/**
* gst_buffer_pool_config_add_option:
* @config: a #GstBufferPool configuration
* @option: an option to add
*
* Enabled the option in @config. This will instruct the @bufferpool to enable
* the specified option on the buffers that it allocates.
*
* The supported options by @pool can be retrieved with gst_buffer_pool_get_options().
*/
void
gst_buffer_pool_config_add_option (GstStructure * config, const gchar * option)
{
const GValue *value;
GValue option_value = { 0, };
guint i, len;
g_return_if_fail (config != NULL);
value = gst_structure_id_get_value (config, GST_QUARK (OPTIONS));
if (value) {
len = gst_value_array_get_size (value);
for (i = 0; i < len; ++i) {
const GValue *nth_val = gst_value_array_get_value (value, i);
if (g_str_equal (option, g_value_get_string (nth_val)))
return;
}
} else {
GValue new_array_val = { 0, };
g_value_init (&new_array_val, GST_TYPE_ARRAY);
gst_structure_id_take_value (config, GST_QUARK (OPTIONS), &new_array_val);
value = gst_structure_id_get_value (config, GST_QUARK (OPTIONS));
}
g_value_init (&option_value, G_TYPE_STRING);
g_value_set_string (&option_value, option);
gst_value_array_append_value ((GValue *) value, &option_value);
g_value_unset (&option_value);
}
/**
* gst_event_parse_qos:
* @event: The event to query
* @type: (out): A pointer to store the QoS type in
* @proportion: (out): A pointer to store the proportion in
* @diff: (out): A pointer to store the diff in
* @timestamp: (out): A pointer to store the timestamp in
*
* Get the type, proportion, diff and timestamp in the qos event. See
* gst_event_new_qos() for more information about the different QoS values.
*/
void
gst_event_parse_qos (GstEvent * event, GstQOSType * type,
gdouble * proportion, GstClockTimeDiff * diff, GstClockTime * timestamp)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_QOS);
structure = GST_EVENT_STRUCTURE (event);
if (type)
*type = (GstQOSType)
g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (TYPE)));
if (proportion)
*proportion =
g_value_get_double (gst_structure_id_get_value (structure,
GST_QUARK (PROPORTION)));
if (diff)
*diff =
g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (DIFF)));
if (timestamp)
*timestamp =
g_value_get_uint64 (gst_structure_id_get_value (structure,
GST_QUARK (TIMESTAMP)));
}
/**
* gst_event_parse_step:
* @event: The event to query
* @format: (out) (allow-none): a pointer to store the format in
* @amount: (out) (allow-none): a pointer to store the amount in
* @rate: (out) (allow-none): a pointer to store the rate in
* @flush: (out) (allow-none): a pointer to store the flush boolean in
* @intermediate: (out) (allow-none): a pointer to store the intermediate
* boolean in
*
* Parse the step event.
*/
void
gst_event_parse_step (GstEvent * event, GstFormat * format, guint64 * amount,
gdouble * rate, gboolean * flush, gboolean * intermediate)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_STEP);
structure = GST_EVENT_STRUCTURE (event);
if (format)
*format =
(GstFormat) g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (amount)
*amount = g_value_get_uint64 (gst_structure_id_get_value (structure,
GST_QUARK (AMOUNT)));
if (rate)
*rate = g_value_get_double (gst_structure_id_get_value (structure,
GST_QUARK (RATE)));
if (flush)
*flush = g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (FLUSH)));
if (intermediate)
*intermediate = g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (INTERMEDIATE)));
}
/**
* gst_event_parse_buffer_size:
* @event: The event to query
* @format: (out): A pointer to store the format in
* @minsize: (out): A pointer to store the minsize in
* @maxsize: (out): A pointer to store the maxsize in
* @async: (out): A pointer to store the async-flag in
*
* Get the format, minsize, maxsize and async-flag in the buffersize event.
