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author | wm4 <wm4@nowhere> | 2014-02-15 16:41:48 +0100 |
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committer | wm4 <wm4@nowhere> | 2014-02-16 03:51:02 +0100 |
commit | 309ae76e0b159d4000e24f04aabef8e29f41e86a (patch) | |
tree | b1c6ee2311c0366e7238abe4c7823eeea97ef735 /options/m_property.h | |
parent | ccfbe434558075c5d5dd9353a8c9dcc1b9954547 (diff) | |
download | mpv-309ae76e0b159d4000e24f04aabef8e29f41e86a.tar.bz2 mpv-309ae76e0b159d4000e24f04aabef8e29f41e86a.tar.xz |
m_property: add a sub-property mechanism
This adds a mechanism for easier export of sub-properties. The following
commits will make use of it to export fine grained information about
certain things. The sub-property mechanism reduces the amount of code
needed to export a data value to 1 line.
Diffstat (limited to 'options/m_property.h')
-rw-r--r-- | options/m_property.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/options/m_property.h b/options/m_property.h index ae4b7716b6..cb9f8b5a25 100644 --- a/options/m_property.h +++ b/options/m_property.h @@ -22,7 +22,8 @@ #include <stdbool.h> #include <stdint.h> -struct m_option; +#include "m_option.h" + struct mp_log; extern const struct m_option_type m_option_type_dummy; @@ -141,4 +142,29 @@ int m_property_double_ro(const struct m_option* prop, int action, void* arg, int m_property_strdup_ro(const struct m_option* prop, int action, void* arg, const char *var); +struct m_sub_property { + // Name of the sub-property - this will be prefixed with the parent + // property's name. + const char *name; + // Type of the data stored in the value member. See m_option. + const struct m_option_type *type; + // Data returned by the sub-property. m_property_read_sub() will make a + // copy of this if needed. It will never write or free the data. + union m_option_value value; + // This can be set to true if the property should be hidden. + bool unavailable; +}; + +// Convenience macros which can be used as part of a sub_property entry. +#define SUB_PROP_INT(i) \ + .type = CONF_TYPE_INT, .value = {.int_ = (i)} +#define SUB_PROP_STR(s) \ + .type = CONF_TYPE_STRING, .value = {.string = (char *)(s)} +#define SUB_PROP_FLOAT(f) \ + .type = CONF_TYPE_FLOAT, .value = {.float_ = (f)} +#define SUB_PROP_FLAG(f) \ + .type = CONF_TYPE_FLAG, .value = {.flag = (f)} + +int m_property_read_sub(const struct m_sub_property *props, int action, void *arg); + #endif /* MPLAYER_M_PROPERTY_H */ |