diff options
Diffstat (limited to 'ffmpeg1/libavcodec/samidec.c')
| -rw-r--r-- | ffmpeg1/libavcodec/samidec.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ffmpeg1/libavcodec/samidec.c b/ffmpeg1/libavcodec/samidec.c deleted file mode 100644 index 39ac608..0000000 --- a/ffmpeg1/libavcodec/samidec.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (c) 2012 Clément Bœsch - * - * 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 - */ - -/** - * @file - * SAMI subtitle decoder - * @see http://msdn.microsoft.com/en-us/library/ms971327.aspx - */ - -#include "ass.h" -#include "libavutil/avstring.h" -#include "libavutil/bprint.h" - -typedef struct { - AVBPrint source; - AVBPrint content; - AVBPrint full; -} SAMIContext; - -static int sami_paragraph_to_ass(AVCodecContext *avctx, const char *src) -{ - SAMIContext *sami = avctx->priv_data; - int ret = 0; - char *tag = NULL; - char *dupsrc = av_strdup(src); - char *p = dupsrc; - - av_bprint_clear(&sami->content); - for (;;) { - char *saveptr = NULL; - int prev_chr_is_space = 0; - AVBPrint *dst = &sami->content; - - /* parse & extract paragraph tag */ - p = av_stristr(p, "<P"); - if (!p) - break; - if (p[2] != '>' && !av_isspace(p[2])) { // avoid confusion with tags such as <PRE> - p++; - continue; - } - if (dst->len) // add a separator with the previous paragraph if there was one - av_bprintf(dst, "\\N"); - tag = av_strtok(p, ">", &saveptr); - if (!tag || !saveptr) - break; - p = saveptr; - - /* check if the current paragraph is the "source" (speaker name) */ - if (av_stristr(tag, "ID=Source") || av_stristr(tag, "ID=\"Source\"")) { - dst = &sami->source; - av_bprint_clear(dst); - } - - /* if empty event -> skip subtitle */ - while (av_isspace(*p)) - p++; - if (!strncmp(p, " ", 6)) { - ret = -1; - goto end; - } - - /* extract the text, stripping most of the tags */ - while (*p) { - if (*p == '<') { - if (!av_strncasecmp(p, "<P", 2) && (p[2] == '>' || av_isspace(p[2]))) - break; - if (!av_strncasecmp(p, "<BR", 3)) - av_bprintf(dst, "\\N"); - p++; - while (*p && *p != '>') - p++; - if (!*p) - break; - if (*p == '>') - p++; - } - if (!av_isspace(*p)) - av_bprint_chars(dst, *p, 1); - else if (!prev_chr_is_space) - av_bprint_chars(dst, ' ', 1); - prev_chr_is_space = av_isspace(*p); - p++; - } - } - - av_bprint_clear(&sami->full); - if (sami->source.len) - av_bprintf(&sami->full, "{\\i1}%s{\\i0}\\N", sami->source.str); - av_bprintf(&sami->full, "%s\r\n", sami->content.str); - -end: - av_free(dupsrc); - return ret; -} - -static int sami_decode_frame(AVCodecContext *avctx, - void *data, int *got_sub_ptr, AVPacket *avpkt) -{ - AVSubtitle *sub = data; - const char *ptr = avpkt->data; - SAMIContext *sami = avctx->priv_data; - - if (ptr && avpkt->size > 0 && !sami_paragraph_to_ass(avctx, ptr)) { - int ts_start = av_rescale_q(avpkt->pts, avctx->time_base, (AVRational){1,100}); - int ts_duration = avpkt->duration != -1 ? - av_rescale_q(avpkt->duration, avctx->time_base, (AVRational){1,100}) : -1; - ff_ass_add_rect(sub, sami->full.str, ts_start, ts_duration, 0); - } - *got_sub_ptr = sub->num_rects > 0; - return avpkt->size; -} - -static av_cold int sami_init(AVCodecContext *avctx) -{ - SAMIContext *sami = avctx->priv_data; - av_bprint_init(&sami->source, 0, 2048); - av_bprint_init(&sami->content, 0, 2048); - av_bprint_init(&sami->full, 0, 2048); - return ff_ass_subtitle_header_default(avctx); -} - -static av_cold int sami_close(AVCodecContext *avctx) -{ - SAMIContext *sami = avctx->priv_data; - av_bprint_finalize(&sami->source, NULL); - av_bprint_finalize(&sami->content, NULL); - av_bprint_finalize(&sami->full, NULL); - return 0; -} - -AVCodec ff_sami_decoder = { - .name = "sami", - .long_name = NULL_IF_CONFIG_SMALL("SAMI subtitle"), - .type = AVMEDIA_TYPE_SUBTITLE, - .id = AV_CODEC_ID_SAMI, - .priv_data_size = sizeof(SAMIContext), - .init = sami_init, - .close = sami_close, - .decode = sami_decode_frame, -}; |