*/
void
gst_event_parse_buffer_size (GstEvent * event, GstFormat * format,
gint64 * minsize, gint64 * maxsize, gboolean * async)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_BUFFERSIZE);
structure = GST_EVENT_STRUCTURE (event);
if (format)
*format = (GstFormat)
g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (minsize)
*minsize =
g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (MINSIZE)));
if (maxsize)
*maxsize =
g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (MAXSIZE)));
if (async)
*async =
g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (ASYNC)));
}
const GstVideoInfo *
gst_allocator_get_vaapi_video_info (GstAllocator * allocator,
guint * out_flags_ptr)
{
const GstStructure *structure;
const GValue *value;
g_return_val_if_fail (GST_IS_ALLOCATOR (allocator), NULL);
structure =
g_object_get_qdata (G_OBJECT (allocator), GST_VAAPI_VIDEO_INFO_QUARK);
if (!structure)
return NULL;
if (out_flags_ptr) {
value = gst_structure_id_get_value (structure, FLAGS_QUARK);
if (!value)
return NULL;
*out_flags_ptr = g_value_get_uint (value);
}
value = gst_structure_id_get_value (structure, INFO_QUARK);
if (!value)
return NULL;
return g_value_get_boxed (value);
}
static void
gst_tag_list_add_value_internal (GstStructure * list, GstTagMergeMode mode,
GQuark tag, const GValue * value)
{
GstTagInfo *info = gst_tag_lookup (tag);
const GValue *value2;
g_assert (info != NULL);
if (info->merge_func
&& (value2 = gst_structure_id_get_value (list, tag)) != NULL) {
GValue dest = { 0, };
switch (mode) {
case GST_TAG_MERGE_REPLACE_ALL:
case GST_TAG_MERGE_REPLACE:
gst_structure_id_set_value (list, tag, value);
break;
case GST_TAG_MERGE_PREPEND:
gst_value_list_concat (&dest, value, value2);
gst_structure_id_set_value (list, tag, &dest);
g_value_unset (&dest);
break;
case GST_TAG_MERGE_APPEND:
gst_value_list_concat (&dest, value2, value);
gst_structure_id_set_value (list, tag, &dest);
g_value_unset (&dest);
break;
case GST_TAG_MERGE_KEEP:
case GST_TAG_MERGE_KEEP_ALL:
break;
default:
g_assert_not_reached ();
break;
}
} else {
switch (mode) {
case GST_TAG_MERGE_APPEND:
case GST_TAG_MERGE_KEEP:
if (gst_structure_id_get_value (list, tag) != NULL)
break;
/* fall through */
case GST_TAG_MERGE_REPLACE_ALL:
case GST_TAG_MERGE_REPLACE:
case GST_TAG_MERGE_PREPEND:
gst_structure_id_set_value (list, tag, value);
break;
case GST_TAG_MERGE_KEEP_ALL:
break;
default:
g_assert_not_reached ();
break;
}
}
}
/**
* gst_query_parse_buffering_percent
* @query: A valid #GstQuery of type GST_QUERY_BUFFERING.
* @busy: if buffering is busy
* @percent: a buffering percent
*
* Get the percentage of buffered data. This is a value between 0 and 100.
* The @busy indicator is %TRUE when the buffering is in progress.
*
* Since: 0.10.20
*/
void
gst_query_parse_buffering_percent (GstQuery * query, gboolean * busy,
gint * percent)
{
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_BUFFERING);
if (busy)
*busy = g_value_get_boolean (gst_structure_id_get_value (query->structure,
GST_QUARK (BUSY)));
if (percent)
*percent = g_value_get_int (gst_structure_id_get_value (query->structure,
GST_QUARK (BUFFER_PERCENT)));
}
/**
* gst_query_parse_position:
* @query: a #GstQuery
* @format: the storage for the #GstFormat of the position values (may be NULL)
* @cur: the storage for the current position (may be NULL)
*
* Parse a position query, writing the format into @format, and the position
* into @cur, if the respective parameters are non-NULL.
