fresh start

3 files changed, 897 insertions, 0 deletions

diff --git a/tools/bitmap_to_c.c b/tools/bitmap_to_c.c
new file mode 100644
index 0000000..3329d5e
--- /dev/null
+++ b/tools/bitmap_to_c.c
@@ -0,0 +1,396 @@
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+
+#define ALIGN(a, b) (((a) + ((b) - 1)) & ~((b) - 1))
+#define TRUE 1
+#define FALSE 0
+
+#define ERROR(str) printf("%s: error: %s\n", prog_name, str); exit(-1);
+
+static char *prog_name = NULL;
+
+static size_t read_input(const char *file_name, uint8_t** out_buf)
+{
+    int fd = open(file_name, O_RDONLY);
+    if (fd == -1) {
+        ERROR("open source file failed");
+        return 0;
+    }
+    struct stat file_stat;
+    if (fstat(fd, &file_stat) == -1) {
+        ERROR("fstat on source file failed");
+        return 0;
+    }
+
+    uint8_t *buf = malloc(file_stat.st_size);
+
+    if (!buf) {
+        close(fd);
+        ERROR("alloc mem failed");
+        return 0;
+    }
+
+    size_t to_read = file_stat.st_size;
+    uint8_t *buf_pos = buf;
+    while (to_read) {
+        int n = read(fd, buf_pos, to_read);
+        if (n <= 0) {
+            ERROR("read from source file failed");
+            close(fd);
+            free(buf);
+            return 0;
+        }
+        to_read -= n;
+        buf_pos += n;
+    }
+    close(fd);
+    *out_buf = buf;
+    return file_stat.st_size;
+}
+
+typedef struct __attribute__ ((__packed__)) BitmpaHeader {
+    uint32_t header_size;
+    uint32_t width;
+    uint32_t height;
+    uint16_t plans;
+    uint16_t bpp;
+    uint32_t compression;
+    uint32_t image_size;
+    uint32_t horizontal_resolution;
+    uint32_t vertical_resolution;
+    uint32_t num_colors;
+    uint32_t important_colors;
+} BitmpaHeader;
+
+typedef struct __attribute__ ((__packed__)) BMPFileHeader {
+    uint16_t magic;
+    uint32_t file_size;
+    uint32_t reserved;
+    uint32_t data_offset;
+    BitmpaHeader header;
+} BMPFileHeader;
+
+#define BI_RGB 0
+
+typedef struct Pixmap {
+    uint32_t width;
+    uint32_t height;
+    uint32_t stride;
+    uint32_t bpp;
+    uint8_t* data;
+} Pixmap;
+
+static Pixmap *init_bitmap(size_t input_size, uint8_t *buf)
+{
+    BMPFileHeader *file_header;
+    uint8_t *pixels;
+    Pixmap *pixmap;
+    uint32_t stride;
+
+
+    if (input_size < sizeof(BMPFileHeader)) {
+        ERROR("invalid source file");
+        return NULL;
+    }
+
+    file_header = (BMPFileHeader *)buf;
+
+    if (file_header->magic != 0x4d42) {
+        ERROR("bad bitmap magic");
+        return NULL;
+    }
+
+    if (file_header->file_size != input_size) {
+        ERROR("invalid source file");
+        return NULL;
+    }
+
+    if (file_header->header.header_size != 40 || file_header->header.plans != 1 ||
+                                                        file_header->header.compression != BI_RGB ||
+                                                        !file_header->header.width ||
+                                                        !file_header->header.height) {
+        ERROR("invalid bitmap header");
+        return NULL;
+    }
+
+    if (file_header->header.bpp == 32) {
+        stride = file_header->header.width * sizeof(uint32_t);
+    } else if (file_header->header.bpp == 24) {
+        stride = ALIGN(file_header->header.width * 3, 4);
+    } else {
+        ERROR("unsupported bpp");
+        return NULL;
+    }
+
+    if (file_header->header.height * stride > file_header->header.image_size) {
+        ERROR("image size is to small");
+        return NULL;
+    }
+    pixels = buf + file_header->data_offset;
+    if (pixels < (uint8_t *)(file_header + 1) ||
+                                       pixels + file_header->header.image_size > buf + input_size) {
+        ERROR("bad data offset");
+        return NULL;
+    }
+
+    if (!(pixmap = (Pixmap *)malloc(sizeof(*pixmap)))) {
+        ERROR("alloc mem failed");
+        return NULL;
+    }
+
+    pixmap->width = file_header->header.width;
+    pixmap->height = file_header->header.height;
+    pixmap->stride = stride;
+    pixmap->bpp = file_header->header.bpp;
+    pixmap->data = pixels;
+    return pixmap;
+}
+
+static inline void put_char(FILE* f, uint8_t val)
+{
+    fprintf(f, "0x%.2x,", val);
+}
+
+static void do_dump_with_alpha_conversion(const Pixmap *pixmap, FILE *f)
+{
+    uint8_t *line = (uint8_t *)(pixmap->data + ((pixmap->height - 1) * pixmap->stride));
+    int line_size = 0;
+    int i, j;
+
+    for (i = 0; i < pixmap->height; i++) {
+        uint8_t *now = line;
+        for (j = 0; j < pixmap->width; j++, now += 4) {
+            if ((line_size++ % 6) == 0) {
+                fprintf(f, "\n\t\t");
+            }
+            double alpha = (double)now[3] / 0xff;
+            put_char(f, alpha * now[0]);
+            put_char(f, alpha * now[1]);
+            put_char(f, alpha * now[2]);
+            put_char(f, now[3]);
+        }
+        line -= pixmap->stride;
+    }
+}
+
+static void do_dump_32bpp(const Pixmap *pixmap, FILE *f)
+{
+    uint8_t *line = (uint8_t *)(pixmap->data + ((pixmap->height - 1) * pixmap->stride));
+    int line_size = 0;
+    int i, j;
+
+    for (i = 0; i < pixmap->height; i++) {
+        uint8_t *now = line;
+        for (j = 0; j < pixmap->width; j++, now += 4) {
+            if ((line_size++ % 6) == 0) {
+                fprintf(f, "\n\t\t");
+            }
+            put_char(f, now[0]);
+            put_char(f, now[1]);
+            put_char(f, now[2]);
+            put_char(f, now[3]);
+        }
+        line -= pixmap->stride;
+    }
+}
+
+static void do_dump_24bpp(const Pixmap *pixmap, FILE *f)
+{
+    uint8_t *line = (uint8_t *)(pixmap->data + ((pixmap->height - 1) * pixmap->stride));
+    int line_size = 0;
+    int i, j;
+
+    for (i = 0; i < pixmap->height; i++) {
+        uint8_t *now = line;
+        for (j = 0; j < pixmap->width; j++, now += 3) {
+            if ((line_size++ % 6) == 0) {
+                fprintf(f, "\n\t\t");
+            }
+            put_char(f, now[0]);
+            put_char(f, now[1]);
+            put_char(f, now[2]);
+            put_char(f, 0);
+        }
+        line -= pixmap->stride;
+    }
+}
+
+static int pixmap_to_c_struct(const Pixmap *pixmap, const char *dest_file, const char *image_name,
+                              int alpha_convertion)
+{
+    int fd;
+    FILE *f;
+
+    if ((fd = open(dest_file, O_WRONLY | O_CREAT | O_TRUNC, 0644)) == -1) {
+        ERROR("open dest file failed");
+        return -1;
+    }
+
+    if (!(f = fdopen(fd, "w"))) {
+        ERROR("fdopen failed");
+        close(fd);
+        return -1;
+    }
+
+    uint32_t data_size = pixmap->width * sizeof(uint32_t) * pixmap->height;
+    fprintf(f, "static const struct {\n"
+               "\tuint32_t width;\n"
+               "\tuint32_t height;\n"
+               "\tuint8_t pixel_data[%u];\n"
+               "} %s = { %u, %u, {",
+            data_size, image_name, pixmap->width, pixmap->height);
+
+    if (alpha_convertion) {
+        if (pixmap->bpp != 32) {
+            ERROR("32 bpp is requred for alpha option")
+        }
+        do_dump_with_alpha_conversion(pixmap, f);
+    } else if (pixmap->bpp == 32) {
+        do_dump_32bpp(pixmap, f);
+    } else {
+        do_dump_24bpp(pixmap, f);
+    }
+
+    fseek(f, -1, SEEK_CUR);
+    fprintf(f, "}\n};\n");
+    fclose(f);
+    close(fd);
+    return 0;
+}
+
+enum {
+    ALPHA_OPT = 'a',
+    HELP_OPT = 'h',
+    NAME_OPT = 'n',
+};
+
+static void usage()
+{
+    printf("usage: %s [--alpha] [--name <struct name>] SOURCE [DEST]\n", prog_name);
