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value: Move list/array serialization/deserialization functions from GstStructure to GstValue

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=777375
This commit is contained in:
Vivia Nikolaidou 2017-02-23 20:22:03 +02:00 committed by Sebastian Dröge
parent 978df5d0ff
commit 33118f6118
3 changed files with 515 additions and 497 deletions
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9
gst/gst_private.h
View file

@ -150,6 +150,15 @@ G_GNUC_INTERNAL GstPlugin * _priv_gst_plugin_load_file_for_registry (const gcha
GstRegistry * registry,
GError** error);
/* GValue serialization/deserialization */
G_GNUC_INTERNAL const char * _priv_gst_value_gtype_to_abbr (GType type);
G_GNUC_INTERNAL gboolean _priv_gst_value_parse_string (gchar * s, gchar ** end, gchar ** next, gboolean unescape);
G_GNUC_INTERNAL gboolean _priv_gst_value_parse_simple_string (gchar * str, gchar ** end);
G_GNUC_INTERNAL gboolean _priv_gst_value_parse_value (gchar * str, gchar ** after, GValue * value, GType default_type);
G_GNUC_INTERNAL gchar * _priv_gst_value_serialize_any_list (const GValue * value, const gchar * begin, const gchar * end);
/* Used in GstBin for manual state handling */
G_GNUC_INTERNAL void _priv_gst_element_state_changed (GstElement *element,
GstState oldstate, GstState newstate, GstState pending);

500
gst/gststructure.c
View file

@ -116,9 +116,6 @@ static void gst_structure_transform_to_string (const GValue * src_value,
GValue * dest_value);
static GstStructure *gst_structure_copy_conditional (const GstStructure *
structure);
static gboolean gst_structure_parse_value (gchar * str, gchar ** after,
GValue * value, GType default_type);
static gboolean gst_structure_parse_simple_string (gchar * s, gchar ** end);
GType _gst_structure_type = 0;
@ -1760,130 +1757,6 @@ gst_structure_get_flagset (const GstStructure * structure,
return TRUE;
}
typedef struct _GstStructureAbbreviation
{
const gchar *type_name;
GType type;
}
GstStructureAbbreviation;
/* return a copy of an array of GstStructureAbbreviation containing all the
* known type_string, GType maps, including abbreviations for common types */
static GstStructureAbbreviation *
gst_structure_get_abbrs (gint * n_abbrs)
{
static GstStructureAbbreviation *abbrs = NULL;
static volatile gsize num = 0;
if (g_once_init_enter (&num)) {
/* dynamically generate the array */
gsize _num;
GstStructureAbbreviation dyn_abbrs[] = {
{"int", G_TYPE_INT}
,
{"i", G_TYPE_INT}
,
{"uint", G_TYPE_UINT}
,
{"u", G_TYPE_UINT}
,
{"float", G_TYPE_FLOAT}
,
{"f", G_TYPE_FLOAT}
,
{"double", G_TYPE_DOUBLE}
,
{"d", G_TYPE_DOUBLE}
,
{"buffer", GST_TYPE_BUFFER}
,
{"fraction", GST_TYPE_FRACTION}
,
{"boolean", G_TYPE_BOOLEAN}
,
{"bool", G_TYPE_BOOLEAN}
,
{"b", G_TYPE_BOOLEAN}
,
{"string", G_TYPE_STRING}
,
{"str", G_TYPE_STRING}
,
{"s", G_TYPE_STRING}
,
{"structure", GST_TYPE_STRUCTURE}
,
{"date", G_TYPE_DATE}
,
{"datetime", GST_TYPE_DATE_TIME}
,
{"bitmask", GST_TYPE_BITMASK}
,
{"sample", GST_TYPE_SAMPLE}
,
{"taglist", GST_TYPE_TAG_LIST}
