diff options
Diffstat (limited to 'libavcodec/dolby_e.h')
| -rw-r--r-- | libavcodec/dolby_e.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libavcodec/dolby_e.h b/libavcodec/dolby_e.h index 855d978bc2..d7fac94fd9 100644 --- a/libavcodec/dolby_e.h +++ b/libavcodec/dolby_e.h @@ -21,6 +21,7 @@ #ifndef AVCODEC_DOLBY_E_H #define AVCODEC_DOLBY_E_H +#include <stdint.h> #include "get_bits.h" #define FRAME_SAMPLES 1792 @@ -81,5 +82,23 @@ typedef struct DolbyEHeaderInfo { static const uint16_t sample_rate_tab[16] = { 0, 42965, 43008, 44800, 53706, 53760 }; +/** + * Initialize DBEContext. + * Set word_bits/word_bytes, input, input_size, key_present. + * @param[out] s DBEContext. + * @param[in] buf raw input buffer. + * @param[in] buf_size must be 3 bytes at least. + * @return Returns 0 on success, AVERROR_INVALIDDATA on error + */ +int ff_dolby_e_parse_init(DBEContext *s, const uint8_t *buf, int buf_size); + +/** + * Parse Dolby E metadata. + * Parse the header up to the end_gain element. + * @param[in] s DBEContext . + * @param[out] hdr Pointer to struct where header info is written. + * @return Returns 0 on success, AVERROR_INVALIDDATA on error + */ +int ff_dolby_e_parse_header(DBEContext *s, DolbyEHeaderInfo *hdr); #endif |