+    printf("       %s --help\n", prog_name);
+}
+
+const struct option longopts[] = {
+    {"help", no_argument, NULL, HELP_OPT},
+    {"alpha", no_argument, NULL, ALPHA_OPT},
+    {"name", required_argument, NULL, NAME_OPT},
+    {NULL, 0, NULL, 0},
+};
+
+int main(int argc, char **argv)
+{
+    size_t input_size;
+    uint8_t* buf;
+    Pixmap *pixmap;
+    int opt;
+    int alpha_convertion = FALSE;
+    char *struct_name = NULL;
+    char *src = NULL;
+    char *dest = NULL;
+
+
+    if (!(prog_name = strrchr(argv[0], '/'))) {
+        prog_name = argv[0];
+    } else {
+        prog_name++;
+    }
+
+
+    while ((opt = getopt_long(argc, argv, "ah", longopts, NULL)) != -1) {
+        switch (opt) {
+        case 0:
+        case '?':
+            usage();
+            exit(-1);
+        case ALPHA_OPT:
+            alpha_convertion = TRUE;
+            break;
+        case HELP_OPT:
+            usage();
+            exit(0);
+        case NAME_OPT:
+            struct_name = optarg;
+            break;
+        }
+    }
+
+    int more = argc - optind;
+    switch (more) {
+    case 1: {
+        char *slash;
+        char *dot;
+
+        dest = malloc(strlen(argv[optind]) + 3);
+        strcpy(dest, argv[optind]);
+        dot = strrchr(dest, '.');
+        slash = strrchr(dest, '/');
+        if (!dot || (slash && slash > dot)) {
+            strcat(dest, ".c");
+        } else {
+            strcpy(dot, ".c");
+        }
+        break;
+    }
+    case 2:
+        dest = argv[optind + 1];
+        //todo: if dir strcat src name
+        break;
+    default:
+        usage();
+        exit(-1);
+    }
+
+    src = argv[optind];
+
+    if (!struct_name) {
+        char *struct_name_src;
+        char *dot;
+
+        struct_name_src = strrchr(dest, '/');
+        if (!struct_name_src) {
+            struct_name_src = dest;
+        } else {
+            ++struct_name_src;
+        }
+        struct_name = malloc(strlen(struct_name_src) + 1);
+        strcpy(struct_name, struct_name_src);
+        if ((dot = strchr(struct_name, '.'))) {
+            *dot = 0;
+        }
+    }
+
+    if (!(input_size = read_input(src, &buf))) {
+        return -1;
+    }
+
+    if (!(pixmap = init_bitmap(input_size, buf))) {
+        return -1;
+    }
+    return pixmap_to_c_struct(pixmap, dest, struct_name, alpha_convertion);
+}
+
diff --git a/tools/icon_to_c.c b/tools/icon_to_c.c
new file mode 100644
index 0000000..79ae5fa
--- /dev/null
+++ b/tools/icon_to_c.c
@@ -0,0 +1,369 @@
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#define ALIGN(a, b) (((a) + ((b) - 1)) & ~((b) - 1))
+#define TRUE 1
+#define FALSE 0
+
+#define ERROR(str) printf("%s: error: %s\n", prog_name, str); exit(-1);
+
+static char *prog_name = NULL;
+
+static size_t read_input(const char *file_name, uint8_t** out_buf)
+{
+    int fd = open(file_name, O_RDONLY);
+    if (fd == -1) {
+        ERROR("open source file failed");
+        return 0;
+    }
+    struct stat file_stat;
+    if (fstat(fd, &file_stat) == -1) {
+        ERROR("fstat on source file failed");
+        return 0;
+    }
+
+    uint8_t *buf = malloc(file_stat.st_size);
+
+    if (!buf) {
+        close(fd);
+        ERROR("alloc mem failed");
+        return 0;
+    }
+
+    size_t to_read = file_stat.st_size;
+    uint8_t *buf_pos = buf;
+    while (to_read) {
+        int n = read(fd, buf_pos, to_read);
+        if (n <= 0) {
+            ERROR("read from source file failed");
+            close(fd);
+            free(buf);
+            return 0;
+        }
+        to_read -= n;
+        buf_pos += n;
+    }
+    close(fd);
+    *out_buf = buf;
+    return file_stat.st_size;
+}
+
+typedef struct __attribute__ ((__packed__)) BitmpaHeader {
+    uint32_t header_size;
+    uint32_t width;
