gstreamer/gst-libs/gst/video/video-hdr.c

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/* GStreamer
* Copyright (C) <2018-2019> Seungha Yang <seungha.yang@navercorp.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include "video-hdr.h"
#define N_ELEMENT_MASTERING_DISPLAY_INFO 10
#define MASTERING_FORMAT \
"%d:%d:" \
"%d:%d:" \
"%d:%d:" \
"%d:%d:" \
"%d:%d"
#define MASTERING_PRINTF_ARGS(m) \
(m)->display_primaries[0].x, (m)->display_primaries[0].y, \
(m)->display_primaries[1].x, (m)->display_primaries[1].y, \
(m)->display_primaries[2].x, (m)->display_primaries[2].y, \
(m)->white_point.x, (m)->white_point.y, \
(m)->max_display_mastering_luminance, \
(m)->min_display_mastering_luminance
/* g_ascii_string_to_unsigned is available since 2.54. Get rid of this wrapper
* when we bump the version in 1.18 */
#if !GLIB_CHECK_VERSION(2,54,0)
#define g_ascii_string_to_unsigned video_hdr_ascii_string_to_unsigned
static gboolean
video_hdr_ascii_string_to_unsigned (const gchar * str, guint base, guint64 min,
guint64 max, guint64 * out_num, GError ** error)
{
gchar *endptr = NULL;
*out_num = g_ascii_strtoull (str, &endptr, base);
if (errno)
return FALSE;
if (endptr == str)
return FALSE;
return TRUE;
}
#endif
/**
* gst_video_mastering_display_info_init:
* @minfo: a #GstVideoMasteringDisplayInfo
*
* Initialize @minfo
*
* Since: 1.18
*/
void
gst_video_mastering_display_info_init (GstVideoMasteringDisplayInfo * minfo)
{
g_return_if_fail (minfo != NULL);
memset (minfo, 0, sizeof (GstVideoMasteringDisplayInfo));
}
/**
* gst_video_mastering_display_info_from_string:
* @minfo: (out): a #GstVideoMasteringDisplayInfo
* @mastering: a #GstStructure representing #GstVideoMasteringDisplayInfo
*
* Extract #GstVideoMasteringDisplayInfo from @mastering
*
* Returns: %TRUE if @minfo was filled with @mastering
*
* Since: 1.18
*/
gboolean
gst_video_mastering_display_info_from_string (GstVideoMasteringDisplayInfo *
minfo, const gchar * mastering)
{
gboolean ret = FALSE;
gchar **split;
gint i;
gint idx = 0;
guint64 val;
g_return_val_if_fail (minfo != NULL, FALSE);
g_return_val_if_fail (mastering != NULL, FALSE);
split = g_strsplit (mastering, ":", -1);
if (g_strv_length (split) != N_ELEMENT_MASTERING_DISPLAY_INFO)
goto out;
for (i = 0; i < G_N_ELEMENTS (minfo->display_primaries); i++) {
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT16, &val, NULL))
goto out;
minfo->display_primaries[i].x = (guint16) val;
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT16, &val, NULL))
goto out;
minfo->display_primaries[i].y = (guint16) val;
}
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT16, &val, NULL))
goto out;
minfo->white_point.x = (guint16) val;
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT16, &val, NULL))
goto out;
minfo->white_point.y = (guint16) val;
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT32, &val, NULL))
goto out;
minfo->max_display_mastering_luminance = (guint32) val;
if (!g_ascii_string_to_unsigned (split[idx++],
10, 0, G_MAXUINT32, &val, NULL))
goto out;
minfo->min_display_mastering_luminance = (guint32) val;
ret = TRUE;
out:
g_strfreev (split);
if (!ret)
gst_video_mastering_display_info_init (minfo);
return ret;
}
/**
* gst_video_mastering_display_info_to_string:
* @minfo: a #GstVideoMasteringDisplayInfo
*
* Convert @minfo to its string representation
*
* Returns: (transfer full): a string representation of @minfo
*
* Since: 1.18
*/
gchar *
gst_video_mastering_display_info_to_string (const GstVideoMasteringDisplayInfo *
minfo)
{
g_return_val_if_fail (minfo != NULL, NULL);
return g_strdup_printf (MASTERING_FORMAT, MASTERING_PRINTF_ARGS (minfo));
}
/**
* gst_video_mastering_display_info_is_equal:
* @minfo: a #GstVideoMasteringDisplayInfo
* @other: a #GstVideoMasteringDisplayInfo
*
* Checks equality between @minfo and @other.
*
* Returns: %TRUE if @minfo and @other are equal.
