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mpv/libvo/video_out.c

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/*
* libvo common functions, variables used by many/all drivers.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdbool.h>
#include <unistd.h>
//#include <sys/mman.h>
#include "config.h"
#include "options.h"
#include "talloc.h"
#include "bstr.h"
#include "video_out.h"
#include "aspect.h"
#include "geometry.h"
#include "input/input.h"
#include "mp_fifo.h"
#include "m_config.h"
#include "mp_msg.h"
#include "osdep/shmem.h"
#ifdef CONFIG_X11
#include "x11_common.h"
#endif
int xinerama_screen = -1;
int xinerama_x;
int xinerama_y;
int vo_nomouse_input = 0;
int vo_grabpointer = 1;
int vo_doublebuffering = 1;
int vo_vsync = 1;
int vo_fs = 0;
int vo_fsmode = 0;
float vo_panscan = 0.0f;
int vo_refresh_rate=0;
int vo_keepaspect=1;
int vo_rootwin=0;
int vo_border=1;
int64_t WinID = -1;
int vo_pts=0; // for hw decoding
float vo_fps=0;
int vo_colorkey = 0x0000ff00; // default colorkey is green
// (0xff000000 means that colorkey has been disabled)
//
// Externally visible list of all vo drivers
//
extern struct vo_driver video_out_x11;
extern struct vo_driver video_out_vdpau;
extern struct vo_driver video_out_xv;
extern struct vo_driver video_out_opengl;
extern struct vo_driver video_out_opengl_hq;
extern struct vo_driver video_out_opengl_old;
extern struct vo_driver video_out_null;
extern struct vo_driver video_out_image;
extern struct vo_driver video_out_lavc;
extern struct vo_driver video_out_caca;
extern struct vo_driver video_out_direct3d;
extern struct vo_driver video_out_direct3d_shaders;
extern struct vo_driver video_out_corevideo;
const struct vo_driver *video_out_drivers[] =
{
#ifdef CONFIG_DIRECT3D
&video_out_direct3d_shaders,
&video_out_direct3d,
#endif
#ifdef CONFIG_GL_COCOA
&video_out_opengl,
&video_out_opengl_old,
#endif
#ifdef CONFIG_COREVIDEO
&video_out_corevideo,
#endif
#if CONFIG_VDPAU
&video_out_vdpau,
#endif
#ifdef CONFIG_XV
&video_out_xv,
#endif
#ifdef CONFIG_GL
#if !defined CONFIG_GL_COCOA
&video_out_opengl,
&video_out_opengl_old,
#endif
#endif
#ifdef CONFIG_X11
&video_out_x11,
#endif
#ifdef CONFIG_CACA
&video_out_caca,
#endif
&video_out_null,
// should not be auto-selected
&video_out_image,
#ifdef CONFIG_ENCODING
&video_out_lavc,
#endif
#ifdef CONFIG_GL
&video_out_opengl_hq,
#endif
NULL
};
static int vo_preinit(struct vo *vo, char *arg)
{
if (vo->driver->priv_size) {
vo->priv = talloc_zero_size(vo, vo->driver->priv_size);
if (vo->driver->priv_defaults)
memcpy(vo->priv, vo->driver->priv_defaults, vo->driver->priv_size);
}
if (vo->driver->options) {
struct m_config *cfg = m_config_simple(vo->priv);
talloc_steal(vo->priv, cfg);
m_config_register_options(cfg, vo->driver->options);
char n[50];
int l = snprintf(n, sizeof(n), "vo/%s", vo->driver->info->short_name);
assert(l < sizeof(n));
int r = m_config_parse_suboptions(cfg, n, arg);
if (r < 0)
return r;
}
return vo->driver->preinit(vo, arg);
}
int vo_control(struct vo *vo, uint32_t request, void *data)
{
return vo->driver->control(vo, request, data);
}
// Return -1 if driver appears not to support a draw_image interface,
// 0 otherwise (whether the driver actually drew something or not).
