Change license, improve makefile, remove dist/

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

1 files changed, 443 insertions, 0 deletions

diff --git a/libgamma-facade.cc b/libgamma-facade.cc
new file mode 100644
index 0000000..9d74d6f
--- /dev/null
+++ b/libgamma-facade.cc
@@ -0,0 +1,443 @@
+/* See LICENSE file for copyright and license details. */
+#include "libgamma-facade.hh"
+
+#include "libgamma-error.hh"
+
+#include <cstdlib>
+
+
+namespace libgamma
+{
+  /**
+   * List available adjustment methods by their order of preference based on the environment.
+   * 
+   * @param  operation  Allowed values:
+   *                      0: Methods that the environment suggests will work, excluding fake.
+   *                      1: Methods that the environment suggests will work, including fake.
+   *                      2: All real non-fake methods.
+   *                      3: All real methods.
+   *                      4: All methods.
+   *                    Other values invoke undefined behaviour.
+   * @return            Array of methods.
+   */
+  std::vector<int> list_methods(int operation)
+  {
+    int* methods = (int*)malloc(LIBGAMMA_METHOD_COUNT * sizeof(int));
+    size_t n, i;
+    std::vector<int> rc;
+    
+    n = libgamma_list_methods(methods, LIBGAMMA_METHOD_COUNT, operation);
+    if (n > LIBGAMMA_METHOD_COUNT)
+      {
+	free(methods);
+	methods = (int*)malloc(n * sizeof(int));
+	libgamma_list_methods(methods, n, operation);
+      }
+    
+    for (i = 0; i < n; i++)
+      rc.push_back(methods[i]);
+    
+    free(methods);
+    return rc;
+  }
+  
+  /**
+   * Check whether an adjustment method is available, non-existing (invalid) methods will be
+   * identified as not available under the rationale that the library may be out of date.
+   * 
+   * @param   method  The adjustment method.
+   * @return          Whether the adjustment method is available.
+   */
+  int is_method_available(int method)
+  {
+    return libgamma_is_method_available(method);
+  }
+  
+  /**
+   * Return the capabilities of an adjustment method.
+   * 
+   * @param  output  The data structure to fill with the method's capabilities,
+   * @param  method  The adjustment method (display server and protocol).
+   */
+  void method_capabilities(MethodCapabilities* output, int method)
+  {
+    libgamma_method_capabilities_t caps;
+    libgamma_method_capabilities(&caps, method);
+    *output = MethodCapabilities(&caps);
+  }
+  
+  /**
+   * Return the default site for an adjustment method.
+   * 
+   * @param   method  The adjustment method (display server and protocol.)
+   * @return          The default site, `nullptr` if it cannot be determined or if
+   *                  multiple sites are not supported by the adjustment method.
+   */
+  std::string* method_default_site(int method)
+  {
+    char* cstr = libgamma_method_default_site(method);
+    if (cstr == nullptr)
+      return nullptr;
+    return new std::string(cstr);
+  }
+  
+  /**
+   * Return the default variable that determines
+   * the default site for an adjustment method.
+   * 
+   * @param   method  The adjustment method (display server and protocol.)
+   * @return          The environ variables that is used to determine the
+   *                  default site. `nullptr` if there is none, that is, if
+   *                  the method does not support multiple sites.
+   *                  This value should not be `free`:d.
+   */
+  std::string* method_default_site_variable(int method)
+  {
+    const char* cstr = libgamma_method_default_site_variable(method);
+    if (cstr == nullptr)
+      return nullptr;
+    return new std::string(cstr);
+  }
+  
+  
+  /**
+   * Convert a raw representation of an EDID to a lowercase hexadecimal representation.
+   * 
+   * @param   edid    The EDID in raw representation.
+   * @param   length  The length of `edid`.
+   * @return          The EDID in lowercase hexadecimal representation.
+   */
+  std::string behex_edid(const unsigned char* edid, size_t length)
+  {
+    return behex_edid_lowercase(edid, length);
+  }
+  
+  /**
+   * Convert a raw representation of an EDID to a lowercase hexadecimal representation.
+   * 
+   * @param   edid    The EDID in raw representation.
+   * @param   length  The length of `edid`.
+   * @return          The EDID in lowercase hexadecimal representation.
+   */
+  std::string behex_edid_lowercase(const unsigned char* edid, size_t length)
+  {
+    char* cstr = libgamma_behex_edid_lowercase(edid, length);
+    std::string rc = std::string(cstr);
+    free(cstr);
+    return rc;
+  }
+  
+  /**
+   * Convert a raw representation of an EDID to an uppercase hexadecimal representation.
+   * 
+   * @param   edid    The EDID in raw representation.
+   * @param   length  The length of `edid`.
+   * @return          The EDID in uppercase hexadecimal representation.
+   */
+  std::string behex_edid_uppercase(const unsigned char* edid, size_t length)
+  {
+    char* cstr = libgamma_behex_edid_uppercase(edid, length);
+    std::string rc = std::string(cstr);
