File: loader_isom.c

package info (click to toggle)
gpac 0.7.1+dfsg1-3
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 33,112 kB
  • sloc: ansic: 454,042; xml: 47,905; cpp: 13,115; sh: 5,548; makefile: 3,401; objc: 321
file content (411 lines) | stat: -rw-r--r-- 12,978 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
/*
 *			GPAC - Multimedia Framework C SDK
 *
 *			Authors: Jean Le Feuvre
 *			Copyright (c) Telecom ParisTech 2000-2012
 *					All rights reserved
 *
 *  This file is part of GPAC / Scene Management 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/scene_manager.h>
#include <gpac/constants.h>
#include <gpac/bifs.h>
#ifndef GPAC_DISABLE_LASER
#include <gpac/laser.h>
#endif



#if !defined(GPAC_DISABLE_ISOM) && !defined(GPAC_DISABLE_LOADER_ISOM)

static void UpdateODCommand(GF_ISOFile *mp4, GF_ODCom *com)
{
	u32 i, j;
	const char *szName;
	char szPath[2048];

	szName = gf_isom_get_filename(mp4);
	if (com->tag == GF_ODF_OD_UPDATE_TAG) {
		GF_ObjectDescriptor *od;
		GF_ODUpdate *odU = (GF_ODUpdate *)com;
		i=0;
		while ((od = (GF_ObjectDescriptor *)gf_list_enum(odU->objectDescriptors, &i))) {
			GF_ESD *esd;
			j=0;
			while ((esd = (GF_ESD *)gf_list_enum(od->ESDescriptors, &j))) {
				Bool import = 1;
				if (esd->URLString) continue;
				switch (esd->decoderConfig->streamType) {
				case GF_STREAM_OD:
					import = 0;
					break;
				case GF_STREAM_SCENE:
					if ((esd->decoderConfig->objectTypeIndication != GPAC_OTI_SCENE_AFX) &&
					        (esd->decoderConfig->objectTypeIndication != GPAC_OTI_SCENE_SYNTHESIZED_TEXTURE)
					   ) {
						import = 0;
					}
					break;
				/*dump the OCR track duration in case the OCR is used by media controls & co*/
				case GF_STREAM_OCR:
				{
					u32 track;
					Double dur;
					GF_MuxInfo *mi = (GF_MuxInfo *) gf_odf_desc_new(GF_ODF_MUXINFO_TAG);
					gf_list_add(esd->extensionDescriptors, mi);
					track = gf_isom_get_track_by_id(mp4, esd->ESID);
					dur = (Double) (s64) gf_isom_get_track_duration(mp4, track);
					dur /= gf_isom_get_timescale(mp4);
					mi->duration = (u32) (dur * 1000);
					import = 0;
				}
				break;
				default:
					break;
				}
				if (import) {
					GF_MuxInfo *mi = (GF_MuxInfo *) gf_odf_desc_new(GF_ODF_MUXINFO_TAG);
					gf_list_add(esd->extensionDescriptors, mi);
					sprintf(szPath, "%s#%d", szName, esd->ESID);
					mi->file_name = gf_strdup(szPath);
					mi->streamFormat = gf_strdup("MP4");
				}
			}
		}
		return;
	}
	if (com->tag == GF_ODF_ESD_UPDATE_TAG) {
		GF_ESD *esd;
		GF_ESDUpdate *esdU = (GF_ESDUpdate *)com;
		i=0;
		while ((esd = (GF_ESD *)gf_list_enum(esdU->ESDescriptors, &i))) {
			Bool import = 1;
			if (esd->URLString) continue;
			switch (esd->decoderConfig->streamType) {
			case GF_STREAM_OD:
				import = 0;
				break;
			case GF_STREAM_SCENE:
				if ((esd->decoderConfig->objectTypeIndication != GPAC_OTI_SCENE_AFX) &&
				        (esd->decoderConfig->objectTypeIndication != GPAC_OTI_SCENE_SYNTHESIZED_TEXTURE)
				   ) {
					import = 0;
				}
				break;
			/*dump the OCR track duration in case the OCR is used by media controls & co*/
			case GF_STREAM_OCR:
			{
				u32 track;
				Double dur;
				GF_MuxInfo *mi = (GF_MuxInfo *) gf_odf_desc_new(GF_ODF_MUXINFO_TAG);
				gf_list_add(esd->extensionDescriptors, mi);
				track = gf_isom_get_track_by_id(mp4, esd->ESID);
				dur = (Double) (s64) gf_isom_get_track_duration(mp4, track);
				dur /= gf_isom_get_timescale(mp4);
				mi->duration = (u32) (dur * 1000);
				import = 0;
			}
			break;
			default:
				break;
			}
			if (import) {
				GF_MuxInfo *mi = (GF_MuxInfo *) gf_odf_desc_new(GF_ODF_MUXINFO_TAG);
				gf_list_add(esd->extensionDescriptors, mi);
				sprintf(szPath, "%s#%d", szName, esd->ESID);
				mi->file_name = gf_strdup(szPath);
				mi->streamFormat = gf_strdup("MP4");
			}
		}
		return;
	}
}

