box_code_isma.c

一个用于智能手机的多媒体库适合S60 WinCE的跨平台开发库

/*
 *			GPAC - Multimedia Framework C SDK
 *
 *			Copyright (c) Cyril Concolato 2005
 *					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>

/* ProtectionInfo Box */
GF_Box *sinf_New()
{
	GF_ProtectionInfoBox *tmp = (GF_ProtectionInfoBox *) malloc(sizeof(GF_ProtectionInfoBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_ProtectionInfoBox));
	tmp->type = GF_ISOM_BOX_TYPE_SINF;
	return (GF_Box *)tmp;
}

void sinf_del(GF_Box *s)
{
	GF_ProtectionInfoBox *ptr = (GF_ProtectionInfoBox *)s;
	if (ptr == NULL) return;
	if (ptr->original_format) gf_isom_box_del((GF_Box *)ptr->original_format);
	if (ptr->info) gf_isom_box_del((GF_Box *)ptr->info);
	if (ptr->scheme_type) gf_isom_box_del((GF_Box *)ptr->scheme_type);
	free(ptr);
}

GF_Err sinf_AddBox(GF_Box *s, GF_Box *a)
{
	GF_ProtectionInfoBox *ptr = (GF_ProtectionInfoBox *)s;
	switch (a->type) {
	case GF_ISOM_BOX_TYPE_FRMA: 
		if (ptr->original_format) return GF_ISOM_INVALID_FILE;
		ptr->original_format = (GF_OriginalFormatBox*)a; 
		break;
	case GF_ISOM_BOX_TYPE_SCHM: 
		if (ptr->scheme_type) return GF_ISOM_INVALID_FILE;
		ptr->scheme_type = (GF_SchemeTypeBox*)a; 
		break;
	case GF_ISOM_BOX_TYPE_SCHI: 
		if (ptr->info) return GF_ISOM_INVALID_FILE;
		ptr->info = (GF_SchemeInformationBox*)a; 
		break;
	default: 
		gf_isom_box_del(a); 
		break;
	}
	return GF_OK;
}

GF_Err sinf_Read(GF_Box *s, GF_BitStream *bs)
{
	return gf_isom_read_box_list(s, bs, sinf_AddBox);
}

#ifndef GPAC_READ_ONLY
GF_Err sinf_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_ProtectionInfoBox *ptr = (GF_ProtectionInfoBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_write_header(s, bs);
	if (e) return e;
	//frma
	e = gf_isom_box_write((GF_Box *) ptr->original_format, bs);
	if (e) return e;
	// schm
	e = gf_isom_box_write((GF_Box *) ptr->scheme_type, bs);
	if (e) return e;
	// schi
	e = gf_isom_box_write((GF_Box *) ptr->info, bs);
	if (e) return e;
	return GF_OK;
}

GF_Err sinf_Size(GF_Box *s)
{
	GF_Err e;
	GF_ProtectionInfoBox *ptr = (GF_ProtectionInfoBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_get_size(s);
	if (e) return e;
	e = gf_isom_box_size((GF_Box *) ptr->original_format);
	if (e) return e;
	ptr->size += ptr->original_format->size;
	e = gf_isom_box_size((GF_Box *) ptr->scheme_type);
	if (e) return e;
	ptr->size += ptr->scheme_type->size;
	e = gf_isom_box_size((GF_Box *) ptr->info);
	if (e) return e;
	ptr->size += ptr->info->size;
	return GF_OK;
}
#endif //GPAC_READ_ONLY

/* OriginalFormat Box */
GF_Box *frma_New()
{
	GF_OriginalFormatBox *tmp = (GF_OriginalFormatBox *) malloc(sizeof(GF_OriginalFormatBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_OriginalFormatBox));
	tmp->type = GF_ISOM_BOX_TYPE_FRMA;
	return (GF_Box *)tmp;
}

void frma_del(GF_Box *s)
{
	GF_OriginalFormatBox *ptr = (GF_OriginalFormatBox *)s;
	if (ptr == NULL) return;
	free(ptr);
}

GF_Err frma_Read(GF_Box *s, GF_BitStream *bs)
{
	GF_OriginalFormatBox *ptr = (GF_OriginalFormatBox *)s;
	ptr->data_format = gf_bs_read_u32(bs);
	return GF_OK;
}

#ifndef GPAC_READ_ONLY
GF_Err frma_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_OriginalFormatBox *ptr = (GF_OriginalFormatBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_write_header(s, bs);
	if (e) return e;
	gf_bs_write_u32(bs, ptr->data_format);
	return GF_OK;
}

GF_Err frma_Size(GF_Box *s)
{
	GF_Err e;
	GF_OriginalFormatBox *ptr = (GF_OriginalFormatBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_get_size(s);
	if (e) return e;
	ptr->size += 4;
	return GF_OK;
}
#endif //GPAC_READ_ONLY

