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-rw-r--r--libass/ass_parse.c926
1 files changed, 0 insertions, 926 deletions
diff --git a/libass/ass_parse.c b/libass/ass_parse.c
deleted file mode 100644
index 0ccb5a2b19..0000000000
--- a/libass/ass_parse.c
+++ /dev/null
@@ -1,926 +0,0 @@
-/*
- * Copyright (C) 2009 Grigori Goronzy <greg@geekmind.org>
- *
- * This file is part of libass.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#include "ass_render.h"
-#include "ass_parse.h"
-
-#define MAX_BE 127
-#define NBSP 0xa0 // unicode non-breaking space character
-
-#define skip_to(x) while ((*p != (x)) && (*p != '}') && (*p != 0)) { ++p;}
-#define skip(x) if (*p == (x)) ++p; else { return p; }
-#define skipopt(x) if (*p == (x)) { ++p; }
-
-/**
- * \brief Check if starting part of (*p) matches sample.
- * If true, shift p to the first symbol after the matching part.
- */
-static inline int mystrcmp(char **p, const char *sample)
-{
- int len = strlen(sample);
- if (strncmp(*p, sample, len) == 0) {
- (*p) += len;
- return 1;
- } else
- return 0;
-}
-
-static void change_font_size(ASS_Renderer *render_priv, double sz)
-{
- double size = sz * render_priv->font_scale;
-
- if (size < 1)
- size = 1;
- else if (size > render_priv->height * 2)
- size = render_priv->height * 2;
-
- ass_font_set_size(render_priv->state.font, size);
-
- render_priv->state.font_size = sz;
-}
-
-/**
- * \brief Change current font, using setting from render_priv->state.
- */
-void update_font(ASS_Renderer *render_priv)
-{
- unsigned val;
- ASS_FontDesc desc;
- desc.family = strdup(render_priv->state.family);
- desc.treat_family_as_pattern =
- render_priv->state.treat_family_as_pattern;
-
- val = render_priv->state.bold;
- // 0 = normal, 1 = bold, >1 = exact weight
- if (val == 1 || val == -1)
- val = 200; // bold
- else if (val <= 0)
- val = 80; // normal
- desc.bold = val;
-
- val = render_priv->state.italic;
- if (val == 1 || val == -1)
- val = 110; // italic
- else if (val <= 0)
- val = 0; // normal
- desc.italic = val;
-
- render_priv->state.font =
- ass_font_new(render_priv->cache.font_cache, render_priv->library,
- render_priv->ftlibrary, render_priv->fontconfig_priv,
- &desc);
- free(desc.family);
-
- if (render_priv->state.font)
- change_font_size(render_priv, render_priv->state.font_size);
-}
-
-/**
- * \brief Change border width
- * negative value resets border to style value
- */
-void change_border(ASS_Renderer *render_priv, double border_x,
- double border_y)
-{
- int bord;
- if (!render_priv->state.font)
- return;
-
- if (border_x < 0 && border_y < 0) {
- if (render_priv->state.style->BorderStyle == 1 ||
- render_priv->state.style->BorderStyle == 3)
- border_x = border_y = render_priv->state.style->Outline;
- else
- border_x = border_y = 1.;
- }
-
- render_priv->state.border_x = border_x;
- render_priv->state.border_y = border_y;
-
- bord = 64 * border_x * render_priv->border_scale;
- if (bord > 0 && border_x == border_y) {
- if (!render_priv->state.stroker) {
- int error;
- error =
- FT_Stroker_New(render_priv->ftlibrary,
- &render_priv->state.stroker);
- if (error) {
- ass_msg(render_priv->library, MSGL_V,
- "failed to get stroker");
- render_priv->state.stroker = 0;
- }
- }
- if (render_priv->state.stroker)
- FT_Stroker_Set(render_priv->state.stroker, bord,
- FT_STROKER_LINECAP_ROUND,
- FT_STROKER_LINEJOIN_ROUND, 0);
- } else {
- FT_Stroker_Done(render_priv->state.stroker);
- render_priv->state.stroker = 0;
- }
-}
-
-/**
- * \brief Calculate a weighted average of two colors
- * calculates c1*(1-a) + c2*a, but separately for each component except alpha
- */
-static void change_color(uint32_t *var, uint32_t new, double pwr)
-{
- (*var) = ((uint32_t) (_r(*var) * (1 - pwr) + _r(new) * pwr) << 24) +
- ((uint32_t) (_g(*var) * (1 - pwr) + _g(new) * pwr) << 16) +
- ((uint32_t) (_b(*var) * (1 - pwr) + _b(new) * pwr) << 8) + _a(*var);
-}
-
-// like change_color, but for alpha component only
-inline void change_alpha(uint32_t *var, uint32_t new, double pwr)
-{
- *var =
- (_r(*var) << 24) + (_g(*var) << 16) + (_b(*var) << 8) +
- (uint32_t) (_a(*var) * (1 - pwr) + _a(new) * pwr);
-}
-
-/**
- * \brief Multiply two alpha values
- * \param a first value
- * \param b second value
- * \return result of multiplication
- * Parameters and result are limited by 0xFF.
- */
-inline uint32_t mult_alpha(uint32_t a, uint32_t b)
-{
- return 0xFF - (0xFF - a) * (0xFF - b) / 0xFF;
-}
-
-/**
- * \brief Calculate alpha value by piecewise linear function
- * Used for \fad, \fade implementation.
- */
-static unsigned
-interpolate_alpha(long long now, long long t1, long long t2, long long t3,
- long long t4, unsigned a1, unsigned a2, unsigned a3)
-{
- unsigned a;
- double cf;
- if (now <= t1) {
- a = a1;
- } else if (now >= t4) {
- a = a3;
- } else if (now < t2) { // and > t1
- cf = ((double) (now - t1)) / (t2 - t1);
- a = a1 * (1 - cf) + a2 * cf;
- } else if (now > t3) {
- cf = ((double) (now - t3)) / (t4 - t3);
- a = a2 * (1 - cf) + a3 * cf;
- } else { // t2 <= now <= t3
- a = a2;
- }
-
- return a;
-}
-
-/**
- * Parse a vector clip into an outline, using the proper scaling
- * parameters. Translate it to correct for screen borders, if needed.
- */
-static char *parse_vector_clip(ASS_Renderer *render_priv, char *p)
-{
- int scale = 1;
- int res = 0;
- ASS_Drawing *drawing;
-
- render_priv->state.clip_drawing = ass_drawing_new(
- render_priv->fontconfig_priv,
- render_priv->state.font,
- render_priv->settings.hinting,
- render_priv->ftlibrary);
- drawing = render_priv->state.clip_drawing;
- skipopt('(');
- res = mystrtoi(&p, &scale);
- skipopt(',')
- if (!res)
- scale = 1;
- drawing->scale = scale;
- drawing->scale_x = render_priv->font_scale_x * render_priv->font_scale;
- drawing->scale_y = render_priv->font_scale;
- while (*p != ')' && *p != '}' && p != 0)
- ass_drawing_add_char(drawing, *p++);
- skipopt(')');
- if (ass_drawing_parse(drawing, 1)) {
- // We need to translate the clip according to screen borders
- if (render_priv->settings.left_margin != 0 ||
- render_priv->settings.top_margin != 0) {
- FT_Vector trans = {
- .x = int_to_d6(render_priv->settings.left_margin),
- .y = -int_to_d6(render_priv->settings.top_margin),
- };
- FT_Outline_Translate(&drawing->glyph->outline, trans.x, trans.y);
- }
- ass_msg(render_priv->library, MSGL_DBG2,
- "Parsed vector clip: scale %d, scales (%f, %f) string [%s]\n",
- scale, drawing->scale_x, drawing->scale_y, drawing->text);
- }
-
- return p;
-}
-
-/**
- * \brief Parse style override tag.
- * \param p string to parse
- * \param pwr multiplier for some tag effects (comes from \t tags)
- */
-static char *parse_tag(ASS_Renderer *render_priv, char *p, double pwr)
-{
- skip_to('\\');
- skip('\\');
- if ((*p == '}') || (*p == 0))
- return p;
-
- // New tags introduced in vsfilter 2.39
- if (mystrcmp(&p, "xbord")) {
- double val;
- if (mystrtod(&p, &val))
- val = render_priv->state.border_x * (1 - pwr) + val * pwr;
- else
- val = -1.;
- change_border(render_priv, val, render_priv->state.border_y);
- } else if (mystrcmp(&p, "ybord")) {
- double val;
- if (mystrtod(&p, &val))
- val = render_priv->state.border_y * (1 - pwr) + val * pwr;
- else
- val = -1.;
- change_border(render_priv, render_priv->state.border_x, val);
- } else if (mystrcmp(&p, "xshad")) {
- double val;
- if (mystrtod(&p, &val))
- val = render_priv->state.shadow_x * (1 - pwr) + val * pwr;
- else
- val = 0.;
- render_priv->state.shadow_x = val;
- } else if (mystrcmp(&p, "yshad")) {
- double val;
- if (mystrtod(&p, &val))
- val = render_priv->state.shadow_y * (1 - pwr) + val * pwr;
- else
- val = 0.;
- render_priv->state.shadow_y = val;
- } else if (mystrcmp(&p, "fax")) {
- double val;
- if (mystrtod(&p, &val))
- render_priv->state.fax =
- val * pwr + render_priv->state.fax * (1 - pwr);
- else
- render_priv->state.fax = 0.;
- } else if (mystrcmp(&p, "fay")) {
- double val;
- if (mystrtod(&p, &val))
- render_priv->state.fay =
- val * pwr + render_priv->state.fay * (1 - pwr);
- else
- render_priv->state.fay = 0.;
- } else if (mystrcmp(&p, "iclip")) {
- int x0, y0, x1, y1;
- int res = 1;
- char *start = p;
- skipopt('(');
- res &= mystrtoi(&p, &x0);
- skipopt(',');
- res &= mystrtoi(&p, &y0);
- skipopt(',');
- res &= mystrtoi(&p, &x1);
- skipopt(',');
- res &= mystrtoi(&p, &y1);
- skipopt(')');
- if (res) {
- render_priv->state.clip_x0 =
- render_priv->state.clip_x0 * (1 - pwr) + x0 * pwr;
- render_priv->state.clip_x1 =
- render_priv->state.clip_x1 * (1 - pwr) + x1 * pwr;
- render_priv->state.clip_y0 =
- render_priv->state.clip_y0 * (1 - pwr) + y0 * pwr;
- render_priv->state.clip_y1 =
- render_priv->state.clip_y1 * (1 - pwr) + y1 * pwr;
- render_priv->state.clip_mode = 1;
- } else if (!render_priv->state.clip_drawing) {
- p = parse_vector_clip(render_priv, start);
- render_priv->state.clip_drawing_mode = 1;
- } else
- render_priv->state.clip_mode = 0;
- } else if (mystrcmp(&p, "blur")) {
- double val;
- if (mystrtod(&p, &val)) {
- val = render_priv->state.blur * (1 - pwr) + val * pwr;
- val = (val < 0) ? 0 : val;
- val = (val > BLUR_MAX_RADIUS) ? BLUR_MAX_RADIUS : val;
- render_priv->state.blur = val;
- } else
- render_priv->state.blur = 0.0;
- // ASS standard tags
- } else if (mystrcmp(&p, "fsc")) {
- char tp = *p++;
- double val;
- if (tp == 'x') {
- if (mystrtod(&p, &val)) {
- val /= 100;
- render_priv->state.scale_x =
- render_priv->state.scale_x * (1 - pwr) + val * pwr;
- } else
- render_priv->state.scale_x =
- render_priv->state.style->ScaleX;
- } else if (tp == 'y') {
- if (mystrtod(&p, &val)) {
- val /= 100;
- render_priv->state.scale_y =
- render_priv->state.scale_y * (1 - pwr) + val * pwr;
- } else
- render_priv->state.scale_y =
- render_priv->state.style->ScaleY;
- }
- } else if (mystrcmp(&p, "fsp")) {
- double val;
- if (mystrtod(&p, &val))
- render_priv->state.hspacing =
- render_priv->state.hspacing * (1 - pwr) + val * pwr;
- else
- render_priv->state.hspacing = render_priv->state.style->Spacing;
- } else if (mystrcmp(&p, "fs")) {
- double val;
- if (mystrtod(&p, &val))
- val = render_priv->state.font_size * (1 - pwr) + val * pwr;
- else
- val = render_priv->state.style->FontSize;
- if (render_priv->state.font)
- change_font_size(render_priv, val);
- } else if (mystrcmp(&p, "bord")) {
- double val;
- if (mystrtod(&p, &val)) {
- if (render_priv->state.border_x == render_priv->state.border_y)
- val = render_priv->state.border_x * (1 - pwr) + val * pwr;
- } else
- val = -1.; // reset to default
- change_border(render_priv, val, val);
- } else if (mystrcmp(&p, "move")) {
- double x1, x2, y1, y2;
- long long t1, t2, delta_t, t;
- double x, y;
- double k;
- skip('(');
- mystrtod(&p, &x1);
- skip(',');
- mystrtod(&p, &y1);
- skip(',');
- mystrtod(&p, &x2);
- skip(',');
- mystrtod(&p, &y2);
- if (*p == ',') {
- skip(',');
- mystrtoll(&p, &t1);
- skip(',');
- mystrtoll(&p, &t2);
- ass_msg(render_priv->library, MSGL_DBG2,
- "movement6: (%f, %f) -> (%f, %f), (%" PRId64 " .. %"
- PRId64 ")\n", x1, y1, x2, y2, (int64_t) t1,
- (int64_t) t2);
- } else {
- t1 = 0;
- t2 = render_priv->state.event->Duration;
- ass_msg(render_priv->library, MSGL_DBG2,
- "movement: (%f, %f) -> (%f, %f)", x1, y1, x2, y2);
- }
- skip(')');
- delta_t = t2 - t1;
- t = render_priv->time - render_priv->state.event->Start;
- if (t < t1)
- k = 0.;
- else if (t > t2)
- k = 1.;
- else
- k = ((double) (t - t1)) / delta_t;
- x = k * (x2 - x1) + x1;
- y = k * (y2 - y1) + y1;
- if (render_priv->state.evt_type != EVENT_POSITIONED) {
- render_priv->state.pos_x = x;
- render_priv->state.pos_y = y;
- render_priv->state.detect_collisions = 0;
- render_priv->state.evt_type = EVENT_POSITIONED;
- }
- } else if (mystrcmp(&p, "frx")) {
- double val;
- if (mystrtod(&p, &val)) {
- val *= M_PI / 180;
- render_priv->state.frx =
- val * pwr + render_priv->state.frx * (1 - pwr);
- } else
- render_priv->state.frx = 0.;
- } else if (mystrcmp(&p, "fry")) {
- double val;
- if (mystrtod(&p, &val)) {
- val *= M_PI / 180;
- render_priv->state.fry =
- val * pwr + render_priv->state.fry * (1 - pwr);
- } else
- render_priv->state.fry = 0.;
- } else if (mystrcmp(&p, "frz") || mystrcmp(&p, "fr")) {
- double val;
- if (mystrtod(&p, &val)) {
- val *= M_PI / 180;
- render_priv->state.frz =
- val * pwr + render_priv->state.frz * (1 - pwr);
- } else
- render_priv->state.frz =
- M_PI * render_priv->state.style->Angle / 180.;
- } else if (mystrcmp(&p, "fn")) {
- char *start = p;
- char *family;
- skip_to('\\');
- if (p > start) {
- family = malloc(p - start + 1);
- strncpy(family, start, p - start);
- family[p - start] = '\0';
- } else
- family = strdup(render_priv->state.style->FontName);
- if (render_priv->state.family)
- free(render_priv->state.family);
- render_priv->state.family = family;
- update_font(render_priv);
- } else if (mystrcmp(&p, "alpha")) {
- uint32_t val;
- int i;
- int hex = render_priv->track->track_type == TRACK_TYPE_ASS;
- if (strtocolor(render_priv->library, &p, &val, hex)) {
- unsigned char a = val >> 24;
- for (i = 0; i < 4; ++i)
- change_alpha(&render_priv->state.c[i], a, pwr);
- } else {
- change_alpha(&render_priv->state.c[0],
- render_priv->state.style->PrimaryColour, pwr);
- change_alpha(&render_priv->state.c[1],
- render_priv->state.style->SecondaryColour, pwr);
- change_alpha(&render_priv->state.c[2],
- render_priv->state.style->OutlineColour, pwr);
- change_alpha(&render_priv->state.c[3],
- render_priv->state.style->BackColour, pwr);
- }
- // FIXME: simplify
- } else if (mystrcmp(&p, "an")) {
- int val;
- if (mystrtoi(&p, &val) && val) {
- int v = (val - 1) / 3; // 0, 1 or 2 for vertical alignment
- ass_msg(render_priv->library, MSGL_DBG2, "an %d", val);
- if (v != 0)
- v = 3 - v;
- val = ((val - 1) % 3) + 1; // horizontal alignment
- val += v * 4;
- ass_msg(render_priv->library, MSGL_DBG2, "align %d", val);
- render_priv->state.alignment = val;
- } else
- render_priv->state.alignment =
- render_priv->state.style->Alignment;
- } else if (mystrcmp(&p, "a")) {
- int val;
- if (mystrtoi(&p, &val) && val)
- // take care of a vsfilter quirk: handle illegal \a8 like \a5
- render_priv->state.alignment = (val == 8) ? 5 : val;
- else
- render_priv->state.alignment =
- render_priv->state.style->Alignment;
- } else if (mystrcmp(&p, "pos")) {
- double v1, v2;
- skip('(');
- mystrtod(&p, &v1);
- skip(',');
- mystrtod(&p, &v2);
- skip(')');
- ass_msg(render_priv->library, MSGL_DBG2, "pos(%f, %f)", v1, v2);
- if (render_priv->state.evt_type == EVENT_POSITIONED) {
- ass_msg(render_priv->library, MSGL_V, "Subtitle has a new \\pos "
- "after \\move or \\pos, ignoring");
- } else {
- render_priv->state.evt_type = EVENT_POSITIONED;
- render_priv->state.detect_collisions = 0;
- render_priv->state.pos_x = v1;
- render_priv->state.pos_y = v2;
- }
- } else if (mystrcmp(&p, "fad")) {
- int a1, a2, a3;
- long long t1, t2, t3, t4;
- if (*p == 'e')
- ++p; // either \fad or \fade
- skip('(');
- mystrtoi(&p, &a1);
- skip(',');
- mystrtoi(&p, &a2);
- if (*p == ')') {
- // 2-argument version (\fad, according to specs)
- // a1 and a2 are fade-in and fade-out durations
- t1 = 0;
- t4 = render_priv->state.event->Duration;
- t2 = a1;
- t3 = t4 - a2;
- a1 = 0xFF;
- a2 = 0;
- a3 = 0xFF;
- } else {
- // 6-argument version (\fade)
- // a1 and a2 (and a3) are opacity values
- skip(',');
- mystrtoi(&p, &a3);
- skip(',');
- mystrtoll(&p, &t1);
- skip(',');
- mystrtoll(&p, &t2);
- skip(',');
- mystrtoll(&p, &t3);
- skip(',');
- mystrtoll(&p, &t4);
- }
- skip(')');
- render_priv->state.fade =
- interpolate_alpha(render_priv->time -
- render_priv->state.event->Start, t1, t2,
- t3, t4, a1, a2, a3);
- } else if (mystrcmp(&p, "org")) {
- int v1, v2;
- skip('(');
- mystrtoi(&p, &v1);
- skip(',');
- mystrtoi(&p, &v2);
- skip(')');
- ass_msg(render_priv->library, MSGL_DBG2, "org(%d, %d)", v1, v2);
- if (!render_priv->state.have_origin) {
- render_priv->state.org_x = v1;
- render_priv->state.org_y = v2;
- render_priv->state.have_origin = 1;
- render_priv->state.detect_collisions = 0;
- }
- } else if (mystrcmp(&p, "t")) {
- double v[3];
- int v1, v2;
- double v3;
- int cnt;
- long long t1, t2, t, delta_t;
- double k;
- skip('(');
- for (cnt = 0; cnt < 3; ++cnt) {
- if (*p == '\\')
- break;
- v[cnt] = strtod(p, &p);
- skip(',');
- }
- if (cnt == 3) {
- v1 = v[0];
- v2 = (v[1] < v1) ? render_priv->state.event->Duration : v[1];
- v3 = v[2];
- } else if (cnt == 2) {
- v1 = v[0];
- v2 = (v[1] < v1) ? render_priv->state.event->Duration : v[1];
- v3 = 1.;
- } else if (cnt == 1) {
- v1 = 0;
- v2 = render_priv->state.event->Duration;
- v3 = v[0];
- } else { // cnt == 0
- v1 = 0;
- v2 = render_priv->state.event->Duration;
- v3 = 1.;
- }
- render_priv->state.detect_collisions = 0;
- t1 = v1;
- t2 = v2;
- delta_t = v2 - v1;
- if (v3 < 0.)
