Reorganise, change license, portable makefile, and reference radharc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 497 insertions, 0 deletions

diff --git a/cg-query.c b/cg-query.c
new file mode 100644
index 0000000..8532599
--- /dev/null
+++ b/cg-query.c
@@ -0,0 +1,497 @@
+/* See LICENSE file for copyright and license details. */
+#include "arg.h"
+
+#include <libcoopgamma.h>
+
+#include <errno.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+
+/**
+ * The libcoopgamma context
+ */
+static libcoopgamma_context_t cg;
+
+/**
+ * Filter query
+ */
+static libcoopgamma_filter_query_t query;
+
+/**
+ * The class of the filter to print
+ */
+static char* class = NULL;
+
+
+
+/**
+ * Print usage information and exit
+ */
+static void usage(void)
+{
+  fprintf(stderr,
+	  "Usage: %s [-M method] [-S site] [-h high] [-l low] [-f class] -c crtc\n",
+	  argv0);
+  exit(1);
+}
+
+
+/**
+ * Initialise the process, specifically
+ * reset the signal mask and signal handlers
+ * 
+ * @return  Zero on success, -1 on error
+ */
+static int initialise_proc(void)
+{
+  sigset_t sigmask;
+  int sig;
+  
+  for (sig = 1; sig < _NSIG; sig++)
+    if (signal(sig, SIG_DFL) == SIG_ERR)
+      if (sig == SIGCHLD)
+	return -1;
+  
+  if (sigemptyset(&sigmask) < 0)
+    return -1;
+  if (sigprocmask(SIG_SETMASK, &sigmask, NULL) < 0)
+    return -1;
+  
+  return 0;
+}
+
+
+/**
+ * Print, to stdout, a list of all
+ * recognised adjustment methods
+ * 
+ * @return  Zero on success, -1 on error
+ */
+static int list_methods(void)
+{
+  char** list;
+  size_t i;
+  
+  list = libcoopgamma_get_methods();
+  if (list == NULL)
+    return -1;
+  for (i = 0; list[i]; i++)
+    printf("%s\n", list[i]);
+  free(list);
+  if (fflush(stdout) < 0)
+    return -1;
+  
+  return 0;
+}
+
+
+/**
+ * Print, to stdout, a list of all CRTC:s
+ * 
+ * A connection to the coopgamma server
+ * must have been made
+ * 
+ * @return  Zero on success, -1 on error, -2
+ *          on libcoopgamma error
+ */
+static int list_crtcs(void)
+{
+  char** list;
+  size_t i;
+  
+  list = libcoopgamma_get_crtcs_sync(&cg);
+  if (list == NULL)
+    return -2;
+  for (i = 0; list[i]; i++)
+    printf("%s\n", list[i]);
+  free(list);
+  if (fflush(stdout) < 0)
+    return -1;
+  
+  return 0;
+}
+
+
+/**
+ * Print, to stdout, information about
+ * the selected CRTC
+ * 
+ * @return  Zero on success, -1 on error, -2
+ *          on libcoopgamma error, -3 on error
+ *          with error message already printed
+ */
+static int print_info(void)
+{
+  libcoopgamma_crtc_info_t info;
+  libcoopgamma_filter_table_t table;
+  const char* str;
+  int saved_errno, ret = 0;
+  size_t i;
+  
+  if (libcoopgamma_crtc_info_initialise(&info) < 0)
+    return -1;
+  if (libcoopgamma_filter_table_initialise(&table) < 0)
+    {
+      saved_errno = errno;
+      libcoopgamma_crtc_info_destroy(&info);
+      errno = saved_errno;
+      return -1;
+    }
+  
+  if (libcoopgamma_get_gamma_info_sync(query.crtc, &info, &cg) < 0)
+    goto cg_fail;
+  
+  printf("Cooperative gamma server running: %s\n",
+	 info.cooperative ? "yes" : "no");
+  
+  printf("Gamma adjustments supported: %s\n",
+	 info.supported == LIBCOOPGAMMA_MAYBE ? "maybe" : info.supported ? "yes" : "no");
+  
+  printf("Gamma ramps stops (red green blue): %zu %zu %zu\n",
+	 info.red_size, info.green_size, info.blue_size);
+  
+  switch (info.depth)
+    {
+    case LIBCOOPGAMMA_DOUBLE:  str = "double-precision floating-point";  break;
+    case LIBCOOPGAMMA_FLOAT:   str = "single-precision floating-point";  break;
+    case LIBCOOPGAMMA_UINT8:   str = "unsigned 8-bit integer";           break;
+    case LIBCOOPGAMMA_UINT16:  str = "unsigned 16-bit integer";          break;
+    case LIBCOOPGAMMA_UINT32:  str = "unsigned 32-bit integer";          break;
+    case LIBCOOPGAMMA_UINT64:  str = "unsigned 64-bit integer";          break;
+    default:
+      errno = EPROTO;
+      goto fail;
+    }
+  printf("Gamma ramps stops value type: %s\n", str);
+  
+  if (info.colourspace != LIBCOOPGAMMA_UNKNOWN)
+    {
+      switch (info.colourspace)
+	{
+	case LIBCOOPGAMMA_SRGB:     str = "sRGB";                              break;
+	case LIBCOOPGAMMA_RGB:      str = "non-standard RGB";                  break;
