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Diffstat (limited to 'src/util/xmlconfig.h')
| -rw-r--r-- | src/util/xmlconfig.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/util/xmlconfig.h b/src/util/xmlconfig.h new file mode 100644 index 00000000000..77aa14c20e0 --- /dev/null +++ b/src/util/xmlconfig.h @@ -0,0 +1,179 @@ +/* + * XML DRI client-side driver configuration + * Copyright (C) 2003 Felix Kuehling + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * FELIX KUEHLING, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE + * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ +/** + * \file xmlconfig.h + * \brief Driver-independent client-side part of the XML configuration + * \author Felix Kuehling + */ + +#ifndef __XMLCONFIG_H +#define __XMLCONFIG_H + +#include "util/mesa-sha1.h" +#include "util/ralloc.h" + +#define STRING_CONF_MAXLEN 25 + +/** \brief Option data types */ +typedef enum driOptionType { + DRI_BOOL, DRI_ENUM, DRI_INT, DRI_FLOAT, DRI_STRING +} driOptionType; + +/** \brief Option value */ +typedef union driOptionValue { + unsigned char _bool; /**< \brief Boolean */ + int _int; /**< \brief Integer or Enum */ + float _float; /**< \brief Floating-point */ + char *_string; /**< \brief String */ +} driOptionValue; + +/** \brief Single range of valid values + * + * For empty ranges (a single value) start == end */ +typedef struct driOptionRange { + driOptionValue start; /**< \brief Start */ + driOptionValue end; /**< \brief End */ +} driOptionRange; + +/** \brief Information about an option */ +typedef struct driOptionInfo { + char *name; /**< \brief Name */ + driOptionType type; /**< \brief Type */ + driOptionRange *ranges; /**< \brief Array of ranges */ + unsigned int nRanges; /**< \brief Number of ranges */ +} driOptionInfo; + +/** \brief Option cache + * + * \li One in <driver>Screen caching option info and the default values + * \li One in each <driver>Context with the actual values for that context */ +typedef struct driOptionCache { + driOptionInfo *info; + /**< \brief Array of option infos + * + * Points to the same array in the screen and all contexts */ + driOptionValue *values; + /**< \brief Array of option values + * + * \li Default values in screen + * \li Actual values in contexts + */ + unsigned int tableSize; + /**< \brief Size of the arrays + * + * In the current implementation it's not actually a size but log2(size). + * The value is the same in the screen and all contexts. */ +} driOptionCache; + +/** \brief Parse XML option info from configOptions + * + * To be called in <driver>CreateScreen + * + * \param info pointer to a driOptionCache that will store the option info + * \param configOptions XML document describing available configuration opts + * + * For the option information to be available to external configuration tools + * it must be a public symbol __driConfigOptions. It is also passed as a + * parameter to driParseOptionInfo in order to avoid driver-independent code + * depending on symbols in driver-specific code. */ +void driParseOptionInfo (driOptionCache *info, + const char *configOptions); +/** \brief Initialize option cache from info and parse configuration files + * + * To be called in <driver>CreateContext. screenNum and driverName select + * device sections. */ +void driParseConfigFiles (driOptionCache *cache, const driOptionCache *info, + int screenNum, const char *driverName); +/** \brief Destroy option info + * + * To be called in <driver>DestroyScreen */ +void driDestroyOptionInfo (driOptionCache *info); +/** \brief Destroy option cache + * + * To be called in <driver>DestroyContext */ +void driDestroyOptionCache (driOptionCache *cache); + +/** \brief Check if there exists a certain option */ +unsigned char driCheckOption (const driOptionCache *cache, const char *name, + driOptionType type); + +/** \brief Query a boolean option value */ +unsigned char driQueryOptionb (const driOptionCache *cache, const char *name); +/** \brief Query an integer option value */ +int driQueryOptioni (const driOptionCache *cache, const char *name); +/** \brief Query a floating-point option value */ +float driQueryOptionf (const driOptionCache *cache, const char *name); +/** \brief Query a string option value */ +char *driQueryOptionstr (const driOptionCache *cache, const char *name); + +/** + * Returns a hash of the options for this application. + */ +static inline void +driComputeOptionsSha1(const driOptionCache *cache, unsigned char *sha1) +{ + void *ctx = ralloc_context(NULL); + char *dri_options = ralloc_strdup(ctx, ""); + + for (int i = 0; i < 1 << cache->tableSize; i++) { + if (cache->info[i].name == NULL) + continue; + + bool ret = false; + switch (cache->info[i].type) { + case DRI_BOOL: + ret = ralloc_asprintf_append(&dri_options, "%s:%u,", + cache->info[i].name, + cache->values[i]._bool); + break; + case DRI_INT: + case DRI_ENUM: + ret = ralloc_asprintf_append(&dri_options, "%s:%d,", + cache->info[i].name, + cache->values[i]._int); + break; + case DRI_FLOAT: + ret = ralloc_asprintf_append(&dri_options, "%s:%f,", + cache->info[i].name, + cache->values[i]._float); + break; + case DRI_STRING: + ret = ralloc_asprintf_append(&dri_options, "%s:%s,", + cache->info[i].name, + cache->values[i]._string); + break; + default: + unreachable("unsupported dri config type!"); + } + + if (!ret) { + break; + } + } + + _mesa_sha1_compute(dri_options, strlen(dri_options), sha1); + ralloc_free(ctx); +} + +#endif |