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-rw-r--r--cg-icc.c928
1 files changed, 928 insertions, 0 deletions
diff --git a/cg-icc.c b/cg-icc.c
new file mode 100644
index 0000000..61bcdb6
--- /dev/null
+++ b/cg-icc.c
@@ -0,0 +1,928 @@
+/* See LICENSE file for copyright and license details. */
+#include "cg-base.h"
+
+#include <libclut.h>
+
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+
+/* Note, that EDID:s are 256 hexadecimals long, and
+ * a filename can only be 255 characters long. */
+
+
+
+/**
+ * Magic number for dual-byte precision lookup table based profiles
+ */
+#define MLUT_TAG 0x6D4C5554L
+
+/**
+ * Magic number for gamma–brightness–contrast based profiles
+ * and for variable precision lookup table profiles
+ */
+#define VCGT_TAG 0x76636774L
+
+/**
+ * The filename of the configuration file
+ */
+#define ICCTAB "icctab"
+
+
+
+/**
+ * The default filter priority for the program
+ */
+const int64_t default_priority = 0;
+
+/**
+ * The default class for the program
+ */
+char default_class[] = PKGNAME "::cg-icc::standard";
+
+/**
+ * Class suffixes
+ */
+const char* const* class_suffixes = (const char* const[]){NULL};
+
+
+
+/**
+ * -d: keep process alive and remove filter on death
+ */
+static int dflag = 0;
+
+/**
+ * -x: remove filter rather than adding it
+ */
+static int xflag = 0;
+
+/**
+ * The panhame of the selected ICC profile
+ */
+static const char* icc_pathname = NULL;
+
+/**
+ * Gamma ramps loaded from `icc_pathname`
+ */
+static libcoopgamma_ramps_t uniramps;
+
+/**
+ * The datatype of the stops in the ramps of `uniramps`
+ */
+static libcoopgamma_depth_t unidepth = 0;
+
+/**
+ * Parsed ICC profiles for each CRTC
+ */
+static libcoopgamma_ramps_t* rampses = NULL;
+
+/**
+ * The datatype of the stops in the ramps of
+ * corresponding element in `rampses`
+ */
+static libcoopgamma_depth_t* depths = NULL;
+
+/**
+ * File descriptor for configuration directory
+ */
+static int confdirfd = -1;
+
+/**
+ * List of CRTC:s
+ */
+static char** crtc_icc_keys = NULL;
+
+/**
+ * List of ICC profile pathnames for corresponding
+ * CRTC in `crtc_icc_keys`
+ */
+static char** crtc_icc_values = NULL;
+
+
+
+/**
+ * Print usage information and exit
+ */
+void usage(void)
+{
+ fprintf(stderr,
+ "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] "
+ "(-x | [-p priority] [-d] [file])\n",
+ argv0);
+ exit(1);
+}
+
+
+/**
+ * Perform cleanup so valgrind output is clean
+ *
+ * @param ret The value to return
+ * @return `ret` is returned as is
+ */
+static int cleanup(int ret)
+{
+ int saved_errno = errno;
+ size_t i;
+ libcoopgamma_ramps_destroy(&uniramps);
+ if (confdirfd >= 0)
+ close(confdirfd);
+ if (rampses != NULL)
+ for (i = 0; i < crtcs_n; i++)
+ libcoopgamma_ramps_destroy(rampses + i);
+ free(rampses);
+ free(depths);
+ if (crtc_icc_keys != NULL)
+ for (i = 0; crtc_icc_keys[i] != NULL; i++)
+ free(crtc_icc_keys[i]);
+ free(crtc_icc_keys);
+ if (crtc_icc_values != NULL)
+ for (i = 0; crtc_icc_values[i] != NULL; i++)
+ free(crtc_icc_values[i]);
+ free(crtc_icc_values);
+ errno = saved_errno;
+ return ret;
+}
+
+
+/**
+ * Handle a command line option
+ *
+ * @param opt The option, it is a NUL-terminate two-character
+ * string starting with either '-' or '+', if the
+ * argument is not recognised, call `usage`. This
+ * string will not be "-M", "-S", "-c", "-p", or "-R".
