API changes, most recent first:
+2017-03-xx - xxxxxxx - lavu 55.35.0 - hwcontext.h
+ Add AV_HWDEVICE_TYPE_NONE, av_hwdevice_find_type_by_name(),
+ av_hwdevice_get_type_name() and av_hwdevice_iterate_types().
+
2017-03-xx - xxxxxxx - lavu 55.34.0 - hwcontext.h
Add av_hwdevice_ctx_create_derived().
NULL,
};
+const char *hw_type_names[] = {
+ [AV_HWDEVICE_TYPE_CUDA] = "cuda",
+ [AV_HWDEVICE_TYPE_DXVA2] = "dxva2",
+ [AV_HWDEVICE_TYPE_QSV] = "qsv",
+ [AV_HWDEVICE_TYPE_VAAPI] = "vaapi",
+ [AV_HWDEVICE_TYPE_VDPAU] = "vdpau",
+};
+
+enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name)
+{
+ int type;
+ for (type = 0; type < FF_ARRAY_ELEMS(hw_type_names); type++) {
+ if (hw_type_names[type] && !strcmp(hw_type_names[type], name))
+ return type;
+ }
+ return AV_HWDEVICE_TYPE_NONE;
+}
+
+const char *av_hwdevice_get_type_name(enum AVHWDeviceType type)
+{
+ if (type >= 0 && type < FF_ARRAY_ELEMS(hw_type_names))
+ return hw_type_names[type];
+ else
+ return NULL;
+}
+
+enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev)
+{
+ enum AVHWDeviceType next;
+ int i, set = 0;
+ for (i = 0; hw_table[i]; i++) {
+ if (prev != AV_HWDEVICE_TYPE_NONE && hw_table[i]->type <= prev)
+ continue;
+ if (!set || hw_table[i]->type < next) {
+ next = hw_table[i]->type;
+ set = 1;
+ }
+ }
+ return set ? next : AV_HWDEVICE_TYPE_NONE;
+}
+
static const AVClass hwdevice_ctx_class = {
.class_name = "AVHWDeviceContext",
.item_name = av_default_item_name,
AV_HWDEVICE_TYPE_VAAPI,
AV_HWDEVICE_TYPE_DXVA2,
AV_HWDEVICE_TYPE_QSV,
+ AV_HWDEVICE_TYPE_NONE,
};
typedef struct AVHWDeviceInternal AVHWDeviceInternal;
int width, height;
} AVHWFramesContext;
+/**
+ * Look up an AVHWDeviceType by name.
+ *
+ * @param name String name of the device type (case-insensitive).
+ * @return The type from enum AVHWDeviceType, or AV_HWDEVICE_TYPE_NONE if
+ * not found.
+ */
+enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name);
+
+/** Get the string name of an AVHWDeviceType.
+ *
+ * @param type Type from enum AVHWDeviceType.
+ * @return Pointer to a static string containing the name, or NULL if the type
+ * is not valid.
+ */
+const char *av_hwdevice_get_type_name(enum AVHWDeviceType type);
+
+/**
+ * Iterate over supported device types.
+ *
+ * @param type AV_HWDEVICE_TYPE_NONE initially, then the previous type
+ * returned by this function in subsequent iterations.
+ * @return The next usable device type from enum AVHWDeviceType, or
+ * AV_HWDEVICE_TYPE_NONE if there are no more.
+ */
+enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev);
+
/**
* Allocate an AVHWDeviceContext for a given pixel format.
*
*/
#define LIBAVUTIL_VERSION_MAJOR 55
-#define LIBAVUTIL_VERSION_MINOR 34
+#define LIBAVUTIL_VERSION_MINOR 35
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \