| /* |
| * SSA/ASS spliting functions |
| * Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avcodec.h" |
| #include "ass_split.h" |
| |
| typedef enum { |
| ASS_STR, |
| ASS_INT, |
| ASS_FLT, |
| ASS_COLOR, |
| ASS_TIMESTAMP, |
| ASS_ALGN, |
| } ASSFieldType; |
| |
| typedef struct { |
| const char *name; |
| int type; |
| int offset; |
| } ASSFields; |
| |
| typedef struct { |
| const char *section; |
| const char *format_header; |
| const char *fields_header; |
| int size; |
| int offset; |
| int offset_count; |
| ASSFields fields[24]; |
| } ASSSection; |
| |
| static const ASSSection ass_sections[] = { |
| { .section = "Script Info", |
| .offset = offsetof(ASS, script_info), |
| .fields = {{"ScriptType", ASS_STR, offsetof(ASSScriptInfo, script_type)}, |
| {"Collisions", ASS_STR, offsetof(ASSScriptInfo, collisions) }, |
| {"PlayResX", ASS_INT, offsetof(ASSScriptInfo, play_res_x) }, |
| {"PlayResY", ASS_INT, offsetof(ASSScriptInfo, play_res_y) }, |
| {"Timer", ASS_FLT, offsetof(ASSScriptInfo, timer) }, |
| {0}, |
| } |
| }, |
| { .section = "V4+ Styles", |
| .format_header = "Format", |
| .fields_header = "Style", |
| .size = sizeof(ASSStyle), |
| .offset = offsetof(ASS, styles), |
| .offset_count = offsetof(ASS, styles_count), |
| .fields = {{"Name", ASS_STR, offsetof(ASSStyle, name) }, |
| {"Fontname", ASS_STR, offsetof(ASSStyle, font_name) }, |
| {"Fontsize", ASS_INT, offsetof(ASSStyle, font_size) }, |
| {"PrimaryColour", ASS_COLOR, offsetof(ASSStyle, primary_color) }, |
| {"SecondaryColour", ASS_COLOR, offsetof(ASSStyle, secondary_color)}, |
| {"OutlineColour", ASS_COLOR, offsetof(ASSStyle, outline_color) }, |
| {"BackColour", ASS_COLOR, offsetof(ASSStyle, back_color) }, |
| {"Bold", ASS_INT, offsetof(ASSStyle, bold) }, |
| {"Italic", ASS_INT, offsetof(ASSStyle, italic) }, |
| {"Underline", ASS_INT, offsetof(ASSStyle, underline) }, |
| {"StrikeOut", ASS_INT, offsetof(ASSStyle, strikeout) }, |
| {"ScaleX", ASS_FLT, offsetof(ASSStyle, scalex) }, |
| {"ScaleY", ASS_FLT, offsetof(ASSStyle, scaley) }, |
| {"Spacing", ASS_FLT, offsetof(ASSStyle, spacing) }, |
| {"Angle", ASS_FLT, offsetof(ASSStyle, angle) }, |
| {"BorderStyle", ASS_INT, offsetof(ASSStyle, border_style) }, |
| {"Outline", ASS_FLT, offsetof(ASSStyle, outline) }, |
| {"Shadow", ASS_FLT, offsetof(ASSStyle, shadow) }, |
| {"Alignment", ASS_INT, offsetof(ASSStyle, alignment) }, |
| {"MarginL", ASS_INT, offsetof(ASSStyle, margin_l) }, |
| {"MarginR", ASS_INT, offsetof(ASSStyle, margin_r) }, |
| {"MarginV", ASS_INT, offsetof(ASSStyle, margin_v) }, |
| {"Encoding", ASS_INT, offsetof(ASSStyle, encoding) }, |
| {0}, |
| } |
| }, |
| { .section = "V4 Styles", |
| .format_header = "Format", |
| .fields_header = "Style", |
| .size = sizeof(ASSStyle), |
| .offset = offsetof(ASS, styles), |
| .offset_count = offsetof(ASS, styles_count), |
| .fields = {{"Name", ASS_STR, offsetof(ASSStyle, name) }, |
| {"Fontname", ASS_STR, offsetof(ASSStyle, font_name) }, |
| {"Fontsize", ASS_INT, offsetof(ASSStyle, font_size) }, |
| {"PrimaryColour", ASS_COLOR, offsetof(ASSStyle, primary_color) }, |
| {"SecondaryColour", ASS_COLOR, offsetof(ASSStyle, secondary_color)}, |
| {"TertiaryColour", ASS_COLOR, offsetof(ASSStyle, outline_color) }, |
| {"BackColour", ASS_COLOR, offsetof(ASSStyle, back_color) }, |
| {"Bold", ASS_INT, offsetof(ASSStyle, bold) }, |
| {"Italic", ASS_INT, offsetof(ASSStyle, italic) }, |
| {"BorderStyle", ASS_INT, offsetof(ASSStyle, border_style) }, |
| {"Outline", ASS_FLT, offsetof(ASSStyle, outline) }, |
| {"Shadow", ASS_FLT, offsetof(ASSStyle, shadow) }, |
| {"Alignment", ASS_ALGN, offsetof(ASSStyle, alignment) }, |
| {"MarginL", ASS_INT, offsetof(ASSStyle, margin_l) }, |
| {"MarginR", ASS_INT, offsetof(ASSStyle, margin_r) }, |
| {"MarginV", ASS_INT, offsetof(ASSStyle, margin_v) }, |
| {"AlphaLevel", ASS_INT, offsetof(ASSStyle, alpha_level) }, |
| {"Encoding", ASS_INT, offsetof(ASSStyle, encoding) }, |
| {0}, |
| } |
| }, |
| { .section = "Events", |
| .format_header = "Format", |
| .fields_header = "Dialogue", |
| .size = sizeof(ASSDialog), |
| .offset = offsetof(ASS, dialogs), |
| .offset_count = offsetof(ASS, dialogs_count), |
| .fields = {{"Layer", ASS_INT, offsetof(ASSDialog, layer) }, |
| {"Start", ASS_TIMESTAMP, offsetof(ASSDialog, start) }, |
| {"End", ASS_TIMESTAMP, offsetof(ASSDialog, end) }, |
| {"Style", ASS_STR, offsetof(ASSDialog, style) }, |
| {"Name", ASS_STR, offsetof(ASSDialog, name) }, |
| {"MarginL", ASS_INT, offsetof(ASSDialog, margin_l)}, |
| {"MarginR", ASS_INT, offsetof(ASSDialog, margin_r)}, |
| {"MarginV", ASS_INT, offsetof(ASSDialog, margin_v)}, |
| {"Effect", ASS_STR, offsetof(ASSDialog, effect) }, |
| {"Text", ASS_STR, offsetof(ASSDialog, text) }, |
| {0}, |
| } |
| }, |
| }; |
| |
| |
| typedef int (*ASSConvertFunc)(void *dest, const char *buf, int len); |
| |
| static int convert_str(void *dest, const char *buf, int len) |
| { |
| char *str = av_malloc(len + 1); |
| if (str) { |
| memcpy(str, buf, len); |
| str[len] = 0; |
| if (*(void **)dest) |
| av_free(*(void **)dest); |
| *(char **)dest = str; |
| } |
| return !str; |
| } |
| static int convert_int(void *dest, const char *buf, int len) |
| { |
| return sscanf(buf, "%d", (int *)dest) == 1; |
| } |
| static int convert_flt(void *dest, const char *buf, int len) |
| { |
| return sscanf(buf, "%f", (float *)dest) == 1; |
| } |
| static int convert_color(void *dest, const char *buf, int len) |
| { |
| return sscanf(buf, "&H%8x", (int *)dest) == 1 || |
| sscanf(buf, "%d", (int *)dest) == 1; |
| } |
| static int convert_timestamp(void *dest, const char *buf, int len) |
| { |
| int c, h, m, s, cs; |
| if ((c = sscanf(buf, "%d:%02d:%02d.%02d", &h, &m, &s, &cs)) == 4) |
| *(int *)dest = 360000*h + 6000*m + 100*s + cs; |
| return c == 4; |
| } |
| static int convert_alignment(void *dest, const char *buf, int len) |
| { |
| int a; |
| if (sscanf(buf, "%d", &a) == 1) { |
| /* convert V4 Style alignment to V4+ Style */ |
| *(int *)dest = a + ((a&4) >> 1) - 5*!!(a&8); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static const ASSConvertFunc convert_func[] = { |
| [ASS_STR] = convert_str, |
| [ASS_INT] = convert_int, |
| [ASS_FLT] = convert_flt, |
| [ASS_COLOR] = convert_color, |
| [ASS_TIMESTAMP] = convert_timestamp, |