+ * @param arg The argument associated with `opt`,
+ * `NULL` there is no next argument, if this
+ * parameter is `NULL` but needed, call `usage`
+ * @return 0 if `arg` was not used,
+ * 1 if `arg` was used,
+ * -1 on error
+ */
+int handle_opt(char* opt, char* arg)
+{
+ if (opt[0] == '-')
+ switch (opt[1])
+ {
+ case 'd':
+ if (dflag || xflag)
+ usage();
+ dflag = 1;
+ break;
+ case 'x':
+ if (xflag || dflag)
+ usage();
+ xflag = 1;
+ break;
+ default:
+ usage();
+ }
+ return 0;
+ (void) arg;
+}
+
+
+/**
+ * Populate `crtc_icc_keys` and `crtc_icc_value`
+ *
+ * @path fd File descriptor for the ICC profile table
+ * @path dirname The dirname of the ICC profile table
+ * @return Zero on success, -1 on error
+ */
+static int load_icc_table(int fd, const char *dirname)
+{
+ FILE *fp;
+ ssize_t len;
+ size_t lineno = 1, size = 0;
+ char *p, *q, *line = NULL;
+ int saved_errno;
+ size_t ptr = 0, siz = 0;
+ void *new;
+ size_t dirname_len = strlen(dirname);
+ fp = fdopen(fd, "rb");
+ if (fp == NULL)
+ return -1;
+ for (; len = getline(&line, &size, fp), len >= 0; lineno++)
+ {
+ if (len && line[len - 1] == '\n')
+ line[--len] = '\0';
+ p = line + strspn(line, " \t");
+ if (!*p || (*p == '#'))
+ continue;
+ q = p + strspn(p, "0123456789abcdefABCDEF");
+ if ((*q != ' ' && *q != '\t'))
+ {
+ fprintf(stderr, "%s: warning: line %zu is malformated in %s/%s\n",
+ argv0, lineno, dirname, ICCTAB);
+ continue;
+ }
+ *q = '\0';
+ if ((size_t)(q - p) != 256)
+ fprintf(stderr, "%s: warning: EDID on line %zu in %s/%s looks to be of wrong length: %s\n",
+ argv0, lineno, dirname, ICCTAB, p);
+ q++;
+ q += strspn(p, " \t");
+ if (!*q)
+ {
+ fprintf(stderr, "%s: warning: line %zu is malformated in %s/%s\n",
+ argv0, lineno, dirname, ICCTAB);
+ continue;
+ }
+ if (strchr(" \t", strchr(q, '\0')[-1]))
+ fprintf(stderr, "%s: warning: filename on line %zu in %s/%s ends with white space: %s\n",
+ argv0, lineno, dirname, ICCTAB, q);
+ if (ptr == siz)
+ {
+ new = realloc(crtc_icc_keys, (siz + 5) * sizeof(*crtc_icc_keys));
+ if (new == NULL)
+ goto fail;
+ crtc_icc_keys = new;
+ new = realloc(crtc_icc_values, (siz + 5) * sizeof(*crtc_icc_values));
+ if (new == NULL)
+ goto fail;
+ crtc_icc_values = new;
+ siz += 4;
+ }
+ crtc_icc_values[ptr] = malloc((*q == '/' ? 1 : dirname_len + sizeof("/")) + strlen(q));
+ if (crtc_icc_values[ptr] == NULL)
+ goto fail;
+ if (*q == '/')
+ strcpy(crtc_icc_values[ptr], q);
+ else
+ stpcpy(stpcpy(stpcpy(crtc_icc_values[ptr], dirname), "/"), q);
+ crtc_icc_keys[ptr] = malloc(strlen(p) + 1);
+ if (crtc_icc_keys[ptr] == NULL)
+ {
+ ptr++;
+ goto fail;
+ }
+ strcpy(crtc_icc_keys[ptr], p);
+ ptr++;
+ }
+ if (ferror(fp))
+ goto fail;
+ if (crtc_icc_keys != NULL)
+ crtc_icc_keys[ptr] = NULL;
+ if (crtc_icc_values != NULL)
+ crtc_icc_values[ptr] = NULL;
+ fclose(fp);
+ free(line);
+ return 0;
+ fail:
+ saved_errno = errno;