- v3 = 0.;
- t = render_priv->time - render_priv->state.event->Start; // FIXME: move to render_context
- if (t <= t1)
- k = 0.;
- else if (t >= t2)
- k = 1.;
- else {
- assert(delta_t != 0.);
- k = pow(((double) (t - t1)) / delta_t, v3);
- }
- while (*p == '\\')
- p = parse_tag(render_priv, p, k); // maybe k*pwr ? no, specs forbid nested \t's
- skip_to(')'); // in case there is some unknown tag or a comment
- skip(')');
- } else if (mystrcmp(&p, "clip")) {
- char *start = p;
- int x0, y0, x1, y1;
- int res = 1;
- skipopt('(');
- res &= mystrtoi(&p, &x0);
- skipopt(',');
- res &= mystrtoi(&p, &y0);
- skipopt(',');
- res &= mystrtoi(&p, &x1);
- skipopt(',');
- res &= mystrtoi(&p, &y1);
- skipopt(')');
- if (res) {
- render_priv->state.clip_x0 =
- render_priv->state.clip_x0 * (1 - pwr) + x0 * pwr;
- render_priv->state.clip_x1 =
- render_priv->state.clip_x1 * (1 - pwr) + x1 * pwr;
- render_priv->state.clip_y0 =
- render_priv->state.clip_y0 * (1 - pwr) + y0 * pwr;
- render_priv->state.clip_y1 =
- render_priv->state.clip_y1 * (1 - pwr) + y1 * pwr;
- // Might be a vector clip
- } else if (!render_priv->state.clip_drawing) {
- p = parse_vector_clip(render_priv, start);
- render_priv->state.clip_drawing_mode = 0;
- } else {
- render_priv->state.clip_x0 = 0;
- render_priv->state.clip_y0 = 0;
- render_priv->state.clip_x1 = render_priv->track->PlayResX;
- render_priv->state.clip_y1 = render_priv->track->PlayResY;
- }
- } else if (mystrcmp(&p, "c")) {
- uint32_t val;
- int hex = render_priv->track->track_type == TRACK_TYPE_ASS;
- if (!strtocolor(render_priv->library, &p, &val, hex))
- val = render_priv->state.style->PrimaryColour;
- ass_msg(render_priv->library, MSGL_DBG2, "color: %X", val);
- change_color(&render_priv->state.c[0], val, pwr);
- } else if ((*p >= '1') && (*p <= '4') && (++p)
- && (mystrcmp(&p, "c") || mystrcmp(&p, "a"))) {
- char n = *(p - 2);
- int cidx = n - '1';
- char cmd = *(p - 1);
- uint32_t val;
- int hex = render_priv->track->track_type == TRACK_TYPE_ASS;
- assert((n >= '1') && (n <= '4'));
- if (!strtocolor(render_priv->library, &p, &val, hex))
- switch (n) {
- case '1':
- val = render_priv->state.style->PrimaryColour;
- break;
- case '2':
- val = render_priv->state.style->SecondaryColour;
- break;
- case '3':
- val = render_priv->state.style->OutlineColour;
- break;
- case '4':
- val = render_priv->state.style->BackColour;
- break;
- default:
- val = 0;
- break; // impossible due to assert; avoid compilation warning
- }
- switch (cmd) {
- case 'c':
- change_color(render_priv->state.c + cidx, val, pwr);
- break;
- case 'a':
- change_alpha(render_priv->state.c + cidx, val >> 24, pwr);
- break;
- default:
- ass_msg(render_priv->library, MSGL_WARN, "Bad command: %c%c",
- n, cmd);
- break;
- }
- ass_msg(render_priv->library, MSGL_DBG2, "single c/a at %f: %c%c = %X",
- pwr, n, cmd, render_priv->state.c[cidx]);
- } else if (mystrcmp(&p, "r")) {
- reset_render_context(render_priv);
- } else if (mystrcmp(&p, "be")) {
- int val;
- if (mystrtoi(&p, &val)) {
- // Clamp to a safe upper limit, since high values need excessive CPU
- val = (val < 0) ? 0 : val;
- val = (val > MAX_BE) ? MAX_BE : val;