| [ASS_ALGN] = convert_alignment, |
| }; |
| |
| |
| struct ASSSplitContext { |
| ASS ass; |
| int current_section; |
| int field_number[FF_ARRAY_ELEMS(ass_sections)]; |
| int *field_order[FF_ARRAY_ELEMS(ass_sections)]; |
| }; |
| |
| |
| static uint8_t *realloc_section_array(ASSSplitContext *ctx) |
| { |
| const ASSSection *section = &ass_sections[ctx->current_section]; |
| int *count = (int *)((uint8_t *)&ctx->ass + section->offset_count); |
| void **section_ptr = (void **)((uint8_t *)&ctx->ass + section->offset); |
| uint8_t *tmp = av_realloc_array(*section_ptr, (*count+1), section->size); |
| if (!tmp) |
| return NULL; |
| *section_ptr = tmp; |
| tmp += *count * section->size; |
| memset(tmp, 0, section->size); |
| (*count)++; |
| return tmp; |
| } |
| |
| static inline int is_eol(char buf) |
| { |
| return buf == '\r' || buf == '\n' || buf == 0; |
| } |
| |
| static inline const char *skip_space(const char *buf) |
| { |
| while (*buf == ' ') |
| buf++; |
| return buf; |
| } |
| |
| static int *get_default_field_orders(const ASSSection *section, int *number) |
| { |
| int i; |
| int *order = av_malloc_array(FF_ARRAY_ELEMS(section->fields), sizeof(*order)); |
| |
| if (!order) |
| return NULL; |
| for (i = 0; section->fields[i].name; i++) |
| order[i] = i; |
| *number = i; |
| while (i < FF_ARRAY_ELEMS(section->fields)) |
| order[i++] = -1; |
| return order; |
| } |
| |
| static const char *ass_split_section(ASSSplitContext *ctx, const char *buf) |
| { |
| const ASSSection *section = &ass_sections[ctx->current_section]; |
| int *number = &ctx->field_number[ctx->current_section]; |
| int *order = ctx->field_order[ctx->current_section]; |
| int i, len; |
| |
| while (buf && *buf) { |
| if (buf[0] == '[') { |
| ctx->current_section = -1; |
| break; |
| } |
| if (buf[0] == ';' || (buf[0] == '!' && buf[1] == ':')) |
| goto next_line; // skip comments |
| |
| len = strcspn(buf, ":\r\n"); |
| if (buf[len] == ':' && |
| (!section->fields_header || strncmp(buf, section->fields_header, len))) { |
| for (i = 0; i < FF_ARRAY_ELEMS(ass_sections); i++) { |
| if (ass_sections[i].fields_header && |
| !strncmp(buf, ass_sections[i].fields_header, len)) { |
| ctx->current_section = i; |
| section = &ass_sections[ctx->current_section]; |
| number = &ctx->field_number[ctx->current_section]; |
| order = ctx->field_order[ctx->current_section]; |
| break; |
| } |
| } |
| } |
| if (section->format_header && !order) { |
| len = strlen(section->format_header); |
| if (!strncmp(buf, section->format_header, len) && buf[len] == ':') { |
| buf += len + 1; |
| while (!is_eol(*buf)) { |
| buf = skip_space(buf); |
| len = strcspn(buf, ", \r\n"); |
| if (av_reallocp_array(&order, (*number + 1), sizeof(*order)) != 0) |
| return NULL; |
| |
| order[*number] = -1; |
| for (i=0; section->fields[i].name; i++) |
| if (!strncmp(buf, section->fields[i].name, len)) { |
| order[*number] = i; |
| break; |
| } |
| (*number)++; |
| buf = skip_space(buf + len + (buf[len] == ',')); |
| } |
| ctx->field_order[ctx->current_section] = order; |
| goto next_line; |
| } |
| } |
| if (section->fields_header) { |
| len = strlen(section->fields_header); |