+ if (crtc_icc_keys != NULL)
+ crtc_icc_keys[ptr] = NULL;
+ if (crtc_icc_values != NULL)
+ crtc_icc_values[ptr] = NULL;
+ fclose(fp);
+ free(line);
+ errno = saved_errno;
+ return -1;
+}
+
+
+/**
+ * This function is called after the last
+ * call to `handle_opt`
+ *
+ * @param argc The number of unparsed arguments
+ * @param argv `NULL` terminated list of unparsed arguments
+ * @param prio The argument associated with the "-p" option
+ * @return Zero on success, -1 on error
+ */
+int handle_args(int argc, char* argv[], char* prio)
+{
+ struct passwd* pw;
+ char* path = NULL;
+ int saved_errno;
+ int fd = -1, q = xflag + dflag;
+ if ((q > 1) || (xflag && ((argc > 0) || (prio != NULL))) || (argc > 1))
+ usage();
+ icc_pathname = *argv;
+ memset(&uniramps, 0, sizeof(uniramps));
+ if (!xflag && (icc_pathname == NULL))
+ {
+ pw = getpwuid(getuid());
+ if ((pw == NULL) || (pw->pw_dir == NULL))
+ goto fail;
+
+ path = malloc(strlen(pw->pw_dir) + sizeof("/.config"));
+ if (path == NULL)
+ goto fail;
+
+ sprintf(path, "%s/.config", pw->pw_dir);
+
+ if (access(path, F_OK) < 0)
+ sprintf(path, "/etc");
+
+ confdirfd = open(path, O_DIRECTORY);
+ if (confdirfd < 0)
+ goto fail;
+
+ fd = openat(confdirfd, ICCTAB, O_RDONLY);
+ if (fd < 0)
+ goto fail;
+
+ if (load_icc_table(fd, path) < 0)
+ goto fail;
+
+ free(path), path = NULL;
+ close(fd), fd = -1;
+ }
+ return 0;
+ fail:
+ saved_errno = errno;
+ free(path), path = NULL;
+ if (fd >= 0)
+ close(fd);
+ errno = saved_errno;
+ return cleanup(-1);
+}
+
+
+/**
+ * Read an unsigned 64-bit integer
+ *
+ * @param content The beginning of the encoded integer
+ * @return The integer, decoded
+ */
+static uint64_t icc_uint64(const char* restrict content)
+{
+ uint64_t rc;
+ rc = (uint64_t)(unsigned char)(content[0]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[1]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[2]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[3]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[4]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[5]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[6]), rc <<= 8;
+ rc |= (uint64_t)(unsigned char)(content[7]);
+ return rc;
+}
+
+
+/**
+ * Read an unsigned 32-bit integer
+ *
+ * @param content The beginning of the encoded integer
+ * @return The integer, decoded
+ */
+static uint32_t icc_uint32(const char* restrict content)
+{
+ uint32_t rc;
+ rc = (uint32_t)(unsigned char)(content[0]), rc <<= 8;
+ rc |= (uint32_t)(unsigned char)(content[1]), rc <<= 8;
+ rc |= (uint32_t)(unsigned char)(content[2]), rc <<= 8;
+ rc |= (uint32_t)(unsigned char)(content[3]);
+ return rc;
+}
+
+
+/**
+ * Read an unsigned 16-bit integer
+ *
+ * @param content The beginning of the encoded integer
+ * @return The integer, decoded
+ */
+static uint16_t icc_uint16(const char* restrict content)
+{
+ uint16_t rc;