*
* Since: 1.18
*/
gboolean
gst_video_mastering_display_info_is_equal (const GstVideoMasteringDisplayInfo *
minfo, const GstVideoMasteringDisplayInfo * other)
{
gint i;
g_return_val_if_fail (minfo != NULL, FALSE);
g_return_val_if_fail (other != NULL, FALSE);
for (i = 0; i < G_N_ELEMENTS (minfo->display_primaries); i++) {
if (minfo->display_primaries[i].x != other->display_primaries[i].x ||
minfo->display_primaries[i].y != other->display_primaries[i].y)
return FALSE;
}
if (minfo->white_point.x != other->white_point.x ||
minfo->white_point.y != other->white_point.y ||
minfo->max_display_mastering_luminance !=
other->max_display_mastering_luminance
|| minfo->min_display_mastering_luminance !=
other->min_display_mastering_luminance)
return FALSE;
return TRUE;
}
/**
* gst_video_mastering_display_info_from_caps:
* @minfo: a #GstVideoMasteringDisplayInfo
* @caps: a #GstCaps
*
* Parse @caps and update @minfo
*
* Returns: %TRUE if @caps has #GstVideoMasteringDisplayInfo and could be parsed
*
* Since: 1.18
*/
gboolean
gst_video_mastering_display_info_from_caps (GstVideoMasteringDisplayInfo *
minfo, const GstCaps * caps)
{
GstStructure *structure;
const gchar *s;
g_return_val_if_fail (minfo != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
structure = gst_caps_get_structure (caps, 0);
if ((s = gst_structure_get_string (structure,
"mastering-display-info")) == NULL)
return FALSE;
return gst_video_mastering_display_info_from_string (minfo, s);
}
/**
* gst_video_mastering_display_info_add_to_caps:
* @minfo: a #GstVideoMasteringDisplayInfo
* @caps: a #GstCaps
*
* Set string representation of @minfo to @caps
*
* Returns: %TRUE if @minfo was successfully set to @caps
*
* Since: 1.18
*/
gboolean
gst_video_mastering_display_info_add_to_caps (const GstVideoMasteringDisplayInfo
* minfo, GstCaps * caps)
{
gchar *s;
g_return_val_if_fail (minfo != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
g_return_val_if_fail (gst_caps_is_writable (caps), FALSE);
s = gst_video_mastering_display_info_to_string (minfo);
if (!s)
return FALSE;
gst_caps_set_simple (caps, "mastering-display-info", G_TYPE_STRING, s, NULL);
g_free (s);
return TRUE;
}
/**
* gst_video_content_light_level_init:
* @linfo: a #GstVideoContentLightLevel
*
* Initialize @linfo
*
* Since: 1.18
*/
void
gst_video_content_light_level_init (GstVideoContentLightLevel * linfo)
{
g_return_if_fail (linfo != NULL);
memset (linfo, 0, sizeof (GstVideoContentLightLevel));
}
/**
* gst_video_content_light_level_from_string:
* @linfo: a #GstVideoContentLightLevel
* @level: a content-light-level string from caps
*
* Parse the value of content-light-level caps field and update @minfo
* with the parsed values.
*
* Returns: %TRUE if @linfo points to valid #GstVideoContentLightLevel.
*
* Since: 1.18
*/
gboolean
gst_video_content_light_level_from_string (GstVideoContentLightLevel * linfo,
const gchar * level)
{
gboolean ret = FALSE;
gchar **split;
guint64 val;
g_return_val_if_fail (linfo != NULL, FALSE);
g_return_val_if_fail (level != NULL, FALSE);
split = g_strsplit (level, ":", -1);
if (g_strv_length (split) != 2)
goto out;
if (!g_ascii_string_to_unsigned (split[0], 10, 0, G_MAXUINT16, &val, NULL))
goto out;
linfo->max_content_light_level = (guint16) val;
if (!g_ascii_string_to_unsigned (split[1], 10, 0, G_MAXUINT16, &val, NULL))
goto out;
linfo->max_frame_average_light_level = (guint16) val;
ret = TRUE;
out:
g_strfreev (split);
if (!ret)
gst_video_content_light_level_init (linfo);
return ret;
}
/**
* gst_video_content_light_level_to_string:
* @linfo: a #GstVideoContentLightLevel
*
* Convert @linfo to its string representation.
*
* Returns: (transfer full): a string representation of @linfo.
*
* Since: 1.18
*/
gchar *
gst_video_content_light_level_to_string (const GstVideoContentLightLevel *
linfo)
{
g_return_val_if_fail (linfo != NULL, NULL);
return g_strdup_printf ("%d:%d",
linfo->max_content_light_level, linfo->max_frame_average_light_level);
}
/**
* gst_video_content_light_level_from_caps:
* @linfo: a #GstVideoContentLightLevel
* @caps: a #GstCaps
*
* Parse @caps and update @linfo
*
* Returns: if @caps has #GstVideoContentLightLevel and could be parsed
*
* Since: 1.18
*/
gboolean
gst_video_content_light_level_from_caps (GstVideoContentLightLevel * linfo,
const GstCaps * caps)
{
GstStructure *structure;
const gchar *s;
g_return_val_if_fail (linfo != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
structure = gst_caps_get_structure (caps, 0);
if ((s = gst_structure_get_string (structure, "content-light-level")) == NULL)
return FALSE;
return gst_video_content_light_level_from_string (linfo, s);
}
/**
* gst_video_content_light_level_add_to_caps:
* @linfo: a #GstVideoContentLightLevel
* @caps: a #GstCaps
*
* Parse @caps and update @linfo
*
* Returns: %TRUE if @linfo was successfully set to @caps
*
* Since: 1.18
*/
gboolean
gst_video_content_light_level_add_to_caps (const GstVideoContentLightLevel *
linfo, GstCaps * caps)
{
gchar *s;
g_return_val_if_fail (linfo != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
g_return_val_if_fail (gst_caps_is_writable (caps), FALSE);
s = gst_video_content_light_level_to_string (linfo);
gst_caps_set_simple (caps, "content-light-level", G_TYPE_STRING, s, NULL);
g_free (s);
return TRUE;
}