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| 5362 | serge | 1 | /* |
| 2 | * Copyright (c) 2007-2011 Intel Corporation. All Rights Reserved. |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the |
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| 6 | * "Software"), to deal in the Software without restriction, including |
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| 7 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 8 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 9 | * permit persons to whom the Software is furnished to do so, subject to |
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| 10 | * the following conditions: |
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| 11 | * |
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| 12 | * The above copyright notice and this permission notice (including the |
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| 13 | * next paragraph) shall be included in all copies or substantial portions |
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| 14 | * of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 19 | * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 20 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 22 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | /** |
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| 26 | * \file va_compat.h |
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| 27 | * \brief The Compatibility API |
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| 28 | * |
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| 29 | * This file contains the \ref api_compat "Compatibility API". |
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| 30 | */ |
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| 31 | |||
| 32 | #ifndef VA_COMPAT_H |
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| 33 | #define VA_COMPAT_H |
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| 34 | |||
| 35 | #ifdef __cplusplus |
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| 36 | extern "C" { |
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| 37 | #endif |
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| 38 | |||
| 39 | /** |
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| 40 | * \defgroup api_compat Compatibility API |
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| 41 | * |
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| 42 | * The Compatibility API allows older programs that are not ported to |
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| 43 | * the current API to still build and run correctly. In particular, |
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| 44 | * this exposes older API to allow for backwards source compatibility. |
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| 45 | * |
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| 46 | * @{ |
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| 47 | */ |
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| 48 | |||
| 49 | /** |
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| 50 | * Makes a string literal out of the macro argument |
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| 51 | */ |
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| 52 | #define VA_CPP_HELPER_STRINGIFY(x) \ |
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| 53 | VA_CPP_HELPER_STRINGIFY_(x) |
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| 54 | #define VA_CPP_HELPER_STRINGIFY_(x) \ |
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| 55 | #x |
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| 56 | |||
| 57 | /** |
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| 58 | * Concatenates two macro arguments at preprocessing time. |
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| 59 | */ |
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| 60 | #define VA_CPP_HELPER_CONCAT(a, b) \ |
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| 61 | VA_CPP_HELPER_CONCAT_(a, b) |
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| 62 | #define VA_CPP_HELPER_CONCAT_(a, b) \ |
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| 63 | a ## b |
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| 64 | |||
| 65 | /** |
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| 66 | * Generates the number of macro arguments at preprocessing time. |
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| 67 | * |
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| 68 | * |
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| 69 | * Note: this doesn't work for macros with no arguments |
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| 70 | */ |
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| 71 | #define VA_CPP_HELPER_N_ARGS(...) \ |
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| 72 | VA_CPP_HELPER_N_ARGS_(__VA_ARGS__, VA_CPP_HELPER_N_ARGS_LIST_REV()) |
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| 73 | #define VA_CPP_HELPER_N_ARGS_(...) \ |
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| 74 | VA_CPP_HELPER_N_ARGS_LIST(__VA_ARGS__) |
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| 75 | #define VA_CPP_HELPER_N_ARGS_LIST(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a12, a13, a14, a15, a16, N, ...) N |
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| 76 | #define VA_CPP_HELPER_N_ARGS_LIST_REV() \ |
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| 77 | 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 |
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| 78 | |||
| 79 | /** |
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| 80 | * Generates a versioned function alias. |
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| 81 | * |
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| 82 | * VA_CPP_HELPER_ALIAS(vaSomeFunction, 0,32,0) will generate |
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| 83 | * .symber vaSomeFunction_0_32_0, vaSomeFunction@VA_API_0.32.0 |
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| 84 | */ |
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| 85 | #define VA_CPP_HELPER_ALIAS(func, major, minor, micro) \ |
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| 86 | VA_CPP_HELPER_ALIAS_(func, major, minor, micro, "@") |
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| 87 | #define VA_CPP_HELPER_ALIAS_DEFAULT(func, major, minor, micro) \ |
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| 88 | VA_CPP_HELPER_ALIAS_(func, major, minor, micro, "@@") |
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| 89 | #define VA_CPP_HELPER_ALIAS_(func, major, minor, micro, binding) \ |
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| 90 | asm(".symver " #func "_" #major "_" #minor "_" #micro ", " \ |
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| 91 | #func binding "VA_API_" #major "." #minor "." #micro) |
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| 92 | |||
| 93 | /* vaCreateSurfaces() */ |
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| 94 | |||
| 95 | #ifndef VA_COMPAT_DISABLED |
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| 96 | #define vaCreateSurfaces(dpy, ...) \ |
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| 97 | VA_CPP_HELPER_CONCAT(vaCreateSurfaces, \ |
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| 98 | VA_CPP_HELPER_N_ARGS(dpy, __VA_ARGS__)) \ |
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| 99 | (dpy, __VA_ARGS__) |
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| 100 | #endif |
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| 101 | |||
| 102 | #define vaCreateSurfaces6(dpy, width, height, format, num_surfaces, surfaces) \ |
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| 103 | (vaCreateSurfaces)(dpy, format, width, height, surfaces, num_surfaces, \ |
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| 104 | NULL, 0) |
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| 105 | |||
| 106 | #define vaCreateSurfaces8(dpy, format, width, height, surfaces, num_surfaces, attribs, num_attribs) \ |
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| 107 | (vaCreateSurfaces)(dpy, format, width, height, surfaces, num_surfaces, \ |
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| 108 | attribs, num_attribs) |
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| 109 | |||
| 110 | /*@}*/ |
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| 111 | |||
| 112 | #ifdef __cplusplus |
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| 113 | } |
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| 114 | #endif |
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| 115 | |||
| 116 | #endif /* VA_COMPAT_H */ |