mirror of
https://github.com/mpv-player/mpv
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90b968a67a
If a VO is created, but no video is playing (i.e. --force-window is used), then until now no subtitles were shown. This is because VO subtitle display normally depends on video frame timing. If there are no video frames, there can be no subtitles. Change this and add some code to handle this situation specifically. Set a subtitle PTS manually and request VO redrawing manually, which gets the subtitles rendered somehow. This is kind of shaky. The subtitles are essentially sampled at arbitrary times (such as when new audio data is decoded and pushed to the AO, or on user interaction). To make a it slightly more consistent, force a completely arbitrary minimum FPS of 10. Other solutions (such as creating fake video) would be more intrusive or would require VO-level API changes. Fixes #3684.
216 lines
6.5 KiB
C
216 lines
6.5 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MPLAYER_SUB_H
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#define MPLAYER_SUB_H
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "options/m_option.h"
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// NOTE: VOs must support at least SUBBITMAP_RGBA.
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enum sub_bitmap_format {
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SUBBITMAP_EMPTY = 0,// no bitmaps; always has num_parts==0
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SUBBITMAP_LIBASS, // A8, with a per-surface blend color (libass.color)
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SUBBITMAP_RGBA, // B8G8R8A8 (MSB=A, LSB=B), scaled, premultiplied alpha
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SUBBITMAP_COUNT
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};
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struct sub_bitmap {
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void *bitmap;
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int stride;
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// Note: not clipped, going outside the screen area is allowed
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// (except for SUBBITMAP_LIBASS, which is always clipped)
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int w, h;
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int x, y;
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int dw, dh;
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// If the containing struct sub_bitmaps has the packed field set, then this
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// is the position within the source. (Strictly speaking this is redundant
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// with the bitmap pointer.)
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int src_x, src_y;
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struct {
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uint32_t color;
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} libass;
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};
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struct sub_bitmaps {
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// For VO cache state (limited by MAX_OSD_PARTS)
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int render_index;
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enum sub_bitmap_format format;
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struct sub_bitmap *parts;
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int num_parts;
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// Packed representation of the bitmap data. If non-NULL, then the
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// parts[].bitmap pointer points into the image data here (and stride will
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// correspond to packed->stride[0]).
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// SUBBITMAP_RGBA: IMGFMT_BGRA (exact match)
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// SUBBITMAP_LIBASS: IMGFMT_Y8 (not the same, but compatible layout)
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// Other formats have this set to NULL.
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struct mp_image *packed;
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// Bounding box for the packed image. All parts will be within the bounding
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// box. (The origin of the box is at (0,0).)
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int packed_w, packed_h;
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int change_id; // Incremented on each change
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};
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struct mp_osd_res {
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int w, h; // screen dimensions, including black borders
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int mt, mb, ml, mr; // borders (top, bottom, left, right)
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double display_par;
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};
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// 0 <= sub_bitmaps.render_index < MAX_OSD_PARTS
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#define MAX_OSD_PARTS 5
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// Start of OSD symbols in osd_font.pfb
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#define OSD_CODEPOINTS 0xE000
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// OSD symbols. osd_font.pfb has them starting from codepoint OSD_CODEPOINTS.
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// Symbols with a value >= 32 are normal unicode codepoints.
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enum mp_osd_font_codepoints {
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OSD_PLAY = 0x01,
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OSD_PAUSE = 0x02,
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OSD_STOP = 0x03,
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OSD_REW = 0x04,
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OSD_FFW = 0x05,
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OSD_CLOCK = 0x06,
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OSD_CONTRAST = 0x07,
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OSD_SATURATION = 0x08,
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OSD_VOLUME = 0x09,
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OSD_BRIGHTNESS = 0x0A,
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OSD_HUE = 0x0B,
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OSD_BALANCE = 0x0C,
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OSD_PANSCAN = 0x50,
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OSD_PB_START = 0x10,
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OSD_PB_0 = 0x11,
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OSD_PB_END = 0x12,
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OSD_PB_1 = 0x13,
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};
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// Never valid UTF-8, so we expect it's free for use.