int vo_draw_image(struct vo *vo, struct mp_image *mpi, double pts)
{
if (!vo->config_ok)
return 0;
if (vo->driver->buffer_frames) {
vo->driver->draw_image(vo, mpi, pts);
return 0;
}
vo->frame_loaded = true;
vo->next_pts = pts;
// Guaranteed to support at least DRAW_IMAGE later
if (vo->driver->is_new) {
vo->waiting_mpi = mpi;
return 0;
}
if (vo_control(vo, VOCTRL_DRAW_IMAGE, mpi) == VO_NOTIMPL)
return -1;
return 0;
}
int vo_redraw_frame(struct vo *vo)
{
if (!vo->config_ok || !vo->hasframe)
return -1;
if (vo_control(vo, VOCTRL_REDRAW_FRAME, NULL) == true) {
vo->redrawing = true;
return 0;
}
return -1;
}
int vo_get_buffered_frame(struct vo *vo, bool eof)
{
if (!vo->config_ok)
return -1;
if (vo->frame_loaded)
return 0;
if (!vo->driver->buffer_frames)
return -1;
vo->driver->get_buffered_frame(vo, eof);
return vo->frame_loaded ? 0 : -1;
}
void vo_skip_frame(struct vo *vo)
{
vo_control(vo, VOCTRL_SKIPFRAME, NULL);
vo->frame_loaded = false;
}
int vo_draw_slice(struct vo *vo, uint8_t *src[], int stride[], int w, int h, int x, int y)
{
return vo->driver->draw_slice(vo, src, stride, w, h, x, y);
}
void vo_new_frame_imminent(struct vo *vo)
{
if (!vo->driver->is_new)
return;
if (vo->driver->buffer_frames)
vo_control(vo, VOCTRL_NEWFRAME, NULL);
else {
vo_control(vo, VOCTRL_DRAW_IMAGE, vo->waiting_mpi);
vo->waiting_mpi = NULL;
}
}
void vo_draw_osd(struct vo *vo, struct osd_state *osd)
{
if (!vo->config_ok)
return;
vo->driver->draw_osd(vo, osd);
}
void vo_flip_page(struct vo *vo, unsigned int pts_us, int duration)
{
if (!vo->config_ok)
return;
if (!vo->redrawing) {
vo->frame_loaded = false;
vo->next_pts = MP_NOPTS_VALUE;
}
vo->want_redraw = false;
vo->redrawing = false;
if (vo->driver->flip_page_timed)
vo->driver->flip_page_timed(vo, pts_us, duration);
else
vo->driver->flip_page(vo);
vo->hasframe = true;
}
void vo_check_events(struct vo *vo)
{
if (!vo->config_ok) {
if (vo->registered_fd != -1)
mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
vo->registered_fd = -1;
return;
}
vo->driver->check_events(vo);
}
void vo_seek_reset(struct vo *vo)
{
vo_control(vo, VOCTRL_RESET, NULL);
vo->frame_loaded = false;
vo->hasframe = false;
}
void vo_destroy(struct vo *vo)
{
if (vo->registered_fd != -1)
mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
vo->driver->uninit(vo);
talloc_free(vo);
}
void list_video_out(void)
{
int i = 0;
mp_tmsg(MSGT_CPLAYER, MSGL_INFO, "Available video output drivers:\n");
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_OUTPUTS\n");
while (video_out_drivers[i]) {
const vo_info_t *info = video_out_drivers[i++]->info;
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\t%s\t%s\n", info->short_name, info->name);
}
mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
}
static void replace_legacy_vo_name(bstr *name)
{
bstr new = *name;
if (bstr_equals0(*name, "gl"))
new = bstr0("opengl");
if (bstr_equals0(*name, "gl3"))
new = bstr0("opengl-hq");
if (!bstr_equals(*name, new)) {
mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "VO driver '%.*s' has been replaced "
"with '%.*s'!\n", BSTR_P(*name), BSTR_P(new));
}
*name = new;
}
struct vo *init_best_video_out(struct MPOpts *opts,
struct mp_fifo *key_fifo,
struct input_ctx *input_ctx,
struct encode_lavc_context *encode_lavc_ctx)
{
char **vo_list = opts->video_driver_list;
int i;
struct vo *vo = talloc_ptrtype(NULL, vo);
struct vo initial_values = {
.opts = opts,
.key_fifo = key_fifo,
.encode_lavc_ctx = encode_lavc_ctx,
.input_ctx = input_ctx,
.event_fd = -1,
.registered_fd = -1,
};
// first try the preferred drivers, with their optional subdevice param:
if (vo_list && vo_list[0])
while (vo_list[0][0]) {
char *arg = vo_list[0];
bstr name = bstr0(arg);
char *params = strchr(arg, ':');
if (params) {
name = bstr_splice(name, 0, params - arg);
params++;
}
replace_legacy_vo_name(&name);
for (i = 0; video_out_drivers[i]; i++) {
const struct vo_driver *video_driver = video_out_drivers[i];
const vo_info_t *info = video_driver->info;
if (bstr_equals0(name, info->short_name)) {
// name matches, try it
*vo = initial_values;
vo->driver = video_driver;
if (!vo_preinit(vo, params))
return vo; // success!
talloc_free_children(vo);
}
}
// continue...
++vo_list;
if (!(vo_list[0])) {
talloc_free(vo);
return NULL; // do NOT fallback to others
}
}
// now try the rest...
for (i = 0; video_out_drivers[i]; i++) {
const struct vo_driver *video_driver = video_out_drivers[i];
*vo = initial_values;
vo->driver = video_driver;
if (!vo_preinit(vo, NULL))
return vo; // success!
