diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/dvbsub_parser.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/dvbsub_parser.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/contrib/ffmpeg/libavcodec/dvbsub_parser.c b/contrib/ffmpeg/libavcodec/dvbsub_parser.c deleted file mode 100644 index 312c243bf..000000000 --- a/contrib/ffmpeg/libavcodec/dvbsub_parser.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * DVB subtitle parser for FFmpeg - * Copyright (c) 2005 Ian Caulfield. - * - * 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 "dsputil.h" -#include "bitstream.h" - -//#define DEBUG -//#define DEBUG_PACKET_CONTENTS - -/* Parser (mostly) copied from dvdsub.c */ - -#define PARSE_BUF_SIZE (65536) - - -/* parser definition */ -typedef struct DVBSubParseContext { - uint8_t *packet_buf; - int packet_start; - int packet_index; - int in_packet; -} DVBSubParseContext; - -static int dvbsub_parse_init(AVCodecParserContext *s) -{ - DVBSubParseContext *pc = s->priv_data; - pc->packet_buf = av_malloc(PARSE_BUF_SIZE); - - return 0; -} - -static int dvbsub_parse(AVCodecParserContext *s, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - DVBSubParseContext *pc = s->priv_data; - uint8_t *p, *p_end; - int len, buf_pos = 0; - -#ifdef DEBUG - av_log(avctx, AV_LOG_INFO, "DVB parse packet pts=%"PRIx64", lpts=%"PRIx64", cpts=%"PRIx64":\n", - s->pts, s->last_pts, s->cur_frame_pts[s->cur_frame_start_index]); -#endif - -#ifdef DEBUG_PACKET_CONTENTS - int i; - - for (i=0; i < buf_size; i++) - { - av_log(avctx, AV_LOG_INFO, "%02x ", buf[i]); - if (i % 16 == 15) - av_log(avctx, AV_LOG_INFO, "\n"); - } - - if (i % 16 != 0) - av_log(avctx, AV_LOG_INFO, "\n"); - -#endif - - *poutbuf = NULL; - *poutbuf_size = 0; - - s->fetch_timestamp = 1; - - if (s->last_pts != s->pts && s->last_pts != AV_NOPTS_VALUE) /* Start of a new packet */ - { - if (pc->packet_index != pc->packet_start) - { -#ifdef DEBUG - av_log(avctx, AV_LOG_INFO, "Discarding %d bytes\n", - pc->packet_index - pc->packet_start); -#endif - } - - pc->packet_start = 0; - pc->packet_index = 0; - - if (buf_size < 2 || buf[0] != 0x20 || buf[1] != 0x00) { -#ifdef DEBUG - av_log(avctx, AV_LOG_INFO, "Bad packet header\n"); -#endif - return -1; - } - - buf_pos = 2; - - pc->in_packet = 1; - } else { - if (pc->packet_start != 0) - { - if (pc->packet_index != pc->packet_start) - { - memmove(pc->packet_buf, pc->packet_buf + pc->packet_start, - pc->packet_index - pc->packet_start); - - pc->packet_index -= pc->packet_start; - pc->packet_start = 0; - } else { - pc->packet_start = 0; - pc->packet_index = 0; - } - } - } - - if (buf_size - buf_pos + pc->packet_index > PARSE_BUF_SIZE) - return -1; - -/* if not currently in a packet, discard data */ - if (pc->in_packet == 0) - return buf_size; - - memcpy(pc->packet_buf + pc->packet_index, buf + buf_pos, buf_size - buf_pos); - pc->packet_index += buf_size - buf_pos; - - p = pc->packet_buf; - p_end = pc->packet_buf + pc->packet_index; - - while (p < p_end) - { - if (*p == 0x0f) - { - if (p + 6 <= p_end) - { - len = AV_RB16(p + 4); - - if (p + len + 6 <= p_end) - { - *poutbuf_size += len + 6; - - p += len + 6; - } else - break; - } else - break; - } else if (*p == 0xff) { - if (p + 1 < p_end) - { -#ifdef DEBUG - av_log(avctx, AV_LOG_INFO, "Junk at end of packet\n"); -#endif - } - pc->packet_index = p - pc->packet_buf; - pc->in_packet = 0; - break; - } else { - av_log(avctx, AV_LOG_ERROR, "Junk in packet\n"); - - pc->packet_index = p - pc->packet_buf; - pc->in_packet = 0; - break; - } - } - - if (*poutbuf_size > 0) - { - *poutbuf = pc->packet_buf; - pc->packet_start = *poutbuf_size; - } - - if (s->last_pts == AV_NOPTS_VALUE) - s->last_pts = s->pts; - - return buf_size; -} - -static void dvbsub_parse_close(AVCodecParserContext *s) -{ - DVBSubParseContext *pc = s->priv_data; - av_freep(&pc->packet_buf); -} - -AVCodecParser dvbsub_parser = { - { CODEC_ID_DVB_SUBTITLE }, - sizeof(DVBSubParseContext), - dvbsub_parse_init, - dvbsub_parse, - dvbsub_parse_close, -}; |