*/
void
gst_query_parse_position (GstQuery * query, GstFormat * format, gint64 * cur)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_POSITION);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (cur)
*cur = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (CURRENT)));
}
/**
* gst_query_parse_duration:
* @query: a #GstQuery
* @format: the storage for the #GstFormat of the duration value, or NULL.
* @duration: the storage for the total duration, or NULL.
*
* Parse a duration query answer. Write the format of the duration into @format,
* and the value into @duration, if the respective variables are non-NULL.
*/
void
gst_query_parse_duration (GstQuery * query, GstFormat * format,
gint64 * duration)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_DURATION);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (duration)
*duration = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (DURATION)));
}
/**
* gst_event_parse_latency:
* @event: The event to query
* @latency: (out): A pointer to store the latency in.
*
* Get the latency in the latency event.
*/
void
gst_event_parse_latency (GstEvent * event, GstClockTime * latency)
{
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_LATENCY);
if (latency)
*latency =
g_value_get_uint64 (gst_structure_id_get_value (GST_EVENT_STRUCTURE
(event), GST_QUARK (LATENCY)));
}
/**
* gst_event_parse_segment_done:
* @event: A valid #GstEvent of type GST_EVENT_SEGMENT_DONE.
* @format: (out): Result location for the format, or NULL
* @position: (out): Result location for the position, or NULL
*
* Extracts the position and format from the segment done message.
*
*/
void
gst_event_parse_segment_done (GstEvent * event, GstFormat * format,
gint64 * position)
{
const GstStructure *structure;
const GValue *val;
g_return_if_fail (event != NULL);
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT_DONE);
structure = gst_event_get_structure (event);
val = gst_structure_id_get_value (structure, GST_QUARK (FORMAT));
if (format != NULL)
*format = g_value_get_enum (val);
val = gst_structure_id_get_value (structure, GST_QUARK (POSITION));
if (position != NULL)
*position = g_value_get_int64 (val);
}
/**
* gst_query_parse_latency:
* @query: a #GstQuery
* @live: storage for live or NULL
* @min_latency: the storage for the min latency or NULL
* @max_latency: the storage for the max latency or NULL
*
* Parse a latency query answer.
*
* Since: 0.10.12
*/
void
gst_query_parse_latency (GstQuery * query, gboolean * live,
GstClockTime * min_latency, GstClockTime * max_latency)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_LATENCY);
structure = gst_query_get_structure (query);
if (live)
*live =
g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (LIVE)));
if (min_latency)
*min_latency = g_value_get_uint64 (gst_structure_id_get_value (structure,
GST_QUARK (MIN_LATENCY)));
if (max_latency)
*max_latency = g_value_get_uint64 (gst_structure_id_get_value (structure,
GST_QUARK (MAX_LATENCY)));
}
/**
* gst_event_parse_sink_message:
* @event: The event to query
* @msg: (out) (transfer full): a pointer to store the #GstMessage in.
*
* Parse the sink-message event. Unref @msg after usage.
*
* Since: 0.10.26
*/
void
gst_event_parse_sink_message (GstEvent * event, GstMessage ** msg)
{
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SINK_MESSAGE);
if (msg)
*msg =
GST_MESSAGE (gst_value_dup_mini_object (gst_structure_id_get_value
(event->structure, GST_QUARK (MESSAGE))));
}
/**
* gst_query_parse_buffering_stats:
* @query: A valid #GstQuery of type GST_QUERY_BUFFERING.
* @mode: a buffering mode
* @avg_in: the average input rate
* @avg_out: the average output rate
* @buffering_left: amount of buffering time left
*
* Extracts the buffering stats values from @query.
