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Diffstat (limited to 'lib/libucsi/dvb/component_descriptor.h')
| -rw-r--r-- | lib/libucsi/dvb/component_descriptor.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/component_descriptor.h b/lib/libucsi/dvb/component_descriptor.h new file mode 100644 index 0000000..31d38e1 --- /dev/null +++ b/lib/libucsi/dvb/component_descriptor.h @@ -0,0 +1,147 @@ +/* + * section and descriptor parser + * + * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) + * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) + * + * This library 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 2.1 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#ifndef _UCSI_DVB_COMPONENT_DESCRIPTOR +#define _UCSI_DVB_COMPONENT_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> +#include <libucsi/types.h> + +/** + * Possible values for stream_content. + */ +enum { + DVB_STREAM_CONTENT_VIDEO = 0x01, + DVB_STREAM_CONTENT_AUDIO = 0x02, + DVB_STREAM_CONTENT_SUBTITLE = 0x03, + DVB_STREAM_CONTENT_AC3 = 0x04, +}; + +/** + * Possible values for component_type. + */ +enum { + DVB_COMPONENT_TYPE_VIDEO_43_25Hz = 0x01, + DVB_COMPONENT_TYPE_VIDEO_169_PAN_25Hz = 0x02, + DVB_COMPONENT_TYPE_VIDEO_169_NOPAN_25Hz = 0x03, + DVB_COMPONENT_TYPE_VIDEO_GT169_25Hz = 0x04, + + DVB_COMPONENT_TYPE_VIDEO_43_30Hz = 0x05, + DVB_COMPONENT_TYPE_VIDEO_169_PAN_30Hz = 0x06, + DVB_COMPONENT_TYPE_VIDEO_169_NOPAN_30Hz = 0x07, + DVB_COMPONENT_TYPE_VIDEO_GT169_30Hz = 0x08, + + DVB_COMPONENT_TYPE_HDVIDEO_43_25Hz = 0x09, + DVB_COMPONENT_TYPE_HDVIDEO_169_PAN_25Hz = 0x0a, + DVB_COMPONENT_TYPE_HDVIDEO_169_NOPAN_25Hz = 0x0b, + DVB_COMPONENT_TYPE_HDVIDEO_GT169_25Hz = 0x0c, + + DVB_COMPONENT_TYPE_HDVIDEO_43_30Hz = 0x0d, + DVB_COMPONENT_TYPE_HDVIDEO_169_PAN_30Hz = 0x0e, + DVB_COMPONENT_TYPE_HDVIDEO_169_NOPAN_30Hz = 0x0f, + DVB_COMPONENT_TYPE_HDVIDEO_GT169_30Hz = 0x10, + + DVB_COMPONENT_TYPE_AUDIO_SINGLE_MONO = 0x01, + DVB_COMPONENT_TYPE_AUDIO_DUAL_MONO = 0x02, + DVB_COMPONENT_TYPE_AUDIO_STEREO = 0x03, + DVB_COMPONENT_TYPE_AUDIO_MULTI_LINGUAL_MULTI_CHAN= 0x04, + DVB_COMPONENT_TYPE_AUDIO_SURROUND = 0x05, + DVB_COMPONENT_TYPE_AUDIO_VISUAL_IMPAIRED = 0x40, + DVB_COMPONENT_TYPE_AUDIO_HARDHEAR = 0x41, + DVB_COMPONENT_TYPE_AUDIO_SUPPLEMENTARY = 0x42, + + DVB_COMPONENT_TYPE_SUBTITLE_TELETEXT = 0x01, + DVB_COMPONENT_TYPE_SUBTITLE_ASSOC_TELETEXT = 0x02, + DVB_COMPONENT_TYPE_SUBTITLE_VBI = 0x03, + DVB_COMPONENT_TYPE_SUBTITLE_DVB = 0x10, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_43 = 0x11, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_169 = 0x12, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_2211 = 0x13, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR = 0x20, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_43 = 0x21, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_169 = 0x22, + DVB_COMPONENT_TYPE_SUBTITLE_DVB_HARDHEAR_2211 = 0x23, +}; + +/** + * dvb_component_descriptor structure. + */ +struct dvb_component_descriptor { + struct descriptor d; + + EBIT2(uint8_t reserved : 4; , + uint8_t stream_content : 4; ); + uint8_t component_type; + uint8_t component_tag; + iso639lang_t language_code; + /* uint8_t text[] */ +} __ucsi_packed; + +/** + * Process a dvb_component_descriptor. + * + * @param d Pointer to a generic descriptor. + * @return dvb_component_descriptor pointer, or NULL on error. + */ +static inline struct dvb_component_descriptor* + dvb_component_descriptor_codec(struct descriptor* d) +{ + if (d->len < (sizeof(struct dvb_component_descriptor) - 2)) + return NULL; + + return (struct dvb_component_descriptor*) d; +} + +/** + * Accessor for the text field of a dvb_component_descriptor. + * + * @param d dvb_component_descriptor pointer. + * @return Pointer to the field. + */ +static inline uint8_t * + dvb_component_descriptor_text(struct dvb_component_descriptor *d) +{ + return (uint8_t *) d + sizeof(struct dvb_component_descriptor); +} + +/** + * Determine the length of the text field of a dvb_component_descriptor. + * + * @param d dvb_component_descriptor pointer. + * @return Length of the field in bytes. + */ +static inline int + dvb_component_descriptor_text_length(struct dvb_component_descriptor *d) +{ + return d->d.len - 6; +} + +#ifdef __cplusplus +} +#endif + +#endif |