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mpv/video/out/vo_caca.c

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/*
* video output driver for libcaca
*
* by Pigeon <pigeon@pigeond.net>
*
* Some functions/codes/ideas are from x11 and aalib vo
*
* TODO: support draw_alpha?
*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <assert.h>
#include <caca.h>
#include "config.h"
#include "vo.h"
#include "video/mp_image.h"
#include "input/keycodes.h"
#include "input/input.h"
#include "common/msg.h"
#include "input/input.h"
#include "config.h"
#if !HAVE_GPL
#error GPL only
#endif
struct priv {
caca_canvas_t *canvas;
caca_display_t *display;
caca_dither_t *dither;
uint8_t *dither_buffer;
const char *dither_antialias;
const char *dither_charset;
const char *dither_color;
const char *dither_algo;
/* image infos */
int image_format;
int image_width;
int image_height;
int screen_w, screen_h;
};
/* We want 24bpp always for now */
static const unsigned int bpp = 24;
static const unsigned int depth = 3;
static const unsigned int rmask = 0xff0000;
static const unsigned int gmask = 0x00ff00;
static const unsigned int bmask = 0x0000ff;
static const unsigned int amask = 0;
static int resize(struct vo *vo)
{
struct priv *priv = vo->priv;
priv->screen_w = caca_get_canvas_width(priv->canvas);
priv->screen_h = caca_get_canvas_height(priv->canvas);
caca_free_dither(priv->dither);
talloc_free(priv->dither_buffer);
priv->dither = caca_create_dither(bpp, priv->image_width, priv->image_height,
depth * priv->image_width,
rmask, gmask, bmask, amask);
if (priv->dither == NULL) {
MP_FATAL(vo, "caca_create_dither failed!\n");
return -1;
}
priv->dither_buffer =
talloc_array(NULL, uint8_t, depth * priv->image_width * priv->image_height);
/* Default libcaca features */
caca_set_dither_antialias(priv->dither, priv->dither_antialias);
caca_set_dither_charset(priv->dither, priv->dither_charset);
caca_set_dither_color(priv->dither, priv->dither_color);
caca_set_dither_algorithm(priv->dither, priv->dither_algo);
return 0;
}
static int reconfig(struct vo *vo, struct mp_image_params *params)
{
struct priv *priv = vo->priv;
priv->image_height = params->h;
priv->image_width = params->w;
priv->image_format = params->imgfmt;
return resize(vo);
}
static void draw_image(struct vo *vo, mp_image_t *mpi)
{
struct priv *priv = vo->priv;
memcpy_pic(priv->dither_buffer, mpi->planes[0], priv->image_width * depth, priv->image_height,
priv->image_width * depth, mpi->stride[0]);
caca_dither_bitmap(priv->canvas, 0, 0, priv->screen_w, priv->screen_h, priv->dither, priv->dither_buffer);
talloc_free(mpi);
}
static void flip_page(struct vo *vo)
{
struct priv *priv = vo->priv;
caca_refresh_display(priv->display);
}
static void set_next_str(const char * const *list, const char **str,
const char **msg)
{
int ind;
for (ind = 0; list[ind]; ind += 2) {
if (strcmp(list[ind], *str) == 0) {
if (list[ind + 2] == NULL)
ind = -2;
*str = list[ind + 2];
*msg = list[ind + 3];
return;
}
}
*str = list[0];
*msg = list[1];
}
static const struct mp_keymap keysym_map[] = {
{CACA_KEY_RETURN, MP_KEY_ENTER}, {CACA_KEY_ESCAPE, MP_KEY_ESC},
{CACA_KEY_UP, MP_KEY_UP}, {CACA_KEY_DOWN, MP_KEY_DOWN},
{CACA_KEY_LEFT, MP_KEY_LEFT}, {CACA_KEY_RIGHT, MP_KEY_RIGHT},
{CACA_KEY_PAGEUP, MP_KEY_PAGE_UP}, {CACA_KEY_PAGEDOWN, MP_KEY_PAGE_DOWN},
{CACA_KEY_HOME, MP_KEY_HOME}, {CACA_KEY_END, MP_KEY_END},
{CACA_KEY_INSERT, MP_KEY_INSERT}, {CACA_KEY_DELETE, MP_KEY_DELETE},
{CACA_KEY_BACKSPACE, MP_KEY_BACKSPACE}, {CACA_KEY_TAB, MP_KEY_TAB},
{CACA_KEY_PAUSE, MP_KEY_PAUSE},
{CACA_KEY_F1, MP_KEY_F+1}, {CACA_KEY_F2, MP_KEY_F+2},
{CACA_KEY_F3, MP_KEY_F+3}, {CACA_KEY_F4, MP_KEY_F+4},
