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#define | OJPH_REPEAT2(a) a,a |
| Macros that help with typing and space.
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#define | OJPH_REPEAT4(a) a,a,a,a |
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#define | OJPH_REPEAT8(a) a,a,a,a,a,a,a,a |
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#define | OJPH_REPEAT16(a) a,a,a,a,a,a,a,a,a,a,a,a,a,a,a,a |
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static void | ojph::local::mel_read (dec_mel_st *melp) |
| Reads and unstuffs the MEL bitstream.
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static void | ojph::local::mel_decode (dec_mel_st *melp) |
| Decodes unstuffed MEL segment bits stored in tmp to runs.
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static void | ojph::local::mel_init (dec_mel_st *melp, ui8 *bbuf, int lcup, int scup) |
| Initiates a dec_mel_st structure for MEL decoding and reads some bytes in order to get the read address to a multiple of 4.
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static int | ojph::local::mel_get_run (dec_mel_st *melp) |
| Retrieves one run from dec_mel_st; if there are no runs stored MEL segment is decoded.
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static void | ojph::local::rev_read (rev_struct *vlcp) |
| Read and unstuff data from a backwardly-growing segment.
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static void | ojph::local::rev_init (rev_struct *vlcp, ui8 *data, int lcup, int scup) |
| Initiates the rev_struct structure and reads a few bytes to move the read address to multiple of 4.
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static ui32 | ojph::local::rev_fetch (rev_struct *vlcp) |
| Retrieves 32 bits from the head of a rev_struct structure.
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static ui32 | ojph::local::rev_advance (rev_struct *vlcp, ui32 num_bits) |
| Consumes num_bits from a rev_struct structure.
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static void | ojph::local::rev_read_mrp (rev_struct *mrp) |
| Reads and unstuffs from rev_struct.
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static void | ojph::local::rev_init_mrp (rev_struct *mrp, ui8 *data, int lcup, int len2) |
| Initialized rev_struct structure for MRP segment, and reads a number of bytes such that the next 32 bits read are from an address that is a multiple of 4.
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static ui32 | ojph::local::rev_fetch_mrp (rev_struct *mrp) |
| Retrieves 32 bits from the head of a rev_struct structure.
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static ui32 | ojph::local::rev_advance_mrp (rev_struct *mrp, ui32 num_bits) |
| Consumes num_bits from a rev_struct structure.
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template<int X> |
static void | ojph::local::frwd_read (frwd_struct *msp) |
| Read and unstuffs 16 bytes from forward-growing bitstream.
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template<int X> |
static void | ojph::local::frwd_init (frwd_struct *msp, const ui8 *data, int size) |
| Initialize frwd_struct struct and reads some bytes.
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static void | ojph::local::frwd_advance (frwd_struct *msp, ui32 num_bits) |
| Consume num_bits bits from the bitstream of frwd_struct.
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template<int X> |
static v128_t | ojph::local::frwd_fetch (frwd_struct *msp) |
| Fetches 32 bits from the frwd_struct bitstream.
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template<int N> |
static v128_t | ojph::local::decode_one_quad32 (const v128_t inf_u_q, v128_t U_q, frwd_struct *magsgn, ui32 p, v128_t &vn) |
| decodes one quad, using 32 bit data
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static v128_t | ojph::local::decode_two_quad16 (const v128_t inf_u_q, v128_t U_q, frwd_struct *magsgn, ui32 p, v128_t &vn) |
| decodes twos consecutive quads (one octet), using 16 bit data
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bool | ojph::local::ojph_decode_codeblock_wasm (ui8 *coded_data, ui32 *decoded_data, ui32 missing_msbs, ui32 num_passes, ui32 lengths1, ui32 lengths2, ui32 width, ui32 height, ui32 stride, bool stripe_causal) |
| Decodes one codeblock, processing the cleanup, siginificance propagation, and magnitude refinement pass.
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implements a faster HTJ2K block decoder using wasm simd