almost complete implementation

2026-06-07 00:40:27 +03:00
parent ac1015d603
commit ad945bbbaa
175 changed files with 38200 additions and 1 deletions
@@ -0,0 +1,117 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2018, Two Orioles, LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef DAV1D_DATA_H
+#define DAV1D_DATA_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Dav1dData {
+    const uint8_t *data; ///< data pointer
+    size_t sz; ///< data size
+    struct Dav1dRef *ref; ///< allocation origin
+    Dav1dDataProps m; ///< user provided metadata passed to the output picture
+} Dav1dData;
+
+/**
+ * Allocate data.
+ *
+ * @param data Input context.
+ * @param   sz Size of the data that should be allocated.
+ *
+ * @return Pointer to the allocated buffer on success. NULL on error.
+ */
+DAV1D_API uint8_t * dav1d_data_create(Dav1dData *data, size_t sz);
+
+/**
+ * Wrap an existing data array.
+ *
+ * @param          data Input context.
+ * @param           buf The data to be wrapped.
+ * @param            sz Size of the data.
+ * @param free_callback Function to be called when we release our last
+ *                      reference to this data. In this callback, $buf will be
+ *                      the $buf argument to this function, and $cookie will
+ *                      be the $cookie input argument to this function.
+ * @param        cookie Opaque parameter passed to free_callback().
+ *
+ * @return 0 on success. A negative DAV1D_ERR value on error.
+ */
+DAV1D_API int dav1d_data_wrap(Dav1dData *data, const uint8_t *buf, size_t sz,
+                              void (*free_callback)(const uint8_t *buf, void *cookie),
+                              void *cookie);
+
+/**
+ * Wrap a user-provided data pointer into a reference counted object.
+ *
+ * data->m.user_data field will initialized to wrap the provided $user_data
+ * pointer.
+ *
+ * $free_callback will be called on the same thread that released the last
+ * reference. If frame threading is used, make sure $free_callback is
+ * thread-safe.
+ *
+ * @param          data Input context.
+ * @param     user_data The user data to be wrapped.
+ * @param free_callback Function to be called when we release our last
+ *                      reference to this data. In this callback, $user_data
+ *                      will be the $user_data argument to this function, and
+ *                      $cookie will be the $cookie input argument to this
+ *                      function.
+ * @param        cookie Opaque parameter passed to $free_callback.
+ *
+ * @return 0 on success. A negative DAV1D_ERR value on error.
+ */
+DAV1D_API int dav1d_data_wrap_user_data(Dav1dData *data,
+                                        const uint8_t *user_data,
+                                        void (*free_callback)(const uint8_t *user_data,
+                                                              void *cookie),
+                                        void *cookie);
+
+/**
+ * Free the data reference.
+ *
+ * The reference count for data->m.user_data will be decremented (if it has been
+ * initialized with dav1d_data_wrap_user_data). The $data object will be memset
+ * to 0.
+ *
+ * @param data Input context.
+ */
+DAV1D_API void dav1d_data_unref(Dav1dData *data);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* DAV1D_DATA_H */