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- /*
- * TS bitstream functions
- * The following functions are copied from bitstream/mpeg.ts and bitstream/mpeg/pes.h
-
- * Copyright (c) 2010-2011 VideoLAN
-
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject
- * to the following conditions:
-
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
-
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
- #ifndef BITSTREAM_H
- #define BITSTREAM_H
-
- #include <stdbool.h>
- #include <inttypes.h>
-
- #define TS_SIZE 188
- #define TS_HEADER_SIZE 4
- #define PES_HEADER_SIZE_PTS 14
- #define PES_HEADER_SIZE_PTSDTS 19
- #define PES_STREAM_ID_MIN 0xbc
- #define PES_STREAM_ID_PRIVATE_2 0xbf
-
- static inline bool ts_validate(const uint8_t *p_ts)
- {
- return p_ts[0] == 0x47;
- }
-
- static inline bool ts_get_unitstart(const uint8_t *p_ts)
- {
- return !!(p_ts[1] & 0x40);
- }
-
- static inline bool ts_has_payload(const uint8_t *p_ts)
- {
- return !!(p_ts[3] & 0x10);
- }
-
- static inline bool ts_has_adaptation(const uint8_t *p_ts)
- {
- return !!(p_ts[3] & 0x20);
- }
-
- static inline uint8_t ts_get_adaptation(const uint8_t *p_ts)
- {
- return p_ts[4];
- }
-
- static inline uint8_t pes_get_streamid(const uint8_t *p_pes)
- {
- return p_pes[3];
- }
-
- static inline bool pes_validate(const uint8_t *p_pes)
- {
- return (p_pes[0] == 0x0 && p_pes[1] == 0x0 && p_pes[2] == 0x1
- && p_pes[3] >= PES_STREAM_ID_MIN);
- }
-
- static inline bool pes_validate_header(const uint8_t *p_pes)
- {
- return ((p_pes[6] & 0xc0) == 0x80);
- }
-
- static inline bool pes_has_pts(const uint8_t *p_pes)
- {
- return !!(p_pes[7] & 0x80);
- }
-
- static inline bool pes_has_dts(const uint8_t *p_pes)
- {
- return (p_pes[7] & 0xc0) == 0xc0;
- }
-
- static inline bool pes_validate_pts(const uint8_t *p_pes)
- {
- return ((p_pes[9] & 0xe1) == 0x21)
- && (p_pes[11] & 0x1) && (p_pes[13] & 0x1);
- }
-
- static inline bool pes_validate_dts(const uint8_t *p_pes)
- {
- return (p_pes[9] & 0x10) && ((p_pes[14] & 0xf1) == 0x11)
- && (p_pes[16] & 0x1) && (p_pes[18] & 0x1);
- }
-
- #endif
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