/* SchemeType Box */
GF_Box *schm_New()
{
	GF_SchemeTypeBox *tmp = (GF_SchemeTypeBox *) malloc(sizeof(GF_SchemeTypeBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_SchemeTypeBox));
	gf_isom_full_box_init((GF_Box *)tmp);
	tmp->type = GF_ISOM_BOX_TYPE_SCHM;
	return (GF_Box *)tmp;
}

void schm_del(GF_Box *s)
{
	GF_SchemeTypeBox *ptr = (GF_SchemeTypeBox *)s;
	if (ptr == NULL) return;
	if (ptr->URI) free(ptr->URI);
	free(ptr);
}

GF_Err schm_Read(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_SchemeTypeBox *ptr = (GF_SchemeTypeBox *)s;
	e = gf_isom_full_box_read(s, bs);
	if (e) return e;
	ptr->scheme_type = gf_bs_read_u32(bs);
	ptr->scheme_version = gf_bs_read_u32(bs);
	ptr->size -= 8;
	if (ptr->size && (ptr->flags & 0x000001)) {
		u32 len = (u32) (ptr->size);
		ptr->URI = (char*)malloc(sizeof(char)*len);
		if (!ptr->URI) return GF_OUT_OF_MEM;
		gf_bs_read_data(bs, ptr->URI, len);
	}
	return GF_OK;
}

#ifndef GPAC_READ_ONLY
GF_Err schm_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_SchemeTypeBox *ptr = (GF_SchemeTypeBox *) s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_write(s, bs);
	gf_bs_write_u32(bs, ptr->scheme_type);
	gf_bs_write_u32(bs, ptr->scheme_version);
	if (ptr->flags & 0x000001) gf_bs_write_data(bs, ptr->URI, strlen(ptr->URI)+1);
	return GF_OK;
}

GF_Err schm_Size(GF_Box *s)
{
	GF_Err e;
	GF_SchemeTypeBox *ptr = (GF_SchemeTypeBox *) s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_get_size(s);
	if (e) return e;
	ptr->size += 8;
	if (ptr->flags & 0x000001) ptr->size += strlen(ptr->URI)+1;
	return GF_OK;
}
#endif //GPAC_READ_ONLY

/* SchemeInformation Box */
GF_Box *schi_New()
{
	GF_SchemeInformationBox *tmp = (GF_SchemeInformationBox *) malloc(sizeof(GF_SchemeInformationBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_SchemeInformationBox));
	tmp->type = GF_ISOM_BOX_TYPE_SCHI;
	return (GF_Box *)tmp;
}

void schi_del(GF_Box *s)
{
	GF_SchemeInformationBox *ptr = (GF_SchemeInformationBox *)s;
	if (ptr == NULL) return;
	if (ptr->ikms) gf_isom_box_del((GF_Box *)ptr->ikms);
	if (ptr->isfm) gf_isom_box_del((GF_Box *)ptr->isfm);
	free(ptr);
}

GF_Err schi_AddBox(GF_Box *s, GF_Box *a)
{
	GF_SchemeInformationBox *ptr = (GF_SchemeInformationBox *)s;
	switch (a->type) {
	case GF_ISOM_BOX_TYPE_IKMS:
		if (ptr->ikms) return GF_ISOM_INVALID_FILE;
		ptr->ikms = (GF_ISMAKMSBox*)a;
		return GF_OK;
	case GF_ISOM_BOX_TYPE_ISFM:
		if (ptr->isfm) return GF_ISOM_INVALID_FILE;
		ptr->isfm = (GF_ISMASampleFormatBox*)a;
		return GF_OK;
	case GF_ISOM_BOX_TYPE_ODKM:
		if (ptr->okms) return GF_ISOM_INVALID_FILE;
		ptr->okms = (GF_OMADRMKMSBox*)a;
		return GF_OK;
	default:
		gf_isom_box_del(a);
		return GF_OK;
	}
}

GF_Err schi_Read(GF_Box *s, GF_BitStream *bs)
{
	return gf_isom_read_box_list(s, bs, schi_AddBox);
}

#ifndef GPAC_READ_ONLY
GF_Err schi_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_SchemeInformationBox *ptr = (GF_SchemeInformationBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_write_header(s, bs);
	if (e) return e;

	if (ptr->ikms) {
		e = gf_isom_box_write((GF_Box *) ptr->ikms, bs);
		if (e) return e;
	}
	if (ptr->isfm) {
		e = gf_isom_box_write((GF_Box *) ptr->isfm, bs);
		if (e) return e;
	}
	if (ptr->okms) {
		e = gf_isom_box_write((GF_Box *) ptr->okms, bs);
		if (e) return e;
	}
	return GF_OK;
}