,
{"type", G_TYPE_GTYPE}
};
_num = G_N_ELEMENTS (dyn_abbrs);
/* permanently allocate and copy the array now */
abbrs = g_new0 (GstStructureAbbreviation, _num);
memcpy (abbrs, dyn_abbrs, sizeof (GstStructureAbbreviation) * _num);
g_once_init_leave (&num, _num);
}
*n_abbrs = num;
return abbrs;
}
/* given a type_name that could be a type abbreviation or a registered GType,
* return a matching GType */
static GType
gst_structure_gtype_from_abbr (const char *type_name)
{
int i;
GstStructureAbbreviation *abbrs;
gint n_abbrs;
GType ret;
g_return_val_if_fail (type_name != NULL, G_TYPE_INVALID);
abbrs = gst_structure_get_abbrs (&n_abbrs);
for (i = 0; i < n_abbrs; i++) {
if (strcmp (type_name, abbrs[i].type_name) == 0) {
return abbrs[i].type;
}
}
/* this is the fallback */
ret = g_type_from_name (type_name);
/* If not found, try it as a dynamic type */
if (G_UNLIKELY (ret == 0))
ret = gst_dynamic_type_factory_load (type_name);
return ret;
}
static const char *
gst_structure_to_abbr (GType type)
{
int i;
GstStructureAbbreviation *abbrs;
gint n_abbrs;
g_return_val_if_fail (type != G_TYPE_INVALID, NULL);
abbrs = gst_structure_get_abbrs (&n_abbrs);
for (i = 0; i < n_abbrs; i++) {
if (type == abbrs[i].type) {
return abbrs[i].type_name;
}
}
return g_type_name (type);
}
static GType
gst_structure_value_get_generic_type (const GValue * val)
{
@ -1933,14 +1806,15 @@ priv_gst_structure_append_to_gstring (const GstStructure * structure,
/* FIXME: do we need to escape fieldnames? */
g_string_append (s, g_quark_to_string (field->name));
g_string_append_len (s, "=(", 2);
g_string_append (s, gst_structure_to_abbr (type));
g_string_append (s, _priv_gst_value_gtype_to_abbr (type));
g_string_append_c (s, ')');
if (t) {
g_string_append (s, t);
g_free (t);
} else {
GST_WARNING ("No value transform to serialize field '%s' of type '%s'",
g_quark_to_string (field->name), gst_structure_to_abbr (type));
g_quark_to_string (field->name),
_priv_gst_value_gtype_to_abbr (type));
g_string_append (s, "NULL");
}
}
@ -1960,7 +1834,7 @@ priv__gst_structure_append_template_to_gstring (GQuark field_id,
/* FIXME: do we need to escape fieldnames? */
g_string_append (s, g_quark_to_string (field_id));
g_string_append_len (s, "=(", 2);
g_string_append (s, gst_structure_to_abbr (type));
g_string_append (s, _priv_gst_value_gtype_to_abbr (type));
g_string_append_c (s, ')');
//TODO(ensonic): table like GstStructureAbbreviation (or extend it)
@ -2039,266 +1913,6 @@ gst_structure_to_string (const GstStructure * structure)
return g_string_free (s, FALSE);
}
/*
* gst_structure_parse_string:
* @s: string to parse
* @end: out-pointer to char behind end of string
* @next: out-pointer to start of unread data
* @unescape: @TRUE if the substring is escaped.
*
* Find the end of a sub-string. If end == next, the string will not be
* null-terminated. In all other cases it will be.
*
* Note: This function modifies the string in @s (if unescape == @TRUE).
*
* Returns: @TRUE if a sub-string was found and @FALSE if the string is not
* terminated.