talloc_free_children(vo);
}
talloc_free(vo);
return NULL;
}
static int event_fd_callback(void *ctx, int fd)
{
struct vo *vo = ctx;
vo_check_events(vo);
return MP_INPUT_NOTHING;
}
int vo_config(struct vo *vo, uint32_t width, uint32_t height,
uint32_t d_width, uint32_t d_height, uint32_t flags,
uint32_t format)
{
struct MPOpts *opts = vo->opts;
panscan_init(vo);
aspect_save_orig(vo, width, height);
aspect_save_prescale(vo, d_width, d_height);
if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
aspect(vo, &d_width, &d_height, A_NOZOOM);
vo->dx = (int)(opts->vo_screenwidth - d_width) / 2;
vo->dy = (int)(opts->vo_screenheight - d_height) / 2;
geometry(&vo->dx, &vo->dy, &d_width, &d_height,
opts->vo_screenwidth, opts->vo_screenheight);
geometry_xy_changed |= xinerama_screen >= 0;
vo->dx += xinerama_x;
vo->dy += xinerama_y;
vo->dwidth = d_width;
vo->dheight = d_height;
}
int ret = vo->driver->config(vo, width, height, d_width, d_height, flags,
format);
vo->config_ok = (ret == 0);
vo->config_count += vo->config_ok;
if (vo->registered_fd == -1 && vo->event_fd != -1 && vo->config_ok) {
mp_input_add_key_fd(vo->input_ctx, vo->event_fd, 1, event_fd_callback,
NULL, vo);
vo->registered_fd = vo->event_fd;
}
vo->frame_loaded = false;
vo->waiting_mpi = NULL;
vo->redrawing = false;
vo->hasframe = false;
return ret;
}
/**
* \brief lookup an integer in a table, table must have 0 as the last key
* \param key key to search for
* \result translation corresponding to key or "to" value of last mapping
* if not found.
*/
int lookup_keymap_table(const struct mp_keymap *map, int key) {
while (map->from && map->from != key) map++;
return map->to;
}
/**
* \brief helper function for the kind of panscan-scaling that needs a source
* and destination rectangle like Direct3D and VDPAU
*/
static void src_dst_split_scaling(int src_size, int dst_size, int scaled_src_size,
int *src_start, int *src_end, int *dst_start, int *dst_end) {
if (scaled_src_size > dst_size) {
int border = src_size * (scaled_src_size - dst_size) / scaled_src_size;
// round to a multiple of 2, this is at least needed for vo_direct3d and ATI cards
border = (border / 2 + 1) & ~1;
*src_start = border;
*src_end = src_size - border;
*dst_start = 0;
*dst_end = dst_size;
} else {
*src_start = 0;
*src_end = src_size;
*dst_start = (dst_size - scaled_src_size) / 2;
*dst_end = *dst_start + scaled_src_size;
}
}
/**
* Calculate the appropriate source and destination rectangle to
* get a correctly scaled picture, including pan-scan.
* Can be extended to take future cropping support into account.
*
* \param crop specifies the cropping border size in the left, right, top and bottom members, may be NULL
* \param borders the border values as e.g. EOSD (ASS) and properly placed DVD highlight support requires,
* may be NULL and only left and top are currently valid.
*/
void calc_src_dst_rects(struct vo *vo, int src_width, int src_height,
struct vo_rect *src, struct vo_rect *dst,
struct vo_rect *borders, const struct vo_rect *crop)
{
static const struct vo_rect no_crop = {0, 0, 0, 0, 0, 0};
int scaled_width = 0;
int scaled_height = 0;
if (!crop) crop = &no_crop;
src_width -= crop->left + crop->right;
src_height -= crop->top + crop->bottom;
if (src_width < 2) src_width = 2;
if (src_height < 2) src_height = 2;
dst->left = 0; dst->right = vo->dwidth;
dst->top = 0; dst->bottom = vo->dheight;
src->left = 0; src->right = src_width;
src->top = 0; src->bottom = src_height;
if (borders) {
borders->left = 0; borders->top = 0;
}
if (aspect_scaling()) {
aspect(vo, &scaled_width, &scaled_height, A_WINZOOM);
panscan_calc_windowed(vo);
scaled_width += vo->panscan_x;
scaled_height += vo->panscan_y;
if (borders) {
borders->left = (vo->dwidth - scaled_width ) / 2;
borders->top = (vo->dheight - scaled_height) / 2;
}
src_dst_split_scaling(src_width, vo->dwidth, scaled_width,
&src->left, &src->right, &dst->left, &dst->right);
src_dst_split_scaling(src_height, vo->dheight, scaled_height,
&src->top, &src->bottom, &dst->top, &dst->bottom);
}
src->left += crop->left; src->right += crop->left;
src->top += crop->top; src->bottom += crop->top;
src->width = src->right - src->left;
src->height = src->bottom - src->top;
dst->width = dst->right - dst->left;
dst->height = dst->bottom - dst->top;
}
// Return the window title the VO should set. Always returns a null terminated
// string. The string is valid until frontend code is invoked again. Copy it if
// you need to keep the string for an extended period of time.
const char *vo_get_window_title(struct vo *vo)
{
if (!vo->window_title)
vo->window_title = talloc_strdup(vo, "");
return vo->window_title;
}
/**
* Generates a mouse movement message if those are enable and sends it
* to the "main" MPlayer.
*
* \param posx new x position of mouse
* \param posy new y position of mouse
*/
void vo_mouse_movement(struct vo *vo, int posx, int posy)
{
char cmd_str[40];
if (!enable_mouse_movements)
return;
snprintf(cmd_str, sizeof(cmd_str), "set_mouse_pos %i %i", posx, posy);
mp_input_queue_cmd(vo->input_ctx, mp_input_parse_cmd(bstr0(cmd_str), ""));
}
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