static void mp4_report(GF_SceneLoader *load, GF_Err e, char *format, ...)
{
#ifndef GPAC_DISABLE_LOG
	if (gf_log_tool_level_on(GF_LOG_PARSER, e ? GF_LOG_ERROR : GF_LOG_WARNING)) {
		char szMsg[1024];
		va_list args;
		va_start(args, format);
		vsnprintf(szMsg, 1024, format, args);
		va_end(args);
		GF_LOG((u32) (e ? GF_LOG_ERROR : GF_LOG_WARNING), GF_LOG_PARSER, ("[MP4 Loading] %s\n", szMsg) );
	}
#endif
}

static GF_Err gf_sm_load_run_isom(GF_SceneLoader *load)
{
	GF_Err e;
	FILE *logs;
	u32 i, j, di, nbBifs, nbLaser, nb_samp, samp_done, init_offset;
	GF_StreamContext *sc;
	GF_ESD *esd;
	GF_ODCodec *od_dec;
#ifndef GPAC_DISABLE_BIFS
	GF_BifsDecoder *bifs_dec;
#endif
#ifndef GPAC_DISABLE_LASER
	GF_LASeRCodec *lsr_dec;
#endif

	if (!load || !load->isom) return GF_BAD_PARAM;

	nbBifs = nbLaser = 0;
	e = GF_OK;
#ifndef GPAC_DISABLE_BIFS
	bifs_dec = gf_bifs_decoder_new(load->scene_graph, 1);
	gf_bifs_decoder_set_extraction_path(bifs_dec, load->localPath, load->fileName);
#endif
	od_dec = gf_odf_codec_new();
	logs = NULL;
#ifndef GPAC_DISABLE_LASER
	lsr_dec = gf_laser_decoder_new(load->scene_graph);
#endif
	esd = NULL;
	/*load each stream*/
	nb_samp = 0;
	for (i=0; i<gf_isom_get_track_count(load->isom); i++) {
		u32 type = gf_isom_get_media_type(load->isom, i+1);
		switch (type) {
		case GF_ISOM_MEDIA_SCENE:
		case GF_ISOM_MEDIA_OD:
			nb_samp += gf_isom_get_sample_count(load->isom, i+1);
			break;
		default:
			break;
		}
	}
	samp_done = 1;
	gf_isom_text_set_streaming_mode(load->isom, 1);

	for (i=0; i<gf_isom_get_track_count(load->isom); i++) {
		u32 type = gf_isom_get_media_type(load->isom, i+1);
		switch (type) {
		case GF_ISOM_MEDIA_SCENE:
		case GF_ISOM_MEDIA_OD:
			break;
		default:
			continue;
		}
		esd = gf_isom_get_esd(load->isom, i+1, 1);
		if (!esd) continue;


		if ((esd->decoderConfig->objectTypeIndication == GPAC_OTI_SCENE_AFX) ||
		        (esd->decoderConfig->objectTypeIndication == GPAC_OTI_SCENE_SYNTHESIZED_TEXTURE)
		   ) {
			nb_samp += gf_isom_get_sample_count(load->isom, i+1);
			continue;
		}
		sc = gf_sm_stream_new(load->ctx, esd->ESID, esd->decoderConfig->streamType, esd->decoderConfig->objectTypeIndication);
		sc->streamType = esd->decoderConfig->streamType;
		sc->ESID = esd->ESID;
		sc->objectType = esd->decoderConfig->objectTypeIndication;
		sc->timeScale = gf_isom_get_media_timescale(load->isom, i+1);

