API changes, most recent first:
+2016-xx-xx - xxxxxxx - lavu 55.13.0 - hwcontext.h
+ Add av_hwdevice_ctx_create().
+
2016-xx-xx - xxxxxxx - lavc 57.19.1 - avcodec.h
Adjust values for JPEG 2000 profiles.
}
av_freep(constraints);
}
+
+int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type,
+ const char *device, AVDictionary *opts, int flags)
+{
+ AVBufferRef *device_ref = NULL;
+ AVHWDeviceContext *device_ctx;
+ int ret = 0;
+
+ device_ref = av_hwdevice_ctx_alloc(type);
+ if (!device_ref) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ device_ctx = (AVHWDeviceContext*)device_ref->data;
+
+ if (!device_ctx->internal->hw_type->device_create) {
+ ret = AVERROR(ENOSYS);
+ goto fail;
+ }
+
+ ret = device_ctx->internal->hw_type->device_create(device_ctx, device,
+ opts, flags);
+ if (ret < 0)
+ goto fail;
+
+ ret = av_hwdevice_ctx_init(device_ref);
+ if (ret < 0)
+ goto fail;
+
+ *pdevice_ref = device_ref;
+ return 0;
+fail:
+ av_buffer_unref(&device_ref);
+ *pdevice_ref = NULL;
+ return ret;
+}
int av_hwdevice_ctx_init(AVBufferRef *ref);
/**
+ * Open a device of the specified type and create an AVHWDeviceContext for it.
+ *
+ * This is a convenience function intended to cover the simple cases. Callers
+ * who need to fine-tune device creation/management should open the device
+ * manually and then wrap it in an AVHWDeviceContext using
+ * av_hwdevice_ctx_alloc()/av_hwdevice_ctx_init().
+ *
+ * The returned context is already initialized and ready for use, the caller
+ * should not call av_hwdevice_ctx_init() on it. The user_opaque/free fields of
+ * the created AVHWDeviceContext are set by this function and should not be
+ * touched by the caller.
+ *
+ * @param device_ctx On success, a reference to the newly-created device context
+ * will be written here. The reference is owned by the caller
+ * and must be released with av_buffer_unref() when no longer
+ * needed. On failure, NULL will be written to this pointer.
+ * @param type The type of the device to create.
+ * @param device A type-specific string identifying the device to open.
+ * @param opts A dictionary of additional (type-specific) options to use in
+ * opening the device. The dictionary remains owned by the caller.
+ * @param flags currently unused
+ *
+ * @return 0 on success, a negative AVERROR code on failure.
+ */
+int av_hwdevice_ctx_create(AVBufferRef **device_ctx, enum AVHWDeviceType type,
+ const char *device, AVDictionary *opts, int flags);
+
+/**
* Allocate an AVHWFramesContext tied to a given device context.
*
* @param device_ctx a reference to a AVHWDeviceContext. This function will make
*/
#define LIBAVUTIL_VERSION_MAJOR 55
-#define LIBAVUTIL_VERSION_MINOR 12
+#define LIBAVUTIL_VERSION_MINOR 13
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \