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isom_write.c
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isom_write.c
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/*
* GPAC - Multimedia Framework C SDK
*
* Authors: Jean Le Feuvre
* Copyright (c) Telecom ParisTech 2000-2012
* All rights reserved
*
* This file is part of GPAC / ISO Media File Format sub-project
*
* GPAC is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* GPAC 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <gpac/internal/isomedia_dev.h>
#include <gpac/constants.h>
#include <gpac/iso639.h>
#if !defined(GPAC_DISABLE_ISOM) && !defined(GPAC_DISABLE_ISOM_WRITE)
GF_Err CanAccessMovie(GF_ISOFile *movie, u32 Mode)
{
if (!movie) return GF_BAD_PARAM;
if (movie->openMode < Mode) return GF_ISOM_INVALID_MODE;
#ifndef GPAC_DISABLE_ISOM_FRAGMENTS
if (movie->FragmentsFlags & GF_ISOM_FRAG_WRITE_READY) return GF_ISOM_INVALID_MODE;
#endif
return GF_OK;
}
static GF_Err unpack_track(GF_TrackBox *trak)
{
GF_Err e = GF_OK;
if (!trak->is_unpacked) {
e = stbl_UnpackOffsets(trak->Media->information->sampleTable);
if (e) return e;
e = stbl_unpackCTS(trak->Media->information->sampleTable);
trak->is_unpacked = GF_TRUE;
}
return e;
}
GF_Err FlushCaptureMode(GF_ISOFile *movie)
{
GF_Err e;
if (movie->openMode != GF_ISOM_OPEN_WRITE) return GF_OK;
/*make sure nothing was added*/
if (gf_bs_get_position(movie->editFileMap->bs)) return GF_OK;
/*add all first boxes*/
if (movie->brand) {
e = gf_isom_box_size((GF_Box *)movie->brand);
if (e) return e;
e = gf_isom_box_write((GF_Box *)movie->brand, movie->editFileMap->bs);
if (e) return e;
}
if (movie->pdin) {
e = gf_isom_box_size((GF_Box *)movie->pdin);
if (e) return e;
e = gf_isom_box_write((GF_Box *)movie->pdin, movie->editFileMap->bs);
if (e) return e;
}
/*we have a trick here: the data will be stored on the fly, so the first
thing in the file is the MDAT. As we don't know if we have a large file (>4 GB) or not
do as if we had one and write 16 bytes: 4 (type) + 4 (size) + 8 (largeSize)...*/
gf_bs_write_int(movie->editFileMap->bs, 0, 128);
return GF_OK;
}
static GF_Err CheckNoData(GF_ISOFile *movie)
{
if (movie->openMode != GF_ISOM_OPEN_WRITE) return GF_OK;
if (gf_bs_get_position(movie->editFileMap->bs)) return GF_BAD_PARAM;
return GF_OK;
}
/**************************************************************
File Writing / Editing
**************************************************************/
//quick function to add an IOD/OD to the file if not present (iods is optional)
GF_Err AddMovieIOD(GF_MovieBox *moov, u8 isIOD)
{
GF_Descriptor *od;
GF_ObjectDescriptorBox *iods;
//do we have an IOD ?? If not, create one.
