extern "C" { #include "config.h" } #ifdef HAVE_MATROSKA extern "C" { #include #include #include #include "../mp_msg.h" #include "../help_mp.h" #include "stream.h" #include "demuxer.h" #include "stheader.h" #include "../subreader.h" #include "../libvo/sub.h" } #include #include #include #include "EbmlHead.h" #include "EbmlSubHead.h" #include "EbmlStream.h" #include "EbmlContexts.h" #include "EbmlVersion.h" #include "FileKax.h" #include "KaxAttachements.h" #include "KaxBlock.h" #include "KaxBlockData.h" #include "KaxChapters.h" #include "KaxCluster.h" #include "KaxClusterData.h" #include "KaxContexts.h" #include "KaxCues.h" #include "KaxCuesData.h" #include "KaxInfo.h" #include "KaxInfoData.h" #include "KaxSeekHead.h" #include "KaxSegment.h" #include "KaxTracks.h" #include "KaxTrackAudio.h" #include "KaxTrackVideo.h" #include "StdIOCallback.h" #include "matroska.h" using namespace LIBMATROSKA_NAMESPACE; using namespace std; #ifndef LIBEBML_VERSION #define LIBEBML_VERSION 000000 #endif // LIBEBML_VERSION // for e.g. "-slang ger" extern char *dvdsub_lang; extern char *audio_lang; // default values for Matroska elements #define MKVD_TIMECODESCALE 1000000 // 1000000 = 1ms class mpstream_io_callback: public IOCallback { private: stream_t *s; public: mpstream_io_callback(stream_t *stream); virtual uint32 read(void *buffer, size_t size); virtual void setFilePointer(int64 offset, seek_mode mode = seek_beginning); virtual size_t write(const void *buffer, size_t size); virtual uint64 getFilePointer(); virtual void close(); }; mpstream_io_callback::mpstream_io_callback(stream_t *stream) { s = stream; } uint32 mpstream_io_callback::read(void *buffer, size_t size) { uint32_t result; result = stream_read(s, (char *)buffer, size); return result; } void mpstream_io_callback::setFilePointer(int64 offset, seek_mode mode) { int64 new_pos; if (mode == seek_beginning) new_pos = offset + s->start_pos; else if (mode == seek_end) new_pos = s->end_pos - offset; else new_pos = s->pos + offset; if (new_pos > s->end_pos) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek warning: new_pos %lld > end_pos " "%lld\n", new_pos, s->end_pos); return; } stream_seek(s, new_pos); } size_t mpstream_io_callback::write(const void */*buffer*/, size_t /*size*/) { return 0; } uint64 mpstream_io_callback::getFilePointer() { return s->pos - s->buf_len + s->buf_pos; } void mpstream_io_callback::close() { } typedef struct mkv_index_entry { uint64_t timecode, filepos; int is_key; } mkv_index_entry_t; typedef struct mkv_track_index { uint32_t tnum; int num_entries; mkv_index_entry_t *entries; } mkv_track_index_t; typedef struct mkv_track { uint32_t tnum; char *codec_id; int ms_compat; char *language; char type; // 'v' = video, 'a' = audio, 's' = subs char v_fourcc[5]; uint32_t v_width, v_height, v_dwidth, v_dheight; float v_frate; uint32_t a_formattag; uint32_t a_channels, a_bps; float a_sfreq; int default_track; void *private_data; unsigned int private_size; unsigned char *headers[3]; uint32_t header_sizes[3]; int ok; } mkv_track_t; typedef struct mkv_demuxer { float duration, last_pts; uint64_t last_filepos; mkv_track_t **tracks; int num_tracks; mkv_track_t *video, *audio, *subs_track; uint64_t tc_scale, cluster_tc; mpstream_io_callback *in; uint64_t clear_subs_at; subtitle subs; EbmlStream *es; EbmlElement *saved_l1, *saved_l2; KaxSegment *segment; KaxCluster *cluster; mkv_track_index_t *index; int num_indexes, cues_found, cues_searched; int64_t *cluster_positions; int num_cluster_pos; int skip_to_keyframe; int64_t skip_to_timecode; } mkv_demuxer_t; static uint16_t get_uint16(const void *buf) { uint16_t ret; unsigned char *tmp; tmp = (unsigned char *) buf; ret = tmp[1] & 0xff; ret = (ret << 8) + (tmp[0] & 0xff); return ret; } static uint32_t get_uint32(const void *buf) { uint32_t ret; unsigned char *tmp; tmp = (unsigned char *) buf; ret = tmp[3] & 0xff; ret = (ret << 8) + (tmp[2] & 0xff); ret = (ret << 8) + (tmp[1] & 0xff); ret = (ret << 8) + (tmp[0] & 0xff); return ret; } static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t duration) { mkv_demuxer_t *mkv_d = (mkv_demuxer_t *)d->priv; int len, line, state; char *s1, *s2, *buffer; if (duration == -1) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Warning: No KaxBlockDuration " "element for subtitle track found.\n"); return; } DataBuffer &data = block->GetBuffer(0); len = data.Size(); buffer = (char *)data.Buffer(); s1 = buffer; while (((*s1 == '\n') || (*s1 == '\r')) && ((unsigned int)(s1 - buffer) <= data.Size())) s1++; line = 0; s2 = mkv_d->subs.text[0]; mkv_d->subs.lines = 1; state = 0; while ((unsigned int)(s1 - buffer) != data.Size()) { if ((*s1 == '\n') || (*s1 == '\r')) { if (state == 0) { // normal char --> newline if (mkv_d->subs.lines == SUB_MAX_TEXT) break; *s2 = 0; s2 = mkv_d->subs.text[mkv_d->subs.lines]; mkv_d->subs.lines++; state = 1; } } else if (*s1 == '<') // skip HTML tags state = 2; else if (*s1 == '>') state = 0; else if (state != 2) { // normal character state = 0; if ((s2 - mkv_d->subs.text[mkv_d->subs.lines - 1]) < 255) { *s2 = *s1; s2++; } } s1++; } *s2 = 0; #ifdef USE_ICONV subcp_recode1(&mkv_d->subs); #endif vo_sub = &mkv_d->subs; vo_osd_changed(OSDTYPE_SUBTITLE); mkv_d->clear_subs_at = block->GlobalTimecode() / 1000000 + duration; } static mkv_track_t *new_mkv_track(mkv_demuxer_t *d) { mkv_track_t *t; t = (mkv_track_t *)malloc(sizeof(mkv_track_t)); if (t != NULL) { memset(t, 0, sizeof(mkv_track_t)); d->tracks = (mkv_track_t **)realloc(d->tracks, (d->num_tracks + 1) * sizeof(mkv_track_t *)); if (d->tracks == NULL) return NULL; d->tracks[d->num_tracks] = t; d->num_tracks++; // Set default values. t->default_track = 1; t->a_sfreq = 8000.0; t->a_channels = 1; t->language = strdup("eng"); } return t; } static mkv_track_t *find_track_by_num(mkv_demuxer_t *d, uint32_t n, mkv_track_t *c) { int i; for (i = 0; i < d->num_tracks; i++) if ((d->tracks[i] != NULL) && (d->tracks[i]->tnum == n) && (d->tracks[i] != c)) return d->tracks[i]; return NULL; } static mkv_track_t *find_track_by_language(mkv_demuxer_t *d, char *language, mkv_track_t *c, char type = 's') { int i; for (i = 0; i < d->num_tracks; i++) if ((d->tracks[i] != NULL) && (d->tracks[i] != c) && (d->tracks[i]->language != NULL) && !strcmp(d->tracks[i]->language, language) && (d->tracks[i]->type == type)) return d->tracks[i]; return NULL; } static int check_track_information(mkv_demuxer_t *d) { int i, track_num; unsigned char *c; uint32_t u, offset, length; mkv_track_t *t; BITMAPINFOHEADER *bih; WAVEFORMATEX *wfe; for (track_num = 0; track_num < d->num_tracks; track_num++) { t = d->tracks[track_num]; switch (t->type) { case 'v': // video track if (t->codec_id == NULL) continue; if (!strcmp(t->codec_id, MKV_V_MSCOMP)) { if ((t->private_data == NULL) || (t->private_size < sizeof(BITMAPINFOHEADER))) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: CodecID for track " "%u is '" MKV_V_MSCOMP "', but there was no " "BITMAPINFOHEADER struct present. Therefore we don't have " "a FourCC to identify the video codec used.