/* * Copyright (C) 2000-2003 the xine project * * This file is part of xine, a free video player. * * xine is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * xine 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * * $Id: demux_matroska.c,v 1.24 2004/04/26 23:33:35 tmattern Exp $ * * demultiplexer for matroska streams * * TODO: * more codecs * metadata * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #define LOG_MODULE "demux_matroska" #define LOG_VERBOSE /* #define LOG */ #include "xine_internal.h" #include "xineutils.h" #include "demux.h" #include "bswap.h" #include "ebml.h" #include "matroska.h" #define NUM_PREVIEW_BUFFERS 10 #define MAX_STREAMS 128 #define MAX_FRAMES 32 #define WRAP_THRESHOLD 90000 typedef struct { int track_num; off_t *pos; uint64_t *timecode; int num_entries; } matroska_index_t; typedef struct { demux_plugin_t demux_plugin; xine_stream_t *stream; input_plugin_t *input; int status; ebml_parser_t *ebml; /* segment element */ ebml_elem_t segment; uint64_t timecode_scale; int duration; /* in millis */ int preview_sent; int preview_mode; /* meta seek info */ off_t seekhead_pos; off_t info_pos; off_t tracks_pos; off_t chapters_pos; off_t cues_pos; off_t attachments_pos; off_t tags_pos; int has_seekhead; int seekhead_handled; /* seek info */ matroska_index_t *indexes; int num_indexes; int first_cluster_found; int skip_to_timecode; int skip_for_track; /* tracks */ int num_tracks; int num_video_tracks; int num_audio_tracks; int num_sub_tracks; matroska_track_t *tracks[MAX_STREAMS]; /* block */ uint8_t *block_data; int block_data_size; /* current tracks */ matroska_track_t *video_track; /* to remove */ matroska_track_t *audio_track; /* to remove */ matroska_track_t *sub_track; /* to remove */ int send_newpts; int buf_flag_seek; } demux_matroska_t ; typedef struct { demux_class_t demux_class; /* class-wide, global variables here */ xine_t *xine; } demux_matroska_class_t; static void check_newpts (demux_matroska_t *this, int64_t pts, matroska_track_t *track) { int64_t diff; if ((track->track_type == MATROSKA_TRACK_VIDEO) || (track->track_type == MATROSKA_TRACK_AUDIO)) { diff = pts - track->last_pts; if (pts && (this->send_newpts || (track->last_pts && abs(diff)>WRAP_THRESHOLD)) ) { int i; lprintf ("sending newpts %lld, diff %lld, track %d\n", pts, diff, track->track_num); if (this->buf_flag_seek) { _x_demux_control_newpts(this->stream, pts, BUF_FLAG_SEEK); this->buf_flag_seek = 0; } else { _x_demux_control_newpts(this->stream, pts, 0); } this->send_newpts = 0; for (i = 0; i < this->num_tracks; i++) { this->tracks[i]->last_pts = 0; } } else { #ifdef LOG if (pts) lprintf ("diff %lld, track %d\n", diff, track->track_num); #endif } if (pts) track->last_pts = pts; } } static int parse_info(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; double duration = 0.0; /* in matroska unit */ while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_I_TIMECODESCALE: lprintf("timecode_scale\n"); if (!ebml_read_uint(ebml, &elem, &this->timecode_scale)) return 0; break; case MATROSKA_ID_I_DURATION: { lprintf("duration\n"); if (!ebml_read_float(ebml, &elem, &duration)) return 0; } break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } if (this->timecode_scale == 0) { this->timecode_scale = 1000000; } this->duration = (int)(duration * (double)this->timecode_scale / 1000000.0); lprintf("timecode_scale: %lld\n", this->timecode_scale); lprintf("duration: %d\n", this->duration); return 1; } static int parse_video_track (demux_matroska_t *this, matroska_video_track_t *vt) { ebml_parser_t *ebml = this->ebml; int next_level = 4; uint64_t val; while (next_level == 4) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_TV_FLAGINTERLACED: lprintf("MATROSKA_ID_TV_FLAGINTERLACED\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; vt->flag_interlaced = val; break; case MATROSKA_ID_TV_PIXELWIDTH: lprintf("MATROSKA_ID_TV_PIXELWIDTH\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; vt->pixel_width = val; break; case MATROSKA_ID_TV_PIXELHEIGHT: lprintf("MATROSKA_ID_TV_PIXELHEIGHT\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; vt->pixel_height = val; break; case MATROSKA_ID_TV_VIDEODISPLAYWIDTH: lprintf("MATROSKA_ID_TV_VIDEODISPLAYWIDTH\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; vt->display_width = val; break; case MATROSKA_ID_TV_VIDEODISPLAYHEIGHT: lprintf("MATROSKA_ID_TV_VIDEODISPLAYHEIGHT\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; vt->display_height = val; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_audio_track (demux_matroska_t *this, matroska_audio_track_t *at) { ebml_parser_t *ebml = this->ebml; int next_level = 4; while (next_level == 4) { ebml_elem_t elem; uint64_t val; double fval; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_TA_SAMPLINGFREQUENCY: lprintf("MATROSKA_ID_TA_SAMPLINGFREQUENCY\n"); if (!ebml_read_float(ebml, &elem, &fval)) return 0; at->sampling_freq = (int)fval; break; case MATROSKA_ID_TA_OUTPUTSAMPLINGFREQUENCY: lprintf("MATROSKA_ID_TA_OUTPUTSAMPLINGFREQUENCY\n"); if (!ebml_read_float(ebml, &elem, &fval)) return 0; at->output_sampling_freq = (int)fval; break; case MATROSKA_ID_TA_CHANNELS: lprintf("MATROSKA_ID_TA_CHANNELS\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; at->channels = val; break; case MATROSKA_ID_TA_BITDEPTH: lprintf("MATROSKA_ID_TA_BITDEPTH\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; at->bits_per_sample = val; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static void init_codec_video(demux_matroska_t *this, matroska_track_t *track) { buf_element_t *buf; buf = track->fifo->buffer_pool_alloc (track->fifo); buf->decoder_flags = BUF_FLAG_HEADER | BUF_FLAG_STDHEADER | BUF_FLAG_FRAME_END; buf->type = track->buf_type; buf->pts = 0; if (track->codec_private_len > buf->max_size) { buf->size = buf->max_size; } else { buf->size = track->codec_private_len; } if (buf->size) xine_fast_memcpy (buf->content, track->codec_private, buf->size); else buf->content = NULL; if(track->default_duration) { buf->decoder_flags |= BUF_FLAG_FRAMERATE; buf->decoder_info[0] = (int64_t)track->default_duration * (int64_t)90 / (int64_t)1000000; } if(track->video_track && track->video_track->display_width && track->video_track->display_height) { buf->decoder_flags |= BUF_FLAG_ASPECT; buf->decoder_info[1] = track->video_track->display_width; buf->decoder_info[2] = track->video_track->display_height; } track->fifo->put (track->fifo, buf); } static void init_codec_audio(demux_matroska_t *this, matroska_track_t *track) { buf_element_t *buf; buf = track->fifo->buffer_pool_alloc (track->fifo); /* default param */ buf->decoder_info[0] = 0; buf->decoder_info[1] = 44100; buf->decoder_info[2] = 16; buf->decoder_info[3] = 2; /* track param */ if (track->audio_track) { if (track->audio_track->sampling_freq) buf->decoder_info[1] = track->audio_track->sampling_freq; if (track->audio_track->bits_per_sample) buf->decoder_info[2] = track->audio_track->bits_per_sample; if (track->audio_track->channels) buf->decoder_info[3] = track->audio_track->channels; } lprintf("%d Hz, %d bits, %d channels\n", buf->decoder_info[1], buf->decoder_info[2], buf->decoder_info[3]); if (track->codec_private_len > buf->max_size) { buf->size = buf->max_size; } else { buf->size = track->codec_private_len; } if (buf->size) xine_fast_memcpy (buf->content, track->codec_private, buf->size); else buf->content = NULL; buf->decoder_flags = BUF_FLAG_HEADER | BUF_FLAG_STDHEADER | BUF_FLAG_FRAME_END; buf->type = track->buf_type; buf->pts = 0; track->fifo->put (track->fifo, buf); } static void init_codec_real(demux_matroska_t *this, matroska_track_t * track) { buf_element_t *buf; buf = track->fifo->buffer_pool_alloc (track->fifo); buf->decoder_flags = BUF_FLAG_HEADER | BUF_FLAG_FRAME_END; buf->type = track->buf_type; buf->pts = 0; if (track->codec_private_len > buf->max_size) { buf->size = buf->max_size; } else { buf->size = track->codec_private_len; } if (buf->size) xine_fast_memcpy (buf->content, track->codec_private, buf->size); else buf->content = NULL; if(track->default_duration) { buf->decoder_flags |= BUF_FLAG_FRAMERATE; buf->decoder_info[0] = (int64_t)track->default_duration * (int64_t)90 / (int64_t)1000000; } if(track->video_track && track->video_track->display_width && track->video_track->display_height) { buf->decoder_flags |= BUF_FLAG_ASPECT; buf->decoder_info[1] = track->video_track->display_width; buf->decoder_info[2] = track->video_track->display_height; } track->fifo->put (track->fifo, buf); } static void init_codec_vorbis(demux_matroska_t *this, matroska_track_t *track) { buf_element_t *buf; uint8_t nb_lace; int frame[3]; int i; uint8_t *data; nb_lace = track->codec_private[0]; if (nb_lace != 2) return; frame[0] = track->codec_private[1]; frame[1] = track->codec_private[2]; frame[2] = track->codec_private_len - frame[0] - frame[1] - 3; data = track->codec_private + 3; for (i = 0; i < 3; i++) { buf = track->fifo->buffer_pool_alloc (track->fifo); buf->decoder_flags = BUF_FLAG_HEADER; if (i == 2) buf->decoder_flags |= BUF_FLAG_FRAME_END; buf->type = track->buf_type; buf->pts = 0; buf->size = frame[i]; xine_fast_memcpy (buf->content, data, buf->size); data += buf->size; track->fifo->put (track->fifo, buf); } } static void handle_realvideo (demux_plugin_t *this_gen, matroska_track_t *track, int decoder_flags, uint8_t *data, int data_len, int64_t data_pts, int data_duration, off_t input_pos, off_t input_length, int input_time) { demux_matroska_t *this = (demux_matroska_t *) this_gen; int chunks; int chunk_tab_size; chunks = data[0]; chunk_tab_size = (chunks + 1) * 8; lprintf("chunks: %d, chunk_tab_size: %d\n", chunks, chunk_tab_size); _x_demux_send_data(track->fifo, data + chunk_tab_size + 1, data_len - chunk_tab_size - 1, data_pts, track->buf_type, decoder_flags, input_pos, input_length, input_time, this->duration, 0); /* sends the fragment table */ { buf_element_t *buf; buf = track->fifo->buffer_pool_alloc(track->fifo); buf->decoder_flags = decoder_flags | BUF_FLAG_SPECIAL | BUF_FLAG_FRAMERATE; buf->decoder_info[0] = data_duration; buf->decoder_info[1] = BUF_SPECIAL_RV_CHUNK_TABLE; buf->decoder_info[2] = chunks; buf->decoder_info_ptr[2] = buf->content; buf->size = 0; buf->type = track->buf_type; xine_fast_memcpy(buf->decoder_info_ptr[2], data + 1, chunk_tab_size); track->fifo->put(track->fifo, buf); } } static void handle_sub_ssa (demux_plugin_t *this_gen, matroska_track_t *track, int decoder_flags, uint8_t *data, int data_len, int64_t data_pts, int data_duration, off_t input_pos, off_t input_length, int input_time) { buf_element_t *buf; uint32_t *val; int commas = 0; int lines = 1; char last_char = 0; char *dest; int dest_len; int skip = 0; lprintf ("pts: %lld, duration: %d\n", data_pts, data_duration); /* skip ',' */ while (data_len && (commas < 8)) { if (*data == ',') commas++; data++; data_len--; } buf = track->fifo->buffer_pool_alloc(track->fifo); buf->type = track->buf_type; buf->decoder_flags = decoder_flags; val = (uint32_t *)buf->content; *val++ = data_pts / 90; /* start time */ *val++ = (data_pts + data_duration) / 90; /* end time */ dest = buf->content + 8; dest_len = buf->max_size - 8; while (data_len && dest_len) { if (skip) { if (*data == '}') skip--; else if (*data == '{') skip++; } else { if ((last_char == '\\') && ((*data == 'n') || (*data == 'N'))) { lines++; *dest = '\n'; dest++; dest_len--; } else { if (*data != '\\') { if (*data == '{') { skip++; } else { *dest = *data; dest++; dest_len--; } } } } last_char = *data; data++; data_len--; } if (dest_len) { *dest = '\0'; dest++; dest_len--; buf->size = dest - (char *)buf->content; buf->extra_info->input_pos = input_pos; buf->extra_info->input_length = input_length; buf->extra_info->input_time = input_time; track->fifo->put(track->fifo, buf); } else { buf->free_buffer(buf); } } static void handle_sub_utf8 (demux_plugin_t *this_gen, matroska_track_t *track, int decoder_flags, uint8_t *data, int data_len, int64_t data_pts, int data_duration, off_t input_pos, off_t input_length, int input_time) { buf_element_t *buf; uint32_t *val; buf = track->fifo->buffer_pool_alloc(track->fifo); buf->size = data_len + 9; /* 2 uint32_t + '\0' */ buf->decoder_flags = decoder_flags; if (buf->max_size >= buf->size) { buf->type = track->buf_type; val = (uint32_t *)buf->content; *val++ = data_pts / 90; /* start time */ *val++ = (data_pts + data_duration) / 90; /* end time */ xine_fast_memcpy(buf->content + 8, data, data_len); buf->content[8 + data_len] = '\0'; lprintf("sub: %s\n", buf->content + 8); buf->extra_info->input_pos = input_pos; buf->extra_info->input_length = input_length; buf->extra_info->input_time = input_time; track->fifo->put(track->fifo, buf); } else { buf->free_buffer(buf); } } static int parse_track_entry(demux_matroska_t *this, matroska_track_t *track) { ebml_parser_t *ebml = this->ebml; int next_level = 3; while (next_level == 3) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_TR_NUMBER: { uint64_t num; lprintf("TrackNumber\n"); if (!ebml_read_uint(ebml, &elem, &num)) return 0; track->track_num = num; } break; case MATROSKA_ID_TR_TYPE: { uint64_t num; lprintf("TrackType\n"); if (!ebml_read_uint(ebml, &elem, &num)) return 0; track->track_type = num; } break; case MATROSKA_ID_TR_CODECID: { char *codec_id = malloc (elem.len + 1); lprintf("CodecID\n"); if (!ebml_read_ascii(ebml, &elem, codec_id)) return 0; codec_id[elem.len] = '\0'; track->codec_id = codec_id; } break; case MATROSKA_ID_TR_CODECPRIVATE: { char *codec_private = malloc (elem.len); lprintf("CodecPrivate\n"); if (!ebml_read_binary(ebml, &elem, codec_private)) return 0; track->codec_private = codec_private; track->codec_private_len = elem.len; } break; case MATROSKA_ID_TR_LANGUAGE: { char *language = malloc (elem.len + 1); lprintf("Language\n"); if (!ebml_read_ascii(ebml, &elem, language)) return 0; language[elem.len] = '\0'; track->language = language; } break; case MATROSKA_ID_TV: lprintf("Video\n"); if (track->video_track) return 1; track->video_track = (matroska_video_track_t *)xine_xmalloc(sizeof(matroska_video_track_t)); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_video_track(this, track->video_track)) return 0; break; case MATROSKA_ID_TA: lprintf("Audio\n"); if (track->audio_track) return 1; track->audio_track = (matroska_audio_track_t *)xine_xmalloc(sizeof(matroska_audio_track_t)); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_audio_track(this, track->audio_track)) return 0; break; case MATROSKA_ID_TR_FLAGDEFAULT: { uint64_t val; lprintf("Default\n"); if (!ebml_read_uint(ebml, &elem, &val)) return 0; track->default_flag = (int)val; } break; case MATROSKA_ID_TR_DEFAULTDURATION: { uint64_t val; if (!ebml_read_uint(ebml, &elem, &val)) return 0; track->default_duration = val; lprintf("Default Duration: %lld\n", track->default_duration); } break; case MATROSKA_ID_TR_UID: case MATROSKA_ID_TR_FLAGENABLED: case MATROSKA_ID_TR_FLAGLACING: case MATROSKA_ID_TR_MINCACHE: case MATROSKA_ID_TR_MAXCACHE: case MATROSKA_ID_TR_TIMECODESCALE: case MATROSKA_ID_TR_NAME: case MATROSKA_ID_TR_CODECNAME: case MATROSKA_ID_TR_CODECSETTINGS: case MATROSKA_ID_TR_CODECINFOURL: case MATROSKA_ID_TR_CODECDOWNLOADURL: case MATROSKA_ID_TR_CODECDECODEALL: case MATROSKA_ID_TR_OVERLAY: default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) { return 0; } } next_level = ebml_get_next_level(ebml, &elem); } xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: Track %d, %s %s\n", track->track_num, (track->codec_id ? track->codec_id : ""), (track->language ? track->language : "")); if (track->codec_id) { void (*init_codec)(demux_matroska_t *, matroska_track_t *) = NULL; if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_VFW_FOURCC)) { xine_bmiheader *bih; lprintf("MATROSKA_CODEC_ID_V_VFW_FOURCC\n"); bih = (xine_bmiheader*)track->codec_private; _x_bmiheader_le2me(bih); track->buf_type = _x_fourcc_to_buf_video(bih->biCompression); init_codec = init_codec_video; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_UNCOMPRESSED)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MPEG4_SP)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MPEG4_ASP)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MPEG4_AP)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MSMPEG4V3)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MPEG1)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MPEG2)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_REAL_RV10)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_REAL_RV20)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_REAL_RV30)) { lprintf("MATROSKA_CODEC_ID_V_REAL_RV30\n"); track->buf_type = BUF_VIDEO_RV30; track->handle_content = handle_realvideo; init_codec = init_codec_real; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_REAL_RV40)) { lprintf("MATROSKA_CODEC_ID_V_REAL_RV40\n"); track->buf_type = BUF_VIDEO_RV40; track->handle_content = handle_realvideo; init_codec = init_codec_real; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_V_MJPEG)) { } else if ((!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_MPEG1_L1)) || (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_MPEG1_L2)) || (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_MPEG1_L3))) { lprintf("MATROSKA_CODEC_ID_A_MPEG1\n"); track->buf_type = BUF_AUDIO_MPEG; init_codec = init_codec_audio; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_PCM_INT_BE)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_PCM_INT_LE)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_PCM_FLOAT)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_AC3)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_DTS)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_VORBIS)) { lprintf("MATROSKA_CODEC_ID_A_VORBIS\n"); track->buf_type = BUF_AUDIO_VORBIS; init_codec = init_codec_vorbis; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_ACM)) { } else if (!strncmp(track->codec_id, MATROSKA_CODEC_ID_A_AAC, sizeof(MATROSKA_CODEC_ID_A_AAC - 1))) { lprintf("MATROSKA_CODEC_ID_A_AAC\n"); track->buf_type = BUF_AUDIO_AAC; init_codec = init_codec_audio; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_14_4)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_28_8)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_COOK)) { lprintf("MATROSKA_CODEC_ID_A_REAL_COOK\n"); track->buf_type = BUF_AUDIO_COOK; init_codec = init_codec_real; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_SIPR)) { lprintf("MATROSKA_CODEC_ID_A_REAL_SIPR\n"); track->buf_type = BUF_AUDIO_SIPRO; init_codec = init_codec_real; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_RALF)) { } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_A_REAL_ATRC)) { lprintf("MATROSKA_CODEC_ID_A_REAL_ATRC\n"); track->buf_type = BUF_AUDIO_ATRK; init_codec = init_codec_real; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_S_TEXT_UTF8) || !strcmp(track->codec_id, MATROSKA_CODEC_ID_S_UTF8)) { lprintf("MATROSKA_CODEC_ID_S_TEXT_UTF8\n"); track->buf_type = BUF_SPU_OGM; track->handle_content = handle_sub_utf8; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_S_TEXT_SSA) || !strcmp(track->codec_id, MATROSKA_CODEC_ID_S_SSA)) { lprintf("MATROSKA_CODEC_ID_S_TEXT_SSA\n"); track->buf_type = BUF_SPU_OGM; track->handle_content = handle_sub_ssa; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_S_TEXT_ASS) || !strcmp(track->codec_id, MATROSKA_CODEC_ID_S_ASS)) { lprintf("MATROSKA_CODEC_ID_S_TEXT_ASS\n"); track->buf_type = BUF_SPU_OGM; track->handle_content = handle_sub_ssa; } else if (!strcmp(track->codec_id, MATROSKA_CODEC_ID_S_TEXT_USF)) { lprintf("MATROSKA_CODEC_ID_S_TEXT_USF\n"); track->buf_type = BUF_SPU_OGM; track->handle_content = handle_sub_utf8; } else { lprintf("unknown codec\n"); } if (track->buf_type) { switch(track->track_type) { case MATROSKA_TRACK_VIDEO: track->fifo = this->stream->video_fifo; track->buf_type |= this->num_video_tracks; this->num_video_tracks++; break; case MATROSKA_TRACK_AUDIO: track->fifo = this->stream->audio_fifo; track->buf_type |= this->num_audio_tracks; this->num_audio_tracks++; break; case MATROSKA_TRACK_SUBTITLE: track->fifo = this->stream->video_fifo; track->buf_type |= this->num_sub_tracks; this->num_sub_tracks++; break; case MATROSKA_TRACK_COMPLEX: case MATROSKA_TRACK_LOGO: case MATROSKA_TRACK_CONTROL: break; } if (init_codec) init_codec(this, track); } } return 1; } static int parse_tracks(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_TR_ENTRY: { /* alloc and initialize a track with 0 */ this->tracks[this->num_tracks] = xine_xmalloc(sizeof(matroska_track_t)); lprintf("TrackEntry\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_track_entry(this, this->tracks[this->num_tracks])) return 0; this->num_tracks++; } break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_chapters(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_cue_trackposition(demux_matroska_t *this, int *track_num, int64_t *pos) { ebml_parser_t *ebml = this->ebml; int next_level = 4; while (next_level == 4) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_CU_TRACK: { uint64_t num; lprintf("CueTrackpositionTrack\n"); if (!ebml_read_uint(ebml, &elem, &num)) return 0; *track_num = num; break; } case MATROSKA_ID_CU_CLUSTERPOSITION: { uint64_t num; lprintf("CueTrackpositionClusterposition\n"); if (!ebml_read_uint(ebml, &elem, &num)) return 0; *pos = this->segment.start + num; break; } default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_cue_point(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 3; int64_t timecode = -1, pos = -1; int track_num = -1; while (next_level == 3) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_CU_TIME: { uint64_t num; lprintf("CueTime\n"); if (!ebml_read_uint(ebml, &elem, &num)) return 0; timecode = num; break; } case MATROSKA_ID_CU_TRACKPOSITION: lprintf("CueTrackPosition\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_cue_trackposition(this, &track_num, &pos)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } if ((timecode != -1) && (track_num != -1) && (pos != -1)) { matroska_index_t *index; int i; index = NULL; for (i = 0; i < this->num_indexes; i++) if (this->indexes[i].track_num == track_num) { index = &this->indexes[i]; break; } if (index == NULL) { this->indexes = (matroska_index_t *)realloc(this->indexes, (this->num_indexes + 1) * sizeof(matroska_index_t)); memset(&this->indexes[this->num_indexes], 0, sizeof(matroska_index_t)); index = &this->indexes[this->num_indexes]; index->track_num = track_num; this->num_indexes++; } if ((index->num_entries % 1024) == 0) { index->pos = (off_t *)realloc(index->pos, sizeof(off_t) * (index->num_entries + 1024)); index->timecode = (off_t *)realloc(index->timecode, sizeof(uint64_t) * (index->num_entries + 1024)); } index->pos[index->num_entries] = pos; index->timecode[index->num_entries] = timecode; index->num_entries++; } return 1; } static int parse_cues(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_CU_POINT: lprintf("CuePoint\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_cue_point(this)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_attachments(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_tags(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static void alloc_block_data (demux_matroska_t *this, int len) { /* memory management */ if (this->block_data_size < len) { if (this->block_data) this->block_data = realloc(this->block_data, len); else this->block_data = malloc(len); this->block_data_size = len; } } static int parse_ebml_uint(demux_matroska_t *this, uint8_t *data, uint64_t *num) { uint8_t mask = 0x80; int size = 1; int i; /* compute the size of the "data len" (1-8 bytes) */ while (size <= 8 && !