diff options
Diffstat (limited to 'src/mp4ff/mp4ff.c')
-rw-r--r-- | src/mp4ff/mp4ff.c | 430 |
1 files changed, 0 insertions, 430 deletions
diff --git a/src/mp4ff/mp4ff.c b/src/mp4ff/mp4ff.c deleted file mode 100644 index e0bb781e8..000000000 --- a/src/mp4ff/mp4ff.c +++ /dev/null @@ -1,430 +0,0 @@ -/* -** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding -** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com -** -** This program 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. -** -** This program 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. -** -** Any non-GPL usage of this software or parts of this software is strictly -** forbidden. -** -** Commercial non-GPL licensing of this software is possible. -** For more info contact Ahead Software through Mpeg4AAClicense@nero.com. -** -** $Id: mp4ff.c,v 1.15 2004/01/11 15:52:18 menno Exp $ -**/ - -#include <stdlib.h> -#include <string.h> -#include "mp4ffint.h" - -#include "drms.h" - -int64_t mp4ff_get_track_duration_use_offsets(const mp4ff_t *f, const int32_t track); - -mp4ff_t *mp4ff_open_read(mp4ff_callback_t *f) -{ - mp4ff_t *ff = malloc(sizeof(mp4ff_t)); - - memset(ff, 0, sizeof(mp4ff_t)); - - ff->stream = f; - - parse_atoms(ff); - - return ff; -} - -void mp4ff_close(mp4ff_t *ff) -{ - int32_t i; - - for (i = 0; i < ff->total_tracks; i++) - { - if (ff->track[i]) - { - if (ff->track[i]->stsz_table) - free(ff->track[i]->stsz_table); - if (ff->track[i]->stts_sample_count) - free(ff->track[i]->stts_sample_count); - if (ff->track[i]->stts_sample_delta) - free(ff->track[i]->stts_sample_delta); - if (ff->track[i]->stsc_first_chunk) - free(ff->track[i]->stsc_first_chunk); - if (ff->track[i]->stsc_samples_per_chunk) - free(ff->track[i]->stsc_samples_per_chunk); - if (ff->track[i]->stsc_sample_desc_index) - free(ff->track[i]->stsc_sample_desc_index); - if (ff->track[i]->stco_chunk_offset) - free(ff->track[i]->stco_chunk_offset); - if (ff->track[i]->decoderConfig) - free(ff->track[i]->decoderConfig); - if (ff->track[i]->ctts_sample_count) - free(ff->track[i]->ctts_sample_count); - if (ff->track[i]->ctts_sample_offset) - free(ff->track[i]->ctts_sample_offset); -#ifdef ITUNES_DRM - if (ff->track[i]->p_drms) - drms_free(ff->track[i]->p_drms); -#endif - free(ff->track[i]); - } - } - -#ifdef USE_TAGGING - mp4ff_tag_delete(&(ff->tags)); -#endif - - if (ff) free(ff); -} - -static void mp4ff_track_add(mp4ff_t *f) -{ - f->total_tracks++; - - f->track[f->total_tracks - 1] = malloc(sizeof(mp4ff_track_t)); - - memset(f->track[f->total_tracks - 1], 0, sizeof(mp4ff_track_t)); -} - -/* parse atoms that are sub atoms of other atoms */ -int32_t parse_sub_atoms(mp4ff_t *f, const uint64_t total_size) -{ - uint64_t size; - uint8_t atom_type = 0; - uint64_t counted_size = 0; - uint8_t header_size = 0; - - while (counted_size < total_size) - { - size = mp4ff_atom_read_header(f, &atom_type, &header_size); - counted_size += size; - - /* check for end of file */ - if (size == 0) - break; - - /* we're starting to read a new track, update index, - * so that all data and tables get written in the right place - */ - if (atom_type == ATOM_TRAK) - { - mp4ff_track_add(f); - } - - /* parse subatoms */ - if (atom_type < SUBATOMIC) - { - parse_sub_atoms(f, size-header_size); - } else { - mp4ff_atom_read(f, (uint32_t)size, atom_type); - } - } - - return 0; -} - -/* parse root atoms */ -int32_t parse_atoms(mp4ff_t *f) -{ - uint64_t size; - uint8_t atom_type = 0; - uint8_t header_size = 0; - - f->file_size = 0; - - while ((size = mp4ff_atom_read_header(f, &atom_type, &header_size)) != 0) - { - f->file_size += size; - f->last_atom = atom_type; - - if (atom_type == ATOM_MDAT && f->moov_read) - { - /* moov atom is before mdat, we can stop reading when mdat is encountered */ - /* file position will stay at beginning of mdat data */ -// break; - } - - if (atom_type == ATOM_MOOV && size > header_size) - { - f->moov_read = 1; - f->moov_offset = mp4ff_position(f)-header_size; - f->moov_size = size; - } - - /* parse subatoms */ - if (atom_type < SUBATOMIC) - { - parse_sub_atoms(f, size-header_size); - } else { - /* skip this atom */ - mp4ff_set_position(f, mp4ff_position(f)+size-header_size); - } - } - - return 0; -} - -int32_t mp4ff_get_decoder_config(const mp4ff_t *f, const int32_t track, - uint8_t** ppBuf, uint32_t* pBufSize) -{ - if (track >= f->total_tracks) - { - *ppBuf = NULL; - *pBufSize = 0; - return 1; - } - - if (f->track[track]->decoderConfig == NULL || f->track[track]->decoderConfigLen == 0) - { - *ppBuf = NULL; - *pBufSize = 0; - } else { - *ppBuf = malloc(f->track[track]->decoderConfigLen); - if (*ppBuf == NULL) - { - *pBufSize = 0; - return 1; - } - memcpy(*ppBuf, f->track[track]->decoderConfig, f->track[track]->decoderConfigLen); - *pBufSize = f->track[track]->decoderConfigLen; - } - - return 0; -} - -static int32_t mp4ff_get_track_type(const mp4ff_t *f, const int track) -{ - return f->track[track]->type; -} - -int32_t mp4ff_total_tracks(const mp4ff_t *f) -{ - return f->total_tracks; -} - -int32_t mp4ff_time_scale(const mp4ff_t *f, const int32_t track) -{ - return f->track[track]->timeScale; -} - -static uint32_t mp4ff_get_avg_bitrate(const mp4ff_t *f, const int32_t track) -{ - return f->track[track]->avgBitrate; -} - -static uint32_t mp4ff_get_max_bitrate(const mp4ff_t *f, const int32_t track) -{ - return f->track[track]->maxBitrate; -} - -static int64_t mp4ff_get_track_duration(const mp4ff_t *f, const int32_t track) -{ - return f->track[track]->duration; -} - -int64_t mp4ff_get_track_duration_use_offsets(const mp4ff_t *f, const int32_t track) -{ - int64_t duration = mp4ff_get_track_duration(f,track); - if (duration!=-1) - { - int64_t offset = mp4ff_get_sample_offset(f,track,0); - if (offset > duration) duration = 0; - else duration -= offset; - } - return duration; -} - - -int32_t mp4ff_num_samples(const mp4ff_t *f, const int32_t track) -{ - int32_t i; - int32_t total = 0; - - for (i = 0; i < f->track[track]->stts_entry_count; i++) - { - total += f->track[track]->stts_sample_count[i]; - } - return total; -} - - - - -static uint32_t mp4ff_get_sample_rate(const mp4ff_t *f, const int32_t track) -{ - return f->track[track]->sampleRate; -} - -static uint32_t mp4ff_get_channel_count(const mp4ff_t * f,const int32_t track) -{ - return f->track[track]->channelCount; -} - -static uint32_t mp4ff_get_audio_type(const mp4ff_t * f,const int32_t track) -{ - return f->track[track]->audioType; -} - -static int32_t mp4ff_get_sample_duration_use_offsets(const mp4ff_t *f, const int32_t track, const int32_t sample) -{ - int32_t d,o; - d = mp4ff_get_sample_duration(f,track,sample); - if (d!