*/
static gboolean
gst_structure_parse_string (gchar * s, gchar ** end, gchar ** next,
gboolean unescape)
{
gchar *w;
if (*s == 0)
return FALSE;
if (*s != '"') {
int ret = gst_structure_parse_simple_string (s, end);
*next = *end;
return ret;
}
/* Find the closing quotes */
if (unescape) {
w = s;
s++;
while (*s != '"') {
if (G_UNLIKELY (*s == 0))
return FALSE;
if (G_UNLIKELY (*s == '\\')) {
s++;
if (G_UNLIKELY (*s == 0))
return FALSE;
}
*w = *s;
w++;
s++;
}
s++;
} else {
s++;
while (*s != '"') {
if (G_UNLIKELY (*s == 0))
return FALSE;
if (G_UNLIKELY (*s == '\\')) {
s++;
if (G_UNLIKELY (*s == 0))
return FALSE;
}
s++;
}
s++;
w = s;
}
*end = w;
*next = s;
return TRUE;
}
static gboolean
gst_structure_parse_range (gchar * s, gchar ** after, GValue * value,
GType type)
{
GValue value1 = { 0 };
GValue value2 = { 0 };
GValue value3 = { 0 };
GType range_type;
gboolean ret, have_step = FALSE;
if (*s != '[')
return FALSE;
s++;
ret = gst_structure_parse_value (s, &s, &value1, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
if (*s != ',')
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
ret = gst_structure_parse_value (s, &s, &value2, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
/* optional step for int and int64 */
if (G_VALUE_TYPE (&value1) == G_TYPE_INT
|| G_VALUE_TYPE (&value1) == G_TYPE_INT64) {
if (*s == ',') {
s++;
while (g_ascii_isspace (*s))
s++;
ret = gst_structure_parse_value (s, &s, &value3, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
have_step = TRUE;
}
}
if (*s != ']')
return FALSE;
s++;
if (G_VALUE_TYPE (&value1) != G_VALUE_TYPE (&value2))
return FALSE;
if (have_step && G_VALUE_TYPE (&value1) != G_VALUE_TYPE (&value3))
return FALSE;
if (G_VALUE_TYPE (&value1) == G_TYPE_DOUBLE) {
range_type = GST_TYPE_DOUBLE_RANGE;
g_value_init (value, range_type);
gst_value_set_double_range (value,
gst_g_value_get_double_unchecked (&value1),
gst_g_value_get_double_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == G_TYPE_INT) {
range_type = GST_TYPE_INT_RANGE;
g_value_init (value, range_type);
if (have_step)
gst_value_set_int_range_step (value,
gst_g_value_get_int_unchecked (&value1),
gst_g_value_get_int_unchecked (&value2),
gst_g_value_get_int_unchecked (&value3));
else
gst_value_set_int_range (value, gst_g_value_get_int_unchecked (&value1),
gst_g_value_get_int_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == G_TYPE_INT64) {
range_type = GST_TYPE_INT64_RANGE;
g_value_init (value, range_type);
if (have_step)
gst_value_set_int64_range_step (value,
gst_g_value_get_int64_unchecked (&value1),
gst_g_value_get_int64_unchecked (&value2),
gst_g_value_get_int64_unchecked (&value3));
else
gst_value_set_int64_range (value,
gst_g_value_get_int64_unchecked (&value1),
gst_g_value_get_int64_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == GST_TYPE_FRACTION) {
range_type = GST_TYPE_FRACTION_RANGE;
g_value_init (value, range_type);
gst_value_set_fraction_range (value, &value1, &value2);
} else {
return FALSE;
}
*after = s;
return TRUE;
}
static gboolean
gst_structure_parse_any_list (gchar * s, gchar ** after, GValue * value,