*
* Since: 0.10.20
*/
void
gst_query_parse_buffering_stats (GstQuery * query,
GstBufferingMode * mode, gint * avg_in, gint * avg_out,
gint64 * buffering_left)
{
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_BUFFERING);
if (mode)
*mode = g_value_get_enum (gst_structure_id_get_value (query->structure,
GST_QUARK (BUFFERING_MODE)));
if (avg_in)
*avg_in = g_value_get_int (gst_structure_id_get_value (query->structure,
GST_QUARK (AVG_IN_RATE)));
if (avg_out)
*avg_out = g_value_get_int (gst_structure_id_get_value (query->structure,
GST_QUARK (AVG_OUT_RATE)));
if (buffering_left)
*buffering_left =
g_value_get_int64 (gst_structure_id_get_value (query->structure,
GST_QUARK (BUFFERING_LEFT)));
}
/**
* gst_query_parse_uri:
* @query: a #GstQuery
* @uri: the storage for the current URI (may be NULL)
*
* Parse an URI query, writing the URI into @uri as a newly
* allocated string, if the respective parameters are non-NULL.
* Free the string with g_free() after usage.
*
* Since: 0.10.22
*/
void
gst_query_parse_uri (GstQuery * query, gchar ** uri)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_URI);
structure = gst_query_get_structure (query);
if (uri)
*uri = g_value_dup_string (gst_structure_id_get_value (structure,
GST_QUARK (URI)));
}
static gboolean
copy_missing_fields (GQuark field_id, const GValue * value, gpointer user_data)
{
GstStructure *st = (GstStructure *) user_data;
const GValue *val = gst_structure_id_get_value (st, field_id);
if (G_UNLIKELY (val == NULL)) {
gst_structure_id_set_value (st, field_id, value);
}
return TRUE;
}
/**
* gst_query_parse_convert:
* @query: a #GstQuery
* @src_format: the storage for the #GstFormat of the source value, or NULL
* @src_value: the storage for the source value, or NULL
* @dest_format: the storage for the #GstFormat of the destination value, or NULL
* @dest_value: the storage for the destination value, or NULL
*
* Parse a convert query answer. Any of @src_format, @src_value, @dest_format,
* and @dest_value may be NULL, in which case that value is omitted.
*/
void
gst_query_parse_convert (GstQuery * query, GstFormat * src_format,
gint64 * src_value, GstFormat * dest_format, gint64 * dest_value)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_CONVERT);
structure = gst_query_get_structure (query);
if (src_format)
*src_format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (SRC_FORMAT)));
if (src_value)
*src_value = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (SRC_VALUE)));
if (dest_format)
*dest_format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (DEST_FORMAT)));
if (dest_value)
*dest_value = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (DEST_VALUE)));
}
/**
* gst_query_parse_segment:
* @query: a #GstQuery
* @rate: the storage for the rate of the segment, or NULL
* @format: the storage for the #GstFormat of the values, or NULL
* @start_value: the storage for the start value, or NULL
* @stop_value: the storage for the stop value, or NULL
*
* Parse a segment query answer. Any of @rate, @format, @start_value, and
* @stop_value may be NULL, which will cause this value to be omitted.
*
* See gst_query_set_segment() for an explanation of the function arguments.
*/
void
gst_query_parse_segment (GstQuery * query, gdouble * rate, GstFormat * format,
gint64 * start_value, gint64 * stop_value)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_SEGMENT);
structure = gst_query_get_structure (query);
if (rate)
*rate = g_value_get_double (gst_structure_id_get_value (structure,
GST_QUARK (RATE)));
if (format)
*format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (start_value)
*start_value = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (START_VALUE)));
if (stop_value)
*stop_value = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (STOP_VALUE)));
}
/**
* gst_query_parse_seeking:
* @query: a GST_QUERY_SEEKING type query #GstQuery
* @format: the format to set for the @segment_start and @segment_end values
* @seekable: the seekable flag to set
* @segment_start: the segment_start to set
* @segment_end: the segment_end to set
*
* Parse a seeking query, writing the format into @format, and
* other results into the passed parameters, if the respective parameters
* are non-NULL
*/
void
gst_query_parse_seeking (GstQuery * query, GstFormat * format,
gboolean * seekable, gint64 * segment_start, gint64 * segment_end)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_SEEKING);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (seekable)
*seekable = g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (SEEKABLE)));
if (segment_start)
*segment_start = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (SEGMENT_START)));
if (segment_end)
*segment_end = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (SEGMENT_END)));
}
/**
* gst_buffer_pool_config_get_allocator:
* @config: (transfer none): a #GstBufferPool configuration
* @allocator: (transfer none): a #GstAllocator
* @params: #GstAllocationParams
*
* Get the allocator and params from @config.
