diff options
Diffstat (limited to 'libmpdemux/parse_mp4.c')
| -rw-r--r-- | libmpdemux/parse_mp4.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/libmpdemux/parse_mp4.c b/libmpdemux/parse_mp4.c deleted file mode 100644 index 137ec3e6e7..0000000000 --- a/libmpdemux/parse_mp4.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * MP4 file format parser code - * - * Copyright (C) 2002 Felix Buenemann <atmosfear at users.sourceforge.net> - * Code inspired by libmp4 from http://mpeg4ip.sourceforge.net/. - * - * This file is part of MPlayer. - * - * MPlayer 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. - * - * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <stdio.h> -#include <inttypes.h> -#include <stdlib.h> -#include "parse_mp4.h" -#include "mp_msg.h" -#include "stream/stream.h" - -//#define MP4_DUMPATOM - -#define MP4_DL MSGL_V -#define freereturn(a,b) free(a); return b - -static int mp4_read_descr_len(stream_t *s) -{ - uint8_t b; - uint8_t numBytes = 0; - uint32_t length = 0; - - do { - b = stream_read_char(s); - numBytes++; - length = (length << 7) | (b & 0x7F); - } while ((b & 0x80) && numBytes < 4); - - //printf("MP4 read desc len: %d\n", length); - return length; -} - -/* parse the data part of MP4 esds atoms */ -int mp4_parse_esds(unsigned char *data, int datalen, esds_t *esds) { - /* create memory stream from data */ - stream_t *s = new_memory_stream(data, datalen); - uint16_t len; -#ifdef MP4_DUMPATOM - {int i; - printf("ESDS Dump (%dbyte):\n", datalen); - for(i = 0; i < datalen; i++) - printf("%02X ", data[i]); - printf("\nESDS Dumped\n");} -#endif - memset(esds, 0, sizeof(esds_t)); - - esds->version = stream_read_char(s); - esds->flags = stream_read_int24(s); - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 version: %d flags: 0x%06X\n", - esds->version, esds->flags); - - /* get and verify ES_DescrTag */ - if (stream_read_char(s) == MP4ESDescrTag) { - /* read length */ - len = mp4_read_descr_len(s); - - esds->ESId = stream_read_word(s); - esds->streamPriority = stream_read_char(s); - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 ES Descriptor (%dBytes):\n" - " -> ESId: %d\n" - " -> streamPriority: %d\n", - len, esds->ESId, esds->streamPriority); - - if (len < (5 + 15)) { - freereturn(s,1); - } - } else { - esds->ESId = stream_read_word(s); - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 ES Descriptor (%dBytes):\n" - " -> ESId: %d\n", 2, esds->ESId); - } - - /* get and verify DecoderConfigDescrTab */ - if (stream_read_char(s) != MP4DecConfigDescrTag) { - freereturn(s,1); - } - - /* read length */ - len = mp4_read_descr_len(s); - - esds->objectTypeId = stream_read_char(s); - esds->streamType = stream_read_char(s); - esds->bufferSizeDB = stream_read_int24(s); - esds->maxBitrate = stream_read_dword(s); - esds->avgBitrate = stream_read_dword(s); - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 Decoder Config Descriptor (%dBytes):\n" - " -> objectTypeId: %d\n" - " -> streamType: 0x%02X\n" - " -> bufferSizeDB: 0x%06X\n" - " -> maxBitrate: %.3fkbit/s\n" - " -> avgBitrate: %.3fkbit/s\n", - len, esds->objectTypeId, esds->streamType, - esds->bufferSizeDB, esds->maxBitrate/1000.0, - esds->avgBitrate/1000.0); - - esds->decoderConfigLen=0; - - if (len < 15) { - freereturn(s,0); - } - - /* get and verify DecSpecificInfoTag */ - if (stream_read_char(s) != MP4DecSpecificDescrTag) { - freereturn(s,0); - } - - /* read length */ - esds->decoderConfigLen = len = mp4_read_descr_len(s); - - esds->decoderConfig = malloc(esds->decoderConfigLen); - if (esds->decoderConfig) { - stream_read(s, esds->decoderConfig, esds->decoderConfigLen); - } else { - esds->decoderConfigLen = 0; - } - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 Decoder Specific Descriptor (%dBytes)\n", len); - - /* get and verify SLConfigDescrTag */ - if(stream_read_char(s) != MP4SLConfigDescrTag) { - freereturn(s,0); - } - - /* Note: SLConfig is usually constant value 2, size 1Byte */ - esds->SLConfigLen = len = mp4_read_descr_len(s); - esds->SLConfig = malloc(esds->SLConfigLen); - if (esds->SLConfig) { - stream_read(s, esds->SLConfig, esds->SLConfigLen); - } else { - esds->SLConfigLen = 0; - } - mp_msg(MSGT_DEMUX, MP4_DL, - "ESDS MPEG4 Sync Layer Config Descriptor (%dBytes)\n" - " -> predefined: %d\n", len, esds->SLConfig[0]); - - /* will skip the remainder of the atom */ - freereturn(s,0); - -} - -/* cleanup all mem occupied by mp4_parse_esds */ -void mp4_free_esds(esds_t *esds) { - if(esds->decoderConfigLen) - free(esds->decoderConfig); - if(esds->SLConfigLen) - free(esds->SLConfig); -} - -#undef freereturn -#undef MP4_DL |