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mpv/core/m_struct.h
wm4 4873b32c59 Rename directories, move files (step 2 of 2)
Finish renaming directories and moving files. Adjust all include
statements to make the previous commit compile.

The two commits are separate, because git is bad at tracking renames
and content changes at the same time.

Also take this as an opportunity to remove the separation between
"common" and "mplayer" sources in the Makefile. ("common" used to be
shared between mplayer and mencoder.)
2012-11-12 20:08:18 +01:00

113 lines
3.3 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_M_STRUCT_H
#define MPLAYER_M_STRUCT_H
#include "core/bstr.h"
/// \defgroup OptionsStruct Options struct
/// \ingroup Options
/// An API to manipulate structs using m_option.
///@{
/// \file m_struct.h
struct m_option;
/// Struct definition
typedef struct m_struct_st {
/// For error messages and debugging
const char* name;
/// size of the whole struct
unsigned int size;
/// Pointer to a struct filled with the default settings
const void* defaults;
/// Field list.
/** The p field of the \ref m_option struct must contain the offset
* of the member in the struct (use M_ST_OFF macro for this).
*/
const struct m_option* fields;
} m_struct_t;
// From glib.h (modified ;-)
/// Get the offset of a struct field.
/** \param struct_type Struct type.
* \param member Name of the field.
* \return The offset of the field in bytes.
*/
#define M_ST_OFF(struct_type, member) \
((void*) &((struct_type*) 0)->member)
/// Get a pointer to a struct field.
/** \param struct_p Pointer to the struct.
* \param struct_offset Offset of the field in the struct.
* \return Pointer to the struct field.
*/
#define M_ST_MB_P(struct_p, struct_offset) \
((void *)((char *)(struct_p) + (unsigned long)(struct_offset)))
/// Access a struct field at a given offset.
/** \param member_type Type of the field.
* \param struct_p Pointer to the struct.
* \param struct_offset Offset of the field in the struct.
* \return The struct field at the given offset.
*/
#define M_ST_MB(member_type, struct_p, struct_offset) \
(*(member_type*) M_ST_MB_P ((struct_p), (struct_offset)))
/// Allocate the struct and set it to the defaults.
/** \param st Struct definition.
* \return The newly allocated object set to default.
*/
void*
m_struct_alloc(const m_struct_t* st);
/// Set a field of the struct.
/** \param st Struct definition.
* \param obj Pointer to the struct to set.
* \param field Name of the field to set.
* \param param New value of the field.
* \return 0 on error, 1 on success.
*/
int m_struct_set(const m_struct_t *st, void *obj, const char *field,
struct bstr param);
/// Free an allocated struct.
/** \param st Struct definition.
* \param obj Pointer to the struct to copy.
*/
void
m_struct_free(const m_struct_t* st, void* obj);
/// Get a field description.
/** \param st Struct definition.
* \param f Name of the field.
* \return The \ref m_option struct describing the field or NULL if not found.
*/
const struct m_option*
m_struct_get_field(const m_struct_t* st,const char* f);
///@}
#endif /* MPLAYER_M_STRUCT_H */