if (moov->iods) return GF_OK;
if (isIOD) {
od = gf_odf_desc_new(GF_ODF_ISOM_IOD_TAG);
} else {
od = gf_odf_desc_new(GF_ODF_ISOM_OD_TAG);
}
if (!od) return GF_OUT_OF_MEM;
((GF_IsomObjectDescriptor *)od)->objectDescriptorID = 1;
iods = (GF_ObjectDescriptorBox *) gf_isom_box_new(GF_ISOM_BOX_TYPE_IODS);
iods->descriptor = od;
return moov_AddBox((GF_Box*)moov, (GF_Box *)iods);
}
//add a track to the root OD
GF_EXPORT
GF_Err gf_isom_add_track_to_root_od(GF_ISOFile *movie, u32 trackNumber)
{
GF_Err e;
GF_ES_ID_Inc *inc;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_insert_moov(movie);
if (!movie->moov->iods) AddMovieIOD(movie->moov, 0);
if (gf_isom_is_track_in_root_od(movie, trackNumber) == 1) return GF_OK;
inc = (GF_ES_ID_Inc *) gf_odf_desc_new(GF_ODF_ESD_INC_TAG);
inc->trackID = gf_isom_get_track_id(movie, trackNumber);
if (!inc->trackID) {
gf_odf_desc_del((GF_Descriptor *)inc);
return movie->LastError;
}
if ( (movie->LastError = gf_isom_add_desc_to_root_od(movie, (GF_Descriptor *)inc) ) ) {
return movie->LastError;
}
gf_odf_desc_del((GF_Descriptor *)inc);
return GF_OK;
}
//remove the root OD
GF_EXPORT
GF_Err gf_isom_remove_root_od(GF_ISOFile *movie)
{
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
if (!movie->moov || !movie->moov->iods) return GF_OK;
gf_isom_box_del((GF_Box *)movie->moov->iods);
movie->moov->iods = NULL;
return GF_OK;
}
//remove a track to the root OD
GF_EXPORT
GF_Err gf_isom_remove_track_from_root_od(GF_ISOFile *movie, u32 trackNumber)
{
GF_List *esds;
GF_ES_ID_Inc *inc;
u32 i;
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
if (!movie->moov) return GF_OK;
if (!gf_isom_is_track_in_root_od(movie, trackNumber)) return GF_OK;
if (!movie->moov->iods) AddMovieIOD(movie->moov, 0);
if (!movie->moov->iods) return GF_OUT_OF_MEM;
switch (movie->moov->iods->descriptor->tag) {
case GF_ODF_ISOM_IOD_TAG:
esds = ((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
break;
case GF_ODF_ISOM_OD_TAG:
esds = ((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->ES_ID_IncDescriptors;
break;
default:
return GF_ISOM_INVALID_FILE;
}
//get the desc
i=0;
while ((inc = (GF_ES_ID_Inc*)gf_list_enum(esds, &i))) {
if (inc->trackID == gf_isom_get_track_id(movie, trackNumber)) {
gf_odf_desc_del((GF_Descriptor *)inc);
gf_list_rem(esds, i-1);
break;
}
}
//we don't remove the iod for P&Ls and other potential info
return GF_OK;
}
GF_EXPORT
GF_Err gf_isom_set_creation_time(GF_ISOFile *movie, u64 time)
{
if (!movie || !movie->moov) return GF_BAD_PARAM;
movie->moov->mvhd->creationTime = time;
movie->moov->mvhd->modificationTime = time;
return GF_OK;
}
GF_EXPORT
GF_Err gf_isom_set_track_creation_time(GF_ISOFile *movie,u32 trackNumber, u64 time)
{
GF_TrackBox *trak;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
trak->Header->creationTime = time;
trak->Header->modificationTime = time;
return GF_OK;
}
//sets the enable flag of a track
GF_EXPORT
GF_Err gf_isom_set_track_enabled(GF_ISOFile *movie, u32 trackNumber, u8 enableTrack)
{
GF_Err e;
GF_TrackBox *trak;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
if (enableTrack) {
trak->Header->flags |= 1;
} else {
trak->Header->flags &= ~1;
}
return GF_OK;
}
GF_EXPORT
GF_Err gf_isom_set_media_language(GF_ISOFile *movie, u32 trackNumber, char *code)
{
GF_Err e;
GF_TrackBox *trak;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
// Old language-storage processing
// if the new code is on 3 chars, we use it
// otherwise, we find the associated 3 chars code and use it
if (strlen(code) == 3) {
memcpy(trak->Media->mediaHeader->packedLanguage, code, sizeof(char)*3);
} else {
s32 lang_idx;
const char *code_3cc;
lang_idx = gf_lang_find(code);
if (lang_idx == -1) {
GF_LOG(GF_LOG_WARNING, GF_LOG_CONTAINER, ("The given code is not a valid one: %s, using 'und' as 3-letter code\n", code));
code_3cc = "und";
} else {
code_3cc = gf_lang_get_3cc(lang_idx);
}
memcpy(trak->Media->mediaHeader->packedLanguage, code_3cc, sizeof(char)*3);
}
// New language-storage processing
// change the code in the extended language box (if any)
// otherwise add an extended language box only if the given code is not 3 chars
{
u32 i, count;
GF_ExtendedLanguageBox *elng;
elng = NULL;
count = gf_list_count(trak->Media->other_boxes);
for (i = 0; i < count; i++) {
GF_Box *box = (GF_Box *)gf_list_get(trak->Media->other_boxes, i);
if (box->type == GF_ISOM_BOX_TYPE_ELNG) {
elng = (GF_ExtendedLanguageBox *)box;
break;
}
}
if (!elng && (strlen(code) != 3)) {
elng = (GF_ExtendedLanguageBox *)gf_isom_box_new(GF_ISOM_BOX_TYPE_ELNG);
if (!count) {
trak->Media->other_boxes = gf_list_new();
}
gf_list_add(trak->Media->other_boxes, elng);
}
if (elng) {
if (elng->extended_language) {
gf_free(elng->extended_language);
}
elng->extended_language = gf_strdup(code);
}
}
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
return GF_OK;
}
static void gf_isom_set_root_iod(GF_ISOFile *movie)
{
GF_IsomInitialObjectDescriptor *iod;
GF_IsomObjectDescriptor *od;
gf_isom_insert_moov(movie);
if (!movie->moov->iods) {
AddMovieIOD(movie->moov, 1);
return;
}
//if OD, switch to IOD
if (movie->moov->iods->descriptor->tag == GF_ODF_ISOM_IOD_TAG) return;
od = (GF_IsomObjectDescriptor *) movie->moov->iods->descriptor;
iod = (GF_IsomInitialObjectDescriptor*)gf_malloc(sizeof(GF_IsomInitialObjectDescriptor));
memset(iod, 0, sizeof(GF_IsomInitialObjectDescriptor));
iod->ES_ID_IncDescriptors = od->ES_ID_IncDescriptors;
od->ES_ID_IncDescriptors = NULL;
//not used in root OD
iod->ES_ID_RefDescriptors = NULL;
iod->extensionDescriptors = od->extensionDescriptors;
od->extensionDescriptors = NULL;
iod->IPMP_Descriptors = od->IPMP_Descriptors;
od->IPMP_Descriptors = NULL;
iod->objectDescriptorID = od->objectDescriptorID;
iod->OCIDescriptors = od->OCIDescriptors;
od->OCIDescriptors = NULL;
iod->tag = GF_ODF_ISOM_IOD_TAG;
iod->URLString = od->URLString;
od->URLString = NULL;
gf_odf_desc_del((GF_Descriptor *) od);
movie->moov->iods->descriptor = (GF_Descriptor *)iod;
}
GF_Err gf_isom_add_desc_to_root_od(GF_ISOFile *movie, GF_Descriptor *theDesc)
{
GF_Err e;
GF_Descriptor *desc, *dupDesc;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_insert_moov(movie);
if (!movie->moov->iods) AddMovieIOD(movie->moov, 0);
if (!movie->moov->iods) return GF_OUT_OF_MEM;
if (theDesc->tag==GF_ODF_IPMP_TL_TAG) gf_isom_set_root_iod(movie);
desc = movie->moov->iods->descriptor;
//the type of desc is handled at the OD/IOD level, we'll be notified
//if the desc is not allowed
switch (desc->tag) {
case GF_ODF_ISOM_IOD_TAG:
case GF_ODF_ISOM_OD_TAG:
//duplicate the desc
e = gf_odf_desc_copy(theDesc, &dupDesc);
if (e) return e;
//add it (MUST BE (I)OD level desc)
movie->LastError = gf_odf_desc_add_desc(desc, dupDesc);
if (movie->LastError) gf_odf_desc_del((GF_Descriptor *)dupDesc);
break;
default:
movie->LastError = GF_ISOM_INVALID_FILE;
break;
}
return movie->LastError;
}
GF_EXPORT
GF_Err gf_isom_set_timescale(GF_ISOFile *movie, u32 timeScale)
{
Double ts_scale;
GF_TrackBox *trak;
u32 i;
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_insert_moov(movie);
if (movie->moov->mvhd->timeScale == timeScale) return GF_OK;
/*rewrite all durations and edit lists*/
ts_scale = timeScale;
ts_scale /= movie->moov->mvhd->timeScale;
movie->moov->mvhd->timeScale = timeScale;
movie->interleavingTime = timeScale;
