diff options
Diffstat (limited to 'ivorbiscodec.h')
| -rw-r--r-- | ivorbiscodec.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/ivorbiscodec.h b/ivorbiscodec.h index 0eea9eb..2a9b998 100644 --- a/ivorbiscodec.h +++ b/ivorbiscodec.h @@ -64,6 +64,26 @@ typedef struct vorbis_comment{ } vorbis_comment; +/* vorbis_dsp_state buffers the current vorbis audio + analysis/synthesis state. The DSP state belongs to a specific + logical bitstream ****************************************************/ +struct vorbis_dsp_state{ + vorbis_info *vi; + oggpack_buffer opb; + + ogg_int32_t **work; + ogg_int32_t **mdctright; + int out_begin; + int out_end; + + long lW; + long W; + + ogg_int64_t granulepos; + ogg_int64_t sequence; + ogg_int64_t sample_count; + +}; /* Vorbis PRIMITIVES: general ***************************************/ @@ -78,6 +98,22 @@ extern char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count); extern int vorbis_comment_query_count(vorbis_comment *vc, char *tag); extern void vorbis_comment_clear(vorbis_comment *vc); + +/* Vorbis PRIMITIVES: synthesis layer *******************************/ + +extern vorbis_dsp_state *vorbis_dsp_create(vorbis_info *vi); +extern void vorbis_dsp_destroy(vorbis_dsp_state *v); +extern int vorbis_dsp_headerin(vorbis_info *vi,vorbis_comment *vc, + ogg_packet *op); + +extern int vorbis_dsp_restart(vorbis_dsp_state *v); +extern int vorbis_dsp_synthesis(vorbis_dsp_state *vd, + ogg_packet *op,int decodep); +extern int vorbis_dsp_pcmout(vorbis_dsp_state *v, + ogg_int16_t *pcm,int samples); +extern int vorbis_dsp_read(vorbis_dsp_state *v,int samples); +extern long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op); + /* Vorbis ERRORS and return codes ***********************************/ #define OV_FALSE -1 |