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More hacking on gst_structure_from_string() and related code.

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Original commit message from CVS:
More hacking on gst_structure_from_string() and related code.
This commit is contained in:
David Schleef 2003-11-29 00:12:24 +00:00
parent d3eb290996
commit 15e96d0be3
2 changed files with 358 additions and 107 deletions
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346
gst/gststructure.c
View file

@ -947,16 +947,32 @@ gst_structure_to_string(const GstStructure *structure)
g_string_append_printf(s, "\"%s\"", g_quark_to_string(structure->name));
for(i=0;i<structure->fields->len;i++){
GValue s_val = { 0 };
GType type;
field = GST_STRUCTURE_FIELD(structure, i);
g_value_init(&s_val, G_TYPE_STRING);
g_value_transform (&field->value, &s_val);
g_value_transform(&field->value, &s_val);
type = G_VALUE_TYPE (&field->value);
if (type == GST_TYPE_LIST) {
GPtrArray *ptr_array = g_value_peek_pointer (&field->value);
if (ptr_array->len > 0){
GValue *value = g_ptr_array_index (ptr_array, 0);
type = G_VALUE_TYPE (value);
} else {
type = G_TYPE_INT;
}
} else if (G_VALUE_TYPE(&field->value) == GST_TYPE_INT_RANGE) {
type = G_TYPE_INT;
} else if (G_VALUE_TYPE(&field->value) == GST_TYPE_DOUBLE_RANGE) {
type = G_TYPE_DOUBLE;
}
g_string_append_printf(s, ", %s:%s=%s", g_quark_to_string(field->name),
_gst_structure_to_abbr(G_VALUE_TYPE(&field->value)),
g_value_get_string(&s_val));
g_value_unset(&s_val);
_gst_structure_to_abbr(type), g_value_get_string(&s_val));
g_value_unset (&s_val);
}
return g_string_free(s, FALSE);
}
@ -1027,6 +1043,212 @@ error:
return FALSE;
}
static gboolean
_gst_structure_parse_value (gchar *s, gchar **after, GType type,
GValue *value)
{
gboolean ret = FALSE;
gchar *val;
gchar *end;
if (type == G_TYPE_INVALID) return FALSE;
while (g_ascii_isspace (*s)) s++;
g_value_init(value, type);
val = s;
switch (type) {
case G_TYPE_INT:
{
int x;
x = strtol (val, &s, 0);
if (val != s) {
g_value_set_int (value, x);
ret = TRUE;
}
}
break;
case G_TYPE_FLOAT:
{
double x;
x = g_ascii_strtod (val, &s);
if (val != s) {
g_value_set_float (value, x);
ret = TRUE;
}
}
break;
case G_TYPE_DOUBLE:
{
double x;
x = g_ascii_strtod (val, &s);
if (val != s) {
g_value_set_double (value, x);
ret = TRUE;
}
}
break;
case G_TYPE_BOOLEAN:
{
int len;
ret = _gst_structure_parse_string (val, &end, &s);
len = end - val;
if (ret && len > 0) {
if (g_ascii_strncasecmp (val, "true", len) == 0 ||
g_ascii_strncasecmp (val, "yes", len) == 0 ||
g_ascii_strncasecmp (val, "t", len) == 0 ||
strncmp (val, "1", len)) {
g_value_set_boolean (value, TRUE);
} else if (g_ascii_strncasecmp (val, "false", len) == 0 ||
g_ascii_strncasecmp (val, "no", len) == 0 ||
g_ascii_strncasecmp (val, "f", len) == 0 ||
strncmp (val, "0", len)) {
g_value_set_boolean (value, FALSE);
} else {
ret = FALSE;
}
}
}
break;
case G_TYPE_STRING:
{
ret = _gst_structure_parse_string (val, &end, &s);
if (ret) {
g_value_set_string_take_ownership (value,
g_strndup(val, end - val));
ret = TRUE;
}
}
break;
default:
/* FIXME: make more general */
if (type == GST_TYPE_FOURCC) {
guint32 fourcc = 0;
if (g_ascii_isdigit (*s)) {
fourcc = strtoul (val, &s, 0);
if (val != s) {
ret = TRUE;
}
} else {
ret = _gst_structure_parse_string (val, &end, &s);
g_print("end - val = %d\n", end - val);
if (end - val >= 4) {
fourcc = GST_MAKE_FOURCC(val[0], val[1], val[2], val[3]);
ret = TRUE;
}
}
gst_value_set_fourcc (value, fourcc);
} else {
g_critical("type %s not handled", g_type_name(type));
}
break;
}
*after = s;
return ret;
}
static gboolean
_gst_structure_parse_range (gchar *s, gchar **after, GType type,
GValue *value)
{
GValue value1 = { 0 };
GValue value2 = { 0 };
GType range_type;
gboolean ret;
if (type == G_TYPE_DOUBLE) {
range_type = GST_TYPE_DOUBLE_RANGE;
} else if (type == G_TYPE_INT) {
range_type = GST_TYPE_INT_RANGE;
} else {
return FALSE;
}
g_print("%d \"%s\"\n", __LINE__, s);
if (*s != '[') return FALSE;
s++;
g_print("%d \"%s\"\n", __LINE__, s);
ret = _gst_structure_parse_value(s, &s, type, &value1);
if (ret == FALSE) return FALSE;
while (g_ascii_isspace (*s)) s++;
g_print("%d \"%s\"\n", __LINE__, s);
if (*s != ',') return FALSE;
s++;
while (g_ascii_isspace (*s)) s++;
g_print("%d \"%s\"\n", __LINE__, s);
ret = _gst_structure_parse_value(s, &s, type, &value2);
if (ret == FALSE) return FALSE;
while (g_ascii_isspace (*s)) s++;
g_print("%d \"%s\"\n", __LINE__, s);
if (*s != ']') return FALSE;
s++;
g_value_init(value, range_type);
if (range_type == GST_TYPE_DOUBLE_RANGE) {
gst_value_set_double_range(value, g_value_get_double(&value1),
g_value_get_double(&value2));
} else {
gst_value_set_int_range(value, g_value_get_int(&value1),
g_value_get_int(&value2));
}
*after = s;
return TRUE;
}
static gboolean
_gst_structure_parse_list (gchar *s, gchar **after, GType type, GValue *value)
{
GValue list_value = { 0 };
gboolean ret;
g_value_init(value, GST_TYPE_LIST);
if (*s != '(') return FALSE;
s++;
while (g_ascii_isspace (*s)) s++;
if (*s == ')') {
s++;
*after = s;
return TRUE;
}
ret = _gst_structure_parse_value(s, &s, type, &list_value);
if (ret == FALSE) return FALSE;
while (g_ascii_isspace (*s)) s++;
while (*s != ')') {
if (*s != ',') return FALSE;
s++;
while (g_ascii_isspace (*s)) s++;
memset (&list_value, 0, sizeof (list_value));
ret = _gst_structure_parse_value(s, &s, type, &list_value);
if (ret == FALSE) return FALSE;
while (g_ascii_isspace (*s)) s++;
}
s++;
*after = s;
return TRUE;
}
static gboolean
_gst_structure_parse_field (gchar *str, gchar **after, GstStructureField *field)
{
@ -1034,8 +1256,6 @@ _gst_structure_parse_field (gchar *str, gchar **after, GstStructureField *field)
gchar *name;
gchar *type_name;
gchar *s, *del;
gchar *val;
gchar *end;
gboolean have_type = FALSE;
GType type = G_TYPE_INVALID;
int ret;
@ -1071,7 +1291,8 @@ g_print("type n is \"%s\"\n",g_type_name(type));
if (type == G_TYPE_INVALID) return FALSE;
} else {
if (g_ascii_isdigit (*s)) {
if (g_ascii_isdigit (*s) ||