movie->moov->mvhd->duration = (u64) (s64) ((s64) movie->moov->mvhd->duration * ts_scale);
i=0;
while ((trak = (GF_TrackBox*)gf_list_enum(movie->moov->trackList, &i))) {
trak->Header->duration = (u64) (s64) ((s64) trak->Header->duration * ts_scale);
if (trak->editBox && trak->editBox->editList) {
u32 j, count = gf_list_count(trak->editBox->editList->entryList);
for (j=0; j<count; j++) {
GF_EdtsEntry *ent = (GF_EdtsEntry *)gf_list_get(trak->editBox->editList->entryList, j);
ent->segmentDuration = (u64) (s64) ((s64) ent->segmentDuration * ts_scale);
}
}
}
return GF_OK;
}
GF_EXPORT
GF_Err gf_isom_set_pl_indication(GF_ISOFile *movie, u8 PL_Code, u8 ProfileLevel)
{
GF_IsomInitialObjectDescriptor *iod;
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_set_root_iod(movie);
iod = (GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor;
switch (PL_Code) {
case GF_ISOM_PL_AUDIO:
iod->audio_profileAndLevel = ProfileLevel;
break;
case GF_ISOM_PL_GRAPHICS:
iod->graphics_profileAndLevel = ProfileLevel;
break;
case GF_ISOM_PL_OD:
iod->OD_profileAndLevel = ProfileLevel;
break;
case GF_ISOM_PL_SCENE:
iod->scene_profileAndLevel = ProfileLevel;
break;
case GF_ISOM_PL_VISUAL:
iod->visual_profileAndLevel = ProfileLevel;
break;
case GF_ISOM_PL_INLINE:
iod->inlineProfileFlag = ProfileLevel ? 1 : 0;
break;
}
return GF_OK;
}
GF_Err gf_isom_set_root_od_id(GF_ISOFile *movie, u32 OD_ID)
{
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_insert_moov(movie);
if (!movie->moov->iods) AddMovieIOD(movie->moov, 0);
if (!movie->moov->iods) return GF_OUT_OF_MEM;
switch (movie->moov->iods->descriptor->tag) {
case GF_ODF_ISOM_OD_TAG:
((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->objectDescriptorID = OD_ID;
break;
case GF_ODF_ISOM_IOD_TAG:
((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->objectDescriptorID = OD_ID;
break;
default:
return GF_ISOM_INVALID_FILE;
}
return GF_OK;
}
GF_Err gf_isom_set_root_od_url(GF_ISOFile *movie, char *url_string)
{
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
gf_isom_insert_moov(movie);
if (!movie->moov->iods) AddMovieIOD(movie->moov, 0);
if (!movie->moov->iods) return GF_OUT_OF_MEM;
switch (movie->moov->iods->descriptor->tag) {
case GF_ODF_ISOM_OD_TAG:
if (((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->URLString) gf_free(((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->URLString);
((GF_IsomObjectDescriptor *)movie->moov->iods->descriptor)->URLString = url_string ? gf_strdup(url_string) : NULL;
break;
case GF_ODF_ISOM_IOD_TAG:
if (((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->URLString) gf_free(((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->URLString);
((GF_IsomInitialObjectDescriptor *)movie->moov->iods->descriptor)->URLString = url_string ? gf_strdup(url_string) : NULL;
break;
default:
return GF_ISOM_INVALID_FILE;
}
return GF_OK;
}
//creates a new Track. If trackID = 0, the trackID is chosen by the API
//returns the track number or 0 if error
GF_EXPORT
u32 gf_isom_new_track(GF_ISOFile *movie, u32 trakID, u32 MediaType, u32 TimeScale)
{
GF_Err e;
u64 now;
u8 isHint;
GF_TrackBox *trak;
GF_TrackHeaderBox *tkhd;
GF_MediaBox *mdia;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) {
gf_isom_set_last_error(movie, e);
return 0;
}
gf_isom_insert_moov(movie);
isHint = 0;
//we're creating a hint track... it's the same, but mode HAS TO BE EDIT
if (MediaType == GF_ISOM_MEDIA_HINT) {
// if (movie->openMode != GF_ISOM_OPEN_EDIT) return 0;
isHint = 1;
}
mdia = NULL;
tkhd = NULL;
trak = NULL;
if (trakID) {
//check if we are in ES_ID boundaries
if (!isHint && (trakID > 0xFFFF)) {
gf_isom_set_last_error(movie, GF_BAD_PARAM);
return 0;
}
//here we should look for available IDs ...
