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mpv/libmpeg2/mpeg2_internal.h
diego 480048ec6f Remove IWMMXT optimizations through libavcodec from libmpeg2. 
According to Siarhei Siamashka libavcodec is faster on ARM so it is better to
use it directly instead of creating this hackish mix of two libraries.
Plus, these local changes would never be acceptable upstream, so no good
reason for keeping it in our local patchset remains.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27677 b3059339-0415-0410-9bf9-f77b7e298cf2
2008-10-01 01:01:59 +00:00

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/*
* mpeg2_internal.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpeg2dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Modified for use with MPlayer, see libmpeg2_changes.diff for the exact changes.
* detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
* $Id$
*/
#ifndef LIBMPEG2_MPEG2_INTERNAL_H
#define LIBMPEG2_MPEG2_INTERNAL_H
#define STATE_INTERNAL_NORETURN ((mpeg2_state_t)-1)
/* macroblock modes */
#define MACROBLOCK_INTRA 1
#define MACROBLOCK_PATTERN 2
#define MACROBLOCK_MOTION_BACKWARD 4
#define MACROBLOCK_MOTION_FORWARD 8
#define MACROBLOCK_QUANT 16
#define DCT_TYPE_INTERLACED 32
/* motion_type */
#define MOTION_TYPE_SHIFT 6
#define MC_FIELD 1
#define MC_FRAME 2
#define MC_16X8 2
#define MC_DMV 3
/* picture structure */
#define TOP_FIELD 1
#define BOTTOM_FIELD 2
#define FRAME_PICTURE 3
/* picture coding type */
#define I_TYPE 1
#define P_TYPE 2
#define B_TYPE 3
#define D_TYPE 4
typedef void mpeg2_mc_fct (uint8_t *, const uint8_t *, int, int);
typedef struct {
uint8_t * ref[2][3];
uint8_t ** ref2[2];
int pmv[2][2];
int f_code[2];
} motion_t;
typedef void motion_parser_t (mpeg2_decoder_t * decoder,
motion_t * motion,
mpeg2_mc_fct * const * table);
struct mpeg2_decoder_s {
/* first, state that carries information from one macroblock to the */
/* next inside a slice, and is never used outside of mpeg2_slice() */
/* bit parsing stuff */
uint32_t bitstream_buf; /* current 32 bit working set */
int bitstream_bits; /* used bits in working set */
const uint8_t * bitstream_ptr; /* buffer with stream data */
uint8_t * dest[3];
int offset;
int stride;
int uv_stride;
int slice_stride;
int slice_uv_stride;
int stride_frame;
unsigned int limit_x;
unsigned int limit_y_16;
unsigned int limit_y_8;
unsigned int limit_y;
/* Motion vectors */
/* The f_ and b_ correspond to the forward and backward motion */
/* predictors */
motion_t b_motion;
motion_t f_motion;
motion_parser_t * motion_parser[5];
/* predictor for DC coefficients in intra blocks */
int16_t dc_dct_pred[3];
/* DCT coefficients */
int16_t DCTblock[64] ATTR_ALIGN(64);
uint8_t * picture_dest[3];
void (* convert) (void * convert_id, uint8_t * const * src,
unsigned int v_offset);
void * convert_id;
int dmv_offset;
unsigned int v_offset;
/* now non-slice-specific information */
/* sequence header stuff */
uint16_t * quantizer_matrix[4];
uint16_t (* chroma_quantizer[2])[64];
uint16_t quantizer_prescale[4][32][64];
/* The width and height of the picture snapped to macroblock units */
int width;
int height;
int vertical_position_extension;
int chroma_format;
/* picture header stuff */
/* what type of picture this is (I, P, B, D) */
int coding_type;
/* picture coding extension stuff */
/* quantization factor for intra dc coefficients */
int intra_dc_precision;
/* top/bottom/both fields */
int picture_structure;
/* bool to indicate all predictions are frame based */
int frame_pred_frame_dct;
/* bool to indicate whether intra blocks have motion vectors */
/* (for concealment) */
int concealment_motion_vectors;
/* bool to use different vlc tables */
int intra_vlc_format;
/* used for DMV MC */
int top_field_first;
/* stuff derived from bitstream */
/* pointer to the zigzag scan we're supposed to be using */
const uint8_t * scan;
int second_field;
int mpeg1;
/* XXX: stuff due to xine shit */
int8_t q_scale_type;
int quantizer_scales[32];
int quantizer_scale;
char* quant_store;
int quant_stride;
};
typedef struct {
mpeg2_fbuf_t fbuf;
} fbuf_alloc_t;
struct mpeg2dec_s {
mpeg2_decoder_t decoder;
mpeg2_info_t info;
uint32_t shift;
int is_display_initialized;
mpeg2_state_t (* action) (struct mpeg2dec_s * mpeg2dec);
mpeg2_state_t state;
uint32_t ext_state;
/* allocated in init - gcc has problems allocating such big structures */