((*s == '-' || *s == '+') && g_ascii_isdigit (s[1]))) {
char *t = s;
while (g_ascii_isdigit (*t)) t++;
if (*t == '.'){
@ -1081,99 +1302,15 @@ g_print("type n is \"%s\"\n",g_type_name(type));
}
} else if (g_ascii_isalpha (*s) || *s == '"' || *s == '\'') {
type = G_TYPE_STRING;
} else {
/* FIXME */
return FALSE;
}
}
g_value_init(&field->value, type);
ret = FALSE;
val = s;
switch (type) {
case G_TYPE_INT:
{
int x;
x = strtol (val, &s, 0);
if (val != s) {
g_value_set_int (&field->value, x);
ret = TRUE;
}
}
break;
case G_TYPE_FLOAT:
{
double x;
x = g_ascii_strtod (val, &s);
if (val != s) {
g_value_set_float (&field->value, x);
ret = TRUE;
}
}
break;
case G_TYPE_DOUBLE:
{
double x;
x = g_ascii_strtod (val, &s);
if (val != s) {
g_value_set_double (&field->value, x);
ret = TRUE;
}
}
break;
case G_TYPE_BOOLEAN:
{
int len;
ret = _gst_structure_parse_string (val, &end, &s);
len = end - val;
if (ret) {
if (strncmp (val, "true", len) == 0 ||
strncmp (val, "yes", len) == 0 ||
(len == 1 && (*val == 't' || *val == '1'))) {
g_value_set_boolean (&field->value, TRUE);
} else if (strncmp (val, "false", len) == 0 ||
strncmp (val, "no", len) == 0 ||
(len == 1 && (*val == 'f' || *val == '0'))) {
g_value_set_boolean (&field->value, FALSE);
} else {
ret = FALSE;
}
}
}
break;
case G_TYPE_STRING:
{
ret = _gst_structure_parse_string (val, &end, &s);
if (ret) {
g_value_set_string_take_ownership (&field->value,
g_strndup(val, end - val));
ret = TRUE;
}
}
break;
default:
/* FIXME: make more general */
if (type == GST_TYPE_FOURCC) {
guint32 fourcc = 0;
if (g_ascii_isdigit (*s)) {
fourcc = strtoul (val, &s, 0);
if (val != s) {
ret = TRUE;
}
} else {
ret = _gst_structure_parse_string (val, &end, &s);
g_print("end - val = %d\n", end - val);
if (end - val >= 4) {
fourcc = GST_MAKE_FOURCC(val[0], val[1], val[2], val[3]);
ret = TRUE;
}
}
gst_value_set_fourcc (&field->value, fourcc);
} else {
g_critical("not handled");
}
break;
if (*s == '[') {
ret = _gst_structure_parse_range (s, &s, type, &field->value);
} else if (*s == '(') {
ret = _gst_structure_parse_list (s, &s, type, &field->value);
} else {
ret = _gst_structure_parse_value(s, &s, type, &field->value);
}
*after = s;
@ -1210,18 +1347,22 @@ gst_structure_from_string (const gchar *string, gchar **end)
res = _gst_structure_parse_string (r, &w, &r);
if (!res) return NULL;
while (*r && g_ascii_isspace(*r)) r++;
if(!*r) return NULL;
if(*r != ';' && *r != ',') return NULL;
if(*r == ',') r++;
while (g_ascii_isspace(*r)) r++;
if(*r != 0 && *r != ';' && *r != ',') return NULL;
save = *w;
*w = 0;
structure = gst_structure_empty_new(name);
*w = save;
while (*r && g_ascii_isspace(*r)) r++;
while (*r && (*r != ';')){
if(*r != ',') {
return NULL;
}
r++;
while (*r && g_ascii_isspace(*r)) r++;
memset(&field,0,sizeof(field));
res = _gst_structure_parse_field (r, &r, &field);
g_print("returned %d \"%s\"\n", res, r);
if (!res) {
@ -1229,6 +1370,7 @@ g_print("returned %d \"%s\"\n", res, r);
return NULL;
}
gst_structure_set_field(structure, &field);
while (*r && g_ascii_isspace(*r)) r++;