if (!RequestTrack(movie->moov, trakID)) return 0;
} else {
trakID = movie->moov->mvhd->nextTrackID;
if (!trakID) trakID = 1;
/*ESIDs are on 16 bits*/
if (! isHint && (trakID > 0xFFFF)) trakID = 1;
while (1) {
if (RequestTrack(movie->moov, trakID)) break;
trakID += 1;
if (trakID == 0xFFFFFFFF) break;
}
if (trakID == 0xFFFFFFFF) {
gf_isom_set_last_error(movie, GF_BAD_PARAM);
return 0;
}
if (! isHint && (trakID > 0xFFFF)) {
gf_isom_set_last_error(movie, GF_BAD_PARAM);
return 0;
}
}
//OK, now create a track...
trak = (GF_TrackBox *) gf_isom_box_new(GF_ISOM_BOX_TYPE_TRAK);
if (!trak) {
gf_isom_set_last_error(movie, GF_OUT_OF_MEM);
return 0;
}
tkhd = (GF_TrackHeaderBox *) gf_isom_box_new(GF_ISOM_BOX_TYPE_TKHD);
if (!tkhd) {
gf_isom_set_last_error(movie, GF_OUT_OF_MEM);
gf_isom_box_del((GF_Box *)trak);
return 0;
}
now = gf_isom_get_mp4time();
tkhd->creationTime = now;
if (!movie->keep_utc)
tkhd->modificationTime = now;
//OK, set up the media trak
e = NewMedia(&mdia, MediaType, TimeScale);
if (e) {
gf_isom_box_del((GF_Box *)mdia);
gf_isom_box_del((GF_Box *)trak);
gf_isom_box_del((GF_Box *)tkhd);
return 0;
}
//OK, add this media to our track
mdia->mediaTrack = trak;
e = trak_AddBox((GF_Box*)trak, (GF_Box *) tkhd);
if (e) goto err_exit;
e = trak_AddBox((GF_Box*)trak, (GF_Box *) mdia);
if (e) goto err_exit;
tkhd->trackID = trakID;
//some default properties for Audio, Visual or private tracks
switch (MediaType) {
case GF_ISOM_MEDIA_VISUAL:
case GF_ISOM_MEDIA_SCENE:
case GF_ISOM_MEDIA_TEXT:
case GF_ISOM_MEDIA_SUBT:
/*320-240 pix in 16.16*/
tkhd->width = 0x01400000;
tkhd->height = 0x00F00000;
break;
case GF_ISOM_MEDIA_AUDIO:
tkhd->volume = 0x0100;
break;
}
mdia->mediaHeader->creationTime = mdia->mediaHeader->modificationTime = now;
trak->Header->creationTime = trak->Header->modificationTime = now;
//OK, add our trak
e = moov_AddBox((GF_Box*)movie->moov, (GF_Box *)trak);
if (e) goto err_exit;
//set the new ID available
if (trakID+1> movie->moov->mvhd->nextTrackID)
movie->moov->mvhd->nextTrackID = trakID+1;
//and return our track number
return gf_isom_get_track_by_id(movie, trakID);
err_exit:
if (tkhd) gf_isom_box_del((GF_Box *)tkhd);
if (trak) gf_isom_box_del((GF_Box *)trak);
if (mdia) gf_isom_box_del((GF_Box *)mdia);
return 0;
}
//Create a new StreamDescription in the file. The URL and URN are used to describe external media
GF_EXPORT
GF_Err gf_isom_new_mpeg4_description(GF_ISOFile *movie,
u32 trackNumber,
GF_ESD *esd,
char *URLname,
char *URNname,
u32 *outDescriptionIndex)
{
GF_TrackBox *trak;
GF_Err e;
u32 dataRefIndex;
GF_ESD *new_esd;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak || !trak->Media ||
!esd || !esd->decoderConfig ||
!esd->slConfig) return GF_BAD_PARAM;
//get or create the data ref
e = Media_FindDataRef(trak->Media->information->dataInformation->dref, URLname, URNname, &dataRefIndex);
if (e) return e;
if (!dataRefIndex) {
e = Media_CreateDataRef(trak->Media->information->dataInformation->dref, URLname, URNname, &dataRefIndex);
if (e) return e;
}
//duplicate our desc
e = gf_odf_desc_copy((GF_Descriptor *)esd, (GF_Descriptor **)&new_esd);
if (e) return e;
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
e = Track_SetStreamDescriptor(trak, 0, dataRefIndex, new_esd, outDescriptionIndex);
if (e) {
gf_odf_desc_del((GF_Descriptor *)new_esd);
return e;
}
if (new_esd->URLString) {
}
return e;
}
//Add samples to a track. Use streamDescriptionIndex to specify the desired stream (if several)
GF_EXPORT
