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Diffstat (limited to 'gst/qtmux/descriptors.h')
| -rw-r--r-- | gst/qtmux/descriptors.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/gst/qtmux/descriptors.h b/gst/qtmux/descriptors.h new file mode 100644 index 00000000..db05a2ba --- /dev/null +++ b/gst/qtmux/descriptors.h @@ -0,0 +1,128 @@ +/* Quicktime muxer plugin for GStreamer + * Copyright (C) 2008 Thiago Sousa Santos <thiagoss@embedded.ufcg.edu.br> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __DESCRIPTORS_H__ +#define __DESCRIPTORS_H__ + +#include <glib.h> +#include <string.h> +#include "properties.h" + +/* + * Tags for descriptor (each kind is represented by a number, instead of fourcc as in atoms) + */ +#define OBJECT_DESC_TAG 0x01 +#define INIT_OBJECT_DESC_TAG 0x02 +#define ES_DESCRIPTOR_TAG 0x03 +#define DECODER_CONFIG_DESC_TAG 0x04 +#define DECODER_SPECIFIC_INFO_TAG 0x05 +#define SL_CONFIG_DESC_TAG 0x06 +#define ES_ID_INC_TAG 0x0E +#define MP4_INIT_OBJECT_DESC_TAG 0x10 + +#define ESDS_OBJECT_TYPE_MPEG1_P3 0x6B +#define ESDS_OBJECT_TYPE_MPEG2_P7_MAIN 0x66 +#define ESDS_OBJECT_TYPE_MPEG4_P7_LC 0x67 +#define ESDS_OBJECT_TYPE_MPEG4_P7_SSR 0x68 +#define ESDS_OBJECT_TYPE_MPEG4_P2 0x20 +#define ESDS_OBJECT_TYPE_MPEG4_P3 0x40 + +#define ESDS_STREAM_TYPE_VISUAL 0x04 +#define ESDS_STREAM_TYPE_AUDIO 0x05 + + +typedef struct _BaseDescriptor +{ + guint8 tag; + /* the first bit of each byte indicates if the next byte should be used */ + guint8 size[4]; +} BaseDescriptor; + +typedef struct _SLConfigDescriptor +{ + BaseDescriptor base; + + guint8 predefined; /* everything is supposed predefined */ +} SLConfigDescriptor; + +typedef struct _DecoderSpecificInfoDescriptor +{ + BaseDescriptor base; + guint32 length; + guint8 *data; +} DecoderSpecificInfoDescriptor; + +typedef struct _DecoderConfigDescriptor { + BaseDescriptor base; + + guint8 object_type; + + /* following are condensed into streamType: + * bit(6) streamType; + * bit(1) upStream; + * const bit(1) reserved=1; + */ + guint8 stream_type; + + guint8 buffer_size_DB[3]; + guint32 max_bitrate; + guint32 avg_bitrate; + + DecoderSpecificInfoDescriptor *dec_specific_info; +} DecoderConfigDescriptor; + +typedef struct _ESDescriptor +{ + BaseDescriptor base; + + guint16 id; + + /* flags contains the following: + * bit(1) streamDependenceFlag; + * bit(1) URL_Flag; + * bit(1) OCRstreamFlag; + * bit(5) streamPriority; + */ + guint8 flags; + + guint16 depends_on_es_id; + guint8 url_length; /* only if URL_flag is set */ + guint8 *url_string; /* size is url_length */ + + guint16 ocr_es_id; /* only if OCRstreamFlag is set */ + + DecoderConfigDescriptor dec_conf_desc; + SLConfigDescriptor sl_conf_desc; + + /* optional remainder of ESDescriptor is not used */ +} ESDescriptor; + +/* --- FUNCTIONS --- */ +void desc_es_init (ESDescriptor *es); +ESDescriptor *desc_es_descriptor_new (); +guint64 desc_es_descriptor_copy_data (ESDescriptor *es, guint8 **buffer, + guint64 *size, guint64 *offset); +void desc_es_descriptor_clear (ESDescriptor *es); + +DecoderSpecificInfoDescriptor *desc_dec_specific_info_new(); +void desc_dec_specific_info_free (DecoderSpecificInfoDescriptor *dsid); +void desc_dec_specific_info_alloc_data (DecoderSpecificInfoDescriptor *dsid, + guint32 size); + +#endif /* __DESCRIPTORS_H__ */ |