(data[0] & mask)) { size++; mask >>= 1; } if (size > 8) { off_t pos = this->input->get_current_pos(this->input); xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: Invalid Track Number at position %llu\n", pos); return 0; } *num = data[0]; *num &= mask - 1; for (i = 1; i < size; i++) { *num = (*num << 8) | data[i]; } return size; } static int parse_ebml_sint(demux_matroska_t *this, uint8_t *data, int64_t *num) { uint64_t unum; int size; size = parse_ebml_uint(this, data, &unum); if (!size) return 0; /* formula taken from gstreamer demuxer */ if (unum == -1) *num = -1; else *num = unum - ((1 << ((7 * size) - 1)) - 1); return size; } static int find_track_by_id(demux_matroska_t *this, int track_num, matroska_track_t **track) { int i; *track = NULL; for (i = 0; i < this->num_tracks; i++) { if (this->tracks[i]->track_num == track_num) { *track = this->tracks[i]; return 1; } } return 0; } static int read_block_data (demux_matroska_t *this, int len) { alloc_block_data(this, len); /* block datas */ if (this->input->read(this->input, this->block_data, len) != len) { off_t pos = this->input->get_current_pos(this->input); xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: read error at position %llu\n", pos); return 0; } return 1; } static int parse_block (demux_matroska_t *this, uint64_t block_size, uint64_t cluster_timecode, uint64_t block_duration, off_t block_pos, off_t file_len, int is_key) { matroska_track_t *track; int64_t track_num; uint8_t *data; uint8_t flags; int gap, lacing, num_len; int timecode_diff; int64_t pts, xduration; int decoder_flags = 0; data = this->block_data; if (!(num_len = parse_ebml_uint(this, data, &track_num))) return 0; data += num_len; timecode_diff = (int)BE_16(data); data += 2; flags = *data; data += 1; lprintf("track_num: %lld, timecode_diff: %d, flags: 0x%x\n", track_num, timecode_diff, flags); gap = flags & 1; lacing = (flags >> 1) & 0x3; if (!find_track_by_id(this, (int)track_num, &track)) { xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: invalid track id: %lld\n", track_num); return 0; } pts = ((int64_t)cluster_timecode + timecode_diff) * (int64_t)this->timecode_scale * (int64_t)90 / (int64_t)1000000; /* After seeking we have to skip to the next key frame. */ if (this->skip_to_timecode > 0) { if ((this->skip_for_track != track->track_num) || !is_key || (pts < this->skip_to_timecode)) return 1; this->skip_to_timecode = 0; } if (block_duration) { xduration = (int64_t)block_duration * (int64_t)this->timecode_scale * (int64_t)90 / (int64_t)1000000; } else { block_duration = track->default_duration; xduration = (int64_t)block_duration * (int64_t)90 / (int64_t)1000000; } lprintf("pts: %lld, duration: %lld\n", pts, xduration); check_newpts(this, pts, track); if (this->preview_mode) { this->preview_sent++; decoder_flags |= BUF_FLAG_PREVIEW; } if (lacing == MATROSKA_NO_LACING) { int block_size_left; lprintf("no lacing\n"); block_size_left = (this->block_data + block_size) - data; lprintf("size: %d, block_size: %lld\n", block_size_left, block_size); if (track->handle_content != NULL) { track->handle_content((demux_plugin_t *)this, track, decoder_flags, data, block_size_left, pts, xduration, block_pos, file_len, pts / 90); } else { _x_demux_send_data(track->fifo, data, block_size_left, pts, track->buf_type, decoder_flags, block_pos, file_len, pts / 90, this->duration, 0); } } else { int block_size_left; uint8_t lace_num; int frame[MAX_FRAMES]; int i; /* number of laced frames */ lace_num = *data; data++; lprintf("lace_num: %d\n", lace_num); if ((lace_num + 1) > MAX_FRAMES) { xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: too many frames: %d\n", lace_num); return 0; } block_size_left = this->block_data + block_size - data; switch (lacing) { case MATROSKA_XIPH_LACING: { lprintf("xiph lacing\n"); /* size of each frame */ for (i = 0; i < lace_num; i++) { int size = 0; while (*data == 255) { size += *data; data++; block_size_left--; } size += *data; data++; block_size_left--; frame[i] = size; block_size_left -= size; } /* last frame */ frame[lace_num] = block_size_left; } break; case MATROSKA_FIXED_SIZE_LACING: lprintf("fixed size lacing\n"); for (i = 0; i < lace_num; i++) { frame[i] = block_size / (lace_num + 1); block_size_left -= frame[i]; } frame[lace_num] = block_size_left; break; case MATROSKA_EBML_LACING: { int64_t tmp; lprintf("ebml lacing\n"); /* size of each frame */ if (!(num_len = parse_ebml_uint(this, data, &tmp))) return 0; data += num_len; block_size_left -= num_len; frame[0] = (int) tmp; lprintf("first frame len: %d\n", frame[0]); block_size_left -= frame[0]; for (i = 1; i < lace_num; i++) { if (!(num_len = parse_ebml_sint(this, data, &tmp))) return 0; data += num_len; block_size_left -= num_len; frame[i] = frame[i-1] + tmp; block_size_left -= frame[i]; } /* last frame */ frame[lace_num] = block_size_left; } break; default: xprintf(this->stream->xine, XINE_VERBOSITY_LOG, "demux_matroska: invalid lacing: %d\n", lacing); return 0; } /* send each frame to the decoder */ for (i = 0; i <= lace_num; i++) { if (track->handle_content != NULL) { track->handle_content((demux_plugin_t *)this, track, decoder_flags, data, frame[i], pts, 0, block_pos, file_len, pts / 90); } else { _x_demux_send_data(track->fifo, data, frame[i], pts, track->buf_type, decoder_flags, block_pos, file_len, pts / 90, this->duration, 0); } data += frame[i]; pts = 0; } } return 1; } static int parse_block_group(demux_matroska_t *this, uint64_t cluster_timecode, uint64_t cluster_duration) { ebml_parser_t *ebml = this->ebml; int next_level = 3; int has_block = 0; uint64_t block_duration = 0; off_t block_pos = 0; off_t file_len = 0; int block_len = 0; int is_key = 1; while (next_level == 3) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_CL_BLOCK: lprintf("block\n"); block_pos = this->input->get_current_pos(this->input); block_len = elem.len; file_len = this->input->get_length(this->input); if (!read_block_data(this, elem.len)) return 0; has_block = 1; break; case MATROSKA_ID_CL_BLOCKDURATION: /* should override track duration */ if (!ebml_read_uint(ebml, &elem, &block_duration)) return 0; lprintf("duration: %lld\n", block_duration); break; case MATROSKA_ID_CL_REFERENCEBLOCK: is_key = 0; if (!ebml_skip(ebml, &elem)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } if (!has_block) return 0; /* we have the duration, we can parse the block now */ if (!parse_block(this, block_len, cluster_timecode, block_duration, block_pos, file_len, is_key)) return 0; return 1; } static int parse_cluster(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; uint64_t timecode = 0; uint64_t duration = 0; if (!this->first_cluster_found) { int idx, entry; /* Scale the cues to ms precision. */ for (idx = 0; idx < this->num_indexes; idx++) { matroska_index_t *index = &this->indexes[idx]; for (entry = 0; entry < index->num_entries; entry++) index->timecode[entry] = index->timecode[entry] * this->timecode_scale / 1000000; } this->first_cluster_found = 1; } while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_CL_TIMECODE: lprintf("timecode\n"); if (!ebml_read_uint(ebml, &elem, &timecode)) return 0; break; case MATROSKA_ID_CL_DURATION: lprintf("duration\n"); if (!ebml_read_uint(ebml, &elem, &duration)) return 0; break; case MATROSKA_ID_CL_BLOCKGROUP: lprintf("blockgroup\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_block_group(this, timecode, duration)) return 0; break; case MATROSKA_ID_CL_BLOCK: lprintf("block\n"); if (!ebml_skip(ebml, &elem)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } return 1; } static int parse_seek_entry(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 3; int has_id = 0; int has_position = 0; uint64_t id, pos; while (next_level == 3) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_S_ID: lprintf("SeekID\n"); if (!ebml_read_uint(ebml, &elem, &id)) return 0; has_id = 1; break; case MATROSKA_ID_S_POSITION: lprintf("SeekPosition\n"); if (!ebml_read_uint(ebml, &elem, &pos)) return 0; has_position = 1; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } if (has_id && has_position) { switch (id) { case MATROSKA_ID_INFO: lprintf("Seek Entry: Info: %lld\n", pos); this->info_pos = this->segment.start + pos; break; case MATROSKA_ID_SEEKHEAD: lprintf("Seek Entry: SeekHead: %lld\n", pos); this->seekhead_pos = this->segment.start + pos; break; case MATROSKA_ID_CLUSTER: lprintf("Seek Entry: Cluster: %lld\n", pos); break; case MATROSKA_ID_TRACKS: lprintf("Seek Entry: Tracks: %lld\n", pos); this->tracks_pos = this->segment.start + pos; break; case MATROSKA_ID_CUES: lprintf("Seek Entry: Cues: %lld\n", pos); this->cues_pos = this->segment.start + pos; break; case MATROSKA_ID_ATTACHMENTS: lprintf("Seek Entry: Attachements: %lld\n", pos); this->attachments_pos = this->segment.start + pos; break; case MATROSKA_ID_CHAPTERS: lprintf("Seek Entry: Chapters: %lld\n", pos); this->chapters_pos = this->segment.start + pos; break; default: lprintf("Unhandled Seek Entry ID: 0x%llx\n", id); } return 1; } else { lprintf("incomplete Seek Entry\n"); return 1; } } static int parse_seekhead(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; int next_level = 2; this->has_seekhead = 1; while (next_level == 2) { ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_S_ENTRY: lprintf("Seek\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_seek_entry(this)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } next_level = ebml_get_next_level(ebml, &elem); } if ((this->cues_pos > 0) && (this->cues_pos < this->input->get_length(this->input))) { off_t current_pos; int current_level; current_pos = this->input->get_current_pos(this->input); current_level = next_level; if (this->input->seek(this->input, this->cues_pos, SEEK_SET) != this->cues_pos) { xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "demux_matroska: failed to seek to cues_pos: %lld\n", this->cues_pos); return 0; } this->ebml->level = 2; parse_cues(this); if (this->input->seek(this->input, current_pos, SEEK_SET) != current_pos) { xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "demux_matroska: failed to seek to pos: %lld\n", current_pos); return 0; } this->ebml->level = current_level; } return 1; } static int parse_top_level_head(demux_matroska_t *this, int *next_level) { ebml_parser_t *ebml = this->ebml; ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_SEEKHEAD: lprintf("SeekHead\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_seekhead(this)) return 0; this->has_seekhead = 1; break; case MATROSKA_ID_INFO: lprintf("Info\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_info(this)) return 0; break; case MATROSKA_ID_TRACKS: lprintf("Tracks\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_tracks(this)) return 0; break; case MATROSKA_ID_CHAPTERS: lprintf("Chapters\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_chapters(this)) return 0; break; case MATROSKA_ID_CLUSTER: lprintf("Cluster\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_CUES: lprintf("Cues\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_cues(this)) return 0; break; case MATROSKA_ID_ATTACHMENTS: lprintf("Attachments\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_attachments(this)) return 0; break; case MATROSKA_ID_TAGS: lprintf("Tags\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_tags(this)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } if (next_level) *next_level = ebml_get_next_level(ebml, &elem); return 1; } static int parse_top_level(demux_matroska_t *this, int *next_level) { ebml_parser_t *ebml = this->ebml; ebml_elem_t elem; if (!ebml_read_elem_head(ebml, &elem)) return 0; switch (elem.id) { case MATROSKA_ID_SEEKHEAD: lprintf("SeekHead\n"); if (!ebml_skip(ebml, &elem)) return 0; this->has_seekhead = 1; break; case MATROSKA_ID_INFO: lprintf("Info\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_TRACKS: lprintf("Tracks\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_CHAPTERS: lprintf("Chapters\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_CLUSTER: lprintf("Cluster\n"); if (!ebml_read_master (ebml, &elem)) return 0; if (!parse_cluster(this)) return 0; break; case MATROSKA_ID_CUES: lprintf("Cues\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_ATTACHMENTS: lprintf("Attachments\n"); if (!ebml_skip(ebml, &elem)) return 0; break; case MATROSKA_ID_TAGS: lprintf("Tags\n"); if (!ebml_skip(ebml, &elem)) return 0; break; default: lprintf("Unhandled ID: 0x%x\n", elem.id); if (!ebml_skip(ebml, &elem)) return 0; } if (next_level) *next_level = ebml_get_next_level(ebml, &elem); return 1; } static int parse_segment(demux_matroska_t *this) { ebml_parser_t *ebml = this->ebml; /* check segment id */ if (!ebml_read_elem_head(ebml, &this->segment)) return 