diff options
Diffstat (limited to 'third_party/dav1d/include/dav1d/data.h')
| -rw-r--r-- | third_party/dav1d/include/dav1d/data.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/third_party/dav1d/include/dav1d/data.h b/third_party/dav1d/include/dav1d/data.h new file mode 100644 index 0000000000..f945a04240 --- /dev/null +++ b/third_party/dav1d/include/dav1d/data.h @@ -0,0 +1,109 @@ +/* + * 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" + +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); + +#endif /* DAV1D_DATA_H */ |