}
if (end) *end = (char *)string + (r - copy);

119
gst/gstvalue.c
View file

@ -436,6 +436,42 @@ gst_value_transform_int_range_string (const GValue *src_value,
(int)src_value->data[0].v_long, (int)src_value->data[1].v_long);
}
static void
gst_value_transform_double_range_string (const GValue *src_value,
GValue *dest_value)
{
dest_value->data[0].v_pointer = g_strdup_printf("[%g,%g]",
src_value->data[0].v_double, src_value->data[1].v_double);
}
static void
gst_value_transform_list_string (const GValue *src_value,
GValue *dest_value)
{
GValue *list_value;
GArray *array;
GString *s;
int i;
char *list_s;
array = src_value->data[0].v_pointer;
s = g_string_new("(");
for(i=0;i<array->len;i++){
list_value = &g_array_index(array, GValue, i);
if (i != 0) {
g_string_append (s, ", ");
}
list_s = g_strdup_value_contents (list_value);
g_string_append (s, list_s);
g_free (list_s);
}
g_string_append (s, ")");
dest_value->data[0].v_pointer = g_string_free (s, FALSE);
}
/* comparison functions */
static int
@ -460,6 +496,18 @@ gst_value_compare_double (const GValue *value1, const GValue *value2)
return GST_VALUE_UNORDERED;
}
static int
gst_value_compare_float (const GValue *value1, const GValue *value2)
{
if (value1->data[0].v_float > value2->data[0].v_float)
return GST_VALUE_GREATER_THAN;
if (value1->data[0].v_float < value2->data[0].v_float)
return GST_VALUE_LESS_THAN;
if (value1->data[0].v_float == value2->data[0].v_float)
return GST_VALUE_EQUAL;
return GST_VALUE_UNORDERED;
}
static int
gst_value_compare_string (const GValue *value1, const GValue *value2)
{
@ -472,10 +520,53 @@ gst_value_compare_string (const GValue *value1, const GValue *value2)
static int
gst_value_compare_fourcc (const GValue *value1, const GValue *value2)
{
g_print("comparing fourccs\n");
if (value2->data[0].v_int == value1->data[0].v_int) return GST_VALUE_EQUAL;
return GST_VALUE_UNORDERED;
}
static int
gst_value_compare_int_range (const GValue *value1, const GValue *value2)
{
if (value2->data[0].v_int == value1->data[0].v_int &&
value2->data[0].v_int == value1->data[0].v_int) return GST_VALUE_EQUAL;
return GST_VALUE_UNORDERED;
}
static int
gst_value_compare_double_range (const GValue *value1, const GValue *value2)
{
if (value2->data[0].v_double == value1->data[0].v_double &&
value2->data[0].v_double == value1->data[0].v_double)
return GST_VALUE_EQUAL;
return GST_VALUE_UNORDERED;
}
static int
gst_value_compare_list (const GValue *value1, const GValue *value2)
{
int i,j;
GArray *array1 = value1->data[0].v_pointer;
GArray *array2 = value2->data[0].v_pointer;
GValue *v1;
GValue *v2;
if (array1->len != array2->len) return GST_VALUE_UNORDERED;
for(i=0;i<array1->len;i++){
v1 = &g_array_index (array1, GValue, i);
for(j=0;j<array1->len;j++){
v2 = &g_array_index (array2, GValue, j);
if (gst_value_compare(v1, v2) == GST_VALUE_EQUAL) break;
}
if (j==array1->len) {
return GST_VALUE_UNORDERED;
}
}
return GST_VALUE_EQUAL;
}
gboolean
gst_value_can_compare (const GValue *value1, const GValue *value2)
{