+ rc = (uint16_t)(unsigned char)(content[0]), rc <<= 8;
+ rc |= (uint16_t)(unsigned char)(content[1]);
+ return rc;
+}
+
+
+/**
+ * Read an unsigned 8-bit integer
+ *
+ * @param content The beginning of the encoded integer
+ * @return The integer, decoded
+ */
+static uint16_t icc_uint8(const char* restrict content)
+{
+ return (uint8_t)(content[0]);
+}
+
+
+/**
+ * Read a floating-point value
+ *
+ * @param content The beginning of the encoded value
+ * @param width The number of bytes with which the value is encoded
+ * @return The value, decoded
+ */
+static double icc_double(const char* restrict content, size_t width)
+{
+ double ret = 0;
+ size_t i;
+ for (i = 0; i < width; i++)
+ {
+ ret /= 256;
+ ret += (double)(unsigned char)(content[width - 1 - i]);
+ }
+ ret /= 255;
+ return ret;
+}
+
+
+/**
+ * Parse an ICC profile
+ *
+ * @param content The content of the ICC profile file
+ * @param n The byte-size of `content`
+ * @param ramps Output parameter for the filter stored in the ICC profile,
+ * `.red_size`, `.green_size`, `.blue_size` should already be
+ * set (these values can however be modified.)
+ * @param depth Output parameter for ramps stop value type
+ * @return Zero on success, -1 on error, -2 if no usable data is
+ * available in the profile.
+ */
+static int parse_icc(const char* restrict content, size_t n, libcoopgamma_ramps_t* ramps,
+ libcoopgamma_depth_t* depth)
+{
+ uint32_t i_tag, n_tags;
+ size_t i, ptr = 0, xptr;
+
+ /* Skip header */
+ if (n - ptr < 128)
+ return -2;
+ ptr += 128;
+
+ /* Get the number of tags */
+ if (n - ptr < 4)
+ return -2;
+ n_tags = icc_uint32(content + ptr), ptr += 4;
+
+ for (i_tag = 0, xptr = ptr; i_tag < n_tags; i_tag++, ptr = xptr)
+ {
+ uint32_t tag_name, tag_offset, tag_size, gamma_type;
+
+ /* Get profile encoding type, offset to the profile and the encoding size of its data */
+ if (n - ptr < 12)
+ return -2;
+ tag_name = icc_uint32(content + ptr), ptr += 4;
+ tag_offset = icc_uint32(content + ptr), ptr += 4;
+ tag_size = icc_uint32(content + ptr), ptr += 4;
+ xptr = ptr;
+
+ /* Jump to the profile data */
+ if (tag_offset > INT32_MAX - tag_size)
+ return -2;
+ if (tag_offset + tag_size > n)
+ return -2;
+ ptr = tag_offset;
+
+ if (tag_name == MLUT_TAG)
+ {
+ /* The profile is encododed as an dual-byte precision lookup table */
+
+ /* Initialise ramps */
+ *depth = LIBCOOPGAMMA_UINT16;
+ ramps->u16.red_size = 256;
+ ramps->u16.green_size = 256;
+ ramps->u16.blue_size = 256;
+ if (libcoopgamma_ramps_initialise(&(ramps->u16)) < 0)
+ return -1;
+
+ /* Get the lookup table */
+ if (n - ptr < 3 * 256 * 2)
+ continue;
+ for (i = 0; i < 256; i++)
+ ramps->u16.red[i] = icc_uint16(content + ptr), ptr += 2;
+ for (i = 0; i < 256; i++)
+ ramps->u16.green[i] = icc_uint16(content + ptr), ptr += 2;
+ for (i = 0; i < 256; i++)
+ ramps->u16.blue[i] = icc_uint16(content + ptr), ptr += 2;
