//Create the movie for WRITE only
GF_ISOFile *gf_isom_create_movie(const char *fileName, u32 OpenMode, const char *tmp_dir)
{
GF_Err e;
GF_ISOFile *mov = gf_isom_new_movie();
if (!mov) return NULL;
mov->openMode = OpenMode;
//then set up our movie
//in WRITE, the input dataMap is ALWAYS NULL
mov->movieFileMap = NULL;
//but we have the edit one
if (OpenMode == GF_ISOM_OPEN_WRITE) {
//THIS IS NOT A TEMP FILE, WRITE mode is used for "live capture"
//this file will be the final file...
mov->fileName = gf_strdup(fileName);
e = gf_isom_datamap_new(fileName, NULL, GF_ISOM_DATA_MAP_WRITE, & mov->editFileMap);
if (e) goto err_exit;
/*brand is set to ISOM by default - it may be touched until sample data is added to track*/
gf_isom_set_brand_info( (GF_ISOFile *) mov, GF_ISOM_BRAND_ISOM, 1);
} else {
//we are in EDIT mode but we are creating the file -> temp file
mov->finalName = (char*)gf_malloc(strlen(fileName) + 1);
strcpy(mov->finalName, fileName);
e = gf_isom_datamap_new("mp4_tmp_edit", tmp_dir, GF_ISOM_DATA_MAP_WRITE, & mov->editFileMap);
if (e) {
gf_isom_set_last_error(NULL, e);
gf_isom_delete_movie(mov);
return NULL;
}
//brand is set to ISOM by default
gf_isom_set_brand_info( (GF_ISOFile *) mov, GF_ISOM_BRAND_ISOM, 1);
}
//create an MDAT
mov->mdat = (GF_MediaDataBox *) mdat_New();
gf_list_add(mov->TopBoxes, mov->mdat);
//default behaviour is capture mode, no interleaving (eg, no rewrite of mdat)
mov->storageMode = GF_ISOM_STORE_FLAT;
return mov;
err_exit:
gf_isom_set_last_error(NULL, e);
if (mov) gf_isom_delete_movie(mov);
return NULL;
}
void V4SceneManager::SaveFile(const char *path)
{
GF_SMEncodeOptions opts;
char rad_name[5000];
/* First dump the scene in a BT file */
strcpy(rad_name, "dump");
m_pSm->scene_graph->RootNode = NULL;
gf_sm_dump(m_pSm, rad_name, 0);
/* Then reload properly (overriding the current SceneManager)*/
GF_SceneLoader load;
memset(&load, 0, sizeof(GF_SceneLoader));
load.fileName = "dump.bt";
load.ctx = m_pSm;
gf_sm_load_init(&load);
gf_sm_load_run(&load);
gf_sm_load_done(&load);
/* Finally encode the file */
GF_ISOFile *mp4 = gf_isom_open(path, GF_ISOM_WRITE_EDIT, NULL);
m_pSm->max_node_id = gf_sg_get_max_node_id(m_pSm->scene_graph);
memset(&opts, 0, sizeof(opts));
opts.flags = GF_SM_LOAD_MPEG4_STRICT;
gf_sm_encode_to_file(m_pSm, mp4, &opts);
gf_isom_set_brand_info(mp4, GF_ISOM_BRAND_MP42, 1);
gf_isom_modify_alternate_brand(mp4, GF_ISOM_BRAND_ISOM, 1);
gf_isom_close(mp4);
}
static int open_file( char *psz_filename, hnd_t *p_handle, cli_output_opt_t *opt )
{
mp4_hnd_t *p_mp4;
*p_handle = NULL;
FILE *fh = fopen( psz_filename, "w" );
if( !fh )
return -1;
FAIL_IF_ERR( !x264_is_regular_file( fh ), "mp4", "MP4 output is incompatible with non-regular file `%s'\n", psz_filename )
fclose( fh );
if( !(p_mp4 = malloc( sizeof(mp4_hnd_t) )) )
return -1;
memset( p_mp4, 0, sizeof(mp4_hnd_t) );