*/
gboolean
gst_buffer_pool_config_get_allocator (GstStructure * config,
GstAllocator ** allocator, GstAllocationParams * params)
{
g_return_val_if_fail (config != NULL, FALSE);
if (allocator)
*allocator = g_value_get_object (gst_structure_id_get_value (config,
GST_QUARK (ALLOCATOR)));
if (params) {
GstAllocationParams *p;
p = g_value_get_boxed (gst_structure_id_get_value (config,
GST_QUARK (PARAMS)));
if (p) {
*params = *p;
} else {
gst_allocation_params_init (params);
}
}
return TRUE;
}
/**
* gst_buffer_pool_config_n_options:
* @config: a #GstBufferPool configuration
*
* Retrieve the number of values currently stored in the
* options array of the @config structure.
*
* Returns: the options array size as a #guint.
*/
guint
gst_buffer_pool_config_n_options (GstStructure * config)
{
const GValue *value;
guint size = 0;
g_return_val_if_fail (config != NULL, 0);
value = gst_structure_id_get_value (config, GST_QUARK (OPTIONS));
if (value) {
size = gst_value_array_get_size (value);
}
return size;
}
/**
* gst_query_parse_buffering_range:
* @query: a GST_QUERY_SEEKING type query #GstQuery
* @format: the format to set for the @segment_start and @segment_end values
* @start: the start to set
* @stop: the stop to set
* @estimated_total: estimated total amount of download time
*
* Parse an available query, writing the format into @format, and
* other results into the passed parameters, if the respective parameters
* are non-NULL
*
* Since: 0.10.20
*/
void
gst_query_parse_buffering_range (GstQuery * query, GstFormat * format,
gint64 * start, gint64 * stop, gint64 * estimated_total)
{
GstStructure *structure;
g_return_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_BUFFERING);
structure = gst_query_get_structure (query);
if (format)
*format = g_value_get_enum (gst_structure_id_get_value (structure,
GST_QUARK (FORMAT)));
if (start)
*start = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (START_VALUE)));
if (stop)
*stop = g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (STOP_VALUE)));
if (estimated_total)
*estimated_total =
g_value_get_int64 (gst_structure_id_get_value (structure,
GST_QUARK (ESTIMATED_TOTAL)));
}
/**
* gst_event_parse_tag:
* @event: a tag event
* @taglist: (out) (transfer none): pointer to metadata list
*
* Parses a tag @event and stores the results in the given @taglist location.
* No reference to the taglist will be returned, it remains valid only until
* the @event is freed. Don't modify or free the taglist, make a copy if you
* want to modify it or store it for later use.
*/
void
gst_event_parse_tag (GstEvent * event, GstTagList ** taglist)
{
const GValue *val;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_TAG);
val = gst_structure_id_get_value (GST_EVENT_STRUCTURE (event),
GST_QUARK (TAGLIST));
if (taglist)
*taglist = (GstTagList *) g_value_get_boxed (val);
}
/**
* gst_event_parse_segment:
* @event: The event to parse
* @segment: (out) (transfer none): a pointer to a #GstSegment
*
* Parses a segment @event and stores the result in the given @segment location.
* @segment remains valid only until the @event is freed. Don't modify the segment
* and make a copy if you want to modify it or store it for later use.
*/
void
gst_event_parse_segment (GstEvent * event, const GstSegment ** segment)
{
GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT);
if (segment) {
structure = GST_EVENT_STRUCTURE (event);
*segment = g_value_get_boxed (gst_structure_id_get_value (structure,
GST_QUARK (SEGMENT)));
}
}
/**
* gst_event_parse_caps:
* @event: The event to parse
* @caps: (out) (transfer none): A pointer to the caps
*
* Get the caps from @event. The caps remains valid as long as @event remains
* valid.
