[Pkg-gstreamer-commits] [gstreamer-vaapi] 87/176: utils: h264: add helpers for profile and level string mappings.
Vincent Cheng
vcheng at moszumanska.debian.org
Tue Jun 3 08:09:30 UTC 2014
This is an automated email from the git hooks/post-receive script.
vcheng pushed a commit to branch upstream
in repository gstreamer-vaapi.
commit b0c2ac415941422fd8cefda2e1874b885b0cc330
Author: Gwenole Beauchesne <gwenole.beauchesne at intel.com>
Date: Fri Jan 10 19:37:44 2014 +0100
utils: h264: add helpers for profile and level string mappings.
Add profile and level helper functions to convert to/from strings.
---
gst-libs/gst/vaapi/gstvaapiutils_h264.c | 142 ++++++++++++++++++++++++++++++++
gst-libs/gst/vaapi/gstvaapiutils_h264.h | 16 ++++
2 files changed, 158 insertions(+)
diff --git a/gst-libs/gst/vaapi/gstvaapiutils_h264.c b/gst-libs/gst/vaapi/gstvaapiutils_h264.c
index e78adda..20cc474 100644
--- a/gst-libs/gst/vaapi/gstvaapiutils_h264.c
+++ b/gst-libs/gst/vaapi/gstvaapiutils_h264.c
@@ -24,6 +24,55 @@
#include <gst/codecparsers/gsth264parser.h>
#include "gstvaapiutils_h264_priv.h"
+struct map
+{
+ guint value;
+ const gchar *name;
+};
+
+/* Profile string map */
+static const struct map gst_vaapi_h264_profile_map[] = {
+/* *INDENT-OFF* */
+ { GST_VAAPI_PROFILE_H264_CONSTRAINED_BASELINE, "constrained-baseline" },
+ { GST_VAAPI_PROFILE_H264_BASELINE, "baseline" },
+ { GST_VAAPI_PROFILE_H264_MAIN, "main" },
+ { GST_VAAPI_PROFILE_H264_EXTENDED, "extended" },
+ { GST_VAAPI_PROFILE_H264_HIGH, "high" },
+ { GST_VAAPI_PROFILE_H264_HIGH10, "high-10" },
+ { GST_VAAPI_PROFILE_H264_HIGH_422, "high-4:2:2" },
+ { GST_VAAPI_PROFILE_H264_HIGH_444, "high-4:4:4" },
+ { GST_VAAPI_PROFILE_H264_SCALABLE_BASELINE, "scalable-baseline" },
+ { GST_VAAPI_PROFILE_H264_SCALABLE_HIGH, "scalable-high" },
+ { GST_VAAPI_PROFILE_H264_STEREO_HIGH, "stereo-high" },
+ { GST_VAAPI_PROFILE_H264_MULTIVIEW_HIGH, "multiview-high" },
+ { 0, NULL }
+/* *INDENT-ON* */
+};
+
+/* Level string map */
+static const struct map gst_vaapi_h264_level_map[] = {
+/* *INDENT-OFF* */
+ { GST_VAAPI_LEVEL_H264_L1, "1" },
+ { GST_VAAPI_LEVEL_H264_L1b, "1b" },
+ { GST_VAAPI_LEVEL_H264_L1_1, "1.1" },
+ { GST_VAAPI_LEVEL_H264_L1_2, "1.2" },
+ { GST_VAAPI_LEVEL_H264_L1_3, "1.3" },
+ { GST_VAAPI_LEVEL_H264_L2, "2" },
+ { GST_VAAPI_LEVEL_H264_L2_1, "2.1" },
+ { GST_VAAPI_LEVEL_H264_L2_2, "2.2" },
+ { GST_VAAPI_LEVEL_H264_L3, "3" },
+ { GST_VAAPI_LEVEL_H264_L3_1, "3.1" },
+ { GST_VAAPI_LEVEL_H264_L3_2, "3.2" },
+ { GST_VAAPI_LEVEL_H264_L4, "4" },
+ { GST_VAAPI_LEVEL_H264_L4_1, "4.1" },
+ { GST_VAAPI_LEVEL_H264_L4_2, "4.2" },
+ { GST_VAAPI_LEVEL_H264_L5, "5" },
+ { GST_VAAPI_LEVEL_H264_L5_1, "5.1" },
+ { GST_VAAPI_LEVEL_H264_L5_2, "5.2" },
+ { 0, NULL }
+/* *INDENT-ON* */
+};
+
/* Table A-1 - Level limits */
/* *INDENT-OFF* */
static const GstVaapiH264LevelLimits gst_vaapi_h264_level_limits[] = {
@@ -49,6 +98,35 @@ static const GstVaapiH264LevelLimits gst_vaapi_h264_level_limits[] = {
};
/* *INDENT-ON* */
+/* Lookup value in map */
+static const struct map *
+map_lookup_value (const struct map *m, guint value)
+{
+ g_return_val_if_fail (m != NULL, NULL);
+
+ for (; m->name != NULL; m++) {
+ if (m->value == value)
+ return m;
+ }
+ return NULL;
+}
+
+/* Lookup name in map */
+static const struct map *
+map_lookup_name (const struct map *m, const gchar * name)
+{
+ g_return_val_if_fail (m != NULL, NULL);
+
+ if (!name)
+ return NULL;
+
+ for (; m->name != NULL; m++) {
+ if (strcmp (m->name, name) == 0)
+ return m;
+ }
+ return NULL;
+}
+
/** Returns GstVaapiProfile from H.264 profile_idc value */
GstVaapiProfile
gst_vaapi_utils_h264_get_profile (guint8 profile_idc)
@@ -146,6 +224,25 @@ gst_vaapi_utils_h264_get_profile_idc (GstVaapiProfile profile)
return profile_idc;
}
+/** Returns GstVaapiProfile from a string representation */
+GstVaapiProfile
+gst_vaapi_utils_h264_get_profile_from_string (const gchar * str)
+{
+ const struct map *const m = map_lookup_name (gst_vaapi_h264_profile_map, str);
+
+ return m ? (GstVaapiProfile) m->value : GST_VAAPI_PROFILE_UNKNOWN;
+}
+
+/** Returns a string representation for the supplied H.264 profile */
+const gchar *
+gst_vaapi_utils_h264_get_profile_string (GstVaapiProfile profile)
+{
+ const struct map *const m =
+ map_lookup_value (gst_vaapi_h264_profile_map, profile);
+
+ return m ? m->name : NULL;
+}
+
/** Returns GstVaapiLevelH264 from H.264 level_idc value */
GstVaapiLevelH264
gst_vaapi_utils_h264_get_level (guint8 level_idc)
@@ -174,6 +271,51 @@ gst_vaapi_utils_h264_get_level_idc (GstVaapiLevelH264 level)
return llp ? llp->level_idc : 0;
}
+/** Returns GstVaapiLevelH264 from a string representation */
+GstVaapiLevelH264
+gst_vaapi_utils_h264_get_level_from_string (const gchar * str)
+{
+ gint v, level_idc = 0;
+
+ if (!str || !str[0])
+ goto not_found;
+
+ v = g_ascii_digit_value (str[0]);
+ if (v < 0)
+ goto not_found;
+ level_idc = v * 10;
+
+ switch (str[1]) {
+ case '\0':
+ break;
+ case '.':
+ v = g_ascii_digit_value (str[2]);
+ if (v < 0 || str[3] != '\0')
+ goto not_found;
+ level_idc += v;
+ break;
+ case 'b':
+ if (level_idc == 10 && str[2] == '\0')
+ return GST_VAAPI_LEVEL_H264_L1b;
+ // fall-trough
+ default:
+ goto not_found;
+ }
+ return gst_vaapi_utils_h264_get_level (level_idc);
+
+not_found:
+ return (GstVaapiLevelH264) 0;
+}
+
+/** Returns a string representation for the supplied H.264 level */
+const gchar *
+gst_vaapi_utils_h264_get_level_string (GstVaapiLevelH264 level)
+{
+ if (level < GST_VAAPI_LEVEL_H264_L1 || level > GST_VAAPI_LEVEL_H264_L5_2)
+ return NULL;
+ return gst_vaapi_h264_level_map[level - GST_VAAPI_LEVEL_H264_L1].name;
+}
+
/** Returns level limits as specified in Table A-1 of the H.264 standard */
const GstVaapiH264LevelLimits *
gst_vaapi_utils_h264_get_level_limits (GstVaapiLevelH264 level)
diff --git a/gst-libs/gst/vaapi/gstvaapiutils_h264.h b/gst-libs/gst/vaapi/gstvaapiutils_h264.h
index 2aee036..400fc5c 100644
--- a/gst-libs/gst/vaapi/gstvaapiutils_h264.h
+++ b/gst-libs/gst/vaapi/gstvaapiutils_h264.h
@@ -71,6 +71,22 @@ typedef enum
GST_VAAPI_LEVEL_H264_L5_2,
} GstVaapiLevelH264;
+/* Returns GstVaapiProfile from a string representation */
+GstVaapiProfile
+gst_vaapi_utils_h264_get_profile_from_string (const gchar * str);
+
+/* Returns a string representation for the supplied H.264 profile */
+const gchar *
+gst_vaapi_utils_h264_get_profile_string (GstVaapiProfile profile);
+
+/* Returns GstVaapiLevelH264 from a string representation */
+GstVaapiLevelH264
+gst_vaapi_utils_h264_get_level_from_string (const gchar * str);
+
+/* Returns a string representation for the supplied H.264 level */
+const gchar *
+gst_vaapi_utils_h264_get_level_string (GstVaapiLevelH264 level);
+
G_END_DECLS
#endif /* GST_VAAPI_UTILS_H264_H */
--
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