GF_Err gf_isom_add_sample(GF_ISOFile *movie, u32 trackNumber, u32 StreamDescriptionIndex, const GF_ISOSample *sample)
{
GF_Err e;
GF_TrackBox *trak;
GF_SampleEntryBox *entry;
u32 dataRefIndex;
u64 data_offset;
u32 descIndex;
GF_DataEntryURLBox *Dentry;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
e = FlushCaptureMode(movie);
if (e) return e;
e = unpack_track(trak);
if (e) return e;
//OK, add the sample
//1- Get the streamDescriptionIndex and dataRefIndex
//not specified, get the latest used...
descIndex = StreamDescriptionIndex;
if (!StreamDescriptionIndex) {
descIndex = trak->Media->information->sampleTable->currentEntryIndex;
}
e = Media_GetSampleDesc(trak->Media, descIndex, &entry, &dataRefIndex);
if (e) return e;
if (!entry || !dataRefIndex) return GF_BAD_PARAM;
//set the current to this one
trak->Media->information->sampleTable->currentEntryIndex = descIndex;
//get this dataRef and return false if not self contained
Dentry = (GF_DataEntryURLBox*)gf_list_get(trak->Media->information->dataInformation->dref->other_boxes, dataRefIndex - 1);
if (!Dentry || Dentry->flags != 1) return GF_BAD_PARAM;
//Open our data map. We are adding stuff, so use EDIT
e = gf_isom_datamap_open(trak->Media, dataRefIndex, 1);
if (e) return e;
//Get the offset...
data_offset = gf_isom_datamap_get_offset(trak->Media->information->dataHandler);
/*rewrite OD frame*/
if (trak->Media->handler->handlerType == GF_ISOM_MEDIA_OD) {
GF_ISOSample *od_sample = NULL;
e = Media_ParseODFrame(trak->Media, sample, &od_sample);
if (e) return e;
e = Media_AddSample(trak->Media, data_offset, od_sample, descIndex, 0);
if (e) return e;
e = gf_isom_datamap_add_data(trak->Media->information->dataHandler, od_sample->data, od_sample->dataLength);
if (e) return e;
if (od_sample) gf_isom_sample_del(&od_sample);
} else {
e = Media_AddSample(trak->Media, data_offset, sample, descIndex, 0);
if (e) return e;
if (sample->dataLength) {
e = gf_isom_datamap_add_data(trak->Media->information->dataHandler, sample->data, sample->dataLength);
if (e) return e;
}
}
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
return SetTrackDuration(trak);
}
GF_Err gf_isom_add_sample_shadow(GF_ISOFile *movie, u32 trackNumber, GF_ISOSample *sample)
{
GF_Err e;
GF_TrackBox *trak;
GF_ISOSample *prev;
GF_SampleEntryBox *entry;
u32 dataRefIndex;
u64 data_offset;
u32 descIndex;
u32 sampleNum, prevSampleNum;
GF_DataEntryURLBox *Dentry;
Bool offset_times = GF_FALSE;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak || !sample) return GF_BAD_PARAM;
e = FlushCaptureMode(movie);
if (e) return e;
e = unpack_track(trak);
if (e) return e;
e = stbl_findEntryForTime(trak->Media->information->sampleTable, sample->DTS, 0, &sampleNum, &prevSampleNum);
if (e) return e;
/*we need the EXACT match*/
if (!sampleNum) return GF_BAD_PARAM;
prev = gf_isom_get_sample_info(movie, trackNumber, sampleNum, &descIndex, NULL);
if (!prev) return gf_isom_last_error(movie);
/*for conformance*/
if (sample->DTS==prev->DTS) offset_times = GF_TRUE;
gf_isom_sample_del(&prev);
e = Media_GetSampleDesc(trak->Media, descIndex, &entry, &dataRefIndex);
if (e) return e;
if (!entry || !dataRefIndex) return GF_BAD_PARAM;
trak->Media->information->sampleTable->currentEntryIndex = descIndex;
//get this dataRef and return false if not self contained
Dentry = (GF_DataEntryURLBox*)gf_list_get(trak->Media->information->dataInformation->dref->other_boxes, dataRefIndex - 1);
if (!Dentry || Dentry->flags != 1) return GF_BAD_PARAM;
//Open our data map. We are adding stuff, so use EDIT