GF_Err schi_Size(GF_Box *s)
{
	GF_Err e;
	GF_SchemeInformationBox *ptr = (GF_SchemeInformationBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_box_get_size(s);
	if (e) return e;

	if (ptr->ikms) {
		e = gf_isom_box_size((GF_Box *) ptr->ikms);
		if (e) return e;
		ptr->size += ptr->ikms->size;
	}
	if (ptr->isfm) {
		e = gf_isom_box_size((GF_Box *) ptr->isfm);
		if (e) return e;
		ptr->size += ptr->isfm->size;
	}
	if (ptr->okms) {
		e = gf_isom_box_size((GF_Box *) ptr->okms);
		if (e) return e;
		ptr->size += ptr->okms->size;
	}
	return GF_OK;
}

#endif //GPAC_READ_ONLY

/* ISMAKMS Box */
GF_Box *iKMS_New()
{
	GF_ISMAKMSBox *tmp = (GF_ISMAKMSBox *) malloc(sizeof(GF_ISMAKMSBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_ISMAKMSBox));
	gf_isom_full_box_init((GF_Box *)tmp);
	tmp->type = GF_ISOM_BOX_TYPE_IKMS;
	return (GF_Box *)tmp;
}

void iKMS_del(GF_Box *s)
{
	GF_ISMAKMSBox *ptr = (GF_ISMAKMSBox *)s;
	if (ptr == NULL) return;
	if (ptr->URI) free(ptr->URI);
	free(ptr);
}

GF_Err iKMS_Read(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	u32 len;
	GF_ISMAKMSBox *ptr = (GF_ISMAKMSBox *)s;

	e = gf_isom_full_box_read(s, bs);
	if (e) return e;
	len = (u32) (ptr->size);
	ptr->URI = (char*) malloc(sizeof(char)*len);
	if (!ptr->URI) return GF_OUT_OF_MEM;
	gf_bs_read_data(bs, ptr->URI, len);
	return GF_OK;
}

#ifndef GPAC_READ_ONLY
GF_Err iKMS_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_ISMAKMSBox *ptr = (GF_ISMAKMSBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_write(s, bs);
	if (e) return e;
	gf_bs_write_data(bs, ptr->URI, strlen(ptr->URI)+1);
	return GF_OK;
}

GF_Err iKMS_Size(GF_Box *s)
{
	GF_Err e;
	GF_ISMAKMSBox *ptr = (GF_ISMAKMSBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_get_size(s);
	if (e) return e;
	ptr->size += strlen(ptr->URI)+1;
	return GF_OK;
}
#endif //GPAC_READ_ONLY

/* ISMASampleFormat Box */
GF_Box *iSFM_New()
{
	GF_ISMASampleFormatBox *tmp = (GF_ISMASampleFormatBox *) malloc(sizeof(GF_ISMASampleFormatBox));
	if (tmp == NULL) return NULL;
	memset(tmp, 0, sizeof(GF_ISMASampleFormatBox));
	gf_isom_full_box_init((GF_Box *)tmp);
	tmp->type = GF_ISOM_BOX_TYPE_ISFM;
	return (GF_Box *)tmp;
}

void iSFM_del(GF_Box *s)
{
	GF_ISMASampleFormatBox *ptr = (GF_ISMASampleFormatBox *)s;
	if (ptr == NULL) return;
	free(ptr);
}


GF_Err iSFM_Read(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_ISMASampleFormatBox *ptr = (GF_ISMASampleFormatBox *)s;
	if (ptr == NULL) return GF_BAD_PARAM;
	e = gf_isom_full_box_read(s, bs);
	if (e) return e;
	ptr->selective_encryption = gf_bs_read_int(bs, 1);
	gf_bs_read_int(bs, 7);
	ptr->key_indicator_length = gf_bs_read_u8(bs);
	ptr->IV_length = gf_bs_read_u8(bs);
	return GF_OK;
}

#ifndef GPAC_READ_ONLY
GF_Err iSFM_Write(GF_Box *s, GF_BitStream *bs)
{
	GF_Err e;
	GF_ISMASampleFormatBox *ptr = (GF_ISMASampleFormatBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_write(s, bs);
	if (e) return e;
	gf_bs_write_int(bs, ptr->selective_encryption, 1);
	gf_bs_write_int(bs, 0, 7);
	gf_bs_write_u8(bs, ptr->key_indicator_length);
	gf_bs_write_u8(bs, ptr->IV_length);
	return GF_OK;
}

GF_Err iSFM_Size(GF_Box *s)
{
	GF_Err e;
	GF_ISMASampleFormatBox *ptr = (GF_ISMASampleFormatBox *)s;
	if (!s) return GF_BAD_PARAM;
	e = gf_isom_full_box_get_size(s);
	if (e) return e;
	ptr->size += 3;
	return GF_OK;
}
#endif //GPAC_READ_ONLY