frame.h (1891B)
1 /* 2 * Copyright © 2021, VideoLAN and dav1d authors 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this 9 * list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef DAV1D_COMMON_FRAME_H 28 #define DAV1D_COMMON_FRAME_H 29 30 /* 31 * Checks whether Dav1dFrameType == INTER || == SWITCH 32 * Both are defined as odd numbers {1, 3} and therefore have the LSB set. 33 * See also: AV1 spec 6.8.2 34 */ 35 #define IS_INTER_OR_SWITCH(frame_header) \ 36 ((frame_header)->frame_type & 1) 37 38 /* 39 * Checks whether Dav1dFrameType == KEY || == INTRA 40 * See also: AV1 spec 6.8.2 41 */ 42 #define IS_KEY_OR_INTRA(frame_header) \ 43 (!IS_INTER_OR_SWITCH(frame_header)) 44 45 #endif /* DAV1D_COMMON_FRAME_H */