mirror of https://github.com/mpv-player/mpv
224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
/*
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* mpeg2_internal.h
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* Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* macroblock modes */
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#define MACROBLOCK_INTRA 1
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#define MACROBLOCK_PATTERN 2
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#define MACROBLOCK_MOTION_BACKWARD 4
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#define MACROBLOCK_MOTION_FORWARD 8
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#define MACROBLOCK_QUANT 16
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#define DCT_TYPE_INTERLACED 32
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/* motion_type */
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#define MOTION_TYPE_MASK (3*64)
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#define MOTION_TYPE_BASE 64
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#define MC_FIELD (1*64)
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#define MC_FRAME (2*64)
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#define MC_16X8 (2*64)
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#define MC_DMV (3*64)
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/* picture structure */
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#define TOP_FIELD 1
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#define BOTTOM_FIELD 2
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#define FRAME_PICTURE 3
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/* picture coding type */
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#define I_TYPE 1
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#define P_TYPE 2
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#define B_TYPE 3
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#define D_TYPE 4
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typedef struct motion_s {
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uint8_t * ref[2][3];
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int pmv[2][2];
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int f_code[2];
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} motion_t;
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typedef struct vo_frame_s {
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uint8_t * base[3]; /* pointer to 3 planes */
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void (* copy) (struct vo_frame_s * frame, uint8_t ** src);
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void* vo;
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// int slice;
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// void (* field) (struct vo_frame_s * frame, int flags);
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// void (* draw) (struct vo_frame_s * frame);
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// vo_instance_t * instance;
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} vo_frame_t;
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typedef struct picture_s {
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/* first, state that carries information from one macroblock to the */
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/* next inside a slice, and is never used outside of slice_process() */
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/* DCT coefficients - should be kept aligned ! */
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int16_t DCTblock[64];
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/* bit parsing stuff */
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uint32_t bitstream_buf; /* current 32 bit working set of buffer */
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int bitstream_bits; /* used bits in working set */
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uint8_t * bitstream_ptr; /* buffer with stream data */
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/* Motion vectors */
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/* The f_ and b_ correspond to the forward and backward motion */
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/* predictors */
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motion_t b_motion;
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motion_t f_motion;
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/* predictor for DC coefficients in intra blocks */
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int16_t dc_dct_pred[3];
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int quantizer_scale; /* remove */
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int current_field; /* remove */
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int v_offset; /* remove */
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/* now non-slice-specific information */
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/* sequence header stuff */
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uint8_t intra_quantizer_matrix [64];
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uint8_t non_intra_quantizer_matrix [64];
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/* The width and height of the picture snapped to macroblock units */
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int coded_picture_width;
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int coded_picture_height;
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/* picture header stuff */
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/* what type of picture this is (I, P, B, D) */
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int picture_coding_type;
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/* picture coding extension stuff */
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/* quantization factor for intra dc coefficients */
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int intra_dc_precision;
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/* top/bottom/both fields */
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int picture_structure;
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/* bool to indicate all predictions are frame based */
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int frame_pred_frame_dct;
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/* bool to indicate whether intra blocks have motion vectors */
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/* (for concealment) */
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int concealment_motion_vectors;
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/* bit to indicate which quantization table to use */
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int q_scale_type;
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/* bool to use different vlc tables */
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int intra_vlc_format;
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/* used for DMV MC */
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int top_field_first;
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/* stuff derived from bitstream */
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/* pointer to the zigzag scan we're supposed to be using */
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uint8_t * scan;
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struct vo_frame_s * current_frame;
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struct vo_frame_s * forward_reference_frame;
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struct vo_frame_s * backward_reference_frame;
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int second_field;
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int mpeg1;
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/* these things are not needed by the decoder */
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/* this is a temporary interface, we will build a better one later. */
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int aspect_ratio_information;
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int frame_rate_code;
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int progressive_sequence;
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int repeat_first_field;
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int progressive_frame;
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int bitrate;
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// added by A'rpi/ESP-team
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int display_picture_width;
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int display_picture_height;
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int pp_options;
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int display_time;
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struct vo_frame_s * display_frame;
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int slice;
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} picture_t;
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typedef struct mpeg2_config_s {
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/* Bit flags that enable various things */
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uint32_t flags;
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} mpeg2_config_t;
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/* The only global variable, */
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/* the config struct */
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extern mpeg2_config_t config;
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/* slice.c */
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void header_state_init (picture_t * picture);
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int header_process_picture_header (picture_t * picture, uint8_t * buffer);
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int header_process_sequence_header (picture_t * picture, uint8_t * buffer);
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int header_process_extension (picture_t * picture, uint8_t * buffer);
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/* idct.c */
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void idct_init (void);
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/* idct_mlib.c */
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void idct_block_copy_mlib (int16_t * block, uint8_t * dest, int stride);
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void idct_block_add_mlib (int16_t * block, uint8_t * dest, int stride);
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/* idct_mmx.c */
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void idct_block_copy_mmxext (int16_t *block, uint8_t * dest, int stride);
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void idct_block_add_mmxext (int16_t *block, uint8_t * dest, int stride);
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void idct_block_copy_mmx (int16_t *block, uint8_t * dest, int stride);
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void idct_block_add_mmx (int16_t *block, uint8_t * dest, int stride);
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void idct_mmx_init (void);
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/* motion_comp.c */
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void motion_comp_init (void);
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typedef struct mc_functions_s
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{
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void (* put [8]) (uint8_t *dst, uint8_t *, int32_t, int32_t);
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void (* avg [8]) (uint8_t *dst, uint8_t *, int32_t, int32_t);
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} mc_functions_t;
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#define MOTION_COMP_EXTERN(x) mc_functions_t mc_functions_##x = \
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{ \
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{MC_put_16_##x, MC_put_x16_##x, MC_put_y16_##x, MC_put_xy16_##x, \
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MC_put_8_##x, MC_put_x8_##x, MC_put_y8_##x, MC_put_xy8_##x}, \
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{MC_avg_16_##x, MC_avg_x16_##x, MC_avg_y16_##x, MC_avg_xy16_##x, \
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MC_avg_8_##x, MC_avg_x8_##x, MC_avg_y8_##x, MC_avg_xy8_##x} \
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};
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extern mc_functions_t mc_functions_c;
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extern mc_functions_t mc_functions_mmx;
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extern mc_functions_t mc_functions_mmxext;
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extern mc_functions_t mc_functions_3dnow;
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extern mc_functions_t mc_functions_mlib;
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/* slice.c */
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int slice_process (picture_t *picture, uint8_t code, uint8_t * buffer);
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/* stats.c */
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void stats_header (uint8_t code, uint8_t * buffer);
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void mpeg2_allocate_image_buffers(picture_t * picture);
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void mpeg2_free_image_buffers (picture_t * picture);
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#ifdef MPEG12_POSTPROC
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#define MPEG2_MBC 120
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#define MPEG2_MBR 72
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#endif
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