+
+ return 0;
+ }
+ else if (tag_name == VCGT_TAG)
+ {
+ /* The profile is encoded as with gamma, brightness and contrast values
+ * or as a variable precision lookup table profile */
+
+ /* VCGT profiles starts where their magic number */
+ if (n - ptr < 4)
+ continue;
+ tag_name = icc_uint32(content + ptr), ptr += 4;
+ if (tag_name != VCGT_TAG)
+ continue;
+
+ /* Skip four bytes */
+ if (n - ptr < 4)
+ continue;
+ ptr += 4;
+
+ /* Get the actual encoding type */
+ if (n - ptr < 4)
+ continue;
+ gamma_type = icc_uint32(content + ptr), ptr += 4;
+
+ if (gamma_type == 0)
+ {
+ /* The profile is encoded as a variable precision lookup table */
+ uint16_t n_channels, n_entries, entry_size;
+
+ /* Get metadata */
+ if (n - ptr < 3 * 4)
+ continue;
+ n_channels = icc_uint16(content + ptr), ptr += 2;
+ n_entries = icc_uint16(content + ptr), ptr += 2;
+ entry_size = icc_uint16(content + ptr), ptr += 2;
+ if (tag_size == 1584)
+ n_channels = 3, n_entries = 256, entry_size = 2;
+ if (n_channels != 3)
+ /* Assuming sRGB, can only be an correct assumption if there are exactly three channels */
+ continue;
+
+ /* Check data availability */
+ if (n_channels > SIZE_MAX / n_entries)
+ continue;
+ if (entry_size > SIZE_MAX / (n_entries * n_channels))
+ continue;
+ if (n - ptr < (size_t)n_channels * (size_t)n_entries * (size_t)entry_size)
+ continue;
+
+ /* Initialise ramps */
+ ramps->u8.red_size = (size_t)n_entries;
+ ramps->u8.green_size = (size_t)n_entries;
+ ramps->u8.blue_size = (size_t)n_entries;
+ switch (entry_size)
+ {
+ case 1:
+ *depth = LIBCOOPGAMMA_UINT8;
+ if (libcoopgamma_ramps_initialise(&(ramps->u8)) < 0)
+ return -1;
+ break;
+ case 2:
+ *depth = LIBCOOPGAMMA_UINT16;
+ if (libcoopgamma_ramps_initialise(&(ramps->u16)) < 0)
+ return -1;
+ break;
+ case 4:
+ *depth = LIBCOOPGAMMA_UINT32;
+ if (libcoopgamma_ramps_initialise(&(ramps->u32)) < 0)
+ return -1;
+ break;
+ case 8:
+ *depth = LIBCOOPGAMMA_UINT64;
+ if (libcoopgamma_ramps_initialise(&(ramps->u64)) < 0)
+ return -1;
+ break;
+ default:
+ *depth = LIBCOOPGAMMA_DOUBLE;
+ if (libcoopgamma_ramps_initialise(&(ramps->d)) < 0)
+ return -1;
+ break;
+ }
+
+ /* Get the lookup table */
+ switch (*depth)
+ {
+ case LIBCOOPGAMMA_UINT8:
+ for (i = 0; i < ramps->u8.red_size; i++)
+ ramps->u8.red[i] = icc_uint8(content + ptr), ptr += 1;
+ for (i = 0; i < ramps->u8.green_size; i++)
+ ramps->u8.green[i] = icc_uint8(content + ptr), ptr += 1;
+ for (i = 0; i < ramps->u8.blue_size; i++)
+ ramps->u8.blue[i] = icc_uint8(content + ptr), ptr += 1;
+ break;
+ case LIBCOOPGAMMA_UINT16:
+ for (i = 0; i < ramps->u16.red_size; i++)
+ ramps->u16.red[i] = icc_uint16(content + ptr), ptr += 2;
+ for (i = 0; i < ramps->u16.green_size; i++)
+ ramps->u16.green[i] = icc_uint16(content + ptr), ptr += 2;
+ for (i = 0; i < ramps->u16.blue_size; i++)
