src/lib/doslib/ext/faad/aacaudio.h

   1 /* Castus/ISP AAC audio ADTS frame synchronization and detection */
   2
   3 #ifndef ___MPEG_AAC_AUDIO_H
   4 #define ___MPEG_AAC_AUDIO_H
   5
   6 #include <stdint.h>
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 #define MPEG_AAC_AUDIO_ADTS_HEADER_SIZE 7
  13
  14 typedef uint64_t mpeg_aac_adts_audio_sync_raw_pattern;
  15
  16 typedef struct mpeg_aac_adts_audio_sync_info {
  17         /* sync pattern                                    +0+0   12 bits */
  18         unsigned char           id;                     /* +1+4    1 bit  */
  19         unsigned char           layer;                  /* +1+5    2 bit  */
  20         unsigned char           protection;             /* +1+7    1 bit  */
  21         unsigned char           object_type;            /* +2+0    2 bits */
  22         unsigned char           sample_rate_index;      /* +2+2    4 bits */
  23         unsigned char           private_bit;            /* +2+6    1 bit  */
  24         unsigned char           channel_configuration;  /* +2+7    3 bits */
  25         unsigned char           original_copy;          /* +3+2    1 bit  */
  26         unsigned char           home;                   /* +3+3    1 bit  */
  27         unsigned char           copyright_id;           /* +3+4    1 bit  */
  28         unsigned char           copyright_start;        /* +3+5    1 bit  */
  29         unsigned short          aac_frame_length;       /* +3+6   13 bits */
  30         unsigned short          buffer_fullness;        /* +5+3   11 bits */
  31         unsigned char           add_raw_data_blocks;    /* +6+6    2 bits */
  32                                                         /* +7+0   TOTAL 7 bytes */
  33         unsigned int            sample_rate;
  34         unsigned char           total_raw_data_blocks;
  35         unsigned int            samples_per_frame;
  36         unsigned int            total_samples;
  37         unsigned char           channels;
  38
  39         mpeg_aac_adts_audio_sync_raw_pattern    sync;
  40 } mpeg_aac_adts_audio_sync_info;
  41
  42 uint8_t *mpeg_aac_adts_audio_sync(uint8_t *ptr,uint8_t *fence,mpeg_aac_adts_audio_sync_raw_pattern *p,mpeg_aac_adts_audio_sync_info *i);
  43 void mpeg_aac_adts_audio_get_sync_info(mpeg_aac_adts_audio_sync_raw_pattern sp,mpeg_aac_adts_audio_sync_info *i);
  44 int mpeg_aac_adts_audio_sync_same_format(mpeg_aac_adts_audio_sync_info *a,mpeg_aac_adts_audio_sync_info *b);
  45
  46 #ifdef __cplusplus
  47 }
  48 #endif
  49
  50 #endif /* ___MPEG_AAC_AUDIO_H */
  51