- render_priv->state.be = val;
- } else
- render_priv->state.be = 0;
- } else if (mystrcmp(&p, "b")) {
- int b;
- if (mystrtoi(&p, &b)) {
- if (pwr >= .5)
- render_priv->state.bold = b;
- } else
- render_priv->state.bold = render_priv->state.style->Bold;
- update_font(render_priv);
- } else if (mystrcmp(&p, "i")) {
- int i;
- if (mystrtoi(&p, &i)) {
- if (pwr >= .5)
- render_priv->state.italic = i;
- } else
- render_priv->state.italic = render_priv->state.style->Italic;
- update_font(render_priv);
- } else if (mystrcmp(&p, "kf") || mystrcmp(&p, "K")) {
- int val = 0;
- mystrtoi(&p, &val);
- render_priv->state.effect_type = EF_KARAOKE_KF;
- if (render_priv->state.effect_timing)
- render_priv->state.effect_skip_timing +=
- render_priv->state.effect_timing;
- render_priv->state.effect_timing = val * 10;
- } else if (mystrcmp(&p, "ko")) {
- int val = 0;
- mystrtoi(&p, &val);
- render_priv->state.effect_type = EF_KARAOKE_KO;
- if (render_priv->state.effect_timing)
- render_priv->state.effect_skip_timing +=
- render_priv->state.effect_timing;
- render_priv->state.effect_timing = val * 10;
- } else if (mystrcmp(&p, "k")) {
- int val = 0;
- mystrtoi(&p, &val);
- render_priv->state.effect_type = EF_KARAOKE;
- if (render_priv->state.effect_timing)
- render_priv->state.effect_skip_timing +=
- render_priv->state.effect_timing;
- render_priv->state.effect_timing = val * 10;
- } else if (mystrcmp(&p, "shad")) {
- double val;
- if (mystrtod(&p, &val)) {
- if (render_priv->state.shadow_x == render_priv->state.shadow_y)
- val = render_priv->state.shadow_x * (1 - pwr) + val * pwr;
- } else
- val = 0.;
- render_priv->state.shadow_x = render_priv->state.shadow_y = val;
- } else if (mystrcmp(&p, "s")) {
- int val;
- if (mystrtoi(&p, &val) && val)
- render_priv->state.flags |= DECO_STRIKETHROUGH;
- else
- render_priv->state.flags &= ~DECO_STRIKETHROUGH;
- } else if (mystrcmp(&p, "u")) {
- int val;
- if (mystrtoi(&p, &val) && val)
- render_priv->state.flags |= DECO_UNDERLINE;
- else
- render_priv->state.flags &= ~DECO_UNDERLINE;
- } else if (mystrcmp(&p, "pbo")) {
- double val = 0;
- if (mystrtod(&p, &val))
- render_priv->state.drawing->pbo = val;
- } else if (mystrcmp(&p, "p")) {
- int val;
- if (!mystrtoi(&p, &val))
- val = 0;
- if (val)
- render_priv->state.drawing->scale = val;
- render_priv->state.drawing_mode = !!val;
- } else if (mystrcmp(&p, "q")) {
- int val;
- if (!mystrtoi(&p, &val))
- val = render_priv->track->WrapStyle;
- render_priv->state.wrap_style = val;
- }
-
- return p;
-}
-
-void apply_transition_effects(ASS_Renderer *render_priv, ASS_Event *event)
-{
- int v[4];
- int cnt;
- char *p = event->Effect;
-
- if (!p || !*p)
- return;
-
- cnt = 0;
- while (cnt < 4 && (p = strchr(p, ';'))) {
- v[cnt++] = atoi(++p);
- }
-
- if (strncmp(event->Effect, "Banner;", 7) == 0) {
- int delay;
- if (cnt < 1) {
- ass_msg(render_priv->library, MSGL_V,
- "Error parsing effect: '%s'", event->Effect);
- return;
- }
- if (cnt >= 2 && v[1] == 0) // right-to-left
- render_priv->state.scroll_direction = SCROLL_RL;
- else // left-to-right
- render_priv->state.scroll_direction = SCROLL_LR;
-
- delay = v[0];
- if (delay == 0)
- delay = 1; // ?