uint8_t * chunk_buffer;
/* pointer to start of the current chunk */
uint8_t * chunk_start;
/* pointer to current position in chunk_buffer */
uint8_t * chunk_ptr;
/* last start code ? */
uint8_t code;
/* picture tags */
uint32_t tag_current, tag2_current, tag_previous, tag2_previous;
int num_tags;
int bytes_since_tag;
int first;
int alloc_index_user;
int alloc_index;
uint8_t first_decode_slice;
uint8_t nb_decode_slices;
unsigned int user_data_len;
mpeg2_sequence_t new_sequence;
mpeg2_sequence_t sequence;
mpeg2_gop_t new_gop;
mpeg2_gop_t gop;
mpeg2_picture_t new_picture;
mpeg2_picture_t pictures[4];
mpeg2_picture_t * picture;
/*const*/ mpeg2_fbuf_t * fbuf[3]; /* 0: current fbuf, 1-2: prediction fbufs */
fbuf_alloc_t fbuf_alloc[3];
int custom_fbuf;
uint8_t * yuv_buf[3][3];
int yuv_index;
mpeg2_convert_t * convert;
void * convert_arg;
unsigned int convert_id_size;
int convert_stride;
void (* convert_start) (void * id, const mpeg2_fbuf_t * fbuf,
const mpeg2_picture_t * picture,
const mpeg2_gop_t * gop);
uint8_t * buf_start;
uint8_t * buf_end;
int16_t display_offset_x, display_offset_y;
int copy_matrix;
int8_t scaled[4]; /* XXX: MOVED */
//int8_t q_scale_type, scaled[4];
uint8_t quantizer_matrix[4][64];
uint8_t new_quantizer_matrix[4][64];
unsigned char *pending_buffer;
int pending_length;
};
typedef struct {
#ifdef ARCH_PPC
uint8_t regv[12*16];
#endif
int dummy;
} cpu_state_t;
/* cpu_accel.c */
uint32_t mpeg2_detect_accel (uint32_t accel);
/* cpu_state.c */
void mpeg2_cpu_state_init (uint32_t accel);
/* decode.c */
mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec);
/* header.c */
void mpeg2_header_state_init (mpeg2dec_t * mpeg2dec);
void mpeg2_reset_info (mpeg2_info_t * info);
int mpeg2_header_sequence (mpeg2dec_t * mpeg2dec);
int mpeg2_header_gop (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_header_picture_start (mpeg2dec_t * mpeg2dec);
int mpeg2_header_picture (mpeg2dec_t * mpeg2dec);
int mpeg2_header_extension (mpeg2dec_t * mpeg2dec);
int mpeg2_header_user_data (mpeg2dec_t * mpeg2dec);
void mpeg2_header_sequence_finalize (mpeg2dec_t * mpeg2dec);
void mpeg2_header_gop_finalize (mpeg2dec_t * mpeg2dec);
void mpeg2_header_picture_finalize (mpeg2dec_t * mpeg2dec, uint32_t accels);
mpeg2_state_t mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_header_end (mpeg2dec_t * mpeg2dec);
void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type);
/* idct.c */
extern void mpeg2_idct_init (uint32_t accel);
extern uint8_t mpeg2_scan_norm[64];
extern uint8_t mpeg2_scan_alt[64];
/* idct_mmx.c */
void mpeg2_idct_copy_sse2 (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_sse2 (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_copy_mmxext (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mmxext (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_copy_mmx (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mmx (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_mmx_init (void);
/* idct_altivec.c */
void mpeg2_idct_copy_altivec (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_altivec (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_altivec_init (void);
/* idct_alpha.c */
void mpeg2_idct_copy_mvi (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_mvi (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_copy_alpha (int16_t * block, uint8_t * dest, int stride);
void mpeg2_idct_add_alpha (int last, int16_t * block,
uint8_t * dest, int stride);
void mpeg2_idct_alpha_init (void);
/* motion_comp.c */
void mpeg2_mc_init (uint32_t accel);
typedef struct {
mpeg2_mc_fct * put [8];
mpeg2_mc_fct * avg [8];
} mpeg2_mc_t;
#define MPEG2_MC_EXTERN(x) mpeg2_mc_t mpeg2_mc_##x = { \
{MC_put_o_16_##x, MC_put_x_16_##x, MC_put_y_16_##x, MC_put_xy_16_##x, \
MC_put_o_8_##x, MC_put_x_8_##x, MC_put_y_8_##x, MC_put_xy_8_##x}, \
{MC_avg_o_16_##x, MC_avg_x_16_##x, MC_avg_y_16_##x, MC_avg_xy_16_##x, \
MC_avg_o_8_##x, MC_avg_x_8_##x, MC_avg_y_8_##x, MC_avg_xy_8_##x} \
};
extern mpeg2_mc_t mpeg2_mc_c;
extern mpeg2_mc_t mpeg2_mc_mmx;
extern mpeg2_mc_t mpeg2_mc_mmxext;
extern mpeg2_mc_t mpeg2_mc_3dnow;
extern mpeg2_mc_t mpeg2_mc_altivec;
extern mpeg2_mc_t mpeg2_mc_alpha;
extern mpeg2_mc_t mpeg2_mc_vis;
extern mpeg2_mc_t mpeg2_mc_arm;
#endif /* LIBMPEG2_MPEG2_INTERNAL_H */
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