e = gf_isom_datamap_open(trak->Media, dataRefIndex, 1);
if (e) return e;
data_offset = gf_isom_datamap_get_offset(trak->Media->information->dataHandler);
if (offset_times) sample->DTS += 1;
/*REWRITE ANY OD STUFF*/
if (trak->Media->handler->handlerType == GF_ISOM_MEDIA_OD) {
GF_ISOSample *od_sample = NULL;
e = Media_ParseODFrame(trak->Media, sample, &od_sample);
if (!e) e = Media_AddSample(trak->Media, data_offset, od_sample, descIndex, sampleNum);
if (!e) e = gf_isom_datamap_add_data(trak->Media->information->dataHandler, od_sample->data, od_sample->dataLength);
if (od_sample) gf_isom_sample_del(&od_sample);
} else {
e = Media_AddSample(trak->Media, data_offset, sample, descIndex, sampleNum);
if (!e) e = gf_isom_datamap_add_data(trak->Media->information->dataHandler, sample->data, sample->dataLength);
}
if (e) return e;
if (offset_times) sample->DTS -= 1;
//OK, update duration
e = Media_SetDuration(trak);
if (e) return e;
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
return SetTrackDuration(trak);
}
GF_Err gf_isom_set_sample_rap(GF_ISOFile *movie, u32 trackNumber)
{
GF_SampleTableBox *stbl;
GF_Err e;
GF_TrackBox *trak;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
stbl = trak->Media->information->sampleTable;
if (!stbl->SyncSample) stbl->SyncSample = (GF_SyncSampleBox *) gf_isom_box_new(GF_ISOM_BOX_TYPE_STSS);
return stbl_AddRAP(stbl->SyncSample, stbl->SampleSize->sampleCount);
}
GF_Err gf_isom_append_sample_data(GF_ISOFile *movie, u32 trackNumber, char *data, u32 data_size)
{
GF_Err e;
GF_TrackBox *trak;
GF_SampleEntryBox *entry;
u32 dataRefIndex;
u32 descIndex;
GF_DataEntryURLBox *Dentry;
if (!data_size) return GF_OK;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
if (trak->Media->handler->handlerType == GF_ISOM_MEDIA_OD) return GF_BAD_PARAM;
//OK, add the sample
descIndex = trak->Media->information->sampleTable->currentEntryIndex;
e = Media_GetSampleDesc(trak->Media, descIndex, &entry, &dataRefIndex);
if (e) return e;
if (!entry || !dataRefIndex) return GF_BAD_PARAM;
//get this dataRef and return false if not self contained
Dentry = (GF_DataEntryURLBox*)gf_list_get(trak->Media->information->dataInformation->dref->other_boxes, dataRefIndex - 1);
if (!Dentry || Dentry->flags != 1) return GF_BAD_PARAM;
//Open our data map. We are adding stuff, so use EDIT
e = gf_isom_datamap_open(trak->Media, dataRefIndex, 1);
if (e) return e;
//add the media data
e = gf_isom_datamap_add_data(trak->Media->information->dataHandler, data, data_size);
if (e) return e;
//update data size
return stbl_SampleSizeAppend(trak->Media->information->sampleTable->SampleSize, data_size);
}
//Add sample reference to a track. The SampleOffset is the offset of the data in the referenced file
//you must have created a StreamDescription with URL or URN specifying your referenced file
//the data offset specifies the beginning of the chunk
//Use streamDescriptionIndex to specify the desired stream (if several)
GF_EXPORT
GF_Err gf_isom_add_sample_reference(GF_ISOFile *movie, u32 trackNumber, u32 StreamDescriptionIndex, GF_ISOSample *sample, u64 dataOffset)
{
GF_TrackBox *trak;
GF_SampleEntryBox *entry;
u32 dataRefIndex;
u32 descIndex;
GF_DataEntryURLBox *Dentry;
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
e = unpack_track(trak);
if (e) return e;
//OD is not allowed as a data ref
if (trak->Media->handler->handlerType == GF_ISOM_MEDIA_OD) {
return GF_BAD_PARAM;
}
//OK, add the sample
//1- Get the streamDescriptionIndex and dataRefIndex
//not specified, get the latest used...