\n", t->tnum); continue; } else { t->ms_compat = 1; bih = (BITMAPINFOHEADER *)t->private_data; u = get_uint32(&bih->biWidth); if (t->v_width != u) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: (MS " "compatibility mode, track %u) " "Matrosa says video width is %u, but the " "BITMAPINFOHEADER says %u.\n", t->tnum, t->v_width, u); if (t->v_width == 0) t->v_width = u; } u = get_uint32(&bih->biHeight); if (t->v_height != u) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: (MS compatibility " "mode, track %u) " "Matrosa video height is %u, but the BITMAPINFOHEADER " "says %u.\n", t->tnum, t->v_height, u); if (t->v_height == 0) t->v_height = u; } memcpy(t->v_fourcc, &bih->biCompression, 4); if (t->v_frate == 0.0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] ERROR: (MS compatibility " "mode, track %u) " "No VideoFrameRate element was found.\n", t->tnum); continue; } } } else { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Native CodecIDs for video " "tracks are not supported yet (track %u).\n", t->tnum); continue; } if (t->v_width == 0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] The width for track %u was " "not set.\n", t->tnum); continue; } if (t->v_height == 0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] The height for track %u was " "not set.\n", t->tnum); continue; } if (t->v_dwidth == 0) t->v_dwidth = t->v_width; if (t->v_dheight == 0) t->v_dheight = t->v_height; // This track seems to be ok. t->ok = 1; break; case 'a': // audio track if (t->codec_id == NULL) continue; if (!strcmp(t->codec_id, MKV_A_ACM)) { if ((t->private_data == NULL) || (t->private_size < sizeof(WAVEFORMATEX))) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: CodecID for track " "%u is '" MKV_A_ACM "', " "but there was no WAVEFORMATEX struct present. " "Therefore we don't have a format ID to identify the audio " "codec used.\n", t->tnum); continue; } else { t->ms_compat = 1; wfe = (WAVEFORMATEX *)t->private_data; u = get_uint32(&wfe->nSamplesPerSec); if (((uint32_t)t->a_sfreq) != u) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: (MS compatibility " "mode for track %u) " "Matroska says that there are %u samples per second, " "but WAVEFORMATEX says that there are %u.\n", t->tnum, (uint32_t)t->a_sfreq, u); if (t->a_sfreq == 0.0) t->a_sfreq = (float)u; } u = get_uint16(&wfe->nChannels); if (t->a_channels != u) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: (MS " "compatibility mode for track %u) " "Matroska says that there are %u channels, but the " "WAVEFORMATEX says that there are %u.\n", t->tnum, t->a_channels, u); if (t->a_channels == 0) t->a_channels = u; } u = get_uint16(&wfe->wBitsPerSample); if (t->a_bps != u) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: (MS " "compatibility mode for track %u) " "Matroska says that there are %u bits per sample, " "but the WAVEFORMATEX says that there are %u.\n", t->tnum, t->a_bps, u); if (t->a_bps == 0) t->a_bps = u; } t->a_formattag = get_uint16(&wfe->wFormatTag); } } else { if (!strcmp(t->codec_id, MKV_A_MP3)) t->a_formattag = 0x0055; else if (!strcmp(t->codec_id, MKV_A_AC3)) t->a_formattag = 0x2000; else if (!strcmp(t->codec_id, MKV_A_DTS)) // uses same format tag as AC3, only supported with -hwac3 t->a_formattag = 0x2000; else if (!strcmp(t->codec_id, MKV_A_PCM)) t->a_formattag = 0x0001; else if (!strcmp(t->codec_id, MKV_A_AAC_2MAIN) || !strcmp(t->codec_id, MKV_A_AAC_2LC) || !strcmp(t->codec_id, MKV_A_AAC_2SSR) || !strcmp(t->codec_id, MKV_A_AAC_4MAIN) || !strcmp(t->codec_id, MKV_A_AAC_4LC) || !strcmp(t->codec_id, MKV_A_AAC_4SSR) || !strcmp(t->codec_id, MKV_A_AAC_4LTP) || !strcmp(t->codec_id, MKV_A_AAC_4SBR)) t->a_formattag = mmioFOURCC('M', 'P', '4', 'A'); else if (!strcmp(t->codec_id, MKV_A_VORBIS)) { if (t->private_data == NULL) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] WARNING: CodecID for " "track %u is '" MKV_A_VORBIS "', but there are no header packets present.", t->tnum); continue; } c = (unsigned char *)t->private_data; if (c[0] != 2) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Vorbis track does not " "contain valid headers.\n"); continue; } offset = 1; for (i = 0; i < 2; i++) { length = 0; while ((c[offset] == (unsigned char )255) && (length < t->private_size)) { length += 255; offset++; } if (offset >= (t->private_size - 1)) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Vorbis track does not " "contain valid headers.\n"); continue; } length += c[offset]; offset++; t->header_sizes[i] = length; } t->headers[0] = &c[offset]; t->headers[1] = &c[offset + t->header_sizes[0]]; t->headers[2] = &c[offset + t->header_sizes[0] + t->header_sizes[1]]; t->header_sizes[2] = t->private_size - offset - t->header_sizes[0] - t->header_sizes[1]; t->a_formattag = 0xFFFE; } else { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown/unsupported audio " "codec ID '%s' for track %u.\n", t->codec_id, t->tnum); continue; } } if (t->a_sfreq == 0.0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] The sampling frequency was not " "set for track %u.\n", t->tnum); continue; } if (t->a_channels == 0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] The number of channels was not " "set for track %u.\n", t->tnum); continue; } if (t->a_formattag == 0) { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] The audio format tag was not " "set for track %u.\n", t->tnum); continue; } // This track seems to be ok. t->ok = 1; break; case 's': // Text subtitles do not need any data t->ok = 1; // except the CodecID. break; default: // unknown track type!? error in demuxer... mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Error in demux_mkv.cpp: unknown " "demuxer type for track %u: '%c'\n", t->tnum, t->type); continue; } if (t->ok) mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Track %u seems to be ok.