+ ramps->u16.blue[i] = icc_uint16(content + ptr), ptr += 2;
+ break;
+ case LIBCOOPGAMMA_UINT32:
+ for (i = 0; i < ramps->u32.red_size; i++)
+ ramps->u32.red[i] = icc_uint32(content + ptr), ptr += 4;
+ for (i = 0; i < ramps->u32.green_size; i++)
+ ramps->u32.green[i] = icc_uint32(content + ptr), ptr += 4;
+ for (i = 0; i < ramps->u32.blue_size; i++)
+ ramps->u32.blue[i] = icc_uint32(content + ptr), ptr += 4;
+ break;
+ case LIBCOOPGAMMA_UINT64:
+ for (i = 0; i < ramps->u64.red_size; i++)
+ ramps->u64.red[i] = icc_uint64(content + ptr), ptr += 8;
+ for (i = 0; i < ramps->u64.green_size; i++)
+ ramps->u64.green[i] = icc_uint64(content + ptr), ptr += 8;
+ for (i = 0; i < ramps->u64.blue_size; i++)
+ ramps->u64.blue[i] = icc_uint64(content + ptr), ptr += 8;
+ break;
+ default:
+ for (i = 0; i < ramps->d.red_size; i++)
+ ramps->d.red[i] = icc_double(content + ptr, entry_size), ptr += entry_size;
+ for (i = 0; i < ramps->d.green_size; i++)
+ ramps->d.green[i] = icc_double(content + ptr, entry_size), ptr += entry_size;
+ for (i = 0; i < ramps->d.blue_size; i++)
+ ramps->d.blue[i] = icc_double(content + ptr, entry_size), ptr += entry_size;
+ break;
+ }
+
+ return 0;
+ }
+ else if (gamma_type == 1)
+ {
+ /* The profile is encoded with gamma, brightness and contrast values */
+ double r_gamma, r_min, r_max, g_gamma, g_min, g_max, b_gamma, b_min, b_max;
+
+ /* Get the gamma, brightness and contrast */
+ if (n - ptr < 9 * 4)
+ continue;
+ r_gamma = icc_uint32(content + ptr), r_gamma /= 65536L, ptr += 4;
+ r_min = icc_uint32(content + ptr), r_min /= 65536L, ptr += 4;
+ r_max = icc_uint32(content + ptr), r_max /= 65536L, ptr += 4;
+ g_gamma = icc_uint32(content + ptr), g_gamma /= 65536L, ptr += 4;
+ g_min = icc_uint32(content + ptr), g_min /= 65536L, ptr += 4;
+ g_max = icc_uint32(content + ptr), g_max /= 65536L, ptr += 4;
+ b_gamma = icc_uint32(content + ptr), b_gamma /= 65536L, ptr += 4;
+ b_min = icc_uint32(content + ptr), b_min /= 65536L, ptr += 4;
+ b_max = icc_uint32(content + ptr), b_max /= 65536L, ptr += 4;
+
+ /* Initialise ramps */
+ *depth = LIBCOOPGAMMA_DOUBLE;
+ if (libcoopgamma_ramps_initialise(&(ramps->d)) < 0)
+ return -1;
+
+ /* Set ramps */
+ libclut_start_over(&(ramps->d), (double)1, double, 1, 1, 1);
+ libclut_gamma(&(ramps->d), (double)1, double, r_gamma, g_gamma, b_gamma);
+ libclut_rgb_limits(&(ramps->d), (double)1, double, r_min, r_max, g_min, g_max, b_min, b_max);
+
+ return 0;
+ }
+ }
+ }
+
+ return -2;
+}
+
+
+/**
+ * Load an ICC profile
+ *
+ * @param file The ICC-profile file
+ * @param ramps Output parameter for the filter stored in the ICC profile,
+ * `.red_size`, `.green_size`, `.blue_size` should already be
+ * set (these values can however be modified.)
+ * @param depth Output parameter for ramps stop value type
+ * @return Zero on success, -1 on error, -2 if no usable data is
+ * available in the profile.
