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/**
* @file selfview.c Selfview Video-Filter
*
* Copyright (C) 2010 Creytiv.com
*/
#include <string.h>
#include <re.h>
#include <rem.h>
#include <baresip.h>
/* shared state */
struct selfview {
struct lock *lock; /**< Protect frame */
struct vidframe *frame; /**< Copy of encoded frame */
};
struct selfview_enc {
struct vidfilt_enc_st vf; /**< Inheritance */
struct selfview *selfview; /**< Ref. to shared state */
struct vidisp_st *disp; /**< Selfview display */
};
struct selfview_dec {
struct vidfilt_dec_st vf; /**< Inheritance */
struct selfview *selfview; /**< Ref. to shared state */
};
static struct vidsz selfview_size = {0, 0};
static void destructor(void *arg)
{
struct selfview *st = arg;
lock_write_get(st->lock);
mem_deref(st->frame);
lock_rel(st->lock);
mem_deref(st->lock);
}
static void encode_destructor(void *arg)
{
struct selfview_enc *st = arg;
list_unlink(&st->vf.le);
mem_deref(st->selfview);
mem_deref(st->disp);
}
static void decode_destructor(void *arg)
{
struct selfview_dec *st = arg;
list_unlink(&st->vf.le);
mem_deref(st->selfview);
}
static int selfview_alloc(struct selfview **selfviewp, void **ctx)
{
struct selfview *selfview;
int err;
if (!selfviewp || !ctx)
return EINVAL;
if (*ctx) {
*selfviewp = mem_ref(*ctx);
}
else {
selfview = mem_zalloc(sizeof(*selfview), destructor);
if (!selfview)
return ENOMEM;
err = lock_alloc(&selfview->lock);
if (err)
return err;
*ctx = selfview;
*selfviewp = selfview;
}
return 0;
}
static int encode_update(struct vidfilt_enc_st **stp, void **ctx,
const struct vidfilt *vf)
{
struct selfview_enc *st;
int err;
if (!stp || !ctx || !vf)
return EINVAL;
if (*stp)
return 0;
st = mem_zalloc(sizeof(*st), encode_destructor);
if (!st)
return ENOMEM;
err = selfview_alloc(&st->selfview, ctx);
if (err)
mem_deref(st);
else
*stp = (struct vidfilt_enc_st *)st;
return err;
}
static int decode_update(struct vidfilt_dec_st **stp, void **ctx,
const struct vidfilt *vf)
{
struct selfview_dec *st;
int err;
if (!stp || !ctx || !vf)
return EINVAL;
st = mem_zalloc(sizeof(*st), decode_destructor);
if (!st)
return ENOMEM;
err = selfview_alloc(&st->selfview, ctx);
if (err)
mem_deref(st);
else
*stp = (struct vidfilt_dec_st *)st;
return err;
}
static int encode_win(struct vidfilt_enc_st *st, struct vidframe *frame)
{
struct selfview_enc *enc = (struct selfview_enc *)st;
int err;
if (!frame)
return 0;
if (!enc->disp) {
err = vidisp_alloc(&enc->disp, NULL, NULL, NULL, NULL, NULL);
if (err)
return err;
}
return vidisp_display(enc->disp, "Selfview", frame);
}
static int encode_pip(struct vidfilt_enc_st *st, struct vidframe *frame)
{
struct selfview_enc *enc = (struct selfview_enc *)st;
struct selfview *selfview = enc->selfview;
int err = 0;
if (!frame)
return 0;
lock_write_get(selfview->lock);
if (!selfview->frame) {
struct vidsz sz;
/* Use size if configured, or else 20% of main window */
if (selfview_size.w && selfview_size.h) {
sz = selfview_size;
}
else {
sz.w = frame->size.w / 5;
sz.h = frame->size.h / 5;
}
err = vidframe_alloc(&selfview->frame, VID_FMT_YUV420P, &sz);
}
if (!err)
vidconv(selfview->frame, frame, NULL);
lock_rel(selfview->lock);
return err;
}
static int decode_pip(struct vidfilt_dec_st *st, struct vidframe *frame)
{
struct selfview_dec *dec = (struct selfview_dec *)st;
struct selfview *sv = dec->selfview;
if (!frame)
return 0;
lock_read_get(sv->lock);
if (sv->frame) {
struct vidrect rect;
rect.w = min(sv->frame->size.w, frame->size.w/2);
rect.h = min(sv->frame->size.h, frame->size.h/2);
if (rect.w <= (frame->size.w - 10))
rect.x = frame->size.w - rect.w - 10;
else
rect.x = frame->size.w/2;
if (rect.h <= (frame->size.h - 10))
rect.y = frame->size.h - rect.h - 10;
else
rect.y = frame->size.h/2;
vidconv(frame, sv->frame, &rect);
vidframe_draw_rect(frame, rect.x, rect.y, rect.w, rect.h,
127, 127, 127);
}
lock_rel(sv->lock);
return 0;
}
static struct vidfilt selfview_win = {
LE_INIT, "selfview_window", encode_update, encode_win, NULL, NULL
};
static struct vidfilt selfview_pip = {
LE_INIT, "selfview_pip",
encode_update, encode_pip, decode_update, decode_pip
};
static int module_init(void)
{
struct pl pl;
if (conf_get(conf_cur(), "video_selfview", &pl))
return 0;
if (0 == pl_strcasecmp(&pl, "window"))
vidfilt_register(&selfview_win);
else if (0 == pl_strcasecmp(&pl, "pip"))
vidfilt_register(&selfview_pip);
(void)conf_get_vidsz(conf_cur(), "selfview_size", &selfview_size);
return 0;
}
static int module_close(void)
{
vidfilt_unregister(&selfview_win);
vidfilt_unregister(&selfview_pip);
return 0;
}
EXPORT_SYM const struct mod_export DECL_EXPORTS(selfview) = {
"selfview",
"vidfilt",
module_init,
module_close
};
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