0; if (this->segment.id == MATROSKA_ID_SEGMENT) { int next_level; lprintf("Segment\n"); if (!ebml_read_master (ebml, &this->segment)) return 0; next_level = 1; while (next_level == 1) { if (!parse_top_level_head(this, &next_level)) return 0; #if 0 if (this->has_seekhead && !this->seekhead_handled) { if (this->seekhead_pos) { if (this->input->seek(this->input, this->seekhead_pos, SEEK_SET) < 0) return 0; this->seekhead_pos = 0; } else { /* parse all top level elements except clusters */ if (this->info_pos) { if (this->input->seek(this->input, this->info_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } if (this->tracks_pos) { if (this->input->seek(this->input, this->tracks_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } if (this->chapters_pos) { if (this->input->seek(this->input, this->chapters_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } if (this->cues_pos) { if (this->input->seek(this->input, this->cues_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } if (this->attachments_pos) { if (this->input->seek(this->input, this->attachments_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } if (this->tags_pos) { if (this->input->seek(this->input, this->tags_pos, SEEK_SET) < 0) return 0; if (!parse_top_level(this, &next_level)) return 0; } /* this->seekhead_handled = 1; */ return 1; } } #endif } return 1; } else { /* not a segment */ xprintf(this->stream->xine, XINE_VERBOSITY_DEBUG, "demux_matroska: invalid segment\n"); return 0; } } static int demux_matroska_send_chunk (demux_plugin_t *this_gen) { demux_matroska_t *this = (demux_matroska_t *) this_gen; int next_level; if (!parse_top_level(this, &next_level)) { this->status = DEMUX_FINISHED; } return this->status; } static int demux_matroska_get_status (demux_plugin_t *this_gen) { demux_matroska_t *this = (demux_matroska_t *) this_gen; return this->status; } static void demux_matroska_send_headers (demux_plugin_t *this_gen) { demux_matroska_t *this = (demux_matroska_t *) this_gen; int next_level; _x_demux_control_start (this->stream); if (!parse_segment(this)) this->status = DEMUX_FINISHED; else this->status = DEMUX_OK; _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_VIDEO, (this->num_video_tracks != 0)); _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_AUDIO, (this->num_audio_tracks != 0)); /* * send preview buffers */ /* for (i = 0; i < NUM_PREVIEW_BUFFERS; i++) { if (!demux_mpgaudio_next (this, BUF_FLAG_PREVIEW)) { break; } } */ /* enter in the segment */ ebml_read_master (this->ebml, &this->segment); /* seek to the beginning of the segment */ this->input->seek(this->input, this->segment.start, SEEK_SET); this->preview_sent = 0; this->preview_mode = 1; next_level = 1; while ((this->preview_sent < NUM_PREVIEW_BUFFERS) && (next_level == 1)) { if (!parse_top_level (this, &next_level)) { break; } } this->preview_mode = 0; /* seek to the beginning of the segment */ this->input->seek(this->input, this->segment.start, SEEK_SET); } /* support function that performs a binary seek on a track; returns the * best index entry or -1 if the seek was beyond the end of the file */ static int binary_seek(matroska_index_t *index, off_t start_pos, int start_time) { int best_index; int left, middle, right; int found; /* perform a binary search on the trak, testing the offset * boundaries first; offset request has precedent over time request */ if (start_pos) { if (start_pos <= index->pos[0]) best_index = 0; else if (start_pos >= index->pos[index->num_entries - 1]) best_index = index->num_entries - 1; else { left = 0; right = index->num_entries - 1; found = 0; while (!found) { middle = (left + right + 1) / 2; if ((start_pos >= index->pos[middle]) && (start_pos < index->pos[middle + 1])) found = 1; else if (start_pos < index->pos[middle]) right = middle - 1; else left = middle; } best_index = middle; } } else { if (start_time <= index->timecode[0]) best_index = 0; else if (start_time >= index->timecode[index->num_entries - 1]) best_index = index->num_entries - 1; else { left = 0; right = index->num_entries - 1; do { middle = (left + right + 1) / 2; if (start_time < index->timecode[middle]) right = (middle - 1); else left = middle; } while (left < right); best_index = left; } } return best_index; } static int demux_matroska_seek (demux_plugin_t *this_gen, off_t start_pos, int start_time, int playing) { demux_matroska_t *this = (demux_matroska_t *) this_gen; matroska_index_t *index; matroska_track_t *track; int i, entry; this->status = DEMUX_OK; /* engine sync stuff */ for (i = 0; i < this->num_tracks; i++) { this->tracks[i]->last_pts = 0; } this->send_newpts = 1; this->buf_flag_seek = 1; /* Seeking without an index is not supported yet. */ if (!this->num_indexes) return this->status; /* Find an index for a video track and use the first available index otherwise. */ index = NULL; for (i = 0; i < this->num_indexes; i++) { if (this->indexes[i].num_entries == 0) continue; if ((find_track_by_id(this, this->indexes[i].track_num, &track)) && (track->track_type == MATROSKA_TRACK_VIDEO)) { lprintf("video track found\n"); index = &this->indexes[i]; break; } } if (index == NULL) for (i = 0; i < this->num_indexes; i++) { if (this->indexes[i].num_entries == 0) continue; if (find_track_by_id(this, this->indexes[i].track_num, &track)) { index = &this->indexes[i]; break; } } /* No suitable index found. */ if (index == NULL) return this->status; entry = binary_seek(index, start_pos, start_time); if (entry == -1) { lprintf("seeking for track %d to %s %lld - no entry found/EOS.