GType type, GType list_type, char begin, char end)
{
GValue list_value = { 0 };
gboolean ret;
GArray *array;
g_value_init (value, list_type);
array = g_value_peek_pointer (value);
if (*s != begin)
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
if (*s == end) {
s++;
*after = s;
return TRUE;
}
ret = gst_structure_parse_value (s, &s, &list_value, type);
if (!ret)
return FALSE;
g_array_append_val (array, list_value);
while (g_ascii_isspace (*s))
s++;
while (*s != end) {
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, &list_value, type);
if (!ret)
return FALSE;
g_array_append_val (array, list_value);
while (g_ascii_isspace (*s))
s++;
}
s++;
*after = s;
return TRUE;
}
static gboolean
gst_structure_parse_list (gchar * s, gchar ** after, GValue * value, GType type)
{
return gst_structure_parse_any_list (s, after, value, type, GST_TYPE_LIST,
'{', '}');
}
static gboolean
gst_structure_parse_array (gchar * s, gchar ** after, GValue * value,
GType type)
{
return gst_structure_parse_any_list (s, after, value, type,
GST_TYPE_ARRAY, '<', '>');
}
static gboolean
gst_structure_parse_simple_string (gchar * str, gchar ** end)
{
char *s = str;
while (G_LIKELY (GST_ASCII_IS_STRING (*s))) {
s++;
}
*end = s;
return (s != str);
}
static gboolean
gst_structure_parse_field (gchar * str,
gchar ** after, GstStructureField * field)
@ -2313,7 +1927,7 @@ gst_structure_parse_field (gchar * str,
while (g_ascii_isspace (*s) || (s[0] == '\\' && g_ascii_isspace (s[1])))
s++;
name = s;
if (G_UNLIKELY (!gst_structure_parse_simple_string (s, &name_end))) {
if (G_UNLIKELY (!_priv_gst_value_parse_simple_string (s, &name_end))) {
GST_WARNING ("failed to parse simple string, str=%s", str);
return FALSE;
}
@ -2334,7 +1948,7 @@ gst_structure_parse_field (gchar * str,
GST_DEBUG ("trying field name '%s'", name);
*name_end = c;
if (G_UNLIKELY (!gst_structure_parse_value (s, &s, &field->value,
if (G_UNLIKELY (!_priv_gst_value_parse_value (s, &s, &field->value,
G_TYPE_INVALID))) {
GST_WARNING ("failed to parse value %s", str);
return FALSE;
@ -2344,106 +1958,6 @@ gst_structure_parse_field (gchar * str,
return TRUE;
}
static gboolean
gst_structure_parse_value (gchar * str,
gchar ** after, GValue * value, GType default_type)
{
gchar *type_name;
gchar *type_end;
gchar *value_s;
gchar *value_end;
gchar *s;
gchar c;
int ret = 0;
GType type = default_type;
s = str;
while (g_ascii_isspace (*s))
s++;
/* check if there's a (type_name) 'cast' */
type_name = NULL;
if (*s == '(') {
s++;
while (g_ascii_isspace (*s))
s++;
type_name = s;
if (G_UNLIKELY (!gst_structure_parse_simple_string (s, &type_end)))
return FALSE;
s = type_end;
while (g_ascii_isspace (*s))
s++;
if (G_UNLIKELY (*s != ')'))
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
c = *type_end;
*type_end = 0;
type = gst_structure_gtype_from_abbr (type_name);
GST_DEBUG ("trying type name '%s'", type_name);
*type_end = c;
if (G_UNLIKELY (type == G_TYPE_INVALID)) {
GST_WARNING ("invalid type");
return FALSE;
}
}
while (g_ascii_isspace (*s))
s++;
if (*s == '[') {
ret = gst_structure_parse_range (s, &s, value, type);