| if (!strncmp(buf, section->fields_header, len) && buf[len] == ':') { |
| uint8_t *ptr, *struct_ptr = realloc_section_array(ctx); |
| if (!struct_ptr) return NULL; |
| |
| /* No format header line found so far, assume default */ |
| if (!order) { |
| order = get_default_field_orders(section, number); |
| if (!order) |
| return NULL; |
| ctx->field_order[ctx->current_section] = order; |
| } |
| |
| buf += len + 1; |
| for (i=0; !is_eol(*buf) && i < *number; i++) { |
| int last = i == *number - 1; |
| buf = skip_space(buf); |
| len = strcspn(buf, last ? "\r\n" : ",\r\n"); |
| if (order[i] >= 0) { |
| ASSFieldType type = section->fields[order[i]].type; |
| ptr = struct_ptr + section->fields[order[i]].offset; |
| convert_func[type](ptr, buf, len); |
| } |
| buf += len; |
| if (!last && *buf) buf++; |
| buf = skip_space(buf); |
| } |
| } |
| } else { |
| len = strcspn(buf, ":\r\n"); |
| if (buf[len] == ':') { |
| for (i=0; section->fields[i].name; i++) |
| if (!strncmp(buf, section->fields[i].name, len)) { |
| ASSFieldType type = section->fields[i].type; |
| uint8_t *ptr = (uint8_t *)&ctx->ass + section->offset; |
| ptr += section->fields[i].offset; |
| buf = skip_space(buf + len + 1); |
| convert_func[type](ptr, buf, strcspn(buf, "\r\n")); |
| break; |
| } |
| } |
| } |
| next_line: |
| buf += strcspn(buf, "\n"); |
| buf += !!*buf; |
| } |
| return buf; |
| } |
| |
| static int ass_split(ASSSplitContext *ctx, const char *buf) |
| { |
| char c, section[16]; |
| int i; |
| |
| if (ctx->current_section >= 0) |
| buf = ass_split_section(ctx, buf); |
| |
| while (buf && *buf) { |
| if (sscanf(buf, "[%15[0-9A-Za-z+ ]]%c", section, &c) == 2) { |
| buf += strcspn(buf, "\n"); |
| buf += !!*buf; |
| for (i=0; i<FF_ARRAY_ELEMS(ass_sections); i++) |
| if (!strcmp(section, ass_sections[i].section)) { |
| ctx->current_section = i; |
| buf = ass_split_section(ctx, buf); |
| } |
| } else { |
| buf += strcspn(buf, "\n"); |
| buf += !!*buf; |
| } |
| } |
| return buf ? 0 : AVERROR_INVALIDDATA; |
| } |
| |
| ASSSplitContext *ff_ass_split(const char *buf) |
| { |
| ASSSplitContext *ctx = av_mallocz(sizeof(*ctx)); |
| if (!ctx) |
| return NULL; |
| if (buf && !memcmp(buf, "\xef\xbb\xbf", 3)) // Skip UTF-8 BOM header |
| buf += 3; |
| ctx->current_section = -1; |
| if (ass_split(ctx, buf) < 0) { |
| ff_ass_split_free(ctx); |
| return NULL; |
| } |
| return ctx; |
| } |
| |
| static void free_section(ASSSplitContext *ctx, const ASSSection *section) |
| { |
| uint8_t *ptr = (uint8_t *)&ctx->ass + section->offset; |
| int i, j, *count, c = 1; |
| |
| if (section->format_header) { |
| ptr = *(void **)ptr; |
| count = (int *)((uint8_t *)&ctx->ass + section->offset_count); |
| } else |
| count = &c; |
| |
| if (ptr) |
| for (i=0; i<*count; i++, ptr += section->size) |
| for (j=0; section->fields[j].name; j++) { |
| const ASSFields *field = §ion->fields[j]; |
| if (field->type == ASS_STR) |
| av_freep(ptr + field->offset); |
| } |
| *count = 0; |
| |
| if (section->format_header) |
| av_freep((uint8_t *)&ctx->ass + section->offset); |
| } |
| |
| ASSDialog *ff_ass_split_dialog(ASSSplitContext *ctx, const char *buf, |
