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Diffstat (limited to '')
| -rw-r--r-- | third_party/dav1d/src/ctx.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/dav1d/src/ctx.h b/third_party/dav1d/src/ctx.h new file mode 100644 index 0000000000..d0e1f310ae --- /dev/null +++ b/third_party/dav1d/src/ctx.h @@ -0,0 +1,91 @@ +/* + * 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_SRC_CTX_H +#define DAV1D_SRC_CTX_H + +#include <stdint.h> + +#include "common/attributes.h" + +union alias64 { uint64_t u64; uint8_t u8[8]; } ATTR_ALIAS; +union alias32 { uint32_t u32; uint8_t u8[4]; } ATTR_ALIAS; +union alias16 { uint16_t u16; uint8_t u8[2]; } ATTR_ALIAS; +union alias8 { uint8_t u8; } ATTR_ALIAS; + +#define set_ctx_rep4(type, var, off, val) do { \ + const uint64_t const_val = val; \ + ((union alias64 *) &var[off + 0])->u64 = const_val; \ + ((union alias64 *) &var[off + 8])->u64 = const_val; \ + ((union alias64 *) &var[off + 16])->u64 = const_val; \ + ((union alias64 *) &var[off + 24])->u64 = const_val; \ + } while (0) +#define set_ctx_rep2(type, var, off, val) do { \ + const uint64_t const_val = val; \ + ((union alias64 *) &var[off + 0])->u64 = const_val; \ + ((union alias64 *) &var[off + 8])->u64 = const_val; \ + } while (0) +#define set_ctx_rep1(typesz, var, off, val) \ + ((union alias##typesz *) &var[off])->u##typesz = val +#define case_set(var, dir, diridx, off) \ + switch (var) { \ + case 1: set_ctx( 8, dir, diridx, off, 0x01, set_ctx_rep1); break; \ + case 2: set_ctx(16, dir, diridx, off, 0x0101, set_ctx_rep1); break; \ + case 4: set_ctx(32, dir, diridx, off, 0x01010101U, set_ctx_rep1); break; \ + case 8: set_ctx(64, dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep1); break; \ + case 16: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep2); break; \ + case 32: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep4); break; \ + } +#define case_set_upto16(var, dir, diridx, off) \ + switch (var) { \ + case 1: set_ctx( 8, dir, diridx, off, 0x01, set_ctx_rep1); break; \ + case 2: set_ctx(16, dir, diridx, off, 0x0101, set_ctx_rep1); break; \ + case 4: set_ctx(32, dir, diridx, off, 0x01010101U, set_ctx_rep1); break; \ + case 8: set_ctx(64, dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep1); break; \ + case 16: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep2); break; \ + } +#define case_set_upto32_with_default(var, dir, diridx, off) \ + switch (var) { \ + case 1: set_ctx( 8, dir, diridx, off, 0x01, set_ctx_rep1); break; \ + case 2: set_ctx(16, dir, diridx, off, 0x0101, set_ctx_rep1); break; \ + case 4: set_ctx(32, dir, diridx, off, 0x01010101U, set_ctx_rep1); break; \ + case 8: set_ctx(64, dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep1); break; \ + case 16: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep2); break; \ + case 32: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep4); break; \ + default: default_memset(dir, diridx, off, var); break; \ + } +#define case_set_upto16_with_default(var, dir, diridx, off) \ + switch (var) { \ + case 1: set_ctx( 8, dir, diridx, off, 0x01, set_ctx_rep1); break; \ + case 2: set_ctx(16, dir, diridx, off, 0x0101, set_ctx_rep1); break; \ + case 4: set_ctx(32, dir, diridx, off, 0x01010101U, set_ctx_rep1); break; \ + case 8: set_ctx(64, dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep1); break; \ + case 16: set_ctx( , dir, diridx, off, 0x0101010101010101ULL, set_ctx_rep2); break; \ + default: default_memset(dir, diridx, off, var); break; \ + } + +#endif /* DAV1D_SRC_CTX_H */ |