=-1) - { - o = mp4ff_get_sample_offset(f,track,sample); - if (o>d) d = 0; - else d -= o; - } - return d; -} - -int32_t mp4ff_get_sample_duration(const mp4ff_t *f, const int32_t track, const int32_t sample) -{ - int32_t i, co = 0; - - for (i = 0; i < f->track[track]->stts_entry_count; i++) - { - int32_t delta = f->track[track]->stts_sample_count[i]; - if (sample < co + delta) - return f->track[track]->stts_sample_delta[i]; - co += delta; - } - return (int32_t)(-1); -} - -int64_t mp4ff_get_sample_position(const mp4ff_t *f, const int32_t track, const int32_t sample) -{ - int32_t i, co = 0; - int64_t acc = 0; - - for (i = 0; i < f->track[track]->stts_entry_count; i++) - { - int32_t delta = f->track[track]->stts_sample_count[i]; - if (sample < co + delta) - { - acc += f->track[track]->stts_sample_delta[i] * (sample - co); - return acc; - } - else - { - acc += f->track[track]->stts_sample_delta[i] * delta; - } - co += delta; - } - return (int64_t)(-1); -} - -int32_t mp4ff_get_sample_offset(const mp4ff_t *f, const int32_t track, const int32_t sample) -{ - int32_t i, co = 0; - - for (i = 0; i < f->track[track]->ctts_entry_count; i++) - { - int32_t delta = f->track[track]->ctts_sample_count[i]; - if (sample < co + delta) - return f->track[track]->ctts_sample_offset[i]; - co += delta; - } - return 0; -} - -int32_t mp4ff_find_sample(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip) -{ - int32_t i, co = 0; - int64_t offset_total = 0; - mp4ff_track_t * p_track = f->track[track]; - - for (i = 0; i < p_track->stts_entry_count; i++) - { - int32_t sample_count = p_track->stts_sample_count[i]; - int32_t sample_delta = p_track->stts_sample_delta[i]; - int64_t offset_delta = (int64_t)sample_delta * (int64_t)sample_count; - if (offset < offset_total + offset_delta) - { - int64_t offset_fromstts = offset - offset_total; - if (toskip) *toskip = (int32_t)(offset_fromstts % sample_delta); - return co + (int32_t)(offset_fromstts / sample_delta); - } - else - { - offset_total += offset_delta; - } - co += sample_count; - } - return (int32_t)(-1); -} - -static int32_t mp4ff_find_sample_use_offsets(const mp4ff_t *f, const int32_t track, const int64_t offset,int32_t * toskip) -{ - return mp4ff_find_sample(f,track,offset + mp4ff_get_sample_offset(f,track,0),toskip); -} - -int32_t mp4ff_read_sample(mp4ff_t *f, const int32_t track, const int32_t sample, - uint8_t **audio_buffer, uint32_t *bytes) -{ - int32_t result = 0; - - *bytes = mp4ff_audio_frame_size(f, track, sample); - - if (*bytes==0) return 0; - - *audio_buffer = (uint8_t*)malloc(*bytes); - - mp4ff_set_sample_position(f, track, sample); - - result = mp4ff_read_data(f, *audio_buffer, *bytes); - - if (!result) - { - free(*audio_buffer); - *audio_buffer = 0; - return 0; - } - -#ifdef ITUNES_DRM - if (f->track[track]->p_drms != NULL) - { - drms_decrypt(f->track[track]->p_drms, (uint32_t*)*audio_buffer, *bytes); - } -#endif - - return *bytes; -} - - -static int32_t mp4ff_read_sample_v2(mp4ff_t *f, const int track, const int sample,unsigned char *buffer) -{ - int32_t result = 0; - int32_t size = mp4ff_audio_frame_size(f,track,sample); - if (size<=0) return 0; - mp4ff_set_sample_position(f, track, sample); - result = mp4ff_read_data(f,buffer,size); - -#ifdef ITUNES_DRM - if (f->track[track]->p_drms != NULL) - { - drms_decrypt(f->track[track]->p_drms, (uint32_t*)buffer, size); - } -#endif - - return result; -} - -static int32_t mp4ff_read_sample_getsize(mp4ff_t *f, const int track, const int sample) -{ - int32_t temp = mp4ff_audio_frame_size(f, track, sample); - if (temp<0) temp = 0; - return temp; -} |