{CACA_KEY_F5, MP_KEY_F+5}, {CACA_KEY_F6, MP_KEY_F+6},
{CACA_KEY_F7, MP_KEY_F+7}, {CACA_KEY_F8, MP_KEY_F+8},
{CACA_KEY_F9, MP_KEY_F+9}, {CACA_KEY_F10, MP_KEY_F+10},
{CACA_KEY_F11, MP_KEY_F+11}, {CACA_KEY_F12, MP_KEY_F+12},
{CACA_KEY_F13, MP_KEY_F+13}, {CACA_KEY_F14, MP_KEY_F+14},
{CACA_KEY_F15, MP_KEY_F+15},
{0, 0}
};
static void check_events(struct vo *vo)
{
struct priv *priv = vo->priv;
caca_event_t cev;
while (caca_get_event(priv->display, CACA_EVENT_ANY, &cev, 0)) {
switch (cev.type) {
case CACA_EVENT_RESIZE:
caca_refresh_display(priv->display);
resize(vo);
break;
case CACA_EVENT_QUIT:
mp_input_put_key(vo->input_ctx, MP_KEY_CLOSE_WIN);
break;
case CACA_EVENT_MOUSE_MOTION:
mp_input_set_mouse_pos(vo->input_ctx, cev.data.mouse.x, cev.data.mouse.y);
break;
case CACA_EVENT_MOUSE_PRESS:
mp_input_put_key(vo->input_ctx,
(MP_MBTN_BASE + cev.data.mouse.button - 1) | MP_KEY_STATE_DOWN);
break;
case CACA_EVENT_MOUSE_RELEASE:
mp_input_put_key(vo->input_ctx,
(MP_MBTN_BASE + cev.data.mouse.button - 1) | MP_KEY_STATE_UP);
break;
case CACA_EVENT_KEY_PRESS:
{
int key = cev.data.key.ch;
int mpkey = lookup_keymap_table(keysym_map, key);
const char *msg_name;
if (mpkey)
mp_input_put_key(vo->input_ctx, mpkey);
else
switch (key) {
case 'd':
case 'D':
/* Toggle dithering algorithm */
set_next_str(caca_get_dither_algorithm_list(priv->dither),
&priv->dither_algo, &msg_name);
caca_set_dither_algorithm(priv->dither, priv->dither_algo);
break;
case 'a':
case 'A':
/* Toggle antialiasing method */
set_next_str(caca_get_dither_antialias_list(priv->dither),
&priv->dither_antialias, &msg_name);
caca_set_dither_antialias(priv->dither, priv->dither_antialias);
break;
case 'h':
case 'H':
/* Toggle charset method */
set_next_str(caca_get_dither_charset_list(priv->dither),
&priv->dither_charset, &msg_name);
caca_set_dither_charset(priv->dither, priv->dither_charset);
break;
case 'c':
case 'C':
/* Toggle color method */
set_next_str(caca_get_dither_color_list(priv->dither),
&priv->dither_color, &msg_name);
caca_set_dither_color(priv->dither, priv->dither_color);
break;
default:
if (key <= 255)
mp_input_put_key(vo->input_ctx, key);
break;
}
}
}
}
}
static void uninit(struct vo *vo)
{
struct priv *priv = vo->priv;
caca_free_dither(priv->dither);
priv->dither = NULL;
talloc_free(priv->dither_buffer);
priv->dither_buffer = NULL;
caca_free_display(priv->display);
caca_free_canvas(priv->canvas);
}
static int preinit(struct vo *vo)
{
struct priv *priv = vo->priv;
priv->dither_antialias = "default";
priv->dither_charset = "default";
priv->dither_color = "default";
priv->dither_algo = "none";
priv->canvas = caca_create_canvas(0, 0);
if (priv->canvas == NULL) {
MP_ERR(vo, "failed to create canvas\n");
return ENOSYS;
}
priv->display = caca_create_display(priv->canvas);
if (priv->display == NULL) {
MP_ERR(vo, "failed to create display\n");
caca_free_canvas(priv->canvas);
return ENOSYS;
}
return 0;
}
static int query_format(struct vo *vo, int format)
{
return format == IMGFMT_BGR24;
}
static int control(struct vo *vo, uint32_t request, void *data)
{
struct priv *priv = vo->priv;
switch (request) {
case VOCTRL_CHECK_EVENTS:
check_events(vo);
return VO_TRUE;
case VOCTRL_UPDATE_WINDOW_TITLE:
caca_set_display_title(priv->display, (char *)data);
return VO_TRUE;
}
return VO_NOTIMPL;
}
const struct vo_driver video_out_caca = {
.name = "caca",
.description = "libcaca",
.preinit = preinit,
.query_format = query_format,
.reconfig = reconfig,
.control = control,
.draw_image = draw_image,
.flip_page = flip_page,
.uninit = uninit,
.priv_size = sizeof(struct priv),
};
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