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254 lines
10 KiB
254 lines
10 KiB
/*****************************************************************************
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* desc_02.h: ISO/IEC 13818-1 Descriptor 0x02 (Video stream descriptor)
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*****************************************************************************
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* Copyright (C) 2011 Unix Solutions Ltd.
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*
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* Authors: Georgi Chorbadzhiyski <georgi@unixsol.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject
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* to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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/*
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* Normative references:
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* - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems)
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*/
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#ifndef __BITSTREAM_MPEG_DESC_02_H__
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#define __BITSTREAM_MPEG_DESC_02_H__
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#include <bitstream/common.h>
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#include <bitstream/mpeg/psi/descriptors.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*****************************************************************************
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* Descriptor 0x02: Video stream descriptor
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*****************************************************************************/
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#define DESC02_HEADER_SIZE (DESC_HEADER_SIZE + 1)
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static inline void desc02_init(uint8_t *p_desc)
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{
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desc_set_tag(p_desc, 0x02);
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desc_set_length(p_desc, DESC02_HEADER_SIZE - DESC_HEADER_SIZE);
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}
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static inline bool desc02_get_multiple_frame_rate(const uint8_t *p_desc) {
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return (p_desc[2] & 0x80) == 0x80;
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}
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static inline void desc02_set_multiple_frame_rate(uint8_t *p_desc, bool b_multiple_frame_rate) {
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p_desc[2] = b_multiple_frame_rate ? (p_desc[2] | 0x80) : (p_desc[2] &~ 0x80);
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}
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static inline uint8_t desc02_get_frame_rate_code(const uint8_t *p_desc) {
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return (p_desc[2] & 0x78) >> 3; /* 1xxxx111 */
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}
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static inline void desc02_set_frame_rate_code(uint8_t *p_desc, uint8_t i_frame_rate_code) {
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p_desc[2] = (p_desc[2] & 0x87) | (i_frame_rate_code & 0x0f) << 3;
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}
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static inline const char *desc02_get_frame_rate_txt(const uint8_t frame_rate_code) {
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return frame_rate_code == 0 ? "forbidden" :
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frame_rate_code == 1 ? "23.976" :
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frame_rate_code == 2 ? "24.00" :
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frame_rate_code == 3 ? "25.00" :
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frame_rate_code == 4 ? "29.97" :
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frame_rate_code == 5 ? "30.00" :
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frame_rate_code == 6 ? "50.00" :
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frame_rate_code == 7 ? "59.94" :
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frame_rate_code == 8 ? "60.00" : "reserved";
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}
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static inline bool desc02_get_mpeg1_only_flag(const uint8_t *p_desc) {
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return (p_desc[2] & 0x04) == 0x04;
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}
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static inline void desc02_set_mpeg1_only_flag(uint8_t *p_desc, bool b_mpeg1_only_flag) {
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p_desc[2] = b_mpeg1_only_flag ? (p_desc[2] | 0x04) : (p_desc[2] &~ 0x04);
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if (b_mpeg1_only_flag)
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desc_set_length(p_desc, DESC02_HEADER_SIZE - DESC_HEADER_SIZE);
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else
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desc_set_length(p_desc, (DESC02_HEADER_SIZE + 2) - DESC_HEADER_SIZE);
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}
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static inline bool desc02_get_constraint_parameter(const uint8_t *p_desc) {
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return (p_desc[2] & 0x02) == 0x02;
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}
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static inline void desc02_set_constraint_parameter(uint8_t *p_desc, bool b_constraint_parameter) {
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p_desc[2] = b_constraint_parameter ? (p_desc[2] | 0x02) : (p_desc[2] &~ 0x02);
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}
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static inline bool desc02_get_still_picture(const uint8_t *p_desc) {
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return (p_desc[2] & 0x01) == 0x01;
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}
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static inline void desc02_set_still_picture(uint8_t *p_desc, bool b_still_picture) {
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p_desc[2] = b_still_picture ? (p_desc[2] | 0x01) : (p_desc[2] &~ 0x01);
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}
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static inline uint8_t desc02_get_profile(const uint8_t *p_desc) {
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return p_desc[3] >> 4;
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}
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static inline void desc02_set_profile(uint8_t *p_desc, uint8_t i_profile) {
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p_desc[3] = ((i_profile & 0x0f) << 4) | (p_desc[3] & 0x0f);
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}
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static inline const char *desc02_get_profile_txt(const uint8_t profile) {
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return profile == 1 ? "High" :
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profile == 2 ? "Spatially Scalable" :
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profile == 3 ? "SNR Scalable" :
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profile == 4 ? "Main" :
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profile == 5 ? "Simple" : "Reserved";
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}
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static inline uint8_t desc02_get_level(const uint8_t *p_desc) {
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return p_desc[3] & 0x0f;
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}
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static inline void desc02_set_level(uint8_t *p_desc, uint8_t i_level) {
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p_desc[3] = (p_desc[3] & 0xf0) | (i_level & 0x0f);
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}
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static inline const char *desc02_get_level_txt(const uint8_t level) {
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return level == 4 ? "High" :
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level == 6 ? "High 1440" :
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level == 8 ? "Main" :
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level == 10 ? "Low" : "Reserved";
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}
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static inline uint8_t desc02_get_chroma_format(const uint8_t *p_desc) {