		/*we still need to reconfig the BIFS*/
		if (esd->decoderConfig->streamType==GF_STREAM_SCENE) {
#ifndef GPAC_DISABLE_BIFS
			/*BIFS*/
			if (esd->decoderConfig->objectTypeIndication<=2) {
				if (!esd->dependsOnESID && nbBifs && !i)
					mp4_report(load, GF_OK, "several scene namespaces used or improper scene dependencies in file - import may be incorrect");
				if (!esd->decoderConfig->decoderSpecificInfo) {
					/* Hack for T-DMB non compliant streams */
					e = gf_bifs_decoder_configure_stream(bifs_dec, esd->ESID, NULL, 0, esd->decoderConfig->objectTypeIndication);
				} else {
					e = gf_bifs_decoder_configure_stream(bifs_dec, esd->ESID, esd->decoderConfig->decoderSpecificInfo->data, esd->decoderConfig->decoderSpecificInfo->dataLength, esd->decoderConfig->objectTypeIndication);
				}
				if (e) goto exit;
				nbBifs++;
			}
#endif

#ifndef GPAC_DISABLE_LASER
			/*LASER*/
			if (esd->decoderConfig->objectTypeIndication==0x09) {
				if (!esd->dependsOnESID && nbBifs && !i)
					mp4_report(load, GF_OK, "several scene namespaces used or improper scene dependencies in file - import may be incorrect");
				e = gf_laser_decoder_configure_stream(lsr_dec, esd->ESID, esd->decoderConfig->decoderSpecificInfo->data, esd->decoderConfig->decoderSpecificInfo->dataLength);
				if (e) goto exit;
				nbLaser++;
			}
#endif
		}

		init_offset = 0;
		/*dump all AUs*/
		for (j=0; j<gf_isom_get_sample_count(load->isom, i+1); j++) {
			GF_AUContext *au;
			GF_ISOSample *samp = gf_isom_get_sample(load->isom, i+1, j+1, &di);
			if (!samp) {
				mp4_report(load, gf_isom_last_error(load->isom), "Unable to fetch sample %d from track ID %d - aborting track import", j+1, gf_isom_get_track_id(load->isom, i+1));
				break;
			}
			/*check if track has initial offset*/
			if (!j && gf_isom_get_edit_segment_count(load->isom, i+1)) {
				u64 EditTime, dur, mtime;
				u8 mode;
				gf_isom_get_edit_segment(load->isom, i+1, 1, &EditTime, &dur, &mtime, &mode);
				if (mode==GF_ISOM_EDIT_EMPTY) {
					init_offset = (u32) (dur * sc->timeScale / gf_isom_get_timescale(load->isom) );
				}
			}
			samp->DTS += init_offset;

			au = gf_sm_stream_au_new(sc, samp->DTS, ((Double)(s64) samp->DTS) / sc->timeScale, (samp->IsRAP==RAP) ? 1 : 0);

			if (esd->decoderConfig->streamType==GF_STREAM_SCENE) {
#ifndef GPAC_DISABLE_BIFS
				if (esd->decoderConfig->objectTypeIndication<=2)
					e = gf_bifs_decode_command_list(bifs_dec, esd->ESID, samp->data, samp->dataLength, au->commands);
#endif
#ifndef GPAC_DISABLE_LASER
				if (esd->decoderConfig->objectTypeIndication==0x09)
					e = gf_laser_decode_command_list(lsr_dec, esd->ESID, samp->data, samp->dataLength, au->commands);
#endif
			} else {
				e = gf_odf_codec_set_au(od_dec, samp->data, samp->dataLength);
				if (!e) e = gf_odf_codec_decode(od_dec);
				if (!e) {
					while (1) {
						GF_ODCom *odc = gf_odf_codec_get_com(od_dec);
						if (!odc) break;
						/*update ESDs if any*/
						UpdateODCommand(load->isom, odc);
						gf_list_add(au->commands, odc);
					}
				}
			}
			gf_isom_sample_del(&samp);
			if (e) {
				mp4_report(load, gf_isom_last_error(load->isom), "decoding sample %d from track ID %d failed", j+1, gf_isom_get_track_id(load->isom, i+1));
				goto exit;
			}

			samp_done++;
			gf_set_progress("MP4 Loading", samp_done, nb_samp);
		}
		gf_odf_desc_del((GF_Descriptor *) esd);
		esd = NULL;
	}
	gf_isom_text_set_streaming_mode(load->isom, 0);

