C++ (Cpp) _check_valid_version_preprocessor_string Beispiele

Beispiel #1

Datei: gstglsl.c Projekt: craftyjon/gst-plugins-bad

/* returns the pointer in @str to the #version declaration */
const gchar *
_gst_glsl_shader_string_find_version (const gchar * str)
{
  gboolean sl_comment = FALSE;
  gboolean ml_comment = FALSE;
  gboolean newline = TRUE;
  gint i = 0;

  /* search for #version while allowing for preceeding comments/whitespace as
   * permitted by the GLSL specification */
  while (str && str[i] != '\0' && i < 1024) {
    if (str[i] == '\n' || str[i] == '\r') {
      newline = TRUE;
      sl_comment = FALSE;
      i++;
      continue;
    }

    if (g_ascii_isspace (str[i]))
      goto next;

    if (sl_comment)
      goto next;

    if (ml_comment) {
      if (g_strstr_len (&str[i], 2, "*/")) {
        ml_comment = FALSE;
        i++;
      }
      goto next;
    }

    if (g_strstr_len (&str[i], 2, "//")) {
      sl_comment = TRUE;
      i++;
      goto next;
    }

    if (g_strstr_len (&str[i], 2, "/*")) {
      ml_comment = TRUE;
      i++;
      goto next;
    }

    if (str[i] == '#') {
      if (newline && _check_valid_version_preprocessor_string (&str[i]))
        return &str[i];
      break;
    }

  next:
    newline = FALSE;
    i++;
  }

  return NULL;
}

Beispiel #2

Datei: gstglsl.c Projekt: craftyjon/gst-plugins-bad

gboolean
gst_glsl_version_profile_from_string (const gchar * string,
    GstGLSLVersion * version_ret, GstGLSLProfile * profile_ret)
{
  gchar *str, *version_s, *profile_s;
  GstGLSLVersion version;
  GstGLSLProfile profile;
  gint i;

  if (!string)
    goto error;

  str = g_strdup (string);
  version_s = g_strstrip (str);

  /* skip possible #version prefix */
  if (str[0] == '#') {
    if (!(version_s =
            (gchar *) _check_valid_version_preprocessor_string (version_s)))
      goto error;
  }

  version_s = g_strstrip (version_s);

  i = 0;
  while (version_s && version_s[i] != '\0' && g_ascii_isdigit (version_s[i]))
    i++;
  /* wrong version length */
  if (i != 3) {
    g_free (str);
    goto error;
  }

  version_s[i] = '\0';
  i++;
  profile_s = &version_s[i];
  profile_s = g_strstrip (profile_s);

  profile = gst_glsl_profile_from_string (profile_s);
  version = gst_glsl_version_from_string (version_s);
  g_free (str);

  /* check whether the parsed data is valid */
  if (!version)
    goto error;
  if (!_is_valid_version_profile (version, profile))
    goto error;
  /* got a profile when none was expected */
  if (version <= GST_GLSL_VERSION_150 && profile != GST_GLSL_PROFILE_NONE)
    goto error;

  _fixup_version_profile (&version, &profile);

  if (profile_ret)
    *profile_ret = profile;
  if (version_ret)
    *version_ret = version;

  return TRUE;

error:
  {
    if (profile_ret)
      *profile_ret = GST_GLSL_PROFILE_NONE;
    if (version_ret)
      *version_ret = GST_GLSL_VERSION_NONE;
    return FALSE;
  }
}

Beispiel #3

Datei: gstglsl.c Projekt: alessandrod/gst-plugins-bad

gboolean
gst_glsl_version_profile_from_string (const gchar * string,
    GstGLSLVersion * version_ret, GstGLSLProfile * profile_ret)
{
  gchar *str, *version_s, *profile_s;
  GstGLSLVersion version = GST_GLSL_VERSION_NONE;
  GstGLSLProfile profile = GST_GLSL_PROFILE_NONE;
  gint i;

  _init_debug ();

  if (!string)
    goto error;

  str = g_strdup (string);
  version_s = g_strstrip (str);

  /* skip possible #version prefix */
  if (str[0] == '#') {
    if (!(version_s =
            (gchar *) _check_valid_version_preprocessor_string (version_s))) {
      GST_WARNING ("Invalid preprocesser directive detected: %s", version_s);
      g_free (str);
      goto error;
    }
  }

  version_s = g_strstrip (version_s);

  i = 0;
  while (version_s && version_s[i] != '\0' && g_ascii_isdigit (version_s[i]))
    i++;
  /* wrong version length */
  if (i != 3) {
    GST_WARNING ("version number has the wrong number of digits: %s",
        version_s);
    g_free (str);
    goto error;
  }

  if (version_s[i] != 0) {
    version_s[i] = '\0';
    i++;
    profile_s = &version_s[i];
    profile_s = g_strstrip (profile_s);

    profile = gst_glsl_profile_from_string (profile_s);
  }
  version = gst_glsl_version_from_string (version_s);
  g_free (str);

  /* check whether the parsed data is valid */
  if (!version) {
    GST_WARNING ("Could not map the version number to a valid GLSL version:");
    goto error;
  }
  if (!_is_valid_version_profile (version, profile)) {
    GST_WARNING ("Invalid version/profile combination specified: %s %s",
        gst_glsl_version_to_string (version),
        gst_glsl_profile_to_string (profile));
    goto error;
  }
  /* got a profile when none was expected */
  if (version <= GST_GLSL_VERSION_140 && profile != GST_GLSL_PROFILE_NONE) {
    GST_WARNING
        ("Found a profile (%s) with a version (%s) that does not support "
        "profiles", gst_glsl_version_to_string (version),
        gst_glsl_profile_to_string (profile));
    goto error;
  }

  _fixup_version_profile (&version, &profile);

  if (profile_ret)
    *profile_ret = profile;
  if (version_ret)
    *version_ret = version;

  return TRUE;

error:
  {
    if (profile_ret)
      *profile_ret = GST_GLSL_PROFILE_NONE;
    if (version_ret)
      *version_ret = GST_GLSL_VERSION_NONE;
    return FALSE;
  }
}