} else if (*s == '{') {
ret = gst_structure_parse_list (s, &s, value, type);
} else if (*s == '<') {
ret = gst_structure_parse_array (s, &s, value, type);
} else {
value_s = s;
if (G_UNLIKELY (type == G_TYPE_INVALID)) {
GType try_types[] =
{ G_TYPE_INT, G_TYPE_DOUBLE, GST_TYPE_FRACTION, GST_TYPE_FLAG_SET,
G_TYPE_BOOLEAN, G_TYPE_STRING
};
int i;
if (G_UNLIKELY (!gst_structure_parse_string (s, &value_end, &s, TRUE)))
return FALSE;
/* Set NULL terminator for deserialization */
c = *value_end;
*value_end = '\0';
for (i = 0; i < G_N_ELEMENTS (try_types); i++) {
g_value_init (value, try_types[i]);
ret = gst_value_deserialize (value, value_s);
if (ret)
break;
g_value_unset (value);
}
} else {
g_value_init (value, type);
if (G_UNLIKELY (!gst_structure_parse_string (s, &value_end, &s,
(type != G_TYPE_STRING))))
return FALSE;
/* Set NULL terminator for deserialization */
c = *value_end;
*value_end = '\0';
ret = gst_value_deserialize (value, value_s);
if (G_UNLIKELY (!ret))
g_value_unset (value);
}
*value_end = c;
}
*after = s;
return ret;
}
gboolean
priv_gst_structure_parse_name (gchar * str, gchar ** start, gchar ** end,
gchar ** next)
@ -2460,7 +1974,7 @@ priv_gst_structure_parse_name (gchar * str, gchar ** start, gchar ** end,
*start = r;
if (G_UNLIKELY (!gst_structure_parse_string (r, &w, &r, TRUE))) {
if (G_UNLIKELY (!_priv_gst_value_parse_string (r, &w, &r, TRUE))) {
GST_WARNING ("Failed to parse structure string '%s'", str);
return FALSE;
}

503
gst/gstvalue.c
View file

@ -96,6 +96,9 @@ static void gst_value_register_intersect_func (GType type1,
static void gst_value_register_subtract_func (GType minuend_type,
GType subtrahend_type, GstValueSubtractFunc func);
static gboolean _priv_gst_value_parse_array (gchar * s, gchar ** after,
GValue * value, GType type);
typedef struct _GstValueUnionInfo GstValueUnionInfo;
struct _GstValueUnionInfo
{
@ -128,6 +131,14 @@ struct _GstFlagSetClass
typedef struct _GstFlagSetClass GstFlagSetClass;
typedef struct _GstValueAbbreviation GstValueAbbreviation;
struct _GstValueAbbreviation
{
const gchar *type_name;
GType type;
};
#define FUNDAMENTAL_TYPE_ID_MAX \
(G_TYPE_FUNDAMENTAL_MAX >> G_TYPE_FUNDAMENTAL_SHIFT)
#define FUNDAMENTAL_TYPE_ID(type) \
@ -185,8 +196,8 @@ gst_value_hash_add_type (GType type, const GstValueTable * table)
/* two helper functions to serialize/stringify any type of list
* regular lists are done with { }, arrays with < >
*/
static gchar *
gst_value_serialize_any_list (const GValue * value, const gchar * begin,
gchar *
_priv_gst_value_serialize_any_list (const GValue * value, const gchar * begin,
const gchar * end)
{
guint i;
@ -1025,7 +1036,7 @@ gst_value_compare_g_value_array (const GValue * value1, const GValue * value2)
static gchar *
gst_value_serialize_value_list (const GValue * value)
{
return gst_value_serialize_any_list (value, "{ ", " }");
return _priv_gst_value_serialize_any_list (value, "{ ", " }");
}
static gboolean
@ -1038,7 +1049,7 @@ gst_value_deserialize_value_list (GValue * dest, const gchar * s)
static gchar *