*/
void
gst_event_parse_caps (GstEvent * event, GstCaps ** caps)
{
GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_CAPS);
structure = GST_EVENT_STRUCTURE (event);
if (G_LIKELY (caps))
*caps =
g_value_get_boxed (gst_structure_id_get_value (structure,
GST_QUARK (CAPS)));
}
/**
* gst_event_parse_flush_stop:
* @event: The event to parse
* @reset_time: (out): if time should be reset
*
* Parse the FLUSH_STOP event and retrieve the @reset_time member.
*/
void
gst_event_parse_flush_stop (GstEvent * event, gboolean * reset_time)
{
GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP);
structure = GST_EVENT_STRUCTURE (event);
if (G_LIKELY (reset_time))
*reset_time =
g_value_get_boolean (gst_structure_id_get_value (structure,
GST_QUARK (RESET_TIME)));
}
/**
* gst_event_parse_sink_message:
* @event: The event to query
* @msg: (out) (transfer full): a pointer to store the #GstMessage in.
*
* Parse the sink-message event. Unref @msg after usage.
*/
void
gst_event_parse_sink_message (GstEvent * event, GstMessage ** msg)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_SINK_MESSAGE);
structure = GST_EVENT_STRUCTURE (event);
if (msg)
*msg =
GST_MESSAGE (g_value_dup_boxed (gst_structure_id_get_value
(structure, GST_QUARK (MESSAGE))));
}
/**
* gst_event_parse_latency:
* @event: The event to query
* @latency: A pointer to store the latency in.
*
* Get the latency in the latency event.
*
* Since: 0.10.12
*/
void
gst_event_parse_latency (GstEvent * event, GstClockTime * latency)
{
const GstStructure *structure;
g_return_if_fail (GST_IS_EVENT (event));
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_LATENCY);
structure = gst_event_get_structure (event);
if (latency)
*latency =
g_value_get_uint64 (gst_structure_id_get_value (structure,
GST_QUARK (LATENCY)));
}
/**
* gst_event_parse_stream_start:
* @event: a stream-start event.
* @stream_id: (out) (transfer none): pointer to store the stream-id
*
* Parse a stream-id @event and store the result in the given @stream_id
* location. The string stored in @stream_id must not be modified and will
* remain valid only until @event gets freed. Make a copy if you want to
* modify it or store it for later use.
*/
void
gst_event_parse_stream_start (GstEvent * event, const gchar ** stream_id)
{
const GstStructure *structure;
const GValue *val;
g_return_if_fail (event != NULL);
g_return_if_fail (GST_EVENT_TYPE (event) == GST_EVENT_STREAM_START);
structure = gst_event_get_structure (event);
val = gst_structure_id_get_value (structure, GST_QUARK (STREAM_ID));
if (stream_id)
*stream_id = g_value_get_string (val);
}
/**
* gst_buffer_pool_config_get_params:
* @config: (transfer none): a #GstBufferPool configuration
* @caps: (out) (transfer none) (allow-none): the caps of buffers
* @size: (out) (allow-none): the size of each buffer, not including prefix and padding
* @min_buffers: (out) (allow-none): the minimum amount of buffers to allocate.
* @max_buffers: (out) (allow-none): the maximum amount of buffers to allocate or 0 for unlimited.
*
* Get the configuration values from @config.
*
* Returns: %TRUE if all parameters could be fetched.
*/
gboolean
gst_buffer_pool_config_get_params (GstStructure * config, GstCaps ** caps,
guint * size, guint * min_buffers, guint * max_buffers)
{
g_return_val_if_fail (config != NULL, FALSE);
if (caps) {
*caps = g_value_get_boxed (gst_structure_id_get_value (config,
GST_QUARK (CAPS)));
}
return gst_structure_id_get (config,
GST_QUARK (SIZE), G_TYPE_UINT, size,
GST_QUARK (MIN_BUFFERS), G_TYPE_UINT, min_buffers,
GST_QUARK (MAX_BUFFERS), G_TYPE_UINT, max_buffers, NULL);
}