- render_priv->state.scroll_shift =
- (render_priv->time - render_priv->state.event->Start) / delay;
- render_priv->state.evt_type = EVENT_HSCROLL;
- return;
- }
-
- if (strncmp(event->Effect, "Scroll up;", 10) == 0) {
- render_priv->state.scroll_direction = SCROLL_BT;
- } else if (strncmp(event->Effect, "Scroll down;", 12) == 0) {
- render_priv->state.scroll_direction = SCROLL_TB;
- } else {
- ass_msg(render_priv->library, MSGL_V,
- "Unknown transition effect: '%s'", event->Effect);
- return;
- }
- // parse scroll up/down parameters
- {
- int delay;
- int y0, y1;
- if (cnt < 3) {
- ass_msg(render_priv->library, MSGL_V,
- "Error parsing effect: '%s'", event->Effect);
- return;
- }
- delay = v[2];
- if (delay == 0)
- delay = 1; // ?
- render_priv->state.scroll_shift =
- (render_priv->time - render_priv->state.event->Start) / delay;
- if (v[0] < v[1]) {
- y0 = v[0];
- y1 = v[1];
- } else {
- y0 = v[1];
- y1 = v[0];
- }
- if (y1 == 0)
- y1 = render_priv->track->PlayResY; // y0=y1=0 means fullscreen scrolling
- render_priv->state.clip_y0 = y0;
- render_priv->state.clip_y1 = y1;
- render_priv->state.evt_type = EVENT_VSCROLL;
- render_priv->state.detect_collisions = 0;
- }
-
-}
-
-/**
- * \brief Get next ucs4 char from string, parsing and executing style overrides
- * \param str string pointer
- * \return ucs4 code of the next char
- * On return str points to the unparsed part of the string
- */
-unsigned get_next_char(ASS_Renderer *render_priv, char **str)
-{
- char *p = *str;
- unsigned chr;
- if (*p == '{') { // '\0' goes here
- p++;
- while (1) {
- p = parse_tag(render_priv, p, 1.);
- if (*p == '}') { // end of tag
- p++;
- if (*p == '{') {
- p++;
- continue;
- } else
- break;
- } else if (*p != '\\')
- ass_msg(render_priv->library, MSGL_V,
- "Unable to parse: '%s'", p);
- if (*p == 0)
- break;
- }
- }
- if (*p == '\t') {
- ++p;
- *str = p;
- return ' ';
- }
- if (*p == '\\') {
- if ((p[1] == 'N') || ((p[1] == 'n') &&
- (render_priv->state.wrap_style == 2))) {
- p += 2;
- *str = p;
- return '\n';
- } else if (p[1] == 'n') {
- p += 2;
- *str = p;
- return ' ';
- } else if (p[1] == 'h') {
- p += 2;
- *str = p;
- return NBSP;
- }
- }
- chr = ass_utf8_get_char((char **) &p);
- *str = p;
- return chr;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 10:52:46 +0000