gst_value_serialize_value_array (const GValue * value)
{
return gst_value_serialize_any_list (value, "< ", " >");
return _priv_gst_value_serialize_any_list (value, "< ", " >");
}
static gboolean
@ -2063,6 +2074,490 @@ gst_value_deserialize_caps (GValue * dest, const gchar * s)
return FALSE;
}
/********************************************
* Serialization/deserialization of GValues *
********************************************/
static GstValueAbbreviation *
_priv_gst_value_get_abbrs (gint * n_abbrs)
{
static GstValueAbbreviation *abbrs = NULL;
static volatile gsize num = 0;
if (g_once_init_enter (&num)) {
/* dynamically generate the array */
gsize _num;
GstValueAbbreviation dyn_abbrs[] = {
{"int", G_TYPE_INT}
,
{"i", G_TYPE_INT}
,
{"uint", G_TYPE_UINT}
,
{"u", G_TYPE_UINT}
,
{"float", G_TYPE_FLOAT}
,
{"f", G_TYPE_FLOAT}
,
{"double", G_TYPE_DOUBLE}
,
{"d", G_TYPE_DOUBLE}
,
{"buffer", GST_TYPE_BUFFER}
,
{"fraction", GST_TYPE_FRACTION}
,
{"boolean", G_TYPE_BOOLEAN}
,
{"bool", G_TYPE_BOOLEAN}
,
{"b", G_TYPE_BOOLEAN}
,
{"string", G_TYPE_STRING}
,
{"str", G_TYPE_STRING}
,
{"s", G_TYPE_STRING}
,
{"structure", GST_TYPE_STRUCTURE}
,
{"date", G_TYPE_DATE}
,
{"datetime", GST_TYPE_DATE_TIME}
,
{"bitmask", GST_TYPE_BITMASK}
,
{"sample", GST_TYPE_SAMPLE}
,
{"taglist", GST_TYPE_TAG_LIST}
,
{"type", G_TYPE_GTYPE}
,
{"array", GST_TYPE_ARRAY}
,
{"list", GST_TYPE_LIST}
};
_num = G_N_ELEMENTS (dyn_abbrs);
/* permanently allocate and copy the array now */
abbrs = g_new0 (GstValueAbbreviation, _num);
memcpy (abbrs, dyn_abbrs, sizeof (GstValueAbbreviation) * _num);
g_once_init_leave (&num, _num);
}
*n_abbrs = num;
return abbrs;
}
/* given a type_name that could be a type abbreviation or a registered GType,
* return a matching GType */
static GType
_priv_gst_value_gtype_from_abbr (const char *type_name)
{
int i;
GstValueAbbreviation *abbrs;
gint n_abbrs;
GType ret;
g_return_val_if_fail (type_name != NULL, G_TYPE_INVALID);
abbrs = _priv_gst_value_get_abbrs (&n_abbrs);
for (i = 0; i < n_abbrs; i++) {
if (strcmp (type_name, abbrs[i].type_name) == 0) {
return abbrs[i].type;
}
}
/* this is the fallback */
ret = g_type_from_name (type_name);
/* If not found, try it as a dynamic type */
if (G_UNLIKELY (ret == 0))
ret = gst_dynamic_type_factory_load (type_name);
return ret;
}
const char *
_priv_gst_value_gtype_to_abbr (GType type)
{
int i;
GstValueAbbreviation *abbrs;
gint n_abbrs;
g_return_val_if_fail (type != G_TYPE_INVALID, NULL);
abbrs = _priv_gst_value_get_abbrs (&n_abbrs);
for (i = 0; i < n_abbrs; i++) {
if (type == abbrs[i].type) {
return abbrs[i].type_name;
}
}
return g_type_name (type);
}
/*
* _priv_gst_value_parse_string:
* @s: string to parse
* @end: out-pointer to char behind end of string
* @next: out-pointer to start of unread data
* @unescape: @TRUE if the substring is escaped.
*
* Find the end of a sub-string. If end == next, the string will not be
* null-terminated. In all other cases it will be.
*
* Note: This function modifies the string in @s (if unescape == @TRUE).
*
* Returns: @TRUE if a sub-string was found and @FALSE if the string is not
* terminated.