exit:
#ifndef GPAC_DISABLE_BIFS
	gf_bifs_decoder_del(bifs_dec);
#endif
	gf_odf_codec_del(od_dec);
#ifndef GPAC_DISABLE_LASER
	gf_laser_decoder_del(lsr_dec);
#endif
	if (esd) gf_odf_desc_del((GF_Descriptor *) esd);
	if (logs) gf_fclose(logs);
	return e;
}

static void gf_sm_load_done_isom(GF_SceneLoader *load)
{
	/*nothing to do the file is not ours*/
}

static GF_Err gf_sm_isom_suspend(GF_SceneLoader *loader, Bool suspend)
{
	return GF_OK;
}

GF_Err gf_sm_load_init_isom(GF_SceneLoader *load)
{
	u32 i;
	GF_BIFSConfig *bc;
	GF_ESD *esd;
	GF_Err e;
	char *scene_msg = "MPEG-4 BIFS Scene Parsing";
	if (!load->isom) return GF_BAD_PARAM;

	/*load IOD*/
	load->ctx->root_od = (GF_ObjectDescriptor *) gf_isom_get_root_od(load->isom);
	if (!load->ctx->root_od) {
		e = gf_isom_last_error(load->isom);
		if (e) return e;
	} else if ((load->ctx->root_od->tag != GF_ODF_OD_TAG) && (load->ctx->root_od->tag != GF_ODF_IOD_TAG)) {
		gf_odf_desc_del((GF_Descriptor *) load->ctx->root_od);
		load->ctx->root_od = NULL;
	}

	esd = NULL;

	/*get root scene stream*/
	for (i=0; i<gf_isom_get_track_count(load->isom); i++) {
		u32 type = gf_isom_get_media_type(load->isom, i+1);
		if (type != GF_ISOM_MEDIA_SCENE) continue;
		if (! gf_isom_is_track_in_root_od(load->isom, i+1) ) continue;
		esd = gf_isom_get_esd(load->isom, i+1, 1);

		if (esd && esd->URLString) {
			gf_odf_desc_del((GF_Descriptor *)esd);
			esd = NULL;
			continue;
		}

		/*make sure we load the root BIFS stream first*/
		if (esd && esd->dependsOnESID && (esd->dependsOnESID!=esd->ESID) ) {
			u32 track = gf_isom_get_track_by_id(load->isom, esd->dependsOnESID);
			if (gf_isom_get_media_type(load->isom, track) != GF_ISOM_MEDIA_OD) {
				gf_odf_desc_del((GF_Descriptor *)esd);
				esd = NULL;
				continue;
			}
		}
		if (esd && esd->decoderConfig && esd->decoderConfig->objectTypeIndication==0x09) scene_msg = "MPEG-4 LASeR Scene Parsing";
		break;
	}
	if (!esd) return GF_OK;

	GF_LOG(GF_LOG_INFO, GF_LOG_PARSER, ("%s\n", scene_msg));

	/*BIFS: update size & pixel metrics info*/
	if (esd && esd->decoderConfig) {
		if (esd->decoderConfig->objectTypeIndication<=2) {
			bc = gf_odf_get_bifs_config(esd->decoderConfig->decoderSpecificInfo, esd->decoderConfig->objectTypeIndication);
			if (!bc->elementaryMasks && bc->pixelWidth && bc->pixelHeight) {
				load->ctx->scene_width = bc->pixelWidth;
				load->ctx->scene_height = bc->pixelHeight;
				load->ctx->is_pixel_metrics = bc->pixelMetrics;
			}
			gf_odf_desc_del((GF_Descriptor *) bc);
			/*note we don't load the first BIFS AU to avoid storing the BIFS decoder, needed to properly handle quantization*/
		}
		/*LASeR*/
		else if (esd->decoderConfig->objectTypeIndication==0x09) {
			load->ctx->is_pixel_metrics = 1;
		}
	}
	gf_odf_desc_del((GF_Descriptor *) esd);
	esd = NULL;

	load->process = gf_sm_load_run_isom;
	load->done = gf_sm_load_done_isom;
	load->suspend = gf_sm_isom_suspend;
	return GF_OK;
}

#endif /*GPAC_DISABLE_ISOM && GPAC_DISABLE_LOADER_ISOM*/