\n", t->tnum); } return 1; } static void free_mkv_demuxer(mkv_demuxer_t *d) { int i; if (d == NULL) return; for (i = 0; i < d->num_tracks; i++) if (d->tracks[i] != NULL) { if (d->tracks[i]->private_data != NULL) free(d->tracks[i]->private_data); if (d->tracks[i]->language != NULL) free(d->tracks[i]->language); free(d->tracks[i]); } for (i = 0; i < d->num_indexes; i++) free(d->index[i].entries); free(d->index); if (d->es != NULL) delete d->es; if (d->saved_l1 != NULL) delete d->saved_l1; if (d->in != NULL) delete d->in; if (d->segment != NULL) delete d->segment; free(d); } static void add_index_entry(mkv_demuxer_t *d, uint32_t tnum, uint64_t filepos, uint64_t timecode, int is_key) { int i, found; mkv_index_entry_t *entry; for (i = 0, found = 0; i < d->num_indexes; i++) if (d->index[i].tnum == tnum) { found = 1; break; } if (!found) { d->index = (mkv_track_index_t *)realloc(d->index, (d->num_indexes + 1) * sizeof(mkv_track_index_t)); if (d->index == NULL) return; i = d->num_indexes; memset(&d->index[i], 0, sizeof(mkv_track_index_t)); d->index[i].tnum = tnum; d->num_indexes++; } d->index[i].entries = (mkv_index_entry_t *)realloc(d->index[i].entries, (d->index[i].num_entries + 1) * sizeof(mkv_index_entry_t)); if (d->index[i].entries == NULL) return; entry = &d->index[i].entries[d->index[i].num_entries]; entry->filepos = filepos; entry->timecode = timecode; entry->is_key = is_key; d->index[i].num_entries++; } static void add_cluster_position(mkv_demuxer_t *mkv_d, int64_t position) { mkv_d->cluster_positions = (int64_t *)realloc(mkv_d->cluster_positions, (mkv_d->num_cluster_pos + 1) * sizeof(int64_t)); if (mkv_d->cluster_positions != NULL) { mkv_d->cluster_positions[mkv_d->num_cluster_pos] = position; mkv_d->num_cluster_pos++; } else mkv_d->num_cluster_pos = 0; } static int parse_cues(mkv_demuxer_t *mkv_d) { EbmlElement *l1 = NULL, *l2 = NULL, *l3 = NULL, *l4 = NULL, *l5 = NULL; EbmlStream *es; int upper_lvl_el, elements_found, i, k; uint64_t tc_scale, filepos = 0, timecode = 0; uint32_t tnum = 0; mkv_index_entry_t *entry; es = mkv_d->es; tc_scale = mkv_d->tc_scale; upper_lvl_el = 0; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] /---- [ parsing cues ] -----------\n"); l1 = es->FindNextElement(mkv_d->segment->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); if (l1 == NULL) return 0; if (!(EbmlId(*l1) == KaxCues::ClassInfos.GlobalId)) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] No KaxCues element found but but %s.\n" "[mkv] \\---- [ parsing cues ] -----------\n", typeid(*l1).name()); return 0; } mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ found cues\n"); l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l2 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l2) == KaxCuePoint::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue point\n"); elements_found = 0; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l3 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l3) == KaxCueTime::ClassInfos.GlobalId) { KaxCueTime &cue_time = *static_cast(l3); cue_time.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue time: %.3fs\n", ((float)uint64(cue_time)) * tc_scale / 1000000000.0); timecode = uint64(cue_time) * tc_scale / 1000000; elements_found |= 1; } else if (EbmlId(*l3) == KaxCueTrackPositions::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue track " "positions\n"); l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l4 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l4) == KaxCueTrack::ClassInfos.GlobalId) { KaxCueTrack &cue_track = *static_cast(l4); cue_track.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue track: " "%u\n", uint32(cue_track)); tnum = uint32(cue_track); elements_found |= 2; } else if (EbmlId(*l4) == KaxCueClusterPosition::ClassInfos.GlobalId) { KaxCueClusterPosition &cue_cp = *static_cast(l4); cue_cp.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue cluster " "position: %llu\n", uint64(cue_cp)); filepos = mkv_d->segment->GetGlobalPosition(uint64_t(cue_cp)); elements_found |= 4; } else if (EbmlId(*l4) == KaxCueBlockNumber::ClassInfos.GlobalId) { KaxCueBlockNumber &cue_bn = *static_cast(l4); cue_bn.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue block " "number: %llu\n", uint64(cue_bn)); } else if (EbmlId(*l4) == KaxCueCodecState::ClassInfos.GlobalId) { KaxCueCodecState &cue_cs = *static_cast(l4); cue_cs.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue codec " "state: %llu\n", uint64(cue_cs)); } else if (EbmlId(*l4) == KaxCueReference::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue " "reference\n"); elements_found |= 8; l5 = es->FindNextElement(l4->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l5 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l5) == KaxCueRefTime::ClassInfos.GlobalId) { KaxCueRefTime &cue_rt = *static_cast(l5); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue ref " "time: %.3fs\n", ((float)uint64(cue_rt)) * tc_scale / 1000000000.0); } else if (EbmlId(*l5) == KaxCueRefCluster::ClassInfos.GlobalId) { KaxCueRefCluster &cue_rc = *static_cast(l5); cue_rc.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue ref " "cluster: %llu\n", uint64(cue_rc)); } else if (EbmlId(*l5) == KaxCueRefNumber::ClassInfos.GlobalId) { KaxCueRefNumber &cue_rn = *static_cast(l5); cue_rn.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue ref " "number: %llu\n", uint64(cue_rn)); } else if (EbmlId(*l5) == KaxCueRefCodecState::ClassInfos.GlobalId) { KaxCueRefCodecState &cue_rcs = *static_cast(l5); cue_rcs.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + found cue ref " "codec state: %llu\n", uint64(cue_rcs)); } else { mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + unknown " "element, level 5: %s\n", typeid(*l5).name()); } l5->SkipData(static_cast(*es), l5->Generic().Context); delete l5; l5 = es->FindNextElement(l4->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } // while (l5 != NULL) } else mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + unknown element, " "level 4: %s\n", typeid(*l4).name()); if (upper_lvl_el > 0) { // we're coming from l5 upper_lvl_el--; delete l4; l4 = l5; if (upper_lvl_el > 0) break; } else { l4->SkipData(static_cast(*es), l4->Generic().Context); delete l4; l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l4 != NULL) } else mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + unknown element, level 3: " "%s\n", typeid(*l3).name()); if (upper_lvl_el > 0) { // we're coming from l4 upper_lvl_el--; delete l3; l3 = l4; if (upper_lvl_el > 0) break; } else { l3->SkipData(static_cast(*es), l3->Generic().Context); delete l3; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l3 != NULL) // Three elements must have been found in order for this to be a // correct entry: // 1: cue time (timecode) // 2: cue track (tnum) // 4: cue cluster position (filepos) // If 8 is also set, then there was a reference element, and the // current block is not an I frame. If 8 is not set then this is // an I frame. if ((elements_found & 7) == 7) add_index_entry(mkv_d, tnum, filepos, timecode, (elements_found & 8) ? 0 : 1); } else mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] | + unknown element, level 2: " "%s\n", typeid(*l2).name()); if (upper_lvl_el > 0) { // we're coming from l3 upper_lvl_el--; delete l2; l2 = l3; if (upper_lvl_el > 0) break; } else { l2->SkipData(static_cast(*es), l2->Generic().Context); delete l2; l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l2 != NULL) // Debug: dump the index for (i = 0; i < mkv_d->num_indexes; i++) { mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] Index for track %u contains %u " "entries.