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// Specially interpreted by osd_libass.c, in order to allow/escape ASS tags.
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#define OSD_ASS_0 "\xFD"
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#define OSD_ASS_1 "\xFE"
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struct osd_style_opts {
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char *font;
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float font_size;
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struct m_color color;
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struct m_color border_color;
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struct m_color shadow_color;
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struct m_color back_color;
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float border_size;
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float shadow_offset;
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float spacing;
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int margin_x;
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int margin_y;
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int align_x;
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int align_y;
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float blur;
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int bold;
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int italic;
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};
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extern const struct m_sub_options osd_style_conf;
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extern const struct m_sub_options sub_style_conf;
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struct osd_state;
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struct osd_object;
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struct mpv_global;
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struct dec_sub;
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struct osd_state *osd_create(struct mpv_global *global);
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void osd_changed(struct osd_state *osd);
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void osd_free(struct osd_state *osd);
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bool osd_query_and_reset_want_redraw(struct osd_state *osd);
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void osd_set_text(struct osd_state *osd, const char *text);
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void osd_set_sub(struct osd_state *osd, int index, struct dec_sub *dec_sub);
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bool osd_get_render_subs_in_filter(struct osd_state *osd);
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void osd_set_render_subs_in_filter(struct osd_state *osd, bool s);
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void osd_set_force_video_pts(struct osd_state *osd, double video_pts);
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double osd_get_force_video_pts(struct osd_state *osd);
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struct osd_progbar_state {
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int type; // <0: disabled, 1-255: symbol, else: no symbol
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float value; // range 0.0-1.0
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float *stops; // used for chapter indicators (0.0-1.0 each)
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int num_stops;
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};
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void osd_set_progbar(struct osd_state *osd, struct osd_progbar_state *s);
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void osd_set_external2(struct osd_state *osd, struct sub_bitmaps *imgs);
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enum mp_osd_draw_flags {
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OSD_DRAW_SUB_FILTER = (1 << 0),
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OSD_DRAW_SUB_ONLY = (1 << 1),
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OSD_DRAW_OSD_ONLY = (1 << 2),
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};
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void osd_draw(struct osd_state *osd, struct mp_osd_res res,
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double video_pts, int draw_flags,
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const bool formats[SUBBITMAP_COUNT],
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void (*cb)(void *ctx, struct sub_bitmaps *imgs), void *cb_ctx);
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struct mp_image;
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bool osd_draw_on_image(struct osd_state *osd, struct mp_osd_res res,
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double video_pts, int draw_flags, struct mp_image *dest);
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struct mp_image_pool;
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void osd_draw_on_image_p(struct osd_state *osd, struct mp_osd_res res,
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double video_pts, int draw_flags,
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struct mp_image_pool *pool, struct mp_image *dest);
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void osd_resize(struct osd_state *osd, struct mp_osd_res res);
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struct mp_image_params;
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struct mp_osd_res osd_res_from_image_params(const struct mp_image_params *p);
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struct mp_osd_res osd_get_vo_res(struct osd_state *osd);
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void osd_rescale_bitmaps(struct sub_bitmaps *imgs, int frame_w, int frame_h,
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struct mp_osd_res res, double compensate_par);
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// defined in osd_libass.c and osd_dummy.c
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// internal use only
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void osd_object_get_bitmaps(struct osd_state *osd, struct osd_object *obj,
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int format, struct sub_bitmaps *out_imgs);
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void osd_init_backend(struct osd_state *osd);
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void osd_destroy_backend(struct osd_state *osd);
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void osd_set_external(struct osd_state *osd, void *id, int res_x, int res_y,
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char *text);
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// doesn't need locking
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void osd_get_function_sym(char *buffer, size_t buffer_size, int osd_function);
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#endif /* MPLAYER_SUB_H */
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