| int cache, int *number) |
| { |
| ASSDialog *dialog = NULL; |
| int i, count; |
| if (!cache) |
| for (i=0; i<FF_ARRAY_ELEMS(ass_sections); i++) |
| if (!strcmp(ass_sections[i].section, "Events")) { |
| free_section(ctx, &ass_sections[i]); |
| break; |
| } |
| count = ctx->ass.dialogs_count; |
| if (ass_split(ctx, buf) == 0) |
| dialog = ctx->ass.dialogs + count; |
| if (number) |
| *number = ctx->ass.dialogs_count - count; |
| return dialog; |
| } |
| |
| void ff_ass_free_dialog(ASSDialog **dialogp) |
| { |
| ASSDialog *dialog = *dialogp; |
| if (!dialog) |
| return; |
| av_freep(&dialog->style); |
| av_freep(&dialog->name); |
| av_freep(&dialog->effect); |
| av_freep(&dialog->text); |
| av_freep(dialogp); |
| } |
| |
| ASSDialog *ff_ass_split_dialog2(ASSSplitContext *ctx, const char *buf) |
| { |
| int i; |
| static const ASSFields fields[] = { |
| {"ReadOrder", ASS_INT, offsetof(ASSDialog, readorder)}, |
| {"Layer", ASS_INT, offsetof(ASSDialog, layer) }, |
| {"Style", ASS_STR, offsetof(ASSDialog, style) }, |
| {"Name", ASS_STR, offsetof(ASSDialog, name) }, |
| {"MarginL", ASS_INT, offsetof(ASSDialog, margin_l) }, |
| {"MarginR", ASS_INT, offsetof(ASSDialog, margin_r) }, |
| {"MarginV", ASS_INT, offsetof(ASSDialog, margin_v) }, |
| {"Effect", ASS_STR, offsetof(ASSDialog, effect) }, |
| {"Text", ASS_STR, offsetof(ASSDialog, text) }, |
| }; |
| |
| ASSDialog *dialog = av_mallocz(sizeof(*dialog)); |
| if (!dialog) |
| return NULL; |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(fields); i++) { |
| size_t len; |
| const int last = i == FF_ARRAY_ELEMS(fields) - 1; |
| const ASSFieldType type = fields[i].type; |
| uint8_t *ptr = (uint8_t *)dialog + fields[i].offset; |
| buf = skip_space(buf); |
| len = last ? strlen(buf) : strcspn(buf, ","); |
| if (len >= INT_MAX) { |
| ff_ass_free_dialog(&dialog); |
| return NULL; |
| } |
| convert_func[type](ptr, buf, len); |
| buf += len; |
| if (*buf) buf++; |
| } |
| return dialog; |
| } |
| |
| void ff_ass_split_free(ASSSplitContext *ctx) |
| { |
| if (ctx) { |
| int i; |
| for (i=0; i<FF_ARRAY_ELEMS(ass_sections); i++) { |
| free_section(ctx, &ass_sections[i]); |
| av_freep(&(ctx->field_order[i])); |
| } |
| av_free(ctx); |
| } |
| } |
| |
| |
| int ff_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, |
| const char *buf) |
| { |
| const char *text = NULL; |
| char new_line[2]; |
| int text_len = 0; |
| |
| while (buf && *buf) { |
| if (text && callbacks->text && |
| (sscanf(buf, "\\%1[nN]", new_line) == 1 || |
| !strncmp(buf, "{\\", 2))) { |
| callbacks->text(priv, text, text_len); |
| text = NULL; |
| } |
| if (sscanf(buf, "\\%1[nN]", new_line) == 1) { |
| if (callbacks->new_line) |
| callbacks->new_line(priv, new_line[0] == 'N'); |
| buf += 2; |
| } else if (!strncmp(buf, "{\\", 2)) { |
| buf++; |
| while (*buf == '\\') { |
| char style[2], c[2], sep[2], c_num[2] = "0", tmp[128] = {0}; |
| unsigned int color = 0xFFFFFFFF; |
| int len, size = -1, an = -1, alpha = -1; |
| int x1, y1, x2, y2, t1 = -1, t2 = -1; |
| if (sscanf(buf, "\\%1[bisu]%1[01\\}]%n", style, c, &len) > 1) { |
| int close = c[0] == '0' ? 1 : c[0] == '1' ? 0 : -1; |
