++x) { - dest[x] = color8; - } - dest += stride; - } -} - -void drawRect(int x0, int y0, int width, int height, int color) -{ - switch (vinfo.bits_per_pixel) { - case 32: - drawRect_rgb32(x0, y0, width, height, color); - break; - case 18: - drawRect_rgb18(x0, y0, width, height, color); - break; - case 16: - drawRect_rgb16(x0, y0, width, height, color); - break; - case 15: - drawRect_rgb15(x0, y0, width, height, color); - break; - case 8: - drawRect_palette(x0, y0, width, height, color); - break; - case 4: - drawRect_palette(x0, y0, width, height, color); - break; - default: - printf("Warning: drawRect() not implemented for color depth %i\n", - vinfo.bits_per_pixel); - break; - } -} - -#define PERFORMANCE_RUN_COUNT 5 -void performSpeedTest(void* fb, int fbSize) -{ - int i, j, run; - - struct timeval startTime, endTime; - unsigned long long results[PERFORMANCE_RUN_COUNT]; - unsigned long long average; - - unsigned int* testImage; - - unsigned int randData[17] = { - 0x3A428472, 0x724B84D3, 0x26B898AB, 0x7D980E3C, 0x5345A084, - 0x6779B66B, 0x791EE4B4, 0x6E8EE3CC, 0x63AF504A, 0x18A21B33, - 0x0E26EB73, 0x022F708E, 0x1740F3B0, 0x7E2C699D, 0x0E8A570B, - 0x5F2C22FB, 0x6A742130 - }; - - printf("Frame Buffer Performance test...\n"); - - for (run=0; run<PERFORMANCE_RUN_COUNT; ++run) { - - /* Generate test image with random(ish) data: */ - testImage = (unsigned int*) malloc(fbSize); - j = run; - for (i=0; i < (int)(fbSize / sizeof(int)); ++i) { - testImage[i] = randData[j]; - j++; - if (j >= 17) - j = 0; - } - - gettimeofday(&startTime, NULL); - memcpy(fb, testImage, fbSize); - gettimeofday(&endTime, NULL); - - long secsDiff = endTime.tv_sec - startTime.tv_sec; - results[run] = secsDiff * 1000000 + (endTime.tv_usec - startTime.tv_usec); - - free(testImage); - } - - - average = 0; - for (i=0; i<PERFORMANCE_RUN_COUNT; ++i) - average += results[i]; - average = average / PERFORMANCE_RUN_COUNT; - - printf(" Average: %llu usecs\n", average); - printf(" Bandwidth: %.03f MByte/Sec\n", (fbSize / 1048576.0) / ((double)average / 1000000.0)); - printf(" Max. FPS: %.03f fps\n\n", 1000000.0 / (double)average); - - /* Clear the framebuffer back to black again: */ - memset(fb, 0, fbSize); -} - -int main(int argc, char **argv) -{ - long int screensize = 0; - int doGraphicsMode = 1; - long oldKdMode = KD_TEXT; - const char *devfile = "/dev/fb0"; - int nextArg = 1; - - if (nextArg < argc) { - if (strncmp("nographicsmodeswitch", argv[nextArg], - strlen("nographicsmodeswitch")) == 0) - { - ++nextArg; - doGraphicsMode = 0; - } - } - if (nextArg < argc) - devfile = argv[nextArg++]; - - /* Open the file for reading and writing */ - fbFd = open(devfile, O_RDWR); - if (fbFd == -1) { - perror("Error: cannot open framebuffer device"); - exit(1); - } - printf("The framebuffer device was opened successfully.\n\n"); - - /* Get fixed screen information */ - if (ioctl(fbFd, FBIOGET_FSCREENINFO, &finfo) == -1) { - perror("Error reading fixed information"); - exit(2); - } - - printFixedInfo(); - - /* Figure out the size of the screen in bytes */ - screensize = finfo.smem_len; - - /* Map the device to memory */ - frameBuffer = (char *)mmap(0, screensize, - PROT_READ | PROT_WRITE, MAP_SHARED, - fbFd, 0); - if (frameBuffer == MAP_FAILED) { - perror("Error: Failed to map framebuffer device to memory"); - exit(4); - } - printf("The framebuffer device was mapped to memory successfully.\n" - "\n"); - - if (doGraphicsMode) - oldKdMode = switchToGraphicsMode(); - - /* Get variable screen information */ - if (ioctl(fbFd, FBIOGET_VSCREENINFO, &vinfo) == -1) { - perror("Error reading variable information"); - exit(3); - } - - printVariableInfo(); - - performSpeedTest(frameBuffer, screensize); - - initPalette(); - - if (paletteSize == 0) { - printf("Will draw 3 rectangles on the screen,\n" - "they should be colored red, green and blue (in that order).\n"); - drawRect(vinfo.xres / 8, vinfo.yres / 8, - vinfo.xres / 4, vinfo.yres / 4, - 0xffff0000); - drawRect(vinfo.xres * 3 / 8, vinfo.yres * 3 / 8, - vinfo.xres / 4, vinfo.yres / 4, - 0xff00ff00); - drawRect(vinfo.xres * 5 / 8, vinfo.yres * 5 / 8, - vinfo.xres / 4, vinfo.yres / 4, - 0xff0000ff); - } else { - printf("Will rectangles from the 16 first entries in the color palette" - " on the screen\n"); - int y; - int x; - for (y = 0; y < 4; ++y) { - for (x = 0; x < 4; ++x) { - drawRect(vinfo.xres / 4 * x, vinfo.yres / 4 * y, - vinfo.xres / 4, vinfo.yres / 4, - 4 * y + x); - } - } - } - - sleep(5); - - resetPalette(); - - printf(" Done.\n"); - - if (doGraphicsMode) - restoreTextMode(oldKdMode); - - munmap(frameBuffer, screensize); - close(fbFd); - return 0; -} |