From 7f54293847bf2a730981606d0e56eadbedc72d82 Mon Sep 17 00:00:00 2001 From: mosu Date: Wed, 22 Oct 2003 17:59:28 +0000 Subject: [PATCH] Added support for additional content encoding (compression, encryption) in general and zlib compression in particular (to be used with VobSubs). git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11230 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/demux_mkv.cpp | 440 ++++++++++++++++++++++++++++++++------- 1 file changed, 360 insertions(+), 80 deletions(-) diff --git a/libmpdemux/demux_mkv.cpp b/libmpdemux/demux_mkv.cpp index 078990240f..bf10c97943 100644 --- a/libmpdemux/demux_mkv.cpp +++ b/libmpdemux/demux_mkv.cpp @@ -19,12 +19,17 @@ extern "C" { #include #include +#include + #include #include #include #include #include #include +#if LIBMATROSKA_VERSION >= 000503 +#include +#endif #include #include #include @@ -44,6 +49,10 @@ extern "C" { #include #include +#ifdef HAVE_ZLIB +#include +#endif + #include "../mp_msg.h" #include "../help_mp.h" #include "stream.h" @@ -61,10 +70,6 @@ using namespace libebml; using namespace libmatroska; using namespace std; -#ifndef LIBEBML_VERSION -#define LIBEBML_VERSION 000000 -#endif // LIBEBML_VERSION - #if LIBEBML_VERSION < 000500 #error libebml version too old - need at least 0.5.0 #endif @@ -83,6 +88,29 @@ extern char *audio_lang; #define MKV_SUBCOMPRESSION_NONE 0 #define MKV_SUBCOMPRESSION_ZLIB 1 +#define safefree(m) { if (m != NULL) free(m); } +void *safemalloc(int bytes) { + void *dst; + + dst = malloc(bytes); + if (dst == NULL) { + mp_msg(MSGT_DEMUX, MSGL_FATAL, "[mkv] Could not allocate %d bytes of " + "memory.\n", bytes); + exit(1); + } + + return dst; +} + +void *safememdup(const void *src, int bytes) { + void *dst; + + dst = safemalloc(bytes); + memcpy(dst, src, bytes); + + return dst; +} + class mpstream_io_callback: public IOCallback { private: stream_t *s; @@ -149,6 +177,16 @@ typedef struct mkv_track_index { mkv_index_entry_t *entries; } mkv_track_index_t; +typedef struct { + uint32_t order, type, scope; + uint32_t comp_algo; + unsigned char *comp_settings; + uint32_t comp_settings_len; + uint32_t enc_algo, sig_algo, sig_hash_algo; + unsigned char *enc_keyid, *sig_keyid, *signature; + uint32_t enc_keyid_len, sig_keyid_len, signature_len; +} mkv_content_encoding_t; + typedef struct mkv_track { uint32_t tnum, xid; @@ -190,7 +228,13 @@ typedef struct mkv_track { // Stuff for VobSubs mkv_sh_sub_t sh_sub; - int vobsub_compression; + + // Generic content encoding support. + vector *c_encodings; +#ifdef HAVE_ZLIB + z_stream zstream; + bool zstream_initiated; +#endif } mkv_track_t; typedef struct mkv_demuxer { @@ -531,22 +575,22 @@ static void handle_subtitles(demuxer_t *d, KaxBlock *block, int64_t 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++; + t = (mkv_track_t *)safemalloc(sizeof(mkv_track_t)); + 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"); - } + // Set default values. + t->default_track = 1; + t->a_sfreq = 8000.0; + t->a_channels = 1; + t->language = strdup("eng"); + + t->c_encodings = new vector; return t; } @@ -657,17 +701,132 @@ static bool mkv_parse_idx(mkv_track_t *t) { return (things_found == 3); } +static bool reverse_encodings(mkv_track_t *track, unsigned char *&data, + uint32_t &size, uint32_t type) { + int new_size; + unsigned char *new_data, *old_data; + bool modified; + vector::iterator ce; + + if (track->c_encodings->size() == 0) + return false; + + new_data = data; + new_size = size; + modified = false; + for (ce = track->c_encodings->begin(); ce < track->c_encodings->end(); + ce++) { + if ((ce->scope & type) == 0) + continue; + +#ifdef HAVE_ZLIB + if (ce->comp_algo == 0) { + int result; + + old_data = new_data; + new_data = (unsigned char *)safemalloc(new_size * 20); + + track->zstream.next_in = (Bytef *)old_data; + track->zstream.next_out = (Bytef *)new_data; + track->zstream.avail_in = new_size; + track->zstream.avail_out = 20 * new_size; + result = inflate(&track->zstream, Z_FULL_FLUSH); + if (result != Z_OK) { + mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Zlib decompression failed. " + "Result: %d\n", result); + safefree(new_data); + data = old_data; + size = new_size; + return modified; + } + + mp_msg(MSGT_DEMUX, MSGL_DBG2, "[mkv] zlib decompression: from %d to " + "%d\n", new_size, 20 * new_size - track->zstream.avail_out); + new_size = 20 * new_size - track->zstream.avail_out; + + if (modified) + safefree(old_data); + modified = true; + } +#endif + } + + data = new_data; + size = new_size; + + return modified; +} + 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; + mkv_content_encoding_t *ce; BITMAPINFOHEADER *bih; WAVEFORMATEX *wfe; for (track_num = 0; track_num < d->num_tracks; track_num++) { - t = d->tracks[track_num]; + + t->ok = 1; + for (i = 0; i < (int)t->c_encodings->size(); i++) { + ce = &(*t->c_encodings)[i]; + + if (ce->type == 1) { + mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Track number %u has been " + "encrypted and decryption has not yet been implemented. " + "Skipping track.\n", t->tnum); + t->ok = 0; + break; + } + + if (ce->type != 0) { + mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Unknown content encoding type %u " + "for track %u. Skipping track.\n", ce->type, t->tnum); + t->ok = 0; + break; + } + + if (ce->comp_algo == 0) { +#if !defined(HAVE_ZLIB) + mp_msg(MSGT_DEMUX, MSGL_WARN, "Track %u was compressed with zlib but " + "mplayer has not been compiled with support for zlib " + "compression. Skipping track.\n", t->tnum); + t->ok = 0; + break; +#else + if (!t->zstream_initiated) { + t->zstream.zalloc = (alloc_func)0; + t->zstream.zfree = (free_func)0; + t->zstream.opaque = (voidpf)0; + inflateInit(&t->zstream); + t->zstream_initiated = true; + } +#endif + } else { + mp_msg(MSGT_DEMUX, MSGL_WARN, "[mkv] Track %u has been compressed " + "with an unknown/unsupported compression algorithm (%u). " + "Skipping track.