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return p_desc[4] >> 6;
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}
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static inline void desc02_set_chroma_format(uint8_t *p_desc, uint8_t i_chroma_format) {
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p_desc[4] = (i_chroma_format << 6) | (p_desc[4] & 0x20) | 0x1f;
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}
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static inline const char *desc02_get_chroma_format_txt(const uint8_t chroma_format) {
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return chroma_format == 0 ? "reserved" :
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chroma_format == 1 ? "4:2:0" :
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chroma_format == 2 ? "4:2:2" :
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chroma_format == 3 ? "4:4:4" : "unknown";
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}
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static inline bool desc02_get_frame_rate_extension(const uint8_t *p_desc) {
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return (p_desc[4] & 0x20) == 0x20;
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}
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static inline void desc02_set_frame_rate_extension(uint8_t *p_desc, bool b_frame_rate_extension) {
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p_desc[4] = (b_frame_rate_extension ? (p_desc[4] | 0x20) : (p_desc[4] &~ 0x20)) | 0x1f;
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}
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static inline bool desc02_validate(const uint8_t *p_desc)
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{
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if (desc02_get_mpeg1_only_flag(p_desc))
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return desc_get_length(p_desc) >= DESC02_HEADER_SIZE - DESC_HEADER_SIZE;
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else
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return desc_get_length(p_desc) >= (DESC02_HEADER_SIZE + 2) - DESC_HEADER_SIZE;
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}
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static inline void desc02_print(const uint8_t *p_desc, f_print pf_print,
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void *opaque, print_type_t i_print_type)
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{
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switch (i_print_type) {
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case PRINT_XML:
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if (desc02_get_mpeg1_only_flag(p_desc)) {
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pf_print(opaque,
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"<VIDEO_STREAM_DESC multiple_frame_rate=\"%u\" frame_rate_code=\"%u\" frame_rate_txt=\"%s\""
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" mpeg1_only=\"%u\" constraint_parameter=\"%u\" still_picture=\"%u\"/>",
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desc02_get_multiple_frame_rate(p_desc),
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desc02_get_frame_rate_code(p_desc),
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desc02_get_frame_rate_txt(desc02_get_frame_rate_code(p_desc)),
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desc02_get_mpeg1_only_flag(p_desc),
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desc02_get_constraint_parameter(p_desc),
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desc02_get_still_picture(p_desc)
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);
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} else {
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pf_print(opaque,
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"<VIDEO_STREAM_DESC multiple_frame_rate=\"%u\" frame_rate_code=\"%u\" frame_rate_txt=\"%s\""
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" mpeg1_only=\"%u\" constraint_parameter=\"%u\" still_picture=\"%u\""
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" profile=\"%u\" profile_txt=\"%s\" level=\"%u\" level_txt=\"%s\""
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" chroma_format=\"%u\" chroma_format_txt=\"%s\""
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" frame_rate_extension=\"%u\"/>",
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desc02_get_multiple_frame_rate(p_desc),
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desc02_get_frame_rate_code(p_desc),
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desc02_get_frame_rate_txt(desc02_get_frame_rate_code(p_desc)),
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desc02_get_mpeg1_only_flag(p_desc),
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desc02_get_constraint_parameter(p_desc),
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desc02_get_still_picture(p_desc),
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desc02_get_profile(p_desc),
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desc02_get_profile_txt(desc02_get_profile(p_desc)),
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desc02_get_level(p_desc),
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desc02_get_level_txt(desc02_get_level(p_desc)),
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desc02_get_chroma_format(p_desc),
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desc02_get_chroma_format_txt(desc02_get_chroma_format(p_desc)),
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desc02_get_frame_rate_extension(p_desc)
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);
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}
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break;
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default:
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if (desc02_get_mpeg1_only_flag(p_desc)) {
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pf_print(opaque,
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" - desc 02 video_stream multiple_frame_rate=%u frame_rate_code=%u frame_rate_txt=\"%s\""
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" mpeg1_only=%u constraint_parameter=%u still_picture=%u",
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desc02_get_multiple_frame_rate(p_desc),
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desc02_get_frame_rate_code(p_desc),
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desc02_get_frame_rate_txt(desc02_get_frame_rate_code(p_desc)),
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desc02_get_mpeg1_only_flag(p_desc),
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desc02_get_constraint_parameter(p_desc),
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desc02_get_still_picture(p_desc)
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);
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} else {
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pf_print(opaque,
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" - desc 02 video_stream multiple_frame_rate=%u frame_rate_code=%u frame_rate_txt=\"%s\""
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" mpeg1_only=%u constraint_parameter=%u still_picture=%u"
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" profile=%u profile_txt=\"%s\" level=%u level_txt=\"%s\""
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" chroma_format=%u chroma_format_txt=\"%s\""
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" frame_rate_extension=%u",
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desc02_get_multiple_frame_rate(p_desc),
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desc02_get_frame_rate_code(p_desc),
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desc02_get_frame_rate_txt(desc02_get_frame_rate_code(p_desc)),
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desc02_get_mpeg1_only_flag(p_desc),
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desc02_get_constraint_parameter(p_desc),
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desc02_get_still_picture(p_desc),
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desc02_get_profile(p_desc),
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desc02_get_profile_txt(desc02_get_profile(p_desc)),
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desc02_get_level(p_desc),
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desc02_get_level_txt(desc02_get_level(p_desc)),
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desc02_get_chroma_format(p_desc),
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desc02_get_chroma_format_txt(desc02_get_chroma_format(p_desc)),
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desc02_get_frame_rate_extension(p_desc)
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);
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}
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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