+    free(cstr);
+    return rc;
+  }
+  
+  /**
+   * Convert an hexadecimal representation of an EDID to a raw representation.
+   * 
+   * @param   edid  The EDID in hexadecimal representation.
+   * @return        The EDID in raw representation, it will be half the length
+   *                of `edid` (the input value).
+   */
+  unsigned char* unhex_edid(const std::string edid)
+  {
+    const char* cstr = edid.c_str();
+    return libgamma_unhex_edid(cstr);
+  }
+  
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_ramps8_initialise(GammaRamps<uint8_t>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps8_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = 8;
+    r = libgamma_gamma_ramps8_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_ramps16_initialise(GammaRamps<uint16_t>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps16_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = 16;
+    r = libgamma_gamma_ramps16_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_ramps32_initialise(GammaRamps<uint32_t>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps32_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = 32;
+    r = libgamma_gamma_ramps32_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_ramps64_initialise(GammaRamps<uint64_t>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps64_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = 64;
+    r = libgamma_gamma_ramps64_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_rampsf_initialise(GammaRamps<float>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_rampsf_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = -1;
+    r = libgamma_gamma_rampsf_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  /**
+   * Initialise a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param  ramps  The gamma ramp to initialise.
+   * @param  red    The size of the gamma ramp for the red channel.
+   * @param  green  The size of the gamma ramp for the green channel.
+   * @param  blue   The size of the gamma ramp for the blue channel.
+   */
+  void gamma_rampsd_initialise(GammaRamps<double>* ramps, size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_rampsd_t native;
+    int r;
+    native.red_size   = ramps->red.size   = red;
+    native.green_size = ramps->green.size = green;
+    native.blue_size  = ramps->blue.size  = blue;
+    ramps->depth = -2;
+    r = libgamma_gamma_rampsd_initialise(&native);
+    if (r != 0)
+      throw create_error(r);
+    ramps->red.ramp   = native.red;
+    ramps->green.ramp = native.green;
+    ramps->blue.ramp  = native.blue;
+  }
+  
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<uint8_t>* gamma_ramps8_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps8_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_ramps8_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<uint8_t>(ramps.red, ramps.green, ramps.blue, red, green, blue, 8);
+  }
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<uint16_t>* gamma_ramps16_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps16_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_ramps16_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<uint16_t>(ramps.red, ramps.green, ramps.blue, red, green, blue, 16);
+  }
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<uint32_t>* gamma_ramps32_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps32_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_ramps32_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<uint32_t>(ramps.red, ramps.green, ramps.blue, red, green, blue, 32);
+  }
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<uint64_t>* gamma_ramps64_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_ramps64_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_ramps64_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<uint64_t>(ramps.red, ramps.green, ramps.blue, red, green, blue, 64);
+  }
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<float>* gamma_rampsf_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_rampsf_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_rampsf_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<float>(ramps.red, ramps.green, ramps.blue, red, green, blue, -1);
+  }
+  
+  /**
+   * Create a gamma ramp in the proper way that allows all adjustment
+   * methods to read from and write to it without causing segmentation violation.
+   * 
+   * @param   red    The size of the gamma ramp for the red channel.
+   * @param   green  The size of the gamma ramp for the green channel.
+   * @param   blue   The size of the gamma ramp for the blue channel.
+   * @return         The gamma ramp.
+   */
+  GammaRamps<double>* gamma_rampsd_create(size_t red, size_t blue, size_t green)
+  {
+    libgamma_gamma_rampsd_t ramps;
+    int r;
+    ramps.red_size = red;
+    ramps.green_size = green;
+    ramps.blue_size = blue;
+    r = libgamma_gamma_rampsd_initialise(&ramps);
+    if (r != 0)
+      throw create_error(r);
+    return new GammaRamps<double>(ramps.red, ramps.green, ramps.blue, red, green, blue, -2);
+  }
+  
+}
+