+	case LIBCOOPGAMMA_NON_RGB:  str = "non-RGB multicolour";               break;
+	case LIBCOOPGAMMA_GREY:     str = "monochrome or singlecolour scale";  break;
+	default:
+	  errno = EPROTO;
+	  goto fail;
+	}
+      printf("Monitor's colourspace: %s\n", str);
+    }
+  
+  if (info.have_gamut)
+    {
+      printf("Monitor's red colour (x, y): %lf, %lf\n",
+	     info.red_x / (double)1024, info.red_y / (double)1024);
+      
+      printf("Monitor's green colour (x, y): %lf, %lf\n",
+	     info.green_x / (double)1024, info.green_y / (double)1024);
+      
+      printf("Monitor's blue colour (x, y): %lf, %lf\n",
+	     info.blue_x / (double)1024, info.blue_y / (double)1024);
+      
+      printf("Monitor's white point (x, y): %lf, %lf\n",
+	     info.white_x / (double)1024, info.white_y / (double)1024);
+    }
+  
+  if (libcoopgamma_get_gamma_sync(&query, &table, &cg) < 0)
+    goto cg_fail;
+  
+  if ((table.red_size != info.red_size) || (table.green_size != info.green_size) ||
+      (table.blue_size != info.blue_size) || (table.depth != info.depth))
+    {
+      fprintf(stderr, "%s: gamma ramp structure changed between queries\n", argv0);
+      goto custom_fail;
+    }
+  
+  printf("Filters: %zu\n", table.filter_count);
+  for (i = 0; i < table.filter_count; i++)
+    {
+      printf("  Filter %zu:\n", i);
+      printf("    Priority: %" PRIi64 "\n", table.filters[i].priority);
+      printf("    Class: %s\n", table.filters[i].class);
+    }
+  
+ done:
+  saved_errno = errno;
+  libcoopgamma_crtc_info_destroy(&info);
+  libcoopgamma_filter_table_destroy(&table);
+  errno = saved_errno;
+  return ret;
+ fail:
+  ret = -1;
+  goto done;
+ cg_fail:
+  ret = -2;
+  goto done;
+ custom_fail:
+  ret = -3;
+  goto done;
+}
+
+
+
+/**
+ * Print, to stdout, the ramps of the select
+ * filter on the select CRTC
+ * 
+ * @return  Zero on success, -1 on error, -2
+ *          on libcoopgamma error, -3 on error
+ *          with error message already printed
+ */
+static int print_filter(void)
+{
+  libcoopgamma_filter_table_t table;
+  libcoopgamma_ramps_t* restrict ramps;
+  int saved_errno, ret = 0;
+  size_t i, n;
+  
+  if (libcoopgamma_filter_table_initialise(&table) < 0)
+    return -1;
+  
+  if (libcoopgamma_get_gamma_sync(&query, &table, &cg) < 0)
+    goto cg_fail;
+  
+  if (query.coalesce)
+    i = 0;
+  else
+    for (i = 0; i < table.filter_count; i++)
+      if (!strcmp(table.filters[i].class, class))
+	break;
+  if (i == table.filter_count)
+    {
+      fprintf(stderr, "%s: selected filter does not exist on selected CRTC\n", argv0);
+      goto custom_fail;
+    }
+  ramps = &(table.filters[i].ramps);
+  
+  n = table.red_size;
+  if (n < table.green_size)
+    n = table.green_size;
+  if (n < table.blue_size)
+    n = table.blue_size;
+  
+  switch (table.depth)
+    {
+#define X(CONST, MEMBER, TYPE, FORMAT, DASH)				\
+    case CONST:								\
+      for (i = 0; i < n; i++)						\
+	{								\
+	  if (i < ramps->MEMBER.red_size)				\
+	    printf("%" FORMAT " ", (TYPE)(ramps->MEMBER.red[i]));	\
+	  else								\
+	    printf(DASH " ");						\
+	  if (i < ramps->MEMBER.green_size)				\
+	    printf("%" FORMAT " ", (TYPE)(ramps->MEMBER.green[i]));	\
+	  else								\
+	    printf(DASH " ");						\
+	  if (i < ramps->MEMBER.blue_size)				\
+	    printf("%" FORMAT "\n", (TYPE)(ramps->MEMBER.blue[i]));	\
+	  else								\
+	    printf(DASH "\n");						\
+	}								\
+      break
+    X(LIBCOOPGAMMA_DOUBLE, d,   double,   "lf",         "----");
+    X(LIBCOOPGAMMA_FLOAT,  f,   double,   "lf",         "----");
+    X(LIBCOOPGAMMA_UINT8,  u8,  uint8_t,  "02"  PRIx8,  "--");
+    X(LIBCOOPGAMMA_UINT16, u16, uint16_t, "04"  PRIx16, "----");
+    X(LIBCOOPGAMMA_UINT32, u32, uint32_t, "08"  PRIx32, "--------");
+    X(LIBCOOPGAMMA_UINT64, u64, uint64_t, "016" PRIx64, "----------------");
+#undef X
+    default:
+      errno = EPROTO;
+      goto fail;
+    }
+  
+ done:
+  saved_errno = errno;
+  libcoopgamma_filter_table_destroy(&table);
+  errno = saved_errno;
+  return ret;
+ fail:
+  ret = -1;
+  goto done;
+ cg_fail:
+  ret = -2;
+  goto done;
+ custom_fail:
+  ret = -3;
+  goto done;
+}
+
+
+/**
+ * -M METHOD
+ *     Select adjustment method. If METHOD is "?",
+ *     available methods will be printed to stdout.