\n", mkv_d->index[i].tnum, mkv_d->index[i].num_entries); for (k = 0; k < mkv_d->index[i].num_entries; k++) { entry = &mkv_d->index[i].entries[k]; mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] %d: timecode %llu, filepos %llu, " "is key: %s\n", k, entry->timecode, entry->filepos, entry->is_key ? "yes" : "no"); } } mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] \\---- [ parsing cues ] -----------\n"); return 1; } extern "C" int demux_mkv_open(demuxer_t *demuxer) { unsigned char signature[4]; stream_t *s; demux_packet_t *dp; mkv_demuxer_t *mkv_d; int upper_lvl_el, exit_loop, i; // Elements for different levels EbmlElement *l0 = NULL, *l1 = NULL, *l2 = NULL, *l3 = NULL, *l4 = NULL; EbmlStream *es; mkv_track_t *track; sh_audio_t *sh_a; sh_video_t *sh_v; uint64_t seek_pos, current_pos, cues_pos; int seek_element_is_cue; #ifdef USE_ICONV subcp_open(); #endif s = demuxer->stream; stream_seek(s, s->start_pos); memset(signature, 0, 4); stream_read(s, (char *)signature, 4); if ((signature[0] != 0x1A) || (signature[1] != 0x45) || (signature[2] != 0xDF) || (signature[3] != 0xA3)) return 0; stream_seek(s, s->start_pos); try { // structure for storing the demuxer's private data mkv_d = (mkv_demuxer_t *)malloc(sizeof(mkv_demuxer_t)); if (mkv_d == NULL) return 0; memset(mkv_d, 0, sizeof(mkv_demuxer_t)); mkv_d->duration = -1.0; // Create the interface between MPlayer's IO system and // libmatroska's IO system. mkv_d->in = new mpstream_io_callback(demuxer->stream); if (mkv_d->in == NULL) { free_mkv_demuxer(mkv_d); return 0; } mpstream_io_callback &io = *static_cast(mkv_d->in); mkv_d->es = new EbmlStream(io); if (mkv_d->es == NULL) { free_mkv_demuxer(mkv_d); return 0; } es = mkv_d->es; // Find the EbmlHead element. Must be the first one. l0 = es->FindNextID(EbmlHead::ClassInfos, 0xFFFFFFFFL); if (l0 == NULL) { mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] no head found\n"); free_mkv_demuxer(mkv_d); return 0; } // Don't verify its data for now. l0->SkipData(static_cast(*es), l0->Generic().Context); delete l0; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Found the head...\n"); // Next element must be a segment l0 = es->FindNextID(KaxSegment::ClassInfos, 0xFFFFFFFFL); if (l0 == NULL) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] but no segment :(\n"); free_mkv_demuxer(mkv_d); return 0; } if (!(EbmlId(*l0) == KaxSegment::ClassInfos.GlobalId)) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] but no segment :(\n"); free_mkv_demuxer(mkv_d); return 0; } mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] + a segment...\n"); mkv_d->segment = (KaxSegment *)l0; mkv_d->tc_scale = MKVD_TIMECODESCALE; cues_pos = 0; upper_lvl_el = 0; exit_loop = 0; // We've got our segment, so let's find the tracks l1 = es->FindNextElement(l0->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l1 != NULL) { if ((upper_lvl_el != 0) || exit_loop) break; if (EbmlId(*l1) == KaxInfo::ClassInfos.GlobalId) { // General info about this Matroska file mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ segment information...\n"); l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l2 != NULL) { if ((upper_lvl_el != 0) || exit_loop) break; if (EbmlId(*l2) == KaxTimecodeScale::ClassInfos.GlobalId) { KaxTimecodeScale &tc_scale = *static_cast(l2); tc_scale.ReadData(es->I_O()); mkv_d->tc_scale = uint64(tc_scale); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + timecode scale: %llu\n", mkv_d->tc_scale); } else if (EbmlId(*l2) == KaxDuration::ClassInfos.GlobalId) { KaxDuration &duration = *static_cast(l2); duration.ReadData(es->I_O()); mkv_d->duration = float(duration) * mkv_d->tc_scale / 1000000000.0; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + duration: %.3fs\n", mkv_d->duration); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown element@2: %s\n", typeid(*l2).name()); l2->SkipData(static_cast(*es), l2->Generic().Context); delete l2; l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } else if (EbmlId(*l1) == KaxTracks::ClassInfos.GlobalId) { // Yep, we've found our KaxTracks element. Now find all tracks // contained in this segment. mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ segment tracks...\n"); l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l2 != NULL) { if ((upper_lvl_el != 0) || exit_loop) break; if (EbmlId(*l2) == KaxTrackEntry::ClassInfos.GlobalId) { // We actually found a track entry :) We're happy now. mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + a track...\n"); track = new_mkv_track(mkv_d); if (track == NULL) return 0; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l3 != NULL) { if (upper_lvl_el != 0) break; // Now evaluate the data belonging to this track if (EbmlId(*l3) == KaxTrackNumber::ClassInfos.GlobalId) { KaxTrackNumber &tnum = *static_cast(l3); tnum.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Track number: %u\n", uint32(tnum)); track->tnum = uint32(tnum); if (find_track_by_num(mkv_d, track->tnum, track) != NULL) mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] | + WARNING: There's " "more than one track with the number %u.\n", track->tnum); } else if (EbmlId(*l3) == KaxTrackUID::ClassInfos.GlobalId) { KaxTrackUID &tuid = *static_cast(l3); tuid.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Track UID: %u\n", uint32(tuid)); #if LIBEBML_VERSION >= 000404 } else if (EbmlId(*l3) == KaxTrackDefaultDuration::ClassInfos.GlobalId) { KaxTrackDefaultDuration &def_duration = *static_cast(l3); def_duration.ReadData(es->I_O()); track->v_frate = 1000000000.0 / (float)uint64(def_duration); fprintf(stdout, "[mkv] | + Default duration: %.3fms ( = %.3f " "fps)\n", (float)uint64(def_duration) / 1000000.0, track->v_frate); #endif // LIBEBML_VERSION } else if (EbmlId(*l3) == KaxTrackType::ClassInfos.GlobalId) { KaxTrackType &ttype = *static_cast(l3); ttype.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Track type: "); switch (uint8(ttype)) { case track_audio: mp_msg(MSGT_DEMUX, MSGL_V, "Audio\n"); track->type = 'a'; break; case track_video: mp_msg(MSGT_DEMUX, MSGL_V, "Video\n"); track->type = 'v'; break; case track_subtitle: mp_msg(MSGT_DEMUX, MSGL_V, "Subtitle\n"); track->type = 's'; break; default: mp_msg(MSGT_DEMUX, MSGL_V, "unknown\n"); track->type = '?'; break; } } else if (EbmlId(*l3) == KaxTrackAudio::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Audio track\n"); l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l4 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l4) == KaxAudioSamplingFreq::ClassInfos.GlobalId) { KaxAudioSamplingFreq &freq = *static_cast(l4); freq.ReadData(es->I_O()); track->a_sfreq = float(freq); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Sampling " "frequency: %f\n", track->a_sfreq); } else if (EbmlId(*l4) == KaxAudioChannels::ClassInfos.GlobalId) { KaxAudioChannels &channels = *static_cast(l4); channels.ReadData(es->I_O()); track->a_channels = uint8(channels); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Channels: %u\n", track->a_channels); } else if (EbmlId(*l4) == KaxAudioBitDepth::ClassInfos.GlobalId) { KaxAudioBitDepth &bps = *static_cast(l4); bps.ReadData(es->I_O()); track->a_bps = uint8(bps); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Bit depth: %u\n", track->a_bps); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown " "element@4: %s\n", typeid(*l4).name()); l4->SkipData(static_cast(*es), l4->Generic().Context); delete l4; l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } // while (l4 != NULL) } else if (EbmlId(*l3) == KaxTrackVideo::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Video track\n"); l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l4 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l4) == KaxVideoPixelWidth::ClassInfos.GlobalId) { KaxVideoPixelWidth &width = *static_cast(l4); width.ReadData(es->I_O()); track->v_width = uint16(width); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Pixel width: %u\n", track->v_width); } else if (EbmlId(*l4) == KaxVideoPixelHeight::ClassInfos.GlobalId) { KaxVideoPixelHeight &height = *static_cast(l4); height.ReadData(es->I_O()); track->v_height = uint16(height); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Pixel height: " "%u\n", track->v_height); } else if (EbmlId(*l4) == KaxVideoDisplayWidth::ClassInfos.GlobalId) { KaxVideoDisplayWidth &width = *static_cast(l4); width.ReadData(es->I_O()); track->v_dwidth = uint16(width); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Display width: " "%u\n", track->v_dwidth); } else if (EbmlId(*l4) == KaxVideoDisplayHeight::ClassInfos.GlobalId) { KaxVideoDisplayHeight &height = *static_cast(l4); height.ReadData(es->I_O()); track->v_dheight = uint16(height); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Display height: " "%u\n", track->v_dheight); } else if (EbmlId(*l4) == KaxVideoFrameRate::ClassInfos.GlobalId) { // For older files. KaxVideoFrameRate &framerate = *static_cast(l4); framerate.ReadData(es->I_O()); track->v_frate = float(framerate); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Frame rate: %f\n", float(framerate)); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown " "element@4: %s\n", typeid(*l4).name()); l4->SkipData(static_cast(*es), l4->Generic().Context); delete l4; l4 = es->FindNextElement(l3->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } // while (l4 != NULL) } else if (EbmlId(*l3) == KaxCodecID::ClassInfos.GlobalId) { KaxCodecID &codec_id = *static_cast(l3); codec_id.ReadData(es->I_O()); #if LIBEBML_VERSION >= 000404 mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Codec ID: %s\n", string(codec_id).c_str()); track->codec_id = strdup(string(codec_id).c_str()); #else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Codec ID: %s\n", &binary(codec_id)); track->codec_id = strdup((char *)&binary(codec_id)); #endif // LIBEBML_VERSION } else if (EbmlId(*l3) == KaxCodecPrivate::ClassInfos.GlobalId) { KaxCodecPrivate &c_priv = *static_cast(l3); c_priv.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + CodecPrivate, length " "%llu\n", c_priv.GetSize()); track->private_size = c_priv.GetSize(); if (track->private_size > 0) { track->private_data = malloc(track->private_size); if (track->private_data == NULL) return 0; memcpy(track->private_data, c_priv.GetBuffer(), track->private_size); } } else if (EbmlId(*l3) == KaxTrackFlagDefault::ClassInfos.GlobalId) { KaxTrackFlagDefault &f_default = *static_cast(l3); f_default.ReadData(es->I_O()); track->default_track = uint32(f_default); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Default flag: %u\n", track->default_track); } else if (EbmlId(*l3) == KaxTrackLanguage::ClassInfos.GlobalId) { KaxTrackLanguage &language = *static_cast(l3); language.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + Language: %s\n", string(language).c_str()); if (track->language != NULL) free(track->language); track->language = strdup(string(language).c_str()); } else if ((!(EbmlId(*l3) == KaxTrackFlagLacing::ClassInfos.GlobalId)) && (!(EbmlId(*l3) == KaxTrackMinCache::ClassInfos.GlobalId)) && (!(EbmlId(*l3) == KaxTrackMaxCache::ClassInfos.GlobalId))) mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown element@3: " "%s\n", typeid(*l3).name()); if (upper_lvl_el > 0) { // we're coming from l4 upper_lvl_el--; delete l3; l3 = l4; if (upper_lvl_el > 0) break; } else { l3->SkipData(static_cast(*es), l3->Generic().Context); delete l3; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l3 != NULL) } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown element@2: %s\n", typeid(*l2).name()); if (upper_lvl_el > 0) { // we're coming from l3 upper_lvl_el--; delete l2; l2 = l3; if (upper_lvl_el > 0) break; } else { l2->SkipData(static_cast(*es), l2->Generic().Context); delete l2; l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l2 != NULL) } else if (EbmlId(*l1) == KaxSeekHead::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ found seek head\n"); l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l2 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l2) == KaxSeek::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + seek entry\n"); seek_pos = 0; seek_element_is_cue = 0; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l3 != NULL) { if (upper_lvl_el != 0) break; if (EbmlId(*l3) == KaxSeekID::ClassInfos.GlobalId) { binary *b; int s; KaxSeekID &seek_id = static_cast(*l3); seek_id.ReadData(es->I_O()); b = seek_id.GetBuffer(); s = seek_id.GetSize(); EbmlId id(b, s); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + seek ID: "); for (i = 0; i < s; i++) mp_msg(MSGT_DEMUX, MSGL_V, "0x%02x ", ((unsigned char *)b)[i]); mp_msg(MSGT_DEMUX, MSGL_V, "(%s)\n", (id == KaxInfo::ClassInfos.GlobalId) ? "KaxInfo" : (id == KaxCluster::ClassInfos.GlobalId) ? "KaxCluster" : (id == KaxTracks::ClassInfos.GlobalId) ? "KaxTracks" : (id == KaxCues::ClassInfos.GlobalId) ? "KaxCues" : (id == KaxAttachements::ClassInfos.GlobalId) ? "KaxAttachements" : (id == KaxChapters::ClassInfos.GlobalId) ? "KaxChapters" : "unknown"); if (id == KaxCues::ClassInfos.GlobalId) seek_element_is_cue = 1; } else if (EbmlId(*l3) == KaxSeekPosition::ClassInfos.GlobalId) { KaxSeekPosition &kax_seek_pos = static_cast(*l3); kax_seek_pos.ReadData(es->I_O()); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + seek position: %llu\n", uint64(kax_seek_pos)); seek_pos = uint64(kax_seek_pos); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown element, " "level 3: %s\n", typeid(*l3).name()); l3->SkipData(static_cast(*es), l3->Generic().Context); delete l3; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } // while (l3 != NULL) if (!mkv_d->cues_found && (seek_pos > 0) && seek_element_is_cue && (s->end_pos != 0)) cues_pos = mkv_d->segment->GetGlobalPosition(seek_pos); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + unknown element, level 2: " "%s\n", typeid(*l2).name()); if (upper_lvl_el > 0) { // we're coming from l3 upper_lvl_el--; delete l2; l2 = l3; if (upper_lvl_el > 0) break; } else { l2->SkipData(static_cast(*es), l2->Generic().Context); delete l2; l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l2 != NULL) } else if ((EbmlId(*l1) == KaxCues::ClassInfos.GlobalId) && !mkv_d->cues_found) { // If the cues are up front then by all means read them now! current_pos = io.getFilePointer(); io.setFilePointer(l1->GetElementPosition()); mkv_d->cues_found = parse_cues(mkv_d); stream_reset(s); io.setFilePointer(current_pos); } else if (EbmlId(*l1) == KaxCluster::ClassInfos.GlobalId) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ found cluster, headers are " "parsed completely :)\n"); add_cluster_position(mkv_d, l1->GetElementPosition()); mkv_d->saved_l1 = l1; exit_loop = 1; } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] |+ unknown element@1: %s\n", typeid(*l1).name()); if (exit_loop) // we've found the first cluster, so get out break; if (upper_lvl_el > 0) { // we're coming from l2 upper_lvl_el--; delete l1; l1 = l2; if (upper_lvl_el > 0) break; } else { l1->SkipData(static_cast(*es), l1->Generic().Context); delete l1; l1 = es->FindNextElement(l0->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l1 != NULL) if (!exit_loop) { free_mkv_demuxer(mkv_d); return 0; } // If we have found an entry for the cues in the meta seek data but no // cues at the front of the file then read them now. This way the // timecode scale will have been initialized correctly. if (cues_pos && !mkv_d->cues_found) { current_pos = io.getFilePointer(); io.setFilePointer(cues_pos); mkv_d->cues_found = parse_cues(mkv_d); if (s->eof) stream_reset(s); io.setFilePointer(current_pos); } } catch (exception &ex) { mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] caught exception\n"); return 0; } if (!check_track_information(mkv_d)) { free_mkv_demuxer(mkv_d); return 0; } track = NULL; if (demuxer->video->id == -1) { // Automatically select a video track. // Search for a video track that has the 'default' flag set. for (i = 0; i < mkv_d->num_tracks; i++) if ((mkv_d->tracks[i]->type == 'v') && mkv_d->tracks[i]->ok && mkv_d->tracks[i]->default_track) { track = mkv_d->tracks[i]; break; } if (track == NULL) // No track has the 'default' flag set - let's take the first video // track. for (i = 0; i < mkv_d->num_tracks; i++) if ((mkv_d->tracks[i]->type == 'v') && mkv_d->tracks[i]->ok) { track = mkv_d->tracks[i]; break; } } else if (demuxer->video->id != -2) // -2 = no video at all track = find_track_by_num(mkv_d, demuxer->video->id, NULL); if (track) { if (track->ms_compat) { // MS compatibility mode BITMAPINFOHEADER *src, *dst; mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] Will play video track %u\n", track->tnum); sh_v = new_sh_video(demuxer, track->tnum); sh_v->bih = (BITMAPINFOHEADER *)calloc(1, track->private_size); if (sh_v->bih == NULL) { free_mkv_demuxer(mkv_d); return 0; } dst = sh_v->bih; src = (BITMAPINFOHEADER *)track->private_data; dst->biSize = get_uint32(&src->biSize); dst->biWidth = get_uint32(&src->biWidth); dst->biHeight = get_uint32(&src->biHeight); dst->biPlanes = get_uint16(&src->biPlanes); dst->biBitCount = get_uint16(&src->biBitCount); dst->biCompression = get_uint32(&src->biCompression); dst->biSizeImage = get_uint32(&src->biSizeImage); dst->biXPelsPerMeter = get_uint32(&src->biXPelsPerMeter); dst->biYPelsPerMeter = get_uint32(&src->biYPelsPerMeter); dst->biClrUsed = get_uint32(&src->biClrUsed); dst->biClrImportant = get_uint32(&src->biClrImportant); memcpy((char *)dst + sizeof(BITMAPINFOHEADER), (char *)src + sizeof(BITMAPINFOHEADER), track->private_size - sizeof(BITMAPINFOHEADER)); sh_v->format = sh_v->bih->biCompression; sh_v->fps = track->v_frate; sh_v->frametime = 1 / track->v_frate; sh_v->disp_w = track->v_width; sh_v->disp_h = track->v_height; sh_v->aspect = (float)track->v_dwidth / (float)track->v_dheight; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Aspect: %f\n", sh_v->aspect); demuxer->video->id = track->tnum; demuxer->video->sh = sh_v; sh_v->ds = demuxer->video; mkv_d->video = track; } else { mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Native CodecIDs not supported at " "the moment (track %u).\n", track->tnum); demuxer->video->id = -2; } } else { mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] No video track found/wanted.\n"); demuxer->video->id = -2; } track = NULL; if (demuxer->audio->id == -1) { // Automatically select an audio track. // check if the user specified an audio language if (audio_lang != NULL) { track = find_track_by_language(mkv_d, audio_lang, NULL, 'a'); } if (track == NULL) // no audio language specified, or language not found // Search for an audio track that has the 'default' flag set. for (i = 0; i < mkv_d->num_tracks; i++) if ((mkv_d->tracks[i]->type == 'a') && mkv_d->tracks[i]->ok && mkv_d->tracks[i]->default_track) { track = mkv_d->tracks[i]; break; } if (track == NULL) // No track has the 'default' flag set - let's take the first audio // track. for (i = 0; i < mkv_d->num_tracks; i++) if ((mkv_d->tracks[i]->type == 'a') && mkv_d->tracks[i]->ok) { track = mkv_d->tracks[i]; break; } } else if (demuxer->audio->id != -2) // -2 = no audio at all track = find_track_by_num(mkv_d, demuxer->audio->id, NULL); if (track) { mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] Will play audio track %u\n", track->tnum); sh_a = new_sh_audio(demuxer, track->tnum); demuxer->audio->id = track->tnum; demuxer->audio->sh = sh_a; sh_a->ds = demuxer->audio; mkv_d->audio = track; if (track->ms_compat) { sh_a->wf = (WAVEFORMATEX *)calloc(1, track->private_size); if (sh_a->wf == NULL) { free_mkv_demuxer(mkv_d); return 0; } memcpy(sh_a->wf, track->private_data, track->private_size); } else { sh_a->wf = (WAVEFORMATEX *)calloc(1, sizeof(WAVEFORMATEX)); if (sh_a->wf == NULL) { free_mkv_demuxer(mkv_d); return 0; } } sh_a->format = track->a_formattag; sh_a->wf->wFormatTag = track->a_formattag; sh_a->channels = sh_a->wf->nChannels = track->a_channels; sh_a->samplerate = sh_a->wf->nSamplesPerSec = (uint32_t)track->a_sfreq; if (!strcmp(track->codec_id, MKV_A_MP3)) { sh_a->wf->nAvgBytesPerSec = 16000; sh_a->wf->nBlockAlign = 1152; sh_a->wf->wBitsPerSample = 0; sh_a->samplesize = 0; } else if (!strcmp(track->codec_id, MKV_A_AC3)) { sh_a->wf->nAvgBytesPerSec = 16000; sh_a->wf->nBlockAlign = 1536; sh_a->wf->wBitsPerSample = 0; sh_a->samplesize = 0; } else if (!strcmp(track->codec_id, MKV_A_PCM)) { sh_a->wf->nAvgBytesPerSec = sh_a->channels * sh_a->samplerate * 2; sh_a->wf->nBlockAlign = sh_a->wf->nAvgBytesPerSec; sh_a->wf->wBitsPerSample = track->a_bps; sh_a->samplesize = track->a_bps / 8; } else if (track->a_formattag == mmioFOURCC('M', 'P', '4', 'A')) { int profile, srate_idx; sh_a->wf->nAvgBytesPerSec = 16000; sh_a->wf->nBlockAlign = 1024; sh_a->wf->wBitsPerSample = 0; sh_a->samplesize = 0; // Recreate the 'private data' which faad2 uses in its initialization. // A_AAC/MPEG2/MAIN // 0123456789012345 if (!strcmp(&track->codec_id[12], "MAIN")) profile = 0; else if (!strcmp(&track->codec_id[12], "LC")) profile = 1; else if (!strcmp(&track->codec_id[12], "SSR")) profile = 2; else profile = 3; if (92017 <= sh_a->samplerate) srate_idx = 0; else if (75132 <= sh_a->samplerate) srate_idx = 1; else if (55426 <= sh_a->samplerate) srate_idx = 2; else if (46009 <= sh_a->samplerate) srate_idx = 3; else if (37566 <= sh_a->samplerate) srate_idx = 4; else if (27713 <= sh_a->samplerate) srate_idx = 5; else if (23004 <= sh_a->samplerate) srate_idx = 6; else if (18783 <= sh_a->samplerate) srate_idx = 7; else if (13856 <= sh_a->samplerate) srate_idx = 8; else if (11502 <= sh_a->samplerate) srate_idx = 9; else if (9391 <= sh_a->samplerate) srate_idx = 10; else srate_idx = 11; sh_a->codecdata = (unsigned char *)calloc(1, 2); sh_a->codecdata_len = 2; sh_a->codecdata[0] = ((profile + 1) << 3) | ((srate_idx & 0xe) >> 1); sh_a->codecdata[1] = ((srate_idx & 0x1) << 7) | (track->a_channels << 3); } else if (!strcmp(track->codec_id, MKV_A_VORBIS)) { for (i = 0; i < 3; i++) { dp = new_demux_packet(track->header_sizes[i]); memcpy(dp->buffer, track->headers[i], track->header_sizes[i]); dp->pts = 0; dp->flags = 0; ds_add_packet(demuxer->audio, dp); } } } else { mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] No audio track found/wanted.\n"); demuxer->audio->id = -2; } // DO NOT automatically select a subtitle track and behave like DVD // playback: only show subtitles if the user explicitely wants them. track = NULL; if (demuxer->sub->id >= 0) track = find_track_by_num(mkv_d, demuxer->sub->id, NULL); else if (dvdsub_lang != NULL) track = find_track_by_language(mkv_d, dvdsub_lang, NULL); if (track) { if (strcmp(track->codec_id, MKV_S_TEXTASCII) && strcmp(track->codec_id, MKV_S_TEXTUTF8)) mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] Subtitle type '%s' is not " "supported. Track will not be displayed.\n", track->codec_id); else { mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] Will display subtitle track %u\n", track->tnum); mkv_d->subs_track = track; if (!mkv_d->subs.text[0]) { for (i = 0; i < SUB_MAX_TEXT; i++) mkv_d->subs.text[i] = (char *)malloc(256); if (!strcmp(track->codec_id, MKV_S_TEXTUTF8)) sub_utf8 = 1; // Force UTF-8 conversion. } else mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] File does not contain a " "subtitle track with the id %u.\n", demuxer->sub->id); } } if (s->end_pos == 0) demuxer->seekable = 0; else { demuxer->movi_start = s->start_pos; demuxer->movi_end = s->end_pos; demuxer->seekable = 1; } demuxer->priv = mkv_d; return 1; } extern "C" int demux_mkv_fill_buffer(demuxer_t *d) { demux_packet_t *dp; demux_stream_t *ds; mkv_demuxer_t *mkv_d; int upper_lvl_el, exit_loop, found_data, i, delete_element, elements_found; // Elements for different levels EbmlElement *l0 = NULL, *l1 = NULL, *l2 = NULL, *l3 = NULL; EbmlStream *es; KaxBlock *block; int64_t block_duration, block_ref1, block_ref2; mkv_d = (mkv_demuxer_t *)d->priv; es = mkv_d->es; l0 = mkv_d->segment; // End of stream if (mkv_d->saved_l1 == NULL) return 0; exit_loop = 0; upper_lvl_el = 0; l1 = mkv_d->saved_l1; mkv_d->saved_l1 = NULL; found_data = 0; try { // The idea is not to handle a complete KaxCluster with each call to // demux_mkv_fill_buffer because those might be rather big. while (l1 != NULL) { if ((upper_lvl_el != 0) || exit_loop) break; if (EbmlId(*l1) == KaxCluster::ClassInfos.GlobalId) { mkv_d->cluster = (KaxCluster *)l1; if (found_data) { mkv_d->saved_l1 = l1; break; } if (mkv_d->saved_l2 != NULL) { l2 = mkv_d->saved_l2; mkv_d->saved_l2 = NULL; } else l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l2 != NULL) { if (upper_lvl_el != 0) break; // Handle at least one data packets in one call to // demux_mkv_fill_buffer - but abort if we have found that. if (found_data >= 1) { mkv_d->saved_l2 = l2; mkv_d->saved_l1 = l1; exit_loop = 1; break; } if (EbmlId(*l2) == KaxClusterTimecode::ClassInfos.GlobalId) { KaxClusterTimecode &ctc = *static_cast(l2); ctc.ReadData(es->I_O()); mkv_d->cluster_tc = uint64(ctc); #if LIBEBML_VERSION >= 000404 mkv_d->cluster->InitTimecode(mkv_d->cluster_tc, mkv_d->tc_scale); #else mkv_d->cluster->InitTimecode(mkv_d->cluster_tc); #endif // LIBEBML_VERSION } else if (EbmlId(*l2) == KaxBlockGroup::ClassInfos.GlobalId) { block = NULL; block_duration = -1; block_ref1 = 0; block_ref2 = 0; elements_found = 0; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l3 != NULL) { delete_element = 1; if (upper_lvl_el > 0) break; if (EbmlId(*l3) == KaxBlock::ClassInfos.GlobalId) { block = static_cast(l3); block->ReadData(es->I_O()); block->SetParent(*mkv_d->cluster); delete_element = 0; elements_found |= 1; } else if (EbmlId(*l3) == KaxBlockDuration::ClassInfos.GlobalId) { KaxBlockDuration &duration = *static_cast(l3); duration.ReadData(es->I_O()); block_duration = (int64_t)uint64(duration); elements_found |= 2; } else if (EbmlId(*l3) == KaxReferenceBlock::ClassInfos.GlobalId) { KaxReferenceBlock &ref = *static_cast(l3); ref.ReadData(es->I_O()); if (block_ref1 == 0) { block_ref1 = int64(ref); elements_found |= 4; } else { block_ref2 = int64(ref); elements_found |= 8; } } l3->SkipData(static_cast(*es), l3->Generic().Context); if (delete_element) delete l3; l3 = es->FindNextElement(l2->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } // while (l3 != NULL) if (block != NULL) { // Clear the subtitles if they're obsolete now. if ((mkv_d->clear_subs_at > 0) && (mkv_d->clear_subs_at <= (block->GlobalTimecode() / 1000000))) { mkv_d->subs.lines = 0; vo_sub = &mkv_d->subs; vo_osd_changed(OSDTYPE_SUBTITLE); mkv_d->clear_subs_at = 0; } ds = NULL; if ((mkv_d->video != NULL) && (mkv_d->video->tnum == block->TrackNum())) ds = d->video; else if ((mkv_d->audio != NULL) && (mkv_d->audio->tnum == block->TrackNum())) ds = d->audio; if (!mkv_d->skip_to_keyframe || // Not skipping is ok. (((elements_found & 4) == 0) && // It's a key frame. (ds != NULL) && // Corresponding track found (ds == d->video))) { // track is our video track if ((ds != NULL) && ((block->GlobalTimecode() / 1000000) >= (uint64_t)mkv_d->skip_to_timecode)) { for (i = 0; i < (int)block->NumberFrames(); i++) { DataBuffer &data = block->GetBuffer(i); dp = new_demux_packet(data.Size()); memcpy(dp->buffer, data.Buffer(), data.Size()); dp->pts = mkv_d->last_pts; dp->flags = (elements_found & 4) == 0 ? 