diff options
Diffstat (limited to 'lib/rbcodec/codecs/libffmpegFLAC/shndec.h')
-rw-r--r-- | lib/rbcodec/codecs/libffmpegFLAC/shndec.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libffmpegFLAC/shndec.h b/lib/rbcodec/codecs/libffmpegFLAC/shndec.h new file mode 100644 index 0000000000..068f4faf28 --- /dev/null +++ b/lib/rbcodec/codecs/libffmpegFLAC/shndec.h @@ -0,0 +1,52 @@ +#include "bitstream.h" + +#define SHN_OUTPUT_DEPTH 29 /* 28 bits + sign */ + +#define MAX_CHANNELS 2 +#define MAX_PRED_ORDER 16 +#define MAX_NWRAP MAX_PRED_ORDER +#define MAX_NMEAN 4 + +/* NUM_DEC_LOOPS should be even number */ +#define NUM_DEC_LOOPS 26 +#define DEFAULT_BLOCK_SIZE 256 +#define MAX_HEADER_SIZE DEFAULT_BLOCK_SIZE*4 +#define MAX_BUFFER_SIZE 2*DEFAULT_BLOCK_SIZE*NUM_DEC_LOOPS +#define MAX_DECODE_SIZE ((DEFAULT_BLOCK_SIZE*NUM_DEC_LOOPS/2) + MAX_NWRAP) +#define MAX_OFFSET_SIZE MAX_NMEAN + +#define FN_DIFF0 0 +#define FN_DIFF1 1 +#define FN_DIFF2 2 +#define FN_DIFF3 3 +#define FN_QUIT 4 +#define FN_BLOCKSIZE 5 +#define FN_BITSHIFT 6 +#define FN_QLPC 7 +#define FN_ZERO 8 +#define FN_VERBATIM 9 +#define FN_ERROR 10 + +typedef struct ShortenContext { + GetBitContext gb; + int32_t lpcqoffset; + uint32_t totalsamples; + int header_bits; + int channels; + int sample_rate; + int bits_per_sample; + int version; + int bitshift; + int last_bitshift; + int nmean; + int nwrap; + int blocksize; + int bitindex; +} ShortenContext; + +int shorten_init(ShortenContext* s, uint8_t *buf, int buf_size); +int shorten_decode_frames(ShortenContext *s, int *nsamples, + int32_t *decoded0, int32_t *decoded1, + int32_t *offset0, int32_t *offset1, + uint8_t *buf, int buf_size, + void (*yield)(void)) ICODE_ATTR; |