\n", index->track_num, start_pos ? "pos" : "time", start_pos ? (int64_t)start_pos : (int64_t)start_time); this->status = DEMUX_FINISHED; } else { lprintf("seeking for track %d to %s %lld. decision is #%d at %lld/%lld\n", index->track_num, start_pos ? "pos" : "time", start_pos ? (int64_t)start_pos : (int64_t)start_time, index->track_num, index->timecode[entry], index->pos[entry]); if (this->input->seek(this->input, index->pos[entry], SEEK_SET) == -1) this->status = DEMUX_FINISHED; /* we always seek to the ebml level 1 * this allows seeking even if the end of file has been reached */ this->ebml->level = 1; this->skip_to_timecode = index->timecode[entry]; this->skip_for_track = track->track_num; _x_demux_flush_engine(this->stream); } return this->status; } static void demux_matroska_dispose (demux_plugin_t *this_gen) { demux_matroska_t *this = (demux_matroska_t *) this_gen; int i; /* free tracks */ for (i = 0; i < this->num_tracks; i++) { matroska_track_t *track; track = this->tracks[i]; if (track->language) free (track->language); if (track->codec_id) free (track->codec_id); if (track->codec_private) free (track->codec_private); if (track->video_track) free (track->video_track); if (track->audio_track) free (track->audio_track); free (track); } /* Free the cues. */ for (i = 0; i < this->num_indexes; i++) { if (this->indexes[i].pos) free(this->indexes[i].pos); if (this->indexes[i].timecode) free(this->indexes[i].timecode); } if (this->indexes) free(this->indexes); dispose_ebml_parser(this->ebml); free (this); } static int demux_matroska_get_stream_length (demux_plugin_t *this_gen) { demux_matroska_t *this = (demux_matroska_t *) this_gen; return (int)this->duration; } static uint32_t demux_matroska_get_capabilities (demux_plugin_t *this_gen) { return DEMUX_CAP_SPULANG | DEMUX_CAP_AUDIOLANG; } static int demux_matroska_get_optional_data (demux_plugin_t *this_gen, void *data, int data_type) { demux_matroska_t *this = (demux_matroska_t *) this_gen; char *str = (char *) data; int channel = *((int *)data); int track_num; switch (data_type) { case DEMUX_OPTIONAL_DATA_SPULANG: lprintf ("DEMUX_OPTIONAL_DATA_SPULANG channel = %d\n",channel); if ((channel >= 0) && (channel < this->num_sub_tracks)) { for (track_num = 0; track_num < this->num_tracks; track_num++) { matroska_track_t *track = this->tracks[track_num]; if ((track->buf_type & 0xFF00001F) == (BUF_SPU_BASE + channel)) { if (track->language) { strncpy (str, track->language, XINE_LANG_MAX); str[XINE_LANG_MAX - 1] = '\0'; if (strlen(track->language) >= XINE_LANG_MAX) /* the string got truncated */ str[XINE_LANG_MAX - 2] = str[XINE_LANG_MAX - 3] = str[XINE_LANG_MAX - 4] = '.'; } else { snprintf(str, XINE_LANG_MAX, "eng"); } return DEMUX_OPTIONAL_SUCCESS; } } } return DEMUX_OPTIONAL_UNSUPPORTED; case DEMUX_OPTIONAL_DATA_AUDIOLANG: lprintf ("DEMUX_OPTIONAL_DATA_AUDIOLANG channel = %d\n",channel); if ((channel >= 0) && (channel < this->num_audio_tracks)) { for (track_num = 0; track_num < this->num_tracks; track_num++) { matroska_track_t *track = this->tracks[track_num]; if ((track->buf_type & 0xFF00001F) == (BUF_AUDIO_BASE + channel)) { if (track->language) { strncpy (str, track->language, XINE_LANG_MAX); str[XINE_LANG_MAX - 1] = '\0'; if (strlen(track->language) >= XINE_LANG_MAX) /* the string got truncated */ str[XINE_LANG_MAX - 2] = str[XINE_LANG_MAX - 3] = str[XINE_LANG_MAX - 4] = '.'; } else { snprintf(str, XINE_LANG_MAX, "eng"); } return DEMUX_OPTIONAL_SUCCESS; } } } return DEMUX_OPTIONAL_UNSUPPORTED; default: return DEMUX_OPTIONAL_UNSUPPORTED; } } static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *stream, input_plugin_t *input) { demux_matroska_t *this = NULL; ebml_parser_t *ebml = NULL; lprintf("trying to open %s...\n", input->get_mrl(input)); switch (stream->content_detection_method) { case METHOD_BY_CONTENT: { if (!(input->get_capabilities (input) & INPUT_CAP_SEEKABLE)) return NULL; input->seek(input, 0, SEEK_SET); ebml = new_ebml_parser(stream->xine, input); if (!ebml_check_header(ebml)) goto error; } break; case METHOD_BY_EXTENSION: { char *mrl = input->get_mrl(input); char *extensions; lprintf ("stage by extension %s\n", mrl); extensions = class_gen->get_extensions (class_gen); if (!_x_demux_check_extension (mrl, extensions)) return NULL; } break; case METHOD_EXPLICIT: break; default: return NULL; } this = xine_xmalloc (sizeof (demux_matroska_t)); this->demux_plugin.send_headers = demux_matroska_send_headers; this->demux_plugin.send_chunk = demux_matroska_send_chunk; this->demux_plugin.seek = demux_matroska_seek; this->demux_plugin.dispose = demux_matroska_dispose; this->demux_plugin.get_status = demux_matroska_get_status; this->demux_plugin.get_stream_length = demux_matroska_get_stream_length; this->demux_plugin.get_capabilities = demux_matroska_get_capabilities; this->demux_plugin.get_optional_data = demux_matroska_get_optional_data; this->demux_plugin.demux_class = class_gen; this->input = input; this->status = DEMUX_FINISHED; this->stream = stream; if (!ebml) { ebml = new_ebml_parser(stream->xine, input); if (!ebml_check_header(ebml)) goto error; } this->ebml = ebml; /* check header fields */ if (ebml->max_id_len > 4) goto error; if (ebml->max_size_len > 8) goto error; if (strcmp(ebml->doctype, "matroska")) goto error; return &this->demux_plugin; error: if (ebml) dispose_ebml_parser(ebml); free(this); return NULL; } /* * demux matroska class */ static char *get_description (demux_class_t *this_gen) { return "matroska demux plugin"; } static char *get_identifier (demux_class_t *this_gen) { return "matroska"; } static char *get_extensions (demux_class_t *this_gen) { return "mkv"; } static char *get_mimetypes (demux_class_t *this_gen) { return "video/mkv: mkv: matroska;"; } static void class_dispose (demux_class_t *this_gen) { demux_matroska_class_t *this = (demux_matroska_class_t *) this_gen; free (this); } static void *init_class (xine_t *xine, void *data) { demux_matroska_class_t *this; this = xine_xmalloc (sizeof (demux_matroska_class_t)); this->xine = xine; this->demux_class.open_plugin = open_plugin; this->demux_class.get_description = get_description; this->demux_class.get_identifier = get_identifier; this->demux_class.get_mimetypes = get_mimetypes; this->demux_class.get_extensions = get_extensions; this->demux_class.dispose = class_dispose; return this; } /* * exported plugin catalog entry */ plugin_info_t xine_plugin_info[] = { /* type, API, "name", version, special_info, init_function */ { PLUGIN_DEMUX, 24, "matroska", XINE_VERSION_CODE, NULL, init_class }, { PLUGIN_NONE, 0, "", 0, NULL, NULL } };