+    uint32_t height;
+    uint16_t plans;
+    uint16_t bpp;
+    uint32_t compression;
+    uint32_t image_size;
+    uint32_t horizontal_resolution;
+    uint32_t vertical_resolution;
+    uint32_t num_colors;
+    uint32_t important_colors;
+} BitmpaHeader;
+
+
+typedef struct __attribute__ ((__packed__)) ICOHeader {
+    uint8_t width;
+    uint8_t height;
+    uint8_t colors_count;
+    uint8_t reserved;
+    uint16_t plans;
+    uint16_t bpp;
+    uint32_t bitmap_size;
+    uint32_t bitmap_offset;
+} ICOHeader;
+
+typedef struct __attribute__ ((__packed__)) ICOFileHeader {
+    uint16_t reserved;
+    uint16_t type;
+    uint16_t image_count;
+    ICOHeader directory[0];
+} ICOFileHeader;
+
+
+typedef struct Icon {
+    int width;
+    int height;
+    uint8_t* pixmap;
+    uint8_t* mask;
+} Icon;
+
+
+static Icon *init_icon(uint8_t *buf, size_t buf_size)
+{
+    ICOFileHeader *file_header;
+    int i;
+
+    uint8_t *buf_end = buf + buf_size;
+
+    if (buf_size < sizeof(ICOFileHeader)) {
+        ERROR("invalid source file");
+        return NULL;
+    }
+
+    file_header = (ICOFileHeader *)buf;
+
+    if (file_header->reserved != 0 || file_header->type != 1) {
+        ERROR("invalid icon");
+        return NULL;
+    }
+
+    if (sizeof(ICOFileHeader) + file_header->image_count * sizeof(ICOHeader) > buf_size) {
+        ERROR("invalid source file");
+    }
+
+    for (i = 0; i < file_header->image_count; i++) {
+        int j;
+
+        ICOHeader *ico = &file_header->directory[i];
+        printf("%ux%ux%u size %u\n", (unsigned)ico->width, (unsigned)ico->height,
+               (unsigned)ico->bpp, ico->bitmap_size);
+
+        if (ico->bitmap_offset + ico->bitmap_size > buf_size) {
+            ERROR("invalid source file");
+        }
+        BitmpaHeader *bitmap = (BitmpaHeader *)(buf + ico->bitmap_offset);
+        if (bitmap->header_size != 40) {
+            ERROR("invalid bitmap header");
+        }
+        if (bitmap->width != ico->width || bitmap->height != ico->height * 2 ||
+            bitmap->plans != ico->plans || bitmap->bpp != ico->bpp || !bitmap->image_size) {
+            ERROR("invalid bitmap header");
+        }
+
+        if (bitmap->compression || bitmap->horizontal_resolution || bitmap->vertical_resolution ||
+                                                   bitmap->num_colors || bitmap->important_colors) {
+            ERROR("invalid bitmap header");
+        }
+
+        if (ico->width != 32 || ico->height != 32 || ico->bpp != 32) {
+            continue;
+        }
+
+        int pixmap_size = bitmap->width * sizeof(uint32_t) * ico->height;
+        int mask_size = ALIGN(bitmap->width, 8) / 8 * ico->height;
+        Icon* icon = malloc(sizeof(*icon) + pixmap_size + mask_size);
+        icon->width = ico->width;
+        icon->height = ico->height;
+        icon->pixmap = (uint8_t *)(icon + 1);
+        icon->mask = icon->pixmap + pixmap_size;
+
+        if ((uint8_t *)(bitmap + 1) + pixmap_size + mask_size > buf_end) {
+            ERROR("invalid source file");
+        }
+        memcpy(icon->pixmap, bitmap + 1, pixmap_size);
+        memcpy(icon->mask, (uint8_t *)(bitmap + 1) + pixmap_size, mask_size);
+        for (j = 0; j < mask_size; j++) {
+            icon->mask[j] = ~icon->mask[j];
+        }
+        return icon;
+    }
+    printf("%s: missing 32x32x32\n", prog_name);
+    return NULL;
+}
+
+static inline void put_char(FILE* f, uint8_t val)
+{
+    fprintf(f, "0x%.2x,", val);
+}
+
+static int icon_to_c_struct(const Icon *icon, const char *dest_file, const char *image_name)
+{
+    int i, j;
+    int fd;
+    FILE *f;
+
+    if ((fd = open(dest_file, O_WRONLY | O_CREAT | O_TRUNC, 0644)) == -1) {
+        ERROR("open dest file failed");
+        return -1;
+    }
+
+    if (!(f = fdopen(fd, "w"))) {