descIndex = StreamDescriptionIndex;
if (!StreamDescriptionIndex) {
descIndex = trak->Media->information->sampleTable->currentEntryIndex;
}
e = Media_GetSampleDesc(trak->Media, descIndex, &entry, &dataRefIndex);
if (e) return e;
if (!entry || !dataRefIndex) return GF_BAD_PARAM;
//set the current to this one
trak->Media->information->sampleTable->currentEntryIndex = descIndex;
//get this dataRef and return false if self contained
Dentry =(GF_DataEntryURLBox*) gf_list_get(trak->Media->information->dataInformation->dref->other_boxes, dataRefIndex - 1);
if (Dentry->flags == 1) return GF_BAD_PARAM;
//add the meta data
e = Media_AddSample(trak->Media, dataOffset, sample, descIndex, 0);
if (e) return e;
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
//OK, update duration
e = Media_SetDuration(trak);
if (e) return e;
return SetTrackDuration(trak);
}
//set the duration of the last media sample. If not set, the duration of the last sample is the
//duration of the previous one if any, or 1000 (default value).
GF_EXPORT
GF_Err gf_isom_set_last_sample_duration(GF_ISOFile *movie, u32 trackNumber, u32 duration)
{
GF_TrackBox *trak;
GF_SttsEntry *ent;
GF_TimeToSampleBox *stts;
u64 mdur;
GF_Err e;
e = CanAccessMovie(movie, GF_ISOM_OPEN_WRITE);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
mdur = trak->Media->mediaHeader->duration;
stts = trak->Media->information->sampleTable->TimeToSample;
if (!stts->nb_entries) return GF_BAD_PARAM;
//get the last entry
ent = (GF_SttsEntry*) &stts->entries[stts->nb_entries-1];
mdur -= ent->sampleDelta;
mdur += duration;
//we only have one sample
if (ent->sampleCount == 1) {
ent->sampleDelta = duration;
} else {
if (ent->sampleDelta == duration) return GF_OK;
ent->sampleCount -= 1;
if (stts->nb_entries==stts->alloc_size) {
stts->alloc_size++;
stts->entries = (GF_SttsEntry*)gf_realloc(stts->entries, sizeof(GF_SttsEntry)*stts->alloc_size);
if (!stts->entries) return GF_OUT_OF_MEM;
}
stts->entries[stts->nb_entries].sampleCount = 1;
stts->entries[stts->nb_entries].sampleDelta = duration;
stts->nb_entries++;
//and update the write cache
stts->w_currentSampleNum = trak->Media->information->sampleTable->SampleSize->sampleCount;
}
if (!movie->keep_utc)
trak->Media->mediaHeader->modificationTime = gf_isom_get_mp4time();
trak->Media->mediaHeader->duration = mdur;
return SetTrackDuration(trak);
}
//update a sample data in the media. Note that the sample MUST exists
GF_EXPORT
GF_Err gf_isom_update_sample(GF_ISOFile *movie, u32 trackNumber, u32 sampleNumber, GF_ISOSample *sample, Bool data_only)
{
GF_Err e;
GF_TrackBox *trak;
e = CanAccessMovie(movie, GF_ISOM_OPEN_EDIT);
if (e) return e;
trak = gf_isom_get_track_from_file(movie, trackNumber);
if (!trak) return GF_BAD_PARAM;
e = unpack_track(trak);
if (e) return e;
//block for hint tracks