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video-info: expose InterlaceMode conversion to/from string

Browse source 
Expose the methods used to convert a GstVideoInterlaceMode to and
from a string.
This commit is contained in:
Wim Taymans 2015-04-28 12:01:02 +02:00
parent 69f66aff9e
commit b3db5883e1
3 changed files with 33 additions and 6 deletions
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34
gst-libs/gst/video/video-info.c
View file

@ -153,8 +153,18 @@ static const gchar *interlace_mode[] = {
"fields"
};
static const gchar *
gst_interlace_mode_to_string (GstVideoInterlaceMode mode)
/**
* gst_video_interlace_mode_to_string:
* @mode: a #GstVideoInterlaceMode
*
* Convert @mode to its string representation.
*
* Returns: @mode as a string or NULL if @mode in invalid.
*
* Since: 1.6
*/
const gchar *
gst_video_interlace_mode_to_string (GstVideoInterlaceMode mode)
{
if (((guint) mode) >= G_N_ELEMENTS (interlace_mode))
return NULL;
@ -162,8 +172,20 @@ gst_interlace_mode_to_string (GstVideoInterlaceMode mode)
return interlace_mode[mode];
}
static GstVideoInterlaceMode
gst_interlace_mode_from_string (const gchar * mode)
/**
* gst_video_interlace_mode_from_string:
* @mode: a mode
*
* Convert @mode to a #GstVideoInterlaceMode
*
* Returns: the #GstVideoInterlaceMode of @mode or
* #GST_VIDEO_INTERLACE_MODE_PROGRESSIVE when @mode is not a valid
* string representation for a #GstVideoInterlaceMode.
*
* Since: 1.6
*/
GstVideoInterlaceMode
gst_video_interlace_mode_from_string (const gchar * mode)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (interlace_mode); i++) {
@ -245,7 +267,7 @@ gst_video_info_from_caps (GstVideoInfo * info, const GstCaps * caps)
}
if ((s = gst_structure_get_string (structure, "interlace-mode")))
info->interlace_mode = gst_interlace_mode_from_string (s);
info->interlace_mode = gst_video_interlace_mode_from_string (s);
else
info->interlace_mode = GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
@ -388,7 +410,7 @@ gst_video_info_to_caps (GstVideoInfo * info)
"pixel-aspect-ratio", GST_TYPE_FRACTION, info->par_n, info->par_d, NULL);
gst_caps_set_simple (caps, "interlace-mode", G_TYPE_STRING,
gst_interlace_mode_to_string (info->interlace_mode), NULL);
gst_video_interlace_mode_to_string (info->interlace_mode), NULL);
if (info->chroma_site != GST_VIDEO_CHROMA_SITE_UNKNOWN)
gst_caps_set_simple (caps, "chroma-site", G_TYPE_STRING,

3
gst-libs/gst/video/video-info.h
View file

@ -55,6 +55,9 @@ typedef enum {
GST_VIDEO_INTERLACE_MODE_FIELDS
} GstVideoInterlaceMode;
const gchar * gst_video_interlace_mode_to_string (GstVideoInterlaceMode mode);
GstVideoInterlaceMode gst_video_interlace_mode_from_string (const gchar * mode);
/**
* GstVideoFlags:
* @GST_VIDEO_FLAG_NONE: no flags

2
win32/common/libgstvideo.def
View file

@ -177,7 +177,9 @@ EXPORTS
gst_video_info_is_equal
gst_video_info_set_format
gst_video_info_to_caps
gst_video_interlace_mode_from_string
gst_video_interlace_mode_get_type
gst_video_interlace_mode_to_string
gst_video_meta_api_get_type
gst_video_meta_get_info
gst_video_meta_map