\n", t->tnum, ce->comp_algo); + t->ok = 0; + break; + } + } + + if (!t->ok) + continue; + t->ok = 0; + + if (t->private_data != NULL) { + c = (unsigned char *)t->private_data; + length = t->private_size; + if (reverse_encodings(t, c, length, 2)) { + safefree(t->private_data); + t->private_data = c; + t->private_size = length; + } + } + switch (t->type) { case 'v': // video track if (t->codec_id == NULL) @@ -888,7 +1047,7 @@ static int check_track_information(mkv_demuxer_t *d) { break; case 's': - if (!strncmp(t->codec_id, MKV_S_VOBSUB, strlen(MKV_S_VOBSUB))) { + if (!strcmp(t->codec_id, MKV_S_VOBSUB)) { if (mkv_parse_idx(t)) { t->ok = 1; mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] Track ID %u: subtitles (%s), " @@ -920,7 +1079,7 @@ static int check_track_information(mkv_demuxer_t *d) { } static void free_mkv_demuxer(mkv_demuxer_t *d) { - int i; + int i, k; if (d == NULL) return; @@ -931,6 +1090,17 @@ static void free_mkv_demuxer(mkv_demuxer_t *d) { free(d->tracks[i]->private_data); if (d->tracks[i]->language != NULL) free(d->tracks[i]->language); + for (k = 0; k < (int)d->tracks[i]->c_encodings->size(); k++) { + safefree((*d->tracks[i]->c_encodings)[k].comp_settings); + safefree((*d->tracks[i]->c_encodings)[k].enc_keyid); + safefree((*d->tracks[i]->c_encodings)[k].sig_keyid); + safefree((*d->tracks[i]->c_encodings)[k].signature); + } + delete d->tracks[i]->c_encodings; +#ifdef HAVE_ZLIB + if (d->tracks[i]->zstream_initiated) + inflateEnd(&d->tracks[i]->zstream); +#endif free(d->tracks[i]); } @@ -1244,9 +1414,7 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { 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; + mkv_d = (mkv_demuxer_t *)safemalloc(sizeof(mkv_demuxer_t)); memset(mkv_d, 0, sizeof(mkv_demuxer_t)); mkv_d->duration = -1.0; @@ -1356,6 +1524,11 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { KaxCodecPrivate *kcodecpriv; KaxTrackFlagDefault *ktfdefault; KaxTrackLanguage *ktlanguage; +#if LIBMATROSKA_VERSION >= 000503 + KaxContentEncodings *kcencodings; + int kcenc_idx; + vector::iterator ce_ins_it; +#endif mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + a track...\n"); @@ -1507,13 +1680,9 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { mp_msg(MSGT_DEMUX, MSGL_V, "[mkv] | + CodecPrivate, length " "%llu\n", kcodecpriv->GetSize()); track->private_size = kcodecpriv->GetSize(); - if (track->private_size > 0) { - track->private_data = malloc(track->private_size); - if (track->private_data == NULL) - return 0; - memcpy(track->private_data, kcodecpriv->GetBuffer(), - track->private_size); - } + if (track->private_size > 0) + track->private_data = safememdup(kcodecpriv->GetBuffer(), + track->private_size); } ktfdefault = FINDFIRST(ktentry, KaxTrackFlagDefault); @@ -1532,6 +1701,115 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { track->language = strdup(string(*ktlanguage).c_str()); } +#if LIBMATROSKA_VERSION >= 000503 + kcencodings = FINDFIRST(ktentry, KaxContentEncodings); + if (kcencodings != NULL) { + for (kcenc_idx = 0; kcenc_idx < (int)kcencodings->ListSize(); + kcenc_idx++) { + EbmlElement *l3; + + l3 = (*kcencodings)[kcenc_idx]; + if (EbmlId(*l3) == KaxContentEncoding::ClassInfos.GlobalId) { + KaxContentEncoding *kcenc; + KaxContentEncodingOrder *ce_order; + KaxContentEncodingType *ce_type; + KaxContentEncodingScope *ce_scope; + KaxContentCompression *ce_comp; + KaxContentEncryption *ce_enc; + mkv_content_encoding_t enc; + + memset(&enc, 0, sizeof(mkv_content_encoding_t)); + kcenc = static_cast(l3); + + ce_order = FINDFIRST(kcenc, KaxContentEncodingOrder); + if (ce_order != NULL) + enc.order = uint32(*ce_order); + + ce_type = FINDFIRST(kcenc, KaxContentEncodingType); + if (ce_type != NULL) + enc.type = uint32(*ce_type); + + ce_scope = FINDFIRST(kcenc, KaxContentEncodingScope); + if (ce_scope != NULL) + enc.scope = uint32(*ce_scope); + else + enc.scope = 1; + + ce_comp = FINDFIRST(kcenc, KaxContentCompression); + if (ce_comp != NULL) { + KaxContentCompAlgo *cc_algo; + KaxContentCompSettings *cc_settings; + + cc_algo = FINDFIRST(ce_comp, KaxContentCompAlgo); + if (cc_algo != NULL) + enc.comp_algo = uint32(*cc_algo); + + cc_settings = FINDFIRST(ce_comp, KaxContentCompSettings); + if (cc_settings != NULL) { + enc.comp_settings = + (unsigned char *)safememdup(&binary(*cc_settings), + cc_settings->GetSize()); + enc.comp_settings_len = cc_settings->GetSize(); + } + } + + ce_enc = FINDFIRST(kcenc, KaxContentEncryption); + if (ce_enc != NULL) { + KaxContentEncAlgo *ce_ealgo; + KaxContentEncKeyID *ce_ekeyid; + KaxContentSigAlgo *ce_salgo; + KaxContentSigHashAlgo *ce_shalgo; + KaxContentSigKeyID *ce_skeyid; + KaxContentSignature *ce_signature; + + ce_ealgo = FINDFIRST(ce_enc, KaxContentEncAlgo); + if (ce_ealgo != NULL) + enc.enc_algo = uint32(*ce_ealgo); + + ce_ekeyid = FINDFIRST(ce_enc, KaxContentEncKeyID); + if (ce_ekeyid != NULL) { + enc.enc_keyid = + (unsigned char *)safememdup(&binary(*ce_ekeyid), + ce_ekeyid->GetSize()); + enc.enc_keyid_len = ce_ekeyid->GetSize(); + } + + ce_salgo = FINDFIRST(ce_enc, KaxContentSigAlgo); + if (ce_salgo != NULL) + enc.enc_algo = uint32(*ce_salgo); + + ce_shalgo = FINDFIRST(ce_enc, KaxContentSigHashAlgo); + if (ce_shalgo != NULL) + enc.enc_algo = uint32(*ce_shalgo); + + ce_skeyid = FINDFIRST(ce_enc, KaxContentSigKeyID); + if (ce_skeyid != NULL) { + enc.sig_keyid = + (unsigned char *)safememdup(&binary(*ce_skeyid), + ce_skeyid->GetSize()); + enc.sig_keyid_len = ce_skeyid->GetSize(); + } + + ce_signature = FINDFIRST(ce_enc, KaxContentSignature); + if (ce_signature != NULL) { + enc.signature = + (unsigned char *)safememdup(&binary(*ce_signature), + ce_signature->GetSize()); + enc.signature_len = ce_signature->GetSize(); + } + + } + + ce_ins_it = track->c_encodings->begin(); + while ((ce_ins_it != track->c_encodings->end()) && + (enc.order <= (*ce_ins_it).order)) + ce_ins_it++; + track->c_encodings->insert(ce_ins_it, enc); + } + } + } + +#endif ktentry = FINDNEXT(l1, KaxTrackEntry, ktentry); } // while (ktentry != NULL) @@ -1650,11 +1928,8 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { BITMAPINFOHEADER *bih; idesc = NULL; - bih = (BITMAPINFOHEADER *)calloc(1, track->private_size); - if (bih == NULL) { - free_mkv_demuxer(mkv_d); - return 0; - } + bih = (BITMAPINFOHEADER *)safemalloc(track->private_size); + memset(bih, 0, sizeof(BITMAPINFOHEADER)); if (track->ms_compat) { // MS compatibility mode BITMAPINFOHEADER *src; @@ -1816,19 +2091,12 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { 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; - } + if (track->ms_compat) + sh_a->wf = (WAVEFORMATEX *)safememdup(track->private_data, + track->private_size); + else { + sh_a->wf = (WAVEFORMATEX *)safemalloc(sizeof(WAVEFORMATEX)); + memset(sh_a->wf, 0, sizeof(WAVEFORMATEX)); } sh_a->format = track->a_formattag; sh_a->wf->wFormatTag = track->a_formattag; @@ -1866,8 +2134,8 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { track->fix_i_bps = true; track->qt_last_a_pts = 0.0; if (track->private_data != NULL) { - sh_a->codecdata = (unsigned char *)calloc(track->private_size, 1); - memcpy(sh_a->codecdata, track->private_data, track->private_size); + sh_a->codecdata = (unsigned char *)safememdup(track->private_data, + track->private_size); sh_a->codecdata_len = track->private_size; } if (!strcmp(track->codec_id, MKV_A_QDMC)) @@ -1919,7 +2187,7 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { else srate_idx = 11; - sh_a->codecdata = (unsigned char *)calloc(1, 2); + sh_a->codecdata = (unsigned char *)safemalloc(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); @@ -1988,14 +2256,14 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { else if (dvdsub_lang != NULL) track = find_track_by_language(mkv_d, dvdsub_lang, NULL); if (track) { - if (!strncmp(track->codec_id, MKV_S_VOBSUB, strlen(MKV_S_VOBSUB))) { + if (!strcmp(track->codec_id, MKV_S_VOBSUB)) { mp_msg(MSGT_DEMUX, MSGL_INFO, "[mkv] Will display subtitle track %u\n", track->tnum); mkv_d->subs_track = track; mkv_d->subtitle_type = MKV_SUBTYPE_VOBSUB; - demuxer->sub->sh = (mkv_sh_sub_t *)malloc(sizeof(mkv_sh_sub_t)); + demuxer->sub->sh = (mkv_sh_sub_t *)safememdup(&track->sh_sub, + sizeof(mkv_sh_sub_t)); demuxer->sub->id = track->xid; - memcpy(demuxer->sub->sh, &track->sh_sub, sizeof(mkv_sh_sub_t)); } else if (strcmp(track->codec_id, MKV_S_TEXTASCII) && strcmp(track->codec_id, MKV_S_TEXTUTF8) && @@ -2009,7 +2277,7 @@ extern "C" int demux_mkv_open(demuxer_t *demuxer) { 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); + mkv_d->subs.text[i] = (char *)safemalloc(256); if (!strcmp(track->codec_id, MKV_S_TEXTUTF8)) sub_utf8 = 1; // Force UTF-8 conversion. @@ -2095,9 +2363,8 @@ static float real_fix_timestamp(mkv_track_t *track, unsigned char *s, return v_pts; } -static void handle_realvideo(demuxer_t *demuxer, DataBuffer &data, - bool keyframe, int &found_data) { - unsigned char *p; +static void handle_realvideo(demuxer_t *demuxer, unsigned char *data, + uint32_t size, bool keyframe, int &found_data) { dp_hdr_t *hdr; int chunks, isize; mkv_demuxer_t *mkv_d; @@ -2106,12 +2373,11 @@ static void handle_realvideo(demuxer_t *demuxer, DataBuffer &data, mkv_d = (mkv_demuxer_t *)demuxer->priv; ds = demuxer->video; - p = (unsigned char *)data.Buffer(); - chunks = p[0]; - isize = data.Size() - 1 - (chunks + 1) * 8; + chunks = data[0]; + isize = size - 1 - (chunks + 1) * 8; dp = new_demux_packet(sizeof(dp_hdr_t) + isize + 8 * (chunks + 1)); - memcpy(&dp->buffer[sizeof(dp_hdr_t)], &p[1 + (chunks + 1) * 8], isize); - memcpy(&dp->buffer[sizeof(dp_hdr_t) + isize], &p[1], (chunks + 1) * 