p_mp4->p_file = gf_isom_open( psz_filename, GF_ISOM_OPEN_WRITE, NULL );
p_mp4->b_dts_compress = opt->use_dts_compress;
if( !(p_mp4->p_sample = gf_isom_sample_new()) )
{
close_file( p_mp4, 0, 0 );
return -1;
}
gf_isom_set_brand_info( p_mp4->p_file, GF_ISOM_BRAND_AVC1, 0 );
*p_handle = p_mp4;
return 0;
}
bool EasyMP4Writer::CreateMP4File(char*filename,int flag)
{
SaveFile();
m_audiostartimestamp=-1;
m_videostartimestamp=-1;
if(filename==NULL)
{
char filename2[256]={0};
sprintf_s(filename2,"%d-gpac%d.mp4",time(NULL),rand());
p_file=gf_isom_open(filename2,GF_ISOM_OPEN_WRITE,NULL);//打开文件
}else
p_file=gf_isom_open(filename,GF_ISOM_OPEN_WRITE,NULL);//打开文件
if (p_file==NULL)
{
return false;
}
gf_isom_set_brand_info(p_file,GF_ISOM_BRAND_MP42,0);
if(flag&ZOUTFILE_FLAG_VIDEO)
{
m_videtrackid=gf_isom_new_track(p_file,0,GF_ISOM_MEDIA_VISUAL,1000);
gf_isom_set_track_enabled(p_file,m_videtrackid,1);
}
if(flag&ZOUTFILE_FLAG_AUDIO)
{
m_audiotrackid=gf_isom_new_track(p_file,0,GF_ISOM_MEDIA_AUDIO,1000);
gf_isom_set_track_enabled(p_file,m_audiotrackid,1);
}
return true;
}
static int open_file( char *psz_filename, hnd_t *p_handle, cli_output_opt_t *opt )
{
mp4_hnd_t *p_mp4;
*p_handle = NULL;
FILE *fh = x264_fopen( psz_filename, "w" );
if( !fh )
return -1;
FAIL_IF_ERR( !x264_is_regular_file( fh ), "mp4", "MP4 output is incompatible with non-regular file `%s'\n", psz_filename )
fclose( fh );
if( !(p_mp4 = malloc( sizeof(mp4_hnd_t) )) )
return -1;
memset( p_mp4, 0, sizeof(mp4_hnd_t) );
#ifdef _WIN32
/* GPAC doesn't support Unicode filenames. */
char ansi_filename[MAX_PATH];
FAIL_IF_ERR( !x264_ansi_filename( psz_filename, ansi_filename, MAX_PATH, 1 ), "mp4", "invalid ansi filename\n" )
p_mp4->p_file = gf_isom_open( ansi_filename, GF_ISOM_OPEN_WRITE, NULL );
#else
p_mp4->p_file = gf_isom_open( psz_filename, GF_ISOM_OPEN_WRITE, NULL );
#endif
p_mp4->b_dts_compress = opt->use_dts_compress;
if( !(p_mp4->p_sample = gf_isom_sample_new()) )
{
close_file( p_mp4, 0, 0 );
return -1;
}
gf_isom_set_brand_info( p_mp4->p_file, GF_ISOM_BRAND_AVC1, 0 );
*p_handle = p_mp4;
return 0;
}
GF_Err encode_laser(GF_LoadCompare *lc, char *item_path, GF_ISOFile *mp4, GF_SMEncodeOptions *opts)
{
GF_Err e = GF_OK;
GF_SceneLoader load;
GF_SceneManager *ctx;
GF_SceneGraph *sg;
GF_StatManager *statsman = NULL;
memset(&load, 0, sizeof(GF_SceneLoader));
sg = gf_sg_new();
ctx = gf_sm_new(sg);
load.ctx = ctx;
load.fileName = item_path;
e = gf_sm_load_init(&load);
if (e) {
fprintf(stderr, "Error loading file %s\n", item_path);
} else {
e = gf_sm_load_run(&load);
if (e) {
fprintf(stderr, "Error loading file %s\n", item_path);
} else {
if (opts->auto_qant) {
if (lc->verbose) fprintf(stdout, "Analysing Scene for Automatic Quantization\n");
statsman = gf_sm_stats_new();
e = gf_sm_stats_for_scene(statsman, ctx);
if (!e) {
GF_SceneStatistics *stats = gf_sm_stats_get(statsman);
if (opts->resolution > (s32)stats->frac_res_2d) {