| len += close != -1; |
| if (callbacks->style) |
| callbacks->style(priv, style[0], close); |
| } else if (sscanf(buf, "\\c%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\c&H%X&%1[\\}]%n", &color, sep, &len) > 1 || |
| sscanf(buf, "\\%1[1234]c%1[\\}]%n", c_num, sep, &len) > 1 || |
| sscanf(buf, "\\%1[1234]c&H%X&%1[\\}]%n", c_num, &color, sep, &len) > 2) { |
| if (callbacks->color) |
| callbacks->color(priv, color, c_num[0] - '0'); |
| } else if (sscanf(buf, "\\alpha%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\alpha&H%2X&%1[\\}]%n", &alpha, sep, &len) > 1 || |
| sscanf(buf, "\\%1[1234]a%1[\\}]%n", c_num, sep, &len) > 1 || |
| sscanf(buf, "\\%1[1234]a&H%2X&%1[\\}]%n", c_num, &alpha, sep, &len) > 2) { |
| if (callbacks->alpha) |
| callbacks->alpha(priv, alpha, c_num[0] - '0'); |
| } else if (sscanf(buf, "\\fn%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\fn%127[^\\}]%1[\\}]%n", tmp, sep, &len) > 1) { |
| if (callbacks->font_name) |
| callbacks->font_name(priv, tmp[0] ? tmp : NULL); |
| } else if (sscanf(buf, "\\fs%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\fs%u%1[\\}]%n", &size, sep, &len) > 1) { |
| if (callbacks->font_size) |
| callbacks->font_size(priv, size); |
| } else if (sscanf(buf, "\\a%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\a%2u%1[\\}]%n", &an, sep, &len) > 1 || |
| sscanf(buf, "\\an%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\an%1u%1[\\}]%n", &an, sep, &len) > 1) { |
| if (an != -1 && buf[2] != 'n') |
| an = (an&3) + (an&4 ? 6 : an&8 ? 3 : 0); |
| if (callbacks->alignment) |
| callbacks->alignment(priv, an); |
| } else if (sscanf(buf, "\\r%1[\\}]%n", sep, &len) > 0 || |
| sscanf(buf, "\\r%127[^\\}]%1[\\}]%n", tmp, sep, &len) > 1) { |
| if (callbacks->cancel_overrides) |
| callbacks->cancel_overrides(priv, tmp); |
| } else if (sscanf(buf, "\\move(%d,%d,%d,%d)%1[\\}]%n", &x1, &y1, &x2, &y2, sep, &len) > 4 || |
| sscanf(buf, "\\move(%d,%d,%d,%d,%d,%d)%1[\\}]%n", &x1, &y1, &x2, &y2, &t1, &t2, sep, &len) > 6) { |
| if (callbacks->move) |
| callbacks->move(priv, x1, y1, x2, y2, t1, t2); |
| } else if (sscanf(buf, "\\pos(%d,%d)%1[\\}]%n", &x1, &y1, sep, &len) > 2) { |
| if (callbacks->move) |
| callbacks->move(priv, x1, y1, x1, y1, -1, -1); |
| } else if (sscanf(buf, "\\org(%d,%d)%1[\\}]%n", &x1, &y1, sep, &len) > 2) { |
| if (callbacks->origin) |
| callbacks->origin(priv, x1, y1); |
| } else { |
| len = strcspn(buf+1, "\\}") + 2; /* skip unknown code */ |
| } |
| buf += len - 1; |
| } |
| if (*buf++ != '}') |
| return AVERROR_INVALIDDATA; |
| } else { |
| if (!text) { |
| text = buf; |
| text_len = 1; |
| } else |
| text_len++; |
| buf++; |
| } |
| } |
| if (text && callbacks->text) |
| callbacks->text(priv, text, text_len); |
| if (callbacks->end) |
| callbacks->end(priv); |
| return 0; |
| } |
| |
| ASSStyle *ff_ass_style_get(ASSSplitContext *ctx, const char *style) |
| { |
| ASS *ass = &ctx->ass; |
| int i; |
| |
| if (!style || !*style) |
| style = "Default"; |
| for (i=0; i<ass->styles_count; i++) |
| if (ass->styles[i].name && !strcmp(ass->styles[i].name, style)) |
| return ass->styles + i; |
| return NULL; |
| } |