+ * 
+ * -S SITE
+ *     Select site (display server instance).
+ * 
+ * -c CRTC
+ *     Select CRT controller. If CRTC is "?", CRTC:s
+ *     will be printed to stdout.
+ * 
+ * -h HIGH
+ *     Suppress filter with higher priority than HIGH.
+ * 
+ * -l LOW
+ *     Suppress filter with lower priority than LOW.
+ * 
+ * -f CLASS
+ *     Print gamma ramps of the filter with class CLASS
+ *     on the selected CRTC. If CLASS is "*" all filters
+ *     with a priority in [LOW, HIGH] are coalesced.
+ * 
+ * @param   argc  The number of command line arguments
+ * @param   argv  The command line arguments
+ * @return        0 on success, 1 on error
+ */
+int main(int argc, char* argv[])
+{
+  int stage = 0, haveh = 0, havel = 0;
+  int rc = 0;
+  char* method = NULL;
+  char* site = NULL;
+  
+  query.high_priority = INT64_MAX;
+  query.low_priority = INT64_MIN;
+  query.crtc = NULL;
+  query.coalesce = 0;
+  
+  ARGBEGIN
+    {
+    case 'M':
+      if (method != NULL)
+	usage();
+      method = EARGF(usage());
+      break;
+    case 'S':
+      if (site != NULL)
+	usage();
+      site = EARGF(usage());
+      break;
+    case 'c':
+      if (query.crtc != NULL)
+	usage();
+      query.crtc = EARGF(usage());
+      break;
+    case 'h':
+      if (haveh++)
+	usage();
+      query.high_priority = (int64_t)atoll(EARGF(usage()));
+      break;
+    case 'l':
+      if (havel++)
+	usage();
+      query.low_priority = (int64_t)atoll(EARGF(usage()));
+      break;
+    case 'f':
+      if (class != NULL)
+	usage();
+      class = EARGF(usage());
+      if ((class[0] == '*') && (class[1] == '\0'))
+	query.coalesce = 1;
+      break;
+    default:
+      usage();
+    }
+  ARGEND;
+  
+  if (argc)
+    usage();
+  
+  if (initialise_proc() < 0)
+    goto fail;
+  
+  if ((method != NULL) && !strcmp(method, "?"))
+    {
+      if ((site != NULL) || (query.crtc != NULL))
+	usage();
+      if (list_methods() < 0)
+	goto fail;
+      return 0;
+    }
+  
+  if (libcoopgamma_context_initialise(&cg) < 0)
+    goto fail;
+  stage++;
+  if (libcoopgamma_connect(method, site, &cg) < 0)
+    {
+      fprintf(stderr, "%s: server failed to initialise\n", argv0);
+      goto custom_fail;
+    }
+  stage++;
+  
+  if (!(query.crtc))
+    usage();
+  
+  if (!strcmp(query.crtc, "?"))
+    switch (list_crtcs())
+      {
+      case 0:
+	goto done;
+      case -1:
+	goto fail;
+      default:
+	goto cg_fail;
+      }
+  
+  switch (class ? print_filter() : print_info())
+    {
+    case 0:
+      goto done;
+    case -1:
+      goto fail;
+    case -2:
+      goto cg_fail;
+    default:
+      goto custom_fail;
+    }
+  
+  fflush(stdout);
+  if (ferror(stdout))
+    goto fail;
+  if (fclose(stdout) < 0)
+    goto fail;
+  
+ done:
+  if (stage >= 1)
+    libcoopgamma_context_destroy(&cg, stage >= 2);
+  return rc;
+  
+ custom_fail:
+  rc = 1;
+  goto done;
+  
+ fail:
+  rc = 1;
+  perror(argv0);
+  goto done;
+  
+ cg_fail:
+  rc = 1;
+  {
+    const char* side = cg.error.server_side ? "server" : "client";
+    if (cg.error.custom)
+      {
+	if ((cg.error.number != 0) || (cg.error.description != NULL))
+	  fprintf(stderr, "%s: %s-side error number %" PRIu64 ": %s\n",
+		  argv0, side, cg.error.number, cg.error.description);
+	else if (cg.error.number != 0)
+	  fprintf(stderr, "%s: %s-side error number %" PRIu64 "\n", argv0, side, cg.error.number);
+	else if (cg.error.description != NULL)
+	  fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
+      }
+    else if (cg.error.description != NULL)
+      fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description);
+    else
+      fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, strerror(cg.error.number));
+  }
+  goto done;
+}