if (lc->verbose) fprintf(stdout, " Given resolution %d is (unnecessarily) too high, using %d instead.\n", opts->resolution, stats->frac_res_2d);
opts->resolution = stats->frac_res_2d;
} else if (stats->int_res_2d + opts->resolution <= 0) {
if (lc->verbose) fprintf(stdout, " Given resolution %d is too low, using %d instead.\n", opts->resolution, stats->int_res_2d - 1);
opts->resolution = 1 - stats->int_res_2d;
}
opts->coord_bits = stats->int_res_2d + opts->resolution;
if (lc->verbose) fprintf(stdout, " Coordinates & Lengths encoded using ");
if (opts->resolution < 0) {
if (lc->verbose) fprintf(stdout, "only the %d most significant bits (of %d).\n", opts->coord_bits, stats->int_res_2d);
} else {
if (lc->verbose) fprintf(stdout, "a %d.%d representation\n", stats->int_res_2d, opts->resolution);
}
if (lc->verbose) fprintf(stdout, " Matrix Scale & Skew Coefficients ");
if (opts->coord_bits < stats->scale_int_res_2d) {
opts->scale_bits = stats->scale_int_res_2d - opts->coord_bits;
if (lc->verbose) fprintf(stdout, "encoded using a %d.8 representation\n", stats->scale_int_res_2d);
} else {
opts->scale_bits = 0;
if (lc->verbose) fprintf(stdout, "not encoded.\n");
}
}
gf_sm_stats_del(statsman);
}
e = gf_sm_encode_to_file(ctx, mp4, opts);
if (e) {
fprintf(stderr, "Error while encoding mp4 file\n");
} else {
e = gf_isom_set_brand_info(mp4, GF_ISOM_BRAND_MP42, 1);
if (!e) e = gf_isom_modify_alternate_brand(mp4, GF_ISOM_BRAND_ISOM, 1);
}
gf_sm_load_done(&load);
}
}
gf_sm_del(ctx);
gf_sg_del(sg);
return e;
}
GF_Err adobize_segment(GF_ISOFile *isom_file, AdobeHDSCtx *ctx)
{
GF_Err e;
GF_BitStream *bs;
GF_AdobeFragRandomAccessBox *afra = (GF_AdobeFragRandomAccessBox*) afra_New();
GF_AfraEntry *ae = (GF_AfraEntry*) gf_calloc(1, sizeof(GF_AfraEntry));
GF_AdobeBootstrapInfoBox *abst = (GF_AdobeBootstrapInfoBox*) abst_New();
GF_AdobeSegmentRunTableBox *asrt = (GF_AdobeSegmentRunTableBox*) asrt_New();
GF_AdobeSegmentRunEntry *asre = (GF_AdobeSegmentRunEntry*) gf_calloc(1, sizeof(GF_AdobeSegmentRunEntry));
GF_AdobeFragmentRunTableBox *afrt = (GF_AdobeFragmentRunTableBox*) afrt_New();
GF_AdobeFragmentRunEntry *afre = (GF_AdobeFragmentRunEntry*) gf_calloc(1, sizeof(GF_AdobeFragmentRunEntry));
u64 init_seg_time = ctx->curr_time;
u32 seg_duration = (u32)gf_isom_get_duration(isom_file);
//update context
ctx->curr_time += seg_duration;
//Adobe specific boxes
//Random Access
afra->type = GF_4CC('a', 'f', 'r', 'a');
afra->version = 0;
afra->flags = 0;
afra->long_ids = 1;
afra->long_offsets = 1;
afra->global_entries = 0;
afra->time_scale = gf_isom_get_timescale(isom_file);
afra->entry_count = 1;
ae->time = init_seg_time;
ae->offset = 3999;
gf_list_add(afra->local_access_entries, ae);
afra->global_entries = 0;
afra->global_entry_count = 0;
e = gf_list_add(isom_file->TopBoxes, afra);
if (e) {
fprintf(stderr, "Impossible to write AFRA box: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
//Bootstrap Info
abst->type = GF_4CC('a', 'b', 's', 't');
abst->version = 0;
abst->flags = 0;
abst->bootstrapinfo_version = 1;
abst->profile = 0;
abst->live = 1;
abst->update = 0;
abst->time_scale = gf_isom_get_timescale(isom_file);
abst->current_media_time = init_seg_time+seg_duration;
abst->smpte_time_code_offset = 0;
abst->movie_identifier = NULL;
abst->drm_data = NULL;
abst->meta_data = NULL;
abst->server_entry_count = 0;
abst->quality_entry_count = 0;
abst->segment_run_table_count = 1;
{
//Segment Run
asrt->type = GF_4CC('a', 's', 'r', 't');
asrt->version = 0;
asrt->flags = 0;
asrt->segment_run_entry_count = 1;
{
asre->first_segment = ctx->segnum;
asre->fragment_per_segment = 1;
}
e = gf_list_add(asrt->segment_run_entry_table, asre);
if (e) {
fprintf(stderr, "Impossible to write ASR Entry: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
}
e = gf_list_add(abst->segment_run_table_entries, asrt);
if (e) {
fprintf(stderr, "Impossible to write ASRT box: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
abst->fragment_run_table_count = 1;
{
//Fragment Run
afrt->type = GF_4CC('a', 'f', 'r', 't');
afrt->version = 0;
afrt->flags = 0;
afrt->timescale = gf_isom_get_timescale(isom_file);
afrt->fragment_run_entry_count = 1;
{
afre->first_fragment = 1;
afre->first_fragment_timestamp = 0;
afre->fragment_duration = seg_duration;
}
e = gf_list_add(afrt->fragment_run_entry_table, afre);
if (e) {
fprintf(stderr, "Impossible to write AFR Entry: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
}
e = gf_list_add(abst->fragment_run_table_entries, afrt);
if (e) {
fprintf(stderr, "Impossible to write AFRT box: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
e = gf_list_add(isom_file->TopBoxes, abst);
if (e) {
fprintf(stderr, "Impossible to write ABST box: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
e = abst_Size((GF_Box*)abst);
if (e) {
fprintf(stderr, "Impossible to compute ABST box size: %s\n", gf_error_to_string(e));
assert(0);
return e;
}
ctx->bootstrap_size = (size_t)abst->size;
ctx->bootstrap = gf_malloc(ctx->bootstrap_size);
bs = gf_bs_new(ctx->bootstrap, ctx->bootstrap_size, GF_BITSTREAM_WRITE);
e = abst_Write((GF_Box*)abst, bs);
if (e) {
fprintf(stderr, "Impossible to code the ABST box: %s\n", gf_error_to_string(e));
assert(0);
gf_bs_del(bs);
return e;
}
gf_bs_del(bs);
//set brands as reversed engineered from f4v files
/*e = gf_isom_reset_alt_brands(isom_file);
if (e) {
fprintf(stderr, "Warning: couldn't reset ISOM brands: %s\n", gf_error_to_string(e));
assert(0);
}*/
gf_isom_set_brand_info(isom_file, GF_4CC('f','4','v',' '), 1);
gf_isom_modify_alternate_brand(isom_file, GF_4CC('i','s','o','m'), 1);
gf_isom_modify_alternate_brand(isom_file, GF_4CC('m','p','4','2'), 1);
gf_isom_modify_alternate_brand(isom_file, GF_4CC('m','4','v',' '), 1);
return GF_OK;
}