+        ERROR("fdopen failed");
+        close(fd);
+        return -1;
+    }
+    uint32_t pixmap_stride = icon->width * sizeof(uint32_t);
+    uint32_t pixmap_size = pixmap_stride * icon->height;
+    uint32_t mask_stride = ALIGN(icon->width, 8) / 8;
+    uint32_t mask_size = mask_stride * icon->height;
+    fprintf(f, "static const struct {\n"
+               "\tuint32_t width;\n"
+               "\tuint32_t height;\n"
+               "\tuint8_t pixmap[%u];\n"
+               "\tuint8_t mask[%u];\n"
+               "} %s = { %u, %u, {",
+            pixmap_size, mask_size, image_name, icon->width, icon->height);
+
+    uint8_t *line = (uint8_t *)(icon->pixmap + ((icon->height - 1) * pixmap_stride));
+    int line_size = 0;
+
+    for (i = 0; i < icon->height; i++) {
+        uint8_t *now = line;
+        for (j = 0; j < icon->width; j++, now += 4) {
+            if ((line_size++ % 6) == 0) {
+                fprintf(f, "\n\t\t");
+            }
+            put_char(f, now[0]);
+            put_char(f, now[1]);
+            put_char(f, now[2]);
+            put_char(f, now[3]);
+        }
+        line -= pixmap_stride;
+    }
+
+
+    fseek(f, -1, SEEK_CUR);
+    fprintf(f, "},\n\n\t\t{");
+
+    line = (uint8_t *)(icon->mask + ((icon->height - 1) * mask_stride));
+    line_size = 0;
+    for (i = 0; i < icon->height; i++) {
+        for (j = 0; j < mask_stride; j++) {
+            if (line_size && (line_size % 12) == 0) {
+                fprintf(f, "\n\t\t ");
+            }
+            line_size++;
+            put_char(f, line[j]);
+        }
+        line -= mask_stride;
+    }
+
+    fseek(f, -1, SEEK_CUR);
+    fprintf(f, "}\n};\n");
+    fclose(f);
+    close(fd);
+    return 0;
+}
+
+enum {
+    HELP_OPT = 'h',
+    NAME_OPT = 'n',
+};
+
+static void usage()
+{
+    printf("usage: %s [--name <struct name>] SOURCE [DEST]\n", prog_name);
+    printf("       %s --help\n", prog_name);
+}
+
+const struct option longopts[] = {
+    {"help", no_argument, NULL, HELP_OPT},
+    {"name", required_argument, NULL, NAME_OPT},
+    {NULL, 0, NULL, 0},
+};
+
+int main(int argc, char **argv)
+{
+    size_t input_size;
+    uint8_t* buf;
+    Icon *icon;
+    int opt;
+    char *struct_name = NULL;
+    char *src = NULL;
+    char *dest = NULL;
+
+
+    if (!(prog_name = strrchr(argv[0], '/'))) {
+        prog_name = argv[0];
+    } else {
+        prog_name++;
+    }
+
+
+    while ((opt = getopt_long(argc, argv, "ah", longopts, NULL)) != -1) {
+        switch (opt) {
+        case 0:
+        case '?':
+            usage();
+            exit(-1);
+        case HELP_OPT:
+            usage();
+            exit(0);
+        case NAME_OPT:
+            struct_name = optarg;
+            break;
+        }
+    }
+
+    int more = argc - optind;
+    switch (more) {
+    case 1: {
+        char *slash;
+        char *dot;
+
+        dest = malloc(strlen(argv[optind]) + 3);
+        strcpy(dest, argv[optind]);
+        dot = strrchr(dest, '.');
+        slash = strrchr(dest, '/');
+        if (!dot || (slash && slash > dot)) {
+            strcat(dest, ".c");
+        } else {
+            strcpy(dot, ".c");
+        }
+        break;
+    }
+    case 2:
+        dest = argv[optind + 1];
+        //todo: if dir strcat src name
+        break;
+    default:
+        usage();
+        exit(-1);
+    }
+
+    src = argv[optind];
+
+    if (!struct_name) {
+        char *struct_name_src;
+        char *dot;
+
+        struct_name_src = strrchr(dest, '/');
+        if (!struct_name_src) {
+            struct_name_src = dest;
+        } else {
+            ++struct_name_src;
+        }
+        struct_name = malloc(strlen(struct_name_src) + 1);
+        strcpy(struct_name, struct_name_src);
+        if ((dot = strchr(struct_name, '.'))) {
