diff options
Diffstat (limited to 'thirdparty/libtheora/decint.h')
| -rw-r--r-- | thirdparty/libtheora/decint.h | 152 |
1 files changed, 115 insertions, 37 deletions
diff --git a/thirdparty/libtheora/decint.h b/thirdparty/libtheora/decint.h index 261b67631a..3cea6b1439 100644 --- a/thirdparty/libtheora/decint.h +++ b/thirdparty/libtheora/decint.h @@ -11,7 +11,7 @@ ******************************************************************** function: - last mod: $Id: decint.h 16503 2009-08-22 18:14:02Z giles $ + last mod: $Id$ ********************************************************************/ @@ -19,15 +19,39 @@ #if !defined(_decint_H) # define _decint_H (1) # include "theora/theoradec.h" -# include "internal.h" +# include "state.h" # include "bitpack.h" - -typedef struct th_setup_info oc_setup_info; -typedef struct th_dec_ctx oc_dec_ctx; - # include "huffdec.h" # include "dequant.h" +typedef struct th_setup_info oc_setup_info; +typedef struct oc_dec_opt_vtable oc_dec_opt_vtable; +typedef struct oc_dec_pipeline_state oc_dec_pipeline_state; +typedef struct th_dec_ctx oc_dec_ctx; + + + +/*Decoder-specific accelerated functions.*/ +# if defined(OC_C64X_ASM) +# include "c64x/c64xdec.h" +# endif + +# if !defined(oc_dec_accel_init) +# define oc_dec_accel_init oc_dec_accel_init_c +# endif +# if defined(OC_DEC_USE_VTABLE) +# if !defined(oc_dec_dc_unpredict_mcu_plane) +# define oc_dec_dc_unpredict_mcu_plane(_dec,_pipe,_pli) \ + ((*(_dec)->opt_vtable.dc_unpredict_mcu_plane)(_dec,_pipe,_pli)) +# endif +# else +# if !defined(oc_dec_dc_unpredict_mcu_plane) +# define oc_dec_dc_unpredict_mcu_plane oc_dec_dc_unpredict_mcu_plane_c +# endif +# endif + + + /*Constants for the packet-in state machine specific to the decoder.*/ /*Next packet to read: Data packet.*/ @@ -37,71 +61,125 @@ typedef struct th_dec_ctx oc_dec_ctx; struct th_setup_info{ /*The Huffman codes.*/ - oc_huff_node *huff_tables[TH_NHUFFMAN_TABLES]; + ogg_int16_t *huff_tables[TH_NHUFFMAN_TABLES]; /*The quantization parameters.*/ th_quant_info qinfo; }; +/*Decoder specific functions with accelerated variants.*/ +struct oc_dec_opt_vtable{ + void (*dc_unpredict_mcu_plane)(oc_dec_ctx *_dec, + oc_dec_pipeline_state *_pipe,int _pli); +}; + + + +struct oc_dec_pipeline_state{ + /*Decoded DCT coefficients. + These are placed here instead of on the stack so that they can persist + between blocks, which makes clearing them back to zero much faster when + only a few non-zero coefficients were decoded. + It requires at least 65 elements because the zig-zag index array uses the + 65th element as a dumping ground for out-of-range indices to protect us + from buffer overflow. + We make it fully twice as large so that the second half can serve as the + reconstruction buffer, which saves passing another parameter to all the + acceleration functios. + It also solves problems with 16-byte alignment for NEON on ARM. + gcc (as of 4.2.1) only seems to be able to give stack variables 8-byte + alignment, and silently produces incorrect results if you ask for 16. + Finally, keeping it off the stack means there's less likely to be a data + hazard beween the NEON co-processor and the regular ARM core, which avoids + unnecessary stalls.