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/*
* vo_hook.c: Intercept video driver
*
* See the main source file 'xineliboutput.c' for copyright information and
* how to reach the author.
*
* $Id: vo_hook.c,v 1.5 2009-05-09 16:05:06 phintuka Exp $
*
*/
#include <stdlib.h>
#include <xine/video_out.h>
#define LOG_MODULENAME "[xine-vo ] "
#include "../logdefs.h"
#include "vo_hook.h"
#include "vo_post.h"
/* This module supports only video driver interface version 21 */
#if (VIDEO_OUT_DRIVER_IFACE_VERSION < 21)
# error xine-lib VIDEO_OUT_DRIVER_IFACE_VERSION < 21
#endif
/*
* default handlers
*
* - Forward function call to original driver
*/
#define DEF_HANDLER3(RET, NAME, ARG1, ARG2, ARG3) \
RET vo_def_##NAME (vo_driver_t *self, ARG1 a1, ARG2 a2, ARG3 a3) { \
vo_driver_hook_t *this = (vo_driver_hook_t *) self; \
return this->orig_driver-> NAME (this->orig_driver, a1, a2, a3); \
}
#define DEF_HANDLER2(RET, NAME, ARG1, ARG2) \
RET vo_def_##NAME (vo_driver_t *self, ARG1 a1, ARG2 a2) { \
vo_driver_hook_t *this = (vo_driver_hook_t *) self; \
return this->orig_driver-> NAME (this->orig_driver, a1, a2); \
}
#define DEF_HANDLER1(RET, NAME, ARG1) \
RET vo_def_##NAME (vo_driver_t *self, ARG1 a1) { \
vo_driver_hook_t *this = (vo_driver_hook_t *) self; \
return this->orig_driver-> NAME (this->orig_driver, a1); \
}
#define DEF_HANDLER0(RET, NAME) \
RET vo_def_##NAME (vo_driver_t *self) { \
vo_driver_hook_t *this = (vo_driver_hook_t *) self; \
return this->orig_driver-> NAME (this->orig_driver); \
}
/*
*
*/
DEF_HANDLER0(uint32_t, get_capabilities);
DEF_HANDLER0(vo_frame_t*, alloc_frame);
void vo_def_update_frame_format (vo_driver_t *self, vo_frame_t *img,
uint32_t width, uint32_t height,
double ratio, int format, int flags)
{
vo_driver_hook_t *this = (vo_driver_hook_t *) self;
return this->orig_driver-> update_frame_format (this->orig_driver, img, width, height, ratio, format, flags);
}
DEF_HANDLER1(void, display_frame, vo_frame_t * );
DEF_HANDLER2(void, overlay_begin, vo_frame_t *, int );
DEF_HANDLER2(void, overlay_blend, vo_frame_t *, vo_overlay_t * );
DEF_HANDLER1(void, overlay_end, vo_frame_t *);
DEF_HANDLER1(int, get_property, int);
DEF_HANDLER2(int, set_property, int, int);
DEF_HANDLER3(void, get_property_min_max, int, int*, int*);
DEF_HANDLER2(int, gui_data_exchange, int, void * );
DEF_HANDLER0(int, redraw_needed );
void vo_def_dispose(vo_driver_t *self)
{
vo_driver_hook_t *this = (vo_driver_hook_t *) self;
if (this->orig_driver)
this->orig_driver->dispose(this->orig_driver);
free(self);
}
/*
* vo_def_hooks_init()
*
* initialize driver_hook_t with default handlers
*
*/
static void vo_proxy_hooks_init(vo_driver_t *drv, vo_driver_t *next_driver)
{
drv->get_capabilities = drv->get_capabilities ?: vo_def_get_capabilities;
drv->alloc_frame = drv->alloc_frame ?: vo_def_alloc_frame;
drv->update_frame_format = drv->update_frame_format ?: vo_def_update_frame_format;
drv->display_frame = drv->display_frame ?: vo_def_display_frame;
drv->get_property = drv->get_property ?: vo_def_get_property;
drv->set_property = drv->set_property ?: vo_def_set_property;
drv->get_property_min_max = drv->get_property_min_max ?: vo_def_get_property_min_max;
drv->gui_data_exchange = drv->gui_data_exchange ?: vo_def_gui_data_exchange;
drv->redraw_needed = drv->redraw_needed ?: vo_def_redraw_needed;
drv->dispose = drv->dispose ?: vo_def_dispose;
/* drop old default handlers for OSD (OSD handlers are optional) */
if (drv->overlay_begin == vo_def_overlay_begin)
drv->overlay_begin = NULL;
if (drv->overlay_blend == vo_def_overlay_blend)
drv->overlay_blend = NULL;
if (drv->overlay_end == vo_def_overlay_end)
drv->overlay_end = NULL;
/* Set proxy handlers for OSD only if next driver has OSD handlers */
if (!drv->overlay_begin && next_driver->overlay_begin)
drv->overlay_begin = vo_def_overlay_begin;
if (!drv->overlay_blend && next_driver->overlay_blend)
drv->overlay_blend = vo_def_overlay_blend;
if (!drv->overlay_end && next_driver->overlay_end)
drv->overlay_end = vo_def_overlay_end;
drv->node = next_driver->node; /* ??? used only by plugin_loader ? */
}
/*
*
*/
/* from xine-lib video_out.c */
typedef struct {
xine_video_port_t vo; /* public part */
vo_driver_t *driver;
/* ... */
} vos_t;
/*
* wire_video_driver()
*
*/
int wire_video_driver(xine_video_port_t *video_port, vo_driver_t *hook)
{
vo_driver_t *vos_driver = ((vos_t*)video_port)->driver;
if (video_port->driver != vos_driver) {
LOGMSG("wire_video_driver() FAILED (vo_driver != vos_driver)");
return 0;
}
/*LOGMSG("wire_video_driver: vo_driver == vos_driver");*/
/* wire */
/* set proxy handlers for undefined methods */
vo_proxy_hooks_init(hook, video_port->driver);
/* append original driver chain to new driver */
((vo_driver_hook_t *)hook)->orig_driver = video_port->driver;
/* push new driver to start of driver chain */
video_port->driver = hook;
((vos_t*)video_port)->driver = hook;
return 1;
}
/*
* unwire_video_driver()
*
*/
int unwire_video_driver(xine_video_port_t *video_port, vo_driver_t *hook_gen, vo_driver_t *video_out)
{
vo_driver_hook_t *hook = (vo_driver_hook_t*)hook_gen;
vo_driver_hook_t *next = (vo_driver_hook_t*)video_port->driver;
if (next == hook) {
/* special handling for first entry */
video_port->driver = next->orig_driver;
/* need to patch video_port private driver pointer too ... */
((vos_t*)video_port)->driver = next->orig_driver;
next->orig_driver = NULL;
return 1;
}
vo_driver_hook_t *prev = next;
while (next && next != hook && (vo_driver_t*)next != video_out) {
prev = next;
next = (vo_driver_hook_t*)next->orig_driver;
}
if (prev && next == hook) {
prev->orig_driver = next->orig_driver;
next->orig_driver = NULL;
return 1;
}
return 0;
}
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