*/
gboolean
_priv_gst_value_parse_string (gchar * s, gchar ** end, gchar ** next,
gboolean unescape)
{
gchar *w;
if (*s == 0)
return FALSE;
if (*s != '"') {
int ret = _priv_gst_value_parse_simple_string (s, end);
*next = *end;
return ret;
}
/* Find the closing quotes */
if (unescape) {
w = s;
s++;
while (*s != '"') {
if (G_UNLIKELY (*s == 0))
return FALSE;
if (G_UNLIKELY (*s == '\\')) {
s++;
if (G_UNLIKELY (*s == 0))
return FALSE;
}
*w = *s;
w++;
s++;
}
s++;
} else {
s++;
while (*s != '"') {
if (G_UNLIKELY (*s == 0))
return FALSE;
if (G_UNLIKELY (*s == '\\')) {
s++;
if (G_UNLIKELY (*s == 0))
return FALSE;
}
s++;
}
s++;
w = s;
}
*end = w;
*next = s;
return TRUE;
}
static gboolean
_priv_gst_value_parse_range (gchar * s, gchar ** after, GValue * value,
GType type)
{
GValue value1 = { 0 };
GValue value2 = { 0 };
GValue value3 = { 0 };
GType range_type;
gboolean ret, have_step = FALSE;
if (*s != '[')
return FALSE;
s++;
ret = _priv_gst_value_parse_value (s, &s, &value1, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
if (*s != ',')
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
ret = _priv_gst_value_parse_value (s, &s, &value2, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
/* optional step for int and int64 */
if (G_VALUE_TYPE (&value1) == G_TYPE_INT
|| G_VALUE_TYPE (&value1) == G_TYPE_INT64) {
if (*s == ',') {
s++;
while (g_ascii_isspace (*s))
s++;
ret = _priv_gst_value_parse_value (s, &s, &value3, type);
if (!ret)
return FALSE;
while (g_ascii_isspace (*s))
s++;
have_step = TRUE;
}
}
if (*s != ']')
return FALSE;
s++;
if (G_VALUE_TYPE (&value1) != G_VALUE_TYPE (&value2))
return FALSE;
if (have_step && G_VALUE_TYPE (&value1) != G_VALUE_TYPE (&value3))
return FALSE;
if (G_VALUE_TYPE (&value1) == G_TYPE_DOUBLE) {
range_type = GST_TYPE_DOUBLE_RANGE;
g_value_init (value, range_type);
gst_value_set_double_range (value,
gst_g_value_get_double_unchecked (&value1),
gst_g_value_get_double_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == G_TYPE_INT) {
range_type = GST_TYPE_INT_RANGE;
g_value_init (value, range_type);
if (have_step)
gst_value_set_int_range_step (value,
gst_g_value_get_int_unchecked (&value1),
gst_g_value_get_int_unchecked (&value2),
gst_g_value_get_int_unchecked (&value3));
else
gst_value_set_int_range (value, gst_g_value_get_int_unchecked (&value1),
gst_g_value_get_int_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == G_TYPE_INT64) {
range_type = GST_TYPE_INT64_RANGE;
g_value_init (value, range_type);
if (have_step)
gst_value_set_int64_range_step (value,
gst_g_value_get_int64_unchecked (&value1),
gst_g_value_get_int64_unchecked (&value2),
gst_g_value_get_int64_unchecked (&value3));
else
gst_value_set_int64_range (value,
gst_g_value_get_int64_unchecked (&value1),
gst_g_value_get_int64_unchecked (&value2));
} else if (G_VALUE_TYPE (&value1) == GST_TYPE_FRACTION) {
range_type = GST_TYPE_FRACTION_RANGE;
g_value_init (value, range_type);
gst_value_set_fraction_range (value, &value1, &value2);
} else {
return FALSE;
}
*after = s;
return TRUE;
}
static gboolean
_priv_gst_value_parse_any_list (gchar * s, gchar ** after, GValue * value,
GType type, char begin, char end)
{
GValue list_value = { 0 };
gboolean ret;
GArray *array;
array = g_value_peek_pointer (value);
if (*s != begin)