*/ + OC_ALIGN16(ogg_int16_t dct_coeffs[128]); + OC_ALIGN16(signed char bounding_values[256]); + ptrdiff_t ti[3][64]; + ptrdiff_t ebi[3][64]; + ptrdiff_t eob_runs[3][64]; + const ptrdiff_t *coded_fragis[3]; + const ptrdiff_t *uncoded_fragis[3]; + ptrdiff_t ncoded_fragis[3]; + ptrdiff_t nuncoded_fragis[3]; + const ogg_uint16_t *dequant[3][3][2]; + int fragy0[3]; + int fragy_end[3]; + int pred_last[3][4]; + int mcu_nvfrags; + int loop_filter; + int pp_level; +}; + + struct th_dec_ctx{ /*Shared encoder/decoder state.*/ - oc_theora_state state; + oc_theora_state state; /*Whether or not packets are ready to be emitted. This takes on negative values while there are remaining header packets to be emitted, reaches 0 when the codec is ready for input, and goes to 1 when a frame has been processed and a data packet is ready.*/ - int packet_state; + int packet_state; /*Buffer in which to assemble packets.*/ - oc_pack_buf opb; + oc_pack_buf opb; /*Huffman decode trees.*/ - oc_huff_node *huff_tables[TH_NHUFFMAN_TABLES]; + ogg_int16_t *huff_tables[TH_NHUFFMAN_TABLES]; /*The index of the first token in each plane for each coefficient.*/ - ptrdiff_t ti0[3][64]; + ptrdiff_t ti0[3][64]; /*The number of outstanding EOB runs at the start of each coefficient in each plane.*/ - ptrdiff_t eob_runs[3][64]; + ptrdiff_t eob_runs[3][64]; /*The DCT token lists.*/ - unsigned char *dct_tokens; + unsigned char *dct_tokens; /*The extra bits associated with DCT tokens.*/ - unsigned char *extra_bits; + unsigned char *extra_bits; /*The number of dct tokens unpacked so far.*/ - int dct_tokens_count; + int dct_tokens_count; /*The out-of-loop post-processing level.*/ - int pp_level; + int pp_level; /*The DC scale used for out-of-loop deblocking.*/ - int pp_dc_scale[64]; + int pp_dc_scale[64]; /*The sharpen modifier used for out-of-loop deringing.*/ - int pp_sharp_mod[64]; + int pp_sharp_mod[64]; /*The DC quantization index of each block.*/ - unsigned char *dc_qis; + unsigned char *dc_qis; /*The variance of each block.*/ - int *variances; + int *variances; /*The storage for the post-processed frame buffer.*/ - unsigned char *pp_frame_data; + unsigned char *pp_frame_data; /*Whether or not the post-processsed frame buffer has space for chroma.*/ - int pp_frame_state; + int pp_frame_state; /*The buffer used for the post-processed frame. Note that this is _not_ guaranteed to have the same strides and offsets as the reference frame buffers.*/ - th_ycbcr_buffer pp_frame_buf; + th_ycbcr_buffer pp_frame_buf; /*The striped decode callback function.*/ - th_stripe_callback stripe_cb; + th_stripe_callback stripe_cb; + oc_dec_pipeline_state pipe; +# if defined(OC_DEC_USE_VTABLE) + /*Table for decoder acceleration functions.*/ + oc_dec_opt_vtable opt_vtable; +# endif # if defined(HAVE_CAIRO) /*Output metrics for debugging.*/ - int telemetry; - int telemetry_mbmode; - int telemetry_mv; - int telemetry_qi; - int telemetry_bits; - int telemetry_frame_bytes; - int telemetry_coding_bytes; - int telemetry_mode_bytes; - int telemetry_mv_bytes; - int telemetry_qi_bytes; - int telemetry_dc_bytes; - unsigned char *telemetry_frame_data; + int telemetry_mbmode; + int telemetry_mv; + int telemetry_qi; + int telemetry_bits; + int telemetry_frame_bytes; + int telemetry_coding_bytes; + int telemetry_mode_bytes; + int telemetry_mv_bytes; + int telemetry_qi_bytes; + int telemetry_dc_bytes; + unsigned char *telemetry_frame_data; # endif }; +/*Default pure-C implementations of decoder-specific accelerated functions.*/ +void oc_dec_accel_init_c(oc_dec_ctx *_dec); + +void oc_dec_dc_unpredict_mcu_plane_c(oc_dec_ctx *_dec, + oc_dec_pipeline_state *_pipe,int _pli); + #endif |