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126 lines
3.9 KiB
126 lines
3.9 KiB
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/*****************************************************************************
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* mkv.cpp : matroska demuxer
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*****************************************************************************
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* Copyright (C) 2003-2004 VLC authors and VideoLAN
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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* Steve Lhomme <steve.lhomme@free.fr>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#include "mkv.hpp"
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namespace mkv {
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#ifdef HAVE_ZLIB_H
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int32_t zlib_decompress_extra( demux_t * p_demux, mkv_track_t & tk );
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block_t *block_zlib_decompress( vlc_object_t *p_this, block_t *p_in_block );
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#endif
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bool lzo1x_decompress_extra( demux_t * p_demux, mkv_track_t & tk );
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block_t *block_lzo1x_decompress( vlc_object_t *p_this, block_t *p_in_block );
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block_t *MemToBlock( uint8_t *p_mem, size_t i_mem, size_t offset);
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void handle_real_audio(demux_t * p_demux, mkv_track_t * p_tk, block_t * p_blk, vlc_tick_t i_pts);
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block_t *WEBVTT_Repack_Sample(block_t *p_block, bool b_webm = false,
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const uint8_t * = NULL, size_t = 0);
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void send_Block( demux_t * p_demux, mkv_track_t * p_tk, block_t * p_block, unsigned int i_number_frames, int64_t i_duration );
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int UpdatePCR( demux_t * p_demux );
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class ByteReader
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{
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public:
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ByteReader(const uint8_t *reader_, size_t reader_len_):
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reader(reader_), reader_left(reader_len_) {}
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bool skip(size_t bytes) {
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if (error) return false;
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if (reader_left < bytes) {
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reader_left = 0;
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error = true;
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return false;
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}
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reader_left -= bytes;
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reader += bytes;
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return true;
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}
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uint16_t GetBE16() {
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if (error) return 0;
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if (reader_left < 2) {
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reader_left = 0;
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error = true;
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return 0;
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}
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uint16_t v = GetWBE(reader);
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reader_left -= 2;
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reader += 2;
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return v;
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}
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uint32_t GetBE32() {
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if (error) return 0;
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if (reader_left < 4) {
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reader_left = 0;
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error = true;
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return 0;
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}
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uint16_t v = GetDWBE(reader);
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reader_left -= 4;
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reader += 4;
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return v;
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}
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bool hasErrors() const { return error; }
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private:
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const uint8_t *reader;
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size_t reader_left;
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bool error = false;
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};
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#define SIZEOF_REALAUDIO_PRIVATE (4+2+2+12+2+2+4+(3*4)+2+2+2+2)
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class Cook_PrivateTrackData : public PrivateTrackData
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{
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public:
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Cook_PrivateTrackData(const uint8_t *reader, size_t reader_len):
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bytes(reader, reader_len) {}
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~Cook_PrivateTrackData();
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bool Init() override;
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uint32_t coded_frame_size;
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uint16_t i_sub_packet_h;
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uint16_t i_frame_size;
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uint16_t i_subpacket_size;
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uint16_t i_rate;
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uint16_t i_bitspersample;
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uint16_t i_channels;
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std::vector<block_t *> p_subpackets;
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size_t i_subpacket = 0;
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private:
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ByteReader bytes;
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};
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block_t * packetize_wavpack( const mkv_track_t &, uint8_t *, size_t);
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/* helper functions to print the mkv parse tree */
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void MkvTree_va( demux_t& demuxer, int i_level, const char* fmt, va_list args);
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void MkvTree( demux_t & demuxer, int i_level, const char *psz_format, ... );
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} // namespace
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