1 : 0; // keyframe ds_add_packet(ds, dp); found_data++; } mkv_d->skip_to_keyframe = 0; mkv_d->skip_to_timecode = 0; } else if ((mkv_d->subs_track != NULL) && (mkv_d->subs_track->tnum == block->TrackNum())) handle_subtitles(d, block, block_duration); d->filepos = mkv_d->in->getFilePointer(); mkv_d->last_pts = (float)block->GlobalTimecode() / 1000000000.0; mkv_d->last_filepos = d->filepos; } delete block; } // block != NULL } if (upper_lvl_el > 0) { // we're coming from l3 upper_lvl_el--; delete l2; l2 = l3; if (upper_lvl_el > 0) break; } else { l2->SkipData(static_cast(*es), l2->Generic().Context); delete l2; l2 = es->FindNextElement(l1->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } // while (l2 != NULL) } else if (EbmlId(*l1) == KaxCues::ClassInfos.GlobalId) return 0; else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] Unknown element@1: %s (stream " "position %llu)\n", typeid(*l1).name(), l1->GetElementPosition()); if (exit_loop) break; if (upper_lvl_el > 0) { // we're coming from l2 upper_lvl_el--; delete l1; l1 = l2; if (upper_lvl_el > 0) break; } else { l1->SkipData(static_cast(*es), l1->Generic().Context); delete l1; l1 = es->FindNextElement(l0->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); if ((l1 != NULL) && (EbmlId(*l1) == KaxCluster::ClassInfos.GlobalId)) add_cluster_position(mkv_d, l1->GetElementPosition()); } } // while (l1 != NULL) } catch (exception ex) { mp_msg(MSGT_DEMUX, MSGL_ERR, "[mkv] exception caught\n"); return 0; } if (found_data) return 1; return 0; } extern "C" void resync_audio_stream(sh_audio_t *sh_audio); extern "C" void demux_mkv_seek(demuxer_t *demuxer, float rel_seek_secs, int flags) { int i, k, upper_lvl_el; mkv_demuxer_t *mkv_d = (mkv_demuxer_t *)demuxer->priv; int64_t target_timecode, target_filepos = 0, min_diff, diff, current_pos; int64_t cluster_pos; mkv_track_index_t *index; mkv_index_entry_t *entry; EbmlElement *l1; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] SEEK, relss: %.3f, flags: %d\n", rel_seek_secs, flags); if (!mkv_d->cues_found && !mkv_d->cues_searched) { // We've not found an index so far. So let's skip over all level 1 // elements until we either hit another segment, the end of the file // or - suprise - some cues. current_pos = mkv_d->in->getFilePointer(); // Skip the data but do not delete the element! This is our current // cluster, and we need it later on in demux_mkv_fill_buffer. l1 = mkv_d->saved_l1; l1->SkipData(static_cast(*mkv_d->es), l1->Generic().Context); l1 = mkv_d->es->FindNextElement(mkv_d->segment->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); while (l1 != NULL) { if (upper_lvl_el) break; if (EbmlId(*l1) == KaxCues::ClassInfos.GlobalId) { mkv_d->in->setFilePointer(l1->GetElementPosition()); delete l1; mkv_d->cues_found = parse_cues(mkv_d); break; } else { if (EbmlId(*l1) == KaxCluster::ClassInfos.GlobalId) add_cluster_position(mkv_d, l1->GetElementPosition()); l1->SkipData(static_cast(*mkv_d->es), l1->Generic().Context); delete l1; l1 = mkv_d->es->FindNextElement(mkv_d->segment->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } } if (demuxer->stream->eof) stream_reset(demuxer->stream); mkv_d->in->setFilePointer(current_pos); mkv_d->cues_searched = 1; } if (!(flags & 2)) { // Time in secs if (flags & 1) // Absolute seek target_timecode = 0; else // Relative seek target_timecode = (int64_t)(mkv_d->last_pts * 1000.0); target_timecode += (int64_t)(rel_seek_secs * 1000.0); if (target_timecode < 0) target_timecode = 0; min_diff = 0xFFFFFFFL; // Let's find the entry in the index with the smallest difference // to the wanted timecode. entry = NULL; for (i = 0; i < mkv_d->num_indexes; i++) if (mkv_d->index[i].tnum == mkv_d->video->tnum) { index = &mkv_d->index[i]; for (k = 0; k < index->num_entries; k++) { if (!index->entries[k].is_key) continue; diff = target_timecode - (int64_t)index->entries[k].timecode; if (diff < 0) diff *= -1; if (diff < min_diff) { min_diff = diff; entry = & index->entries[k]; } } break; } if (mkv_d->saved_l1 != NULL) delete mkv_d->saved_l1; if (mkv_d->saved_l2 != NULL) { delete mkv_d->saved_l2; mkv_d->saved_l2 = NULL; } if (entry != NULL) { // We've found an entry. mkv_d->in->setFilePointer(entry->filepos); upper_lvl_el = 0; mkv_d->saved_l1 = mkv_d->es->FindNextElement(mkv_d->segment->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); } else { // We've not found an entry --> no index? target_filepos = (int64_t)(target_timecode * mkv_d->last_filepos / (mkv_d->last_pts * 1000.0)); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] No index entry found. Calculated " "filepos %lld. Old timecode %lld.\n", target_filepos, (int64_t)(mkv_d->last_pts * 1000.0)); // Let's find the nearest cluster so that libebml does not have to // do so much work. cluster_pos = 0; min_diff = 0x0FFFFFFFL; for (i = 0; i < mkv_d->num_cluster_pos; i++) { diff = mkv_d->cluster_positions[i] - target_filepos; if (rel_seek_secs < 0) { if ((diff > 0) && (diff < min_diff)) { cluster_pos = mkv_d->cluster_positions[i]; min_diff = diff; } } else if ((diff < 0 ? -1 * diff : diff) < min_diff) { cluster_pos = mkv_d->cluster_positions[i]; min_diff = diff < 0 ? -1 * diff : diff; } } if (min_diff != 0x0FFFFFFFL) { target_filepos = cluster_pos; mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] New target_filepos because of " "cluster: %lld.\n", target_filepos); } if (target_filepos >= demuxer->movi_end) return; mkv_d->in->setFilePointer(target_filepos); upper_lvl_el = 0; mkv_d->saved_l1 = mkv_d->es->FindNextElement(mkv_d->segment->Generic().Context, upper_lvl_el, 0xFFFFFFFFL, true, 1); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek result: target_timecode %lld, " "did not find an entry. Calculated target_filspos: %lld\n", target_timecode, target_filepos); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek found %p (%s).\n", mkv_d->saved_l1, mkv_d->saved_l1 == NULL ? "null" : typeid(*mkv_d->saved_l1).name()); } if (mkv_d->video != NULL) mkv_d->skip_to_keyframe = 1; if (rel_seek_secs > 0.0) mkv_d->skip_to_timecode = target_timecode; demux_mkv_fill_buffer(demuxer); mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] New timecode: %lld\n", (int64_t)(mkv_d->last_pts * 1000.0)); mkv_d->subs.lines = 0; vo_sub = &mkv_d->subs; vo_osd_changed(OSDTYPE_SUBTITLE); mkv_d->clear_subs_at = 0; if(demuxer->audio->sh != NULL) resync_audio_stream((sh_audio_t *)demuxer->audio->sh); } else mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] seek unsupported flags\n"); } extern "C" void demux_close_mkv(demuxer_t *demuxer) { mkv_demuxer_t *mkv_d = (mkv_demuxer_t *)demuxer->priv; free_mkv_demuxer(mkv_d); #ifdef USE_ICONV subcp_close(); #endif } extern "C" int demux_mkv_control(demuxer_t *demuxer, int cmd, void *arg) { mkv_demuxer_t *mkv_d = (mkv_demuxer_t *)demuxer->priv; switch (cmd) { case DEMUXER_CTRL_GET_TIME_LENGTH: if (mkv_d->duration == -1.0) return DEMUXER_CTRL_DONTKNOW; *((unsigned long *)arg) = (unsigned long)mkv_d->duration; return DEMUXER_CTRL_OK; case DEMUXER_CTRL_GET_PERCENT_POS: if (mkv_d->duration == -1.0) { if (demuxer->movi_start == demuxer->movi_end) return DEMUXER_CTRL_DONTKNOW; *((int *)arg) = (int)((demuxer->filepos - demuxer->movi_start) / ((demuxer->movi_end - demuxer->movi_start) / 100)); return DEMUXER_CTRL_OK; } *((int *)arg) = (int)(100 * mkv_d->last_pts / mkv_d->duration); return DEMUXER_CTRL_OK; default: return DEMUXER_CTRL_NOTIMPL; } } #endif /* HAVE_MATROSKA */