@ -498,7 +589,8 @@ gst_value_compare (const GValue *value1, const GValue *value2)
GstValueCompareInfo *compare_info;
int i;
g_return_val_if_fail(G_VALUE_TYPE(value1) == G_VALUE_TYPE(value2), 0);
if (G_VALUE_TYPE(value1) != G_VALUE_TYPE(value2)) return GST_VALUE_UNORDERED;
for(i=0;i<gst_value_compare_funcs->len;i++){
compare_info = &g_array_index(gst_value_compare_funcs,
GstValueCompareInfo, i);
@ -507,7 +599,8 @@ gst_value_compare (const GValue *value1, const GValue *value2)
return compare_info->func(value1, value2);
}
g_return_val_if_fail(0 /* type not found */, GST_VALUE_UNORDERED);
g_critical("unable to compare values of type %s\n",
g_type_name (G_VALUE_TYPE (value1)));
return GST_VALUE_UNORDERED;
}
@ -633,23 +726,31 @@ gst_value_intersect (GValue *dest, const GValue *value1, const GValue *value2)
{
GstValueIntersectInfo *intersect_info;
int i;
int ret = FALSE;
g_print("intersecting %s=%s and %s=%s\n",
g_type_name(G_VALUE_TYPE(value1)), g_strdup_value_contents(value1),
g_type_name(G_VALUE_TYPE(value2)), g_strdup_value_contents(value2));
for(i=0;i<gst_value_intersect_funcs->len;i++){
intersect_info = &g_array_index(gst_value_intersect_funcs,
GstValueIntersectInfo, i);
if(intersect_info->type1 == G_VALUE_TYPE(value1) &&
intersect_info->type2 == G_VALUE_TYPE(value2)) {
return intersect_info->func(dest, value1, value2);
ret = intersect_info->func(dest, value1, value2);
g_print("result is %d %s\n", ret, ret?g_strdup_value_contents(dest):"none1");
return ret;
}
}
if(gst_value_compare(value1, value2) == GST_VALUE_EQUAL){
g_value_init(dest, G_VALUE_TYPE(value1));
g_value_copy(value1, dest);
return TRUE;
ret = TRUE;
g_print("result is %d %s\n", ret, ret?g_strdup_value_contents(dest):"none2");
}
return FALSE;
g_print("result is %d %s\n", ret, ret?g_strdup_value_contents(dest):"none3");
return ret;
}
void
@ -746,14 +847,22 @@ _gst_value_initialize (void)
gst_value_transform_fourcc_string);
g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
gst_value_transform_int_range_string);
g_value_register_transform_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_STRING,
gst_value_transform_double_range_string);
g_value_register_transform_func (GST_TYPE_LIST, G_TYPE_STRING,
gst_value_transform_list_string);
gst_value_compare_funcs = g_array_new(FALSE, FALSE,
sizeof(GstValueCompareInfo));
gst_value_register_compare_func (G_TYPE_INT, gst_value_compare_int);
gst_value_register_compare_func (G_TYPE_FLOAT, gst_value_compare_float);
gst_value_register_compare_func (G_TYPE_DOUBLE, gst_value_compare_double);
gst_value_register_compare_func (G_TYPE_STRING, gst_value_compare_string);
gst_value_register_compare_func (GST_TYPE_FOURCC, gst_value_compare_fourcc);
gst_value_register_compare_func (GST_TYPE_INT_RANGE, gst_value_compare_int_range);
gst_value_register_compare_func (GST_TYPE_DOUBLE_RANGE, gst_value_compare_double_range);
gst_value_register_compare_func (GST_TYPE_LIST, gst_value_compare_list);
gst_value_union_funcs = g_array_new(FALSE, FALSE,
sizeof(GstValueUnionInfo));