+            *dot = 0;
+        }
+    }
+
+    if (!(input_size = read_input(src, &buf))) {
+        return -1;
+    }
+
+    if (!(icon = init_icon(buf, input_size))) {
+        return -1;
+    }
+
+    return icon_to_c_struct(icon, dest, struct_name);
+}
+
diff --git a/tools/reds_stat.c b/tools/reds_stat.c
new file mode 100644
index 0000000..7654157
--- /dev/null
+++ b/tools/reds_stat.c
@@ -0,0 +1,132 @@
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "reds_stat.h"
+
+#define TAB_LEN 4
+#define VALUE_TABS 7
+#define INVALID_STAT_REF (~(uint32_t)0)
+
+static RedsStat *reds_stat = NULL;
+static uint64_t *values = NULL;
+
+void print_stat_tree(int32_t node_index, int depth)
+{
+    StatNode *node = &reds_stat->nodes[node_index];
+    int i;
+
+    if ((node->flags & STAT_NODE_MASK_SHOW) == STAT_NODE_MASK_SHOW) {
+        printf("%*s%s", depth * TAB_LEN, "", node->name);
+        if (node->flags & STAT_NODE_FLAG_VALUE) {
+            printf(":%*s%llu (%llu)\n", (VALUE_TABS - depth) * TAB_LEN - strlen(node->name) - 1, "",
+                   node->value, node->value - values[node_index]);
+            values[node_index] = node->value;
+        } else {
+            printf("\n");
+            if (node->first_child_index != INVALID_STAT_REF) {
+                print_stat_tree(node->first_child_index, depth + 1);
+            }
+        }
+    }
+    if (node->next_sibling_index != INVALID_STAT_REF) {
+        print_stat_tree(node->next_sibling_index, depth);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    char *shm_name;
+    pid_t kvm_pid;
+    uint64_t *val;
+    uint32_t num_of_nodes = 0;
+    size_t shm_size;
+    size_t shm_old_size;
+    int shm_name_len;
+    int ret = -1;
+    int fd;
+
+    if (argc != 2 || !(kvm_pid = atoi(argv[1]))) {
+        printf("usage: reds_stat [qemu_pid] (e.g. `pgrep qemu`)\n");
+        return -1;
+    }
+    shm_name_len = strlen(REDS_STAT_SHM_NAME) + strlen(argv[1]);
+    if (!(shm_name = (char *)malloc(shm_name_len))) {
+        perror("malloc");
+        return -1;
+    }
+    snprintf(shm_name, shm_name_len, REDS_STAT_SHM_NAME, kvm_pid);
+    if ((fd = shm_open(shm_name, O_RDONLY, 0444)) == -1) {
+        perror("shm_open");
+        free(shm_name);
+        return -1;
+    }
+    shm_size = sizeof(RedsStat);
+    reds_stat = mmap(NULL, shm_size, PROT_READ, MAP_SHARED, fd, 0);
+    if (reds_stat == (RedsStat *)MAP_FAILED) {
+        perror("mmap");
+        goto error1;
+    }
+    if (reds_stat->magic != REDS_STAT_MAGIC) {
+        printf("bad magic %u\n", reds_stat->magic);
+        goto error2;
+    }
+    if (reds_stat->version != REDS_STAT_VERSION) {
+        printf("bad version %u\n", reds_stat->version);
+        goto error2;
+    }
+    while (1) {
+        system("clear");
+        printf("spice statistics\n\n");
+        if (num_of_nodes != reds_stat->num_of_nodes) {
+            num_of_nodes = reds_stat->num_of_nodes;
+            shm_old_size = shm_size;
+            shm_size = sizeof(RedsStat) + num_of_nodes * sizeof(StatNode);
+            reds_stat = mremap(reds_stat, shm_old_size, shm_size, MREMAP_MAYMOVE);
+            if (reds_stat == (RedsStat *)MAP_FAILED) {
+                perror("mremap");
+                goto error3;
+            }
+            values = (uint64_t *)realloc(values, num_of_nodes * sizeof(uint64_t));
+            if (values == NULL) {
+                perror("realloc");
+                goto error3;
+            }
+            memset(values, 0, num_of_nodes * sizeof(uint64_t));
+        }
+        print_stat_tree(reds_stat->root_index, 0);
+        sleep(1);
+    }
+    ret = 0;
+
+error3:
+    free(values);
+error2:
+    munmap(reds_stat, shm_size);
+error1:
+    shm_unlink(shm_name);
+    free(shm_name);
+    return ret;
+}
+