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108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
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* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
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* *
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********************************************************************
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function:
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last mod: $Id: decint.h 16503 2009-08-22 18:14:02Z giles $
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********************************************************************/
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#include <limits.h>
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#if !defined(_decint_H)
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# define _decint_H (1)
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# include "theora/theoradec.h"
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# include "internal.h"
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# include "bitpack.h"
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typedef struct th_setup_info oc_setup_info;
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typedef struct th_dec_ctx oc_dec_ctx;
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# include "huffdec.h"
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# include "dequant.h"
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/*Constants for the packet-in state machine specific to the decoder.*/
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/*Next packet to read: Data packet.*/
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#define OC_PACKET_DATA (0)
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struct th_setup_info{
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/*The Huffman codes.*/
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oc_huff_node *huff_tables[TH_NHUFFMAN_TABLES];
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/*The quantization parameters.*/
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th_quant_info qinfo;
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};
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struct th_dec_ctx{
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/*Shared encoder/decoder state.*/
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oc_theora_state state;
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/*Whether or not packets are ready to be emitted.
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This takes on negative values while there are remaining header packets to
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be emitted, reaches 0 when the codec is ready for input, and goes to 1
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when a frame has been processed and a data packet is ready.*/
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int packet_state;
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/*Buffer in which to assemble packets.*/
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oc_pack_buf opb;
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/*Huffman decode trees.*/
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oc_huff_node *huff_tables[TH_NHUFFMAN_TABLES];
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/*The index of the first token in each plane for each coefficient.*/
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ptrdiff_t ti0[3][64];
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/*The number of outstanding EOB runs at the start of each coefficient in each
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plane.*/
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ptrdiff_t eob_runs[3][64];
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/*The DCT token lists.*/
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unsigned char *dct_tokens;
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/*The extra bits associated with DCT tokens.*/
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unsigned char *extra_bits;
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/*The number of dct tokens unpacked so far.*/
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int dct_tokens_count;
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/*The out-of-loop post-processing level.*/
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int pp_level;
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/*The DC scale used for out-of-loop deblocking.*/
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int pp_dc_scale[64];
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/*The sharpen modifier used for out-of-loop deringing.*/
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int pp_sharp_mod[64];
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/*The DC quantization index of each block.*/
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unsigned char *dc_qis;
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/*The variance of each block.*/
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int *variances;
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/*The storage for the post-processed frame buffer.*/
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unsigned char *pp_frame_data;
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/*Whether or not the post-processsed frame buffer has space for chroma.*/
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int pp_frame_state;
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/*The buffer used for the post-processed frame.
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Note that this is _not_ guaranteed to have the same strides and offsets as
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the reference frame buffers.*/
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th_ycbcr_buffer pp_frame_buf;
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/*The striped decode callback function.*/
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th_stripe_callback stripe_cb;
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# if defined(HAVE_CAIRO)
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/*Output metrics for debugging.*/
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int telemetry;
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int telemetry_mbmode;
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int telemetry_mv;
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int telemetry_qi;
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int telemetry_bits;
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int telemetry_frame_bytes;
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int telemetry_coding_bytes;
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int telemetry_mode_bytes;
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int telemetry_mv_bytes;
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int telemetry_qi_bytes;
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int telemetry_dc_bytes;
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unsigned char *telemetry_frame_data;
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# endif
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};
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#endif
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