8); + memcpy(&dp->buffer[sizeof(dp_hdr_t)], &data[1 + (chunks + 1) * 8], isize); + memcpy(&dp->buffer[sizeof(dp_hdr_t) + isize], &data[1], (chunks + 1) * 8); hdr = (dp_hdr_t *)dp->buffer; hdr->len = isize; hdr->chunks = chunks; @@ -2134,15 +2400,15 @@ static void handle_realvideo(demuxer_t *demuxer, DataBuffer &data, found_data++; } -static void handle_realaudio(demuxer_t *demuxer, DataBuffer &data, - bool keyframe, int &found_data) { +static void handle_realaudio(demuxer_t *demuxer, unsigned char *data, + uint32_t size, bool keyframe, int &found_data) { mkv_demuxer_t *mkv_d; demux_packet_t *dp; mkv_d = (mkv_demuxer_t *)demuxer->priv; - dp = new_demux_packet(data.Size()); - memcpy(dp->buffer, data.Buffer(), data.Size()); + dp = new_demux_packet(size); + memcpy(dp->buffer, data, size); if ((mkv_d->audio->ra_pts == mkv_d->last_pts) && !mkv_d->a_skip_to_keyframe) dp->pts = 0; @@ -2370,6 +2636,7 @@ extern "C" int demux_mkv_fill_buffer(demuxer_t *d) { demux_packet_t *dp; demux_stream_t *ds; mkv_demuxer_t *mkv_d; + mkv_track_t *t; int upper_lvl_el, exit_loop, found_data, i, linei, sl; char *texttmp; // Elements for different levels @@ -2490,14 +2757,18 @@ extern "C" int demux_mkv_fill_buffer(demuxer_t *d) { ds = NULL; if ((mkv_d->video != NULL) && - (mkv_d->video->tnum == kblock->TrackNum())) + (mkv_d->video->tnum == kblock->TrackNum())) { ds = d->video; - else if ((mkv_d->audio != NULL) && - (mkv_d->audio->tnum == kblock->TrackNum())) + t = mkv_d->video; + } else if ((mkv_d->audio != NULL) && + (mkv_d->audio->tnum == kblock->TrackNum())) { ds = d->audio; - else if ((mkv_d->subs_track != NULL) && - (mkv_d->subs_track->tnum == kblock->TrackNum())) + t = mkv_d->audio; + } else if ((mkv_d->subs_track != NULL) && + (mkv_d->subs_track->tnum == kblock->TrackNum())) { ds = d->sub; + t = mkv_d->subs_track; + } use_this_block = true; @@ -2564,28 +2835,37 @@ extern "C" int demux_mkv_fill_buffer(demuxer_t *d) { mkv_d->last_filepos = d->filepos; for (i = 0; i < (int)kblock->NumberFrames(); i++) { + unsigned char *re_buffer; + uint32_t re_size; + bool re_modified; DataBuffer &data = kblock->GetBuffer(i); + re_buffer = data.Buffer(); + re_size = data.Size(); + re_modified = reverse_encodings(t, re_buffer, re_size, 1); + if ((ds == d->video) && mkv_d->video->realmedia) - handle_realvideo(d, data, block_bref == 0, + handle_realvideo(d, re_buffer, re_size, block_bref == 0, found_data); else if ((ds == d->audio) && mkv_d->audio->realmedia) - handle_realaudio(d, data, block_bref == 0, + handle_realaudio(d, re_buffer, re_size, block_bref == 0, found_data); else if ((ds == d->sub) && (mkv_d->subtitle_type == MKV_SUBTYPE_VOBSUB)) - mpeg_run(d, (unsigned char *)data.Buffer(), data.Size()); + mpeg_run(d, re_buffer, re_size); else { - dp = new_demux_packet(data.Size()); - memcpy(dp->buffer, data.Buffer(), data.Size()); + dp = new_demux_packet(re_size); + memcpy(dp->buffer, re_buffer, re_size); dp->flags = block_bref == 0 ? 1 : 0; dp->pts = mkv_d->last_pts; ds_add_packet(ds, dp); found_data++; } + if (re_modified) + safefree(re_buffer); } if (ds == d->video) { mkv_d->v_skip_to_keyframe = false;