+ */
+static int load_icc(const char* file, libcoopgamma_ramps_t* ramps, libcoopgamma_depth_t* depth)
+{
+ char* content = NULL;
+ size_t ptr = 0, size = 0;
+ ssize_t got;
+ int fd = -1, r = -1, saved_errno;
+
+ fd = open(file, O_RDONLY);
+ if (fd < 0)
+ {
+ if (errno == ENOENT)
+ {
+ fprintf(stderr, "%s: %s: %s\n", argv0, strerror(ENOENT), file);
+ errno = 0;
+ }
+ goto fail;
+ }
+
+ for (;;)
+ {
+ if (ptr == size)
+ {
+ size_t new_size = size ? (size << 1) : 4098;
+ void* new = realloc(content, new_size);
+ if (new == NULL)
+ goto fail;
+ content = new;
+ size = new_size;
+ }
+ got = read(fd, content + ptr, size - ptr);
+ if (got < 0)
+ {
+ if (errno == EINTR)
+ continue;
+ goto fail;
+ }
+ if (got == 0)
+ break;
+ ptr += (size_t)got;
+ }
+
+ close(fd), fd = -1;
+
+ r = parse_icc(content, ptr, ramps, depth);
+ fail:
+ saved_errno = errno;
+ if (fd >= 0)
+ close(fd);
+ free(content);
+ errno = saved_errno;
+ return r;
+}
+
+
+/**
+ * Get the pathname of the ICC profile for a CRTC
+ *
+ * @param crtc The CRTC name
+ * @return The ICC profile file
+ */
+static const char* get_icc(const char* crtc)
+{
+ size_t i;
+ if (crtc_icc_keys != NULL)
+ for (i = 0; crtc_icc_keys[i] != NULL; i++)
+ if (!strcasecmp(crtc, crtc_icc_keys[i]))
+ return crtc_icc_values[i];
+ return NULL;
+}
+
+
+/**
+ * Fill a filter
+ *
+ * @param filter The filter to fill
+ * @param ramps The prototype filter
+ * @param depth The prototype filter's stop datatype
+ */
+static void fill_filter(libcoopgamma_filter_t* filter, const libcoopgamma_ramps_t* ramps,
+ libcoopgamma_depth_t depth)
+{
+ switch (filter->depth)
+ {
+#define X(CONST, MEMBER, MAX, TYPE)\
+ case CONST:\
+ switch (depth)\
+ {\
+ case LIBCOOPGAMMA_UINT8:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->u8), UINT8_MAX, uint8_t);\
+ break;\
+ case LIBCOOPGAMMA_UINT16:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->u16), UINT16_MAX, uint16_t);\
+ break;\
+ case LIBCOOPGAMMA_UINT32:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->u32), UINT32_MAX, uint32_t);\
+ break;\
+ case LIBCOOPGAMMA_UINT64:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->u64), UINT64_MAX, uint64_t);\
+ break;\
+ case LIBCOOPGAMMA_FLOAT:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->f), (float)1, float);\
+ break;\
+ case LIBCOOPGAMMA_DOUBLE:\
+ libclut_translate(&(filter->ramps.MEMBER), MAX, TYPE, &(ramps->d), (double)1, double);\
+ break;\
+ }\
+ break;
+LIST_DEPTHS
+#undef X
+ default:
+ abort();
+ }
+}
+
+
+/**
+ * The main function for the program-specific code
+ *
+ * @return 0: Success
+ * -1: Error, `errno` set
+ * -2: Error, `cg.error` set
+ * -3: Error, message already printed
+ */
+int start(void)
+{
+ int r;
+ size_t i, j;
+ const char* path;
+
+ if (xflag)
+ for (i = 0; i < crtcs_n; i++)
+ crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_REMOVE;
+ else if (dflag)
+ for (i = 0; i < crtcs_n; i++)
+ crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_DEATH;
+ else
+ for (i = 0; i < crtcs_n; i++)
+ crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_REMOVAL;
+
+ if (!xflag && (icc_pathname == NULL))
+ if ((r = make_slaves()) < 0)
+ return cleanup(r);
+
+ if (icc_pathname != NULL)
+ {
+ uniramps.u8.red_size = uniramps.u8.green_size = uniramps.u8.blue_size = 1;
+ for (i = 0; i < crtcs_n; i++)
+ {
+ if (uniramps.u8.red_size < crtc_updates[i].filter.ramps.u8.red_size)
+ uniramps. u8.red_size = crtc_updates[i].filter.ramps.u8.red_size;
+ if (uniramps.u8.green_size < crtc_updates[i].filter.ramps.u8.green_size)
+ uniramps. u8.green_size = crtc_updates[i].filter.ramps.u8.green_size;
+ if (uniramps.u8.blue_size < crtc_updates[i].filter.ramps.u8.blue_size)
+ uniramps. u8.blue_size = crtc_updates[i].filter.ramps.u8.blue_size;
+ }
+ switch (load_icc(icc_pathname, &uniramps, &unidepth))
+ {
+ case 0:
+ break;
+ case -1:
+ return cleanup(-1);
+ case -2:
+ fprintf(stderr, "%s: unusable ICC profile: %s\n", argv0, icc_pathname);
+ return cleanup(-3);
+ }
+ }
+ else
+ {
+ rampses = calloc(crtcs_n, sizeof(*rampses));
+ if (rampses == NULL)
+ return cleanup(-1);
+ depths = malloc(crtcs_n * sizeof(*depths));
+ if (depths == NULL)
+ return cleanup(-1);
+ for (i = 0; i < crtcs_n; i++)
+ {
+ rampses[i].u8.red_size = crtc_updates[i].filter.ramps.u8.red_size;
+ rampses[i].u8.green_size = crtc_updates[i].filter.ramps.u8.green_size;
+ rampses[i].u8.blue_size = crtc_updates[i].filter.ramps.u8.blue_size;
+ path = get_icc(crtc_updates[i].filter.crtc);
+ if (path == NULL)
+ {
+ /* TODO remove CRTC */
+ }
+ else
+ switch (load_icc(path, rampses + i, depths + i))
+ {
+ case 0:
+ break;
+ case -1:
+ return cleanup(-1);
+ case -2:
+ fprintf(stderr, "%s: unusable ICC profile: %s\n", argv0, path);
+ return cleanup(-3);
+ }
+ }
+ }
+
+ for (i = 0, r = 1; i < crtcs_n; i++)
+ {
+ if (!(crtc_updates[i].master) || !(crtc_info[i].supported))
+ continue;
+ if (!xflag)
+ {
+ if (icc_pathname != NULL)
+ fill_filter(&(crtc_updates[i].filter), &uniramps, unidepth);
+ else
+ fill_filter(&(crtc_updates[i].filter), rampses + i, depths[i]);
+ }
+ r = update_filter(i, 0);
+ if ((r == -2) || ((r == -1) && (errno != EAGAIN)))
+ return cleanup(r);
+ if (crtc_updates[i].slaves != NULL)
+ for (j = 0; crtc_updates[i].slaves[j] != 0; j++)
+ {
+ r = update_filter(crtc_updates[i].slaves[j], 0);
+ if ((r == -2) || ((r == -1) && (errno != EAGAIN)))
+ return cleanup(r);
+ }
+ }
+
+ while (r != 1)
+ if ((r = synchronise(-1)) < 0)
+ return cleanup(r);
+
+ if (!dflag)
+ return cleanup(0);
+
+ if (libcoopgamma_set_nonblocking(&cg, 0) < 0)
+ return cleanup(-1);
+ for (;;)
+ if (libcoopgamma_synchronise(&cg, NULL, 0, &j) < 0)
+ switch (errno)
+ {
+ case 0:
+ break;
+ case ENOTRECOVERABLE:
+ goto enotrecoverable;
+ default:
+ return cleanup(-1);
+ }
+
+ enotrecoverable:
+ for (;;)
+ if (pause() < 0)
+ return cleanup(-1);
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-19 00:58:37 +0000