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
if (*s == end) {
s++;
*after = s;
return TRUE;
}
ret = _priv_gst_value_parse_value (s, &s, &list_value, type);
if (!ret)
return FALSE;
g_array_append_val (array, list_value);
while (g_ascii_isspace (*s))
s++;
while (*s != end) {
if (*s != ',')
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
memset (&list_value, 0, sizeof (list_value));
ret = _priv_gst_value_parse_value (s, &s, &list_value, type);
if (!ret)
return FALSE;
g_array_append_val (array, list_value);
while (g_ascii_isspace (*s))
s++;
}
s++;
*after = s;
return TRUE;
}
static gboolean
_priv_gst_value_parse_list (gchar * s, gchar ** after, GValue * value,
GType type)
{
return _priv_gst_value_parse_any_list (s, after, value, type, '{', '}');
}
static gboolean
_priv_gst_value_parse_array (gchar * s, gchar ** after, GValue * value,
GType type)
{
return _priv_gst_value_parse_any_list (s, after, value, type, '<', '>');
}
gboolean
_priv_gst_value_parse_simple_string (gchar * str, gchar ** end)
{
char *s = str;
while (G_LIKELY (GST_ASCII_IS_STRING (*s))) {
s++;
}
*end = s;
return (s != str);
}
gboolean
_priv_gst_value_parse_value (gchar * str,
gchar ** after, GValue * value, GType default_type)
{
gchar *type_name;
gchar *type_end;
gchar *value_s;
gchar *value_end;
gchar *s;
gchar c;
int ret = 0;
GType type = default_type;
s = str;
while (g_ascii_isspace (*s))
s++;
/* check if there's a (type_name) 'cast' */
type_name = NULL;
if (*s == '(') {
s++;
while (g_ascii_isspace (*s))
s++;
type_name = s;
if (G_UNLIKELY (!_priv_gst_value_parse_simple_string (s, &type_end)))
return FALSE;
s = type_end;
while (g_ascii_isspace (*s))
s++;
if (G_UNLIKELY (*s != ')'))
return FALSE;
s++;
while (g_ascii_isspace (*s))
s++;
c = *type_end;
*type_end = 0;
type = _priv_gst_value_gtype_from_abbr (type_name);
GST_DEBUG ("trying type name '%s'", type_name);
*type_end = c;
if (G_UNLIKELY (type == G_TYPE_INVALID)) {
GST_WARNING ("invalid type");
return FALSE;
}
}
while (g_ascii_isspace (*s))
s++;
if (*s == '[') {
ret = _priv_gst_value_parse_range (s, &s, value, type);
} else if (*s == '{') {
g_value_init (value, GST_TYPE_LIST);
ret = _priv_gst_value_parse_list (s, &s, value, type);
} else if (*s == '<') {
g_value_init (value, GST_TYPE_ARRAY);
ret = _priv_gst_value_parse_array (s, &s, value, type);
} else {
value_s = s;
if (G_UNLIKELY (type == G_TYPE_INVALID)) {
GType try_types[] =
{ G_TYPE_INT, G_TYPE_DOUBLE, GST_TYPE_FRACTION, GST_TYPE_FLAG_SET,
G_TYPE_BOOLEAN, G_TYPE_STRING
};
int i;
if (G_UNLIKELY (!_priv_gst_value_parse_string (s, &value_end, &s, TRUE)))
return FALSE;
/* Set NULL terminator for deserialization */
c = *value_end;
*value_end = '\0';
for (i = 0; i < G_N_ELEMENTS (try_types); i++) {
g_value_init (value, try_types[i]);
ret = gst_value_deserialize (value, value_s);
if (ret)
break;
g_value_unset (value);
}
} else {
g_value_init (value, type);
if (G_UNLIKELY (!_priv_gst_value_parse_string (s, &value_end, &s,
(type != G_TYPE_STRING))))
return FALSE;
/* Set NULL terminator for deserialization */
c = *value_end;
*value_end = '\0';
ret = gst_value_deserialize (value, value_s);
if (G_UNLIKELY (!ret))
g_value_unset (value);
}
*value_end = c;
}
*after = s;
return ret;
}
/**************
* GstSegment *
**************/